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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / net / ethernet / ti / tlan.c
blob62b19be5183d3349433ee5855ad082b1560b5c69
1 /*******************************************************************************
2 *
3 * Linux ThunderLAN Driver
4 *
5 * tlan.c
6 * by James Banks
7 *
8 * (C) 1997-1998 Caldera, Inc.
9 * (C) 1998 James Banks
10 * (C) 1999-2001 Torben Mathiasen
11 * (C) 2002 Samuel Chessman
12 *
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License, incorporated herein by reference.
15 *
16 ** Useful (if not required) reading:
17 *
18 * Texas Instruments, ThunderLAN Programmer's Guide,
19 * TI Literature Number SPWU013A
20 * available in PDF format from www.ti.com
21 * Level One, LXT901 and LXT970 Data Sheets
22 * available in PDF format from www.level1.com
23 * National Semiconductor, DP83840A Data Sheet
24 * available in PDF format from www.national.com
25 * Microchip Technology, 24C01A/02A/04A Data Sheet
26 * available in PDF format from www.microchip.com
27 *
28 ******************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/hardirq.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/interrupt.h>
36 #include <linux/ioport.h>
37 #include <linux/eisa.h>
38 #include <linux/pci.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/delay.h>
43 #include <linux/spinlock.h>
44 #include <linux/workqueue.h>
45 #include <linux/mii.h>
46
47 #include "tlan.h"
48
49
50 /* For removing EISA devices */
51 static struct net_device *tlan_eisa_devices;
52
53 static int tlan_devices_installed;
54
55 /* Set speed, duplex and aui settings */
56 static int aui[MAX_TLAN_BOARDS];
57 static int duplex[MAX_TLAN_BOARDS];
58 static int speed[MAX_TLAN_BOARDS];
59 static int boards_found;
60 module_param_array(aui, int, NULL, 0);
61 module_param_array(duplex, int, NULL, 0);
62 module_param_array(speed, int, NULL, 0);
63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64 MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
67
68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70 MODULE_LICENSE("GPL");
71
72
73 /* Define this to enable Link beat monitoring */
74 #undef MONITOR
75
76 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
77 static int debug;
78 module_param(debug, int, 0);
79 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
80
81 static const char tlan_signature[] = "TLAN";
82 static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
83 static int tlan_have_pci;
84 static int tlan_have_eisa;
85
86 static const char * const media[] = {
87 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
88 "100BaseTx-FD", "100BaseT4", NULL
89 };
90
91 static struct board {
92 const char *device_label;
93 u32 flags;
94 u16 addr_ofs;
95 } board_info[] = {
96 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
97 { "Compaq Netelligent 10/100 TX PCI UTP",
98 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
99 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
100 { "Compaq NetFlex-3/P",
101 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
102 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
103 { "Compaq Netelligent Integrated 10/100 TX UTP",
104 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
105 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
106 TLAN_ADAPTER_NONE, 0x83 },
107 { "Compaq Netelligent 10/100 TX Embedded UTP",
108 TLAN_ADAPTER_NONE, 0x83 },
109 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
110 { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
111 { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
112 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
113 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
114 { "Compaq NetFlex-3/E",
115 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
116 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
117 { "Compaq NetFlex-3/E",
118 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
119 };
120
121 static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = {
122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
136 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
142 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
146 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
147 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
148 { 0,}
149 };
150 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
151
152 static void tlan_eisa_probe(void);
153 static void tlan_eisa_cleanup(void);
154 static int tlan_init(struct net_device *);
155 static int tlan_open(struct net_device *dev);
156 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
157 static irqreturn_t tlan_handle_interrupt(int, void *);
158 static int tlan_close(struct net_device *);
159 static struct net_device_stats *tlan_get_stats(struct net_device *);
160 static void tlan_set_multicast_list(struct net_device *);
161 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
162 static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
163 int irq, int rev, const struct pci_device_id *ent);
164 static void tlan_tx_timeout(struct net_device *dev);
165 static void tlan_tx_timeout_work(struct work_struct *work);
166 static int tlan_init_one(struct pci_dev *pdev,
167 const struct pci_device_id *ent);
168
169 static u32 tlan_handle_tx_eof(struct net_device *, u16);
170 static u32 tlan_handle_stat_overflow(struct net_device *, u16);
171 static u32 tlan_handle_rx_eof(struct net_device *, u16);
172 static u32 tlan_handle_dummy(struct net_device *, u16);
173 static u32 tlan_handle_tx_eoc(struct net_device *, u16);
174 static u32 tlan_handle_status_check(struct net_device *, u16);
175 static u32 tlan_handle_rx_eoc(struct net_device *, u16);
176
177 static void tlan_timer(unsigned long);
178
179 static void tlan_reset_lists(struct net_device *);
180 static void tlan_free_lists(struct net_device *);
181 static void tlan_print_dio(u16);
182 static void tlan_print_list(struct tlan_list *, char *, int);
183 static void tlan_read_and_clear_stats(struct net_device *, int);
184 static void tlan_reset_adapter(struct net_device *);
185 static void tlan_finish_reset(struct net_device *);
186 static void tlan_set_mac(struct net_device *, int areg, char *mac);
187
188 static void tlan_phy_print(struct net_device *);
189 static void tlan_phy_detect(struct net_device *);
190 static void tlan_phy_power_down(struct net_device *);
191 static void tlan_phy_power_up(struct net_device *);
192 static void tlan_phy_reset(struct net_device *);
193 static void tlan_phy_start_link(struct net_device *);
194 static void tlan_phy_finish_auto_neg(struct net_device *);
195 #ifdef MONITOR
196 static void tlan_phy_monitor(struct net_device *);
197 #endif
198
199 /*
200 static int tlan_phy_nop(struct net_device *);
201 static int tlan_phy_internal_check(struct net_device *);
202 static int tlan_phy_internal_service(struct net_device *);
203 static int tlan_phy_dp83840a_check(struct net_device *);
204 */
205
206 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
207 static void tlan_mii_send_data(u16, u32, unsigned);
208 static void tlan_mii_sync(u16);
209 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
210
211 static void tlan_ee_send_start(u16);
212 static int tlan_ee_send_byte(u16, u8, int);
213 static void tlan_ee_receive_byte(u16, u8 *, int);
214 static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
215
216
217 static inline void
218 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
219 {
220 unsigned long addr = (unsigned long)skb;
221 tag->buffer[9].address = addr;
222 tag->buffer[8].address = upper_32_bits(addr);
223 }
224
225 static inline struct sk_buff *
226 tlan_get_skb(const struct tlan_list *tag)
227 {
228 unsigned long addr;
229
230 addr = tag->buffer[9].address;
231 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
232 return (struct sk_buff *) addr;
233 }
234
235 static u32
236 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
237 NULL,
238 tlan_handle_tx_eof,
239 tlan_handle_stat_overflow,
240 tlan_handle_rx_eof,
241 tlan_handle_dummy,
242 tlan_handle_tx_eoc,
243 tlan_handle_status_check,
244 tlan_handle_rx_eoc
245 };
246
247 static inline void
248 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
249 {
250 struct tlan_priv *priv = netdev_priv(dev);
251 unsigned long flags = 0;
252
253 if (!in_irq())
254 spin_lock_irqsave(&priv->lock, flags);
255 if (priv->timer.function != NULL &&
256 priv->timer_type != TLAN_TIMER_ACTIVITY) {
257 if (!in_irq())
258 spin_unlock_irqrestore(&priv->lock, flags);
259 return;
260 }
261 priv->timer.function = tlan_timer;
262 if (!in_irq())
263 spin_unlock_irqrestore(&priv->lock, flags);
264
265 priv->timer.data = (unsigned long) dev;
266 priv->timer_set_at = jiffies;
267 priv->timer_type = type;
268 mod_timer(&priv->timer, jiffies + ticks);
269
270 }
271
272
273 /*****************************************************************************
274 ******************************************************************************
275
276 ThunderLAN driver primary functions
277
278 these functions are more or less common to all linux network drivers.
279
280 ******************************************************************************
281 *****************************************************************************/
282
283
284
285
286
287 /***************************************************************
288 * tlan_remove_one
289 *
290 * Returns:
291 * Nothing
292 * Parms:
293 * None
294 *
295 * Goes through the TLanDevices list and frees the device
296 * structs and memory associated with each device (lists
297 * and buffers). It also ureserves the IO port regions
298 * associated with this device.
299 *
300 **************************************************************/
301
302
303 static void tlan_remove_one(struct pci_dev *pdev)
304 {
305 struct net_device *dev = pci_get_drvdata(pdev);
306 struct tlan_priv *priv = netdev_priv(dev);
307
308 unregister_netdev(dev);
309
310 if (priv->dma_storage) {
311 pci_free_consistent(priv->pci_dev,
312 priv->dma_size, priv->dma_storage,
313 priv->dma_storage_dma);
314 }
315
316 #ifdef CONFIG_PCI
317 pci_release_regions(pdev);
318 #endif
319
320 free_netdev(dev);
321
322 cancel_work_sync(&priv->tlan_tqueue);
323 }
324
325 static void tlan_start(struct net_device *dev)
326 {
327 tlan_reset_lists(dev);
328 /* NOTE: It might not be necessary to read the stats before a
329 reset if you don't care what the values are.
