Loading...
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 */
51static struct net_device *tlan_eisa_devices;
52
53static int tlan_devices_installed;
54
55/* Set speed, duplex and aui settings */
56static int aui[MAX_TLAN_BOARDS];
57static int duplex[MAX_TLAN_BOARDS];
58static int speed[MAX_TLAN_BOARDS];
59static int boards_found;
60module_param_array(aui, int, NULL, 0);
61module_param_array(duplex, int, NULL, 0);
62module_param_array(speed, int, NULL, 0);
63MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
67
68MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70MODULE_LICENSE("GPL");
71
72/* Turn on debugging.
73 * See Documentation/networking/device_drivers/ethernet/ti/tlan.rst for details
74 */
75static int debug;
76module_param(debug, int, 0);
77MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
78
79static const char tlan_signature[] = "TLAN";
80static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
81static int tlan_have_pci;
82static int tlan_have_eisa;
83
84static const char * const media[] = {
85 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
86 "100BaseTx-FD", "100BaseT4", NULL
87};
88
89static 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
121static 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};
150MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
151
152static void tlan_eisa_probe(void);
153static void tlan_eisa_cleanup(void);
154static int tlan_init(struct net_device *);
155static int tlan_open(struct net_device *dev);
156static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
157static irqreturn_t tlan_handle_interrupt(int, void *);
158static int tlan_close(struct net_device *);
159static struct net_device_stats *tlan_get_stats(struct net_device *);
160static void tlan_set_multicast_list(struct net_device *);
161static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
162static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
163 int irq, int rev, const struct pci_device_id *ent);
164static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue);
165static void tlan_tx_timeout_work(struct work_struct *work);
166static int tlan_init_one(struct pci_dev *pdev,
167 const struct pci_device_id *ent);
168
169static u32 tlan_handle_tx_eof(struct net_device *, u16);
170static u32 tlan_handle_stat_overflow(struct net_device *, u16);
171static u32 tlan_handle_rx_eof(struct net_device *, u16);
172static u32 tlan_handle_dummy(struct net_device *, u16);
173static u32 tlan_handle_tx_eoc(struct net_device *, u16);
174static u32 tlan_handle_status_check(struct net_device *, u16);
175static u32 tlan_handle_rx_eoc(struct net_device *, u16);
176
177static void tlan_timer(struct timer_list *t);
178static void tlan_phy_monitor(struct timer_list *t);
179
180static void tlan_reset_lists(struct net_device *);
181static void tlan_free_lists(struct net_device *);
182static void tlan_print_dio(u16);
183static void tlan_print_list(struct tlan_list *, char *, int);
184static void tlan_read_and_clear_stats(struct net_device *, int);
185static void tlan_reset_adapter(struct net_device *);
186static void tlan_finish_reset(struct net_device *);
187static void tlan_set_mac(struct net_device *, int areg, const char *mac);
188
189static void __tlan_phy_print(struct net_device *);
190static void tlan_phy_print(struct net_device *);
191static void tlan_phy_detect(struct net_device *);
192static void tlan_phy_power_down(struct net_device *);
193static void tlan_phy_power_up(struct net_device *);
194static void tlan_phy_reset(struct net_device *);
195static void tlan_phy_start_link(struct net_device *);
196static 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
205static bool __tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
206static void tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
207static void tlan_mii_send_data(u16, u32, unsigned);
208static void tlan_mii_sync(u16);
209static void __tlan_mii_write_reg(struct net_device *, u16, u16, u16);
210static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
211
212static void tlan_ee_send_start(u16);
213static int tlan_ee_send_byte(u16, u8, int);
214static void tlan_ee_receive_byte(u16, u8 *, int);
215static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
216
217
218static inline void
219tlan_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
226static inline struct sk_buff *
227tlan_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
236static 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
248static void
249tlan_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
273ThunderLAN driver primary functions
274
275these 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
300static 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
320static 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
331static 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
346static 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
358static 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
369static SIMPLE_DEV_PM_OPS(tlan_pm_ops, tlan_suspend, tlan_resume);
370
371static 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
379static 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
409err_out_pci_unreg:
410 pci_unregister_driver(&tlan_driver);
411err_out_pci_free:
412 return rc;
413}
414
415
416static 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
442static 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
584err_out_uninit:
585 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
586 priv->dma_storage, priv->dma_storage_dma);
587err_out_free_dev:
588 free_netdev(dev);
589err_out_regions:
590#ifdef CONFIG_PCI
591 if (pdev)
592 pci_release_regions(pdev);
593err_out:
594#endif
595 if (pdev)
596 pci_disable_device(pdev);
597 return rc;
598}
599
600
601static 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
623static 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 */
634module_init(tlan_probe);
635module_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
652static 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
722out:
723 if (debug == 0x10)
724 pr_info("None found\n");
725 continue;
726
727out2:
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
737static 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
745static 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
760static void tlan_get_drvinfo(struct net_device *dev,
761 struct ethtool_drvinfo *info)
762{
763 struct tlan_priv *priv = netdev_priv(dev);
764
765 strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
766 if (priv->pci_dev)
767 strscpy(info->bus_info, pci_name(priv->pci_dev),
768 sizeof(info->bus_info));
769 else
770 strscpy(info->bus_info, "EISA", sizeof(info->bus_info));
771}
772
773static int tlan_get_eeprom_len(struct net_device *dev)
774{
775 return TLAN_EEPROM_SIZE;
776}
777
778static 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
790static 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
814static int tlan_init(struct net_device *dev)
815{
816 int dma_size;
817 int err;
818 int i;
819 struct tlan_priv *priv;
820 u8 addr[ETH_ALEN];
821
822 priv = netdev_priv(dev);
823
824 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
825 * (sizeof(struct tlan_list));
826 priv->dma_storage = dma_alloc_coherent(&priv->pci_dev->dev, dma_size,
827 &priv->dma_storage_dma, GFP_KERNEL);
828 priv->dma_size = dma_size;
829
830 if (priv->dma_storage == NULL) {
831 pr_err("Could not allocate lists and buffers for %s\n",
832 dev->name);
833 return -ENOMEM;
834 }
835 priv->rx_list = (struct tlan_list *)
836 ALIGN((unsigned long)priv->dma_storage, 8);
837 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
838 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
839 priv->tx_list_dma =
840 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
841
842 err = 0;
843 for (i = 0; i < ETH_ALEN; i++)
844 err |= tlan_ee_read_byte(dev,
845 (u8) priv->adapter->addr_ofs + i,
846 addr + i);
847 if (err) {
848 pr_err("%s: Error reading MAC from eeprom: %d\n",
849 dev->name, err);
850 }
851 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
852 if (priv->adapter->addr_ofs == 0xf8) {
853 for (i = 0; i < ETH_ALEN; i += 2) {
854 char tmp = addr[i];
855 addr[i] = addr[i + 1];
856 addr[i + 1] = tmp;
857 }
858 }
859 eth_hw_addr_set(dev, addr);
860
861 netif_carrier_off(dev);
862
863 /* Device methods */
864 dev->netdev_ops = &tlan_netdev_ops;
865 dev->ethtool_ops = &tlan_ethtool_ops;
866 dev->watchdog_timeo = TX_TIMEOUT;
867
868 return 0;
869
870}
871
872
873
874
875/***************************************************************
876 * tlan_open
877 *
878 * Returns:
879 * 0 on success, error code otherwise.
880 * Parms:
881 * dev Structure of device to be opened.
882 *
883 * This routine puts the driver and TLAN adapter in a
884 * state where it is ready to send and receive packets.
885 * It allocates the IRQ, resets and brings the adapter
886 * out of reset, and allows interrupts. It also delays
887 * the startup for autonegotiation or sends a Rx GO
888 * command to the adapter, as appropriate.
889 *
890 **************************************************************/
891
892static int tlan_open(struct net_device *dev)
893{
894 struct tlan_priv *priv = netdev_priv(dev);
895 int err;
896
897 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
898 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
899 dev->name, dev);
900
901 if (err) {
902 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
903 dev->irq);
904 return err;
905 }
906
907 timer_setup(&priv->timer, NULL, 0);
908 timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
909
910 tlan_start(dev);
911
912 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
913 dev->name, priv->tlan_rev);
914
915 return 0;
916
917}
918
919
920
921/**************************************************************
922 * tlan_ioctl
923 *
924 * Returns:
925 * 0 on success, error code otherwise
926 * Params:
927 * dev structure of device to receive ioctl.
928 *
929 * rq ifreq structure to hold userspace data.
930 *
931 * cmd ioctl command.
932 *
933 *
934 *************************************************************/
935
936static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
937{
938 struct tlan_priv *priv = netdev_priv(dev);
939 struct mii_ioctl_data *data = if_mii(rq);
940 u32 phy = priv->phy[priv->phy_num];
941
942 if (!priv->phy_online)
943 return -EAGAIN;
944
945 switch (cmd) {
946 case SIOCGMIIPHY: /* get address of MII PHY in use. */
947 data->phy_id = phy;
948 fallthrough;
949
950
951 case SIOCGMIIREG: /* read MII PHY register. */
952 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
953 data->reg_num & 0x1f, &data->val_out);
954 return 0;
955
956
957 case SIOCSMIIREG: /* write MII PHY register. */
958 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
959 data->reg_num & 0x1f, data->val_in);
960 return 0;
961 default:
962 return -EOPNOTSUPP;
963 }
964}
965
966
967/***************************************************************
968 * tlan_tx_timeout
969 *
970 * Returns: nothing
971 *
972 * Params:
973 * dev structure of device which timed out
974 * during transmit.
975 *
976 **************************************************************/
977
978static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue)
979{
980
981 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
982
983 /* Ok so we timed out, lets see what we can do about it...*/
984 tlan_free_lists(dev);
985 tlan_reset_lists(dev);
986 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
987 tlan_reset_adapter(dev);
988 netif_trans_update(dev); /* prevent tx timeout */
989 netif_wake_queue(dev);
990
991}
992
993
994/***************************************************************
995 * tlan_tx_timeout_work
996 *
997 * Returns: nothing
998 *
999 * Params:
1000 * work work item of device which timed out
1001 *
1002 **************************************************************/
1003
1004static void tlan_tx_timeout_work(struct work_struct *work)
1005{
1006 struct tlan_priv *priv =
1007 container_of(work, struct tlan_priv, tlan_tqueue);
1008
1009 tlan_tx_timeout(priv->dev, UINT_MAX);
1010}
1011
1012
1013
1014/***************************************************************
1015 * tlan_start_tx
1016 *
1017 * Returns:
1018 * 0 on success, non-zero on failure.
1019 * Parms:
1020 * skb A pointer to the sk_buff containing the
1021 * frame to be sent.
1022 * dev The device to send the data on.
1023 *
1024 * This function adds a frame to the Tx list to be sent
1025 * ASAP. First it verifies that the adapter is ready and
1026 * there is room in the queue. Then it sets up the next
1027 * available list, copies the frame to the corresponding
1028 * buffer. If the adapter Tx channel is idle, it gives
1029 * the adapter a Tx Go command on the list, otherwise it
1030 * sets the forward address of the previous list to point
1031 * to this one. Then it frees the sk_buff.
1032 *
1033 **************************************************************/
1034
1035static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1036{
1037 struct tlan_priv *priv = netdev_priv(dev);
1038 dma_addr_t tail_list_phys;
1039 struct tlan_list *tail_list;
1040 unsigned long flags;
1041 unsigned int txlen;
1042
1043 if (!priv->phy_online) {
1044 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1045 dev->name);
1046 dev_kfree_skb_any(skb);
1047 return NETDEV_TX_OK;
1048 }
1049
1050 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1051 return NETDEV_TX_OK;
1052 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1053
1054 tail_list = priv->tx_list + priv->tx_tail;
1055 tail_list_phys =
1056 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1057
1058 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1059 TLAN_DBG(TLAN_DEBUG_TX,
1060 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1061 dev->name, priv->tx_head, priv->tx_tail);
1062 netif_stop_queue(dev);
1063 priv->tx_busy_count++;
1064 return NETDEV_TX_BUSY;
1065 }
1066
1067 tail_list->forward = 0;
1068
1069 tail_list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1070 skb->data, txlen,
1071 DMA_TO_DEVICE);
1072 tlan_store_skb(tail_list, skb);
1073
1074 tail_list->frame_size = (u16) txlen;
1075 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1076 tail_list->buffer[1].count = 0;
1077 tail_list->buffer[1].address = 0;
1078
1079 spin_lock_irqsave(&priv->lock, flags);
1080 tail_list->c_stat = TLAN_CSTAT_READY;
1081 if (!priv->tx_in_progress) {
1082 priv->tx_in_progress = 1;
1083 TLAN_DBG(TLAN_DEBUG_TX,
1084 "TRANSMIT: Starting TX on buffer %d\n",
1085 priv->tx_tail);
1086 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1087 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1088 } else {
1089 TLAN_DBG(TLAN_DEBUG_TX,
1090 "TRANSMIT: Adding buffer %d to TX channel\n",
1091 priv->tx_tail);
1092 if (priv->tx_tail == 0) {
1093 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1094 = tail_list_phys;
1095 } else {
1096 (priv->tx_list + (priv->tx_tail - 1))->forward
1097 = tail_list_phys;
1098 }
1099 }
1100 spin_unlock_irqrestore(&priv->lock, flags);
1101
1102 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1103
1104 return NETDEV_TX_OK;
1105
1106}
1107
1108
1109
1110
1111/***************************************************************
1112 * tlan_handle_interrupt
1113 *
1114 * Returns:
1115 * Nothing
1116 * Parms:
1117 * irq The line on which the interrupt
1118 * occurred.
1119 * dev_id A pointer to the device assigned to
1120 * this irq line.
1121 *
1122 * This function handles an interrupt generated by its
1123 * assigned TLAN adapter. The function deactivates
1124 * interrupts on its adapter, records the type of
1125 * interrupt, executes the appropriate subhandler, and
1126 * acknowdges the interrupt to the adapter (thus
1127 * re-enabling adapter interrupts.
1128 *
1129 **************************************************************/
1130
1131static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1132{
1133 struct net_device *dev = dev_id;
1134 struct tlan_priv *priv = netdev_priv(dev);
1135 u16 host_int;
1136 u16 type;
1137
1138 spin_lock(&priv->lock);
1139
1140 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1141 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1142 if (type) {
1143 u32 ack;
1144 u32 host_cmd;
1145
1146 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1147 ack = tlan_int_vector[type](dev, host_int);
1148
1149 if (ack) {
1150 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1151 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1152 }
1153 }
1154
1155 spin_unlock(&priv->lock);
1156
1157 return IRQ_RETVAL(type);
1158}
1159
1160
1161
1162
1163/***************************************************************
1164 * tlan_close
1165 *
1166 * Returns:
1167 * An error code.
1168 * Parms:
1169 * dev The device structure of the device to
1170 * close.
1171 *
1172 * This function shuts down the adapter. It records any
1173 * stats, puts the adapter into reset state, deactivates
1174 * its time as needed, and frees the irq it is using.
1175 *
1176 **************************************************************/
1177
1178static int tlan_close(struct net_device *dev)
1179{
1180 tlan_stop(dev);
1181
1182 free_irq(dev->irq, dev);
1183 tlan_free_lists(dev);
1184 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1185
1186 return 0;
1187
1188}
1189
1190
1191
1192
1193/***************************************************************
1194 * tlan_get_stats
1195 *
1196 * Returns:
1197 * A pointer to the device's statistics structure.
1198 * Parms:
1199 * dev The device structure to return the
1200 * stats for.
1201 *
1202 * This function updates the devices statistics by reading
1203 * the TLAN chip's onboard registers. Then it returns the
1204 * address of the statistics structure.
1205 *
1206 **************************************************************/
1207
1208static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1209{
1210 struct tlan_priv *priv = netdev_priv(dev);
1211 int i;
1212
1213 /* Should only read stats if open ? */
1214 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1215
1216 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1217 priv->rx_eoc_count);
1218 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1219 priv->tx_busy_count);
1220 if (debug & TLAN_DEBUG_GNRL) {
1221 tlan_print_dio(dev->base_addr);
1222 tlan_phy_print(dev);
1223 }
1224 if (debug & TLAN_DEBUG_LIST) {
1225 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1226 tlan_print_list(priv->rx_list + i, "RX", i);
1227 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1228 tlan_print_list(priv->tx_list + i, "TX", i);
1229 }
1230
1231 return &dev->stats;
1232
1233}
1234
1235
1236
1237
1238/***************************************************************
1239 * tlan_set_multicast_list
1240 *
1241 * Returns:
1242 * Nothing
1243 * Parms:
1244 * dev The device structure to set the
1245 * multicast list for.
1246 *
1247 * This function sets the TLAN adaptor to various receive
1248 * modes. If the IFF_PROMISC flag is set, promiscuous
1249 * mode is acitviated. Otherwise, promiscuous mode is
1250 * turned off. If the IFF_ALLMULTI flag is set, then
1251 * the hash table is set to receive all group addresses.
1252 * Otherwise, the first three multicast addresses are
1253 * stored in AREG_1-3, and the rest are selected via the
1254 * hash table, as necessary.
1255 *
1256 **************************************************************/
1257
1258static void tlan_set_multicast_list(struct net_device *dev)
1259{
1260 struct netdev_hw_addr *ha;
1261 u32 hash1 = 0;
1262 u32 hash2 = 0;
1263 int i;
1264 u32 offset;
1265 u8 tmp;
1266
1267 if (dev->flags & IFF_PROMISC) {
1268 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1269 tlan_dio_write8(dev->base_addr,
1270 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1271 } else {
1272 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1273 tlan_dio_write8(dev->base_addr,
1274 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1275 if (dev->flags & IFF_ALLMULTI) {
1276 for (i = 0; i < 3; i++)
1277 tlan_set_mac(dev, i + 1, NULL);
1278 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1279 0xffffffff);
1280 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1281 0xffffffff);
1282 } else {
1283 i = 0;
1284 netdev_for_each_mc_addr(ha, dev) {
1285 if (i < 3) {
1286 tlan_set_mac(dev, i + 1,
1287 (char *) &ha->addr);
1288 } else {
1289 offset =
1290 tlan_hash_func((u8 *)&ha->addr);
1291 if (offset < 32)
1292 hash1 |= (1 << offset);
1293 else
1294 hash2 |= (1 << (offset - 32));
1295 }
1296 i++;
1297 }
1298 for ( ; i < 3; i++)
1299 tlan_set_mac(dev, i + 1, NULL);
1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1301 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1302 }
1303 }
1304
1305}
1306
1307
1308
1309/*****************************************************************************
1310******************************************************************************
1311
1312ThunderLAN driver interrupt vectors and table
1313
1314please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1315Programmer's Guide" for more informations on handling interrupts
1316generated by TLAN based adapters.
1317
1318******************************************************************************
1319*****************************************************************************/
1320
1321
1322
1323
1324/***************************************************************
1325 * tlan_handle_tx_eof
1326 *
1327 * Returns:
1328 * 1
1329 * Parms:
1330 * dev Device assigned the IRQ that was
1331 * raised.
1332 * host_int The contents of the HOST_INT
1333 * port.
1334 *
1335 * This function handles Tx EOF interrupts which are raised
1336 * by the adapter when it has completed sending the
1337 * contents of a buffer. If detemines which list/buffer
1338 * was completed and resets it. If the buffer was the last
1339 * in the channel (EOC), then the function checks to see if
1340 * another buffer is ready to send, and if so, sends a Tx
1341 * Go command. Finally, the driver activates/continues the
1342 * activity LED.
