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34#include <linux/sched.h>
35#include <linux/slab.h>
36#include <linux/init.h>
37#include <linux/delay.h>
38#include <linux/netdevice.h>
39#include <linux/etherdevice.h>
40#include <linux/ethtool.h>
41#include <linux/mii.h>
42#include <linux/usb.h>
43#include <linux/module.h>
44#include <asm/byteorder.h>
45#include <asm/uaccess.h>
46#include "pegasus.h"
47
48
49
50
51#define DRIVER_VERSION "v0.9.3 (2013/04/25)"
52#define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
53#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
54
55static const char driver_name[] = "pegasus";
56
57#undef PEGASUS_WRITE_EEPROM
58#define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
59 BMSR_100FULL | BMSR_ANEGCAPABLE)
60
61static bool loopback;
62static bool mii_mode;
63static char *devid;
64
65static struct usb_eth_dev usb_dev_id[] = {
66#define PEGASUS_DEV(pn, vid, pid, flags) \
67 {.name = pn, .vendor = vid, .device = pid, .private = flags},
68#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
69 PEGASUS_DEV(pn, vid, pid, flags)
70#include "pegasus.h"
71#undef PEGASUS_DEV
72#undef PEGASUS_DEV_CLASS
73 {NULL, 0, 0, 0},
74 {NULL, 0, 0, 0}
75};
76
77static struct usb_device_id pegasus_ids[] = {
78#define PEGASUS_DEV(pn, vid, pid, flags) \
79 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
80
81
82
83
84
85
86#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
87 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
88 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
89#include "pegasus.h"
90#undef PEGASUS_DEV
91#undef PEGASUS_DEV_CLASS
92 {},
93 {}
94};
95
96MODULE_AUTHOR(DRIVER_AUTHOR);
97MODULE_DESCRIPTION(DRIVER_DESC);
98MODULE_LICENSE("GPL");
99module_param(loopback, bool, 0);
100module_param(mii_mode, bool, 0);
101module_param(devid, charp, 0);
102MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
103MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
104MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
105
106
107static int msg_level = -1;
108module_param(msg_level, int, 0);
109MODULE_PARM_DESC(msg_level, "Override default message level");
110
111MODULE_DEVICE_TABLE(usb, pegasus_ids);
112static const struct net_device_ops pegasus_netdev_ops;
113
114
115
116static void async_ctrl_callback(struct urb *urb)
117{
118 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
119 int status = urb->status;
120
121 if (status < 0)
122 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
123 kfree(req);
124 usb_free_urb(urb);
125}
126
127static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
128{
129 int ret;
130
131 ret = usb_control_msg(pegasus->usb, usb_rcvctrlpipe(pegasus->usb, 0),
132 PEGASUS_REQ_GET_REGS, PEGASUS_REQT_READ, 0,
133 indx, data, size, 1000);
134 if (ret < 0)
135 netif_dbg(pegasus, drv, pegasus->net,
136 "%s returned %d\n", __func__, ret);
137 return ret;
138}
139
140static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
141{
142 int ret;
143
144 ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
145 PEGASUS_REQ_SET_REGS, PEGASUS_REQT_WRITE, 0,
146 indx, data, size, 100);
147 if (ret < 0)
148 netif_dbg(pegasus, drv, pegasus->net,
149 "%s returned %d\n", __func__, ret);
150 return ret;
151}
152
153static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
154{
155 int ret;
156
157 ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
158 PEGASUS_REQ_SET_REG, PEGASUS_REQT_WRITE, data,
159 indx, &data, 1, 1000);
160 if (ret < 0)
161 netif_dbg(pegasus, drv, pegasus->net,
162 "%s returned %d\n", __func__, ret);
163 return ret;
164}
165
166static int update_eth_regs_async(pegasus_t *pegasus)
167{
168 int ret = -ENOMEM;
169 struct urb *async_urb;
170 struct usb_ctrlrequest *req;
171
172 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
173 if (req == NULL)
174 return ret;
175
176 async_urb = usb_alloc_urb(0, GFP_ATOMIC);
177 if (async_urb == NULL) {
178 kfree(req);
179 return ret;
180 }
181 req->bRequestType = PEGASUS_REQT_WRITE;
182 req->bRequest = PEGASUS_REQ_SET_REGS;
183 req->wValue = cpu_to_le16(0);
184 req->wIndex = cpu_to_le16(EthCtrl0);
185 req->wLength = cpu_to_le16(3);
186
187 usb_fill_control_urb(async_urb, pegasus->usb,
188 usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
