1 /*
2 * Copyright (c) 1999-2003 Petko Manolov (petkan@users.sourceforge.net)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 *
9 * ChangeLog:
10 * .... Most of the time spend reading sources & docs.
11 * v0.2.x First official release for the Linux kernel.
12 * v0.3.0 Beutified and structured, some bugs fixed.
13 * v0.3.x URBifying bulk requests and bugfixing. First relatively
14 * stable release. Still can touch device's registers only
15 * from top-halves.
16 * v0.4.0 Control messages remained unurbified are now URBs.
17 * Now we can touch the HW at any time.
18 * v0.4.9 Control urbs again use process context to wait. Argh...
19 * Some long standing bugs (enable_net_traffic) fixed.
20 * Also nasty trick about resubmiting control urb from
21 * interrupt context used. Please let me know how it
22 * behaves. Pegasus II support added since this version.
23 * TODO: suppressing HCD warnings spewage on disconnect.
24 * v0.4.13 Ethernet address is now set at probe(), not at open()
25 * time as this seems to break dhcpd.
26 * v0.4.25 ethtool support added.
27 */
28
29 #include <linux/sched.h>
30 #include <linux/slab.h>
31 #include <linux/init.h>
32 #include <linux/delay.h>
33 #include <linux/netdevice.h>
34 #include <linux/etherdevice.h>
35 #include <linux/ethtool.h>
36 #include <linux/mii.h>
37 #include <linux/usb.h>
38 #include <linux/module.h>
39 #include <asm/uaccess.h>
40 #include "pegasus.h"
41
42 /*
43 * Version Information
44 */
45 #define DRIVER_VERSION "v0.4.32 (2003/06/06)"
46 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
47 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
48
49 static const char driver_name[] = "pegasus";
50
51 #define PEGASUS_USE_INTR
52 #define PEGASUS_WRITE_EEPROM
53 #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
54 BMSR_100FULL | BMSR_ANEGCAPABLE)
55
56 static int loopback = 0;
57 static int mii_mode = 0;
58 static int multicast_filter_limit = 32;
59
60 static struct usb_eth_dev usb_dev_id[] = {
61 #define PEGASUS_DEV(pn, vid, pid, flags) \
62 {name:pn, vendor:vid, device:pid, private:flags},
63 #include "pegasus.h"
64 #undef PEGASUS_DEV
65 {NULL, 0, 0, 0}
66 };
67
68 static struct usb_device_id pegasus_ids[] = {
69 #define PEGASUS_DEV(pn, vid, pid, flags) \
70 {match_flags: USB_DEVICE_ID_MATCH_DEVICE, idVendor:vid, idProduct:pid},
71 #include "pegasus.h"
72 #undef PEGASUS_DEV
73 {}
74 };
75
76 MODULE_AUTHOR(DRIVER_AUTHOR);
77 MODULE_DESCRIPTION(DRIVER_DESC);
78 MODULE_LICENSE("GPL");
79 MODULE_PARM(loopback, "i");
80 MODULE_PARM(mii_mode, "i");
81 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
82 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
83
84 MODULE_DEVICE_TABLE(usb, pegasus_ids);
85
86 static int update_eth_regs_async(pegasus_t *);
87 /* Aargh!!! I _really_ hate such tweaks */
ctrl_callback(struct urb * urb)88 static void ctrl_callback(struct urb *urb)
89 {
90 pegasus_t *pegasus = urb->context;
91
92 if (!pegasus)
93 return;
94
95 switch (urb->status) {
96 case 0:
97 if (pegasus->flags & ETH_REGS_CHANGE) {
98 pegasus->flags &= ~ETH_REGS_CHANGE;
99 pegasus->flags |= ETH_REGS_CHANGED;
100 update_eth_regs_async(pegasus);
101 return;
102 }
103 break;
104 case -EINPROGRESS:
105 return;
106 case -ENOENT:
107 break;
108 default:
109 warn("%s: status %d", __FUNCTION__, urb->status);
110 }
111 pegasus->flags &= ~ETH_REGS_CHANGED;
112 wake_up(&pegasus->ctrl_wait);
113 }
114
get_registers(pegasus_t * pegasus,u16 indx,u16 size,void * data)115 static int get_registers(pegasus_t * pegasus, u16 indx, u16 size,
116 void *data)
117 {
118 int ret;
119 char *buffer;
120 DECLARE_WAITQUEUE(wait, current);
121
122 buffer = kmalloc(size, GFP_DMA);
123 if (!buffer) {
124 warn("%s: looks like we're out of memory", __FUNCTION__);
125 return -ENOMEM;
126 }
127 add_wait_queue(&pegasus->ctrl_wait, &wait);
128 set_current_state(TASK_UNINTERRUPTIBLE);
129 while (pegasus->flags & ETH_REGS_CHANGED)
130 schedule();
131 remove_wait_queue(&pegasus->ctrl_wait, &wait);
132 set_current_state(TASK_RUNNING);
133
134 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
135 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
136 pegasus->dr.wValue = cpu_to_le16(0);
137 pegasus->dr.wIndex = cpu_to_le16p(&indx);
138 pegasus->dr.wLength = cpu_to_le16p(&size);
139 pegasus->ctrl_urb->transfer_buffer_length = size;
140
141 FILL_CONTROL_URB(pegasus->ctrl_urb, pegasus->usb,
142 usb_rcvctrlpipe(pegasus->usb, 0),
143 (char *) &pegasus->dr,
144 buffer, size, ctrl_callback, pegasus);
145