1343 *
1344 **************************************************************/
1345
1346static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1347{
1348 struct tlan_priv *priv = netdev_priv(dev);
1349 int eoc = 0;
1350 struct tlan_list *head_list;
1351 dma_addr_t head_list_phys;
1352 u32 ack = 0;
1353 u16 tmp_c_stat;
1354
1355 TLAN_DBG(TLAN_DEBUG_TX,
1356 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1357 priv->tx_head, priv->tx_tail);
1358 head_list = priv->tx_list + priv->tx_head;
1359
1360 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1361 && (ack < 255)) {
1362 struct sk_buff *skb = tlan_get_skb(head_list);
1363
1364 ack++;
1365 dma_unmap_single(&priv->pci_dev->dev,
1366 head_list->buffer[0].address,
1367 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1368 DMA_TO_DEVICE);
1369 dev_kfree_skb_any(skb);
1370 head_list->buffer[8].address = 0;
1371 head_list->buffer[9].address = 0;
1372
1373 if (tmp_c_stat & TLAN_CSTAT_EOC)
1374 eoc = 1;
1375
1376 dev->stats.tx_bytes += head_list->frame_size;
1377
1378 head_list->c_stat = TLAN_CSTAT_UNUSED;
1379 netif_start_queue(dev);
1380 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1381 head_list = priv->tx_list + priv->tx_head;
1382 }
1383
1384 if (!ack)
1385 netdev_info(dev,
1386 "Received interrupt for uncompleted TX frame\n");
1387
1388 if (eoc) {
1389 TLAN_DBG(TLAN_DEBUG_TX,
1390 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1391 priv->tx_head, priv->tx_tail);
1392 head_list = priv->tx_list + priv->tx_head;
1393 head_list_phys = priv->tx_list_dma
1394 + sizeof(struct tlan_list)*priv->tx_head;
1395 if ((head_list->c_stat & TLAN_CSTAT_READY)
1396 == TLAN_CSTAT_READY) {
1397 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1398 ack |= TLAN_HC_GO;
1399 } else {
1400 priv->tx_in_progress = 0;
1401 }
1402 }
1403
1404 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1405 tlan_dio_write8(dev->base_addr,
1406 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1407 if (priv->timer.function == NULL) {
1408 priv->timer.function = tlan_timer;
1409 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1410 priv->timer_set_at = jiffies;
1411 priv->timer_type = TLAN_TIMER_ACTIVITY;
1412 add_timer(&priv->timer);
1413 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1414 priv->timer_set_at = jiffies;
1415 }
1416 }
1417
1418 return ack;
1419
1420}
1421
1422
1423
1424
1425/***************************************************************
1426 * TLan_HandleStatOverflow
1427 *
1428 * Returns:
1429 * 1
1430 * Parms:
1431 * dev Device assigned the IRQ that was
1432 * raised.
1433 * host_int The contents of the HOST_INT
1434 * port.
1435 *
1436 * This function handles the Statistics Overflow interrupt
1437 * which means that one or more of the TLAN statistics
1438 * registers has reached 1/2 capacity and needs to be read.
1439 *
1440 **************************************************************/
1441
1442static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1443{
1444 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1445
1446 return 1;
1447
1448}
1449
1450
1451
1452
1453/***************************************************************
1454 * TLan_HandleRxEOF
1455 *
1456 * Returns:
1457 * 1
1458 * Parms:
1459 * dev Device assigned the IRQ that was
1460 * raised.
1461 * host_int The contents of the HOST_INT
1462 * port.
1463 *
1464 * This function handles the Rx EOF interrupt which
1465 * indicates a frame has been received by the adapter from
1466 * the net and the frame has been transferred to memory.
1467 * The function determines the bounce buffer the frame has
1468 * been loaded into, creates a new sk_buff big enough to
1469 * hold the frame, and sends it to protocol stack. It
1470 * then resets the used buffer and appends it to the end
1471 * of the list. If the frame was the last in the Rx
1472 * channel (EOC), the function restarts the receive channel
1473 * by sending an Rx Go command to the adapter. Then it
1474 * activates/continues the activity LED.
1475 *
1476 **************************************************************/
1477
1478static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1479{
1480 struct tlan_priv *priv = netdev_priv(dev);
1481 u32 ack = 0;
1482 int eoc = 0;
1483 struct tlan_list *head_list;
1484 struct sk_buff *skb;
1485 struct tlan_list *tail_list;
1486 u16 tmp_c_stat;
1487 dma_addr_t head_list_phys;
1488
1489 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1490 priv->rx_head, priv->rx_tail);
1491 head_list = priv->rx_list + priv->rx_head;
1492 head_list_phys =
1493 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1494
1495 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1496 && (ack < 255)) {
1497 dma_addr_t frame_dma = head_list->buffer[0].address;
1498 u32 frame_size = head_list->frame_size;
1499 struct sk_buff *new_skb;
1500
1501 ack++;
1502 if (tmp_c_stat & TLAN_CSTAT_EOC)
1503 eoc = 1;
1504
1505 new_skb = netdev_alloc_skb_ip_align(dev,
1506 TLAN_MAX_FRAME_SIZE + 5);
1507 if (!new_skb)
1508 goto drop_and_reuse;
1509
1510 skb = tlan_get_skb(head_list);
1511 dma_unmap_single(&priv->pci_dev->dev, frame_dma,
1512 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1513 skb_put(skb, frame_size);
1514
1515 dev->stats.rx_bytes += frame_size;
1516
1517 skb->protocol = eth_type_trans(skb, dev);
1518 netif_rx(skb);
1519
1520 head_list->buffer[0].address =
1521 dma_map_single(&priv->pci_dev->dev, new_skb->data,
1522 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1523
1524 tlan_store_skb(head_list, new_skb);
1525drop_and_reuse:
1526 head_list->forward = 0;
1527 head_list->c_stat = 0;
1528 tail_list = priv->rx_list + priv->rx_tail;
1529 tail_list->forward = head_list_phys;
1530
1531 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1532 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1533 head_list = priv->rx_list + priv->rx_head;
1534 head_list_phys = priv->rx_list_dma
1535 + sizeof(struct tlan_list)*priv->rx_head;
1536 }
1537
1538 if (!ack)
1539 netdev_info(dev,
1540 "Received interrupt for uncompleted RX frame\n");
1541
1542
1543 if (eoc) {
1544 TLAN_DBG(TLAN_DEBUG_RX,
1545 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1546 priv->rx_head, priv->rx_tail);
1547 head_list = priv->rx_list + priv->rx_head;
1548 head_list_phys = priv->rx_list_dma
1549 + sizeof(struct tlan_list)*priv->rx_head;
1550 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1551 ack |= TLAN_HC_GO | TLAN_HC_RT;
1552 priv->rx_eoc_count++;
1553 }
1554
1555 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1556 tlan_dio_write8(dev->base_addr,
1557 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1558 if (priv->timer.function == NULL) {
1559 priv->timer.function = tlan_timer;
1560 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1561 priv->timer_set_at = jiffies;
1562 priv->timer_type = TLAN_TIMER_ACTIVITY;
1563 add_timer(&priv->timer);
1564 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1565 priv->timer_set_at = jiffies;
1566 }
1567 }
1568
1569 return ack;
1570
1571}
1572
1573
1574
1575
1576/***************************************************************
1577 * tlan_handle_dummy
1578 *
1579 * Returns:
1580 * 1
1581 * Parms:
1582 * dev Device assigned the IRQ that was
1583 * raised.
1584 * host_int The contents of the HOST_INT
1585 * port.
1586 *
1587 * This function handles the Dummy interrupt, which is
1588 * raised whenever a test interrupt is generated by setting
1589 * the Req_Int bit of HOST_CMD to 1.
1590 *
1591 **************************************************************/
1592
1593static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1594{
1595 netdev_info(dev, "Test interrupt\n");
1596 return 1;
1597
1598}
1599
1600
1601
1602
1603/***************************************************************
1604 * tlan_handle_tx_eoc
1605 *
1606 * Returns:
1607 * 1
1608 * Parms:
1609 * dev Device assigned the IRQ that was
1610 * raised.
1611 * host_int The contents of the HOST_INT
1612 * port.
1613 *
1614 * This driver is structured to determine EOC occurrences by
1615 * reading the CSTAT member of the list structure. Tx EOC
1616 * interrupts are disabled via the DIO INTDIS register.
1617 * However, TLAN chips before revision 3.0 didn't have this
1618 * functionality, so process EOC events if this is the
1619 * case.
1620 *
1621 **************************************************************/
1622
1623static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1624{
1625 struct tlan_priv *priv = netdev_priv(dev);
1626 struct tlan_list *head_list;
1627 dma_addr_t head_list_phys;
1628 u32 ack = 1;
1629
1630 if (priv->tlan_rev < 0x30) {
1631 TLAN_DBG(TLAN_DEBUG_TX,
1632 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1633 priv->tx_head, priv->tx_tail);
1634 head_list = priv->tx_list + priv->tx_head;
1635 head_list_phys = priv->tx_list_dma
1636 + sizeof(struct tlan_list)*priv->tx_head;
1637 if ((head_list->c_stat & TLAN_CSTAT_READY)
1638 == TLAN_CSTAT_READY) {
1639 netif_stop_queue(dev);
1640 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1641 ack |= TLAN_HC_GO;
1642 } else {
1643 priv->tx_in_progress = 0;
1644 }
1645 }
1646
1647 return ack;
1648
1649}
1650
1651
1652
1653
1654/***************************************************************
1655 * tlan_handle_status_check
1656 *
1657 * Returns:
1658 * 0 if Adapter check, 1 if Network Status check.
1659 * Parms:
1660 * dev Device assigned the IRQ that was
1661 * raised.
1662 * host_int The contents of the HOST_INT
1663 * port.
1664 *
1665 * This function handles Adapter Check/Network Status
1666 * interrupts generated by the adapter. It checks the
1667 * vector in the HOST_INT register to determine if it is
1668 * an Adapter Check interrupt. If so, it resets the
1669 * adapter. Otherwise it clears the status registers
1670 * and services the PHY.
1671 *
1672 **************************************************************/
1673
1674static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1675{
1676 struct tlan_priv *priv = netdev_priv(dev);
1677 u32 ack;
1678 u32 error;
1679 u8 net_sts;
1680 u32 phy;
1681 u16 tlphy_ctl;
1682 u16 tlphy_sts;
1683
1684 ack = 1;
1685 if (host_int & TLAN_HI_IV_MASK) {
1686 netif_stop_queue(dev);
1687 error = inl(dev->base_addr + TLAN_CH_PARM);
1688 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1689 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1690 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1691
1692 schedule_work(&priv->tlan_tqueue);
1693
1694 netif_wake_queue(dev);
1695 ack = 0;
1696 } else {
1697 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1698 phy = priv->phy[priv->phy_num];
1699
1700 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1701 if (net_sts) {
1702 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1703 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1704 dev->name, (unsigned) net_sts);
1705 }
1706 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1707 __tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1708 __tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1709 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1710 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1711 tlphy_ctl |= TLAN_TC_SWAPOL;
1712 __tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1713 tlphy_ctl);
1714 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1715 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1716 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1717 __tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1718 tlphy_ctl);
1719 }
1720
1721 if (debug)
1722 __tlan_phy_print(dev);
1723 }
1724 }
1725
1726 return ack;
1727
1728}
1729
1730
1731
1732
1733/***************************************************************
1734 * tlan_handle_rx_eoc
1735 *
1736 * Returns:
1737 * 1
1738 * Parms:
1739 * dev Device assigned the IRQ that was
1740 * raised.
1741 * host_int The contents of the HOST_INT
1742 * port.
1743 *
1744 * This driver is structured to determine EOC occurrences by
1745 * reading the CSTAT member of the list structure. Rx EOC
1746 * interrupts are disabled via the DIO INTDIS register.
1747 * However, TLAN chips before revision 3.0 didn't have this
1748 * CSTAT member or a INTDIS register, so if this chip is
1749 * pre-3.0, process EOC interrupts normally.
1750 *
1751 **************************************************************/
1752
1753static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1754{
1755 struct tlan_priv *priv = netdev_priv(dev);
1756 dma_addr_t head_list_phys;
1757 u32 ack = 1;
1758
1759 if (priv->tlan_rev < 0x30) {
1760 TLAN_DBG(TLAN_DEBUG_RX,
1761 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1762 priv->rx_head, priv->rx_tail);
1763 head_list_phys = priv->rx_list_dma
1764 + sizeof(struct tlan_list)*priv->rx_head;
1765 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1766 ack |= TLAN_HC_GO | TLAN_HC_RT;
1767 priv->rx_eoc_count++;
1768 }
1769
1770 return ack;
1771
1772}
1773
1774
1775
1776
1777/*****************************************************************************
1778******************************************************************************
1779
1780ThunderLAN driver timer function
1781
1782******************************************************************************
1783*****************************************************************************/
1784
1785
1786/***************************************************************
1787 * tlan_timer
1788 *
1789 * Returns:
1790 * Nothing
1791 * Parms:
1792 * data A value given to add timer when
1793 * add_timer was called.
1794 *
1795 * This function handles timed functionality for the
1796 * TLAN driver. The two current timer uses are for
1797 * delaying for autonegotionation and driving the ACT LED.
1798 * - Autonegotiation requires being allowed about
1799 * 2 1/2 seconds before attempting to transmit a
1800 * packet. It would be a very bad thing to hang
1801 * the kernel this long, so the driver doesn't
1802 * allow transmission 'til after this time, for
1803 * certain PHYs. It would be much nicer if all
1804 * PHYs were interrupt-capable like the internal
1805 * PHY.
1806 * - The ACT LED, which shows adapter activity, is
1807 * driven by the driver, and so must be left on
1808 * for a short period to power up the LED so it
1809 * can be seen. This delay can be changed by
1810 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1811 * if desired. 100 ms produces a slightly
1812 * sluggish response.
1813 *
1814 **************************************************************/
1815
1816static void tlan_timer(struct timer_list *t)
1817{
1818 struct tlan_priv *priv = from_timer(priv, t, timer);
1819 struct net_device *dev = priv->dev;
1820 u32 elapsed;
1821 unsigned long flags = 0;
1822
1823 priv->timer.function = NULL;
1824
1825 switch (priv->timer_type) {
1826 case TLAN_TIMER_PHY_PDOWN:
1827 tlan_phy_power_down(dev);
1828 break;
1829 case TLAN_TIMER_PHY_PUP:
1830 tlan_phy_power_up(dev);
1831 break;
1832 case TLAN_TIMER_PHY_RESET:
1833 tlan_phy_reset(dev);
1834 break;
1835 case TLAN_TIMER_PHY_START_LINK:
1836 tlan_phy_start_link(dev);
1837 break;
1838 case TLAN_TIMER_PHY_FINISH_AN:
1839 tlan_phy_finish_auto_neg(dev);
1840 break;
1841 case TLAN_TIMER_FINISH_RESET:
1842 tlan_finish_reset(dev);
1843 break;
1844 case TLAN_TIMER_ACTIVITY:
1845 spin_lock_irqsave(&priv->lock, flags);
1846 if (priv->timer.function == NULL) {
1847 elapsed = jiffies - priv->timer_set_at;
1848 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1849 tlan_dio_write8(dev->base_addr,
1850 TLAN_LED_REG, TLAN_LED_LINK);
1851 } else {
1852 priv->timer.expires = priv->timer_set_at
1853 + TLAN_TIMER_ACT_DELAY;
1854 spin_unlock_irqrestore(&priv->lock, flags);
1855 add_timer(&priv->timer);
1856 break;
1857 }
1858 }
1859 spin_unlock_irqrestore(&priv->lock, flags);
1860 break;
1861 default:
1862 break;
1863 }
1864
1865}
1866
1867
1868/*****************************************************************************
1869******************************************************************************
1870
1871ThunderLAN driver adapter related routines
1872
1873******************************************************************************
1874*****************************************************************************/
1875
1876
1877/***************************************************************
1878 * tlan_reset_lists
1879 *
1880 * Returns:
1881 * Nothing
1882 * Parms:
1883 * dev The device structure with the list
1884 * structures to be reset.
1885 *
1886 * This routine sets the variables associated with managing
1887 * the TLAN lists to their initial values.
1888 *
1889 **************************************************************/
1890
1891static void tlan_reset_lists(struct net_device *dev)
1892{
1893 struct tlan_priv *priv = netdev_priv(dev);
1894 int i;
1895 struct tlan_list *list;
1896 dma_addr_t list_phys;
1897 struct sk_buff *skb;
1898
1899 priv->tx_head = 0;
1900 priv->tx_tail = 0;
1901 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1902 list = priv->tx_list + i;
1903 list->c_stat = TLAN_CSTAT_UNUSED;
1904 list->buffer[0].address = 0;
1905 list->buffer[2].count = 0;
1906 list->buffer[2].address = 0;
1907 list->buffer[8].address = 0;
1908 list->buffer[9].address = 0;
1909 }
1910
1911 priv->rx_head = 0;
1912 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1913 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1914 list = priv->rx_list + i;
1915 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1916 list->c_stat = TLAN_CSTAT_READY;
1917 list->frame_size = TLAN_MAX_FRAME_SIZE;
1918 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1919 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1920 if (!skb)
1921 break;
1922
1923 list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1924 skb->data,
1925 TLAN_MAX_FRAME_SIZE,
1926 DMA_FROM_DEVICE);
1927 tlan_store_skb(list, skb);
1928 list->buffer[1].count = 0;
1929 list->buffer[1].address = 0;
1930 list->forward = list_phys + sizeof(struct tlan_list);
1931 }
1932
1933 /* in case ran out of memory early, clear bits */
1934 while (i < TLAN_NUM_RX_LISTS) {
1935 tlan_store_skb(priv->rx_list + i, NULL);
1936 ++i;
1937 }
1938 list->forward = 0;
1939
1940}
1941
1942
1943static void tlan_free_lists(struct net_device *dev)
1944{
1945 struct tlan_priv *priv = netdev_priv(dev);
1946 int i;
1947 struct tlan_list *list;
1948 struct sk_buff *skb;
1949
1950 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1951 list = priv->tx_list + i;
1952 skb = tlan_get_skb(list);
1953 if (skb) {
1954 dma_unmap_single(&priv->pci_dev->dev,
1955 list->buffer[0].address,
1956 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1957 DMA_TO_DEVICE);
1958 dev_kfree_skb_any(skb);
1959 list->buffer[8].address = 0;
1960 list->buffer[9].address = 0;
1961 }
1962 }
1963
1964 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1965 list = priv->rx_list + i;
1966 skb = tlan_get_skb(list);
1967 if (skb) {
1968 dma_unmap_single(&priv->pci_dev->dev,
1969 list->buffer[0].address,
1970 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1971 dev_kfree_skb_any(skb);
1972 list->buffer[8].address = 0;
1973 list->buffer[9].address = 0;
1974 }
1975 }
1976}
1977
1978
1979
1980
1981/***************************************************************
1982 * tlan_print_dio
1983 *
1984 * Returns:
1985 * Nothing
1986 * Parms:
1987 * io_base Base IO port of the device of
1988 * which to print DIO registers.
1989 *
1990 * This function prints out all the internal (DIO)
1991 * registers of a TLAN chip.
