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Merge tag 'regmap-fix-v4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / net / ethernet / ti / tlan.c
blob6c7ec1ddd475afd2e30254b3b159166b01f8eb0e
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_change_mtu = eth_change_mtu,
776 .ndo_set_mac_address = eth_mac_addr,
777 .ndo_validate_addr = eth_validate_addr,
778 #ifdef CONFIG_NET_POLL_CONTROLLER
779 .ndo_poll_controller = tlan_poll,
780 #endif
781 };
782
783 static void tlan_get_drvinfo(struct net_device *dev,
784 struct ethtool_drvinfo *info)
785 {
786 struct tlan_priv *priv = netdev_priv(dev);
787
788 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
789 if (priv->pci_dev)
790 strlcpy(info->bus_info, pci_name(priv->pci_dev),
791 sizeof(info->bus_info));
792 else
793 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
794 }
795
796 static int tlan_get_eeprom_len(struct net_device *dev)
797 {
798 return TLAN_EEPROM_SIZE;
799 }
800
801 static int tlan_get_eeprom(struct net_device *dev,
802 struct ethtool_eeprom *eeprom, u8 *data)
803 {
804 int i;
805
806 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
807 if (tlan_ee_read_byte(dev, i, &data[i]))
808 return -EIO;
809
810 return 0;
811 }
812
813 static const struct ethtool_ops tlan_ethtool_ops = {
814 .get_drvinfo = tlan_get_drvinfo,
815 .get_link = ethtool_op_get_link,
816 .get_eeprom_len = tlan_get_eeprom_len,
817 .get_eeprom = tlan_get_eeprom,
818 };
819
820 /***************************************************************
821 * tlan_init
822 *
823 * Returns:
824 * 0 on success, error code otherwise.
825 * Parms:
826 * dev The structure of the device to be
827 * init'ed.
828 *
829 * This function completes the initialization of the
830 * device structure and driver. It reserves the IO
831 * addresses, allocates memory for the lists and bounce
832 * buffers, retrieves the MAC address from the eeprom
833 * and assignes the device's methods.
834 *
835 **************************************************************/
836
837 static int tlan_init(struct net_device *dev)
838 {
839 int dma_size;
840 int err;
841 int i;
842 struct tlan_priv *priv;
843
844 priv = netdev_priv(dev);
845
846 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
847 * (sizeof(struct tlan_list));
848 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
849 dma_size,
850 &priv->dma_storage_dma);
851 priv->dma_size = dma_size;
852
853 if (priv->dma_storage == NULL) {
854 pr_err("Could not allocate lists and buffers for %s\n",
855 dev->name);
856 return -ENOMEM;
857 }
858 memset(priv->dma_storage, 0, dma_size);
859 priv->rx_list = (struct tlan_list *)
860 ALIGN((unsigned long)priv->dma_storage, 8);
861 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
862 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
863 priv->tx_list_dma =
864 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
865
866 err = 0;
867 for (i = 0; i < ETH_ALEN; i++)
868 err |= tlan_ee_read_byte(dev,
869 (u8) priv->adapter->addr_ofs + i,
870 (u8 *) &dev->dev_addr[i]);
871 if (err) {
872 pr_err("%s: Error reading MAC from eeprom: %d\n",
873 dev->name, err);
874 }
875 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
876 if (priv->adapter->addr_ofs == 0xf8) {
877 for (i = 0; i < ETH_ALEN; i += 2) {
878 char tmp = dev->dev_addr[i];
879 dev->dev_addr[i] = dev->dev_addr[i + 1];
880 dev->dev_addr[i + 1] = tmp;
881 }
882 }
883
884 netif_carrier_off(dev);
885
886 /* Device methods */
887 dev->netdev_ops = &tlan_netdev_ops;
888 dev->ethtool_ops = &tlan_ethtool_ops;
889 dev->watchdog_timeo = TX_TIMEOUT;
890
891 return 0;
892
893 }
894
895
896
897
898 /***************************************************************
899 * tlan_open
900 *
901 * Returns:
902 * 0 on success, error code otherwise.
903 * Parms:
904 * dev Structure of device to be opened.
905 *
906 * This routine puts the driver and TLAN adapter in a
907 * state where it is ready to send and receive packets.
908 * It allocates the IRQ, resets and brings the adapter
909 * out of reset, and allows interrupts. It also delays
910 * the startup for autonegotiation or sends a Rx GO
911 * command to the adapter, as appropriate.
912 *
913 **************************************************************/
914
915 static int tlan_open(struct net_device *dev)
916 {
917 struct tlan_priv *priv = netdev_priv(dev);
918 int err;
919
920 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
921 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
922 dev->name, dev);
923
924 if (err) {
925 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
926 dev->irq);
927 return err;
928 }
929
930 init_timer(&priv->timer);
931 init_timer(&priv->media_timer);
932
933 tlan_start(dev);
934
935 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
936 dev->name, priv->tlan_rev);
937
938 return 0;
939
940 }
941
942
943
944 /**************************************************************
945 * tlan_ioctl
946 *
947 * Returns:
948 * 0 on success, error code otherwise
949 * Params:
950 * dev structure of device to receive ioctl.
951 *
952 * rq ifreq structure to hold userspace data.
953 *
954 * cmd ioctl command.
955 *
956 *
957 *************************************************************/
958
959 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
960 {
961 struct tlan_priv *priv = netdev_priv(dev);
962 struct mii_ioctl_data *data = if_mii(rq);
963 u32 phy = priv->phy[priv->phy_num];
964
965 if (!priv->phy_online)
966 return -EAGAIN;
967
968 switch (cmd) {
969 case SIOCGMIIPHY: /* get address of MII PHY in use. */
970 data->phy_id = phy;
971
972
973 case SIOCGMIIREG: /* read MII PHY register. */
974 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
975 data->reg_num & 0x1f, &data->val_out);
976 return 0;
977
978
979 case SIOCSMIIREG: /* write MII PHY register. */
980 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
981 data->reg_num & 0x1f, data->val_in);
982 return 0;
983 default:
984 return -EOPNOTSUPP;
985 }
986 }
987
988
989 /***************************************************************
990 * tlan_tx_timeout
991 *
992 * Returns: nothing
993 *
994 * Params:
995 * dev structure of device which timed out
996 * during transmit.
997 *
998 **************************************************************/
999
1000 static void tlan_tx_timeout(struct net_device *dev)
1001 {
1002
1003 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1004
1005 /* Ok so we timed out, lets see what we can do about it...*/
1006 tlan_free_lists(dev);
1007 tlan_reset_lists(dev);
1008 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1009 tlan_reset_adapter(dev);
1010 netif_trans_update(dev); /* prevent tx timeout */
1011 netif_wake_queue(dev);
1012
1013 }
1014
1015
1016 /***************************************************************
1017 * tlan_tx_timeout_work
1018 *
1019 * Returns: nothing
1020 *
1021 * Params:
1022 * work work item of device which timed out
1023 *
1024 **************************************************************/
1025
1026 static void tlan_tx_timeout_work(struct work_struct *work)
1027 {
1028 struct tlan_priv *priv =
1029 container_of(work, struct tlan_priv, tlan_tqueue);
1030
1031 tlan_tx_timeout(priv->dev);
1032 }
1033
1034
1035
1036 /***************************************************************
1037 * tlan_start_tx
1038 *
1039 * Returns:
1040 * 0 on success, non-zero on failure.
1041 * Parms:
1042 * skb A pointer to the sk_buff containing the
1043 * frame to be sent.
1044 * dev The device to send the data on.
1045 *
1046 * This function adds a frame to the Tx list to be sent
1047 * ASAP. First it verifies that the adapter is ready and
1048 * there is room in the queue. Then it sets up the next
1049 * available list, copies the frame to the corresponding
1050 * buffer. If the adapter Tx channel is idle, it gives
1051 * the adapter a Tx Go command on the list, otherwise it
1052 * sets the forward address of the previous list to point
1053 * to this one. Then it frees the sk_buff.
