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 /* Turn on debugging.
73 * See Documentation/networking/device_drivers/ethernet/ti/tlan.rst for details
74 */
75 static int debug;
76 module_param(debug, int, 0);
77 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
78
79 static const char tlan_signature[] = "TLAN";
80 static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
81 static int tlan_have_pci;
82 static int tlan_have_eisa;
83
84 static const char * const media[] = {
85 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
86 "100BaseTx-FD", "100BaseT4", NULL
87 };
88
89 static struct board {
90 const char *device_label;
91 u32 flags;
92 u16 addr_ofs;
93 } board_info[] = {
94 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
95 { "Compaq Netelligent 10/100 TX PCI UTP",
96 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
97 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
98 { "Compaq NetFlex-3/P",
99 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
100 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
101 { "Compaq Netelligent Integrated 10/100 TX UTP",
102 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
103 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
104 TLAN_ADAPTER_NONE, 0x83 },
105 { "Compaq Netelligent 10/100 TX Embedded UTP",
106 TLAN_ADAPTER_NONE, 0x83 },
107 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
108 { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
109 TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
110 { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
111 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 const struct pci_device_id 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, unsigned int txqueue);
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(struct timer_list *t);
178 static void tlan_phy_monitor(struct timer_list *t);
179
180 static void tlan_reset_lists(struct net_device *);
181 static void tlan_free_lists(struct net_device *);
182 static void tlan_print_dio(u16);
183 static void tlan_print_list(struct tlan_list *, char *, int);
184 static void tlan_read_and_clear_stats(struct net_device *, int);
185 static void tlan_reset_adapter(struct net_device *);
186 static void tlan_finish_reset(struct net_device *);
187 static void tlan_set_mac(struct net_device *, int areg, char *mac);
188
189 static void tlan_phy_print(struct net_device *);
190 static void tlan_phy_detect(struct net_device *);
191 static void tlan_phy_power_down(struct net_device *);
192 static void tlan_phy_power_up(struct net_device *);
193 static void tlan_phy_reset(struct net_device *);
194 static void tlan_phy_start_link(struct net_device *);
195 static void tlan_phy_finish_auto_neg(struct net_device *);
196
197 /*
198 static int tlan_phy_nop(struct net_device *);
199 static int tlan_phy_internal_check(struct net_device *);
200 static int tlan_phy_internal_service(struct net_device *);
201 static int tlan_phy_dp83840a_check(struct net_device *);
202 */
203
204 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
205 static void tlan_mii_send_data(u16, u32, unsigned);
206 static void tlan_mii_sync(u16);
207 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
208
209 static void tlan_ee_send_start(u16);
210 static int tlan_ee_send_byte(u16, u8, int);
211 static void tlan_ee_receive_byte(u16, u8 *, int);
212 static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
213
214
215 static inline void
tlan_store_skb(struct tlan_list * tag,struct sk_buff * skb)216 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
217 {
218 unsigned long addr = (unsigned long)skb;
219 tag->buffer[9].address = addr;
220 tag->buffer[8].address = upper_32_bits(addr);
221 }
222
223 static inline struct sk_buff *
tlan_get_skb(const struct tlan_list * tag)224 tlan_get_skb(const struct tlan_list *tag)
225 {
226 unsigned long addr;
227
228 addr = tag->buffer[9].address;
229 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
230 return (struct sk_buff *) addr;
231 }
232
233 static u32
234 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
235 NULL,
236 tlan_handle_tx_eof,
237 tlan_handle_stat_overflow,
238 tlan_handle_rx_eof,
239 tlan_handle_dummy,
240 tlan_handle_tx_eoc,
241 tlan_handle_status_check,
242 tlan_handle_rx_eoc
243 };
244
245 static inline void
tlan_set_timer(struct net_device * dev,u32 ticks,u32 type)246 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
247 {
248 struct tlan_priv *priv = netdev_priv(dev);
249 unsigned long flags = 0;
250
251 if (!in_irq())
252 spin_lock_irqsave(&priv->lock, flags);
253 if (priv->timer.function != NULL &&
254 priv->timer_type != TLAN_TIMER_ACTIVITY) {
255 if (!in_irq())
256 spin_unlock_irqrestore(&priv->lock, flags);
257 return;
258 }
259 priv->timer.function = tlan_timer;
260 if (!in_irq())
261 spin_unlock_irqrestore(&priv->lock, flags);
262
263 priv->timer_set_at = jiffies;
264 priv->timer_type = type;
265 mod_timer(&priv->timer, jiffies + ticks);
266
267 }
268
269
270 /*****************************************************************************
271 ******************************************************************************
272
273 ThunderLAN driver primary functions
274
275 these functions are more or less common to all linux network drivers.
276
277 ******************************************************************************
278 *****************************************************************************/
279
280
281
282
283
284 /***************************************************************
285 * tlan_remove_one
286 *
287 * Returns:
288 * Nothing
289 * Parms:
290 * None
291 *
292 * Goes through the TLanDevices list and frees the device
293 * structs and memory associated with each device (lists
294 * and buffers). It also ureserves the IO port regions
295 * associated with this device.
296 *
297 **************************************************************/
298
299
tlan_remove_one(struct pci_dev * pdev)300 static void tlan_remove_one(struct pci_dev *pdev)
301 {
302 struct net_device *dev = pci_get_drvdata(pdev);
303 struct tlan_priv *priv = netdev_priv(dev);
304
305 unregister_netdev(dev);
306
307 if (priv->dma_storage) {
308 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
309 priv->dma_storage, priv->dma_storage_dma);
310 }
311
312 #ifdef CONFIG_PCI
313 pci_release_regions(pdev);
314 #endif
315
316 free_netdev(dev);
317
318 cancel_work_sync(&priv->tlan_tqueue);
319 }
320
tlan_start(struct net_device * dev)321 static void tlan_start(struct net_device *dev)
322 {
323 tlan_reset_lists(dev);
324 /* NOTE: It might not be necessary to read the stats before a
325 reset if you don't care what the values are.
326 */
327 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
328 tlan_reset_adapter(dev);
329 netif_wake_queue(dev);
330 }
331
tlan_stop(struct net_device * dev)332 static void tlan_stop(struct net_device *dev)
333 {
334 struct tlan_priv *priv = netdev_priv(dev);
335
336 del_timer_sync(&priv->media_timer);
337 tlan_read_and_clear_stats(dev, TLAN_RECORD);
338 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
339 /* Reset and power down phy */
340 tlan_reset_adapter(dev);
341 if (priv->timer.function != NULL) {
342 del_timer_sync(&priv->timer);
343 priv->timer.function = NULL;
344 }
345 }
346
tlan_suspend(struct device * dev_d)347 static int __maybe_unused tlan_suspend(struct device *dev_d)
348 {
349 struct net_device *dev = dev_get_drvdata(dev_d);
350
351 if (netif_running(dev))
352 tlan_stop(dev);
353
354 netif_device_detach(dev);
355
356 return 0;
357 }
358
tlan_resume(struct device * dev_d)359 static int __maybe_unused tlan_resume(struct device *dev_d)
360 {
361 struct net_device *dev = dev_get_drvdata(dev_d);
362 netif_device_attach(dev);
363
364 if (netif_running(dev))
365 tlan_start(dev);
366
367 return 0;
368 }
369
370 static SIMPLE_DEV_PM_OPS(tlan_pm_ops, tlan_suspend, tlan_resume);
371
372 static struct pci_driver tlan_driver = {
373 .name = "tlan",
374 .id_table = tlan_pci_tbl,
375 .probe = tlan_init_one,
376 .remove = tlan_remove_one,
377 .driver.pm = &tlan_pm_ops,
378 };
379
tlan_probe(void)380 static int __init tlan_probe(void)
381 {
382 int rc = -ENODEV;
383
384 pr_info("%s", tlan_banner);
385
386 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
387
388 /* Use new style PCI probing. Now the kernel will
389 do most of this for us */
390 rc = pci_register_driver(&tlan_driver);
391
392 if (rc != 0) {
393 pr_err("Could not register pci driver\n");
394 goto err_out_pci_free;
395 }
396
397 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
398 tlan_eisa_probe();
399
400 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
401 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
402 tlan_have_pci, tlan_have_eisa);
403
404 if (tlan_devices_installed == 0) {
405 rc = -ENODEV;
406 goto err_out_pci_unreg;
407 }
408 return 0;
409
410 err_out_pci_unreg:
411 pci_unregister_driver(&tlan_driver);
412 err_out_pci_free:
413 return rc;
414 }
415
416
tlan_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)417 static int tlan_init_one(struct pci_dev *pdev,
418 const struct pci_device_id *ent)
419 {
420 return tlan_probe1(pdev, -1, -1, 0, ent);
421 }
422
423
424 /*
425 ***************************************************************
426 * tlan_probe1
427 *
428 * Returns:
429 * 0 on success, error code on error
430 * Parms:
431 * none
432 *
433 * The name is lower case to fit in with all the rest of
434 * the netcard_probe names. This function looks for
435 * another TLan based adapter, setting it up with the
436 * allocated device struct if one is found.
437 * tlan_probe has been ported to the new net API and
438 * now allocates its own device structure. This function
439 * is also used by modules.