146 add_wait_queue(&pegasus->ctrl_wait, &wait);
147 set_current_state(TASK_UNINTERRUPTIBLE);
148
149 if ((ret = usb_submit_urb(pegasus->ctrl_urb))) {
150 set_current_state(TASK_RUNNING);
151 err("%s: BAD CTRLs %d", __FUNCTION__, ret);
152 goto out;
153 }
154
155 schedule();
156 out:
157 remove_wait_queue(&pegasus->ctrl_wait, &wait);
158 memcpy(data, buffer, size);
159 kfree(buffer);
160
161 return ret;
162 }
163
set_registers(pegasus_t * pegasus,u16 indx,u16 size,void * data)164 static int set_registers(pegasus_t * pegasus, u16 indx, u16 size,
165 void *data)
166 {
167 int ret;
168 char *buffer;
169 DECLARE_WAITQUEUE(wait, current);
170
171 buffer = kmalloc(size, GFP_DMA);
172 if (!buffer) {
173 warn("%s: looks like we're out of memory", __FUNCTION__);
174 return -ENOMEM;
175 }
176 memcpy(buffer, data, size);
177
178 add_wait_queue(&pegasus->ctrl_wait, &wait);
179 set_current_state(TASK_UNINTERRUPTIBLE);
180 while (pegasus->flags & ETH_REGS_CHANGED)
181 schedule();
182 remove_wait_queue(&pegasus->ctrl_wait, &wait);
183 set_current_state(TASK_RUNNING);
184
185 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
186 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
187 pegasus->dr.wValue = cpu_to_le16(0);
188 pegasus->dr.wIndex = cpu_to_le16p(&indx);
189 pegasus->dr.wLength = cpu_to_le16p(&size);
190 pegasus->ctrl_urb->transfer_buffer_length = size;
191
192 FILL_CONTROL_URB(pegasus->ctrl_urb, pegasus->usb,
193 usb_sndctrlpipe(pegasus->usb, 0),
194 (char *) &pegasus->dr,
195 buffer, size, ctrl_callback, pegasus);
196
197 add_wait_queue(&pegasus->ctrl_wait, &wait);
198 set_current_state(TASK_UNINTERRUPTIBLE);
199
200 if ((ret = usb_submit_urb(pegasus->ctrl_urb))) {
201 set_current_state(TASK_RUNNING);
202 err("%s: BAD CTRL %d", __FUNCTION__, ret);
203 goto out;
204 }
205
206 schedule();
207 out:
208 remove_wait_queue(&pegasus->ctrl_wait, &wait);
209 kfree(buffer);
210
211 return ret;
212 }
213
set_register(pegasus_t * pegasus,u16 indx,u8 data)214 static int set_register(pegasus_t * pegasus, u16 indx, u8 data)
215 {
216 int ret;
217 char *tmp;
218 DECLARE_WAITQUEUE(wait, current);
219
220 tmp = kmalloc(1, GFP_DMA);
221 if (!tmp) {
222 warn("%s: looks like we're out of memory", __FUNCTION__);
223 return -ENOMEM;
224 }
225 memcpy(tmp, &data, 1);
226 add_wait_queue(&pegasus->ctrl_wait, &wait);
227 set_current_state(TASK_UNINTERRUPTIBLE);
228 while (pegasus->flags & ETH_REGS_CHANGED)
229 schedule();
230 remove_wait_queue(&pegasus->ctrl_wait, &wait);
231 set_current_state(TASK_RUNNING);
232
233 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
234 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
235 pegasus->dr.wValue = cpu_to_le16(data);
236 pegasus->dr.wIndex = cpu_to_le16p(&indx);
237 pegasus->dr.wLength = cpu_to_le16(1);
238 pegasus->ctrl_urb->transfer_buffer_length = 1;
239
240 FILL_CONTROL_URB(pegasus->ctrl_urb, pegasus->usb,
241 usb_sndctrlpipe(pegasus->usb, 0),
242 (char *) &pegasus->dr,
243 tmp, 1, ctrl_callback, pegasus);
244
245 add_wait_queue(&pegasus->ctrl_wait, &wait);
246 set_current_state(TASK_UNINTERRUPTIBLE);
247
248 if ((ret = usb_submit_urb(pegasus->ctrl_urb))) {
249 set_current_state(TASK_RUNNING);
250 err("%s: BAD CTRL %d", __FUNCTION__, ret);
251 goto out;
252 }
253
254 schedule();
255 out:
256 remove_wait_queue(&pegasus->ctrl_wait, &wait);
257 kfree(tmp);
258
259 return ret;
260 }
261
update_eth_regs_async(pegasus_t * pegasus)262 static int update_eth_regs_async(pegasus_t * pegasus)
263 {
264 int ret;
265
266 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
267 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
268 pegasus->dr.wValue = 0;
269 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
270 pegasus->dr.wLength = cpu_to_le16(3);
271 pegasus->ctrl_urb->transfer_buffer_length = 3;
272
273 FILL_CONTROL_URB(pegasus->ctrl_urb, pegasus->usb,
274 usb_sndctrlpipe(pegasus->usb, 0),
275 (char *) &pegasus->dr,
276 pegasus->eth_regs, 3, ctrl_callback, pegasus);
277
278 if ((ret = usb_submit_urb(pegasus->ctrl_urb)))
279 err("%s: BAD CTRL %d, flgs %x", __FUNCTION__, ret,
280 pegasus->flags);
281
282 return ret;
283 }
284
read_mii_word(pegasus_t * pegasus,u8 phy,u8 indx,u16 * regd)285 static int read_mii_word(pegasus_t * pegasus, u8 phy, u8 indx, u16 * regd)
286 {
287 int i;
288 u8 data[4] = { phy, 0, 0, indx };
289 u16 regdi;
290
291 set_register(pegasus, PhyCtrl, 0);
292 set_registers(pegasus, PhyAddr, sizeof(data), data);
293 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