1054 *
1055 **************************************************************/
1056
1057 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1058 {
1059 struct tlan_priv *priv = netdev_priv(dev);
1060 dma_addr_t tail_list_phys;
1061 struct tlan_list *tail_list;
1062 unsigned long flags;
1063 unsigned int txlen;
1064
1065 if (!priv->phy_online) {
1066 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1067 dev->name);
1068 dev_kfree_skb_any(skb);
1069 return NETDEV_TX_OK;
1070 }
1071
1072 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1073 return NETDEV_TX_OK;
1074 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1075
1076 tail_list = priv->tx_list + priv->tx_tail;
1077 tail_list_phys =
1078 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1079
1080 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1081 TLAN_DBG(TLAN_DEBUG_TX,
1082 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1083 dev->name, priv->tx_head, priv->tx_tail);
1084 netif_stop_queue(dev);
1085 priv->tx_busy_count++;
1086 return NETDEV_TX_BUSY;
1087 }
1088
1089 tail_list->forward = 0;
1090
1091 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1092 skb->data, txlen,
1093 PCI_DMA_TODEVICE);
1094 tlan_store_skb(tail_list, skb);
1095
1096 tail_list->frame_size = (u16) txlen;
1097 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1098 tail_list->buffer[1].count = 0;
1099 tail_list->buffer[1].address = 0;
1100
1101 spin_lock_irqsave(&priv->lock, flags);
1102 tail_list->c_stat = TLAN_CSTAT_READY;
1103 if (!priv->tx_in_progress) {
1104 priv->tx_in_progress = 1;
1105 TLAN_DBG(TLAN_DEBUG_TX,
1106 "TRANSMIT: Starting TX on buffer %d\n",
1107 priv->tx_tail);
1108 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1109 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1110 } else {
1111 TLAN_DBG(TLAN_DEBUG_TX,
1112 "TRANSMIT: Adding buffer %d to TX channel\n",
1113 priv->tx_tail);
1114 if (priv->tx_tail == 0) {
1115 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1116 = tail_list_phys;
1117 } else {
1118 (priv->tx_list + (priv->tx_tail - 1))->forward
1119 = tail_list_phys;
1120 }
1121 }
1122 spin_unlock_irqrestore(&priv->lock, flags);
1123
1124 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1125
1126 return NETDEV_TX_OK;
1127
1128 }
1129
1130
1131
1132
1133 /***************************************************************
1134 * tlan_handle_interrupt
1135 *
1136 * Returns:
1137 * Nothing
1138 * Parms:
1139 * irq The line on which the interrupt
1140 * occurred.
1141 * dev_id A pointer to the device assigned to
1142 * this irq line.
1143 *
1144 * This function handles an interrupt generated by its
1145 * assigned TLAN adapter. The function deactivates
1146 * interrupts on its adapter, records the type of
1147 * interrupt, executes the appropriate subhandler, and
1148 * acknowdges the interrupt to the adapter (thus
1149 * re-enabling adapter interrupts.
1150 *
1151 **************************************************************/
1152
1153 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1154 {
1155 struct net_device *dev = dev_id;
1156 struct tlan_priv *priv = netdev_priv(dev);
1157 u16 host_int;
1158 u16 type;
1159
1160 spin_lock(&priv->lock);
1161
1162 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1163 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1164 if (type) {
1165 u32 ack;
1166 u32 host_cmd;
1167
1168 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1169 ack = tlan_int_vector[type](dev, host_int);
1170
1171 if (ack) {
1172 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1173 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1174 }
1175 }
1176
1177 spin_unlock(&priv->lock);
1178
1179 return IRQ_RETVAL(type);
1180 }
1181
1182
1183
1184
1185 /***************************************************************
1186 * tlan_close
1187 *
1188 * Returns:
1189 * An error code.
1190 * Parms:
1191 * dev The device structure of the device to
1192 * close.
1193 *
1194 * This function shuts down the adapter. It records any
1195 * stats, puts the adapter into reset state, deactivates
1196 * its time as needed, and frees the irq it is using.
1197 *
1198 **************************************************************/
1199
1200 static int tlan_close(struct net_device *dev)
1201 {
1202 tlan_stop(dev);
1203
1204 free_irq(dev->irq, dev);
1205 tlan_free_lists(dev);
1206 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1207
1208 return 0;
1209
1210 }
1211
1212
1213
1214
1215 /***************************************************************
1216 * tlan_get_stats
1217 *
1218 * Returns:
1219 * A pointer to the device's statistics structure.
1220 * Parms:
1221 * dev The device structure to return the
1222 * stats for.
1223 *
1224 * This function updates the devices statistics by reading
1225 * the TLAN chip's onboard registers. Then it returns the
1226 * address of the statistics structure.
1227 *
1228 **************************************************************/
1229
1230 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1231 {
1232 struct tlan_priv *priv = netdev_priv(dev);
1233 int i;
1234
1235 /* Should only read stats if open ? */
1236 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1237
1238 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1239 priv->rx_eoc_count);
1240 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1241 priv->tx_busy_count);
1242 if (debug & TLAN_DEBUG_GNRL) {
1243 tlan_print_dio(dev->base_addr);
1244 tlan_phy_print(dev);
1245 }
1246 if (debug & TLAN_DEBUG_LIST) {
1247 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1248 tlan_print_list(priv->rx_list + i, "RX", i);
1249 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1250 tlan_print_list(priv->tx_list + i, "TX", i);
1251 }
1252
1253 return &dev->stats;
1254
1255 }
1256
1257
1258
1259
1260 /***************************************************************
1261 * tlan_set_multicast_list
1262 *
1263 * Returns:
1264 * Nothing
1265 * Parms:
1266 * dev The device structure to set the
1267 * multicast list for.
1268 *
1269 * This function sets the TLAN adaptor to various receive
1270 * modes. If the IFF_PROMISC flag is set, promiscuous
1271 * mode is acitviated. Otherwise, promiscuous mode is
1272 * turned off. If the IFF_ALLMULTI flag is set, then
1273 * the hash table is set to receive all group addresses.
1274 * Otherwise, the first three multicast addresses are
1275 * stored in AREG_1-3, and the rest are selected via the
1276 * hash table, as necessary.
1277 *
1278 **************************************************************/
1279
1280 static void tlan_set_multicast_list(struct net_device *dev)
1281 {
1282 struct netdev_hw_addr *ha;
1283 u32 hash1 = 0;
1284 u32 hash2 = 0;
1285 int i;
1286 u32 offset;
1287 u8 tmp;
1288
1289 if (dev->flags & IFF_PROMISC) {
1290 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1291 tlan_dio_write8(dev->base_addr,
1292 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1293 } else {
1294 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1295 tlan_dio_write8(dev->base_addr,
1296 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1297 if (dev->flags & IFF_ALLMULTI) {
1298 for (i = 0; i < 3; i++)
1299 tlan_set_mac(dev, i + 1, NULL);
1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1301 0xffffffff);
1302 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1303 0xffffffff);
1304 } else {
1305 i = 0;
1306 netdev_for_each_mc_addr(ha, dev) {
1307 if (i < 3) {
1308 tlan_set_mac(dev, i + 1,
1309 (char *) &ha->addr);
1310 } else {
1311 offset =
1312 tlan_hash_func((u8 *)&ha->addr);
1313 if (offset < 32)
1314 hash1 |= (1 << offset);
1315 else
1316 hash2 |= (1 << (offset - 32));
1317 }
1318 i++;
1319 }
1320 for ( ; i < 3; i++)
1321 tlan_set_mac(dev, i + 1, NULL);
1322 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1323 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1324 }
1325 }
1326
1327 }
1328
1329
1330
1331 /*****************************************************************************
1332 ******************************************************************************
1333
1334 ThunderLAN driver interrupt vectors and table
1335
1336 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1337 Programmer's Guide" for more informations on handling interrupts
1338 generated by TLAN based adapters.
1339
1340 ******************************************************************************
1341 *****************************************************************************/
1342
1343
1344
1345
1346 /***************************************************************
1347 * tlan_handle_tx_eof
1348 *
1349 * Returns:
1350 * 1
1351 * Parms:
1352 * dev Device assigned the IRQ that was
1353 * raised.
1354 * host_int The contents of the HOST_INT
1355 * port.
1356 *
1357 * This function handles Tx EOF interrupts which are raised
1358 * by the adapter when it has completed sending the
1359 * contents of a buffer. If detemines which list/buffer
1360 * was completed and resets it. If the buffer was the last
1361 * in the channel (EOC), then the function checks to see if
1362 * another buffer is ready to send, and if so, sends a Tx
1363 * Go command. Finally, the driver activates/continues the
1364 * activity LED.
