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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
[deliverable/linux.git] / drivers / net / ethernet / ti / tlan.c
1 /*******************************************************************************
2 *
3 * Linux ThunderLAN Driver
4 *
5 * tlan.c
6 * by James Banks
7 *
8 * (C) 1997-1998 Caldera, Inc.
9 * (C) 1998 James Banks
10 * (C) 1999-2001 Torben Mathiasen
11 * (C) 2002 Samuel Chessman
12 *
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License, incorporated herein by reference.
15 *
16 ** Useful (if not required) reading:
17 *
18 * Texas Instruments, ThunderLAN Programmer's Guide,
19 * TI Literature Number SPWU013A
20 * available in PDF format from www.ti.com
21 * Level One, LXT901 and LXT970 Data Sheets
22 * available in PDF format from www.level1.com
23 * National Semiconductor, DP83840A Data Sheet
24 * available in PDF format from www.national.com
25 * Microchip Technology, 24C01A/02A/04A Data Sheet
26 * available in PDF format from www.microchip.com
27 *
28 ******************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/hardirq.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/interrupt.h>
36 #include <linux/ioport.h>
37 #include <linux/eisa.h>
38 #include <linux/pci.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/delay.h>
43 #include <linux/spinlock.h>
44 #include <linux/workqueue.h>
45 #include <linux/mii.h>
46
47 #include "tlan.h"
48
49
50 /* For removing EISA devices */
51 static struct net_device *tlan_eisa_devices;
52
53 static int tlan_devices_installed;
54
55 /* Set speed, duplex and aui settings */
56 static int aui[MAX_TLAN_BOARDS];
57 static int duplex[MAX_TLAN_BOARDS];
58 static int speed[MAX_TLAN_BOARDS];
59 static int boards_found;
60 module_param_array(aui, int, NULL, 0);
61 module_param_array(duplex, int, NULL, 0);
62 module_param_array(speed, int, NULL, 0);
63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64 MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
67
68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70 MODULE_LICENSE("GPL");
71
72 /* 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 #endif
614 err_out:
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 dev->trans_start = jiffies; /* 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 host_int = 0;
1655 if (priv->tlan_rev < 0x30) {
1656 TLAN_DBG(TLAN_DEBUG_TX,
1657 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1658 priv->tx_head, priv->tx_tail);
1659 head_list = priv->tx_list + priv->tx_head;
1660 head_list_phys = priv->tx_list_dma
1661 + sizeof(struct tlan_list)*priv->tx_head;
1662 if ((head_list->c_stat & TLAN_CSTAT_READY)
1663 == TLAN_CSTAT_READY) {
1664 netif_stop_queue(dev);
1665 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1666 ack |= TLAN_HC_GO;
1667 } else {
1668 priv->tx_in_progress = 0;
1669 }
1670 }
1671
1672 return ack;
1673
1674 }
1675
1676
1677
1678
1679 /***************************************************************
1680 * tlan_handle_status_check
1681 *
1682 * Returns:
1683 * 0 if Adapter check, 1 if Network Status check.
1684 * Parms:
1685 * dev Device assigned the IRQ that was
1686 * raised.
1687 * host_int The contents of the HOST_INT
1688 * port.
1689 *
1690 * This function handles Adapter Check/Network Status
1691 * interrupts generated by the adapter. It checks the
1692 * vector in the HOST_INT register to determine if it is
1693 * an Adapter Check interrupt. If so, it resets the
1694 * adapter. Otherwise it clears the status registers
1695 * and services the PHY.
1696 *
1697 **************************************************************/
1698
1699 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1700 {
1701 struct tlan_priv *priv = netdev_priv(dev);
1702 u32 ack;
1703 u32 error;
1704 u8 net_sts;
1705 u32 phy;
1706 u16 tlphy_ctl;
1707 u16 tlphy_sts;
1708
1709 ack = 1;
1710 if (host_int & TLAN_HI_IV_MASK) {
1711 netif_stop_queue(dev);
1712 error = inl(dev->base_addr + TLAN_CH_PARM);
1713 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1714 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1715 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1716
1717 schedule_work(&priv->tlan_tqueue);
1718
1719 netif_wake_queue(dev);
1720 ack = 0;
1721 } else {
1722 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1723 phy = priv->phy[priv->phy_num];
1724
1725 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1726 if (net_sts) {
1727 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1728 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1729 dev->name, (unsigned) net_sts);
1730 }
1731 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1732 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1733 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1734 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1735 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1736 tlphy_ctl |= TLAN_TC_SWAPOL;
1737 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1738 tlphy_ctl);
1739 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1740 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1741 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1742 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1743 tlphy_ctl);
1744 }
1745
1746 if (debug)
1747 tlan_phy_print(dev);
1748 }
1749 }
1750
1751 return ack;
1752
1753 }
1754
1755
1756
1757
1758 /***************************************************************
1759 * tlan_handle_rx_eoc
1760 *
1761 * Returns:
1762 * 1
1763 * Parms:
1764 * dev Device assigned the IRQ that was
1765 * raised.
1766 * host_int The contents of the HOST_INT
1767 * port.
1768 *
1769 * This driver is structured to determine EOC occurrences by
1770 * reading the CSTAT member of the list structure. Rx EOC
1771 * interrupts are disabled via the DIO INTDIS register.
1772 * However, TLAN chips before revision 3.0 didn't have this
1773 * CSTAT member or a INTDIS register, so if this chip is
1774 * pre-3.0, process EOC interrupts normally.
