1 /*******************************************************************************
2 *
3 * Linux ThunderLAN Driver
4 *
5 * tlan.c
6 * by James Banks
7 *
8 * (C) 1997-1998 Caldera, Inc.
9 * (C) 1998 James Banks
10 * (C) 1999-2001 Torben Mathiasen
11 * (C) 2002 Samuel Chessman
12 *
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License, incorporated herein by reference.
15 *
16 ** Useful (if not required) reading:
17 *
18 * Texas Instruments, ThunderLAN Programmer's Guide,
19 * TI Literature Number SPWU013A
20 * available in PDF format from www.ti.com
21 * Level One, LXT901 and LXT970 Data Sheets
22 * available in PDF format from www.level1.com
23 * National Semiconductor, DP83840A Data Sheet
24 * available in PDF format from www.national.com
25 * Microchip Technology, 24C01A/02A/04A Data Sheet
26 * available in PDF format from www.microchip.com
27 *
28 ******************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/hardirq.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/interrupt.h>
36 #include <linux/ioport.h>
37 #include <linux/eisa.h>
38 #include <linux/pci.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/delay.h>
43 #include <linux/spinlock.h>
44 #include <linux/workqueue.h>
45 #include <linux/mii.h>
46
47 #include "tlan.h"
48
49
50 /* For removing EISA devices */
51 static struct net_device *tlan_eisa_devices;
52
53 static int tlan_devices_installed;
54
55 /* Set speed, duplex and aui settings */
56 static int aui[MAX_TLAN_BOARDS];
57 static int duplex[MAX_TLAN_BOARDS];
58 static int speed[MAX_TLAN_BOARDS];
59 static int boards_found;
60 module_param_array(aui, int, NULL, 0);
61 module_param_array(duplex, int, NULL, 0);
62 module_param_array(speed, int, NULL, 0);
63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64 MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
67
68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70 MODULE_LICENSE("GPL");
71
72 /* Turn on debugging.
73 * See Documentation/networking/device_drivers/ethernet/ti/tlan.rst for details
74 */
75 static int debug;
76 module_param(debug, int, 0);
77 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
78
79 static const char tlan_signature[] = "TLAN";
80 static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
81 static int tlan_have_pci;
82 static int tlan_have_eisa;
83
84 static const char * const media[] = {
85 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
86 "100BaseTx-FD", "100BaseT4", NULL
87 };
88
89 static struct board {
90 const char *device_label;
91 u32 flags;
92 u16 addr_ofs;
93 } board_info[] = {
94 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
95 { "Compaq Netelligent 10/100 TX PCI UTP",
96 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
97 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
98 { "Compaq NetFlex-3/P",
99 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
100 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
101 { "Compaq Netelligent Integrated 10/100 TX UTP",
102 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
103 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
104 TLAN_ADAPTER_NONE, 0x83 },
105 { "Compaq Netelligent 10/100 TX Embedded UTP",
106 TLAN_ADAPTER_NONE, 0x83 },
107 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
108 { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
109 TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
110 { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
111 TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
112 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
113 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
114 { "Compaq NetFlex-3/E",
115 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
116 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
117 { "Compaq NetFlex-3/E",
118 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
119 };
120
121 static const struct pci_device_id tlan_pci_tbl[] = {
122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
136 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
142 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
146 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
147 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
148 { 0,}
149 };
150 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
151
152 static void tlan_eisa_probe(void);
153 static void tlan_eisa_cleanup(void);
154 static int tlan_init(struct net_device *);
155 static int tlan_open(struct net_device *dev);
156 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
157 static irqreturn_t tlan_handle_interrupt(int, void *);
158 static int tlan_close(struct net_device *);
159 static struct net_device_stats *tlan_get_stats(struct net_device *);
160 static void tlan_set_multicast_list(struct net_device *);
161 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
162 static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
163 int irq, int rev, const struct pci_device_id *ent);
164 static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue);
165 static void tlan_tx_timeout_work(struct work_struct *work);
166 static int tlan_init_one(struct pci_dev *pdev,
167 const struct pci_device_id *ent);
168
169 static u32 tlan_handle_tx_eof(struct net_device *, u16);
170 static u32 tlan_handle_stat_overflow(struct net_device *, u16);
171 static u32 tlan_handle_rx_eof(struct net_device *, u16);
172 static u32 tlan_handle_dummy(struct net_device *, u16);
173 static u32 tlan_handle_tx_eoc(struct net_device *, u16);
174 static u32 tlan_handle_status_check(struct net_device *, u16);
175 static u32 tlan_handle_rx_eoc(struct net_device *, u16);
176
177 static void tlan_timer(struct timer_list *t);
178 static void tlan_phy_monitor(struct timer_list *t);
179
180 static void tlan_reset_lists(struct net_device *);
181 static void tlan_free_lists(struct net_device *);
182 static void tlan_print_dio(u16);
183 static void tlan_print_list(struct tlan_list *, char *, int);
184 static void tlan_read_and_clear_stats(struct net_device *, int);
185 static void tlan_reset_adapter(struct net_device *);
186 static void tlan_finish_reset(struct net_device *);
187 static void tlan_set_mac(struct net_device *, int areg, char *mac);
188
189 static void __tlan_phy_print(struct net_device *);
190 static void tlan_phy_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 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
766 if (priv->pci_dev)
767 strlcpy(info->bus_info, pci_name(priv->pci_dev),
768 sizeof(info->bus_info));
769 else
770 strlcpy(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
821 priv = netdev_priv(dev);
822
823 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
824 * (sizeof(struct tlan_list));
825 priv->dma_storage = dma_alloc_coherent(&priv->pci_dev->dev, dma_size,
826 &priv->dma_storage_dma, GFP_KERNEL);
827 priv->dma_size = dma_size;
828
829 if (priv->dma_storage == NULL) {
830 pr_err("Could not allocate lists and buffers for %s\n",
831 dev->name);
832 return -ENOMEM;
833 }
834 priv->rx_list = (struct tlan_list *)
835 ALIGN((unsigned long)priv->dma_storage, 8);
836 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
837 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
838 priv->tx_list_dma =
839 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
840
841 err = 0;
842 for (i = 0; i < ETH_ALEN; i++)
843 err |= tlan_ee_read_byte(dev,
844 (u8) priv->adapter->addr_ofs + i,
845 (u8 *) &dev->dev_addr[i]);
846 if (err) {
847 pr_err("%s: Error reading MAC from eeprom: %d\n",
848 dev->name, err);
849 }
850 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
851 if (priv->adapter->addr_ofs == 0xf8) {
852 for (i = 0; i < ETH_ALEN; i += 2) {
853 char tmp = dev->dev_addr[i];
854 dev->dev_addr[i] = dev->dev_addr[i + 1];
855 dev->dev_addr[i + 1] = tmp;
856 }
857 }
858
859 netif_carrier_off(dev);
860
861 /* Device methods */
862 dev->netdev_ops = &tlan_netdev_ops;
863 dev->ethtool_ops = &tlan_ethtool_ops;
864 dev->watchdog_timeo = TX_TIMEOUT;
865
866 return 0;
867
868 }
869
870
871
872
873 /***************************************************************
874 * tlan_open
875 *
876 * Returns:
877 * 0 on success, error code otherwise.
878 * Parms:
879 * dev Structure of device to be opened.
880 *
881 * This routine puts the driver and TLAN adapter in a
882 * state where it is ready to send and receive packets.
883 * It allocates the IRQ, resets and brings the adapter
884 * out of reset, and allows interrupts. It also delays
885 * the startup for autonegotiation or sends a Rx GO
886 * command to the adapter, as appropriate.
887 *
888 **************************************************************/
889
tlan_open(struct net_device * dev)890 static int tlan_open(struct net_device *dev)
891 {
892 struct tlan_priv *priv = netdev_priv(dev);
893 int err;
894
895 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
896 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
897 dev->name, dev);
898
899 if (err) {
900 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
901 dev->irq);
902 return err;
903 }
904
905 timer_setup(&priv->timer, NULL, 0);
906 timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
907
908 tlan_start(dev);
909
910 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
911 dev->name, priv->tlan_rev);
912
913 return 0;
914
915 }
916
917
918
919 /**************************************************************
920 * tlan_ioctl
921 *
922 * Returns:
923 * 0 on success, error code otherwise
924 * Params:
925 * dev structure of device to receive ioctl.
926 *
927 * rq ifreq structure to hold userspace data.
928 *
929 * cmd ioctl command.
930 *
931 *
932 *************************************************************/
933
tlan_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)934 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
935 {
936 struct tlan_priv *priv = netdev_priv(dev);
937 struct mii_ioctl_data *data = if_mii(rq);
938 u32 phy = priv->phy[priv->phy_num];
939
940 if (!priv->phy_online)
941 return -EAGAIN;
942
943 switch (cmd) {
944 case SIOCGMIIPHY: /* get address of MII PHY in use. */
945 data->phy_id = phy;
946 fallthrough;
947
948
949 case SIOCGMIIREG: /* read MII PHY register. */
950 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
951 data->reg_num & 0x1f, &data->val_out);
952 return 0;
953
954
955 case SIOCSMIIREG: /* write MII PHY register. */
956 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
957 data->reg_num & 0x1f, data->val_in);
958 return 0;
959 default:
960 return -EOPNOTSUPP;
961 }
962 }
963
964
965 /***************************************************************
966 * tlan_tx_timeout
967 *
968 * Returns: nothing
969 *
970 * Params:
971 * dev structure of device which timed out
972 * during transmit.
