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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / ethernet / ti / tlan.c
blob9c0dd6b8d6c9a9e6dfae193c36d469d8573853d4
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 |= (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 __devexit 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 pci_set_drvdata(pdev, NULL);
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, 0, 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 = __devexit_p(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 __devinit 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 __devinit tlan_probe1(struct pci_dev *pdev,
464 long ioaddr, int irq, int rev,
465 const struct pci_device_id *ent)
466 {
467
468 struct net_device *dev;
469 struct tlan_priv *priv;
470 u16 device_id;
471 int reg, rc = -ENODEV;
472
473 #ifdef CONFIG_PCI
474 if (pdev) {
475 rc = pci_enable_device(pdev);
476 if (rc)
477 return rc;
478
479 rc = pci_request_regions(pdev, tlan_signature);
480 if (rc) {
481 pr_err("Could not reserve IO regions\n");
482 goto err_out;
483 }
484 }
485 #endif /* CONFIG_PCI */
486
487 dev = alloc_etherdev(sizeof(struct tlan_priv));
488 if (dev == NULL) {
489 pr_err("Could not allocate memory for device\n");
490 rc = -ENOMEM;
491 goto err_out_regions;
492 }
493 SET_NETDEV_DEV(dev, &pdev->dev);
494
495 priv = netdev_priv(dev);
496
497 priv->pci_dev = pdev;
498 priv->dev = dev;
499
500 /* Is this a PCI device? */
501 if (pdev) {
502 u32 pci_io_base = 0;
503
504 priv->adapter = &board_info[ent->driver_data];
505
506 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
507 if (rc) {
508 pr_err("No suitable PCI mapping available\n");
509 goto err_out_free_dev;
510 }
511
512 for (reg = 0; reg <= 5; reg++) {
513 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
514 pci_io_base = pci_resource_start(pdev, reg);
515 TLAN_DBG(TLAN_DEBUG_GNRL,
516 "IO mapping is available at %x.\n",
517 pci_io_base);
518 break;
519 }
520 }
521 if (!pci_io_base) {
522 pr_err("No IO mappings available\n");
523 rc = -EIO;
524 goto err_out_free_dev;
525 }
526
527 dev->base_addr = pci_io_base;
528 dev->irq = pdev->irq;
529 priv->adapter_rev = pdev->revision;
530 pci_set_master(pdev);
531 pci_set_drvdata(pdev, dev);
532
533 } else { /* EISA card */
534 /* This is a hack. We need to know which board structure
535 * is suited for this adapter */
536 device_id = inw(ioaddr + EISA_ID2);
537 priv->is_eisa = 1;
538 if (device_id == 0x20F1) {
539 priv->adapter = &board_info[13]; /* NetFlex-3/E */
540 priv->adapter_rev = 23; /* TLAN 2.3 */
541 } else {
542 priv->adapter = &board_info[14];
543 priv->adapter_rev = 10; /* TLAN 1.0 */
544 }
545 dev->base_addr = ioaddr;
546 dev->irq = irq;
547 }
548
549 /* Kernel parameters */
550 if (dev->mem_start) {
551 priv->aui = dev->mem_start & 0x01;
552 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
553 : (dev->mem_start & 0x06) >> 1;
554 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
555 : (dev->mem_start & 0x18) >> 3;
556
557 if (priv->speed == 0x1)
558 priv->speed = TLAN_SPEED_10;
559 else if (priv->speed == 0x2)
560 priv->speed = TLAN_SPEED_100;
561
562 debug = priv->debug = dev->mem_end;
563 } else {
564 priv->aui = aui[boards_found];
565 priv->speed = speed[boards_found];
566 priv->duplex = duplex[boards_found];
567 priv->debug = debug;
568 }
569
570 /* This will be used when we get an adapter error from
571 * within our irq handler */
572 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
573
574 spin_lock_init(&priv->lock);
575
576 rc = tlan_init(dev);
577 if (rc) {
578 pr_err("Could not set up device\n");
579 goto err_out_free_dev;
580 }
581
582 rc = register_netdev(dev);
583 if (rc) {
584 pr_err("Could not register device\n");
585 goto err_out_uninit;
586 }
587
588
589 tlan_devices_installed++;
590 boards_found++;
591
592 /* pdev is NULL if this is an EISA device */
593 if (pdev)
594 tlan_have_pci++;
595 else {
596 priv->next_device = tlan_eisa_devices;
597 tlan_eisa_devices = dev;
598 tlan_have_eisa++;
599 }
600
601 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
602 (int)dev->irq,
603 (int)dev->base_addr,
604 priv->adapter->device_label,
605 priv->adapter_rev);
606 return 0;
607
608 err_out_uninit:
609 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
610 priv->dma_storage_dma);
611 err_out_free_dev:
612 free_netdev(dev);
613 err_out_regions:
614 #ifdef CONFIG_PCI
615 if (pdev)
616 pci_release_regions(pdev);
617 #endif
618 err_out:
619 if (pdev)
620 pci_disable_device(pdev);
621 return rc;
622 }
623
624
625 static void tlan_eisa_cleanup(void)
626 {
627 struct net_device *dev;
628 struct tlan_priv *priv;
629
630 while (tlan_have_eisa) {
631 dev = tlan_eisa_devices;
632 priv = netdev_priv(dev);
633 if (priv->dma_storage) {
634 pci_free_consistent(priv->pci_dev, priv->dma_size,
635 priv->dma_storage,
636 priv->dma_storage_dma);
637 }
638 release_region(dev->base_addr, 0x10);
639 unregister_netdev(dev);
640 tlan_eisa_devices = priv->next_device;
641 free_netdev(dev);
642 tlan_have_eisa--;
643 }
644 }
645
646
647 static void __exit tlan_exit(void)
648 {
649 pci_unregister_driver(&tlan_driver);
650
651 if (tlan_have_eisa)
652 tlan_eisa_cleanup();
653
654 }
655
656
657 /* Module loading/unloading */
658 module_init(tlan_probe);
659 module_exit(tlan_exit);
660
661
662
663 /**************************************************************
664 * tlan_eisa_probe
665 *
666 * Returns: 0 on success, 1 otherwise
667 *
668 * Parms: None
669 *
670 *
671 * This functions probes for EISA devices and calls
672 * TLan_probe1 when one is found.
673 *
674 *************************************************************/
675
676 static void __init tlan_eisa_probe(void)
677 {
678 long ioaddr;
679 int rc = -ENODEV;
680 int irq;
681 u16 device_id;
682
683 if (!EISA_bus) {
684 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
685 return;
686 }
687
688 /* Loop through all slots of the EISA bus */
689 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
690
691 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
692 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
693 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
694 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
695
696
697 TLAN_DBG(TLAN_DEBUG_PROBE,
698 "Probing for EISA adapter at IO: 0x%4x : ",
699 (int) ioaddr);
700 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
701 goto out;
702
703 if (inw(ioaddr + EISA_ID) != 0x110E) {
704 release_region(ioaddr, 0x10);
705 goto out;
706 }
707
708 device_id = inw(ioaddr + EISA_ID2);
709 if (device_id != 0x20F1 && device_id != 0x40F1) {
710 release_region(ioaddr, 0x10);
711 goto out;
712 }
713
714 /* check if adapter is enabled */
715 if (inb(ioaddr + EISA_CR) != 0x1) {
716 release_region(ioaddr, 0x10);
717 goto out2;
718 }
719
720 if (debug == 0x10)
721 pr_info("Found one\n");
722
723
724 /* Get irq from board */
725 switch (inb(ioaddr + 0xcc0)) {
726 case(0x10):
727 irq = 5;
728 break;
729 case(0x20):
730 irq = 9;
731 break;
732 case(0x40):
733 irq = 10;
734 break;
735 case(0x80):
736 irq = 11;
737 break;
738 default:
739 goto out;
740 }
741
742
743 /* Setup the newly found eisa adapter */
744 rc = tlan_probe1(NULL, ioaddr, irq,
745 12, NULL);
746 continue;
747
748 out:
749 if (debug == 0x10)
750 pr_info("None found\n");
751 continue;
752
753 out2:
754 if (debug == 0x10)
755 pr_info("Card found but it is not enabled, skipping\n");
756 continue;
757
758 }
759
760 }
761
762 #ifdef CONFIG_NET_POLL_CONTROLLER
763 static void tlan_poll(struct net_device *dev)
764 {
765 disable_irq(dev->irq);
766 tlan_handle_interrupt(dev->irq, dev);
767 enable_irq(dev->irq);
768 }
769 #endif
770
771 static const struct net_device_ops tlan_netdev_ops = {
772 .ndo_open = tlan_open,
773 .ndo_stop = tlan_close,
774 .ndo_start_xmit = tlan_start_tx,
775 .ndo_tx_timeout = tlan_tx_timeout,
776 .ndo_get_stats = tlan_get_stats,
777 .ndo_set_rx_mode = tlan_set_multicast_list,
778 .ndo_do_ioctl = tlan_ioctl,
779 .ndo_change_mtu = eth_change_mtu,
780 .ndo_set_mac_address = eth_mac_addr,
781 .ndo_validate_addr = eth_validate_addr,
782 #ifdef CONFIG_NET_POLL_CONTROLLER
783 .ndo_poll_controller = tlan_poll,
784 #endif
785 };
786
787
788
789 /***************************************************************
790 * tlan_init
791 *
792 * Returns:
793 * 0 on success, error code otherwise.
794 * Parms:
795 * dev The structure of the device to be
796 * init'ed.