440 *
441 **************************************************************/
442
tlan_probe1(struct pci_dev * pdev,long ioaddr,int irq,int rev,const struct pci_device_id * ent)443 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
444 const struct pci_device_id *ent)
445 {
446
447 struct net_device *dev;
448 struct tlan_priv *priv;
449 u16 device_id;
450 int reg, rc = -ENODEV;
451
452 #ifdef CONFIG_PCI
453 if (pdev) {
454 rc = pci_enable_device(pdev);
455 if (rc)
456 return rc;
457
458 rc = pci_request_regions(pdev, tlan_signature);
459 if (rc) {
460 pr_err("Could not reserve IO regions\n");
461 goto err_out;
462 }
463 }
464 #endif /* CONFIG_PCI */
465
466 dev = alloc_etherdev(sizeof(struct tlan_priv));
467 if (dev == NULL) {
468 rc = -ENOMEM;
469 goto err_out_regions;
470 }
471 SET_NETDEV_DEV(dev, &pdev->dev);
472
473 priv = netdev_priv(dev);
474
475 priv->pci_dev = pdev;
476 priv->dev = dev;
477
478 /* Is this a PCI device? */
479 if (pdev) {
480 u32 pci_io_base = 0;
481
482 priv->adapter = &board_info[ent->driver_data];
483
484 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
485 if (rc) {
486 pr_err("No suitable PCI mapping available\n");
487 goto err_out_free_dev;
488 }
489
490 for (reg = 0; reg <= 5; reg++) {
491 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
492 pci_io_base = pci_resource_start(pdev, reg);
493 TLAN_DBG(TLAN_DEBUG_GNRL,
494 "IO mapping is available at %x.\n",
495 pci_io_base);
496 break;
497 }
498 }
499 if (!pci_io_base) {
500 pr_err("No IO mappings available\n");
501 rc = -EIO;
502 goto err_out_free_dev;
503 }
504
505 dev->base_addr = pci_io_base;
506 dev->irq = pdev->irq;
507 priv->adapter_rev = pdev->revision;
508 pci_set_master(pdev);
509 pci_set_drvdata(pdev, dev);
510
511 } else { /* EISA card */
512 /* This is a hack. We need to know which board structure
513 * is suited for this adapter */
514 device_id = inw(ioaddr + EISA_ID2);
515 if (device_id == 0x20F1) {
516 priv->adapter = &board_info[13]; /* NetFlex-3/E */
517 priv->adapter_rev = 23; /* TLAN 2.3 */
518 } else {
519 priv->adapter = &board_info[14];
520 priv->adapter_rev = 10; /* TLAN 1.0 */
521 }
522 dev->base_addr = ioaddr;
523 dev->irq = irq;
524 }
525
526 /* Kernel parameters */
527 if (dev->mem_start) {
528 priv->aui = dev->mem_start & 0x01;
529 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
530 : (dev->mem_start & 0x06) >> 1;
531 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
532 : (dev->mem_start & 0x18) >> 3;
533
534 if (priv->speed == 0x1)
535 priv->speed = TLAN_SPEED_10;
536 else if (priv->speed == 0x2)
537 priv->speed = TLAN_SPEED_100;
538
539 debug = priv->debug = dev->mem_end;
540 } else {
541 priv->aui = aui[boards_found];
542 priv->speed = speed[boards_found];
543 priv->duplex = duplex[boards_found];
544 priv->debug = debug;
545 }
546
547 /* This will be used when we get an adapter error from
548 * within our irq handler */
549 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
550
551 spin_lock_init(&priv->lock);
552
553 rc = tlan_init(dev);
554 if (rc) {
555 pr_err("Could not set up device\n");
556 goto err_out_free_dev;
557 }
558
559 rc = register_netdev(dev);
560 if (rc) {
561 pr_err("Could not register device\n");
562 goto err_out_uninit;
563 }
564
565
566 tlan_devices_installed++;
567 boards_found++;
568
569 /* pdev is NULL if this is an EISA device */
570 if (pdev)
571 tlan_have_pci++;
572 else {
573 priv->next_device = tlan_eisa_devices;
574 tlan_eisa_devices = dev;
575 tlan_have_eisa++;
576 }
577
578 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
579 (int)dev->irq,
580 (int)dev->base_addr,
581 priv->adapter->device_label,
582 priv->adapter_rev);
583 return 0;
584
585 err_out_uninit:
586 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
587 priv->dma_storage, priv->dma_storage_dma);
588 err_out_free_dev:
589 free_netdev(dev);
590 err_out_regions:
591 #ifdef CONFIG_PCI
592 if (pdev)
593 pci_release_regions(pdev);
594 err_out:
595 #endif
596 if (pdev)
597 pci_disable_device(pdev);
598 return rc;
599 }
600
601
tlan_eisa_cleanup(void)602 static void tlan_eisa_cleanup(void)
603 {
604 struct net_device *dev;
605 struct tlan_priv *priv;
606
607 while (tlan_have_eisa) {
608 dev = tlan_eisa_devices;
609 priv = netdev_priv(dev);
610 if (priv->dma_storage) {
611 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
612 priv->dma_storage,
613 priv->dma_storage_dma);
614 }
615 release_region(dev->base_addr, 0x10);
616 unregister_netdev(dev);
617 tlan_eisa_devices = priv->next_device;
618 free_netdev(dev);
619 tlan_have_eisa--;
620 }
621 }
622
623
tlan_exit(void)624 static void __exit tlan_exit(void)
625 {
626 pci_unregister_driver(&tlan_driver);
627
628 if (tlan_have_eisa)
629 tlan_eisa_cleanup();
630
631 }
632
633
634 /* Module loading/unloading */
635 module_init(tlan_probe);
636 module_exit(tlan_exit);
637
638
639
640 /**************************************************************
641 * tlan_eisa_probe
642 *
643 * Returns: 0 on success, 1 otherwise
644 *
645 * Parms: None
646 *
647 *
648 * This functions probes for EISA devices and calls
649 * TLan_probe1 when one is found.
650 *
651 *************************************************************/
652
tlan_eisa_probe(void)653 static void __init tlan_eisa_probe(void)
654 {
655 long ioaddr;
656 int irq;
657 u16 device_id;
658
659 if (!EISA_bus) {
660 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
661 return;
662 }
663
664 /* Loop through all slots of the EISA bus */
665 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
666
667 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
668 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
669 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
670 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
671
672
673 TLAN_DBG(TLAN_DEBUG_PROBE,
674 "Probing for EISA adapter at IO: 0x%4x : ",
675 (int) ioaddr);
676 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
677 goto out;
678
679 if (inw(ioaddr + EISA_ID) != 0x110E) {
680 release_region(ioaddr, 0x10);
681 goto out;
682 }
683
684 device_id = inw(ioaddr + EISA_ID2);
685 if (device_id != 0x20F1 && device_id != 0x40F1) {
686 release_region(ioaddr, 0x10);
687 goto out;
688 }
689
690 /* check if adapter is enabled */
691 if (inb(ioaddr + EISA_CR) != 0x1) {
692 release_region(ioaddr, 0x10);
693 goto out2;
694 }
695
696 if (debug == 0x10)
697 pr_info("Found one\n");
698
699
700 /* Get irq from board */
701 switch (inb(ioaddr + 0xcc0)) {
702 case(0x10):
703 irq = 5;
704 break;
705 case(0x20):
706 irq = 9;
707 break;
708 case(0x40):
709 irq = 10;
710 break;
711 case(0x80):
712 irq = 11;
713 break;
714 default:
715 goto out;
716 }
717
718
719 /* Setup the newly found eisa adapter */
720 tlan_probe1(NULL, ioaddr, irq, 12, NULL);
721 continue;
722
723 out:
724 if (debug == 0x10)
725 pr_info("None found\n");
726 continue;
727
728 out2:
729 if (debug == 0x10)
730 pr_info("Card found but it is not enabled, skipping\n");
731 continue;
732
733 }
734
735 }
736
737 #ifdef CONFIG_NET_POLL_CONTROLLER
tlan_poll(struct net_device * dev)738 static void tlan_poll(struct net_device *dev)
739 {
740 disable_irq(dev->irq);
741 tlan_handle_interrupt(dev->irq, dev);
742 enable_irq(dev->irq);
743 }
744 #endif
745
746 static const struct net_device_ops tlan_netdev_ops = {
747 .ndo_open = tlan_open,
748 .ndo_stop = tlan_close,
749 .ndo_start_xmit = tlan_start_tx,
750 .ndo_tx_timeout = tlan_tx_timeout,
751 .ndo_get_stats = tlan_get_stats,
752 .ndo_set_rx_mode = tlan_set_multicast_list,
753 .ndo_do_ioctl = tlan_ioctl,
754 .ndo_set_mac_address = eth_mac_addr,
755 .ndo_validate_addr = eth_validate_addr,
756 #ifdef CONFIG_NET_POLL_CONTROLLER
757 .ndo_poll_controller = tlan_poll,
758 #endif
759 };
760
tlan_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)761 static void tlan_get_drvinfo(struct net_device *dev,
762 struct ethtool_drvinfo *info)
763 {
764 struct tlan_priv *priv = netdev_priv(dev);
765
766 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
767 if (priv->pci_dev)
768 strlcpy(info->bus_info, pci_name(priv->pci_dev),
769 sizeof(info->bus_info));
770 else
771 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
772 }
773
tlan_get_eeprom_len(struct net_device * dev)774 static int tlan_get_eeprom_len(struct net_device *dev)
775 {
776 return TLAN_EEPROM_SIZE;
777 }
778
tlan_get_eeprom(struct net_device * dev,struct ethtool_eeprom * eeprom,u8 * data)779 static int tlan_get_eeprom(struct net_device *dev,
780 struct ethtool_eeprom *eeprom, u8 *data)
781 {
782 int i;
783
784 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
785 if (tlan_ee_read_byte(dev, i, &data[i]))
786 return -EIO;
787
788 return 0;
789 }
790
791 static const struct ethtool_ops tlan_ethtool_ops = {
792 .get_drvinfo = tlan_get_drvinfo,
793 .get_link = ethtool_op_get_link,
794 .get_eeprom_len = tlan_get_eeprom_len,
795 .get_eeprom = tlan_get_eeprom,
796 };
797
798 /***************************************************************
799 * tlan_init
800 *
801 * Returns:
802 * 0 on success, error code otherwise.
803 * Parms:
804 * dev The structure of the device to be
805 * init'ed.
806 *
807 * This function completes the initialization of the
808 * device structure and driver. It reserves the IO
809 * addresses, allocates memory for the lists and bounce
810 * buffers, retrieves the MAC address from the eeprom
811 * and assignes the device's methods.
812 *
813 **************************************************************/
814
tlan_init(struct net_device * dev)815 static int tlan_init(struct net_device *dev)
816 {
817 int dma_size;
818 int err;
819 int i;
820 struct tlan_priv *priv;
821
822 priv = netdev_priv(dev);
823
824 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
825 * (sizeof(struct tlan_list));
826 priv->dma_storage = dma_alloc_coherent(&priv->pci_dev->dev, dma_size,
827 &priv->dma_storage_dma, GFP_KERNEL);
828 priv->dma_size = dma_size;
829
830 if (priv->dma_storage == NULL) {
831 pr_err("Could not allocate lists and buffers for %s\n",
832 dev->name);
833 return -ENOMEM;
834 }
835 priv->rx_list = (struct tlan_list *)
836 ALIGN((unsigned long)priv->dma_storage, 8);
837 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
838 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
839 priv->tx_list_dma =
840 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
841
842 err = 0;
843 for (i = 0; i < ETH_ALEN; i++)
844 err |= tlan_ee_read_byte(dev,
845 (u8) priv->adapter->addr_ofs + i,
846 (u8 *) &dev->dev_addr[i]);
847 if (err) {
848 pr_err("%s: Error reading MAC from eeprom: %d\n",
849 dev->name, err);
850 }
851 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
852 if (priv->adapter->addr_ofs == 0xf8) {
853 for (i = 0; i < ETH_ALEN; i += 2) {
854 char tmp = dev->dev_addr[i];
855 dev->dev_addr[i] = dev->dev_addr[i + 1];
856 dev->dev_addr[i + 1] = tmp;
857 }
858 }
859
860 netif_carrier_off(dev);
861
862 /* Device methods */
863 dev->netdev_ops = &tlan_netdev_ops;
864 dev->ethtool_ops = &tlan_ethtool_ops;
865 dev->watchdog_timeo = TX_TIMEOUT;
866
867 return 0;
868
869 }
870
871
872
873
874 /***************************************************************
875 * tlan_open
876 *
877 * Returns:
878 * 0 on success, error code otherwise.