973 *
974 **************************************************************/
975
tlan_tx_timeout(struct net_device * dev,unsigned int txqueue)976 static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue)
977 {
978
979 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
980
981 /* Ok so we timed out, lets see what we can do about it...*/
982 tlan_free_lists(dev);
983 tlan_reset_lists(dev);
984 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
985 tlan_reset_adapter(dev);
986 netif_trans_update(dev); /* prevent tx timeout */
987 netif_wake_queue(dev);
988
989 }
990
991
992 /***************************************************************
993 * tlan_tx_timeout_work
994 *
995 * Returns: nothing
996 *
997 * Params:
998 * work work item of device which timed out
999 *
1000 **************************************************************/
1001
tlan_tx_timeout_work(struct work_struct * work)1002 static void tlan_tx_timeout_work(struct work_struct *work)
1003 {
1004 struct tlan_priv *priv =
1005 container_of(work, struct tlan_priv, tlan_tqueue);
1006
1007 tlan_tx_timeout(priv->dev, UINT_MAX);
1008 }
1009
1010
1011
1012 /***************************************************************
1013 * tlan_start_tx
1014 *
1015 * Returns:
1016 * 0 on success, non-zero on failure.
1017 * Parms:
1018 * skb A pointer to the sk_buff containing the
1019 * frame to be sent.
1020 * dev The device to send the data on.
1021 *
1022 * This function adds a frame to the Tx list to be sent
1023 * ASAP. First it verifies that the adapter is ready and
1024 * there is room in the queue. Then it sets up the next
1025 * available list, copies the frame to the corresponding
1026 * buffer. If the adapter Tx channel is idle, it gives
1027 * the adapter a Tx Go command on the list, otherwise it
1028 * sets the forward address of the previous list to point
1029 * to this one. Then it frees the sk_buff.
1030 *
1031 **************************************************************/
1032
tlan_start_tx(struct sk_buff * skb,struct net_device * dev)1033 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1034 {
1035 struct tlan_priv *priv = netdev_priv(dev);
1036 dma_addr_t tail_list_phys;
1037 struct tlan_list *tail_list;
1038 unsigned long flags;
1039 unsigned int txlen;
1040
1041 if (!priv->phy_online) {
1042 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1043 dev->name);
1044 dev_kfree_skb_any(skb);
1045 return NETDEV_TX_OK;
1046 }
1047
1048 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1049 return NETDEV_TX_OK;
1050 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1051
1052 tail_list = priv->tx_list + priv->tx_tail;
1053 tail_list_phys =
1054 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1055
1056 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1057 TLAN_DBG(TLAN_DEBUG_TX,
1058 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1059 dev->name, priv->tx_head, priv->tx_tail);
1060 netif_stop_queue(dev);
1061 priv->tx_busy_count++;
1062 return NETDEV_TX_BUSY;
1063 }
1064
1065 tail_list->forward = 0;
1066
1067 tail_list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1068 skb->data, txlen,
1069 DMA_TO_DEVICE);
1070 tlan_store_skb(tail_list, skb);
1071
1072 tail_list->frame_size = (u16) txlen;
1073 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1074 tail_list->buffer[1].count = 0;
1075 tail_list->buffer[1].address = 0;
1076
1077 spin_lock_irqsave(&priv->lock, flags);
1078 tail_list->c_stat = TLAN_CSTAT_READY;
1079 if (!priv->tx_in_progress) {
1080 priv->tx_in_progress = 1;
1081 TLAN_DBG(TLAN_DEBUG_TX,
1082 "TRANSMIT: Starting TX on buffer %d\n",
1083 priv->tx_tail);
1084 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1085 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1086 } else {
1087 TLAN_DBG(TLAN_DEBUG_TX,
1088 "TRANSMIT: Adding buffer %d to TX channel\n",
1089 priv->tx_tail);
1090 if (priv->tx_tail == 0) {
1091 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1092 = tail_list_phys;
1093 } else {
1094 (priv->tx_list + (priv->tx_tail - 1))->forward
1095 = tail_list_phys;
1096 }
1097 }
1098 spin_unlock_irqrestore(&priv->lock, flags);
1099
1100 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1101
1102 return NETDEV_TX_OK;
1103
1104 }
1105
1106
1107
1108
1109 /***************************************************************
1110 * tlan_handle_interrupt
1111 *
1112 * Returns:
1113 * Nothing
1114 * Parms:
1115 * irq The line on which the interrupt
1116 * occurred.
1117 * dev_id A pointer to the device assigned to
1118 * this irq line.
1119 *
1120 * This function handles an interrupt generated by its
1121 * assigned TLAN adapter. The function deactivates
1122 * interrupts on its adapter, records the type of
1123 * interrupt, executes the appropriate subhandler, and
1124 * acknowdges the interrupt to the adapter (thus
1125 * re-enabling adapter interrupts.
1126 *
1127 **************************************************************/
1128
tlan_handle_interrupt(int irq,void * dev_id)1129 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1130 {
1131 struct net_device *dev = dev_id;
1132 struct tlan_priv *priv = netdev_priv(dev);
1133 u16 host_int;
1134 u16 type;
1135
1136 spin_lock(&priv->lock);
1137
1138 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1139 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1140 if (type) {
1141 u32 ack;
1142 u32 host_cmd;
1143
1144 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1145 ack = tlan_int_vector[type](dev, host_int);
1146
1147 if (ack) {
1148 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1149 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1150 }
1151 }
1152
1153 spin_unlock(&priv->lock);
1154
1155 return IRQ_RETVAL(type);
1156 }
1157
1158
1159
1160
1161 /***************************************************************
1162 * tlan_close
1163 *
1164 * Returns:
1165 * An error code.
1166 * Parms:
1167 * dev The device structure of the device to
1168 * close.
1169 *
1170 * This function shuts down the adapter. It records any
1171 * stats, puts the adapter into reset state, deactivates
1172 * its time as needed, and frees the irq it is using.
1173 *
1174 **************************************************************/
1175
tlan_close(struct net_device * dev)1176 static int tlan_close(struct net_device *dev)
1177 {
1178 tlan_stop(dev);
1179
1180 free_irq(dev->irq, dev);
1181 tlan_free_lists(dev);
1182 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1183
1184 return 0;
1185
1186 }
1187
1188
1189
1190
1191 /***************************************************************
1192 * tlan_get_stats
1193 *
1194 * Returns:
1195 * A pointer to the device's statistics structure.
1196 * Parms:
1197 * dev The device structure to return the
1198 * stats for.
1199 *
1200 * This function updates the devices statistics by reading
1201 * the TLAN chip's onboard registers. Then it returns the
1202 * address of the statistics structure.
1203 *
1204 **************************************************************/
1205
tlan_get_stats(struct net_device * dev)1206 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1207 {
1208 struct tlan_priv *priv = netdev_priv(dev);
1209 int i;
1210
1211 /* Should only read stats if open ? */
1212 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1213
1214 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1215 priv->rx_eoc_count);
1216 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1217 priv->tx_busy_count);
1218 if (debug & TLAN_DEBUG_GNRL) {
1219 tlan_print_dio(dev->base_addr);
1220 tlan_phy_print(dev);
1221 }
1222 if (debug & TLAN_DEBUG_LIST) {
1223 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1224 tlan_print_list(priv->rx_list + i, "RX", i);
1225 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1226 tlan_print_list(priv->tx_list + i, "TX", i);
1227 }
1228
1229 return &dev->stats;
1230
1231 }
1232
1233
1234
1235
1236 /***************************************************************
1237 * tlan_set_multicast_list
1238 *
1239 * Returns:
1240 * Nothing
1241 * Parms:
1242 * dev The device structure to set the
1243 * multicast list for.
1244 *
1245 * This function sets the TLAN adaptor to various receive
1246 * modes. If the IFF_PROMISC flag is set, promiscuous
1247 * mode is acitviated. Otherwise, promiscuous mode is
1248 * turned off. If the IFF_ALLMULTI flag is set, then
1249 * the hash table is set to receive all group addresses.
1250 * Otherwise, the first three multicast addresses are
1251 * stored in AREG_1-3, and the rest are selected via the
1252 * hash table, as necessary.
1253 *
1254 **************************************************************/
1255
tlan_set_multicast_list(struct net_device * dev)1256 static void tlan_set_multicast_list(struct net_device *dev)
1257 {
1258 struct netdev_hw_addr *ha;
1259 u32 hash1 = 0;
1260 u32 hash2 = 0;
1261 int i;
1262 u32 offset;
1263 u8 tmp;
1264
1265 if (dev->flags & IFF_PROMISC) {
1266 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1267 tlan_dio_write8(dev->base_addr,
1268 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1269 } else {
1270 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1271 tlan_dio_write8(dev->base_addr,
1272 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1273 if (dev->flags & IFF_ALLMULTI) {
1274 for (i = 0; i < 3; i++)
1275 tlan_set_mac(dev, i + 1, NULL);
1276 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1277 0xffffffff);
1278 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1279 0xffffffff);
1280 } else {
1281 i = 0;
1282 netdev_for_each_mc_addr(ha, dev) {
1283 if (i < 3) {
1284 tlan_set_mac(dev, i + 1,
1285 (char *) &ha->addr);
1286 } else {
1287 offset =
1288 tlan_hash_func((u8 *)&ha->addr);
1289 if (offset < 32)
1290 hash1 |= (1 << offset);
1291 else
1292 hash2 |= (1 << (offset - 32));
1293 }
1294 i++;
1295 }
1296 for ( ; i < 3; i++)
1297 tlan_set_mac(dev, i + 1, NULL);
1298 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1299 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1300 }
1301 }
1302
1303 }
1304
1305
1306
1307 /*****************************************************************************
1308 ******************************************************************************
1309
1310 ThunderLAN driver interrupt vectors and table
1311
1312 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1313 Programmer's Guide" for more informations on handling interrupts
1314 generated by TLAN based adapters.
