?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'chrome-platform-for-linus-4.13' of git://git.kernel.org/pub/scm/linux...
[linux/fpc-iii.git] / drivers / net / ethernet / ti / tlan.c
blobc8d53d8c83eeb0fbe4111be7840ac3463da704c5
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(unsigned long);
176
177 static void tlan_reset_lists(struct net_device *);
178 static void tlan_free_lists(struct net_device *);
179 static void tlan_print_dio(u16);
180 static void tlan_print_list(struct tlan_list *, char *, int);
181 static void tlan_read_and_clear_stats(struct net_device *, int);
182 static void tlan_reset_adapter(struct net_device *);
183 static void tlan_finish_reset(struct net_device *);
184 static void tlan_set_mac(struct net_device *, int areg, char *mac);
185
186 static void tlan_phy_print(struct net_device *);
187 static void tlan_phy_detect(struct net_device *);
188 static void tlan_phy_power_down(struct net_device *);
189 static void tlan_phy_power_up(struct net_device *);
190 static void tlan_phy_reset(struct net_device *);
191 static void tlan_phy_start_link(struct net_device *);
192 static void tlan_phy_finish_auto_neg(struct net_device *);
193 static void tlan_phy_monitor(unsigned long);
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.data = (unsigned long) dev;
262 priv->timer_set_at = jiffies;
263 priv->timer_type = type;
264 mod_timer(&priv->timer, jiffies + ticks);
265
266 }
267
268
269 /*****************************************************************************
270 ******************************************************************************
271
272 ThunderLAN driver primary functions
273
274 these functions are more or less common to all linux network drivers.
275
276 ******************************************************************************
277 *****************************************************************************/
278
279
280
281
282
283 /***************************************************************
284 * tlan_remove_one
285 *
286 * Returns:
287 * Nothing
288 * Parms:
289 * None
290 *
291 * Goes through the TLanDevices list and frees the device
292 * structs and memory associated with each device (lists
293 * and buffers). It also ureserves the IO port regions
294 * associated with this device.
295 *
296 **************************************************************/
297
298
299 static void tlan_remove_one(struct pci_dev *pdev)
300 {
301 struct net_device *dev = pci_get_drvdata(pdev);
302 struct tlan_priv *priv = netdev_priv(dev);
303
304 unregister_netdev(dev);
305
306 if (priv->dma_storage) {
307 pci_free_consistent(priv->pci_dev,
308 priv->dma_size, priv->dma_storage,
309 priv->dma_storage_dma);
310 }
311
312 #ifdef CONFIG_PCI
313 pci_release_regions(pdev);
314 #endif
315
316 free_netdev(dev);
317
318 cancel_work_sync(&priv->tlan_tqueue);
319 }
320
321 static void tlan_start(struct net_device *dev)
322 {
323 tlan_reset_lists(dev);
324 /* NOTE: It might not be necessary to read the stats before a
325 reset if you don't care what the values are.
326 */
327 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
328 tlan_reset_adapter(dev);
329 netif_wake_queue(dev);
330 }
331
332 static void tlan_stop(struct net_device *dev)
333 {
334 struct tlan_priv *priv = netdev_priv(dev);
335
336 del_timer_sync(&priv->media_timer);
337 tlan_read_and_clear_stats(dev, TLAN_RECORD);
338 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
339 /* Reset and power down phy */
340 tlan_reset_adapter(dev);
341 if (priv->timer.function != NULL) {
342 del_timer_sync(&priv->timer);
343 priv->timer.function = NULL;
344 }
345 }
346
347 #ifdef CONFIG_PM
348
349 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
350 {
351 struct net_device *dev = pci_get_drvdata(pdev);
352
353 if (netif_running(dev))
354 tlan_stop(dev);
355
356 netif_device_detach(dev);
357 pci_save_state(pdev);
358 pci_disable_device(pdev);
359 pci_wake_from_d3(pdev, false);
360 pci_set_power_state(pdev, PCI_D3hot);
361
362 return 0;
363 }
364
365 static int tlan_resume(struct pci_dev *pdev)
366 {
367 struct net_device *dev = pci_get_drvdata(pdev);
368 int rc = pci_enable_device(pdev);
369
370 if (rc)
371 return rc;
372 pci_restore_state(pdev);
373 pci_enable_wake(pdev, PCI_D0, 0);
374 netif_device_attach(dev);
375
376 if (netif_running(dev))
377 tlan_start(dev);
378
379 return 0;
380 }
381
382 #else /* CONFIG_PM */
383
384 #define tlan_suspend NULL
385 #define tlan_resume NULL
386
387 #endif /* CONFIG_PM */
388
389
390 static struct pci_driver tlan_driver = {
391 .name = "tlan",
392 .id_table = tlan_pci_tbl,
393 .probe = tlan_init_one,
394 .remove = tlan_remove_one,
395 .suspend = tlan_suspend,
396 .resume = tlan_resume,
397 };
398
399 static int __init tlan_probe(void)
400 {
401 int rc = -ENODEV;
402
403 pr_info("%s", tlan_banner);
404
405 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
406
407 /* Use new style PCI probing. Now the kernel will
408 do most of this for us */
409 rc = pci_register_driver(&tlan_driver);
410
411 if (rc != 0) {
412 pr_err("Could not register pci driver\n");
413 goto err_out_pci_free;
414 }
415
416 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
417 tlan_eisa_probe();
418
419 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
420 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
421 tlan_have_pci, tlan_have_eisa);
422
423 if (tlan_devices_installed == 0) {
424 rc = -ENODEV;
425 goto err_out_pci_unreg;
426 }
427 return 0;
428
429 err_out_pci_unreg:
430 pci_unregister_driver(&tlan_driver);
431 err_out_pci_free:
432 return rc;
433 }
434
435
436 static int tlan_init_one(struct pci_dev *pdev,
437 const struct pci_device_id *ent)
438 {
439 return tlan_probe1(pdev, -1, -1, 0, ent);
440 }
441
442
443 /*
444 ***************************************************************
445 * tlan_probe1
446 *
447 * Returns:
448 * 0 on success, error code on error
449 * Parms:
450 * none
451 *
452 * The name is lower case to fit in with all the rest of
453 * the netcard_probe names. This function looks for
454 * another TLan based adapter, setting it up with the
455 * allocated device struct if one is found.
456 * tlan_probe has been ported to the new net API and
457 * now allocates its own device structure. This function
458 * is also used by modules.
459 *
460 **************************************************************/
461
462 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
463 const struct pci_device_id *ent)
464 {
465
466 struct net_device *dev;
467 struct tlan_priv *priv;
468 u16 device_id;
469 int reg, rc = -ENODEV;
470
471 #ifdef CONFIG_PCI
472 if (pdev) {
473 rc = pci_enable_device(pdev);
474 if (rc)
475 return rc;
476
477 rc = pci_request_regions(pdev, tlan_signature);
478 if (rc) {
479 pr_err("Could not reserve IO regions\n");
480 goto err_out;
481 }
482 }
483 #endif /* CONFIG_PCI */
484
485 dev = alloc_etherdev(sizeof(struct tlan_priv));
486 if (dev == NULL) {
487 rc = -ENOMEM;
488 goto err_out_regions;
489 }
490 SET_NETDEV_DEV(dev, &pdev->dev);
491
492 priv = netdev_priv(dev);
493
494 priv->pci_dev = pdev;
495 priv->dev = dev;
496
497 /* Is this a PCI device? */
498 if (pdev) {
499 u32 pci_io_base = 0;
500
501 priv->adapter = &board_info[ent->driver_data];
502
503 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
504 if (rc) {
505 pr_err("No suitable PCI mapping available\n");
506 goto err_out_free_dev;
507 }
508
509 for (reg = 0; reg <= 5; reg++) {
510 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
511 pci_io_base = pci_resource_start(pdev, reg);
512 TLAN_DBG(TLAN_DEBUG_GNRL,
513 "IO mapping is available at %x.\n",
514 pci_io_base);
515 break;
516 }
517 }
518 if (!pci_io_base) {
519 pr_err("No IO mappings available\n");
520 rc = -EIO;
521 goto err_out_free_dev;
522 }
523
524 dev->base_addr = pci_io_base;
525 dev->irq = pdev->irq;
526 priv->adapter_rev = pdev->revision;
527 pci_set_master(pdev);
528 pci_set_drvdata(pdev, dev);
529
530 } else { /* EISA card */
531 /* This is a hack. We need to know which board structure
532 * is suited for this adapter */
533 device_id = inw(ioaddr + EISA_ID2);
534 if (device_id == 0x20F1) {
535 priv->adapter = &board_info[13]; /* NetFlex-3/E */
536 priv->adapter_rev = 23; /* TLAN 2.3 */
537 } else {
538 priv->adapter = &board_info[14];
539 priv->adapter_rev = 10; /* TLAN 1.0 */
540 }
541 dev->base_addr = ioaddr;
542 dev->irq = irq;
543 }
544
545 /* Kernel parameters */
546 if (dev->mem_start) {
547 priv->aui = dev->mem_start & 0x01;
548 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
549 : (dev->mem_start & 0x06) >> 1;
550 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
551 : (dev->mem_start & 0x18) >> 3;
552
553 if (priv->speed == 0x1)
554 priv->speed = TLAN_SPEED_10;
555 else if (priv->speed == 0x2)
556 priv->speed = TLAN_SPEED_100;
557
558 debug = priv->debug = dev->mem_end;
559 } else {
560 priv->aui = aui[boards_found];
561 priv->speed = speed[boards_found];
562 priv->duplex = duplex[boards_found];
563 priv->debug = debug;
564 }
565
566 /* This will be used when we get an adapter error from
567 * within our irq handler */
568 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
569
570 spin_lock_init(&priv->lock);
571
572 rc = tlan_init(dev);
573 if (rc) {
574 pr_err("Could not set up device\n");
575 goto err_out_free_dev;
576 }
577
578 rc = register_netdev(dev);
579 if (rc) {
580 pr_err("Could not register device\n");
581 goto err_out_uninit;
582 }
583
584
585 tlan_devices_installed++;
586 boards_found++;
587
588 /* pdev is NULL if this is an EISA device */
589 if (pdev)
590 tlan_have_pci++;
591 else {
592 priv->next_device = tlan_eisa_devices;
593 tlan_eisa_devices = dev;
594 tlan_have_eisa++;
595 }
596
597 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
598 (int)dev->irq,
599 (int)dev->base_addr,
600 priv->adapter->device_label,
601 priv->adapter_rev);
602 return 0;
603
604 err_out_uninit:
605 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
606 priv->dma_storage_dma);
607 err_out_free_dev:
608 free_netdev(dev);
609 err_out_regions:
610 #ifdef CONFIG_PCI
611 if (pdev)
612 pci_release_regions(pdev);
613 err_out:
614 #endif
615 if (pdev)
616 pci_disable_device(pdev);
617 return rc;
618 }
619
620
621 static void tlan_eisa_cleanup(void)
622 {
623 struct net_device *dev;
624 struct tlan_priv *priv;
625
626 while (tlan_have_eisa) {
627 dev = tlan_eisa_devices;
628 priv = netdev_priv(dev);
629 if (priv->dma_storage) {
630 pci_free_consistent(priv->pci_dev, priv->dma_size,
631 priv->dma_storage,
632 priv->dma_storage_dma);
633 }
634 release_region(dev->base_addr, 0x10);
635 unregister_netdev(dev);
636 tlan_eisa_devices = priv->next_device;
637 free_netdev(dev);
638 tlan_have_eisa--;
639 }
640 }
641
642
643 static void __exit tlan_exit(void)
644 {
645 pci_unregister_driver(&tlan_driver);
646
647 if (tlan_have_eisa)
648 tlan_eisa_cleanup();
649
650 }
651
652
653 /* Module loading/unloading */
654 module_init(tlan_probe);
655 module_exit(tlan_exit);
656
657
658
659 /**************************************************************
660 * tlan_eisa_probe
661 *
662 * Returns: 0 on success, 1 otherwise
663 *
664 * Parms: None
665 *
666 *
667 * This functions probes for EISA devices and calls
668 * TLan_probe1 when one is found.
