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sfc: Don't use enums as a bitmask.
[zen-stable.git] / drivers / net / tlan.c
blobace6404e2fac4b886cd64930a24103fd3f4f1efc
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/module.h>
33 #include <linux/init.h>
34 #include <linux/ioport.h>
35 #include <linux/eisa.h>
36 #include <linux/pci.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/netdevice.h>
39 #include <linux/etherdevice.h>
40 #include <linux/delay.h>
41 #include <linux/spinlock.h>
42 #include <linux/workqueue.h>
43 #include <linux/mii.h>
44
45 #include "tlan.h"
46
47
48 /* For removing EISA devices */
49 static struct net_device *tlan_eisa_devices;
50
51 static int tlan_devices_installed;
52
53 /* Set speed, duplex and aui settings */
54 static int aui[MAX_TLAN_BOARDS];
55 static int duplex[MAX_TLAN_BOARDS];
56 static int speed[MAX_TLAN_BOARDS];
57 static int boards_found;
58 module_param_array(aui, int, NULL, 0);
59 module_param_array(duplex, int, NULL, 0);
60 module_param_array(speed, int, NULL, 0);
61 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
62 MODULE_PARM_DESC(duplex,
63 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
64 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
65
66 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
67 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
68 MODULE_LICENSE("GPL");
69
70
71 /* Define this to enable Link beat monitoring */
72 #undef MONITOR
73
74 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
75 static int debug;
76 module_param(debug, int, 0);
77 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
78
79 static const char tlan_signature[] = "TLAN";
80 static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
81 static int tlan_have_pci;
82 static int tlan_have_eisa;
83
84 static const char * const media[] = {
85 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
86 "100BaseTx-FD", "100BaseT4", NULL
87 };
88
89 static struct board {
90 const char *device_label;
91 u32 flags;
92 u16 addr_ofs;
93 } board_info[] = {
94 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
95 { "Compaq Netelligent 10/100 TX PCI UTP",
96 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
97 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
98 { "Compaq NetFlex-3/P",
99 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
100 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
101 { "Compaq Netelligent Integrated 10/100 TX UTP",
102 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
103 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
104 TLAN_ADAPTER_NONE, 0x83 },
105 { "Compaq Netelligent 10/100 TX Embedded UTP",
106 TLAN_ADAPTER_NONE, 0x83 },
107 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
108 { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
109 { "Olicom OC-2326", 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 DEFINE_PCI_DEVICE_TABLE(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 #ifdef MONITOR
194 static void tlan_phy_monitor(struct net_device *);
195 #endif
196
197 /*
198 static int tlan_phy_nop(struct net_device *);
199 static int tlan_phy_internal_check(struct net_device *);
200 static int tlan_phy_internal_service(struct net_device *);
201 static int tlan_phy_dp83840a_check(struct net_device *);
202 */
203
204 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
205 static void tlan_mii_send_data(u16, u32, unsigned);
206 static void tlan_mii_sync(u16);
207 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
208
209 static void tlan_ee_send_start(u16);
210 static int tlan_ee_send_byte(u16, u8, int);
211 static void tlan_ee_receive_byte(u16, u8 *, int);
212 static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
213
214
215 static inline void
216 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
217 {
218 unsigned long addr = (unsigned long)skb;
219 tag->buffer[9].address = addr;
220 tag->buffer[8].address = upper_32_bits(addr);
221 }
222
223 static inline struct sk_buff *
224 tlan_get_skb(const struct tlan_list *tag)
225 {
226 unsigned long addr;
227
228 addr = tag->buffer[9].address;
229 addr |= (tag->buffer[8].address << 16) << 16;
230 return (struct sk_buff *) addr;
231 }
232
233 static u32
234 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
235 NULL,
236 tlan_handle_tx_eof,
237 tlan_handle_stat_overflow,
238 tlan_handle_rx_eof,
239 tlan_handle_dummy,
240 tlan_handle_tx_eoc,
241 tlan_handle_status_check,
242 tlan_handle_rx_eoc
243 };
244
245 static inline void
246 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
247 {
248 struct tlan_priv *priv = netdev_priv(dev);
249 unsigned long flags = 0;
250
251 if (!in_irq())
252 spin_lock_irqsave(&priv->lock, flags);
253 if (priv->timer.function != NULL &&
254 priv->timer_type != TLAN_TIMER_ACTIVITY) {
255 if (!in_irq())
256 spin_unlock_irqrestore(&priv->lock, flags);
257 return;
258 }
259 priv->timer.function = tlan_timer;
260 if (!in_irq())
261 spin_unlock_irqrestore(&priv->lock, flags);
262
263 priv->timer.data = (unsigned long) dev;
264 priv->timer_set_at = jiffies;
265 priv->timer_type = type;
266 mod_timer(&priv->timer, jiffies + ticks);
267
268 }
269
270
271 /*****************************************************************************
272 ******************************************************************************
273
274 ThunderLAN driver primary functions
275
276 these functions are more or less common to all linux network drivers.
277
278 ******************************************************************************
279 *****************************************************************************/
280
281
282
283
284
285 /***************************************************************
286 * tlan_remove_one
287 *
288 * Returns:
289 * Nothing
290 * Parms:
291 * None
292 *
293 * Goes through the TLanDevices list and frees the device
294 * structs and memory associated with each device (lists
295 * and buffers). It also ureserves the IO port regions
296 * associated with this device.
297 *
298 **************************************************************/
299
300
301 static void __devexit tlan_remove_one(struct pci_dev *pdev)
302 {
303 struct net_device *dev = pci_get_drvdata(pdev);
304 struct tlan_priv *priv = netdev_priv(dev);
305
306 unregister_netdev(dev);
307
308 if (priv->dma_storage) {
309 pci_free_consistent(priv->pci_dev,
310 priv->dma_size, priv->dma_storage,
311 priv->dma_storage_dma);
312 }
313
314 #ifdef CONFIG_PCI
315 pci_release_regions(pdev);
316 #endif
317
318 free_netdev(dev);
319
320 pci_set_drvdata(pdev, NULL);
321 }
322
323 static void tlan_start(struct net_device *dev)
324 {
325 tlan_reset_lists(dev);
326 /* NOTE: It might not be necessary to read the stats before a
327 reset if you don't care what the values are.
328 */
329 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
330 tlan_reset_adapter(dev);
331 netif_wake_queue(dev);
332 }
333
334 static void tlan_stop(struct net_device *dev)
335 {
336 struct tlan_priv *priv = netdev_priv(dev);
337
338 tlan_read_and_clear_stats(dev, TLAN_RECORD);
339 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
340 /* Reset and power down phy */
341 tlan_reset_adapter(dev);
342 if (priv->timer.function != NULL) {
343 del_timer_sync(&priv->timer);
344 priv->timer.function = NULL;
345 }
346 }
347
348 #ifdef CONFIG_PM
349
350 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
351 {
352 struct net_device *dev = pci_get_drvdata(pdev);
353
354 if (netif_running(dev))
355 tlan_stop(dev);
356
357 netif_device_detach(dev);
358 pci_save_state(pdev);
359 pci_disable_device(pdev);
360 pci_wake_from_d3(pdev, false);
361 pci_set_power_state(pdev, PCI_D3hot);
362
363 return 0;
364 }
365
366 static int tlan_resume(struct pci_dev *pdev)
367 {
368 struct net_device *dev = pci_get_drvdata(pdev);
369
370 pci_set_power_state(pdev, PCI_D0);
371 pci_restore_state(pdev);
372 pci_enable_wake(pdev, 0, 0);
373 netif_device_attach(dev);
374
375 if (netif_running(dev))
376 tlan_start(dev);
377
378 return 0;
379 }
380
381 #else /* CONFIG_PM */
382
383 #define tlan_suspend NULL
384 #define tlan_resume NULL
385
386 #endif /* CONFIG_PM */
387
388
389 static struct pci_driver tlan_driver = {
390 .name = "tlan",
391 .id_table = tlan_pci_tbl,
392 .probe = tlan_init_one,
393 .remove = __devexit_p(tlan_remove_one),
394 .suspend = tlan_suspend,
395 .resume = tlan_resume,
396 };
397
398 static int __init tlan_probe(void)
399 {
400 int rc = -ENODEV;
401
402 pr_info("%s", tlan_banner);
403
404 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
405
406 /* Use new style PCI probing. Now the kernel will
407 do most of this for us */
408 rc = pci_register_driver(&tlan_driver);
409
410 if (rc != 0) {
411 pr_err("Could not register pci driver\n");
412 goto err_out_pci_free;
413 }
414
415 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
416 tlan_eisa_probe();
417
418 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
419 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
420 tlan_have_pci, tlan_have_eisa);
421
422 if (tlan_devices_installed == 0) {
423 rc = -ENODEV;
424 goto err_out_pci_unreg;
425 }
426 return 0;
427
428 err_out_pci_unreg:
429 pci_unregister_driver(&tlan_driver);
430 err_out_pci_free:
431 return rc;
432 }
433
434
435 static int __devinit tlan_init_one(struct pci_dev *pdev,
436 const struct pci_device_id *ent)
437 {
438 return tlan_probe1(pdev, -1, -1, 0, ent);
439 }
440
441
442 /*
443 ***************************************************************
444 * tlan_probe1
445 *
446 * Returns:
447 * 0 on success, error code on error
448 * Parms:
449 * none
450 *
451 * The name is lower case to fit in with all the rest of
452 * the netcard_probe names. This function looks for
453 * another TLan based adapter, setting it up with the
454 * allocated device struct if one is found.
455 * tlan_probe has been ported to the new net API and
456 * now allocates its own device structure. This function
457 * is also used by modules.