1315
1316 ******************************************************************************
1317 *****************************************************************************/
1318
1319
1320
1321
1322 /***************************************************************
1323 * tlan_handle_tx_eof
1324 *
1325 * Returns:
1326 * 1
1327 * Parms:
1328 * dev Device assigned the IRQ that was
1329 * raised.
1330 * host_int The contents of the HOST_INT
1331 * port.
1332 *
1333 * This function handles Tx EOF interrupts which are raised
1334 * by the adapter when it has completed sending the
1335 * contents of a buffer. If detemines which list/buffer
1336 * was completed and resets it. If the buffer was the last
1337 * in the channel (EOC), then the function checks to see if
1338 * another buffer is ready to send, and if so, sends a Tx
1339 * Go command. Finally, the driver activates/continues the
1340 * activity LED.
1341 *
1342 **************************************************************/
1343
tlan_handle_tx_eof(struct net_device * dev,u16 host_int)1344 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1345 {
1346 struct tlan_priv *priv = netdev_priv(dev);
1347 int eoc = 0;
1348 struct tlan_list *head_list;
1349 dma_addr_t head_list_phys;
1350 u32 ack = 0;
1351 u16 tmp_c_stat;
1352
1353 TLAN_DBG(TLAN_DEBUG_TX,
1354 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1355 priv->tx_head, priv->tx_tail);
1356 head_list = priv->tx_list + priv->tx_head;
1357
1358 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1359 && (ack < 255)) {
1360 struct sk_buff *skb = tlan_get_skb(head_list);
1361
1362 ack++;
1363 dma_unmap_single(&priv->pci_dev->dev,
1364 head_list->buffer[0].address,
1365 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1366 DMA_TO_DEVICE);
1367 dev_kfree_skb_any(skb);
1368 head_list->buffer[8].address = 0;
1369 head_list->buffer[9].address = 0;
1370
1371 if (tmp_c_stat & TLAN_CSTAT_EOC)
1372 eoc = 1;
1373
1374 dev->stats.tx_bytes += head_list->frame_size;
1375
1376 head_list->c_stat = TLAN_CSTAT_UNUSED;
1377 netif_start_queue(dev);
1378 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1379 head_list = priv->tx_list + priv->tx_head;
1380 }
1381
1382 if (!ack)
1383 netdev_info(dev,
1384 "Received interrupt for uncompleted TX frame\n");
1385
1386 if (eoc) {
1387 TLAN_DBG(TLAN_DEBUG_TX,
1388 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1389 priv->tx_head, priv->tx_tail);
1390 head_list = priv->tx_list + priv->tx_head;
1391 head_list_phys = priv->tx_list_dma
1392 + sizeof(struct tlan_list)*priv->tx_head;
1393 if ((head_list->c_stat & TLAN_CSTAT_READY)
1394 == TLAN_CSTAT_READY) {
1395 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1396 ack |= TLAN_HC_GO;
1397 } else {
1398 priv->tx_in_progress = 0;
1399 }
1400 }
1401
1402 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1403 tlan_dio_write8(dev->base_addr,
1404 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1405 if (priv->timer.function == NULL) {
1406 priv->timer.function = tlan_timer;
1407 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1408 priv->timer_set_at = jiffies;
1409 priv->timer_type = TLAN_TIMER_ACTIVITY;
1410 add_timer(&priv->timer);
1411 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1412 priv->timer_set_at = jiffies;
1413 }
1414 }
1415
1416 return ack;
1417
1418 }
1419
1420
1421
1422
1423 /***************************************************************
1424 * TLan_HandleStatOverflow
1425 *
1426 * Returns:
1427 * 1
1428 * Parms:
1429 * dev Device assigned the IRQ that was
1430 * raised.
1431 * host_int The contents of the HOST_INT
1432 * port.
1433 *
1434 * This function handles the Statistics Overflow interrupt
1435 * which means that one or more of the TLAN statistics
1436 * registers has reached 1/2 capacity and needs to be read.
1437 *
1438 **************************************************************/
1439
tlan_handle_stat_overflow(struct net_device * dev,u16 host_int)1440 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1441 {
1442 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1443
1444 return 1;
1445
1446 }
1447
1448
1449
1450
1451 /***************************************************************
1452 * TLan_HandleRxEOF
1453 *
1454 * Returns:
1455 * 1
1456 * Parms:
1457 * dev Device assigned the IRQ that was
1458 * raised.
1459 * host_int The contents of the HOST_INT
1460 * port.
1461 *
1462 * This function handles the Rx EOF interrupt which
1463 * indicates a frame has been received by the adapter from
1464 * the net and the frame has been transferred to memory.
1465 * The function determines the bounce buffer the frame has
1466 * been loaded into, creates a new sk_buff big enough to
1467 * hold the frame, and sends it to protocol stack. It
1468 * then resets the used buffer and appends it to the end
1469 * of the list. If the frame was the last in the Rx
1470 * channel (EOC), the function restarts the receive channel
1471 * by sending an Rx Go command to the adapter. Then it
1472 * activates/continues the activity LED.
1473 *
1474 **************************************************************/
1475
tlan_handle_rx_eof(struct net_device * dev,u16 host_int)1476 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1477 {
1478 struct tlan_priv *priv = netdev_priv(dev);
1479 u32 ack = 0;
1480 int eoc = 0;
1481 struct tlan_list *head_list;
1482 struct sk_buff *skb;
1483 struct tlan_list *tail_list;
1484 u16 tmp_c_stat;
1485 dma_addr_t head_list_phys;
1486
1487 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1488 priv->rx_head, priv->rx_tail);
1489 head_list = priv->rx_list + priv->rx_head;
1490 head_list_phys =
1491 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1492
1493 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1494 && (ack < 255)) {
1495 dma_addr_t frame_dma = head_list->buffer[0].address;
1496 u32 frame_size = head_list->frame_size;
1497 struct sk_buff *new_skb;
1498
1499 ack++;
1500 if (tmp_c_stat & TLAN_CSTAT_EOC)
1501 eoc = 1;
1502
1503 new_skb = netdev_alloc_skb_ip_align(dev,
1504 TLAN_MAX_FRAME_SIZE + 5);
1505 if (!new_skb)
1506 goto drop_and_reuse;
1507
1508 skb = tlan_get_skb(head_list);
1509 dma_unmap_single(&priv->pci_dev->dev, frame_dma,
1510 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1511 skb_put(skb, frame_size);
1512
1513 dev->stats.rx_bytes += frame_size;
1514
1515 skb->protocol = eth_type_trans(skb, dev);
1516 netif_rx(skb);
1517
1518 head_list->buffer[0].address =
1519 dma_map_single(&priv->pci_dev->dev, new_skb->data,
1520 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1521
1522 tlan_store_skb(head_list, new_skb);
1523 drop_and_reuse:
1524 head_list->forward = 0;
1525 head_list->c_stat = 0;
1526 tail_list = priv->rx_list + priv->rx_tail;
1527 tail_list->forward = head_list_phys;
1528
1529 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1530 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1531 head_list = priv->rx_list + priv->rx_head;
1532 head_list_phys = priv->rx_list_dma
1533 + sizeof(struct tlan_list)*priv->rx_head;
1534 }
1535
1536 if (!ack)
1537 netdev_info(dev,
1538 "Received interrupt for uncompleted RX frame\n");
1539
1540
1541 if (eoc) {
1542 TLAN_DBG(TLAN_DEBUG_RX,
1543 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1544 priv->rx_head, priv->rx_tail);
1545 head_list = priv->rx_list + priv->rx_head;
1546 head_list_phys = priv->rx_list_dma
1547 + sizeof(struct tlan_list)*priv->rx_head;
1548 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1549 ack |= TLAN_HC_GO | TLAN_HC_RT;
1550 priv->rx_eoc_count++;
1551 }
1552
1553 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1554 tlan_dio_write8(dev->base_addr,
1555 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1556 if (priv->timer.function == NULL) {
1557 priv->timer.function = tlan_timer;
1558 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1559 priv->timer_set_at = jiffies;
1560 priv->timer_type = TLAN_TIMER_ACTIVITY;
1561 add_timer(&priv->timer);
1562 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1563 priv->timer_set_at = jiffies;
1564 }
1565 }
1566
1567 return ack;
1568
1569 }
1570
1571
1572
1573
1574 /***************************************************************
1575 * tlan_handle_dummy
1576 *
1577 * Returns:
1578 * 1
1579 * Parms:
1580 * dev Device assigned the IRQ that was
1581 * raised.
1582 * host_int The contents of the HOST_INT
1583 * port.
1584 *
1585 * This function handles the Dummy interrupt, which is
1586 * raised whenever a test interrupt is generated by setting
1587 * the Req_Int bit of HOST_CMD to 1.