294 for (i = 0; i < REG_TIMEOUT; i++) {
295 get_registers(pegasus, PhyCtrl, 1, data);
296 if (data[0] & PHY_DONE)
297 break;
298 }
299 if (i < REG_TIMEOUT) {
300 get_registers(pegasus, PhyData, 2, ®di);
301 *regd = le16_to_cpu(regdi);
302 return 0;
303 }
304 warn("%s: failed", __FUNCTION__);
305
306 return 1;
307 }
308
mdio_read(struct net_device * dev,int phy_id,int loc)309 static int mdio_read(struct net_device *dev, int phy_id, int loc)
310 {
311 pegasus_t *pegasus = (pegasus_t *) dev->priv;
312 int res;
313
314 read_mii_word(pegasus, phy_id, loc, (u16 *) & res);
315 return res & 0xffff;
316 }
317
write_mii_word(pegasus_t * pegasus,u8 phy,u8 indx,u16 regd)318 static int write_mii_word(pegasus_t * pegasus, u8 phy, u8 indx, u16 regd)
319 {
320 int i;
321 u8 data[4] = { phy, 0, 0, indx };
322
323 *(data + 1) = cpu_to_le16p(®d);
324 set_register(pegasus, PhyCtrl, 0);
325 set_registers(pegasus, PhyAddr, 4, data);
326 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
327 for (i = 0; i < REG_TIMEOUT; i++) {
328 get_registers(pegasus, PhyCtrl, 1, data);
329 if (data[0] & PHY_DONE)
330 break;
331 }
332 if (i < REG_TIMEOUT)
333 return 0;
334 warn("%s: failed", __FUNCTION__);
335
336 return 1;
337 }
338
mdio_write(struct net_device * dev,int phy_id,int loc,int val)339 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
340 {
341 pegasus_t *pegasus = (pegasus_t *) dev->priv;
342
343 write_mii_word(pegasus, phy_id, loc, val);
344 }
345
read_eprom_word(pegasus_t * pegasus,u8 index,u16 * retdata)346 static int read_eprom_word(pegasus_t * pegasus, u8 index, u16 * retdata)
347 {
348 int i;
349 u8 tmp;
350 u16 retdatai;
351
352 set_register(pegasus, EpromCtrl, 0);
353 set_register(pegasus, EpromOffset, index);
354 set_register(pegasus, EpromCtrl, EPROM_READ);
355
356 for (i = 0; i < REG_TIMEOUT; i++) {
357 get_registers(pegasus, EpromCtrl, 1, &tmp);
358 if (tmp & EPROM_DONE)
359 break;
360 }
361 if (i < REG_TIMEOUT) {
362 get_registers(pegasus, EpromData, 2, &retdatai);
363 *retdata = le16_to_cpu(retdatai);
364 return 0;
365 }
366 warn("%s: failed", __FUNCTION__);
367
368 return -1;
369 }
370
371 #ifdef PEGASUS_WRITE_EEPROM
enable_eprom_write(pegasus_t * pegasus)372 static inline void enable_eprom_write(pegasus_t * pegasus)
373 {
374 u8 tmp;
375
376 get_registers(pegasus, EthCtrl2, 1, &tmp);
377 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
378 }
379
disable_eprom_write(pegasus_t * pegasus)380 static inline void disable_eprom_write(pegasus_t * pegasus)
381 {
382 u8 tmp;
383
384 get_registers(pegasus, EthCtrl2, 1, &tmp);
385 set_register(pegasus, EpromCtrl, 0);
386 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
387 }
388
write_eprom_word(pegasus_t * pegasus,u8 index,u16 data)389 static int write_eprom_word(pegasus_t * pegasus, u8 index, u16 data)
390 {
391 int i, tmp;
392 u8 d[4] = { 0x3f, 0, 0, EPROM_WRITE };
393
394 set_registers(pegasus, EpromOffset, 4, d);
395 enable_eprom_write(pegasus);
396 set_register(pegasus, EpromOffset, index);
397 set_registers(pegasus, EpromData, 2, &data);
398 set_register(pegasus, EpromCtrl, EPROM_WRITE);
399
400 for (i = 0; i < REG_TIMEOUT; i++) {
401 get_registers(pegasus, EpromCtrl, 1, &tmp);
402 if (tmp & EPROM_DONE)
403 break;
404 }
405 disable_eprom_write(pegasus);
406 if (i < REG_TIMEOUT)
407 return 0;
408 warn("%s: failed", __FUNCTION__);
409 return -1;
410 }
411 #endif /* PEGASUS_WRITE_EEPROM */
412
get_node_id(pegasus_t * pegasus,u8 * id)413 static inline void get_node_id(pegasus_t * pegasus, u8 * id)
414 {
415 int i;
416 u16 w16;
417
418 for (i = 0; i < 3; i++) {
419 read_eprom_word(pegasus, i, &w16);
420 ((u16 *) id)[i] = cpu_to_le16p(&w16);
421 }
422 }
423
set_ethernet_addr(pegasus_t * pegasus)424 static void set_ethernet_addr(pegasus_t * pegasus)
425 {
426 u8 node_id[6];
427
428 get_node_id(pegasus, node_id);
429 set_registers(pegasus, EthID, sizeof(node_id), node_id);
430 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
431 }
432
reset_mac(pegasus_t * pegasus)433 static inline int reset_mac(pegasus_t * pegasus)
434 {
435 u8 data = 0x8;
436 int i;
437
438 set_register(pegasus, EthCtrl1, data);
439 for (i = 0; i < REG_TIMEOUT; i++) {
440 get_registers(pegasus, EthCtrl1, 1, &data);
441 if (~data & 0x08) {
442 if (loopback & 1)
443 break;
444 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
445 set_register(pegasus, Gpio1, 0x34);
446 else
447 set_register(pegasus, Gpio1, 0x26);
448 set_register(pegasus, Gpio0, pegasus->features);
449 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
