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x86/xen: resume timer irqs early
[linux/fpc-iii.git] / drivers / net / ethernet / ti / tlan.c
blob591437e59b9019c9fa0597a8342f63ae5357fcaa
1 /*******************************************************************************
2 *
3 * Linux ThunderLAN Driver
4 *
5 * tlan.c
6 * by James Banks
7 *
8 * (C) 1997-1998 Caldera, Inc.
9 * (C) 1998 James Banks
10 * (C) 1999-2001 Torben Mathiasen
11 * (C) 2002 Samuel Chessman
12 *
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License, incorporated herein by reference.
15 *
16 ** Useful (if not required) reading:
17 *
18 * Texas Instruments, ThunderLAN Programmer's Guide,
19 * TI Literature Number SPWU013A
20 * available in PDF format from www.ti.com
21 * Level One, LXT901 and LXT970 Data Sheets
22 * available in PDF format from www.level1.com
23 * National Semiconductor, DP83840A Data Sheet
24 * available in PDF format from www.national.com
25 * Microchip Technology, 24C01A/02A/04A Data Sheet
26 * available in PDF format from www.microchip.com
27 *
28 ******************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/hardirq.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/interrupt.h>
36 #include <linux/ioport.h>
37 #include <linux/eisa.h>
38 #include <linux/pci.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/delay.h>
43 #include <linux/spinlock.h>
44 #include <linux/workqueue.h>
45 #include <linux/mii.h>
46
47 #include "tlan.h"
48
49
50 /* For removing EISA devices */
51 static struct net_device *tlan_eisa_devices;
52
53 static int tlan_devices_installed;
54
55 /* Set speed, duplex and aui settings */
56 static int aui[MAX_TLAN_BOARDS];
57 static int duplex[MAX_TLAN_BOARDS];
58 static int speed[MAX_TLAN_BOARDS];
59 static int boards_found;
60 module_param_array(aui, int, NULL, 0);
61 module_param_array(duplex, int, NULL, 0);
62 module_param_array(speed, int, NULL, 0);
63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64 MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
67
68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70 MODULE_LICENSE("GPL");
71
72
73 /* Define this to enable Link beat monitoring */
74 #undef MONITOR
75
76 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
77 static int debug;
78 module_param(debug, int, 0);
79 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
80
81 static const char tlan_signature[] = "TLAN";
82 static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
83 static int tlan_have_pci;
84 static int tlan_have_eisa;
85
86 static const char * const media[] = {
87 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
88 "100BaseTx-FD", "100BaseT4", NULL
89 };
90
91 static struct board {
92 const char *device_label;
93 u32 flags;
94 u16 addr_ofs;
95 } board_info[] = {
96 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
97 { "Compaq Netelligent 10/100 TX PCI UTP",
98 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
99 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
100 { "Compaq NetFlex-3/P",
101 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
102 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
103 { "Compaq Netelligent Integrated 10/100 TX UTP",
104 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
105 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
106 TLAN_ADAPTER_NONE, 0x83 },
107 { "Compaq Netelligent 10/100 TX Embedded UTP",
108 TLAN_ADAPTER_NONE, 0x83 },
109 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
110 { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
111 { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
112 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
113 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
114 { "Compaq NetFlex-3/E",
115 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
116 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
117 { "Compaq NetFlex-3/E",
118 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
119 };
120
121 static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = {
122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
136 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
142 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
146 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
147 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
148 { 0,}
149 };
150 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
151
152 static void tlan_eisa_probe(void);
153 static void tlan_eisa_cleanup(void);
154 static int tlan_init(struct net_device *);
155 static int tlan_open(struct net_device *dev);
156 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
157 static irqreturn_t tlan_handle_interrupt(int, void *);
158 static int tlan_close(struct net_device *);
159 static struct net_device_stats *tlan_get_stats(struct net_device *);
160 static void tlan_set_multicast_list(struct net_device *);
161 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
162 static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
163 int irq, int rev, const struct pci_device_id *ent);
164 static void tlan_tx_timeout(struct net_device *dev);
165 static void tlan_tx_timeout_work(struct work_struct *work);
166 static int tlan_init_one(struct pci_dev *pdev,
167 const struct pci_device_id *ent);
168
169 static u32 tlan_handle_tx_eof(struct net_device *, u16);
170 static u32 tlan_handle_stat_overflow(struct net_device *, u16);
171 static u32 tlan_handle_rx_eof(struct net_device *, u16);
172 static u32 tlan_handle_dummy(struct net_device *, u16);
173 static u32 tlan_handle_tx_eoc(struct net_device *, u16);
174 static u32 tlan_handle_status_check(struct net_device *, u16);
175 static u32 tlan_handle_rx_eoc(struct net_device *, u16);
176
177 static void tlan_timer(unsigned long);
178
179 static void tlan_reset_lists(struct net_device *);
180 static void tlan_free_lists(struct net_device *);
181 static void tlan_print_dio(u16);
182 static void tlan_print_list(struct tlan_list *, char *, int);
183 static void tlan_read_and_clear_stats(struct net_device *, int);
184 static void tlan_reset_adapter(struct net_device *);
185 static void tlan_finish_reset(struct net_device *);
186 static void tlan_set_mac(struct net_device *, int areg, char *mac);
187
188 static void tlan_phy_print(struct net_device *);
189 static void tlan_phy_detect(struct net_device *);
190 static void tlan_phy_power_down(struct net_device *);
191 static void tlan_phy_power_up(struct net_device *);
192 static void tlan_phy_reset(struct net_device *);
193 static void tlan_phy_start_link(struct net_device *);
194 static void tlan_phy_finish_auto_neg(struct net_device *);
195 #ifdef MONITOR
196 static void tlan_phy_monitor(struct net_device *);
197 #endif
198
199 /*
200 static int tlan_phy_nop(struct net_device *);
201 static int tlan_phy_internal_check(struct net_device *);
202 static int tlan_phy_internal_service(struct net_device *);
203 static int tlan_phy_dp83840a_check(struct net_device *);
204 */
205
206 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
207 static void tlan_mii_send_data(u16, u32, unsigned);
208 static void tlan_mii_sync(u16);
209 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
210
211 static void tlan_ee_send_start(u16);
212 static int tlan_ee_send_byte(u16, u8, int);
213 static void tlan_ee_receive_byte(u16, u8 *, int);
214 static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
215
216
217 static inline void
218 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
219 {
220 unsigned long addr = (unsigned long)skb;
221 tag->buffer[9].address = addr;
222 tag->buffer[8].address = upper_32_bits(addr);
223 }
224
225 static inline struct sk_buff *
226 tlan_get_skb(const struct tlan_list *tag)
227 {
228 unsigned long addr;
229
230 addr = tag->buffer[9].address;
231 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
232 return (struct sk_buff *) addr;
233 }
234
235 static u32
236 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
237 NULL,
238 tlan_handle_tx_eof,
239 tlan_handle_stat_overflow,
240 tlan_handle_rx_eof,
241 tlan_handle_dummy,
242 tlan_handle_tx_eoc,
243 tlan_handle_status_check,
244 tlan_handle_rx_eoc
245 };
246
247 static inline void
248 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
249 {
250 struct tlan_priv *priv = netdev_priv(dev);
251 unsigned long flags = 0;
252
253 if (!in_irq())
254 spin_lock_irqsave(&priv->lock, flags);
255 if (priv->timer.function != NULL &&
256 priv->timer_type != TLAN_TIMER_ACTIVITY) {
257 if (!in_irq())
258 spin_unlock_irqrestore(&priv->lock, flags);
259 return;
260 }
261 priv->timer.function = tlan_timer;
262 if (!in_irq())
263 spin_unlock_irqrestore(&priv->lock, flags);
264
265 priv->timer.data = (unsigned long) dev;
266 priv->timer_set_at = jiffies;
267 priv->timer_type = type;
268 mod_timer(&priv->timer, jiffies + ticks);
269
270 }
271
272
273 /*****************************************************************************
274 ******************************************************************************
275
276 ThunderLAN driver primary functions
277
278 these functions are more or less common to all linux network drivers.
279
280 ******************************************************************************
281 *****************************************************************************/
282
283
284
285
286
287 /***************************************************************
288 * tlan_remove_one
289 *
290 * Returns:
291 * Nothing
292 * Parms:
293 * None
294 *
295 * Goes through the TLanDevices list and frees the device
296 * structs and memory associated with each device (lists
297 * and buffers). It also ureserves the IO port regions
298 * associated with this device.
299 *
300 **************************************************************/
301
302
303 static void tlan_remove_one(struct pci_dev *pdev)
304 {
305 struct net_device *dev = pci_get_drvdata(pdev);
306 struct tlan_priv *priv = netdev_priv(dev);
307
308 unregister_netdev(dev);
309
310 if (priv->dma_storage) {
311 pci_free_consistent(priv->pci_dev,
312 priv->dma_size, priv->dma_storage,
313 priv->dma_storage_dma);
314 }
315
316 #ifdef CONFIG_PCI
317 pci_release_regions(pdev);
318 #endif
319
320 free_netdev(dev);
321
322 pci_set_drvdata(pdev, NULL);
323 cancel_work_sync(&priv->tlan_tqueue);
324 }
325
326 static void tlan_start(struct net_device *dev)
327 {
328 tlan_reset_lists(dev);
329 /* NOTE: It might not be necessary to read the stats before a
330 reset if you don't care what the values are.