1365 *
1366 **************************************************************/
1367
1368 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1369 {
1370 struct tlan_priv *priv = netdev_priv(dev);
1371 int eoc = 0;
1372 struct tlan_list *head_list;
1373 dma_addr_t head_list_phys;
1374 u32 ack = 0;
1375 u16 tmp_c_stat;
1376
1377 TLAN_DBG(TLAN_DEBUG_TX,
1378 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1379 priv->tx_head, priv->tx_tail);
1380 head_list = priv->tx_list + priv->tx_head;
1381
1382 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1383 && (ack < 255)) {
1384 struct sk_buff *skb = tlan_get_skb(head_list);
1385
1386 ack++;
1387 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1388 max(skb->len,
1389 (unsigned int)TLAN_MIN_FRAME_SIZE),
1390 PCI_DMA_TODEVICE);
1391 dev_kfree_skb_any(skb);
1392 head_list->buffer[8].address = 0;
1393 head_list->buffer[9].address = 0;
1394
1395 if (tmp_c_stat & TLAN_CSTAT_EOC)
1396 eoc = 1;
1397
1398 dev->stats.tx_bytes += head_list->frame_size;
1399
1400 head_list->c_stat = TLAN_CSTAT_UNUSED;
1401 netif_start_queue(dev);
1402 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1403 head_list = priv->tx_list + priv->tx_head;
1404 }
1405
1406 if (!ack)
1407 netdev_info(dev,
1408 "Received interrupt for uncompleted TX frame\n");
1409
1410 if (eoc) {
1411 TLAN_DBG(TLAN_DEBUG_TX,
1412 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1413 priv->tx_head, priv->tx_tail);
1414 head_list = priv->tx_list + priv->tx_head;
1415 head_list_phys = priv->tx_list_dma
1416 + sizeof(struct tlan_list)*priv->tx_head;
1417 if ((head_list->c_stat & TLAN_CSTAT_READY)
1418 == TLAN_CSTAT_READY) {
1419 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1420 ack |= TLAN_HC_GO;
1421 } else {
1422 priv->tx_in_progress = 0;
1423 }
1424 }
1425
1426 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1427 tlan_dio_write8(dev->base_addr,
1428 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1429 if (priv->timer.function == NULL) {
1430 priv->timer.function = tlan_timer;
1431 priv->timer.data = (unsigned long) dev;
1432 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1433 priv->timer_set_at = jiffies;
1434 priv->timer_type = TLAN_TIMER_ACTIVITY;
1435 add_timer(&priv->timer);
1436 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1437 priv->timer_set_at = jiffies;
1438 }
1439 }
1440
1441 return ack;
1442
1443 }
1444
1445
1446
1447
1448 /***************************************************************
1449 * TLan_HandleStatOverflow
1450 *
1451 * Returns:
1452 * 1
1453 * Parms:
1454 * dev Device assigned the IRQ that was
1455 * raised.
1456 * host_int The contents of the HOST_INT
1457 * port.
1458 *
1459 * This function handles the Statistics Overflow interrupt
1460 * which means that one or more of the TLAN statistics
1461 * registers has reached 1/2 capacity and needs to be read.
1462 *
1463 **************************************************************/
1464
1465 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1466 {
1467 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1468
1469 return 1;
1470
1471 }
1472
1473
1474
1475
1476 /***************************************************************
1477 * TLan_HandleRxEOF
1478 *
1479 * Returns:
1480 * 1
1481 * Parms:
1482 * dev Device assigned the IRQ that was
1483 * raised.
1484 * host_int The contents of the HOST_INT
1485 * port.
1486 *
1487 * This function handles the Rx EOF interrupt which
1488 * indicates a frame has been received by the adapter from
1489 * the net and the frame has been transferred to memory.
1490 * The function determines the bounce buffer the frame has
1491 * been loaded into, creates a new sk_buff big enough to
1492 * hold the frame, and sends it to protocol stack. It
1493 * then resets the used buffer and appends it to the end
1494 * of the list. If the frame was the last in the Rx
1495 * channel (EOC), the function restarts the receive channel
1496 * by sending an Rx Go command to the adapter. Then it
1497 * activates/continues the activity LED.
1498 *
1499 **************************************************************/
1500
1501 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1502 {
1503 struct tlan_priv *priv = netdev_priv(dev);
1504 u32 ack = 0;
1505 int eoc = 0;
1506 struct tlan_list *head_list;
1507 struct sk_buff *skb;
1508 struct tlan_list *tail_list;
1509 u16 tmp_c_stat;
1510 dma_addr_t head_list_phys;
1511
1512 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1513 priv->rx_head, priv->rx_tail);
1514 head_list = priv->rx_list + priv->rx_head;
1515 head_list_phys =
1516 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1517
1518 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1519 && (ack < 255)) {
1520 dma_addr_t frame_dma = head_list->buffer[0].address;
1521 u32 frame_size = head_list->frame_size;
1522 struct sk_buff *new_skb;
1523
1524 ack++;
1525 if (tmp_c_stat & TLAN_CSTAT_EOC)
1526 eoc = 1;
1527
1528 new_skb = netdev_alloc_skb_ip_align(dev,
1529 TLAN_MAX_FRAME_SIZE + 5);
1530 if (!new_skb)
1531 goto drop_and_reuse;
1532
1533 skb = tlan_get_skb(head_list);
1534 pci_unmap_single(priv->pci_dev, frame_dma,
1535 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1536 skb_put(skb, frame_size);
1537
1538 dev->stats.rx_bytes += frame_size;
1539
1540 skb->protocol = eth_type_trans(skb, dev);
1541 netif_rx(skb);
1542
1543 head_list->buffer[0].address =
1544 pci_map_single(priv->pci_dev, new_skb->data,
1545 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1546
1547 tlan_store_skb(head_list, new_skb);
1548 drop_and_reuse:
1549 head_list->forward = 0;
1550 head_list->c_stat = 0;
1551 tail_list = priv->rx_list + priv->rx_tail;
1552 tail_list->forward = head_list_phys;
1553
1554 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1555 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1556 head_list = priv->rx_list + priv->rx_head;
1557 head_list_phys = priv->rx_list_dma
1558 + sizeof(struct tlan_list)*priv->rx_head;
1559 }
1560
1561 if (!ack)
1562 netdev_info(dev,
1563 "Received interrupt for uncompleted RX frame\n");
1564
1565
1566 if (eoc) {
1567 TLAN_DBG(TLAN_DEBUG_RX,
1568 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1569 priv->rx_head, priv->rx_tail);
1570 head_list = priv->rx_list + priv->rx_head;
1571 head_list_phys = priv->rx_list_dma
1572 + sizeof(struct tlan_list)*priv->rx_head;
1573 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1574 ack |= TLAN_HC_GO | TLAN_HC_RT;
1575 priv->rx_eoc_count++;
1576 }
1577
1578 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1579 tlan_dio_write8(dev->base_addr,
1580 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1581 if (priv->timer.function == NULL) {
1582 priv->timer.function = tlan_timer;
1583 priv->timer.data = (unsigned long) dev;
1584 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1585 priv->timer_set_at = jiffies;
1586 priv->timer_type = TLAN_TIMER_ACTIVITY;
1587 add_timer(&priv->timer);
1588 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1589 priv->timer_set_at = jiffies;
1590 }
1591 }
1592
1593 return ack;
1594
1595 }
1596
1597
1598
1599
1600 /***************************************************************
1601 * tlan_handle_dummy
1602 *
1603 * Returns:
1604 * 1
1605 * Parms:
1606 * dev Device assigned the IRQ that was
1607 * raised.
1608 * host_int The contents of the HOST_INT
1609 * port.
1610 *
1611 * This function handles the Dummy interrupt, which is
1612 * raised whenever a test interrupt is generated by setting
1613 * the Req_Int bit of HOST_CMD to 1.
1614 *
1615 **************************************************************/
1616
1617 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1618 {
1619 netdev_info(dev, "Test interrupt\n");
1620 return 1;
1621
1622 }
1623
1624
1625
1626
1627 /***************************************************************
1628 * tlan_handle_tx_eoc
1629 *
1630 * Returns:
1631 * 1
1632 * Parms:
1633 * dev Device assigned the IRQ that was
1634 * raised.
1635 * host_int The contents of the HOST_INT
1636 * port.
1637 *
1638 * This driver is structured to determine EOC occurrences by
1639 * reading the CSTAT member of the list structure. Tx EOC
1640 * interrupts are disabled via the DIO INTDIS register.
1641 * However, TLAN chips before revision 3.0 didn't have this
1642 * functionality, so process EOC events if this is the
1643 * case.