669 *
670 *************************************************************/
671
672 static void __init tlan_eisa_probe(void)
673 {
674 long ioaddr;
675 int rc = -ENODEV;
676 int irq;
677 u16 device_id;
678
679 if (!EISA_bus) {
680 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
681 return;
682 }
683
684 /* Loop through all slots of the EISA bus */
685 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
686
687 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
688 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
689 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
690 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
691
692
693 TLAN_DBG(TLAN_DEBUG_PROBE,
694 "Probing for EISA adapter at IO: 0x%4x : ",
695 (int) ioaddr);
696 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
697 goto out;
698
699 if (inw(ioaddr + EISA_ID) != 0x110E) {
700 release_region(ioaddr, 0x10);
701 goto out;
702 }
703
704 device_id = inw(ioaddr + EISA_ID2);
705 if (device_id != 0x20F1 && device_id != 0x40F1) {
706 release_region(ioaddr, 0x10);
707 goto out;
708 }
709
710 /* check if adapter is enabled */
711 if (inb(ioaddr + EISA_CR) != 0x1) {
712 release_region(ioaddr, 0x10);
713 goto out2;
714 }
715
716 if (debug == 0x10)
717 pr_info("Found one\n");
718
719
720 /* Get irq from board */
721 switch (inb(ioaddr + 0xcc0)) {
722 case(0x10):
723 irq = 5;
724 break;
725 case(0x20):
726 irq = 9;
727 break;
728 case(0x40):
729 irq = 10;
730 break;
731 case(0x80):
732 irq = 11;
733 break;
734 default:
735 goto out;
736 }
737
738
739 /* Setup the newly found eisa adapter */
740 rc = tlan_probe1(NULL, ioaddr, irq,
741 12, NULL);
742 continue;
743
744 out:
745 if (debug == 0x10)
746 pr_info("None found\n");
747 continue;
748
749 out2:
750 if (debug == 0x10)
751 pr_info("Card found but it is not enabled, skipping\n");
752 continue;
753
754 }
755
756 }
757
758 #ifdef CONFIG_NET_POLL_CONTROLLER
759 static void tlan_poll(struct net_device *dev)
760 {
761 disable_irq(dev->irq);
762 tlan_handle_interrupt(dev->irq, dev);
763 enable_irq(dev->irq);
764 }
765 #endif
766
767 static const struct net_device_ops tlan_netdev_ops = {
768 .ndo_open = tlan_open,
769 .ndo_stop = tlan_close,
770 .ndo_start_xmit = tlan_start_tx,
771 .ndo_tx_timeout = tlan_tx_timeout,
772 .ndo_get_stats = tlan_get_stats,
773 .ndo_set_rx_mode = tlan_set_multicast_list,
774 .ndo_do_ioctl = tlan_ioctl,
775 .ndo_set_mac_address = eth_mac_addr,
776 .ndo_validate_addr = eth_validate_addr,
777 #ifdef CONFIG_NET_POLL_CONTROLLER
778 .ndo_poll_controller = tlan_poll,
779 #endif
780 };
781
782 static void tlan_get_drvinfo(struct net_device *dev,
783 struct ethtool_drvinfo *info)
784 {
785 struct tlan_priv *priv = netdev_priv(dev);
786
787 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
788 if (priv->pci_dev)
789 strlcpy(info->bus_info, pci_name(priv->pci_dev),
790 sizeof(info->bus_info));
791 else
792 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
793 }
794
795 static int tlan_get_eeprom_len(struct net_device *dev)
796 {
797 return TLAN_EEPROM_SIZE;
798 }
799
800 static int tlan_get_eeprom(struct net_device *dev,
801 struct ethtool_eeprom *eeprom, u8 *data)
802 {
803 int i;
804
805 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
806 if (tlan_ee_read_byte(dev, i, &data[i]))
807 return -EIO;
808
809 return 0;
810 }
811
812 static const struct ethtool_ops tlan_ethtool_ops = {
813 .get_drvinfo = tlan_get_drvinfo,
814 .get_link = ethtool_op_get_link,
815 .get_eeprom_len = tlan_get_eeprom_len,
816 .get_eeprom = tlan_get_eeprom,
817 };
818
819 /***************************************************************
820 * tlan_init
821 *
822 * Returns:
823 * 0 on success, error code otherwise.
824 * Parms:
825 * dev The structure of the device to be
826 * init'ed.
827 *
828 * This function completes the initialization of the
829 * device structure and driver. It reserves the IO
830 * addresses, allocates memory for the lists and bounce
831 * buffers, retrieves the MAC address from the eeprom
832 * and assignes the device's methods.
833 *
834 **************************************************************/
835
836 static int tlan_init(struct net_device *dev)
837 {
838 int dma_size;
839 int err;
840 int i;
841 struct tlan_priv *priv;
842
843 priv = netdev_priv(dev);
844
845 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
846 * (sizeof(struct tlan_list));
847 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
848 dma_size,
849 &priv->dma_storage_dma);
850 priv->dma_size = dma_size;
851
852 if (priv->dma_storage == NULL) {
853 pr_err("Could not allocate lists and buffers for %s\n",
854 dev->name);
855 return -ENOMEM;
856 }
857 memset(priv->dma_storage, 0, dma_size);
858 priv->rx_list = (struct tlan_list *)
859 ALIGN((unsigned long)priv->dma_storage, 8);
860 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
861 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
862 priv->tx_list_dma =
863 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
864
865 err = 0;
866 for (i = 0; i < ETH_ALEN; i++)
867 err |= tlan_ee_read_byte(dev,
868 (u8) priv->adapter->addr_ofs + i,
869 (u8 *) &dev->dev_addr[i]);
870 if (err) {
871 pr_err("%s: Error reading MAC from eeprom: %d\n",
872 dev->name, err);
873 }
874 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
875 if (priv->adapter->addr_ofs == 0xf8) {
876 for (i = 0; i < ETH_ALEN; i += 2) {
877 char tmp = dev->dev_addr[i];
878 dev->dev_addr[i] = dev->dev_addr[i + 1];
879 dev->dev_addr[i + 1] = tmp;
880 }
881 }
882
883 netif_carrier_off(dev);
884
885 /* Device methods */
886 dev->netdev_ops = &tlan_netdev_ops;
887 dev->ethtool_ops = &tlan_ethtool_ops;
888 dev->watchdog_timeo = TX_TIMEOUT;
889
890 return 0;
891
892 }
893
894
895
896
897 /***************************************************************
898 * tlan_open
899 *
900 * Returns:
901 * 0 on success, error code otherwise.
902 * Parms:
903 * dev Structure of device to be opened.
904 *
905 * This routine puts the driver and TLAN adapter in a
906 * state where it is ready to send and receive packets.
907 * It allocates the IRQ, resets and brings the adapter
908 * out of reset, and allows interrupts. It also delays
909 * the startup for autonegotiation or sends a Rx GO
910 * command to the adapter, as appropriate.
911 *
912 **************************************************************/
913
914 static int tlan_open(struct net_device *dev)
915 {
916 struct tlan_priv *priv = netdev_priv(dev);
917 int err;
918
919 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
920 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
921 dev->name, dev);
922
923 if (err) {
924 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
925 dev->irq);
926 return err;
927 }
928
929 init_timer(&priv->timer);
930 init_timer(&priv->media_timer);
931
932 tlan_start(dev);
933
934 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
935 dev->name, priv->tlan_rev);
936
937 return 0;
938
939 }
940
941
942
943 /**************************************************************
944 * tlan_ioctl
945 *
946 * Returns:
947 * 0 on success, error code otherwise
948 * Params:
949 * dev structure of device to receive ioctl.
950 *
951 * rq ifreq structure to hold userspace data.
952 *
953 * cmd ioctl command.
954 *
955 *
956 *************************************************************/
957
958 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
959 {
960 struct tlan_priv *priv = netdev_priv(dev);
961 struct mii_ioctl_data *data = if_mii(rq);
962 u32 phy = priv->phy[priv->phy_num];
963
964 if (!priv->phy_online)
965 return -EAGAIN;
966
967 switch (cmd) {
968 case SIOCGMIIPHY: /* get address of MII PHY in use. */
969 data->phy_id = phy;
970
971
972 case SIOCGMIIREG: /* read MII PHY register. */
973 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
974 data->reg_num & 0x1f, &data->val_out);
975 return 0;
976
977
978 case SIOCSMIIREG: /* write MII PHY register. */
979 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
980 data->reg_num & 0x1f, data->val_in);
981 return 0;
982 default:
983 return -EOPNOTSUPP;
984 }
985 }
986
987
988 /***************************************************************
989 * tlan_tx_timeout
990 *
991 * Returns: nothing
992 *
993 * Params:
994 * dev structure of device which timed out
995 * during transmit.