1775 *
1776 **************************************************************/
1777
1778 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1779 {
1780 struct tlan_priv *priv = netdev_priv(dev);
1781 dma_addr_t head_list_phys;
1782 u32 ack = 1;
1783
1784 if (priv->tlan_rev < 0x30) {
1785 TLAN_DBG(TLAN_DEBUG_RX,
1786 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1787 priv->rx_head, priv->rx_tail);
1788 head_list_phys = priv->rx_list_dma
1789 + sizeof(struct tlan_list)*priv->rx_head;
1790 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1791 ack |= TLAN_HC_GO | TLAN_HC_RT;
1792 priv->rx_eoc_count++;
1793 }
1794
1795 return ack;
1796
1797 }
1798
1799
1800
1801
1802 /*****************************************************************************
1803 ******************************************************************************
1804
1805 ThunderLAN driver timer function
1806
1807 ******************************************************************************
1808 *****************************************************************************/
1809
1810
1811 /***************************************************************
1812 * tlan_timer
1813 *
1814 * Returns:
1815 * Nothing
1816 * Parms:
1817 * data A value given to add timer when
1818 * add_timer was called.
1819 *
1820 * This function handles timed functionality for the
1821 * TLAN driver. The two current timer uses are for
1822 * delaying for autonegotionation and driving the ACT LED.
1823 * - Autonegotiation requires being allowed about
1824 * 2 1/2 seconds before attempting to transmit a
1825 * packet. It would be a very bad thing to hang
1826 * the kernel this long, so the driver doesn't
1827 * allow transmission 'til after this time, for
1828 * certain PHYs. It would be much nicer if all
1829 * PHYs were interrupt-capable like the internal
1830 * PHY.
1831 * - The ACT LED, which shows adapter activity, is
1832 * driven by the driver, and so must be left on
1833 * for a short period to power up the LED so it
1834 * can be seen. This delay can be changed by
1835 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1836 * if desired. 100 ms produces a slightly
1837 * sluggish response.
1838 *
1839 **************************************************************/
1840
1841 static void tlan_timer(unsigned long data)
1842 {
1843 struct net_device *dev = (struct net_device *) data;
1844 struct tlan_priv *priv = netdev_priv(dev);
1845 u32 elapsed;
1846 unsigned long flags = 0;
1847
1848 priv->timer.function = NULL;
1849
1850 switch (priv->timer_type) {
1851 case TLAN_TIMER_PHY_PDOWN:
1852 tlan_phy_power_down(dev);
1853 break;
1854 case TLAN_TIMER_PHY_PUP:
1855 tlan_phy_power_up(dev);
1856 break;
1857 case TLAN_TIMER_PHY_RESET:
1858 tlan_phy_reset(dev);
1859 break;
1860 case TLAN_TIMER_PHY_START_LINK:
1861 tlan_phy_start_link(dev);
1862 break;
1863 case TLAN_TIMER_PHY_FINISH_AN:
1864 tlan_phy_finish_auto_neg(dev);
1865 break;
1866 case TLAN_TIMER_FINISH_RESET:
1867 tlan_finish_reset(dev);
1868 break;
1869 case TLAN_TIMER_ACTIVITY:
1870 spin_lock_irqsave(&priv->lock, flags);
1871 if (priv->timer.function == NULL) {
1872 elapsed = jiffies - priv->timer_set_at;
1873 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1874 tlan_dio_write8(dev->base_addr,
1875 TLAN_LED_REG, TLAN_LED_LINK);
1876 } else {
1877 priv->timer.function = tlan_timer;
1878 priv->timer.expires = priv->timer_set_at
1879 + TLAN_TIMER_ACT_DELAY;
1880 spin_unlock_irqrestore(&priv->lock, flags);
1881 add_timer(&priv->timer);
1882 break;
1883 }
1884 }
1885 spin_unlock_irqrestore(&priv->lock, flags);
1886 break;
1887 default:
1888 break;
1889 }
1890
1891 }
1892
1893
1894 /*****************************************************************************
1895 ******************************************************************************
1896
1897 ThunderLAN driver adapter related routines
1898
1899 ******************************************************************************
1900 *****************************************************************************/
1901
1902
1903 /***************************************************************
1904 * tlan_reset_lists
1905 *
1906 * Returns:
1907 * Nothing
1908 * Parms:
1909 * dev The device structure with the list
1910 * stuctures to be reset.
1911 *
1912 * This routine sets the variables associated with managing
1913 * the TLAN lists to their initial values.
