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, const char *mac);
188
189 static void __tlan_phy_print(struct net_device *);
190 static void tlan_phy_print(struct net_device *);
191 static void tlan_phy_detect(struct net_device *);
192 static void tlan_phy_power_down(struct net_device *);
193 static void tlan_phy_power_up(struct net_device *);
194 static void tlan_phy_reset(struct net_device *);
195 static void tlan_phy_start_link(struct net_device *);
196 static void tlan_phy_finish_auto_neg(struct net_device *);
197
198 /*
199 static int tlan_phy_nop(struct net_device *);
200 static int tlan_phy_internal_check(struct net_device *);
201 static int tlan_phy_internal_service(struct net_device *);
202 static int tlan_phy_dp83840a_check(struct net_device *);
203 */
204
205 static bool __tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
206 static void tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
207 static void tlan_mii_send_data(u16, u32, unsigned);
208 static void tlan_mii_sync(u16);
209 static void __tlan_mii_write_reg(struct net_device *, u16, u16, u16);
210 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
211
212 static void tlan_ee_send_start(u16);
213 static int tlan_ee_send_byte(u16, u8, int);
214 static void tlan_ee_receive_byte(u16, u8 *, int);
215 static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
216
217
218 static inline void
tlan_store_skb(struct tlan_list * tag,struct sk_buff * skb)219 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
220 {
221 unsigned long addr = (unsigned long)skb;
222 tag->buffer[9].address = addr;
223 tag->buffer[8].address = upper_32_bits(addr);
224 }
225
226 static inline struct sk_buff *
tlan_get_skb(const struct tlan_list * tag)227 tlan_get_skb(const struct tlan_list *tag)
228 {
229 unsigned long addr;
230
231 addr = tag->buffer[9].address;
232 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
233 return (struct sk_buff *) addr;
234 }
235
236 static u32
237 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
238 NULL,
239 tlan_handle_tx_eof,
240 tlan_handle_stat_overflow,
241 tlan_handle_rx_eof,
242 tlan_handle_dummy,
243 tlan_handle_tx_eoc,
244 tlan_handle_status_check,
245 tlan_handle_rx_eoc
246 };
247
248 static void
tlan_set_timer(struct net_device * dev,u32 ticks,u32 type)249 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
250 {
251 struct tlan_priv *priv = netdev_priv(dev);
252 unsigned long flags = 0;
253
254 spin_lock_irqsave(&priv->lock, flags);
255 if (priv->timer.function != NULL &&
256 priv->timer_type != TLAN_TIMER_ACTIVITY) {
257 spin_unlock_irqrestore(&priv->lock, flags);
258 return;
259 }
260 priv->timer.function = tlan_timer;
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 cancel_work_sync(&priv->tlan_tqueue);
317 free_netdev(dev);
318 }
319
tlan_start(struct net_device * dev)320 static void tlan_start(struct net_device *dev)
321 {
322 tlan_reset_lists(dev);
323 /* NOTE: It might not be necessary to read the stats before a
324 reset if you don't care what the values are.
325 */
326 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
327 tlan_reset_adapter(dev);
328 netif_wake_queue(dev);
329 }
330
tlan_stop(struct net_device * dev)331 static void tlan_stop(struct net_device *dev)
332 {
333 struct tlan_priv *priv = netdev_priv(dev);
334
335 del_timer_sync(&priv->media_timer);
336 tlan_read_and_clear_stats(dev, TLAN_RECORD);
337 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
338 /* Reset and power down phy */
339 tlan_reset_adapter(dev);
340 if (priv->timer.function != NULL) {
341 del_timer_sync(&priv->timer);
342 priv->timer.function = NULL;
343 }
344 }
345
tlan_suspend(struct device * dev_d)346 static int __maybe_unused tlan_suspend(struct device *dev_d)
347 {
348 struct net_device *dev = dev_get_drvdata(dev_d);
349
350 if (netif_running(dev))
351 tlan_stop(dev);
352
353 netif_device_detach(dev);
354
355 return 0;
356 }
357
tlan_resume(struct device * dev_d)358 static int __maybe_unused tlan_resume(struct device *dev_d)
359 {
360 struct net_device *dev = dev_get_drvdata(dev_d);
361 netif_device_attach(dev);
362
363 if (netif_running(dev))
364 tlan_start(dev);
365
366 return 0;
367 }
368
369 static SIMPLE_DEV_PM_OPS(tlan_pm_ops, tlan_suspend, tlan_resume);
370
371 static struct pci_driver tlan_driver = {
372 .name = "tlan",
373 .id_table = tlan_pci_tbl,
374 .probe = tlan_init_one,
375 .remove = tlan_remove_one,
376 .driver.pm = &tlan_pm_ops,
377 };
378
tlan_probe(void)379 static int __init tlan_probe(void)
380 {
381 int rc = -ENODEV;
382
383 pr_info("%s", tlan_banner);
384
385 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
386
387 /* Use new style PCI probing. Now the kernel will
388 do most of this for us */
389 rc = pci_register_driver(&tlan_driver);
390
391 if (rc != 0) {
392 pr_err("Could not register pci driver\n");
393 goto err_out_pci_free;
394 }
395
396 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
397 tlan_eisa_probe();
398
399 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
400 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
401 tlan_have_pci, tlan_have_eisa);
402
403 if (tlan_devices_installed == 0) {
404 rc = -ENODEV;
405 goto err_out_pci_unreg;
406 }
407 return 0;
408
409 err_out_pci_unreg:
410 pci_unregister_driver(&tlan_driver);
411 err_out_pci_free:
412 return rc;
413 }
414
415
tlan_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)416 static int tlan_init_one(struct pci_dev *pdev,
417 const struct pci_device_id *ent)
418 {
419 return tlan_probe1(pdev, -1, -1, 0, ent);
420 }
421
422
423 /*
424 ***************************************************************
425 * tlan_probe1
426 *
427 * Returns:
428 * 0 on success, error code on error
429 * Parms:
430 * none
431 *
432 * The name is lower case to fit in with all the rest of
433 * the netcard_probe names. This function looks for
434 * another TLan based adapter, setting it up with the
435 * allocated device struct if one is found.
436 * tlan_probe has been ported to the new net API and
437 * now allocates its own device structure. This function
438 * is also used by modules.
439 *
440 **************************************************************/
441
tlan_probe1(struct pci_dev * pdev,long ioaddr,int irq,int rev,const struct pci_device_id * ent)442 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
443 const struct pci_device_id *ent)
444 {
445
446 struct net_device *dev;
447 struct tlan_priv *priv;
448 u16 device_id;
449 int reg, rc = -ENODEV;
450
451 #ifdef CONFIG_PCI
452 if (pdev) {
453 rc = pci_enable_device(pdev);
454 if (rc)
455 return rc;
456
457 rc = pci_request_regions(pdev, tlan_signature);
458 if (rc) {
459 pr_err("Could not reserve IO regions\n");
460 goto err_out;
461 }
462 }
463 #endif /* CONFIG_PCI */
464
465 dev = alloc_etherdev(sizeof(struct tlan_priv));
466 if (dev == NULL) {
467 rc = -ENOMEM;
468 goto err_out_regions;
469 }
470 SET_NETDEV_DEV(dev, &pdev->dev);
471
472 priv = netdev_priv(dev);
473
474 priv->pci_dev = pdev;
475 priv->dev = dev;
476
477 /* Is this a PCI device? */
478 if (pdev) {
479 u32 pci_io_base = 0;
480
481 priv->adapter = &board_info[ent->driver_data];
482
483 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
484 if (rc) {
485 pr_err("No suitable PCI mapping available\n");
486 goto err_out_free_dev;
487 }
488
489 for (reg = 0; reg <= 5; reg++) {
490 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
491 pci_io_base = pci_resource_start(pdev, reg);
492 TLAN_DBG(TLAN_DEBUG_GNRL,
493 "IO mapping is available at %x.\n",
494 pci_io_base);
495 break;
496 }
497 }
498 if (!pci_io_base) {
499 pr_err("No IO mappings available\n");
500 rc = -EIO;
501 goto err_out_free_dev;
502 }
503
504 dev->base_addr = pci_io_base;
505 dev->irq = pdev->irq;
506 priv->adapter_rev = pdev->revision;
507 pci_set_master(pdev);
508 pci_set_drvdata(pdev, dev);
509
510 } else { /* EISA card */
511 /* This is a hack. We need to know which board structure
512 * is suited for this adapter */
513 device_id = inw(ioaddr + EISA_ID2);
514 if (device_id == 0x20F1) {
515 priv->adapter = &board_info[13]; /* NetFlex-3/E */
516 priv->adapter_rev = 23; /* TLAN 2.3 */
517 } else {
518 priv->adapter = &board_info[14];
519 priv->adapter_rev = 10; /* TLAN 1.0 */
520 }
521 dev->base_addr = ioaddr;
522 dev->irq = irq;
523 }
524
525 /* Kernel parameters */
526 if (dev->mem_start) {
527 priv->aui = dev->mem_start & 0x01;
528 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
529 : (dev->mem_start & 0x06) >> 1;
530 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
531 : (dev->mem_start & 0x18) >> 3;
532
533 if (priv->speed == 0x1)
534 priv->speed = TLAN_SPEED_10;
535 else if (priv->speed == 0x2)
536 priv->speed = TLAN_SPEED_100;
537
538 debug = priv->debug = dev->mem_end;
539 } else {
540 priv->aui = aui[boards_found];
541 priv->speed = speed[boards_found];
542 priv->duplex = duplex[boards_found];
543 priv->debug = debug;
544 }
545
546 /* This will be used when we get an adapter error from
547 * within our irq handler */
548 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
549
550 spin_lock_init(&priv->lock);
551
552 rc = tlan_init(dev);
553 if (rc) {
554 pr_err("Could not set up device\n");
555 goto err_out_free_dev;
556 }
557
558 rc = register_netdev(dev);
559 if (rc) {
560 pr_err("Could not register device\n");
561 goto err_out_uninit;
562 }
563
564
565 tlan_devices_installed++;
566 boards_found++;
567
568 /* pdev is NULL if this is an EISA device */
569 if (pdev)
570 tlan_have_pci++;
571 else {
572 priv->next_device = tlan_eisa_devices;
573 tlan_eisa_devices = dev;
574 tlan_have_eisa++;
575 }
576
577 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
578 (int)dev->irq,
579 (int)dev->base_addr,
580 priv->adapter->device_label,
581 priv->adapter_rev);
582 return 0;
583
584 err_out_uninit:
585 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
586 priv->dma_storage, priv->dma_storage_dma);
587 err_out_free_dev:
588 free_netdev(dev);
589 err_out_regions:
590 #ifdef CONFIG_PCI
591 if (pdev)
592 pci_release_regions(pdev);
593 err_out:
594 #endif
595 if (pdev)
596 pci_disable_device(pdev);
597 return rc;
598 }
599
600
tlan_eisa_cleanup(void)601 static void tlan_eisa_cleanup(void)
602 {
603 struct net_device *dev;
604 struct tlan_priv *priv;
605
606 while (tlan_have_eisa) {
607 dev = tlan_eisa_devices;
608 priv = netdev_priv(dev);
609 if (priv->dma_storage) {
610 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
611 priv->dma_storage,
612 priv->dma_storage_dma);
613 }
614 release_region(dev->base_addr, 0x10);
615 unregister_netdev(dev);
616 tlan_eisa_devices = priv->next_device;
617 free_netdev(dev);
618 tlan_have_eisa--;
619 }
620 }
621
622
tlan_exit(void)623 static void __exit tlan_exit(void)
624 {
625 pci_unregister_driver(&tlan_driver);
626
627 if (tlan_have_eisa)
628 tlan_eisa_cleanup();
629
630 }
631
632
633 /* Module loading/unloading */
634 module_init(tlan_probe);
635 module_exit(tlan_exit);
636
637
638
639 /**************************************************************
640 * tlan_eisa_probe
641 *
642 * Returns: 0 on success, 1 otherwise
643 *
644 * Parms: None
645 *
646 *
647 * This functions probes for EISA devices and calls
648 * TLan_probe1 when one is found.