996 *
997 **************************************************************/
998
999 static void tlan_tx_timeout(struct net_device *dev)
1000 {
1001
1002 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1003
1004 /* Ok so we timed out, lets see what we can do about it...*/
1005 tlan_free_lists(dev);
1006 tlan_reset_lists(dev);
1007 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1008 tlan_reset_adapter(dev);
1009 netif_trans_update(dev); /* prevent tx timeout */
1010 netif_wake_queue(dev);
1011
1012 }
1013
1014
1015 /***************************************************************
1016 * tlan_tx_timeout_work
1017 *
1018 * Returns: nothing
1019 *
1020 * Params:
1021 * work work item of device which timed out
1022 *
1023 **************************************************************/
1024
1025 static void tlan_tx_timeout_work(struct work_struct *work)
1026 {
1027 struct tlan_priv *priv =
1028 container_of(work, struct tlan_priv, tlan_tqueue);
1029
1030 tlan_tx_timeout(priv->dev);
1031 }
1032
1033
1034
1035 /***************************************************************
1036 * tlan_start_tx
1037 *
1038 * Returns:
1039 * 0 on success, non-zero on failure.
1040 * Parms:
1041 * skb A pointer to the sk_buff containing the
1042 * frame to be sent.
1043 * dev The device to send the data on.
1044 *
1045 * This function adds a frame to the Tx list to be sent
1046 * ASAP. First it verifies that the adapter is ready and
1047 * there is room in the queue. Then it sets up the next
1048 * available list, copies the frame to the corresponding
1049 * buffer. If the adapter Tx channel is idle, it gives
1050 * the adapter a Tx Go command on the list, otherwise it
1051 * sets the forward address of the previous list to point
1052 * to this one. Then it frees the sk_buff.
1053 *
1054 **************************************************************/
1055
1056 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1057 {
1058 struct tlan_priv *priv = netdev_priv(dev);
1059 dma_addr_t tail_list_phys;
1060 struct tlan_list *tail_list;
1061 unsigned long flags;
1062 unsigned int txlen;
1063
1064 if (!priv->phy_online) {
1065 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1066 dev->name);
1067 dev_kfree_skb_any(skb);
1068 return NETDEV_TX_OK;
1069 }
1070
1071 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1072 return NETDEV_TX_OK;
1073 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1074
1075 tail_list = priv->tx_list + priv->tx_tail;
1076 tail_list_phys =
1077 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1078
1079 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1080 TLAN_DBG(TLAN_DEBUG_TX,
1081 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1082 dev->name, priv->tx_head, priv->tx_tail);
1083 netif_stop_queue(dev);
1084 priv->tx_busy_count++;
1085 return NETDEV_TX_BUSY;
1086 }
1087
1088 tail_list->forward = 0;
1089
1090 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1091 skb->data, txlen,
1092 PCI_DMA_TODEVICE);
1093 tlan_store_skb(tail_list, skb);
1094
1095 tail_list->frame_size = (u16) txlen;
1096 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1097 tail_list->buffer[1].count = 0;
1098 tail_list->buffer[1].address = 0;
1099
1100 spin_lock_irqsave(&priv->lock, flags);
1101 tail_list->c_stat = TLAN_CSTAT_READY;
1102 if (!priv->tx_in_progress) {
1103 priv->tx_in_progress = 1;
1104 TLAN_DBG(TLAN_DEBUG_TX,
1105 "TRANSMIT: Starting TX on buffer %d\n",
1106 priv->tx_tail);
1107 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1108 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1109 } else {
1110 TLAN_DBG(TLAN_DEBUG_TX,
1111 "TRANSMIT: Adding buffer %d to TX channel\n",
1112 priv->tx_tail);
1113 if (priv->tx_tail == 0) {
1114 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1115 = tail_list_phys;
1116 } else {
1117 (priv->tx_list + (priv->tx_tail - 1))->forward
1118 = tail_list_phys;
1119 }
1120 }
1121 spin_unlock_irqrestore(&priv->lock, flags);
1122
1123 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1124
1125 return NETDEV_TX_OK;
1126
1127 }
1128
1129
1130
1131
1132 /***************************************************************
1133 * tlan_handle_interrupt
1134 *
1135 * Returns:
1136 * Nothing
1137 * Parms:
1138 * irq The line on which the interrupt
1139 * occurred.
1140 * dev_id A pointer to the device assigned to
1141 * this irq line.
1142 *
1143 * This function handles an interrupt generated by its
1144 * assigned TLAN adapter. The function deactivates
1145 * interrupts on its adapter, records the type of
1146 * interrupt, executes the appropriate subhandler, and
1147 * acknowdges the interrupt to the adapter (thus
1148 * re-enabling adapter interrupts.
1149 *
1150 **************************************************************/
1151
1152 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1153 {
1154 struct net_device *dev = dev_id;
1155 struct tlan_priv *priv = netdev_priv(dev);
1156 u16 host_int;
1157 u16 type;
1158
1159 spin_lock(&priv->lock);
1160
1161 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1162 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1163 if (type) {
1164 u32 ack;
1165 u32 host_cmd;
1166
1167 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1168 ack = tlan_int_vector[type](dev, host_int);
1169
1170 if (ack) {
1171 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1172 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1173 }
1174 }
1175
1176 spin_unlock(&priv->lock);
1177
1178 return IRQ_RETVAL(type);
1179 }
1180
1181
1182
1183
1184 /***************************************************************
1185 * tlan_close
1186 *
1187 * Returns:
1188 * An error code.
1189 * Parms:
1190 * dev The device structure of the device to
1191 * close.
1192 *
1193 * This function shuts down the adapter. It records any
1194 * stats, puts the adapter into reset state, deactivates
1195 * its time as needed, and frees the irq it is using.
1196 *
1197 **************************************************************/
1198
1199 static int tlan_close(struct net_device *dev)
1200 {
1201 tlan_stop(dev);
1202
1203 free_irq(dev->irq, dev);
1204 tlan_free_lists(dev);
1205 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1206
1207 return 0;
1208
1209 }
1210
1211
1212
1213
1214 /***************************************************************
1215 * tlan_get_stats
1216 *
1217 * Returns:
1218 * A pointer to the device's statistics structure.
1219 * Parms:
1220 * dev The device structure to return the
1221 * stats for.
1222 *
1223 * This function updates the devices statistics by reading
1224 * the TLAN chip's onboard registers. Then it returns the
1225 * address of the statistics structure.
1226 *
1227 **************************************************************/
1228
1229 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1230 {
1231 struct tlan_priv *priv = netdev_priv(dev);
1232 int i;
1233
1234 /* Should only read stats if open ? */
1235 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1236
1237 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1238 priv->rx_eoc_count);
1239 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1240 priv->tx_busy_count);
1241 if (debug & TLAN_DEBUG_GNRL) {
1242 tlan_print_dio(dev->base_addr);
1243 tlan_phy_print(dev);
1244 }
1245 if (debug & TLAN_DEBUG_LIST) {
1246 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1247 tlan_print_list(priv->rx_list + i, "RX", i);
1248 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1249 tlan_print_list(priv->tx_list + i, "TX", i);
1250 }
1251
1252 return &dev->stats;
1253
1254 }
1255
1256
1257
1258
1259 /***************************************************************
1260 * tlan_set_multicast_list
1261 *
1262 * Returns:
1263 * Nothing
1264 * Parms:
1265 * dev The device structure to set the
1266 * multicast list for.
1267 *
1268 * This function sets the TLAN adaptor to various receive
1269 * modes. If the IFF_PROMISC flag is set, promiscuous
1270 * mode is acitviated. Otherwise, promiscuous mode is
1271 * turned off. If the IFF_ALLMULTI flag is set, then
1272 * the hash table is set to receive all group addresses.
1273 * Otherwise, the first three multicast addresses are
1274 * stored in AREG_1-3, and the rest are selected via the
1275 * hash table, as necessary.
1276 *
1277 **************************************************************/
1278
1279 static void tlan_set_multicast_list(struct net_device *dev)
1280 {
1281 struct netdev_hw_addr *ha;
1282 u32 hash1 = 0;
1283 u32 hash2 = 0;
1284 int i;
1285 u32 offset;
1286 u8 tmp;
1287
1288 if (dev->flags & IFF_PROMISC) {
1289 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1290 tlan_dio_write8(dev->base_addr,
1291 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1292 } else {
1293 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1294 tlan_dio_write8(dev->base_addr,
1295 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1296 if (dev->flags & IFF_ALLMULTI) {
1297 for (i = 0; i < 3; i++)
1298 tlan_set_mac(dev, i + 1, NULL);
1299 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1300 0xffffffff);
1301 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1302 0xffffffff);
1303 } else {
1304 i = 0;
1305 netdev_for_each_mc_addr(ha, dev) {
1306 if (i < 3) {
1307 tlan_set_mac(dev, i + 1,
1308 (char *) &ha->addr);
1309 } else {
1310 offset =
1311 tlan_hash_func((u8 *)&ha->addr);
1312 if (offset < 32)
1313 hash1 |= (1 << offset);
1314 else
1315 hash2 |= (1 << (offset - 32));
1316 }
1317 i++;
1318 }
1319 for ( ; i < 3; i++)
1320 tlan_set_mac(dev, i + 1, NULL);
1321 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1322 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1323 }
1324 }
1325
1326 }
1327
1328
1329
1330 /*****************************************************************************
1331 ******************************************************************************
1332
1333 ThunderLAN driver interrupt vectors and table
1334
1335 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1336 Programmer's Guide" for more informations on handling interrupts
1337 generated by TLAN based adapters.
1338
1339 ******************************************************************************
1340 *****************************************************************************/
1341
1342
1343
1344
1345 /***************************************************************
1346 * tlan_handle_tx_eof
1347 *
1348 * Returns:
1349 * 1
1350 * Parms:
1351 * dev Device assigned the IRQ that was
1352 * raised.
1353 * host_int The contents of the HOST_INT
1354 * port.
1355 *
1356 * This function handles Tx EOF interrupts which are raised
1357 * by the adapter when it has completed sending the
1358 * contents of a buffer. If detemines which list/buffer
1359 * was completed and resets it. If the buffer was the last
1360 * in the channel (EOC), then the function checks to see if
1361 * another buffer is ready to send, and if so, sends a Tx
1362 * Go command. Finally, the driver activates/continues the
1363 * activity LED.