797 *
798 * This function completes the initialization of the
799 * device structure and driver. It reserves the IO
800 * addresses, allocates memory for the lists and bounce
801 * buffers, retrieves the MAC address from the eeprom
802 * and assignes the device's methods.
803 *
804 **************************************************************/
805
806 static int tlan_init(struct net_device *dev)
807 {
808 int dma_size;
809 int err;
810 int i;
811 struct tlan_priv *priv;
812
813 priv = netdev_priv(dev);
814
815 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
816 * (sizeof(struct tlan_list));
817 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
818 dma_size,
819 &priv->dma_storage_dma);
820 priv->dma_size = dma_size;
821
822 if (priv->dma_storage == NULL) {
823 pr_err("Could not allocate lists and buffers for %s\n",
824 dev->name);
825 return -ENOMEM;
826 }
827 memset(priv->dma_storage, 0, dma_size);
828 priv->rx_list = (struct tlan_list *)
829 ALIGN((unsigned long)priv->dma_storage, 8);
830 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
831 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
832 priv->tx_list_dma =
833 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
834
835 err = 0;
836 for (i = 0; i < 6 ; i++)
837 err |= tlan_ee_read_byte(dev,
838 (u8) priv->adapter->addr_ofs + i,
839 (u8 *) &dev->dev_addr[i]);
840 if (err) {
841 pr_err("%s: Error reading MAC from eeprom: %d\n",
842 dev->name, err);
843 }
844 dev->addr_len = 6;
845
846 netif_carrier_off(dev);
847
848 /* Device methods */
849 dev->netdev_ops = &tlan_netdev_ops;
850 dev->watchdog_timeo = TX_TIMEOUT;
851
852 return 0;
853
854 }
855
856
857
858
859 /***************************************************************
860 * tlan_open
861 *
862 * Returns:
863 * 0 on success, error code otherwise.
864 * Parms:
865 * dev Structure of device to be opened.
866 *
867 * This routine puts the driver and TLAN adapter in a
868 * state where it is ready to send and receive packets.
869 * It allocates the IRQ, resets and brings the adapter
870 * out of reset, and allows interrupts. It also delays
871 * the startup for autonegotiation or sends a Rx GO
872 * command to the adapter, as appropriate.
873 *
874 **************************************************************/
875
876 static int tlan_open(struct net_device *dev)
877 {
878 struct tlan_priv *priv = netdev_priv(dev);
879 int err;
880
881 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
882 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
883 dev->name, dev);
884
885 if (err) {
886 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
887 dev->irq);
888 return err;
889 }
890
891 init_timer(&priv->timer);
892
893 tlan_start(dev);
894
895 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
896 dev->name, priv->tlan_rev);
897
898 return 0;
899
900 }
901
902
903
904 /**************************************************************
905 * tlan_ioctl
906 *
907 * Returns:
908 * 0 on success, error code otherwise
909 * Params:
910 * dev structure of device to receive ioctl.
911 *
912 * rq ifreq structure to hold userspace data.
913 *
914 * cmd ioctl command.
915 *
916 *
917 *************************************************************/
918
919 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
920 {
921 struct tlan_priv *priv = netdev_priv(dev);
922 struct mii_ioctl_data *data = if_mii(rq);
923 u32 phy = priv->phy[priv->phy_num];
924
925 if (!priv->phy_online)
926 return -EAGAIN;
927
928 switch (cmd) {
929 case SIOCGMIIPHY: /* get address of MII PHY in use. */
930 data->phy_id = phy;
931
932
933 case SIOCGMIIREG: /* read MII PHY register. */
934 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
935 data->reg_num & 0x1f, &data->val_out);
936 return 0;
937
938
939 case SIOCSMIIREG: /* write MII PHY register. */
940 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
941 data->reg_num & 0x1f, data->val_in);
942 return 0;
943 default:
944 return -EOPNOTSUPP;
945 }
946 }
947
948
949 /***************************************************************
950 * tlan_tx_timeout
951 *
952 * Returns: nothing
953 *
954 * Params:
955 * dev structure of device which timed out
956 * during transmit.
957 *
958 **************************************************************/
959
960 static void tlan_tx_timeout(struct net_device *dev)
961 {
962
963 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
964
965 /* Ok so we timed out, lets see what we can do about it...*/
966 tlan_free_lists(dev);
967 tlan_reset_lists(dev);
968 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
969 tlan_reset_adapter(dev);
970 dev->trans_start = jiffies; /* prevent tx timeout */
971 netif_wake_queue(dev);
972
973 }
974
975
976 /***************************************************************
977 * tlan_tx_timeout_work
978 *
979 * Returns: nothing
980 *
981 * Params:
982 * work work item of device which timed out
983 *
984 **************************************************************/
985
986 static void tlan_tx_timeout_work(struct work_struct *work)
987 {
988 struct tlan_priv *priv =
989 container_of(work, struct tlan_priv, tlan_tqueue);
990
991 tlan_tx_timeout(priv->dev);
992 }
993
994
995
996 /***************************************************************
997 * tlan_start_tx
998 *
999 * Returns:
1000 * 0 on success, non-zero on failure.
1001 * Parms:
1002 * skb A pointer to the sk_buff containing the
1003 * frame to be sent.
1004 * dev The device to send the data on.
1005 *
1006 * This function adds a frame to the Tx list to be sent
1007 * ASAP. First it verifies that the adapter is ready and
1008 * there is room in the queue. Then it sets up the next
1009 * available list, copies the frame to the corresponding
1010 * buffer. If the adapter Tx channel is idle, it gives
1011 * the adapter a Tx Go command on the list, otherwise it
1012 * sets the forward address of the previous list to point
1013 * to this one. Then it frees the sk_buff.
1014 *
1015 **************************************************************/
1016
1017 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1018 {
1019 struct tlan_priv *priv = netdev_priv(dev);
1020 dma_addr_t tail_list_phys;
1021 struct tlan_list *tail_list;
1022 unsigned long flags;
1023 unsigned int txlen;
1024
1025 if (!priv->phy_online) {
1026 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1027 dev->name);
1028 dev_kfree_skb_any(skb);
1029 return NETDEV_TX_OK;
1030 }
1031
1032 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1033 return NETDEV_TX_OK;
1034 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1035
1036 tail_list = priv->tx_list + priv->tx_tail;
1037 tail_list_phys =
1038 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1039
1040 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1041 TLAN_DBG(TLAN_DEBUG_TX,
1042 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1043 dev->name, priv->tx_head, priv->tx_tail);
1044 netif_stop_queue(dev);
1045 priv->tx_busy_count++;
1046 return NETDEV_TX_BUSY;
1047 }
1048
1049 tail_list->forward = 0;
1050
1051 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1052 skb->data, txlen,
1053 PCI_DMA_TODEVICE);
1054 tlan_store_skb(tail_list, skb);
1055
1056 tail_list->frame_size = (u16) txlen;
1057 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1058 tail_list->buffer[1].count = 0;
1059 tail_list->buffer[1].address = 0;
1060
1061 spin_lock_irqsave(&priv->lock, flags);
1062 tail_list->c_stat = TLAN_CSTAT_READY;
1063 if (!priv->tx_in_progress) {
1064 priv->tx_in_progress = 1;
1065 TLAN_DBG(TLAN_DEBUG_TX,
1066 "TRANSMIT: Starting TX on buffer %d\n",
1067 priv->tx_tail);
1068 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1069 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1070 } else {
1071 TLAN_DBG(TLAN_DEBUG_TX,
1072 "TRANSMIT: Adding buffer %d to TX channel\n",
1073 priv->tx_tail);
1074 if (priv->tx_tail == 0) {
1075 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1076 = tail_list_phys;
1077 } else {
1078 (priv->tx_list + (priv->tx_tail - 1))->forward
1079 = tail_list_phys;
1080 }
1081 }
1082 spin_unlock_irqrestore(&priv->lock, flags);
1083
1084 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1085
1086 return NETDEV_TX_OK;
1087
1088 }
1089
1090
1091
1092
1093 /***************************************************************
1094 * tlan_handle_interrupt
1095 *
1096 * Returns:
1097 * Nothing
1098 * Parms:
1099 * irq The line on which the interrupt
1100 * occurred.
1101 * dev_id A pointer to the device assigned to
1102 * this irq line.
1103 *
1104 * This function handles an interrupt generated by its
1105 * assigned TLAN adapter. The function deactivates
1106 * interrupts on its adapter, records the type of
1107 * interrupt, executes the appropriate subhandler, and
1108 * acknowdges the interrupt to the adapter (thus
1109 * re-enabling adapter interrupts.
1110 *
1111 **************************************************************/
1112
1113 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1114 {
1115 struct net_device *dev = dev_id;
1116 struct tlan_priv *priv = netdev_priv(dev);
1117 u16 host_int;
1118 u16 type;
1119
1120 spin_lock(&priv->lock);
1121
1122 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1123 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1124 if (type) {
1125 u32 ack;
1126 u32 host_cmd;
1127
1128 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1129 ack = tlan_int_vector[type](dev, host_int);
1130
1131 if (ack) {
1132 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1133 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1134 }
1135 }
1136
1137 spin_unlock(&priv->lock);
1138
1139 return IRQ_RETVAL(type);
1140 }
1141
1142
1143
1144
1145 /***************************************************************
1146 * tlan_close
1147 *
1148 * Returns:
1149 * An error code.
1150 * Parms:
1151 * dev The device structure of the device to
1152 * close.