649 *
650 *************************************************************/
651
tlan_eisa_probe(void)652 static void __init tlan_eisa_probe(void)
653 {
654 long ioaddr;
655 int irq;
656 u16 device_id;
657
658 if (!EISA_bus) {
659 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
660 return;
661 }
662
663 /* Loop through all slots of the EISA bus */
664 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
665
666 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
667 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
668 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
669 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
670
671
672 TLAN_DBG(TLAN_DEBUG_PROBE,
673 "Probing for EISA adapter at IO: 0x%4x : ",
674 (int) ioaddr);
675 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
676 goto out;
677
678 if (inw(ioaddr + EISA_ID) != 0x110E) {
679 release_region(ioaddr, 0x10);
680 goto out;
681 }
682
683 device_id = inw(ioaddr + EISA_ID2);
684 if (device_id != 0x20F1 && device_id != 0x40F1) {
685 release_region(ioaddr, 0x10);
686 goto out;
687 }
688
689 /* check if adapter is enabled */
690 if (inb(ioaddr + EISA_CR) != 0x1) {
691 release_region(ioaddr, 0x10);
692 goto out2;
693 }
694
695 if (debug == 0x10)
696 pr_info("Found one\n");
697
698
699 /* Get irq from board */
700 switch (inb(ioaddr + 0xcc0)) {
701 case(0x10):
702 irq = 5;
703 break;
704 case(0x20):
705 irq = 9;
706 break;
707 case(0x40):
708 irq = 10;
709 break;
710 case(0x80):
711 irq = 11;
712 break;
713 default:
714 goto out;
715 }
716
717
718 /* Setup the newly found eisa adapter */
719 tlan_probe1(NULL, ioaddr, irq, 12, NULL);
720 continue;
721
722 out:
723 if (debug == 0x10)
724 pr_info("None found\n");
725 continue;
726
727 out2:
728 if (debug == 0x10)
729 pr_info("Card found but it is not enabled, skipping\n");
730 continue;
731
732 }
733
734 }
735
736 #ifdef CONFIG_NET_POLL_CONTROLLER
tlan_poll(struct net_device * dev)737 static void tlan_poll(struct net_device *dev)
738 {
739 disable_irq(dev->irq);
740 tlan_handle_interrupt(dev->irq, dev);
741 enable_irq(dev->irq);
742 }
743 #endif
744
745 static const struct net_device_ops tlan_netdev_ops = {
746 .ndo_open = tlan_open,
747 .ndo_stop = tlan_close,
748 .ndo_start_xmit = tlan_start_tx,
749 .ndo_tx_timeout = tlan_tx_timeout,
750 .ndo_get_stats = tlan_get_stats,
751 .ndo_set_rx_mode = tlan_set_multicast_list,
752 .ndo_eth_ioctl = tlan_ioctl,
753 .ndo_set_mac_address = eth_mac_addr,
754 .ndo_validate_addr = eth_validate_addr,
755 #ifdef CONFIG_NET_POLL_CONTROLLER
756 .ndo_poll_controller = tlan_poll,
757 #endif
758 };
759
tlan_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)760 static void tlan_get_drvinfo(struct net_device *dev,
761 struct ethtool_drvinfo *info)
762 {
763 struct tlan_priv *priv = netdev_priv(dev);
764
765 strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
766 if (priv->pci_dev)
767 strscpy(info->bus_info, pci_name(priv->pci_dev),
768 sizeof(info->bus_info));
769 else
770 strscpy(info->bus_info, "EISA", sizeof(info->bus_info));
771 }
772
tlan_get_eeprom_len(struct net_device * dev)773 static int tlan_get_eeprom_len(struct net_device *dev)
774 {
775 return TLAN_EEPROM_SIZE;
776 }
777
tlan_get_eeprom(struct net_device * dev,struct ethtool_eeprom * eeprom,u8 * data)778 static int tlan_get_eeprom(struct net_device *dev,
779 struct ethtool_eeprom *eeprom, u8 *data)
780 {
781 int i;
782
783 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
784 if (tlan_ee_read_byte(dev, i, &data[i]))
785 return -EIO;
786
787 return 0;
788 }
789
790 static const struct ethtool_ops tlan_ethtool_ops = {
791 .get_drvinfo = tlan_get_drvinfo,
792 .get_link = ethtool_op_get_link,
793 .get_eeprom_len = tlan_get_eeprom_len,
794 .get_eeprom = tlan_get_eeprom,
795 };
796
797 /***************************************************************
798 * tlan_init
799 *
800 * Returns:
801 * 0 on success, error code otherwise.
802 * Parms:
803 * dev The structure of the device to be
804 * init'ed.
805 *
806 * This function completes the initialization of the
807 * device structure and driver. It reserves the IO
808 * addresses, allocates memory for the lists and bounce
809 * buffers, retrieves the MAC address from the eeprom
810 * and assignes the device's methods.
811 *
812 **************************************************************/
813
tlan_init(struct net_device * dev)814 static int tlan_init(struct net_device *dev)
815 {
816 int dma_size;
817 int err;
818 int i;
819 struct tlan_priv *priv;
820 u8 addr[ETH_ALEN];
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 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 = addr[i];
855 addr[i] = addr[i + 1];
856 addr[i + 1] = tmp;
857 }
858 }
859 eth_hw_addr_set(dev, addr);
860
861 netif_carrier_off(dev);
862
863 /* Device methods */
864 dev->netdev_ops = &tlan_netdev_ops;
865 dev->ethtool_ops = &tlan_ethtool_ops;
866 dev->watchdog_timeo = TX_TIMEOUT;
867
868 return 0;
869
870 }
871
872
873
874
875 /***************************************************************
876 * tlan_open
877 *
878 * Returns:
879 * 0 on success, error code otherwise.
880 * Parms:
881 * dev Structure of device to be opened.
882 *
883 * This routine puts the driver and TLAN adapter in a
884 * state where it is ready to send and receive packets.
885 * It allocates the IRQ, resets and brings the adapter
886 * out of reset, and allows interrupts. It also delays
887 * the startup for autonegotiation or sends a Rx GO
888 * command to the adapter, as appropriate.
889 *
890 **************************************************************/
891
tlan_open(struct net_device * dev)892 static int tlan_open(struct net_device *dev)
893 {
894 struct tlan_priv *priv = netdev_priv(dev);
895 int err;
896
897 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
898 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
899 dev->name, dev);
900
901 if (err) {
902 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
903 dev->irq);
904 return err;
905 }
906
907 timer_setup(&priv->timer, NULL, 0);
908 timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
909
910 tlan_start(dev);
911
912 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
913 dev->name, priv->tlan_rev);
914
915 return 0;
916
917 }
918
919
920
921 /**************************************************************
922 * tlan_ioctl
923 *
924 * Returns:
925 * 0 on success, error code otherwise
926 * Params:
927 * dev structure of device to receive ioctl.
928 *
929 * rq ifreq structure to hold userspace data.
930 *
931 * cmd ioctl command.
932 *
933 *
934 *************************************************************/
935
tlan_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)936 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
937 {
938 struct tlan_priv *priv = netdev_priv(dev);
939 struct mii_ioctl_data *data = if_mii(rq);
940 u32 phy = priv->phy[priv->phy_num];
941
942 if (!priv->phy_online)
943 return -EAGAIN;
944
945 switch (cmd) {
946 case SIOCGMIIPHY: /* get address of MII PHY in use. */
947 data->phy_id = phy;
948 fallthrough;
949
950
951 case SIOCGMIIREG: /* read MII PHY register. */
952 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
953 data->reg_num & 0x1f, &data->val_out);
954 return 0;
955
956
957 case SIOCSMIIREG: /* write MII PHY register. */
958 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
959 data->reg_num & 0x1f, data->val_in);
960 return 0;
961 default:
962 return -EOPNOTSUPP;
963 }
964 }
965
966
967 /***************************************************************
968 * tlan_tx_timeout
969 *
970 * Returns: nothing
971 *
972 * Params:
973 * dev structure of device which timed out
974 * during transmit.
975 *
976 **************************************************************/
977
tlan_tx_timeout(struct net_device * dev,unsigned int txqueue)978 static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue)
979 {
980
981 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
982
983 /* Ok so we timed out, lets see what we can do about it...*/
984 tlan_free_lists(dev);
985 tlan_reset_lists(dev);
986 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
987 tlan_reset_adapter(dev);
988 netif_trans_update(dev); /* prevent tx timeout */
989 netif_wake_queue(dev);
990
991 }
992
993
994 /***************************************************************
995 * tlan_tx_timeout_work
996 *
997 * Returns: nothing
998 *
999 * Params:
1000 * work work item of device which timed out
1001 *
1002 **************************************************************/
1003
tlan_tx_timeout_work(struct work_struct * work)1004 static void tlan_tx_timeout_work(struct work_struct *work)
1005 {
1006 struct tlan_priv *priv =
1007 container_of(work, struct tlan_priv, tlan_tqueue);
1008
1009 tlan_tx_timeout(priv->dev, UINT_MAX);
1010 }
1011
1012
1013
1014 /***************************************************************
1015 * tlan_start_tx
1016 *
1017 * Returns:
1018 * 0 on success, non-zero on failure.