330 */
331 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
332 tlan_reset_adapter(dev);
333 netif_wake_queue(dev);
334 }
335
336 static void tlan_stop(struct net_device *dev)
337 {
338 struct tlan_priv *priv = netdev_priv(dev);
339
340 tlan_read_and_clear_stats(dev, TLAN_RECORD);
341 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
342 /* Reset and power down phy */
343 tlan_reset_adapter(dev);
344 if (priv->timer.function != NULL) {
345 del_timer_sync(&priv->timer);
346 priv->timer.function = NULL;
347 }
348 }
349
350 #ifdef CONFIG_PM
351
352 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
353 {
354 struct net_device *dev = pci_get_drvdata(pdev);
355
356 if (netif_running(dev))
357 tlan_stop(dev);
358
359 netif_device_detach(dev);
360 pci_save_state(pdev);
361 pci_disable_device(pdev);
362 pci_wake_from_d3(pdev, false);
363 pci_set_power_state(pdev, PCI_D3hot);
364
365 return 0;
366 }
367
368 static int tlan_resume(struct pci_dev *pdev)
369 {
370 struct net_device *dev = pci_get_drvdata(pdev);
371
372 pci_set_power_state(pdev, PCI_D0);
373 pci_restore_state(pdev);
374 pci_enable_wake(pdev, PCI_D0, 0);
375 netif_device_attach(dev);
376
377 if (netif_running(dev))
378 tlan_start(dev);
379
380 return 0;
381 }
382
383 #else /* CONFIG_PM */
384
385 #define tlan_suspend NULL
386 #define tlan_resume NULL
387
388 #endif /* CONFIG_PM */
389
390
391 static struct pci_driver tlan_driver = {
392 .name = "tlan",
393 .id_table = tlan_pci_tbl,
394 .probe = tlan_init_one,
395 .remove = tlan_remove_one,
396 .suspend = tlan_suspend,
397 .resume = tlan_resume,
398 };
399
400 static int __init tlan_probe(void)
401 {
402 int rc = -ENODEV;
403
404 pr_info("%s", tlan_banner);
405
406 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
407
408 /* Use new style PCI probing. Now the kernel will
409 do most of this for us */
410 rc = pci_register_driver(&tlan_driver);
411
412 if (rc != 0) {
413 pr_err("Could not register pci driver\n");
414 goto err_out_pci_free;
415 }
416
417 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
418 tlan_eisa_probe();
419
420 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
421 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
422 tlan_have_pci, tlan_have_eisa);
423
424 if (tlan_devices_installed == 0) {
425 rc = -ENODEV;
426 goto err_out_pci_unreg;
427 }
428 return 0;
429
430 err_out_pci_unreg:
431 pci_unregister_driver(&tlan_driver);
432 err_out_pci_free:
433 return rc;
434 }
435
436
437 static int tlan_init_one(struct pci_dev *pdev,
438 const struct pci_device_id *ent)
439 {
440 return tlan_probe1(pdev, -1, -1, 0, ent);
441 }
442
443
444 /*
445 ***************************************************************
446 * tlan_probe1
447 *
448 * Returns:
449 * 0 on success, error code on error
450 * Parms:
451 * none
452 *
453 * The name is lower case to fit in with all the rest of
454 * the netcard_probe names. This function looks for
455 * another TLan based adapter, setting it up with the
456 * allocated device struct if one is found.
457 * tlan_probe has been ported to the new net API and
458 * now allocates its own device structure. This function
459 * is also used by modules.
460 *
461 **************************************************************/
462
463 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
464 const struct pci_device_id *ent)
465 {
466
467 struct net_device *dev;
468 struct tlan_priv *priv;
469 u16 device_id;
470 int reg, rc = -ENODEV;
471
472 #ifdef CONFIG_PCI
473 if (pdev) {
474 rc = pci_enable_device(pdev);
475 if (rc)
476 return rc;
477
478 rc = pci_request_regions(pdev, tlan_signature);
479 if (rc) {
480 pr_err("Could not reserve IO regions\n");
481 goto err_out;
482 }
483 }
484 #endif /* CONFIG_PCI */
485
486 dev = alloc_etherdev(sizeof(struct tlan_priv));
487 if (dev == NULL) {
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 if (device_id == 0x20F1) {
536 priv->adapter = &board_info[13]; /* NetFlex-3/E */
537 priv->adapter_rev = 23; /* TLAN 2.3 */
538 } else {
539 priv->adapter = &board_info[14];
540 priv->adapter_rev = 10; /* TLAN 1.0 */
541 }
542 dev->base_addr = ioaddr;
543 dev->irq = irq;
544 }
545
546 /* Kernel parameters */
547 if (dev->mem_start) {
548 priv->aui = dev->mem_start & 0x01;
549 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
550 : (dev->mem_start & 0x06) >> 1;
551 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
552 : (dev->mem_start & 0x18) >> 3;
553
554 if (priv->speed == 0x1)
555 priv->speed = TLAN_SPEED_10;
556 else if (priv->speed == 0x2)
557 priv->speed = TLAN_SPEED_100;
558
559 debug = priv->debug = dev->mem_end;
560 } else {
561 priv->aui = aui[boards_found];
562 priv->speed = speed[boards_found];
563 priv->duplex = duplex[boards_found];
564 priv->debug = debug;
565 }
566
567 /* This will be used when we get an adapter error from
568 * within our irq handler */
569 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
570
571 spin_lock_init(&priv->lock);
572
573 rc = tlan_init(dev);
574 if (rc) {
575 pr_err("Could not set up device\n");
576 goto err_out_free_dev;
577 }
578
579 rc = register_netdev(dev);
580 if (rc) {
581 pr_err("Could not register device\n");
582 goto err_out_uninit;
583 }
584
585
586 tlan_devices_installed++;
587 boards_found++;
588
589 /* pdev is NULL if this is an EISA device */
590 if (pdev)
591 tlan_have_pci++;
592 else {
593 priv->next_device = tlan_eisa_devices;
594 tlan_eisa_devices = dev;
595 tlan_have_eisa++;
596 }
597
598 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
599 (int)dev->irq,
600 (int)dev->base_addr,
601 priv->adapter->device_label,
602 priv->adapter_rev);
603 return 0;
604
605 err_out_uninit:
606 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
607 priv->dma_storage_dma);
608 err_out_free_dev:
609 free_netdev(dev);
610 err_out_regions:
611 #ifdef CONFIG_PCI
612 if (pdev)
613 pci_release_regions(pdev);
614 #endif
615 err_out:
616 if (pdev)
617 pci_disable_device(pdev);
618 return rc;
619 }
620
621
622 static void tlan_eisa_cleanup(void)
623 {
624 struct net_device *dev;
625 struct tlan_priv *priv;
626
627 while (tlan_have_eisa) {
628 dev = tlan_eisa_devices;
629 priv = netdev_priv(dev);
630 if (priv->dma_storage) {
631 pci_free_consistent(priv->pci_dev, priv->dma_size,
632 priv->dma_storage,
633 priv->dma_storage_dma);
634 }
635 release_region(dev->base_addr, 0x10);
636 unregister_netdev(dev);
637 tlan_eisa_devices = priv->next_device;
638 free_netdev(dev);
639 tlan_have_eisa--;
640 }
641 }
642
643
644 static void __exit tlan_exit(void)
645 {
646 pci_unregister_driver(&tlan_driver);
647
648 if (tlan_have_eisa)
649 tlan_eisa_cleanup();
650
651 }
652
653
654 /* Module loading/unloading */
655 module_init(tlan_probe);
656 module_exit(tlan_exit);
657
658
659
660 /**************************************************************
661 * tlan_eisa_probe
662 *
663 * Returns: 0 on success, 1 otherwise
664 *
665 * Parms: None
666 *
667 *
668 * This functions probes for EISA devices and calls
669 * TLan_probe1 when one is found.
670 *
671 *************************************************************/
672
673 static void __init tlan_eisa_probe(void)
674 {
675 long ioaddr;
676 int rc = -ENODEV;
677 int irq;
678 u16 device_id;
679
680 if (!EISA_bus) {
681 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
682 return;
683 }
684
685 /* Loop through all slots of the EISA bus */
686 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
687
688 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
689 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
690 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
691 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
692
693
694 TLAN_DBG(TLAN_DEBUG_PROBE,
695 "Probing for EISA adapter at IO: 0x%4x : ",
696 (int) ioaddr);
697 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
698 goto out;
699
700 if (inw(ioaddr + EISA_ID) != 0x110E) {
701 release_region(ioaddr, 0x10);
702 goto out;
703 }
704
705 device_id = inw(ioaddr + EISA_ID2);
706 if (device_id != 0x20F1 && device_id != 0x40F1) {
707 release_region(ioaddr, 0x10);
708 goto out;
709 }
710
711 /* check if adapter is enabled */
712 if (inb(ioaddr + EISA_CR) != 0x1) {
713 release_region(ioaddr, 0x10);
714 goto out2;
715 }
716
717 if (debug == 0x10)
718 pr_info("Found one\n");
719
720
721 /* Get irq from board */
722 switch (inb(ioaddr + 0xcc0)) {
723 case(0x10):
724 irq = 5;
725 break;
726 case(0x20):
727 irq = 9;
728 break;
729 case(0x40):
730 irq = 10;
731 break;
732 case(0x80):
733 irq = 11;
734 break;
735 default:
736 goto out;
737 }
738
739
740 /* Setup the newly found eisa adapter */
741 rc = tlan_probe1(NULL, ioaddr, irq,
742 12, NULL);
743 continue;
744
745 out:
746 if (debug == 0x10)
747 pr_info("None found\n");
748 continue;
749
750 out2:
751 if (debug == 0x10)
752 pr_info("Card found but it is not enabled, skipping\n");
753 continue;
754
755 }
756
757 }
758
759 #ifdef CONFIG_NET_POLL_CONTROLLER
760 static void tlan_poll(struct net_device *dev)
761 {
762 disable_irq(dev->irq);
763 tlan_handle_interrupt(dev->irq, dev);
764 enable_irq(dev->irq);
765 }
766 #endif
767
768 static const struct net_device_ops tlan_netdev_ops = {
769 .ndo_open = tlan_open,
770 .ndo_stop = tlan_close,
771 .ndo_start_xmit = tlan_start_tx,
772 .ndo_tx_timeout = tlan_tx_timeout,
773 .ndo_get_stats = tlan_get_stats,
774 .ndo_set_rx_mode = tlan_set_multicast_list,
775 .ndo_do_ioctl = tlan_ioctl,
776 .ndo_change_mtu = eth_change_mtu,
777 .ndo_set_mac_address = eth_mac_addr,
778 .ndo_validate_addr = eth_validate_addr,
779 #ifdef CONFIG_NET_POLL_CONTROLLER
780 .ndo_poll_controller = tlan_poll,
781 #endif
782 };
783
784
785
786 /***************************************************************
787 * tlan_init
788 *
789 * Returns:
790 * 0 on success, error code otherwise.
791 * Parms:
792 * dev The structure of the device to be
793 * init'ed.
794 *
795 * This function completes the initialization of the
796 * device structure and driver. It reserves the IO
797 * addresses, allocates memory for the lists and bounce
798 * buffers, retrieves the MAC address from the eeprom
799 * and assignes the device's methods.
800 *
801 **************************************************************/
802
803 static int tlan_init(struct net_device *dev)
804 {
805 int dma_size;
806 int err;
807 int i;
808 struct tlan_priv *priv;
809
810 priv = netdev_priv(dev);
811
812 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
813 * (sizeof(struct tlan_list));
814 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
815 dma_size,
816 &priv->dma_storage_dma);
817 priv->dma_size = dma_size;
818
819 if (priv->dma_storage == NULL) {
820 pr_err("Could not allocate lists and buffers for %s\n",
821 dev->name);
822 return -ENOMEM;
823 }
824 memset(priv->dma_storage, 0, dma_size);
825 priv->rx_list = (struct tlan_list *)
826 ALIGN((unsigned long)priv->dma_storage, 8);
827 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
828 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
829 priv->tx_list_dma =
830 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
831
832 err = 0;
833 for (i = 0; i < 6 ; i++)
834 err |= tlan_ee_read_byte(dev,
835 (u8) priv->adapter->addr_ofs + i,
836 (u8 *) &dev->dev_addr[i]);
837 if (err) {
838 pr_err("%s: Error reading MAC from eeprom: %d\n",
839 dev->name, err);
840 }
841 dev->addr_len = 6;
842
843 netif_carrier_off(dev);
844
845 /* Device methods */
846 dev->netdev_ops = &tlan_netdev_ops;
847 dev->watchdog_timeo = TX_TIMEOUT;
848
849 return 0;
850
851 }
852
853
854
855
856 /***************************************************************
857 * tlan_open
858 *
859 * Returns:
860 * 0 on success, error code otherwise.