331 */
332 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
333 tlan_reset_adapter(dev);
334 netif_wake_queue(dev);
335 }
336
337 static void tlan_stop(struct net_device *dev)
338 {
339 struct tlan_priv *priv = netdev_priv(dev);
340
341 tlan_read_and_clear_stats(dev, TLAN_RECORD);
342 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
343 /* Reset and power down phy */
344 tlan_reset_adapter(dev);
345 if (priv->timer.function != NULL) {
346 del_timer_sync(&priv->timer);
347 priv->timer.function = NULL;
348 }
349 }
350
351 #ifdef CONFIG_PM
352
353 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
354 {
355 struct net_device *dev = pci_get_drvdata(pdev);
356
357 if (netif_running(dev))
358 tlan_stop(dev);
359
360 netif_device_detach(dev);
361 pci_save_state(pdev);
362 pci_disable_device(pdev);
363 pci_wake_from_d3(pdev, false);
364 pci_set_power_state(pdev, PCI_D3hot);
365
366 return 0;
367 }
368
369 static int tlan_resume(struct pci_dev *pdev)
370 {
371 struct net_device *dev = pci_get_drvdata(pdev);
372
373 pci_set_power_state(pdev, PCI_D0);
374 pci_restore_state(pdev);
375 pci_enable_wake(pdev, PCI_D0, 0);
376 netif_device_attach(dev);
377
378 if (netif_running(dev))
379 tlan_start(dev);
380
381 return 0;
382 }
383
384 #else /* CONFIG_PM */
385
386 #define tlan_suspend NULL
387 #define tlan_resume NULL
388
389 #endif /* CONFIG_PM */
390
391
392 static struct pci_driver tlan_driver = {
393 .name = "tlan",
394 .id_table = tlan_pci_tbl,
395 .probe = tlan_init_one,
396 .remove = tlan_remove_one,
397 .suspend = tlan_suspend,
398 .resume = tlan_resume,
399 };
400
401 static int __init tlan_probe(void)
402 {
403 int rc = -ENODEV;
404
405 pr_info("%s", tlan_banner);
406
407 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
408
409 /* Use new style PCI probing. Now the kernel will
410 do most of this for us */
411 rc = pci_register_driver(&tlan_driver);
412
413 if (rc != 0) {
414 pr_err("Could not register pci driver\n");
415 goto err_out_pci_free;
416 }
417
418 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
419 tlan_eisa_probe();
420
421 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
422 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
423 tlan_have_pci, tlan_have_eisa);
424
425 if (tlan_devices_installed == 0) {
426 rc = -ENODEV;
427 goto err_out_pci_unreg;
428 }
429 return 0;
430
431 err_out_pci_unreg:
432 pci_unregister_driver(&tlan_driver);
433 err_out_pci_free:
434 return rc;
435 }
436
437
438 static int tlan_init_one(struct pci_dev *pdev,
439 const struct pci_device_id *ent)
440 {
441 return tlan_probe1(pdev, -1, -1, 0, ent);
442 }
443
444
445 /*
446 ***************************************************************
447 * tlan_probe1
448 *
449 * Returns:
450 * 0 on success, error code on error
451 * Parms:
452 * none
453 *
454 * The name is lower case to fit in with all the rest of
455 * the netcard_probe names. This function looks for
456 * another TLan based adapter, setting it up with the
457 * allocated device struct if one is found.
458 * tlan_probe has been ported to the new net API and
459 * now allocates its own device structure. This function
460 * is also used by modules.
461 *
462 **************************************************************/
463
464 static int tlan_probe1(struct pci_dev *pdev, 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 rc = -ENOMEM;
490 goto err_out_regions;
491 }
492 SET_NETDEV_DEV(dev, &pdev->dev);
493
494 priv = netdev_priv(dev);
495
496 priv->pci_dev = pdev;
497 priv->dev = dev;
498
499 /* Is this a PCI device? */
500 if (pdev) {
501 u32 pci_io_base = 0;
502
503 priv->adapter = &board_info[ent->driver_data];
504
505 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
506 if (rc) {
507 pr_err("No suitable PCI mapping available\n");
508 goto err_out_free_dev;
509 }
510
511 for (reg = 0; reg <= 5; reg++) {
512 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
513 pci_io_base = pci_resource_start(pdev, reg);
514 TLAN_DBG(TLAN_DEBUG_GNRL,
515 "IO mapping is available at %x.\n",
516 pci_io_base);
517 break;
518 }
519 }
520 if (!pci_io_base) {
521 pr_err("No IO mappings available\n");
522 rc = -EIO;
523 goto err_out_free_dev;
524 }
525
526 dev->base_addr = pci_io_base;
527 dev->irq = pdev->irq;
528 priv->adapter_rev = pdev->revision;
529 pci_set_master(pdev);
530 pci_set_drvdata(pdev, dev);
531
532 } else { /* EISA card */
533 /* This is a hack. We need to know which board structure
534 * is suited for this adapter */
535 device_id = inw(ioaddr + EISA_ID2);
536 if (device_id == 0x20F1) {
537 priv->adapter = &board_info[13]; /* NetFlex-3/E */
538 priv->adapter_rev = 23; /* TLAN 2.3 */
539 } else {
540 priv->adapter = &board_info[14];
541 priv->adapter_rev = 10; /* TLAN 1.0 */
542 }
543 dev->base_addr = ioaddr;
544 dev->irq = irq;
545 }
546
547 /* Kernel parameters */
548 if (dev->mem_start) {
549 priv->aui = dev->mem_start & 0x01;
550 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
551 : (dev->mem_start & 0x06) >> 1;
552 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
553 : (dev->mem_start & 0x18) >> 3;
554
555 if (priv->speed == 0x1)
556 priv->speed = TLAN_SPEED_10;
557 else if (priv->speed == 0x2)
558 priv->speed = TLAN_SPEED_100;
559
560 debug = priv->debug = dev->mem_end;
561 } else {
562 priv->aui = aui[boards_found];
563 priv->speed = speed[boards_found];
564 priv->duplex = duplex[boards_found];
565 priv->debug = debug;
566 }
567
568 /* This will be used when we get an adapter error from
569 * within our irq handler */
570 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
571
572 spin_lock_init(&priv->lock);
573
574 rc = tlan_init(dev);
575 if (rc) {
576 pr_err("Could not set up device\n");
577 goto err_out_free_dev;
578 }
579
580 rc = register_netdev(dev);
581 if (rc) {
582 pr_err("Could not register device\n");
583 goto err_out_uninit;
584 }
585
586
587 tlan_devices_installed++;
588 boards_found++;
589
590 /* pdev is NULL if this is an EISA device */
591 if (pdev)
592 tlan_have_pci++;
593 else {
594 priv->next_device = tlan_eisa_devices;
595 tlan_eisa_devices = dev;
596 tlan_have_eisa++;
597 }
598
599 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
600 (int)dev->irq,
601 (int)dev->base_addr,
602 priv->adapter->device_label,
603 priv->adapter_rev);
604 return 0;
605
606 err_out_uninit:
607 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
608 priv->dma_storage_dma);
609 err_out_free_dev:
610 free_netdev(dev);
611 err_out_regions:
612 #ifdef CONFIG_PCI
613 if (pdev)
614 pci_release_regions(pdev);
615 #endif
616 err_out:
617 if (pdev)
618 pci_disable_device(pdev);
619 return rc;
620 }
621
622
623 static void tlan_eisa_cleanup(void)
624 {
625 struct net_device *dev;
626 struct tlan_priv *priv;
627
628 while (tlan_have_eisa) {
629 dev = tlan_eisa_devices;
630 priv = netdev_priv(dev);
631 if (priv->dma_storage) {
632 pci_free_consistent(priv->pci_dev, priv->dma_size,
633 priv->dma_storage,
634 priv->dma_storage_dma);
635 }
636 release_region(dev->base_addr, 0x10);
637 unregister_netdev(dev);
638 tlan_eisa_devices = priv->next_device;
639 free_netdev(dev);
640 tlan_have_eisa--;
641 }
642 }
643
644
645 static void __exit tlan_exit(void)
646 {
647 pci_unregister_driver(&tlan_driver);
648
649 if (tlan_have_eisa)
650 tlan_eisa_cleanup();
651
652 }
653
654
655 /* Module loading/unloading */
656 module_init(tlan_probe);
657 module_exit(tlan_exit);
658
659
660
661 /**************************************************************
662 * tlan_eisa_probe
663 *
664 * Returns: 0 on success, 1 otherwise
665 *
666 * Parms: None
667 *
668 *
669 * This functions probes for EISA devices and calls
670 * TLan_probe1 when one is found.
671 *
672 *************************************************************/
673
674 static void __init tlan_eisa_probe(void)
675 {
676 long ioaddr;
677 int rc = -ENODEV;
678 int irq;
679 u16 device_id;
680
681 if (!EISA_bus) {
682 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
683 return;
684 }
685
686 /* Loop through all slots of the EISA bus */
687 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
688
689 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
690 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
691 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
692 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
693
694
695 TLAN_DBG(TLAN_DEBUG_PROBE,
696 "Probing for EISA adapter at IO: 0x%4x : ",
697 (int) ioaddr);
698 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
699 goto out;
700
701 if (inw(ioaddr + EISA_ID) != 0x110E) {
702 release_region(ioaddr, 0x10);
703 goto out;
704 }
705
706 device_id = inw(ioaddr + EISA_ID2);
707 if (device_id != 0x20F1 && device_id != 0x40F1) {
708 release_region(ioaddr, 0x10);
709 goto out;
710 }
711
712 /* check if adapter is enabled */
713 if (inb(ioaddr + EISA_CR) != 0x1) {
714 release_region(ioaddr, 0x10);
715 goto out2;
716 }
717
718 if (debug == 0x10)
719 pr_info("Found one\n");
720
721
722 /* Get irq from board */
723 switch (inb(ioaddr + 0xcc0)) {
724 case(0x10):
725 irq = 5;
726 break;
727 case(0x20):
728 irq = 9;
729 break;
730 case(0x40):
731 irq = 10;
732 break;
733 case(0x80):
734 irq = 11;
735 break;
736 default:
737 goto out;
738 }
739
740
741 /* Setup the newly found eisa adapter */
742 rc = tlan_probe1(NULL, ioaddr, irq,
743 12, NULL);
744 continue;
745
746 out:
747 if (debug == 0x10)
748 pr_info("None found\n");
749 continue;
750
751 out2:
752 if (debug == 0x10)
753 pr_info("Card found but it is not enabled, skipping\n");
754 continue;
755
756 }
757
758 }
759
760 #ifdef CONFIG_NET_POLL_CONTROLLER
761 static void tlan_poll(struct net_device *dev)
762 {
763 disable_irq(dev->irq);
764 tlan_handle_interrupt(dev->irq, dev);
765 enable_irq(dev->irq);
766 }
767 #endif
768
769 static const struct net_device_ops tlan_netdev_ops = {
770 .ndo_open = tlan_open,
771 .ndo_stop = tlan_close,
772 .ndo_start_xmit = tlan_start_tx,
773 .ndo_tx_timeout = tlan_tx_timeout,
774 .ndo_get_stats = tlan_get_stats,
775 .ndo_set_rx_mode = tlan_set_multicast_list,
776 .ndo_do_ioctl = tlan_ioctl,
777 .ndo_change_mtu = eth_change_mtu,
778 .ndo_set_mac_address = eth_mac_addr,
779 .ndo_validate_addr = eth_validate_addr,
780 #ifdef CONFIG_NET_POLL_CONTROLLER
781 .ndo_poll_controller = tlan_poll,
782 #endif
783 };
784
785
786
787 /***************************************************************
788 * tlan_init
789 *
790 * Returns:
791 * 0 on success, error code otherwise.
792 * Parms:
793 * dev The structure of the device to be
794 * init'ed.
795 *
796 * This function completes the initialization of the
797 * device structure and driver. It reserves the IO
798 * addresses, allocates memory for the lists and bounce
799 * buffers, retrieves the MAC address from the eeprom
800 * and assignes the device's methods.