189 pegasus->eth_regs, 3, async_ctrl_callback, req);
190
191 ret = usb_submit_urb(async_urb, GFP_ATOMIC);
192 if (ret) {
193 if (ret == -ENODEV)
194 netif_device_detach(pegasus->net);
195 netif_err(pegasus, drv, pegasus->net,
196 "%s returned %d\n", __func__, ret);
197 }
198 return ret;
199}
200
201static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
202{
203 int i;
204 __u8 data[4] = { phy, 0, 0, indx };
205 __le16 regdi;
206 int ret = -ETIMEDOUT;
207
208 if (cmd & PHY_WRITE) {
209 __le16 *t = (__le16 *) & data[1];
210 *t = cpu_to_le16(*regd);
211 }
212 set_register(p, PhyCtrl, 0);
213 set_registers(p, PhyAddr, sizeof(data), data);
214 set_register(p, PhyCtrl, (indx | cmd));
215 for (i = 0; i < REG_TIMEOUT; i++) {
216 ret = get_registers(p, PhyCtrl, 1, data);
217 if (ret < 0)
218 goto fail;
219 if (data[0] & PHY_DONE)
220 break;
221 }
222 if (i >= REG_TIMEOUT)
223 goto fail;
224 if (cmd & PHY_READ) {
225 ret = get_registers(p, PhyData, 2, ®di);
226 *regd = le16_to_cpu(regdi);
227 return ret;
228 }
229 return 0;
230fail:
231 netif_dbg(p, drv, p->net, "%s failed\n", __func__);
232 return ret;
233}
234
235
236static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
237{
238 return __mii_op(pegasus, phy, indx, regd, PHY_READ);
239}
240
241
242static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
243{
244 return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
245}
246
247static int mdio_read(struct net_device *dev, int phy_id, int loc)
248{
249 pegasus_t *pegasus = netdev_priv(dev);
250 u16 res;
251
252 read_mii_word(pegasus, phy_id, loc, &res);
253 return (int)res;
254}
255
256static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
257{
258 pegasus_t *pegasus = netdev_priv(dev);
259 u16 data = val;
260
261 write_mii_word(pegasus, phy_id, loc, &data);
262}
263
264static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
265{
266 int i;
267 __u8 tmp;
268 __le16 retdatai;
269 int ret;
270
271 set_register(pegasus, EpromCtrl, 0);
272 set_register(pegasus, EpromOffset, index);
273 set_register(pegasus, EpromCtrl, EPROM_READ);
274
275 for (i = 0; i < REG_TIMEOUT; i++) {
276 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
277 if (tmp & EPROM_DONE)
278 break;
279 if (ret == -ESHUTDOWN)
280 goto fail;
281 }
282 if (i >= REG_TIMEOUT)
283 goto fail;
284
285 ret = get_registers(pegasus, EpromData, 2, &retdatai);
286 *retdata = le16_to_cpu(retdatai);
287 return ret;
288
289fail:
290 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
291 return -ETIMEDOUT;
292}
293
294#ifdef PEGASUS_WRITE_EEPROM
295static inline void enable_eprom_write(pegasus_t *pegasus)
296{
297 __u8 tmp;
298
299 get_registers(pegasus, EthCtrl2, 1, &tmp);
300 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
301}
302
303static inline void disable_eprom_write(pegasus_t *pegasus)
304{
305 __u8 tmp;
306
307 get_registers(pegasus, EthCtrl2, 1, &tmp);
308 set_register(pegasus, EpromCtrl, 0);
309 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
310}
311
312static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
313{
314 int i;
315 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
316 int ret;
317 __le16 le_data = cpu_to_le16(data);
318
319 set_registers(pegasus, EpromOffset, 4, d);
320 enable_eprom_write(pegasus);
321 set_register(pegasus, EpromOffset, index);
322 set_registers(pegasus, EpromData, 2, &le_data);
323 set_register(pegasus, EpromCtrl, EPROM_WRITE);
324
325 for (i = 0; i < REG_TIMEOUT; i++) {
326 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
327 if (ret == -ESHUTDOWN)
328 goto fail;
329 if (tmp & EPROM_DONE)
330 break;
331 }
332 disable_eprom_write(pegasus);
333 if (i >= REG_TIMEOUT)
334 goto fail;
335
336 return ret;
337
338fail:
339 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
340 return -ETIMEDOUT;
341}
342#endif
343
344static inline void get_node_id(pegasus_t *pegasus, __u8 *id)
345{
346 int i;
347 __u16 w16;
348
349 for (i = 0; i < 3; i++) {
350 read_eprom_word(pegasus, i, &w16);
351 ((__le16 *) id)[i] = cpu_to_le16(w16);
352 }
353}
354
355static void set_ethernet_addr(pegasus_t *pegasus)
356{
357 __u8 node_id[6];
358
359 if (pegasus->features & PEGASUS_II) {
360 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
361 } else {