1153 *
1154 * This function shuts down the adapter. It records any
1155 * stats, puts the adapter into reset state, deactivates
1156 * its time as needed, and frees the irq it is using.
1157 *
1158 **************************************************************/
1159
1160 static int tlan_close(struct net_device *dev)
1161 {
1162 struct tlan_priv *priv = netdev_priv(dev);
1163
1164 priv->neg_be_verbose = 0;
1165 tlan_stop(dev);
1166
1167 free_irq(dev->irq, dev);
1168 tlan_free_lists(dev);
1169 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1170
1171 return 0;
1172
1173 }
1174
1175
1176
1177
1178 /***************************************************************
1179 * tlan_get_stats
1180 *
1181 * Returns:
1182 * A pointer to the device's statistics structure.
1183 * Parms:
1184 * dev The device structure to return the
1185 * stats for.
1186 *
1187 * This function updates the devices statistics by reading
1188 * the TLAN chip's onboard registers. Then it returns the
1189 * address of the statistics structure.
1190 *
1191 **************************************************************/
1192
1193 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1194 {
1195 struct tlan_priv *priv = netdev_priv(dev);
1196 int i;
1197
1198 /* Should only read stats if open ? */
1199 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1200
1201 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1202 priv->rx_eoc_count);
1203 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1204 priv->tx_busy_count);
1205 if (debug & TLAN_DEBUG_GNRL) {
1206 tlan_print_dio(dev->base_addr);
1207 tlan_phy_print(dev);
1208 }
1209 if (debug & TLAN_DEBUG_LIST) {
1210 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1211 tlan_print_list(priv->rx_list + i, "RX", i);
1212 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1213 tlan_print_list(priv->tx_list + i, "TX", i);
1214 }
1215
1216 return &dev->stats;
1217
1218 }
1219
1220
1221
1222
1223 /***************************************************************
1224 * tlan_set_multicast_list
1225 *
1226 * Returns:
1227 * Nothing
1228 * Parms:
1229 * dev The device structure to set the
1230 * multicast list for.
1231 *
1232 * This function sets the TLAN adaptor to various receive
1233 * modes. If the IFF_PROMISC flag is set, promiscuous
1234 * mode is acitviated. Otherwise, promiscuous mode is
1235 * turned off. If the IFF_ALLMULTI flag is set, then
1236 * the hash table is set to receive all group addresses.
1237 * Otherwise, the first three multicast addresses are
1238 * stored in AREG_1-3, and the rest are selected via the
1239 * hash table, as necessary.
1240 *
1241 **************************************************************/
1242
1243 static void tlan_set_multicast_list(struct net_device *dev)
1244 {
1245 struct netdev_hw_addr *ha;
1246 u32 hash1 = 0;
1247 u32 hash2 = 0;
1248 int i;
1249 u32 offset;
1250 u8 tmp;
1251
1252 if (dev->flags & IFF_PROMISC) {
1253 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1254 tlan_dio_write8(dev->base_addr,
1255 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1256 } else {
1257 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1258 tlan_dio_write8(dev->base_addr,
1259 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1260 if (dev->flags & IFF_ALLMULTI) {
1261 for (i = 0; i < 3; i++)
1262 tlan_set_mac(dev, i + 1, NULL);
1263 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1264 0xffffffff);
1265 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1266 0xffffffff);
1267 } else {
1268 i = 0;
1269 netdev_for_each_mc_addr(ha, dev) {
1270 if (i < 3) {
1271 tlan_set_mac(dev, i + 1,
1272 (char *) &ha->addr);
1273 } else {
1274 offset =
1275 tlan_hash_func((u8 *)&ha->addr);
1276 if (offset < 32)
1277 hash1 |= (1 << offset);
1278 else
1279 hash2 |= (1 << (offset - 32));
1280 }
1281 i++;
1282 }
1283 for ( ; i < 3; i++)
1284 tlan_set_mac(dev, i + 1, NULL);
1285 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1286 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1287 }
1288 }
1289
1290 }
1291
1292
1293
1294 /*****************************************************************************
1295 ******************************************************************************
1296
1297 ThunderLAN driver interrupt vectors and table
1298
1299 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1300 Programmer's Guide" for more informations on handling interrupts
1301 generated by TLAN based adapters.
1302
1303 ******************************************************************************
1304 *****************************************************************************/
1305
1306
1307
1308
1309 /***************************************************************
1310 * tlan_handle_tx_eof
1311 *
1312 * Returns:
1313 * 1
1314 * Parms:
1315 * dev Device assigned the IRQ that was
1316 * raised.
1317 * host_int The contents of the HOST_INT
1318 * port.
1319 *
1320 * This function handles Tx EOF interrupts which are raised
1321 * by the adapter when it has completed sending the
1322 * contents of a buffer. If detemines which list/buffer
1323 * was completed and resets it. If the buffer was the last
1324 * in the channel (EOC), then the function checks to see if
1325 * another buffer is ready to send, and if so, sends a Tx
1326 * Go command. Finally, the driver activates/continues the
1327 * activity LED.
1328 *
1329 **************************************************************/
1330
1331 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1332 {
1333 struct tlan_priv *priv = netdev_priv(dev);
1334 int eoc = 0;
1335 struct tlan_list *head_list;
1336 dma_addr_t head_list_phys;
1337 u32 ack = 0;
1338 u16 tmp_c_stat;
1339
1340 TLAN_DBG(TLAN_DEBUG_TX,
1341 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1342 priv->tx_head, priv->tx_tail);
1343 head_list = priv->tx_list + priv->tx_head;
1344
1345 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1346 && (ack < 255)) {
1347 struct sk_buff *skb = tlan_get_skb(head_list);
1348
1349 ack++;
1350 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1351 max(skb->len,
1352 (unsigned int)TLAN_MIN_FRAME_SIZE),
1353 PCI_DMA_TODEVICE);
1354 dev_kfree_skb_any(skb);
1355 head_list->buffer[8].address = 0;
1356 head_list->buffer[9].address = 0;
1357
1358 if (tmp_c_stat & TLAN_CSTAT_EOC)
1359 eoc = 1;
1360
1361 dev->stats.tx_bytes += head_list->frame_size;
1362
1363 head_list->c_stat = TLAN_CSTAT_UNUSED;
1364 netif_start_queue(dev);
1365 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1366 head_list = priv->tx_list + priv->tx_head;
1367 }
1368
1369 if (!ack)
1370 netdev_info(dev,
1371 "Received interrupt for uncompleted TX frame\n");
1372
1373 if (eoc) {
1374 TLAN_DBG(TLAN_DEBUG_TX,
1375 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1376 priv->tx_head, priv->tx_tail);
1377 head_list = priv->tx_list + priv->tx_head;
1378 head_list_phys = priv->tx_list_dma
1379 + sizeof(struct tlan_list)*priv->tx_head;
1380 if ((head_list->c_stat & TLAN_CSTAT_READY)
1381 == TLAN_CSTAT_READY) {
1382 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1383 ack |= TLAN_HC_GO;
1384 } else {
1385 priv->tx_in_progress = 0;
1386 }
1387 }
1388
1389 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1390 tlan_dio_write8(dev->base_addr,
1391 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1392 if (priv->timer.function == NULL) {
1393 priv->timer.function = tlan_timer;
1394 priv->timer.data = (unsigned long) dev;
1395 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1396 priv->timer_set_at = jiffies;
1397 priv->timer_type = TLAN_TIMER_ACTIVITY;
1398 add_timer(&priv->timer);
1399 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1400 priv->timer_set_at = jiffies;
1401 }
1402 }
1403
1404 return ack;
1405
1406 }
1407
1408
1409
1410
1411 /***************************************************************
1412 * TLan_HandleStatOverflow
1413 *
1414 * Returns:
1415 * 1
1416 * Parms:
1417 * dev Device assigned the IRQ that was
1418 * raised.
1419 * host_int The contents of the HOST_INT
1420 * port.
1421 *
1422 * This function handles the Statistics Overflow interrupt
1423 * which means that one or more of the TLAN statistics
1424 * registers has reached 1/2 capacity and needs to be read.
1425 *
1426 **************************************************************/
1427
1428 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1429 {
1430 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1431
1432 return 1;
1433
1434 }
1435
1436
1437
1438
1439 /***************************************************************
1440 * TLan_HandleRxEOF
1441 *
1442 * Returns:
1443 * 1
1444 * Parms:
1445 * dev Device assigned the IRQ that was
1446 * raised.
1447 * host_int The contents of the HOST_INT
1448 * port.
1449 *
1450 * This function handles the Rx EOF interrupt which
1451 * indicates a frame has been received by the adapter from
1452 * the net and the frame has been transferred to memory.
1453 * The function determines the bounce buffer the frame has
1454 * been loaded into, creates a new sk_buff big enough to
1455 * hold the frame, and sends it to protocol stack. It
1456 * then resets the used buffer and appends it to the end
1457 * of the list. If the frame was the last in the Rx
1458 * channel (EOC), the function restarts the receive channel
1459 * by sending an Rx Go command to the adapter. Then it
1460 * activates/continues the activity LED.