1019 * Parms:
1020 * skb A pointer to the sk_buff containing the
1021 * frame to be sent.
1022 * dev The device to send the data on.
1023 *
1024 * This function adds a frame to the Tx list to be sent
1025 * ASAP. First it verifies that the adapter is ready and
1026 * there is room in the queue. Then it sets up the next
1027 * available list, copies the frame to the corresponding
1028 * buffer. If the adapter Tx channel is idle, it gives
1029 * the adapter a Tx Go command on the list, otherwise it
1030 * sets the forward address of the previous list to point
1031 * to this one. Then it frees the sk_buff.
1032 *
1033 **************************************************************/
1034
tlan_start_tx(struct sk_buff * skb,struct net_device * dev)1035 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1036 {
1037 struct tlan_priv *priv = netdev_priv(dev);
1038 dma_addr_t tail_list_phys;
1039 struct tlan_list *tail_list;
1040 unsigned long flags;
1041 unsigned int txlen;
1042
1043 if (!priv->phy_online) {
1044 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1045 dev->name);
1046 dev_kfree_skb_any(skb);
1047 return NETDEV_TX_OK;
1048 }
1049
1050 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1051 return NETDEV_TX_OK;
1052 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1053
1054 tail_list = priv->tx_list + priv->tx_tail;
1055 tail_list_phys =
1056 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1057
1058 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1059 TLAN_DBG(TLAN_DEBUG_TX,
1060 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1061 dev->name, priv->tx_head, priv->tx_tail);
1062 netif_stop_queue(dev);
1063 priv->tx_busy_count++;
1064 return NETDEV_TX_BUSY;
1065 }
1066
1067 tail_list->forward = 0;
1068
1069 tail_list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1070 skb->data, txlen,
1071 DMA_TO_DEVICE);
1072 tlan_store_skb(tail_list, skb);
1073
1074 tail_list->frame_size = (u16) txlen;
1075 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1076 tail_list->buffer[1].count = 0;
1077 tail_list->buffer[1].address = 0;
1078
1079 spin_lock_irqsave(&priv->lock, flags);
1080 tail_list->c_stat = TLAN_CSTAT_READY;
1081 if (!priv->tx_in_progress) {
1082 priv->tx_in_progress = 1;
1083 TLAN_DBG(TLAN_DEBUG_TX,
1084 "TRANSMIT: Starting TX on buffer %d\n",
1085 priv->tx_tail);
1086 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1087 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1088 } else {
1089 TLAN_DBG(TLAN_DEBUG_TX,
1090 "TRANSMIT: Adding buffer %d to TX channel\n",
1091 priv->tx_tail);
1092 if (priv->tx_tail == 0) {
1093 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1094 = tail_list_phys;
1095 } else {
1096 (priv->tx_list + (priv->tx_tail - 1))->forward
1097 = tail_list_phys;
1098 }
1099 }
1100 spin_unlock_irqrestore(&priv->lock, flags);
1101
1102 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1103
1104 return NETDEV_TX_OK;
1105
1106 }
1107
1108
1109
1110
1111 /***************************************************************
1112 * tlan_handle_interrupt
1113 *
1114 * Returns:
1115 * Nothing
1116 * Parms:
1117 * irq The line on which the interrupt
1118 * occurred.
1119 * dev_id A pointer to the device assigned to
1120 * this irq line.
1121 *
1122 * This function handles an interrupt generated by its
1123 * assigned TLAN adapter. The function deactivates
1124 * interrupts on its adapter, records the type of
1125 * interrupt, executes the appropriate subhandler, and
1126 * acknowdges the interrupt to the adapter (thus
1127 * re-enabling adapter interrupts.
1128 *
1129 **************************************************************/
1130
tlan_handle_interrupt(int irq,void * dev_id)1131 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1132 {
1133 struct net_device *dev = dev_id;
1134 struct tlan_priv *priv = netdev_priv(dev);
1135 u16 host_int;
1136 u16 type;
1137
1138 spin_lock(&priv->lock);
1139
1140 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1141 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1142 if (type) {
1143 u32 ack;
1144 u32 host_cmd;
1145
1146 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1147 ack = tlan_int_vector[type](dev, host_int);
1148
1149 if (ack) {
1150 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1151 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1152 }
1153 }
1154
1155 spin_unlock(&priv->lock);
1156
1157 return IRQ_RETVAL(type);
1158 }
1159
1160
1161
1162
1163 /***************************************************************
1164 * tlan_close
1165 *
1166 * Returns:
1167 * An error code.
1168 * Parms:
1169 * dev The device structure of the device to
1170 * close.
1171 *
1172 * This function shuts down the adapter. It records any
1173 * stats, puts the adapter into reset state, deactivates
1174 * its time as needed, and frees the irq it is using.
1175 *
1176 **************************************************************/
1177
tlan_close(struct net_device * dev)1178 static int tlan_close(struct net_device *dev)
1179 {
1180 tlan_stop(dev);
1181
1182 free_irq(dev->irq, dev);
1183 tlan_free_lists(dev);
1184 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1185
1186 return 0;
1187
1188 }
1189
1190
1191
1192
1193 /***************************************************************
1194 * tlan_get_stats
1195 *
1196 * Returns:
1197 * A pointer to the device's statistics structure.
1198 * Parms:
1199 * dev The device structure to return the
1200 * stats for.
1201 *
1202 * This function updates the devices statistics by reading
1203 * the TLAN chip's onboard registers. Then it returns the
1204 * address of the statistics structure.
1205 *
1206 **************************************************************/
1207
tlan_get_stats(struct net_device * dev)1208 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1209 {
1210 struct tlan_priv *priv = netdev_priv(dev);
1211 int i;
1212
1213 /* Should only read stats if open ? */
1214 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1215
1216 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1217 priv->rx_eoc_count);
1218 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1219 priv->tx_busy_count);
1220 if (debug & TLAN_DEBUG_GNRL) {
1221 tlan_print_dio(dev->base_addr);
1222 tlan_phy_print(dev);
1223 }
1224 if (debug & TLAN_DEBUG_LIST) {
1225 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1226 tlan_print_list(priv->rx_list + i, "RX", i);
1227 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1228 tlan_print_list(priv->tx_list + i, "TX", i);
1229 }
1230
1231 return &dev->stats;
1232
1233 }
1234
1235
1236
1237
1238 /***************************************************************
1239 * tlan_set_multicast_list
1240 *
1241 * Returns:
1242 * Nothing
1243 * Parms:
1244 * dev The device structure to set the
1245 * multicast list for.
1246 *
1247 * This function sets the TLAN adaptor to various receive
1248 * modes. If the IFF_PROMISC flag is set, promiscuous
1249 * mode is acitviated. Otherwise, promiscuous mode is
1250 * turned off. If the IFF_ALLMULTI flag is set, then
1251 * the hash table is set to receive all group addresses.
1252 * Otherwise, the first three multicast addresses are
1253 * stored in AREG_1-3, and the rest are selected via the
1254 * hash table, as necessary.
1255 *
1256 **************************************************************/
1257
tlan_set_multicast_list(struct net_device * dev)1258 static void tlan_set_multicast_list(struct net_device *dev)
1259 {
1260 struct netdev_hw_addr *ha;
1261 u32 hash1 = 0;
1262 u32 hash2 = 0;
1263 int i;
1264 u32 offset;
1265 u8 tmp;
1266
1267 if (dev->flags & IFF_PROMISC) {
1268 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1269 tlan_dio_write8(dev->base_addr,
1270 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1271 } else {
1272 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1273 tlan_dio_write8(dev->base_addr,
1274 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1275 if (dev->flags & IFF_ALLMULTI) {
1276 for (i = 0; i < 3; i++)
1277 tlan_set_mac(dev, i + 1, NULL);
1278 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1279 0xffffffff);
1280 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1281 0xffffffff);
1282 } else {
1283 i = 0;
1284 netdev_for_each_mc_addr(ha, dev) {
1285 if (i < 3) {
1286 tlan_set_mac(dev, i + 1,
1287 (char *) &ha->addr);
1288 } else {
1289 offset =
1290 tlan_hash_func((u8 *)&ha->addr);
1291 if (offset < 32)
1292 hash1 |= (1 << offset);
1293 else
1294 hash2 |= (1 << (offset - 32));
1295 }
1296 i++;
1297 }
1298 for ( ; i < 3; i++)
1299 tlan_set_mac(dev, i + 1, NULL);
1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1301 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1302 }
1303 }
1304
1305 }
1306
1307
1308
1309 /*****************************************************************************
1310 ******************************************************************************
1311
1312 ThunderLAN driver interrupt vectors and table
1313
1314 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1315 Programmer's Guide" for more informations on handling interrupts
1316 generated by TLAN based adapters.
1317
1318 ******************************************************************************
1319 *****************************************************************************/
1320
1321
1322
1323
1324 /***************************************************************
1325 * tlan_handle_tx_eof
1326 *
1327 * Returns:
1328 * 1
1329 * Parms:
1330 * dev Device assigned the IRQ that was
1331 * raised.
1332 * host_int The contents of the HOST_INT
1333 * port.
1334 *
1335 * This function handles Tx EOF interrupts which are raised
1336 * by the adapter when it has completed sending the
1337 * contents of a buffer. If detemines which list/buffer
1338 * was completed and resets it. If the buffer was the last
1339 * in the channel (EOC), then the function checks to see if
1340 * another buffer is ready to send, and if so, sends a Tx
1341 * Go command. Finally, the driver activates/continues the
1342 * activity LED.