1992 *
1993 **************************************************************/
1994
1995static void tlan_print_dio(u16 io_base)
1996{
1997 u32 data0, data1;
1998 int i;
1999
2000 pr_info("Contents of internal registers for io base 0x%04hx\n",
2001 io_base);
2002 pr_info("Off. +0 +4\n");
2003 for (i = 0; i < 0x4C; i += 8) {
2004 data0 = tlan_dio_read32(io_base, i);
2005 data1 = tlan_dio_read32(io_base, i + 0x4);
2006 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2007 }
2008
2009}
2010
2011
2012
2013
2014/***************************************************************
2015 * TLan_PrintList
2016 *
2017 * Returns:
2018 * Nothing
2019 * Parms:
2020 * list A pointer to the struct tlan_list structure to
2021 * be printed.
2022 * type A string to designate type of list,
2023 * "Rx" or "Tx".
2024 * num The index of the list.
2025 *
2026 * This function prints out the contents of the list
2027 * pointed to by the list parameter.
2028 *
2029 **************************************************************/
2030
2031static void tlan_print_list(struct tlan_list *list, char *type, int num)
2032{
2033 int i;
2034
2035 pr_info("%s List %d at %p\n", type, num, list);
2036 pr_info(" Forward = 0x%08x\n", list->forward);
2037 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2038 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2039 /* for (i = 0; i < 10; i++) { */
2040 for (i = 0; i < 2; i++) {
2041 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2042 i, list->buffer[i].count, list->buffer[i].address);
2043 }
2044
2045}
2046
2047
2048
2049
2050/***************************************************************
2051 * tlan_read_and_clear_stats
2052 *
2053 * Returns:
2054 * Nothing
2055 * Parms:
2056 * dev Pointer to device structure of adapter
2057 * to which to read stats.
2058 * record Flag indicating whether to add
2059 *
2060 * This functions reads all the internal status registers
2061 * of the TLAN chip, which clears them as a side effect.
2062 * It then either adds the values to the device's status
2063 * struct, or discards them, depending on whether record
2064 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2065 *
2066 **************************************************************/
2067
2068static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2069{
2070 u32 tx_good, tx_under;
2071 u32 rx_good, rx_over;
2072 u32 def_tx, crc, code;
2073 u32 multi_col, single_col;
2074 u32 excess_col, late_col, loss;
2075
2076 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2077 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2078 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2079 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2080 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2081
2082 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2083 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2084 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2085 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2086 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2087
2088 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2089 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2090 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2091 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2092 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2093
2094 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2095 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2096 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2097 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2098 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2099
2100 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2101 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2102 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2103 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2104
2105 if (record) {
2106 dev->stats.rx_packets += rx_good;
2107 dev->stats.rx_errors += rx_over + crc + code;
2108 dev->stats.tx_packets += tx_good;
2109 dev->stats.tx_errors += tx_under + loss;
2110 dev->stats.collisions += multi_col
2111 + single_col + excess_col + late_col;
2112
2113 dev->stats.rx_over_errors += rx_over;
2114 dev->stats.rx_crc_errors += crc;
2115 dev->stats.rx_frame_errors += code;
2116
2117 dev->stats.tx_aborted_errors += tx_under;
2118 dev->stats.tx_carrier_errors += loss;
2119 }
2120
2121}
2122
2123
2124
2125
2126/***************************************************************
2127 * TLan_Reset
2128 *
2129 * Returns:
2130 * 0
2131 * Parms:
2132 * dev Pointer to device structure of adapter
2133 * to be reset.
2134 *
2135 * This function resets the adapter and it's physical
2136 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2137 * Programmer's Guide" for details. The routine tries to
2138 * implement what is detailed there, though adjustments
2139 * have been made.
2140 *
2141 **************************************************************/
2142
2143static void
2144tlan_reset_adapter(struct net_device *dev)
2145{
2146 struct tlan_priv *priv = netdev_priv(dev);
2147 int i;
2148 u32 addr;
2149 u32 data;
2150 u8 data8;
2151
2152 priv->tlan_full_duplex = false;
2153 priv->phy_online = 0;
2154 netif_carrier_off(dev);
2155
2156/* 1. Assert reset bit. */
2157
2158 data = inl(dev->base_addr + TLAN_HOST_CMD);
2159 data |= TLAN_HC_AD_RST;
2160 outl(data, dev->base_addr + TLAN_HOST_CMD);
2161
2162 udelay(1000);
2163
2164/* 2. Turn off interrupts. (Probably isn't necessary) */
2165
2166 data = inl(dev->base_addr + TLAN_HOST_CMD);
2167 data |= TLAN_HC_INT_OFF;
2168 outl(data, dev->base_addr + TLAN_HOST_CMD);
2169
2170/* 3. Clear AREGs and HASHs. */
2171
2172 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2173 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2174
2175/* 4. Setup NetConfig register. */
2176
2177 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2178 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2179
2180/* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2181
2182 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2183 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2184
2185/* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2186
2187 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2188 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2189 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2190
2191/* 7. Setup the remaining registers. */
2192
2193 if (priv->tlan_rev >= 0x30) {
2194 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2195 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2196 }
2197 tlan_phy_detect(dev);
2198 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2199
2200 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2201 data |= TLAN_NET_CFG_BIT;
2202 if (priv->aui == 1) {
2203 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2204 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2205 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2206 priv->tlan_full_duplex = true;
2207 } else {
2208 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2209 }
2210 }
2211
2212 /* don't power down internal PHY if we're going to use it */
2213 if (priv->phy_num == 0 ||
2214 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2215 data |= TLAN_NET_CFG_PHY_EN;
2216 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2217
2218 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2219 tlan_finish_reset(dev);
2220 else
2221 tlan_phy_power_down(dev);
2222
2223}
2224
2225
2226
2227
2228static void
2229tlan_finish_reset(struct net_device *dev)
2230{
2231 struct tlan_priv *priv = netdev_priv(dev);
2232 u8 data;
2233 u32 phy;
2234 u8 sio;
2235 u16 status;
2236 u16 partner;
2237 u16 tlphy_ctl;
2238 u16 tlphy_par;
2239 u16 tlphy_id1, tlphy_id2;
2240 int i;
2241
2242 phy = priv->phy[priv->phy_num];
2243
2244 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2245 if (priv->tlan_full_duplex)
2246 data |= TLAN_NET_CMD_DUPLEX;
2247 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2248 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2249 if (priv->phy_num == 0)
2250 data |= TLAN_NET_MASK_MASK7;
2251 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2252 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2253 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2254 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2255
2256 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2257 (priv->aui)) {
2258 status = MII_GS_LINK;
2259 netdev_info(dev, "Link forced\n");
2260 } else {
2261 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2262 udelay(1000);
2263 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2264 if (status & MII_GS_LINK) {
2265 /* We only support link info on Nat.Sem. PHY's */
2266 if ((tlphy_id1 == NAT_SEM_ID1) &&
2267 (tlphy_id2 == NAT_SEM_ID2)) {
2268 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2269 &partner);
2270 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2271 &tlphy_par);
2272
2273 netdev_info(dev,
2274 "Link active, %s %uMbps %s-Duplex\n",
2275 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2276 ? "forced" : "Autonegotiation enabled,",
2277 tlphy_par & TLAN_PHY_SPEED_100
2278 ? 100 : 10,
2279 tlphy_par & TLAN_PHY_DUPLEX_FULL
2280 ? "Full" : "Half");
2281
2282 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2283 netdev_info(dev, "Partner capability:");
2284 for (i = 5; i < 10; i++)
2285 if (partner & (1 << i))
2286 pr_cont(" %s",
2287 media[i-5]);
2288 pr_cont("\n");
2289 }
2290 } else
2291 netdev_info(dev, "Link active\n");
2292 /* Enabling link beat monitoring */
2293 priv->media_timer.expires = jiffies + HZ;
2294 add_timer(&priv->media_timer);
2295 }
2296 }
2297
2298 if (priv->phy_num == 0) {
2299 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2300 tlphy_ctl |= TLAN_TC_INTEN;
2301 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2302 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2303 sio |= TLAN_NET_SIO_MINTEN;
2304 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2305 }
2306
2307 if (status & MII_GS_LINK) {
2308 tlan_set_mac(dev, 0, dev->dev_addr);
2309 priv->phy_online = 1;
2310 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2311 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2312 outb((TLAN_HC_REQ_INT >> 8),
2313 dev->base_addr + TLAN_HOST_CMD + 1);
2314 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2315 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2316 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2317 netif_carrier_on(dev);
2318 } else {
2319 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2320 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2321 return;
2322 }
2323 tlan_set_multicast_list(dev);
2324
2325}
2326
2327
2328
2329
2330/***************************************************************
2331 * tlan_set_mac
2332 *
2333 * Returns:
2334 * Nothing
2335 * Parms:
2336 * dev Pointer to device structure of adapter
2337 * on which to change the AREG.
2338 * areg The AREG to set the address in (0 - 3).
2339 * mac A pointer to an array of chars. Each
2340 * element stores one byte of the address.
2341 * IE, it isn't in ascii.
2342 *
2343 * This function transfers a MAC address to one of the
2344 * TLAN AREGs (address registers). The TLAN chip locks
2345 * the register on writing to offset 0 and unlocks the
2346 * register after writing to offset 5. If NULL is passed
2347 * in mac, then the AREG is filled with 0's.
2348 *
2349 **************************************************************/
2350
2351static void tlan_set_mac(struct net_device *dev, int areg, const char *mac)
2352{
2353 int i;
2354
2355 areg *= 6;
2356
2357 if (mac != NULL) {
2358 for (i = 0; i < 6; i++)
2359 tlan_dio_write8(dev->base_addr,
2360 TLAN_AREG_0 + areg + i, mac[i]);
2361 } else {
2362 for (i = 0; i < 6; i++)
2363 tlan_dio_write8(dev->base_addr,
2364 TLAN_AREG_0 + areg + i, 0);
2365 }
2366
2367}
2368
2369
2370
2371
2372/*****************************************************************************
2373******************************************************************************
2374
2375ThunderLAN driver PHY layer routines
2376
2377******************************************************************************
2378*****************************************************************************/
2379
2380
2381
2382/*********************************************************************
2383 * __tlan_phy_print
2384 *
2385 * Returns:
2386 * Nothing
2387 * Parms:
2388 * dev A pointer to the device structure of the
2389 * TLAN device having the PHYs to be detailed.
2390 *
2391 * This function prints the registers a PHY (aka transceiver).
2392 *
2393 ********************************************************************/
2394
2395static void __tlan_phy_print(struct net_device *dev)
2396{
2397 struct tlan_priv *priv = netdev_priv(dev);
2398 u16 i, data0, data1, data2, data3, phy;
2399
2400 lockdep_assert_held(&priv->lock);
2401
2402 phy = priv->phy[priv->phy_num];
2403
2404 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2405 netdev_info(dev, "Unmanaged PHY\n");
2406 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2407 netdev_info(dev, "PHY 0x%02x\n", phy);
2408 pr_info(" Off. +0 +1 +2 +3\n");
2409 for (i = 0; i < 0x20; i += 4) {
2410 __tlan_mii_read_reg(dev, phy, i, &data0);
2411 __tlan_mii_read_reg(dev, phy, i + 1, &data1);
2412 __tlan_mii_read_reg(dev, phy, i + 2, &data2);
2413 __tlan_mii_read_reg(dev, phy, i + 3, &data3);
2414 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2415 i, data0, data1, data2, data3);
2416 }
2417 } else {
2418 netdev_info(dev, "Invalid PHY\n");
2419 }
2420
2421}
2422
2423static void tlan_phy_print(struct net_device *dev)
2424{
2425 struct tlan_priv *priv = netdev_priv(dev);
2426 unsigned long flags;
2427
2428 spin_lock_irqsave(&priv->lock, flags);
2429 __tlan_phy_print(dev);
2430 spin_unlock_irqrestore(&priv->lock, flags);
2431}
2432
2433
2434/*********************************************************************
2435 * tlan_phy_detect
2436 *
2437 * Returns:
2438 * Nothing
2439 * Parms:
2440 * dev A pointer to the device structure of the adapter
2441 * for which the PHY needs determined.
2442 *
2443 * So far I've found that adapters which have external PHYs
2444 * may also use the internal PHY for part of the functionality.
2445 * (eg, AUI/Thinnet). This function finds out if this TLAN
2446 * chip has an internal PHY, and then finds the first external
2447 * PHY (starting from address 0) if it exists).
2448 *
2449 ********************************************************************/
2450
2451static void tlan_phy_detect(struct net_device *dev)
2452{
2453 struct tlan_priv *priv = netdev_priv(dev);
2454 u16 control;
2455 u16 hi;
2456 u16 lo;
2457 u32 phy;
2458
2459 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2460 priv->phy_num = 0xffff;
2461 return;
2462 }
2463
2464 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2465
2466 if (hi != 0xffff)
2467 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2468 else
2469 priv->phy[0] = TLAN_PHY_NONE;
2470
2471 priv->phy[1] = TLAN_PHY_NONE;
2472 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2473 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2474 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2475 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2476 if ((control != 0xffff) ||
2477 (hi != 0xffff) || (lo != 0xffff)) {
2478 TLAN_DBG(TLAN_DEBUG_GNRL,
2479 "PHY found at %02x %04x %04x %04x\n",
2480 phy, control, hi, lo);
2481 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2482 (phy != TLAN_PHY_MAX_ADDR)) {
2483 priv->phy[1] = phy;
2484 }
2485 }
2486 }
2487
2488 if (priv->phy[1] != TLAN_PHY_NONE)
2489 priv->phy_num = 1;
2490 else if (priv->phy[0] != TLAN_PHY_NONE)
2491 priv->phy_num = 0;
2492 else
2493 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2494
2495}
2496
2497
2498
2499
2500static void tlan_phy_power_down(struct net_device *dev)
2501{
2502 struct tlan_priv *priv = netdev_priv(dev);
2503 u16 value;
2504
2505 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2506 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2507 tlan_mii_sync(dev->base_addr);
2508 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2509 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2510 /* if using internal PHY, the external PHY must be powered on */
2511 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2512 value = MII_GC_ISOLATE; /* just isolate it from MII */
2513 tlan_mii_sync(dev->base_addr);
2514 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2515 }
2516
2517 /* Wait for 50 ms and powerup
2518 * This is arbitrary. It is intended to make sure the
2519 * transceiver settles.
2520 */
2521 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2522
2523}
2524
2525
2526
2527
2528static void tlan_phy_power_up(struct net_device *dev)
2529{
2530 struct tlan_priv *priv = netdev_priv(dev);
2531 u16 value;
2532
2533 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2534 tlan_mii_sync(dev->base_addr);
2535 value = MII_GC_LOOPBK;
2536 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2537 tlan_mii_sync(dev->base_addr);
2538 /* Wait for 500 ms and reset the
2539 * transceiver. The TLAN docs say both 50 ms and
2540 * 500 ms, so do the longer, just in case.
2541 */
2542 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2543
2544}
2545
2546
2547
2548
2549static void tlan_phy_reset(struct net_device *dev)
2550{
2551 struct tlan_priv *priv = netdev_priv(dev);
2552 u16 phy;
2553 u16 value;
2554 unsigned long timeout = jiffies + HZ;
2555
2556 phy = priv->phy[priv->phy_num];
2557
2558 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2559 tlan_mii_sync(dev->base_addr);
2560 value = MII_GC_LOOPBK | MII_GC_RESET;
2561 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2562 do {
2563 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2564 if (time_after(jiffies, timeout)) {
2565 netdev_err(dev, "PHY reset timeout\n");
2566 return;
2567 }
2568 } while (value & MII_GC_RESET);
2569
2570 /* Wait for 500 ms and initialize.
2571 * I don't remember why I wait this long.
2572 * I've changed this to 50ms, as it seems long enough.
2573 */
2574 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2575
2576}
2577
2578
2579
2580
2581static void tlan_phy_start_link(struct net_device *dev)
2582{
2583 struct tlan_priv *priv = netdev_priv(dev);
2584 u16 ability;
2585 u16 control;
2586 u16 data;
2587 u16 phy;
2588 u16 status;
2589 u16 tctl;
2590
2591 phy = priv->phy[priv->phy_num];
2592 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2593 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2594 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2595
2596 if ((status & MII_GS_AUTONEG) &&
2597 (!priv->aui)) {
2598 ability = status >> 11;
2599 if (priv->speed == TLAN_SPEED_10 &&
2600 priv->duplex == TLAN_DUPLEX_HALF) {
2601 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2602 } else if (priv->speed == TLAN_SPEED_10 &&
2603 priv->duplex == TLAN_DUPLEX_FULL) {
2604 priv->tlan_full_duplex = true;
2605 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2606 } else if (priv->speed == TLAN_SPEED_100 &&
2607 priv->duplex == TLAN_DUPLEX_HALF) {
2608 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2609 } else if (priv->speed == TLAN_SPEED_100 &&
2610 priv->duplex == TLAN_DUPLEX_FULL) {
2611 priv->tlan_full_duplex = true;
2612 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2613 } else {
2614
2615 /* Set Auto-Neg advertisement */
2616 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2617 (ability << 5) | 1);
2618 /* Enablee Auto-Neg */
2619 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2620 /* Restart Auto-Neg */
2621 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2622 /* Wait for 4 sec for autonegotiation
2623 * to complete. The max spec time is less than this
2624 * but the card need additional time to start AN.
2625 * .5 sec should be plenty extra.
2626 */
2627 netdev_info(dev, "Starting autonegotiation\n");
2628 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2629 return;
2630 }
2631
2632 }
2633
2634 if ((priv->aui) && (priv->phy_num != 0)) {
2635 priv->phy_num = 0;
2636 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2637 | TLAN_NET_CFG_PHY_EN;
2638 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2639 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2640 return;
2641 } else if (priv->phy_num == 0) {
2642 control = 0;
2643 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2644 if (priv->aui) {
2645 tctl |= TLAN_TC_AUISEL;
2646 } else {
2647 tctl &= ~TLAN_TC_AUISEL;
2648 if (priv->duplex == TLAN_DUPLEX_FULL) {
2649 control |= MII_GC_DUPLEX;
2650 priv->tlan_full_duplex = true;
2651 }
2652 if (priv->speed == TLAN_SPEED_100)
2653 control |= MII_GC_SPEEDSEL;
2654 }
2655 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2656 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2657 }
2658
2659 /* Wait for 2 sec to give the transceiver time
2660 * to establish link.
2661 */
2662 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2663
2664}
2665
2666
2667
2668
2669static void tlan_phy_finish_auto_neg(struct net_device *dev)
2670{
2671 struct tlan_priv *priv = netdev_priv(dev);
2672 u16 an_adv;
2673 u16 an_lpa;
2674 u16 mode;
2675 u16 phy;
2676 u16 status;
2677
2678 phy = priv->phy[priv->phy_num];
2679
2680 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2681 udelay(1000);
2682 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2683
2684 if (!(status & MII_GS_AUTOCMPLT)) {
2685 /* Wait for 8 sec to give the process
2686 * more time. Perhaps we should fail after a while.