879 * Parms:
880 * dev Structure of device to be opened.
881 *
882 * This routine puts the driver and TLAN adapter in a
883 * state where it is ready to send and receive packets.
884 * It allocates the IRQ, resets and brings the adapter
885 * out of reset, and allows interrupts. It also delays
886 * the startup for autonegotiation or sends a Rx GO
887 * command to the adapter, as appropriate.
888 *
889 **************************************************************/
890
tlan_open(struct net_device * dev)891 static int tlan_open(struct net_device *dev)
892 {
893 struct tlan_priv *priv = netdev_priv(dev);
894 int err;
895
896 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
897 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
898 dev->name, dev);
899
900 if (err) {
901 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
902 dev->irq);
903 return err;
904 }
905
906 timer_setup(&priv->timer, NULL, 0);
907 timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
908
909 tlan_start(dev);
910
911 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
912 dev->name, priv->tlan_rev);
913
914 return 0;
915
916 }
917
918
919
920 /**************************************************************
921 * tlan_ioctl
922 *
923 * Returns:
924 * 0 on success, error code otherwise
925 * Params:
926 * dev structure of device to receive ioctl.
927 *
928 * rq ifreq structure to hold userspace data.
929 *
930 * cmd ioctl command.
931 *
932 *
933 *************************************************************/
934
tlan_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)935 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
936 {
937 struct tlan_priv *priv = netdev_priv(dev);
938 struct mii_ioctl_data *data = if_mii(rq);
939 u32 phy = priv->phy[priv->phy_num];
940
941 if (!priv->phy_online)
942 return -EAGAIN;
943
944 switch (cmd) {
945 case SIOCGMIIPHY: /* get address of MII PHY in use. */
946 data->phy_id = phy;
947 fallthrough;
948
949
950 case SIOCGMIIREG: /* read MII PHY register. */
951 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
952 data->reg_num & 0x1f, &data->val_out);
953 return 0;
954
955
956 case SIOCSMIIREG: /* write MII PHY register. */
957 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
958 data->reg_num & 0x1f, data->val_in);
959 return 0;
960 default:
961 return -EOPNOTSUPP;
962 }
963 }
964
965
966 /***************************************************************
967 * tlan_tx_timeout
968 *
969 * Returns: nothing
970 *
971 * Params:
972 * dev structure of device which timed out
973 * during transmit.
974 *
975 **************************************************************/
976
tlan_tx_timeout(struct net_device * dev,unsigned int txqueue)977 static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue)
978 {
979
980 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
981
982 /* Ok so we timed out, lets see what we can do about it...*/
983 tlan_free_lists(dev);
984 tlan_reset_lists(dev);
985 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
986 tlan_reset_adapter(dev);
987 netif_trans_update(dev); /* prevent tx timeout */
988 netif_wake_queue(dev);
989
990 }
991
992
993 /***************************************************************
994 * tlan_tx_timeout_work
995 *
996 * Returns: nothing
997 *
998 * Params:
999 * work work item of device which timed out
1000 *
1001 **************************************************************/
1002
tlan_tx_timeout_work(struct work_struct * work)1003 static void tlan_tx_timeout_work(struct work_struct *work)
1004 {
1005 struct tlan_priv *priv =
1006 container_of(work, struct tlan_priv, tlan_tqueue);
1007
1008 tlan_tx_timeout(priv->dev, UINT_MAX);
1009 }
1010
1011
1012
1013 /***************************************************************
1014 * tlan_start_tx
1015 *
1016 * Returns:
1017 * 0 on success, non-zero on failure.
1018 * Parms:
1019 * skb A pointer to the sk_buff containing the
1020 * frame to be sent.
1021 * dev The device to send the data on.
1022 *
1023 * This function adds a frame to the Tx list to be sent
1024 * ASAP. First it verifies that the adapter is ready and
1025 * there is room in the queue. Then it sets up the next
1026 * available list, copies the frame to the corresponding
1027 * buffer. If the adapter Tx channel is idle, it gives
1028 * the adapter a Tx Go command on the list, otherwise it
1029 * sets the forward address of the previous list to point
1030 * to this one. Then it frees the sk_buff.
1031 *
1032 **************************************************************/
1033
tlan_start_tx(struct sk_buff * skb,struct net_device * dev)1034 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1035 {
1036 struct tlan_priv *priv = netdev_priv(dev);
1037 dma_addr_t tail_list_phys;
1038 struct tlan_list *tail_list;
1039 unsigned long flags;
1040 unsigned int txlen;
1041
1042 if (!priv->phy_online) {
1043 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1044 dev->name);
1045 dev_kfree_skb_any(skb);
1046 return NETDEV_TX_OK;
1047 }
1048
1049 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1050 return NETDEV_TX_OK;
1051 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1052
1053 tail_list = priv->tx_list + priv->tx_tail;
1054 tail_list_phys =
1055 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1056
1057 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1058 TLAN_DBG(TLAN_DEBUG_TX,
1059 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1060 dev->name, priv->tx_head, priv->tx_tail);
1061 netif_stop_queue(dev);
1062 priv->tx_busy_count++;
1063 return NETDEV_TX_BUSY;
1064 }
1065
1066 tail_list->forward = 0;
1067
1068 tail_list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1069 skb->data, txlen,
1070 DMA_TO_DEVICE);
1071 tlan_store_skb(tail_list, skb);
1072
1073 tail_list->frame_size = (u16) txlen;
1074 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1075 tail_list->buffer[1].count = 0;
1076 tail_list->buffer[1].address = 0;
1077
1078 spin_lock_irqsave(&priv->lock, flags);
1079 tail_list->c_stat = TLAN_CSTAT_READY;
1080 if (!priv->tx_in_progress) {
1081 priv->tx_in_progress = 1;
1082 TLAN_DBG(TLAN_DEBUG_TX,
1083 "TRANSMIT: Starting TX on buffer %d\n",
1084 priv->tx_tail);
1085 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1086 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1087 } else {
1088 TLAN_DBG(TLAN_DEBUG_TX,
1089 "TRANSMIT: Adding buffer %d to TX channel\n",
1090 priv->tx_tail);
1091 if (priv->tx_tail == 0) {
1092 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1093 = tail_list_phys;
1094 } else {
1095 (priv->tx_list + (priv->tx_tail - 1))->forward
1096 = tail_list_phys;
1097 }
1098 }
1099 spin_unlock_irqrestore(&priv->lock, flags);
1100
1101 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1102
1103 return NETDEV_TX_OK;
1104
1105 }
1106
1107
1108
1109
1110 /***************************************************************
1111 * tlan_handle_interrupt
1112 *
1113 * Returns:
1114 * Nothing
1115 * Parms:
1116 * irq The line on which the interrupt
1117 * occurred.
1118 * dev_id A pointer to the device assigned to
1119 * this irq line.
1120 *
1121 * This function handles an interrupt generated by its
1122 * assigned TLAN adapter. The function deactivates
1123 * interrupts on its adapter, records the type of
1124 * interrupt, executes the appropriate subhandler, and
1125 * acknowdges the interrupt to the adapter (thus
1126 * re-enabling adapter interrupts.
1127 *
1128 **************************************************************/
1129
tlan_handle_interrupt(int irq,void * dev_id)1130 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1131 {
1132 struct net_device *dev = dev_id;
1133 struct tlan_priv *priv = netdev_priv(dev);
1134 u16 host_int;
1135 u16 type;
1136
1137 spin_lock(&priv->lock);
1138
1139 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1140 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1141 if (type) {
1142 u32 ack;
1143 u32 host_cmd;
1144
1145 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1146 ack = tlan_int_vector[type](dev, host_int);
1147
1148 if (ack) {
1149 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1150 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1151 }
1152 }
1153
1154 spin_unlock(&priv->lock);
1155
1156 return IRQ_RETVAL(type);
1157 }
1158
1159
1160
1161
1162 /***************************************************************
1163 * tlan_close
1164 *
1165 * Returns:
1166 * An error code.
1167 * Parms:
1168 * dev The device structure of the device to
1169 * close.
1170 *
1171 * This function shuts down the adapter. It records any
1172 * stats, puts the adapter into reset state, deactivates
1173 * its time as needed, and frees the irq it is using.
1174 *
1175 **************************************************************/
1176
tlan_close(struct net_device * dev)1177 static int tlan_close(struct net_device *dev)
1178 {
1179 tlan_stop(dev);
1180
1181 free_irq(dev->irq, dev);
1182 tlan_free_lists(dev);
1183 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1184
1185 return 0;
1186
1187 }
1188
1189
1190
1191
1192 /***************************************************************
1193 * tlan_get_stats
1194 *
1195 * Returns:
1196 * A pointer to the device's statistics structure.
1197 * Parms:
1198 * dev The device structure to return the
1199 * stats for.
1200 *
1201 * This function updates the devices statistics by reading
1202 * the TLAN chip's onboard registers. Then it returns the
1203 * address of the statistics structure.
1204 *
1205 **************************************************************/
1206
tlan_get_stats(struct net_device * dev)1207 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1208 {
1209 struct tlan_priv *priv = netdev_priv(dev);
1210 int i;
1211
1212 /* Should only read stats if open ? */
1213 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1214
1215 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1216 priv->rx_eoc_count);
1217 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1218 priv->tx_busy_count);
1219 if (debug & TLAN_DEBUG_GNRL) {
1220 tlan_print_dio(dev->base_addr);
1221 tlan_phy_print(dev);
1222 }
1223 if (debug & TLAN_DEBUG_LIST) {
1224 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1225 tlan_print_list(priv->rx_list + i, "RX", i);
1226 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1227 tlan_print_list(priv->tx_list + i, "TX", i);
1228 }
1229
1230 return &dev->stats;
1231
1232 }
1233
1234
1235
1236
1237 /***************************************************************
1238 * tlan_set_multicast_list
1239 *
1240 * Returns:
1241 * Nothing
1242 * Parms:
1243 * dev The device structure to set the
1244 * multicast list for.
1245 *
1246 * This function sets the TLAN adaptor to various receive
1247 * modes. If the IFF_PROMISC flag is set, promiscuous
1248 * mode is acitviated. Otherwise, promiscuous mode is
1249 * turned off. If the IFF_ALLMULTI flag is set, then
1250 * the hash table is set to receive all group addresses.
1251 * Otherwise, the first three multicast addresses are
1252 * stored in AREG_1-3, and the rest are selected via the
1253 * hash table, as necessary.