1644 *
1645 **************************************************************/
1646
1647 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1648 {
1649 struct tlan_priv *priv = netdev_priv(dev);
1650 struct tlan_list *head_list;
1651 dma_addr_t head_list_phys;
1652 u32 ack = 1;
1653
1654 if (priv->tlan_rev < 0x30) {
1655 TLAN_DBG(TLAN_DEBUG_TX,
1656 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1657 priv->tx_head, priv->tx_tail);
1658 head_list = priv->tx_list + priv->tx_head;
1659 head_list_phys = priv->tx_list_dma
1660 + sizeof(struct tlan_list)*priv->tx_head;
1661 if ((head_list->c_stat & TLAN_CSTAT_READY)
1662 == TLAN_CSTAT_READY) {
1663 netif_stop_queue(dev);
1664 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1665 ack |= TLAN_HC_GO;
1666 } else {
1667 priv->tx_in_progress = 0;
1668 }
1669 }
1670
1671 return ack;
1672
1673 }
1674
1675
1676
1677
1678 /***************************************************************
1679 * tlan_handle_status_check
1680 *
1681 * Returns:
1682 * 0 if Adapter check, 1 if Network Status check.
1683 * Parms:
1684 * dev Device assigned the IRQ that was
1685 * raised.
1686 * host_int The contents of the HOST_INT
1687 * port.
1688 *
1689 * This function handles Adapter Check/Network Status
1690 * interrupts generated by the adapter. It checks the
1691 * vector in the HOST_INT register to determine if it is
1692 * an Adapter Check interrupt. If so, it resets the
1693 * adapter. Otherwise it clears the status registers
1694 * and services the PHY.
1695 *
1696 **************************************************************/
1697
1698 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1699 {
1700 struct tlan_priv *priv = netdev_priv(dev);
1701 u32 ack;
1702 u32 error;
1703 u8 net_sts;
1704 u32 phy;
1705 u16 tlphy_ctl;
1706 u16 tlphy_sts;
1707
1708 ack = 1;
1709 if (host_int & TLAN_HI_IV_MASK) {
1710 netif_stop_queue(dev);
1711 error = inl(dev->base_addr + TLAN_CH_PARM);
1712 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1713 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1714 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1715
1716 schedule_work(&priv->tlan_tqueue);
1717
1718 netif_wake_queue(dev);
1719 ack = 0;
1720 } else {
1721 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1722 phy = priv->phy[priv->phy_num];
1723
1724 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1725 if (net_sts) {
1726 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1727 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1728 dev->name, (unsigned) net_sts);
1729 }
1730 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1731 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1732 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1733 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1734 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1735 tlphy_ctl |= TLAN_TC_SWAPOL;
1736 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1737 tlphy_ctl);
1738 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1739 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1740 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1741 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1742 tlphy_ctl);
1743 }
1744
1745 if (debug)
1746 tlan_phy_print(dev);
1747 }
1748 }
1749
1750 return ack;
1751
1752 }
1753
1754
1755
1756
1757 /***************************************************************
1758 * tlan_handle_rx_eoc
1759 *
1760 * Returns:
1761 * 1
1762 * Parms:
1763 * dev Device assigned the IRQ that was
1764 * raised.
1765 * host_int The contents of the HOST_INT
1766 * port.
1767 *
1768 * This driver is structured to determine EOC occurrences by
1769 * reading the CSTAT member of the list structure. Rx EOC
1770 * interrupts are disabled via the DIO INTDIS register.
1771 * However, TLAN chips before revision 3.0 didn't have this
1772 * CSTAT member or a INTDIS register, so if this chip is
1773 * pre-3.0, process EOC interrupts normally.
1774 *
1775 **************************************************************/
1776
1777 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1778 {
1779 struct tlan_priv *priv = netdev_priv(dev);
1780 dma_addr_t head_list_phys;
1781 u32 ack = 1;
1782
1783 if (priv->tlan_rev < 0x30) {
1784 TLAN_DBG(TLAN_DEBUG_RX,
1785 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1786 priv->rx_head, priv->rx_tail);
1787 head_list_phys = priv->rx_list_dma
1788 + sizeof(struct tlan_list)*priv->rx_head;
1789 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1790 ack |= TLAN_HC_GO | TLAN_HC_RT;
1791 priv->rx_eoc_count++;
1792 }
1793
1794 return ack;
1795
1796 }
1797
1798
1799
1800
1801 /*****************************************************************************
1802 ******************************************************************************
1803
1804 ThunderLAN driver timer function
1805
1806 ******************************************************************************
1807 *****************************************************************************/
1808
1809
1810 /***************************************************************
1811 * tlan_timer
1812 *
1813 * Returns:
1814 * Nothing
1815 * Parms:
1816 * data A value given to add timer when
1817 * add_timer was called.
1818 *
1819 * This function handles timed functionality for the
1820 * TLAN driver. The two current timer uses are for
1821 * delaying for autonegotionation and driving the ACT LED.
1822 * - Autonegotiation requires being allowed about
1823 * 2 1/2 seconds before attempting to transmit a
1824 * packet. It would be a very bad thing to hang
1825 * the kernel this long, so the driver doesn't
1826 * allow transmission 'til after this time, for
1827 * certain PHYs. It would be much nicer if all
1828 * PHYs were interrupt-capable like the internal
1829 * PHY.
1830 * - The ACT LED, which shows adapter activity, is
1831 * driven by the driver, and so must be left on
1832 * for a short period to power up the LED so it
1833 * can be seen. This delay can be changed by
1834 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1835 * if desired. 100 ms produces a slightly
1836 * sluggish response.
1837 *
1838 **************************************************************/
1839
1840 static void tlan_timer(unsigned long data)
1841 {
1842 struct net_device *dev = (struct net_device *) data;
1843 struct tlan_priv *priv = netdev_priv(dev);
1844 u32 elapsed;
1845 unsigned long flags = 0;
1846
1847 priv->timer.function = NULL;
1848
1849 switch (priv->timer_type) {
1850 case TLAN_TIMER_PHY_PDOWN:
1851 tlan_phy_power_down(dev);
1852 break;
1853 case TLAN_TIMER_PHY_PUP:
1854 tlan_phy_power_up(dev);
1855 break;
1856 case TLAN_TIMER_PHY_RESET:
1857 tlan_phy_reset(dev);
1858 break;
1859 case TLAN_TIMER_PHY_START_LINK:
1860 tlan_phy_start_link(dev);
1861 break;
1862 case TLAN_TIMER_PHY_FINISH_AN:
1863 tlan_phy_finish_auto_neg(dev);
1864 break;
1865 case TLAN_TIMER_FINISH_RESET:
1866 tlan_finish_reset(dev);
1867 break;
1868 case TLAN_TIMER_ACTIVITY:
1869 spin_lock_irqsave(&priv->lock, flags);
1870 if (priv->timer.function == NULL) {
1871 elapsed = jiffies - priv->timer_set_at;
1872 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1873 tlan_dio_write8(dev->base_addr,
1874 TLAN_LED_REG, TLAN_LED_LINK);
1875 } else {
1876 priv->timer.function = tlan_timer;
1877 priv->timer.expires = priv->timer_set_at
1878 + TLAN_TIMER_ACT_DELAY;
1879 spin_unlock_irqrestore(&priv->lock, flags);
1880 add_timer(&priv->timer);
1881 break;
1882 }
1883 }
1884 spin_unlock_irqrestore(&priv->lock, flags);
1885 break;
1886 default:
1887 break;
1888 }
1889
1890 }
1891
1892
1893 /*****************************************************************************
1894 ******************************************************************************
1895
1896 ThunderLAN driver adapter related routines
1897
1898 ******************************************************************************
1899 *****************************************************************************/
1900
1901
1902 /***************************************************************
1903 * tlan_reset_lists
1904 *
1905 * Returns:
1906 * Nothing
1907 * Parms:
1908 * dev The device structure with the list
1909 * stuctures to be reset.
1910 *
1911 * This routine sets the variables associated with managing
1912 * the TLAN lists to their initial values.
