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