861 * Parms:
862 * dev Structure of device to be opened.
863 *
864 * This routine puts the driver and TLAN adapter in a
865 * state where it is ready to send and receive packets.
866 * It allocates the IRQ, resets and brings the adapter
867 * out of reset, and allows interrupts. It also delays
868 * the startup for autonegotiation or sends a Rx GO
869 * command to the adapter, as appropriate.
870 *
871 **************************************************************/
872
873 static int tlan_open(struct net_device *dev)
874 {
875 struct tlan_priv *priv = netdev_priv(dev);
876 int err;
877
878 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
879 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
880 dev->name, dev);
881
882 if (err) {
883 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
884 dev->irq);
885 return err;
886 }
887
888 init_timer(&priv->timer);
889
890 tlan_start(dev);
891
892 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
893 dev->name, priv->tlan_rev);
894
895 return 0;
896
897 }
898
899
900
901 /**************************************************************
902 * tlan_ioctl
903 *
904 * Returns:
905 * 0 on success, error code otherwise
906 * Params:
907 * dev structure of device to receive ioctl.
908 *
909 * rq ifreq structure to hold userspace data.
910 *
911 * cmd ioctl command.
912 *
913 *
914 *************************************************************/
915
916 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
917 {
918 struct tlan_priv *priv = netdev_priv(dev);
919 struct mii_ioctl_data *data = if_mii(rq);
920 u32 phy = priv->phy[priv->phy_num];
921
922 if (!priv->phy_online)
923 return -EAGAIN;
924
925 switch (cmd) {
926 case SIOCGMIIPHY: /* get address of MII PHY in use. */
927 data->phy_id = phy;
928
929
930 case SIOCGMIIREG: /* read MII PHY register. */
931 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
932 data->reg_num & 0x1f, &data->val_out);
933 return 0;
934
935
936 case SIOCSMIIREG: /* write MII PHY register. */
937 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
938 data->reg_num & 0x1f, data->val_in);
939 return 0;
940 default:
941 return -EOPNOTSUPP;
942 }
943 }
944
945
946 /***************************************************************
947 * tlan_tx_timeout
948 *
949 * Returns: nothing
950 *
951 * Params:
952 * dev structure of device which timed out
953 * during transmit.
954 *
955 **************************************************************/
956
957 static void tlan_tx_timeout(struct net_device *dev)
958 {
959
960 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
961
962 /* Ok so we timed out, lets see what we can do about it...*/
963 tlan_free_lists(dev);
964 tlan_reset_lists(dev);
965 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
966 tlan_reset_adapter(dev);
967 dev->trans_start = jiffies; /* prevent tx timeout */
968 netif_wake_queue(dev);
969
970 }
971
972
973 /***************************************************************
974 * tlan_tx_timeout_work
975 *
976 * Returns: nothing
977 *
978 * Params:
979 * work work item of device which timed out
980 *
981 **************************************************************/
982
983 static void tlan_tx_timeout_work(struct work_struct *work)
984 {
985 struct tlan_priv *priv =
986 container_of(work, struct tlan_priv, tlan_tqueue);
987
988 tlan_tx_timeout(priv->dev);
989 }
990
991
992
993 /***************************************************************
994 * tlan_start_tx
995 *
996 * Returns:
997 * 0 on success, non-zero on failure.
998 * Parms:
999 * skb A pointer to the sk_buff containing the
1000 * frame to be sent.
1001 * dev The device to send the data on.
1002 *
1003 * This function adds a frame to the Tx list to be sent
1004 * ASAP. First it verifies that the adapter is ready and
1005 * there is room in the queue. Then it sets up the next
1006 * available list, copies the frame to the corresponding
1007 * buffer. If the adapter Tx channel is idle, it gives
1008 * the adapter a Tx Go command on the list, otherwise it
1009 * sets the forward address of the previous list to point
1010 * to this one. Then it frees the sk_buff.
1011 *
1012 **************************************************************/
1013
1014 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1015 {
1016 struct tlan_priv *priv = netdev_priv(dev);
1017 dma_addr_t tail_list_phys;
1018 struct tlan_list *tail_list;
1019 unsigned long flags;
1020 unsigned int txlen;
1021
1022 if (!priv->phy_online) {
1023 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1024 dev->name);
1025 dev_kfree_skb_any(skb);
1026 return NETDEV_TX_OK;
1027 }
1028
1029 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1030 return NETDEV_TX_OK;
1031 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1032
1033 tail_list = priv->tx_list + priv->tx_tail;
1034 tail_list_phys =
1035 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1036
1037 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1038 TLAN_DBG(TLAN_DEBUG_TX,
1039 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1040 dev->name, priv->tx_head, priv->tx_tail);
1041 netif_stop_queue(dev);
1042 priv->tx_busy_count++;
1043 return NETDEV_TX_BUSY;
1044 }
1045
1046 tail_list->forward = 0;
1047
1048 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1049 skb->data, txlen,
1050 PCI_DMA_TODEVICE);
1051 tlan_store_skb(tail_list, skb);
1052
1053 tail_list->frame_size = (u16) txlen;
1054 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1055 tail_list->buffer[1].count = 0;
1056 tail_list->buffer[1].address = 0;
1057
1058 spin_lock_irqsave(&priv->lock, flags);
1059 tail_list->c_stat = TLAN_CSTAT_READY;
1060 if (!priv->tx_in_progress) {
1061 priv->tx_in_progress = 1;
1062 TLAN_DBG(TLAN_DEBUG_TX,
1063 "TRANSMIT: Starting TX on buffer %d\n",
1064 priv->tx_tail);
1065 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1066 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1067 } else {
1068 TLAN_DBG(TLAN_DEBUG_TX,
1069 "TRANSMIT: Adding buffer %d to TX channel\n",
1070 priv->tx_tail);
1071 if (priv->tx_tail == 0) {
1072 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1073 = tail_list_phys;
1074 } else {
1075 (priv->tx_list + (priv->tx_tail - 1))->forward
1076 = tail_list_phys;
1077 }
1078 }
1079 spin_unlock_irqrestore(&priv->lock, flags);
1080
1081 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1082
1083 return NETDEV_TX_OK;
1084
1085 }
1086
1087
1088
1089
1090 /***************************************************************
1091 * tlan_handle_interrupt
1092 *
1093 * Returns:
1094 * Nothing
1095 * Parms:
1096 * irq The line on which the interrupt
1097 * occurred.
1098 * dev_id A pointer to the device assigned to
1099 * this irq line.
1100 *
1101 * This function handles an interrupt generated by its
1102 * assigned TLAN adapter. The function deactivates
1103 * interrupts on its adapter, records the type of
1104 * interrupt, executes the appropriate subhandler, and
1105 * acknowdges the interrupt to the adapter (thus
1106 * re-enabling adapter interrupts.
1107 *
1108 **************************************************************/
1109
1110 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1111 {
1112 struct net_device *dev = dev_id;
1113 struct tlan_priv *priv = netdev_priv(dev);
1114 u16 host_int;
1115 u16 type;
1116
1117 spin_lock(&priv->lock);
1118
1119 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1120 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1121 if (type) {
1122 u32 ack;
1123 u32 host_cmd;
1124
1125 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1126 ack = tlan_int_vector[type](dev, host_int);
1127
1128 if (ack) {
1129 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1130 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1131 }
1132 }
1133
1134 spin_unlock(&priv->lock);
1135
1136 return IRQ_RETVAL(type);
1137 }
1138
1139
1140
1141
1142 /***************************************************************
1143 * tlan_close
1144 *
1145 * Returns:
1146 * An error code.
1147 * Parms:
1148 * dev The device structure of the device to
1149 * close.
1150 *
1151 * This function shuts down the adapter. It records any
1152 * stats, puts the adapter into reset state, deactivates
1153 * its time as needed, and frees the irq it is using.
1154 *
1155 **************************************************************/
1156
1157 static int tlan_close(struct net_device *dev)
1158 {
1159 struct tlan_priv *priv = netdev_priv(dev);
1160
1161 priv->neg_be_verbose = 0;
1162 tlan_stop(dev);
1163
1164 free_irq(dev->irq, dev);
1165 tlan_free_lists(dev);
1166 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1167
1168 return 0;
1169
1170 }
1171
1172
1173
1174
1175 /***************************************************************
1176 * tlan_get_stats
1177 *
1178 * Returns:
1179 * A pointer to the device's statistics structure.
1180 * Parms:
1181 * dev The device structure to return the
1182 * stats for.
1183 *
1184 * This function updates the devices statistics by reading
1185 * the TLAN chip's onboard registers. Then it returns the
1186 * address of the statistics structure.
1187 *
1188 **************************************************************/
1189
1190 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1191 {
1192 struct tlan_priv *priv = netdev_priv(dev);
1193 int i;
1194
1195 /* Should only read stats if open ? */
1196 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1197
1198 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1199 priv->rx_eoc_count);
1200 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1201 priv->tx_busy_count);
1202 if (debug & TLAN_DEBUG_GNRL) {
1203 tlan_print_dio(dev->base_addr);
1204 tlan_phy_print(dev);
1205 }
1206 if (debug & TLAN_DEBUG_LIST) {
1207 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1208 tlan_print_list(priv->rx_list + i, "RX", i);
1209 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1210 tlan_print_list(priv->tx_list + i, "TX", i);
1211 }
1212
1213 return &dev->stats;
1214
1215 }
1216
1217
1218
1219
1220 /***************************************************************
1221 * tlan_set_multicast_list
1222 *
1223 * Returns:
1224 * Nothing
1225 * Parms:
1226 * dev The device structure to set the
1227 * multicast list for.
1228 *
1229 * This function sets the TLAN adaptor to various receive
1230 * modes. If the IFF_PROMISC flag is set, promiscuous
1231 * mode is acitviated. Otherwise, promiscuous mode is
1232 * turned off. If the IFF_ALLMULTI flag is set, then
1233 * the hash table is set to receive all group addresses.
1234 * Otherwise, the first three multicast addresses are
1235 * stored in AREG_1-3, and the rest are selected via the
1236 * hash table, as necessary.