362 get_node_id(pegasus, node_id);
363 set_registers(pegasus, EthID, sizeof(node_id), node_id);
364 }
365 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
366}
367
368static inline int reset_mac(pegasus_t *pegasus)
369{
370 __u8 data = 0x8;
371 int i;
372
373 set_register(pegasus, EthCtrl1, data);
374 for (i = 0; i < REG_TIMEOUT; i++) {
375 get_registers(pegasus, EthCtrl1, 1, &data);
376 if (~data & 0x08) {
377 if (loopback)
378 break;
379 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
380 set_register(pegasus, Gpio1, 0x34);
381 else
382 set_register(pegasus, Gpio1, 0x26);
383 set_register(pegasus, Gpio0, pegasus->features);
384 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
385 break;
386 }
387 }
388 if (i == REG_TIMEOUT)
389 return -ETIMEDOUT;
390
391 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
392 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
393 set_register(pegasus, Gpio0, 0x24);
394 set_register(pegasus, Gpio0, 0x26);
395 }
396 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
397 __u16 auxmode;
398 read_mii_word(pegasus, 3, 0x1b, &auxmode);
399 auxmode |= 4;
400 write_mii_word(pegasus, 3, 0x1b, &auxmode);
401 }
402
403 return 0;
404}
405
406static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
407{
408 __u16 linkpart;
409 __u8 data[4];
410 pegasus_t *pegasus = netdev_priv(dev);
411 int ret;
412
413 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
414 data[0] = 0xc9;
415 data[1] = 0;
416 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
417 data[1] |= 0x20;
418 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
419 data[1] |= 0x10;
420 if (mii_mode)
421 data[1] = 0;
422 data[2] = loopback ? 0x09 : 0x01;
423
424 memcpy(pegasus->eth_regs, data, sizeof(data));
425 ret = set_registers(pegasus, EthCtrl0, 3, data);
426
427 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
428 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
429 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
430 u16 auxmode;
431 read_mii_word(pegasus, 0, 0x1b, &auxmode);
432 auxmode |= 4;
433 write_mii_word(pegasus, 0, 0x1b, &auxmode);
434 }
435
436 return ret;
437}
438
439static void read_bulk_callback(struct urb *urb)
440{
441 pegasus_t *pegasus = urb->context;
442 struct net_device *net;
443 int rx_status, count = urb->actual_length;
444 int status = urb->status;
445 u8 *buf = urb->transfer_buffer;
446 __u16 pkt_len;
447
448 if (!pegasus)
449 return;
450
451 net = pegasus->net;
452 if (!netif_device_present(net) || !netif_running(net))
453 return;
454
455 switch (status) {
456 case 0:
457 break;
458 case -ETIME:
459 netif_dbg(pegasus, rx_err, net, "reset MAC\n");
460 pegasus->flags &= ~PEGASUS_RX_BUSY;
461 break;
462 case -EPIPE:
463
464 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
465 return;
466 case -ENOENT:
467 case -ECONNRESET:
468 case -ESHUTDOWN:
469 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
470 return;
471 default:
472 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
473 goto goon;
474 }
475
476 if (!count || count < 4)
477 goto goon;
478
479 rx_status = buf[count - 2];
480 if (rx_status & 0x1e) {
481 netif_dbg(pegasus, rx_err, net,
482 "RX packet error %x\n", rx_status);
483 pegasus->stats.rx_errors++;
484 if (rx_status & 0x06)
485 pegasus->stats.rx_length_errors++;
486 if (rx_status & 0x08)
487 pegasus->stats.rx_crc_errors++;
488 if (rx_status & 0x10)
489 pegasus->stats.rx_frame_errors++;
490 goto goon;
491 }
492 if (pegasus->chip == 0x8513) {
493 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
494 pkt_len &= 0x0fff;
495 pegasus->rx_skb->data += 2;
496 } else {
497 pkt_len = buf[count - 3] << 8;
498 pkt_len += buf[count - 4];
499 pkt_len &= 0xfff;
500 pkt_len -= 8;
501 }
502
503
504
505
506
507 if (pkt_len > PEGASUS_MTU)
508 goto goon;
509
510
511
512
513
514 skb_put(pegasus->rx_skb, pkt_len);
515 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
516 netif_rx(pegasus->rx_skb);
517 pegasus->stats.rx_packets++;
518 pegasus->stats.rx_bytes += pkt_len;
519
520 if (pegasus->flags & PEGASUS_UNPLUG)
521 return;
522
523 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
524 GFP_ATOMIC);
525
526 if (pegasus->rx_skb == NULL)
527 goto tl_sched;
528goon:
529 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