1343 *
1344 **************************************************************/
1345
tlan_handle_tx_eof(struct net_device * dev,u16 host_int)1346 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1347 {
1348 struct tlan_priv *priv = netdev_priv(dev);
1349 int eoc = 0;
1350 struct tlan_list *head_list;
1351 dma_addr_t head_list_phys;
1352 u32 ack = 0;
1353 u16 tmp_c_stat;
1354
1355 TLAN_DBG(TLAN_DEBUG_TX,
1356 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1357 priv->tx_head, priv->tx_tail);
1358 head_list = priv->tx_list + priv->tx_head;
1359
1360 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1361 && (ack < 255)) {
1362 struct sk_buff *skb = tlan_get_skb(head_list);
1363
1364 ack++;
1365 dma_unmap_single(&priv->pci_dev->dev,
1366 head_list->buffer[0].address,
1367 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1368 DMA_TO_DEVICE);
1369 dev_kfree_skb_any(skb);
1370 head_list->buffer[8].address = 0;
1371 head_list->buffer[9].address = 0;
1372
1373 if (tmp_c_stat & TLAN_CSTAT_EOC)
1374 eoc = 1;
1375
1376 dev->stats.tx_bytes += head_list->frame_size;
1377
1378 head_list->c_stat = TLAN_CSTAT_UNUSED;
1379 netif_start_queue(dev);
1380 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1381 head_list = priv->tx_list + priv->tx_head;
1382 }
1383
1384 if (!ack)
1385 netdev_info(dev,
1386 "Received interrupt for uncompleted TX frame\n");
1387
1388 if (eoc) {
1389 TLAN_DBG(TLAN_DEBUG_TX,
1390 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1391 priv->tx_head, priv->tx_tail);
1392 head_list = priv->tx_list + priv->tx_head;
1393 head_list_phys = priv->tx_list_dma
1394 + sizeof(struct tlan_list)*priv->tx_head;
1395 if ((head_list->c_stat & TLAN_CSTAT_READY)
1396 == TLAN_CSTAT_READY) {
1397 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1398 ack |= TLAN_HC_GO;
1399 } else {
1400 priv->tx_in_progress = 0;
1401 }
1402 }
1403
1404 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1405 tlan_dio_write8(dev->base_addr,
1406 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1407 if (priv->timer.function == NULL) {
1408 priv->timer.function = tlan_timer;
1409 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1410 priv->timer_set_at = jiffies;
1411 priv->timer_type = TLAN_TIMER_ACTIVITY;
1412 add_timer(&priv->timer);
1413 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1414 priv->timer_set_at = jiffies;
1415 }
1416 }
1417
1418 return ack;
1419
1420 }
1421
1422
1423
1424
1425 /***************************************************************
1426 * TLan_HandleStatOverflow
1427 *
1428 * Returns:
1429 * 1
1430 * Parms:
1431 * dev Device assigned the IRQ that was
1432 * raised.
1433 * host_int The contents of the HOST_INT
1434 * port.
1435 *
1436 * This function handles the Statistics Overflow interrupt
1437 * which means that one or more of the TLAN statistics
1438 * registers has reached 1/2 capacity and needs to be read.
1439 *
1440 **************************************************************/
1441
tlan_handle_stat_overflow(struct net_device * dev,u16 host_int)1442 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1443 {
1444 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1445
1446 return 1;
1447
1448 }
1449
1450
1451
1452
1453 /***************************************************************
1454 * TLan_HandleRxEOF
1455 *
1456 * Returns:
1457 * 1
1458 * Parms:
1459 * dev Device assigned the IRQ that was
1460 * raised.
1461 * host_int The contents of the HOST_INT
1462 * port.
1463 *
1464 * This function handles the Rx EOF interrupt which
1465 * indicates a frame has been received by the adapter from
1466 * the net and the frame has been transferred to memory.
1467 * The function determines the bounce buffer the frame has
1468 * been loaded into, creates a new sk_buff big enough to
1469 * hold the frame, and sends it to protocol stack. It
1470 * then resets the used buffer and appends it to the end
1471 * of the list. If the frame was the last in the Rx
1472 * channel (EOC), the function restarts the receive channel
1473 * by sending an Rx Go command to the adapter. Then it
1474 * activates/continues the activity LED.
1475 *
1476 **************************************************************/
1477
tlan_handle_rx_eof(struct net_device * dev,u16 host_int)1478 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1479 {
1480 struct tlan_priv *priv = netdev_priv(dev);
1481 u32 ack = 0;
1482 int eoc = 0;
1483 struct tlan_list *head_list;
1484 struct sk_buff *skb;
1485 struct tlan_list *tail_list;
1486 u16 tmp_c_stat;
1487 dma_addr_t head_list_phys;
1488
1489 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1490 priv->rx_head, priv->rx_tail);
1491 head_list = priv->rx_list + priv->rx_head;
1492 head_list_phys =
1493 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1494
1495 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1496 && (ack < 255)) {
1497 dma_addr_t frame_dma = head_list->buffer[0].address;
1498 u32 frame_size = head_list->frame_size;
1499 struct sk_buff *new_skb;
1500
1501 ack++;
1502 if (tmp_c_stat & TLAN_CSTAT_EOC)
1503 eoc = 1;
1504
1505 new_skb = netdev_alloc_skb_ip_align(dev,
1506 TLAN_MAX_FRAME_SIZE + 5);
1507 if (!new_skb)
1508 goto drop_and_reuse;
1509
1510 skb = tlan_get_skb(head_list);
1511 dma_unmap_single(&priv->pci_dev->dev, frame_dma,
1512 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1513 skb_put(skb, frame_size);
1514
1515 dev->stats.rx_bytes += frame_size;
1516
1517 skb->protocol = eth_type_trans(skb, dev);
1518 netif_rx(skb);
1519
1520 head_list->buffer[0].address =
1521 dma_map_single(&priv->pci_dev->dev, new_skb->data,
1522 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1523
1524 tlan_store_skb(head_list, new_skb);
1525 drop_and_reuse:
1526 head_list->forward = 0;
1527 head_list->c_stat = 0;
1528 tail_list = priv->rx_list + priv->rx_tail;
1529 tail_list->forward = head_list_phys;
1530
1531 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1532 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1533 head_list = priv->rx_list + priv->rx_head;
1534 head_list_phys = priv->rx_list_dma
1535 + sizeof(struct tlan_list)*priv->rx_head;
1536 }
1537
1538 if (!ack)
1539 netdev_info(dev,
1540 "Received interrupt for uncompleted RX frame\n");
1541
1542
1543 if (eoc) {
1544 TLAN_DBG(TLAN_DEBUG_RX,
1545 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1546 priv->rx_head, priv->rx_tail);
1547 head_list = priv->rx_list + priv->rx_head;
1548 head_list_phys = priv->rx_list_dma
1549 + sizeof(struct tlan_list)*priv->rx_head;
1550 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1551 ack |= TLAN_HC_GO | TLAN_HC_RT;
1552 priv->rx_eoc_count++;
1553 }
1554
1555 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1556 tlan_dio_write8(dev->base_addr,
1557 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1558 if (priv->timer.function == NULL) {
1559 priv->timer.function = tlan_timer;
1560 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1561 priv->timer_set_at = jiffies;
1562 priv->timer_type = TLAN_TIMER_ACTIVITY;
1563 add_timer(&priv->timer);
1564 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1565 priv->timer_set_at = jiffies;
1566 }
1567 }
1568
1569 return ack;
1570
1571 }
1572
1573
1574
1575
1576 /***************************************************************
1577 * tlan_handle_dummy
1578 *
1579 * Returns:
1580 * 1
1581 * Parms:
1582 * dev Device assigned the IRQ that was
1583 * raised.
1584 * host_int The contents of the HOST_INT
1585 * port.
1586 *
1587 * This function handles the Dummy interrupt, which is
1588 * raised whenever a test interrupt is generated by setting
1589 * the Req_Int bit of HOST_CMD to 1.
1590 *
1591 **************************************************************/
1592
tlan_handle_dummy(struct net_device * dev,u16 host_int)1593 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1594 {
1595 netdev_info(dev, "Test interrupt\n");
1596 return 1;
1597
1598 }
1599
1600
1601
1602
1603 /***************************************************************
1604 * tlan_handle_tx_eoc
1605 *
1606 * Returns:
1607 * 1
1608 * Parms:
1609 * dev Device assigned the IRQ that was
1610 * raised.
1611 * host_int The contents of the HOST_INT
1612 * port.
1613 *
1614 * This driver is structured to determine EOC occurrences by
1615 * reading the CSTAT member of the list structure. Tx EOC
1616 * interrupts are disabled via the DIO INTDIS register.
1617 * However, TLAN chips before revision 3.0 didn't have this
1618 * functionality, so process EOC events if this is the
1619 * case.
1620 *
1621 **************************************************************/
1622
tlan_handle_tx_eoc(struct net_device * dev,u16 host_int)1623 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1624 {
1625 struct tlan_priv *priv = netdev_priv(dev);
1626 struct tlan_list *head_list;
1627 dma_addr_t head_list_phys;
1628 u32 ack = 1;
1629
1630 if (priv->tlan_rev < 0x30) {
1631 TLAN_DBG(TLAN_DEBUG_TX,
1632 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1633 priv->tx_head, priv->tx_tail);
1634 head_list = priv->tx_list + priv->tx_head;
1635 head_list_phys = priv->tx_list_dma
1636 + sizeof(struct tlan_list)*priv->tx_head;
1637 if ((head_list->c_stat & TLAN_CSTAT_READY)
1638 == TLAN_CSTAT_READY) {
1639 netif_stop_queue(dev);
1640 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1641 ack |= TLAN_HC_GO;
1642 } else {
1643 priv->tx_in_progress = 0;
1644 }
1645 }
1646
1647 return ack;
1648
1649 }
1650
1651
1652
1653
1654 /***************************************************************
1655 * tlan_handle_status_check
1656 *
1657 * Returns:
1658 * 0 if Adapter check, 1 if Network Status check.
1659 * Parms:
1660 * dev Device assigned the IRQ that was
1661 * raised.
1662 * host_int The contents of the HOST_INT
1663 * port.
1664 *
1665 * This function handles Adapter Check/Network Status
1666 * interrupts generated by the adapter. It checks the
1667 * vector in the HOST_INT register to determine if it is
1668 * an Adapter Check interrupt. If so, it resets the
1669 * adapter. Otherwise it clears the status registers
1670 * and services the PHY.
1671 *
1672 **************************************************************/
1673
tlan_handle_status_check(struct net_device * dev,u16 host_int)1674 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1675 {
1676 struct tlan_priv *priv = netdev_priv(dev);
1677 u32 ack;
1678 u32 error;
1679 u8 net_sts;
1680 u32 phy;
1681 u16 tlphy_ctl;
1682 u16 tlphy_sts;
1683
1684 ack = 1;
1685 if (host_int & TLAN_HI_IV_MASK) {
1686 netif_stop_queue(dev);
1687 error = inl(dev->base_addr + TLAN_CH_PARM);
1688 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1689 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1690 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1691
1692 schedule_work(&priv->tlan_tqueue);
1693
1694 netif_wake_queue(dev);
1695 ack = 0;
1696 } else {
1697 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1698 phy = priv->phy[priv->phy_num];
1699
1700 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1701 if (net_sts) {
1702 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1703 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1704 dev->name, (unsigned) net_sts);
1705 }
1706 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1707 __tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1708 __tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1709 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1710 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1711 tlphy_ctl |= TLAN_TC_SWAPOL;
1712 __tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1713 tlphy_ctl);
1714 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1715 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1716 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1717 __tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1718 tlphy_ctl);
1719 }
1720
1721 if (debug)
1722 __tlan_phy_print(dev);
1723 }
1724 }
1725
1726 return ack;
1727
1728 }
1729
1730
1731
1732
1733 /***************************************************************
1734 * tlan_handle_rx_eoc
1735 *
1736 * Returns:
1737 * 1
1738 * Parms:
1739 * dev Device assigned the IRQ that was
1740 * raised.