1237 *
1238 **************************************************************/
1239
1240 static void tlan_set_multicast_list(struct net_device *dev)
1241 {
1242 struct netdev_hw_addr *ha;
1243 u32 hash1 = 0;
1244 u32 hash2 = 0;
1245 int i;
1246 u32 offset;
1247 u8 tmp;
1248
1249 if (dev->flags & IFF_PROMISC) {
1250 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1251 tlan_dio_write8(dev->base_addr,
1252 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1253 } else {
1254 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1255 tlan_dio_write8(dev->base_addr,
1256 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1257 if (dev->flags & IFF_ALLMULTI) {
1258 for (i = 0; i < 3; i++)
1259 tlan_set_mac(dev, i + 1, NULL);
1260 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1261 0xffffffff);
1262 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1263 0xffffffff);
1264 } else {
1265 i = 0;
1266 netdev_for_each_mc_addr(ha, dev) {
1267 if (i < 3) {
1268 tlan_set_mac(dev, i + 1,
1269 (char *) &ha->addr);
1270 } else {
1271 offset =
1272 tlan_hash_func((u8 *)&ha->addr);
1273 if (offset < 32)
1274 hash1 |= (1 << offset);
1275 else
1276 hash2 |= (1 << (offset - 32));
1277 }
1278 i++;
1279 }
1280 for ( ; i < 3; i++)
1281 tlan_set_mac(dev, i + 1, NULL);
1282 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1283 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1284 }
1285 }
1286
1287 }
1288
1289
1290
1291 /*****************************************************************************
1292 ******************************************************************************
1293
1294 ThunderLAN driver interrupt vectors and table
1295
1296 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1297 Programmer's Guide" for more informations on handling interrupts
1298 generated by TLAN based adapters.
1299
1300 ******************************************************************************
1301 *****************************************************************************/
1302
1303
1304
1305
1306 /***************************************************************
1307 * tlan_handle_tx_eof
1308 *
1309 * Returns:
1310 * 1
1311 * Parms:
1312 * dev Device assigned the IRQ that was
1313 * raised.
1314 * host_int The contents of the HOST_INT
1315 * port.
1316 *
1317 * This function handles Tx EOF interrupts which are raised
1318 * by the adapter when it has completed sending the
1319 * contents of a buffer. If detemines which list/buffer
1320 * was completed and resets it. If the buffer was the last
1321 * in the channel (EOC), then the function checks to see if
1322 * another buffer is ready to send, and if so, sends a Tx
1323 * Go command. Finally, the driver activates/continues the
1324 * activity LED.
1325 *
1326 **************************************************************/
1327
1328 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1329 {
1330 struct tlan_priv *priv = netdev_priv(dev);
1331 int eoc = 0;
1332 struct tlan_list *head_list;
1333 dma_addr_t head_list_phys;
1334 u32 ack = 0;
1335 u16 tmp_c_stat;
1336
1337 TLAN_DBG(TLAN_DEBUG_TX,
1338 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1339 priv->tx_head, priv->tx_tail);
1340 head_list = priv->tx_list + priv->tx_head;
1341
1342 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1343 && (ack < 255)) {
1344 struct sk_buff *skb = tlan_get_skb(head_list);
1345
1346 ack++;
1347 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1348 max(skb->len,
1349 (unsigned int)TLAN_MIN_FRAME_SIZE),
1350 PCI_DMA_TODEVICE);
1351 dev_kfree_skb_any(skb);
1352 head_list->buffer[8].address = 0;
1353 head_list->buffer[9].address = 0;
1354
1355 if (tmp_c_stat & TLAN_CSTAT_EOC)
1356 eoc = 1;
1357
1358 dev->stats.tx_bytes += head_list->frame_size;
1359
1360 head_list->c_stat = TLAN_CSTAT_UNUSED;
1361 netif_start_queue(dev);
1362 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1363 head_list = priv->tx_list + priv->tx_head;
1364 }
1365
1366 if (!ack)
1367 netdev_info(dev,
1368 "Received interrupt for uncompleted TX frame\n");
1369
1370 if (eoc) {
1371 TLAN_DBG(TLAN_DEBUG_TX,
1372 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1373 priv->tx_head, priv->tx_tail);
1374 head_list = priv->tx_list + priv->tx_head;
1375 head_list_phys = priv->tx_list_dma
1376 + sizeof(struct tlan_list)*priv->tx_head;
1377 if ((head_list->c_stat & TLAN_CSTAT_READY)
1378 == TLAN_CSTAT_READY) {
1379 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1380 ack |= TLAN_HC_GO;
1381 } else {
1382 priv->tx_in_progress = 0;
1383 }
1384 }
1385
1386 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1387 tlan_dio_write8(dev->base_addr,
1388 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1389 if (priv->timer.function == NULL) {
1390 priv->timer.function = tlan_timer;
1391 priv->timer.data = (unsigned long) dev;
1392 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1393 priv->timer_set_at = jiffies;
1394 priv->timer_type = TLAN_TIMER_ACTIVITY;
1395 add_timer(&priv->timer);
1396 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1397 priv->timer_set_at = jiffies;
1398 }
1399 }
1400
1401 return ack;
1402
1403 }
1404
1405
1406
1407
1408 /***************************************************************
1409 * TLan_HandleStatOverflow
1410 *
1411 * Returns:
1412 * 1
1413 * Parms:
1414 * dev Device assigned the IRQ that was
1415 * raised.
1416 * host_int The contents of the HOST_INT
1417 * port.
1418 *
1419 * This function handles the Statistics Overflow interrupt
1420 * which means that one or more of the TLAN statistics
1421 * registers has reached 1/2 capacity and needs to be read.
1422 *
1423 **************************************************************/
1424
1425 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1426 {
1427 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1428
1429 return 1;
1430
1431 }
1432
1433
1434
1435
1436 /***************************************************************
1437 * TLan_HandleRxEOF
1438 *
1439 * Returns:
1440 * 1
1441 * Parms:
1442 * dev Device assigned the IRQ that was
1443 * raised.
1444 * host_int The contents of the HOST_INT
1445 * port.
1446 *
1447 * This function handles the Rx EOF interrupt which
1448 * indicates a frame has been received by the adapter from
1449 * the net and the frame has been transferred to memory.
1450 * The function determines the bounce buffer the frame has
1451 * been loaded into, creates a new sk_buff big enough to
1452 * hold the frame, and sends it to protocol stack. It
1453 * then resets the used buffer and appends it to the end
1454 * of the list. If the frame was the last in the Rx
1455 * channel (EOC), the function restarts the receive channel
1456 * by sending an Rx Go command to the adapter. Then it
1457 * activates/continues the activity LED.
1458 *
1459 **************************************************************/
1460
1461 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1462 {
1463 struct tlan_priv *priv = netdev_priv(dev);
1464 u32 ack = 0;
1465 int eoc = 0;
1466 struct tlan_list *head_list;
1467 struct sk_buff *skb;
1468 struct tlan_list *tail_list;
1469 u16 tmp_c_stat;
1470 dma_addr_t head_list_phys;
1471
1472 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1473 priv->rx_head, priv->rx_tail);
1474 head_list = priv->rx_list + priv->rx_head;
1475 head_list_phys =
1476 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1477
1478 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1479 && (ack < 255)) {
1480 dma_addr_t frame_dma = head_list->buffer[0].address;
1481 u32 frame_size = head_list->frame_size;
1482 struct sk_buff *new_skb;
1483
1484 ack++;
1485 if (tmp_c_stat & TLAN_CSTAT_EOC)
1486 eoc = 1;
1487
1488 new_skb = netdev_alloc_skb_ip_align(dev,
1489 TLAN_MAX_FRAME_SIZE + 5);
1490 if (!new_skb)
1491 goto drop_and_reuse;
1492
1493 skb = tlan_get_skb(head_list);
1494 pci_unmap_single(priv->pci_dev, frame_dma,
1495 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1496 skb_put(skb, frame_size);
1497
1498 dev->stats.rx_bytes += frame_size;
1499
1500 skb->protocol = eth_type_trans(skb, dev);
1501 netif_rx(skb);
1502
1503 head_list->buffer[0].address =
1504 pci_map_single(priv->pci_dev, new_skb->data,
1505 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1506
1507 tlan_store_skb(head_list, new_skb);
1508 drop_and_reuse:
1509 head_list->forward = 0;
1510 head_list->c_stat = 0;
1511 tail_list = priv->rx_list + priv->rx_tail;
1512 tail_list->forward = head_list_phys;
1513
1514 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1515 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1516 head_list = priv->rx_list + priv->rx_head;
1517 head_list_phys = priv->rx_list_dma
1518 + sizeof(struct tlan_list)*priv->rx_head;
1519 }
1520
1521 if (!ack)
1522 netdev_info(dev,
1523 "Received interrupt for uncompleted RX frame\n");
1524
1525
1526 if (eoc) {
1527 TLAN_DBG(TLAN_DEBUG_RX,
1528 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1529 priv->rx_head, priv->rx_tail);
1530 head_list = priv->rx_list + priv->rx_head;
1531 head_list_phys = priv->rx_list_dma
1532 + sizeof(struct tlan_list)*priv->rx_head;
1533 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1534 ack |= TLAN_HC_GO | TLAN_HC_RT;
1535 priv->rx_eoc_count++;
1536 }
1537
1538 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1539 tlan_dio_write8(dev->base_addr,
1540 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1541 if (priv->timer.function == NULL) {
1542 priv->timer.function = tlan_timer;
1543 priv->timer.data = (unsigned long) dev;
1544 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1545 priv->timer_set_at = jiffies;
1546 priv->timer_type = TLAN_TIMER_ACTIVITY;
1547 add_timer(&priv->timer);
1548 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1549 priv->timer_set_at = jiffies;
1550 }
1551 }
1552
1553 return ack;
1554
1555 }
1556
1557
1558
1559
1560 /***************************************************************
1561 * tlan_handle_dummy
1562 *
1563 * Returns:
1564 * 1
1565 * Parms:
1566 * dev Device assigned the IRQ that was
1567 * raised.
1568 * host_int The contents of the HOST_INT
1569 * port.
1570 *
1571 * This function handles the Dummy interrupt, which is
1572 * raised whenever a test interrupt is generated by setting
1573 * the Req_Int bit of HOST_CMD to 1.
1574 *
1575 **************************************************************/
1576
1577 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1578 {
1579 netdev_info(dev, "Test interrupt\n");
1580 return 1;
1581
1582 }
1583
1584
1585
1586
1587 /***************************************************************
1588 * tlan_handle_tx_eoc
1589 *
1590 * Returns:
1591 * 1
1592 * Parms:
1593 * dev Device assigned the IRQ that was
1594 * raised.
1595 * host_int The contents of the HOST_INT
1596 * port.
1597 *
1598 * This driver is structured to determine EOC occurrences by
1599 * reading the CSTAT member of the list structure. Tx EOC
1600 * interrupts are disabled via the DIO INTDIS register.