1364 *
1365 **************************************************************/
1366
1367 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1368 {
1369 struct tlan_priv *priv = netdev_priv(dev);
1370 int eoc = 0;
1371 struct tlan_list *head_list;
1372 dma_addr_t head_list_phys;
1373 u32 ack = 0;
1374 u16 tmp_c_stat;
1375
1376 TLAN_DBG(TLAN_DEBUG_TX,
1377 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1378 priv->tx_head, priv->tx_tail);
1379 head_list = priv->tx_list + priv->tx_head;
1380
1381 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1382 && (ack < 255)) {
1383 struct sk_buff *skb = tlan_get_skb(head_list);
1384
1385 ack++;
1386 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1387 max(skb->len,
1388 (unsigned int)TLAN_MIN_FRAME_SIZE),
1389 PCI_DMA_TODEVICE);
1390 dev_kfree_skb_any(skb);
1391 head_list->buffer[8].address = 0;
1392 head_list->buffer[9].address = 0;
1393
1394 if (tmp_c_stat & TLAN_CSTAT_EOC)
1395 eoc = 1;
1396
1397 dev->stats.tx_bytes += head_list->frame_size;
1398
1399 head_list->c_stat = TLAN_CSTAT_UNUSED;
1400 netif_start_queue(dev);
1401 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1402 head_list = priv->tx_list + priv->tx_head;
1403 }
1404
1405 if (!ack)
1406 netdev_info(dev,
1407 "Received interrupt for uncompleted TX frame\n");
1408
1409 if (eoc) {
1410 TLAN_DBG(TLAN_DEBUG_TX,
1411 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1412 priv->tx_head, priv->tx_tail);
1413 head_list = priv->tx_list + priv->tx_head;
1414 head_list_phys = priv->tx_list_dma
1415 + sizeof(struct tlan_list)*priv->tx_head;
1416 if ((head_list->c_stat & TLAN_CSTAT_READY)
1417 == TLAN_CSTAT_READY) {
1418 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1419 ack |= TLAN_HC_GO;
1420 } else {
1421 priv->tx_in_progress = 0;
1422 }
1423 }
1424
1425 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1426 tlan_dio_write8(dev->base_addr,
1427 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1428 if (priv->timer.function == NULL) {
1429 priv->timer.function = tlan_timer;
1430 priv->timer.data = (unsigned long) dev;
1431 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1432 priv->timer_set_at = jiffies;
1433 priv->timer_type = TLAN_TIMER_ACTIVITY;
1434 add_timer(&priv->timer);
1435 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1436 priv->timer_set_at = jiffies;
1437 }
1438 }
1439
1440 return ack;
1441
1442 }
1443
1444
1445
1446
1447 /***************************************************************
1448 * TLan_HandleStatOverflow
1449 *
1450 * Returns:
1451 * 1
1452 * Parms:
1453 * dev Device assigned the IRQ that was
1454 * raised.
1455 * host_int The contents of the HOST_INT
1456 * port.
1457 *
1458 * This function handles the Statistics Overflow interrupt
1459 * which means that one or more of the TLAN statistics
1460 * registers has reached 1/2 capacity and needs to be read.
1461 *
1462 **************************************************************/
1463
1464 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1465 {
1466 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1467
1468 return 1;
1469
1470 }
1471
1472
1473
1474
1475 /***************************************************************
1476 * TLan_HandleRxEOF
1477 *
1478 * Returns:
1479 * 1
1480 * Parms:
1481 * dev Device assigned the IRQ that was
1482 * raised.
1483 * host_int The contents of the HOST_INT
1484 * port.
1485 *
1486 * This function handles the Rx EOF interrupt which
1487 * indicates a frame has been received by the adapter from
1488 * the net and the frame has been transferred to memory.
1489 * The function determines the bounce buffer the frame has
1490 * been loaded into, creates a new sk_buff big enough to
1491 * hold the frame, and sends it to protocol stack. It
1492 * then resets the used buffer and appends it to the end
1493 * of the list. If the frame was the last in the Rx
1494 * channel (EOC), the function restarts the receive channel
1495 * by sending an Rx Go command to the adapter. Then it
1496 * activates/continues the activity LED.
1497 *
1498 **************************************************************/
1499
1500 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1501 {
1502 struct tlan_priv *priv = netdev_priv(dev);
1503 u32 ack = 0;
1504 int eoc = 0;
1505 struct tlan_list *head_list;
1506 struct sk_buff *skb;
1507 struct tlan_list *tail_list;
1508 u16 tmp_c_stat;
1509 dma_addr_t head_list_phys;
1510
1511 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1512 priv->rx_head, priv->rx_tail);
1513 head_list = priv->rx_list + priv->rx_head;
1514 head_list_phys =
1515 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1516
1517 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1518 && (ack < 255)) {
1519 dma_addr_t frame_dma = head_list->buffer[0].address;
1520 u32 frame_size = head_list->frame_size;
1521 struct sk_buff *new_skb;
1522
1523 ack++;
1524 if (tmp_c_stat & TLAN_CSTAT_EOC)
1525 eoc = 1;
1526
1527 new_skb = netdev_alloc_skb_ip_align(dev,
1528 TLAN_MAX_FRAME_SIZE + 5);
1529 if (!new_skb)
1530 goto drop_and_reuse;
1531
1532 skb = tlan_get_skb(head_list);
1533 pci_unmap_single(priv->pci_dev, frame_dma,
1534 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1535 skb_put(skb, frame_size);
1536
1537 dev->stats.rx_bytes += frame_size;
1538
1539 skb->protocol = eth_type_trans(skb, dev);
1540 netif_rx(skb);
1541
1542 head_list->buffer[0].address =
1543 pci_map_single(priv->pci_dev, new_skb->data,
1544 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1545
1546 tlan_store_skb(head_list, new_skb);
1547 drop_and_reuse:
1548 head_list->forward = 0;
1549 head_list->c_stat = 0;
1550 tail_list = priv->rx_list + priv->rx_tail;
1551 tail_list->forward = head_list_phys;
1552
1553 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1554 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1555 head_list = priv->rx_list + priv->rx_head;
1556 head_list_phys = priv->rx_list_dma
1557 + sizeof(struct tlan_list)*priv->rx_head;
1558 }
1559
1560 if (!ack)
1561 netdev_info(dev,
1562 "Received interrupt for uncompleted RX frame\n");
1563
1564
1565 if (eoc) {
1566 TLAN_DBG(TLAN_DEBUG_RX,
1567 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1568 priv->rx_head, priv->rx_tail);
1569 head_list = priv->rx_list + priv->rx_head;
1570 head_list_phys = priv->rx_list_dma
1571 + sizeof(struct tlan_list)*priv->rx_head;
1572 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1573 ack |= TLAN_HC_GO | TLAN_HC_RT;
1574 priv->rx_eoc_count++;
1575 }
1576
1577 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1578 tlan_dio_write8(dev->base_addr,
1579 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1580 if (priv->timer.function == NULL) {
1581 priv->timer.function = tlan_timer;
1582 priv->timer.data = (unsigned long) dev;
1583 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1584 priv->timer_set_at = jiffies;
1585 priv->timer_type = TLAN_TIMER_ACTIVITY;
1586 add_timer(&priv->timer);
1587 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1588 priv->timer_set_at = jiffies;
1589 }
1590 }
1591
1592 return ack;
1593
1594 }
1595
1596
1597
1598
1599 /***************************************************************
1600 * tlan_handle_dummy
1601 *
1602 * Returns:
1603 * 1
1604 * Parms:
1605 * dev Device assigned the IRQ that was
1606 * raised.
1607 * host_int The contents of the HOST_INT
1608 * port.
1609 *
1610 * This function handles the Dummy interrupt, which is
1611 * raised whenever a test interrupt is generated by setting
1612 * the Req_Int bit of HOST_CMD to 1.
1613 *
1614 **************************************************************/
1615
1616 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1617 {
1618 netdev_info(dev, "Test interrupt\n");
1619 return 1;
1620
1621 }
1622
1623
1624
1625
1626 /***************************************************************
1627 * tlan_handle_tx_eoc
1628 *
1629 * Returns:
1630 * 1
1631 * Parms:
1632 * dev Device assigned the IRQ that was
1633 * raised.
1634 * host_int The contents of the HOST_INT
1635 * port.
1636 *
1637 * This driver is structured to determine EOC occurrences by
1638 * reading the CSTAT member of the list structure. Tx EOC
1639 * interrupts are disabled via the DIO INTDIS register.
1640 * However, TLAN chips before revision 3.0 didn't have this
1641 * functionality, so process EOC events if this is the
1642 * case.
1643 *
1644 **************************************************************/
1645
1646 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1647 {
1648 struct tlan_priv *priv = netdev_priv(dev);
1649 struct tlan_list *head_list;
1650 dma_addr_t head_list_phys;
1651 u32 ack = 1;
1652
1653 if (priv->tlan_rev < 0x30) {
1654 TLAN_DBG(TLAN_DEBUG_TX,
1655 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1656 priv->tx_head, priv->tx_tail);
1657 head_list = priv->tx_list + priv->tx_head;
1658 head_list_phys = priv->tx_list_dma
1659 + sizeof(struct tlan_list)*priv->tx_head;
1660 if ((head_list->c_stat & TLAN_CSTAT_READY)
1661 == TLAN_CSTAT_READY) {
1662 netif_stop_queue(dev);
1663 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1664 ack |= TLAN_HC_GO;
1665 } else {
1666 priv->tx_in_progress = 0;
1667 }
1668 }
1669
1670 return ack;
1671
1672 }
1673
1674
1675
1676
1677 /***************************************************************
1678 * tlan_handle_status_check
1679 *
1680 * Returns:
1681 * 0 if Adapter check, 1 if Network Status check.
1682 * Parms:
1683 * dev Device assigned the IRQ that was
1684 * raised.
1685 * host_int The contents of the HOST_INT
1686 * port.
1687 *
1688 * This function handles Adapter Check/Network Status
1689 * interrupts generated by the adapter. It checks the
1690 * vector in the HOST_INT register to determine if it is
1691 * an Adapter Check interrupt. If so, it resets the
1692 * adapter. Otherwise it clears the status registers
1693 * and services the PHY.