1588 *
1589 **************************************************************/
1590
tlan_handle_dummy(struct net_device * dev,u16 host_int)1591 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1592 {
1593 netdev_info(dev, "Test interrupt\n");
1594 return 1;
1595
1596 }
1597
1598
1599
1600
1601 /***************************************************************
1602 * tlan_handle_tx_eoc
1603 *
1604 * Returns:
1605 * 1
1606 * Parms:
1607 * dev Device assigned the IRQ that was
1608 * raised.
1609 * host_int The contents of the HOST_INT
1610 * port.
1611 *
1612 * This driver is structured to determine EOC occurrences by
1613 * reading the CSTAT member of the list structure. Tx EOC
1614 * interrupts are disabled via the DIO INTDIS register.
1615 * However, TLAN chips before revision 3.0 didn't have this
1616 * functionality, so process EOC events if this is the
1617 * case.
1618 *
1619 **************************************************************/
1620
tlan_handle_tx_eoc(struct net_device * dev,u16 host_int)1621 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1622 {
1623 struct tlan_priv *priv = netdev_priv(dev);
1624 struct tlan_list *head_list;
1625 dma_addr_t head_list_phys;
1626 u32 ack = 1;
1627
1628 if (priv->tlan_rev < 0x30) {
1629 TLAN_DBG(TLAN_DEBUG_TX,
1630 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1631 priv->tx_head, priv->tx_tail);
1632 head_list = priv->tx_list + priv->tx_head;
1633 head_list_phys = priv->tx_list_dma
1634 + sizeof(struct tlan_list)*priv->tx_head;
1635 if ((head_list->c_stat & TLAN_CSTAT_READY)
1636 == TLAN_CSTAT_READY) {
1637 netif_stop_queue(dev);
1638 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1639 ack |= TLAN_HC_GO;
1640 } else {
1641 priv->tx_in_progress = 0;
1642 }
1643 }
1644
1645 return ack;
1646
1647 }
1648
1649
1650
1651
1652 /***************************************************************
1653 * tlan_handle_status_check
1654 *
1655 * Returns:
1656 * 0 if Adapter check, 1 if Network Status check.
1657 * Parms:
1658 * dev Device assigned the IRQ that was
1659 * raised.
1660 * host_int The contents of the HOST_INT
1661 * port.
1662 *
1663 * This function handles Adapter Check/Network Status
1664 * interrupts generated by the adapter. It checks the
1665 * vector in the HOST_INT register to determine if it is
1666 * an Adapter Check interrupt. If so, it resets the
1667 * adapter. Otherwise it clears the status registers
1668 * and services the PHY.
1669 *
1670 **************************************************************/
1671
tlan_handle_status_check(struct net_device * dev,u16 host_int)1672 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1673 {
1674 struct tlan_priv *priv = netdev_priv(dev);
1675 u32 ack;
1676 u32 error;
1677 u8 net_sts;
1678 u32 phy;
1679 u16 tlphy_ctl;
1680 u16 tlphy_sts;
1681
1682 ack = 1;
1683 if (host_int & TLAN_HI_IV_MASK) {
1684 netif_stop_queue(dev);
1685 error = inl(dev->base_addr + TLAN_CH_PARM);
1686 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1687 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1688 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1689
1690 schedule_work(&priv->tlan_tqueue);
1691
1692 netif_wake_queue(dev);
1693 ack = 0;
1694 } else {
1695 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1696 phy = priv->phy[priv->phy_num];
1697
1698 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1699 if (net_sts) {
1700 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1701 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1702 dev->name, (unsigned) net_sts);
1703 }
1704 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1705 __tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1706 __tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1707 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1708 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1709 tlphy_ctl |= TLAN_TC_SWAPOL;
1710 __tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1711 tlphy_ctl);
1712 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1713 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1714 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1715 __tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1716 tlphy_ctl);
1717 }
1718
1719 if (debug)
1720 __tlan_phy_print(dev);
1721 }
1722 }
1723
1724 return ack;
1725
1726 }
1727
1728
1729
1730
1731 /***************************************************************
1732 * tlan_handle_rx_eoc
1733 *
1734 * Returns:
1735 * 1
1736 * Parms:
1737 * dev Device assigned the IRQ that was
1738 * raised.
1739 * host_int The contents of the HOST_INT
1740 * port.
1741 *
1742 * This driver is structured to determine EOC occurrences by
1743 * reading the CSTAT member of the list structure. Rx EOC
1744 * interrupts are disabled via the DIO INTDIS register.
1745 * However, TLAN chips before revision 3.0 didn't have this
1746 * CSTAT member or a INTDIS register, so if this chip is
1747 * pre-3.0, process EOC interrupts normally.
1748 *
1749 **************************************************************/
1750
tlan_handle_rx_eoc(struct net_device * dev,u16 host_int)1751 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1752 {
1753 struct tlan_priv *priv = netdev_priv(dev);
1754 dma_addr_t head_list_phys;
1755 u32 ack = 1;
1756
1757 if (priv->tlan_rev < 0x30) {
1758 TLAN_DBG(TLAN_DEBUG_RX,
1759 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1760 priv->rx_head, priv->rx_tail);
1761 head_list_phys = priv->rx_list_dma
1762 + sizeof(struct tlan_list)*priv->rx_head;
1763 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1764 ack |= TLAN_HC_GO | TLAN_HC_RT;
1765 priv->rx_eoc_count++;
1766 }
1767
1768 return ack;
1769
1770 }
1771
1772
1773
1774
1775 /*****************************************************************************
1776 ******************************************************************************
1777
1778 ThunderLAN driver timer function
1779
1780 ******************************************************************************
1781 *****************************************************************************/
1782
1783
1784 /***************************************************************
1785 * tlan_timer
1786 *
1787 * Returns:
1788 * Nothing
1789 * Parms:
1790 * data A value given to add timer when
1791 * add_timer was called.
1792 *
1793 * This function handles timed functionality for the
1794 * TLAN driver. The two current timer uses are for
1795 * delaying for autonegotionation and driving the ACT LED.
1796 * - Autonegotiation requires being allowed about
1797 * 2 1/2 seconds before attempting to transmit a
1798 * packet. It would be a very bad thing to hang
1799 * the kernel this long, so the driver doesn't
1800 * allow transmission 'til after this time, for
1801 * certain PHYs. It would be much nicer if all
1802 * PHYs were interrupt-capable like the internal
1803 * PHY.
1804 * - The ACT LED, which shows adapter activity, is
1805 * driven by the driver, and so must be left on
1806 * for a short period to power up the LED so it
1807 * can be seen. This delay can be changed by
1808 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1809 * if desired. 100 ms produces a slightly
1810 * sluggish response.
1811 *
1812 **************************************************************/
1813
tlan_timer(struct timer_list * t)1814 static void tlan_timer(struct timer_list *t)
1815 {
1816 struct tlan_priv *priv = from_timer(priv, t, timer);
1817 struct net_device *dev = priv->dev;
1818 u32 elapsed;
1819 unsigned long flags = 0;
1820
1821 priv->timer.function = NULL;
1822
1823 switch (priv->timer_type) {
1824 case TLAN_TIMER_PHY_PDOWN:
1825 tlan_phy_power_down(dev);
1826 break;
1827 case TLAN_TIMER_PHY_PUP:
1828 tlan_phy_power_up(dev);
1829 break;
1830 case TLAN_TIMER_PHY_RESET:
1831 tlan_phy_reset(dev);
1832 break;
1833 case TLAN_TIMER_PHY_START_LINK:
1834 tlan_phy_start_link(dev);
1835 break;
1836 case TLAN_TIMER_PHY_FINISH_AN:
1837 tlan_phy_finish_auto_neg(dev);
1838 break;
1839 case TLAN_TIMER_FINISH_RESET:
1840 tlan_finish_reset(dev);
1841 break;
1842 case TLAN_TIMER_ACTIVITY:
1843 spin_lock_irqsave(&priv->lock, flags);
1844 if (priv->timer.function == NULL) {
1845 elapsed = jiffies - priv->timer_set_at;
1846 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1847 tlan_dio_write8(dev->base_addr,
1848 TLAN_LED_REG, TLAN_LED_LINK);
1849 } else {
1850 priv->timer.expires = priv->timer_set_at
1851 + TLAN_TIMER_ACT_DELAY;
1852 spin_unlock_irqrestore(&priv->lock, flags);
1853 add_timer(&priv->timer);
1854 break;
1855 }
1856 }
1857 spin_unlock_irqrestore(&priv->lock, flags);
1858 break;
1859 default:
1860 break;
1861 }
1862
1863 }
1864
1865
1866 /*****************************************************************************
1867 ******************************************************************************
1868
1869 ThunderLAN driver adapter related routines
1870
1871 ******************************************************************************
1872 *****************************************************************************/
1873
1874
1875 /***************************************************************
1876 * tlan_reset_lists
1877 *
1878 * Returns:
1879 * Nothing
1880 * Parms:
1881 * dev The device structure with the list
1882 * structures to be reset.
1883 *
1884 * This routine sets the variables associated with managing
1885 * the TLAN lists to their initial values.