1601 * However, TLAN chips before revision 3.0 didn't have this
1602 * functionality, so process EOC events if this is the
1603 * case.
1604 *
1605 **************************************************************/
1606
1607 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1608 {
1609 struct tlan_priv *priv = netdev_priv(dev);
1610 struct tlan_list *head_list;
1611 dma_addr_t head_list_phys;
1612 u32 ack = 1;
1613
1614 host_int = 0;
1615 if (priv->tlan_rev < 0x30) {
1616 TLAN_DBG(TLAN_DEBUG_TX,
1617 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1618 priv->tx_head, priv->tx_tail);
1619 head_list = priv->tx_list + priv->tx_head;
1620 head_list_phys = priv->tx_list_dma
1621 + sizeof(struct tlan_list)*priv->tx_head;
1622 if ((head_list->c_stat & TLAN_CSTAT_READY)
1623 == TLAN_CSTAT_READY) {
1624 netif_stop_queue(dev);
1625 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1626 ack |= TLAN_HC_GO;
1627 } else {
1628 priv->tx_in_progress = 0;
1629 }
1630 }
1631
1632 return ack;
1633
1634 }
1635
1636
1637
1638
1639 /***************************************************************
1640 * tlan_handle_status_check
1641 *
1642 * Returns:
1643 * 0 if Adapter check, 1 if Network Status check.
1644 * Parms:
1645 * dev Device assigned the IRQ that was
1646 * raised.
1647 * host_int The contents of the HOST_INT
1648 * port.
1649 *
1650 * This function handles Adapter Check/Network Status
1651 * interrupts generated by the adapter. It checks the
1652 * vector in the HOST_INT register to determine if it is
1653 * an Adapter Check interrupt. If so, it resets the
1654 * adapter. Otherwise it clears the status registers
1655 * and services the PHY.
1656 *
1657 **************************************************************/
1658
1659 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1660 {
1661 struct tlan_priv *priv = netdev_priv(dev);
1662 u32 ack;
1663 u32 error;
1664 u8 net_sts;
1665 u32 phy;
1666 u16 tlphy_ctl;
1667 u16 tlphy_sts;
1668
1669 ack = 1;
1670 if (host_int & TLAN_HI_IV_MASK) {
1671 netif_stop_queue(dev);
1672 error = inl(dev->base_addr + TLAN_CH_PARM);
1673 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1674 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1675 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1676
1677 schedule_work(&priv->tlan_tqueue);
1678
1679 netif_wake_queue(dev);
1680 ack = 0;
1681 } else {
1682 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1683 phy = priv->phy[priv->phy_num];
1684
1685 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1686 if (net_sts) {
1687 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1688 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1689 dev->name, (unsigned) net_sts);
1690 }
1691 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1692 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1693 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1694 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1695 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1696 tlphy_ctl |= TLAN_TC_SWAPOL;
1697 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1698 tlphy_ctl);
1699 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1700 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1701 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1702 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1703 tlphy_ctl);
1704 }
1705
1706 if (debug)
1707 tlan_phy_print(dev);
1708 }
1709 }
1710
1711 return ack;
1712
1713 }
1714
1715
1716
1717
1718 /***************************************************************
1719 * tlan_handle_rx_eoc
1720 *
1721 * Returns:
1722 * 1
1723 * Parms:
1724 * dev Device assigned the IRQ that was
1725 * raised.
1726 * host_int The contents of the HOST_INT
1727 * port.
1728 *
1729 * This driver is structured to determine EOC occurrences by
1730 * reading the CSTAT member of the list structure. Rx EOC
1731 * interrupts are disabled via the DIO INTDIS register.
1732 * However, TLAN chips before revision 3.0 didn't have this
1733 * CSTAT member or a INTDIS register, so if this chip is
1734 * pre-3.0, process EOC interrupts normally.
1735 *
1736 **************************************************************/
1737
1738 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1739 {
1740 struct tlan_priv *priv = netdev_priv(dev);
1741 dma_addr_t head_list_phys;
1742 u32 ack = 1;
1743
1744 if (priv->tlan_rev < 0x30) {
1745 TLAN_DBG(TLAN_DEBUG_RX,
1746 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1747 priv->rx_head, priv->rx_tail);
1748 head_list_phys = priv->rx_list_dma
1749 + sizeof(struct tlan_list)*priv->rx_head;
1750 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1751 ack |= TLAN_HC_GO | TLAN_HC_RT;
1752 priv->rx_eoc_count++;
1753 }
1754
1755 return ack;
1756
1757 }
1758
1759
1760
1761
1762 /*****************************************************************************
1763 ******************************************************************************
1764
1765 ThunderLAN driver timer function
1766
1767 ******************************************************************************
1768 *****************************************************************************/
1769
1770
1771 /***************************************************************
1772 * tlan_timer
1773 *
1774 * Returns:
1775 * Nothing
1776 * Parms:
1777 * data A value given to add timer when
1778 * add_timer was called.
1779 *
1780 * This function handles timed functionality for the
1781 * TLAN driver. The two current timer uses are for
1782 * delaying for autonegotionation and driving the ACT LED.
1783 * - Autonegotiation requires being allowed about
1784 * 2 1/2 seconds before attempting to transmit a
1785 * packet. It would be a very bad thing to hang
1786 * the kernel this long, so the driver doesn't
1787 * allow transmission 'til after this time, for
1788 * certain PHYs. It would be much nicer if all
1789 * PHYs were interrupt-capable like the internal
1790 * PHY.
1791 * - The ACT LED, which shows adapter activity, is
1792 * driven by the driver, and so must be left on
1793 * for a short period to power up the LED so it
1794 * can be seen. This delay can be changed by
1795 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1796 * if desired. 100 ms produces a slightly
1797 * sluggish response.
1798 *
1799 **************************************************************/
1800
1801 static void tlan_timer(unsigned long data)
1802 {
1803 struct net_device *dev = (struct net_device *) data;
1804 struct tlan_priv *priv = netdev_priv(dev);
1805 u32 elapsed;
1806 unsigned long flags = 0;
1807
1808 priv->timer.function = NULL;
1809
1810 switch (priv->timer_type) {
1811 #ifdef MONITOR
1812 case TLAN_TIMER_LINK_BEAT:
1813 tlan_phy_monitor(dev);
1814 break;
1815 #endif
1816 case TLAN_TIMER_PHY_PDOWN:
1817 tlan_phy_power_down(dev);
1818 break;
1819 case TLAN_TIMER_PHY_PUP:
1820 tlan_phy_power_up(dev);
1821 break;
1822 case TLAN_TIMER_PHY_RESET:
1823 tlan_phy_reset(dev);
1824 break;
1825 case TLAN_TIMER_PHY_START_LINK:
1826 tlan_phy_start_link(dev);
1827 break;
1828 case TLAN_TIMER_PHY_FINISH_AN:
1829 tlan_phy_finish_auto_neg(dev);
1830 break;
1831 case TLAN_TIMER_FINISH_RESET:
1832 tlan_finish_reset(dev);
1833 break;
1834 case TLAN_TIMER_ACTIVITY:
1835 spin_lock_irqsave(&priv->lock, flags);
1836 if (priv->timer.function == NULL) {
1837 elapsed = jiffies - priv->timer_set_at;
1838 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1839 tlan_dio_write8(dev->base_addr,
1840 TLAN_LED_REG, TLAN_LED_LINK);
1841 } else {
1842 priv->timer.function = tlan_timer;
1843 priv->timer.expires = priv->timer_set_at
1844 + TLAN_TIMER_ACT_DELAY;
1845 spin_unlock_irqrestore(&priv->lock, flags);
1846 add_timer(&priv->timer);
1847 break;
1848 }
1849 }
1850 spin_unlock_irqrestore(&priv->lock, flags);
1851 break;
1852 default:
1853 break;
1854 }
1855
1856 }
1857
1858
1859
1860
1861 /*****************************************************************************
1862 ******************************************************************************
1863
1864 ThunderLAN driver adapter related routines
1865
1866 ******************************************************************************
1867 *****************************************************************************/
1868
1869
1870 /***************************************************************
1871 * tlan_reset_lists
1872 *
1873 * Returns:
1874 * Nothing
1875 * Parms:
1876 * dev The device structure with the list
1877 * stuctures to be reset.
1878 *
1879 * This routine sets the variables associated with managing
1880 * the TLAN lists to their initial values.
1881 *
1882 **************************************************************/
1883
1884 static void tlan_reset_lists(struct net_device *dev)
1885 {
1886 struct tlan_priv *priv = netdev_priv(dev);
1887 int i;
1888 struct tlan_list *list;
1889 dma_addr_t list_phys;
1890 struct sk_buff *skb;
1891
1892 priv->tx_head = 0;
1893 priv->tx_tail = 0;
1894 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1895 list = priv->tx_list + i;
1896 list->c_stat = TLAN_CSTAT_UNUSED;
1897 list->buffer[0].address = 0;
1898 list->buffer[2].count = 0;
1899 list->buffer[2].address = 0;
1900 list->buffer[8].address = 0;
1901 list->buffer[9].address = 0;
1902 }
1903
1904 priv->rx_head = 0;
1905 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1906 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1907 list = priv->rx_list + i;
1908 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1909 list->c_stat = TLAN_CSTAT_READY;
1910 list->frame_size = TLAN_MAX_FRAME_SIZE;
1911 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1912 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1913 if (!skb)
1914 break;
1915
1916 list->buffer[0].address = pci_map_single(priv->pci_dev,
1917 skb->data,
1918 TLAN_MAX_FRAME_SIZE,
1919 PCI_DMA_FROMDEVICE);
1920 tlan_store_skb(list, skb);
1921 list->buffer[1].count = 0;
1922 list->buffer[1].address = 0;
1923 list->forward = list_phys + sizeof(struct tlan_list);
1924 }
1925
1926 /* in case ran out of memory early, clear bits */
1927 while (i < TLAN_NUM_RX_LISTS) {
1928 tlan_store_skb(priv->rx_list + i, NULL);
1929 ++i;
1930 }
1931 list->forward = 0;
1932
1933 }
1934
1935
1936 static void tlan_free_lists(struct net_device *dev)
1937 {
1938 struct tlan_priv *priv = netdev_priv(dev);
1939 int i;
1940 struct tlan_list *list;
1941 struct sk_buff *skb;
1942
1943 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1944 list = priv->tx_list + i;
1945 skb = tlan_get_skb(list);
1946 if (skb) {
1947 pci_unmap_single(
1948 priv->pci_dev,
1949 list->buffer[0].address,
1950 max(skb->len,
1951 (unsigned int)TLAN_MIN_FRAME_SIZE),
1952 PCI_DMA_TODEVICE);
1953 dev_kfree_skb_any(skb);
1954 list->buffer[8].address = 0;
1955 list->buffer[9].address = 0;
1956 }
1957 }
1958
1959 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1960 list = priv->rx_list + i;
1961 skb = tlan_get_skb(list);
1962 if (skb) {
1963 pci_unmap_single(priv->pci_dev,
1964 list->buffer[0].address,
1965 TLAN_MAX_FRAME_SIZE,
1966 PCI_DMA_FROMDEVICE);
1967 dev_kfree_skb_any(skb);
1968 list->buffer[8].address = 0;
1969 list->buffer[9].address = 0;
1970 }
1971 }
1972 }
1973
1974
1975
1976
1977 /***************************************************************
1978 * tlan_print_dio
1979 *
1980 * Returns:
1981 * Nothing
1982 * Parms:
1983 * io_base Base IO port of the device of
1984 * which to print DIO registers.