1461 *
1462 **************************************************************/
1463
1464 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1465 {
1466 struct tlan_priv *priv = netdev_priv(dev);
1467 u32 ack = 0;
1468 int eoc = 0;
1469 struct tlan_list *head_list;
1470 struct sk_buff *skb;
1471 struct tlan_list *tail_list;
1472 u16 tmp_c_stat;
1473 dma_addr_t head_list_phys;
1474
1475 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1476 priv->rx_head, priv->rx_tail);
1477 head_list = priv->rx_list + priv->rx_head;
1478 head_list_phys =
1479 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1480
1481 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1482 && (ack < 255)) {
1483 dma_addr_t frame_dma = head_list->buffer[0].address;
1484 u32 frame_size = head_list->frame_size;
1485 struct sk_buff *new_skb;
1486
1487 ack++;
1488 if (tmp_c_stat & TLAN_CSTAT_EOC)
1489 eoc = 1;
1490
1491 new_skb = netdev_alloc_skb_ip_align(dev,
1492 TLAN_MAX_FRAME_SIZE + 5);
1493 if (!new_skb)
1494 goto drop_and_reuse;
1495
1496 skb = tlan_get_skb(head_list);
1497 pci_unmap_single(priv->pci_dev, frame_dma,
1498 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1499 skb_put(skb, frame_size);
1500
1501 dev->stats.rx_bytes += frame_size;
1502
1503 skb->protocol = eth_type_trans(skb, dev);
1504 netif_rx(skb);
1505
1506 head_list->buffer[0].address =
1507 pci_map_single(priv->pci_dev, new_skb->data,
1508 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1509
1510 tlan_store_skb(head_list, new_skb);
1511 drop_and_reuse:
1512 head_list->forward = 0;
1513 head_list->c_stat = 0;
1514 tail_list = priv->rx_list + priv->rx_tail;
1515 tail_list->forward = head_list_phys;
1516
1517 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1518 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1519 head_list = priv->rx_list + priv->rx_head;
1520 head_list_phys = priv->rx_list_dma
1521 + sizeof(struct tlan_list)*priv->rx_head;
1522 }
1523
1524 if (!ack)
1525 netdev_info(dev,
1526 "Received interrupt for uncompleted RX frame\n");
1527
1528
1529 if (eoc) {
1530 TLAN_DBG(TLAN_DEBUG_RX,
1531 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1532 priv->rx_head, priv->rx_tail);
1533 head_list = priv->rx_list + priv->rx_head;
1534 head_list_phys = priv->rx_list_dma
1535 + sizeof(struct tlan_list)*priv->rx_head;
1536 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1537 ack |= TLAN_HC_GO | TLAN_HC_RT;
1538 priv->rx_eoc_count++;
1539 }
1540
1541 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1542 tlan_dio_write8(dev->base_addr,
1543 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1544 if (priv->timer.function == NULL) {
1545 priv->timer.function = tlan_timer;
1546 priv->timer.data = (unsigned long) dev;
1547 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1548 priv->timer_set_at = jiffies;
1549 priv->timer_type = TLAN_TIMER_ACTIVITY;
1550 add_timer(&priv->timer);
1551 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1552 priv->timer_set_at = jiffies;
1553 }
1554 }
1555
1556 return ack;
1557
1558 }
1559
1560
1561
1562
1563 /***************************************************************
1564 * tlan_handle_dummy
1565 *
1566 * Returns:
1567 * 1
1568 * Parms:
1569 * dev Device assigned the IRQ that was
1570 * raised.
1571 * host_int The contents of the HOST_INT
1572 * port.
1573 *
1574 * This function handles the Dummy interrupt, which is
1575 * raised whenever a test interrupt is generated by setting
1576 * the Req_Int bit of HOST_CMD to 1.
1577 *
1578 **************************************************************/
1579
1580 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1581 {
1582 netdev_info(dev, "Test interrupt\n");
1583 return 1;
1584
1585 }
1586
1587
1588
1589
1590 /***************************************************************
1591 * tlan_handle_tx_eoc
1592 *
1593 * Returns:
1594 * 1
1595 * Parms:
1596 * dev Device assigned the IRQ that was
1597 * raised.
1598 * host_int The contents of the HOST_INT
1599 * port.
1600 *
1601 * This driver is structured to determine EOC occurrences by
1602 * reading the CSTAT member of the list structure. Tx EOC
1603 * interrupts are disabled via the DIO INTDIS register.
1604 * However, TLAN chips before revision 3.0 didn't have this
1605 * functionality, so process EOC events if this is the
1606 * case.
1607 *
1608 **************************************************************/
1609
1610 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1611 {
1612 struct tlan_priv *priv = netdev_priv(dev);
1613 struct tlan_list *head_list;
1614 dma_addr_t head_list_phys;
1615 u32 ack = 1;
1616
1617 host_int = 0;
1618 if (priv->tlan_rev < 0x30) {
1619 TLAN_DBG(TLAN_DEBUG_TX,
1620 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1621 priv->tx_head, priv->tx_tail);
1622 head_list = priv->tx_list + priv->tx_head;
1623 head_list_phys = priv->tx_list_dma
1624 + sizeof(struct tlan_list)*priv->tx_head;
1625 if ((head_list->c_stat & TLAN_CSTAT_READY)
1626 == TLAN_CSTAT_READY) {
1627 netif_stop_queue(dev);
1628 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1629 ack |= TLAN_HC_GO;
1630 } else {
1631 priv->tx_in_progress = 0;
1632 }
1633 }
1634
1635 return ack;
1636
1637 }
1638
1639
1640
1641
1642 /***************************************************************
1643 * tlan_handle_status_check
1644 *
1645 * Returns:
1646 * 0 if Adapter check, 1 if Network Status check.
1647 * Parms:
1648 * dev Device assigned the IRQ that was
1649 * raised.
1650 * host_int The contents of the HOST_INT
1651 * port.
1652 *
1653 * This function handles Adapter Check/Network Status
1654 * interrupts generated by the adapter. It checks the
1655 * vector in the HOST_INT register to determine if it is
1656 * an Adapter Check interrupt. If so, it resets the
1657 * adapter. Otherwise it clears the status registers
1658 * and services the PHY.
1659 *
1660 **************************************************************/
1661
1662 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1663 {
1664 struct tlan_priv *priv = netdev_priv(dev);
1665 u32 ack;
1666 u32 error;
1667 u8 net_sts;
1668 u32 phy;
1669 u16 tlphy_ctl;
1670 u16 tlphy_sts;
1671
1672 ack = 1;
1673 if (host_int & TLAN_HI_IV_MASK) {
1674 netif_stop_queue(dev);
1675 error = inl(dev->base_addr + TLAN_CH_PARM);
1676 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1677 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1678 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1679
1680 schedule_work(&priv->tlan_tqueue);
1681
1682 netif_wake_queue(dev);
1683 ack = 0;
1684 } else {
1685 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1686 phy = priv->phy[priv->phy_num];
1687
1688 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1689 if (net_sts) {
1690 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1691 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1692 dev->name, (unsigned) net_sts);
1693 }
1694 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1695 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1696 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1697 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1698 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1699 tlphy_ctl |= TLAN_TC_SWAPOL;
1700 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1701 tlphy_ctl);
1702 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1703 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1704 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1705 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1706 tlphy_ctl);
1707 }
1708
1709 if (debug)
1710 tlan_phy_print(dev);
1711 }
1712 }
1713
1714 return ack;
1715
1716 }
1717
1718
1719
1720
1721 /***************************************************************
1722 * tlan_handle_rx_eoc
1723 *
1724 * Returns:
1725 * 1
1726 * Parms:
1727 * dev Device assigned the IRQ that was
1728 * raised.
1729 * host_int The contents of the HOST_INT
1730 * port.
1731 *
1732 * This driver is structured to determine EOC occurrences by
1733 * reading the CSTAT member of the list structure. Rx EOC
1734 * interrupts are disabled via the DIO INTDIS register.
1735 * However, TLAN chips before revision 3.0 didn't have this
1736 * CSTAT member or a INTDIS register, so if this chip is
1737 * pre-3.0, process EOC interrupts normally.
1738 *
1739 **************************************************************/
1740
1741 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1742 {
1743 struct tlan_priv *priv = netdev_priv(dev);
1744 dma_addr_t head_list_phys;
1745 u32 ack = 1;
1746
1747 if (priv->tlan_rev < 0x30) {
1748 TLAN_DBG(TLAN_DEBUG_RX,
1749 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1750 priv->rx_head, priv->rx_tail);
1751 head_list_phys = priv->rx_list_dma
1752 + sizeof(struct tlan_list)*priv->rx_head;
1753 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1754 ack |= TLAN_HC_GO | TLAN_HC_RT;
1755 priv->rx_eoc_count++;
1756 }
1757
1758 return ack;
1759
1760 }
1761
1762
1763
1764
1765 /*****************************************************************************
1766 ******************************************************************************
1767
1768 ThunderLAN driver timer function
1769
1770 ******************************************************************************
1771 *****************************************************************************/
1772
1773
1774 /***************************************************************
1775 * tlan_timer
1776 *
1777 * Returns:
1778 * Nothing
1779 * Parms:
1780 * data A value given to add timer when
1781 * add_timer was called.
1782 *
1783 * This function handles timed functionality for the
1784 * TLAN driver. The two current timer uses are for
1785 * delaying for autonegotionation and driving the ACT LED.
1786 * - Autonegotiation requires being allowed about
1787 * 2 1/2 seconds before attempting to transmit a
1788 * packet. It would be a very bad thing to hang
1789 * the kernel this long, so the driver doesn't
1790 * allow transmission 'til after this time, for
1791 * certain PHYs. It would be much nicer if all
1792 * PHYs were interrupt-capable like the internal
1793 * PHY.