450 break;
451 }
452 }
453 if (i == REG_TIMEOUT)
454 return 1;
455
456 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
457 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
458 u16 auxmode;
459
460 read_mii_word(pegasus, 1, 0x1b, &auxmode);
461 write_mii_word(pegasus, 1, 0x1b, auxmode | 4);
462 }
463 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
464 u16 auxmode;
465 read_mii_word(pegasus, 3, 0x1b, &auxmode);
466 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
467 }
468 return 0;
469 }
470
enable_net_traffic(struct net_device * dev,struct usb_device * usb)471 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
472 {
473 u16 linkpart, bmsr;
474 u8 data[4];
475 pegasus_t *pegasus = dev->priv;
476
477 /* read twice 'cos this is a latch bit */
478 read_mii_word(pegasus, pegasus->phy, MII_BMSR, &bmsr);
479 read_mii_word(pegasus, pegasus->phy, MII_BMSR, &bmsr);
480 if (read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart))
481 return 2;
482 if (!(linkpart & 1))
483 warn("link partner stat %x", linkpart);
484
485 data[0] = 0xc9;
486 data[1] = 0;
487 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
488 data[1] |= 0x20; /* set full duplex */
489 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
490 data[1] |= 0x10; /* set 100 Mbps */
491 if (mii_mode)
492 data[1] |= 1;
493 data[2] = (loopback & 1) ? 0x09 : 0x01;
494 memcpy(pegasus->eth_regs, data, sizeof(data));
495 set_registers(pegasus, EthCtrl0, 3, data);
496
497 return 0;
498 }
499
read_bulk_callback(struct urb * urb)500 static void read_bulk_callback(struct urb *urb)
501 {
502 pegasus_t *pegasus = urb->context;
503 struct net_device *net;
504 int count = urb->actual_length, res;
505 int rx_status;
506 struct sk_buff *skb;
507 u16 pkt_len;
508
509 if (!pegasus || !(pegasus->flags & PEGASUS_RUNNING))
510 return;
511
512 net = pegasus->net;
513 if (!netif_device_present(net))
514 return;
515
516 if (pegasus->flags & PEGASUS_RX_BUSY) {
517 pegasus->stats.rx_errors++;
518 dbg("pegasus Rx busy");
519 return;
520 }
521 pegasus->flags |= PEGASUS_RX_BUSY;
522
523 switch (urb->status) {
524 case 0:
525 break;
526 case -ETIMEDOUT:
527 dbg("reset MAC");
528 pegasus->flags &= ~PEGASUS_RX_BUSY;
529 break;
530 default:
531 dbg("%s: RX status %d", net->name, urb->status);
532 goto goon;
533 }
534
535 if (!count)
536 goto goon;
537
538 rx_status = le32_to_cpu(*(int *) (pegasus->rx_buff + count - 4));
539 if (rx_status & 0x000e0000) {
540 dbg("%s: RX packet error %x", net->name, rx_status & 0xe0000);
541 pegasus->stats.rx_errors++;
542 if (rx_status & 0x060000)
543 pegasus->stats.rx_length_errors++;
544 if (rx_status & 0x080000)
545 pegasus->stats.rx_crc_errors++;
546 if (rx_status & 0x100000)
547 pegasus->stats.rx_frame_errors++;
548 goto goon;
549 }
550
551 if (pegasus->chip == 0x8513) {
552 pkt_len = le32_to_cpu(*(int *)pegasus->rx_buff);
553 pkt_len &= 0x0fff;
554 } else {
555 pkt_len = (rx_status & 0x0fff) - 8;
556 }
557
558 if (!(skb = dev_alloc_skb(pkt_len + 2)))
559 goto goon;
560
561 skb->dev = net;
562 skb_reserve(skb, 2);
563 eth_copy_and_sum(skb, pegasus->rx_buff, pkt_len, 0);
564 skb_put(skb, pkt_len);
565
566 if (pegasus->chip == 0x8513) {
567 skb->data += 2;
568 }
569
570 skb->protocol = eth_type_trans(skb, net);
571 netif_rx(skb);
572 pegasus->stats.rx_packets++;
573 pegasus->stats.rx_bytes += pkt_len;
574
575 goon:
576 FILL_BULK_URB(pegasus->rx_urb, pegasus->usb,
577 usb_rcvbulkpipe(pegasus->usb, 1),
578 pegasus->rx_buff, PEGASUS_MAX_MTU,
579 read_bulk_callback, pegasus);
580 if ((res = usb_submit_urb(pegasus->rx_urb)))
581 warn("%s: failed submint rx_urb %d", __FUNCTION__, res);
582 pegasus->flags &= ~PEGASUS_RX_BUSY;
583 }
584
write_bulk_callback(struct urb * urb)585 static void write_bulk_callback(struct urb *urb)
586 {
587 pegasus_t *pegasus = urb->context;
588 struct net_device *net = pegasus->net;
589
590 if (!pegasus || !(pegasus->flags & PEGASUS_RUNNING))
591 return;
592
593 if (!netif_device_present(net))
594 return;
595
596 switch (urb->status) {
597 case -EPIPE:
598 /* FIXME schedule_work() to clear the tx halt */
599 netif_stop_queue(net);
600 warn("%s: no tx stall recovery", net->name);
601 return;
602 case -ENOENT:
603 case -ECONNRESET:
604 case -ESHUTDOWN:
605 dbg("%s: tx unlink, %d", net->name, urb->status);
606 return;
607 default:
608 info("%s: TX status %d", net->name, urb->status);
609 /* FALL THROUGH */
610 case 0:
611 break;
612 }
613
614 net->trans_start = jiffies;
615 netif_wake_queue(net);
616 }