458 *
459 **************************************************************/
460
461 static int __devinit tlan_probe1(struct pci_dev *pdev,
462 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 pr_err("Could not allocate memory for device\n");
488 rc = -ENOMEM;
489 goto err_out_regions;
490 }
491 SET_NETDEV_DEV(dev, &pdev->dev);
492
493 priv = netdev_priv(dev);
494
495 priv->pci_dev = pdev;
496 priv->dev = dev;
497
498 /* Is this a PCI device? */
499 if (pdev) {
500 u32 pci_io_base = 0;
501
502 priv->adapter = &board_info[ent->driver_data];
503
504 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
505 if (rc) {
506 pr_err("No suitable PCI mapping available\n");
507 goto err_out_free_dev;
508 }
509
510 for (reg = 0; reg <= 5; reg++) {
511 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
512 pci_io_base = pci_resource_start(pdev, reg);
513 TLAN_DBG(TLAN_DEBUG_GNRL,
514 "IO mapping is available at %x.\n",
515 pci_io_base);
516 break;
517 }
518 }
519 if (!pci_io_base) {
520 pr_err("No IO mappings available\n");
521 rc = -EIO;
522 goto err_out_free_dev;
523 }
524
525 dev->base_addr = pci_io_base;
526 dev->irq = pdev->irq;
527 priv->adapter_rev = pdev->revision;
528 pci_set_master(pdev);
529 pci_set_drvdata(pdev, dev);
530
531 } else { /* EISA card */
532 /* This is a hack. We need to know which board structure
533 * is suited for this adapter */
534 device_id = inw(ioaddr + EISA_ID2);
535 priv->is_eisa = 1;
536 if (device_id == 0x20F1) {
537 priv->adapter = &board_info[13]; /* NetFlex-3/E */
538 priv->adapter_rev = 23; /* TLAN 2.3 */
539 } else {
540 priv->adapter = &board_info[14];
541 priv->adapter_rev = 10; /* TLAN 1.0 */
542 }
543 dev->base_addr = ioaddr;
544 dev->irq = irq;
545 }
546
547 /* Kernel parameters */
548 if (dev->mem_start) {
549 priv->aui = dev->mem_start & 0x01;
550 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
551 : (dev->mem_start & 0x06) >> 1;
552 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
553 : (dev->mem_start & 0x18) >> 3;
554
555 if (priv->speed == 0x1)
556 priv->speed = TLAN_SPEED_10;
557 else if (priv->speed == 0x2)
558 priv->speed = TLAN_SPEED_100;
559
560 debug = priv->debug = dev->mem_end;
561 } else {
562 priv->aui = aui[boards_found];
563 priv->speed = speed[boards_found];
564 priv->duplex = duplex[boards_found];
565 priv->debug = debug;
566 }
567
568 /* This will be used when we get an adapter error from
569 * within our irq handler */
570 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
571
572 spin_lock_init(&priv->lock);
573
574 rc = tlan_init(dev);
575 if (rc) {
576 pr_err("Could not set up device\n");
577 goto err_out_free_dev;
578 }
579
580 rc = register_netdev(dev);
581 if (rc) {
582 pr_err("Could not register device\n");
583 goto err_out_uninit;
584 }
585
586
587 tlan_devices_installed++;
588 boards_found++;
589
590 /* pdev is NULL if this is an EISA device */
591 if (pdev)
592 tlan_have_pci++;
593 else {
594 priv->next_device = tlan_eisa_devices;
595 tlan_eisa_devices = dev;
596 tlan_have_eisa++;
597 }
598
599 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
600 (int)dev->irq,
601 (int)dev->base_addr,
602 priv->adapter->device_label,
603 priv->adapter_rev);
604 return 0;
605
606 err_out_uninit:
607 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
608 priv->dma_storage_dma);
609 err_out_free_dev:
610 free_netdev(dev);
611 err_out_regions:
612 #ifdef CONFIG_PCI
613 if (pdev)
614 pci_release_regions(pdev);
615 #endif
616 err_out:
617 if (pdev)
618 pci_disable_device(pdev);
619 return rc;
620 }
621
622
623 static void tlan_eisa_cleanup(void)
624 {
625 struct net_device *dev;
626 struct tlan_priv *priv;
627
628 while (tlan_have_eisa) {
629 dev = tlan_eisa_devices;
630 priv = netdev_priv(dev);
631 if (priv->dma_storage) {
632 pci_free_consistent(priv->pci_dev, priv->dma_size,
633 priv->dma_storage,
634 priv->dma_storage_dma);
635 }
636 release_region(dev->base_addr, 0x10);
637 unregister_netdev(dev);
638 tlan_eisa_devices = priv->next_device;
639 free_netdev(dev);
640 tlan_have_eisa--;
641 }
642 }
643
644
645 static void __exit tlan_exit(void)
646 {
647 pci_unregister_driver(&tlan_driver);
648
649 if (tlan_have_eisa)
650 tlan_eisa_cleanup();
651
652 }
653
654
655 /* Module loading/unloading */
656 module_init(tlan_probe);
657 module_exit(tlan_exit);
658
659
660
661 /**************************************************************
662 * tlan_eisa_probe
663 *
664 * Returns: 0 on success, 1 otherwise
665 *
666 * Parms: None
667 *
668 *
669 * This functions probes for EISA devices and calls
670 * TLan_probe1 when one is found.
671 *
672 *************************************************************/
673
674 static void __init tlan_eisa_probe(void)
675 {
676 long ioaddr;
677 int rc = -ENODEV;
678 int irq;
679 u16 device_id;
680
681 if (!EISA_bus) {
682 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
683 return;
684 }
685
686 /* Loop through all slots of the EISA bus */
687 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
688
689 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
690 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
691 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
692 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
693
694
695 TLAN_DBG(TLAN_DEBUG_PROBE,
696 "Probing for EISA adapter at IO: 0x%4x : ",
697 (int) ioaddr);
698 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
699 goto out;
700
701 if (inw(ioaddr + EISA_ID) != 0x110E) {
702 release_region(ioaddr, 0x10);
703 goto out;
704 }
705
706 device_id = inw(ioaddr + EISA_ID2);
707 if (device_id != 0x20F1 && device_id != 0x40F1) {
708 release_region(ioaddr, 0x10);
709 goto out;
710 }
711
712 /* check if adapter is enabled */
713 if (inb(ioaddr + EISA_CR) != 0x1) {
714 release_region(ioaddr, 0x10);
715 goto out2;
716 }
717
718 if (debug == 0x10)
719 pr_info("Found one\n");
720
721
722 /* Get irq from board */
723 switch (inb(ioaddr + 0xcc0)) {
724 case(0x10):
725 irq = 5;
726 break;
727 case(0x20):
728 irq = 9;
729 break;
730 case(0x40):
731 irq = 10;
732 break;
733 case(0x80):
734 irq = 11;
735 break;
736 default:
737 goto out;
738 }
739
740
741 /* Setup the newly found eisa adapter */
742 rc = tlan_probe1(NULL, ioaddr, irq,
743 12, NULL);
744 continue;
745
746 out:
747 if (debug == 0x10)
748 pr_info("None found\n");
749 continue;
750
751 out2:
752 if (debug == 0x10)
753 pr_info("Card found but it is not enabled, skipping\n");
754 continue;
755
756 }
757
758 }
759
760 #ifdef CONFIG_NET_POLL_CONTROLLER
761 static void tlan_poll(struct net_device *dev)
762 {
763 disable_irq(dev->irq);
764 tlan_handle_interrupt(dev->irq, dev);
765 enable_irq(dev->irq);
766 }
767 #endif
768
769 static const struct net_device_ops tlan_netdev_ops = {
770 .ndo_open = tlan_open,
771 .ndo_stop = tlan_close,
772 .ndo_start_xmit = tlan_start_tx,
773 .ndo_tx_timeout = tlan_tx_timeout,
774 .ndo_get_stats = tlan_get_stats,
775 .ndo_set_multicast_list = tlan_set_multicast_list,
776 .ndo_do_ioctl = tlan_ioctl,
777 .ndo_change_mtu = eth_change_mtu,
778 .ndo_set_mac_address = eth_mac_addr,
779 .ndo_validate_addr = eth_validate_addr,
780 #ifdef CONFIG_NET_POLL_CONTROLLER
781 .ndo_poll_controller = tlan_poll,
782 #endif
783 };
784
785
786
787 /***************************************************************
788 * tlan_init
789 *
790 * Returns:
791 * 0 on success, error code otherwise.
792 * Parms:
793 * dev The structure of the device to be
794 * init'ed.
795 *
796 * This function completes the initialization of the
797 * device structure and driver. It reserves the IO
798 * addresses, allocates memory for the lists and bounce
799 * buffers, retrieves the MAC address from the eeprom
800 * and assignes the device's methods.
801 *
802 **************************************************************/
803
804 static int tlan_init(struct net_device *dev)
805 {
806 int dma_size;
807 int err;
808 int i;
809 struct tlan_priv *priv;
810
811 priv = netdev_priv(dev);
812
813 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
814 * (sizeof(struct tlan_list));
815 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
816 dma_size,
817 &priv->dma_storage_dma);
818 priv->dma_size = dma_size;
819
820 if (priv->dma_storage == NULL) {
821 pr_err("Could not allocate lists and buffers for %s\n",
822 dev->name);
823 return -ENOMEM;
824 }
825 memset(priv->dma_storage, 0, dma_size);
826 priv->rx_list = (struct tlan_list *)
827 ALIGN((unsigned long)priv->dma_storage, 8);
828 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
829 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
830 priv->tx_list_dma =
831 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
832
833 err = 0;
834 for (i = 0; i < 6 ; i++)
835 err |= tlan_ee_read_byte(dev,
836 (u8) priv->adapter->addr_ofs + i,
837 (u8 *) &dev->dev_addr[i]);
838 if (err) {
839 pr_err("%s: Error reading MAC from eeprom: %d\n",
840 dev->name, err);
841 }
842 dev->addr_len = 6;
843
844 netif_carrier_off(dev);
845
846 /* Device methods */
847 dev->netdev_ops = &tlan_netdev_ops;
848 dev->watchdog_timeo = TX_TIMEOUT;
849
850 return 0;
851
852 }
853
854
855
856
857 /***************************************************************
858 * tlan_open
859 *
860 * Returns:
861 * 0 on success, error code otherwise.
862 * Parms:
863 * dev Structure of device to be opened.
864 *
865 * This routine puts the driver and TLAN adapter in a
866 * state where it is ready to send and receive packets.
867 * It allocates the IRQ, resets and brings the adapter
868 * out of reset, and allows interrupts. It also delays
869 * the startup for autonegotiation or sends a Rx GO
870 * command to the adapter, as appropriate.
871 *
872 **************************************************************/
873
874 static int tlan_open(struct net_device *dev)
875 {
876 struct tlan_priv *priv = netdev_priv(dev);
877 int err;
878
879 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
880 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
881 dev->name, dev);
882
883 if (err) {
884 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
885 dev->irq);
886 return err;
887 }
888
889 init_timer(&priv->timer);
890
891 tlan_start(dev);
892
893 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
894 dev->name, priv->tlan_rev);
895
896 return 0;
897
898 }
899
900
901
902 /**************************************************************
903 * tlan_ioctl
904 *
905 * Returns:
906 * 0 on success, error code otherwise
907 * Params:
908 * dev structure of device to receive ioctl.
909 *
910 * rq ifreq structure to hold userspace data.