1741 * host_int The contents of the HOST_INT
1742 * port.
1743 *
1744 * This driver is structured to determine EOC occurrences by
1745 * reading the CSTAT member of the list structure. Rx EOC
1746 * interrupts are disabled via the DIO INTDIS register.
1747 * However, TLAN chips before revision 3.0 didn't have this
1748 * CSTAT member or a INTDIS register, so if this chip is
1749 * pre-3.0, process EOC interrupts normally.
1750 *
1751 **************************************************************/
1752
tlan_handle_rx_eoc(struct net_device * dev,u16 host_int)1753 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1754 {
1755 struct tlan_priv *priv = netdev_priv(dev);
1756 dma_addr_t head_list_phys;
1757 u32 ack = 1;
1758
1759 if (priv->tlan_rev < 0x30) {
1760 TLAN_DBG(TLAN_DEBUG_RX,
1761 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1762 priv->rx_head, priv->rx_tail);
1763 head_list_phys = priv->rx_list_dma
1764 + sizeof(struct tlan_list)*priv->rx_head;
1765 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1766 ack |= TLAN_HC_GO | TLAN_HC_RT;
1767 priv->rx_eoc_count++;
1768 }
1769
1770 return ack;
1771
1772 }
1773
1774
1775
1776
1777 /*****************************************************************************
1778 ******************************************************************************
1779
1780 ThunderLAN driver timer function
1781
1782 ******************************************************************************
1783 *****************************************************************************/
1784
1785
1786 /***************************************************************
1787 * tlan_timer
1788 *
1789 * Returns:
1790 * Nothing
1791 * Parms:
1792 * data A value given to add timer when
1793 * add_timer was called.
1794 *
1795 * This function handles timed functionality for the
1796 * TLAN driver. The two current timer uses are for
1797 * delaying for autonegotionation and driving the ACT LED.
1798 * - Autonegotiation requires being allowed about
1799 * 2 1/2 seconds before attempting to transmit a
1800 * packet. It would be a very bad thing to hang
1801 * the kernel this long, so the driver doesn't
1802 * allow transmission 'til after this time, for
1803 * certain PHYs. It would be much nicer if all
1804 * PHYs were interrupt-capable like the internal
1805 * PHY.
1806 * - The ACT LED, which shows adapter activity, is
1807 * driven by the driver, and so must be left on
1808 * for a short period to power up the LED so it
1809 * can be seen. This delay can be changed by
1810 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1811 * if desired. 100 ms produces a slightly
1812 * sluggish response.
1813 *
1814 **************************************************************/
1815
tlan_timer(struct timer_list * t)1816 static void tlan_timer(struct timer_list *t)
1817 {
1818 struct tlan_priv *priv = from_timer(priv, t, timer);
1819 struct net_device *dev = priv->dev;
1820 u32 elapsed;
1821 unsigned long flags = 0;
1822
1823 priv->timer.function = NULL;
1824
1825 switch (priv->timer_type) {
1826 case TLAN_TIMER_PHY_PDOWN:
1827 tlan_phy_power_down(dev);
1828 break;
1829 case TLAN_TIMER_PHY_PUP:
1830 tlan_phy_power_up(dev);
1831 break;
1832 case TLAN_TIMER_PHY_RESET:
1833 tlan_phy_reset(dev);
1834 break;
1835 case TLAN_TIMER_PHY_START_LINK:
1836 tlan_phy_start_link(dev);
1837 break;
1838 case TLAN_TIMER_PHY_FINISH_AN:
1839 tlan_phy_finish_auto_neg(dev);
1840 break;
1841 case TLAN_TIMER_FINISH_RESET:
1842 tlan_finish_reset(dev);
1843 break;
1844 case TLAN_TIMER_ACTIVITY:
1845 spin_lock_irqsave(&priv->lock, flags);
1846 if (priv->timer.function == NULL) {
1847 elapsed = jiffies - priv->timer_set_at;
1848 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1849 tlan_dio_write8(dev->base_addr,
1850 TLAN_LED_REG, TLAN_LED_LINK);
1851 } else {
1852 priv->timer.expires = priv->timer_set_at
1853 + TLAN_TIMER_ACT_DELAY;
1854 spin_unlock_irqrestore(&priv->lock, flags);
1855 add_timer(&priv->timer);
1856 break;
1857 }
1858 }
1859 spin_unlock_irqrestore(&priv->lock, flags);
1860 break;
1861 default:
1862 break;
1863 }
1864
1865 }
1866
1867
1868 /*****************************************************************************
1869 ******************************************************************************
1870
1871 ThunderLAN driver adapter related routines
1872
1873 ******************************************************************************
1874 *****************************************************************************/
1875
1876
1877 /***************************************************************
1878 * tlan_reset_lists
1879 *
1880 * Returns:
1881 * Nothing
1882 * Parms:
1883 * dev The device structure with the list
1884 * structures to be reset.
1885 *
1886 * This routine sets the variables associated with managing
1887 * the TLAN lists to their initial values.
1888 *
1889 **************************************************************/
1890
tlan_reset_lists(struct net_device * dev)1891 static void tlan_reset_lists(struct net_device *dev)
1892 {
1893 struct tlan_priv *priv = netdev_priv(dev);
1894 int i;
1895 struct tlan_list *list;
1896 dma_addr_t list_phys;
1897 struct sk_buff *skb;
1898
1899 priv->tx_head = 0;
1900 priv->tx_tail = 0;
1901 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1902 list = priv->tx_list + i;
1903 list->c_stat = TLAN_CSTAT_UNUSED;
1904 list->buffer[0].address = 0;
1905 list->buffer[2].count = 0;
1906 list->buffer[2].address = 0;
1907 list->buffer[8].address = 0;
1908 list->buffer[9].address = 0;
1909 }
1910
1911 priv->rx_head = 0;
1912 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1913 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1914 list = priv->rx_list + i;
1915 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1916 list->c_stat = TLAN_CSTAT_READY;
1917 list->frame_size = TLAN_MAX_FRAME_SIZE;
1918 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1919 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1920 if (!skb)
1921 break;
1922
1923 list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1924 skb->data,
1925 TLAN_MAX_FRAME_SIZE,
1926 DMA_FROM_DEVICE);
1927 tlan_store_skb(list, skb);
1928 list->buffer[1].count = 0;
1929 list->buffer[1].address = 0;
1930 list->forward = list_phys + sizeof(struct tlan_list);
1931 }
1932
1933 /* in case ran out of memory early, clear bits */
1934 while (i < TLAN_NUM_RX_LISTS) {
1935 tlan_store_skb(priv->rx_list + i, NULL);
1936 ++i;
1937 }
1938 list->forward = 0;
1939
1940 }
1941
1942
tlan_free_lists(struct net_device * dev)1943 static void tlan_free_lists(struct net_device *dev)
1944 {
1945 struct tlan_priv *priv = netdev_priv(dev);
1946 int i;
1947 struct tlan_list *list;
1948 struct sk_buff *skb;
1949
1950 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1951 list = priv->tx_list + i;
1952 skb = tlan_get_skb(list);
1953 if (skb) {
1954 dma_unmap_single(&priv->pci_dev->dev,
1955 list->buffer[0].address,
1956 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1957 DMA_TO_DEVICE);
1958 dev_kfree_skb_any(skb);
1959 list->buffer[8].address = 0;
1960 list->buffer[9].address = 0;
1961 }
1962 }
1963
1964 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1965 list = priv->rx_list + i;
1966 skb = tlan_get_skb(list);
1967 if (skb) {
1968 dma_unmap_single(&priv->pci_dev->dev,
1969 list->buffer[0].address,
1970 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1971 dev_kfree_skb_any(skb);
1972 list->buffer[8].address = 0;
1973 list->buffer[9].address = 0;
1974 }
1975 }
1976 }
1977
1978
1979
1980
1981 /***************************************************************
1982 * tlan_print_dio
1983 *
1984 * Returns:
1985 * Nothing
1986 * Parms:
1987 * io_base Base IO port of the device of
1988 * which to print DIO registers.
1989 *
1990 * This function prints out all the internal (DIO)
1991 * registers of a TLAN chip.
1992 *
1993 **************************************************************/
1994
tlan_print_dio(u16 io_base)1995 static void tlan_print_dio(u16 io_base)
1996 {
1997 u32 data0, data1;
1998 int i;
1999
2000 pr_info("Contents of internal registers for io base 0x%04hx\n",
2001 io_base);
2002 pr_info("Off. +0 +4\n");
2003 for (i = 0; i < 0x4C; i += 8) {
2004 data0 = tlan_dio_read32(io_base, i);
2005 data1 = tlan_dio_read32(io_base, i + 0x4);
2006 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2007 }
2008
2009 }
2010
2011
2012
2013
2014 /***************************************************************
2015 * TLan_PrintList
2016 *
2017 * Returns:
2018 * Nothing
2019 * Parms:
2020 * list A pointer to the struct tlan_list structure to
2021 * be printed.
2022 * type A string to designate type of list,
2023 * "Rx" or "Tx".
2024 * num The index of the list.
2025 *
2026 * This function prints out the contents of the list
2027 * pointed to by the list parameter.
2028 *
2029 **************************************************************/
2030
tlan_print_list(struct tlan_list * list,char * type,int num)2031 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2032 {
2033 int i;
2034
2035 pr_info("%s List %d at %p\n", type, num, list);
2036 pr_info(" Forward = 0x%08x\n", list->forward);
2037 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2038 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2039 /* for (i = 0; i < 10; i++) { */
2040 for (i = 0; i < 2; i++) {
2041 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2042 i, list->buffer[i].count, list->buffer[i].address);
2043 }
2044
2045 }
2046
2047
2048
2049
2050 /***************************************************************
2051 * tlan_read_and_clear_stats
2052 *
2053 * Returns:
2054 * Nothing
2055 * Parms:
2056 * dev Pointer to device structure of adapter
2057 * to which to read stats.
2058 * record Flag indicating whether to add
2059 *
2060 * This functions reads all the internal status registers
2061 * of the TLAN chip, which clears them as a side effect.