1254 *
1255 **************************************************************/
1256
tlan_set_multicast_list(struct net_device * dev)1257 static void tlan_set_multicast_list(struct net_device *dev)
1258 {
1259 struct netdev_hw_addr *ha;
1260 u32 hash1 = 0;
1261 u32 hash2 = 0;
1262 int i;
1263 u32 offset;
1264 u8 tmp;
1265
1266 if (dev->flags & IFF_PROMISC) {
1267 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1268 tlan_dio_write8(dev->base_addr,
1269 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1270 } else {
1271 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1272 tlan_dio_write8(dev->base_addr,
1273 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1274 if (dev->flags & IFF_ALLMULTI) {
1275 for (i = 0; i < 3; i++)
1276 tlan_set_mac(dev, i + 1, NULL);
1277 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1278 0xffffffff);
1279 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1280 0xffffffff);
1281 } else {
1282 i = 0;
1283 netdev_for_each_mc_addr(ha, dev) {
1284 if (i < 3) {
1285 tlan_set_mac(dev, i + 1,
1286 (char *) &ha->addr);
1287 } else {
1288 offset =
1289 tlan_hash_func((u8 *)&ha->addr);
1290 if (offset < 32)
1291 hash1 |= (1 << offset);
1292 else
1293 hash2 |= (1 << (offset - 32));
1294 }
1295 i++;
1296 }
1297 for ( ; i < 3; i++)
1298 tlan_set_mac(dev, i + 1, NULL);
1299 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1301 }
1302 }
1303
1304 }
1305
1306
1307
1308 /*****************************************************************************
1309 ******************************************************************************
1310
1311 ThunderLAN driver interrupt vectors and table
1312
1313 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1314 Programmer's Guide" for more informations on handling interrupts
1315 generated by TLAN based adapters.
1316
1317 ******************************************************************************
1318 *****************************************************************************/
1319
1320
1321
1322
1323 /***************************************************************
1324 * tlan_handle_tx_eof
1325 *
1326 * Returns:
1327 * 1
1328 * Parms:
1329 * dev Device assigned the IRQ that was
1330 * raised.
1331 * host_int The contents of the HOST_INT
1332 * port.
1333 *
1334 * This function handles Tx EOF interrupts which are raised
1335 * by the adapter when it has completed sending the
1336 * contents of a buffer. If detemines which list/buffer
1337 * was completed and resets it. If the buffer was the last
1338 * in the channel (EOC), then the function checks to see if
1339 * another buffer is ready to send, and if so, sends a Tx
1340 * Go command. Finally, the driver activates/continues the
1341 * activity LED.
1342 *
1343 **************************************************************/
1344
tlan_handle_tx_eof(struct net_device * dev,u16 host_int)1345 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1346 {
1347 struct tlan_priv *priv = netdev_priv(dev);
1348 int eoc = 0;
1349 struct tlan_list *head_list;
1350 dma_addr_t head_list_phys;
1351 u32 ack = 0;
1352 u16 tmp_c_stat;
1353
1354 TLAN_DBG(TLAN_DEBUG_TX,
1355 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1356 priv->tx_head, priv->tx_tail);
1357 head_list = priv->tx_list + priv->tx_head;
1358
1359 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1360 && (ack < 255)) {
1361 struct sk_buff *skb = tlan_get_skb(head_list);
1362
1363 ack++;
1364 dma_unmap_single(&priv->pci_dev->dev,
1365 head_list->buffer[0].address,
1366 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1367 DMA_TO_DEVICE);
1368 dev_kfree_skb_any(skb);
1369 head_list->buffer[8].address = 0;
1370 head_list->buffer[9].address = 0;
1371
1372 if (tmp_c_stat & TLAN_CSTAT_EOC)
1373 eoc = 1;
1374
1375 dev->stats.tx_bytes += head_list->frame_size;
1376
1377 head_list->c_stat = TLAN_CSTAT_UNUSED;
1378 netif_start_queue(dev);
1379 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1380 head_list = priv->tx_list + priv->tx_head;
1381 }
1382
1383 if (!ack)
1384 netdev_info(dev,
1385 "Received interrupt for uncompleted TX frame\n");
1386
1387 if (eoc) {
1388 TLAN_DBG(TLAN_DEBUG_TX,
1389 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1390 priv->tx_head, priv->tx_tail);
1391 head_list = priv->tx_list + priv->tx_head;
1392 head_list_phys = priv->tx_list_dma
1393 + sizeof(struct tlan_list)*priv->tx_head;
1394 if ((head_list->c_stat & TLAN_CSTAT_READY)
1395 == TLAN_CSTAT_READY) {
1396 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1397 ack |= TLAN_HC_GO;
1398 } else {
1399 priv->tx_in_progress = 0;
1400 }
1401 }
1402
1403 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1404 tlan_dio_write8(dev->base_addr,
1405 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1406 if (priv->timer.function == NULL) {
1407 priv->timer.function = tlan_timer;
1408 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1409 priv->timer_set_at = jiffies;
1410 priv->timer_type = TLAN_TIMER_ACTIVITY;
1411 add_timer(&priv->timer);
1412 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1413 priv->timer_set_at = jiffies;
1414 }
1415 }
1416
1417 return ack;
1418
1419 }
1420
1421
1422
1423
1424 /***************************************************************
1425 * TLan_HandleStatOverflow
1426 *
1427 * Returns:
1428 * 1
1429 * Parms:
1430 * dev Device assigned the IRQ that was
1431 * raised.
1432 * host_int The contents of the HOST_INT
1433 * port.
1434 *
1435 * This function handles the Statistics Overflow interrupt
1436 * which means that one or more of the TLAN statistics
1437 * registers has reached 1/2 capacity and needs to be read.
1438 *
1439 **************************************************************/
1440
tlan_handle_stat_overflow(struct net_device * dev,u16 host_int)1441 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1442 {
1443 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1444
1445 return 1;
1446
1447 }
1448
1449
1450
1451
1452 /***************************************************************
1453 * TLan_HandleRxEOF
1454 *
1455 * Returns:
1456 * 1
1457 * Parms:
1458 * dev Device assigned the IRQ that was
1459 * raised.
1460 * host_int The contents of the HOST_INT
1461 * port.
1462 *
1463 * This function handles the Rx EOF interrupt which
1464 * indicates a frame has been received by the adapter from
1465 * the net and the frame has been transferred to memory.
1466 * The function determines the bounce buffer the frame has
1467 * been loaded into, creates a new sk_buff big enough to
1468 * hold the frame, and sends it to protocol stack. It
1469 * then resets the used buffer and appends it to the end
1470 * of the list. If the frame was the last in the Rx
1471 * channel (EOC), the function restarts the receive channel
1472 * by sending an Rx Go command to the adapter. Then it
1473 * activates/continues the activity LED.
1474 *
1475 **************************************************************/
1476
tlan_handle_rx_eof(struct net_device * dev,u16 host_int)1477 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1478 {
1479 struct tlan_priv *priv = netdev_priv(dev);
1480 u32 ack = 0;
1481 int eoc = 0;
1482 struct tlan_list *head_list;
1483 struct sk_buff *skb;
1484 struct tlan_list *tail_list;
1485 u16 tmp_c_stat;
1486 dma_addr_t head_list_phys;
1487
1488 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1489 priv->rx_head, priv->rx_tail);
1490 head_list = priv->rx_list + priv->rx_head;
1491 head_list_phys =
1492 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1493
1494 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1495 && (ack < 255)) {
1496 dma_addr_t frame_dma = head_list->buffer[0].address;
1497 u32 frame_size = head_list->frame_size;
1498 struct sk_buff *new_skb;
1499
1500 ack++;
1501 if (tmp_c_stat & TLAN_CSTAT_EOC)
1502 eoc = 1;
1503
1504 new_skb = netdev_alloc_skb_ip_align(dev,
1505 TLAN_MAX_FRAME_SIZE + 5);
1506 if (!new_skb)
1507 goto drop_and_reuse;
1508
1509 skb = tlan_get_skb(head_list);
1510 dma_unmap_single(&priv->pci_dev->dev, frame_dma,
1511 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1512 skb_put(skb, frame_size);
1513
1514 dev->stats.rx_bytes += frame_size;
1515
1516 skb->protocol = eth_type_trans(skb, dev);
1517 netif_rx(skb);
1518
1519 head_list->buffer[0].address =
1520 dma_map_single(&priv->pci_dev->dev, new_skb->data,
1521 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1522
1523 tlan_store_skb(head_list, new_skb);
1524 drop_and_reuse:
1525 head_list->forward = 0;
1526 head_list->c_stat = 0;
1527 tail_list = priv->rx_list + priv->rx_tail;
1528 tail_list->forward = head_list_phys;
1529
1530 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1531 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
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 }
1536
1537 if (!ack)
1538 netdev_info(dev,
1539 "Received interrupt for uncompleted RX frame\n");
1540
1541
1542 if (eoc) {
1543 TLAN_DBG(TLAN_DEBUG_RX,
1544 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1545 priv->rx_head, priv->rx_tail);
1546 head_list = priv->rx_list + priv->rx_head;
1547 head_list_phys = priv->rx_list_dma
1548 + sizeof(struct tlan_list)*priv->rx_head;
1549 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1550 ack |= TLAN_HC_GO | TLAN_HC_RT;
1551 priv->rx_eoc_count++;
1552 }
1553
1554 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1555 tlan_dio_write8(dev->base_addr,
1556 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1557 if (priv->timer.function == NULL) {
1558 priv->timer.function = tlan_timer;
1559 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1560 priv->timer_set_at = jiffies;
1561 priv->timer_type = TLAN_TIMER_ACTIVITY;
1562 add_timer(&priv->timer);
1563 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1564 priv->timer_set_at = jiffies;
1565 }
1566 }
1567
1568 return ack;
1569
1570 }
1571
1572
1573
1574
1575 /***************************************************************
1576 * tlan_handle_dummy
1577 *
1578 * Returns:
1579 * 1
1580 * Parms:
1581 * dev Device assigned the IRQ that was
1582 * raised.
1583 * host_int The contents of the HOST_INT
1584 * port.
1585 *
1586 * This function handles the Dummy interrupt, which is
1587 * raised whenever a test interrupt is generated by setting
1588 * the Req_Int bit of HOST_CMD to 1.
1589 *
1590 **************************************************************/
1591
tlan_handle_dummy(struct net_device * dev,u16 host_int)1592 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1593 {
1594 netdev_info(dev, "Test interrupt\n");
1595 return 1;
1596
1597 }
1598
1599
1600
1601
1602 /***************************************************************
1603 * tlan_handle_tx_eoc
1604 *
1605 * Returns:
1606 * 1
1607 * Parms:
1608 * dev Device assigned the IRQ that was
1609 * raised.
1610 * host_int The contents of the HOST_INT
1611 * port.
1612 *
1613 * This driver is structured to determine EOC occurrences by
1614 * reading the CSTAT member of the list structure. Tx EOC
1615 * interrupts are disabled via the DIO INTDIS register.
1616 * However, TLAN chips before revision 3.0 didn't have this
1617 * functionality, so process EOC events if this is the
1618 * case.