1794 * - The ACT LED, which shows adapter activity, is
1795 * driven by the driver, and so must be left on
1796 * for a short period to power up the LED so it
1797 * can be seen. This delay can be changed by
1798 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1799 * if desired. 100 ms produces a slightly
1800 * sluggish response.
1801 *
1802 **************************************************************/
1803
1804 static void tlan_timer(unsigned long data)
1805 {
1806 struct net_device *dev = (struct net_device *) data;
1807 struct tlan_priv *priv = netdev_priv(dev);
1808 u32 elapsed;
1809 unsigned long flags = 0;
1810
1811 priv->timer.function = NULL;
1812
1813 switch (priv->timer_type) {
1814 #ifdef MONITOR
1815 case TLAN_TIMER_LINK_BEAT:
1816 tlan_phy_monitor(dev);
1817 break;
1818 #endif
1819 case TLAN_TIMER_PHY_PDOWN:
1820 tlan_phy_power_down(dev);
1821 break;
1822 case TLAN_TIMER_PHY_PUP:
1823 tlan_phy_power_up(dev);
1824 break;
1825 case TLAN_TIMER_PHY_RESET:
1826 tlan_phy_reset(dev);
1827 break;
1828 case TLAN_TIMER_PHY_START_LINK:
1829 tlan_phy_start_link(dev);
1830 break;
1831 case TLAN_TIMER_PHY_FINISH_AN:
1832 tlan_phy_finish_auto_neg(dev);
1833 break;
1834 case TLAN_TIMER_FINISH_RESET:
1835 tlan_finish_reset(dev);
1836 break;
1837 case TLAN_TIMER_ACTIVITY:
1838 spin_lock_irqsave(&priv->lock, flags);
1839 if (priv->timer.function == NULL) {
1840 elapsed = jiffies - priv->timer_set_at;
1841 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1842 tlan_dio_write8(dev->base_addr,
1843 TLAN_LED_REG, TLAN_LED_LINK);
1844 } else {
1845 priv->timer.function = tlan_timer;
1846 priv->timer.expires = priv->timer_set_at
1847 + TLAN_TIMER_ACT_DELAY;
1848 spin_unlock_irqrestore(&priv->lock, flags);
1849 add_timer(&priv->timer);
1850 break;
1851 }
1852 }
1853 spin_unlock_irqrestore(&priv->lock, flags);
1854 break;
1855 default:
1856 break;
1857 }
1858
1859 }
1860
1861
1862
1863
1864 /*****************************************************************************
1865 ******************************************************************************
1866
1867 ThunderLAN driver adapter related routines
1868
1869 ******************************************************************************
1870 *****************************************************************************/
1871
1872
1873 /***************************************************************
1874 * tlan_reset_lists
1875 *
1876 * Returns:
1877 * Nothing
1878 * Parms:
1879 * dev The device structure with the list
1880 * stuctures to be reset.
1881 *
1882 * This routine sets the variables associated with managing
1883 * the TLAN lists to their initial values.
1884 *
1885 **************************************************************/
1886
1887 static void tlan_reset_lists(struct net_device *dev)
1888 {
1889 struct tlan_priv *priv = netdev_priv(dev);
1890 int i;
1891 struct tlan_list *list;
1892 dma_addr_t list_phys;
1893 struct sk_buff *skb;
1894
1895 priv->tx_head = 0;
1896 priv->tx_tail = 0;
1897 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1898 list = priv->tx_list + i;
1899 list->c_stat = TLAN_CSTAT_UNUSED;
1900 list->buffer[0].address = 0;
1901 list->buffer[2].count = 0;
1902 list->buffer[2].address = 0;
1903 list->buffer[8].address = 0;
1904 list->buffer[9].address = 0;
1905 }
1906
1907 priv->rx_head = 0;
1908 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1909 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1910 list = priv->rx_list + i;
1911 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1912 list->c_stat = TLAN_CSTAT_READY;
1913 list->frame_size = TLAN_MAX_FRAME_SIZE;
1914 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1915 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1916 if (!skb) {
1917 netdev_err(dev, "Out of memory for received data\n");
1918 break;
1919 }
1920
1921 list->buffer[0].address = pci_map_single(priv->pci_dev,
1922 skb->data,
1923 TLAN_MAX_FRAME_SIZE,
1924 PCI_DMA_FROMDEVICE);
1925 tlan_store_skb(list, skb);
1926 list->buffer[1].count = 0;
1927 list->buffer[1].address = 0;
1928 list->forward = list_phys + sizeof(struct tlan_list);
1929 }
1930
1931 /* in case ran out of memory early, clear bits */
1932 while (i < TLAN_NUM_RX_LISTS) {
1933 tlan_store_skb(priv->rx_list + i, NULL);
1934 ++i;
1935 }
1936 list->forward = 0;
1937
1938 }
1939
1940
1941 static void tlan_free_lists(struct net_device *dev)
1942 {
1943 struct tlan_priv *priv = netdev_priv(dev);
1944 int i;
1945 struct tlan_list *list;
1946 struct sk_buff *skb;
1947
1948 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1949 list = priv->tx_list + i;
1950 skb = tlan_get_skb(list);
1951 if (skb) {
1952 pci_unmap_single(
1953 priv->pci_dev,
1954 list->buffer[0].address,
1955 max(skb->len,
1956 (unsigned int)TLAN_MIN_FRAME_SIZE),
1957 PCI_DMA_TODEVICE);
1958 dev_kfree_skb_any(skb);
1959 list->buffer[8].address = 0;
1960 list->buffer[9].address = 0;
1961 }
1962 }
1963
1964 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1965 list = priv->rx_list + i;
1966 skb = tlan_get_skb(list);
1967 if (skb) {
1968 pci_unmap_single(priv->pci_dev,
1969 list->buffer[0].address,
1970 TLAN_MAX_FRAME_SIZE,
1971 PCI_DMA_FROMDEVICE);
1972 dev_kfree_skb_any(skb);
1973 list->buffer[8].address = 0;
1974 list->buffer[9].address = 0;
1975 }
1976 }
1977 }
1978
1979
1980
1981
1982 /***************************************************************
1983 * tlan_print_dio
1984 *
1985 * Returns:
1986 * Nothing
1987 * Parms:
1988 * io_base Base IO port of the device of
1989 * which to print DIO registers.
1990 *
1991 * This function prints out all the internal (DIO)
1992 * registers of a TLAN chip.
1993 *
1994 **************************************************************/
1995
1996 static void tlan_print_dio(u16 io_base)
1997 {
1998 u32 data0, data1;
1999 int i;
2000
2001 pr_info("Contents of internal registers for io base 0x%04hx\n",
2002 io_base);
2003 pr_info("Off. +0 +4\n");
2004 for (i = 0; i < 0x4C; i += 8) {
2005 data0 = tlan_dio_read32(io_base, i);
2006 data1 = tlan_dio_read32(io_base, i + 0x4);
2007 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2008 }
2009
2010 }
2011
2012
2013
2014
2015 /***************************************************************
2016 * TLan_PrintList
2017 *
2018 * Returns:
2019 * Nothing
2020 * Parms:
2021 * list A pointer to the struct tlan_list structure to
2022 * be printed.
2023 * type A string to designate type of list,
2024 * "Rx" or "Tx".
2025 * num The index of the list.
2026 *
2027 * This function prints out the contents of the list
2028 * pointed to by the list parameter.
2029 *
2030 **************************************************************/
2031
2032 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2033 {
2034 int i;
2035
2036 pr_info("%s List %d at %p\n", type, num, list);
2037 pr_info(" Forward = 0x%08x\n", list->forward);
2038 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2039 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2040 /* for (i = 0; i < 10; i++) { */
2041 for (i = 0; i < 2; i++) {
2042 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2043 i, list->buffer[i].count, list->buffer[i].address);
2044 }
2045
2046 }
2047
2048
2049
2050
2051 /***************************************************************
2052 * tlan_read_and_clear_stats
2053 *
2054 * Returns:
2055 * Nothing
2056 * Parms:
2057 * dev Pointer to device structure of adapter
2058 * to which to read stats.
2059 * record Flag indicating whether to add
2060 *
2061 * This functions reads all the internal status registers
2062 * of the TLAN chip, which clears them as a side effect.
2063 * It then either adds the values to the device's status
2064 * struct, or discards them, depending on whether record
2065 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2066 *
2067 **************************************************************/
2068
2069 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2070 {
2071 u32 tx_good, tx_under;
2072 u32 rx_good, rx_over;
2073 u32 def_tx, crc, code;
2074 u32 multi_col, single_col;
2075 u32 excess_col, late_col, loss;
2076
2077 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2078 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2079 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2080 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2081 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2082
2083 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2084 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2085 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2086 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2087 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2088
2089 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2090 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2091 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2092 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2093 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2094
2095 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2096 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2097 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2098 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2099 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2100
2101 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2102 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2103 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2104 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2105
2106 if (record) {
2107 dev->stats.rx_packets += rx_good;
2108 dev->stats.rx_errors += rx_over + crc + code;
2109 dev->stats.tx_packets += tx_good;
2110 dev->stats.tx_errors += tx_under + loss;
2111 dev->stats.collisions += multi_col
2112 + single_col + excess_col + late_col;
2113
2114 dev->stats.rx_over_errors += rx_over;
2115 dev->stats.rx_crc_errors += crc;
2116 dev->stats.rx_frame_errors += code;
2117
2118 dev->stats.tx_aborted_errors += tx_under;
2119 dev->stats.tx_carrier_errors += loss;
2120 }
2121
2122 }
2123
2124
2125
2126
2127 /***************************************************************
2128 * TLan_Reset
2129 *
2130 * Returns:
2131 * 0
2132 * Parms:
2133 * dev Pointer to device structure of adapter
2134 * to be reset.