2062 * It then either adds the values to the device's status
2063 * struct, or discards them, depending on whether record
2064 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2065 *
2066 **************************************************************/
2067
tlan_read_and_clear_stats(struct net_device * dev,int record)2068 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2069 {
2070 u32 tx_good, tx_under;
2071 u32 rx_good, rx_over;
2072 u32 def_tx, crc, code;
2073 u32 multi_col, single_col;
2074 u32 excess_col, late_col, loss;
2075
2076 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2077 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2078 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2079 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2080 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2081
2082 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2083 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2084 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2085 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2086 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2087
2088 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2089 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2090 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2091 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2092 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2093
2094 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2095 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2096 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2097 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2098 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2099
2100 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2101 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2102 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2103 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2104
2105 if (record) {
2106 dev->stats.rx_packets += rx_good;
2107 dev->stats.rx_errors += rx_over + crc + code;
2108 dev->stats.tx_packets += tx_good;
2109 dev->stats.tx_errors += tx_under + loss;
2110 dev->stats.collisions += multi_col
2111 + single_col + excess_col + late_col;
2112
2113 dev->stats.rx_over_errors += rx_over;
2114 dev->stats.rx_crc_errors += crc;
2115 dev->stats.rx_frame_errors += code;
2116
2117 dev->stats.tx_aborted_errors += tx_under;
2118 dev->stats.tx_carrier_errors += loss;
2119 }
2120
2121 }
2122
2123
2124
2125
2126 /***************************************************************
2127 * TLan_Reset
2128 *
2129 * Returns:
2130 * 0
2131 * Parms:
2132 * dev Pointer to device structure of adapter
2133 * to be reset.
2134 *
2135 * This function resets the adapter and it's physical
2136 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2137 * Programmer's Guide" for details. The routine tries to
2138 * implement what is detailed there, though adjustments
2139 * have been made.
2140 *
2141 **************************************************************/
2142
2143 static void
tlan_reset_adapter(struct net_device * dev)2144 tlan_reset_adapter(struct net_device *dev)
2145 {
2146 struct tlan_priv *priv = netdev_priv(dev);
2147 int i;
2148 u32 addr;
2149 u32 data;
2150 u8 data8;
2151
2152 priv->tlan_full_duplex = false;
2153 priv->phy_online = 0;
2154 netif_carrier_off(dev);
2155
2156 /* 1. Assert reset bit. */
2157
2158 data = inl(dev->base_addr + TLAN_HOST_CMD);
2159 data |= TLAN_HC_AD_RST;
2160 outl(data, dev->base_addr + TLAN_HOST_CMD);
2161
2162 udelay(1000);
2163
2164 /* 2. Turn off interrupts. (Probably isn't necessary) */
2165
2166 data = inl(dev->base_addr + TLAN_HOST_CMD);
2167 data |= TLAN_HC_INT_OFF;
2168 outl(data, dev->base_addr + TLAN_HOST_CMD);
2169
2170 /* 3. Clear AREGs and HASHs. */
2171
2172 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2173 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2174
2175 /* 4. Setup NetConfig register. */
2176
2177 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2178 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2179
2180 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2181
2182 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2183 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2184
2185 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2186
2187 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2188 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2189 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2190
2191 /* 7. Setup the remaining registers. */
2192
2193 if (priv->tlan_rev >= 0x30) {
2194 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2195 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2196 }
2197 tlan_phy_detect(dev);
2198 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2199
2200 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2201 data |= TLAN_NET_CFG_BIT;
2202 if (priv->aui == 1) {
2203 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2204 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2205 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2206 priv->tlan_full_duplex = true;
2207 } else {
2208 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2209 }
2210 }
2211
2212 /* don't power down internal PHY if we're going to use it */
2213 if (priv->phy_num == 0 ||
2214 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2215 data |= TLAN_NET_CFG_PHY_EN;
2216 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2217
2218 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2219 tlan_finish_reset(dev);
2220 else
2221 tlan_phy_power_down(dev);
2222
2223 }
2224
2225
2226
2227
2228 static void
tlan_finish_reset(struct net_device * dev)2229 tlan_finish_reset(struct net_device *dev)
2230 {
2231 struct tlan_priv *priv = netdev_priv(dev);
2232 u8 data;
2233 u32 phy;
2234 u8 sio;
2235 u16 status;
2236 u16 partner;
2237 u16 tlphy_ctl;
2238 u16 tlphy_par;
2239 u16 tlphy_id1, tlphy_id2;
2240 int i;
2241
2242 phy = priv->phy[priv->phy_num];
2243
2244 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2245 if (priv->tlan_full_duplex)
2246 data |= TLAN_NET_CMD_DUPLEX;
2247 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2248 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2249 if (priv->phy_num == 0)
2250 data |= TLAN_NET_MASK_MASK7;
2251 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2252 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2253 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2254 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2255
2256 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2257 (priv->aui)) {
2258 status = MII_GS_LINK;
2259 netdev_info(dev, "Link forced\n");
2260 } else {
2261 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2262 udelay(1000);
2263 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2264 if (status & MII_GS_LINK) {
2265 /* We only support link info on Nat.Sem. PHY's */
2266 if ((tlphy_id1 == NAT_SEM_ID1) &&
2267 (tlphy_id2 == NAT_SEM_ID2)) {
2268 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2269 &partner);
2270 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2271 &tlphy_par);
2272
2273 netdev_info(dev,
2274 "Link active, %s %uMbps %s-Duplex\n",
2275 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2276 ? "forced" : "Autonegotiation enabled,",
2277 tlphy_par & TLAN_PHY_SPEED_100
2278 ? 100 : 10,
2279 tlphy_par & TLAN_PHY_DUPLEX_FULL
2280 ? "Full" : "Half");
2281
2282 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2283 netdev_info(dev, "Partner capability:");
2284 for (i = 5; i < 10; i++)
2285 if (partner & (1 << i))
2286 pr_cont(" %s",
2287 media[i-5]);
2288 pr_cont("\n");
2289 }
2290 } else
2291 netdev_info(dev, "Link active\n");
2292 /* Enabling link beat monitoring */
2293 priv->media_timer.expires = jiffies + HZ;
2294 add_timer(&priv->media_timer);
2295 }
2296 }
2297
2298 if (priv->phy_num == 0) {
2299 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2300 tlphy_ctl |= TLAN_TC_INTEN;
2301 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2302 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2303 sio |= TLAN_NET_SIO_MINTEN;
2304 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2305 }
2306
2307 if (status & MII_GS_LINK) {
2308 tlan_set_mac(dev, 0, dev->dev_addr);
2309 priv->phy_online = 1;
2310 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2311 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2312 outb((TLAN_HC_REQ_INT >> 8),
2313 dev->base_addr + TLAN_HOST_CMD + 1);
2314 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2315 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2316 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2317 netif_carrier_on(dev);
2318 } else {
2319 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2320 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2321 return;
2322 }
2323 tlan_set_multicast_list(dev);
2324
2325 }
2326
2327
2328
2329
2330 /***************************************************************
2331 * tlan_set_mac
2332 *
2333 * Returns:
2334 * Nothing
2335 * Parms:
2336 * dev Pointer to device structure of adapter
2337 * on which to change the AREG.
2338 * areg The AREG to set the address in (0 - 3).
2339 * mac A pointer to an array of chars. Each
2340 * element stores one byte of the address.
2341 * IE, it isn't in ascii.
2342 *
2343 * This function transfers a MAC address to one of the
2344 * TLAN AREGs (address registers). The TLAN chip locks
2345 * the register on writing to offset 0 and unlocks the
2346 * register after writing to offset 5. If NULL is passed
2347 * in mac, then the AREG is filled with 0's.
2348 *
2349 **************************************************************/
2350
tlan_set_mac(struct net_device * dev,int areg,const char * mac)2351 static void tlan_set_mac(struct net_device *dev, int areg, const char *mac)
2352 {
2353 int i;
2354
2355 areg *= 6;
2356
2357 if (mac != NULL) {
2358 for (i = 0; i < 6; i++)
2359 tlan_dio_write8(dev->base_addr,
2360 TLAN_AREG_0 + areg + i, mac[i]);
2361 } else {
2362 for (i = 0; i < 6; i++)
2363 tlan_dio_write8(dev->base_addr,
2364 TLAN_AREG_0 + areg + i, 0);
2365 }
2366
2367 }
2368
2369
2370
2371
2372 /*****************************************************************************
2373 ******************************************************************************
2374
2375 ThunderLAN driver PHY layer routines
2376
2377 ******************************************************************************
2378 *****************************************************************************/
2379
2380
2381
2382 /*********************************************************************
2383 * __tlan_phy_print
2384 *
2385 * Returns:
2386 * Nothing
2387 * Parms:
2388 * dev A pointer to the device structure of the
2389 * TLAN device having the PHYs to be detailed.
2390 *
2391 * This function prints the registers a PHY (aka transceiver).
2392 *
2393 ********************************************************************/
2394
__tlan_phy_print(struct net_device * dev)2395 static void __tlan_phy_print(struct net_device *dev)
2396 {
2397 struct tlan_priv *priv = netdev_priv(dev);
2398 u16 i, data0, data1, data2, data3, phy;
2399
2400 lockdep_assert_held(&priv->lock);
2401
2402 phy = priv->phy[priv->phy_num];
2403
2404 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2405 netdev_info(dev, "Unmanaged PHY\n");
2406 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2407 netdev_info(dev, "PHY 0x%02x\n", phy);
2408 pr_info(" Off. +0 +1 +2 +3\n");
2409 for (i = 0; i < 0x20; i += 4) {
2410 __tlan_mii_read_reg(dev, phy, i, &data0);
2411 __tlan_mii_read_reg(dev, phy, i + 1, &data1);
2412 __tlan_mii_read_reg(dev, phy, i + 2, &data2);
2413 __tlan_mii_read_reg(dev, phy, i + 3, &data3);
2414 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2415 i, data0, data1, data2, data3);
2416 }
2417 } else {
2418 netdev_info(dev, "Invalid PHY\n");
2419 }
2420
2421 }
2422
tlan_phy_print(struct net_device * dev)2423 static void tlan_phy_print(struct net_device *dev)
2424 {
2425 struct tlan_priv *priv = netdev_priv(dev);
2426 unsigned long flags;
2427
2428 spin_lock_irqsave(&priv->lock, flags);
2429 __tlan_phy_print(dev);
2430 spin_unlock_irqrestore(&priv->lock, flags);
2431 }
2432
2433
2434 /*********************************************************************
2435 * tlan_phy_detect
2436 *
2437 * Returns:
2438 * Nothing
2439 * Parms:
2440 * dev A pointer to the device structure of the adapter
2441 * for which the PHY needs determined.
2442 *
2443 * So far I've found that adapters which have external PHYs
2444 * may also use the internal PHY for part of the functionality.
2445 * (eg, AUI/Thinnet). This function finds out if this TLAN
2446 * chip has an internal PHY, and then finds the first external
2447 * PHY (starting from address 0) if it exists).