1619 *
1620 **************************************************************/
1621
tlan_handle_tx_eoc(struct net_device * dev,u16 host_int)1622 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1623 {
1624 struct tlan_priv *priv = netdev_priv(dev);
1625 struct tlan_list *head_list;
1626 dma_addr_t head_list_phys;
1627 u32 ack = 1;
1628
1629 if (priv->tlan_rev < 0x30) {
1630 TLAN_DBG(TLAN_DEBUG_TX,
1631 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1632 priv->tx_head, priv->tx_tail);
1633 head_list = priv->tx_list + priv->tx_head;
1634 head_list_phys = priv->tx_list_dma
1635 + sizeof(struct tlan_list)*priv->tx_head;
1636 if ((head_list->c_stat & TLAN_CSTAT_READY)
1637 == TLAN_CSTAT_READY) {
1638 netif_stop_queue(dev);
1639 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1640 ack |= TLAN_HC_GO;
1641 } else {
1642 priv->tx_in_progress = 0;
1643 }
1644 }
1645
1646 return ack;
1647
1648 }
1649
1650
1651
1652
1653 /***************************************************************
1654 * tlan_handle_status_check
1655 *
1656 * Returns:
1657 * 0 if Adapter check, 1 if Network Status check.
1658 * Parms:
1659 * dev Device assigned the IRQ that was
1660 * raised.
1661 * host_int The contents of the HOST_INT
1662 * port.
1663 *
1664 * This function handles Adapter Check/Network Status
1665 * interrupts generated by the adapter. It checks the
1666 * vector in the HOST_INT register to determine if it is
1667 * an Adapter Check interrupt. If so, it resets the
1668 * adapter. Otherwise it clears the status registers
1669 * and services the PHY.
1670 *
1671 **************************************************************/
1672
tlan_handle_status_check(struct net_device * dev,u16 host_int)1673 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1674 {
1675 struct tlan_priv *priv = netdev_priv(dev);
1676 u32 ack;
1677 u32 error;
1678 u8 net_sts;
1679 u32 phy;
1680 u16 tlphy_ctl;
1681 u16 tlphy_sts;
1682
1683 ack = 1;
1684 if (host_int & TLAN_HI_IV_MASK) {
1685 netif_stop_queue(dev);
1686 error = inl(dev->base_addr + TLAN_CH_PARM);
1687 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1688 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1689 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1690
1691 schedule_work(&priv->tlan_tqueue);
1692
1693 netif_wake_queue(dev);
1694 ack = 0;
1695 } else {
1696 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1697 phy = priv->phy[priv->phy_num];
1698
1699 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1700 if (net_sts) {
1701 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1702 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1703 dev->name, (unsigned) net_sts);
1704 }
1705 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1706 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1707 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1708 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1709 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1710 tlphy_ctl |= TLAN_TC_SWAPOL;
1711 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1712 tlphy_ctl);
1713 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1714 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1715 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1716 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1717 tlphy_ctl);
1718 }
1719
1720 if (debug)
1721 tlan_phy_print(dev);
1722 }
1723 }
1724
1725 return ack;
1726
1727 }
1728
1729
1730
1731
1732 /***************************************************************
1733 * tlan_handle_rx_eoc
1734 *
1735 * Returns:
1736 * 1
1737 * Parms:
1738 * dev Device assigned the IRQ that was
1739 * raised.
1740 * host_int The contents of the HOST_INT
1741 * port.
1742 *
1743 * This driver is structured to determine EOC occurrences by
1744 * reading the CSTAT member of the list structure. Rx EOC
1745 * interrupts are disabled via the DIO INTDIS register.
1746 * However, TLAN chips before revision 3.0 didn't have this
1747 * CSTAT member or a INTDIS register, so if this chip is
1748 * pre-3.0, process EOC interrupts normally.
1749 *
1750 **************************************************************/
1751
tlan_handle_rx_eoc(struct net_device * dev,u16 host_int)1752 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1753 {
1754 struct tlan_priv *priv = netdev_priv(dev);
1755 dma_addr_t head_list_phys;
1756 u32 ack = 1;
1757
1758 if (priv->tlan_rev < 0x30) {
1759 TLAN_DBG(TLAN_DEBUG_RX,
1760 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1761 priv->rx_head, priv->rx_tail);
1762 head_list_phys = priv->rx_list_dma
1763 + sizeof(struct tlan_list)*priv->rx_head;
1764 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1765 ack |= TLAN_HC_GO | TLAN_HC_RT;
1766 priv->rx_eoc_count++;
1767 }
1768
1769 return ack;
1770
1771 }
1772
1773
1774
1775
1776 /*****************************************************************************
1777 ******************************************************************************
1778
1779 ThunderLAN driver timer function
1780
1781 ******************************************************************************
1782 *****************************************************************************/
1783
1784
1785 /***************************************************************
1786 * tlan_timer
1787 *
1788 * Returns:
1789 * Nothing
1790 * Parms:
1791 * data A value given to add timer when
1792 * add_timer was called.
1793 *
1794 * This function handles timed functionality for the
1795 * TLAN driver. The two current timer uses are for
1796 * delaying for autonegotionation and driving the ACT LED.
1797 * - Autonegotiation requires being allowed about
1798 * 2 1/2 seconds before attempting to transmit a
1799 * packet. It would be a very bad thing to hang
1800 * the kernel this long, so the driver doesn't
1801 * allow transmission 'til after this time, for
1802 * certain PHYs. It would be much nicer if all
1803 * PHYs were interrupt-capable like the internal
1804 * PHY.
1805 * - The ACT LED, which shows adapter activity, is
1806 * driven by the driver, and so must be left on
1807 * for a short period to power up the LED so it
1808 * can be seen. This delay can be changed by
1809 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1810 * if desired. 100 ms produces a slightly
1811 * sluggish response.
1812 *
1813 **************************************************************/
1814
tlan_timer(struct timer_list * t)1815 static void tlan_timer(struct timer_list *t)
1816 {
1817 struct tlan_priv *priv = from_timer(priv, t, timer);
1818 struct net_device *dev = priv->dev;
1819 u32 elapsed;
1820 unsigned long flags = 0;
1821
1822 priv->timer.function = NULL;
1823
1824 switch (priv->timer_type) {
1825 case TLAN_TIMER_PHY_PDOWN:
1826 tlan_phy_power_down(dev);
1827 break;
1828 case TLAN_TIMER_PHY_PUP:
1829 tlan_phy_power_up(dev);
1830 break;
1831 case TLAN_TIMER_PHY_RESET:
1832 tlan_phy_reset(dev);
1833 break;
1834 case TLAN_TIMER_PHY_START_LINK:
1835 tlan_phy_start_link(dev);
1836 break;
1837 case TLAN_TIMER_PHY_FINISH_AN:
1838 tlan_phy_finish_auto_neg(dev);
1839 break;
1840 case TLAN_TIMER_FINISH_RESET:
1841 tlan_finish_reset(dev);
1842 break;
1843 case TLAN_TIMER_ACTIVITY:
1844 spin_lock_irqsave(&priv->lock, flags);
1845 if (priv->timer.function == NULL) {
1846 elapsed = jiffies - priv->timer_set_at;
1847 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1848 tlan_dio_write8(dev->base_addr,
1849 TLAN_LED_REG, TLAN_LED_LINK);
1850 } else {
1851 priv->timer.expires = priv->timer_set_at
1852 + TLAN_TIMER_ACT_DELAY;
1853 spin_unlock_irqrestore(&priv->lock, flags);
1854 add_timer(&priv->timer);
1855 break;
1856 }
1857 }
1858 spin_unlock_irqrestore(&priv->lock, flags);
1859 break;
1860 default:
1861 break;
1862 }
1863
1864 }
1865
1866
1867 /*****************************************************************************
1868 ******************************************************************************
1869
1870 ThunderLAN driver adapter related routines
1871
1872 ******************************************************************************
1873 *****************************************************************************/
1874
1875
1876 /***************************************************************
1877 * tlan_reset_lists
1878 *
1879 * Returns:
1880 * Nothing
1881 * Parms:
1882 * dev The device structure with the list
1883 * structures to be reset.
1884 *
1885 * This routine sets the variables associated with managing
1886 * the TLAN lists to their initial values.
1887 *
1888 **************************************************************/
1889
tlan_reset_lists(struct net_device * dev)1890 static void tlan_reset_lists(struct net_device *dev)
1891 {
1892 struct tlan_priv *priv = netdev_priv(dev);
1893 int i;
1894 struct tlan_list *list;
1895 dma_addr_t list_phys;
1896 struct sk_buff *skb;
1897
1898 priv->tx_head = 0;
1899 priv->tx_tail = 0;
1900 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1901 list = priv->tx_list + i;
1902 list->c_stat = TLAN_CSTAT_UNUSED;
1903 list->buffer[0].address = 0;
1904 list->buffer[2].count = 0;
1905 list->buffer[2].address = 0;
1906 list->buffer[8].address = 0;
1907 list->buffer[9].address = 0;
1908 }
1909
1910 priv->rx_head = 0;
1911 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1912 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1913 list = priv->rx_list + i;
1914 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1915 list->c_stat = TLAN_CSTAT_READY;
1916 list->frame_size = TLAN_MAX_FRAME_SIZE;
1917 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1918 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1919 if (!skb)
1920 break;
1921
1922 list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1923 skb->data,
1924 TLAN_MAX_FRAME_SIZE,
1925 DMA_FROM_DEVICE);
1926 tlan_store_skb(list, skb);
1927 list->buffer[1].count = 0;
1928 list->buffer[1].address = 0;
1929 list->forward = list_phys + sizeof(struct tlan_list);
1930 }
1931
1932 /* in case ran out of memory early, clear bits */
1933 while (i < TLAN_NUM_RX_LISTS) {
1934 tlan_store_skb(priv->rx_list + i, NULL);
1935 ++i;
1936 }
1937 list->forward = 0;
1938
1939 }
1940
1941
tlan_free_lists(struct net_device * dev)1942 static void tlan_free_lists(struct net_device *dev)
1943 {
1944 struct tlan_priv *priv = netdev_priv(dev);
1945 int i;
1946 struct tlan_list *list;
1947 struct sk_buff *skb;
1948
1949 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1950 list = priv->tx_list + i;
1951 skb = tlan_get_skb(list);
1952 if (skb) {
1953 dma_unmap_single(&priv->pci_dev->dev,
1954 list->buffer[0].address,
1955 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1956 DMA_TO_DEVICE);
1957 dev_kfree_skb_any(skb);
1958 list->buffer[8].address = 0;
1959 list->buffer[9].address = 0;
1960 }
1961 }
1962
1963 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1964 list = priv->rx_list + i;
1965 skb = tlan_get_skb(list);
1966 if (skb) {
1967 dma_unmap_single(&priv->pci_dev->dev,
1968 list->buffer[0].address,
1969 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1970 dev_kfree_skb_any(skb);
1971 list->buffer[8].address = 0;
1972 list->buffer[9].address = 0;
1973 }
1974 }
1975 }
1976
1977
1978
1979
1980 /***************************************************************
1981 * tlan_print_dio
1982 *
1983 * Returns:
1984 * Nothing
1985 * Parms:
1986 * io_base Base IO port of the device of
1987 * which to print DIO registers.