1886 *
1887 **************************************************************/
1888
tlan_reset_lists(struct net_device * dev)1889 static void tlan_reset_lists(struct net_device *dev)
1890 {
1891 struct tlan_priv *priv = netdev_priv(dev);
1892 int i;
1893 struct tlan_list *list;
1894 dma_addr_t list_phys;
1895 struct sk_buff *skb;
1896
1897 priv->tx_head = 0;
1898 priv->tx_tail = 0;
1899 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1900 list = priv->tx_list + i;
1901 list->c_stat = TLAN_CSTAT_UNUSED;
1902 list->buffer[0].address = 0;
1903 list->buffer[2].count = 0;
1904 list->buffer[2].address = 0;
1905 list->buffer[8].address = 0;
1906 list->buffer[9].address = 0;
1907 }
1908
1909 priv->rx_head = 0;
1910 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1911 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1912 list = priv->rx_list + i;
1913 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1914 list->c_stat = TLAN_CSTAT_READY;
1915 list->frame_size = TLAN_MAX_FRAME_SIZE;
1916 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1917 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1918 if (!skb)
1919 break;
1920
1921 list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1922 skb->data,
1923 TLAN_MAX_FRAME_SIZE,
1924 DMA_FROM_DEVICE);
1925 tlan_store_skb(list, skb);
1926 list->buffer[1].count = 0;
1927 list->buffer[1].address = 0;
1928 list->forward = list_phys + sizeof(struct tlan_list);
1929 }
1930
1931 /* in case ran out of memory early, clear bits */
1932 while (i < TLAN_NUM_RX_LISTS) {
1933 tlan_store_skb(priv->rx_list + i, NULL);
1934 ++i;
1935 }
1936 list->forward = 0;
1937
1938 }
1939
1940
tlan_free_lists(struct net_device * dev)1941 static void tlan_free_lists(struct net_device *dev)
1942 {
1943 struct tlan_priv *priv = netdev_priv(dev);
1944 int i;
1945 struct tlan_list *list;
1946 struct sk_buff *skb;
1947
1948 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1949 list = priv->tx_list + i;
1950 skb = tlan_get_skb(list);
1951 if (skb) {
1952 dma_unmap_single(&priv->pci_dev->dev,
1953 list->buffer[0].address,
1954 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1955 DMA_TO_DEVICE);
1956 dev_kfree_skb_any(skb);
1957 list->buffer[8].address = 0;
1958 list->buffer[9].address = 0;
1959 }
1960 }
1961
1962 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1963 list = priv->rx_list + i;
1964 skb = tlan_get_skb(list);
1965 if (skb) {
1966 dma_unmap_single(&priv->pci_dev->dev,
1967 list->buffer[0].address,
1968 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1969 dev_kfree_skb_any(skb);
1970 list->buffer[8].address = 0;
1971 list->buffer[9].address = 0;
1972 }
1973 }
1974 }
1975
1976
1977
1978
1979 /***************************************************************
1980 * tlan_print_dio
1981 *
1982 * Returns:
1983 * Nothing
1984 * Parms:
1985 * io_base Base IO port of the device of
1986 * which to print DIO registers.
1987 *
1988 * This function prints out all the internal (DIO)
1989 * registers of a TLAN chip.
1990 *
1991 **************************************************************/
1992
tlan_print_dio(u16 io_base)1993 static void tlan_print_dio(u16 io_base)
1994 {
1995 u32 data0, data1;
1996 int i;
1997
1998 pr_info("Contents of internal registers for io base 0x%04hx\n",
1999 io_base);
2000 pr_info("Off. +0 +4\n");
2001 for (i = 0; i < 0x4C; i += 8) {
2002 data0 = tlan_dio_read32(io_base, i);
2003 data1 = tlan_dio_read32(io_base, i + 0x4);
2004 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2005 }
2006
2007 }
2008
2009
2010
2011
2012 /***************************************************************
2013 * TLan_PrintList
2014 *
2015 * Returns:
2016 * Nothing
2017 * Parms:
2018 * list A pointer to the struct tlan_list structure to
2019 * be printed.
2020 * type A string to designate type of list,
2021 * "Rx" or "Tx".
2022 * num The index of the list.
2023 *
2024 * This function prints out the contents of the list
2025 * pointed to by the list parameter.
2026 *
2027 **************************************************************/
2028
tlan_print_list(struct tlan_list * list,char * type,int num)2029 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2030 {
2031 int i;
2032
2033 pr_info("%s List %d at %p\n", type, num, list);
2034 pr_info(" Forward = 0x%08x\n", list->forward);
2035 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2036 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2037 /* for (i = 0; i < 10; i++) { */
2038 for (i = 0; i < 2; i++) {
2039 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2040 i, list->buffer[i].count, list->buffer[i].address);
2041 }
2042
2043 }
2044
2045
2046
2047
2048 /***************************************************************
2049 * tlan_read_and_clear_stats
2050 *
2051 * Returns:
2052 * Nothing
2053 * Parms:
2054 * dev Pointer to device structure of adapter
2055 * to which to read stats.
2056 * record Flag indicating whether to add
2057 *
2058 * This functions reads all the internal status registers
2059 * of the TLAN chip, which clears them as a side effect.
2060 * It then either adds the values to the device's status
2061 * struct, or discards them, depending on whether record
2062 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2063 *
2064 **************************************************************/
2065
tlan_read_and_clear_stats(struct net_device * dev,int record)2066 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2067 {
2068 u32 tx_good, tx_under;
2069 u32 rx_good, rx_over;
2070 u32 def_tx, crc, code;
2071 u32 multi_col, single_col;
2072 u32 excess_col, late_col, loss;
2073
2074 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2075 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2076 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2077 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2078 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2079
2080 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2081 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2082 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2083 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2084 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2085
2086 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2087 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2088 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2089 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2090 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2091
2092 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2093 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2094 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2095 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2096 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2097
2098 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2099 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2100 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2101 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2102
2103 if (record) {
2104 dev->stats.rx_packets += rx_good;
2105 dev->stats.rx_errors += rx_over + crc + code;
2106 dev->stats.tx_packets += tx_good;
2107 dev->stats.tx_errors += tx_under + loss;
2108 dev->stats.collisions += multi_col
2109 + single_col + excess_col + late_col;
2110
2111 dev->stats.rx_over_errors += rx_over;
2112 dev->stats.rx_crc_errors += crc;
2113 dev->stats.rx_frame_errors += code;
2114
2115 dev->stats.tx_aborted_errors += tx_under;
2116 dev->stats.tx_carrier_errors += loss;
2117 }
2118
2119 }
2120
2121
2122
2123
2124 /***************************************************************
2125 * TLan_Reset
2126 *
2127 * Returns:
2128 * 0
2129 * Parms:
2130 * dev Pointer to device structure of adapter
2131 * to be reset.
2132 *
2133 * This function resets the adapter and it's physical
2134 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2135 * Programmer's Guide" for details. The routine tries to
2136 * implement what is detailed there, though adjustments
2137 * have been made.