2448 *
2449 ********************************************************************/
2450
tlan_phy_detect(struct net_device * dev)2451 static void tlan_phy_detect(struct net_device *dev)
2452 {
2453 struct tlan_priv *priv = netdev_priv(dev);
2454 u16 control;
2455 u16 hi;
2456 u16 lo;
2457 u32 phy;
2458
2459 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2460 priv->phy_num = 0xffff;
2461 return;
2462 }
2463
2464 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2465
2466 if (hi != 0xffff)
2467 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2468 else
2469 priv->phy[0] = TLAN_PHY_NONE;
2470
2471 priv->phy[1] = TLAN_PHY_NONE;
2472 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2473 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2474 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2475 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2476 if ((control != 0xffff) ||
2477 (hi != 0xffff) || (lo != 0xffff)) {
2478 TLAN_DBG(TLAN_DEBUG_GNRL,
2479 "PHY found at %02x %04x %04x %04x\n",
2480 phy, control, hi, lo);
2481 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2482 (phy != TLAN_PHY_MAX_ADDR)) {
2483 priv->phy[1] = phy;
2484 }
2485 }
2486 }
2487
2488 if (priv->phy[1] != TLAN_PHY_NONE)
2489 priv->phy_num = 1;
2490 else if (priv->phy[0] != TLAN_PHY_NONE)
2491 priv->phy_num = 0;
2492 else
2493 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2494
2495 }
2496
2497
2498
2499
tlan_phy_power_down(struct net_device * dev)2500 static void tlan_phy_power_down(struct net_device *dev)
2501 {
2502 struct tlan_priv *priv = netdev_priv(dev);
2503 u16 value;
2504
2505 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2506 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2507 tlan_mii_sync(dev->base_addr);
2508 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2509 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2510 /* if using internal PHY, the external PHY must be powered on */
2511 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2512 value = MII_GC_ISOLATE; /* just isolate it from MII */
2513 tlan_mii_sync(dev->base_addr);
2514 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2515 }
2516
2517 /* Wait for 50 ms and powerup
2518 * This is arbitrary. It is intended to make sure the
2519 * transceiver settles.
2520 */
2521 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2522
2523 }
2524
2525
2526
2527
tlan_phy_power_up(struct net_device * dev)2528 static void tlan_phy_power_up(struct net_device *dev)
2529 {
2530 struct tlan_priv *priv = netdev_priv(dev);
2531 u16 value;
2532
2533 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2534 tlan_mii_sync(dev->base_addr);
2535 value = MII_GC_LOOPBK;
2536 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2537 tlan_mii_sync(dev->base_addr);
2538 /* Wait for 500 ms and reset the
2539 * transceiver. The TLAN docs say both 50 ms and
2540 * 500 ms, so do the longer, just in case.
2541 */
2542 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2543
2544 }
2545
2546
2547
2548
tlan_phy_reset(struct net_device * dev)2549 static void tlan_phy_reset(struct net_device *dev)
2550 {
2551 struct tlan_priv *priv = netdev_priv(dev);
2552 u16 phy;
2553 u16 value;
2554 unsigned long timeout = jiffies + HZ;
2555
2556 phy = priv->phy[priv->phy_num];
2557
2558 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2559 tlan_mii_sync(dev->base_addr);
2560 value = MII_GC_LOOPBK | MII_GC_RESET;
2561 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2562 do {
2563 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2564 if (time_after(jiffies, timeout)) {
2565 netdev_err(dev, "PHY reset timeout\n");
2566 return;
2567 }
2568 } while (value & MII_GC_RESET);
2569
2570 /* Wait for 500 ms and initialize.
2571 * I don't remember why I wait this long.
2572 * I've changed this to 50ms, as it seems long enough.
2573 */
2574 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2575
2576 }
2577
2578
2579
2580
tlan_phy_start_link(struct net_device * dev)2581 static void tlan_phy_start_link(struct net_device *dev)
2582 {
2583 struct tlan_priv *priv = netdev_priv(dev);
2584 u16 ability;
2585 u16 control;
2586 u16 data;
2587 u16 phy;
2588 u16 status;
2589 u16 tctl;
2590
2591 phy = priv->phy[priv->phy_num];
2592 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2593 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2594 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2595
2596 if ((status & MII_GS_AUTONEG) &&
2597 (!priv->aui)) {
2598 ability = status >> 11;
2599 if (priv->speed == TLAN_SPEED_10 &&
2600 priv->duplex == TLAN_DUPLEX_HALF) {
2601 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2602 } else if (priv->speed == TLAN_SPEED_10 &&
2603 priv->duplex == TLAN_DUPLEX_FULL) {
2604 priv->tlan_full_duplex = true;
2605 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2606 } else if (priv->speed == TLAN_SPEED_100 &&
2607 priv->duplex == TLAN_DUPLEX_HALF) {
2608 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2609 } else if (priv->speed == TLAN_SPEED_100 &&
2610 priv->duplex == TLAN_DUPLEX_FULL) {
2611 priv->tlan_full_duplex = true;
2612 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2613 } else {
2614
2615 /* Set Auto-Neg advertisement */
2616 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2617 (ability << 5) | 1);
2618 /* Enablee Auto-Neg */
2619 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2620 /* Restart Auto-Neg */
2621 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2622 /* Wait for 4 sec for autonegotiation
2623 * to complete. The max spec time is less than this
2624 * but the card need additional time to start AN.
2625 * .5 sec should be plenty extra.
2626 */
2627 netdev_info(dev, "Starting autonegotiation\n");
2628 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2629 return;
2630 }
2631
2632 }
2633
2634 if ((priv->aui) && (priv->phy_num != 0)) {
2635 priv->phy_num = 0;
2636 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2637 | TLAN_NET_CFG_PHY_EN;
2638 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2639 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2640 return;
2641 } else if (priv->phy_num == 0) {
2642 control = 0;
2643 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2644 if (priv->aui) {
2645 tctl |= TLAN_TC_AUISEL;
2646 } else {
2647 tctl &= ~TLAN_TC_AUISEL;
2648 if (priv->duplex == TLAN_DUPLEX_FULL) {
2649 control |= MII_GC_DUPLEX;
2650 priv->tlan_full_duplex = true;
2651 }
2652 if (priv->speed == TLAN_SPEED_100)
2653 control |= MII_GC_SPEEDSEL;
2654 }
2655 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2656 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2657 }
2658
2659 /* Wait for 2 sec to give the transceiver time
2660 * to establish link.
2661 */
2662 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2663
2664 }
2665
2666
2667
2668
tlan_phy_finish_auto_neg(struct net_device * dev)2669 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2670 {
2671 struct tlan_priv *priv = netdev_priv(dev);
2672 u16 an_adv;
2673 u16 an_lpa;
2674 u16 mode;
2675 u16 phy;
2676 u16 status;
2677
2678 phy = priv->phy[priv->phy_num];
2679
2680 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2681 udelay(1000);
2682 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2683
2684 if (!(status & MII_GS_AUTOCMPLT)) {
2685 /* Wait for 8 sec to give the process
2686 * more time. Perhaps we should fail after a while.
2687 */
2688 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2689 return;
2690 }
2691
2692 netdev_info(dev, "Autonegotiation complete\n");
2693 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2694 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2695 mode = an_adv & an_lpa & 0x03E0;
2696 if (mode & 0x0100)
2697 priv->tlan_full_duplex = true;
2698 else if (!(mode & 0x0080) && (mode & 0x0040))
2699 priv->tlan_full_duplex = true;
2700
2701 /* switch to internal PHY for 10 Mbps */
2702 if ((!(mode & 0x0180)) &&
2703 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2704 (priv->phy_num != 0)) {
2705 priv->phy_num = 0;
2706 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2707 return;
2708 }
2709
2710 if (priv->phy_num == 0) {
2711 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2712 (an_adv & an_lpa & 0x0040)) {
2713 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2714 MII_GC_AUTOENB | MII_GC_DUPLEX);
2715 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2716 } else {
2717 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2718 MII_GC_AUTOENB);
2719 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2720 }
2721 }
2722
2723 /* Wait for 100 ms. No reason in partiticular.
2724 */
2725 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2726
2727 }
2728
2729
2730 /*********************************************************************
2731 *
2732 * tlan_phy_monitor
2733 *
2734 * Returns:
2735 * None
2736 *
2737 * Params:
2738 * data The device structure of this device.
2739 *
2740 *
2741 * This function monitors PHY condition by reading the status
2742 * register via the MII bus, controls LINK LED and notifies the
2743 * kernel about link state.
2744 *
2745 *******************************************************************/
2746
tlan_phy_monitor(struct timer_list * t)2747 static void tlan_phy_monitor(struct timer_list *t)
2748 {
2749 struct tlan_priv *priv = from_timer(priv, t, media_timer);
2750 struct net_device *dev = priv->dev;
2751 u16 phy;
2752 u16 phy_status;
2753
2754 phy = priv->phy[priv->phy_num];
2755
2756 /* Get PHY status register */
2757 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2758
2759 /* Check if link has been lost */
2760 if (!(phy_status & MII_GS_LINK)) {
2761 if (netif_carrier_ok(dev)) {
2762 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2763 dev->name);
2764 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2765 netif_carrier_off(dev);
2766 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2767 /* power down internal PHY */
2768 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2769 MII_GC_ISOLATE;
2770
2771 tlan_mii_sync(dev->base_addr);
2772 tlan_mii_write_reg(dev, priv->phy[0],
2773 MII_GEN_CTL, data);
2774 /* set to external PHY */
2775 priv->phy_num = 1;
2776 /* restart autonegotiation */
2777 tlan_set_timer(dev, msecs_to_jiffies(400),
2778 TLAN_TIMER_PHY_PDOWN);
2779 return;
2780 }
2781 }
2782 }
2783
2784 /* Link restablished? */
2785 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2786 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2787 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2788 dev->name);
2789 netif_carrier_on(dev);
2790 }
2791 priv->media_timer.expires = jiffies + HZ;
2792 add_timer(&priv->media_timer);
2793 }
2794
2795
2796 /*****************************************************************************
2797 ******************************************************************************
2798
2799 ThunderLAN driver MII routines
2800
2801 these routines are based on the information in chap. 2 of the
2802 "ThunderLAN Programmer's Guide", pp. 15-24.
2803
2804 ******************************************************************************
2805 *****************************************************************************/
2806
2807
2808 /***************************************************************
2809 * __tlan_mii_read_reg
2810 *
2811 * Returns:
2812 * false if ack received ok
2813 * true if no ack received or other error
2814 *
2815 * Parms:
2816 * dev The device structure containing
2817 * The io address and interrupt count
2818 * for this device.
2819 * phy The address of the PHY to be queried.
2820 * reg The register whose contents are to be
2821 * retrieved.