1985 *
1986 * This function prints out all the internal (DIO)
1987 * registers of a TLAN chip.
1988 *
1989 **************************************************************/
1990
1991 static void tlan_print_dio(u16 io_base)
1992 {
1993 u32 data0, data1;
1994 int i;
1995
1996 pr_info("Contents of internal registers for io base 0x%04hx\n",
1997 io_base);
1998 pr_info("Off. +0 +4\n");
1999 for (i = 0; i < 0x4C; i += 8) {
2000 data0 = tlan_dio_read32(io_base, i);
2001 data1 = tlan_dio_read32(io_base, i + 0x4);
2002 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2003 }
2004
2005 }
2006
2007
2008
2009
2010 /***************************************************************
2011 * TLan_PrintList
2012 *
2013 * Returns:
2014 * Nothing
2015 * Parms:
2016 * list A pointer to the struct tlan_list structure to
2017 * be printed.
2018 * type A string to designate type of list,
2019 * "Rx" or "Tx".
2020 * num The index of the list.
2021 *
2022 * This function prints out the contents of the list
2023 * pointed to by the list parameter.
2024 *
2025 **************************************************************/
2026
2027 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2028 {
2029 int i;
2030
2031 pr_info("%s List %d at %p\n", type, num, list);
2032 pr_info(" Forward = 0x%08x\n", list->forward);
2033 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2034 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2035 /* for (i = 0; i < 10; i++) { */
2036 for (i = 0; i < 2; i++) {
2037 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2038 i, list->buffer[i].count, list->buffer[i].address);
2039 }
2040
2041 }
2042
2043
2044
2045
2046 /***************************************************************
2047 * tlan_read_and_clear_stats
2048 *
2049 * Returns:
2050 * Nothing
2051 * Parms:
2052 * dev Pointer to device structure of adapter
2053 * to which to read stats.
2054 * record Flag indicating whether to add
2055 *
2056 * This functions reads all the internal status registers
2057 * of the TLAN chip, which clears them as a side effect.
2058 * It then either adds the values to the device's status
2059 * struct, or discards them, depending on whether record
2060 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2061 *
2062 **************************************************************/
2063
2064 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2065 {
2066 u32 tx_good, tx_under;
2067 u32 rx_good, rx_over;
2068 u32 def_tx, crc, code;
2069 u32 multi_col, single_col;
2070 u32 excess_col, late_col, loss;
2071
2072 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2073 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2074 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2075 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2076 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2077
2078 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2079 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2080 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2081 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2082 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2083
2084 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2085 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2086 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2087 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2088 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2089
2090 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2091 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2092 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2093 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2094 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2095
2096 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2097 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2098 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2099 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2100
2101 if (record) {
2102 dev->stats.rx_packets += rx_good;
2103 dev->stats.rx_errors += rx_over + crc + code;
2104 dev->stats.tx_packets += tx_good;
2105 dev->stats.tx_errors += tx_under + loss;
2106 dev->stats.collisions += multi_col
2107 + single_col + excess_col + late_col;
2108
2109 dev->stats.rx_over_errors += rx_over;
2110 dev->stats.rx_crc_errors += crc;
2111 dev->stats.rx_frame_errors += code;
2112
2113 dev->stats.tx_aborted_errors += tx_under;
2114 dev->stats.tx_carrier_errors += loss;
2115 }
2116
2117 }
2118
2119
2120
2121
2122 /***************************************************************
2123 * TLan_Reset
2124 *
2125 * Returns:
2126 * 0
2127 * Parms:
2128 * dev Pointer to device structure of adapter
2129 * to be reset.
2130 *
2131 * This function resets the adapter and it's physical
2132 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2133 * Programmer's Guide" for details. The routine tries to
2134 * implement what is detailed there, though adjustments
2135 * have been made.
2136 *
2137 **************************************************************/
2138
2139 static void
2140 tlan_reset_adapter(struct net_device *dev)
2141 {
2142 struct tlan_priv *priv = netdev_priv(dev);
2143 int i;
2144 u32 addr;
2145 u32 data;
2146 u8 data8;
2147
2148 priv->tlan_full_duplex = false;
2149 priv->phy_online = 0;
2150 netif_carrier_off(dev);
2151
2152 /* 1. Assert reset bit. */
2153
2154 data = inl(dev->base_addr + TLAN_HOST_CMD);
2155 data |= TLAN_HC_AD_RST;
2156 outl(data, dev->base_addr + TLAN_HOST_CMD);
2157
2158 udelay(1000);
2159
2160 /* 2. Turn off interrupts. (Probably isn't necessary) */
2161
2162 data = inl(dev->base_addr + TLAN_HOST_CMD);
2163 data |= TLAN_HC_INT_OFF;
2164 outl(data, dev->base_addr + TLAN_HOST_CMD);
2165
2166 /* 3. Clear AREGs and HASHs. */
2167
2168 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2169 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2170
2171 /* 4. Setup NetConfig register. */
2172
2173 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2174 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2175
2176 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2177
2178 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2179 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2180
2181 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2182
2183 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2184 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2185 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2186
2187 /* 7. Setup the remaining registers. */
2188
2189 if (priv->tlan_rev >= 0x30) {
2190 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2191 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2192 }
2193 tlan_phy_detect(dev);
2194 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2195
2196 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2197 data |= TLAN_NET_CFG_BIT;
2198 if (priv->aui == 1) {
2199 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2200 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2201 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2202 priv->tlan_full_duplex = true;
2203 } else {
2204 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2205 }
2206 }
2207
2208 if (priv->phy_num == 0)
2209 data |= TLAN_NET_CFG_PHY_EN;
2210 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2211
2212 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2213 tlan_finish_reset(dev);
2214 else
2215 tlan_phy_power_down(dev);
2216
2217 }
2218
2219
2220
2221
2222 static void
2223 tlan_finish_reset(struct net_device *dev)
2224 {
2225 struct tlan_priv *priv = netdev_priv(dev);
2226 u8 data;
2227 u32 phy;
2228 u8 sio;
2229 u16 status;
2230 u16 partner;
2231 u16 tlphy_ctl;
2232 u16 tlphy_par;
2233 u16 tlphy_id1, tlphy_id2;
2234 int i;
2235
2236 phy = priv->phy[priv->phy_num];
2237
2238 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2239 if (priv->tlan_full_duplex)
2240 data |= TLAN_NET_CMD_DUPLEX;
2241 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2242 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2243 if (priv->phy_num == 0)
2244 data |= TLAN_NET_MASK_MASK7;
2245 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2246 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2247 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2248 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2249
2250 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2251 (priv->aui)) {
2252 status = MII_GS_LINK;
2253 netdev_info(dev, "Link forced\n");
2254 } else {
2255 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2256 udelay(1000);
2257 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2258 if ((status & MII_GS_LINK) &&
2259 /* We only support link info on Nat.Sem. PHY's */
2260 (tlphy_id1 == NAT_SEM_ID1) &&
2261 (tlphy_id2 == NAT_SEM_ID2)) {
2262 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
2263 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);
2264
2265 netdev_info(dev,
2266 "Link active with %s %uMbps %s-Duplex\n",
2267 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2268 ? "forced" : "Autonegotiation enabled,",
2269 tlphy_par & TLAN_PHY_SPEED_100
2270 ? 100 : 10,
2271 tlphy_par & TLAN_PHY_DUPLEX_FULL
2272 ? "Full" : "Half");
2273
2274 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2275 netdev_info(dev, "Partner capability:");
2276 for (i = 5; i < 10; i++)
2277 if (partner & (1 << i))
2278 pr_cont(" %s", media[i-5]);
2279 pr_cont("\n");
2280 }
2281
2282 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2283 TLAN_LED_LINK);
2284 #ifdef MONITOR
2285 /* We have link beat..for now anyway */
2286 priv->link = 1;
2287 /*Enabling link beat monitoring */
2288 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2289 #endif
2290 } else if (status & MII_GS_LINK) {
2291 netdev_info(dev, "Link active\n");
2292 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2293 TLAN_LED_LINK);
2294 }
2295 }
2296
2297 if (priv->phy_num == 0) {
2298 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2299 tlphy_ctl |= TLAN_TC_INTEN;
2300 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2301 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2302 sio |= TLAN_NET_SIO_MINTEN;
2303 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2304 }
2305
2306 if (status & MII_GS_LINK) {
2307 tlan_set_mac(dev, 0, dev->dev_addr);
2308 priv->phy_online = 1;
2309 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2310 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2311 outb((TLAN_HC_REQ_INT >> 8),
2312 dev->base_addr + TLAN_HOST_CMD + 1);
2313 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2314 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2315 netif_carrier_on(dev);
2316 } else {
2317 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2318 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2319 return;
2320 }
2321 tlan_set_multicast_list(dev);
2322
2323 }
2324
2325
2326
2327
2328 /***************************************************************
2329 * tlan_set_mac
2330 *
2331 * Returns:
2332 * Nothing
2333 * Parms:
2334 * dev Pointer to device structure of adapter
2335 * on which to change the AREG.
2336 * areg The AREG to set the address in (0 - 3).
2337 * mac A pointer to an array of chars. Each
2338 * element stores one byte of the address.
2339 * IE, it isn't in ascii.
2340 *
2341 * This function transfers a MAC address to one of the
2342 * TLAN AREGs (address registers). The TLAN chip locks
2343 * the register on writing to offset 0 and unlocks the
2344 * register after writing to offset 5. If NULL is passed
2345 * in mac, then the AREG is filled with 0's.
2346 *
2347 **************************************************************/
2348
2349 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2350 {
2351 int i;
2352
2353 areg *= 6;
2354
2355 if (mac != NULL) {
2356 for (i = 0; i < 6; i++)
2357 tlan_dio_write8(dev->base_addr,
2358 TLAN_AREG_0 + areg + i, mac[i]);
2359 } else {
2360 for (i = 0; i < 6; i++)
2361 tlan_dio_write8(dev->base_addr,
2362 TLAN_AREG_0 + areg + i, 0);
2363 }
2364
2365 }
2366
2367
2368
2369
2370 /*****************************************************************************
2371 ******************************************************************************
2372
2373 ThunderLAN driver PHY layer routines
2374
2375 ******************************************************************************
2376 *****************************************************************************/
2377
2378
2379
2380 /*********************************************************************
2381 * tlan_phy_print
2382 *
2383 * Returns:
2384 * Nothing
2385 * Parms:
2386 * dev A pointer to the device structure of the
2387 * TLAN device having the PHYs to be detailed.
