net: convert print_mac to %pM
[linux-2.6.git] / drivers / net / usb / pegasus.c
1 /*
2  *  Copyright (c) 1999-2005 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  *      ChangeLog:
9  *              ....    Most of the time spent on reading sources & docs.
10  *              v0.2.x  First official release for the Linux kernel.
11  *              v0.3.0  Beutified and structured, some bugs fixed.
12  *              v0.3.x  URBifying bulk requests and bugfixing. First relatively
13  *                      stable release. Still can touch device's registers only
14  *                      from top-halves.
15  *              v0.4.0  Control messages remained unurbified are now URBs.
16  *                      Now we can touch the HW at any time.
17  *              v0.4.9  Control urbs again use process context to wait. Argh...
18  *                      Some long standing bugs (enable_net_traffic) fixed.
19  *                      Also nasty trick about resubmiting control urb from
20  *                      interrupt context used. Please let me know how it
21  *                      behaves. Pegasus II support added since this version.
22  *                      TODO: suppressing HCD warnings spewage on disconnect.
23  *              v0.4.13 Ethernet address is now set at probe(), not at open()
24  *                      time as this seems to break dhcpd. 
25  *              v0.5.0  branch to 2.5.x kernels
26  *              v0.5.1  ethtool support added
27  *              v0.5.5  rx socket buffers are in a pool and the their allocation
28  *                      is out of the interrupt routine.
29  */
30
31 #include <linux/sched.h>
32 #include <linux/slab.h>
33 #include <linux/init.h>
34 #include <linux/delay.h>
35 #include <linux/netdevice.h>
36 #include <linux/etherdevice.h>
37 #include <linux/ethtool.h>
38 #include <linux/mii.h>
39 #include <linux/usb.h>
40 #include <linux/module.h>
41 #include <asm/byteorder.h>
42 #include <asm/uaccess.h>
43 #include "pegasus.h"
44
45 /*
46  * Version Information
47  */
48 #define DRIVER_VERSION "v0.6.14 (2006/09/27)"
49 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
50 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
51
52 static const char driver_name[] = "pegasus";
53
54 #undef  PEGASUS_WRITE_EEPROM
55 #define BMSR_MEDIA      (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
56                         BMSR_100FULL | BMSR_ANEGCAPABLE)
57
58 static int loopback = 0;
59 static int mii_mode = 0;
60 static char *devid=NULL;
61
62 static struct usb_eth_dev usb_dev_id[] = {
63 #define PEGASUS_DEV(pn, vid, pid, flags)        \
64         {.name = pn, .vendor = vid, .device = pid, .private = flags},
65 #include "pegasus.h"
66 #undef  PEGASUS_DEV
67         {NULL, 0, 0, 0},
68         {NULL, 0, 0, 0}
69 };
70
71 static struct usb_device_id pegasus_ids[] = {
72 #define PEGASUS_DEV(pn, vid, pid, flags) \
73         {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
74 #include "pegasus.h"
75 #undef  PEGASUS_DEV
76         {},
77         {}
78 };
79
80 MODULE_AUTHOR(DRIVER_AUTHOR);
81 MODULE_DESCRIPTION(DRIVER_DESC);
82 MODULE_LICENSE("GPL");
83 module_param(loopback, bool, 0);
84 module_param(mii_mode, bool, 0);
85 module_param(devid, charp, 0);
86 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
87 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
88 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
89
90 /* use ethtool to change the level for any given device */
91 static int msg_level = -1;
92 module_param (msg_level, int, 0);
93 MODULE_PARM_DESC (msg_level, "Override default message level");
94
95 MODULE_DEVICE_TABLE(usb, pegasus_ids);
96
97 static int update_eth_regs_async(pegasus_t *);
98 /* Aargh!!! I _really_ hate such tweaks */
99 static void ctrl_callback(struct urb *urb)
100 {
101         pegasus_t *pegasus = urb->context;
102
103         if (!pegasus)
104                 return;
105
106         switch (urb->status) {
107         case 0:
108                 if (pegasus->flags & ETH_REGS_CHANGE) {
109                         pegasus->flags &= ~ETH_REGS_CHANGE;
110                         pegasus->flags |= ETH_REGS_CHANGED;
111                         update_eth_regs_async(pegasus);
112                         return;
113                 }
114                 break;
115         case -EINPROGRESS:
116                 return;
117         case -ENOENT:
118                 break;
119         default:
120                 if (netif_msg_drv(pegasus) && printk_ratelimit())
121                         dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
122                                 __func__, urb->status);
123         }
124         pegasus->flags &= ~ETH_REGS_CHANGED;
125         wake_up(&pegasus->ctrl_wait);
126 }
127
128 static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
129                          void *data)
130 {
131         int ret;
132         char *buffer;
133         DECLARE_WAITQUEUE(wait, current);
134
135         buffer = kmalloc(size, GFP_KERNEL);
136         if (!buffer) {
137                 if (netif_msg_drv(pegasus))
138                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
139                                         __func__);
140                 return -ENOMEM;
141         }
142         add_wait_queue(&pegasus->ctrl_wait, &wait);
143         set_current_state(TASK_UNINTERRUPTIBLE);
144         while (pegasus->flags & ETH_REGS_CHANGED)
145                 schedule();
146         remove_wait_queue(&pegasus->ctrl_wait, &wait);
147         set_current_state(TASK_RUNNING);
148
149         pegasus->dr.bRequestType = PEGASUS_REQT_READ;
150         pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
151         pegasus->dr.wValue = cpu_to_le16(0);
152         pegasus->dr.wIndex = cpu_to_le16p(&indx);
153         pegasus->dr.wLength = cpu_to_le16p(&size);
154         pegasus->ctrl_urb->transfer_buffer_length = size;
155
156         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
157                              usb_rcvctrlpipe(pegasus->usb, 0),
158                              (char *) &pegasus->dr,
159                              buffer, size, ctrl_callback, pegasus);
160
161         add_wait_queue(&pegasus->ctrl_wait, &wait);
162         set_current_state(TASK_UNINTERRUPTIBLE);
163
164         /* using ATOMIC, we'd never wake up if we slept */
165         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
166                 set_current_state(TASK_RUNNING);
167                 if (ret == -ENODEV)
168                         netif_device_detach(pegasus->net);
169                 if (netif_msg_drv(pegasus) && printk_ratelimit())
170                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
171                                         __func__, ret);
172                 goto out;
173         }
174
175         schedule();
176 out:
177         remove_wait_queue(&pegasus->ctrl_wait, &wait);
178         memcpy(data, buffer, size);
179         kfree(buffer);
180
181         return ret;
182 }
183
184 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
185                          void *data)
186 {