617
618 #ifdef PEGASUS_USE_INTR
intr_callback(struct urb * urb)619 static void intr_callback(struct urb *urb)
620 {
621 pegasus_t *pegasus = urb->context;
622 struct net_device *net;
623 u8 *d;
624
625 if (!pegasus)
626 return;
627
628 switch (urb->status) {
629 case 0:
630 break;
631 case -ENOENT:
632 return;
633 default:
634 info("intr status %d", urb->status);
635 }
636
637 d = urb->transfer_buffer;
638 net = pegasus->net;
639 if (d[0] & 0xfc) {
640 pegasus->stats.tx_errors++;
641 if (d[0] & TX_UNDERRUN)
642 pegasus->stats.tx_fifo_errors++;
643 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
644 pegasus->stats.tx_aborted_errors++;
645 if (d[0] & LATE_COL)
646 pegasus->stats.tx_window_errors++;
647 if (d[5] & LINK_STATUS) {
648 netif_carrier_on(net);
649 } else {
650 netif_carrier_off(net);
651 pegasus->stats.tx_carrier_errors++;
652 }
653 }
654 }
655 #endif
656
pegasus_tx_timeout(struct net_device * net)657 static void pegasus_tx_timeout(struct net_device *net)
658 {
659 pegasus_t *pegasus = net->priv;
660
661 if (!pegasus)
662 return;
663
664 warn("%s: Tx timed out.", net->name);
665 pegasus->tx_urb->transfer_flags |= USB_ASYNC_UNLINK;
666 usb_unlink_urb(pegasus->tx_urb);
667 pegasus->stats.tx_errors++;
668 }
669
pegasus_start_xmit(struct sk_buff * skb,struct net_device * net)670 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
671 {
672 pegasus_t *pegasus = net->priv;
673 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
674 int res;
675 u16 l16 = skb->len;
676
677 netif_stop_queue(net);
678
679 ((u16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
680 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
681 FILL_BULK_URB(pegasus->tx_urb, pegasus->usb,
682 usb_sndbulkpipe(pegasus->usb, 2),
683 pegasus->tx_buff, PEGASUS_MAX_MTU,
684 write_bulk_callback, pegasus);
685 pegasus->tx_urb->transfer_buffer_length = count;
686 if ((res = usb_submit_urb(pegasus->tx_urb))) {
687 switch (res) {
688 case -EPIPE: /* stall, or disconnect from TT */
689 /* cleanup should already have been scheduled */
690 break;
691 case -ENODEV: /* disconnect() upcoming */
692 break;
693 default:
694 pegasus->stats.tx_errors++;
695 netif_start_queue(net);
696 }
697 } else {
698 pegasus->stats.tx_packets++;
699 pegasus->stats.tx_bytes += skb->len;
700 net->trans_start = jiffies;
701 }
702
703 dev_kfree_skb(skb);
704
705 return 0;
706 }
707
pegasus_netdev_stats(struct net_device * dev)708 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
709 {
710 return &((pegasus_t *) dev->priv)->stats;
711 }
712
disable_net_traffic(pegasus_t * pegasus)713 static inline void disable_net_traffic(pegasus_t * pegasus)
714 {
715 int tmp = 0;
716
717 set_registers(pegasus, EthCtrl0, 2, &tmp);
718 }
719
get_interrupt_interval(pegasus_t * pegasus)720 static inline void get_interrupt_interval(pegasus_t * pegasus)
721 {
722 u8 data[2];
723
724 read_eprom_word(pegasus, 4, (u16 *) data);
725 if (data[1] < 0x80) {
726 info("intr interval will be changed from %ums to %ums",
727 data[1], 0x80);
728 data[1] = 0x80;
729 #ifdef PEGASUS_WRITE_EEPROM
730 write_eprom_word(pegasus, 4, *(u16 *) data);
731 #endif
732 }
733 pegasus->intr_interval = data[1];
734 }
735
set_carrier(struct net_device * net)736 static void set_carrier(struct net_device *net)
737 {
738 pegasus_t *pegasus;
739 short tmp;
740
741 pegasus = net->priv;
742 read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp);
743 if (tmp & BMSR_LSTATUS)
744 netif_carrier_on(net);
745 else
746 netif_carrier_off(net);
747
748 }
749
pegasus_open(struct net_device * net)750 static int pegasus_open(struct net_device *net)
751 {
752 pegasus_t *pegasus = (pegasus_t *) net->priv;
753 int res;
754
755 down(&pegasus->sem);
756
757 set_registers(pegasus, EthID, 6, net->dev_addr);
758
759 FILL_BULK_URB(pegasus->rx_urb, pegasus->usb,
760 usb_rcvbulkpipe(pegasus->usb, 1),
761 pegasus->rx_buff, PEGASUS_MAX_MTU,
762 read_bulk_callback, pegasus);
763 if ((res = usb_submit_urb(pegasus->rx_urb)))
764 warn("%s: failed rx_urb %d", __FUNCTION__, res);
765 #ifdef PEGASUS_USE_INTR
766 FILL_INT_URB(pegasus->intr_urb, pegasus->usb,
767 usb_rcvintpipe(pegasus->usb, 3),
768 pegasus->intr_buff, sizeof(pegasus->intr_buff),
769 intr_callback, pegasus, pegasus->intr_interval);
770 if ((res = usb_submit_urb(pegasus->intr_urb)))
771 warn("%s: failed intr_urb %d", __FUNCTION__, res);
772 #endif
773 netif_start_queue(net);
774 pegasus->flags |= PEGASUS_RUNNING;
775 if ((res = enable_net_traffic(net, pegasus->usb))) {