1694 *
1695 **************************************************************/
1696
1697 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1698 {
1699 struct tlan_priv *priv = netdev_priv(dev);
1700 u32 ack;
1701 u32 error;
1702 u8 net_sts;
1703 u32 phy;
1704 u16 tlphy_ctl;
1705 u16 tlphy_sts;
1706
1707 ack = 1;
1708 if (host_int & TLAN_HI_IV_MASK) {
1709 netif_stop_queue(dev);
1710 error = inl(dev->base_addr + TLAN_CH_PARM);
1711 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1712 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1713 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1714
1715 schedule_work(&priv->tlan_tqueue);
1716
1717 netif_wake_queue(dev);
1718 ack = 0;
1719 } else {
1720 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1721 phy = priv->phy[priv->phy_num];
1722
1723 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1724 if (net_sts) {
1725 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1726 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1727 dev->name, (unsigned) net_sts);
1728 }
1729 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1730 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1731 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1732 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1733 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1734 tlphy_ctl |= TLAN_TC_SWAPOL;
1735 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1736 tlphy_ctl);
1737 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1738 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1739 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1740 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1741 tlphy_ctl);
1742 }
1743
1744 if (debug)
1745 tlan_phy_print(dev);
1746 }
1747 }
1748
1749 return ack;
1750
1751 }
1752
1753
1754
1755
1756 /***************************************************************
1757 * tlan_handle_rx_eoc
1758 *
1759 * Returns:
1760 * 1
1761 * Parms:
1762 * dev Device assigned the IRQ that was
1763 * raised.
1764 * host_int The contents of the HOST_INT
1765 * port.
1766 *
1767 * This driver is structured to determine EOC occurrences by
1768 * reading the CSTAT member of the list structure. Rx EOC
1769 * interrupts are disabled via the DIO INTDIS register.
1770 * However, TLAN chips before revision 3.0 didn't have this
1771 * CSTAT member or a INTDIS register, so if this chip is
1772 * pre-3.0, process EOC interrupts normally.
1773 *
1774 **************************************************************/
1775
1776 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1777 {
1778 struct tlan_priv *priv = netdev_priv(dev);
1779 dma_addr_t head_list_phys;
1780 u32 ack = 1;
1781
1782 if (priv->tlan_rev < 0x30) {
1783 TLAN_DBG(TLAN_DEBUG_RX,
1784 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1785 priv->rx_head, priv->rx_tail);
1786 head_list_phys = priv->rx_list_dma
1787 + sizeof(struct tlan_list)*priv->rx_head;
1788 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1789 ack |= TLAN_HC_GO | TLAN_HC_RT;
1790 priv->rx_eoc_count++;
1791 }
1792
1793 return ack;
1794
1795 }
1796
1797
1798
1799
1800 /*****************************************************************************
1801 ******************************************************************************
1802
1803 ThunderLAN driver timer function
1804
1805 ******************************************************************************
1806 *****************************************************************************/
1807
1808
1809 /***************************************************************
1810 * tlan_timer
1811 *
1812 * Returns:
1813 * Nothing
1814 * Parms:
1815 * data A value given to add timer when
1816 * add_timer was called.
1817 *
1818 * This function handles timed functionality for the
1819 * TLAN driver. The two current timer uses are for
1820 * delaying for autonegotionation and driving the ACT LED.
1821 * - Autonegotiation requires being allowed about
1822 * 2 1/2 seconds before attempting to transmit a
1823 * packet. It would be a very bad thing to hang
1824 * the kernel this long, so the driver doesn't
1825 * allow transmission 'til after this time, for
1826 * certain PHYs. It would be much nicer if all
1827 * PHYs were interrupt-capable like the internal
1828 * PHY.
1829 * - The ACT LED, which shows adapter activity, is
1830 * driven by the driver, and so must be left on
1831 * for a short period to power up the LED so it
1832 * can be seen. This delay can be changed by
1833 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1834 * if desired. 100 ms produces a slightly
1835 * sluggish response.
1836 *
1837 **************************************************************/
1838
1839 static void tlan_timer(unsigned long data)
1840 {
1841 struct net_device *dev = (struct net_device *) data;
1842 struct tlan_priv *priv = netdev_priv(dev);
1843 u32 elapsed;
1844 unsigned long flags = 0;
1845
1846 priv->timer.function = NULL;
1847
1848 switch (priv->timer_type) {
1849 case TLAN_TIMER_PHY_PDOWN:
1850 tlan_phy_power_down(dev);
1851 break;
1852 case TLAN_TIMER_PHY_PUP:
1853 tlan_phy_power_up(dev);
1854 break;
1855 case TLAN_TIMER_PHY_RESET:
1856 tlan_phy_reset(dev);
1857 break;
1858 case TLAN_TIMER_PHY_START_LINK:
1859 tlan_phy_start_link(dev);
1860 break;
1861 case TLAN_TIMER_PHY_FINISH_AN:
1862 tlan_phy_finish_auto_neg(dev);
1863 break;
1864 case TLAN_TIMER_FINISH_RESET:
1865 tlan_finish_reset(dev);
1866 break;
1867 case TLAN_TIMER_ACTIVITY:
1868 spin_lock_irqsave(&priv->lock, flags);
1869 if (priv->timer.function == NULL) {
1870 elapsed = jiffies - priv->timer_set_at;
1871 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1872 tlan_dio_write8(dev->base_addr,
1873 TLAN_LED_REG, TLAN_LED_LINK);
1874 } else {
1875 priv->timer.function = tlan_timer;
1876 priv->timer.expires = priv->timer_set_at
1877 + TLAN_TIMER_ACT_DELAY;
1878 spin_unlock_irqrestore(&priv->lock, flags);
1879 add_timer(&priv->timer);
1880 break;
1881 }
1882 }
1883 spin_unlock_irqrestore(&priv->lock, flags);
1884 break;
1885 default:
1886 break;
1887 }
1888
1889 }
1890
1891
1892 /*****************************************************************************
1893 ******************************************************************************
1894
1895 ThunderLAN driver adapter related routines
1896
1897 ******************************************************************************
1898 *****************************************************************************/
1899
1900
1901 /***************************************************************
1902 * tlan_reset_lists
1903 *
1904 * Returns:
1905 * Nothing
1906 * Parms:
1907 * dev The device structure with the list
1908 * stuctures to be reset.
1909 *
1910 * This routine sets the variables associated with managing
1911 * the TLAN lists to their initial values.
1912 *
1913 **************************************************************/
1914
1915 static void tlan_reset_lists(struct net_device *dev)
1916 {
1917 struct tlan_priv *priv = netdev_priv(dev);
1918 int i;
1919 struct tlan_list *list;
1920 dma_addr_t list_phys;
1921 struct sk_buff *skb;
1922
1923 priv->tx_head = 0;
1924 priv->tx_tail = 0;
1925 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1926 list = priv->tx_list + i;
1927 list->c_stat = TLAN_CSTAT_UNUSED;
1928 list->buffer[0].address = 0;
1929 list->buffer[2].count = 0;
1930 list->buffer[2].address = 0;
1931 list->buffer[8].address = 0;
1932 list->buffer[9].address = 0;
1933 }
1934
1935 priv->rx_head = 0;
1936 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1937 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1938 list = priv->rx_list + i;
1939 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1940 list->c_stat = TLAN_CSTAT_READY;
1941 list->frame_size = TLAN_MAX_FRAME_SIZE;
1942 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1943 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1944 if (!skb)
1945 break;
1946
1947 list->buffer[0].address = pci_map_single(priv->pci_dev,
1948 skb->data,
1949 TLAN_MAX_FRAME_SIZE,
1950 PCI_DMA_FROMDEVICE);
1951 tlan_store_skb(list, skb);
1952 list->buffer[1].count = 0;
1953 list->buffer[1].address = 0;
1954 list->forward = list_phys + sizeof(struct tlan_list);
1955 }
1956
1957 /* in case ran out of memory early, clear bits */
1958 while (i < TLAN_NUM_RX_LISTS) {
1959 tlan_store_skb(priv->rx_list + i, NULL);
1960 ++i;
1961 }
1962 list->forward = 0;
1963
1964 }
1965
1966
1967 static void tlan_free_lists(struct net_device *dev)
1968 {
1969 struct tlan_priv *priv = netdev_priv(dev);
1970 int i;
1971 struct tlan_list *list;
1972 struct sk_buff *skb;
1973
1974 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1975 list = priv->tx_list + i;
1976 skb = tlan_get_skb(list);
1977 if (skb) {
1978 pci_unmap_single(
1979 priv->pci_dev,
1980 list->buffer[0].address,
1981 max(skb->len,
1982 (unsigned int)TLAN_MIN_FRAME_SIZE),
1983 PCI_DMA_TODEVICE);
1984 dev_kfree_skb_any(skb);
1985 list->buffer[8].address = 0;
1986 list->buffer[9].address = 0;
1987 }
1988 }
1989
1990 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1991 list = priv->rx_list + i;
1992 skb = tlan_get_skb(list);
1993 if (skb) {
1994 pci_unmap_single(priv->pci_dev,
1995 list->buffer[0].address,
1996 TLAN_MAX_FRAME_SIZE,
1997 PCI_DMA_FROMDEVICE);
1998 dev_kfree_skb_any(skb);
1999 list->buffer[8].address = 0;
2000 list->buffer[9].address = 0;
2001 }
2002 }
2003 }
2004
2005
2006
2007
2008 /***************************************************************
2009 * tlan_print_dio
2010 *
2011 * Returns:
2012 * Nothing
2013 * Parms:
2014 * io_base Base IO port of the device of
2015 * which to print DIO registers.
2016 *
2017 * This function prints out all the internal (DIO)
2018 * registers of a TLAN chip.
2019 *
2020 **************************************************************/
2021
2022 static void tlan_print_dio(u16 io_base)
2023 {
2024 u32 data0, data1;
2025 int i;
2026
2027 pr_info("Contents of internal registers for io base 0x%04hx\n",
2028 io_base);
2029 pr_info("Off. +0 +4\n");
2030 for (i = 0; i < 0x4C; i += 8) {
2031 data0 = tlan_dio_read32(io_base, i);
2032 data1 = tlan_dio_read32(io_base, i + 0x4);
2033 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2034 }
2035
2036 }
2037
2038
2039
2040
2041 /***************************************************************
2042 * TLan_PrintList
2043 *
2044 * Returns:
2045 * Nothing
2046 * Parms:
2047 * list A pointer to the struct tlan_list structure to
2048 * be printed.