801 *
802 **************************************************************/
803
804 static int tlan_init(struct net_device *dev)
805 {
806 int dma_size;
807 int err;
808 int i;
809 struct tlan_priv *priv;
810
811 priv = netdev_priv(dev);
812
813 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
814 * (sizeof(struct tlan_list));
815 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
816 dma_size,
817 &priv->dma_storage_dma);
818 priv->dma_size = dma_size;
819
820 if (priv->dma_storage == NULL) {
821 pr_err("Could not allocate lists and buffers for %s\n",
822 dev->name);
823 return -ENOMEM;
824 }
825 memset(priv->dma_storage, 0, dma_size);
826 priv->rx_list = (struct tlan_list *)
827 ALIGN((unsigned long)priv->dma_storage, 8);
828 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
829 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
830 priv->tx_list_dma =
831 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
832
833 err = 0;
834 for (i = 0; i < 6 ; i++)
835 err |= tlan_ee_read_byte(dev,
836 (u8) priv->adapter->addr_ofs + i,
837 (u8 *) &dev->dev_addr[i]);
838 if (err) {
839 pr_err("%s: Error reading MAC from eeprom: %d\n",
840 dev->name, err);
841 }
842 dev->addr_len = 6;
843
844 netif_carrier_off(dev);
845
846 /* Device methods */
847 dev->netdev_ops = &tlan_netdev_ops;
848 dev->watchdog_timeo = TX_TIMEOUT;
849
850 return 0;
851
852 }
853
854
855
856
857 /***************************************************************
858 * tlan_open
859 *
860 * Returns:
861 * 0 on success, error code otherwise.
862 * Parms:
863 * dev Structure of device to be opened.
864 *
865 * This routine puts the driver and TLAN adapter in a
866 * state where it is ready to send and receive packets.
867 * It allocates the IRQ, resets and brings the adapter
868 * out of reset, and allows interrupts. It also delays
869 * the startup for autonegotiation or sends a Rx GO
870 * command to the adapter, as appropriate.
871 *
872 **************************************************************/
873
874 static int tlan_open(struct net_device *dev)
875 {
876 struct tlan_priv *priv = netdev_priv(dev);
877 int err;
878
879 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
880 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
881 dev->name, dev);
882
883 if (err) {
884 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
885 dev->irq);
886 return err;
887 }
888
889 init_timer(&priv->timer);
890
891 tlan_start(dev);
892
893 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
894 dev->name, priv->tlan_rev);
895
896 return 0;
897
898 }
899
900
901
902 /**************************************************************
903 * tlan_ioctl
904 *
905 * Returns:
906 * 0 on success, error code otherwise
907 * Params:
908 * dev structure of device to receive ioctl.
909 *
910 * rq ifreq structure to hold userspace data.
911 *
912 * cmd ioctl command.
913 *
914 *
915 *************************************************************/
916
917 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
918 {
919 struct tlan_priv *priv = netdev_priv(dev);
920 struct mii_ioctl_data *data = if_mii(rq);
921 u32 phy = priv->phy[priv->phy_num];
922
923 if (!priv->phy_online)
924 return -EAGAIN;
925
926 switch (cmd) {
927 case SIOCGMIIPHY: /* get address of MII PHY in use. */
928 data->phy_id = phy;
929
930
931 case SIOCGMIIREG: /* read MII PHY register. */
932 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
933 data->reg_num & 0x1f, &data->val_out);
934 return 0;
935
936
937 case SIOCSMIIREG: /* write MII PHY register. */
938 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
939 data->reg_num & 0x1f, data->val_in);
940 return 0;
941 default:
942 return -EOPNOTSUPP;
943 }
944 }
945
946
947 /***************************************************************
948 * tlan_tx_timeout
949 *
950 * Returns: nothing
951 *
952 * Params:
953 * dev structure of device which timed out
954 * during transmit.
955 *
956 **************************************************************/
957
958 static void tlan_tx_timeout(struct net_device *dev)
959 {
960
961 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
962
963 /* Ok so we timed out, lets see what we can do about it...*/
964 tlan_free_lists(dev);
965 tlan_reset_lists(dev);
966 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
967 tlan_reset_adapter(dev);
968 dev->trans_start = jiffies; /* prevent tx timeout */
969 netif_wake_queue(dev);
970
971 }
972
973
974 /***************************************************************
975 * tlan_tx_timeout_work
976 *
977 * Returns: nothing
978 *
979 * Params:
980 * work work item of device which timed out
981 *
982 **************************************************************/
983
984 static void tlan_tx_timeout_work(struct work_struct *work)
985 {
986 struct tlan_priv *priv =
987 container_of(work, struct tlan_priv, tlan_tqueue);
988
989 tlan_tx_timeout(priv->dev);
990 }
991
992
993
994 /***************************************************************
995 * tlan_start_tx
996 *
997 * Returns:
998 * 0 on success, non-zero on failure.
999 * Parms:
1000 * skb A pointer to the sk_buff containing the
1001 * frame to be sent.
1002 * dev The device to send the data on.
1003 *
1004 * This function adds a frame to the Tx list to be sent
1005 * ASAP. First it verifies that the adapter is ready and
1006 * there is room in the queue. Then it sets up the next
1007 * available list, copies the frame to the corresponding
1008 * buffer. If the adapter Tx channel is idle, it gives
1009 * the adapter a Tx Go command on the list, otherwise it
1010 * sets the forward address of the previous list to point
1011 * to this one. Then it frees the sk_buff.
1012 *
1013 **************************************************************/
1014
1015 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1016 {
1017 struct tlan_priv *priv = netdev_priv(dev);
1018 dma_addr_t tail_list_phys;
1019 struct tlan_list *tail_list;
1020 unsigned long flags;
1021 unsigned int txlen;
1022
1023 if (!priv->phy_online) {
1024 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1025 dev->name);
1026 dev_kfree_skb_any(skb);
1027 return NETDEV_TX_OK;
1028 }
1029
1030 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1031 return NETDEV_TX_OK;
1032 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1033
1034 tail_list = priv->tx_list + priv->tx_tail;
1035 tail_list_phys =
1036 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1037
1038 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1039 TLAN_DBG(TLAN_DEBUG_TX,
1040 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1041 dev->name, priv->tx_head, priv->tx_tail);
1042 netif_stop_queue(dev);
1043 priv->tx_busy_count++;
1044 return NETDEV_TX_BUSY;
1045 }
1046
1047 tail_list->forward = 0;
1048
1049 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1050 skb->data, txlen,
1051 PCI_DMA_TODEVICE);
1052 tlan_store_skb(tail_list, skb);
1053
1054 tail_list->frame_size = (u16) txlen;
1055 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1056 tail_list->buffer[1].count = 0;
1057 tail_list->buffer[1].address = 0;
1058
1059 spin_lock_irqsave(&priv->lock, flags);
1060 tail_list->c_stat = TLAN_CSTAT_READY;
1061 if (!priv->tx_in_progress) {
1062 priv->tx_in_progress = 1;
1063 TLAN_DBG(TLAN_DEBUG_TX,
1064 "TRANSMIT: Starting TX on buffer %d\n",
1065 priv->tx_tail);
1066 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1067 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1068 } else {
1069 TLAN_DBG(TLAN_DEBUG_TX,
1070 "TRANSMIT: Adding buffer %d to TX channel\n",
1071 priv->tx_tail);
1072 if (priv->tx_tail == 0) {
1073 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1074 = tail_list_phys;
1075 } else {
1076 (priv->tx_list + (priv->tx_tail - 1))->forward
1077 = tail_list_phys;
1078 }
1079 }
1080 spin_unlock_irqrestore(&priv->lock, flags);
1081
1082 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1083
1084 return NETDEV_TX_OK;
1085
1086 }
1087
1088
1089
1090
1091 /***************************************************************
1092 * tlan_handle_interrupt
1093 *
1094 * Returns:
1095 * Nothing
1096 * Parms:
1097 * irq The line on which the interrupt
1098 * occurred.
1099 * dev_id A pointer to the device assigned to
1100 * this irq line.
1101 *
1102 * This function handles an interrupt generated by its
1103 * assigned TLAN adapter. The function deactivates
1104 * interrupts on its adapter, records the type of
1105 * interrupt, executes the appropriate subhandler, and
1106 * acknowdges the interrupt to the adapter (thus
1107 * re-enabling adapter interrupts.
1108 *
1109 **************************************************************/
1110
1111 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1112 {
1113 struct net_device *dev = dev_id;
1114 struct tlan_priv *priv = netdev_priv(dev);
1115 u16 host_int;
1116 u16 type;
1117
1118 spin_lock(&priv->lock);
1119
1120 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1121 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1122 if (type) {
1123 u32 ack;
1124 u32 host_cmd;
1125
1126 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1127 ack = tlan_int_vector[type](dev, host_int);
1128
1129 if (ack) {
1130 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1131 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1132 }
1133 }
1134
1135 spin_unlock(&priv->lock);
1136
1137 return IRQ_RETVAL(type);
1138 }
1139
1140
1141
1142
1143 /***************************************************************
1144 * tlan_close
1145 *
1146 * Returns:
1147 * An error code.
1148 * Parms:
1149 * dev The device structure of the device to
1150 * close.
1151 *
1152 * This function shuts down the adapter. It records any
1153 * stats, puts the adapter into reset state, deactivates
1154 * its time as needed, and frees the irq it is using.
1155 *
1156 **************************************************************/
1157
1158 static int tlan_close(struct net_device *dev)
1159 {
1160 struct tlan_priv *priv = netdev_priv(dev);
1161
1162 priv->neg_be_verbose = 0;
1163 tlan_stop(dev);
1164
1165 free_irq(dev->irq, dev);
1166 tlan_free_lists(dev);
1167 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1168
1169 return 0;
1170
1171 }
1172
1173
1174
1175
1176 /***************************************************************
1177 * tlan_get_stats
1178 *
1179 * Returns:
1180 * A pointer to the device's statistics structure.
1181 * Parms:
1182 * dev The device structure to return the
1183 * stats for.
1184 *
1185 * This function updates the devices statistics by reading
1186 * the TLAN chip's onboard registers. Then it returns the
1187 * address of the statistics structure.
1188 *
1189 **************************************************************/
1190
1191 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1192 {
1193 struct tlan_priv *priv = netdev_priv(dev);
1194 int i;
1195
1196 /* Should only read stats if open ? */
1197 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1198
1199 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1200 priv->rx_eoc_count);
1201 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1202 priv->tx_busy_count);
1203 if (debug & TLAN_DEBUG_GNRL) {
1204 tlan_print_dio(dev->base_addr);
1205 tlan_phy_print(dev);
1206 }
1207 if (debug & TLAN_DEBUG_LIST) {
1208 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1209 tlan_print_list(priv->rx_list + i, "RX", i);
1210 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1211 tlan_print_list(priv->tx_list + i, "TX", i);
1212 }
1213
1214 return &dev->stats;
1215
1216 }
1217
1218
1219
1220
1221 /***************************************************************
1222 * tlan_set_multicast_list
1223 *
1224 * Returns:
1225 * Nothing
1226 * Parms:
1227 * dev The device structure to set the
1228 * multicast list for.