1914 *
1915 **************************************************************/
1916
1917 static void tlan_reset_lists(struct net_device *dev)
1918 {
1919 struct tlan_priv *priv = netdev_priv(dev);
1920 int i;
1921 struct tlan_list *list;
1922 dma_addr_t list_phys;
1923 struct sk_buff *skb;
1924
1925 priv->tx_head = 0;
1926 priv->tx_tail = 0;
1927 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1928 list = priv->tx_list + i;
1929 list->c_stat = TLAN_CSTAT_UNUSED;
1930 list->buffer[0].address = 0;
1931 list->buffer[2].count = 0;
1932 list->buffer[2].address = 0;
1933 list->buffer[8].address = 0;
1934 list->buffer[9].address = 0;
1935 }
1936
1937 priv->rx_head = 0;
1938 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1939 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1940 list = priv->rx_list + i;
1941 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1942 list->c_stat = TLAN_CSTAT_READY;
1943 list->frame_size = TLAN_MAX_FRAME_SIZE;
1944 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1945 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1946 if (!skb)
1947 break;
1948
1949 list->buffer[0].address = pci_map_single(priv->pci_dev,
1950 skb->data,
1951 TLAN_MAX_FRAME_SIZE,
1952 PCI_DMA_FROMDEVICE);
1953 tlan_store_skb(list, skb);
1954 list->buffer[1].count = 0;
1955 list->buffer[1].address = 0;
1956 list->forward = list_phys + sizeof(struct tlan_list);
1957 }
1958
1959 /* in case ran out of memory early, clear bits */
1960 while (i < TLAN_NUM_RX_LISTS) {
1961 tlan_store_skb(priv->rx_list + i, NULL);
1962 ++i;
1963 }
1964 list->forward = 0;
1965
1966 }
1967
1968
1969 static void tlan_free_lists(struct net_device *dev)
1970 {
1971 struct tlan_priv *priv = netdev_priv(dev);
1972 int i;
1973 struct tlan_list *list;
1974 struct sk_buff *skb;
1975
1976 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1977 list = priv->tx_list + i;
1978 skb = tlan_get_skb(list);
1979 if (skb) {
1980 pci_unmap_single(
1981 priv->pci_dev,
1982 list->buffer[0].address,
1983 max(skb->len,
1984 (unsigned int)TLAN_MIN_FRAME_SIZE),
1985 PCI_DMA_TODEVICE);
1986 dev_kfree_skb_any(skb);
1987 list->buffer[8].address = 0;
1988 list->buffer[9].address = 0;
1989 }
1990 }
1991
1992 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1993 list = priv->rx_list + i;
1994 skb = tlan_get_skb(list);
1995 if (skb) {
1996 pci_unmap_single(priv->pci_dev,
1997 list->buffer[0].address,
1998 TLAN_MAX_FRAME_SIZE,
1999 PCI_DMA_FROMDEVICE);
2000 dev_kfree_skb_any(skb);
2001 list->buffer[8].address = 0;
2002 list->buffer[9].address = 0;
2003 }
2004 }
2005 }
2006
2007
2008
2009
2010 /***************************************************************
2011 * tlan_print_dio
2012 *
2013 * Returns:
2014 * Nothing
2015 * Parms:
2016 * io_base Base IO port of the device of
2017 * which to print DIO registers.
2018 *
2019 * This function prints out all the internal (DIO)
2020 * registers of a TLAN chip.
2021 *
2022 **************************************************************/
2023
2024 static void tlan_print_dio(u16 io_base)
2025 {
2026 u32 data0, data1;
2027 int i;
2028
2029 pr_info("Contents of internal registers for io base 0x%04hx\n",
2030 io_base);
2031 pr_info("Off. +0 +4\n");
2032 for (i = 0; i < 0x4C; i += 8) {
2033 data0 = tlan_dio_read32(io_base, i);
2034 data1 = tlan_dio_read32(io_base, i + 0x4);
2035 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2036 }
2037
2038 }
2039
2040
2041
2042
2043 /***************************************************************
2044 * TLan_PrintList
2045 *
2046 * Returns:
2047 * Nothing
2048 * Parms:
2049 * list A pointer to the struct tlan_list structure to
2050 * be printed.
2051 * type A string to designate type of list,
2052 * "Rx" or "Tx".
2053 * num The index of the list.
2054 *
2055 * This function prints out the contents of the list
2056 * pointed to by the list parameter.
2057 *
2058 **************************************************************/
2059
2060 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2061 {
2062 int i;
2063
2064 pr_info("%s List %d at %p\n", type, num, list);
2065 pr_info(" Forward = 0x%08x\n", list->forward);
2066 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2067 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2068 /* for (i = 0; i < 10; i++) { */
2069 for (i = 0; i < 2; i++) {
2070 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2071 i, list->buffer[i].count, list->buffer[i].address);
2072 }
2073
2074 }
2075
2076
2077
2078
2079 /***************************************************************
2080 * tlan_read_and_clear_stats
2081 *
2082 * Returns:
2083 * Nothing
2084 * Parms:
2085 * dev Pointer to device structure of adapter
2086 * to which to read stats.
2087 * record Flag indicating whether to add
2088 *
2089 * This functions reads all the internal status registers
2090 * of the TLAN chip, which clears them as a side effect.
2091 * It then either adds the values to the device's status
2092 * struct, or discards them, depending on whether record
2093 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2094 *
2095 **************************************************************/
2096
2097 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2098 {
2099 u32 tx_good, tx_under;
2100 u32 rx_good, rx_over;
2101 u32 def_tx, crc, code;
2102 u32 multi_col, single_col;
2103 u32 excess_col, late_col, loss;
2104
2105 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2106 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2107 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2108 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2109 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2110
2111 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2112 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2113 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2114 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2115 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2116
2117 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2118 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2119 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2120 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2121 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2122
2123 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2124 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2125 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2126 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2127 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2128
2129 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2130 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2131 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2132 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2133
2134 if (record) {
2135 dev->stats.rx_packets += rx_good;
2136 dev->stats.rx_errors += rx_over + crc + code;
2137 dev->stats.tx_packets += tx_good;
2138 dev->stats.tx_errors += tx_under + loss;
2139 dev->stats.collisions += multi_col
2140 + single_col + excess_col + late_col;
2141
2142 dev->stats.rx_over_errors += rx_over;
2143 dev->stats.rx_crc_errors += crc;
2144 dev->stats.rx_frame_errors += code;
2145
2146 dev->stats.tx_aborted_errors += tx_under;
2147 dev->stats.tx_carrier_errors += loss;
2148 }
2149
2150 }
2151
2152
2153
2154
2155 /***************************************************************
2156 * TLan_Reset
2157 *
2158 * Returns:
2159 * 0
2160 * Parms:
2161 * dev Pointer to device structure of adapter
2162 * to be reset.
2163 *
2164 * This function resets the adapter and it's physical
2165 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2166 * Programmer's Guide" for details. The routine tries to
2167 * implement what is detailed there, though adjustments
2168 * have been made.