2687 */
2688 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2689 return;
2690 }
2691
2692 netdev_info(dev, "Autonegotiation complete\n");
2693 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2694 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2695 mode = an_adv & an_lpa & 0x03E0;
2696 if (mode & 0x0100)
2697 priv->tlan_full_duplex = true;
2698 else if (!(mode & 0x0080) && (mode & 0x0040))
2699 priv->tlan_full_duplex = true;
2700
2701 /* switch to internal PHY for 10 Mbps */
2702 if ((!(mode & 0x0180)) &&
2703 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2704 (priv->phy_num != 0)) {
2705 priv->phy_num = 0;
2706 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2707 return;
2708 }
2709
2710 if (priv->phy_num == 0) {
2711 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2712 (an_adv & an_lpa & 0x0040)) {
2713 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2714 MII_GC_AUTOENB | MII_GC_DUPLEX);
2715 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2716 } else {
2717 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2718 MII_GC_AUTOENB);
2719 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2720 }
2721 }
2722
2723 /* Wait for 100 ms. No reason in partiticular.
2724 */
2725 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2726
2727}
2728
2729
2730/*********************************************************************
2731 *
2732 * tlan_phy_monitor
2733 *
2734 * Returns:
2735 * None
2736 *
2737 * Params:
2738 * data The device structure of this device.
2739 *
2740 *
2741 * This function monitors PHY condition by reading the status
2742 * register via the MII bus, controls LINK LED and notifies the
2743 * kernel about link state.
2744 *
2745 *******************************************************************/
2746
2747static void tlan_phy_monitor(struct timer_list *t)
2748{
2749 struct tlan_priv *priv = from_timer(priv, t, media_timer);
2750 struct net_device *dev = priv->dev;
2751 u16 phy;
2752 u16 phy_status;
2753
2754 phy = priv->phy[priv->phy_num];
2755
2756 /* Get PHY status register */
2757 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2758
2759 /* Check if link has been lost */
2760 if (!(phy_status & MII_GS_LINK)) {
2761 if (netif_carrier_ok(dev)) {
2762 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2763 dev->name);
2764 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2765 netif_carrier_off(dev);
2766 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2767 /* power down internal PHY */
2768 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2769 MII_GC_ISOLATE;
2770
2771 tlan_mii_sync(dev->base_addr);
2772 tlan_mii_write_reg(dev, priv->phy[0],
2773 MII_GEN_CTL, data);
2774 /* set to external PHY */
2775 priv->phy_num = 1;
2776 /* restart autonegotiation */
2777 tlan_set_timer(dev, msecs_to_jiffies(400),
2778 TLAN_TIMER_PHY_PDOWN);
2779 return;
2780 }
2781 }
2782 }
2783
2784 /* Link restablished? */
2785 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2786 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2787 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2788 dev->name);
2789 netif_carrier_on(dev);
2790 }
2791 priv->media_timer.expires = jiffies + HZ;
2792 add_timer(&priv->media_timer);
2793}
2794
2795
2796/*****************************************************************************
2797******************************************************************************
2798
2799ThunderLAN driver MII routines
2800
2801these routines are based on the information in chap. 2 of the
2802"ThunderLAN Programmer's Guide", pp. 15-24.
2803
2804******************************************************************************
2805*****************************************************************************/
2806
2807
2808/***************************************************************
2809 * __tlan_mii_read_reg
2810 *
2811 * Returns:
2812 * false if ack received ok
2813 * true if no ack received or other error
2814 *
2815 * Parms:
2816 * dev The device structure containing
2817 * The io address and interrupt count
2818 * for this device.
2819 * phy The address of the PHY to be queried.
2820 * reg The register whose contents are to be
2821 * retrieved.
2822 * val A pointer to a variable to store the
2823 * retrieved value.
2824 *
2825 * This function uses the TLAN's MII bus to retrieve the contents
2826 * of a given register on a PHY. It sends the appropriate info
2827 * and then reads the 16-bit register value from the MII bus via
2828 * the TLAN SIO register.
2829 *
2830 **************************************************************/
2831
2832static bool
2833__tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2834{
2835 u8 nack;
2836 u16 sio, tmp;
2837 u32 i;
2838 bool err;
2839 int minten;
2840 struct tlan_priv *priv = netdev_priv(dev);
2841
2842 lockdep_assert_held(&priv->lock);
2843
2844 err = false;
2845 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2846 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2847
2848 tlan_mii_sync(dev->base_addr);
2849
2850 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2851 if (minten)
2852 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2853
2854 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2855 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2856 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2857 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2858
2859
2860 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2861
2862 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2863 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2864 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2865
2866 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2867 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2868 if (nack) { /* no ACK, so fake it */
2869 for (i = 0; i < 16; i++) {
2870 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2871 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2872 }
2873 tmp = 0xffff;
2874 err = true;
2875 } else { /* ACK, so read data */
2876 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2877 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2878 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2879 tmp |= i;
2880 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2881 }
2882 }
2883
2884
2885 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2886 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2887
2888 if (minten)
2889 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2890
2891 *val = tmp;
2892
2893 return err;
2894}
2895
2896static void tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg,
2897 u16 *val)
2898{
2899 struct tlan_priv *priv = netdev_priv(dev);
2900 unsigned long flags;
2901
2902 spin_lock_irqsave(&priv->lock, flags);
2903 __tlan_mii_read_reg(dev, phy, reg, val);
2904 spin_unlock_irqrestore(&priv->lock, flags);
2905}
2906
2907/***************************************************************
2908 * tlan_mii_send_data
2909 *
2910 * Returns:
2911 * Nothing
2912 * Parms:
2913 * base_port The base IO port of the adapter in
2914 * question.
2915 * dev The address of the PHY to be queried.
2916 * data The value to be placed on the MII bus.
2917 * num_bits The number of bits in data that are to
2918 * be placed on the MII bus.
2919 *
2920 * This function sends on sequence of bits on the MII
2921 * configuration bus.
2922 *
2923 **************************************************************/
2924
2925static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2926{
2927 u16 sio;
2928 u32 i;
2929
2930 if (num_bits == 0)
2931 return;
2932
2933 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2934 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2935 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2936
2937 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2938 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2939 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2940 if (data & i)
2941 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2942 else
2943 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2944 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2945 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2946 }
2947
2948}
2949
2950
2951
2952
2953/***************************************************************
2954 * TLan_MiiSync
2955 *
2956 * Returns:
2957 * Nothing
2958 * Parms:
2959 * base_port The base IO port of the adapter in
2960 * question.
2961 *
2962 * This functions syncs all PHYs in terms of the MII configuration
2963 * bus.
2964 *
2965 **************************************************************/
2966
2967static void tlan_mii_sync(u16 base_port)
2968{
2969 int i;
2970 u16 sio;
2971
2972 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2973 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2974
2975 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2976 for (i = 0; i < 32; i++) {
2977 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2978 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2979 }
2980
2981}
2982
2983
2984
2985
2986/***************************************************************
2987 * __tlan_mii_write_reg
2988 *
2989 * Returns:
2990 * Nothing
2991 * Parms:
2992 * dev The device structure for the device
2993 * to write to.
2994 * phy The address of the PHY to be written to.
2995 * reg The register whose contents are to be
2996 * written.
2997 * val The value to be written to the register.
2998 *
2999 * This function uses the TLAN's MII bus to write the contents of a
3000 * given register on a PHY. It sends the appropriate info and then
3001 * writes the 16-bit register value from the MII configuration bus
3002 * via the TLAN SIO register.
3003 *
3004 **************************************************************/
3005
3006static void
3007__tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3008{
3009 u16 sio;
3010 int minten;
3011 struct tlan_priv *priv = netdev_priv(dev);
3012
3013 lockdep_assert_held(&priv->lock);
3014
3015 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3016 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3017
3018 tlan_mii_sync(dev->base_addr);
3019
3020 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3021 if (minten)
3022 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3023
3024 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3025 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3026 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3027 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3028
3029 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3030 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3031
3032 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3033 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3034
3035 if (minten)
3036 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3037
3038}
3039
3040static void
3041tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3042{
3043 struct tlan_priv *priv = netdev_priv(dev);
3044 unsigned long flags;
3045
3046 spin_lock_irqsave(&priv->lock, flags);
3047 __tlan_mii_write_reg(dev, phy, reg, val);
3048 spin_unlock_irqrestore(&priv->lock, flags);
3049}
3050
3051
3052/*****************************************************************************
3053******************************************************************************
3054
3055ThunderLAN driver eeprom routines
3056
3057the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3058EEPROM. these functions are based on information in microchip's
3059data sheet. I don't know how well this functions will work with
3060other Eeproms.
3061
3062******************************************************************************
3063*****************************************************************************/
3064
3065
3066/***************************************************************
3067 * tlan_ee_send_start
3068 *
3069 * Returns:
3070 * Nothing
3071 * Parms:
3072 * io_base The IO port base address for the
3073 * TLAN device with the EEPROM to
3074 * use.
3075 *
3076 * This function sends a start cycle to an EEPROM attached
3077 * to a TLAN chip.
3078 *
3079 **************************************************************/
3080
3081static void tlan_ee_send_start(u16 io_base)
3082{
3083 u16 sio;
3084
3085 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3086 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3087
3088 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3089 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3090 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3091 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3092 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3093
3094}
3095
3096
3097
3098
3099/***************************************************************
3100 * tlan_ee_send_byte
3101 *
3102 * Returns:
3103 * If the correct ack was received, 0, otherwise 1
3104 * Parms: io_base The IO port base address for the
3105 * TLAN device with the EEPROM to
3106 * use.
3107 * data The 8 bits of information to
3108 * send to the EEPROM.
3109 * stop If TLAN_EEPROM_STOP is passed, a
3110 * stop cycle is sent after the
3111 * byte is sent after the ack is
3112 * read.
3113 *
3114 * This function sends a byte on the serial EEPROM line,
3115 * driving the clock to send each bit. The function then
3116 * reverses transmission direction and reads an acknowledge
3117 * bit.
3118 *
3119 **************************************************************/
3120
3121static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3122{
3123 int err;
3124 u8 place;
3125 u16 sio;
3126
3127 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3128 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3129
3130 /* Assume clock is low, tx is enabled; */
3131 for (place = 0x80; place != 0; place >>= 1) {
3132 if (place & data)
3133 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3134 else
3135 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3136 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3137 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3138 }
3139 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3140 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3141 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3142 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3143 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3144
3145 if ((!err) && stop) {
3146 /* STOP, raise data while clock is high */
3147 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3148 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3149 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3150 }
3151
3152 return err;
3153
3154}
3155
3156
3157
3158
3159/***************************************************************
3160 * tlan_ee_receive_byte
3161 *
3162 * Returns:
3163 * Nothing
3164 * Parms:
3165 * io_base The IO port base address for the
3166 * TLAN device with the EEPROM to
3167 * use.
3168 * data An address to a char to hold the
3169 * data sent from the EEPROM.
3170 * stop If TLAN_EEPROM_STOP is passed, a
3171 * stop cycle is sent after the
3172 * byte is received, and no ack is
3173 * sent.
3174 *
3175 * This function receives 8 bits of data from the EEPROM
3176 * over the serial link. It then sends and ack bit, or no
3177 * ack and a stop bit. This function is used to retrieve
3178 * data after the address of a byte in the EEPROM has been
3179 * sent.
3180 *
3181 **************************************************************/
3182
3183static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3184{
3185 u8 place;
3186 u16 sio;
3187
3188 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3189 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3190 *data = 0;
3191
3192 /* Assume clock is low, tx is enabled; */
3193 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3194 for (place = 0x80; place; place >>= 1) {
3195 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3196 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3197 *data |= place;
3198 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3199 }
3200
3201 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3202 if (!stop) {
3203 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3204 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3205 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3206 } else {
3207 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3208 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3209 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3210 /* STOP, raise data while clock is high */
3211 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3212 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3213 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3214 }
3215
3216}
3217
3218
3219
3220
3221/***************************************************************
3222 * tlan_ee_read_byte
3223 *
3224 * Returns:
3225 * No error = 0, else, the stage at which the error
3226 * occurred.
3227 * Parms:
3228 * io_base The IO port base address for the
3229 * TLAN device with the EEPROM to
3230 * use.
3231 * ee_addr The address of the byte in the
3232 * EEPROM whose contents are to be
3233 * retrieved.
3234 * data An address to a char to hold the
3235 * data obtained from the EEPROM.
3236 *
3237 * This function reads a byte of information from an byte
3238 * cell in the EEPROM.
3239 *
3240 **************************************************************/
3241
3242static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3243{
3244 int err;
3245 struct tlan_priv *priv = netdev_priv(dev);
3246 unsigned long flags = 0;
3247 int ret = 0;
3248
3249 spin_lock_irqsave(&priv->lock, flags);
3250
3251 tlan_ee_send_start(dev->base_addr);
3252 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3253 if (err) {
3254 ret = 1;
3255 goto fail;
3256 }
3257 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3258 if (err) {
3259 ret = 2;
3260 goto fail;
3261 }
3262 tlan_ee_send_start(dev->base_addr);
3263 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3264 if (err) {
3265 ret = 3;
3266 goto fail;
3267 }
3268 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3269fail:
3270 spin_unlock_irqrestore(&priv->lock, flags);
3271
3272 return ret;
3273
3274}
3275
3276
3277
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 */
51static struct net_device *tlan_eisa_devices;
52
53static int tlan_devices_installed;
54
55/* Set speed, duplex and aui settings */
56static int aui[MAX_TLAN_BOARDS];
57static int duplex[MAX_TLAN_BOARDS];
58static int speed[MAX_TLAN_BOARDS];
59static int boards_found;
60module_param_array(aui, int, NULL, 0);
61module_param_array(duplex, int, NULL, 0);
62module_param_array(speed, int, NULL, 0);
63MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
67
68MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70MODULE_LICENSE("GPL");
71
72/* Turn on debugging.
73 * See Documentation/networking/device_drivers/ti/tlan.txt for details
74 */
75static int debug;
76module_param(debug, int, 0);
77MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
78
79static const char tlan_signature[] = "TLAN";
80static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
81static int tlan_have_pci;
82static int tlan_have_eisa;
83
84static const char * const media[] = {
85 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
86 "100BaseTx-FD", "100BaseT4", NULL
87};
88
89static 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
121static 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};
150MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
151
152static void tlan_eisa_probe(void);
153static void tlan_eisa_cleanup(void);
154static int tlan_init(struct net_device *);
155static int tlan_open(struct net_device *dev);
156static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
157static irqreturn_t tlan_handle_interrupt(int, void *);
158static int tlan_close(struct net_device *);
159static struct net_device_stats *tlan_get_stats(struct net_device *);
160static void tlan_set_multicast_list(struct net_device *);
161static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
162static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
163 int irq, int rev, const struct pci_device_id *ent);
164static void tlan_tx_timeout(struct net_device *dev);
165static void tlan_tx_timeout_work(struct work_struct *work);
166static int tlan_init_one(struct pci_dev *pdev,
167 const struct pci_device_id *ent);
168
169static u32 tlan_handle_tx_eof(struct net_device *, u16);
170static u32 tlan_handle_stat_overflow(struct net_device *, u16);
171static u32 tlan_handle_rx_eof(struct net_device *, u16);
172static u32 tlan_handle_dummy(struct net_device *, u16);
173static u32 tlan_handle_tx_eoc(struct net_device *, u16);
174static u32 tlan_handle_status_check(struct net_device *, u16);
175static u32 tlan_handle_rx_eoc(struct net_device *, u16);
176
177static void tlan_timer(struct timer_list *t);
178static void tlan_phy_monitor(struct timer_list *t);
179
180static void tlan_reset_lists(struct net_device *);
181static void tlan_free_lists(struct net_device *);
182static void tlan_print_dio(u16);
183static void tlan_print_list(struct tlan_list *, char *, int);
184static void tlan_read_and_clear_stats(struct net_device *, int);
185static void tlan_reset_adapter(struct net_device *);
186static void tlan_finish_reset(struct net_device *);
187static void tlan_set_mac(struct net_device *, int areg, char *mac);
188
189static void tlan_phy_print(struct net_device *);
190static void tlan_phy_detect(struct net_device *);
191static void tlan_phy_power_down(struct net_device *);
192static void tlan_phy_power_up(struct net_device *);
193static void tlan_phy_reset(struct net_device *);
194static void tlan_phy_start_link(struct net_device *);
195static void tlan_phy_finish_auto_neg(struct net_device *);
196
197/*
198 static int tlan_phy_nop(struct net_device *);
199 static int tlan_phy_internal_check(struct net_device *);
200 static int tlan_phy_internal_service(struct net_device *);
201 static int tlan_phy_dp83840a_check(struct net_device *);
202*/
203
204static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
205static void tlan_mii_send_data(u16, u32, unsigned);
206static void tlan_mii_sync(u16);
207static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
208
209static void tlan_ee_send_start(u16);
210static int tlan_ee_send_byte(u16, u8, int);
211static void tlan_ee_receive_byte(u16, u8 *, int);
212static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
213
214
215static inline void
216tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
217{
218 unsigned long addr = (unsigned long)skb;
219 tag->buffer[9].address = addr;
220 tag->buffer[8].address = upper_32_bits(addr);
221}
222
223static inline struct sk_buff *
224tlan_get_skb(const struct tlan_list *tag)
225{
226 unsigned long addr;
227
228 addr = tag->buffer[9].address;
229 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
230 return (struct sk_buff *) addr;
231}
232
233static u32
234(*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
235 NULL,
236 tlan_handle_tx_eof,
237 tlan_handle_stat_overflow,
238 tlan_handle_rx_eof,
239 tlan_handle_dummy,
240 tlan_handle_tx_eoc,
241 tlan_handle_status_check,
242 tlan_handle_rx_eoc
243};
244
245static inline void
246tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
247{
248 struct tlan_priv *priv = netdev_priv(dev);
249 unsigned long flags = 0;
250
251 if (!in_irq())
252 spin_lock_irqsave(&priv->lock, flags);
253 if (priv->timer.function != NULL &&
254 priv->timer_type != TLAN_TIMER_ACTIVITY) {
255 if (!in_irq())
256 spin_unlock_irqrestore(&priv->lock, flags);
257 return;
258 }
259 priv->timer.function = tlan_timer;
260 if (!in_irq())
261 spin_unlock_irqrestore(&priv->lock, flags);
262
263 priv->timer_set_at = jiffies;
264 priv->timer_type = type;
265 mod_timer(&priv->timer, jiffies + ticks);
266
267}
268
269
270/*****************************************************************************
271******************************************************************************
272
273ThunderLAN driver primary functions
274
275these 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
300static 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 pci_free_consistent(priv->pci_dev,
309 priv->dma_size, priv->dma_storage,
310 priv->dma_storage_dma);
311 }
312
313#ifdef CONFIG_PCI
314 pci_release_regions(pdev);
315#endif
316
317 free_netdev(dev);
318
319 cancel_work_sync(&priv->tlan_tqueue);
320}
321
322static void tlan_start(struct net_device *dev)
323{
324 tlan_reset_lists(dev);
325 /* NOTE: It might not be necessary to read the stats before a
326 reset if you don't care what the values are.