1229 *
1230 * This function sets the TLAN adaptor to various receive
1231 * modes. If the IFF_PROMISC flag is set, promiscuous
1232 * mode is acitviated. Otherwise, promiscuous mode is
1233 * turned off. If the IFF_ALLMULTI flag is set, then
1234 * the hash table is set to receive all group addresses.
1235 * Otherwise, the first three multicast addresses are
1236 * stored in AREG_1-3, and the rest are selected via the
1237 * hash table, as necessary.
1238 *
1239 **************************************************************/
1240
1241 static void tlan_set_multicast_list(struct net_device *dev)
1242 {
1243 struct netdev_hw_addr *ha;
1244 u32 hash1 = 0;
1245 u32 hash2 = 0;
1246 int i;
1247 u32 offset;
1248 u8 tmp;
1249
1250 if (dev->flags & IFF_PROMISC) {
1251 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1252 tlan_dio_write8(dev->base_addr,
1253 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1254 } else {
1255 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1256 tlan_dio_write8(dev->base_addr,
1257 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1258 if (dev->flags & IFF_ALLMULTI) {
1259 for (i = 0; i < 3; i++)
1260 tlan_set_mac(dev, i + 1, NULL);
1261 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1262 0xffffffff);
1263 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1264 0xffffffff);
1265 } else {
1266 i = 0;
1267 netdev_for_each_mc_addr(ha, dev) {
1268 if (i < 3) {
1269 tlan_set_mac(dev, i + 1,
1270 (char *) &ha->addr);
1271 } else {
1272 offset =
1273 tlan_hash_func((u8 *)&ha->addr);
1274 if (offset < 32)
1275 hash1 |= (1 << offset);
1276 else
1277 hash2 |= (1 << (offset - 32));
1278 }
1279 i++;
1280 }
1281 for ( ; i < 3; i++)
1282 tlan_set_mac(dev, i + 1, NULL);
1283 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1284 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1285 }
1286 }
1287
1288 }
1289
1290
1291
1292 /*****************************************************************************
1293 ******************************************************************************
1294
1295 ThunderLAN driver interrupt vectors and table
1296
1297 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1298 Programmer's Guide" for more informations on handling interrupts
1299 generated by TLAN based adapters.
1300
1301 ******************************************************************************
1302 *****************************************************************************/
1303
1304
1305
1306
1307 /***************************************************************
1308 * tlan_handle_tx_eof
1309 *
1310 * Returns:
1311 * 1
1312 * Parms:
1313 * dev Device assigned the IRQ that was
1314 * raised.
1315 * host_int The contents of the HOST_INT
1316 * port.
1317 *
1318 * This function handles Tx EOF interrupts which are raised
1319 * by the adapter when it has completed sending the
1320 * contents of a buffer. If detemines which list/buffer
1321 * was completed and resets it. If the buffer was the last
1322 * in the channel (EOC), then the function checks to see if
1323 * another buffer is ready to send, and if so, sends a Tx
1324 * Go command. Finally, the driver activates/continues the
1325 * activity LED.
1326 *
1327 **************************************************************/
1328
1329 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1330 {
1331 struct tlan_priv *priv = netdev_priv(dev);
1332 int eoc = 0;
1333 struct tlan_list *head_list;
1334 dma_addr_t head_list_phys;
1335 u32 ack = 0;
1336 u16 tmp_c_stat;
1337
1338 TLAN_DBG(TLAN_DEBUG_TX,
1339 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1340 priv->tx_head, priv->tx_tail);
1341 head_list = priv->tx_list + priv->tx_head;
1342
1343 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1344 && (ack < 255)) {
1345 struct sk_buff *skb = tlan_get_skb(head_list);
1346
1347 ack++;
1348 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1349 max(skb->len,
1350 (unsigned int)TLAN_MIN_FRAME_SIZE),
1351 PCI_DMA_TODEVICE);
1352 dev_kfree_skb_any(skb);
1353 head_list->buffer[8].address = 0;
1354 head_list->buffer[9].address = 0;
1355
1356 if (tmp_c_stat & TLAN_CSTAT_EOC)
1357 eoc = 1;
1358
1359 dev->stats.tx_bytes += head_list->frame_size;
1360
1361 head_list->c_stat = TLAN_CSTAT_UNUSED;
1362 netif_start_queue(dev);
1363 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1364 head_list = priv->tx_list + priv->tx_head;
1365 }
1366
1367 if (!ack)
1368 netdev_info(dev,
1369 "Received interrupt for uncompleted TX frame\n");
1370
1371 if (eoc) {
1372 TLAN_DBG(TLAN_DEBUG_TX,
1373 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1374 priv->tx_head, priv->tx_tail);
1375 head_list = priv->tx_list + priv->tx_head;
1376 head_list_phys = priv->tx_list_dma
1377 + sizeof(struct tlan_list)*priv->tx_head;
1378 if ((head_list->c_stat & TLAN_CSTAT_READY)
1379 == TLAN_CSTAT_READY) {
1380 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1381 ack |= TLAN_HC_GO;
1382 } else {
1383 priv->tx_in_progress = 0;
1384 }
1385 }
1386
1387 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1388 tlan_dio_write8(dev->base_addr,
1389 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1390 if (priv->timer.function == NULL) {
1391 priv->timer.function = tlan_timer;
1392 priv->timer.data = (unsigned long) dev;
1393 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1394 priv->timer_set_at = jiffies;
1395 priv->timer_type = TLAN_TIMER_ACTIVITY;
1396 add_timer(&priv->timer);
1397 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1398 priv->timer_set_at = jiffies;
1399 }
1400 }
1401
1402 return ack;
1403
1404 }
1405
1406
1407
1408
1409 /***************************************************************
1410 * TLan_HandleStatOverflow
1411 *
1412 * Returns:
1413 * 1
1414 * Parms:
1415 * dev Device assigned the IRQ that was
1416 * raised.
1417 * host_int The contents of the HOST_INT
1418 * port.
1419 *
1420 * This function handles the Statistics Overflow interrupt
1421 * which means that one or more of the TLAN statistics
1422 * registers has reached 1/2 capacity and needs to be read.
1423 *
1424 **************************************************************/
1425
1426 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1427 {
1428 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1429
1430 return 1;
1431
1432 }
1433
1434
1435
1436
1437 /***************************************************************
1438 * TLan_HandleRxEOF
1439 *
1440 * Returns:
1441 * 1
1442 * Parms:
1443 * dev Device assigned the IRQ that was
1444 * raised.
1445 * host_int The contents of the HOST_INT
1446 * port.
1447 *
1448 * This function handles the Rx EOF interrupt which
1449 * indicates a frame has been received by the adapter from
1450 * the net and the frame has been transferred to memory.
1451 * The function determines the bounce buffer the frame has
1452 * been loaded into, creates a new sk_buff big enough to
1453 * hold the frame, and sends it to protocol stack. It
1454 * then resets the used buffer and appends it to the end
1455 * of the list. If the frame was the last in the Rx
1456 * channel (EOC), the function restarts the receive channel
1457 * by sending an Rx Go command to the adapter. Then it
1458 * activates/continues the activity LED.
1459 *
1460 **************************************************************/
1461
1462 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1463 {
1464 struct tlan_priv *priv = netdev_priv(dev);
1465 u32 ack = 0;
1466 int eoc = 0;
1467 struct tlan_list *head_list;
1468 struct sk_buff *skb;
1469 struct tlan_list *tail_list;
1470 u16 tmp_c_stat;
1471 dma_addr_t head_list_phys;
1472
1473 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1474 priv->rx_head, priv->rx_tail);
1475 head_list = priv->rx_list + priv->rx_head;
1476 head_list_phys =
1477 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1478
1479 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1480 && (ack < 255)) {
1481 dma_addr_t frame_dma = head_list->buffer[0].address;
1482 u32 frame_size = head_list->frame_size;
1483 struct sk_buff *new_skb;
1484
1485 ack++;
1486 if (tmp_c_stat & TLAN_CSTAT_EOC)
1487 eoc = 1;
1488
1489 new_skb = netdev_alloc_skb_ip_align(dev,
1490 TLAN_MAX_FRAME_SIZE + 5);
1491 if (!new_skb)
1492 goto drop_and_reuse;
1493
1494 skb = tlan_get_skb(head_list);
1495 pci_unmap_single(priv->pci_dev, frame_dma,
1496 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1497 skb_put(skb, frame_size);
1498
1499 dev->stats.rx_bytes += frame_size;
1500
1501 skb->protocol = eth_type_trans(skb, dev);
1502 netif_rx(skb);
1503
1504 head_list->buffer[0].address =
1505 pci_map_single(priv->pci_dev, new_skb->data,
1506 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1507
1508 tlan_store_skb(head_list, new_skb);
1509 drop_and_reuse:
1510 head_list->forward = 0;
1511 head_list->c_stat = 0;
1512 tail_list = priv->rx_list + priv->rx_tail;
1513 tail_list->forward = head_list_phys;
1514
1515 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1516 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1517 head_list = priv->rx_list + priv->rx_head;
1518 head_list_phys = priv->rx_list_dma
1519 + sizeof(struct tlan_list)*priv->rx_head;
1520 }
1521
1522 if (!ack)
1523 netdev_info(dev,
1524 "Received interrupt for uncompleted RX frame\n");
1525
1526
1527 if (eoc) {
1528 TLAN_DBG(TLAN_DEBUG_RX,
1529 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1530 priv->rx_head, priv->rx_tail);
1531 head_list = priv->rx_list + priv->rx_head;
1532 head_list_phys = priv->rx_list_dma
1533 + sizeof(struct tlan_list)*priv->rx_head;
1534 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1535 ack |= TLAN_HC_GO | TLAN_HC_RT;
1536 priv->rx_eoc_count++;
1537 }
1538
1539 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1540 tlan_dio_write8(dev->base_addr,
1541 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1542 if (priv->timer.function == NULL) {
1543 priv->timer.function = tlan_timer;
1544 priv->timer.data = (unsigned long) dev;
1545 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1546 priv->timer_set_at = jiffies;
1547 priv->timer_type = TLAN_TIMER_ACTIVITY;
1548 add_timer(&priv->timer);
1549 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1550 priv->timer_set_at = jiffies;
1551 }
1552 }
1553
1554 return ack;
1555
1556 }
1557
1558
1559
1560
1561 /***************************************************************
1562 * tlan_handle_dummy
1563 *
1564 * Returns:
1565 * 1
1566 * Parms:
1567 * dev Device assigned the IRQ that was
1568 * raised.
1569 * host_int The contents of the HOST_INT
1570 * port.
1571 *
1572 * This function handles the Dummy interrupt, which is
1573 * raised whenever a test interrupt is generated by setting
1574 * the Req_Int bit of HOST_CMD to 1.
1575 *
1576 **************************************************************/
1577
1578 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1579 {
1580 netdev_info(dev, "Test interrupt\n");
1581 return 1;
1582
1583 }
1584
1585
1586
1587
1588 /***************************************************************
1589 * tlan_handle_tx_eoc
1590 *
1591 * Returns:
1592 * 1
1593 * Parms:
1594 * dev Device assigned the IRQ that was
1595 * raised.