187         int ret;
188         char *buffer;
189         DECLARE_WAITQUEUE(wait, current);
190
191         buffer = kmalloc(size, GFP_KERNEL);
192         if (!buffer) {
193                 if (netif_msg_drv(pegasus))
194                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
195                                         __func__);
196                 return -ENOMEM;
197         }
198         memcpy(buffer, data, size);
199
200         add_wait_queue(&pegasus->ctrl_wait, &wait);
201         set_current_state(TASK_UNINTERRUPTIBLE);
202         while (pegasus->flags & ETH_REGS_CHANGED)
203                 schedule();
204         remove_wait_queue(&pegasus->ctrl_wait, &wait);
205         set_current_state(TASK_RUNNING);
206
207         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
208         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
209         pegasus->dr.wValue = cpu_to_le16(0);
210         pegasus->dr.wIndex = cpu_to_le16p(&indx);
211         pegasus->dr.wLength = cpu_to_le16p(&size);
212         pegasus->ctrl_urb->transfer_buffer_length = size;
213
214         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
215                              usb_sndctrlpipe(pegasus->usb, 0),
216                              (char *) &pegasus->dr,
217                              buffer, size, ctrl_callback, pegasus);
218
219         add_wait_queue(&pegasus->ctrl_wait, &wait);
220         set_current_state(TASK_UNINTERRUPTIBLE);
221
222         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
223                 if (ret == -ENODEV)
224                         netif_device_detach(pegasus->net);
225                 if (netif_msg_drv(pegasus))
226                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
227                                         __func__, ret);
228                 goto out;
229         }
230
231         schedule();
232 out:
233         remove_wait_queue(&pegasus->ctrl_wait, &wait);
234         kfree(buffer);
235
236         return ret;
237 }
238
239 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
240 {
241         int ret;
242         char *tmp;
243         DECLARE_WAITQUEUE(wait, current);
244
245         tmp = kmalloc(1, GFP_KERNEL);
246         if (!tmp) {
247                 if (netif_msg_drv(pegasus))
248                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
249                                         __func__);
250                 return -ENOMEM;
251         }
252         memcpy(tmp, &data, 1);
253         add_wait_queue(&pegasus->ctrl_wait, &wait);
254         set_current_state(TASK_UNINTERRUPTIBLE);
255         while (pegasus->flags & ETH_REGS_CHANGED)
256                 schedule();
257         remove_wait_queue(&pegasus->ctrl_wait, &wait);
258         set_current_state(TASK_RUNNING);
259
260         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
261         pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
262         pegasus->dr.wValue = cpu_to_le16(data);
263         pegasus->dr.wIndex = cpu_to_le16p(&indx);
264         pegasus->dr.wLength = cpu_to_le16(1);
265         pegasus->ctrl_urb->transfer_buffer_length = 1;
266
267         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
268                              usb_sndctrlpipe(pegasus->usb, 0),
269                              (char *) &pegasus->dr,
270                              tmp, 1, ctrl_callback, pegasus);
271
272         add_wait_queue(&pegasus->ctrl_wait, &wait);
273         set_current_state(TASK_UNINTERRUPTIBLE);
274
275         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
276                 if (ret == -ENODEV)
277                         netif_device_detach(pegasus->net);
278                 if (netif_msg_drv(pegasus) && printk_ratelimit())
279                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
280                                         __func__, ret);
281                 goto out;
282         }
283
284         schedule();
285 out:
286         remove_wait_queue(&pegasus->ctrl_wait, &wait);
287         kfree(tmp);
288
289         return ret;
290 }
291
292 static int update_eth_regs_async(pegasus_t * pegasus)
293 {
294         int ret;
295
296         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
297         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
298         pegasus->dr.wValue = 0;
299         pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
300         pegasus->dr.wLength = cpu_to_le16(3);
301         pegasus->ctrl_urb->transfer_buffer_length = 3;
302
303         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
304                              usb_sndctrlpipe(pegasus->usb, 0),
305                              (char *) &pegasus->dr,
306                              pegasus->eth_regs, 3, ctrl_callback, pegasus);
307
308         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
309                 if (ret == -ENODEV)
310                         netif_device_detach(pegasus->net);
311                 if (netif_msg_drv(pegasus))
312                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
313                                         __func__, ret);
314         }
315
316         return ret;
317 }
318
319 /* Returns 0 on success, error on failure */
320 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
321 {
322         int i;
323         __u8 data[4] = { phy, 0, 0, indx };
324         __le16 regdi;
325         int ret;
326
327         set_register(pegasus, PhyCtrl, 0);
328         set_registers(pegasus, PhyAddr, sizeof (data), data);
329         set_register(pegasus, PhyCtrl, (indx | PHY_READ));
330         for (i = 0; i < REG_TIMEOUT; i++) {
331                 ret = get_registers(pegasus, PhyCtrl, 1, data);
332                 if (ret == -ESHUTDOWN)
333                         goto fail;
334                 if (data[0] & PHY_DONE)
335                         break;
336         }
337         if (i < REG_TIMEOUT) {
338                 ret = get_registers(pegasus, PhyData, 2, &regdi);
339                 *regd = le16_to_cpu(regdi);
340                 return ret;
341         }
342 fail:
343         if (netif_msg_drv(pegasus))
344                 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
345
346         return ret;
347 }
348
349 static int mdio_read(struct net_device *dev, int phy_id, int loc)
350 {
351         pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
352         u16 res;
353
354         read_mii_word(pegasus, phy_id, loc, &res);
355         return (int)res;
356 }
357
358 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
359 {
360         int i;
361         __u8 data[4] = { phy, 0, 0, indx };
362         int ret;
363
364         data[1] = (u8) regd;
365         data[2] = (u8) (regd >> 8);
366         set_register(pegasus, PhyCtrl, 0);
367         set_registers(pegasus, PhyAddr, sizeof(data), data);
368         set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
369         for (i = 0; i < REG_TIMEOUT; i++) {
370                 ret = get_registers(pegasus, PhyCtrl, 1, data);
371                 if (ret == -ESHUTDOWN)
372                         goto fail;