2135 *
2136 * This function resets the adapter and it's physical
2137 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2138 * Programmer's Guide" for details. The routine tries to
2139 * implement what is detailed there, though adjustments
2140 * have been made.
2141 *
2142 **************************************************************/
2143
2144 static void
2145 tlan_reset_adapter(struct net_device *dev)
2146 {
2147 struct tlan_priv *priv = netdev_priv(dev);
2148 int i;
2149 u32 addr;
2150 u32 data;
2151 u8 data8;
2152
2153 priv->tlan_full_duplex = false;
2154 priv->phy_online = 0;
2155 netif_carrier_off(dev);
2156
2157 /* 1. Assert reset bit. */
2158
2159 data = inl(dev->base_addr + TLAN_HOST_CMD);
2160 data |= TLAN_HC_AD_RST;
2161 outl(data, dev->base_addr + TLAN_HOST_CMD);
2162
2163 udelay(1000);
2164
2165 /* 2. Turn off interrupts. (Probably isn't necessary) */
2166
2167 data = inl(dev->base_addr + TLAN_HOST_CMD);
2168 data |= TLAN_HC_INT_OFF;
2169 outl(data, dev->base_addr + TLAN_HOST_CMD);
2170
2171 /* 3. Clear AREGs and HASHs. */
2172
2173 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2174 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2175
2176 /* 4. Setup NetConfig register. */
2177
2178 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2179 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2180
2181 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2182
2183 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2184 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2185
2186 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2187
2188 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2189 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2190 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2191
2192 /* 7. Setup the remaining registers. */
2193
2194 if (priv->tlan_rev >= 0x30) {
2195 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2196 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2197 }
2198 tlan_phy_detect(dev);
2199 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2200
2201 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2202 data |= TLAN_NET_CFG_BIT;
2203 if (priv->aui == 1) {
2204 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2205 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2206 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2207 priv->tlan_full_duplex = true;
2208 } else {
2209 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2210 }
2211 }
2212
2213 if (priv->phy_num == 0)
2214 data |= TLAN_NET_CFG_PHY_EN;
2215 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2216
2217 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2218 tlan_finish_reset(dev);
2219 else
2220 tlan_phy_power_down(dev);
2221
2222 }
2223
2224
2225
2226
2227 static void
2228 tlan_finish_reset(struct net_device *dev)
2229 {
2230 struct tlan_priv *priv = netdev_priv(dev);
2231 u8 data;
2232 u32 phy;
2233 u8 sio;
2234 u16 status;
2235 u16 partner;
2236 u16 tlphy_ctl;
2237 u16 tlphy_par;
2238 u16 tlphy_id1, tlphy_id2;
2239 int i;
2240
2241 phy = priv->phy[priv->phy_num];
2242
2243 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2244 if (priv->tlan_full_duplex)
2245 data |= TLAN_NET_CMD_DUPLEX;
2246 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2247 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2248 if (priv->phy_num == 0)
2249 data |= TLAN_NET_MASK_MASK7;
2250 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2251 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2252 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2253 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2254
2255 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2256 (priv->aui)) {
2257 status = MII_GS_LINK;
2258 netdev_info(dev, "Link forced\n");
2259 } else {
2260 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2261 udelay(1000);
2262 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2263 if ((status & MII_GS_LINK) &&
2264 /* We only support link info on Nat.Sem. PHY's */
2265 (tlphy_id1 == NAT_SEM_ID1) &&
2266 (tlphy_id2 == NAT_SEM_ID2)) {
2267 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
2268 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);
2269
2270 netdev_info(dev,
2271 "Link active with %s %uMbps %s-Duplex\n",
2272 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2273 ? "forced" : "Autonegotiation enabled,",
2274 tlphy_par & TLAN_PHY_SPEED_100
2275 ? 100 : 10,
2276 tlphy_par & TLAN_PHY_DUPLEX_FULL
2277 ? "Full" : "Half");
2278
2279 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2280 netdev_info(dev, "Partner capability:");
2281 for (i = 5; i < 10; i++)
2282 if (partner & (1 << i))
2283 pr_cont(" %s", media[i-5]);
2284 pr_cont("\n");
2285 }
2286
2287 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2288 TLAN_LED_LINK);
2289 #ifdef MONITOR
2290 /* We have link beat..for now anyway */
2291 priv->link = 1;
2292 /*Enabling link beat monitoring */
2293 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2294 #endif
2295 } else if (status & MII_GS_LINK) {
2296 netdev_info(dev, "Link active\n");
2297 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2298 TLAN_LED_LINK);
2299 }
2300 }
2301
2302 if (priv->phy_num == 0) {
2303 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2304 tlphy_ctl |= TLAN_TC_INTEN;
2305 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2306 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2307 sio |= TLAN_NET_SIO_MINTEN;
2308 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2309 }
2310
2311 if (status & MII_GS_LINK) {
2312 tlan_set_mac(dev, 0, dev->dev_addr);
2313 priv->phy_online = 1;
2314 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2315 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2316 outb((TLAN_HC_REQ_INT >> 8),
2317 dev->base_addr + TLAN_HOST_CMD + 1);
2318 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2319 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2320 netif_carrier_on(dev);
2321 } else {
2322 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2323 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2324 return;
2325 }
2326 tlan_set_multicast_list(dev);
2327
2328 }
2329
2330
2331
2332
2333 /***************************************************************
2334 * tlan_set_mac
2335 *
2336 * Returns:
2337 * Nothing
2338 * Parms:
2339 * dev Pointer to device structure of adapter
2340 * on which to change the AREG.
2341 * areg The AREG to set the address in (0 - 3).
2342 * mac A pointer to an array of chars. Each
2343 * element stores one byte of the address.
2344 * IE, it isn't in ascii.
2345 *
2346 * This function transfers a MAC address to one of the
2347 * TLAN AREGs (address registers). The TLAN chip locks
2348 * the register on writing to offset 0 and unlocks the
2349 * register after writing to offset 5. If NULL is passed
2350 * in mac, then the AREG is filled with 0's.
2351 *
2352 **************************************************************/
2353
2354 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2355 {
2356 int i;
2357
2358 areg *= 6;
2359
2360 if (mac != NULL) {
2361 for (i = 0; i < 6; i++)
2362 tlan_dio_write8(dev->base_addr,
2363 TLAN_AREG_0 + areg + i, mac[i]);
2364 } else {
2365 for (i = 0; i < 6; i++)
2366 tlan_dio_write8(dev->base_addr,
2367 TLAN_AREG_0 + areg + i, 0);
2368 }
2369
2370 }
2371
2372
2373
2374
2375 /*****************************************************************************
2376 ******************************************************************************
2377
2378 ThunderLAN driver PHY layer routines
2379
2380 ******************************************************************************
2381 *****************************************************************************/
2382
2383
2384
2385 /*********************************************************************
2386 * tlan_phy_print
2387 *
2388 * Returns:
2389 * Nothing
2390 * Parms:
2391 * dev A pointer to the device structure of the
2392 * TLAN device having the PHYs to be detailed.
2393 *
2394 * This function prints the registers a PHY (aka transceiver).
2395 *
2396 ********************************************************************/
2397
2398 static void tlan_phy_print(struct net_device *dev)
2399 {
2400 struct tlan_priv *priv = netdev_priv(dev);
2401 u16 i, data0, data1, data2, data3, phy;
2402
2403 phy = priv->phy[priv->phy_num];
2404
2405 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2406 netdev_info(dev, "Unmanaged PHY\n");
2407 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2408 netdev_info(dev, "PHY 0x%02x\n", phy);
2409 pr_info(" Off. +0 +1 +2 +3\n");
2410 for (i = 0; i < 0x20; i += 4) {
2411 tlan_mii_read_reg(dev, phy, i, &data0);
2412 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2413 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2414 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2415 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2416 i, data0, data1, data2, data3);
2417 }
2418 } else {
2419 netdev_info(dev, "Invalid PHY\n");
2420 }
2421
2422 }
2423
2424
2425
2426
2427 /*********************************************************************
2428 * tlan_phy_detect
2429 *
2430 * Returns:
2431 * Nothing
2432 * Parms:
2433 * dev A pointer to the device structure of the adapter
2434 * for which the PHY needs determined.
2435 *
2436 * So far I've found that adapters which have external PHYs
2437 * may also use the internal PHY for part of the functionality.
2438 * (eg, AUI/Thinnet). This function finds out if this TLAN
2439 * chip has an internal PHY, and then finds the first external
2440 * PHY (starting from address 0) if it exists).