1596 * host_int The contents of the HOST_INT
1597 * port.
1598 *
1599 * This driver is structured to determine EOC occurrences by
1600 * reading the CSTAT member of the list structure. Tx EOC
1601 * interrupts are disabled via the DIO INTDIS register.
1602 * However, TLAN chips before revision 3.0 didn't have this
1603 * functionality, so process EOC events if this is the
1604 * case.
1605 *
1606 **************************************************************/
1607
1608 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1609 {
1610 struct tlan_priv *priv = netdev_priv(dev);
1611 struct tlan_list *head_list;
1612 dma_addr_t head_list_phys;
1613 u32 ack = 1;
1614
1615 host_int = 0;
1616 if (priv->tlan_rev < 0x30) {
1617 TLAN_DBG(TLAN_DEBUG_TX,
1618 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1619 priv->tx_head, priv->tx_tail);
1620 head_list = priv->tx_list + priv->tx_head;
1621 head_list_phys = priv->tx_list_dma
1622 + sizeof(struct tlan_list)*priv->tx_head;
1623 if ((head_list->c_stat & TLAN_CSTAT_READY)
1624 == TLAN_CSTAT_READY) {
1625 netif_stop_queue(dev);
1626 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1627 ack |= TLAN_HC_GO;
1628 } else {
1629 priv->tx_in_progress = 0;
1630 }
1631 }
1632
1633 return ack;
1634
1635 }
1636
1637
1638
1639
1640 /***************************************************************
1641 * tlan_handle_status_check
1642 *
1643 * Returns:
1644 * 0 if Adapter check, 1 if Network Status check.
1645 * Parms:
1646 * dev Device assigned the IRQ that was
1647 * raised.
1648 * host_int The contents of the HOST_INT
1649 * port.
1650 *
1651 * This function handles Adapter Check/Network Status
1652 * interrupts generated by the adapter. It checks the
1653 * vector in the HOST_INT register to determine if it is
1654 * an Adapter Check interrupt. If so, it resets the
1655 * adapter. Otherwise it clears the status registers
1656 * and services the PHY.
1657 *
1658 **************************************************************/
1659
1660 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1661 {
1662 struct tlan_priv *priv = netdev_priv(dev);
1663 u32 ack;
1664 u32 error;
1665 u8 net_sts;
1666 u32 phy;
1667 u16 tlphy_ctl;
1668 u16 tlphy_sts;
1669
1670 ack = 1;
1671 if (host_int & TLAN_HI_IV_MASK) {
1672 netif_stop_queue(dev);
1673 error = inl(dev->base_addr + TLAN_CH_PARM);
1674 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1675 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1676 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1677
1678 schedule_work(&priv->tlan_tqueue);
1679
1680 netif_wake_queue(dev);
1681 ack = 0;
1682 } else {
1683 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1684 phy = priv->phy[priv->phy_num];
1685
1686 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1687 if (net_sts) {
1688 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1689 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1690 dev->name, (unsigned) net_sts);
1691 }
1692 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1693 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1694 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1695 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1696 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1697 tlphy_ctl |= TLAN_TC_SWAPOL;
1698 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1699 tlphy_ctl);
1700 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1701 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1702 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1703 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1704 tlphy_ctl);
1705 }
1706
1707 if (debug)
1708 tlan_phy_print(dev);
1709 }
1710 }
1711
1712 return ack;
1713
1714 }
1715
1716
1717
1718
1719 /***************************************************************
1720 * tlan_handle_rx_eoc
1721 *
1722 * Returns:
1723 * 1
1724 * Parms:
1725 * dev Device assigned the IRQ that was
1726 * raised.
1727 * host_int The contents of the HOST_INT
1728 * port.
1729 *
1730 * This driver is structured to determine EOC occurrences by
1731 * reading the CSTAT member of the list structure. Rx EOC
1732 * interrupts are disabled via the DIO INTDIS register.
1733 * However, TLAN chips before revision 3.0 didn't have this
1734 * CSTAT member or a INTDIS register, so if this chip is
1735 * pre-3.0, process EOC interrupts normally.
1736 *
1737 **************************************************************/
1738
1739 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1740 {
1741 struct tlan_priv *priv = netdev_priv(dev);
1742 dma_addr_t head_list_phys;
1743 u32 ack = 1;
1744
1745 if (priv->tlan_rev < 0x30) {
1746 TLAN_DBG(TLAN_DEBUG_RX,
1747 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1748 priv->rx_head, priv->rx_tail);
1749 head_list_phys = priv->rx_list_dma
1750 + sizeof(struct tlan_list)*priv->rx_head;
1751 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1752 ack |= TLAN_HC_GO | TLAN_HC_RT;
1753 priv->rx_eoc_count++;
1754 }
1755
1756 return ack;
1757
1758 }
1759
1760
1761
1762
1763 /*****************************************************************************
1764 ******************************************************************************
1765
1766 ThunderLAN driver timer function
1767
1768 ******************************************************************************
1769 *****************************************************************************/
1770
1771
1772 /***************************************************************
1773 * tlan_timer
1774 *
1775 * Returns:
1776 * Nothing
1777 * Parms:
1778 * data A value given to add timer when
1779 * add_timer was called.
1780 *
1781 * This function handles timed functionality for the
1782 * TLAN driver. The two current timer uses are for
1783 * delaying for autonegotionation and driving the ACT LED.
1784 * - Autonegotiation requires being allowed about
1785 * 2 1/2 seconds before attempting to transmit a
1786 * packet. It would be a very bad thing to hang
1787 * the kernel this long, so the driver doesn't
1788 * allow transmission 'til after this time, for
1789 * certain PHYs. It would be much nicer if all
1790 * PHYs were interrupt-capable like the internal
1791 * PHY.
1792 * - The ACT LED, which shows adapter activity, is
1793 * driven by the driver, and so must be left on
1794 * for a short period to power up the LED so it
1795 * can be seen. This delay can be changed by
1796 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1797 * if desired. 100 ms produces a slightly
1798 * sluggish response.
1799 *
1800 **************************************************************/
1801
1802 static void tlan_timer(unsigned long data)
1803 {
1804 struct net_device *dev = (struct net_device *) data;
1805 struct tlan_priv *priv = netdev_priv(dev);
1806 u32 elapsed;
1807 unsigned long flags = 0;
1808
1809 priv->timer.function = NULL;
1810
1811 switch (priv->timer_type) {
1812 #ifdef MONITOR
1813 case TLAN_TIMER_LINK_BEAT:
1814 tlan_phy_monitor(dev);
1815 break;
1816 #endif
1817 case TLAN_TIMER_PHY_PDOWN:
1818 tlan_phy_power_down(dev);
1819 break;
1820 case TLAN_TIMER_PHY_PUP:
1821 tlan_phy_power_up(dev);
1822 break;
1823 case TLAN_TIMER_PHY_RESET:
1824 tlan_phy_reset(dev);
1825 break;
1826 case TLAN_TIMER_PHY_START_LINK:
1827 tlan_phy_start_link(dev);
1828 break;
1829 case TLAN_TIMER_PHY_FINISH_AN:
1830 tlan_phy_finish_auto_neg(dev);
1831 break;
1832 case TLAN_TIMER_FINISH_RESET:
1833 tlan_finish_reset(dev);
1834 break;
1835 case TLAN_TIMER_ACTIVITY:
1836 spin_lock_irqsave(&priv->lock, flags);
1837 if (priv->timer.function == NULL) {
1838 elapsed = jiffies - priv->timer_set_at;
1839 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1840 tlan_dio_write8(dev->base_addr,
1841 TLAN_LED_REG, TLAN_LED_LINK);
1842 } else {
1843 priv->timer.function = tlan_timer;
1844 priv->timer.expires = priv->timer_set_at
1845 + TLAN_TIMER_ACT_DELAY;
1846 spin_unlock_irqrestore(&priv->lock, flags);
1847 add_timer(&priv->timer);
1848 break;
1849 }
1850 }
1851 spin_unlock_irqrestore(&priv->lock, flags);
1852 break;
1853 default:
1854 break;
1855 }
1856
1857 }
1858
1859
1860
1861
1862 /*****************************************************************************
1863 ******************************************************************************
1864
1865 ThunderLAN driver adapter related routines
1866
1867 ******************************************************************************
1868 *****************************************************************************/
1869
1870
1871 /***************************************************************
1872 * tlan_reset_lists
1873 *
1874 * Returns:
1875 * Nothing
1876 * Parms:
1877 * dev The device structure with the list
1878 * stuctures to be reset.
1879 *
1880 * This routine sets the variables associated with managing
1881 * the TLAN lists to their initial values.
1882 *
1883 **************************************************************/
1884
1885 static void tlan_reset_lists(struct net_device *dev)
1886 {
1887 struct tlan_priv *priv = netdev_priv(dev);
1888 int i;
1889 struct tlan_list *list;
1890 dma_addr_t list_phys;
1891 struct sk_buff *skb;
1892
1893 priv->tx_head = 0;
1894 priv->tx_tail = 0;
1895 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1896 list = priv->tx_list + i;
1897 list->c_stat = TLAN_CSTAT_UNUSED;
1898 list->buffer[0].address = 0;
1899 list->buffer[2].count = 0;
1900 list->buffer[2].address = 0;
1901 list->buffer[8].address = 0;
1902 list->buffer[9].address = 0;
1903 }
1904
1905 priv->rx_head = 0;
1906 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1907 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1908 list = priv->rx_list + i;
1909 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1910 list->c_stat = TLAN_CSTAT_READY;
1911 list->frame_size = TLAN_MAX_FRAME_SIZE;
1912 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1913 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1914 if (!skb)
1915 break;
1916
1917 list->buffer[0].address = pci_map_single(priv->pci_dev,
1918 skb->data,
1919 TLAN_MAX_FRAME_SIZE,
1920 PCI_DMA_FROMDEVICE);
1921 tlan_store_skb(list, skb);
1922 list->buffer[1].count = 0;
1923 list->buffer[1].address = 0;
1924 list->forward = list_phys + sizeof(struct tlan_list);
1925 }
1926
1927 /* in case ran out of memory early, clear bits */
1928 while (i < TLAN_NUM_RX_LISTS) {
1929 tlan_store_skb(priv->rx_list + i, NULL);
1930 ++i;
1931 }
1932 list->forward = 0;
1933
1934 }
1935
1936
1937 static void tlan_free_lists(struct net_device *dev)
1938 {
1939 struct tlan_priv *priv = netdev_priv(dev);
1940 int i;
1941 struct tlan_list *list;
1942 struct sk_buff *skb;
1943
1944 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1945 list = priv->tx_list + i;
1946 skb = tlan_get_skb(list);
1947 if (skb) {
1948 pci_unmap_single(
1949 priv->pci_dev,
1950 list->buffer[0].address,
1951 max(skb->len,
1952 (unsigned int)TLAN_MIN_FRAME_SIZE),
1953 PCI_DMA_TODEVICE);
1954 dev_kfree_skb_any(skb);
1955 list->buffer[8].address = 0;
1956 list->buffer[9].address = 0;
1957 }
1958 }
1959
1960 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1961 list = priv->rx_list + i;
1962 skb = tlan_get_skb(list);
1963 if (skb) {
1964 pci_unmap_single(priv->pci_dev,
1965 list->buffer[0].address,
1966 TLAN_MAX_FRAME_SIZE,
1967 PCI_DMA_FROMDEVICE);
1968 dev_kfree_skb_any(skb);
1969 list->buffer[8].address = 0;
1970 list->buffer[9].address = 0;
1971 }
1972 }
1973 }
1974
1975
1976
1977
1978 /***************************************************************
1979 * tlan_print_dio
1980 *
1981 * Returns:
1982 * Nothing
1983 * Parms:
1984 * io_base Base IO port of the device of
1985 * which to print DIO registers.