373                 if (data[0] & PHY_DONE)
374                         break;
375         }
376         if (i < REG_TIMEOUT)
377                 return ret;
378
379 fail:
380         if (netif_msg_drv(pegasus))
381                 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
382         return -ETIMEDOUT;
383 }
384
385 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
386 {
387         pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
388
389         write_mii_word(pegasus, phy_id, loc, val);
390 }
391
392 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
393 {
394         int i;
395         __u8 tmp;
396         __le16 retdatai;
397         int ret;
398
399         set_register(pegasus, EpromCtrl, 0);
400         set_register(pegasus, EpromOffset, index);
401         set_register(pegasus, EpromCtrl, EPROM_READ);
402
403         for (i = 0; i < REG_TIMEOUT; i++) {
404                 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
405                 if (tmp & EPROM_DONE)
406                         break;
407                 if (ret == -ESHUTDOWN)
408                         goto fail;
409         }
410         if (i < REG_TIMEOUT) {
411                 ret = get_registers(pegasus, EpromData, 2, &retdatai);
412                 *retdata = le16_to_cpu(retdatai);
413                 return ret;
414         }
415
416 fail:
417         if (netif_msg_drv(pegasus))
418                 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
419         return -ETIMEDOUT;
420 }
421
422 #ifdef  PEGASUS_WRITE_EEPROM
423 static inline void enable_eprom_write(pegasus_t * pegasus)
424 {
425         __u8 tmp;
426         int ret;
427
428         get_registers(pegasus, EthCtrl2, 1, &tmp);
429         set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
430 }
431
432 static inline void disable_eprom_write(pegasus_t * pegasus)
433 {
434         __u8 tmp;
435         int ret;
436
437         get_registers(pegasus, EthCtrl2, 1, &tmp);
438         set_register(pegasus, EpromCtrl, 0);
439         set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
440 }
441
442 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
443 {
444         int i;
445         __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
446         int ret;
447
448         set_registers(pegasus, EpromOffset, 4, d);
449         enable_eprom_write(pegasus);
450         set_register(pegasus, EpromOffset, index);
451         set_registers(pegasus, EpromData, 2, &data);
452         set_register(pegasus, EpromCtrl, EPROM_WRITE);
453
454         for (i = 0; i < REG_TIMEOUT; i++) {
455                 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
456                 if (ret == -ESHUTDOWN)
457                         goto fail;
458                 if (tmp & EPROM_DONE)
459                         break;
460         }
461         disable_eprom_write(pegasus);
462         if (i < REG_TIMEOUT)
463                 return ret;
464 fail:
465         if (netif_msg_drv(pegasus))
466                 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
467         return -ETIMEDOUT;
468 }
469 #endif                          /* PEGASUS_WRITE_EEPROM */
470
471 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
472 {
473         int i;
474         __u16 w16;
475
476         for (i = 0; i < 3; i++) {
477                 read_eprom_word(pegasus, i, &w16);
478                 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
479         }
480 }
481
482 static void set_ethernet_addr(pegasus_t * pegasus)
483 {
484         __u8 node_id[6];
485
486         if (pegasus->features & PEGASUS_II) {
487                 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
488         } else {
489                 get_node_id(pegasus, node_id);
490                 set_registers(pegasus, EthID, sizeof (node_id), node_id);
491         }
492         memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
493 }
494
495 static inline int reset_mac(pegasus_t * pegasus)
496 {
497         __u8 data = 0x8;
498         int i;
499
500         set_register(pegasus, EthCtrl1, data);
501         for (i = 0; i < REG_TIMEOUT; i++) {
502                 get_registers(pegasus, EthCtrl1, 1, &data);
503                 if (~data & 0x08) {
504                         if (loopback & 1)
505                                 break;
506                         if (mii_mode && (pegasus->features & HAS_HOME_PNA))
507                                 set_register(pegasus, Gpio1, 0x34);
508                         else
509                                 set_register(pegasus, Gpio1, 0x26);
510                         set_register(pegasus, Gpio0, pegasus->features);
511                         set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
512                         break;
513                 }
514         }
515         if (i == REG_TIMEOUT)
516                 return -ETIMEDOUT;
517
518         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
519             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
520                 set_register(pegasus, Gpio0, 0x24);
521                 set_register(pegasus, Gpio0, 0x26);
522         }
523         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
524                 __u16 auxmode;
525                 read_mii_word(pegasus, 3, 0x1b, &auxmode);
526                 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
527         }
528
529         return 0;
530 }
531
532 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
533 {
534         __u16 linkpart;
535         __u8 data[4];
536         pegasus_t *pegasus = netdev_priv(dev);
537         int ret;
538
539         read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
540         data[0] = 0xc9;
541         data[1] = 0;
542         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
543                 data[1] |= 0x20;        /* set full duplex */
544         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
545                 data[1] |= 0x10;        /* set 100 Mbps */
546         if (mii_mode)
547                 data[1] = 0;
548         data[2] = (loopback & 1) ? 0x09 : 0x01;
549
550         memcpy(pegasus->eth_regs, data, sizeof (data));
551         ret = set_registers(pegasus, EthCtrl0, 3, data);
552
553         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
554             usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
555             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
556                 u16 auxmode;
557                 read_mii_word(pegasus, 0, 0x1b, &auxmode);
558                 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
559         }
560
561         return ret;
562 }
563
564 static void fill_skb_pool(pegasus_t * pegasus)
565 {
566         int i;
567
568         for (i = 0; i < RX_SKBS; i++) {
569                 if (pegasus->rx_pool[i])
570                         continue;
571                 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
572                 /*
573                  ** we give up if the allocation fail. the tasklet will be
574                  ** rescheduled again anyway...