911 *
912 * cmd ioctl command.
913 *
914 *
915 *************************************************************/
916
917 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
918 {
919 struct tlan_priv *priv = netdev_priv(dev);
920 struct mii_ioctl_data *data = if_mii(rq);
921 u32 phy = priv->phy[priv->phy_num];
922
923 if (!priv->phy_online)
924 return -EAGAIN;
925
926 switch (cmd) {
927 case SIOCGMIIPHY: /* get address of MII PHY in use. */
928 data->phy_id = phy;
929
930
931 case SIOCGMIIREG: /* read MII PHY register. */
932 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
933 data->reg_num & 0x1f, &data->val_out);
934 return 0;
935
936
937 case SIOCSMIIREG: /* write MII PHY register. */
938 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
939 data->reg_num & 0x1f, data->val_in);
940 return 0;
941 default:
942 return -EOPNOTSUPP;
943 }
944 }
945
946
947 /***************************************************************
948 * tlan_tx_timeout
949 *
950 * Returns: nothing
951 *
952 * Params:
953 * dev structure of device which timed out
954 * during transmit.
955 *
956 **************************************************************/
957
958 static void tlan_tx_timeout(struct net_device *dev)
959 {
960
961 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
962
963 /* Ok so we timed out, lets see what we can do about it...*/
964 tlan_free_lists(dev);
965 tlan_reset_lists(dev);
966 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
967 tlan_reset_adapter(dev);
968 dev->trans_start = jiffies; /* prevent tx timeout */
969 netif_wake_queue(dev);
970
971 }
972
973
974 /***************************************************************
975 * tlan_tx_timeout_work
976 *
977 * Returns: nothing
978 *
979 * Params:
980 * work work item of device which timed out
981 *
982 **************************************************************/
983
984 static void tlan_tx_timeout_work(struct work_struct *work)
985 {
986 struct tlan_priv *priv =
987 container_of(work, struct tlan_priv, tlan_tqueue);
988
989 tlan_tx_timeout(priv->dev);
990 }
991
992
993
994 /***************************************************************
995 * tlan_start_tx
996 *
997 * Returns:
998 * 0 on success, non-zero on failure.
999 * Parms:
1000 * skb A pointer to the sk_buff containing the
1001 * frame to be sent.
1002 * dev The device to send the data on.
1003 *
1004 * This function adds a frame to the Tx list to be sent
1005 * ASAP. First it verifies that the adapter is ready and
1006 * there is room in the queue. Then it sets up the next
1007 * available list, copies the frame to the corresponding
1008 * buffer. If the adapter Tx channel is idle, it gives
1009 * the adapter a Tx Go command on the list, otherwise it
1010 * sets the forward address of the previous list to point
1011 * to this one. Then it frees the sk_buff.
1012 *
1013 **************************************************************/
1014
1015 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1016 {
1017 struct tlan_priv *priv = netdev_priv(dev);
1018 dma_addr_t tail_list_phys;
1019 struct tlan_list *tail_list;
1020 unsigned long flags;
1021 unsigned int txlen;
1022
1023 if (!priv->phy_online) {
1024 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1025 dev->name);
1026 dev_kfree_skb_any(skb);
1027 return NETDEV_TX_OK;
1028 }
1029
1030 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1031 return NETDEV_TX_OK;
1032 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1033
1034 tail_list = priv->tx_list + priv->tx_tail;
1035 tail_list_phys =
1036 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1037
1038 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1039 TLAN_DBG(TLAN_DEBUG_TX,
1040 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1041 dev->name, priv->tx_head, priv->tx_tail);
1042 netif_stop_queue(dev);
1043 priv->tx_busy_count++;
1044 return NETDEV_TX_BUSY;
1045 }
1046
1047 tail_list->forward = 0;
1048
1049 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1050 skb->data, txlen,
1051 PCI_DMA_TODEVICE);
1052 tlan_store_skb(tail_list, skb);
1053
1054 tail_list->frame_size = (u16) txlen;
1055 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1056 tail_list->buffer[1].count = 0;
1057 tail_list->buffer[1].address = 0;
1058
1059 spin_lock_irqsave(&priv->lock, flags);
1060 tail_list->c_stat = TLAN_CSTAT_READY;
1061 if (!priv->tx_in_progress) {
1062 priv->tx_in_progress = 1;
1063 TLAN_DBG(TLAN_DEBUG_TX,
1064 "TRANSMIT: Starting TX on buffer %d\n",
1065 priv->tx_tail);
1066 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1067 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1068 } else {
1069 TLAN_DBG(TLAN_DEBUG_TX,
1070 "TRANSMIT: Adding buffer %d to TX channel\n",
1071 priv->tx_tail);
1072 if (priv->tx_tail == 0) {
1073 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1074 = tail_list_phys;
1075 } else {
1076 (priv->tx_list + (priv->tx_tail - 1))->forward
1077 = tail_list_phys;
1078 }
1079 }
1080 spin_unlock_irqrestore(&priv->lock, flags);
1081
1082 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1083
1084 return NETDEV_TX_OK;
1085
1086 }
1087
1088
1089
1090
1091 /***************************************************************
1092 * tlan_handle_interrupt
1093 *
1094 * Returns:
1095 * Nothing
1096 * Parms:
1097 * irq The line on which the interrupt
1098 * occurred.
1099 * dev_id A pointer to the device assigned to
1100 * this irq line.
1101 *
1102 * This function handles an interrupt generated by its
1103 * assigned TLAN adapter. The function deactivates
1104 * interrupts on its adapter, records the type of
1105 * interrupt, executes the appropriate subhandler, and
1106 * acknowdges the interrupt to the adapter (thus
1107 * re-enabling adapter interrupts.
1108 *
1109 **************************************************************/
1110
1111 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1112 {
1113 struct net_device *dev = dev_id;
1114 struct tlan_priv *priv = netdev_priv(dev);
1115 u16 host_int;
1116 u16 type;
1117
1118 spin_lock(&priv->lock);
1119
1120 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1121 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1122 if (type) {
1123 u32 ack;
1124 u32 host_cmd;
1125
1126 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1127 ack = tlan_int_vector[type](dev, host_int);
1128
1129 if (ack) {
1130 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1131 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1132 }
1133 }
1134
1135 spin_unlock(&priv->lock);
1136
1137 return IRQ_RETVAL(type);
1138 }
1139
1140
1141
1142
1143 /***************************************************************
1144 * tlan_close
1145 *
1146 * Returns:
1147 * An error code.
1148 * Parms:
1149 * dev The device structure of the device to
1150 * close.
1151 *
1152 * This function shuts down the adapter. It records any
1153 * stats, puts the adapter into reset state, deactivates
1154 * its time as needed, and frees the irq it is using.
1155 *
1156 **************************************************************/
1157
1158 static int tlan_close(struct net_device *dev)
1159 {
1160 struct tlan_priv *priv = netdev_priv(dev);
1161
1162 priv->neg_be_verbose = 0;
1163 tlan_stop(dev);
1164
1165 free_irq(dev->irq, dev);
1166 tlan_free_lists(dev);
1167 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1168
1169 return 0;
1170
1171 }
1172
1173
1174
1175
1176 /***************************************************************
1177 * tlan_get_stats
1178 *
1179 * Returns:
1180 * A pointer to the device's statistics structure.
1181 * Parms:
1182 * dev The device structure to return the
1183 * stats for.
1184 *
1185 * This function updates the devices statistics by reading
1186 * the TLAN chip's onboard registers. Then it returns the
1187 * address of the statistics structure.
1188 *
1189 **************************************************************/
1190
1191 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1192 {
1193 struct tlan_priv *priv = netdev_priv(dev);
1194 int i;
1195
1196 /* Should only read stats if open ? */
1197 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1198
1199 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1200 priv->rx_eoc_count);
1201 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1202 priv->tx_busy_count);
1203 if (debug & TLAN_DEBUG_GNRL) {
1204 tlan_print_dio(dev->base_addr);
1205 tlan_phy_print(dev);
1206 }
1207 if (debug & TLAN_DEBUG_LIST) {
1208 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1209 tlan_print_list(priv->rx_list + i, "RX", i);
1210 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1211 tlan_print_list(priv->tx_list + i, "TX", i);
1212 }
1213
1214 return &dev->stats;
1215
1216 }
1217
1218
1219
1220
1221 /***************************************************************
1222 * tlan_set_multicast_list
1223 *
1224 * Returns:
1225 * Nothing
1226 * Parms:
1227 * dev The device structure to set the
1228 * multicast list for.
1229 *
1230 * This function sets the TLAN adaptor to various receive
1231 * modes. If the IFF_PROMISC flag is set, promiscuous
1232 * mode is acitviated. Otherwise, promiscuous mode is
1233 * turned off. If the IFF_ALLMULTI flag is set, then
1234 * the hash table is set to receive all group addresses.
1235 * Otherwise, the first three multicast addresses are
1236 * stored in AREG_1-3, and the rest are selected via the
1237 * hash table, as necessary.
1238 *
1239 **************************************************************/
1240
1241 static void tlan_set_multicast_list(struct net_device *dev)
1242 {
1243 struct netdev_hw_addr *ha;
1244 u32 hash1 = 0;
1245 u32 hash2 = 0;
1246 int i;
1247 u32 offset;
1248 u8 tmp;
1249
1250 if (dev->flags & IFF_PROMISC) {
1251 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1252 tlan_dio_write8(dev->base_addr,
1253 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1254 } else {
1255 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1256 tlan_dio_write8(dev->base_addr,
1257 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1258 if (dev->flags & IFF_ALLMULTI) {
1259 for (i = 0; i < 3; i++)
1260 tlan_set_mac(dev, i + 1, NULL);
1261 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1262 0xffffffff);
1263 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1264 0xffffffff);
1265 } else {
1266 i = 0;
1267 netdev_for_each_mc_addr(ha, dev) {
1268 if (i < 3) {
1269 tlan_set_mac(dev, i + 1,
1270 (char *) &ha->addr);
1271 } else {
1272 offset =
1273 tlan_hash_func((u8 *)&ha->addr);
1274 if (offset < 32)
1275 hash1 |= (1 << offset);
1276 else
1277 hash2 |= (1 << (offset - 32));
1278 }
1279 i++;
1280 }
1281 for ( ; i < 3; i++)
1282 tlan_set_mac(dev, i + 1, NULL);
1283 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1284 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1285 }
1286 }
1287
1288 }
1289
1290
1291
1292 /*****************************************************************************
1293 ******************************************************************************
1294
1295 ThunderLAN driver interrupt vectors and table
1296
1297 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1298 Programmer's Guide" for more informations on handling interrupts
1299 generated by TLAN based adapters.