1988 *
1989 * This function prints out all the internal (DIO)
1990 * registers of a TLAN chip.
1991 *
1992 **************************************************************/
1993
tlan_print_dio(u16 io_base)1994 static void tlan_print_dio(u16 io_base)
1995 {
1996 u32 data0, data1;
1997 int i;
1998
1999 pr_info("Contents of internal registers for io base 0x%04hx\n",
2000 io_base);
2001 pr_info("Off. +0 +4\n");
2002 for (i = 0; i < 0x4C; i += 8) {
2003 data0 = tlan_dio_read32(io_base, i);
2004 data1 = tlan_dio_read32(io_base, i + 0x4);
2005 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2006 }
2007
2008 }
2009
2010
2011
2012
2013 /***************************************************************
2014 * TLan_PrintList
2015 *
2016 * Returns:
2017 * Nothing
2018 * Parms:
2019 * list A pointer to the struct tlan_list structure to
2020 * be printed.
2021 * type A string to designate type of list,
2022 * "Rx" or "Tx".
2023 * num The index of the list.
2024 *
2025 * This function prints out the contents of the list
2026 * pointed to by the list parameter.
2027 *
2028 **************************************************************/
2029
tlan_print_list(struct tlan_list * list,char * type,int num)2030 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2031 {
2032 int i;
2033
2034 pr_info("%s List %d at %p\n", type, num, list);
2035 pr_info(" Forward = 0x%08x\n", list->forward);
2036 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2037 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2038 /* for (i = 0; i < 10; i++) { */
2039 for (i = 0; i < 2; i++) {
2040 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2041 i, list->buffer[i].count, list->buffer[i].address);
2042 }
2043
2044 }
2045
2046
2047
2048
2049 /***************************************************************
2050 * tlan_read_and_clear_stats
2051 *
2052 * Returns:
2053 * Nothing
2054 * Parms:
2055 * dev Pointer to device structure of adapter
2056 * to which to read stats.
2057 * record Flag indicating whether to add
2058 *
2059 * This functions reads all the internal status registers
2060 * of the TLAN chip, which clears them as a side effect.
2061 * It then either adds the values to the device's status
2062 * struct, or discards them, depending on whether record
2063 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2064 *
2065 **************************************************************/
2066
tlan_read_and_clear_stats(struct net_device * dev,int record)2067 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2068 {
2069 u32 tx_good, tx_under;
2070 u32 rx_good, rx_over;
2071 u32 def_tx, crc, code;
2072 u32 multi_col, single_col;
2073 u32 excess_col, late_col, loss;
2074
2075 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2076 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2077 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2078 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2079 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2080
2081 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2082 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2083 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2084 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2085 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2086
2087 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2088 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2089 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2090 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2091 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2092
2093 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2094 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2095 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2096 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2097 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2098
2099 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2100 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2101 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2102 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2103
2104 if (record) {
2105 dev->stats.rx_packets += rx_good;
2106 dev->stats.rx_errors += rx_over + crc + code;
2107 dev->stats.tx_packets += tx_good;
2108 dev->stats.tx_errors += tx_under + loss;
2109 dev->stats.collisions += multi_col
2110 + single_col + excess_col + late_col;
2111
2112 dev->stats.rx_over_errors += rx_over;
2113 dev->stats.rx_crc_errors += crc;
2114 dev->stats.rx_frame_errors += code;
2115
2116 dev->stats.tx_aborted_errors += tx_under;
2117 dev->stats.tx_carrier_errors += loss;
2118 }
2119
2120 }
2121
2122
2123
2124
2125 /***************************************************************
2126 * TLan_Reset
2127 *
2128 * Returns:
2129 * 0
2130 * Parms:
2131 * dev Pointer to device structure of adapter
2132 * to be reset.
2133 *
2134 * This function resets the adapter and it's physical
2135 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2136 * Programmer's Guide" for details. The routine tries to
2137 * implement what is detailed there, though adjustments
2138 * have been made.
2139 *
2140 **************************************************************/
2141
2142 static void
tlan_reset_adapter(struct net_device * dev)2143 tlan_reset_adapter(struct net_device *dev)
2144 {
2145 struct tlan_priv *priv = netdev_priv(dev);
2146 int i;
2147 u32 addr;
2148 u32 data;
2149 u8 data8;
2150
2151 priv->tlan_full_duplex = false;
2152 priv->phy_online = 0;
2153 netif_carrier_off(dev);
2154
2155 /* 1. Assert reset bit. */
2156
2157 data = inl(dev->base_addr + TLAN_HOST_CMD);
2158 data |= TLAN_HC_AD_RST;
2159 outl(data, dev->base_addr + TLAN_HOST_CMD);
2160
2161 udelay(1000);
2162
2163 /* 2. Turn off interrupts. (Probably isn't necessary) */
2164
2165 data = inl(dev->base_addr + TLAN_HOST_CMD);
2166 data |= TLAN_HC_INT_OFF;
2167 outl(data, dev->base_addr + TLAN_HOST_CMD);
2168
2169 /* 3. Clear AREGs and HASHs. */
2170
2171 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2172 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2173
2174 /* 4. Setup NetConfig register. */
2175
2176 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2177 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2178
2179 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2180
2181 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2182 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2183
2184 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2185
2186 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2187 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2188 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2189
2190 /* 7. Setup the remaining registers. */
2191
2192 if (priv->tlan_rev >= 0x30) {
2193 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2194 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2195 }
2196 tlan_phy_detect(dev);
2197 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2198
2199 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2200 data |= TLAN_NET_CFG_BIT;
2201 if (priv->aui == 1) {
2202 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2203 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2204 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2205 priv->tlan_full_duplex = true;
2206 } else {
2207 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2208 }
2209 }
2210
2211 /* don't power down internal PHY if we're going to use it */
2212 if (priv->phy_num == 0 ||
2213 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2214 data |= TLAN_NET_CFG_PHY_EN;
2215 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2216
2217 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2218 tlan_finish_reset(dev);
2219 else
2220 tlan_phy_power_down(dev);
2221
2222 }
2223
2224
2225
2226
2227 static void
tlan_finish_reset(struct net_device * dev)2228 tlan_finish_reset(struct net_device *dev)
2229 {
2230 struct tlan_priv *priv = netdev_priv(dev);
2231 u8 data;
2232 u32 phy;
2233 u8 sio;
2234 u16 status;
2235 u16 partner;
2236 u16 tlphy_ctl;
2237 u16 tlphy_par;
2238 u16 tlphy_id1, tlphy_id2;
2239 int i;
2240
2241 phy = priv->phy[priv->phy_num];
2242
2243 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2244 if (priv->tlan_full_duplex)
2245 data |= TLAN_NET_CMD_DUPLEX;
2246 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2247 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2248 if (priv->phy_num == 0)
2249 data |= TLAN_NET_MASK_MASK7;
2250 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2251 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2252 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2253 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2254
2255 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2256 (priv->aui)) {
2257 status = MII_GS_LINK;
2258 netdev_info(dev, "Link forced\n");
2259 } else {
2260 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2261 udelay(1000);
2262 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2263 if (status & MII_GS_LINK) {
2264 /* We only support link info on Nat.Sem. PHY's */
2265 if ((tlphy_id1 == NAT_SEM_ID1) &&
2266 (tlphy_id2 == NAT_SEM_ID2)) {
2267 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2268 &partner);
2269 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2270 &tlphy_par);
2271
2272 netdev_info(dev,
2273 "Link active, %s %uMbps %s-Duplex\n",
2274 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2275 ? "forced" : "Autonegotiation enabled,",
2276 tlphy_par & TLAN_PHY_SPEED_100
2277 ? 100 : 10,
2278 tlphy_par & TLAN_PHY_DUPLEX_FULL
2279 ? "Full" : "Half");
2280
2281 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2282 netdev_info(dev, "Partner capability:");
2283 for (i = 5; i < 10; i++)
2284 if (partner & (1 << i))
2285 pr_cont(" %s",
2286 media[i-5]);
2287 pr_cont("\n");
2288 }
2289 } else
2290 netdev_info(dev, "Link active\n");
2291 /* Enabling link beat monitoring */
2292 priv->media_timer.expires = jiffies + HZ;
2293 add_timer(&priv->media_timer);
2294 }
2295 }
2296
2297 if (priv->phy_num == 0) {
2298 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2299 tlphy_ctl |= TLAN_TC_INTEN;
2300 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2301 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2302 sio |= TLAN_NET_SIO_MINTEN;
2303 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2304 }
2305
2306 if (status & MII_GS_LINK) {
2307 tlan_set_mac(dev, 0, dev->dev_addr);
2308 priv->phy_online = 1;
2309 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2310 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2311 outb((TLAN_HC_REQ_INT >> 8),
2312 dev->base_addr + TLAN_HOST_CMD + 1);
2313 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2314 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2315 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2316 netif_carrier_on(dev);
2317 } else {
2318 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2319 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2320 return;
2321 }
2322 tlan_set_multicast_list(dev);
2323
2324 }
2325
2326
2327
2328
2329 /***************************************************************
2330 * tlan_set_mac
2331 *
2332 * Returns:
2333 * Nothing
2334 * Parms:
2335 * dev Pointer to device structure of adapter
2336 * on which to change the AREG.
2337 * areg The AREG to set the address in (0 - 3).
2338 * mac A pointer to an array of chars. Each
2339 * element stores one byte of the address.
2340 * IE, it isn't in ascii.
2341 *
2342 * This function transfers a MAC address to one of the
2343 * TLAN AREGs (address registers). The TLAN chip locks
2344 * the register on writing to offset 0 and unlocks the
2345 * register after writing to offset 5. If NULL is passed
2346 * in mac, then the AREG is filled with 0's.
2347 *
2348 **************************************************************/
2349
tlan_set_mac(struct net_device * dev,int areg,char * mac)2350 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2351 {
2352 int i;
2353
2354 areg *= 6;
2355
2356 if (mac != NULL) {
2357 for (i = 0; i < 6; i++)
2358 tlan_dio_write8(dev->base_addr,
2359 TLAN_AREG_0 + areg + i, mac[i]);
2360 } else {
2361 for (i = 0; i < 6; i++)
2362 tlan_dio_write8(dev->base_addr,
2363 TLAN_AREG_0 + areg + i, 0);
2364 }
2365
2366 }
2367
2368
2369
2370
2371 /*****************************************************************************
2372 ******************************************************************************
2373
2374 ThunderLAN driver PHY layer routines
2375
2376 ******************************************************************************
2377 *****************************************************************************/
2378
2379
2380
2381 /*********************************************************************
2382 * tlan_phy_print
2383 *
2384 * Returns:
2385 * Nothing
2386 * Parms:
2387 * dev A pointer to the device structure of the
2388 * TLAN device having the PHYs to be detailed.