575                  */
576                 if (pegasus->rx_pool[i] == NULL)
577                         return;
578                 skb_reserve(pegasus->rx_pool[i], 2);
579         }
580 }
581
582 static void free_skb_pool(pegasus_t * pegasus)
583 {
584         int i;
585
586         for (i = 0; i < RX_SKBS; i++) {
587                 if (pegasus->rx_pool[i]) {
588                         dev_kfree_skb(pegasus->rx_pool[i]);
589                         pegasus->rx_pool[i] = NULL;
590                 }
591         }
592 }
593
594 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
595 {
596         int i;
597         struct sk_buff *skb;
598
599         for (i = 0; i < RX_SKBS; i++) {
600                 if (likely(pegasus->rx_pool[i] != NULL)) {
601                         skb = pegasus->rx_pool[i];
602                         pegasus->rx_pool[i] = NULL;
603                         return skb;
604                 }
605         }
606         return NULL;
607 }
608
609 static void read_bulk_callback(struct urb *urb)
610 {
611         pegasus_t *pegasus = urb->context;
612         struct net_device *net;
613         int rx_status, count = urb->actual_length;
614         u8 *buf = urb->transfer_buffer;
615         __u16 pkt_len;
616
617         if (!pegasus)
618                 return;
619
620         net = pegasus->net;
621         if (!netif_device_present(net) || !netif_running(net))
622                 return;
623
624         switch (urb->status) {
625         case 0:
626                 break;
627         case -ETIME:
628                 if (netif_msg_rx_err(pegasus))
629                         pr_debug("%s: reset MAC\n", net->name);
630                 pegasus->flags &= ~PEGASUS_RX_BUSY;
631                 break;
632         case -EPIPE:            /* stall, or disconnect from TT */
633                 /* FIXME schedule work to clear the halt */
634                 if (netif_msg_rx_err(pegasus))
635                         printk(KERN_WARNING "%s: no rx stall recovery\n",
636                                         net->name);
637                 return;
638         case -ENOENT:
639         case -ECONNRESET:
640         case -ESHUTDOWN:
641                 if (netif_msg_ifdown(pegasus))
642                         pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
643                 return;
644         default:
645                 if (netif_msg_rx_err(pegasus))
646                         pr_debug("%s: RX status %d\n", net->name, urb->status);
647                 goto goon;
648         }
649
650         if (!count || count < 4)
651                 goto goon;
652
653         rx_status = buf[count - 2];
654         if (rx_status & 0x1e) {
655                 if (netif_msg_rx_err(pegasus))
656                         pr_debug("%s: RX packet error %x\n",
657                                         net->name, rx_status);
658                 pegasus->stats.rx_errors++;
659                 if (rx_status & 0x06)   // long or runt
660                         pegasus->stats.rx_length_errors++;
661                 if (rx_status & 0x08)
662                         pegasus->stats.rx_crc_errors++;
663                 if (rx_status & 0x10)   // extra bits
664                         pegasus->stats.rx_frame_errors++;
665                 goto goon;
666         }
667         if (pegasus->chip == 0x8513) {
668                 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
669                 pkt_len &= 0x0fff;
670                 pegasus->rx_skb->data += 2;
671         } else {
672                 pkt_len = buf[count - 3] << 8;
673                 pkt_len += buf[count - 4];
674                 pkt_len &= 0xfff;
675                 pkt_len -= 8;
676         }
677
678         /*
679          * If the packet is unreasonably long, quietly drop it rather than
680          * kernel panicing by calling skb_put.
681          */
682         if (pkt_len > PEGASUS_MTU)
683                 goto goon;
684
685         /*
686          * at this point we are sure pegasus->rx_skb != NULL
687          * so we go ahead and pass up the packet.