530 usb_rcvbulkpipe(pegasus->usb, 1),
531 pegasus->rx_skb->data, PEGASUS_MTU + 8,
532 read_bulk_callback, pegasus);
533 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
534 if (rx_status == -ENODEV)
535 netif_device_detach(pegasus->net);
536 else if (rx_status) {
537 pegasus->flags |= PEGASUS_RX_URB_FAIL;
538 goto tl_sched;
539 } else {
540 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
541 }
542
543 return;
544
545tl_sched:
546 tasklet_schedule(&pegasus->rx_tl);
547}
548
549static void rx_fixup(unsigned long data)
550{
551 pegasus_t *pegasus;
552 int status;
553
554 pegasus = (pegasus_t *) data;
555 if (pegasus->flags & PEGASUS_UNPLUG)
556 return;
557
558 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
559 if (pegasus->rx_skb)
560 goto try_again;
561 if (pegasus->rx_skb == NULL)
562 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
563 PEGASUS_MTU,
564 GFP_ATOMIC);
565 if (pegasus->rx_skb == NULL) {
566 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
567 tasklet_schedule(&pegasus->rx_tl);
568 return;
569 }
570 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
571 usb_rcvbulkpipe(pegasus->usb, 1),
572 pegasus->rx_skb->data, PEGASUS_MTU + 8,
573 read_bulk_callback, pegasus);
574try_again:
575 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
576 if (status == -ENODEV)
577 netif_device_detach(pegasus->net);
578 else if (status) {
579 pegasus->flags |= PEGASUS_RX_URB_FAIL;
580 tasklet_schedule(&pegasus->rx_tl);
581 } else {
582 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
583 }
584}
585
586static void write_bulk_callback(struct urb *urb)
587{
588 pegasus_t *pegasus = urb->context;
589 struct net_device *net;
590 int status = urb->status;
591
592 if (!pegasus)
593 return;
594
595 net = pegasus->net;
596
597 if (!netif_device_present(net) || !netif_running(net))
598 return;
599
600 switch (status) {
601 case -EPIPE:
602
603 netif_stop_queue(net);
604 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
605 return;
606 case -ENOENT:
607 case -ECONNRESET:
608 case -ESHUTDOWN:
609 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
610 return;
611 default:
612 netif_info(pegasus, tx_err, net, "TX status %d\n", status);
613
614 case 0:
615 break;
616 }
617
618 net->trans_start = jiffies;
619 netif_wake_queue(net);
620}
621
622static void intr_callback(struct urb *urb)
623{
624 pegasus_t *pegasus = urb->context;
625 struct net_device *net;
626 int res, status = urb->status;
627
628 if (!pegasus)
629 return;
630 net = pegasus->net;
631
632 switch (status) {
633 case 0:
634 break;
635 case -ECONNRESET:
636 case -ENOENT:
637 case -ESHUTDOWN:
638 return;
639 default:
640
641
642
643 netif_dbg(pegasus, timer, net, "intr status %d\n", status);
644 }
645
646 if (urb->actual_length >= 6) {
647 u8 *d = urb->transfer_buffer;
648
649
650 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
651 |LATE_COL|JABBER_TIMEOUT)) {
652 pegasus->stats.tx_errors++;
653 if (d[0] & TX_UNDERRUN)
654 pegasus->stats.tx_fifo_errors++;
655 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
656 pegasus->stats.tx_aborted_errors++;
657 if (d[0] & LATE_COL)
658 pegasus->stats.tx_window_errors++;
659 }
660
661
662
663
664
665
666
667 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
668 }
669
670 res = usb_submit_urb(urb, GFP_ATOMIC);
671 if (res == -ENODEV)
672 netif_device_detach(pegasus->net);
673 if (res)
674 netif_err(pegasus, timer, net,
675 "can't resubmit interrupt urb, %d\n", res);
676}
677
678static void pegasus_tx_timeout(struct net_device *net)
679{
680 pegasus_t *pegasus = netdev_priv(net);
681 netif_warn(pegasus, timer, net, "tx timeout\n");
682 usb_unlink_urb(pegasus->tx_urb);
683 pegasus->stats.tx_errors++;
684}
685
686static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
687 struct net_device *net)
688{
689 pegasus_t *pegasus = netdev_priv(net);
690 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
691 int res;
692 __u16 l16 = skb->len;
693
694 netif_stop_queue(net);
695
696 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
697 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
698 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
699 usb_sndbulkpipe(pegasus->usb, 2),
700 pegasus->tx_buff, count,
701 write_bulk_callback, pegasus);