2389 *
2390 * This function prints the registers a PHY (aka transceiver).
2391 *
2392 ********************************************************************/
2393
tlan_phy_print(struct net_device * dev)2394 static void tlan_phy_print(struct net_device *dev)
2395 {
2396 struct tlan_priv *priv = netdev_priv(dev);
2397 u16 i, data0, data1, data2, data3, phy;
2398
2399 phy = priv->phy[priv->phy_num];
2400
2401 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2402 netdev_info(dev, "Unmanaged PHY\n");
2403 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2404 netdev_info(dev, "PHY 0x%02x\n", phy);
2405 pr_info(" Off. +0 +1 +2 +3\n");
2406 for (i = 0; i < 0x20; i += 4) {
2407 tlan_mii_read_reg(dev, phy, i, &data0);
2408 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2409 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2410 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2411 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2412 i, data0, data1, data2, data3);
2413 }
2414 } else {
2415 netdev_info(dev, "Invalid PHY\n");
2416 }
2417
2418 }
2419
2420
2421
2422
2423 /*********************************************************************
2424 * tlan_phy_detect
2425 *
2426 * Returns:
2427 * Nothing
2428 * Parms:
2429 * dev A pointer to the device structure of the adapter
2430 * for which the PHY needs determined.
2431 *
2432 * So far I've found that adapters which have external PHYs
2433 * may also use the internal PHY for part of the functionality.
2434 * (eg, AUI/Thinnet). This function finds out if this TLAN
2435 * chip has an internal PHY, and then finds the first external
2436 * PHY (starting from address 0) if it exists).
2437 *
2438 ********************************************************************/
2439
tlan_phy_detect(struct net_device * dev)2440 static void tlan_phy_detect(struct net_device *dev)
2441 {
2442 struct tlan_priv *priv = netdev_priv(dev);
2443 u16 control;
2444 u16 hi;
2445 u16 lo;
2446 u32 phy;
2447
2448 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2449 priv->phy_num = 0xffff;
2450 return;
2451 }
2452
2453 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2454
2455 if (hi != 0xffff)
2456 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2457 else
2458 priv->phy[0] = TLAN_PHY_NONE;
2459
2460 priv->phy[1] = TLAN_PHY_NONE;
2461 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2462 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2463 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2464 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2465 if ((control != 0xffff) ||
2466 (hi != 0xffff) || (lo != 0xffff)) {
2467 TLAN_DBG(TLAN_DEBUG_GNRL,
2468 "PHY found at %02x %04x %04x %04x\n",
2469 phy, control, hi, lo);
2470 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2471 (phy != TLAN_PHY_MAX_ADDR)) {
2472 priv->phy[1] = phy;
2473 }
2474 }
2475 }
2476
2477 if (priv->phy[1] != TLAN_PHY_NONE)
2478 priv->phy_num = 1;
2479 else if (priv->phy[0] != TLAN_PHY_NONE)
2480 priv->phy_num = 0;
2481 else
2482 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2483
2484 }
2485
2486
2487
2488
tlan_phy_power_down(struct net_device * dev)2489 static void tlan_phy_power_down(struct net_device *dev)
2490 {
2491 struct tlan_priv *priv = netdev_priv(dev);
2492 u16 value;
2493
2494 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2495 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2496 tlan_mii_sync(dev->base_addr);
2497 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2498 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2499 /* if using internal PHY, the external PHY must be powered on */
2500 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2501 value = MII_GC_ISOLATE; /* just isolate it from MII */
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 arbitrary. It is intended to make sure the
2508 * transceiver settles.
2509 */
2510 tlan_set_timer(dev, msecs_to_jiffies(50), 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, msecs_to_jiffies(500), 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 unsigned long timeout = jiffies + HZ;
2544
2545 phy = priv->phy[priv->phy_num];
2546
2547 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2548 tlan_mii_sync(dev->base_addr);
2549 value = MII_GC_LOOPBK | MII_GC_RESET;
2550 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2551 do {
2552 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2553 if (time_after(jiffies, timeout)) {
2554 netdev_err(dev, "PHY reset timeout\n");
2555 return;
2556 }
2557 } while (value & MII_GC_RESET);
2558
2559 /* Wait for 500 ms and initialize.
2560 * I don't remember why I wait this long.
2561 * I've changed this to 50ms, as it seems long enough.
2562 */
2563 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2564
2565 }
2566
2567
2568
2569
tlan_phy_start_link(struct net_device * dev)2570 static void tlan_phy_start_link(struct net_device *dev)
2571 {
2572 struct tlan_priv *priv = netdev_priv(dev);
2573 u16 ability;
2574 u16 control;
2575 u16 data;
2576 u16 phy;
2577 u16 status;
2578 u16 tctl;
2579
2580 phy = priv->phy[priv->phy_num];
2581 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2582 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2583 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2584
2585 if ((status & MII_GS_AUTONEG) &&
2586 (!priv->aui)) {
2587 ability = status >> 11;
2588 if (priv->speed == TLAN_SPEED_10 &&
2589 priv->duplex == TLAN_DUPLEX_HALF) {
2590 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2591 } else if (priv->speed == TLAN_SPEED_10 &&
2592 priv->duplex == TLAN_DUPLEX_FULL) {
2593 priv->tlan_full_duplex = true;
2594 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2595 } else if (priv->speed == TLAN_SPEED_100 &&
2596 priv->duplex == TLAN_DUPLEX_HALF) {
2597 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2598 } else if (priv->speed == TLAN_SPEED_100 &&
2599 priv->duplex == TLAN_DUPLEX_FULL) {
2600 priv->tlan_full_duplex = true;
2601 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2602 } else {
2603
2604 /* Set Auto-Neg advertisement */
2605 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2606 (ability << 5) | 1);
2607 /* Enablee Auto-Neg */
2608 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2609 /* Restart Auto-Neg */
2610 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2611 /* Wait for 4 sec for autonegotiation
2612 * to complete. The max spec time is less than this
2613 * but the card need additional time to start AN.
2614 * .5 sec should be plenty extra.
2615 */
2616 netdev_info(dev, "Starting autonegotiation\n");
2617 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2618 return;
2619 }
2620
2621 }
2622
2623 if ((priv->aui) && (priv->phy_num != 0)) {
2624 priv->phy_num = 0;
2625 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2626 | TLAN_NET_CFG_PHY_EN;
2627 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2628 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2629 return;
2630 } else if (priv->phy_num == 0) {
2631 control = 0;
2632 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2633 if (priv->aui) {
2634 tctl |= TLAN_TC_AUISEL;
2635 } else {
2636 tctl &= ~TLAN_TC_AUISEL;
2637 if (priv->duplex == TLAN_DUPLEX_FULL) {
2638 control |= MII_GC_DUPLEX;
2639 priv->tlan_full_duplex = true;
2640 }
2641 if (priv->speed == TLAN_SPEED_100)
2642 control |= MII_GC_SPEEDSEL;
2643 }
2644 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2645 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2646 }
2647
2648 /* Wait for 2 sec to give the transceiver time
2649 * to establish link.
2650 */
2651 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2652
2653 }
2654
2655
2656
2657
tlan_phy_finish_auto_neg(struct net_device * dev)2658 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2659 {
2660 struct tlan_priv *priv = netdev_priv(dev);
2661 u16 an_adv;
2662 u16 an_lpa;
2663 u16 mode;
2664 u16 phy;
2665 u16 status;
2666
2667 phy = priv->phy[priv->phy_num];
2668
2669 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2670 udelay(1000);
2671 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2672
2673 if (!(status & MII_GS_AUTOCMPLT)) {
2674 /* Wait for 8 sec to give the process
2675 * more time. Perhaps we should fail after a while.
2676 */
2677 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2678 return;
2679 }
2680
2681 netdev_info(dev, "Autonegotiation complete\n");
2682 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2683 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2684 mode = an_adv & an_lpa & 0x03E0;
2685 if (mode & 0x0100)
2686 priv->tlan_full_duplex = true;
2687 else if (!(mode & 0x0080) && (mode & 0x0040))
2688 priv->tlan_full_duplex = true;
2689
2690 /* switch to internal PHY for 10 Mbps */
2691 if ((!(mode & 0x0180)) &&
2692 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2693 (priv->phy_num != 0)) {
2694 priv->phy_num = 0;
2695 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2696 return;
2697 }
2698
2699 if (priv->phy_num == 0) {
2700 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2701 (an_adv & an_lpa & 0x0040)) {
2702 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2703 MII_GC_AUTOENB | MII_GC_DUPLEX);
2704 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2705 } else {
2706 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2707 MII_GC_AUTOENB);
2708 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2709 }
2710 }
2711
2712 /* Wait for 100 ms. No reason in partiticular.
2713 */
2714 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2715
2716 }
2717
2718
2719 /*********************************************************************
2720 *
2721 * tlan_phy_monitor
2722 *
2723 * Returns:
2724 * None
2725 *
2726 * Params:
2727 * data The device structure of this device.
2728 *
2729 *
2730 * This function monitors PHY condition by reading the status
2731 * register via the MII bus, controls LINK LED and notifies the
2732 * kernel about link state.
2733 *
2734 *******************************************************************/
2735
tlan_phy_monitor(struct timer_list * t)2736 static void tlan_phy_monitor(struct timer_list *t)
2737 {
2738 struct tlan_priv *priv = from_timer(priv, t, media_timer);
2739 struct net_device *dev = priv->dev;
2740 u16 phy;
2741 u16 phy_status;
2742
2743 phy = priv->phy[priv->phy_num];
2744
2745 /* Get PHY status register */
2746 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2747
2748 /* Check if link has been lost */
2749 if (!(phy_status & MII_GS_LINK)) {
2750 if (netif_carrier_ok(dev)) {
2751 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2752 dev->name);
2753 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2754 netif_carrier_off(dev);
2755 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2756 /* power down internal PHY */
2757 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2758 MII_GC_ISOLATE;
2759
2760 tlan_mii_sync(dev->base_addr);
2761 tlan_mii_write_reg(dev, priv->phy[0],
2762 MII_GEN_CTL, data);
2763 /* set to external PHY */
2764 priv->phy_num = 1;
2765 /* restart autonegotiation */
2766 tlan_set_timer(dev, msecs_to_jiffies(400),
2767 TLAN_TIMER_PHY_PDOWN);
2768 return;
2769 }
2770 }
2771 }
2772
2773 /* Link restablished? */
2774 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2775 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2776 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2777 dev->name);
2778 netif_carrier_on(dev);
2779 }
2780 priv->media_timer.expires = jiffies + HZ;
2781 add_timer(&priv->media_timer);
2782 }
2783
2784
2785 /*****************************************************************************
2786 ******************************************************************************
2787
2788 ThunderLAN driver MII routines
2789
2790 these routines are based on the information in chap. 2 of the
2791 "ThunderLAN Programmer's Guide", pp. 15-24.