1300
1301 ******************************************************************************
1302 *****************************************************************************/
1303
1304
1305
1306
1307 /***************************************************************
1308 * tlan_handle_tx_eof
1309 *
1310 * Returns:
1311 * 1
1312 * Parms:
1313 * dev Device assigned the IRQ that was
1314 * raised.
1315 * host_int The contents of the HOST_INT
1316 * port.
1317 *
1318 * This function handles Tx EOF interrupts which are raised
1319 * by the adapter when it has completed sending the
1320 * contents of a buffer. If detemines which list/buffer
1321 * was completed and resets it. If the buffer was the last
1322 * in the channel (EOC), then the function checks to see if
1323 * another buffer is ready to send, and if so, sends a Tx
1324 * Go command. Finally, the driver activates/continues the
1325 * activity LED.
1326 *
1327 **************************************************************/
1328
1329 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1330 {
1331 struct tlan_priv *priv = netdev_priv(dev);
1332 int eoc = 0;
1333 struct tlan_list *head_list;
1334 dma_addr_t head_list_phys;
1335 u32 ack = 0;
1336 u16 tmp_c_stat;
1337
1338 TLAN_DBG(TLAN_DEBUG_TX,
1339 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1340 priv->tx_head, priv->tx_tail);
1341 head_list = priv->tx_list + priv->tx_head;
1342
1343 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1344 && (ack < 255)) {
1345 struct sk_buff *skb = tlan_get_skb(head_list);
1346
1347 ack++;
1348 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1349 max(skb->len,
1350 (unsigned int)TLAN_MIN_FRAME_SIZE),
1351 PCI_DMA_TODEVICE);
1352 dev_kfree_skb_any(skb);
1353 head_list->buffer[8].address = 0;
1354 head_list->buffer[9].address = 0;
1355
1356 if (tmp_c_stat & TLAN_CSTAT_EOC)
1357 eoc = 1;
1358
1359 dev->stats.tx_bytes += head_list->frame_size;
1360
1361 head_list->c_stat = TLAN_CSTAT_UNUSED;
1362 netif_start_queue(dev);
1363 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1364 head_list = priv->tx_list + priv->tx_head;
1365 }
1366
1367 if (!ack)
1368 netdev_info(dev,
1369 "Received interrupt for uncompleted TX frame\n");
1370
1371 if (eoc) {
1372 TLAN_DBG(TLAN_DEBUG_TX,
1373 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1374 priv->tx_head, priv->tx_tail);
1375 head_list = priv->tx_list + priv->tx_head;
1376 head_list_phys = priv->tx_list_dma
1377 + sizeof(struct tlan_list)*priv->tx_head;
1378 if ((head_list->c_stat & TLAN_CSTAT_READY)
1379 == TLAN_CSTAT_READY) {
1380 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1381 ack |= TLAN_HC_GO;
1382 } else {
1383 priv->tx_in_progress = 0;
1384 }
1385 }
1386
1387 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1388 tlan_dio_write8(dev->base_addr,
1389 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1390 if (priv->timer.function == NULL) {
1391 priv->timer.function = tlan_timer;
1392 priv->timer.data = (unsigned long) dev;
1393 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1394 priv->timer_set_at = jiffies;
1395 priv->timer_type = TLAN_TIMER_ACTIVITY;
1396 add_timer(&priv->timer);
1397 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1398 priv->timer_set_at = jiffies;
1399 }
1400 }
1401
1402 return ack;
1403
1404 }
1405
1406
1407
1408
1409 /***************************************************************
1410 * TLan_HandleStatOverflow
1411 *
1412 * Returns:
1413 * 1
1414 * Parms:
1415 * dev Device assigned the IRQ that was
1416 * raised.
1417 * host_int The contents of the HOST_INT
1418 * port.
1419 *
1420 * This function handles the Statistics Overflow interrupt
1421 * which means that one or more of the TLAN statistics
1422 * registers has reached 1/2 capacity and needs to be read.
1423 *
1424 **************************************************************/
1425
1426 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1427 {
1428 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1429
1430 return 1;
1431
1432 }
1433
1434
1435
1436
1437 /***************************************************************
1438 * TLan_HandleRxEOF
1439 *
1440 * Returns:
1441 * 1
1442 * Parms:
1443 * dev Device assigned the IRQ that was
1444 * raised.
1445 * host_int The contents of the HOST_INT
1446 * port.
1447 *
1448 * This function handles the Rx EOF interrupt which
1449 * indicates a frame has been received by the adapter from
1450 * the net and the frame has been transferred to memory.
1451 * The function determines the bounce buffer the frame has
1452 * been loaded into, creates a new sk_buff big enough to
1453 * hold the frame, and sends it to protocol stack. It
1454 * then resets the used buffer and appends it to the end
1455 * of the list. If the frame was the last in the Rx
1456 * channel (EOC), the function restarts the receive channel
1457 * by sending an Rx Go command to the adapter. Then it
1458 * activates/continues the activity LED.
1459 *
1460 **************************************************************/
1461
1462 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1463 {
1464 struct tlan_priv *priv = netdev_priv(dev);
1465 u32 ack = 0;
1466 int eoc = 0;
1467 struct tlan_list *head_list;
1468 struct sk_buff *skb;
1469 struct tlan_list *tail_list;
1470 u16 tmp_c_stat;
1471 dma_addr_t head_list_phys;
1472
1473 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1474 priv->rx_head, priv->rx_tail);
1475 head_list = priv->rx_list + priv->rx_head;
1476 head_list_phys =
1477 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1478
1479 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1480 && (ack < 255)) {
1481 dma_addr_t frame_dma = head_list->buffer[0].address;
1482 u32 frame_size = head_list->frame_size;
1483 struct sk_buff *new_skb;
1484
1485 ack++;
1486 if (tmp_c_stat & TLAN_CSTAT_EOC)
1487 eoc = 1;
1488
1489 new_skb = netdev_alloc_skb_ip_align(dev,
1490 TLAN_MAX_FRAME_SIZE + 5);
1491 if (!new_skb)
1492 goto drop_and_reuse;
1493
1494 skb = tlan_get_skb(head_list);
1495 pci_unmap_single(priv->pci_dev, frame_dma,
1496 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1497 skb_put(skb, frame_size);
1498
1499 dev->stats.rx_bytes += frame_size;
1500
1501 skb->protocol = eth_type_trans(skb, dev);
1502 netif_rx(skb);
1503
1504 head_list->buffer[0].address =
1505 pci_map_single(priv->pci_dev, new_skb->data,
1506 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1507
1508 tlan_store_skb(head_list, new_skb);
1509 drop_and_reuse:
1510 head_list->forward = 0;
1511 head_list->c_stat = 0;
1512 tail_list = priv->rx_list + priv->rx_tail;
1513 tail_list->forward = head_list_phys;
1514
1515 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1516 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1517 head_list = priv->rx_list + priv->rx_head;
1518 head_list_phys = priv->rx_list_dma
1519 + sizeof(struct tlan_list)*priv->rx_head;
1520 }
1521
1522 if (!ack)
1523 netdev_info(dev,
1524 "Received interrupt for uncompleted RX frame\n");
1525
1526
1527 if (eoc) {
1528 TLAN_DBG(TLAN_DEBUG_RX,
1529 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1530 priv->rx_head, priv->rx_tail);
1531 head_list = priv->rx_list + priv->rx_head;
1532 head_list_phys = priv->rx_list_dma
1533 + sizeof(struct tlan_list)*priv->rx_head;
1534 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1535 ack |= TLAN_HC_GO | TLAN_HC_RT;
1536 priv->rx_eoc_count++;
1537 }
1538
1539 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1540 tlan_dio_write8(dev->base_addr,
1541 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1542 if (priv->timer.function == NULL) {
1543 priv->timer.function = tlan_timer;
1544 priv->timer.data = (unsigned long) dev;
1545 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1546 priv->timer_set_at = jiffies;
1547 priv->timer_type = TLAN_TIMER_ACTIVITY;
1548 add_timer(&priv->timer);
1549 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1550 priv->timer_set_at = jiffies;
1551 }
1552 }
1553
1554 return ack;
1555
1556 }
1557
1558
1559
1560
1561 /***************************************************************
1562 * tlan_handle_dummy
1563 *
1564 * Returns:
1565 * 1
1566 * Parms:
1567 * dev Device assigned the IRQ that was
1568 * raised.
1569 * host_int The contents of the HOST_INT
1570 * port.
1571 *
1572 * This function handles the Dummy interrupt, which is
1573 * raised whenever a test interrupt is generated by setting
1574 * the Req_Int bit of HOST_CMD to 1.
1575 *
1576 **************************************************************/
1577
1578 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1579 {
1580 netdev_info(dev, "Test interrupt\n");
1581 return 1;
1582
1583 }
1584
1585
1586
1587
1588 /***************************************************************
1589 * tlan_handle_tx_eoc
1590 *
1591 * Returns:
1592 * 1
1593 * Parms:
1594 * dev Device assigned the IRQ that was
1595 * raised.
1596 * host_int The contents of the HOST_INT
1597 * port.
1598 *
1599 * This driver is structured to determine EOC occurrences by
1600 * reading the CSTAT member of the list structure. Tx EOC
1601 * interrupts are disabled via the DIO INTDIS register.
1602 * However, TLAN chips before revision 3.0 didn't have this
1603 * functionality, so process EOC events if this is the
1604 * case.
1605 *
1606 **************************************************************/
1607
1608 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1609 {
1610 struct tlan_priv *priv = netdev_priv(dev);
1611 struct tlan_list *head_list;
1612 dma_addr_t head_list_phys;
1613 u32 ack = 1;
1614
1615 host_int = 0;
1616 if (priv->tlan_rev < 0x30) {
1617 TLAN_DBG(TLAN_DEBUG_TX,
1618 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1619 priv->tx_head, priv->tx_tail);
1620 head_list = priv->tx_list + priv->tx_head;
1621 head_list_phys = priv->tx_list_dma
1622 + sizeof(struct tlan_list)*priv->tx_head;
1623 if ((head_list->c_stat & TLAN_CSTAT_READY)
1624 == TLAN_CSTAT_READY) {
1625 netif_stop_queue(dev);
1626 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1627 ack |= TLAN_HC_GO;
1628 } else {
1629 priv->tx_in_progress = 0;
1630 }
1631 }
1632
1633 return ack;
1634
1635 }
1636
1637
1638
1639
1640 /***************************************************************
1641 * tlan_handle_status_check
1642 *
1643 * Returns:
1644 * 0 if Adapter check, 1 if Network Status check.