702 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
703 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
704 switch (res) {
705 case -EPIPE:
706
707 break;
708 case -ENODEV:
709 case -EPERM:
710 netif_device_detach(pegasus->net);
711 break;
712 default:
713 pegasus->stats.tx_errors++;
714 netif_start_queue(net);
715 }
716 } else {
717 pegasus->stats.tx_packets++;
718 pegasus->stats.tx_bytes += skb->len;
719 }
720 dev_kfree_skb(skb);
721
722 return NETDEV_TX_OK;
723}
724
725static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
726{
727 return &((pegasus_t *) netdev_priv(dev))->stats;
728}
729
730static inline void disable_net_traffic(pegasus_t *pegasus)
731{
732 __le16 tmp = cpu_to_le16(0);
733
734 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
735}
736
737static inline void get_interrupt_interval(pegasus_t *pegasus)
738{
739 u16 data;
740 u8 interval;
741
742 read_eprom_word(pegasus, 4, &data);
743 interval = data >> 8;
744 if (pegasus->usb->speed != USB_SPEED_HIGH) {
745 if (interval < 0x80) {
746 netif_info(pegasus, timer, pegasus->net,
747 "intr interval changed from %ums to %ums\n",
748 interval, 0x80);
749 interval = 0x80;
750 data = (data & 0x00FF) | ((u16)interval << 8);
751#ifdef PEGASUS_WRITE_EEPROM
752 write_eprom_word(pegasus, 4, data);
753#endif
754 }
755 }
756 pegasus->intr_interval = interval;
757}
758
759static void set_carrier(struct net_device *net)
760{
761 pegasus_t *pegasus = netdev_priv(net);
762 u16 tmp;
763
764 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
765 return;
766
767 if (tmp & BMSR_LSTATUS)
768 netif_carrier_on(net);
769 else
770 netif_carrier_off(net);
771}
772
773static void free_all_urbs(pegasus_t *pegasus)
774{
775 usb_free_urb(pegasus->intr_urb);
776 usb_free_urb(pegasus->tx_urb);
777 usb_free_urb(pegasus->rx_urb);
778}
779
780static void unlink_all_urbs(pegasus_t *pegasus)
781{
782 usb_kill_urb(pegasus->intr_urb);
783 usb_kill_urb(pegasus->tx_urb);
784 usb_kill_urb(pegasus->rx_urb);
785}
786
787static int alloc_urbs(pegasus_t *pegasus)
788{
789 int res = -ENOMEM;
790
791 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
792 if (!pegasus->rx_urb) {
793 return res;
794 }
795 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
796 if (!pegasus->tx_urb) {
797 usb_free_urb(pegasus->rx_urb);
798 return res;
799 }
800 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
801 if (!pegasus->intr_urb) {
802 usb_free_urb(pegasus->tx_urb);
803 usb_free_urb(pegasus->rx_urb);
804 return res;
805 }
806
807 return 0;
808}
809
810static int pegasus_open(struct net_device *net)
811{
812 pegasus_t *pegasus = netdev_priv(net);
813 int res=-ENOMEM;
814
815 if (pegasus->rx_skb == NULL)
816 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
817 PEGASUS_MTU,
818 GFP_KERNEL);
819 if (!pegasus->rx_skb)
820 goto exit;
821
822 res = set_registers(pegasus, EthID, 6, net->dev_addr);
823
824 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
825 usb_rcvbulkpipe(pegasus->usb, 1),
826 pegasus->rx_skb->data, PEGASUS_MTU + 8,
827 read_bulk_callback, pegasus);
828 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
829 if (res == -ENODEV)
830 netif_device_detach(pegasus->net);
831 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
832 goto exit;
833 }
834
835 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
836 usb_rcvintpipe(pegasus->usb, 3),
837 pegasus->intr_buff, sizeof(pegasus->intr_buff),
838 intr_callback, pegasus, pegasus->intr_interval);
839 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
840 if (res == -ENODEV)
841 netif_device_detach(pegasus->net);
842 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
843 usb_kill_urb(pegasus->rx_urb);
844 goto exit;
845 }
846 res = enable_net_traffic(net, pegasus->usb);
847 if (res < 0) {
848 netif_dbg(pegasus, ifup, net,
849 "can't enable_net_traffic() - %d\n", res);
850 res = -EIO;
851 usb_kill_urb(pegasus->rx_urb);
852 usb_kill_urb(pegasus->intr_urb);
853 goto exit;
854 }
855 set_carrier(net);
856 netif_start_queue(net);
857 netif_dbg(pegasus, ifup, net, "open\n");
858 res = 0;
859exit:
860 return res;
861}
862
863static int pegasus_close(struct net_device *net)
864{
865 pegasus_t *pegasus = netdev_priv(net);
866
867 netif_stop_queue(net);