776 err("can't enable_net_traffic() - %d", res);
777 res = -EIO;
778 goto exit;
779 }
780
781 set_carrier(net);
782 res = 0;
783 exit:
784 up(&pegasus->sem);
785
786 return res;
787 }
788
pegasus_close(struct net_device * net)789 static int pegasus_close(struct net_device *net)
790 {
791 pegasus_t *pegasus = net->priv;
792
793 down(&pegasus->sem);
794 pegasus->flags &= ~PEGASUS_RUNNING;
795 netif_stop_queue(net);
796 if (!(pegasus->flags & PEGASUS_UNPLUG))
797 disable_net_traffic(pegasus);
798
799 usb_unlink_urb(pegasus->rx_urb);
800 usb_unlink_urb(pegasus->tx_urb);
801 usb_unlink_urb(pegasus->ctrl_urb);
802 #ifdef PEGASUS_USE_INTR
803 usb_unlink_urb(pegasus->intr_urb);
804 #endif
805 up(&pegasus->sem);
806
807 return 0;
808 }
809 #if CONFIG_MII
pegasus_ethtool_ioctl(struct net_device * dev,void * useraddr)810 static int pegasus_ethtool_ioctl(struct net_device *dev, void *useraddr)
811 {
812
813 u32 ethcmd;
814 pegasus_t *pegasus = dev->priv;
815
816 if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd)))
817 return -EFAULT;
818
819 switch (ethcmd) {
820 /* get driver-specific version/etc. info */
821 case ETHTOOL_GDRVINFO:{
822 struct ethtool_drvinfo info;
823
824 memset (&info, 0, sizeof info);
825 info.cmd = ETHTOOL_GDRVINFO;
826 strncpy(info.driver, driver_name,
827 sizeof (info.driver) - 1);
828 strncpy(info.version, DRIVER_VERSION,
829 sizeof (info.version) - 1);
830 usb_make_path(pegasus->usb, info.bus_info,
831 sizeof info.bus_info);
832 if (copy_to_user(useraddr, &info, sizeof (info)))
833 return -EFAULT;
834 return 0;
835 }
836
837 /* get settings */
838 case ETHTOOL_GSET:{
839 struct ethtool_cmd ecmd = { ETHTOOL_GSET };
840 mii_ethtool_gset(&pegasus->mii, &ecmd);
841 if (copy_to_user(useraddr, &ecmd, sizeof (ecmd)))
842 return -EFAULT;
843 return 0;
844 }
845 /* set settings */
846 case ETHTOOL_SSET:{
847 int r;
848 struct ethtool_cmd ecmd;
849 if (copy_from_user(&ecmd, useraddr, sizeof (ecmd)))
850 return -EFAULT;
851 r = mii_ethtool_sset(&pegasus->mii, &ecmd);
852 return r;
853 }
854 /* restart autonegotiation */
855 case ETHTOOL_NWAY_RST:{
856 return mii_nway_restart(&pegasus->mii);
857 }
858
859 /* get link status */
860 case ETHTOOL_GLINK:{
861 struct ethtool_value edata = { ETHTOOL_GLINK };
862 edata.data = mii_link_ok(&pegasus->mii);
863 if (copy_to_user(useraddr, &edata, sizeof (edata)))
864 return -EFAULT;
865 return 0;
866 }
867 /* get message-level */
868 case ETHTOOL_GMSGLVL:{
869 struct ethtool_value edata = { ETHTOOL_GMSGLVL };
870 /* edata.data = pegasus->msg_enable; FIXME */
871 if (copy_to_user(useraddr, &edata, sizeof (edata)))
872 return -EFAULT;
873 return 0;
874 }
875 /* set message-level */
876 case ETHTOOL_SMSGLVL:{
877 struct ethtool_value edata;
878 if (copy_from_user(&edata, useraddr, sizeof (edata)))
879 return -EFAULT;
880 /* sp->msg_enable = edata.data; FIXME */
881 return 0;
882 }
883
884 }
885
886 return -EOPNOTSUPP;
887
888 }
889 #else
pegasus_ethtool_ioctl(struct net_device * net,void * uaddr)890 static int pegasus_ethtool_ioctl(struct net_device *net, void *uaddr)
891 {
892 pegasus_t *pegasus;
893 int cmd;
894
895 pegasus = net->priv;
896 if (get_user(cmd, (int *) uaddr))
897 return -EFAULT;
898 switch (cmd) {
899 case ETHTOOL_GDRVINFO:{
900 struct ethtool_drvinfo info;
901
902 memset (&info, 0, sizeof info);
903 info.cmd = ETHTOOL_GDRVINFO;
904 strncpy(info.driver, driver_name,
905 sizeof (info.driver) - 1);
906 strncpy(info.driver, DRIVER_DESC, ETHTOOL_BUSINFO_LEN);
907 strncpy(info.version, DRIVER_VERSION,
908 sizeof (info.version) - 1);
909 usb_make_path(pegasus->usb, info.bus_info,
910 sizeof (info.bus_info) -1);
911 if (copy_to_user(uaddr, &info, sizeof(info)))
912 return -EFAULT;
913 return 0;
914 }
915 case ETHTOOL_GSET:{
916 struct ethtool_cmd ecmd;
917 short lpa, bmcr;
918 u8 port;
919
920 if (copy_from_user(&ecmd, uaddr, sizeof(ecmd)))
921 return -EFAULT;
922 ecmd.supported = (SUPPORTED_10baseT_Half |
923 SUPPORTED_10baseT_Full |
924 SUPPORTED_100baseT_Half |
925 SUPPORTED_100baseT_Full |
926 SUPPORTED_Autoneg |
927 SUPPORTED_TP | SUPPORTED_MII);
928 get_registers(pegasus, Reg7b, 1, &port);
929 if (port == 0)
930 ecmd.port = PORT_MII;
931 else
932 ecmd.port = PORT_TP;
933 ecmd.transceiver = XCVR_INTERNAL;
934 ecmd.phy_address = pegasus->phy;
935 read_mii_word(pegasus, pegasus->phy, MII_BMCR, &bmcr);
936 read_mii_word(pegasus, pegasus->phy, MII_LPA, &lpa);
937 if (bmcr & BMCR_ANENABLE) {
938 ecmd.autoneg = AUTONEG_ENABLE;
939 ecmd.speed = lpa & (LPA_100HALF | LPA_100FULL) ?