2388 *
2389 * This function prints the registers a PHY (aka transceiver).
2390 *
2391 ********************************************************************/
2392
2393 static void tlan_phy_print(struct net_device *dev)
2394 {
2395 struct tlan_priv *priv = netdev_priv(dev);
2396 u16 i, data0, data1, data2, data3, phy;
2397
2398 phy = priv->phy[priv->phy_num];
2399
2400 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2401 netdev_info(dev, "Unmanaged PHY\n");
2402 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2403 netdev_info(dev, "PHY 0x%02x\n", phy);
2404 pr_info(" Off. +0 +1 +2 +3\n");
2405 for (i = 0; i < 0x20; i += 4) {
2406 tlan_mii_read_reg(dev, phy, i, &data0);
2407 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2408 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2409 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2410 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2411 i, data0, data1, data2, data3);
2412 }
2413 } else {
2414 netdev_info(dev, "Invalid PHY\n");
2415 }
2416
2417 }
2418
2419
2420
2421
2422 /*********************************************************************
2423 * tlan_phy_detect
2424 *
2425 * Returns:
2426 * Nothing
2427 * Parms:
2428 * dev A pointer to the device structure of the adapter
2429 * for which the PHY needs determined.
2430 *
2431 * So far I've found that adapters which have external PHYs
2432 * may also use the internal PHY for part of the functionality.
2433 * (eg, AUI/Thinnet). This function finds out if this TLAN
2434 * chip has an internal PHY, and then finds the first external
2435 * PHY (starting from address 0) if it exists).
2436 *
2437 ********************************************************************/
2438
2439 static void tlan_phy_detect(struct net_device *dev)
2440 {
2441 struct tlan_priv *priv = netdev_priv(dev);
2442 u16 control;
2443 u16 hi;
2444 u16 lo;
2445 u32 phy;
2446
2447 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2448 priv->phy_num = 0xffff;
2449 return;
2450 }
2451
2452 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2453
2454 if (hi != 0xffff)
2455 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2456 else
2457 priv->phy[0] = TLAN_PHY_NONE;
2458
2459 priv->phy[1] = TLAN_PHY_NONE;
2460 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2461 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2462 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2463 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2464 if ((control != 0xffff) ||
2465 (hi != 0xffff) || (lo != 0xffff)) {
2466 TLAN_DBG(TLAN_DEBUG_GNRL,
2467 "PHY found at %02x %04x %04x %04x\n",
2468 phy, control, hi, lo);
2469 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2470 (phy != TLAN_PHY_MAX_ADDR)) {
2471 priv->phy[1] = phy;
2472 }
2473 }
2474 }
2475
2476 if (priv->phy[1] != TLAN_PHY_NONE)
2477 priv->phy_num = 1;
2478 else if (priv->phy[0] != TLAN_PHY_NONE)
2479 priv->phy_num = 0;
2480 else
2481 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2482
2483 }
2484
2485
2486
2487
2488 static void tlan_phy_power_down(struct net_device *dev)
2489 {
2490 struct tlan_priv *priv = netdev_priv(dev);
2491 u16 value;
2492
2493 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2494 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2495 tlan_mii_sync(dev->base_addr);
2496 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2497 if ((priv->phy_num == 0) &&
2498 (priv->phy[1] != TLAN_PHY_NONE) &&
2499 (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2500 tlan_mii_sync(dev->base_addr);
2501 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2502 }
2503
2504 /* Wait for 50 ms and powerup
2505 * This is abitrary. It is intended to make sure the
2506 * transceiver settles.
2507 */
2508 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2509
2510 }
2511
2512
2513
2514
2515 static void tlan_phy_power_up(struct net_device *dev)
2516 {
2517 struct tlan_priv *priv = netdev_priv(dev);
2518 u16 value;
2519
2520 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2521 tlan_mii_sync(dev->base_addr);
2522 value = MII_GC_LOOPBK;
2523 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2524 tlan_mii_sync(dev->base_addr);
2525 /* Wait for 500 ms and reset the
2526 * transceiver. The TLAN docs say both 50 ms and
2527 * 500 ms, so do the longer, just in case.
2528 */
2529 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2530
2531 }
2532
2533
2534
2535
2536 static void tlan_phy_reset(struct net_device *dev)
2537 {
2538 struct tlan_priv *priv = netdev_priv(dev);
2539 u16 phy;
2540 u16 value;
2541
2542 phy = priv->phy[priv->phy_num];
2543
2544 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2545 tlan_mii_sync(dev->base_addr);
2546 value = MII_GC_LOOPBK | MII_GC_RESET;
2547 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2548 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2549 while (value & MII_GC_RESET)
2550 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2551
2552 /* Wait for 500 ms and initialize.
2553 * I don't remember why I wait this long.
2554 * I've changed this to 50ms, as it seems long enough.
2555 */
2556 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2557
2558 }
2559
2560
2561
2562
2563 static void tlan_phy_start_link(struct net_device *dev)
2564 {
2565 struct tlan_priv *priv = netdev_priv(dev);
2566 u16 ability;
2567 u16 control;
2568 u16 data;
2569 u16 phy;
2570 u16 status;
2571 u16 tctl;
2572
2573 phy = priv->phy[priv->phy_num];
2574 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2575 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2576 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2577
2578 if ((status & MII_GS_AUTONEG) &&
2579 (!priv->aui)) {
2580 ability = status >> 11;
2581 if (priv->speed == TLAN_SPEED_10 &&
2582 priv->duplex == TLAN_DUPLEX_HALF) {
2583 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2584 } else if (priv->speed == TLAN_SPEED_10 &&
2585 priv->duplex == TLAN_DUPLEX_FULL) {
2586 priv->tlan_full_duplex = true;
2587 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2588 } else if (priv->speed == TLAN_SPEED_100 &&
2589 priv->duplex == TLAN_DUPLEX_HALF) {
2590 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2591 } else if (priv->speed == TLAN_SPEED_100 &&
2592 priv->duplex == TLAN_DUPLEX_FULL) {
2593 priv->tlan_full_duplex = true;
2594 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2595 } else {
2596
2597 /* Set Auto-Neg advertisement */
2598 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2599 (ability << 5) | 1);
2600 /* Enablee Auto-Neg */
2601 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2602 /* Restart Auto-Neg */
2603 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2604 /* Wait for 4 sec for autonegotiation
2605 * to complete. The max spec time is less than this
2606 * but the card need additional time to start AN.
2607 * .5 sec should be plenty extra.
2608 */
2609 netdev_info(dev, "Starting autonegotiation\n");
2610 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2611 return;
2612 }
2613
2614 }
2615
2616 if ((priv->aui) && (priv->phy_num != 0)) {
2617 priv->phy_num = 0;
2618 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2619 | TLAN_NET_CFG_PHY_EN;
2620 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2621 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2622 return;
2623 } else if (priv->phy_num == 0) {
2624 control = 0;
2625 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2626 if (priv->aui) {
2627 tctl |= TLAN_TC_AUISEL;
2628 } else {
2629 tctl &= ~TLAN_TC_AUISEL;
2630 if (priv->duplex == TLAN_DUPLEX_FULL) {
2631 control |= MII_GC_DUPLEX;
2632 priv->tlan_full_duplex = true;
2633 }
2634 if (priv->speed == TLAN_SPEED_100)
2635 control |= MII_GC_SPEEDSEL;
2636 }
2637 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2638 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2639 }
2640
2641 /* Wait for 2 sec to give the transceiver time
2642 * to establish link.
2643 */
2644 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2645
2646 }
2647
2648
2649
2650
2651 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2652 {
2653 struct tlan_priv *priv = netdev_priv(dev);
2654 u16 an_adv;
2655 u16 an_lpa;
2656 u16 data;
2657 u16 mode;
2658 u16 phy;
2659 u16 status;
2660
2661 phy = priv->phy[priv->phy_num];
2662
2663 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2664 udelay(1000);
2665 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2666
2667 if (!(status & MII_GS_AUTOCMPLT)) {
2668 /* Wait for 8 sec to give the process
2669 * more time. Perhaps we should fail after a while.
2670 */
2671 if (!priv->neg_be_verbose++) {
2672 pr_info("Giving autonegotiation more time.\n");
2673 pr_info("Please check that your adapter has\n");
2674 pr_info("been properly connected to a HUB or Switch.\n");
2675 pr_info("Trying to establish link in the background...\n");
2676 }
2677 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2678 return;
2679 }
2680
2681 netdev_info(dev, "Autonegotiation complete\n");
2682 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2683 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2684 mode = an_adv & an_lpa & 0x03E0;
2685 if (mode & 0x0100)
2686 priv->tlan_full_duplex = true;
2687 else if (!(mode & 0x0080) && (mode & 0x0040))
2688 priv->tlan_full_duplex = true;
2689
2690 if ((!(mode & 0x0180)) &&
2691 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2692 (priv->phy_num != 0)) {
2693 priv->phy_num = 0;
2694 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2695 | TLAN_NET_CFG_PHY_EN;
2696 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2697 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2698 return;
2699 }
2700
2701 if (priv->phy_num == 0) {
2702 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2703 (an_adv & an_lpa & 0x0040)) {
2704 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2705 MII_GC_AUTOENB | MII_GC_DUPLEX);
2706 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2707 } else {
2708 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2709 MII_GC_AUTOENB);
2710 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2711 }
2712 }
2713
2714 /* Wait for 100 ms. No reason in partiticular.
2715 */
2716 tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2717
2718 }
2719
2720 #ifdef MONITOR
2721
2722 /*********************************************************************
2723 *
2724 * tlan_phy_monitor
2725 *
2726 * Returns:
2727 * None
2728 *
2729 * Params:
2730 * dev The device structure of this device.
2731 *
2732 *
2733 * This function monitors PHY condition by reading the status
2734 * register via the MII bus. This can be used to give info
2735 * about link changes (up/down), and possible switch to alternate
2736 * media.