688          */
689         skb_put(pegasus->rx_skb, pkt_len);
690         pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
691         netif_rx(pegasus->rx_skb);
692         pegasus->stats.rx_packets++;
693         pegasus->stats.rx_bytes += pkt_len;
694
695         if (pegasus->flags & PEGASUS_UNPLUG)
696                 return;
697
698         spin_lock(&pegasus->rx_pool_lock);
699         pegasus->rx_skb = pull_skb(pegasus);
700         spin_unlock(&pegasus->rx_pool_lock);
701
702         if (pegasus->rx_skb == NULL)
703                 goto tl_sched;
704 goon:
705         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
706                           usb_rcvbulkpipe(pegasus->usb, 1),
707                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
708                           read_bulk_callback, pegasus);
709         rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
710         if (rx_status == -ENODEV)
711                 netif_device_detach(pegasus->net);
712         else if (rx_status) {
713                 pegasus->flags |= PEGASUS_RX_URB_FAIL;
714                 goto tl_sched;
715         } else {
716                 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
717         }
718
719         return;
720
721 tl_sched:
722         tasklet_schedule(&pegasus->rx_tl);
723 }
724
725 static void rx_fixup(unsigned long data)
726 {
727         pegasus_t *pegasus;
728         unsigned long flags;
729         int status;
730
731         pegasus = (pegasus_t *) data;
732         if (pegasus->flags & PEGASUS_UNPLUG)
733                 return;
734
735         spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
736         fill_skb_pool(pegasus);
737         if (pegasus->flags & PEGASUS_RX_URB_FAIL)
738                 if (pegasus->rx_skb)
739                         goto try_again;
740         if (pegasus->rx_skb == NULL) {
741                 pegasus->rx_skb = pull_skb(pegasus);
742         }
743         if (pegasus->rx_skb == NULL) {
744                 if (netif_msg_rx_err(pegasus))
745                         printk(KERN_WARNING "%s: low on memory\n",
746                                         pegasus->net->name);
747                 tasklet_schedule(&pegasus->rx_tl);
748                 goto done;
749         }
750         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
751                           usb_rcvbulkpipe(pegasus->usb, 1),
752                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
753                           read_bulk_callback, pegasus);
754 try_again:
755         status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
756         if (status == -ENODEV)
757                 netif_device_detach(pegasus->net);
758         else if (status) {
759                 pegasus->flags |= PEGASUS_RX_URB_FAIL;
760                 tasklet_schedule(&pegasus->rx_tl);
761         } else {
762                 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
763         }
764 done:
765         spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
766 }
767
768 static void write_bulk_callback(struct urb *urb)
769 {
770         pegasus_t *pegasus = urb->context;
771         struct net_device *net;
772
773         if (!pegasus)
774                 return;
775
776         net = pegasus->net;
777
778         if (!netif_device_present(net) || !netif_running(net))
779                 return;
780
781         switch (urb->status) {
782         case -EPIPE:
783                 /* FIXME schedule_work() to clear the tx halt */
784                 netif_stop_queue(net);
785                 if (netif_msg_tx_err(pegasus))
786                         printk(KERN_WARNING "%s: no tx stall recovery\n",
787                                         net->name);
788                 return;
789         case -ENOENT:
790         case -ECONNRESET:
791         case -ESHUTDOWN:
792                 if (netif_msg_ifdown(pegasus))
793                         pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
794                 return;
795         default:
796                 if (netif_msg_tx_err(pegasus))
797                         pr_info("%s: TX status %d\n", net->name, urb->status);
798                 /* FALL THROUGH */
799         case 0:
800                 break;
801         }
802
803         net->trans_start = jiffies;
804         netif_wake_queue(net);
805 }
806
807 static void intr_callback(struct urb *urb)
808 {
809         pegasus_t *pegasus = urb->context;
810         struct net_device *net;
811         int status;
812
813         if (!pegasus)
814                 return;
815         net = pegasus->net;
816
817         switch (urb->status) {
818         case 0:
819                 break;
820         case -ECONNRESET:       /* unlink */
821         case -ENOENT:
822         case -ESHUTDOWN:
823                 return;
824         default:
825                 /* some Pegasus-I products report LOTS of data
826                  * toggle errors... avoid log spamming
827                  */
828                 if (netif_msg_timer(pegasus))
829                         pr_debug("%s: intr status %d\n", net->name,
830                                         urb->status);
831         }
832
833         if (urb->actual_length >= 6) {
834                 u8      * d = urb->transfer_buffer;
835
836                 /* byte 0 == tx_status1, reg 2B */
837                 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
838                                         |LATE_COL|JABBER_TIMEOUT)) {
839                         pegasus->stats.tx_errors++;
840                         if (d[0] & TX_UNDERRUN)
841                                 pegasus->stats.tx_fifo_errors++;
842                         if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
843                                 pegasus->stats.tx_aborted_errors++;
844                         if (d[0] & LATE_COL)
845                                 pegasus->stats.tx_window_errors++;
846                 }
847
848                 /* d[5].LINK_STATUS lies on some adapters.
849                  * d[0].NO_CARRIER kicks in only with failed TX.
850                  * ... so monitoring with MII may be safest.