2169 *
2170 **************************************************************/
2171
2172 static void
2173 tlan_reset_adapter(struct net_device *dev)
2174 {
2175 struct tlan_priv *priv = netdev_priv(dev);
2176 int i;
2177 u32 addr;
2178 u32 data;
2179 u8 data8;
2180
2181 priv->tlan_full_duplex = false;
2182 priv->phy_online = 0;
2183 netif_carrier_off(dev);
2184
2185 /* 1. Assert reset bit. */
2186
2187 data = inl(dev->base_addr + TLAN_HOST_CMD);
2188 data |= TLAN_HC_AD_RST;
2189 outl(data, dev->base_addr + TLAN_HOST_CMD);
2190
2191 udelay(1000);
2192
2193 /* 2. Turn off interrupts. (Probably isn't necessary) */
2194
2195 data = inl(dev->base_addr + TLAN_HOST_CMD);
2196 data |= TLAN_HC_INT_OFF;
2197 outl(data, dev->base_addr + TLAN_HOST_CMD);
2198
2199 /* 3. Clear AREGs and HASHs. */
2200
2201 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2202 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2203
2204 /* 4. Setup NetConfig register. */
2205
2206 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2207 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2208
2209 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2210
2211 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2212 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2213
2214 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2215
2216 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2217 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2218 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2219
2220 /* 7. Setup the remaining registers. */
2221
2222 if (priv->tlan_rev >= 0x30) {
2223 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2224 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2225 }
2226 tlan_phy_detect(dev);
2227 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2228
2229 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2230 data |= TLAN_NET_CFG_BIT;
2231 if (priv->aui == 1) {
2232 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2233 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2234 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2235 priv->tlan_full_duplex = true;
2236 } else {
2237 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2238 }
2239 }
2240
2241 /* don't power down internal PHY if we're going to use it */
2242 if (priv->phy_num == 0 ||
2243 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2244 data |= TLAN_NET_CFG_PHY_EN;
2245 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2246
2247 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2248 tlan_finish_reset(dev);
2249 else
2250 tlan_phy_power_down(dev);
2251
2252 }
2253
2254
2255
2256
2257 static void
2258 tlan_finish_reset(struct net_device *dev)
2259 {
2260 struct tlan_priv *priv = netdev_priv(dev);
2261 u8 data;
2262 u32 phy;
2263 u8 sio;
2264 u16 status;
2265 u16 partner;
2266 u16 tlphy_ctl;
2267 u16 tlphy_par;
2268 u16 tlphy_id1, tlphy_id2;
2269 int i;
2270
2271 phy = priv->phy[priv->phy_num];
2272
2273 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2274 if (priv->tlan_full_duplex)
2275 data |= TLAN_NET_CMD_DUPLEX;
2276 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2277 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2278 if (priv->phy_num == 0)
2279 data |= TLAN_NET_MASK_MASK7;
2280 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2281 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2282 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2283 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2284
2285 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2286 (priv->aui)) {
2287 status = MII_GS_LINK;
2288 netdev_info(dev, "Link forced\n");
2289 } else {
2290 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2291 udelay(1000);
2292 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2293 if (status & MII_GS_LINK) {
2294 /* We only support link info on Nat.Sem. PHY's */
2295 if ((tlphy_id1 == NAT_SEM_ID1) &&
2296 (tlphy_id2 == NAT_SEM_ID2)) {
2297 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2298 &partner);
2299 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2300 &tlphy_par);
2301
2302 netdev_info(dev,
2303 "Link active, %s %uMbps %s-Duplex\n",
2304 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2305 ? "forced" : "Autonegotiation enabled,",
2306 tlphy_par & TLAN_PHY_SPEED_100
2307 ? 100 : 10,
2308 tlphy_par & TLAN_PHY_DUPLEX_FULL
2309 ? "Full" : "Half");
2310
2311 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2312 netdev_info(dev, "Partner capability:");
2313 for (i = 5; i < 10; i++)
2314 if (partner & (1 << i))
2315 pr_cont(" %s",
2316 media[i-5]);
2317 pr_cont("\n");
2318 }
2319 } else
2320 netdev_info(dev, "Link active\n");
2321 /* Enabling link beat monitoring */
2322 priv->media_timer.function = tlan_phy_monitor;
2323 priv->media_timer.data = (unsigned long) dev;
2324 priv->media_timer.expires = jiffies + HZ;
2325 add_timer(&priv->media_timer);
2326 }
2327 }
2328
2329 if (priv->phy_num == 0) {
2330 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2331 tlphy_ctl |= TLAN_TC_INTEN;
2332 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2333 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2334 sio |= TLAN_NET_SIO_MINTEN;
2335 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2336 }
2337
2338 if (status & MII_GS_LINK) {
2339 tlan_set_mac(dev, 0, dev->dev_addr);
2340 priv->phy_online = 1;
2341 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2342 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2343 outb((TLAN_HC_REQ_INT >> 8),
2344 dev->base_addr + TLAN_HOST_CMD + 1);
2345 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2346 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2347 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2348 netif_carrier_on(dev);
2349 } else {
2350 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2351 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2352 return;
2353 }
2354 tlan_set_multicast_list(dev);
2355
2356 }
2357
2358
2359
2360
2361 /***************************************************************
2362 * tlan_set_mac
2363 *
2364 * Returns:
2365 * Nothing
2366 * Parms:
2367 * dev Pointer to device structure of adapter
2368 * on which to change the AREG.
2369 * areg The AREG to set the address in (0 - 3).
2370 * mac A pointer to an array of chars. Each
2371 * element stores one byte of the address.
2372 * IE, it isn't in ascii.
2373 *
2374 * This function transfers a MAC address to one of the
2375 * TLAN AREGs (address registers). The TLAN chip locks
2376 * the register on writing to offset 0 and unlocks the
2377 * register after writing to offset 5. If NULL is passed
2378 * in mac, then the AREG is filled with 0's.