2049 * type A string to designate type of list,
2050 * "Rx" or "Tx".
2051 * num The index of the list.
2052 *
2053 * This function prints out the contents of the list
2054 * pointed to by the list parameter.
2055 *
2056 **************************************************************/
2057
2058 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2059 {
2060 int i;
2061
2062 pr_info("%s List %d at %p\n", type, num, list);
2063 pr_info(" Forward = 0x%08x\n", list->forward);
2064 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2065 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2066 /* for (i = 0; i < 10; i++) { */
2067 for (i = 0; i < 2; i++) {
2068 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2069 i, list->buffer[i].count, list->buffer[i].address);
2070 }
2071
2072 }
2073
2074
2075
2076
2077 /***************************************************************
2078 * tlan_read_and_clear_stats
2079 *
2080 * Returns:
2081 * Nothing
2082 * Parms:
2083 * dev Pointer to device structure of adapter
2084 * to which to read stats.
2085 * record Flag indicating whether to add
2086 *
2087 * This functions reads all the internal status registers
2088 * of the TLAN chip, which clears them as a side effect.
2089 * It then either adds the values to the device's status
2090 * struct, or discards them, depending on whether record
2091 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2092 *
2093 **************************************************************/
2094
2095 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2096 {
2097 u32 tx_good, tx_under;
2098 u32 rx_good, rx_over;
2099 u32 def_tx, crc, code;
2100 u32 multi_col, single_col;
2101 u32 excess_col, late_col, loss;
2102
2103 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2104 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2105 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2106 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2107 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2108
2109 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2110 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2111 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2112 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2113 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2114
2115 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2116 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2117 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2118 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2119 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2120
2121 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2122 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2123 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2124 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2125 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2126
2127 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2128 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2129 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2130 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2131
2132 if (record) {
2133 dev->stats.rx_packets += rx_good;
2134 dev->stats.rx_errors += rx_over + crc + code;
2135 dev->stats.tx_packets += tx_good;
2136 dev->stats.tx_errors += tx_under + loss;
2137 dev->stats.collisions += multi_col
2138 + single_col + excess_col + late_col;
2139
2140 dev->stats.rx_over_errors += rx_over;
2141 dev->stats.rx_crc_errors += crc;
2142 dev->stats.rx_frame_errors += code;
2143
2144 dev->stats.tx_aborted_errors += tx_under;
2145 dev->stats.tx_carrier_errors += loss;
2146 }
2147
2148 }
2149
2150
2151
2152
2153 /***************************************************************
2154 * TLan_Reset
2155 *
2156 * Returns:
2157 * 0
2158 * Parms:
2159 * dev Pointer to device structure of adapter
2160 * to be reset.
2161 *
2162 * This function resets the adapter and it's physical
2163 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2164 * Programmer's Guide" for details. The routine tries to
2165 * implement what is detailed there, though adjustments
2166 * have been made.
2167 *
2168 **************************************************************/
2169
2170 static void
2171 tlan_reset_adapter(struct net_device *dev)
2172 {
2173 struct tlan_priv *priv = netdev_priv(dev);
2174 int i;
2175 u32 addr;
2176 u32 data;
2177 u8 data8;
2178
2179 priv->tlan_full_duplex = false;
2180 priv->phy_online = 0;
2181 netif_carrier_off(dev);
2182
2183 /* 1. Assert reset bit. */
2184
2185 data = inl(dev->base_addr + TLAN_HOST_CMD);
2186 data |= TLAN_HC_AD_RST;
2187 outl(data, dev->base_addr + TLAN_HOST_CMD);
2188
2189 udelay(1000);
2190
2191 /* 2. Turn off interrupts. (Probably isn't necessary) */
2192
2193 data = inl(dev->base_addr + TLAN_HOST_CMD);
2194 data |= TLAN_HC_INT_OFF;
2195 outl(data, dev->base_addr + TLAN_HOST_CMD);
2196
2197 /* 3. Clear AREGs and HASHs. */
2198
2199 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2200 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2201
2202 /* 4. Setup NetConfig register. */
2203
2204 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2205 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2206
2207 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2208
2209 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2210 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2211
2212 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2213
2214 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2215 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2216 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2217
2218 /* 7. Setup the remaining registers. */
2219
2220 if (priv->tlan_rev >= 0x30) {
2221 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2222 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2223 }
2224 tlan_phy_detect(dev);
2225 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2226
2227 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2228 data |= TLAN_NET_CFG_BIT;
2229 if (priv->aui == 1) {
2230 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2231 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2232 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2233 priv->tlan_full_duplex = true;
2234 } else {
2235 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2236 }
2237 }
2238
2239 /* don't power down internal PHY if we're going to use it */
2240 if (priv->phy_num == 0 ||
2241 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2242 data |= TLAN_NET_CFG_PHY_EN;
2243 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2244
2245 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2246 tlan_finish_reset(dev);
2247 else
2248 tlan_phy_power_down(dev);
2249
2250 }
2251
2252
2253
2254
2255 static void
2256 tlan_finish_reset(struct net_device *dev)
2257 {
2258 struct tlan_priv *priv = netdev_priv(dev);
2259 u8 data;
2260 u32 phy;
2261 u8 sio;
2262 u16 status;
2263 u16 partner;
2264 u16 tlphy_ctl;
2265 u16 tlphy_par;
2266 u16 tlphy_id1, tlphy_id2;
2267 int i;
2268
2269 phy = priv->phy[priv->phy_num];
2270
2271 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2272 if (priv->tlan_full_duplex)
2273 data |= TLAN_NET_CMD_DUPLEX;
2274 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2275 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2276 if (priv->phy_num == 0)
2277 data |= TLAN_NET_MASK_MASK7;
2278 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2279 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2280 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2281 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2282
2283 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2284 (priv->aui)) {
2285 status = MII_GS_LINK;
2286 netdev_info(dev, "Link forced\n");
2287 } else {
2288 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2289 udelay(1000);
2290 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2291 if (status & MII_GS_LINK) {
2292 /* We only support link info on Nat.Sem. PHY's */
2293 if ((tlphy_id1 == NAT_SEM_ID1) &&
2294 (tlphy_id2 == NAT_SEM_ID2)) {
2295 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2296 &partner);
2297 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2298 &tlphy_par);
2299
2300 netdev_info(dev,
2301 "Link active, %s %uMbps %s-Duplex\n",
2302 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2303 ? "forced" : "Autonegotiation enabled,",
2304 tlphy_par & TLAN_PHY_SPEED_100
2305 ? 100 : 10,
2306 tlphy_par & TLAN_PHY_DUPLEX_FULL
2307 ? "Full" : "Half");
2308
2309 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2310 netdev_info(dev, "Partner capability:");
2311 for (i = 5; i < 10; i++)
2312 if (partner & (1 << i))
2313 pr_cont(" %s",
2314 media[i-5]);
2315 pr_cont("\n");
2316 }
2317 } else
2318 netdev_info(dev, "Link active\n");
2319 /* Enabling link beat monitoring */
2320 priv->media_timer.function = tlan_phy_monitor;
2321 priv->media_timer.data = (unsigned long) dev;
2322 priv->media_timer.expires = jiffies + HZ;
2323 add_timer(&priv->media_timer);
2324 }
2325 }
2326
2327 if (priv->phy_num == 0) {
2328 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2329 tlphy_ctl |= TLAN_TC_INTEN;
2330 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2331 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2332 sio |= TLAN_NET_SIO_MINTEN;
2333 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2334 }
2335
2336 if (status & MII_GS_LINK) {
2337 tlan_set_mac(dev, 0, dev->dev_addr);
2338 priv->phy_online = 1;
2339 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2340 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2341 outb((TLAN_HC_REQ_INT >> 8),
2342 dev->base_addr + TLAN_HOST_CMD + 1);
2343 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2344 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2345 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2346 netif_carrier_on(dev);
2347 } else {
2348 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2349 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2350 return;
2351 }
2352 tlan_set_multicast_list(dev);
2353
2354 }
2355
2356
2357
2358
2359 /***************************************************************
2360 * tlan_set_mac
2361 *
2362 * Returns:
2363 * Nothing
2364 * Parms:
2365 * dev Pointer to device structure of adapter
2366 * on which to change the AREG.
2367 * areg The AREG to set the address in (0 - 3).
2368 * mac A pointer to an array of chars. Each
2369 * element stores one byte of the address.
2370 * IE, it isn't in ascii.
2371 *
2372 * This function transfers a MAC address to one of the
2373 * TLAN AREGs (address registers). The TLAN chip locks
2374 * the register on writing to offset 0 and unlocks the
2375 * register after writing to offset 5. If NULL is passed
2376 * in mac, then the AREG is filled with 0's.
2377 *
2378 **************************************************************/
2379
2380 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2381 {
2382 int i;
2383
2384 areg *= 6;
2385
2386 if (mac != NULL) {
2387 for (i = 0; i < 6; i++)
2388 tlan_dio_write8(dev->base_addr,
2389 TLAN_AREG_0 + areg + i, mac[i]);
2390 } else {
2391 for (i = 0; i < 6; i++)
2392 tlan_dio_write8(dev->base_addr,
2393 TLAN_AREG_0 + areg + i, 0);
2394 }
2395
2396 }
2397
2398
2399
2400
2401 /*****************************************************************************
2402 ******************************************************************************
2403
2404 ThunderLAN driver PHY layer routines
2405
2406 ******************************************************************************
2407 *****************************************************************************/
2408
2409
2410
2411 /*********************************************************************
2412 * tlan_phy_print
2413 *
2414 * Returns:
2415 * Nothing
2416 * Parms:
2417 * dev A pointer to the device structure of the
2418 * TLAN device having the PHYs to be detailed.
2419 *
2420 * This function prints the registers a PHY (aka transceiver).
2421 *
2422 ********************************************************************/
2423
2424 static void tlan_phy_print(struct net_device *dev)
2425 {
2426 struct tlan_priv *priv = netdev_priv(dev);
2427 u16 i, data0, data1, data2, data3, phy;
2428
2429 phy = priv->phy[priv->phy_num];
2430
2431 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2432 netdev_info(dev, "Unmanaged PHY\n");
2433 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2434 netdev_info(dev, "PHY 0x%02x\n", phy);
2435 pr_info(" Off. +0 +1 +2 +3\n");
2436 for (i = 0; i < 0x20; i += 4) {
2437 tlan_mii_read_reg(dev, phy, i, &data0);
2438 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2439 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2440 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2441 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2442 i, data0, data1, data2, data3);
2443 }
2444 } else {
2445 netdev_info(dev, "Invalid PHY\n");
2446 }
2447
2448 }
2449
2450
2451
2452
2453 /*********************************************************************
2454 * tlan_phy_detect
2455 *
2456 * Returns:
2457 * Nothing
2458 * Parms:
2459 * dev A pointer to the device structure of the adapter
2460 * for which the PHY needs determined.