1645 * Parms:
1646 * dev Device assigned the IRQ that was
1647 * raised.
1648 * host_int The contents of the HOST_INT
1649 * port.
1650 *
1651 * This function handles Adapter Check/Network Status
1652 * interrupts generated by the adapter. It checks the
1653 * vector in the HOST_INT register to determine if it is
1654 * an Adapter Check interrupt. If so, it resets the
1655 * adapter. Otherwise it clears the status registers
1656 * and services the PHY.
1657 *
1658 **************************************************************/
1659
1660 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1661 {
1662 struct tlan_priv *priv = netdev_priv(dev);
1663 u32 ack;
1664 u32 error;
1665 u8 net_sts;
1666 u32 phy;
1667 u16 tlphy_ctl;
1668 u16 tlphy_sts;
1669
1670 ack = 1;
1671 if (host_int & TLAN_HI_IV_MASK) {
1672 netif_stop_queue(dev);
1673 error = inl(dev->base_addr + TLAN_CH_PARM);
1674 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1675 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1676 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1677
1678 schedule_work(&priv->tlan_tqueue);
1679
1680 netif_wake_queue(dev);
1681 ack = 0;
1682 } else {
1683 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1684 phy = priv->phy[priv->phy_num];
1685
1686 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1687 if (net_sts) {
1688 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1689 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1690 dev->name, (unsigned) net_sts);
1691 }
1692 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1693 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1694 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1695 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1696 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1697 tlphy_ctl |= TLAN_TC_SWAPOL;
1698 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1699 tlphy_ctl);
1700 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1701 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1702 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1703 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1704 tlphy_ctl);
1705 }
1706
1707 if (debug)
1708 tlan_phy_print(dev);
1709 }
1710 }
1711
1712 return ack;
1713
1714 }
1715
1716
1717
1718
1719 /***************************************************************
1720 * tlan_handle_rx_eoc
1721 *
1722 * Returns:
1723 * 1
1724 * Parms:
1725 * dev Device assigned the IRQ that was
1726 * raised.
1727 * host_int The contents of the HOST_INT
1728 * port.
1729 *
1730 * This driver is structured to determine EOC occurrences by
1731 * reading the CSTAT member of the list structure. Rx EOC
1732 * interrupts are disabled via the DIO INTDIS register.
1733 * However, TLAN chips before revision 3.0 didn't have this
1734 * CSTAT member or a INTDIS register, so if this chip is
1735 * pre-3.0, process EOC interrupts normally.
1736 *
1737 **************************************************************/
1738
1739 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1740 {
1741 struct tlan_priv *priv = netdev_priv(dev);
1742 dma_addr_t head_list_phys;
1743 u32 ack = 1;
1744
1745 if (priv->tlan_rev < 0x30) {
1746 TLAN_DBG(TLAN_DEBUG_RX,
1747 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1748 priv->rx_head, priv->rx_tail);
1749 head_list_phys = priv->rx_list_dma
1750 + sizeof(struct tlan_list)*priv->rx_head;
1751 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1752 ack |= TLAN_HC_GO | TLAN_HC_RT;
1753 priv->rx_eoc_count++;
1754 }
1755
1756 return ack;
1757
1758 }
1759
1760
1761
1762
1763 /*****************************************************************************
1764 ******************************************************************************
1765
1766 ThunderLAN driver timer function
1767
1768 ******************************************************************************
1769 *****************************************************************************/
1770
1771
1772 /***************************************************************
1773 * tlan_timer
1774 *
1775 * Returns:
1776 * Nothing
1777 * Parms:
1778 * data A value given to add timer when
1779 * add_timer was called.
1780 *
1781 * This function handles timed functionality for the
1782 * TLAN driver. The two current timer uses are for
1783 * delaying for autonegotionation and driving the ACT LED.
1784 * - Autonegotiation requires being allowed about
1785 * 2 1/2 seconds before attempting to transmit a
1786 * packet. It would be a very bad thing to hang
1787 * the kernel this long, so the driver doesn't
1788 * allow transmission 'til after this time, for
1789 * certain PHYs. It would be much nicer if all
1790 * PHYs were interrupt-capable like the internal
1791 * PHY.
1792 * - The ACT LED, which shows adapter activity, is
1793 * driven by the driver, and so must be left on
1794 * for a short period to power up the LED so it
1795 * can be seen. This delay can be changed by
1796 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1797 * if desired. 100 ms produces a slightly
1798 * sluggish response.
1799 *
1800 **************************************************************/
1801
1802 static void tlan_timer(unsigned long data)
1803 {
1804 struct net_device *dev = (struct net_device *) data;
1805 struct tlan_priv *priv = netdev_priv(dev);
1806 u32 elapsed;
1807 unsigned long flags = 0;
1808
1809 priv->timer.function = NULL;
1810
1811 switch (priv->timer_type) {
1812 #ifdef MONITOR
1813 case TLAN_TIMER_LINK_BEAT:
1814 tlan_phy_monitor(dev);
1815 break;
1816 #endif
1817 case TLAN_TIMER_PHY_PDOWN:
1818 tlan_phy_power_down(dev);
1819 break;
1820 case TLAN_TIMER_PHY_PUP:
1821 tlan_phy_power_up(dev);
1822 break;
1823 case TLAN_TIMER_PHY_RESET:
1824 tlan_phy_reset(dev);
1825 break;
1826 case TLAN_TIMER_PHY_START_LINK:
1827 tlan_phy_start_link(dev);
1828 break;
1829 case TLAN_TIMER_PHY_FINISH_AN:
1830 tlan_phy_finish_auto_neg(dev);
1831 break;
1832 case TLAN_TIMER_FINISH_RESET:
1833 tlan_finish_reset(dev);
1834 break;
1835 case TLAN_TIMER_ACTIVITY:
1836 spin_lock_irqsave(&priv->lock, flags);
1837 if (priv->timer.function == NULL) {
1838 elapsed = jiffies - priv->timer_set_at;
1839 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1840 tlan_dio_write8(dev->base_addr,
1841 TLAN_LED_REG, TLAN_LED_LINK);
1842 } else {
1843 priv->timer.function = tlan_timer;
1844 priv->timer.expires = priv->timer_set_at
1845 + TLAN_TIMER_ACT_DELAY;
1846 spin_unlock_irqrestore(&priv->lock, flags);
1847 add_timer(&priv->timer);
1848 break;
1849 }
1850 }
1851 spin_unlock_irqrestore(&priv->lock, flags);
1852 break;
1853 default:
1854 break;
1855 }
1856
1857 }
1858
1859
1860
1861
1862 /*****************************************************************************
1863 ******************************************************************************
1864
1865 ThunderLAN driver adapter related routines
1866
1867 ******************************************************************************
1868 *****************************************************************************/
1869
1870
1871 /***************************************************************
1872 * tlan_reset_lists
1873 *
1874 * Returns:
1875 * Nothing
1876 * Parms:
1877 * dev The device structure with the list
1878 * stuctures to be reset.
1879 *
1880 * This routine sets the variables associated with managing
1881 * the TLAN lists to their initial values.
1882 *
1883 **************************************************************/
1884
1885 static void tlan_reset_lists(struct net_device *dev)
1886 {
1887 struct tlan_priv *priv = netdev_priv(dev);
1888 int i;
1889 struct tlan_list *list;
1890 dma_addr_t list_phys;
1891 struct sk_buff *skb;
1892
1893 priv->tx_head = 0;
1894 priv->tx_tail = 0;
1895 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1896 list = priv->tx_list + i;
1897 list->c_stat = TLAN_CSTAT_UNUSED;
1898 list->buffer[0].address = 0;
1899 list->buffer[2].count = 0;
1900 list->buffer[2].address = 0;
1901 list->buffer[8].address = 0;
1902 list->buffer[9].address = 0;
1903 }
1904
1905 priv->rx_head = 0;
1906 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1907 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1908 list = priv->rx_list + i;
1909 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1910 list->c_stat = TLAN_CSTAT_READY;
1911 list->frame_size = TLAN_MAX_FRAME_SIZE;
1912 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1913 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1914 if (!skb) {
1915 netdev_err(dev, "Out of memory for received data\n");
1916 break;
1917 }
1918
1919 list->buffer[0].address = pci_map_single(priv->pci_dev,
1920 skb->data,
1921 TLAN_MAX_FRAME_SIZE,
1922 PCI_DMA_FROMDEVICE);
1923 tlan_store_skb(list, skb);
1924 list->buffer[1].count = 0;
1925 list->buffer[1].address = 0;
1926 list->forward = list_phys + sizeof(struct tlan_list);
1927 }
1928
1929 /* in case ran out of memory early, clear bits */
1930 while (i < TLAN_NUM_RX_LISTS) {
1931 tlan_store_skb(priv->rx_list + i, NULL);
1932 ++i;
1933 }
1934 list->forward = 0;
1935
1936 }
1937
1938
1939 static void tlan_free_lists(struct net_device *dev)
1940 {
1941 struct tlan_priv *priv = netdev_priv(dev);
1942 int i;
1943 struct tlan_list *list;
1944 struct sk_buff *skb;
1945
1946 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1947 list = priv->tx_list + i;
1948 skb = tlan_get_skb(list);
1949 if (skb) {
1950 pci_unmap_single(
1951 priv->pci_dev,
1952 list->buffer[0].address,
1953 max(skb->len,
1954 (unsigned int)TLAN_MIN_FRAME_SIZE),
1955 PCI_DMA_TODEVICE);
1956 dev_kfree_skb_any(skb);
1957 list->buffer[8].address = 0;
1958 list->buffer[9].address = 0;
1959 }
1960 }
1961
1962 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1963 list = priv->rx_list + i;
1964 skb = tlan_get_skb(list);
1965 if (skb) {
1966 pci_unmap_single(priv->pci_dev,
1967 list->buffer[0].address,
1968 TLAN_MAX_FRAME_SIZE,
1969 PCI_DMA_FROMDEVICE);
1970 dev_kfree_skb_any(skb);
1971 list->buffer[8].address = 0;
1972 list->buffer[9].address = 0;
1973 }
1974 }
1975 }
1976
1977
1978
1979
1980 /***************************************************************
1981 * tlan_print_dio
1982 *
1983 * Returns:
1984 * Nothing
1985 * Parms:
1986 * io_base Base IO port of the device of
1987 * which to print DIO registers.