2379 *
2380 **************************************************************/
2381
2382 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2383 {
2384 int i;
2385
2386 areg *= 6;
2387
2388 if (mac != NULL) {
2389 for (i = 0; i < 6; i++)
2390 tlan_dio_write8(dev->base_addr,
2391 TLAN_AREG_0 + areg + i, mac[i]);
2392 } else {
2393 for (i = 0; i < 6; i++)
2394 tlan_dio_write8(dev->base_addr,
2395 TLAN_AREG_0 + areg + i, 0);
2396 }
2397
2398 }
2399
2400
2401
2402
2403 /*****************************************************************************
2404 ******************************************************************************
2405
2406 ThunderLAN driver PHY layer routines
2407
2408 ******************************************************************************
2409 *****************************************************************************/
2410
2411
2412
2413 /*********************************************************************
2414 * tlan_phy_print
2415 *
2416 * Returns:
2417 * Nothing
2418 * Parms:
2419 * dev A pointer to the device structure of the
2420 * TLAN device having the PHYs to be detailed.
2421 *
2422 * This function prints the registers a PHY (aka transceiver).
2423 *
2424 ********************************************************************/
2425
2426 static void tlan_phy_print(struct net_device *dev)
2427 {
2428 struct tlan_priv *priv = netdev_priv(dev);
2429 u16 i, data0, data1, data2, data3, phy;
2430
2431 phy = priv->phy[priv->phy_num];
2432
2433 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2434 netdev_info(dev, "Unmanaged PHY\n");
2435 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2436 netdev_info(dev, "PHY 0x%02x\n", phy);
2437 pr_info(" Off. +0 +1 +2 +3\n");
2438 for (i = 0; i < 0x20; i += 4) {
2439 tlan_mii_read_reg(dev, phy, i, &data0);
2440 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2441 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2442 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2443 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2444 i, data0, data1, data2, data3);
2445 }
2446 } else {
2447 netdev_info(dev, "Invalid PHY\n");
2448 }
2449
2450 }
2451
2452
2453
2454
2455 /*********************************************************************
2456 * tlan_phy_detect
2457 *
2458 * Returns:
2459 * Nothing
2460 * Parms:
2461 * dev A pointer to the device structure of the adapter
2462 * for which the PHY needs determined.
2463 *
2464 * So far I've found that adapters which have external PHYs
2465 * may also use the internal PHY for part of the functionality.
2466 * (eg, AUI/Thinnet). This function finds out if this TLAN
2467 * chip has an internal PHY, and then finds the first external
2468 * PHY (starting from address 0) if it exists).
2469 *
2470 ********************************************************************/
2471
2472 static void tlan_phy_detect(struct net_device *dev)
2473 {
2474 struct tlan_priv *priv = netdev_priv(dev);
2475 u16 control;
2476 u16 hi;
2477 u16 lo;
2478 u32 phy;
2479
2480 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2481 priv->phy_num = 0xffff;
2482 return;
2483 }
2484
2485 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2486
2487 if (hi != 0xffff)
2488 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2489 else
2490 priv->phy[0] = TLAN_PHY_NONE;
2491
2492 priv->phy[1] = TLAN_PHY_NONE;
2493 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2494 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2495 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2496 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2497 if ((control != 0xffff) ||
2498 (hi != 0xffff) || (lo != 0xffff)) {
2499 TLAN_DBG(TLAN_DEBUG_GNRL,
2500 "PHY found at %02x %04x %04x %04x\n",
2501 phy, control, hi, lo);
2502 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2503 (phy != TLAN_PHY_MAX_ADDR)) {
2504 priv->phy[1] = phy;
2505 }
2506 }
2507 }
2508
2509 if (priv->phy[1] != TLAN_PHY_NONE)
2510 priv->phy_num = 1;
2511 else if (priv->phy[0] != TLAN_PHY_NONE)
2512 priv->phy_num = 0;
2513 else
2514 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2515
2516 }
2517
2518
2519
2520
2521 static void tlan_phy_power_down(struct net_device *dev)
2522 {
2523 struct tlan_priv *priv = netdev_priv(dev);
2524 u16 value;
2525
2526 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2527 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2528 tlan_mii_sync(dev->base_addr);
2529 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2530 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2531 /* if using internal PHY, the external PHY must be powered on */
2532 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2533 value = MII_GC_ISOLATE; /* just isolate it from MII */
2534 tlan_mii_sync(dev->base_addr);
2535 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2536 }
2537
2538 /* Wait for 50 ms and powerup
2539 * This is abitrary. It is intended to make sure the
2540 * transceiver settles.
2541 */
2542 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2543
2544 }
2545
2546
2547
2548
2549 static void tlan_phy_power_up(struct net_device *dev)
2550 {
2551 struct tlan_priv *priv = netdev_priv(dev);
2552 u16 value;
2553
2554 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2555 tlan_mii_sync(dev->base_addr);
2556 value = MII_GC_LOOPBK;
2557 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2558 tlan_mii_sync(dev->base_addr);
2559 /* Wait for 500 ms and reset the
2560 * transceiver. The TLAN docs say both 50 ms and
2561 * 500 ms, so do the longer, just in case.
2562 */
2563 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2564
2565 }
2566
2567
2568
2569
2570 static void tlan_phy_reset(struct net_device *dev)
2571 {
2572 struct tlan_priv *priv = netdev_priv(dev);
2573 u16 phy;
2574 u16 value;
2575 unsigned long timeout = jiffies + HZ;
2576
2577 phy = priv->phy[priv->phy_num];
2578
2579 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2580 tlan_mii_sync(dev->base_addr);
2581 value = MII_GC_LOOPBK | MII_GC_RESET;
2582 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2583 do {
2584 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2585 if (time_after(jiffies, timeout)) {
2586 netdev_err(dev, "PHY reset timeout\n");
2587 return;
2588 }
2589 } while (value & MII_GC_RESET);
2590
2591 /* Wait for 500 ms and initialize.