851                  */
852
853                 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
854                 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
855         }
856
857         status = usb_submit_urb(urb, GFP_ATOMIC);
858         if (status == -ENODEV)
859                 netif_device_detach(pegasus->net);
860         if (status && netif_msg_timer(pegasus))
861                 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
862                                 net->name, status);
863 }
864
865 static void pegasus_tx_timeout(struct net_device *net)
866 {
867         pegasus_t *pegasus = netdev_priv(net);
868         if (netif_msg_timer(pegasus))
869                 printk(KERN_WARNING "%s: tx timeout\n", net->name);
870         usb_unlink_urb(pegasus->tx_urb);
871         pegasus->stats.tx_errors++;
872 }
873
874 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
875 {
876         pegasus_t *pegasus = netdev_priv(net);
877         int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
878         int res;
879         __u16 l16 = skb->len;
880
881         netif_stop_queue(net);
882
883         ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
884         skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
885         usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
886                           usb_sndbulkpipe(pegasus->usb, 2),
887                           pegasus->tx_buff, count,
888                           write_bulk_callback, pegasus);
889         if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
890                 if (netif_msg_tx_err(pegasus))
891                         printk(KERN_WARNING "%s: fail tx, %d\n",
892                                         net->name, res);
893                 switch (res) {
894                 case -EPIPE:            /* stall, or disconnect from TT */
895                         /* cleanup should already have been scheduled */
896                         break;
897                 case -ENODEV:           /* disconnect() upcoming */
898                         netif_device_detach(pegasus->net);
899                         break;
900                 default:
901                         pegasus->stats.tx_errors++;
902                         netif_start_queue(net);
903                 }
904         } else {
905                 pegasus->stats.tx_packets++;
906                 pegasus->stats.tx_bytes += skb->len;
907                 net->trans_start = jiffies;
908         }
909         dev_kfree_skb(skb);
910
911         return 0;
912 }
913
914 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
915 {
916         return &((pegasus_t *) netdev_priv(dev))->stats;
917 }
918
919 static inline void disable_net_traffic(pegasus_t * pegasus)
920 {
921         int tmp = 0;
922
923         set_registers(pegasus, EthCtrl0, 2, &tmp);
924 }
925
926 static inline void get_interrupt_interval(pegasus_t * pegasus)
927 {
928         __u8 data[2];
929
930         read_eprom_word(pegasus, 4, (__u16 *) data);
931         if (pegasus->usb->speed != USB_SPEED_HIGH) {
932                 if (data[1] < 0x80) {
933                         if (netif_msg_timer(pegasus))
934                                 dev_info(&pegasus->intf->dev, "intr interval "
935                                         "changed from %ums to %ums\n",
936                                         data[1], 0x80);
937                         data[1] = 0x80;
938 #ifdef PEGASUS_WRITE_EEPROM
939                         write_eprom_word(pegasus, 4, *(__u16 *) data);
940 #endif
941                 }
942         }
943         pegasus->intr_interval = data[1];
944 }
945
946 static void set_carrier(struct net_device *net)
947 {
948         pegasus_t *pegasus = netdev_priv(net);
949         u16 tmp;
950
951         if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
952                 return;
953
954         if (tmp & BMSR_LSTATUS)
955                 netif_carrier_on(net);
956         else
957                 netif_carrier_off(net);
958 }
959
960 static void free_all_urbs(pegasus_t * pegasus)
961 {
962         usb_free_urb(pegasus->intr_urb);
963         usb_free_urb(pegasus->tx_urb);
964         usb_free_urb(pegasus->rx_urb);
965         usb_free_urb(pegasus->ctrl_urb);
966 }
967
968 static void unlink_all_urbs(pegasus_t * pegasus)
969 {
970         usb_kill_urb(pegasus->intr_urb);
971         usb_kill_urb(pegasus->tx_urb);
972         usb_kill_urb(pegasus->rx_urb);
973         usb_kill_urb(pegasus->ctrl_urb);
974 }
975
976 static int alloc_urbs(pegasus_t * pegasus)
977 {
978         pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
979         if (!pegasus->ctrl_urb) {
980                 return 0;
981         }
982         pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
983         if (!pegasus->rx_urb) {
984                 usb_free_urb(pegasus->ctrl_urb);
985                 return 0;
986         }
987         pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
988         if (!pegasus->tx_urb) {
989                 usb_free_urb(pegasus->rx_urb);
990                 usb_free_urb(pegasus->ctrl_urb);
991                 return 0;
992         }
993         pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
994         if (!pegasus->intr_urb) {
995                 usb_free_urb(pegasus->tx_urb);
996                 usb_free_urb(pegasus->rx_urb);
997                 usb_free_urb(pegasus->ctrl_urb);
998                 return 0;
999         }
1000
1001         return 1;
1002 }
1003
1004 static int pegasus_open(struct net_device *net)
1005 {
1006         pegasus_t *pegasus = netdev_priv(net);
1007         int res;
1008
1009         if (pegasus->rx_skb == NULL)
1010                 pegasus->rx_skb = pull_skb(pegasus);
1011         /*
1012          ** Note: no point to free the pool.  it is empty :-)
1013          */
1014         if (!pegasus->rx_skb)
1015                 return -ENOMEM;
1016
1017         res = set_registers(pegasus, EthID, 6, net->dev_addr);
1018         
1019         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1020                           usb_rcvbulkpipe(pegasus->usb, 1),
1021                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
1022                           read_bulk_callback, pegasus);
1023         if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1024                 if (res == -ENODEV)
1025                         netif_device_detach(pegasus->net);
1026                 if (netif_msg_ifup(pegasus))
1027                         pr_debug("%s: failed rx_urb, %d", net->name, res);
1028                 goto exit;
1029         }
1030