940 SPEED_100 : SPEED_10;
941 if (ecmd.speed == SPEED_100)
942 ecmd.duplex = lpa & LPA_100FULL ?
943 DUPLEX_FULL : DUPLEX_HALF;
944 else
945 ecmd.duplex = lpa & LPA_10FULL ?
946 DUPLEX_FULL : DUPLEX_HALF;
947 } else {
948 ecmd.autoneg = AUTONEG_DISABLE;
949 ecmd.speed = bmcr & BMCR_SPEED100 ?
950 SPEED_100 : SPEED_10;
951 ecmd.duplex = bmcr & BMCR_FULLDPLX ?
952 DUPLEX_FULL : DUPLEX_HALF;
953 }
954 if (copy_to_user(uaddr, &ecmd, sizeof(ecmd)))
955 return -EFAULT;
956
957 return 0;
958 }
959 case ETHTOOL_SSET:{
960 return -EOPNOTSUPP;
961 }
962 case ETHTOOL_GLINK:{
963 struct ethtool_value edata = { ETHTOOL_GLINK };
964 edata.data = netif_carrier_ok(net);
965 if (copy_to_user(uaddr, &edata, sizeof(edata)))
966 return -EFAULT;
967 return 0;
968 }
969 default:
970 return -EOPNOTSUPP;
971 }
972 }
973 #endif
pegasus_ioctl(struct net_device * net,struct ifreq * rq,int cmd)974 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
975 {
976 u16 *data = (u16 *) & rq->ifr_data;
977 pegasus_t *pegasus = net->priv;
978 int res;
979
980 down(&pegasus->sem);
981 switch (cmd) {
982 case SIOCETHTOOL:
983 res = pegasus_ethtool_ioctl(net, rq->ifr_data);
984 break;
985 case SIOCDEVPRIVATE:
986 data[0] = pegasus->phy;
987 case SIOCDEVPRIVATE + 1:
988 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
989 res = 0;
990 break;
991 case SIOCDEVPRIVATE + 2:
992 if (!capable(CAP_NET_ADMIN)) {
993 up(&pegasus->sem);
994 return -EPERM;
995 }
996 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
997 res = 0;
998 break;
999 default:
1000 res = -EOPNOTSUPP;
1001 }
1002 up(&pegasus->sem);
1003
1004 return res;
1005 }
1006
pegasus_set_multicast(struct net_device * net)1007 static void pegasus_set_multicast(struct net_device *net)
1008 {
1009 pegasus_t *pegasus = net->priv;
1010
1011 netif_stop_queue(net);
1012
1013 if (net->flags & IFF_PROMISC) {
1014 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1015 info("%s: Promiscuous mode enabled", net->name);
1016 } else if ((net->mc_count > multicast_filter_limit) ||
1017 (net->flags & IFF_ALLMULTI)) {
1018 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1019 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1020 info("%s set allmulti", net->name);
1021 } else {
1022 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1023 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1024 }
1025
1026 pegasus->flags |= ETH_REGS_CHANGE;
1027 ctrl_callback(pegasus->ctrl_urb);
1028
1029 netif_wake_queue(net);
1030 }
1031
mii_phy_probe(pegasus_t * pegasus)1032 static u8 mii_phy_probe(pegasus_t * pegasus)
1033 {
1034 int i;
1035 u16 tmp;
1036
1037 for (i = 0; i < 32; i++) {
1038 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1039 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1040 continue;
1041 else
1042 return i;
1043 }
1044
1045 return 0xff;
1046 }
1047
setup_pegasus_II(pegasus_t * pegasus)1048 static inline void setup_pegasus_II(pegasus_t * pegasus)
1049 {
1050 u16 data = 0xa5;
1051
1052 set_register(pegasus, Reg1d, 0);
1053 set_register(pegasus, Reg7b, 1);
1054 mdelay(100);
1055 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1056 set_register(pegasus, Reg7b, 0);
1057 else
1058 set_register(pegasus, Reg7b, 2);
1059
1060 set_register(pegasus, 0x83, data);
1061 get_registers(pegasus, 0x83, 1, &data);
1062
1063 if (data & 0xa5) {
1064 pegasus->chip = 0x8513;
1065 } else {
1066 pegasus->chip = 0;
1067 }
1068
1069 set_register( pegasus, 0x80, 0xc0 );
1070 set_register( pegasus, 0x83, 0xff );
1071 set_register( pegasus, 0x84, 0x01 );
1072
1073 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1074 set_register(pegasus, Reg81, 6);
1075 else
1076 set_register(pegasus, Reg81, 2);
1077 }
1078
pegasus_probe(struct usb_device * dev,unsigned int ifnum,const struct usb_device_id * id)1079 static void *pegasus_probe(struct usb_device *dev, unsigned int ifnum,
1080 const struct usb_device_id *id)
1081 {
1082 struct net_device *net;
1083 pegasus_t *pegasus;
1084 int dev_index = id - pegasus_ids;
1085
1086 if (usb_set_configuration(dev, dev->config[0].bConfigurationValue)) {
1087 err("usb_set_configuration() failed");
1088 return NULL;
1089 }