1988 *
1989 * This function prints out all the internal (DIO)
1990 * registers of a TLAN chip.
1991 *
1992 **************************************************************/
1993
1994 static void tlan_print_dio(u16 io_base)
1995 {
1996 u32 data0, data1;
1997 int i;
1998
1999 pr_info("Contents of internal registers for io base 0x%04hx\n",
2000 io_base);
2001 pr_info("Off. +0 +4\n");
2002 for (i = 0; i < 0x4C; i += 8) {
2003 data0 = tlan_dio_read32(io_base, i);
2004 data1 = tlan_dio_read32(io_base, i + 0x4);
2005 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2006 }
2007
2008 }
2009
2010
2011
2012
2013 /***************************************************************
2014 * TLan_PrintList
2015 *
2016 * Returns:
2017 * Nothing
2018 * Parms:
2019 * list A pointer to the struct tlan_list structure to
2020 * be printed.
2021 * type A string to designate type of list,
2022 * "Rx" or "Tx".
2023 * num The index of the list.
2024 *
2025 * This function prints out the contents of the list
2026 * pointed to by the list parameter.
2027 *
2028 **************************************************************/
2029
2030 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2031 {
2032 int i;
2033
2034 pr_info("%s List %d at %p\n", type, num, list);
2035 pr_info(" Forward = 0x%08x\n", list->forward);
2036 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2037 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2038 /* for (i = 0; i < 10; i++) { */
2039 for (i = 0; i < 2; i++) {
2040 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2041 i, list->buffer[i].count, list->buffer[i].address);
2042 }
2043
2044 }
2045
2046
2047
2048
2049 /***************************************************************
2050 * tlan_read_and_clear_stats
2051 *
2052 * Returns:
2053 * Nothing
2054 * Parms:
2055 * dev Pointer to device structure of adapter
2056 * to which to read stats.
2057 * record Flag indicating whether to add
2058 *
2059 * This functions reads all the internal status registers
2060 * of the TLAN chip, which clears them as a side effect.
2061 * It then either adds the values to the device's status
2062 * struct, or discards them, depending on whether record
2063 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2064 *
2065 **************************************************************/
2066
2067 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2068 {
2069 u32 tx_good, tx_under;
2070 u32 rx_good, rx_over;
2071 u32 def_tx, crc, code;
2072 u32 multi_col, single_col;
2073 u32 excess_col, late_col, loss;
2074
2075 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2076 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2077 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2078 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2079 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2080
2081 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2082 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2083 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2084 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2085 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2086
2087 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2088 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2089 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2090 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2091 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2092
2093 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2094 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2095 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2096 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2097 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2098
2099 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2100 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2101 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2102 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2103
2104 if (record) {
2105 dev->stats.rx_packets += rx_good;
2106 dev->stats.rx_errors += rx_over + crc + code;
2107 dev->stats.tx_packets += tx_good;
2108 dev->stats.tx_errors += tx_under + loss;
2109 dev->stats.collisions += multi_col
2110 + single_col + excess_col + late_col;
2111
2112 dev->stats.rx_over_errors += rx_over;
2113 dev->stats.rx_crc_errors += crc;
2114 dev->stats.rx_frame_errors += code;
2115
2116 dev->stats.tx_aborted_errors += tx_under;
2117 dev->stats.tx_carrier_errors += loss;
2118 }
2119
2120 }
2121
2122
2123
2124
2125 /***************************************************************
2126 * TLan_Reset
2127 *
2128 * Returns:
2129 * 0
2130 * Parms:
2131 * dev Pointer to device structure of adapter
2132 * to be reset.
2133 *
2134 * This function resets the adapter and it's physical
2135 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2136 * Programmer's Guide" for details. The routine tries to
2137 * implement what is detailed there, though adjustments
2138 * have been made.
2139 *
2140 **************************************************************/
2141
2142 static void
2143 tlan_reset_adapter(struct net_device *dev)
2144 {
2145 struct tlan_priv *priv = netdev_priv(dev);
2146 int i;
2147 u32 addr;
2148 u32 data;
2149 u8 data8;
2150
2151 priv->tlan_full_duplex = false;
2152 priv->phy_online = 0;
2153 netif_carrier_off(dev);
2154
2155 /* 1. Assert reset bit. */
2156
2157 data = inl(dev->base_addr + TLAN_HOST_CMD);
2158 data |= TLAN_HC_AD_RST;
2159 outl(data, dev->base_addr + TLAN_HOST_CMD);
2160
2161 udelay(1000);
2162
2163 /* 2. Turn off interrupts. (Probably isn't necessary) */
2164
2165 data = inl(dev->base_addr + TLAN_HOST_CMD);
2166 data |= TLAN_HC_INT_OFF;
2167 outl(data, dev->base_addr + TLAN_HOST_CMD);
2168
2169 /* 3. Clear AREGs and HASHs. */
2170
2171 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2172 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2173
2174 /* 4. Setup NetConfig register. */
2175
2176 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2177 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2178
2179 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2180
2181 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2182 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2183
2184 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2185
2186 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2187 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2188 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2189
2190 /* 7. Setup the remaining registers. */
2191
2192 if (priv->tlan_rev >= 0x30) {
2193 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2194 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2195 }
2196 tlan_phy_detect(dev);
2197 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2198
2199 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2200 data |= TLAN_NET_CFG_BIT;
2201 if (priv->aui == 1) {
2202 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2203 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2204 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2205 priv->tlan_full_duplex = true;
2206 } else {
2207 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2208 }
2209 }
2210
2211 if (priv->phy_num == 0)
2212 data |= TLAN_NET_CFG_PHY_EN;
2213 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2214
2215 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2216 tlan_finish_reset(dev);
2217 else
2218 tlan_phy_power_down(dev);
2219
2220 }
2221
2222
2223
2224
2225 static void
2226 tlan_finish_reset(struct net_device *dev)
2227 {
2228 struct tlan_priv *priv = netdev_priv(dev);
2229 u8 data;
2230 u32 phy;
2231 u8 sio;
2232 u16 status;
2233 u16 partner;
2234 u16 tlphy_ctl;
2235 u16 tlphy_par;
2236 u16 tlphy_id1, tlphy_id2;
2237 int i;
2238
2239 phy = priv->phy[priv->phy_num];
2240
2241 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2242 if (priv->tlan_full_duplex)
2243 data |= TLAN_NET_CMD_DUPLEX;
2244 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2245 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2246 if (priv->phy_num == 0)
2247 data |= TLAN_NET_MASK_MASK7;
2248 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2249 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2250 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2251 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2252
2253 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2254 (priv->aui)) {
2255 status = MII_GS_LINK;
2256 netdev_info(dev, "Link forced\n");
2257 } else {
2258 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2259 udelay(1000);
2260 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2261 if ((status & MII_GS_LINK) &&
2262 /* We only support link info on Nat.Sem. PHY's */
2263 (tlphy_id1 == NAT_SEM_ID1) &&
2264 (tlphy_id2 == NAT_SEM_ID2)) {
2265 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
2266 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);
2267
2268 netdev_info(dev,
2269 "Link active with %s %uMbps %s-Duplex\n",
2270 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2271 ? "forced" : "Autonegotiation enabled,",
2272 tlphy_par & TLAN_PHY_SPEED_100
2273 ? 100 : 10,
2274 tlphy_par & TLAN_PHY_DUPLEX_FULL
2275 ? "Full" : "Half");
2276
2277 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2278 netdev_info(dev, "Partner capability:");
2279 for (i = 5; i < 10; i++)
2280 if (partner & (1 << i))
2281 pr_cont(" %s", media[i-5]);
2282 pr_cont("\n");
2283 }
2284
2285 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2286 TLAN_LED_LINK);
2287 #ifdef MONITOR
2288 /* We have link beat..for now anyway */
2289 priv->link = 1;
2290 /*Enabling link beat monitoring */
2291 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2292 #endif
2293 } else if (status & MII_GS_LINK) {
2294 netdev_info(dev, "Link active\n");
2295 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2296 TLAN_LED_LINK);
2297 }
2298 }
2299
2300 if (priv->phy_num == 0) {
2301 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2302 tlphy_ctl |= TLAN_TC_INTEN;
2303 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2304 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2305 sio |= TLAN_NET_SIO_MINTEN;
2306 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2307 }
2308
2309 if (status & MII_GS_LINK) {
2310 tlan_set_mac(dev, 0, dev->dev_addr);
2311 priv->phy_online = 1;
2312 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2313 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2314 outb((TLAN_HC_REQ_INT >> 8),
2315 dev->base_addr + TLAN_HOST_CMD + 1);
2316 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2317 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2318 netif_carrier_on(dev);
2319 } else {
2320 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2321 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2322 return;
2323 }
2324 tlan_set_multicast_list(dev);
2325
2326 }
2327
2328
2329
2330
2331 /***************************************************************
2332 * tlan_set_mac
2333 *
2334 * Returns:
2335 * Nothing
2336 * Parms:
2337 * dev Pointer to device structure of adapter
2338 * on which to change the AREG.
2339 * areg The AREG to set the address in (0 - 3).
2340 * mac A pointer to an array of chars. Each
2341 * element stores one byte of the address.
2342 * IE, it isn't in ascii.
2343 *
2344 * This function transfers a MAC address to one of the
2345 * TLAN AREGs (address registers). The TLAN chip locks
2346 * the register on writing to offset 0 and unlocks the
2347 * register after writing to offset 5. If NULL is passed
2348 * in mac, then the AREG is filled with 0's.
2349 *
2350 **************************************************************/
2351
2352 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2353 {
2354 int i;
2355
2356 areg *= 6;
2357
2358 if (mac != NULL) {
2359 for (i = 0; i < 6; i++)
2360 tlan_dio_write8(dev->base_addr,
2361 TLAN_AREG_0 + areg + i, mac[i]);
2362 } else {
2363 for (i = 0; i < 6; i++)
2364 tlan_dio_write8(dev->base_addr,
2365 TLAN_AREG_0 + areg + i, 0);
2366 }
2367
2368 }
2369
2370
2371
2372
2373 /*****************************************************************************
2374 ******************************************************************************
2375
2376 ThunderLAN driver PHY layer routines
2377
2378 ******************************************************************************
2379 *****************************************************************************/
2380
2381
2382
2383 /*********************************************************************
2384 * tlan_phy_print
2385 *
2386 * Returns:
2387 * Nothing
2388 * Parms:
2389 * dev A pointer to the device structure of the
2390 * TLAN device having the PHYs to be detailed.
2391 *
2392 * This function prints the registers a PHY (aka transceiver).