1986 *
1987 * This function prints out all the internal (DIO)
1988 * registers of a TLAN chip.
1989 *
1990 **************************************************************/
1991
1992 static void tlan_print_dio(u16 io_base)
1993 {
1994 u32 data0, data1;
1995 int i;
1996
1997 pr_info("Contents of internal registers for io base 0x%04hx\n",
1998 io_base);
1999 pr_info("Off. +0 +4\n");
2000 for (i = 0; i < 0x4C; i += 8) {
2001 data0 = tlan_dio_read32(io_base, i);
2002 data1 = tlan_dio_read32(io_base, i + 0x4);
2003 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2004 }
2005
2006 }
2007
2008
2009
2010
2011 /***************************************************************
2012 * TLan_PrintList
2013 *
2014 * Returns:
2015 * Nothing
2016 * Parms:
2017 * list A pointer to the struct tlan_list structure to
2018 * be printed.
2019 * type A string to designate type of list,
2020 * "Rx" or "Tx".
2021 * num The index of the list.
2022 *
2023 * This function prints out the contents of the list
2024 * pointed to by the list parameter.
2025 *
2026 **************************************************************/
2027
2028 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2029 {
2030 int i;
2031
2032 pr_info("%s List %d at %p\n", type, num, list);
2033 pr_info(" Forward = 0x%08x\n", list->forward);
2034 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2035 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2036 /* for (i = 0; i < 10; i++) { */
2037 for (i = 0; i < 2; i++) {
2038 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2039 i, list->buffer[i].count, list->buffer[i].address);
2040 }
2041
2042 }
2043
2044
2045
2046
2047 /***************************************************************
2048 * tlan_read_and_clear_stats
2049 *
2050 * Returns:
2051 * Nothing
2052 * Parms:
2053 * dev Pointer to device structure of adapter
2054 * to which to read stats.
2055 * record Flag indicating whether to add
2056 *
2057 * This functions reads all the internal status registers
2058 * of the TLAN chip, which clears them as a side effect.
2059 * It then either adds the values to the device's status
2060 * struct, or discards them, depending on whether record
2061 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2062 *
2063 **************************************************************/
2064
2065 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2066 {
2067 u32 tx_good, tx_under;
2068 u32 rx_good, rx_over;
2069 u32 def_tx, crc, code;
2070 u32 multi_col, single_col;
2071 u32 excess_col, late_col, loss;
2072
2073 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2074 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2075 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2076 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2077 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2078
2079 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2080 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2081 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2082 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2083 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2084
2085 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2086 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2087 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2088 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2089 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2090
2091 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2092 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2093 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2094 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2095 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2096
2097 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2098 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2099 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2100 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2101
2102 if (record) {
2103 dev->stats.rx_packets += rx_good;
2104 dev->stats.rx_errors += rx_over + crc + code;
2105 dev->stats.tx_packets += tx_good;
2106 dev->stats.tx_errors += tx_under + loss;
2107 dev->stats.collisions += multi_col
2108 + single_col + excess_col + late_col;
2109
2110 dev->stats.rx_over_errors += rx_over;
2111 dev->stats.rx_crc_errors += crc;
2112 dev->stats.rx_frame_errors += code;
2113
2114 dev->stats.tx_aborted_errors += tx_under;
2115 dev->stats.tx_carrier_errors += loss;
2116 }
2117
2118 }
2119
2120
2121
2122
2123 /***************************************************************
2124 * TLan_Reset
2125 *
2126 * Returns:
2127 * 0
2128 * Parms:
2129 * dev Pointer to device structure of adapter
2130 * to be reset.
2131 *
2132 * This function resets the adapter and it's physical
2133 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2134 * Programmer's Guide" for details. The routine tries to
2135 * implement what is detailed there, though adjustments
2136 * have been made.
2137 *
2138 **************************************************************/
2139
2140 static void
2141 tlan_reset_adapter(struct net_device *dev)
2142 {
2143 struct tlan_priv *priv = netdev_priv(dev);
2144 int i;
2145 u32 addr;
2146 u32 data;
2147 u8 data8;
2148
2149 priv->tlan_full_duplex = false;
2150 priv->phy_online = 0;
2151 netif_carrier_off(dev);
2152
2153 /* 1. Assert reset bit. */
2154
2155 data = inl(dev->base_addr + TLAN_HOST_CMD);
2156 data |= TLAN_HC_AD_RST;
2157 outl(data, dev->base_addr + TLAN_HOST_CMD);
2158
2159 udelay(1000);
2160
2161 /* 2. Turn off interrupts. (Probably isn't necessary) */
2162
2163 data = inl(dev->base_addr + TLAN_HOST_CMD);
2164 data |= TLAN_HC_INT_OFF;
2165 outl(data, dev->base_addr + TLAN_HOST_CMD);
2166
2167 /* 3. Clear AREGs and HASHs. */
2168
2169 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2170 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2171
2172 /* 4. Setup NetConfig register. */
2173
2174 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2175 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2176
2177 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2178
2179 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2180 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2181
2182 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2183
2184 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2185 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2186 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2187
2188 /* 7. Setup the remaining registers. */
2189
2190 if (priv->tlan_rev >= 0x30) {
2191 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2192 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2193 }
2194 tlan_phy_detect(dev);
2195 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2196
2197 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2198 data |= TLAN_NET_CFG_BIT;
2199 if (priv->aui == 1) {
2200 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2201 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2202 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2203 priv->tlan_full_duplex = true;
2204 } else {
2205 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2206 }
2207 }
2208
2209 if (priv->phy_num == 0)
2210 data |= TLAN_NET_CFG_PHY_EN;
2211 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2212
2213 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2214 tlan_finish_reset(dev);
2215 else
2216 tlan_phy_power_down(dev);
2217
2218 }
2219
2220
2221
2222
2223 static void
2224 tlan_finish_reset(struct net_device *dev)
2225 {
2226 struct tlan_priv *priv = netdev_priv(dev);
2227 u8 data;
2228 u32 phy;
2229 u8 sio;
2230 u16 status;
2231 u16 partner;
2232 u16 tlphy_ctl;
2233 u16 tlphy_par;
2234 u16 tlphy_id1, tlphy_id2;
2235 int i;
2236
2237 phy = priv->phy[priv->phy_num];
2238
2239 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2240 if (priv->tlan_full_duplex)
2241 data |= TLAN_NET_CMD_DUPLEX;
2242 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2243 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2244 if (priv->phy_num == 0)
2245 data |= TLAN_NET_MASK_MASK7;
2246 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2247 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2248 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2249 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2250
2251 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2252 (priv->aui)) {
2253 status = MII_GS_LINK;
2254 netdev_info(dev, "Link forced\n");
2255 } else {
2256 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2257 udelay(1000);
2258 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2259 if ((status & MII_GS_LINK) &&
2260 /* We only support link info on Nat.Sem. PHY's */
2261 (tlphy_id1 == NAT_SEM_ID1) &&
2262 (tlphy_id2 == NAT_SEM_ID2)) {
2263 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
2264 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);
2265
2266 netdev_info(dev,
2267 "Link active with %s %uMbps %s-Duplex\n",
2268 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2269 ? "forced" : "Autonegotiation enabled,",
2270 tlphy_par & TLAN_PHY_SPEED_100
2271 ? 100 : 10,
2272 tlphy_par & TLAN_PHY_DUPLEX_FULL
2273 ? "Full" : "Half");
2274
2275 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2276 netdev_info(dev, "Partner capability:");
2277 for (i = 5; i < 10; i++)
2278 if (partner & (1 << i))
2279 pr_cont(" %s", media[i-5]);
2280 pr_cont("\n");
2281 }
2282
2283 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2284 TLAN_LED_LINK);
2285 #ifdef MONITOR
2286 /* We have link beat..for now anyway */
2287 priv->link = 1;
2288 /*Enabling link beat monitoring */
2289 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2290 #endif
2291 } else if (status & MII_GS_LINK) {
2292 netdev_info(dev, "Link active\n");
2293 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2294 TLAN_LED_LINK);
2295 }
2296 }
2297
2298 if (priv->phy_num == 0) {
2299 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2300 tlphy_ctl |= TLAN_TC_INTEN;
2301 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2302 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2303 sio |= TLAN_NET_SIO_MINTEN;
2304 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2305 }
2306
2307 if (status & MII_GS_LINK) {
2308 tlan_set_mac(dev, 0, dev->dev_addr);
2309 priv->phy_online = 1;
2310 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2311 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2312 outb((TLAN_HC_REQ_INT >> 8),
2313 dev->base_addr + TLAN_HOST_CMD + 1);
2314 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2315 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2316 netif_carrier_on(dev);
2317 } else {
2318 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2319 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2320 return;
2321 }
2322 tlan_set_multicast_list(dev);
2323
2324 }
2325
2326
2327
2328
2329 /***************************************************************
2330 * tlan_set_mac
2331 *
2332 * Returns:
2333 * Nothing
2334 * Parms:
2335 * dev Pointer to device structure of adapter
2336 * on which to change the AREG.
2337 * areg The AREG to set the address in (0 - 3).
2338 * mac A pointer to an array of chars. Each
2339 * element stores one byte of the address.
2340 * IE, it isn't in ascii.
2341 *
2342 * This function transfers a MAC address to one of the
2343 * TLAN AREGs (address registers). The TLAN chip locks
2344 * the register on writing to offset 0 and unlocks the
2345 * register after writing to offset 5. If NULL is passed
2346 * in mac, then the AREG is filled with 0's.