2138 *
2139 **************************************************************/
2140
2141 static void
tlan_reset_adapter(struct net_device * dev)2142 tlan_reset_adapter(struct net_device *dev)
2143 {
2144 struct tlan_priv *priv = netdev_priv(dev);
2145 int i;
2146 u32 addr;
2147 u32 data;
2148 u8 data8;
2149
2150 priv->tlan_full_duplex = false;
2151 priv->phy_online = 0;
2152 netif_carrier_off(dev);
2153
2154 /* 1. Assert reset bit. */
2155
2156 data = inl(dev->base_addr + TLAN_HOST_CMD);
2157 data |= TLAN_HC_AD_RST;
2158 outl(data, dev->base_addr + TLAN_HOST_CMD);
2159
2160 udelay(1000);
2161
2162 /* 2. Turn off interrupts. (Probably isn't necessary) */
2163
2164 data = inl(dev->base_addr + TLAN_HOST_CMD);
2165 data |= TLAN_HC_INT_OFF;
2166 outl(data, dev->base_addr + TLAN_HOST_CMD);
2167
2168 /* 3. Clear AREGs and HASHs. */
2169
2170 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2171 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2172
2173 /* 4. Setup NetConfig register. */
2174
2175 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2176 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2177
2178 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2179
2180 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2181 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2182
2183 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2184
2185 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2186 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2187 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2188
2189 /* 7. Setup the remaining registers. */
2190
2191 if (priv->tlan_rev >= 0x30) {
2192 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2193 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2194 }
2195 tlan_phy_detect(dev);
2196 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2197
2198 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2199 data |= TLAN_NET_CFG_BIT;
2200 if (priv->aui == 1) {
2201 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2202 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2203 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2204 priv->tlan_full_duplex = true;
2205 } else {
2206 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2207 }
2208 }
2209
2210 /* don't power down internal PHY if we're going to use it */
2211 if (priv->phy_num == 0 ||
2212 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2213 data |= TLAN_NET_CFG_PHY_EN;
2214 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2215
2216 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2217 tlan_finish_reset(dev);
2218 else
2219 tlan_phy_power_down(dev);
2220
2221 }
2222
2223
2224
2225
2226 static void
tlan_finish_reset(struct net_device * dev)2227 tlan_finish_reset(struct net_device *dev)
2228 {
2229 struct tlan_priv *priv = netdev_priv(dev);
2230 u8 data;
2231 u32 phy;
2232 u8 sio;
2233 u16 status;
2234 u16 partner;
2235 u16 tlphy_ctl;
2236 u16 tlphy_par;
2237 u16 tlphy_id1, tlphy_id2;
2238 int i;
2239
2240 phy = priv->phy[priv->phy_num];
2241
2242 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2243 if (priv->tlan_full_duplex)
2244 data |= TLAN_NET_CMD_DUPLEX;
2245 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2246 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2247 if (priv->phy_num == 0)
2248 data |= TLAN_NET_MASK_MASK7;
2249 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2250 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2251 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2252 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2253
2254 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2255 (priv->aui)) {
2256 status = MII_GS_LINK;
2257 netdev_info(dev, "Link forced\n");
2258 } else {
2259 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2260 udelay(1000);
2261 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2262 if (status & MII_GS_LINK) {
2263 /* We only support link info on Nat.Sem. PHY's */
2264 if ((tlphy_id1 == NAT_SEM_ID1) &&
2265 (tlphy_id2 == NAT_SEM_ID2)) {
2266 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2267 &partner);
2268 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2269 &tlphy_par);
2270
2271 netdev_info(dev,
2272 "Link active, %s %uMbps %s-Duplex\n",
2273 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2274 ? "forced" : "Autonegotiation enabled,",
2275 tlphy_par & TLAN_PHY_SPEED_100
2276 ? 100 : 10,
2277 tlphy_par & TLAN_PHY_DUPLEX_FULL
2278 ? "Full" : "Half");
2279
2280 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2281 netdev_info(dev, "Partner capability:");
2282 for (i = 5; i < 10; i++)
2283 if (partner & (1 << i))
2284 pr_cont(" %s",
2285 media[i-5]);
2286 pr_cont("\n");
2287 }
2288 } else
2289 netdev_info(dev, "Link active\n");
2290 /* Enabling link beat monitoring */
2291 priv->media_timer.expires = jiffies + HZ;
2292 add_timer(&priv->media_timer);
2293 }
2294 }
2295
2296 if (priv->phy_num == 0) {
2297 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2298 tlphy_ctl |= TLAN_TC_INTEN;
2299 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2300 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2301 sio |= TLAN_NET_SIO_MINTEN;
2302 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2303 }
2304
2305 if (status & MII_GS_LINK) {
2306 tlan_set_mac(dev, 0, dev->dev_addr);
2307 priv->phy_online = 1;
2308 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2309 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2310 outb((TLAN_HC_REQ_INT >> 8),
2311 dev->base_addr + TLAN_HOST_CMD + 1);
2312 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2313 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2314 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2315 netif_carrier_on(dev);
2316 } else {
2317 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2318 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2319 return;
2320 }
2321 tlan_set_multicast_list(dev);
2322
2323 }
2324
2325
2326
2327
2328 /***************************************************************
2329 * tlan_set_mac
2330 *
2331 * Returns:
2332 * Nothing
2333 * Parms:
2334 * dev Pointer to device structure of adapter
2335 * on which to change the AREG.
2336 * areg The AREG to set the address in (0 - 3).
2337 * mac A pointer to an array of chars. Each
2338 * element stores one byte of the address.
2339 * IE, it isn't in ascii.
2340 *
2341 * This function transfers a MAC address to one of the
2342 * TLAN AREGs (address registers). The TLAN chip locks
2343 * the register on writing to offset 0 and unlocks the
2344 * register after writing to offset 5. If NULL is passed
2345 * in mac, then the AREG is filled with 0's.
2346 *
2347 **************************************************************/
2348
tlan_set_mac(struct net_device * dev,int areg,char * mac)2349 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2350 {
2351 int i;
2352
2353 areg *= 6;
2354
2355 if (mac != NULL) {
2356 for (i = 0; i < 6; i++)
2357 tlan_dio_write8(dev->base_addr,
2358 TLAN_AREG_0 + areg + i, mac[i]);
2359 } else {
2360 for (i = 0; i < 6; i++)
2361 tlan_dio_write8(dev->base_addr,
2362 TLAN_AREG_0 + areg + i, 0);
2363 }
2364
2365 }
2366
2367
2368
2369
2370 /*****************************************************************************
2371 ******************************************************************************
2372
2373 ThunderLAN driver PHY layer routines
2374
2375 ******************************************************************************
2376 *****************************************************************************/
2377
2378
2379
2380 /*********************************************************************
2381 * __tlan_phy_print
2382 *
2383 * Returns:
2384 * Nothing
2385 * Parms:
2386 * dev A pointer to the device structure of the
2387 * TLAN device having the PHYs to be detailed.
2388 *
2389 * This function prints the registers a PHY (aka transceiver).
2390 *
2391 ********************************************************************/
2392
__tlan_phy_print(struct net_device * dev)2393 static void __tlan_phy_print(struct net_device *dev)
2394 {
2395 struct tlan_priv *priv = netdev_priv(dev);
2396 u16 i, data0, data1, data2, data3, phy;
2397
2398 lockdep_assert_held(&priv->lock);
2399
2400 phy = priv->phy[priv->phy_num];
2401
2402 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2403 netdev_info(dev, "Unmanaged PHY\n");
2404 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2405 netdev_info(dev, "PHY 0x%02x\n", phy);
2406 pr_info(" Off. +0 +1 +2 +3\n");
2407 for (i = 0; i < 0x20; i += 4) {
2408 __tlan_mii_read_reg(dev, phy, i, &data0);
2409 __tlan_mii_read_reg(dev, phy, i + 1, &data1);
2410 __tlan_mii_read_reg(dev, phy, i + 2, &data2);
2411 __tlan_mii_read_reg(dev, phy, i + 3, &data3);
2412 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2413 i, data0, data1, data2, data3);
2414 }
2415 } else {
2416 netdev_info(dev, "Invalid PHY\n");
2417 }
2418
2419 }
2420
tlan_phy_print(struct net_device * dev)2421 static void tlan_phy_print(struct net_device *dev)
2422 {
2423 struct tlan_priv *priv = netdev_priv(dev);
2424 unsigned long flags;
2425
2426 spin_lock_irqsave(&priv->lock, flags);
2427 __tlan_phy_print(dev);
2428 spin_unlock_irqrestore(&priv->lock, flags);
2429 }
2430
2431
2432 /*********************************************************************
2433 * tlan_phy_detect
2434 *
2435 * Returns:
2436 * Nothing
2437 * Parms:
2438 * dev A pointer to the device structure of the adapter
2439 * for which the PHY needs determined.
2440 *
2441 * So far I've found that adapters which have external PHYs
2442 * may also use the internal PHY for part of the functionality.
2443 * (eg, AUI/Thinnet). This function finds out if this TLAN
2444 * chip has an internal PHY, and then finds the first external
2445 * PHY (starting from address 0) if it exists).
2446 *
2447 ********************************************************************/
2448
tlan_phy_detect(struct net_device * dev)2449 static void tlan_phy_detect(struct net_device *dev)
2450 {
2451 struct tlan_priv *priv = netdev_priv(dev);
2452 u16 control;
2453 u16 hi;
2454 u16 lo;
2455 u32 phy;
2456
2457 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2458 priv->phy_num = 0xffff;
2459 return;
2460 }
2461
2462 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2463
2464 if (hi != 0xffff)
2465 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2466 else
2467 priv->phy[0] = TLAN_PHY_NONE;
2468
2469 priv->phy[1] = TLAN_PHY_NONE;
2470 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2471 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2472 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2473 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2474 if ((control != 0xffff) ||
2475 (hi != 0xffff) || (lo != 0xffff)) {
2476 TLAN_DBG(TLAN_DEBUG_GNRL,
2477 "PHY found at %02x %04x %04x %04x\n",
2478 phy, control, hi, lo);
2479 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2480 (phy != TLAN_PHY_MAX_ADDR)) {
2481 priv->phy[1] = phy;
2482 }
2483 }
2484 }
2485
2486 if (priv->phy[1] != TLAN_PHY_NONE)
2487 priv->phy_num = 1;
2488 else if (priv->phy[0] != TLAN_PHY_NONE)
2489 priv->phy_num = 0;
2490 else
2491 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2492
2493 }
2494
2495
2496
2497
tlan_phy_power_down(struct net_device * dev)2498 static void tlan_phy_power_down(struct net_device *dev)
2499 {
2500 struct tlan_priv *priv = netdev_priv(dev);
2501 u16 value;
2502
2503 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2504 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2505 tlan_mii_sync(dev->base_addr);
2506 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2507 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2508 /* if using internal PHY, the external PHY must be powered on */
2509 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2510 value = MII_GC_ISOLATE; /* just isolate it from MII */
2511 tlan_mii_sync(dev->base_addr);
2512 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2513 }
2514
2515 /* Wait for 50 ms and powerup
2516 * This is arbitrary. It is intended to make sure the
2517 * transceiver settles.
2518 */
2519 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2520
2521 }
2522
2523
2524
2525
tlan_phy_power_up(struct net_device * dev)2526 static void tlan_phy_power_up(struct net_device *dev)
2527 {
2528 struct tlan_priv *priv = netdev_priv(dev);
2529 u16 value;
2530
2531 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2532 tlan_mii_sync(dev->base_addr);
2533 value = MII_GC_LOOPBK;
2534 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2535 tlan_mii_sync(dev->base_addr);
2536 /* Wait for 500 ms and reset the
2537 * transceiver. The TLAN docs say both 50 ms and
2538 * 500 ms, so do the longer, just in case.