2822 * val A pointer to a variable to store the
2823 * retrieved value.
2824 *
2825 * This function uses the TLAN's MII bus to retrieve the contents
2826 * of a given register on a PHY. It sends the appropriate info
2827 * and then reads the 16-bit register value from the MII bus via
2828 * the TLAN SIO register.
2829 *
2830 **************************************************************/
2831
2832 static bool
__tlan_mii_read_reg(struct net_device * dev,u16 phy,u16 reg,u16 * val)2833 __tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2834 {
2835 u8 nack;
2836 u16 sio, tmp;
2837 u32 i;
2838 bool err;
2839 int minten;
2840 struct tlan_priv *priv = netdev_priv(dev);
2841
2842 lockdep_assert_held(&priv->lock);
2843
2844 err = false;
2845 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2846 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2847
2848 tlan_mii_sync(dev->base_addr);
2849
2850 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2851 if (minten)
2852 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2853
2854 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2855 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2856 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2857 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2858
2859
2860 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2861
2862 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2863 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2864 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2865
2866 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2867 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2868 if (nack) { /* no ACK, so fake it */
2869 for (i = 0; i < 16; i++) {
2870 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2871 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2872 }
2873 tmp = 0xffff;
2874 err = true;
2875 } else { /* ACK, so read data */
2876 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2877 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2878 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2879 tmp |= i;
2880 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2881 }
2882 }
2883
2884
2885 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2886 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2887
2888 if (minten)
2889 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2890
2891 *val = tmp;
2892
2893 return err;
2894 }
2895
tlan_mii_read_reg(struct net_device * dev,u16 phy,u16 reg,u16 * val)2896 static void tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg,
2897 u16 *val)
2898 {
2899 struct tlan_priv *priv = netdev_priv(dev);
2900 unsigned long flags;
2901
2902 spin_lock_irqsave(&priv->lock, flags);
2903 __tlan_mii_read_reg(dev, phy, reg, val);
2904 spin_unlock_irqrestore(&priv->lock, flags);
2905 }
2906
2907 /***************************************************************
2908 * tlan_mii_send_data
2909 *
2910 * Returns:
2911 * Nothing
2912 * Parms:
2913 * base_port The base IO port of the adapter in
2914 * question.
2915 * dev The address of the PHY to be queried.
2916 * data The value to be placed on the MII bus.
2917 * num_bits The number of bits in data that are to
2918 * be placed on the MII bus.
2919 *
2920 * This function sends on sequence of bits on the MII
2921 * configuration bus.
2922 *
2923 **************************************************************/
2924
tlan_mii_send_data(u16 base_port,u32 data,unsigned num_bits)2925 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2926 {
2927 u16 sio;
2928 u32 i;
2929
2930 if (num_bits == 0)
2931 return;
2932
2933 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2934 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2935 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2936
2937 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2938 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2939 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2940 if (data & i)
2941 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2942 else
2943 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2944 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2945 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2946 }
2947
2948 }
2949
2950
2951
2952
2953 /***************************************************************
2954 * TLan_MiiSync
2955 *
2956 * Returns:
2957 * Nothing
2958 * Parms:
2959 * base_port The base IO port of the adapter in
2960 * question.
2961 *
2962 * This functions syncs all PHYs in terms of the MII configuration
2963 * bus.
2964 *
2965 **************************************************************/
2966
tlan_mii_sync(u16 base_port)2967 static void tlan_mii_sync(u16 base_port)
2968 {
2969 int i;
2970 u16 sio;
2971
2972 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2973 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2974
2975 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2976 for (i = 0; i < 32; i++) {
2977 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2978 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2979 }
2980
2981 }
2982
2983
2984
2985
2986 /***************************************************************
2987 * __tlan_mii_write_reg
2988 *
2989 * Returns:
2990 * Nothing
2991 * Parms:
2992 * dev The device structure for the device
2993 * to write to.
2994 * phy The address of the PHY to be written to.
2995 * reg The register whose contents are to be
2996 * written.
2997 * val The value to be written to the register.
2998 *
2999 * This function uses the TLAN's MII bus to write the contents of a
3000 * given register on a PHY. It sends the appropriate info and then
3001 * writes the 16-bit register value from the MII configuration bus
3002 * via the TLAN SIO register.
3003 *
3004 **************************************************************/
3005
3006 static void
__tlan_mii_write_reg(struct net_device * dev,u16 phy,u16 reg,u16 val)3007 __tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3008 {
3009 u16 sio;
3010 int minten;
3011 struct tlan_priv *priv = netdev_priv(dev);
3012
3013 lockdep_assert_held(&priv->lock);
3014
3015 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3016 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3017
3018 tlan_mii_sync(dev->base_addr);
3019
3020 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3021 if (minten)
3022 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3023
3024 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3025 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3026 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3027 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3028
3029 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3030 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3031
3032 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3033 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3034
3035 if (minten)
3036 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3037
3038 }
3039
3040 static void
tlan_mii_write_reg(struct net_device * dev,u16 phy,u16 reg,u16 val)3041 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3042 {
3043 struct tlan_priv *priv = netdev_priv(dev);
3044 unsigned long flags;
3045
3046 spin_lock_irqsave(&priv->lock, flags);
3047 __tlan_mii_write_reg(dev, phy, reg, val);
3048 spin_unlock_irqrestore(&priv->lock, flags);
3049 }
3050
3051
3052 /*****************************************************************************
3053 ******************************************************************************
3054
3055 ThunderLAN driver eeprom routines
3056
3057 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3058 EEPROM. these functions are based on information in microchip's
3059 data sheet. I don't know how well this functions will work with
3060 other Eeproms.
3061
3062 ******************************************************************************
3063 *****************************************************************************/
3064
3065
3066 /***************************************************************
3067 * tlan_ee_send_start
3068 *
3069 * Returns:
3070 * Nothing
3071 * Parms:
3072 * io_base The IO port base address for the
3073 * TLAN device with the EEPROM to
3074 * use.
3075 *
3076 * This function sends a start cycle to an EEPROM attached
3077 * to a TLAN chip.
3078 *
3079 **************************************************************/
3080
tlan_ee_send_start(u16 io_base)3081 static void tlan_ee_send_start(u16 io_base)
3082 {
3083 u16 sio;
3084
3085 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3086 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3087
3088 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3089 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3090 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3091 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3092 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3093
3094 }
3095
3096
3097
3098
3099 /***************************************************************
3100 * tlan_ee_send_byte
3101 *
3102 * Returns:
3103 * If the correct ack was received, 0, otherwise 1
3104 * Parms: io_base The IO port base address for the
3105 * TLAN device with the EEPROM to
3106 * use.
3107 * data The 8 bits of information to
3108 * send to the EEPROM.
3109 * stop If TLAN_EEPROM_STOP is passed, a
3110 * stop cycle is sent after the
3111 * byte is sent after the ack is
3112 * read.
3113 *
3114 * This function sends a byte on the serial EEPROM line,
3115 * driving the clock to send each bit. The function then
3116 * reverses transmission direction and reads an acknowledge
3117 * bit.
3118 *
3119 **************************************************************/
3120
tlan_ee_send_byte(u16 io_base,u8 data,int stop)3121 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3122 {
3123 int err;
3124 u8 place;
3125 u16 sio;
3126
3127 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3128 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3129
3130 /* Assume clock is low, tx is enabled; */
3131 for (place = 0x80; place != 0; place >>= 1) {
3132 if (place & data)
3133 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3134 else
3135 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3136 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3137 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3138 }
3139 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3140 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3141 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3142 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3143 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3144
3145 if ((!err) && stop) {
3146 /* STOP, raise data while clock is high */
3147 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3148 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3149 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3150 }
3151
3152 return err;
3153
3154 }
3155
3156
3157
3158
3159 /***************************************************************
3160 * tlan_ee_receive_byte
3161 *
3162 * Returns:
3163 * Nothing
3164 * Parms:
3165 * io_base The IO port base address for the
3166 * TLAN device with the EEPROM to
3167 * use.
3168 * data An address to a char to hold the
3169 * data sent from the EEPROM.
3170 * stop If TLAN_EEPROM_STOP is passed, a
3171 * stop cycle is sent after the
3172 * byte is received, and no ack is
3173 * sent.
3174 *
3175 * This function receives 8 bits of data from the EEPROM
3176 * over the serial link. It then sends and ack bit, or no
3177 * ack and a stop bit. This function is used to retrieve
3178 * data after the address of a byte in the EEPROM has been
3179 * sent.
3180 *
3181 **************************************************************/
3182
tlan_ee_receive_byte(u16 io_base,u8 * data,int stop)3183 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3184 {
3185 u8 place;
3186 u16 sio;
3187
3188 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3189 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3190 *data = 0;
3191
3192 /* Assume clock is low, tx is enabled; */
3193 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3194 for (place = 0x80; place; place >>= 1) {
3195 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3196 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3197 *data |= place;
3198 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3199 }
3200
3201 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3202 if (!stop) {
3203 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3204 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3205 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3206 } else {
3207 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3208 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3209 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3210 /* STOP, raise data while clock is high */
3211 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3212 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3213 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3214 }
3215
3216 }
3217
3218
3219
3220
3221 /***************************************************************
3222 * tlan_ee_read_byte
3223 *
3224 * Returns:
3225 * No error = 0, else, the stage at which the error
3226 * occurred.
3227 * Parms:
3228 * io_base The IO port base address for the
3229 * TLAN device with the EEPROM to
3230 * use.
3231 * ee_addr The address of the byte in the
3232 * EEPROM whose contents are to be
3233 * retrieved.
3234 * data An address to a char to hold the
3235 * data obtained from the EEPROM.
3236 *
3237 * This function reads a byte of information from an byte
3238 * cell in the EEPROM.
3239 *
3240 **************************************************************/
3241
tlan_ee_read_byte(struct net_device * dev,u8 ee_addr,u8 * data)3242 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3243 {
3244 int err;
3245 struct tlan_priv *priv = netdev_priv(dev);
3246 unsigned long flags = 0;
3247 int ret = 0;
3248
3249 spin_lock_irqsave(&priv->lock, flags);
3250
3251 tlan_ee_send_start(dev->base_addr);
3252 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3253 if (err) {
3254 ret = 1;
3255 goto fail;
3256 }
3257 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3258 if (err) {
3259 ret = 2;
3260 goto fail;
3261 }
3262 tlan_ee_send_start(dev->base_addr);
3263 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3264 if (err) {
3265 ret = 3;
3266 goto fail;
3267 }
3268 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3269 fail:
3270 spin_unlock_irqrestore(&priv->lock, flags);
3271
3272 return ret;
3273
3274 }
3275
3276
3277
3278