1031         usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1032                          usb_rcvintpipe(pegasus->usb, 3),
1033                          pegasus->intr_buff, sizeof (pegasus->intr_buff),
1034                          intr_callback, pegasus, pegasus->intr_interval);
1035         if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1036                 if (res == -ENODEV)
1037                         netif_device_detach(pegasus->net);
1038                 if (netif_msg_ifup(pegasus))
1039                         pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1040                 usb_kill_urb(pegasus->rx_urb);
1041                 goto exit;
1042         }
1043         if ((res = enable_net_traffic(net, pegasus->usb))) {
1044                 if (netif_msg_ifup(pegasus))
1045                         pr_debug("%s: can't enable_net_traffic() - %d\n",
1046                                         net->name, res);
1047                 res = -EIO;
1048                 usb_kill_urb(pegasus->rx_urb);
1049                 usb_kill_urb(pegasus->intr_urb);
1050                 free_skb_pool(pegasus);
1051                 goto exit;
1052         }
1053         set_carrier(net);
1054         netif_start_queue(net);
1055         if (netif_msg_ifup(pegasus))
1056                 pr_debug("%s: open\n", net->name);
1057         res = 0;
1058 exit:
1059         return res;
1060 }
1061
1062 static int pegasus_close(struct net_device *net)
1063 {
1064         pegasus_t *pegasus = netdev_priv(net);
1065
1066         netif_stop_queue(net);
1067         if (!(pegasus->flags & PEGASUS_UNPLUG))
1068                 disable_net_traffic(pegasus);
1069         tasklet_kill(&pegasus->rx_tl);
1070         unlink_all_urbs(pegasus);
1071
1072         return 0;
1073 }
1074
1075 static void pegasus_get_drvinfo(struct net_device *dev,
1076                                 struct ethtool_drvinfo *info)
1077 {
1078         pegasus_t *pegasus = netdev_priv(dev);
1079         strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1080         strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1081         usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1082 }
1083
1084 /* also handles three patterns of some kind in hardware */
1085 #define WOL_SUPPORTED   (WAKE_MAGIC|WAKE_PHY)
1086
1087 static void
1088 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1089 {
1090         pegasus_t       *pegasus = netdev_priv(dev);
1091
1092         wol->supported = WAKE_MAGIC | WAKE_PHY;
1093         wol->wolopts = pegasus->wolopts;
1094 }
1095
1096 static int
1097 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1098 {
1099         pegasus_t       *pegasus = netdev_priv(dev);
1100         u8              reg78 = 0x04;
1101         
1102         if (wol->wolopts & ~WOL_SUPPORTED)
1103                 return -EINVAL;
1104
1105         if (wol->wolopts & WAKE_MAGIC)
1106                 reg78 |= 0x80;
1107         if (wol->wolopts & WAKE_PHY)
1108                 reg78 |= 0x40;
1109         /* FIXME this 0x10 bit still needs to get set in the chip... */
1110         if (wol->wolopts)
1111                 pegasus->eth_regs[0] |= 0x10;
1112         else
1113                 pegasus->eth_regs[0] &= ~0x10;
1114         pegasus->wolopts = wol->wolopts;
1115         return set_register(pegasus, WakeupControl, reg78);
1116 }
1117
1118 static inline void pegasus_reset_wol(struct net_device *dev)
1119 {
1120         struct ethtool_wolinfo wol;
1121         
1122         memset(&wol, 0, sizeof wol);
1123         (void) pegasus_set_wol(dev, &wol);
1124 }
1125
1126 static int
1127 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1128 {
1129         pegasus_t *pegasus;
1130
1131         pegasus = netdev_priv(dev);
1132         mii_ethtool_gset(&pegasus->mii, ecmd);
1133         return 0;
1134 }
1135
1136 static int
1137 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1138 {
1139         pegasus_t *pegasus = netdev_priv(dev);
1140         return mii_ethtool_sset(&pegasus->mii, ecmd);
1141 }
1142
1143 static int pegasus_nway_reset(struct net_device *dev)
1144 {
1145         pegasus_t *pegasus = netdev_priv(dev);
1146         return mii_nway_restart(&pegasus->mii);
1147 }
1148
1149 static u32 pegasus_get_link(struct net_device *dev)
1150 {
1151         pegasus_t *pegasus = netdev_priv(dev);
1152         return mii_link_ok(&pegasus->mii);
1153 }
1154
1155 static u32 pegasus_get_msglevel(struct net_device *dev)
1156 {
1157         pegasus_t *pegasus = netdev_priv(dev);
1158         return pegasus->msg_enable;
1159 }
1160
1161 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1162 {
1163         pegasus_t *pegasus = netdev_priv(dev);
1164         pegasus->msg_enable = v;
1165 }
1166
1167 static struct ethtool_ops ops = {
1168         .get_drvinfo = pegasus_get_drvinfo,
1169         .get_settings = pegasus_get_settings,
1170         .set_settings = pegasus_set_settings,
1171         .nway_reset = pegasus_nway_reset,
1172         .get_link = pegasus_get_link,
1173         .get_msglevel = pegasus_get_msglevel,
1174         .set_msglevel = pegasus_set_msglevel,
1175         .get_wol = pegasus_get_wol,
1176         .set_wol = pegasus_set_wol,
1177 };
1178
1179 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1180 {
1181         __u16 *data = (__u16 *) & rq->ifr_ifru;
1182         pegasus_t *pegasus = netdev_priv(net);
1183         int res;
1184
1185         switch (cmd) {
1186         case SIOCDEVPRIVATE:
1187                 data[0] = pegasus->phy;
1188         case SIOCDEVPRIVATE + 1:
1189                 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1190                 res = 0;
1191                 break;
1192         case SIOCDEVPRIVATE + 2:
1193                 if (!capable(CAP_NET_ADMIN))
1194                         return -EPERM;
1195                 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1196                 res = 0;
1197                 break;
1198         default:
1199                 res = -EOPNOTSUPP;
1200         }
1201         return res;
1202 }
1203
1204 static void pegasus_set_multicast(struct net_device *net)
1205 {
1206         pegasus_t *pegasus = netdev_priv(net);
1207
1208         if (net->flags & IFF_PROMISC) {
1209                 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1210                 if (netif_msg_link(pegasus))
1211                         pr_info("%s: Promiscuous mode enabled.\n", net->name);
1212         } else if (net->mc_count || (net->flags & IFF_ALLMULTI)) {
1213                 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1214                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1215                 if (netif_msg_link(pegasus))