1913 *
1914 **************************************************************/
1915
1916 static void tlan_reset_lists(struct net_device *dev)
1917 {
1918 struct tlan_priv *priv = netdev_priv(dev);
1919 int i;
1920 struct tlan_list *list;
1921 dma_addr_t list_phys;
1922 struct sk_buff *skb;
1923
1924 priv->tx_head = 0;
1925 priv->tx_tail = 0;
1926 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1927 list = priv->tx_list + i;
1928 list->c_stat = TLAN_CSTAT_UNUSED;
1929 list->buffer[0].address = 0;
1930 list->buffer[2].count = 0;
1931 list->buffer[2].address = 0;
1932 list->buffer[8].address = 0;
1933 list->buffer[9].address = 0;
1934 }
1935
1936 priv->rx_head = 0;
1937 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1938 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1939 list = priv->rx_list + i;
1940 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1941 list->c_stat = TLAN_CSTAT_READY;
1942 list->frame_size = TLAN_MAX_FRAME_SIZE;
1943 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1944 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1945 if (!skb)
1946 break;
1947
1948 list->buffer[0].address = pci_map_single(priv->pci_dev,
1949 skb->data,
1950 TLAN_MAX_FRAME_SIZE,
1951 PCI_DMA_FROMDEVICE);
1952 tlan_store_skb(list, skb);
1953 list->buffer[1].count = 0;
1954 list->buffer[1].address = 0;
1955 list->forward = list_phys + sizeof(struct tlan_list);
1956 }
1957
1958 /* in case ran out of memory early, clear bits */
1959 while (i < TLAN_NUM_RX_LISTS) {
1960 tlan_store_skb(priv->rx_list + i, NULL);
1961 ++i;
1962 }
1963 list->forward = 0;
1964
1965 }
1966
1967
1968 static void tlan_free_lists(struct net_device *dev)
1969 {
1970 struct tlan_priv *priv = netdev_priv(dev);
1971 int i;
1972 struct tlan_list *list;
1973 struct sk_buff *skb;
1974
1975 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1976 list = priv->tx_list + i;
1977 skb = tlan_get_skb(list);
1978 if (skb) {
1979 pci_unmap_single(
1980 priv->pci_dev,
1981 list->buffer[0].address,
1982 max(skb->len,
1983 (unsigned int)TLAN_MIN_FRAME_SIZE),
1984 PCI_DMA_TODEVICE);
1985 dev_kfree_skb_any(skb);
1986 list->buffer[8].address = 0;
1987 list->buffer[9].address = 0;
1988 }
1989 }
1990
1991 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1992 list = priv->rx_list + i;
1993 skb = tlan_get_skb(list);
1994 if (skb) {
1995 pci_unmap_single(priv->pci_dev,
1996 list->buffer[0].address,
1997 TLAN_MAX_FRAME_SIZE,
1998 PCI_DMA_FROMDEVICE);
1999 dev_kfree_skb_any(skb);
2000 list->buffer[8].address = 0;
2001 list->buffer[9].address = 0;
2002 }
2003 }
2004 }
2005
2006
2007
2008
2009 /***************************************************************
2010 * tlan_print_dio
2011 *
2012 * Returns:
2013 * Nothing
2014 * Parms:
2015 * io_base Base IO port of the device of
2016 * which to print DIO registers.
2017 *
2018 * This function prints out all the internal (DIO)
2019 * registers of a TLAN chip.
2020 *
2021 **************************************************************/
2022
2023 static void tlan_print_dio(u16 io_base)
2024 {
2025 u32 data0, data1;
2026 int i;
2027
2028 pr_info("Contents of internal registers for io base 0x%04hx\n",
2029 io_base);
2030 pr_info("Off. +0 +4\n");
2031 for (i = 0; i < 0x4C; i += 8) {
2032 data0 = tlan_dio_read32(io_base, i);
2033 data1 = tlan_dio_read32(io_base, i + 0x4);
2034 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2035 }
2036
2037 }
2038
2039
2040
2041
2042 /***************************************************************
2043 * TLan_PrintList
2044 *
2045 * Returns:
2046 * Nothing
2047 * Parms:
2048 * list A pointer to the struct tlan_list structure to
2049 * be printed.
2050 * type A string to designate type of list,
2051 * "Rx" or "Tx".
2052 * num The index of the list.
2053 *
2054 * This function prints out the contents of the list
2055 * pointed to by the list parameter.
2056 *
2057 **************************************************************/
2058
2059 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2060 {
2061 int i;
2062
2063 pr_info("%s List %d at %p\n", type, num, list);
2064 pr_info(" Forward = 0x%08x\n", list->forward);
2065 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2066 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2067 /* for (i = 0; i < 10; i++) { */
2068 for (i = 0; i < 2; i++) {
2069 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2070 i, list->buffer[i].count, list->buffer[i].address);
2071 }
2072
2073 }
2074
2075
2076
2077
2078 /***************************************************************
2079 * tlan_read_and_clear_stats
2080 *
2081 * Returns:
2082 * Nothing
2083 * Parms:
2084 * dev Pointer to device structure of adapter
2085 * to which to read stats.
2086 * record Flag indicating whether to add
2087 *
2088 * This functions reads all the internal status registers
2089 * of the TLAN chip, which clears them as a side effect.
2090 * It then either adds the values to the device's status
2091 * struct, or discards them, depending on whether record
2092 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2093 *
2094 **************************************************************/
2095
2096 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2097 {
2098 u32 tx_good, tx_under;
2099 u32 rx_good, rx_over;
2100 u32 def_tx, crc, code;
2101 u32 multi_col, single_col;
2102 u32 excess_col, late_col, loss;
2103
2104 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2105 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2106 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2107 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2108 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2109
2110 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2111 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2112 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2113 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2114 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2115
2116 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2117 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2118 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2119 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2120 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2121
2122 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2123 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2124 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2125 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2126 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2127
2128 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2129 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2130 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2131 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2132
2133 if (record) {
2134 dev->stats.rx_packets += rx_good;
2135 dev->stats.rx_errors += rx_over + crc + code;
2136 dev->stats.tx_packets += tx_good;
2137 dev->stats.tx_errors += tx_under + loss;
2138 dev->stats.collisions += multi_col
2139 + single_col + excess_col + late_col;
2140
2141 dev->stats.rx_over_errors += rx_over;
2142 dev->stats.rx_crc_errors += crc;
2143 dev->stats.rx_frame_errors += code;
2144
2145 dev->stats.tx_aborted_errors += tx_under;
2146 dev->stats.tx_carrier_errors += loss;
2147 }
2148
2149 }
2150
2151
2152
2153
2154 /***************************************************************
2155 * TLan_Reset
2156 *
2157 * Returns:
2158 * 0
2159 * Parms:
2160 * dev Pointer to device structure of adapter
2161 * to be reset.
2162 *
2163 * This function resets the adapter and it's physical
2164 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2165 * Programmer's Guide" for details. The routine tries to
2166 * implement what is detailed there, though adjustments
2167 * have been made.
2168 *
2169 **************************************************************/
2170
2171 static void
2172 tlan_reset_adapter(struct net_device *dev)
2173 {
2174 struct tlan_priv *priv = netdev_priv(dev);
2175 int i;
2176 u32 addr;
2177 u32 data;
2178 u8 data8;
2179
2180 priv->tlan_full_duplex = false;
2181 priv->phy_online = 0;
2182 netif_carrier_off(dev);
2183
2184 /* 1. Assert reset bit. */
2185
2186 data = inl(dev->base_addr + TLAN_HOST_CMD);
2187 data |= TLAN_HC_AD_RST;
2188 outl(data, dev->base_addr + TLAN_HOST_CMD);
2189
2190 udelay(1000);
2191
2192 /* 2. Turn off interrupts. (Probably isn't necessary) */
2193
2194 data = inl(dev->base_addr + TLAN_HOST_CMD);
2195 data |= TLAN_HC_INT_OFF;
2196 outl(data, dev->base_addr + TLAN_HOST_CMD);
2197
2198 /* 3. Clear AREGs and HASHs. */
2199
2200 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2201 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2202
2203 /* 4. Setup NetConfig register. */
2204
2205 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2206 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2207
2208 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2209
2210 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2211 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2212
2213 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2214
2215 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2216 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2217 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2218
2219 /* 7. Setup the remaining registers. */
2220
2221 if (priv->tlan_rev >= 0x30) {
2222 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2223 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2224 }
2225 tlan_phy_detect(dev);
2226 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2227
2228 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2229 data |= TLAN_NET_CFG_BIT;
2230 if (priv->aui == 1) {
2231 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2232 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2233 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2234 priv->tlan_full_duplex = true;
2235 } else {
2236 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2237 }
2238 }