2347 *
2348 **************************************************************/
2349
2350 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2351 {
2352 int i;
2353
2354 areg *= 6;
2355
2356 if (mac != NULL) {
2357 for (i = 0; i < 6; i++)
2358 tlan_dio_write8(dev->base_addr,
2359 TLAN_AREG_0 + areg + i, mac[i]);
2360 } else {
2361 for (i = 0; i < 6; i++)
2362 tlan_dio_write8(dev->base_addr,
2363 TLAN_AREG_0 + areg + i, 0);
2364 }
2365
2366 }
2367
2368
2369
2370
2371 /*****************************************************************************
2372 ******************************************************************************
2373
2374 ThunderLAN driver PHY layer routines
2375
2376 ******************************************************************************
2377 *****************************************************************************/
2378
2379
2380
2381 /*********************************************************************
2382 * tlan_phy_print
2383 *
2384 * Returns:
2385 * Nothing
2386 * Parms:
2387 * dev A pointer to the device structure of the
2388 * TLAN device having the PHYs to be detailed.
2389 *
2390 * This function prints the registers a PHY (aka transceiver).
2391 *
2392 ********************************************************************/
2393
2394 static void tlan_phy_print(struct net_device *dev)
2395 {
2396 struct tlan_priv *priv = netdev_priv(dev);
2397 u16 i, data0, data1, data2, data3, phy;
2398
2399 phy = priv->phy[priv->phy_num];
2400
2401 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2402 netdev_info(dev, "Unmanaged PHY\n");
2403 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2404 netdev_info(dev, "PHY 0x%02x\n", phy);
2405 pr_info(" Off. +0 +1 +2 +3\n");
2406 for (i = 0; i < 0x20; i += 4) {
2407 tlan_mii_read_reg(dev, phy, i, &data0);
2408 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2409 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2410 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2411 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2412 i, data0, data1, data2, data3);
2413 }
2414 } else {
2415 netdev_info(dev, "Invalid PHY\n");
2416 }
2417
2418 }
2419
2420
2421
2422
2423 /*********************************************************************
2424 * tlan_phy_detect
2425 *
2426 * Returns:
2427 * Nothing
2428 * Parms:
2429 * dev A pointer to the device structure of the adapter
2430 * for which the PHY needs determined.
2431 *
2432 * So far I've found that adapters which have external PHYs
2433 * may also use the internal PHY for part of the functionality.
2434 * (eg, AUI/Thinnet). This function finds out if this TLAN
2435 * chip has an internal PHY, and then finds the first external
2436 * PHY (starting from address 0) if it exists).
2437 *
2438 ********************************************************************/
2439
2440 static void tlan_phy_detect(struct net_device *dev)
2441 {
2442 struct tlan_priv *priv = netdev_priv(dev);
2443 u16 control;
2444 u16 hi;
2445 u16 lo;
2446 u32 phy;
2447
2448 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2449 priv->phy_num = 0xffff;
2450 return;
2451 }
2452
2453 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2454
2455 if (hi != 0xffff)
2456 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2457 else
2458 priv->phy[0] = TLAN_PHY_NONE;
2459
2460 priv->phy[1] = TLAN_PHY_NONE;
2461 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2462 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2463 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2464 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2465 if ((control != 0xffff) ||
2466 (hi != 0xffff) || (lo != 0xffff)) {
2467 TLAN_DBG(TLAN_DEBUG_GNRL,
2468 "PHY found at %02x %04x %04x %04x\n",
2469 phy, control, hi, lo);
2470 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2471 (phy != TLAN_PHY_MAX_ADDR)) {
2472 priv->phy[1] = phy;
2473 }
2474 }
2475 }
2476
2477 if (priv->phy[1] != TLAN_PHY_NONE)
2478 priv->phy_num = 1;
2479 else if (priv->phy[0] != TLAN_PHY_NONE)
2480 priv->phy_num = 0;
2481 else
2482 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2483
2484 }
2485
2486
2487
2488
2489 static void tlan_phy_power_down(struct net_device *dev)
2490 {
2491 struct tlan_priv *priv = netdev_priv(dev);
2492 u16 value;
2493
2494 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2495 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2496 tlan_mii_sync(dev->base_addr);
2497 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2498 if ((priv->phy_num == 0) &&
2499 (priv->phy[1] != TLAN_PHY_NONE) &&
2500 (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2501 tlan_mii_sync(dev->base_addr);
2502 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2503 }
2504
2505 /* Wait for 50 ms and powerup
2506 * This is abitrary. It is intended to make sure the
2507 * transceiver settles.
2508 */
2509 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2510
2511 }
2512
2513
2514
2515
2516 static void tlan_phy_power_up(struct net_device *dev)
2517 {
2518 struct tlan_priv *priv = netdev_priv(dev);
2519 u16 value;
2520
2521 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2522 tlan_mii_sync(dev->base_addr);
2523 value = MII_GC_LOOPBK;
2524 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2525 tlan_mii_sync(dev->base_addr);
2526 /* Wait for 500 ms and reset the
2527 * transceiver. The TLAN docs say both 50 ms and
2528 * 500 ms, so do the longer, just in case.
2529 */
2530 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2531
2532 }
2533
2534
2535
2536
2537 static void tlan_phy_reset(struct net_device *dev)
2538 {
2539 struct tlan_priv *priv = netdev_priv(dev);
2540 u16 phy;
2541 u16 value;
2542
2543 phy = priv->phy[priv->phy_num];
2544
2545 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2546 tlan_mii_sync(dev->base_addr);
2547 value = MII_GC_LOOPBK | MII_GC_RESET;
2548 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2549 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2550 while (value & MII_GC_RESET)
2551 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2552
2553 /* Wait for 500 ms and initialize.
2554 * I don't remember why I wait this long.
2555 * I've changed this to 50ms, as it seems long enough.
2556 */
2557 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2558
2559 }
2560
2561
2562
2563
2564 static void tlan_phy_start_link(struct net_device *dev)
2565 {
2566 struct tlan_priv *priv = netdev_priv(dev);
2567 u16 ability;
2568 u16 control;
2569 u16 data;
2570 u16 phy;
2571 u16 status;
2572 u16 tctl;
2573
2574 phy = priv->phy[priv->phy_num];
2575 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2576 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2577 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2578
2579 if ((status & MII_GS_AUTONEG) &&
2580 (!priv->aui)) {
2581 ability = status >> 11;
2582 if (priv->speed == TLAN_SPEED_10 &&
2583 priv->duplex == TLAN_DUPLEX_HALF) {
2584 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2585 } else if (priv->speed == TLAN_SPEED_10 &&
2586 priv->duplex == TLAN_DUPLEX_FULL) {
2587 priv->tlan_full_duplex = true;
2588 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2589 } else if (priv->speed == TLAN_SPEED_100 &&
2590 priv->duplex == TLAN_DUPLEX_HALF) {
2591 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2592 } else if (priv->speed == TLAN_SPEED_100 &&
2593 priv->duplex == TLAN_DUPLEX_FULL) {
2594 priv->tlan_full_duplex = true;
2595 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2596 } else {
2597
2598 /* Set Auto-Neg advertisement */
2599 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2600 (ability << 5) | 1);
2601 /* Enablee Auto-Neg */
2602 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2603 /* Restart Auto-Neg */
2604 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2605 /* Wait for 4 sec for autonegotiation
2606 * to complete. The max spec time is less than this
2607 * but the card need additional time to start AN.
2608 * .5 sec should be plenty extra.
2609 */
2610 netdev_info(dev, "Starting autonegotiation\n");
2611 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2612 return;
2613 }
2614
2615 }
2616
2617 if ((priv->aui) && (priv->phy_num != 0)) {
2618 priv->phy_num = 0;
2619 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2620 | TLAN_NET_CFG_PHY_EN;
2621 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2622 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2623 return;
2624 } else if (priv->phy_num == 0) {
2625 control = 0;
2626 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2627 if (priv->aui) {
2628 tctl |= TLAN_TC_AUISEL;
2629 } else {
2630 tctl &= ~TLAN_TC_AUISEL;
2631 if (priv->duplex == TLAN_DUPLEX_FULL) {
2632 control |= MII_GC_DUPLEX;
2633 priv->tlan_full_duplex = true;
2634 }
2635 if (priv->speed == TLAN_SPEED_100)
2636 control |= MII_GC_SPEEDSEL;
2637 }
2638 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2639 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2640 }
2641
2642 /* Wait for 2 sec to give the transceiver time
2643 * to establish link.
2644 */
2645 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2646
2647 }
2648
2649
2650
2651
2652 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2653 {
2654 struct tlan_priv *priv = netdev_priv(dev);
2655 u16 an_adv;
2656 u16 an_lpa;
2657 u16 data;
2658 u16 mode;
2659 u16 phy;
2660 u16 status;
2661
2662 phy = priv->phy[priv->phy_num];
2663
2664 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2665 udelay(1000);
2666 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2667
2668 if (!(status & MII_GS_AUTOCMPLT)) {
2669 /* Wait for 8 sec to give the process
2670 * more time. Perhaps we should fail after a while.
2671 */
2672 if (!priv->neg_be_verbose++) {
2673 pr_info("Giving autonegotiation more time.\n");
2674 pr_info("Please check that your adapter has\n");
2675 pr_info("been properly connected to a HUB or Switch.\n");
2676 pr_info("Trying to establish link in the background...\n");
2677 }
2678 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2679 return;
2680 }
2681
2682 netdev_info(dev, "Autonegotiation complete\n");
2683 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2684 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2685 mode = an_adv & an_lpa & 0x03E0;
2686 if (mode & 0x0100)
2687 priv->tlan_full_duplex = true;
2688 else if (!(mode & 0x0080) && (mode & 0x0040))
2689 priv->tlan_full_duplex = true;
2690
2691 if ((!(mode & 0x0180)) &&
2692 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2693 (priv->phy_num != 0)) {
2694 priv->phy_num = 0;
2695 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2696 | TLAN_NET_CFG_PHY_EN;
2697 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2698 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2699 return;
2700 }
2701
2702 if (priv->phy_num == 0) {
2703 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2704 (an_adv & an_lpa & 0x0040)) {
2705 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2706 MII_GC_AUTOENB | MII_GC_DUPLEX);
2707 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2708 } else {
2709 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2710 MII_GC_AUTOENB);
2711 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2712 }
2713 }
2714
2715 /* Wait for 100 ms. No reason in partiticular.
2716 */
2717 tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2718
2719 }
2720
2721 #ifdef MONITOR
2722
2723 /*********************************************************************
2724 *
2725 * tlan_phy_monitor
2726 *
2727 * Returns:
2728 * None
2729 *
2730 * Params:
2731 * dev The device structure of this device.
2732 *
2733 *
2734 * This function monitors PHY condition by reading the status
2735 * register via the MII bus. This can be used to give info
2736 * about link changes (up/down), and possible switch to alternate
2737 * media.