327 */
328 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
329 tlan_reset_adapter(dev);
330 netif_wake_queue(dev);
331}
332
333static void tlan_stop(struct net_device *dev)
334{
335 struct tlan_priv *priv = netdev_priv(dev);
336
337 del_timer_sync(&priv->media_timer);
338 tlan_read_and_clear_stats(dev, TLAN_RECORD);
339 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
340 /* Reset and power down phy */
341 tlan_reset_adapter(dev);
342 if (priv->timer.function != NULL) {
343 del_timer_sync(&priv->timer);
344 priv->timer.function = NULL;
345 }
346}
347
348#ifdef CONFIG_PM
349
350static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
351{
352 struct net_device *dev = pci_get_drvdata(pdev);
353
354 if (netif_running(dev))
355 tlan_stop(dev);
356
357 netif_device_detach(dev);
358 pci_save_state(pdev);
359 pci_disable_device(pdev);
360 pci_wake_from_d3(pdev, false);
361 pci_set_power_state(pdev, PCI_D3hot);
362
363 return 0;
364}
365
366static int tlan_resume(struct pci_dev *pdev)
367{
368 struct net_device *dev = pci_get_drvdata(pdev);
369 int rc = pci_enable_device(pdev);
370
371 if (rc)
372 return rc;
373 pci_restore_state(pdev);
374 pci_enable_wake(pdev, PCI_D0, 0);
375 netif_device_attach(dev);
376
377 if (netif_running(dev))
378 tlan_start(dev);
379
380 return 0;
381}
382
383#else /* CONFIG_PM */
384
385#define tlan_suspend NULL
386#define tlan_resume NULL
387
388#endif /* CONFIG_PM */
389
390
391static struct pci_driver tlan_driver = {
392 .name = "tlan",
393 .id_table = tlan_pci_tbl,
394 .probe = tlan_init_one,
395 .remove = tlan_remove_one,
396 .suspend = tlan_suspend,
397 .resume = tlan_resume,
398};
399
400static int __init tlan_probe(void)
401{
402 int rc = -ENODEV;
403
404 pr_info("%s", tlan_banner);
405
406 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
407
408 /* Use new style PCI probing. Now the kernel will
409 do most of this for us */
410 rc = pci_register_driver(&tlan_driver);
411
412 if (rc != 0) {
413 pr_err("Could not register pci driver\n");
414 goto err_out_pci_free;
415 }
416
417 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
418 tlan_eisa_probe();
419
420 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
421 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
422 tlan_have_pci, tlan_have_eisa);
423
424 if (tlan_devices_installed == 0) {
425 rc = -ENODEV;
426 goto err_out_pci_unreg;
427 }
428 return 0;
429
430err_out_pci_unreg:
431 pci_unregister_driver(&tlan_driver);
432err_out_pci_free:
433 return rc;
434}
435
436
437static int tlan_init_one(struct pci_dev *pdev,
438 const struct pci_device_id *ent)
439{
440 return tlan_probe1(pdev, -1, -1, 0, ent);
441}
442
443
444/*
445***************************************************************
446* tlan_probe1
447*
448* Returns:
449* 0 on success, error code on error
450* Parms:
451* none
452*
453* The name is lower case to fit in with all the rest of
454* the netcard_probe names. This function looks for
455* another TLan based adapter, setting it up with the
456* allocated device struct if one is found.
457* tlan_probe has been ported to the new net API and
458* now allocates its own device structure. This function
459* is also used by modules.
460*
461**************************************************************/
462
463static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
464 const struct pci_device_id *ent)
465{
466
467 struct net_device *dev;
468 struct tlan_priv *priv;
469 u16 device_id;
470 int reg, rc = -ENODEV;
471
472#ifdef CONFIG_PCI
473 if (pdev) {
474 rc = pci_enable_device(pdev);
475 if (rc)
476 return rc;
477
478 rc = pci_request_regions(pdev, tlan_signature);
479 if (rc) {
480 pr_err("Could not reserve IO regions\n");
481 goto err_out;
482 }
483 }
484#endif /* CONFIG_PCI */
485
486 dev = alloc_etherdev(sizeof(struct tlan_priv));
487 if (dev == NULL) {
488 rc = -ENOMEM;
489 goto err_out_regions;
490 }
491 SET_NETDEV_DEV(dev, &pdev->dev);
492
493 priv = netdev_priv(dev);
494
495 priv->pci_dev = pdev;
496 priv->dev = dev;
497
498 /* Is this a PCI device? */
499 if (pdev) {
500 u32 pci_io_base = 0;
501
502 priv->adapter = &board_info[ent->driver_data];
503
504 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
505 if (rc) {
506 pr_err("No suitable PCI mapping available\n");
507 goto err_out_free_dev;
508 }
509
510 for (reg = 0; reg <= 5; reg++) {
511 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
512 pci_io_base = pci_resource_start(pdev, reg);
513 TLAN_DBG(TLAN_DEBUG_GNRL,
514 "IO mapping is available at %x.\n",
515 pci_io_base);
516 break;
517 }
518 }
519 if (!pci_io_base) {
520 pr_err("No IO mappings available\n");
521 rc = -EIO;
522 goto err_out_free_dev;
523 }
524
525 dev->base_addr = pci_io_base;
526 dev->irq = pdev->irq;
527 priv->adapter_rev = pdev->revision;
528 pci_set_master(pdev);
529 pci_set_drvdata(pdev, dev);
530
531 } else { /* EISA card */
532 /* This is a hack. We need to know which board structure
533 * is suited for this adapter */
534 device_id = inw(ioaddr + EISA_ID2);
535 if (device_id == 0x20F1) {
536 priv->adapter = &board_info[13]; /* NetFlex-3/E */
537 priv->adapter_rev = 23; /* TLAN 2.3 */
538 } else {
539 priv->adapter = &board_info[14];
540 priv->adapter_rev = 10; /* TLAN 1.0 */
541 }
542 dev->base_addr = ioaddr;
543 dev->irq = irq;
544 }
545
546 /* Kernel parameters */
547 if (dev->mem_start) {
548 priv->aui = dev->mem_start & 0x01;
549 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
550 : (dev->mem_start & 0x06) >> 1;
551 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
552 : (dev->mem_start & 0x18) >> 3;
553
554 if (priv->speed == 0x1)
555 priv->speed = TLAN_SPEED_10;
556 else if (priv->speed == 0x2)
557 priv->speed = TLAN_SPEED_100;
558
559 debug = priv->debug = dev->mem_end;
560 } else {
561 priv->aui = aui[boards_found];
562 priv->speed = speed[boards_found];
563 priv->duplex = duplex[boards_found];
564 priv->debug = debug;
565 }
566
567 /* This will be used when we get an adapter error from
568 * within our irq handler */
569 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
570
571 spin_lock_init(&priv->lock);
572
573 rc = tlan_init(dev);
574 if (rc) {
575 pr_err("Could not set up device\n");
576 goto err_out_free_dev;
577 }
578
579 rc = register_netdev(dev);
580 if (rc) {
581 pr_err("Could not register device\n");
582 goto err_out_uninit;
583 }
584
585
586 tlan_devices_installed++;
587 boards_found++;
588
589 /* pdev is NULL if this is an EISA device */
590 if (pdev)
591 tlan_have_pci++;
592 else {
593 priv->next_device = tlan_eisa_devices;
594 tlan_eisa_devices = dev;
595 tlan_have_eisa++;
596 }
597
598 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
599 (int)dev->irq,
600 (int)dev->base_addr,
601 priv->adapter->device_label,
602 priv->adapter_rev);
603 return 0;
604
605err_out_uninit:
606 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
607 priv->dma_storage_dma);
608err_out_free_dev:
609 free_netdev(dev);
610err_out_regions:
611#ifdef CONFIG_PCI
612 if (pdev)
613 pci_release_regions(pdev);
614err_out:
615#endif
616 if (pdev)
617 pci_disable_device(pdev);
618 return rc;
619}
620
621
622static void tlan_eisa_cleanup(void)
623{
624 struct net_device *dev;
625 struct tlan_priv *priv;
626
627 while (tlan_have_eisa) {
628 dev = tlan_eisa_devices;
629 priv = netdev_priv(dev);
630 if (priv->dma_storage) {
631 pci_free_consistent(priv->pci_dev, priv->dma_size,
632 priv->dma_storage,
633 priv->dma_storage_dma);
634 }
635 release_region(dev->base_addr, 0x10);
636 unregister_netdev(dev);
637 tlan_eisa_devices = priv->next_device;
638 free_netdev(dev);
639 tlan_have_eisa--;
640 }
641}
642
643
644static void __exit tlan_exit(void)
645{
646 pci_unregister_driver(&tlan_driver);
647
648 if (tlan_have_eisa)
649 tlan_eisa_cleanup();
650
651}
652
653
654/* Module loading/unloading */
655module_init(tlan_probe);
656module_exit(tlan_exit);
657
658
659
660/**************************************************************
661 * tlan_eisa_probe
662 *
663 * Returns: 0 on success, 1 otherwise
664 *
665 * Parms: None
666 *
667 *
668 * This functions probes for EISA devices and calls
669 * TLan_probe1 when one is found.
670 *
671 *************************************************************/
672
673static void __init tlan_eisa_probe(void)
674{
675 long ioaddr;
676 int rc = -ENODEV;
677 int irq;
678 u16 device_id;
679
680 if (!EISA_bus) {
681 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
682 return;
683 }
684
685 /* Loop through all slots of the EISA bus */
686 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
687
688 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
689 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
690 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
691 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
692
693
694 TLAN_DBG(TLAN_DEBUG_PROBE,
695 "Probing for EISA adapter at IO: 0x%4x : ",
696 (int) ioaddr);
697 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
698 goto out;
699
700 if (inw(ioaddr + EISA_ID) != 0x110E) {
701 release_region(ioaddr, 0x10);
702 goto out;
703 }
704
705 device_id = inw(ioaddr + EISA_ID2);
706 if (device_id != 0x20F1 && device_id != 0x40F1) {
707 release_region(ioaddr, 0x10);
708 goto out;
709 }
710
711 /* check if adapter is enabled */
712 if (inb(ioaddr + EISA_CR) != 0x1) {
713 release_region(ioaddr, 0x10);
714 goto out2;
715 }
716
717 if (debug == 0x10)
718 pr_info("Found one\n");
719
720
721 /* Get irq from board */
722 switch (inb(ioaddr + 0xcc0)) {
723 case(0x10):
724 irq = 5;
725 break;
726 case(0x20):
727 irq = 9;
728 break;
729 case(0x40):
730 irq = 10;
731 break;
732 case(0x80):
733 irq = 11;
734 break;
735 default:
736 goto out;
737 }
738
739
740 /* Setup the newly found eisa adapter */
741 rc = tlan_probe1(NULL, ioaddr, irq,
742 12, NULL);
743 continue;
744
745out:
746 if (debug == 0x10)
747 pr_info("None found\n");
748 continue;
749
750out2:
751 if (debug == 0x10)
752 pr_info("Card found but it is not enabled, skipping\n");
753 continue;
754
755 }
756
757}
758
759#ifdef CONFIG_NET_POLL_CONTROLLER
760static void tlan_poll(struct net_device *dev)
761{
762 disable_irq(dev->irq);
763 tlan_handle_interrupt(dev->irq, dev);
764 enable_irq(dev->irq);
765}
766#endif
767
768static const struct net_device_ops tlan_netdev_ops = {
769 .ndo_open = tlan_open,
770 .ndo_stop = tlan_close,
771 .ndo_start_xmit = tlan_start_tx,
772 .ndo_tx_timeout = tlan_tx_timeout,
773 .ndo_get_stats = tlan_get_stats,
774 .ndo_set_rx_mode = tlan_set_multicast_list,
775 .ndo_do_ioctl = tlan_ioctl,
776 .ndo_set_mac_address = eth_mac_addr,
777 .ndo_validate_addr = eth_validate_addr,
778#ifdef CONFIG_NET_POLL_CONTROLLER
779 .ndo_poll_controller = tlan_poll,
780#endif
781};
782
783static void tlan_get_drvinfo(struct net_device *dev,
784 struct ethtool_drvinfo *info)
785{
786 struct tlan_priv *priv = netdev_priv(dev);
787
788 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
789 if (priv->pci_dev)
790 strlcpy(info->bus_info, pci_name(priv->pci_dev),
791 sizeof(info->bus_info));
792 else
793 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
794}
795
796static int tlan_get_eeprom_len(struct net_device *dev)
797{
798 return TLAN_EEPROM_SIZE;
799}
800
801static int tlan_get_eeprom(struct net_device *dev,
802 struct ethtool_eeprom *eeprom, u8 *data)
803{
804 int i;
805
806 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
807 if (tlan_ee_read_byte(dev, i, &data[i]))
808 return -EIO;
809
810 return 0;
811}
812
813static const struct ethtool_ops tlan_ethtool_ops = {
814 .get_drvinfo = tlan_get_drvinfo,
815 .get_link = ethtool_op_get_link,
816 .get_eeprom_len = tlan_get_eeprom_len,
817 .get_eeprom = tlan_get_eeprom,
818};
819
820/***************************************************************
821 * tlan_init
822 *
823 * Returns:
824 * 0 on success, error code otherwise.
825 * Parms:
826 * dev The structure of the device to be
827 * init'ed.
828 *
829 * This function completes the initialization of the
830 * device structure and driver. It reserves the IO
831 * addresses, allocates memory for the lists and bounce
832 * buffers, retrieves the MAC address from the eeprom
833 * and assignes the device's methods.
834 *
835 **************************************************************/
836
837static int tlan_init(struct net_device *dev)
838{
839 int dma_size;
840 int err;
841 int i;
842 struct tlan_priv *priv;
843
844 priv = netdev_priv(dev);
845
846 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
847 * (sizeof(struct tlan_list));
848 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
849 dma_size,
850 &priv->dma_storage_dma);
851 priv->dma_size = dma_size;
852
853 if (priv->dma_storage == NULL) {
854 pr_err("Could not allocate lists and buffers for %s\n",
855 dev->name);
856 return -ENOMEM;
857 }
858 priv->rx_list = (struct tlan_list *)
859 ALIGN((unsigned long)priv->dma_storage, 8);
860 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
861 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
862 priv->tx_list_dma =
863 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
864
865 err = 0;
866 for (i = 0; i < ETH_ALEN; i++)
867 err |= tlan_ee_read_byte(dev,
868 (u8) priv->adapter->addr_ofs + i,
869 (u8 *) &dev->dev_addr[i]);
870 if (err) {
871 pr_err("%s: Error reading MAC from eeprom: %d\n",
872 dev->name, err);
873 }
874 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
875 if (priv->adapter->addr_ofs == 0xf8) {
876 for (i = 0; i < ETH_ALEN; i += 2) {
877 char tmp = dev->dev_addr[i];
878 dev->dev_addr[i] = dev->dev_addr[i + 1];
879 dev->dev_addr[i + 1] = tmp;
880 }
881 }
882
883 netif_carrier_off(dev);
884
885 /* Device methods */
886 dev->netdev_ops = &tlan_netdev_ops;
887 dev->ethtool_ops = &tlan_ethtool_ops;
888 dev->watchdog_timeo = TX_TIMEOUT;
889
890 return 0;
891
892}
893
894
895
896
897/***************************************************************
898 * tlan_open
899 *
900 * Returns:
901 * 0 on success, error code otherwise.
902 * Parms:
903 * dev Structure of device to be opened.
904 *
905 * This routine puts the driver and TLAN adapter in a
906 * state where it is ready to send and receive packets.
907 * It allocates the IRQ, resets and brings the adapter
908 * out of reset, and allows interrupts. It also delays
909 * the startup for autonegotiation or sends a Rx GO
910 * command to the adapter, as appropriate.
911 *
912 **************************************************************/
913
914static int tlan_open(struct net_device *dev)
915{
916 struct tlan_priv *priv = netdev_priv(dev);
917 int err;
918
919 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
920 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
921 dev->name, dev);
922
923 if (err) {
924 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
925 dev->irq);
926 return err;
927 }
928
929 timer_setup(&priv->timer, NULL, 0);
930 timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
931
932 tlan_start(dev);
933
934 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
935 dev->name, priv->tlan_rev);
936
937 return 0;
938
939}
940
941
942
943/**************************************************************
944 * tlan_ioctl
945 *
946 * Returns:
947 * 0 on success, error code otherwise
948 * Params:
949 * dev structure of device to receive ioctl.
950 *
951 * rq ifreq structure to hold userspace data.
952 *
953 * cmd ioctl command.
954 *
955 *
956 *************************************************************/
957
958static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
959{
960 struct tlan_priv *priv = netdev_priv(dev);
961 struct mii_ioctl_data *data = if_mii(rq);
962 u32 phy = priv->phy[priv->phy_num];
963
964 if (!priv->phy_online)
965 return -EAGAIN;
966
967 switch (cmd) {
968 case SIOCGMIIPHY: /* get address of MII PHY in use. */
969 data->phy_id = phy;
970 /* fall through */
971
972
973 case SIOCGMIIREG: /* read MII PHY register. */
974 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
975 data->reg_num & 0x1f, &data->val_out);
976 return 0;
977
978
979 case SIOCSMIIREG: /* write MII PHY register. */
980 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
981 data->reg_num & 0x1f, data->val_in);
982 return 0;
983 default:
984 return -EOPNOTSUPP;
985 }
986}
987
988
989/***************************************************************
990 * tlan_tx_timeout
991 *
992 * Returns: nothing
993 *
994 * Params:
995 * dev structure of device which timed out
996 * during transmit.
997 *
998 **************************************************************/
999
1000static void tlan_tx_timeout(struct net_device *dev)
1001{
1002
1003 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1004
1005 /* Ok so we timed out, lets see what we can do about it...*/
1006 tlan_free_lists(dev);
1007 tlan_reset_lists(dev);
1008 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1009 tlan_reset_adapter(dev);
1010 netif_trans_update(dev); /* prevent tx timeout */
1011 netif_wake_queue(dev);
1012
1013}
1014
1015
1016/***************************************************************
1017 * tlan_tx_timeout_work
1018 *
1019 * Returns: nothing
1020 *
1021 * Params:
1022 * work work item of device which timed out
1023 *
1024 **************************************************************/
1025
1026static void tlan_tx_timeout_work(struct work_struct *work)
1027{
1028 struct tlan_priv *priv =
1029 container_of(work, struct tlan_priv, tlan_tqueue);
1030
1031 tlan_tx_timeout(priv->dev);
1032}
1033
1034
1035
1036/***************************************************************
1037 * tlan_start_tx
1038 *
1039 * Returns:
1040 * 0 on success, non-zero on failure.
1041 * Parms:
1042 * skb A pointer to the sk_buff containing the
1043 * frame to be sent.
1044 * dev The device to send the data on.
1045 *
1046 * This function adds a frame to the Tx list to be sent
1047 * ASAP. First it verifies that the adapter is ready and
1048 * there is room in the queue. Then it sets up the next
1049 * available list, copies the frame to the corresponding
1050 * buffer. If the adapter Tx channel is idle, it gives
1051 * the adapter a Tx Go command on the list, otherwise it
1052 * sets the forward address of the previous list to point
1053 * to this one. Then it frees the sk_buff.