2441 *
2442 ********************************************************************/
2443
2444 static void tlan_phy_detect(struct net_device *dev)
2445 {
2446 struct tlan_priv *priv = netdev_priv(dev);
2447 u16 control;
2448 u16 hi;
2449 u16 lo;
2450 u32 phy;
2451
2452 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2453 priv->phy_num = 0xffff;
2454 return;
2455 }
2456
2457 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2458
2459 if (hi != 0xffff)
2460 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2461 else
2462 priv->phy[0] = TLAN_PHY_NONE;
2463
2464 priv->phy[1] = TLAN_PHY_NONE;
2465 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2466 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2467 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2468 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2469 if ((control != 0xffff) ||
2470 (hi != 0xffff) || (lo != 0xffff)) {
2471 TLAN_DBG(TLAN_DEBUG_GNRL,
2472 "PHY found at %02x %04x %04x %04x\n",
2473 phy, control, hi, lo);
2474 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2475 (phy != TLAN_PHY_MAX_ADDR)) {
2476 priv->phy[1] = phy;
2477 }
2478 }
2479 }
2480
2481 if (priv->phy[1] != TLAN_PHY_NONE)
2482 priv->phy_num = 1;
2483 else if (priv->phy[0] != TLAN_PHY_NONE)
2484 priv->phy_num = 0;
2485 else
2486 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2487
2488 }
2489
2490
2491
2492
2493 static void tlan_phy_power_down(struct net_device *dev)
2494 {
2495 struct tlan_priv *priv = netdev_priv(dev);
2496 u16 value;
2497
2498 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2499 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2500 tlan_mii_sync(dev->base_addr);
2501 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2502 if ((priv->phy_num == 0) &&
2503 (priv->phy[1] != TLAN_PHY_NONE) &&
2504 (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2505 tlan_mii_sync(dev->base_addr);
2506 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2507 }
2508
2509 /* Wait for 50 ms and powerup
2510 * This is abitrary. It is intended to make sure the
2511 * transceiver settles.
2512 */
2513 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2514
2515 }
2516
2517
2518
2519
2520 static void tlan_phy_power_up(struct net_device *dev)
2521 {
2522 struct tlan_priv *priv = netdev_priv(dev);
2523 u16 value;
2524
2525 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2526 tlan_mii_sync(dev->base_addr);
2527 value = MII_GC_LOOPBK;
2528 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2529 tlan_mii_sync(dev->base_addr);
2530 /* Wait for 500 ms and reset the
2531 * transceiver. The TLAN docs say both 50 ms and
2532 * 500 ms, so do the longer, just in case.
2533 */
2534 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2535
2536 }
2537
2538
2539
2540
2541 static void tlan_phy_reset(struct net_device *dev)
2542 {
2543 struct tlan_priv *priv = netdev_priv(dev);
2544 u16 phy;
2545 u16 value;
2546
2547 phy = priv->phy[priv->phy_num];
2548
2549 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name);
2550 tlan_mii_sync(dev->base_addr);
2551 value = MII_GC_LOOPBK | MII_GC_RESET;
2552 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2553 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2554 while (value & MII_GC_RESET)
2555 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2556
2557 /* Wait for 500 ms and initialize.
2558 * I don't remember why I wait this long.
2559 * I've changed this to 50ms, as it seems long enough.
2560 */
2561 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2562
2563 }
2564
2565
2566
2567
2568 static void tlan_phy_start_link(struct net_device *dev)
2569 {
2570 struct tlan_priv *priv = netdev_priv(dev);
2571 u16 ability;
2572 u16 control;
2573 u16 data;
2574 u16 phy;
2575 u16 status;
2576 u16 tctl;
2577
2578 phy = priv->phy[priv->phy_num];
2579 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2580 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2581 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2582
2583 if ((status & MII_GS_AUTONEG) &&
2584 (!priv->aui)) {
2585 ability = status >> 11;
2586 if (priv->speed == TLAN_SPEED_10 &&
2587 priv->duplex == TLAN_DUPLEX_HALF) {
2588 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2589 } else if (priv->speed == TLAN_SPEED_10 &&
2590 priv->duplex == TLAN_DUPLEX_FULL) {
2591 priv->tlan_full_duplex = true;
2592 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2593 } else if (priv->speed == TLAN_SPEED_100 &&
2594 priv->duplex == TLAN_DUPLEX_HALF) {
2595 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2596 } else if (priv->speed == TLAN_SPEED_100 &&
2597 priv->duplex == TLAN_DUPLEX_FULL) {
2598 priv->tlan_full_duplex = true;
2599 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2600 } else {
2601
2602 /* Set Auto-Neg advertisement */
2603 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2604 (ability << 5) | 1);
2605 /* Enablee Auto-Neg */
2606 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2607 /* Restart Auto-Neg */
2608 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2609 /* Wait for 4 sec for autonegotiation
2610 * to complete. The max spec time is less than this
2611 * but the card need additional time to start AN.
2612 * .5 sec should be plenty extra.
2613 */
2614 netdev_info(dev, "Starting autonegotiation\n");
2615 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2616 return;
2617 }
2618
2619 }
2620
2621 if ((priv->aui) && (priv->phy_num != 0)) {
2622 priv->phy_num = 0;
2623 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2624 | TLAN_NET_CFG_PHY_EN;
2625 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2626 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2627 return;
2628 } else if (priv->phy_num == 0) {
2629 control = 0;
2630 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2631 if (priv->aui) {
2632 tctl |= TLAN_TC_AUISEL;
2633 } else {
2634 tctl &= ~TLAN_TC_AUISEL;
2635 if (priv->duplex == TLAN_DUPLEX_FULL) {
2636 control |= MII_GC_DUPLEX;
2637 priv->tlan_full_duplex = true;
2638 }
2639 if (priv->speed == TLAN_SPEED_100)
2640 control |= MII_GC_SPEEDSEL;
2641 }
2642 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2643 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2644 }
2645
2646 /* Wait for 2 sec to give the transceiver time
2647 * to establish link.
2648 */
2649 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2650
2651 }
2652
2653
2654
2655
2656 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2657 {
2658 struct tlan_priv *priv = netdev_priv(dev);
2659 u16 an_adv;
2660 u16 an_lpa;
2661 u16 data;
2662 u16 mode;
2663 u16 phy;
2664 u16 status;
2665
2666 phy = priv->phy[priv->phy_num];
2667
2668 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2669 udelay(1000);
2670 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2671
2672 if (!(status & MII_GS_AUTOCMPLT)) {
2673 /* Wait for 8 sec to give the process
2674 * more time. Perhaps we should fail after a while.
2675 */
2676 if (!priv->neg_be_verbose++) {
2677 pr_info("Giving autonegotiation more time.\n");
2678 pr_info("Please check that your adapter has\n");
2679 pr_info("been properly connected to a HUB or Switch.\n");
2680 pr_info("Trying to establish link in the background...\n");
2681 }
2682 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2683 return;
2684 }
2685
2686 netdev_info(dev, "Autonegotiation complete\n");
2687 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2688 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2689 mode = an_adv & an_lpa & 0x03E0;
2690 if (mode & 0x0100)
2691 priv->tlan_full_duplex = true;
2692 else if (!(mode & 0x0080) && (mode & 0x0040))
2693 priv->tlan_full_duplex = true;
2694
2695 if ((!(mode & 0x0180)) &&
2696 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2697 (priv->phy_num != 0)) {
2698 priv->phy_num = 0;
2699 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2700 | TLAN_NET_CFG_PHY_EN;
2701 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2702 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2703 return;
2704 }
2705
2706 if (priv->phy_num == 0) {
2707 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2708 (an_adv & an_lpa & 0x0040)) {
2709 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2710 MII_GC_AUTOENB | MII_GC_DUPLEX);
2711 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2712 } else {
2713 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2714 MII_GC_AUTOENB);
2715 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2716 }
2717 }
2718
2719 /* Wait for 100 ms. No reason in partiticular.
2720 */
2721 tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2722
2723 }
2724
2725 #ifdef MONITOR
2726
2727 /*********************************************************************
2728 *
2729 * tlan_phy_monitor
2730 *
2731 * Returns:
2732 * None
2733 *
2734 * Params:
2735 * dev The device structure of this device.
2736 *
2737 *
2738 * This function monitors PHY condition by reading the status
2739 * register via the MII bus. This can be used to give info
2740 * about link changes (up/down), and possible switch to alternate
2741 * media.
2742 *
2743 *******************************************************************/
2744
2745 void tlan_phy_monitor(struct net_device *dev)
2746 {
2747 struct tlan_priv *priv = netdev_priv(dev);
2748 u16 phy;
2749 u16 phy_status;
2750
2751 phy = priv->phy[priv->phy_num];
2752
2753 /* Get PHY status register */
2754 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2755
2756 /* Check if link has been lost */
2757 if (!(phy_status & MII_GS_LINK)) {
2758 if (priv->link) {
2759 priv->link = 0;
2760 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2761 dev->name);
2762 netif_carrier_off(dev);
2763 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2764 return;
2765 }
2766 }
2767
2768 /* Link restablished? */
2769 if ((phy_status & MII_GS_LINK) && !priv->link) {
2770 priv->link = 1;
2771 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2772 dev->name);
2773 netif_carrier_on(dev);
2774 }
2775
2776 /* Setup a new monitor */
2777 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2778 }
2779
2780 #endif /* MONITOR */
2781
2782
2783 /*****************************************************************************
2784 ******************************************************************************
2785
2786 ThunderLAN driver MII routines
2787
2788 these routines are based on the information in chap. 2 of the
2789 "ThunderLAN Programmer's Guide", pp. 15-24.
2790
2791 ******************************************************************************
2792 *****************************************************************************/
2793
2794
2795 /***************************************************************
2796 * tlan_mii_read_reg
2797 *
2798 * Returns:
2799 * false if ack received ok
2800 * true if no ack received or other error
2801 *
2802 * Parms:
2803 * dev The device structure containing
2804 * The io address and interrupt count
2805 * for this device.
2806 * phy The address of the PHY to be queried.
2807 * reg The register whose contents are to be
2808 * retrieved.
2809 * val A pointer to a variable to store the
2810 * retrieved value.