2539 */
2540 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2541
2542 }
2543
2544
2545
2546
tlan_phy_reset(struct net_device * dev)2547 static void tlan_phy_reset(struct net_device *dev)
2548 {
2549 struct tlan_priv *priv = netdev_priv(dev);
2550 u16 phy;
2551 u16 value;
2552 unsigned long timeout = jiffies + HZ;
2553
2554 phy = priv->phy[priv->phy_num];
2555
2556 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2557 tlan_mii_sync(dev->base_addr);
2558 value = MII_GC_LOOPBK | MII_GC_RESET;
2559 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2560 do {
2561 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2562 if (time_after(jiffies, timeout)) {
2563 netdev_err(dev, "PHY reset timeout\n");
2564 return;
2565 }
2566 } while (value & MII_GC_RESET);
2567
2568 /* Wait for 500 ms and initialize.
2569 * I don't remember why I wait this long.
2570 * I've changed this to 50ms, as it seems long enough.
2571 */
2572 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2573
2574 }
2575
2576
2577
2578
tlan_phy_start_link(struct net_device * dev)2579 static void tlan_phy_start_link(struct net_device *dev)
2580 {
2581 struct tlan_priv *priv = netdev_priv(dev);
2582 u16 ability;
2583 u16 control;
2584 u16 data;
2585 u16 phy;
2586 u16 status;
2587 u16 tctl;
2588
2589 phy = priv->phy[priv->phy_num];
2590 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2591 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2592 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2593
2594 if ((status & MII_GS_AUTONEG) &&
2595 (!priv->aui)) {
2596 ability = status >> 11;
2597 if (priv->speed == TLAN_SPEED_10 &&
2598 priv->duplex == TLAN_DUPLEX_HALF) {
2599 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2600 } else if (priv->speed == TLAN_SPEED_10 &&
2601 priv->duplex == TLAN_DUPLEX_FULL) {
2602 priv->tlan_full_duplex = true;
2603 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2604 } else if (priv->speed == TLAN_SPEED_100 &&
2605 priv->duplex == TLAN_DUPLEX_HALF) {
2606 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2607 } else if (priv->speed == TLAN_SPEED_100 &&
2608 priv->duplex == TLAN_DUPLEX_FULL) {
2609 priv->tlan_full_duplex = true;
2610 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2611 } else {
2612
2613 /* Set Auto-Neg advertisement */
2614 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2615 (ability << 5) | 1);
2616 /* Enablee Auto-Neg */
2617 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2618 /* Restart Auto-Neg */
2619 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2620 /* Wait for 4 sec for autonegotiation
2621 * to complete. The max spec time is less than this
2622 * but the card need additional time to start AN.
2623 * .5 sec should be plenty extra.
2624 */
2625 netdev_info(dev, "Starting autonegotiation\n");
2626 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2627 return;
2628 }
2629
2630 }
2631
2632 if ((priv->aui) && (priv->phy_num != 0)) {
2633 priv->phy_num = 0;
2634 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2635 | TLAN_NET_CFG_PHY_EN;
2636 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2637 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2638 return;
2639 } else if (priv->phy_num == 0) {
2640 control = 0;
2641 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2642 if (priv->aui) {
2643 tctl |= TLAN_TC_AUISEL;
2644 } else {
2645 tctl &= ~TLAN_TC_AUISEL;
2646 if (priv->duplex == TLAN_DUPLEX_FULL) {
2647 control |= MII_GC_DUPLEX;
2648 priv->tlan_full_duplex = true;
2649 }
2650 if (priv->speed == TLAN_SPEED_100)
2651 control |= MII_GC_SPEEDSEL;
2652 }
2653 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2654 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2655 }
2656
2657 /* Wait for 2 sec to give the transceiver time
2658 * to establish link.
2659 */
2660 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2661
2662 }
2663
2664
2665
2666
tlan_phy_finish_auto_neg(struct net_device * dev)2667 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2668 {
2669 struct tlan_priv *priv = netdev_priv(dev);
2670 u16 an_adv;
2671 u16 an_lpa;
2672 u16 mode;
2673 u16 phy;
2674 u16 status;
2675
2676 phy = priv->phy[priv->phy_num];
2677
2678 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2679 udelay(1000);
2680 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2681
2682 if (!(status & MII_GS_AUTOCMPLT)) {
2683 /* Wait for 8 sec to give the process
2684 * more time. Perhaps we should fail after a while.
2685 */
2686 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2687 return;
2688 }
2689
2690 netdev_info(dev, "Autonegotiation complete\n");
2691 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2692 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2693 mode = an_adv & an_lpa & 0x03E0;
2694 if (mode & 0x0100)
2695 priv->tlan_full_duplex = true;
2696 else if (!(mode & 0x0080) && (mode & 0x0040))
2697 priv->tlan_full_duplex = true;
2698
2699 /* switch to internal PHY for 10 Mbps */
2700 if ((!(mode & 0x0180)) &&
2701 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2702 (priv->phy_num != 0)) {
2703 priv->phy_num = 0;
2704 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2705 return;
2706 }
2707
2708 if (priv->phy_num == 0) {
2709 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2710 (an_adv & an_lpa & 0x0040)) {
2711 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2712 MII_GC_AUTOENB | MII_GC_DUPLEX);
2713 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2714 } else {
2715 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2716 MII_GC_AUTOENB);
2717 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2718 }
2719 }
2720
2721 /* Wait for 100 ms. No reason in partiticular.
2722 */
2723 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2724
2725 }
2726
2727
2728 /*********************************************************************
2729 *
2730 * tlan_phy_monitor
2731 *
2732 * Returns:
2733 * None
2734 *
2735 * Params:
2736 * data The device structure of this device.
2737 *
2738 *
2739 * This function monitors PHY condition by reading the status
2740 * register via the MII bus, controls LINK LED and notifies the
2741 * kernel about link state.
2742 *
2743 *******************************************************************/
2744
tlan_phy_monitor(struct timer_list * t)2745 static void tlan_phy_monitor(struct timer_list *t)
2746 {
2747 struct tlan_priv *priv = from_timer(priv, t, media_timer);
2748 struct net_device *dev = priv->dev;
2749 u16 phy;
2750 u16 phy_status;
2751
2752 phy = priv->phy[priv->phy_num];
2753
2754 /* Get PHY status register */
2755 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2756
2757 /* Check if link has been lost */
2758 if (!(phy_status & MII_GS_LINK)) {
2759 if (netif_carrier_ok(dev)) {
2760 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2761 dev->name);
2762 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2763 netif_carrier_off(dev);
2764 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2765 /* power down internal PHY */
2766 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2767 MII_GC_ISOLATE;
2768
2769 tlan_mii_sync(dev->base_addr);
2770 tlan_mii_write_reg(dev, priv->phy[0],
2771 MII_GEN_CTL, data);
2772 /* set to external PHY */
2773 priv->phy_num = 1;
2774 /* restart autonegotiation */
2775 tlan_set_timer(dev, msecs_to_jiffies(400),
2776 TLAN_TIMER_PHY_PDOWN);
2777 return;
2778 }
2779 }
2780 }
2781
2782 /* Link restablished? */
2783 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2784 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2785 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2786 dev->name);
2787 netif_carrier_on(dev);
2788 }
2789 priv->media_timer.expires = jiffies + HZ;
2790 add_timer(&priv->media_timer);
2791 }
2792
2793
2794 /*****************************************************************************
2795 ******************************************************************************
2796
2797 ThunderLAN driver MII routines
2798
2799 these routines are based on the information in chap. 2 of the
2800 "ThunderLAN Programmer's Guide", pp. 15-24.
2801
2802 ******************************************************************************
2803 *****************************************************************************/
2804
2805
2806 /***************************************************************
2807 * __tlan_mii_read_reg
2808 *
2809 * Returns:
2810 * false if ack received ok
2811 * true if no ack received or other error
2812 *
2813 * Parms:
2814 * dev The device structure containing
2815 * The io address and interrupt count
2816 * for this device.
2817 * phy The address of the PHY to be queried.
2818 * reg The register whose contents are to be
2819 * retrieved.
2820 * val A pointer to a variable to store the
2821 * retrieved value.
2822 *
2823 * This function uses the TLAN's MII bus to retrieve the contents
2824 * of a given register on a PHY. It sends the appropriate info
2825 * and then reads the 16-bit register value from the MII bus via
2826 * the TLAN SIO register.
2827 *
2828 **************************************************************/
2829
2830 static bool
__tlan_mii_read_reg(struct net_device * dev,u16 phy,u16 reg,u16 * val)2831 __tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2832 {
2833 u8 nack;
2834 u16 sio, tmp;
2835 u32 i;
2836 bool err;
2837 int minten;
2838 struct tlan_priv *priv = netdev_priv(dev);
2839
2840 lockdep_assert_held(&priv->lock);
2841
2842 err = false;
2843 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2844 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2845
2846 tlan_mii_sync(dev->base_addr);
2847
2848 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2849 if (minten)
2850 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2851
2852 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2853 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2854 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2855 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2856
2857
2858 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2859
2860 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2861 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2862 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2863
2864 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2865 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2866 if (nack) { /* no ACK, so fake it */
2867 for (i = 0; i < 16; i++) {
2868 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2869 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2870 }
2871 tmp = 0xffff;
2872 err = true;
2873 } else { /* ACK, so read data */
2874 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2875 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2876 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2877 tmp |= i;
2878 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2879 }
2880 }
2881
2882
2883 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2884 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2885
2886 if (minten)
2887 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2888
2889 *val = tmp;
2890
2891 return err;
2892 }
2893
tlan_mii_read_reg(struct net_device * dev,u16 phy,u16 reg,u16 * val)2894 static void tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg,
2895 u16 *val)
2896 {
2897 struct tlan_priv *priv = netdev_priv(dev);
2898 unsigned long flags;
2899
2900 spin_lock_irqsave(&priv->lock, flags);
2901 __tlan_mii_read_reg(dev, phy, reg, val);
2902 spin_unlock_irqrestore(&priv->lock, flags);
2903 }
2904
2905 /***************************************************************
2906 * tlan_mii_send_data
2907 *
2908 * Returns:
2909 * Nothing
2910 * Parms:
2911 * base_port The base IO port of the adapter in
2912 * question.