2239
2240 /* don't power down internal PHY if we're going to use it */
2241 if (priv->phy_num == 0 ||
2242 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2243 data |= TLAN_NET_CFG_PHY_EN;
2244 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2245
2246 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2247 tlan_finish_reset(dev);
2248 else
2249 tlan_phy_power_down(dev);
2250
2251 }
2252
2253
2254
2255
2256 static void
2257 tlan_finish_reset(struct net_device *dev)
2258 {
2259 struct tlan_priv *priv = netdev_priv(dev);
2260 u8 data;
2261 u32 phy;
2262 u8 sio;
2263 u16 status;
2264 u16 partner;
2265 u16 tlphy_ctl;
2266 u16 tlphy_par;
2267 u16 tlphy_id1, tlphy_id2;
2268 int i;
2269
2270 phy = priv->phy[priv->phy_num];
2271
2272 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2273 if (priv->tlan_full_duplex)
2274 data |= TLAN_NET_CMD_DUPLEX;
2275 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2276 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2277 if (priv->phy_num == 0)
2278 data |= TLAN_NET_MASK_MASK7;
2279 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2280 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2281 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2282 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2283
2284 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2285 (priv->aui)) {
2286 status = MII_GS_LINK;
2287 netdev_info(dev, "Link forced\n");
2288 } else {
2289 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2290 udelay(1000);
2291 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2292 if (status & MII_GS_LINK) {
2293 /* We only support link info on Nat.Sem. PHY's */
2294 if ((tlphy_id1 == NAT_SEM_ID1) &&
2295 (tlphy_id2 == NAT_SEM_ID2)) {
2296 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2297 &partner);
2298 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2299 &tlphy_par);
2300
2301 netdev_info(dev,
2302 "Link active, %s %uMbps %s-Duplex\n",
2303 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2304 ? "forced" : "Autonegotiation enabled,",
2305 tlphy_par & TLAN_PHY_SPEED_100
2306 ? 100 : 10,
2307 tlphy_par & TLAN_PHY_DUPLEX_FULL
2308 ? "Full" : "Half");
2309
2310 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2311 netdev_info(dev, "Partner capability:");
2312 for (i = 5; i < 10; i++)
2313 if (partner & (1 << i))
2314 pr_cont(" %s",
2315 media[i-5]);
2316 pr_cont("\n");
2317 }
2318 } else
2319 netdev_info(dev, "Link active\n");
2320 /* Enabling link beat monitoring */
2321 priv->media_timer.function = tlan_phy_monitor;
2322 priv->media_timer.data = (unsigned long) dev;
2323 priv->media_timer.expires = jiffies + HZ;
2324 add_timer(&priv->media_timer);
2325 }
2326 }
2327
2328 if (priv->phy_num == 0) {
2329 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2330 tlphy_ctl |= TLAN_TC_INTEN;
2331 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2332 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2333 sio |= TLAN_NET_SIO_MINTEN;
2334 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2335 }
2336
2337 if (status & MII_GS_LINK) {
2338 tlan_set_mac(dev, 0, dev->dev_addr);
2339 priv->phy_online = 1;
2340 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2341 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2342 outb((TLAN_HC_REQ_INT >> 8),
2343 dev->base_addr + TLAN_HOST_CMD + 1);
2344 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2345 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2346 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2347 netif_carrier_on(dev);
2348 } else {
2349 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2350 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2351 return;
2352 }
2353 tlan_set_multicast_list(dev);
2354
2355 }
2356
2357
2358
2359
2360 /***************************************************************
2361 * tlan_set_mac
2362 *
2363 * Returns:
2364 * Nothing
2365 * Parms:
2366 * dev Pointer to device structure of adapter
2367 * on which to change the AREG.
2368 * areg The AREG to set the address in (0 - 3).
2369 * mac A pointer to an array of chars. Each
2370 * element stores one byte of the address.
2371 * IE, it isn't in ascii.
2372 *
2373 * This function transfers a MAC address to one of the
2374 * TLAN AREGs (address registers). The TLAN chip locks
2375 * the register on writing to offset 0 and unlocks the
2376 * register after writing to offset 5. If NULL is passed
2377 * in mac, then the AREG is filled with 0's.
2378 *
2379 **************************************************************/
2380
2381 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2382 {
2383 int i;
2384
2385 areg *= 6;
2386
2387 if (mac != NULL) {
2388 for (i = 0; i < 6; i++)
2389 tlan_dio_write8(dev->base_addr,
2390 TLAN_AREG_0 + areg + i, mac[i]);
2391 } else {
2392 for (i = 0; i < 6; i++)
2393 tlan_dio_write8(dev->base_addr,
2394 TLAN_AREG_0 + areg + i, 0);
2395 }
2396
2397 }
2398
2399
2400
2401
2402 /*****************************************************************************
2403 ******************************************************************************
2404
2405 ThunderLAN driver PHY layer routines
2406
2407 ******************************************************************************
2408 *****************************************************************************/
2409
2410
2411
2412 /*********************************************************************
2413 * tlan_phy_print
2414 *
2415 * Returns:
2416 * Nothing
2417 * Parms:
2418 * dev A pointer to the device structure of the
2419 * TLAN device having the PHYs to be detailed.
2420 *
2421 * This function prints the registers a PHY (aka transceiver).
2422 *
2423 ********************************************************************/
2424
2425 static void tlan_phy_print(struct net_device *dev)
2426 {
2427 struct tlan_priv *priv = netdev_priv(dev);
2428 u16 i, data0, data1, data2, data3, phy;
2429
2430 phy = priv->phy[priv->phy_num];
2431
2432 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2433 netdev_info(dev, "Unmanaged PHY\n");
2434 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2435 netdev_info(dev, "PHY 0x%02x\n", phy);
2436 pr_info(" Off. +0 +1 +2 +3\n");
2437 for (i = 0; i < 0x20; i += 4) {
2438 tlan_mii_read_reg(dev, phy, i, &data0);
2439 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2440 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2441 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2442 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2443 i, data0, data1, data2, data3);
2444 }
2445 } else {
2446 netdev_info(dev, "Invalid PHY\n");
2447 }
2448
2449 }
2450
2451
2452
2453
2454 /*********************************************************************
2455 * tlan_phy_detect
2456 *
2457 * Returns:
2458 * Nothing
2459 * Parms:
2460 * dev A pointer to the device structure of the adapter
2461 * for which the PHY needs determined.
2462 *
2463 * So far I've found that adapters which have external PHYs
2464 * may also use the internal PHY for part of the functionality.
2465 * (eg, AUI/Thinnet). This function finds out if this TLAN
2466 * chip has an internal PHY, and then finds the first external
2467 * PHY (starting from address 0) if it exists).
2468 *
2469 ********************************************************************/
2470
2471 static void tlan_phy_detect(struct net_device *dev)
2472 {
2473 struct tlan_priv *priv = netdev_priv(dev);
2474 u16 control;
2475 u16 hi;
2476 u16 lo;
2477 u32 phy;
2478
2479 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2480 priv->phy_num = 0xffff;
2481 return;
2482 }
2483
2484 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2485
2486 if (hi != 0xffff)
2487 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2488 else
2489 priv->phy[0] = TLAN_PHY_NONE;
2490
2491 priv->phy[1] = TLAN_PHY_NONE;
2492 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2493 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2494 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2495 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2496 if ((control != 0xffff) ||
2497 (hi != 0xffff) || (lo != 0xffff)) {
2498 TLAN_DBG(TLAN_DEBUG_GNRL,
2499 "PHY found at %02x %04x %04x %04x\n",
2500 phy, control, hi, lo);
2501 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2502 (phy != TLAN_PHY_MAX_ADDR)) {
2503 priv->phy[1] = phy;
2504 }
2505 }
2506 }
2507
2508 if (priv->phy[1] != TLAN_PHY_NONE)
2509 priv->phy_num = 1;
2510 else if (priv->phy[0] != TLAN_PHY_NONE)
2511 priv->phy_num = 0;
2512 else
2513 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2514
2515 }
2516
2517
2518
2519
2520 static void tlan_phy_power_down(struct net_device *dev)
2521 {
2522 struct tlan_priv *priv = netdev_priv(dev);
2523 u16 value;
2524
2525 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2526 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2527 tlan_mii_sync(dev->base_addr);
2528 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2529 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2530 /* if using internal PHY, the external PHY must be powered on */
2531 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2532 value = MII_GC_ISOLATE; /* just isolate it from MII */
2533 tlan_mii_sync(dev->base_addr);
2534 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2535 }
2536
2537 /* Wait for 50 ms and powerup
2538 * This is abitrary. It is intended to make sure the
2539 * transceiver settles.
2540 */
2541 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2542
2543 }
2544
2545
2546
2547
2548 static void tlan_phy_power_up(struct net_device *dev)
2549 {
2550 struct tlan_priv *priv = netdev_priv(dev);
2551 u16 value;
2552
2553 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2554 tlan_mii_sync(dev->base_addr);
2555 value = MII_GC_LOOPBK;
2556 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2557 tlan_mii_sync(dev->base_addr);
2558 /* Wait for 500 ms and reset the
2559 * transceiver. The TLAN docs say both 50 ms and
2560 * 500 ms, so do the longer, just in case.