1054 *
1055 **************************************************************/
1056
1057static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1058{
1059 struct tlan_priv *priv = netdev_priv(dev);
1060 dma_addr_t tail_list_phys;
1061 struct tlan_list *tail_list;
1062 unsigned long flags;
1063 unsigned int txlen;
1064
1065 if (!priv->phy_online) {
1066 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1067 dev->name);
1068 dev_kfree_skb_any(skb);
1069 return NETDEV_TX_OK;
1070 }
1071
1072 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1073 return NETDEV_TX_OK;
1074 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1075
1076 tail_list = priv->tx_list + priv->tx_tail;
1077 tail_list_phys =
1078 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1079
1080 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1081 TLAN_DBG(TLAN_DEBUG_TX,
1082 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1083 dev->name, priv->tx_head, priv->tx_tail);
1084 netif_stop_queue(dev);
1085 priv->tx_busy_count++;
1086 return NETDEV_TX_BUSY;
1087 }
1088
1089 tail_list->forward = 0;
1090
1091 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1092 skb->data, txlen,
1093 PCI_DMA_TODEVICE);
1094 tlan_store_skb(tail_list, skb);
1095
1096 tail_list->frame_size = (u16) txlen;
1097 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1098 tail_list->buffer[1].count = 0;
1099 tail_list->buffer[1].address = 0;
1100
1101 spin_lock_irqsave(&priv->lock, flags);
1102 tail_list->c_stat = TLAN_CSTAT_READY;
1103 if (!priv->tx_in_progress) {
1104 priv->tx_in_progress = 1;
1105 TLAN_DBG(TLAN_DEBUG_TX,
1106 "TRANSMIT: Starting TX on buffer %d\n",
1107 priv->tx_tail);
1108 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1109 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1110 } else {
1111 TLAN_DBG(TLAN_DEBUG_TX,
1112 "TRANSMIT: Adding buffer %d to TX channel\n",
1113 priv->tx_tail);
1114 if (priv->tx_tail == 0) {
1115 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1116 = tail_list_phys;
1117 } else {
1118 (priv->tx_list + (priv->tx_tail - 1))->forward
1119 = tail_list_phys;
1120 }
1121 }
1122 spin_unlock_irqrestore(&priv->lock, flags);
1123
1124 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1125
1126 return NETDEV_TX_OK;
1127
1128}
1129
1130
1131
1132
1133/***************************************************************
1134 * tlan_handle_interrupt
1135 *
1136 * Returns:
1137 * Nothing
1138 * Parms:
1139 * irq The line on which the interrupt
1140 * occurred.
1141 * dev_id A pointer to the device assigned to
1142 * this irq line.
1143 *
1144 * This function handles an interrupt generated by its
1145 * assigned TLAN adapter. The function deactivates
1146 * interrupts on its adapter, records the type of
1147 * interrupt, executes the appropriate subhandler, and
1148 * acknowdges the interrupt to the adapter (thus
1149 * re-enabling adapter interrupts.
1150 *
1151 **************************************************************/
1152
1153static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1154{
1155 struct net_device *dev = dev_id;
1156 struct tlan_priv *priv = netdev_priv(dev);
1157 u16 host_int;
1158 u16 type;
1159
1160 spin_lock(&priv->lock);
1161
1162 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1163 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1164 if (type) {
1165 u32 ack;
1166 u32 host_cmd;
1167
1168 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1169 ack = tlan_int_vector[type](dev, host_int);
1170
1171 if (ack) {
1172 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1173 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1174 }
1175 }
1176
1177 spin_unlock(&priv->lock);
1178
1179 return IRQ_RETVAL(type);
1180}
1181
1182
1183
1184
1185/***************************************************************
1186 * tlan_close
1187 *
1188 * Returns:
1189 * An error code.
1190 * Parms:
1191 * dev The device structure of the device to
1192 * close.
1193 *
1194 * This function shuts down the adapter. It records any
1195 * stats, puts the adapter into reset state, deactivates
1196 * its time as needed, and frees the irq it is using.
1197 *
1198 **************************************************************/
1199
1200static int tlan_close(struct net_device *dev)
1201{
1202 tlan_stop(dev);
1203
1204 free_irq(dev->irq, dev);
1205 tlan_free_lists(dev);
1206 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1207
1208 return 0;
1209
1210}
1211
1212
1213
1214
1215/***************************************************************
1216 * tlan_get_stats
1217 *
1218 * Returns:
1219 * A pointer to the device's statistics structure.
1220 * Parms:
1221 * dev The device structure to return the
1222 * stats for.
1223 *
1224 * This function updates the devices statistics by reading
1225 * the TLAN chip's onboard registers. Then it returns the
1226 * address of the statistics structure.
1227 *
1228 **************************************************************/
1229
1230static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1231{
1232 struct tlan_priv *priv = netdev_priv(dev);
1233 int i;
1234
1235 /* Should only read stats if open ? */
1236 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1237
1238 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1239 priv->rx_eoc_count);
1240 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1241 priv->tx_busy_count);
1242 if (debug & TLAN_DEBUG_GNRL) {
1243 tlan_print_dio(dev->base_addr);
1244 tlan_phy_print(dev);
1245 }
1246 if (debug & TLAN_DEBUG_LIST) {
1247 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1248 tlan_print_list(priv->rx_list + i, "RX", i);
1249 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1250 tlan_print_list(priv->tx_list + i, "TX", i);
1251 }
1252
1253 return &dev->stats;
1254
1255}
1256
1257
1258
1259
1260/***************************************************************
1261 * tlan_set_multicast_list
1262 *
1263 * Returns:
1264 * Nothing
1265 * Parms:
1266 * dev The device structure to set the
1267 * multicast list for.
1268 *
1269 * This function sets the TLAN adaptor to various receive
1270 * modes. If the IFF_PROMISC flag is set, promiscuous
1271 * mode is acitviated. Otherwise, promiscuous mode is
1272 * turned off. If the IFF_ALLMULTI flag is set, then
1273 * the hash table is set to receive all group addresses.
1274 * Otherwise, the first three multicast addresses are
1275 * stored in AREG_1-3, and the rest are selected via the
1276 * hash table, as necessary.
1277 *
1278 **************************************************************/
1279
1280static void tlan_set_multicast_list(struct net_device *dev)
1281{
1282 struct netdev_hw_addr *ha;
1283 u32 hash1 = 0;
1284 u32 hash2 = 0;
1285 int i;
1286 u32 offset;
1287 u8 tmp;
1288
1289 if (dev->flags & IFF_PROMISC) {
1290 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1291 tlan_dio_write8(dev->base_addr,
1292 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1293 } else {
1294 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1295 tlan_dio_write8(dev->base_addr,
1296 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1297 if (dev->flags & IFF_ALLMULTI) {
1298 for (i = 0; i < 3; i++)
1299 tlan_set_mac(dev, i + 1, NULL);
1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1301 0xffffffff);
1302 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1303 0xffffffff);
1304 } else {
1305 i = 0;
1306 netdev_for_each_mc_addr(ha, dev) {
1307 if (i < 3) {
1308 tlan_set_mac(dev, i + 1,
1309 (char *) &ha->addr);
1310 } else {
1311 offset =
1312 tlan_hash_func((u8 *)&ha->addr);
1313 if (offset < 32)
1314 hash1 |= (1 << offset);
1315 else
1316 hash2 |= (1 << (offset - 32));
1317 }
1318 i++;
1319 }
1320 for ( ; i < 3; i++)
1321 tlan_set_mac(dev, i + 1, NULL);
1322 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1323 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1324 }
1325 }
1326
1327}
1328
1329
1330
1331/*****************************************************************************
1332******************************************************************************
1333
1334ThunderLAN driver interrupt vectors and table
1335
1336please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1337Programmer's Guide" for more informations on handling interrupts
1338generated by TLAN based adapters.
1339
1340******************************************************************************
1341*****************************************************************************/
1342
1343
1344
1345
1346/***************************************************************
1347 * tlan_handle_tx_eof
1348 *
1349 * Returns:
1350 * 1
1351 * Parms:
1352 * dev Device assigned the IRQ that was
1353 * raised.
1354 * host_int The contents of the HOST_INT
1355 * port.
1356 *
1357 * This function handles Tx EOF interrupts which are raised
1358 * by the adapter when it has completed sending the
1359 * contents of a buffer. If detemines which list/buffer
1360 * was completed and resets it. If the buffer was the last
1361 * in the channel (EOC), then the function checks to see if
1362 * another buffer is ready to send, and if so, sends a Tx
1363 * Go command. Finally, the driver activates/continues the
1364 * activity LED.
1365 *
1366 **************************************************************/
1367
1368static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1369{
1370 struct tlan_priv *priv = netdev_priv(dev);
1371 int eoc = 0;
1372 struct tlan_list *head_list;
1373 dma_addr_t head_list_phys;
1374 u32 ack = 0;
1375 u16 tmp_c_stat;
1376
1377 TLAN_DBG(TLAN_DEBUG_TX,
1378 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1379 priv->tx_head, priv->tx_tail);
1380 head_list = priv->tx_list + priv->tx_head;
1381
1382 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1383 && (ack < 255)) {
1384 struct sk_buff *skb = tlan_get_skb(head_list);
1385
1386 ack++;
1387 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1388 max(skb->len,
1389 (unsigned int)TLAN_MIN_FRAME_SIZE),
1390 PCI_DMA_TODEVICE);
1391 dev_kfree_skb_any(skb);
1392 head_list->buffer[8].address = 0;
1393 head_list->buffer[9].address = 0;
1394
1395 if (tmp_c_stat & TLAN_CSTAT_EOC)
1396 eoc = 1;
1397
1398 dev->stats.tx_bytes += head_list->frame_size;
1399
1400 head_list->c_stat = TLAN_CSTAT_UNUSED;
1401 netif_start_queue(dev);
1402 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1403 head_list = priv->tx_list + priv->tx_head;
1404 }
1405
1406 if (!ack)
1407 netdev_info(dev,
1408 "Received interrupt for uncompleted TX frame\n");
1409
1410 if (eoc) {
1411 TLAN_DBG(TLAN_DEBUG_TX,
1412 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1413 priv->tx_head, priv->tx_tail);
1414 head_list = priv->tx_list + priv->tx_head;
1415 head_list_phys = priv->tx_list_dma
1416 + sizeof(struct tlan_list)*priv->tx_head;
1417 if ((head_list->c_stat & TLAN_CSTAT_READY)
1418 == TLAN_CSTAT_READY) {
1419 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1420 ack |= TLAN_HC_GO;
1421 } else {
1422 priv->tx_in_progress = 0;
1423 }
1424 }
1425
1426 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1427 tlan_dio_write8(dev->base_addr,
1428 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1429 if (priv->timer.function == NULL) {
1430 priv->timer.function = tlan_timer;
1431 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1432 priv->timer_set_at = jiffies;
1433 priv->timer_type = TLAN_TIMER_ACTIVITY;
1434 add_timer(&priv->timer);
1435 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1436 priv->timer_set_at = jiffies;
1437 }
1438 }
1439
1440 return ack;
1441
1442}
1443
1444
1445
1446
1447/***************************************************************
1448 * TLan_HandleStatOverflow
1449 *
1450 * Returns:
1451 * 1
1452 * Parms:
1453 * dev Device assigned the IRQ that was
1454 * raised.
1455 * host_int The contents of the HOST_INT
1456 * port.
1457 *
1458 * This function handles the Statistics Overflow interrupt
1459 * which means that one or more of the TLAN statistics
1460 * registers has reached 1/2 capacity and needs to be read.
1461 *
1462 **************************************************************/
1463
1464static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1465{
1466 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1467
1468 return 1;
1469
1470}
1471
1472
1473
1474
1475/***************************************************************
1476 * TLan_HandleRxEOF
1477 *
1478 * Returns:
1479 * 1
1480 * Parms:
1481 * dev Device assigned the IRQ that was
1482 * raised.
1483 * host_int The contents of the HOST_INT
1484 * port.
1485 *
1486 * This function handles the Rx EOF interrupt which
1487 * indicates a frame has been received by the adapter from
1488 * the net and the frame has been transferred to memory.
1489 * The function determines the bounce buffer the frame has
1490 * been loaded into, creates a new sk_buff big enough to
1491 * hold the frame, and sends it to protocol stack. It
1492 * then resets the used buffer and appends it to the end
1493 * of the list. If the frame was the last in the Rx
1494 * channel (EOC), the function restarts the receive channel
1495 * by sending an Rx Go command to the adapter. Then it
1496 * activates/continues the activity LED.
1497 *
1498 **************************************************************/
1499
1500static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1501{
1502 struct tlan_priv *priv = netdev_priv(dev);
1503 u32 ack = 0;
1504 int eoc = 0;
1505 struct tlan_list *head_list;
1506 struct sk_buff *skb;
1507 struct tlan_list *tail_list;
1508 u16 tmp_c_stat;
1509 dma_addr_t head_list_phys;
1510
1511 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1512 priv->rx_head, priv->rx_tail);
1513 head_list = priv->rx_list + priv->rx_head;
1514 head_list_phys =
1515 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1516
1517 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1518 && (ack < 255)) {
1519 dma_addr_t frame_dma = head_list->buffer[0].address;
1520 u32 frame_size = head_list->frame_size;
1521 struct sk_buff *new_skb;
1522
1523 ack++;
1524 if (tmp_c_stat & TLAN_CSTAT_EOC)
1525 eoc = 1;
1526
1527 new_skb = netdev_alloc_skb_ip_align(dev,
1528 TLAN_MAX_FRAME_SIZE + 5);
1529 if (!new_skb)
1530 goto drop_and_reuse;
1531
1532 skb = tlan_get_skb(head_list);
1533 pci_unmap_single(priv->pci_dev, frame_dma,
1534 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1535 skb_put(skb, frame_size);
1536
1537 dev->stats.rx_bytes += frame_size;
1538
1539 skb->protocol = eth_type_trans(skb, dev);
1540 netif_rx(skb);
1541
1542 head_list->buffer[0].address =
1543 pci_map_single(priv->pci_dev, new_skb->data,
1544 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1545
1546 tlan_store_skb(head_list, new_skb);
1547drop_and_reuse:
1548 head_list->forward = 0;
1549 head_list->c_stat = 0;
1550 tail_list = priv->rx_list + priv->rx_tail;
1551 tail_list->forward = head_list_phys;
1552
1553 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1554 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1555 head_list = priv->rx_list + priv->rx_head;
1556 head_list_phys = priv->rx_list_dma
1557 + sizeof(struct tlan_list)*priv->rx_head;
1558 }
1559
1560 if (!ack)
1561 netdev_info(dev,
1562 "Received interrupt for uncompleted RX frame\n");
1563
1564
1565 if (eoc) {
1566 TLAN_DBG(TLAN_DEBUG_RX,
1567 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1568 priv->rx_head, priv->rx_tail);
1569 head_list = priv->rx_list + priv->rx_head;
1570 head_list_phys = priv->rx_list_dma
1571 + sizeof(struct tlan_list)*priv->rx_head;
1572 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1573 ack |= TLAN_HC_GO | TLAN_HC_RT;
1574 priv->rx_eoc_count++;
1575 }
1576
1577 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1578 tlan_dio_write8(dev->base_addr,
1579 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1580 if (priv->timer.function == NULL) {
1581 priv->timer.function = tlan_timer;
1582 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1583 priv->timer_set_at = jiffies;
1584 priv->timer_type = TLAN_TIMER_ACTIVITY;
1585 add_timer(&priv->timer);
1586 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1587 priv->timer_set_at = jiffies;
1588 }
1589 }
1590
1591 return ack;
1592
1593}
1594
1595
1596
1597
1598/***************************************************************
1599 * tlan_handle_dummy
1600 *
1601 * Returns:
1602 * 1
1603 * Parms:
1604 * dev Device assigned the IRQ that was
1605 * raised.
1606 * host_int The contents of the HOST_INT
1607 * port.
1608 *
1609 * This function handles the Dummy interrupt, which is
1610 * raised whenever a test interrupt is generated by setting
1611 * the Req_Int bit of HOST_CMD to 1.
1612 *
1613 **************************************************************/
1614
1615static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1616{
1617 netdev_info(dev, "Test interrupt\n");
1618 return 1;
1619
1620}
1621
1622
1623
1624
1625/***************************************************************
1626 * tlan_handle_tx_eoc
1627 *
1628 * Returns:
1629 * 1
1630 * Parms:
1631 * dev Device assigned the IRQ that was
1632 * raised.
1633 * host_int The contents of the HOST_INT
1634 * port.
1635 *
1636 * This driver is structured to determine EOC occurrences by
1637 * reading the CSTAT member of the list structure. Tx EOC
1638 * interrupts are disabled via the DIO INTDIS register.
1639 * However, TLAN chips before revision 3.0 didn't have this
1640 * functionality, so process EOC events if this is the
1641 * case.
1642 *
1643 **************************************************************/
1644
1645static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1646{
1647 struct tlan_priv *priv = netdev_priv(dev);
1648 struct tlan_list *head_list;
1649 dma_addr_t head_list_phys;
1650 u32 ack = 1;
1651
1652 if (priv->tlan_rev < 0x30) {
1653 TLAN_DBG(TLAN_DEBUG_TX,
1654 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1655 priv->tx_head, priv->tx_tail);
1656 head_list = priv->tx_list + priv->tx_head;
1657 head_list_phys = priv->tx_list_dma
1658 + sizeof(struct tlan_list)*priv->tx_head;
1659 if ((head_list->c_stat & TLAN_CSTAT_READY)
1660 == TLAN_CSTAT_READY) {
1661 netif_stop_queue(dev);
1662 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1663 ack |= TLAN_HC_GO;
1664 } else {
1665 priv->tx_in_progress = 0;
1666 }
1667 }
1668
1669 return ack;
1670
1671}
1672
1673
1674
1675
1676/***************************************************************
1677 * tlan_handle_status_check
1678 *
1679 * Returns:
1680 * 0 if Adapter check, 1 if Network Status check.
1681 * Parms:
1682 * dev Device assigned the IRQ that was
1683 * raised.
1684 * host_int The contents of the HOST_INT
1685 * port.
1686 *
1687 * This function handles Adapter Check/Network Status
1688 * interrupts generated by the adapter. It checks the
1689 * vector in the HOST_INT register to determine if it is
1690 * an Adapter Check interrupt. If so, it resets the
1691 * adapter. Otherwise it clears the status registers
1692 * and services the PHY.
1693 *
1694 **************************************************************/
1695
1696static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1697{
1698 struct tlan_priv *priv = netdev_priv(dev);
1699 u32 ack;
1700 u32 error;
1701 u8 net_sts;
1702 u32 phy;
1703 u16 tlphy_ctl;
1704 u16 tlphy_sts;
1705
1706 ack = 1;
1707 if (host_int & TLAN_HI_IV_MASK) {
1708 netif_stop_queue(dev);
1709 error = inl(dev->base_addr + TLAN_CH_PARM);
1710 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1711 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1712 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1713
1714 schedule_work(&priv->tlan_tqueue);
1715
1716 netif_wake_queue(dev);
1717 ack = 0;
1718 } else {
1719 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1720 phy = priv->phy[priv->phy_num];
1721
1722 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1723 if (net_sts) {
1724 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1725 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1726 dev->name, (unsigned) net_sts);
1727 }
1728 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1729 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1730 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1731 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1732 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1733 tlphy_ctl |= TLAN_TC_SWAPOL;
1734 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1735 tlphy_ctl);
1736 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1737 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1738 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1739 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1740 tlphy_ctl);
1741 }
1742
1743 if (debug)
1744 tlan_phy_print(dev);
1745 }
1746 }
1747
1748 return ack;
1749
1750}
1751
1752
1753
1754
1755/***************************************************************
1756 * tlan_handle_rx_eoc
1757 *
1758 * Returns:
1759 * 1
1760 * Parms:
1761 * dev Device assigned the IRQ that was
1762 * raised.
1763 * host_int The contents of the HOST_INT
1764 * port.
1765 *
1766 * This driver is structured to determine EOC occurrences by
1767 * reading the CSTAT member of the list structure. Rx EOC
1768 * interrupts are disabled via the DIO INTDIS register.
1769 * However, TLAN chips before revision 3.0 didn't have this
1770 * CSTAT member or a INTDIS register, so if this chip is
1771 * pre-3.0, process EOC interrupts normally.