2792
2793 ******************************************************************************
2794 *****************************************************************************/
2795
2796
2797 /***************************************************************
2798 * tlan_mii_read_reg
2799 *
2800 * Returns:
2801 * false if ack received ok
2802 * true if no ack received or other error
2803 *
2804 * Parms:
2805 * dev The device structure containing
2806 * The io address and interrupt count
2807 * for this device.
2808 * phy The address of the PHY to be queried.
2809 * reg The register whose contents are to be
2810 * retrieved.
2811 * val A pointer to a variable to store the
2812 * retrieved value.
2813 *
2814 * This function uses the TLAN's MII bus to retrieve the contents
2815 * of a given register on a PHY. It sends the appropriate info
2816 * and then reads the 16-bit register value from the MII bus via
2817 * the TLAN SIO register.
2818 *
2819 **************************************************************/
2820
2821 static bool
tlan_mii_read_reg(struct net_device * dev,u16 phy,u16 reg,u16 * val)2822 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2823 {
2824 u8 nack;
2825 u16 sio, tmp;
2826 u32 i;
2827 bool err;
2828 int minten;
2829 struct tlan_priv *priv = netdev_priv(dev);
2830 unsigned long flags = 0;
2831
2832 err = false;
2833 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2834 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2835
2836 if (!in_irq())
2837 spin_lock_irqsave(&priv->lock, flags);
2838
2839 tlan_mii_sync(dev->base_addr);
2840
2841 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2842 if (minten)
2843 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2844
2845 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2846 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2847 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2848 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2849
2850
2851 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2852
2853 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2854 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2855 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2856
2857 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2858 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2859 if (nack) { /* no ACK, so fake it */
2860 for (i = 0; i < 16; i++) {
2861 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2862 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2863 }
2864 tmp = 0xffff;
2865 err = true;
2866 } else { /* ACK, so read data */
2867 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2868 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2869 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2870 tmp |= i;
2871 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2872 }
2873 }
2874
2875
2876 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2877 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2878
2879 if (minten)
2880 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2881
2882 *val = tmp;
2883
2884 if (!in_irq())
2885 spin_unlock_irqrestore(&priv->lock, flags);
2886
2887 return err;
2888
2889 }
2890
2891
2892
2893
2894 /***************************************************************
2895 * tlan_mii_send_data
2896 *
2897 * Returns:
2898 * Nothing
2899 * Parms:
2900 * base_port The base IO port of the adapter in
2901 * question.
2902 * dev The address of the PHY to be queried.
2903 * data The value to be placed on the MII bus.
2904 * num_bits The number of bits in data that are to
2905 * be placed on the MII bus.
2906 *
2907 * This function sends on sequence of bits on the MII
2908 * configuration bus.
2909 *
2910 **************************************************************/
2911
tlan_mii_send_data(u16 base_port,u32 data,unsigned num_bits)2912 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2913 {
2914 u16 sio;
2915 u32 i;
2916
2917 if (num_bits == 0)
2918 return;
2919
2920 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2921 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2922 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2923
2924 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2925 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2926 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2927 if (data & i)
2928 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2929 else
2930 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2931 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2932 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2933 }
2934
2935 }
2936
2937
2938
2939
2940 /***************************************************************
2941 * TLan_MiiSync
2942 *
2943 * Returns:
2944 * Nothing
2945 * Parms:
2946 * base_port The base IO port of the adapter in
2947 * question.
2948 *
2949 * This functions syncs all PHYs in terms of the MII configuration
2950 * bus.
2951 *
2952 **************************************************************/
2953
tlan_mii_sync(u16 base_port)2954 static void tlan_mii_sync(u16 base_port)
2955 {
2956 int i;
2957 u16 sio;
2958
2959 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2960 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2961
2962 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2963 for (i = 0; i < 32; i++) {
2964 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2965 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2966 }
2967
2968 }
2969
2970
2971
2972
2973 /***************************************************************
2974 * tlan_mii_write_reg
2975 *
2976 * Returns:
2977 * Nothing
2978 * Parms:
2979 * dev The device structure for the device
2980 * to write to.
2981 * phy The address of the PHY to be written to.
2982 * reg The register whose contents are to be
2983 * written.
2984 * val The value to be written to the register.
2985 *
2986 * This function uses the TLAN's MII bus to write the contents of a
2987 * given register on a PHY. It sends the appropriate info and then
2988 * writes the 16-bit register value from the MII configuration bus
2989 * via the TLAN SIO register.
2990 *
2991 **************************************************************/
2992
2993 static void
tlan_mii_write_reg(struct net_device * dev,u16 phy,u16 reg,u16 val)2994 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2995 {
2996 u16 sio;
2997 int minten;
2998 unsigned long flags = 0;
2999 struct tlan_priv *priv = netdev_priv(dev);
3000
3001 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3002 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3003
3004 if (!in_irq())
3005 spin_lock_irqsave(&priv->lock, flags);
3006
3007 tlan_mii_sync(dev->base_addr);
3008
3009 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3010 if (minten)
3011 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3012
3013 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3014 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3015 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3016 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3017
3018 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3019 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3020
3021 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3022 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3023
3024 if (minten)
3025 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3026
3027 if (!in_irq())
3028 spin_unlock_irqrestore(&priv->lock, flags);
3029
3030 }
3031
3032
3033
3034
3035 /*****************************************************************************
3036 ******************************************************************************
3037
3038 ThunderLAN driver eeprom routines
3039
3040 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3041 EEPROM. these functions are based on information in microchip's
3042 data sheet. I don't know how well this functions will work with
3043 other Eeproms.
3044
3045 ******************************************************************************
3046 *****************************************************************************/
3047
3048
3049 /***************************************************************
3050 * tlan_ee_send_start
3051 *
3052 * Returns:
3053 * Nothing
3054 * Parms:
3055 * io_base The IO port base address for the
3056 * TLAN device with the EEPROM to
3057 * use.
3058 *
3059 * This function sends a start cycle to an EEPROM attached
3060 * to a TLAN chip.
3061 *
3062 **************************************************************/
3063
tlan_ee_send_start(u16 io_base)3064 static void tlan_ee_send_start(u16 io_base)
3065 {
3066 u16 sio;
3067
3068 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3069 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3070
3071 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3072 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3073 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3074 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3075 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3076
3077 }
3078
3079
3080
3081
3082 /***************************************************************
3083 * tlan_ee_send_byte
3084 *
3085 * Returns:
3086 * If the correct ack was received, 0, otherwise 1
3087 * Parms: io_base The IO port base address for the
3088 * TLAN device with the EEPROM to
3089 * use.
3090 * data The 8 bits of information to
3091 * send to the EEPROM.
3092 * stop If TLAN_EEPROM_STOP is passed, a
3093 * stop cycle is sent after the
3094 * byte is sent after the ack is
3095 * read.
3096 *
3097 * This function sends a byte on the serial EEPROM line,
3098 * driving the clock to send each bit. The function then
3099 * reverses transmission direction and reads an acknowledge
3100 * bit.
3101 *
3102 **************************************************************/
3103
tlan_ee_send_byte(u16 io_base,u8 data,int stop)3104 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3105 {
3106 int err;
3107 u8 place;
3108 u16 sio;
3109
3110 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3111 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3112
3113 /* Assume clock is low, tx is enabled; */
3114 for (place = 0x80; place != 0; place >>= 1) {
3115 if (place & data)
3116 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3117 else
3118 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3119 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3120 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3121 }
3122 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3123 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3124 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3125 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3126 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3127
3128 if ((!err) && stop) {
3129 /* STOP, raise data while clock is high */
3130 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3131 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3132 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3133 }
3134
3135 return err;
3136
3137 }
3138
3139
3140
3141
3142 /***************************************************************
3143 * tlan_ee_receive_byte
3144 *
3145 * Returns:
3146 * Nothing
3147 * Parms:
3148 * io_base The IO port base address for the
3149 * TLAN device with the EEPROM to
3150 * use.
3151 * data An address to a char to hold the
3152 * data sent from the EEPROM.
3153 * stop If TLAN_EEPROM_STOP is passed, a
3154 * stop cycle is sent after the
3155 * byte is received, and no ack is
3156 * sent.
3157 *
3158 * This function receives 8 bits of data from the EEPROM
3159 * over the serial link. It then sends and ack bit, or no
3160 * ack and a stop bit. This function is used to retrieve
3161 * data after the address of a byte in the EEPROM has been
3162 * sent.
3163 *
3164 **************************************************************/
3165
tlan_ee_receive_byte(u16 io_base,u8 * data,int stop)3166 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3167 {
3168 u8 place;
3169 u16 sio;
3170
3171 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3172 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3173 *data = 0;
3174
3175 /* Assume clock is low, tx is enabled; */
3176 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3177 for (place = 0x80; place; place >>= 1) {
3178 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3179 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3180 *data |= place;
3181 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3182 }
3183
3184 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3185 if (!stop) {
3186 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3187 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3188 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3189 } else {
3190 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3191 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3192 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3193 /* STOP, raise data while clock is high */
3194 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3195 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3196 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3197 }
3198
3199 }
3200
3201
3202
3203
3204 /***************************************************************
3205 * tlan_ee_read_byte
3206 *
3207 * Returns:
3208 * No error = 0, else, the stage at which the error
3209 * occurred.
3210 * Parms:
3211 * io_base The IO port base address for the
3212 * TLAN device with the EEPROM to
3213 * use.
3214 * ee_addr The address of the byte in the
3215 * EEPROM whose contents are to be
3216 * retrieved.
3217 * data An address to a char to hold the
3218 * data obtained from the EEPROM.
3219 *
3220 * This function reads a byte of information from an byte
3221 * cell in the EEPROM.
3222 *
3223 **************************************************************/
3224
tlan_ee_read_byte(struct net_device * dev,u8 ee_addr,u8 * data)3225 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3226 {
3227 int err;
3228 struct tlan_priv *priv = netdev_priv(dev);
3229 unsigned long flags = 0;
3230 int ret = 0;
3231
3232 spin_lock_irqsave(&priv->lock, flags);
3233
3234 tlan_ee_send_start(dev->base_addr);
3235 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3236 if (err) {
3237 ret = 1;
3238 goto fail;
3239 }
3240 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3241 if (err) {
3242 ret = 2;
3243 goto fail;
3244 }
3245 tlan_ee_send_start(dev->base_addr);
3246 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3247 if (err) {
3248 ret = 3;
3249 goto fail;
3250 }
3251 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3252 fail:
3253 spin_unlock_irqrestore(&priv->lock, flags);
3254
3255 return ret;
3256
3257 }
3258
3259
3260
3261