2393 *
2394 ********************************************************************/
2395
2396 static void tlan_phy_print(struct net_device *dev)
2397 {
2398 struct tlan_priv *priv = netdev_priv(dev);
2399 u16 i, data0, data1, data2, data3, phy;
2400
2401 phy = priv->phy[priv->phy_num];
2402
2403 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2404 netdev_info(dev, "Unmanaged PHY\n");
2405 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2406 netdev_info(dev, "PHY 0x%02x\n", phy);
2407 pr_info(" Off. +0 +1 +2 +3\n");
2408 for (i = 0; i < 0x20; i += 4) {
2409 tlan_mii_read_reg(dev, phy, i, &data0);
2410 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2411 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2412 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2413 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2414 i, data0, data1, data2, data3);
2415 }
2416 } else {
2417 netdev_info(dev, "Invalid PHY\n");
2418 }
2419
2420 }
2421
2422
2423
2424
2425 /*********************************************************************
2426 * tlan_phy_detect
2427 *
2428 * Returns:
2429 * Nothing
2430 * Parms:
2431 * dev A pointer to the device structure of the adapter
2432 * for which the PHY needs determined.
2433 *
2434 * So far I've found that adapters which have external PHYs
2435 * may also use the internal PHY for part of the functionality.
2436 * (eg, AUI/Thinnet). This function finds out if this TLAN
2437 * chip has an internal PHY, and then finds the first external
2438 * PHY (starting from address 0) if it exists).
2439 *
2440 ********************************************************************/
2441
2442 static void tlan_phy_detect(struct net_device *dev)
2443 {
2444 struct tlan_priv *priv = netdev_priv(dev);
2445 u16 control;
2446 u16 hi;
2447 u16 lo;
2448 u32 phy;
2449
2450 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2451 priv->phy_num = 0xffff;
2452 return;
2453 }
2454
2455 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2456
2457 if (hi != 0xffff)
2458 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2459 else
2460 priv->phy[0] = TLAN_PHY_NONE;
2461
2462 priv->phy[1] = TLAN_PHY_NONE;
2463 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2464 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2465 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2466 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2467 if ((control != 0xffff) ||
2468 (hi != 0xffff) || (lo != 0xffff)) {
2469 TLAN_DBG(TLAN_DEBUG_GNRL,
2470 "PHY found at %02x %04x %04x %04x\n",
2471 phy, control, hi, lo);
2472 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2473 (phy != TLAN_PHY_MAX_ADDR)) {
2474 priv->phy[1] = phy;
2475 }
2476 }
2477 }
2478
2479 if (priv->phy[1] != TLAN_PHY_NONE)
2480 priv->phy_num = 1;
2481 else if (priv->phy[0] != TLAN_PHY_NONE)
2482 priv->phy_num = 0;
2483 else
2484 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2485
2486 }
2487
2488
2489
2490
2491 static void tlan_phy_power_down(struct net_device *dev)
2492 {
2493 struct tlan_priv *priv = netdev_priv(dev);
2494 u16 value;
2495
2496 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2497 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2498 tlan_mii_sync(dev->base_addr);
2499 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2500 if ((priv->phy_num == 0) &&
2501 (priv->phy[1] != TLAN_PHY_NONE) &&
2502 (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2503 tlan_mii_sync(dev->base_addr);
2504 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2505 }
2506
2507 /* Wait for 50 ms and powerup
2508 * This is abitrary. It is intended to make sure the
2509 * transceiver settles.
2510 */
2511 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2512
2513 }
2514
2515
2516
2517
2518 static void tlan_phy_power_up(struct net_device *dev)
2519 {
2520 struct tlan_priv *priv = netdev_priv(dev);
2521 u16 value;
2522
2523 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2524 tlan_mii_sync(dev->base_addr);
2525 value = MII_GC_LOOPBK;
2526 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2527 tlan_mii_sync(dev->base_addr);
2528 /* Wait for 500 ms and reset the
2529 * transceiver. The TLAN docs say both 50 ms and
2530 * 500 ms, so do the longer, just in case.
2531 */
2532 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2533
2534 }
2535
2536
2537
2538
2539 static void tlan_phy_reset(struct net_device *dev)
2540 {
2541 struct tlan_priv *priv = netdev_priv(dev);
2542 u16 phy;
2543 u16 value;
2544
2545 phy = priv->phy[priv->phy_num];
2546
2547 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name);
2548 tlan_mii_sync(dev->base_addr);
2549 value = MII_GC_LOOPBK | MII_GC_RESET;
2550 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2551 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2552 while (value & MII_GC_RESET)
2553 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2554
2555 /* Wait for 500 ms and initialize.
2556 * I don't remember why I wait this long.
2557 * I've changed this to 50ms, as it seems long enough.
2558 */
2559 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2560
2561 }
2562
2563
2564
2565
2566 static void tlan_phy_start_link(struct net_device *dev)
2567 {
2568 struct tlan_priv *priv = netdev_priv(dev);
2569 u16 ability;
2570 u16 control;
2571 u16 data;
2572 u16 phy;
2573 u16 status;
2574 u16 tctl;
2575
2576 phy = priv->phy[priv->phy_num];
2577 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2578 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2579 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2580
2581 if ((status & MII_GS_AUTONEG) &&
2582 (!priv->aui)) {
2583 ability = status >> 11;
2584 if (priv->speed == TLAN_SPEED_10 &&
2585 priv->duplex == TLAN_DUPLEX_HALF) {
2586 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2587 } else if (priv->speed == TLAN_SPEED_10 &&
2588 priv->duplex == TLAN_DUPLEX_FULL) {
2589 priv->tlan_full_duplex = true;
2590 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2591 } else if (priv->speed == TLAN_SPEED_100 &&
2592 priv->duplex == TLAN_DUPLEX_HALF) {
2593 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2594 } else if (priv->speed == TLAN_SPEED_100 &&
2595 priv->duplex == TLAN_DUPLEX_FULL) {
2596 priv->tlan_full_duplex = true;
2597 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2598 } else {
2599
2600 /* Set Auto-Neg advertisement */
2601 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2602 (ability << 5) | 1);
2603 /* Enablee Auto-Neg */
2604 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2605 /* Restart Auto-Neg */
2606 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2607 /* Wait for 4 sec for autonegotiation
2608 * to complete. The max spec time is less than this
2609 * but the card need additional time to start AN.
2610 * .5 sec should be plenty extra.
2611 */
2612 netdev_info(dev, "Starting autonegotiation\n");
2613 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2614 return;
2615 }
2616
2617 }
2618
2619 if ((priv->aui) && (priv->phy_num != 0)) {
2620 priv->phy_num = 0;
2621 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2622 | TLAN_NET_CFG_PHY_EN;
2623 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2624 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2625 return;
2626 } else if (priv->phy_num == 0) {
2627 control = 0;
2628 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2629 if (priv->aui) {
2630 tctl |= TLAN_TC_AUISEL;
2631 } else {
2632 tctl &= ~TLAN_TC_AUISEL;
2633 if (priv->duplex == TLAN_DUPLEX_FULL) {
2634 control |= MII_GC_DUPLEX;
2635 priv->tlan_full_duplex = true;
2636 }
2637 if (priv->speed == TLAN_SPEED_100)
2638 control |= MII_GC_SPEEDSEL;
2639 }
2640 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2641 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2642 }
2643
2644 /* Wait for 2 sec to give the transceiver time
2645 * to establish link.
2646 */
2647 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2648
2649 }
2650
2651
2652
2653
2654 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2655 {
2656 struct tlan_priv *priv = netdev_priv(dev);
2657 u16 an_adv;
2658 u16 an_lpa;
2659 u16 data;
2660 u16 mode;
2661 u16 phy;
2662 u16 status;
2663
2664 phy = priv->phy[priv->phy_num];
2665
2666 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2667 udelay(1000);
2668 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2669
2670 if (!(status & MII_GS_AUTOCMPLT)) {
2671 /* Wait for 8 sec to give the process
2672 * more time. Perhaps we should fail after a while.
2673 */
2674 if (!priv->neg_be_verbose++) {
2675 pr_info("Giving autonegotiation more time.\n");
2676 pr_info("Please check that your adapter has\n");
2677 pr_info("been properly connected to a HUB or Switch.\n");
2678 pr_info("Trying to establish link in the background...\n");
2679 }
2680 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2681 return;
2682 }
2683
2684 netdev_info(dev, "Autonegotiation complete\n");
2685 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2686 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2687 mode = an_adv & an_lpa & 0x03E0;
2688 if (mode & 0x0100)
2689 priv->tlan_full_duplex = true;
2690 else if (!(mode & 0x0080) && (mode & 0x0040))
2691 priv->tlan_full_duplex = true;
2692
2693 if ((!(mode & 0x0180)) &&
2694 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2695 (priv->phy_num != 0)) {
2696 priv->phy_num = 0;
2697 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2698 | TLAN_NET_CFG_PHY_EN;
2699 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2700 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2701 return;
2702 }
2703
2704 if (priv->phy_num == 0) {
2705 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2706 (an_adv & an_lpa & 0x0040)) {
2707 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2708 MII_GC_AUTOENB | MII_GC_DUPLEX);
2709 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2710 } else {
2711 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2712 MII_GC_AUTOENB);
2713 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2714 }
2715 }
2716
2717 /* Wait for 100 ms. No reason in partiticular.
2718 */
2719 tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2720
2721 }
2722
2723 #ifdef MONITOR
2724
2725 /*********************************************************************
2726 *
2727 * tlan_phy_monitor
2728 *
2729 * Returns:
2730 * None
2731 *
2732 * Params:
2733 * dev The device structure of this device.
2734 *
2735 *
2736 * This function monitors PHY condition by reading the status
2737 * register via the MII bus. This can be used to give info
2738 * about link changes (up/down), and possible switch to alternate
2739 * media.
2740 *
2741 *******************************************************************/
2742
2743 void tlan_phy_monitor(struct net_device *dev)
2744 {
2745 struct tlan_priv *priv = netdev_priv(dev);
2746 u16 phy;
2747 u16 phy_status;
2748
2749 phy = priv->phy[priv->phy_num];
2750
2751 /* Get PHY status register */
2752 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2753
2754 /* Check if link has been lost */
2755 if (!(phy_status & MII_GS_LINK)) {
2756 if (priv->link) {
2757 priv->link = 0;
2758 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2759 dev->name);
2760 netif_carrier_off(dev);
2761 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2762 return;
2763 }
2764 }
2765
2766 /* Link restablished? */
2767 if ((phy_status & MII_GS_LINK) && !priv->link) {
2768 priv->link = 1;
2769 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2770 dev->name);
2771 netif_carrier_on(dev);
2772 }
2773
2774 /* Setup a new monitor */
2775 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2776 }
2777
2778 #endif /* MONITOR */
2779
2780
2781 /*****************************************************************************
2782 ******************************************************************************
2783
2784 ThunderLAN driver MII routines
2785
2786 these routines are based on the information in chap. 2 of the
2787 "ThunderLAN Programmer's Guide", pp. 15-24.