868 if (!(pegasus->flags & PEGASUS_UNPLUG))
869 disable_net_traffic(pegasus);
870 tasklet_kill(&pegasus->rx_tl);
871 unlink_all_urbs(pegasus);
872
873 return 0;
874}
875
876static void pegasus_get_drvinfo(struct net_device *dev,
877 struct ethtool_drvinfo *info)
878{
879 pegasus_t *pegasus = netdev_priv(dev);
880
881 strlcpy(info->driver, driver_name, sizeof(info->driver));
882 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
883 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
884}
885
886
887#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
888
889static void
890pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
891{
892 pegasus_t *pegasus = netdev_priv(dev);
893
894 wol->supported = WAKE_MAGIC | WAKE_PHY;
895 wol->wolopts = pegasus->wolopts;
896}
897
898static int
899pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
900{
901 pegasus_t *pegasus = netdev_priv(dev);
902 u8 reg78 = 0x04;
903 int ret;
904
905 if (wol->wolopts & ~WOL_SUPPORTED)
906 return -EINVAL;
907
908 if (wol->wolopts & WAKE_MAGIC)
909 reg78 |= 0x80;
910 if (wol->wolopts & WAKE_PHY)
911 reg78 |= 0x40;
912
913 if (wol->wolopts)
914 pegasus->eth_regs[0] |= 0x10;
915 else
916 pegasus->eth_regs[0] &= ~0x10;
917 pegasus->wolopts = wol->wolopts;
918
919 ret = set_register(pegasus, WakeupControl, reg78);
920 if (!ret)
921 ret = device_set_wakeup_enable(&pegasus->usb->dev,
922 wol->wolopts);
923 return ret;
924}
925
926static inline void pegasus_reset_wol(struct net_device *dev)
927{
928 struct ethtool_wolinfo wol;
929
930 memset(&wol, 0, sizeof wol);
931 (void) pegasus_set_wol(dev, &wol);
932}
933
934static int
935pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
936{
937 pegasus_t *pegasus;
938
939 pegasus = netdev_priv(dev);
940 mii_ethtool_gset(&pegasus->mii, ecmd);
941 return 0;
942}
943
944static int
945pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
946{
947 pegasus_t *pegasus = netdev_priv(dev);
948 return mii_ethtool_sset(&pegasus->mii, ecmd);
949}
950
951static int pegasus_nway_reset(struct net_device *dev)
952{
953 pegasus_t *pegasus = netdev_priv(dev);
954 return mii_nway_restart(&pegasus->mii);
955}
956
957static u32 pegasus_get_link(struct net_device *dev)
958{
959 pegasus_t *pegasus = netdev_priv(dev);
960 return mii_link_ok(&pegasus->mii);
961}
962
963static u32 pegasus_get_msglevel(struct net_device *dev)
964{
965 pegasus_t *pegasus = netdev_priv(dev);
966 return pegasus->msg_enable;
967}
968
969static void pegasus_set_msglevel(struct net_device *dev, u32 v)
970{
971 pegasus_t *pegasus = netdev_priv(dev);
972 pegasus->msg_enable = v;
973}
974
975static const struct ethtool_ops ops = {
976 .get_drvinfo = pegasus_get_drvinfo,
977 .get_settings = pegasus_get_settings,
978 .set_settings = pegasus_set_settings,
979 .nway_reset = pegasus_nway_reset,
980 .get_link = pegasus_get_link,
981 .get_msglevel = pegasus_get_msglevel,
982 .set_msglevel = pegasus_set_msglevel,
983 .get_wol = pegasus_get_wol,
984 .set_wol = pegasus_set_wol,
985};
986
987static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
988{
989 __u16 *data = (__u16 *) &rq->ifr_ifru;
990 pegasus_t *pegasus = netdev_priv(net);
991 int res;
992
993 switch (cmd) {
994 case SIOCDEVPRIVATE:
995 data[0] = pegasus->phy;
996 case SIOCDEVPRIVATE + 1:
997 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
998 res = 0;
999 break;
1000 case SIOCDEVPRIVATE + 2:
1001 if (!capable(CAP_NET_ADMIN))
1002 return -EPERM;
1003 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
1004 res = 0;
1005 break;
1006 default:
1007 res = -EOPNOTSUPP;
1008 }
1009 return res;
1010}
1011
1012static void pegasus_set_multicast(struct net_device *net)
1013{
1014 pegasus_t *pegasus = netdev_priv(net);
1015
1016 if (net->flags & IFF_PROMISC) {
1017 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1018 netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1019 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1020 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1021 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1022 netif_dbg(pegasus, link, net, "set allmulti\n");
1023 } else {
1024 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1025 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1026 }
1027 update_eth_regs_async(pegasus);
1028}