2461 *
2462 * So far I've found that adapters which have external PHYs
2463 * may also use the internal PHY for part of the functionality.
2464 * (eg, AUI/Thinnet). This function finds out if this TLAN
2465 * chip has an internal PHY, and then finds the first external
2466 * PHY (starting from address 0) if it exists).
2467 *
2468 ********************************************************************/
2469
2470 static void tlan_phy_detect(struct net_device *dev)
2471 {
2472 struct tlan_priv *priv = netdev_priv(dev);
2473 u16 control;
2474 u16 hi;
2475 u16 lo;
2476 u32 phy;
2477
2478 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2479 priv->phy_num = 0xffff;
2480 return;
2481 }
2482
2483 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2484
2485 if (hi != 0xffff)
2486 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2487 else
2488 priv->phy[0] = TLAN_PHY_NONE;
2489
2490 priv->phy[1] = TLAN_PHY_NONE;
2491 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2492 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2493 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2494 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2495 if ((control != 0xffff) ||
2496 (hi != 0xffff) || (lo != 0xffff)) {
2497 TLAN_DBG(TLAN_DEBUG_GNRL,
2498 "PHY found at %02x %04x %04x %04x\n",
2499 phy, control, hi, lo);
2500 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2501 (phy != TLAN_PHY_MAX_ADDR)) {
2502 priv->phy[1] = phy;
2503 }
2504 }
2505 }
2506
2507 if (priv->phy[1] != TLAN_PHY_NONE)
2508 priv->phy_num = 1;
2509 else if (priv->phy[0] != TLAN_PHY_NONE)
2510 priv->phy_num = 0;
2511 else
2512 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2513
2514 }
2515
2516
2517
2518
2519 static void tlan_phy_power_down(struct net_device *dev)
2520 {
2521 struct tlan_priv *priv = netdev_priv(dev);
2522 u16 value;
2523
2524 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2525 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2526 tlan_mii_sync(dev->base_addr);
2527 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2528 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2529 /* if using internal PHY, the external PHY must be powered on */
2530 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2531 value = MII_GC_ISOLATE; /* just isolate it from MII */
2532 tlan_mii_sync(dev->base_addr);
2533 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2534 }
2535
2536 /* Wait for 50 ms and powerup
2537 * This is abitrary. It is intended to make sure the
2538 * transceiver settles.
2539 */
2540 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2541
2542 }
2543
2544
2545
2546
2547 static void tlan_phy_power_up(struct net_device *dev)
2548 {
2549 struct tlan_priv *priv = netdev_priv(dev);
2550 u16 value;
2551
2552 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2553 tlan_mii_sync(dev->base_addr);
2554 value = MII_GC_LOOPBK;
2555 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2556 tlan_mii_sync(dev->base_addr);
2557 /* Wait for 500 ms and reset the
2558 * transceiver. The TLAN docs say both 50 ms and
2559 * 500 ms, so do the longer, just in case.
2560 */
2561 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2562
2563 }
2564
2565
2566
2567
2568 static void tlan_phy_reset(struct net_device *dev)
2569 {
2570 struct tlan_priv *priv = netdev_priv(dev);
2571 u16 phy;
2572 u16 value;
2573 unsigned long timeout = jiffies + HZ;
2574
2575 phy = priv->phy[priv->phy_num];
2576
2577 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2578 tlan_mii_sync(dev->base_addr);
2579 value = MII_GC_LOOPBK | MII_GC_RESET;
2580 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2581 do {
2582 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2583 if (time_after(jiffies, timeout)) {
2584 netdev_err(dev, "PHY reset timeout\n");
2585 return;
2586 }
2587 } while (value & MII_GC_RESET);
2588
2589 /* Wait for 500 ms and initialize.
2590 * I don't remember why I wait this long.
2591 * I've changed this to 50ms, as it seems long enough.
2592 */
2593 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2594
2595 }
2596
2597
2598
2599
2600 static void tlan_phy_start_link(struct net_device *dev)
2601 {
2602 struct tlan_priv *priv = netdev_priv(dev);
2603 u16 ability;
2604 u16 control;
2605 u16 data;
2606 u16 phy;
2607 u16 status;
2608 u16 tctl;
2609
2610 phy = priv->phy[priv->phy_num];
2611 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2612 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2613 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2614
2615 if ((status & MII_GS_AUTONEG) &&
2616 (!priv->aui)) {
2617 ability = status >> 11;
2618 if (priv->speed == TLAN_SPEED_10 &&
2619 priv->duplex == TLAN_DUPLEX_HALF) {
2620 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2621 } else if (priv->speed == TLAN_SPEED_10 &&
2622 priv->duplex == TLAN_DUPLEX_FULL) {
2623 priv->tlan_full_duplex = true;
2624 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2625 } else if (priv->speed == TLAN_SPEED_100 &&
2626 priv->duplex == TLAN_DUPLEX_HALF) {
2627 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2628 } else if (priv->speed == TLAN_SPEED_100 &&
2629 priv->duplex == TLAN_DUPLEX_FULL) {
2630 priv->tlan_full_duplex = true;
2631 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2632 } else {
2633
2634 /* Set Auto-Neg advertisement */
2635 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2636 (ability << 5) | 1);
2637 /* Enablee Auto-Neg */
2638 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2639 /* Restart Auto-Neg */
2640 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2641 /* Wait for 4 sec for autonegotiation
2642 * to complete. The max spec time is less than this
2643 * but the card need additional time to start AN.
2644 * .5 sec should be plenty extra.
2645 */
2646 netdev_info(dev, "Starting autonegotiation\n");
2647 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2648 return;
2649 }
2650
2651 }
2652
2653 if ((priv->aui) && (priv->phy_num != 0)) {
2654 priv->phy_num = 0;
2655 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2656 | TLAN_NET_CFG_PHY_EN;
2657 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2658 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2659 return;
2660 } else if (priv->phy_num == 0) {
2661 control = 0;
2662 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2663 if (priv->aui) {
2664 tctl |= TLAN_TC_AUISEL;
2665 } else {
2666 tctl &= ~TLAN_TC_AUISEL;
2667 if (priv->duplex == TLAN_DUPLEX_FULL) {
2668 control |= MII_GC_DUPLEX;
2669 priv->tlan_full_duplex = true;
2670 }
2671 if (priv->speed == TLAN_SPEED_100)
2672 control |= MII_GC_SPEEDSEL;
2673 }
2674 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2675 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2676 }
2677
2678 /* Wait for 2 sec to give the transceiver time
2679 * to establish link.
2680 */
2681 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2682
2683 }
2684
2685
2686
2687
2688 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2689 {
2690 struct tlan_priv *priv = netdev_priv(dev);
2691 u16 an_adv;
2692 u16 an_lpa;
2693 u16 mode;
2694 u16 phy;
2695 u16 status;
2696
2697 phy = priv->phy[priv->phy_num];
2698
2699 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2700 udelay(1000);
2701 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2702
2703 if (!(status & MII_GS_AUTOCMPLT)) {
2704 /* Wait for 8 sec to give the process
2705 * more time. Perhaps we should fail after a while.
2706 */
2707 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2708 return;
2709 }
2710
2711 netdev_info(dev, "Autonegotiation complete\n");
2712 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2713 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2714 mode = an_adv & an_lpa & 0x03E0;
2715 if (mode & 0x0100)
2716 priv->tlan_full_duplex = true;
2717 else if (!(mode & 0x0080) && (mode & 0x0040))
2718 priv->tlan_full_duplex = true;
2719
2720 /* switch to internal PHY for 10 Mbps */
2721 if ((!(mode & 0x0180)) &&
2722 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2723 (priv->phy_num != 0)) {
2724 priv->phy_num = 0;
2725 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2726 return;
2727 }
2728
2729 if (priv->phy_num == 0) {
2730 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2731 (an_adv & an_lpa & 0x0040)) {
2732 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2733 MII_GC_AUTOENB | MII_GC_DUPLEX);
2734 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2735 } else {
2736 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2737 MII_GC_AUTOENB);
2738 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2739 }
2740 }
2741
2742 /* Wait for 100 ms. No reason in partiticular.
2743 */
2744 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2745
2746 }
2747
2748
2749 /*********************************************************************
2750 *
2751 * tlan_phy_monitor
2752 *
2753 * Returns:
2754 * None
2755 *
2756 * Params:
2757 * data The device structure of this device.
2758 *
2759 *
2760 * This function monitors PHY condition by reading the status
2761 * register via the MII bus, controls LINK LED and notifies the
2762 * kernel about link state.
2763 *
2764 *******************************************************************/
2765
2766 static void tlan_phy_monitor(unsigned long data)
2767 {
2768 struct net_device *dev = (struct net_device *) data;
2769 struct tlan_priv *priv = netdev_priv(dev);
2770 u16 phy;
2771 u16 phy_status;
2772
2773 phy = priv->phy[priv->phy_num];
2774
2775 /* Get PHY status register */
2776 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2777
2778 /* Check if link has been lost */
2779 if (!(phy_status & MII_GS_LINK)) {
2780 if (netif_carrier_ok(dev)) {
2781 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2782 dev->name);
2783 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2784 netif_carrier_off(dev);
2785 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2786 /* power down internal PHY */
2787 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2788 MII_GC_ISOLATE;
2789
2790 tlan_mii_sync(dev->base_addr);
2791 tlan_mii_write_reg(dev, priv->phy[0],
2792 MII_GEN_CTL, data);
2793 /* set to external PHY */
2794 priv->phy_num = 1;
2795 /* restart autonegotiation */
2796 tlan_set_timer(dev, msecs_to_jiffies(400),
2797 TLAN_TIMER_PHY_PDOWN);
2798 return;
2799 }
2800 }
2801 }
2802
2803 /* Link restablished? */
2804 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2805 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2806 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2807 dev->name);
2808 netif_carrier_on(dev);
2809 }
2810 priv->media_timer.expires = jiffies + HZ;
2811 add_timer(&priv->media_timer);
2812 }
2813
2814
2815 /*****************************************************************************
2816 ******************************************************************************
2817
2818 ThunderLAN driver MII routines
2819
2820 these routines are based on the information in chap. 2 of the
2821 "ThunderLAN Programmer's Guide", pp. 15-24.