2788
2789 ******************************************************************************
2790 *****************************************************************************/
2791
2792
2793 /***************************************************************
2794 * tlan_mii_read_reg
2795 *
2796 * Returns:
2797 * false if ack received ok
2798 * true if no ack received or other error
2799 *
2800 * Parms:
2801 * dev The device structure containing
2802 * The io address and interrupt count
2803 * for this device.
2804 * phy The address of the PHY to be queried.
2805 * reg The register whose contents are to be
2806 * retrieved.
2807 * val A pointer to a variable to store the
2808 * retrieved value.
2809 *
2810 * This function uses the TLAN's MII bus to retrieve the contents
2811 * of a given register on a PHY. It sends the appropriate info
2812 * and then reads the 16-bit register value from the MII bus via
2813 * the TLAN SIO register.
2814 *
2815 **************************************************************/
2816
2817 static bool
2818 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2819 {
2820 u8 nack;
2821 u16 sio, tmp;
2822 u32 i;
2823 bool err;
2824 int minten;
2825 struct tlan_priv *priv = netdev_priv(dev);
2826 unsigned long flags = 0;
2827
2828 err = false;
2829 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2830 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2831
2832 if (!in_irq())
2833 spin_lock_irqsave(&priv->lock, flags);
2834
2835 tlan_mii_sync(dev->base_addr);
2836
2837 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2838 if (minten)
2839 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2840
2841 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2842 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2843 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2844 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2845
2846
2847 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2848
2849 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2850 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2851 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2852
2853 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2854 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2855 if (nack) { /* no ACK, so fake it */
2856 for (i = 0; i < 16; i++) {
2857 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2858 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2859 }
2860 tmp = 0xffff;
2861 err = true;
2862 } else { /* ACK, so read data */
2863 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2864 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2865 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2866 tmp |= i;
2867 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2868 }
2869 }
2870
2871
2872 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2873 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2874
2875 if (minten)
2876 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2877
2878 *val = tmp;
2879
2880 if (!in_irq())
2881 spin_unlock_irqrestore(&priv->lock, flags);
2882
2883 return err;
2884
2885 }
2886
2887
2888
2889
2890 /***************************************************************
2891 * tlan_mii_send_data
2892 *
2893 * Returns:
2894 * Nothing
2895 * Parms:
2896 * base_port The base IO port of the adapter in
2897 * question.
2898 * dev The address of the PHY to be queried.
2899 * data The value to be placed on the MII bus.
2900 * num_bits The number of bits in data that are to
2901 * be placed on the MII bus.
2902 *
2903 * This function sends on sequence of bits on the MII
2904 * configuration bus.
2905 *
2906 **************************************************************/
2907
2908 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2909 {
2910 u16 sio;
2911 u32 i;
2912
2913 if (num_bits == 0)
2914 return;
2915
2916 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2917 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2918 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2919
2920 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2921 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2922 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2923 if (data & i)
2924 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2925 else
2926 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2927 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2928 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2929 }
2930
2931 }
2932
2933
2934
2935
2936 /***************************************************************
2937 * TLan_MiiSync
2938 *
2939 * Returns:
2940 * Nothing
2941 * Parms:
2942 * base_port The base IO port of the adapter in
2943 * question.
2944 *
2945 * This functions syncs all PHYs in terms of the MII configuration
2946 * bus.
2947 *
2948 **************************************************************/
2949
2950 static void tlan_mii_sync(u16 base_port)
2951 {
2952 int i;
2953 u16 sio;
2954
2955 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2956 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2957
2958 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2959 for (i = 0; i < 32; i++) {
2960 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2961 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2962 }
2963
2964 }
2965
2966
2967
2968
2969 /***************************************************************
2970 * tlan_mii_write_reg
2971 *
2972 * Returns:
2973 * Nothing
2974 * Parms:
2975 * dev The device structure for the device
2976 * to write to.
2977 * phy The address of the PHY to be written to.
2978 * reg The register whose contents are to be
2979 * written.
2980 * val The value to be written to the register.
2981 *
2982 * This function uses the TLAN's MII bus to write the contents of a
2983 * given register on a PHY. It sends the appropriate info and then
2984 * writes the 16-bit register value from the MII configuration bus
2985 * via the TLAN SIO register.
2986 *
2987 **************************************************************/
2988
2989 static void
2990 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2991 {
2992 u16 sio;
2993 int minten;
2994 unsigned long flags = 0;
2995 struct tlan_priv *priv = netdev_priv(dev);
2996
2997 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2998 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2999
3000 if (!in_irq())
3001 spin_lock_irqsave(&priv->lock, flags);
3002
3003 tlan_mii_sync(dev->base_addr);
3004
3005 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3006 if (minten)
3007 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3008
3009 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3010 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3011 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3012 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3013
3014 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3015 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3016
3017 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3018 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3019
3020 if (minten)
3021 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3022
3023 if (!in_irq())
3024 spin_unlock_irqrestore(&priv->lock, flags);
3025
3026 }
3027
3028
3029
3030
3031 /*****************************************************************************
3032 ******************************************************************************
3033
3034 ThunderLAN driver eeprom routines
3035
3036 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3037 EEPROM. these functions are based on information in microchip's
3038 data sheet. I don't know how well this functions will work with
3039 other Eeproms.
3040
3041 ******************************************************************************
3042 *****************************************************************************/
3043
3044
3045 /***************************************************************
3046 * tlan_ee_send_start
3047 *
3048 * Returns:
3049 * Nothing
3050 * Parms:
3051 * io_base The IO port base address for the
3052 * TLAN device with the EEPROM to
3053 * use.
3054 *
3055 * This function sends a start cycle to an EEPROM attached
3056 * to a TLAN chip.
3057 *
3058 **************************************************************/
3059
3060 static void tlan_ee_send_start(u16 io_base)
3061 {
3062 u16 sio;
3063
3064 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3065 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3066
3067 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3068 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3069 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3070 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3071 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3072
3073 }
3074
3075
3076
3077
3078 /***************************************************************
3079 * tlan_ee_send_byte
3080 *
3081 * Returns:
3082 * If the correct ack was received, 0, otherwise 1
3083 * Parms: io_base The IO port base address for the
3084 * TLAN device with the EEPROM to
3085 * use.
3086 * data The 8 bits of information to
3087 * send to the EEPROM.
3088 * stop If TLAN_EEPROM_STOP is passed, a
3089 * stop cycle is sent after the
3090 * byte is sent after the ack is
3091 * read.
3092 *
3093 * This function sends a byte on the serial EEPROM line,
3094 * driving the clock to send each bit. The function then
3095 * reverses transmission direction and reads an acknowledge
3096 * bit.
3097 *
3098 **************************************************************/
3099
3100 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3101 {
3102 int err;
3103 u8 place;
3104 u16 sio;
3105
3106 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3107 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3108
3109 /* Assume clock is low, tx is enabled; */
3110 for (place = 0x80; place != 0; place >>= 1) {
3111 if (place & data)
3112 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3113 else
3114 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3115 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3116 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3117 }
3118 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3119 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3120 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3121 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3122 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3123
3124 if ((!err) && stop) {
3125 /* STOP, raise data while clock is high */
3126 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3127 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3128 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3129 }
3130
3131 return err;
3132
3133 }
3134
3135
3136
3137
3138 /***************************************************************
3139 * tlan_ee_receive_byte
3140 *
3141 * Returns:
3142 * Nothing
3143 * Parms:
3144 * io_base The IO port base address for the
3145 * TLAN device with the EEPROM to
3146 * use.
3147 * data An address to a char to hold the
3148 * data sent from the EEPROM.
3149 * stop If TLAN_EEPROM_STOP is passed, a
3150 * stop cycle is sent after the
3151 * byte is received, and no ack is
3152 * sent.
3153 *
3154 * This function receives 8 bits of data from the EEPROM
3155 * over the serial link. It then sends and ack bit, or no
3156 * ack and a stop bit. This function is used to retrieve
3157 * data after the address of a byte in the EEPROM has been
3158 * sent.
3159 *
3160 **************************************************************/
3161
3162 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3163 {
3164 u8 place;
3165 u16 sio;
3166
3167 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3168 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3169 *data = 0;
3170
3171 /* Assume clock is low, tx is enabled; */
3172 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3173 for (place = 0x80; place; place >>= 1) {
3174 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3175 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3176 *data |= place;
3177 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3178 }
3179
3180 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3181 if (!stop) {
3182 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3183 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3184 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3185 } else {
3186 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3187 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3188 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3189 /* STOP, raise data while clock is high */
3190 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3191 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3192 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3193 }
3194
3195 }
3196
3197
3198
3199
3200 /***************************************************************
3201 * tlan_ee_read_byte
3202 *
3203 * Returns:
3204 * No error = 0, else, the stage at which the error
3205 * occurred.
3206 * Parms:
3207 * io_base The IO port base address for the
3208 * TLAN device with the EEPROM to
3209 * use.
3210 * ee_addr The address of the byte in the
3211 * EEPROM whose contents are to be
3212 * retrieved.
3213 * data An address to a char to hold the
3214 * data obtained from the EEPROM.
3215 *
3216 * This function reads a byte of information from an byte
3217 * cell in the EEPROM.
3218 *
3219 **************************************************************/
3220
3221 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3222 {
3223 int err;
3224 struct tlan_priv *priv = netdev_priv(dev);
3225 unsigned long flags = 0;
3226 int ret = 0;
3227
3228 spin_lock_irqsave(&priv->lock, flags);
3229
3230 tlan_ee_send_start(dev->base_addr);
3231 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3232 if (err) {
3233 ret = 1;
3234 goto fail;
3235 }
3236 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3237 if (err) {
3238 ret = 2;
3239 goto fail;
3240 }
3241 tlan_ee_send_start(dev->base_addr);
3242 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3243 if (err) {
3244 ret = 3;
3245 goto fail;
3246 }
3247 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3248 fail:
3249 spin_unlock_irqrestore(&priv->lock, flags);
3250
3251 return ret;
3252
3253 }
3254
3255
3256