1772 *
1773 **************************************************************/
1774
1775static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1776{
1777 struct tlan_priv *priv = netdev_priv(dev);
1778 dma_addr_t head_list_phys;
1779 u32 ack = 1;
1780
1781 if (priv->tlan_rev < 0x30) {
1782 TLAN_DBG(TLAN_DEBUG_RX,
1783 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1784 priv->rx_head, priv->rx_tail);
1785 head_list_phys = priv->rx_list_dma
1786 + sizeof(struct tlan_list)*priv->rx_head;
1787 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1788 ack |= TLAN_HC_GO | TLAN_HC_RT;
1789 priv->rx_eoc_count++;
1790 }
1791
1792 return ack;
1793
1794}
1795
1796
1797
1798
1799/*****************************************************************************
1800******************************************************************************
1801
1802ThunderLAN driver timer function
1803
1804******************************************************************************
1805*****************************************************************************/
1806
1807
1808/***************************************************************
1809 * tlan_timer
1810 *
1811 * Returns:
1812 * Nothing
1813 * Parms:
1814 * data A value given to add timer when
1815 * add_timer was called.
1816 *
1817 * This function handles timed functionality for the
1818 * TLAN driver. The two current timer uses are for
1819 * delaying for autonegotionation and driving the ACT LED.
1820 * - Autonegotiation requires being allowed about
1821 * 2 1/2 seconds before attempting to transmit a
1822 * packet. It would be a very bad thing to hang
1823 * the kernel this long, so the driver doesn't
1824 * allow transmission 'til after this time, for
1825 * certain PHYs. It would be much nicer if all
1826 * PHYs were interrupt-capable like the internal
1827 * PHY.
1828 * - The ACT LED, which shows adapter activity, is
1829 * driven by the driver, and so must be left on
1830 * for a short period to power up the LED so it
1831 * can be seen. This delay can be changed by
1832 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1833 * if desired. 100 ms produces a slightly
1834 * sluggish response.
1835 *
1836 **************************************************************/
1837
1838static void tlan_timer(struct timer_list *t)
1839{
1840 struct tlan_priv *priv = from_timer(priv, t, timer);
1841 struct net_device *dev = priv->dev;
1842 u32 elapsed;
1843 unsigned long flags = 0;
1844
1845 priv->timer.function = NULL;
1846
1847 switch (priv->timer_type) {
1848 case TLAN_TIMER_PHY_PDOWN:
1849 tlan_phy_power_down(dev);
1850 break;
1851 case TLAN_TIMER_PHY_PUP:
1852 tlan_phy_power_up(dev);
1853 break;
1854 case TLAN_TIMER_PHY_RESET:
1855 tlan_phy_reset(dev);
1856 break;
1857 case TLAN_TIMER_PHY_START_LINK:
1858 tlan_phy_start_link(dev);
1859 break;
1860 case TLAN_TIMER_PHY_FINISH_AN:
1861 tlan_phy_finish_auto_neg(dev);
1862 break;
1863 case TLAN_TIMER_FINISH_RESET:
1864 tlan_finish_reset(dev);
1865 break;
1866 case TLAN_TIMER_ACTIVITY:
1867 spin_lock_irqsave(&priv->lock, flags);
1868 if (priv->timer.function == NULL) {
1869 elapsed = jiffies - priv->timer_set_at;
1870 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1871 tlan_dio_write8(dev->base_addr,
1872 TLAN_LED_REG, TLAN_LED_LINK);
1873 } else {
1874 priv->timer.expires = priv->timer_set_at
1875 + TLAN_TIMER_ACT_DELAY;
1876 spin_unlock_irqrestore(&priv->lock, flags);
1877 add_timer(&priv->timer);
1878 break;
1879 }
1880 }
1881 spin_unlock_irqrestore(&priv->lock, flags);
1882 break;
1883 default:
1884 break;
1885 }
1886
1887}
1888
1889
1890/*****************************************************************************
1891******************************************************************************
1892
1893ThunderLAN driver adapter related routines
1894
1895******************************************************************************
1896*****************************************************************************/
1897
1898
1899/***************************************************************
1900 * tlan_reset_lists
1901 *
1902 * Returns:
1903 * Nothing
1904 * Parms:
1905 * dev The device structure with the list
1906 * structures to be reset.
1907 *
1908 * This routine sets the variables associated with managing
1909 * the TLAN lists to their initial values.
1910 *
1911 **************************************************************/
1912
1913static void tlan_reset_lists(struct net_device *dev)
1914{
1915 struct tlan_priv *priv = netdev_priv(dev);
1916 int i;
1917 struct tlan_list *list;
1918 dma_addr_t list_phys;
1919 struct sk_buff *skb;
1920
1921 priv->tx_head = 0;
1922 priv->tx_tail = 0;
1923 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1924 list = priv->tx_list + i;
1925 list->c_stat = TLAN_CSTAT_UNUSED;
1926 list->buffer[0].address = 0;
1927 list->buffer[2].count = 0;
1928 list->buffer[2].address = 0;
1929 list->buffer[8].address = 0;
1930 list->buffer[9].address = 0;
1931 }
1932
1933 priv->rx_head = 0;
1934 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1935 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1936 list = priv->rx_list + i;
1937 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1938 list->c_stat = TLAN_CSTAT_READY;
1939 list->frame_size = TLAN_MAX_FRAME_SIZE;
1940 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1941 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1942 if (!skb)
1943 break;
1944
1945 list->buffer[0].address = pci_map_single(priv->pci_dev,
1946 skb->data,
1947 TLAN_MAX_FRAME_SIZE,
1948 PCI_DMA_FROMDEVICE);
1949 tlan_store_skb(list, skb);
1950 list->buffer[1].count = 0;
1951 list->buffer[1].address = 0;
1952 list->forward = list_phys + sizeof(struct tlan_list);
1953 }
1954
1955 /* in case ran out of memory early, clear bits */
1956 while (i < TLAN_NUM_RX_LISTS) {
1957 tlan_store_skb(priv->rx_list + i, NULL);
1958 ++i;
1959 }
1960 list->forward = 0;
1961
1962}
1963
1964
1965static void tlan_free_lists(struct net_device *dev)
1966{
1967 struct tlan_priv *priv = netdev_priv(dev);
1968 int i;
1969 struct tlan_list *list;
1970 struct sk_buff *skb;
1971
1972 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1973 list = priv->tx_list + i;
1974 skb = tlan_get_skb(list);
1975 if (skb) {
1976 pci_unmap_single(
1977 priv->pci_dev,
1978 list->buffer[0].address,
1979 max(skb->len,
1980 (unsigned int)TLAN_MIN_FRAME_SIZE),
1981 PCI_DMA_TODEVICE);
1982 dev_kfree_skb_any(skb);
1983 list->buffer[8].address = 0;
1984 list->buffer[9].address = 0;
1985 }
1986 }
1987
1988 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1989 list = priv->rx_list + i;
1990 skb = tlan_get_skb(list);
1991 if (skb) {
1992 pci_unmap_single(priv->pci_dev,
1993 list->buffer[0].address,
1994 TLAN_MAX_FRAME_SIZE,
1995 PCI_DMA_FROMDEVICE);
1996 dev_kfree_skb_any(skb);
1997 list->buffer[8].address = 0;
1998 list->buffer[9].address = 0;
1999 }
2000 }
2001}
2002
2003
2004
2005
2006/***************************************************************
2007 * tlan_print_dio
2008 *
2009 * Returns:
2010 * Nothing
2011 * Parms:
2012 * io_base Base IO port of the device of
2013 * which to print DIO registers.
2014 *
2015 * This function prints out all the internal (DIO)
2016 * registers of a TLAN chip.
2017 *
2018 **************************************************************/
2019
2020static void tlan_print_dio(u16 io_base)
2021{
2022 u32 data0, data1;
2023 int i;
2024
2025 pr_info("Contents of internal registers for io base 0x%04hx\n",
2026 io_base);
2027 pr_info("Off. +0 +4\n");
2028 for (i = 0; i < 0x4C; i += 8) {
2029 data0 = tlan_dio_read32(io_base, i);
2030 data1 = tlan_dio_read32(io_base, i + 0x4);
2031 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2032 }
2033
2034}
2035
2036
2037
2038
2039/***************************************************************
2040 * TLan_PrintList
2041 *
2042 * Returns:
2043 * Nothing
2044 * Parms:
2045 * list A pointer to the struct tlan_list structure to
2046 * be printed.
2047 * type A string to designate type of list,
2048 * "Rx" or "Tx".
2049 * num The index of the list.
2050 *
2051 * This function prints out the contents of the list
2052 * pointed to by the list parameter.
2053 *
2054 **************************************************************/
2055
2056static void tlan_print_list(struct tlan_list *list, char *type, int num)
2057{
2058 int i;
2059
2060 pr_info("%s List %d at %p\n", type, num, list);
2061 pr_info(" Forward = 0x%08x\n", list->forward);
2062 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2063 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2064 /* for (i = 0; i < 10; i++) { */
2065 for (i = 0; i < 2; i++) {
2066 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2067 i, list->buffer[i].count, list->buffer[i].address);
2068 }
2069
2070}
2071
2072
2073
2074
2075/***************************************************************
2076 * tlan_read_and_clear_stats
2077 *
2078 * Returns:
2079 * Nothing
2080 * Parms:
2081 * dev Pointer to device structure of adapter
2082 * to which to read stats.
2083 * record Flag indicating whether to add
2084 *
2085 * This functions reads all the internal status registers
2086 * of the TLAN chip, which clears them as a side effect.
2087 * It then either adds the values to the device's status
2088 * struct, or discards them, depending on whether record
2089 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2090 *
2091 **************************************************************/
2092
2093static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2094{
2095 u32 tx_good, tx_under;
2096 u32 rx_good, rx_over;
2097 u32 def_tx, crc, code;
2098 u32 multi_col, single_col;
2099 u32 excess_col, late_col, loss;
2100
2101 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2102 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2103 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2104 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2105 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2106
2107 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2108 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2109 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2110 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2111 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2112
2113 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2114 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2115 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2116 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2117 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2118
2119 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2120 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2121 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2122 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2123 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2124
2125 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2126 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2127 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2128 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2129
2130 if (record) {
2131 dev->stats.rx_packets += rx_good;
2132 dev->stats.rx_errors += rx_over + crc + code;
2133 dev->stats.tx_packets += tx_good;
2134 dev->stats.tx_errors += tx_under + loss;
2135 dev->stats.collisions += multi_col
2136 + single_col + excess_col + late_col;
2137
2138 dev->stats.rx_over_errors += rx_over;
2139 dev->stats.rx_crc_errors += crc;
2140 dev->stats.rx_frame_errors += code;
2141
2142 dev->stats.tx_aborted_errors += tx_under;
2143 dev->stats.tx_carrier_errors += loss;
2144 }
2145
2146}
2147
2148
2149
2150
2151/***************************************************************
2152 * TLan_Reset
2153 *
2154 * Returns:
2155 * 0
2156 * Parms:
2157 * dev Pointer to device structure of adapter
2158 * to be reset.
2159 *
2160 * This function resets the adapter and it's physical
2161 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2162 * Programmer's Guide" for details. The routine tries to
2163 * implement what is detailed there, though adjustments
2164 * have been made.
2165 *
2166 **************************************************************/
2167
2168static void
2169tlan_reset_adapter(struct net_device *dev)
2170{
2171 struct tlan_priv *priv = netdev_priv(dev);
2172 int i;
2173 u32 addr;
2174 u32 data;
2175 u8 data8;
2176
2177 priv->tlan_full_duplex = false;
2178 priv->phy_online = 0;
2179 netif_carrier_off(dev);
2180
2181/* 1. Assert reset bit. */
2182
2183 data = inl(dev->base_addr + TLAN_HOST_CMD);
2184 data |= TLAN_HC_AD_RST;
2185 outl(data, dev->base_addr + TLAN_HOST_CMD);
2186
2187 udelay(1000);
2188
2189/* 2. Turn off interrupts. (Probably isn't necessary) */
2190
2191 data = inl(dev->base_addr + TLAN_HOST_CMD);
2192 data |= TLAN_HC_INT_OFF;
2193 outl(data, dev->base_addr + TLAN_HOST_CMD);
2194
2195/* 3. Clear AREGs and HASHs. */
2196
2197 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2198 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2199
2200/* 4. Setup NetConfig register. */
2201
2202 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2203 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2204
2205/* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2206
2207 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2208 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2209
2210/* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2211
2212 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2213 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2214 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2215
2216/* 7. Setup the remaining registers. */
2217
2218 if (priv->tlan_rev >= 0x30) {
2219 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2220 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2221 }
2222 tlan_phy_detect(dev);
2223 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2224
2225 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2226 data |= TLAN_NET_CFG_BIT;
2227 if (priv->aui == 1) {
2228 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2229 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2230 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2231 priv->tlan_full_duplex = true;
2232 } else {
2233 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2234 }
2235 }
2236
2237 /* don't power down internal PHY if we're going to use it */
2238 if (priv->phy_num == 0 ||
2239 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2240 data |= TLAN_NET_CFG_PHY_EN;
2241 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2242
2243 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2244 tlan_finish_reset(dev);
2245 else
2246 tlan_phy_power_down(dev);
2247
2248}
2249
2250
2251
2252
2253static void
2254tlan_finish_reset(struct net_device *dev)
2255{
2256 struct tlan_priv *priv = netdev_priv(dev);
2257 u8 data;
2258 u32 phy;
2259 u8 sio;
2260 u16 status;
2261 u16 partner;
2262 u16 tlphy_ctl;
2263 u16 tlphy_par;
2264 u16 tlphy_id1, tlphy_id2;
2265 int i;
2266
2267 phy = priv->phy[priv->phy_num];
2268
2269 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2270 if (priv->tlan_full_duplex)
2271 data |= TLAN_NET_CMD_DUPLEX;
2272 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2273 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2274 if (priv->phy_num == 0)
2275 data |= TLAN_NET_MASK_MASK7;
2276 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2277 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2278 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2279 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2280
2281 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2282 (priv->aui)) {
2283 status = MII_GS_LINK;
2284 netdev_info(dev, "Link forced\n");
2285 } else {
2286 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2287 udelay(1000);
2288 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2289 if (status & MII_GS_LINK) {
2290 /* We only support link info on Nat.Sem. PHY's */
2291 if ((tlphy_id1 == NAT_SEM_ID1) &&
2292 (tlphy_id2 == NAT_SEM_ID2)) {
2293 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2294 &partner);
2295 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2296 &tlphy_par);
2297
2298 netdev_info(dev,
2299 "Link active, %s %uMbps %s-Duplex\n",
2300 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2301 ? "forced" : "Autonegotiation enabled,",
2302 tlphy_par & TLAN_PHY_SPEED_100
2303 ? 100 : 10,
2304 tlphy_par & TLAN_PHY_DUPLEX_FULL
2305 ? "Full" : "Half");
2306
2307 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2308 netdev_info(dev, "Partner capability:");
2309 for (i = 5; i < 10; i++)
2310 if (partner & (1 << i))
2311 pr_cont(" %s",
2312 media[i-5]);
2313 pr_cont("\n");
2314 }
2315 } else
2316 netdev_info(dev, "Link active\n");
2317 /* Enabling link beat monitoring */
2318 priv->media_timer.expires = jiffies + HZ;
2319 add_timer(&priv->media_timer);
2320 }
2321 }
2322
2323 if (priv->phy_num == 0) {
2324 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2325 tlphy_ctl |= TLAN_TC_INTEN;
2326 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2327 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2328 sio |= TLAN_NET_SIO_MINTEN;
2329 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2330 }
2331
2332 if (status & MII_GS_LINK) {
2333 tlan_set_mac(dev, 0, dev->dev_addr);
2334 priv->phy_online = 1;
2335 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2336 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2337 outb((TLAN_HC_REQ_INT >> 8),
2338 dev->base_addr + TLAN_HOST_CMD + 1);
2339 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2340 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2341 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2342 netif_carrier_on(dev);
2343 } else {
2344 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2345 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2346 return;
2347 }
2348 tlan_set_multicast_list(dev);
2349
2350}
2351
2352
2353
2354
2355/***************************************************************
2356 * tlan_set_mac
2357 *
2358 * Returns:
2359 * Nothing
2360 * Parms:
2361 * dev Pointer to device structure of adapter
2362 * on which to change the AREG.
2363 * areg The AREG to set the address in (0 - 3).
2364 * mac A pointer to an array of chars. Each
2365 * element stores one byte of the address.
2366 * IE, it isn't in ascii.
2367 *
2368 * This function transfers a MAC address to one of the
2369 * TLAN AREGs (address registers). The TLAN chip locks
2370 * the register on writing to offset 0 and unlocks the
2371 * register after writing to offset 5. If NULL is passed
2372 * in mac, then the AREG is filled with 0's.
2373 *
2374 **************************************************************/
2375
2376static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2377{
2378 int i;
2379
2380 areg *= 6;
2381
2382 if (mac != NULL) {
2383 for (i = 0; i < 6; i++)
2384 tlan_dio_write8(dev->base_addr,
2385 TLAN_AREG_0 + areg + i, mac[i]);
2386 } else {
2387 for (i = 0; i < 6; i++)
2388 tlan_dio_write8(dev->base_addr,
2389 TLAN_AREG_0 + areg + i, 0);
2390 }
2391
2392}
2393
2394
2395
2396
2397/*****************************************************************************
2398******************************************************************************
2399
2400ThunderLAN driver PHY layer routines
2401
2402******************************************************************************
2403*****************************************************************************/
2404
2405
2406
2407/*********************************************************************
2408 * tlan_phy_print
2409 *
2410 * Returns:
2411 * Nothing
2412 * Parms:
2413 * dev A pointer to the device structure of the
2414 * TLAN device having the PHYs to be detailed.
2415 *
2416 * This function prints the registers a PHY (aka transceiver).
2417 *
2418 ********************************************************************/
2419
2420static void tlan_phy_print(struct net_device *dev)
2421{
2422 struct tlan_priv *priv = netdev_priv(dev);
2423 u16 i, data0, data1, data2, data3, phy;
2424
2425 phy = priv->phy[priv->phy_num];
2426
2427 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2428 netdev_info(dev, "Unmanaged PHY\n");
2429 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2430 netdev_info(dev, "PHY 0x%02x\n", phy);
2431 pr_info(" Off. +0 +1 +2 +3\n");
2432 for (i = 0; i < 0x20; i += 4) {
2433 tlan_mii_read_reg(dev, phy, i, &data0);
2434 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2435 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2436 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2437 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2438 i, data0, data1, data2, data3);
2439 }
2440 } else {
2441 netdev_info(dev, "Invalid PHY\n");
2442 }
2443
2444}
2445
2446
2447
2448
2449/*********************************************************************
2450 * tlan_phy_detect
2451 *
2452 * Returns:
2453 * Nothing
2454 * Parms:
2455 * dev A pointer to the device structure of the adapter
2456 * for which the PHY needs determined.
2457 *
2458 * So far I've found that adapters which have external PHYs
2459 * may also use the internal PHY for part of the functionality.
2460 * (eg, AUI/Thinnet). This function finds out if this TLAN
2461 * chip has an internal PHY, and then finds the first external
2462 * PHY (starting from address 0) if it exists).