1090
1091 if (!(pegasus = kmalloc(sizeof(struct pegasus), GFP_KERNEL))) {
1092 err("out of memory allocating device structure");
1093 return NULL;
1094 }
1095
1096 usb_inc_dev_use(dev);
1097 memset(pegasus, 0, sizeof(struct pegasus));
1098 pegasus->dev_index = dev_index;
1099 init_waitqueue_head(&pegasus->ctrl_wait);
1100
1101 pegasus->ctrl_urb = usb_alloc_urb(0);
1102 if (!pegasus->ctrl_urb) {
1103 kfree(pegasus);
1104 return NULL;
1105 }
1106 pegasus->rx_urb = usb_alloc_urb(0);
1107 if (!pegasus->rx_urb) {
1108 usb_free_urb(pegasus->ctrl_urb);
1109 kfree(pegasus);
1110 return NULL;
1111 }
1112 pegasus->tx_urb = usb_alloc_urb(0);
1113 if (!pegasus->tx_urb) {
1114 usb_free_urb(pegasus->rx_urb);
1115 usb_free_urb(pegasus->ctrl_urb);
1116 kfree(pegasus);
1117 return NULL;
1118 }
1119 pegasus->intr_urb = usb_alloc_urb(0);
1120 if (!pegasus->intr_urb) {
1121 usb_free_urb(pegasus->tx_urb);
1122 usb_free_urb(pegasus->rx_urb);
1123 usb_free_urb(pegasus->ctrl_urb);
1124 kfree(pegasus);
1125 return NULL;
1126 }
1127
1128 net = init_etherdev(NULL, 0);
1129 if (!net) {
1130 usb_free_urb(pegasus->tx_urb);
1131 usb_free_urb(pegasus->rx_urb);
1132 usb_free_urb(pegasus->ctrl_urb);
1133 kfree(pegasus);
1134 return NULL;
1135 }
1136
1137 init_MUTEX(&pegasus->sem);
1138 down(&pegasus->sem);
1139 pegasus->usb = dev;
1140 pegasus->net = net;
1141 SET_MODULE_OWNER(net);
1142 net->priv = pegasus;
1143 net->open = pegasus_open;
1144 net->stop = pegasus_close;
1145 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1146 net->tx_timeout = pegasus_tx_timeout;
1147 net->do_ioctl = pegasus_ioctl;
1148 net->hard_start_xmit = pegasus_start_xmit;
1149 net->set_multicast_list = pegasus_set_multicast;
1150 net->get_stats = pegasus_netdev_stats;
1151 net->mtu = PEGASUS_MTU;
1152 pegasus->mii.dev = net;
1153 pegasus->mii.mdio_read = mdio_read;
1154 pegasus->mii.mdio_write = mdio_write;
1155 pegasus->mii.phy_id_mask = 0x1f;
1156 pegasus->mii.reg_num_mask = 0x1f;
1157
1158 pegasus->features = usb_dev_id[dev_index].private;
1159 #ifdef PEGASUS_USE_INTR
1160 get_interrupt_interval(pegasus);
1161 #endif
1162 if (reset_mac(pegasus)) {
1163 err("can't reset MAC");
1164 unregister_netdev(pegasus->net);
1165 usb_free_urb(pegasus->tx_urb);
1166 usb_free_urb(pegasus->rx_urb);
1167 usb_free_urb(pegasus->ctrl_urb);
1168 kfree(pegasus->net);
1169 kfree(pegasus);
1170 pegasus = NULL;
1171 goto exit;
1172 }
1173
1174 info("%s: %s", net->name, usb_dev_id[dev_index].name);
1175
1176 set_ethernet_addr(pegasus);
1177
1178 if (pegasus->features & PEGASUS_II) {
1179 info("setup Pegasus II specific registers");
1180 setup_pegasus_II(pegasus);
1181 }
1182
1183 pegasus->phy = mii_phy_probe(pegasus);
1184 if (pegasus->phy == 0xff) {
1185 warn("can't locate MII phy, using default");
1186 pegasus->phy = 1;
1187 }
1188 exit:
1189 up(&pegasus->sem);
1190
1191 return pegasus;
1192 }
1193
pegasus_disconnect(struct usb_device * dev,void * ptr)1194 static void pegasus_disconnect(struct usb_device *dev, void *ptr)
1195 {
1196 struct pegasus *pegasus = ptr;
1197
1198 if (!pegasus) {
1199 warn("unregistering non-existant device");
1200 return;
1201 }
1202
1203 pegasus->flags |= PEGASUS_UNPLUG;
1204 unregister_netdev(pegasus->net);
1205 usb_dec_dev_use(dev);
1206 usb_unlink_urb(pegasus->intr_urb);
1207 usb_unlink_urb(pegasus->tx_urb);
1208 usb_unlink_urb(pegasus->rx_urb);
1209 usb_unlink_urb(pegasus->ctrl_urb);
1210 usb_free_urb(pegasus->intr_urb);
1211 usb_free_urb(pegasus->tx_urb);
1212 usb_free_urb(pegasus->rx_urb);
1213 usb_free_urb(pegasus->ctrl_urb);
1214 kfree(pegasus->net);
1215 kfree(pegasus);
1216 pegasus = NULL;
1217 }
1218
1219 static struct usb_driver pegasus_driver = {
1220 name: driver_name,
1221 probe: pegasus_probe,
1222 disconnect: pegasus_disconnect,
1223 id_table: pegasus_ids,
1224 };
1225
pegasus_init(void)1226 int __init pegasus_init(void)
1227 {
1228 info(DRIVER_VERSION ":" DRIVER_DESC);
1229 return usb_register(&pegasus_driver);
1230 }
1231
pegasus_exit(void)1232 void __exit pegasus_exit(void)
1233 {
1234 usb_deregister(&pegasus_driver);
1235 }
1236
1237 module_init(pegasus_init);
1238 module_exit(pegasus_exit);
1239