2737 *
2738 *******************************************************************/
2739
2740 void tlan_phy_monitor(struct net_device *dev)
2741 {
2742 struct tlan_priv *priv = netdev_priv(dev);
2743 u16 phy;
2744 u16 phy_status;
2745
2746 phy = priv->phy[priv->phy_num];
2747
2748 /* Get PHY status register */
2749 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2750
2751 /* Check if link has been lost */
2752 if (!(phy_status & MII_GS_LINK)) {
2753 if (priv->link) {
2754 priv->link = 0;
2755 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2756 dev->name);
2757 netif_carrier_off(dev);
2758 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2759 return;
2760 }
2761 }
2762
2763 /* Link restablished? */
2764 if ((phy_status & MII_GS_LINK) && !priv->link) {
2765 priv->link = 1;
2766 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2767 dev->name);
2768 netif_carrier_on(dev);
2769 }
2770
2771 /* Setup a new monitor */
2772 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2773 }
2774
2775 #endif /* MONITOR */
2776
2777
2778 /*****************************************************************************
2779 ******************************************************************************
2780
2781 ThunderLAN driver MII routines
2782
2783 these routines are based on the information in chap. 2 of the
2784 "ThunderLAN Programmer's Guide", pp. 15-24.
2785
2786 ******************************************************************************
2787 *****************************************************************************/
2788
2789
2790 /***************************************************************
2791 * tlan_mii_read_reg
2792 *
2793 * Returns:
2794 * false if ack received ok
2795 * true if no ack received or other error
2796 *
2797 * Parms:
2798 * dev The device structure containing
2799 * The io address and interrupt count
2800 * for this device.
2801 * phy The address of the PHY to be queried.
2802 * reg The register whose contents are to be
2803 * retrieved.
2804 * val A pointer to a variable to store the
2805 * retrieved value.
2806 *
2807 * This function uses the TLAN's MII bus to retrieve the contents
2808 * of a given register on a PHY. It sends the appropriate info
2809 * and then reads the 16-bit register value from the MII bus via
2810 * the TLAN SIO register.
2811 *
2812 **************************************************************/
2813
2814 static bool
2815 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2816 {
2817 u8 nack;
2818 u16 sio, tmp;
2819 u32 i;
2820 bool err;
2821 int minten;
2822 struct tlan_priv *priv = netdev_priv(dev);
2823 unsigned long flags = 0;
2824
2825 err = false;
2826 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2827 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2828
2829 if (!in_irq())
2830 spin_lock_irqsave(&priv->lock, flags);
2831
2832 tlan_mii_sync(dev->base_addr);
2833
2834 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2835 if (minten)
2836 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2837
2838 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2839 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2840 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2841 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2842
2843
2844 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2845
2846 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2847 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2848 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2849
2850 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2851 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2852 if (nack) { /* no ACK, so fake it */
2853 for (i = 0; i < 16; i++) {
2854 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2855 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2856 }
2857 tmp = 0xffff;
2858 err = true;
2859 } else { /* ACK, so read data */
2860 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2861 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2862 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2863 tmp |= i;
2864 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2865 }
2866 }
2867
2868
2869 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2870 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2871
2872 if (minten)
2873 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2874
2875 *val = tmp;
2876
2877 if (!in_irq())
2878 spin_unlock_irqrestore(&priv->lock, flags);
2879
2880 return err;
2881
2882 }
2883
2884
2885
2886
2887 /***************************************************************
2888 * tlan_mii_send_data
2889 *
2890 * Returns:
2891 * Nothing
2892 * Parms:
2893 * base_port The base IO port of the adapter in
2894 * question.
2895 * dev The address of the PHY to be queried.
2896 * data The value to be placed on the MII bus.
2897 * num_bits The number of bits in data that are to
2898 * be placed on the MII bus.
2899 *
2900 * This function sends on sequence of bits on the MII
2901 * configuration bus.
2902 *
2903 **************************************************************/
2904
2905 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2906 {
2907 u16 sio;
2908 u32 i;
2909
2910 if (num_bits == 0)
2911 return;
2912
2913 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2914 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2915 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2916
2917 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2918 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2919 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2920 if (data & i)
2921 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2922 else
2923 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2924 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2925 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2926 }
2927
2928 }
2929
2930
2931
2932
2933 /***************************************************************
2934 * TLan_MiiSync
2935 *
2936 * Returns:
2937 * Nothing
2938 * Parms:
2939 * base_port The base IO port of the adapter in
2940 * question.
2941 *
2942 * This functions syncs all PHYs in terms of the MII configuration
2943 * bus.
2944 *
2945 **************************************************************/
2946
2947 static void tlan_mii_sync(u16 base_port)
2948 {
2949 int i;
2950 u16 sio;
2951
2952 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2953 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2954
2955 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2956 for (i = 0; i < 32; i++) {
2957 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2958 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2959 }
2960
2961 }
2962
2963
2964
2965
2966 /***************************************************************
2967 * tlan_mii_write_reg
2968 *
2969 * Returns:
2970 * Nothing
2971 * Parms:
2972 * dev The device structure for the device
2973 * to write to.
2974 * phy The address of the PHY to be written to.
2975 * reg The register whose contents are to be
2976 * written.
2977 * val The value to be written to the register.
2978 *
2979 * This function uses the TLAN's MII bus to write the contents of a
2980 * given register on a PHY. It sends the appropriate info and then
2981 * writes the 16-bit register value from the MII configuration bus
2982 * via the TLAN SIO register.
2983 *
2984 **************************************************************/
2985
2986 static void
2987 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2988 {
2989 u16 sio;
2990 int minten;
2991 unsigned long flags = 0;
2992 struct tlan_priv *priv = netdev_priv(dev);
2993
2994 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2995 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2996
2997 if (!in_irq())
2998 spin_lock_irqsave(&priv->lock, flags);
2999
3000 tlan_mii_sync(dev->base_addr);
3001
3002 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3003 if (minten)
3004 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3005
3006 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3007 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3008 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3009 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3010
3011 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3012 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3013
3014 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3015 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3016
3017 if (minten)
3018 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3019
3020 if (!in_irq())
3021 spin_unlock_irqrestore(&priv->lock, flags);
3022
3023 }
3024
3025
3026
3027
3028 /*****************************************************************************
3029 ******************************************************************************
3030
3031 ThunderLAN driver eeprom routines
3032
3033 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3034 EEPROM. these functions are based on information in microchip's
3035 data sheet. I don't know how well this functions will work with
3036 other Eeproms.
3037
3038 ******************************************************************************
3039 *****************************************************************************/
3040
3041
3042 /***************************************************************
3043 * tlan_ee_send_start
3044 *
3045 * Returns:
3046 * Nothing
3047 * Parms:
3048 * io_base The IO port base address for the
3049 * TLAN device with the EEPROM to
3050 * use.
3051 *
3052 * This function sends a start cycle to an EEPROM attached
3053 * to a TLAN chip.
3054 *
3055 **************************************************************/
3056
3057 static void tlan_ee_send_start(u16 io_base)
3058 {
3059 u16 sio;
3060
3061 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3062 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3063
3064 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3065 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3066 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3067 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3068 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3069
3070 }
3071
3072
3073
3074
3075 /***************************************************************
3076 * tlan_ee_send_byte
3077 *
3078 * Returns:
3079 * If the correct ack was received, 0, otherwise 1
3080 * Parms: io_base The IO port base address for the
3081 * TLAN device with the EEPROM to
3082 * use.
3083 * data The 8 bits of information to
3084 * send to the EEPROM.
3085 * stop If TLAN_EEPROM_STOP is passed, a
3086 * stop cycle is sent after the
3087 * byte is sent after the ack is
3088 * read.
3089 *
3090 * This function sends a byte on the serial EEPROM line,
3091 * driving the clock to send each bit. The function then
3092 * reverses transmission direction and reads an acknowledge
3093 * bit.
3094 *
3095 **************************************************************/
3096
3097 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3098 {
3099 int err;
3100 u8 place;
3101 u16 sio;
3102
3103 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3104 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3105
3106 /* Assume clock is low, tx is enabled; */
3107 for (place = 0x80; place != 0; place >>= 1) {
3108 if (place & data)
3109 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3110 else
3111 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3112 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3113 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3114 }
3115 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3116 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3117 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3118 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3119 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3120
3121 if ((!err) && stop) {
3122 /* STOP, raise data while clock is high */
3123 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3124 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3125 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3126 }
3127
3128 return err;
3129
3130 }
3131
3132
3133
3134
3135 /***************************************************************
3136 * tlan_ee_receive_byte
3137 *
3138 * Returns:
3139 * Nothing
3140 * Parms:
3141 * io_base The IO port base address for the
3142 * TLAN device with the EEPROM to
3143 * use.
3144 * data An address to a char to hold the
3145 * data sent from the EEPROM.
3146 * stop If TLAN_EEPROM_STOP is passed, a
3147 * stop cycle is sent after the
3148 * byte is received, and no ack is
3149 * sent.
3150 *
3151 * This function receives 8 bits of data from the EEPROM
3152 * over the serial link. It then sends and ack bit, or no
3153 * ack and a stop bit. This function is used to retrieve
3154 * data after the address of a byte in the EEPROM has been
3155 * sent.
3156 *
3157 **************************************************************/
3158
3159 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3160 {
3161 u8 place;
3162 u16 sio;
3163
3164 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3165 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3166 *data = 0;
3167
3168 /* Assume clock is low, tx is enabled; */
3169 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3170 for (place = 0x80; place; place >>= 1) {
3171 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3172 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3173 *data |= place;
3174 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3175 }
3176
3177 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3178 if (!stop) {
3179 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3180 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3181 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3182 } else {
3183 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3184 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3185 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3186 /* STOP, raise data while clock is high */
3187 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3188 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3189 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3190 }
3191
3192 }
3193
3194
3195
3196
3197 /***************************************************************
3198 * tlan_ee_read_byte
3199 *
3200 * Returns:
3201 * No error = 0, else, the stage at which the error
3202 * occurred.
3203 * Parms:
3204 * io_base The IO port base address for the
3205 * TLAN device with the EEPROM to
3206 * use.
3207 * ee_addr The address of the byte in the
3208 * EEPROM whose contents are to be
3209 * retrieved.
3210 * data An address to a char to hold the
3211 * data obtained from the EEPROM.
3212 *
3213 * This function reads a byte of information from an byte
3214 * cell in the EEPROM.
3215 *
3216 **************************************************************/
3217
3218 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3219 {
3220 int err;
3221 struct tlan_priv *priv = netdev_priv(dev);
3222 unsigned long flags = 0;
3223 int ret = 0;
3224
3225 spin_lock_irqsave(&priv->lock, flags);
3226
3227 tlan_ee_send_start(dev->base_addr);
3228 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3229 if (err) {
3230 ret = 1;
3231 goto fail;
3232 }
3233 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3234 if (err) {
3235 ret = 2;
3236 goto fail;
3237 }
3238 tlan_ee_send_start(dev->base_addr);
3239 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3240 if (err) {
3241 ret = 3;
3242 goto fail;
3243 }
3244 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3245 fail:
3246 spin_unlock_irqrestore(&priv->lock, flags);
3247
3248 return ret;
3249
3250 }
3251
3252
3253
Linux with added FPC-III support