2913 * dev The address of the PHY to be queried.
2914 * data The value to be placed on the MII bus.
2915 * num_bits The number of bits in data that are to
2916 * be placed on the MII bus.
2917 *
2918 * This function sends on sequence of bits on the MII
2919 * configuration bus.
2920 *
2921 **************************************************************/
2922
tlan_mii_send_data(u16 base_port,u32 data,unsigned num_bits)2923 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2924 {
2925 u16 sio;
2926 u32 i;
2927
2928 if (num_bits == 0)
2929 return;
2930
2931 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2932 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2933 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2934
2935 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2936 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2937 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2938 if (data & i)
2939 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2940 else
2941 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2942 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2943 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2944 }
2945
2946 }
2947
2948
2949
2950
2951 /***************************************************************
2952 * TLan_MiiSync
2953 *
2954 * Returns:
2955 * Nothing
2956 * Parms:
2957 * base_port The base IO port of the adapter in
2958 * question.
2959 *
2960 * This functions syncs all PHYs in terms of the MII configuration
2961 * bus.
2962 *
2963 **************************************************************/
2964
tlan_mii_sync(u16 base_port)2965 static void tlan_mii_sync(u16 base_port)
2966 {
2967 int i;
2968 u16 sio;
2969
2970 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2971 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2972
2973 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2974 for (i = 0; i < 32; i++) {
2975 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2976 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2977 }
2978
2979 }
2980
2981
2982
2983
2984 /***************************************************************
2985 * __tlan_mii_write_reg
2986 *
2987 * Returns:
2988 * Nothing
2989 * Parms:
2990 * dev The device structure for the device
2991 * to write to.
2992 * phy The address of the PHY to be written to.
2993 * reg The register whose contents are to be
2994 * written.
2995 * val The value to be written to the register.
2996 *
2997 * This function uses the TLAN's MII bus to write the contents of a
2998 * given register on a PHY. It sends the appropriate info and then
2999 * writes the 16-bit register value from the MII configuration bus
3000 * via the TLAN SIO register.
3001 *
3002 **************************************************************/
3003
3004 static void
__tlan_mii_write_reg(struct net_device * dev,u16 phy,u16 reg,u16 val)3005 __tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3006 {
3007 u16 sio;
3008 int minten;
3009 struct tlan_priv *priv = netdev_priv(dev);
3010
3011 lockdep_assert_held(&priv->lock);
3012
3013 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3014 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3015
3016 tlan_mii_sync(dev->base_addr);
3017
3018 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3019 if (minten)
3020 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3021
3022 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3023 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3024 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3025 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3026
3027 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3028 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3029
3030 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3031 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3032
3033 if (minten)
3034 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3035
3036 }
3037
3038 static void
tlan_mii_write_reg(struct net_device * dev,u16 phy,u16 reg,u16 val)3039 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3040 {
3041 struct tlan_priv *priv = netdev_priv(dev);
3042 unsigned long flags;
3043
3044 spin_lock_irqsave(&priv->lock, flags);
3045 __tlan_mii_write_reg(dev, phy, reg, val);
3046 spin_unlock_irqrestore(&priv->lock, flags);
3047 }
3048
3049
3050 /*****************************************************************************
3051 ******************************************************************************
3052
3053 ThunderLAN driver eeprom routines
3054
3055 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3056 EEPROM. these functions are based on information in microchip's
3057 data sheet. I don't know how well this functions will work with
3058 other Eeproms.
3059
3060 ******************************************************************************
3061 *****************************************************************************/
3062
3063
3064 /***************************************************************
3065 * tlan_ee_send_start
3066 *
3067 * Returns:
3068 * Nothing
3069 * Parms:
3070 * io_base The IO port base address for the
3071 * TLAN device with the EEPROM to
3072 * use.
3073 *
3074 * This function sends a start cycle to an EEPROM attached
3075 * to a TLAN chip.
3076 *
3077 **************************************************************/
3078
tlan_ee_send_start(u16 io_base)3079 static void tlan_ee_send_start(u16 io_base)
3080 {
3081 u16 sio;
3082
3083 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3084 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3085
3086 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3087 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3088 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3089 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3090 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3091
3092 }
3093
3094
3095
3096
3097 /***************************************************************
3098 * tlan_ee_send_byte
3099 *
3100 * Returns:
3101 * If the correct ack was received, 0, otherwise 1
3102 * Parms: io_base The IO port base address for the
3103 * TLAN device with the EEPROM to
3104 * use.
3105 * data The 8 bits of information to
3106 * send to the EEPROM.
3107 * stop If TLAN_EEPROM_STOP is passed, a
3108 * stop cycle is sent after the
3109 * byte is sent after the ack is
3110 * read.
3111 *
3112 * This function sends a byte on the serial EEPROM line,
3113 * driving the clock to send each bit. The function then
3114 * reverses transmission direction and reads an acknowledge
3115 * bit.
3116 *
3117 **************************************************************/
3118
tlan_ee_send_byte(u16 io_base,u8 data,int stop)3119 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3120 {
3121 int err;
3122 u8 place;
3123 u16 sio;
3124
3125 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3126 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3127
3128 /* Assume clock is low, tx is enabled; */
3129 for (place = 0x80; place != 0; place >>= 1) {
3130 if (place & data)
3131 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3132 else
3133 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3134 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3135 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3136 }
3137 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3138 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3139 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3140 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3141 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3142
3143 if ((!err) && stop) {
3144 /* STOP, raise data while clock is high */
3145 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3146 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3147 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3148 }
3149
3150 return err;
3151
3152 }
3153
3154
3155
3156
3157 /***************************************************************
3158 * tlan_ee_receive_byte
3159 *
3160 * Returns:
3161 * Nothing
3162 * Parms:
3163 * io_base The IO port base address for the
3164 * TLAN device with the EEPROM to
3165 * use.
3166 * data An address to a char to hold the
3167 * data sent from the EEPROM.
3168 * stop If TLAN_EEPROM_STOP is passed, a
3169 * stop cycle is sent after the
3170 * byte is received, and no ack is
3171 * sent.
3172 *
3173 * This function receives 8 bits of data from the EEPROM
3174 * over the serial link. It then sends and ack bit, or no
3175 * ack and a stop bit. This function is used to retrieve
3176 * data after the address of a byte in the EEPROM has been
3177 * sent.
3178 *
3179 **************************************************************/
3180
tlan_ee_receive_byte(u16 io_base,u8 * data,int stop)3181 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3182 {
3183 u8 place;
3184 u16 sio;
3185
3186 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3187 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3188 *data = 0;
3189
3190 /* Assume clock is low, tx is enabled; */
3191 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3192 for (place = 0x80; place; place >>= 1) {
3193 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3194 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3195 *data |= place;
3196 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3197 }
3198
3199 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3200 if (!stop) {
3201 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3202 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3203 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3204 } else {
3205 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3206 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3207 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3208 /* STOP, raise data while clock is high */
3209 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3210 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3211 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3212 }
3213
3214 }
3215
3216
3217
3218
3219 /***************************************************************
3220 * tlan_ee_read_byte
3221 *
3222 * Returns:
3223 * No error = 0, else, the stage at which the error
3224 * occurred.
3225 * Parms:
3226 * io_base The IO port base address for the
3227 * TLAN device with the EEPROM to
3228 * use.
3229 * ee_addr The address of the byte in the
3230 * EEPROM whose contents are to be
3231 * retrieved.
3232 * data An address to a char to hold the
3233 * data obtained from the EEPROM.
3234 *
3235 * This function reads a byte of information from an byte
3236 * cell in the EEPROM.
3237 *
3238 **************************************************************/
3239
tlan_ee_read_byte(struct net_device * dev,u8 ee_addr,u8 * data)3240 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3241 {
3242 int err;
3243 struct tlan_priv *priv = netdev_priv(dev);
3244 unsigned long flags = 0;
3245 int ret = 0;
3246
3247 spin_lock_irqsave(&priv->lock, flags);
3248
3249 tlan_ee_send_start(dev->base_addr);
3250 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3251 if (err) {
3252 ret = 1;
3253 goto fail;
3254 }
3255 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3256 if (err) {
3257 ret = 2;
3258 goto fail;
3259 }
3260 tlan_ee_send_start(dev->base_addr);
3261 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3262 if (err) {
3263 ret = 3;
3264 goto fail;
3265 }
3266 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3267 fail:
3268 spin_unlock_irqrestore(&priv->lock, flags);
3269
3270 return ret;
3271
3272 }
3273
3274
3275
3276