2592 * I don't remember why I wait this long.
2593 * I've changed this to 50ms, as it seems long enough.
2594 */
2595 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2596
2597 }
2598
2599
2600
2601
2602 static void tlan_phy_start_link(struct net_device *dev)
2603 {
2604 struct tlan_priv *priv = netdev_priv(dev);
2605 u16 ability;
2606 u16 control;
2607 u16 data;
2608 u16 phy;
2609 u16 status;
2610 u16 tctl;
2611
2612 phy = priv->phy[priv->phy_num];
2613 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2614 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2615 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2616
2617 if ((status & MII_GS_AUTONEG) &&
2618 (!priv->aui)) {
2619 ability = status >> 11;
2620 if (priv->speed == TLAN_SPEED_10 &&
2621 priv->duplex == TLAN_DUPLEX_HALF) {
2622 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2623 } else if (priv->speed == TLAN_SPEED_10 &&
2624 priv->duplex == TLAN_DUPLEX_FULL) {
2625 priv->tlan_full_duplex = true;
2626 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2627 } else if (priv->speed == TLAN_SPEED_100 &&
2628 priv->duplex == TLAN_DUPLEX_HALF) {
2629 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2630 } else if (priv->speed == TLAN_SPEED_100 &&
2631 priv->duplex == TLAN_DUPLEX_FULL) {
2632 priv->tlan_full_duplex = true;
2633 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2634 } else {
2635
2636 /* Set Auto-Neg advertisement */
2637 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2638 (ability << 5) | 1);
2639 /* Enablee Auto-Neg */
2640 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2641 /* Restart Auto-Neg */
2642 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2643 /* Wait for 4 sec for autonegotiation
2644 * to complete. The max spec time is less than this
2645 * but the card need additional time to start AN.
2646 * .5 sec should be plenty extra.
2647 */
2648 netdev_info(dev, "Starting autonegotiation\n");
2649 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2650 return;
2651 }
2652
2653 }
2654
2655 if ((priv->aui) && (priv->phy_num != 0)) {
2656 priv->phy_num = 0;
2657 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2658 | TLAN_NET_CFG_PHY_EN;
2659 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2660 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2661 return;
2662 } else if (priv->phy_num == 0) {
2663 control = 0;
2664 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2665 if (priv->aui) {
2666 tctl |= TLAN_TC_AUISEL;
2667 } else {
2668 tctl &= ~TLAN_TC_AUISEL;
2669 if (priv->duplex == TLAN_DUPLEX_FULL) {
2670 control |= MII_GC_DUPLEX;
2671 priv->tlan_full_duplex = true;
2672 }
2673 if (priv->speed == TLAN_SPEED_100)
2674 control |= MII_GC_SPEEDSEL;
2675 }
2676 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2677 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2678 }
2679
2680 /* Wait for 2 sec to give the transceiver time
2681 * to establish link.
2682 */
2683 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2684
2685 }
2686
2687
2688
2689
2690 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2691 {
2692 struct tlan_priv *priv = netdev_priv(dev);
2693 u16 an_adv;
2694 u16 an_lpa;
2695 u16 mode;
2696 u16 phy;
2697 u16 status;
2698
2699 phy = priv->phy[priv->phy_num];
2700
2701 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2702 udelay(1000);
2703 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2704
2705 if (!(status & MII_GS_AUTOCMPLT)) {
2706 /* Wait for 8 sec to give the process
2707 * more time. Perhaps we should fail after a while.
2708 */
2709 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2710 return;
2711 }
2712
2713 netdev_info(dev, "Autonegotiation complete\n");
2714 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2715 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2716 mode = an_adv & an_lpa & 0x03E0;
2717 if (mode & 0x0100)
2718 priv->tlan_full_duplex = true;
2719 else if (!(mode & 0x0080) && (mode & 0x0040))
2720 priv->tlan_full_duplex = true;
2721
2722 /* switch to internal PHY for 10 Mbps */
2723 if ((!(mode & 0x0180)) &&
2724 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2725 (priv->phy_num != 0)) {
2726 priv->phy_num = 0;
2727 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2728 return;
2729 }
2730
2731 if (priv->phy_num == 0) {
2732 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2733 (an_adv & an_lpa & 0x0040)) {
2734 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2735 MII_GC_AUTOENB | MII_GC_DUPLEX);
2736 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2737 } else {
2738 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2739 MII_GC_AUTOENB);
2740 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2741 }
2742 }
2743
2744 /* Wait for 100 ms. No reason in partiticular.
2745 */
2746 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2747
2748 }
2749
2750
2751 /*********************************************************************
2752 *
2753 * tlan_phy_monitor
2754 *
2755 * Returns:
2756 * None
2757 *
2758 * Params:
2759 * data The device structure of this device.
2760 *
2761 *
2762 * This function monitors PHY condition by reading the status
2763 * register via the MII bus, controls LINK LED and notifies the
2764 * kernel about link state.