2822
2823 ******************************************************************************
2824 *****************************************************************************/
2825
2826
2827 /***************************************************************
2828 * tlan_mii_read_reg
2829 *
2830 * Returns:
2831 * false if ack received ok
2832 * true if no ack received or other error
2833 *
2834 * Parms:
2835 * dev The device structure containing
2836 * The io address and interrupt count
2837 * for this device.
2838 * phy The address of the PHY to be queried.
2839 * reg The register whose contents are to be
2840 * retrieved.
2841 * val A pointer to a variable to store the
2842 * retrieved value.
2843 *
2844 * This function uses the TLAN's MII bus to retrieve the contents
2845 * of a given register on a PHY. It sends the appropriate info
2846 * and then reads the 16-bit register value from the MII bus via
2847 * the TLAN SIO register.
2848 *
2849 **************************************************************/
2850
2851 static bool
2852 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2853 {
2854 u8 nack;
2855 u16 sio, tmp;
2856 u32 i;
2857 bool err;
2858 int minten;
2859 struct tlan_priv *priv = netdev_priv(dev);
2860 unsigned long flags = 0;
2861
2862 err = false;
2863 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2864 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2865
2866 if (!in_irq())
2867 spin_lock_irqsave(&priv->lock, flags);
2868
2869 tlan_mii_sync(dev->base_addr);
2870
2871 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2872 if (minten)
2873 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2874
2875 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2876 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2877 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2878 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2879
2880
2881 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2882
2883 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2884 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2885 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2886
2887 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2888 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2889 if (nack) { /* no ACK, so fake it */
2890 for (i = 0; i < 16; i++) {
2891 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2892 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2893 }
2894 tmp = 0xffff;
2895 err = true;
2896 } else { /* ACK, so read data */
2897 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2898 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2899 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2900 tmp |= i;
2901 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2902 }
2903 }
2904
2905
2906 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2907 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2908
2909 if (minten)
2910 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2911
2912 *val = tmp;
2913
2914 if (!in_irq())
2915 spin_unlock_irqrestore(&priv->lock, flags);
2916
2917 return err;
2918
2919 }
2920
2921
2922
2923
2924 /***************************************************************
2925 * tlan_mii_send_data
2926 *
2927 * Returns:
2928 * Nothing
2929 * Parms:
2930 * base_port The base IO port of the adapter in
2931 * question.
2932 * dev The address of the PHY to be queried.
2933 * data The value to be placed on the MII bus.
2934 * num_bits The number of bits in data that are to
2935 * be placed on the MII bus.
2936 *
2937 * This function sends on sequence of bits on the MII
2938 * configuration bus.
2939 *
2940 **************************************************************/
2941
2942 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2943 {
2944 u16 sio;
2945 u32 i;
2946
2947 if (num_bits == 0)
2948 return;
2949
2950 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2951 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2952 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2953
2954 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2955 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2956 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2957 if (data & i)
2958 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2959 else
2960 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2961 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2962 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2963 }
2964
2965 }
2966
2967
2968
2969
2970 /***************************************************************
2971 * TLan_MiiSync
2972 *
2973 * Returns:
2974 * Nothing
2975 * Parms:
2976 * base_port The base IO port of the adapter in
2977 * question.
2978 *
2979 * This functions syncs all PHYs in terms of the MII configuration
2980 * bus.
2981 *
2982 **************************************************************/
2983
2984 static void tlan_mii_sync(u16 base_port)
2985 {
2986 int i;
2987 u16 sio;
2988
2989 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2990 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2991
2992 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2993 for (i = 0; i < 32; i++) {
2994 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2995 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2996 }
2997
2998 }
2999
3000
3001
3002
3003 /***************************************************************
3004 * tlan_mii_write_reg
3005 *
3006 * Returns:
3007 * Nothing
3008 * Parms:
3009 * dev The device structure for the device
3010 * to write to.
3011 * phy The address of the PHY to be written to.
3012 * reg The register whose contents are to be
3013 * written.
3014 * val The value to be written to the register.
3015 *
3016 * This function uses the TLAN's MII bus to write the contents of a
3017 * given register on a PHY. It sends the appropriate info and then
3018 * writes the 16-bit register value from the MII configuration bus
3019 * via the TLAN SIO register.
3020 *
3021 **************************************************************/
3022
3023 static void
3024 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3025 {
3026 u16 sio;
3027 int minten;
3028 unsigned long flags = 0;
3029 struct tlan_priv *priv = netdev_priv(dev);
3030
3031 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3032 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3033
3034 if (!in_irq())
3035 spin_lock_irqsave(&priv->lock, flags);
3036
3037 tlan_mii_sync(dev->base_addr);
3038
3039 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3040 if (minten)
3041 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3042
3043 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3044 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3045 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3046 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3047
3048 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3049 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3050
3051 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3052 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3053
3054 if (minten)
3055 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3056
3057 if (!in_irq())
3058 spin_unlock_irqrestore(&priv->lock, flags);
3059
3060 }
3061
3062
3063
3064
3065 /*****************************************************************************
3066 ******************************************************************************
3067
3068 ThunderLAN driver eeprom routines
3069
3070 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3071 EEPROM. these functions are based on information in microchip's
3072 data sheet. I don't know how well this functions will work with
3073 other Eeproms.
3074
3075 ******************************************************************************
3076 *****************************************************************************/
3077
3078
3079 /***************************************************************
3080 * tlan_ee_send_start
3081 *
3082 * Returns:
3083 * Nothing
3084 * Parms:
3085 * io_base The IO port base address for the
3086 * TLAN device with the EEPROM to
3087 * use.
3088 *
3089 * This function sends a start cycle to an EEPROM attached
3090 * to a TLAN chip.
3091 *
3092 **************************************************************/
3093
3094 static void tlan_ee_send_start(u16 io_base)
3095 {
3096 u16 sio;
3097
3098 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3099 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3100
3101 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3102 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3103 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3104 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3105 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3106
3107 }
3108
3109
3110
3111
3112 /***************************************************************
3113 * tlan_ee_send_byte
3114 *
3115 * Returns:
3116 * If the correct ack was received, 0, otherwise 1
3117 * Parms: io_base The IO port base address for the
3118 * TLAN device with the EEPROM to
3119 * use.
3120 * data The 8 bits of information to
3121 * send to the EEPROM.
3122 * stop If TLAN_EEPROM_STOP is passed, a
3123 * stop cycle is sent after the
3124 * byte is sent after the ack is
3125 * read.
3126 *
3127 * This function sends a byte on the serial EEPROM line,
3128 * driving the clock to send each bit. The function then
3129 * reverses transmission direction and reads an acknowledge
3130 * bit.
3131 *
3132 **************************************************************/
3133
3134 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3135 {
3136 int err;
3137 u8 place;
3138 u16 sio;
3139
3140 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3141 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3142
3143 /* Assume clock is low, tx is enabled; */
3144 for (place = 0x80; place != 0; place >>= 1) {
3145 if (place & data)
3146 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3147 else
3148 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3149 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3150 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3151 }
3152 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3153 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3154 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3155 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3156 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3157
3158 if ((!err) && stop) {
3159 /* STOP, raise data while clock is high */
3160 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3161 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3162 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3163 }
3164
3165 return err;
3166
3167 }
3168
3169
3170
3171
3172 /***************************************************************
3173 * tlan_ee_receive_byte
3174 *
3175 * Returns:
3176 * Nothing
3177 * Parms:
3178 * io_base The IO port base address for the
3179 * TLAN device with the EEPROM to
3180 * use.
3181 * data An address to a char to hold the
3182 * data sent from the EEPROM.
3183 * stop If TLAN_EEPROM_STOP is passed, a
3184 * stop cycle is sent after the
3185 * byte is received, and no ack is
3186 * sent.
3187 *
3188 * This function receives 8 bits of data from the EEPROM
3189 * over the serial link. It then sends and ack bit, or no
3190 * ack and a stop bit. This function is used to retrieve
3191 * data after the address of a byte in the EEPROM has been
3192 * sent.
3193 *
3194 **************************************************************/
3195
3196 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3197 {
3198 u8 place;
3199 u16 sio;
3200
3201 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3202 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3203 *data = 0;
3204
3205 /* Assume clock is low, tx is enabled; */
3206 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3207 for (place = 0x80; place; place >>= 1) {
3208 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3209 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3210 *data |= place;
3211 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3212 }
3213
3214 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3215 if (!stop) {
3216 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3217 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3218 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3219 } else {
3220 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3221 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3222 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3223 /* STOP, raise data while clock is high */
3224 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3225 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3226 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3227 }
3228
3229 }
3230
3231
3232
3233
3234 /***************************************************************
3235 * tlan_ee_read_byte
3236 *
3237 * Returns:
3238 * No error = 0, else, the stage at which the error
3239 * occurred.
3240 * Parms:
3241 * io_base The IO port base address for the
3242 * TLAN device with the EEPROM to
3243 * use.
3244 * ee_addr The address of the byte in the
3245 * EEPROM whose contents are to be
3246 * retrieved.
3247 * data An address to a char to hold the
3248 * data obtained from the EEPROM.
3249 *
3250 * This function reads a byte of information from an byte
3251 * cell in the EEPROM.
3252 *
3253 **************************************************************/
3254
3255 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3256 {
3257 int err;
3258 struct tlan_priv *priv = netdev_priv(dev);
3259 unsigned long flags = 0;
3260 int ret = 0;
3261
3262 spin_lock_irqsave(&priv->lock, flags);
3263
3264 tlan_ee_send_start(dev->base_addr);
3265 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3266 if (err) {
3267 ret = 1;
3268 goto fail;
3269 }
3270 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3271 if (err) {
3272 ret = 2;
3273 goto fail;
3274 }
3275 tlan_ee_send_start(dev->base_addr);
3276 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3277 if (err) {
3278 ret = 3;
3279 goto fail;
3280 }
3281 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3282 fail:
3283 spin_unlock_irqrestore(&priv->lock, flags);
3284
3285 return ret;
3286
3287 }
3288
3289
3290
Linux with added FPC-III support