2463 *
2464 ********************************************************************/
2465
2466static void tlan_phy_detect(struct net_device *dev)
2467{
2468 struct tlan_priv *priv = netdev_priv(dev);
2469 u16 control;
2470 u16 hi;
2471 u16 lo;
2472 u32 phy;
2473
2474 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2475 priv->phy_num = 0xffff;
2476 return;
2477 }
2478
2479 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2480
2481 if (hi != 0xffff)
2482 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2483 else
2484 priv->phy[0] = TLAN_PHY_NONE;
2485
2486 priv->phy[1] = TLAN_PHY_NONE;
2487 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2488 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2489 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2490 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2491 if ((control != 0xffff) ||
2492 (hi != 0xffff) || (lo != 0xffff)) {
2493 TLAN_DBG(TLAN_DEBUG_GNRL,
2494 "PHY found at %02x %04x %04x %04x\n",
2495 phy, control, hi, lo);
2496 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2497 (phy != TLAN_PHY_MAX_ADDR)) {
2498 priv->phy[1] = phy;
2499 }
2500 }
2501 }
2502
2503 if (priv->phy[1] != TLAN_PHY_NONE)
2504 priv->phy_num = 1;
2505 else if (priv->phy[0] != TLAN_PHY_NONE)
2506 priv->phy_num = 0;
2507 else
2508 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2509
2510}
2511
2512
2513
2514
2515static void tlan_phy_power_down(struct net_device *dev)
2516{
2517 struct tlan_priv *priv = netdev_priv(dev);
2518 u16 value;
2519
2520 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2521 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2522 tlan_mii_sync(dev->base_addr);
2523 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2524 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2525 /* if using internal PHY, the external PHY must be powered on */
2526 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2527 value = MII_GC_ISOLATE; /* just isolate it from MII */
2528 tlan_mii_sync(dev->base_addr);
2529 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2530 }
2531
2532 /* Wait for 50 ms and powerup
2533 * This is abitrary. It is intended to make sure the
2534 * transceiver settles.
2535 */
2536 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2537
2538}
2539
2540
2541
2542
2543static void tlan_phy_power_up(struct net_device *dev)
2544{
2545 struct tlan_priv *priv = netdev_priv(dev);
2546 u16 value;
2547
2548 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2549 tlan_mii_sync(dev->base_addr);
2550 value = MII_GC_LOOPBK;
2551 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2552 tlan_mii_sync(dev->base_addr);
2553 /* Wait for 500 ms and reset the
2554 * transceiver. The TLAN docs say both 50 ms and
2555 * 500 ms, so do the longer, just in case.
2556 */
2557 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2558
2559}
2560
2561
2562
2563
2564static void tlan_phy_reset(struct net_device *dev)
2565{
2566 struct tlan_priv *priv = netdev_priv(dev);
2567 u16 phy;
2568 u16 value;
2569 unsigned long timeout = jiffies + HZ;
2570
2571 phy = priv->phy[priv->phy_num];
2572
2573 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2574 tlan_mii_sync(dev->base_addr);
2575 value = MII_GC_LOOPBK | MII_GC_RESET;
2576 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2577 do {
2578 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2579 if (time_after(jiffies, timeout)) {
2580 netdev_err(dev, "PHY reset timeout\n");
2581 return;
2582 }
2583 } while (value & MII_GC_RESET);
2584
2585 /* Wait for 500 ms and initialize.
2586 * I don't remember why I wait this long.
2587 * I've changed this to 50ms, as it seems long enough.
2588 */
2589 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2590
2591}
2592
2593
2594
2595
2596static void tlan_phy_start_link(struct net_device *dev)
2597{
2598 struct tlan_priv *priv = netdev_priv(dev);
2599 u16 ability;
2600 u16 control;
2601 u16 data;
2602 u16 phy;
2603 u16 status;
2604 u16 tctl;
2605
2606 phy = priv->phy[priv->phy_num];
2607 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2608 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2609 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2610
2611 if ((status & MII_GS_AUTONEG) &&
2612 (!priv->aui)) {
2613 ability = status >> 11;
2614 if (priv->speed == TLAN_SPEED_10 &&
2615 priv->duplex == TLAN_DUPLEX_HALF) {
2616 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2617 } else if (priv->speed == TLAN_SPEED_10 &&
2618 priv->duplex == TLAN_DUPLEX_FULL) {
2619 priv->tlan_full_duplex = true;
2620 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2621 } else if (priv->speed == TLAN_SPEED_100 &&
2622 priv->duplex == TLAN_DUPLEX_HALF) {
2623 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2624 } else if (priv->speed == TLAN_SPEED_100 &&
2625 priv->duplex == TLAN_DUPLEX_FULL) {
2626 priv->tlan_full_duplex = true;
2627 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2628 } else {
2629
2630 /* Set Auto-Neg advertisement */
2631 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2632 (ability << 5) | 1);
2633 /* Enablee Auto-Neg */
2634 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2635 /* Restart Auto-Neg */
2636 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2637 /* Wait for 4 sec for autonegotiation
2638 * to complete. The max spec time is less than this
2639 * but the card need additional time to start AN.
2640 * .5 sec should be plenty extra.
2641 */
2642 netdev_info(dev, "Starting autonegotiation\n");
2643 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2644 return;
2645 }
2646
2647 }
2648
2649 if ((priv->aui) && (priv->phy_num != 0)) {
2650 priv->phy_num = 0;
2651 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2652 | TLAN_NET_CFG_PHY_EN;
2653 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2654 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2655 return;
2656 } else if (priv->phy_num == 0) {
2657 control = 0;
2658 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2659 if (priv->aui) {
2660 tctl |= TLAN_TC_AUISEL;
2661 } else {
2662 tctl &= ~TLAN_TC_AUISEL;
2663 if (priv->duplex == TLAN_DUPLEX_FULL) {
2664 control |= MII_GC_DUPLEX;
2665 priv->tlan_full_duplex = true;
2666 }
2667 if (priv->speed == TLAN_SPEED_100)
2668 control |= MII_GC_SPEEDSEL;
2669 }
2670 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2671 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2672 }
2673
2674 /* Wait for 2 sec to give the transceiver time
2675 * to establish link.
2676 */
2677 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2678
2679}
2680
2681
2682
2683
2684static void tlan_phy_finish_auto_neg(struct net_device *dev)
2685{
2686 struct tlan_priv *priv = netdev_priv(dev);
2687 u16 an_adv;
2688 u16 an_lpa;
2689 u16 mode;
2690 u16 phy;
2691 u16 status;
2692
2693 phy = priv->phy[priv->phy_num];
2694
2695 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2696 udelay(1000);
2697 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2698
2699 if (!(status & MII_GS_AUTOCMPLT)) {
2700 /* Wait for 8 sec to give the process
2701 * more time. Perhaps we should fail after a while.
2702 */
2703 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2704 return;
2705 }
2706
2707 netdev_info(dev, "Autonegotiation complete\n");
2708 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2709 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2710 mode = an_adv & an_lpa & 0x03E0;
2711 if (mode & 0x0100)
2712 priv->tlan_full_duplex = true;
2713 else if (!(mode & 0x0080) && (mode & 0x0040))
2714 priv->tlan_full_duplex = true;
2715
2716 /* switch to internal PHY for 10 Mbps */
2717 if ((!(mode & 0x0180)) &&
2718 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2719 (priv->phy_num != 0)) {
2720 priv->phy_num = 0;
2721 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2722 return;
2723 }
2724
2725 if (priv->phy_num == 0) {
2726 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2727 (an_adv & an_lpa & 0x0040)) {
2728 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2729 MII_GC_AUTOENB | MII_GC_DUPLEX);
2730 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2731 } else {
2732 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2733 MII_GC_AUTOENB);
2734 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2735 }
2736 }
2737
2738 /* Wait for 100 ms. No reason in partiticular.
2739 */
2740 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2741
2742}
2743
2744
2745/*********************************************************************
2746 *
2747 * tlan_phy_monitor
2748 *
2749 * Returns:
2750 * None
2751 *
2752 * Params:
2753 * data The device structure of this device.
2754 *
2755 *
2756 * This function monitors PHY condition by reading the status
2757 * register via the MII bus, controls LINK LED and notifies the
2758 * kernel about link state.
2759 *
2760 *******************************************************************/
2761
2762static void tlan_phy_monitor(struct timer_list *t)
2763{
2764 struct tlan_priv *priv = from_timer(priv, t, media_timer);
2765 struct net_device *dev = priv->dev;
2766 u16 phy;
2767 u16 phy_status;
2768
2769 phy = priv->phy[priv->phy_num];
2770
2771 /* Get PHY status register */
2772 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2773
2774 /* Check if link has been lost */
2775 if (!(phy_status & MII_GS_LINK)) {
2776 if (netif_carrier_ok(dev)) {
2777 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2778 dev->name);
2779 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2780 netif_carrier_off(dev);
2781 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2782 /* power down internal PHY */
2783 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2784 MII_GC_ISOLATE;
2785
2786 tlan_mii_sync(dev->base_addr);
2787 tlan_mii_write_reg(dev, priv->phy[0],
2788 MII_GEN_CTL, data);
2789 /* set to external PHY */
2790 priv->phy_num = 1;
2791 /* restart autonegotiation */
2792 tlan_set_timer(dev, msecs_to_jiffies(400),
2793 TLAN_TIMER_PHY_PDOWN);
2794 return;
2795 }
2796 }
2797 }
2798
2799 /* Link restablished? */
2800 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2801 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2802 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2803 dev->name);
2804 netif_carrier_on(dev);
2805 }
2806 priv->media_timer.expires = jiffies + HZ;
2807 add_timer(&priv->media_timer);
2808}
2809
2810
2811/*****************************************************************************
2812******************************************************************************
2813
2814ThunderLAN driver MII routines
2815
2816these routines are based on the information in chap. 2 of the
2817"ThunderLAN Programmer's Guide", pp. 15-24.
2818
2819******************************************************************************
2820*****************************************************************************/
2821
2822
2823/***************************************************************
2824 * tlan_mii_read_reg
2825 *
2826 * Returns:
2827 * false if ack received ok
2828 * true if no ack received or other error
2829 *
2830 * Parms:
2831 * dev The device structure containing
2832 * The io address and interrupt count
2833 * for this device.
2834 * phy The address of the PHY to be queried.
2835 * reg The register whose contents are to be
2836 * retrieved.
2837 * val A pointer to a variable to store the
2838 * retrieved value.
2839 *
2840 * This function uses the TLAN's MII bus to retrieve the contents
2841 * of a given register on a PHY. It sends the appropriate info
2842 * and then reads the 16-bit register value from the MII bus via
2843 * the TLAN SIO register.
2844 *
2845 **************************************************************/
2846
2847static bool
2848tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2849{
2850 u8 nack;
2851 u16 sio, tmp;
2852 u32 i;
2853 bool err;
2854 int minten;
2855 struct tlan_priv *priv = netdev_priv(dev);
2856 unsigned long flags = 0;
2857
2858 err = false;
2859 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2860 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2861
2862 if (!in_irq())
2863 spin_lock_irqsave(&priv->lock, flags);
2864
2865 tlan_mii_sync(dev->base_addr);
2866
2867 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2868 if (minten)
2869 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2870
2871 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2872 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2873 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2874 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2875
2876
2877 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2878
2879 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2880 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2881 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2882
2883 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2884 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2885 if (nack) { /* no ACK, so fake it */
2886 for (i = 0; i < 16; i++) {
2887 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2888 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2889 }
2890 tmp = 0xffff;
2891 err = true;
2892 } else { /* ACK, so read data */
2893 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2894 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2895 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2896 tmp |= i;
2897 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2898 }
2899 }
2900
2901
2902 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2903 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2904
2905 if (minten)
2906 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2907
2908 *val = tmp;
2909
2910 if (!in_irq())
2911 spin_unlock_irqrestore(&priv->lock, flags);
2912
2913 return err;
2914
2915}
2916
2917
2918
2919
2920/***************************************************************
2921 * tlan_mii_send_data
2922 *
2923 * Returns:
2924 * Nothing
2925 * Parms:
2926 * base_port The base IO port of the adapter in
2927 * question.
2928 * dev The address of the PHY to be queried.
2929 * data The value to be placed on the MII bus.
2930 * num_bits The number of bits in data that are to
2931 * be placed on the MII bus.
2932 *
2933 * This function sends on sequence of bits on the MII
2934 * configuration bus.
2935 *
2936 **************************************************************/
2937
2938static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2939{
2940 u16 sio;
2941 u32 i;
2942
2943 if (num_bits == 0)
2944 return;
2945
2946 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2947 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2948 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2949
2950 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2951 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2952 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2953 if (data & i)
2954 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2955 else
2956 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2957 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2958 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2959 }
2960
2961}
2962
2963
2964
2965
2966/***************************************************************
2967 * TLan_MiiSync
2968 *
2969 * Returns:
2970 * Nothing
2971 * Parms:
2972 * base_port The base IO port of the adapter in
2973 * question.
2974 *
2975 * This functions syncs all PHYs in terms of the MII configuration
2976 * bus.
2977 *
2978 **************************************************************/
2979
2980static void tlan_mii_sync(u16 base_port)
2981{
2982 int i;
2983 u16 sio;
2984
2985 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2986 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2987
2988 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2989 for (i = 0; i < 32; i++) {
2990 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2991 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2992 }
2993
2994}
2995
2996
2997
2998
2999/***************************************************************
3000 * tlan_mii_write_reg
3001 *
3002 * Returns:
3003 * Nothing
3004 * Parms:
3005 * dev The device structure for the device
3006 * to write to.
3007 * phy The address of the PHY to be written to.
3008 * reg The register whose contents are to be
3009 * written.
3010 * val The value to be written to the register.
3011 *
3012 * This function uses the TLAN's MII bus to write the contents of a
3013 * given register on a PHY. It sends the appropriate info and then
3014 * writes the 16-bit register value from the MII configuration bus
3015 * via the TLAN SIO register.
3016 *
3017 **************************************************************/
3018
3019static void
3020tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3021{
3022 u16 sio;
3023 int minten;
3024 unsigned long flags = 0;
3025 struct tlan_priv *priv = netdev_priv(dev);
3026
3027 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3028 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3029
3030 if (!in_irq())
3031 spin_lock_irqsave(&priv->lock, flags);
3032
3033 tlan_mii_sync(dev->base_addr);
3034
3035 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3036 if (minten)
3037 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3038
3039 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3040 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3041 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3042 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3043
3044 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3045 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3046
3047 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3048 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3049
3050 if (minten)
3051 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3052
3053 if (!in_irq())
3054 spin_unlock_irqrestore(&priv->lock, flags);
3055
3056}
3057
3058
3059
3060
3061/*****************************************************************************
3062******************************************************************************
3063
3064ThunderLAN driver eeprom routines
3065
3066the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3067EEPROM. these functions are based on information in microchip's
3068data sheet. I don't know how well this functions will work with
3069other Eeproms.
3070
3071******************************************************************************
3072*****************************************************************************/
3073
3074
3075/***************************************************************
3076 * tlan_ee_send_start
3077 *
3078 * Returns:
3079 * Nothing
3080 * Parms:
3081 * io_base The IO port base address for the
3082 * TLAN device with the EEPROM to
3083 * use.
3084 *
3085 * This function sends a start cycle to an EEPROM attached
3086 * to a TLAN chip.
3087 *
3088 **************************************************************/
3089
3090static void tlan_ee_send_start(u16 io_base)
3091{
3092 u16 sio;
3093
3094 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3095 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3096
3097 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3098 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3099 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3100 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3101 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3102
3103}
3104
3105
3106
3107
3108/***************************************************************
3109 * tlan_ee_send_byte
3110 *
3111 * Returns:
3112 * If the correct ack was received, 0, otherwise 1
3113 * Parms: io_base The IO port base address for the
3114 * TLAN device with the EEPROM to
3115 * use.
3116 * data The 8 bits of information to
3117 * send to the EEPROM.
3118 * stop If TLAN_EEPROM_STOP is passed, a
3119 * stop cycle is sent after the
3120 * byte is sent after the ack is
3121 * read.
3122 *
3123 * This function sends a byte on the serial EEPROM line,
3124 * driving the clock to send each bit. The function then
3125 * reverses transmission direction and reads an acknowledge
3126 * bit.
3127 *
3128 **************************************************************/
3129
3130static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3131{
3132 int err;
3133 u8 place;
3134 u16 sio;
3135
3136 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3137 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3138
3139 /* Assume clock is low, tx is enabled; */
3140 for (place = 0x80; place != 0; place >>= 1) {
3141 if (place & data)
3142 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3143 else
3144 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3145 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3146 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3147 }
3148 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3149 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3150 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3151 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3152 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3153
3154 if ((!err) && stop) {
3155 /* STOP, raise data while clock is high */
3156 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3157 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3158 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3159 }
3160
3161 return err;
3162
3163}
3164
3165
3166
3167
3168/***************************************************************
3169 * tlan_ee_receive_byte
3170 *
3171 * Returns:
3172 * Nothing
3173 * Parms:
3174 * io_base The IO port base address for the
3175 * TLAN device with the EEPROM to
3176 * use.
3177 * data An address to a char to hold the
3178 * data sent from the EEPROM.
3179 * stop If TLAN_EEPROM_STOP is passed, a
3180 * stop cycle is sent after the
3181 * byte is received, and no ack is
3182 * sent.
3183 *
3184 * This function receives 8 bits of data from the EEPROM
3185 * over the serial link. It then sends and ack bit, or no
3186 * ack and a stop bit. This function is used to retrieve
3187 * data after the address of a byte in the EEPROM has been
3188 * sent.
3189 *
3190 **************************************************************/
3191
3192static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3193{
3194 u8 place;
3195 u16 sio;
3196
3197 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3198 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3199 *data = 0;
3200
3201 /* Assume clock is low, tx is enabled; */
3202 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3203 for (place = 0x80; place; place >>= 1) {
3204 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3205 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3206 *data |= place;
3207 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3208 }
3209
3210 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3211 if (!stop) {
3212 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3213 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3214 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3215 } else {
3216 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3217 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3218 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3219 /* STOP, raise data while clock is high */
3220 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3221 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3222 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3223 }
3224
3225}
3226
3227
3228
3229
3230/***************************************************************
3231 * tlan_ee_read_byte
3232 *
3233 * Returns:
3234 * No error = 0, else, the stage at which the error
3235 * occurred.
3236 * Parms:
3237 * io_base The IO port base address for the
3238 * TLAN device with the EEPROM to
3239 * use.
3240 * ee_addr The address of the byte in the
3241 * EEPROM whose contents are to be
3242 * retrieved.
3243 * data An address to a char to hold the
3244 * data obtained from the EEPROM.
3245 *
3246 * This function reads a byte of information from an byte
3247 * cell in the EEPROM.
3248 *
3249 **************************************************************/
3250
3251static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3252{
3253 int err;
3254 struct tlan_priv *priv = netdev_priv(dev);
3255 unsigned long flags = 0;
3256 int ret = 0;
3257
3258 spin_lock_irqsave(&priv->lock, flags);
3259
3260 tlan_ee_send_start(dev->base_addr);
3261 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3262 if (err) {
3263 ret = 1;
3264 goto fail;
3265 }
3266 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3267 if (err) {
3268 ret = 2;
3269 goto fail;
3270 }
3271 tlan_ee_send_start(dev->base_addr);
3272 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3273 if (err) {
3274 ret = 3;
3275 goto fail;
3276 }
3277 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3278fail:
3279 spin_unlock_irqrestore(&priv->lock, flags);
3280
3281 return ret;
3282
3283}
3284
3285
3286