2765 *
2766 *******************************************************************/
2767
2768 static void tlan_phy_monitor(unsigned long data)
2769 {
2770 struct net_device *dev = (struct net_device *) data;
2771 struct tlan_priv *priv = netdev_priv(dev);
2772 u16 phy;
2773 u16 phy_status;
2774
2775 phy = priv->phy[priv->phy_num];
2776
2777 /* Get PHY status register */
2778 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2779
2780 /* Check if link has been lost */
2781 if (!(phy_status & MII_GS_LINK)) {
2782 if (netif_carrier_ok(dev)) {
2783 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2784 dev->name);
2785 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2786 netif_carrier_off(dev);
2787 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2788 /* power down internal PHY */
2789 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2790 MII_GC_ISOLATE;
2791
2792 tlan_mii_sync(dev->base_addr);
2793 tlan_mii_write_reg(dev, priv->phy[0],
2794 MII_GEN_CTL, data);
2795 /* set to external PHY */
2796 priv->phy_num = 1;
2797 /* restart autonegotiation */
2798 tlan_set_timer(dev, msecs_to_jiffies(400),
2799 TLAN_TIMER_PHY_PDOWN);
2800 return;
2801 }
2802 }
2803 }
2804
2805 /* Link restablished? */
2806 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2807 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2808 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2809 dev->name);
2810 netif_carrier_on(dev);
2811 }
2812 priv->media_timer.expires = jiffies + HZ;
2813 add_timer(&priv->media_timer);
2814 }
2815
2816
2817 /*****************************************************************************
2818 ******************************************************************************
2819
2820 ThunderLAN driver MII routines
2821
2822 these routines are based on the information in chap. 2 of the
2823 "ThunderLAN Programmer's Guide", pp. 15-24.
2824
2825 ******************************************************************************
2826 *****************************************************************************/
2827
2828
2829 /***************************************************************
2830 * tlan_mii_read_reg
2831 *
2832 * Returns:
2833 * false if ack received ok
2834 * true if no ack received or other error
2835 *
2836 * Parms:
2837 * dev The device structure containing
2838 * The io address and interrupt count
2839 * for this device.
2840 * phy The address of the PHY to be queried.
2841 * reg The register whose contents are to be
2842 * retrieved.
2843 * val A pointer to a variable to store the
2844 * retrieved value.
2845 *
2846 * This function uses the TLAN's MII bus to retrieve the contents
2847 * of a given register on a PHY. It sends the appropriate info
2848 * and then reads the 16-bit register value from the MII bus via
2849 * the TLAN SIO register.
2850 *
2851 **************************************************************/
2852
2853 static bool
2854 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2855 {
2856 u8 nack;
2857 u16 sio, tmp;
2858 u32 i;
2859 bool err;
2860 int minten;
2861 struct tlan_priv *priv = netdev_priv(dev);
2862 unsigned long flags = 0;
2863
2864 err = false;
2865 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2866 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2867
2868 if (!in_irq())
2869 spin_lock_irqsave(&priv->lock, flags);
2870
2871 tlan_mii_sync(dev->base_addr);
2872
2873 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2874 if (minten)
2875 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2876
2877 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2878 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2879 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2880 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2881
2882
2883 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2884
2885 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2886 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2887 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2888
2889 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2890 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2891 if (nack) { /* no ACK, so fake it */
2892 for (i = 0; i < 16; i++) {
2893 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2894 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2895 }
2896 tmp = 0xffff;
2897 err = true;
2898 } else { /* ACK, so read data */
2899 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2900 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2901 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2902 tmp |= i;
2903 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2904 }
2905 }
2906
2907
2908 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2909 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2910
2911 if (minten)
2912 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2913
2914 *val = tmp;
2915
2916 if (!in_irq())
2917 spin_unlock_irqrestore(&priv->lock, flags);
2918
2919 return err;
2920
2921 }
2922
2923
2924
2925
2926 /***************************************************************
2927 * tlan_mii_send_data
2928 *
2929 * Returns:
2930 * Nothing
2931 * Parms:
2932 * base_port The base IO port of the adapter in
2933 * question.
2934 * dev The address of the PHY to be queried.
2935 * data The value to be placed on the MII bus.
2936 * num_bits The number of bits in data that are to
2937 * be placed on the MII bus.
2938 *
2939 * This function sends on sequence of bits on the MII
2940 * configuration bus.
2941 *
2942 **************************************************************/
2943
2944 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2945 {
2946 u16 sio;
2947 u32 i;
2948
2949 if (num_bits == 0)
2950 return;
2951
2952 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2953 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2954 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2955
2956 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2957 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2958 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2959 if (data & i)
2960 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2961 else
2962 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2963 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2964 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2965 }
2966
2967 }
2968
2969
2970
2971
2972 /***************************************************************
2973 * TLan_MiiSync
2974 *
2975 * Returns:
2976 * Nothing
2977 * Parms:
2978 * base_port The base IO port of the adapter in
2979 * question.
2980 *
2981 * This functions syncs all PHYs in terms of the MII configuration
2982 * bus.
2983 *
2984 **************************************************************/
2985
2986 static void tlan_mii_sync(u16 base_port)
2987 {
2988 int i;
2989 u16 sio;
2990
2991 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2992 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2993
2994 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2995 for (i = 0; i < 32; i++) {
2996 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2997 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2998 }
2999
3000 }
3001
3002
3003
3004
3005 /***************************************************************
3006 * tlan_mii_write_reg
3007 *
3008 * Returns:
3009 * Nothing
3010 * Parms:
3011 * dev The device structure for the device
3012 * to write to.
3013 * phy The address of the PHY to be written to.
3014 * reg The register whose contents are to be
3015 * written.
3016 * val The value to be written to the register.
3017 *
3018 * This function uses the TLAN's MII bus to write the contents of a
3019 * given register on a PHY. It sends the appropriate info and then
3020 * writes the 16-bit register value from the MII configuration bus
3021 * via the TLAN SIO register.