2561 */
2562 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2563
2564 }
2565
2566
2567
2568
2569 static void tlan_phy_reset(struct net_device *dev)
2570 {
2571 struct tlan_priv *priv = netdev_priv(dev);
2572 u16 phy;
2573 u16 value;
2574 unsigned long timeout = jiffies + HZ;
2575
2576 phy = priv->phy[priv->phy_num];
2577
2578 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2579 tlan_mii_sync(dev->base_addr);
2580 value = MII_GC_LOOPBK | MII_GC_RESET;
2581 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2582 do {
2583 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2584 if (time_after(jiffies, timeout)) {
2585 netdev_err(dev, "PHY reset timeout\n");
2586 return;
2587 }
2588 } while (value & MII_GC_RESET);
2589
2590 /* Wait for 500 ms and initialize.
2591 * I don't remember why I wait this long.
2592 * I've changed this to 50ms, as it seems long enough.
2593 */
2594 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2595
2596 }
2597
2598
2599
2600
2601 static void tlan_phy_start_link(struct net_device *dev)
2602 {
2603 struct tlan_priv *priv = netdev_priv(dev);
2604 u16 ability;
2605 u16 control;
2606 u16 data;
2607 u16 phy;
2608 u16 status;
2609 u16 tctl;
2610
2611 phy = priv->phy[priv->phy_num];
2612 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2613 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2614 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2615
2616 if ((status & MII_GS_AUTONEG) &&
2617 (!priv->aui)) {
2618 ability = status >> 11;
2619 if (priv->speed == TLAN_SPEED_10 &&
2620 priv->duplex == TLAN_DUPLEX_HALF) {
2621 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2622 } else if (priv->speed == TLAN_SPEED_10 &&
2623 priv->duplex == TLAN_DUPLEX_FULL) {
2624 priv->tlan_full_duplex = true;
2625 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2626 } else if (priv->speed == TLAN_SPEED_100 &&
2627 priv->duplex == TLAN_DUPLEX_HALF) {
2628 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2629 } else if (priv->speed == TLAN_SPEED_100 &&
2630 priv->duplex == TLAN_DUPLEX_FULL) {
2631 priv->tlan_full_duplex = true;
2632 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2633 } else {
2634
2635 /* Set Auto-Neg advertisement */
2636 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2637 (ability << 5) | 1);
2638 /* Enablee Auto-Neg */
2639 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2640 /* Restart Auto-Neg */
2641 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2642 /* Wait for 4 sec for autonegotiation
2643 * to complete. The max spec time is less than this
2644 * but the card need additional time to start AN.
2645 * .5 sec should be plenty extra.
2646 */
2647 netdev_info(dev, "Starting autonegotiation\n");
2648 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2649 return;
2650 }
2651
2652 }
2653
2654 if ((priv->aui) && (priv->phy_num != 0)) {
2655 priv->phy_num = 0;
2656 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2657 | TLAN_NET_CFG_PHY_EN;
2658 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2659 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2660 return;
2661 } else if (priv->phy_num == 0) {
2662 control = 0;
2663 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2664 if (priv->aui) {
2665 tctl |= TLAN_TC_AUISEL;
2666 } else {
2667 tctl &= ~TLAN_TC_AUISEL;
2668 if (priv->duplex == TLAN_DUPLEX_FULL) {
2669 control |= MII_GC_DUPLEX;
2670 priv->tlan_full_duplex = true;
2671 }
2672 if (priv->speed == TLAN_SPEED_100)
2673 control |= MII_GC_SPEEDSEL;
2674 }
2675 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2676 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2677 }
2678
2679 /* Wait for 2 sec to give the transceiver time
2680 * to establish link.
2681 */
2682 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2683
2684 }
2685
2686
2687
2688
2689 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2690 {
2691 struct tlan_priv *priv = netdev_priv(dev);
2692 u16 an_adv;
2693 u16 an_lpa;
2694 u16 mode;
2695 u16 phy;
2696 u16 status;
2697
2698 phy = priv->phy[priv->phy_num];
2699
2700 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2701 udelay(1000);
2702 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2703
2704 if (!(status & MII_GS_AUTOCMPLT)) {
2705 /* Wait for 8 sec to give the process
2706 * more time. Perhaps we should fail after a while.
2707 */
2708 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2709 return;
2710 }
2711
2712 netdev_info(dev, "Autonegotiation complete\n");
2713 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2714 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2715 mode = an_adv & an_lpa & 0x03E0;
2716 if (mode & 0x0100)
2717 priv->tlan_full_duplex = true;
2718 else if (!(mode & 0x0080) && (mode & 0x0040))
2719 priv->tlan_full_duplex = true;
2720
2721 /* switch to internal PHY for 10 Mbps */
2722 if ((!(mode & 0x0180)) &&
2723 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2724 (priv->phy_num != 0)) {
2725 priv->phy_num = 0;
2726 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2727 return;
2728 }
2729
2730 if (priv->phy_num == 0) {
2731 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2732 (an_adv & an_lpa & 0x0040)) {
2733 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2734 MII_GC_AUTOENB | MII_GC_DUPLEX);
2735 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2736 } else {
2737 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2738 MII_GC_AUTOENB);
2739 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2740 }
2741 }
2742
2743 /* Wait for 100 ms. No reason in partiticular.
2744 */
2745 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2746
2747 }
2748
2749
2750 /*********************************************************************
2751 *
2752 * tlan_phy_monitor
2753 *
2754 * Returns:
2755 * None
2756 *
2757 * Params:
2758 * data The device structure of this device.
2759 *
2760 *
2761 * This function monitors PHY condition by reading the status
2762 * register via the MII bus, controls LINK LED and notifies the
2763 * kernel about link state.
2764 *
2765 *******************************************************************/
2766
2767 static void tlan_phy_monitor(unsigned long data)
2768 {
2769 struct net_device *dev = (struct net_device *) data;
2770 struct tlan_priv *priv = netdev_priv(dev);
2771 u16 phy;
2772 u16 phy_status;
2773
2774 phy = priv->phy[priv->phy_num];
2775
2776 /* Get PHY status register */
2777 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2778
2779 /* Check if link has been lost */
2780 if (!(phy_status & MII_GS_LINK)) {
2781 if (netif_carrier_ok(dev)) {
2782 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2783 dev->name);
2784 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2785 netif_carrier_off(dev);
2786 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2787 /* power down internal PHY */
2788 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2789 MII_GC_ISOLATE;
2790
2791 tlan_mii_sync(dev->base_addr);
2792 tlan_mii_write_reg(dev, priv->phy[0],
2793 MII_GEN_CTL, data);
2794 /* set to external PHY */
2795 priv->phy_num = 1;
2796 /* restart autonegotiation */
2797 tlan_set_timer(dev, msecs_to_jiffies(400),
2798 TLAN_TIMER_PHY_PDOWN);
2799 return;
2800 }
2801 }
2802 }
2803
2804 /* Link restablished? */
2805 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2806 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2807 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2808 dev->name);
2809 netif_carrier_on(dev);
2810 }
2811 priv->media_timer.expires = jiffies + HZ;
2812 add_timer(&priv->media_timer);
2813 }
2814
2815
2816 /*****************************************************************************
2817 ******************************************************************************
2818
2819 ThunderLAN driver MII routines
2820
2821 these routines are based on the information in chap. 2 of the
2822 "ThunderLAN Programmer's Guide", pp. 15-24.
2823
2824 ******************************************************************************
2825 *****************************************************************************/
2826
2827
2828 /***************************************************************
2829 * tlan_mii_read_reg
2830 *
2831 * Returns:
2832 * false if ack received ok
2833 * true if no ack received or other error
2834 *
2835 * Parms:
2836 * dev The device structure containing
2837 * The io address and interrupt count
2838 * for this device.
2839 * phy The address of the PHY to be queried.
2840 * reg The register whose contents are to be
2841 * retrieved.
2842 * val A pointer to a variable to store the
2843 * retrieved value.
2844 *
2845 * This function uses the TLAN's MII bus to retrieve the contents
2846 * of a given register on a PHY. It sends the appropriate info
2847 * and then reads the 16-bit register value from the MII bus via
2848 * the TLAN SIO register.