2811 *
2812 * This function uses the TLAN's MII bus to retrieve the contents
2813 * of a given register on a PHY. It sends the appropriate info
2814 * and then reads the 16-bit register value from the MII bus via
2815 * the TLAN SIO register.
2816 *
2817 **************************************************************/
2818
2819 static bool
2820 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2821 {
2822 u8 nack;
2823 u16 sio, tmp;
2824 u32 i;
2825 bool err;
2826 int minten;
2827 struct tlan_priv *priv = netdev_priv(dev);
2828 unsigned long flags = 0;
2829
2830 err = false;
2831 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2832 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2833
2834 if (!in_irq())
2835 spin_lock_irqsave(&priv->lock, flags);
2836
2837 tlan_mii_sync(dev->base_addr);
2838
2839 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2840 if (minten)
2841 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2842
2843 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2844 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2845 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2846 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2847
2848
2849 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2850
2851 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2852 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2853 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2854
2855 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2856 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2857 if (nack) { /* no ACK, so fake it */
2858 for (i = 0; i < 16; i++) {
2859 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2860 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2861 }
2862 tmp = 0xffff;
2863 err = true;
2864 } else { /* ACK, so read data */
2865 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2866 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2867 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2868 tmp |= i;
2869 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2870 }
2871 }
2872
2873
2874 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2875 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2876
2877 if (minten)
2878 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2879
2880 *val = tmp;
2881
2882 if (!in_irq())
2883 spin_unlock_irqrestore(&priv->lock, flags);
2884
2885 return err;
2886
2887 }
2888
2889
2890
2891
2892 /***************************************************************
2893 * tlan_mii_send_data
2894 *
2895 * Returns:
2896 * Nothing
2897 * Parms:
2898 * base_port The base IO port of the adapter in
2899 * question.
2900 * dev The address of the PHY to be queried.
2901 * data The value to be placed on the MII bus.
2902 * num_bits The number of bits in data that are to
2903 * be placed on the MII bus.
2904 *
2905 * This function sends on sequence of bits on the MII
2906 * configuration bus.
2907 *
2908 **************************************************************/
2909
2910 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2911 {
2912 u16 sio;
2913 u32 i;
2914
2915 if (num_bits == 0)
2916 return;
2917
2918 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2919 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2920 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2921
2922 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2923 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2924 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2925 if (data & i)
2926 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2927 else
2928 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2929 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2930 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2931 }
2932
2933 }
2934
2935
2936
2937
2938 /***************************************************************
2939 * TLan_MiiSync
2940 *
2941 * Returns:
2942 * Nothing
2943 * Parms:
2944 * base_port The base IO port of the adapter in
2945 * question.
2946 *
2947 * This functions syncs all PHYs in terms of the MII configuration
2948 * bus.
2949 *
2950 **************************************************************/
2951
2952 static void tlan_mii_sync(u16 base_port)
2953 {
2954 int i;
2955 u16 sio;
2956
2957 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2958 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2959
2960 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2961 for (i = 0; i < 32; i++) {
2962 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2963 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2964 }
2965
2966 }
2967
2968
2969
2970
2971 /***************************************************************
2972 * tlan_mii_write_reg
2973 *
2974 * Returns:
2975 * Nothing
2976 * Parms:
2977 * dev The device structure for the device
2978 * to write to.
2979 * phy The address of the PHY to be written to.
2980 * reg The register whose contents are to be
2981 * written.
2982 * val The value to be written to the register.
2983 *
2984 * This function uses the TLAN's MII bus to write the contents of a
2985 * given register on a PHY. It sends the appropriate info and then
2986 * writes the 16-bit register value from the MII configuration bus
2987 * via the TLAN SIO register.
2988 *
2989 **************************************************************/
2990
2991 static void
2992 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2993 {
2994 u16 sio;
2995 int minten;
2996 unsigned long flags = 0;
2997 struct tlan_priv *priv = netdev_priv(dev);
2998
2999 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3000 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3001
3002 if (!in_irq())
3003 spin_lock_irqsave(&priv->lock, flags);
3004
3005 tlan_mii_sync(dev->base_addr);
3006
3007 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3008 if (minten)
3009 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3010
3011 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3012 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3013 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3014 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3015
3016 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3017 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3018
3019 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3020 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3021
3022 if (minten)
3023 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3024
3025 if (!in_irq())
3026 spin_unlock_irqrestore(&priv->lock, flags);
3027
3028 }
3029
3030
3031
3032
3033 /*****************************************************************************
3034 ******************************************************************************
3035
3036 ThunderLAN driver eeprom routines
3037
3038 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3039 EEPROM. these functions are based on information in microchip's
3040 data sheet. I don't know how well this functions will work with
3041 other Eeproms.
3042
3043 ******************************************************************************
3044 *****************************************************************************/
3045
3046
3047 /***************************************************************
3048 * tlan_ee_send_start
3049 *
3050 * Returns:
3051 * Nothing
3052 * Parms:
3053 * io_base The IO port base address for the
3054 * TLAN device with the EEPROM to
3055 * use.
3056 *
3057 * This function sends a start cycle to an EEPROM attached
3058 * to a TLAN chip.
3059 *
3060 **************************************************************/
3061
3062 static void tlan_ee_send_start(u16 io_base)
3063 {
3064 u16 sio;
3065
3066 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3067 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3068
3069 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3070 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3071 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3072 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3073 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3074
3075 }
3076
3077
3078
3079
3080 /***************************************************************
3081 * tlan_ee_send_byte
3082 *
3083 * Returns:
3084 * If the correct ack was received, 0, otherwise 1
3085 * Parms: io_base The IO port base address for the
3086 * TLAN device with the EEPROM to
3087 * use.
3088 * data The 8 bits of information to
3089 * send to the EEPROM.
3090 * stop If TLAN_EEPROM_STOP is passed, a
3091 * stop cycle is sent after the
3092 * byte is sent after the ack is
3093 * read.
3094 *
3095 * This function sends a byte on the serial EEPROM line,
3096 * driving the clock to send each bit. The function then
3097 * reverses transmission direction and reads an acknowledge
3098 * bit.
3099 *
3100 **************************************************************/
3101
3102 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3103 {
3104 int err;
3105 u8 place;
3106 u16 sio;
3107
3108 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3109 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3110
3111 /* Assume clock is low, tx is enabled; */
3112 for (place = 0x80; place != 0; place >>= 1) {
3113 if (place & data)
3114 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3115 else
3116 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3117 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3118 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3119 }
3120 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3121 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3122 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3123 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3124 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3125
3126 if ((!err) && stop) {
3127 /* STOP, raise data while clock is high */
3128 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3129 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3130 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3131 }
3132
3133 return err;
3134
3135 }
3136
3137
3138
3139
3140 /***************************************************************
3141 * tlan_ee_receive_byte
3142 *
3143 * Returns:
3144 * Nothing
3145 * Parms:
3146 * io_base The IO port base address for the
3147 * TLAN device with the EEPROM to
3148 * use.
3149 * data An address to a char to hold the
3150 * data sent from the EEPROM.
3151 * stop If TLAN_EEPROM_STOP is passed, a
3152 * stop cycle is sent after the
3153 * byte is received, and no ack is
3154 * sent.
3155 *
3156 * This function receives 8 bits of data from the EEPROM
3157 * over the serial link. It then sends and ack bit, or no
3158 * ack and a stop bit. This function is used to retrieve
3159 * data after the address of a byte in the EEPROM has been
3160 * sent.
3161 *
3162 **************************************************************/
3163
3164 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3165 {
3166 u8 place;
3167 u16 sio;
3168
3169 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3170 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3171 *data = 0;
3172
3173 /* Assume clock is low, tx is enabled; */
3174 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3175 for (place = 0x80; place; place >>= 1) {
3176 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3177 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3178 *data |= place;
3179 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3180 }
3181
3182 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3183 if (!stop) {
3184 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3185 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3186 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3187 } else {
3188 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3189 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3190 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3191 /* STOP, raise data while clock is high */
3192 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3193 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3194 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3195 }
3196
3197 }
3198
3199
3200
3201
3202 /***************************************************************
3203 * tlan_ee_read_byte
3204 *
3205 * Returns:
3206 * No error = 0, else, the stage at which the error
3207 * occurred.
3208 * Parms:
3209 * io_base The IO port base address for the
3210 * TLAN device with the EEPROM to
3211 * use.
3212 * ee_addr The address of the byte in the
3213 * EEPROM whose contents are to be
3214 * retrieved.
3215 * data An address to a char to hold the
3216 * data obtained from the EEPROM.
3217 *
3218 * This function reads a byte of information from an byte
3219 * cell in the EEPROM.
3220 *
3221 **************************************************************/
3222
3223 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3224 {
3225 int err;
3226 struct tlan_priv *priv = netdev_priv(dev);
3227 unsigned long flags = 0;
3228 int ret = 0;
3229
3230 spin_lock_irqsave(&priv->lock, flags);
3231
3232 tlan_ee_send_start(dev->base_addr);
3233 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3234 if (err) {
3235 ret = 1;
3236 goto fail;
3237 }
3238 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3239 if (err) {
3240 ret = 2;
3241 goto fail;
3242 }
3243 tlan_ee_send_start(dev->base_addr);
3244 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3245 if (err) {
3246 ret = 3;
3247 goto fail;
3248 }
3249 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3250 fail:
3251 spin_unlock_irqrestore(&priv->lock, flags);
3252
3253 return ret;
3254
3255 }
3256
3257
3258