1029
1030static __u8 mii_phy_probe(pegasus_t *pegasus)
1031{
1032 int i;
1033 __u16 tmp;
1034
1035 for (i = 0; i < 32; i++) {
1036 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1037 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1038 continue;
1039 else
1040 return i;
1041 }
1042
1043 return 0xff;
1044}
1045
1046static inline void setup_pegasus_II(pegasus_t *pegasus)
1047{
1048 __u8 data = 0xa5;
1049
1050 set_register(pegasus, Reg1d, 0);
1051 set_register(pegasus, Reg7b, 1);
1052 mdelay(100);
1053 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1054 set_register(pegasus, Reg7b, 0);
1055 else
1056 set_register(pegasus, Reg7b, 2);
1057
1058 set_register(pegasus, 0x83, data);
1059 get_registers(pegasus, 0x83, 1, &data);
1060
1061 if (data == 0xa5)
1062 pegasus->chip = 0x8513;
1063 else
1064 pegasus->chip = 0;
1065
1066 set_register(pegasus, 0x80, 0xc0);
1067 set_register(pegasus, 0x83, 0xff);
1068 set_register(pegasus, 0x84, 0x01);
1069
1070 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1071 set_register(pegasus, Reg81, 6);
1072 else
1073 set_register(pegasus, Reg81, 2);
1074}
1075
1076
1077static int pegasus_count;
1078static struct workqueue_struct *pegasus_workqueue;
1079#define CARRIER_CHECK_DELAY (2 * HZ)
1080
1081static void check_carrier(struct work_struct *work)
1082{
1083 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1084 set_carrier(pegasus->net);
1085 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1086 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1087 CARRIER_CHECK_DELAY);
1088 }
1089}
1090
1091static int pegasus_blacklisted(struct usb_device *udev)
1092{
1093 struct usb_device_descriptor *udd = &udev->descriptor;
1094
1095
1096
1097
1098 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1099 (udd->idProduct == cpu_to_le16(0x0121)) &&
1100 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1101 (udd->bDeviceProtocol == 1))
1102 return 1;
1103
1104 return 0;
1105}
1106
1107
1108
1109
1110static void pegasus_dec_workqueue(void)
1111{
1112 pegasus_count--;
1113 if (pegasus_count == 0) {
1114 destroy_workqueue(pegasus_workqueue);
1115 pegasus_workqueue = NULL;
1116 }
1117}
1118
1119static int pegasus_probe(struct usb_interface *intf,
1120 const struct usb_device_id *id)
1121{
1122 struct usb_device *dev = interface_to_usbdev(intf);
1123 struct net_device *net;
1124 pegasus_t *pegasus;
1125 int dev_index = id - pegasus_ids;
1126 int res = -ENOMEM;
1127
1128 if (pegasus_blacklisted(dev))
1129 return -ENODEV;
1130
1131 if (pegasus_count == 0) {
1132 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1133 if (!pegasus_workqueue)
1134 return -ENOMEM;
1135 }
1136 pegasus_count++;
1137
1138 net = alloc_etherdev(sizeof(struct pegasus));
1139 if (!net)
1140 goto out;
1141
1142 pegasus = netdev_priv(net);
1143 pegasus->dev_index = dev_index;
1144
1145 res = alloc_urbs(pegasus);
1146 if (res < 0) {
1147 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1148 goto out1;
1149 }
1150
1151 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1152
1153 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1154
1155 pegasus->intf = intf;
1156 pegasus->usb = dev;
1157 pegasus->net = net;
1158
1159
1160 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1161 net->netdev_ops = &pegasus_netdev_ops;
1162 net->ethtool_ops = &ops;
1163 pegasus->mii.dev = net;
1164 pegasus->mii.mdio_read = mdio_read;
1165 pegasus->mii.mdio_write = mdio_write;
1166 pegasus->mii.phy_id_mask = 0x1f;
1167 pegasus->mii.reg_num_mask = 0x1f;
1168 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1169 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1170
1171 pegasus->features = usb_dev_id[dev_index].private;
1172 get_interrupt_interval(pegasus);
1173 if (reset_mac(pegasus)) {
1174 dev_err(&intf->dev, "can't reset MAC\n");
1175 res = -EIO;
1176 goto out2;
1177 }
1178 set_ethernet_addr(pegasus);
1179 if (pegasus->features & PEGASUS_II) {
1180 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1181 setup_pegasus_II(pegasus);
1182 }
1183 pegasus->phy = mii_phy_probe(pegasus);
1184 if (pegasus->phy == 0xff) {
1185 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1186 pegasus->phy = 1;
1187 }
1188 pegasus->mii.phy_id = pegasus->phy;
1189 usb_set_intfdata(intf, pegasus);