2849 *
2850 **************************************************************/
2851
2852 static bool
2853 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2854 {
2855 u8 nack;
2856 u16 sio, tmp;
2857 u32 i;
2858 bool err;
2859 int minten;
2860 struct tlan_priv *priv = netdev_priv(dev);
2861 unsigned long flags = 0;
2862
2863 err = false;
2864 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2865 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2866
2867 if (!in_irq())
2868 spin_lock_irqsave(&priv->lock, flags);
2869
2870 tlan_mii_sync(dev->base_addr);
2871
2872 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2873 if (minten)
2874 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2875
2876 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2877 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2878 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2879 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2880
2881
2882 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2883
2884 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2885 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2886 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2887
2888 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2889 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2890 if (nack) { /* no ACK, so fake it */
2891 for (i = 0; i < 16; i++) {
2892 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2893 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2894 }
2895 tmp = 0xffff;
2896 err = true;
2897 } else { /* ACK, so read data */
2898 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2899 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2900 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2901 tmp |= i;
2902 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2903 }
2904 }
2905
2906
2907 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2908 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2909
2910 if (minten)
2911 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2912
2913 *val = tmp;
2914
2915 if (!in_irq())
2916 spin_unlock_irqrestore(&priv->lock, flags);
2917
2918 return err;
2919
2920 }
2921
2922
2923
2924
2925 /***************************************************************
2926 * tlan_mii_send_data
2927 *
2928 * Returns:
2929 * Nothing
2930 * Parms:
2931 * base_port The base IO port of the adapter in
2932 * question.
2933 * dev The address of the PHY to be queried.
2934 * data The value to be placed on the MII bus.
2935 * num_bits The number of bits in data that are to
2936 * be placed on the MII bus.
2937 *
2938 * This function sends on sequence of bits on the MII
2939 * configuration bus.
2940 *
2941 **************************************************************/
2942
2943 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2944 {
2945 u16 sio;
2946 u32 i;
2947
2948 if (num_bits == 0)
2949 return;
2950
2951 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2952 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2953 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2954
2955 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2956 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2957 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2958 if (data & i)
2959 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2960 else
2961 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2962 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2963 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2964 }
2965
2966 }
2967
2968
2969
2970
2971 /***************************************************************
2972 * TLan_MiiSync
2973 *
2974 * Returns:
2975 * Nothing
2976 * Parms:
2977 * base_port The base IO port of the adapter in
2978 * question.
2979 *
2980 * This functions syncs all PHYs in terms of the MII configuration
2981 * bus.
2982 *
2983 **************************************************************/
2984
2985 static void tlan_mii_sync(u16 base_port)
2986 {
2987 int i;
2988 u16 sio;
2989
2990 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2991 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2992
2993 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2994 for (i = 0; i < 32; i++) {
2995 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2996 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2997 }
2998
2999 }
3000
3001
3002
3003
3004 /***************************************************************
3005 * tlan_mii_write_reg
3006 *
3007 * Returns:
3008 * Nothing
3009 * Parms:
3010 * dev The device structure for the device
3011 * to write to.
3012 * phy The address of the PHY to be written to.
3013 * reg The register whose contents are to be
3014 * written.
3015 * val The value to be written to the register.
3016 *
3017 * This function uses the TLAN's MII bus to write the contents of a
3018 * given register on a PHY. It sends the appropriate info and then
3019 * writes the 16-bit register value from the MII configuration bus
3020 * via the TLAN SIO register.
3021 *
3022 **************************************************************/
3023
3024 static void
3025 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3026 {
3027 u16 sio;
3028 int minten;
3029 unsigned long flags = 0;
3030 struct tlan_priv *priv = netdev_priv(dev);
3031
3032 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3033 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3034
3035 if (!in_irq())
3036 spin_lock_irqsave(&priv->lock, flags);
3037
3038 tlan_mii_sync(dev->base_addr);
3039
3040 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3041 if (minten)
3042 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3043
3044 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3045 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3046 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3047 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3048
3049 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3050 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3051
3052 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3053 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3054
3055 if (minten)
3056 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3057
3058 if (!in_irq())
3059 spin_unlock_irqrestore(&priv->lock, flags);
3060
3061 }
3062
3063
3064
3065
3066 /*****************************************************************************
3067 ******************************************************************************
3068
3069 ThunderLAN driver eeprom routines
3070
3071 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3072 EEPROM. these functions are based on information in microchip's
3073 data sheet. I don't know how well this functions will work with
3074 other Eeproms.
3075
3076 ******************************************************************************
3077 *****************************************************************************/
3078
3079
3080 /***************************************************************
3081 * tlan_ee_send_start
3082 *
3083 * Returns:
3084 * Nothing
3085 * Parms:
3086 * io_base The IO port base address for the
3087 * TLAN device with the EEPROM to
3088 * use.
3089 *
3090 * This function sends a start cycle to an EEPROM attached
3091 * to a TLAN chip.
3092 *
3093 **************************************************************/
3094
3095 static void tlan_ee_send_start(u16 io_base)
3096 {
3097 u16 sio;
3098
3099 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3100 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3101
3102 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3103 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3104 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3105 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3106 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3107
3108 }
3109
3110
3111
3112
3113 /***************************************************************
3114 * tlan_ee_send_byte
3115 *
3116 * Returns:
3117 * If the correct ack was received, 0, otherwise 1
3118 * Parms: io_base The IO port base address for the
3119 * TLAN device with the EEPROM to
3120 * use.
3121 * data The 8 bits of information to
3122 * send to the EEPROM.
3123 * stop If TLAN_EEPROM_STOP is passed, a
3124 * stop cycle is sent after the
3125 * byte is sent after the ack is
3126 * read.
3127 *
3128 * This function sends a byte on the serial EEPROM line,
3129 * driving the clock to send each bit. The function then
3130 * reverses transmission direction and reads an acknowledge
3131 * bit.
3132 *
3133 **************************************************************/
3134
3135 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3136 {
3137 int err;
3138 u8 place;
3139 u16 sio;
3140
3141 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3142 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3143
3144 /* Assume clock is low, tx is enabled; */
3145 for (place = 0x80; place != 0; place >>= 1) {
3146 if (place & data)
3147 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3148 else
3149 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3150 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3151 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3152 }
3153 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3154 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3155 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3156 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3157 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3158
3159 if ((!err) && stop) {
3160 /* STOP, raise data while clock is high */
3161 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3162 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3163 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3164 }
3165
3166 return err;
3167
3168 }
3169
3170
3171
3172
3173 /***************************************************************
3174 * tlan_ee_receive_byte
3175 *
3176 * Returns:
3177 * Nothing
3178 * Parms:
3179 * io_base The IO port base address for the
3180 * TLAN device with the EEPROM to
3181 * use.
3182 * data An address to a char to hold the
3183 * data sent from the EEPROM.
3184 * stop If TLAN_EEPROM_STOP is passed, a
3185 * stop cycle is sent after the
3186 * byte is received, and no ack is
3187 * sent.
3188 *
3189 * This function receives 8 bits of data from the EEPROM
3190 * over the serial link. It then sends and ack bit, or no
3191 * ack and a stop bit. This function is used to retrieve
3192 * data after the address of a byte in the EEPROM has been
3193 * sent.
3194 *
3195 **************************************************************/
3196
3197 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3198 {
3199 u8 place;
3200 u16 sio;
3201
3202 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3203 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3204 *data = 0;
3205
3206 /* Assume clock is low, tx is enabled; */
3207 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3208 for (place = 0x80; place; place >>= 1) {
3209 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3210 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3211 *data |= place;
3212 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3213 }
3214
3215 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3216 if (!stop) {
3217 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3218 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3219 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3220 } else {
3221 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3222 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3223 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3224 /* STOP, raise data while clock is high */
3225 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3226 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3227 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3228 }
3229
3230 }
3231
3232
3233
3234
3235 /***************************************************************
3236 * tlan_ee_read_byte
3237 *
3238 * Returns:
3239 * No error = 0, else, the stage at which the error
3240 * occurred.
3241 * Parms:
3242 * io_base The IO port base address for the
3243 * TLAN device with the EEPROM to
3244 * use.
3245 * ee_addr The address of the byte in the
3246 * EEPROM whose contents are to be
3247 * retrieved.
3248 * data An address to a char to hold the
3249 * data obtained from the EEPROM.
3250 *
3251 * This function reads a byte of information from an byte
3252 * cell in the EEPROM.
3253 *
3254 **************************************************************/
3255
3256 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3257 {
3258 int err;
3259 struct tlan_priv *priv = netdev_priv(dev);
3260 unsigned long flags = 0;
3261 int ret = 0;
3262
3263 spin_lock_irqsave(&priv->lock, flags);
3264
3265 tlan_ee_send_start(dev->base_addr);
3266 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3267 if (err) {
3268 ret = 1;
3269 goto fail;
3270 }
3271 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3272 if (err) {
3273 ret = 2;
3274 goto fail;
3275 }
3276 tlan_ee_send_start(dev->base_addr);
3277 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3278 if (err) {
3279 ret = 3;
3280 goto fail;
3281 }
3282 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3283 fail:
3284 spin_unlock_irqrestore(&priv->lock, flags);
3285
3286 return ret;
3287
3288 }
3289
3290
3291
Linux with added FPC-III support