2738 *
2739 *******************************************************************/
2740
2741 void tlan_phy_monitor(struct net_device *dev)
2742 {
2743 struct tlan_priv *priv = netdev_priv(dev);
2744 u16 phy;
2745 u16 phy_status;
2746
2747 phy = priv->phy[priv->phy_num];
2748
2749 /* Get PHY status register */
2750 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2751
2752 /* Check if link has been lost */
2753 if (!(phy_status & MII_GS_LINK)) {
2754 if (priv->link) {
2755 priv->link = 0;
2756 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2757 dev->name);
2758 netif_carrier_off(dev);
2759 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2760 return;
2761 }
2762 }
2763
2764 /* Link restablished? */
2765 if ((phy_status & MII_GS_LINK) && !priv->link) {
2766 priv->link = 1;
2767 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2768 dev->name);
2769 netif_carrier_on(dev);
2770 }
2771
2772 /* Setup a new monitor */
2773 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2774 }
2775
2776 #endif /* MONITOR */
2777
2778
2779 /*****************************************************************************
2780 ******************************************************************************
2781
2782 ThunderLAN driver MII routines
2783
2784 these routines are based on the information in chap. 2 of the
2785 "ThunderLAN Programmer's Guide", pp. 15-24.
2786
2787 ******************************************************************************
2788 *****************************************************************************/
2789
2790
2791 /***************************************************************
2792 * tlan_mii_read_reg
2793 *
2794 * Returns:
2795 * false if ack received ok
2796 * true if no ack received or other error
2797 *
2798 * Parms:
2799 * dev The device structure containing
2800 * The io address and interrupt count
2801 * for this device.
2802 * phy The address of the PHY to be queried.
2803 * reg The register whose contents are to be
2804 * retrieved.
2805 * val A pointer to a variable to store the
2806 * retrieved value.
2807 *
2808 * This function uses the TLAN's MII bus to retrieve the contents
2809 * of a given register on a PHY. It sends the appropriate info
2810 * and then reads the 16-bit register value from the MII bus via
2811 * the TLAN SIO register.
2812 *
2813 **************************************************************/
2814
2815 static bool
2816 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2817 {
2818 u8 nack;
2819 u16 sio, tmp;
2820 u32 i;
2821 bool err;
2822 int minten;
2823 struct tlan_priv *priv = netdev_priv(dev);
2824 unsigned long flags = 0;
2825
2826 err = false;
2827 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2828 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2829
2830 if (!in_irq())
2831 spin_lock_irqsave(&priv->lock, flags);
2832
2833 tlan_mii_sync(dev->base_addr);
2834
2835 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2836 if (minten)
2837 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2838
2839 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2840 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2841 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2842 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2843
2844
2845 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2846
2847 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2848 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2849 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2850
2851 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2852 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2853 if (nack) { /* no ACK, so fake it */
2854 for (i = 0; i < 16; i++) {
2855 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2856 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2857 }
2858 tmp = 0xffff;
2859 err = true;
2860 } else { /* ACK, so read data */
2861 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2862 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2863 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2864 tmp |= i;
2865 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2866 }
2867 }
2868
2869
2870 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2871 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2872
2873 if (minten)
2874 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2875
2876 *val = tmp;
2877
2878 if (!in_irq())
2879 spin_unlock_irqrestore(&priv->lock, flags);
2880
2881 return err;
2882
2883 }
2884
2885
2886
2887
2888 /***************************************************************
2889 * tlan_mii_send_data
2890 *
2891 * Returns:
2892 * Nothing
2893 * Parms:
2894 * base_port The base IO port of the adapter in
2895 * question.
2896 * dev The address of the PHY to be queried.
2897 * data The value to be placed on the MII bus.
2898 * num_bits The number of bits in data that are to
2899 * be placed on the MII bus.
2900 *
2901 * This function sends on sequence of bits on the MII
2902 * configuration bus.
2903 *
2904 **************************************************************/
2905
2906 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2907 {
2908 u16 sio;
2909 u32 i;
2910
2911 if (num_bits == 0)
2912 return;
2913
2914 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2915 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2916 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2917
2918 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2919 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2920 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2921 if (data & i)
2922 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2923 else
2924 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2925 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2926 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2927 }
2928
2929 }
2930
2931
2932
2933
2934 /***************************************************************
2935 * TLan_MiiSync
2936 *
2937 * Returns:
2938 * Nothing
2939 * Parms:
2940 * base_port The base IO port of the adapter in
2941 * question.
2942 *
2943 * This functions syncs all PHYs in terms of the MII configuration
2944 * bus.
2945 *
2946 **************************************************************/
2947
2948 static void tlan_mii_sync(u16 base_port)
2949 {
2950 int i;
2951 u16 sio;
2952
2953 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2954 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2955
2956 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2957 for (i = 0; i < 32; i++) {
2958 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2959 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2960 }
2961
2962 }
2963
2964
2965
2966
2967 /***************************************************************
2968 * tlan_mii_write_reg
2969 *
2970 * Returns:
2971 * Nothing
2972 * Parms:
2973 * dev The device structure for the device
2974 * to write to.
2975 * phy The address of the PHY to be written to.
2976 * reg The register whose contents are to be
2977 * written.
2978 * val The value to be written to the register.
2979 *
2980 * This function uses the TLAN's MII bus to write the contents of a
2981 * given register on a PHY. It sends the appropriate info and then
2982 * writes the 16-bit register value from the MII configuration bus
2983 * via the TLAN SIO register.
2984 *
2985 **************************************************************/
2986
2987 static void
2988 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2989 {
2990 u16 sio;
2991 int minten;
2992 unsigned long flags = 0;
2993 struct tlan_priv *priv = netdev_priv(dev);
2994
2995 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2996 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2997
2998 if (!in_irq())
2999 spin_lock_irqsave(&priv->lock, flags);
3000
3001 tlan_mii_sync(dev->base_addr);
3002
3003 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3004 if (minten)
3005 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3006
3007 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3008 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3009 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3010 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3011
3012 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3013 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3014
3015 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3016 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3017
3018 if (minten)
3019 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3020
3021 if (!in_irq())
3022 spin_unlock_irqrestore(&priv->lock, flags);
3023
3024 }
3025
3026
3027
3028
3029 /*****************************************************************************
3030 ******************************************************************************
3031
3032 ThunderLAN driver eeprom routines
3033
3034 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3035 EEPROM. these functions are based on information in microchip's
3036 data sheet. I don't know how well this functions will work with
3037 other Eeproms.
3038
3039 ******************************************************************************
3040 *****************************************************************************/
3041
3042
3043 /***************************************************************
3044 * tlan_ee_send_start
3045 *
3046 * Returns:
3047 * Nothing
3048 * Parms:
3049 * io_base The IO port base address for the
3050 * TLAN device with the EEPROM to
3051 * use.
3052 *
3053 * This function sends a start cycle to an EEPROM attached
3054 * to a TLAN chip.
3055 *
3056 **************************************************************/
3057
3058 static void tlan_ee_send_start(u16 io_base)
3059 {
3060 u16 sio;
3061
3062 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3063 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3064
3065 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3066 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3067 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3068 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3069 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3070
3071 }
3072
3073
3074
3075
3076 /***************************************************************
3077 * tlan_ee_send_byte
3078 *
3079 * Returns:
3080 * If the correct ack was received, 0, otherwise 1
3081 * Parms: io_base The IO port base address for the
3082 * TLAN device with the EEPROM to
3083 * use.
3084 * data The 8 bits of information to
3085 * send to the EEPROM.
3086 * stop If TLAN_EEPROM_STOP is passed, a
3087 * stop cycle is sent after the
3088 * byte is sent after the ack is
3089 * read.
3090 *
3091 * This function sends a byte on the serial EEPROM line,
3092 * driving the clock to send each bit. The function then
3093 * reverses transmission direction and reads an acknowledge
3094 * bit.
3095 *
3096 **************************************************************/
3097
3098 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3099 {
3100 int err;
3101 u8 place;
3102 u16 sio;
3103
3104 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3105 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3106
3107 /* Assume clock is low, tx is enabled; */
3108 for (place = 0x80; place != 0; place >>= 1) {
3109 if (place & data)
3110 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3111 else
3112 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3113 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3114 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3115 }
3116 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3117 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3118 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3119 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3120 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3121
3122 if ((!err) && stop) {
3123 /* STOP, raise data while clock is high */
3124 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3125 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3126 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3127 }
3128
3129 return err;
3130
3131 }
3132
3133
3134
3135
3136 /***************************************************************
3137 * tlan_ee_receive_byte
3138 *
3139 * Returns:
3140 * Nothing
3141 * Parms:
3142 * io_base The IO port base address for the
3143 * TLAN device with the EEPROM to
3144 * use.
3145 * data An address to a char to hold the
3146 * data sent from the EEPROM.
3147 * stop If TLAN_EEPROM_STOP is passed, a
3148 * stop cycle is sent after the
3149 * byte is received, and no ack is
3150 * sent.
3151 *
3152 * This function receives 8 bits of data from the EEPROM
3153 * over the serial link. It then sends and ack bit, or no
3154 * ack and a stop bit. This function is used to retrieve
3155 * data after the address of a byte in the EEPROM has been
3156 * sent.
3157 *
3158 **************************************************************/
3159
3160 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3161 {
3162 u8 place;
3163 u16 sio;
3164
3165 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3166 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3167 *data = 0;
3168
3169 /* Assume clock is low, tx is enabled; */
3170 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3171 for (place = 0x80; place; place >>= 1) {
3172 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3173 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3174 *data |= place;
3175 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3176 }
3177
3178 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3179 if (!stop) {
3180 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3181 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3182 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3183 } else {
3184 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3185 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3186 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3187 /* STOP, raise data while clock is high */
3188 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3189 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3190 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3191 }
3192
3193 }
3194
3195
3196
3197
3198 /***************************************************************
3199 * tlan_ee_read_byte
3200 *
3201 * Returns:
3202 * No error = 0, else, the stage at which the error
3203 * occurred.
3204 * Parms:
3205 * io_base The IO port base address for the
3206 * TLAN device with the EEPROM to
3207 * use.
3208 * ee_addr The address of the byte in the
3209 * EEPROM whose contents are to be
3210 * retrieved.
3211 * data An address to a char to hold the
3212 * data obtained from the EEPROM.
3213 *
3214 * This function reads a byte of information from an byte
3215 * cell in the EEPROM.
3216 *
3217 **************************************************************/
3218
3219 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3220 {
3221 int err;
3222 struct tlan_priv *priv = netdev_priv(dev);
3223 unsigned long flags = 0;
3224 int ret = 0;
3225
3226 spin_lock_irqsave(&priv->lock, flags);
3227
3228 tlan_ee_send_start(dev->base_addr);
3229 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3230 if (err) {
3231 ret = 1;
3232 goto fail;
3233 }
3234 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3235 if (err) {
3236 ret = 2;
3237 goto fail;
3238 }
3239 tlan_ee_send_start(dev->base_addr);
3240 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3241 if (err) {
3242 ret = 3;
3243 goto fail;
3244 }
3245 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3246 fail:
3247 spin_unlock_irqrestore(&priv->lock, flags);
3248
3249 return ret;
3250
3251 }
3252
3253
3254
Linux with added FPC-III support