3022 *
3023 **************************************************************/
3024
3025 static void
3026 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3027 {
3028 u16 sio;
3029 int minten;
3030 unsigned long flags = 0;
3031 struct tlan_priv *priv = netdev_priv(dev);
3032
3033 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3034 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3035
3036 if (!in_irq())
3037 spin_lock_irqsave(&priv->lock, flags);
3038
3039 tlan_mii_sync(dev->base_addr);
3040
3041 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3042 if (minten)
3043 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3044
3045 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3046 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3047 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3048 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3049
3050 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3051 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3052
3053 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3054 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3055
3056 if (minten)
3057 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3058
3059 if (!in_irq())
3060 spin_unlock_irqrestore(&priv->lock, flags);
3061
3062 }
3063
3064
3065
3066
3067 /*****************************************************************************
3068 ******************************************************************************
3069
3070 ThunderLAN driver eeprom routines
3071
3072 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3073 EEPROM. these functions are based on information in microchip's
3074 data sheet. I don't know how well this functions will work with
3075 other Eeproms.
3076
3077 ******************************************************************************
3078 *****************************************************************************/
3079
3080
3081 /***************************************************************
3082 * tlan_ee_send_start
3083 *
3084 * Returns:
3085 * Nothing
3086 * Parms:
3087 * io_base The IO port base address for the
3088 * TLAN device with the EEPROM to
3089 * use.
3090 *
3091 * This function sends a start cycle to an EEPROM attached
3092 * to a TLAN chip.
3093 *
3094 **************************************************************/
3095
3096 static void tlan_ee_send_start(u16 io_base)
3097 {
3098 u16 sio;
3099
3100 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3101 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3102
3103 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3104 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3105 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3106 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3107 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3108
3109 }
3110
3111
3112
3113
3114 /***************************************************************
3115 * tlan_ee_send_byte
3116 *
3117 * Returns:
3118 * If the correct ack was received, 0, otherwise 1
3119 * Parms: io_base The IO port base address for the
3120 * TLAN device with the EEPROM to
3121 * use.
3122 * data The 8 bits of information to
3123 * send to the EEPROM.
3124 * stop If TLAN_EEPROM_STOP is passed, a
3125 * stop cycle is sent after the
3126 * byte is sent after the ack is
3127 * read.
3128 *
3129 * This function sends a byte on the serial EEPROM line,
3130 * driving the clock to send each bit. The function then
3131 * reverses transmission direction and reads an acknowledge
3132 * bit.
3133 *
3134 **************************************************************/
3135
3136 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3137 {
3138 int err;
3139 u8 place;
3140 u16 sio;
3141
3142 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3143 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3144
3145 /* Assume clock is low, tx is enabled; */
3146 for (place = 0x80; place != 0; place >>= 1) {
3147 if (place & data)
3148 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3149 else
3150 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3151 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3152 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3153 }
3154 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3155 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3156 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3157 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3158 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3159
3160 if ((!err) && stop) {
3161 /* STOP, raise data while clock is high */
3162 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3163 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3164 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3165 }
3166
3167 return err;
3168
3169 }
3170
3171
3172
3173
3174 /***************************************************************
3175 * tlan_ee_receive_byte
3176 *
3177 * Returns:
3178 * Nothing
3179 * Parms:
3180 * io_base The IO port base address for the
3181 * TLAN device with the EEPROM to
3182 * use.
3183 * data An address to a char to hold the
3184 * data sent from the EEPROM.
3185 * stop If TLAN_EEPROM_STOP is passed, a
3186 * stop cycle is sent after the
3187 * byte is received, and no ack is
3188 * sent.
3189 *
3190 * This function receives 8 bits of data from the EEPROM
3191 * over the serial link. It then sends and ack bit, or no
3192 * ack and a stop bit. This function is used to retrieve
3193 * data after the address of a byte in the EEPROM has been
3194 * sent.
3195 *
3196 **************************************************************/
3197
3198 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3199 {
3200 u8 place;
3201 u16 sio;
3202
3203 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3204 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3205 *data = 0;
3206
3207 /* Assume clock is low, tx is enabled; */
3208 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3209 for (place = 0x80; place; place >>= 1) {
3210 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3211 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3212 *data |= place;
3213 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3214 }
3215
3216 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3217 if (!stop) {
3218 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3219 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3220 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3221 } else {
3222 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3223 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3224 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3225 /* STOP, raise data while clock is high */
3226 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3227 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3228 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3229 }
3230
3231 }
3232
3233
3234
3235
3236 /***************************************************************
3237 * tlan_ee_read_byte
3238 *
3239 * Returns:
3240 * No error = 0, else, the stage at which the error
3241 * occurred.
3242 * Parms:
3243 * io_base The IO port base address for the
3244 * TLAN device with the EEPROM to
3245 * use.
3246 * ee_addr The address of the byte in the
3247 * EEPROM whose contents are to be
3248 * retrieved.
3249 * data An address to a char to hold the
3250 * data obtained from the EEPROM.
3251 *
3252 * This function reads a byte of information from an byte
3253 * cell in the EEPROM.
3254 *
3255 **************************************************************/
3256
3257 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3258 {
3259 int err;
3260 struct tlan_priv *priv = netdev_priv(dev);
3261 unsigned long flags = 0;
3262 int ret = 0;
3263
3264 spin_lock_irqsave(&priv->lock, flags);
3265
3266 tlan_ee_send_start(dev->base_addr);
3267 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3268 if (err) {
3269 ret = 1;
3270 goto fail;
3271 }
3272 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3273 if (err) {
3274 ret = 2;
3275 goto fail;
3276 }
3277 tlan_ee_send_start(dev->base_addr);
3278 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3279 if (err) {
3280 ret = 3;
3281 goto fail;
3282 }
3283 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3284 fail:
3285 spin_unlock_irqrestore(&priv->lock, flags);
3286
3287 return ret;
3288
3289 }
3290
3291
3292
Linux kernel - Deliverables
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