1190 SET_NETDEV_DEV(net, &intf->dev);
1191 pegasus_reset_wol(net);
1192 res = register_netdev(net);
1193 if (res)
1194 goto out3;
1195 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1196 CARRIER_CHECK_DELAY);
1197 dev_info(&intf->dev, "%s, %s, %pM\n", net->name,
1198 usb_dev_id[dev_index].name, net->dev_addr);
1199 return 0;
1200
1201out3:
1202 usb_set_intfdata(intf, NULL);
1203out2:
1204 free_all_urbs(pegasus);
1205out1:
1206 free_netdev(net);
1207out:
1208 pegasus_dec_workqueue();
1209 return res;
1210}
1211
1212static void pegasus_disconnect(struct usb_interface *intf)
1213{
1214 struct pegasus *pegasus = usb_get_intfdata(intf);
1215
1216 usb_set_intfdata(intf, NULL);
1217 if (!pegasus) {
1218 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1219 return;
1220 }
1221
1222 pegasus->flags |= PEGASUS_UNPLUG;
1223 cancel_delayed_work(&pegasus->carrier_check);
1224 unregister_netdev(pegasus->net);
1225 unlink_all_urbs(pegasus);
1226 free_all_urbs(pegasus);
1227 if (pegasus->rx_skb != NULL) {
1228 dev_kfree_skb(pegasus->rx_skb);
1229 pegasus->rx_skb = NULL;
1230 }
1231 free_netdev(pegasus->net);
1232 pegasus_dec_workqueue();
1233}
1234
1235static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1236{
1237 struct pegasus *pegasus = usb_get_intfdata(intf);
1238
1239 netif_device_detach(pegasus->net);
1240 cancel_delayed_work(&pegasus->carrier_check);
1241 if (netif_running(pegasus->net)) {
1242 usb_kill_urb(pegasus->rx_urb);
1243 usb_kill_urb(pegasus->intr_urb);
1244 }
1245 return 0;
1246}
1247
1248static int pegasus_resume(struct usb_interface *intf)
1249{
1250 struct pegasus *pegasus = usb_get_intfdata(intf);
1251
1252 netif_device_attach(pegasus->net);
1253 if (netif_running(pegasus->net)) {
1254 pegasus->rx_urb->status = 0;
1255 pegasus->rx_urb->actual_length = 0;
1256 read_bulk_callback(pegasus->rx_urb);
1257
1258 pegasus->intr_urb->status = 0;
1259 pegasus->intr_urb->actual_length = 0;
1260 intr_callback(pegasus->intr_urb);
1261 }
1262 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1263 CARRIER_CHECK_DELAY);
1264 return 0;
1265}
1266
1267static const struct net_device_ops pegasus_netdev_ops = {
1268 .ndo_open = pegasus_open,
1269 .ndo_stop = pegasus_close,
1270 .ndo_do_ioctl = pegasus_ioctl,
1271 .ndo_start_xmit = pegasus_start_xmit,
1272 .ndo_set_rx_mode = pegasus_set_multicast,
1273 .ndo_get_stats = pegasus_netdev_stats,
1274 .ndo_tx_timeout = pegasus_tx_timeout,
1275 .ndo_change_mtu = eth_change_mtu,
1276 .ndo_set_mac_address = eth_mac_addr,
1277 .ndo_validate_addr = eth_validate_addr,
1278};
1279
1280static struct usb_driver pegasus_driver = {
1281 .name = driver_name,
1282 .probe = pegasus_probe,
1283 .disconnect = pegasus_disconnect,
1284 .id_table = pegasus_ids,
1285 .suspend = pegasus_suspend,
1286 .resume = pegasus_resume,
1287 .disable_hub_initiated_lpm = 1,
1288};
1289
1290static void __init parse_id(char *id)
1291{
1292 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1293 char *token, *name = NULL;
1294
1295 if ((token = strsep(&id, ":")) != NULL)
1296 name = token;
1297
1298 if ((token = strsep(&id, ":")) != NULL)
1299 vendor_id = simple_strtoul(token, NULL, 16);
1300 if ((token = strsep(&id, ":")) != NULL)
1301 device_id = simple_strtoul(token, NULL, 16);
1302 flags = simple_strtoul(id, NULL, 16);
1303 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1304 driver_name, name, vendor_id, device_id, flags);
1305
1306 if (vendor_id > 0x10000 || vendor_id == 0)
1307 return;
1308 if (device_id > 0x10000 || device_id == 0)
1309 return;
1310
1311 for (i = 0; usb_dev_id[i].name; i++);
1312 usb_dev_id[i].name = name;
1313 usb_dev_id[i].vendor = vendor_id;
1314 usb_dev_id[i].device = device_id;
1315 usb_dev_id[i].private = flags;
1316 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1317 pegasus_ids[i].idVendor = vendor_id;
1318 pegasus_ids[i].idProduct = device_id;
1319}
1320
1321static int __init pegasus_init(void)
1322{
1323 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1324 if (devid)
1325 parse_id(devid);
1326 return usb_register(&pegasus_driver);
1327}
1328
1329static void __exit pegasus_exit(void)
1330{
1331 usb_deregister(&pegasus_driver);
1332}
1333
1334module_init(pegasus_init);
1335module_exit(pegasus_exit);
1336