1216                         pr_info("%s: set allmulti\n", net->name);
1217         } else {
1218                 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1219                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1220         }
1221
1222         pegasus->ctrl_urb->status = 0;
1223
1224         pegasus->flags |= ETH_REGS_CHANGE;
1225         ctrl_callback(pegasus->ctrl_urb);
1226 }
1227
1228 static __u8 mii_phy_probe(pegasus_t * pegasus)
1229 {
1230         int i;
1231         __u16 tmp;
1232
1233         for (i = 0; i < 32; i++) {
1234                 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1235                 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1236                         continue;
1237                 else
1238                         return i;
1239         }
1240
1241         return 0xff;
1242 }
1243
1244 static inline void setup_pegasus_II(pegasus_t * pegasus)
1245 {
1246         __u8 data = 0xa5;
1247         
1248         set_register(pegasus, Reg1d, 0);
1249         set_register(pegasus, Reg7b, 1);
1250         mdelay(100);
1251         if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1252                 set_register(pegasus, Reg7b, 0);
1253         else
1254                 set_register(pegasus, Reg7b, 2);
1255
1256         set_register(pegasus, 0x83, data);
1257         get_registers(pegasus, 0x83, 1, &data);
1258
1259         if (data == 0xa5) {
1260                 pegasus->chip = 0x8513;
1261         } else {
1262                 pegasus->chip = 0;
1263         }
1264
1265         set_register(pegasus, 0x80, 0xc0);
1266         set_register(pegasus, 0x83, 0xff);
1267         set_register(pegasus, 0x84, 0x01);
1268         
1269         if (pegasus->features & HAS_HOME_PNA && mii_mode)
1270                 set_register(pegasus, Reg81, 6);
1271         else
1272                 set_register(pegasus, Reg81, 2);
1273 }
1274
1275
1276 static struct workqueue_struct *pegasus_workqueue = NULL;
1277 #define CARRIER_CHECK_DELAY (2 * HZ)
1278
1279 static void check_carrier(struct work_struct *work)
1280 {
1281         pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1282         set_carrier(pegasus->net);
1283         if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1284                 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1285                         CARRIER_CHECK_DELAY);
1286         }
1287 }
1288
1289 static int pegasus_blacklisted(struct usb_device *udev)
1290 {
1291         struct usb_device_descriptor *udd = &udev->descriptor;
1292
1293         /* Special quirk to keep the driver from handling the Belkin Bluetooth
1294          * dongle which happens to have the same ID.
1295          */
1296         if ((udd->idVendor == VENDOR_BELKIN && udd->idProduct == 0x0121) &&
1297             (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1298             (udd->bDeviceProtocol == 1))
1299                 return 1;
1300
1301         return 0;
1302 }
1303
1304 static int pegasus_probe(struct usb_interface *intf,
1305                          const struct usb_device_id *id)
1306 {
1307         struct usb_device *dev = interface_to_usbdev(intf);
1308         struct net_device *net;
1309         pegasus_t *pegasus;
1310         int dev_index = id - pegasus_ids;
1311         int res = -ENOMEM;
1312
1313         usb_get_dev(dev);
1314
1315         if (pegasus_blacklisted(dev)) {
1316                 res = -ENODEV;
1317                 goto out;
1318         }
1319
1320         net = alloc_etherdev(sizeof(struct pegasus));
1321         if (!net) {
1322                 dev_err(&intf->dev, "can't allocate %s\n", "device");
1323                 goto out;
1324         }
1325
1326         pegasus = netdev_priv(net);
1327         pegasus->dev_index = dev_index;
1328         init_waitqueue_head(&pegasus->ctrl_wait);
1329
1330         if (!alloc_urbs(pegasus)) {
1331                 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1332                 goto out1;
1333         }
1334
1335         tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1336
1337         INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1338
1339         pegasus->intf = intf;
1340         pegasus->usb = dev;
1341         pegasus->net = net;
1342         net->open = pegasus_open;
1343         net->stop = pegasus_close;
1344         net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1345         net->tx_timeout = pegasus_tx_timeout;
1346         net->do_ioctl = pegasus_ioctl;
1347         net->hard_start_xmit = pegasus_start_xmit;
1348         net->set_multicast_list = pegasus_set_multicast;
1349         net->get_stats = pegasus_netdev_stats;
1350         SET_ETHTOOL_OPS(net, &ops);
1351         pegasus->mii.dev = net;
1352         pegasus->mii.mdio_read = mdio_read;
1353         pegasus->mii.mdio_write = mdio_write;
1354         pegasus->mii.phy_id_mask = 0x1f;
1355         pegasus->mii.reg_num_mask = 0x1f;
1356         spin_lock_init(&pegasus->rx_pool_lock);
1357         pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1358                                 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1359
1360         pegasus->features = usb_dev_id[dev_index].private;
1361         get_interrupt_interval(pegasus);
1362         if (reset_mac(pegasus)) {
1363                 dev_err(&intf->dev, "can't reset MAC\n");
1364                 res = -EIO;
1365                 goto out2;
1366         }
1367         set_ethernet_addr(pegasus);
1368         fill_skb_pool(pegasus);
1369         if (pegasus->features & PEGASUS_II) {
1370                 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1371                 setup_pegasus_II(pegasus);
1372         }
1373         pegasus->phy = mii_phy_probe(pegasus);
1374         if (pegasus->phy == 0xff) {
1375                 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1376                 pegasus->phy = 1;
1377         }
1378         pegasus->mii.phy_id = pegasus->phy;
1379         usb_set_intfdata(intf, pegasus);
1380         SET_NETDEV_DEV(net, &intf->dev);
1381         pegasus_reset_wol(net);
1382         res = register_netdev(net);
1383         if (res)
1384                 goto out3;
1385         queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1386                                 CARRIER_CHECK_DELAY);
1387
1388         dev_info(&intf->dev, "%s, %s, %pM\n",
1389                  net->name,
1390                  usb_dev_id[dev_index].name,
1391                  net->dev_addr);
1392         return 0;
1393
1394 out3:
1395         usb_set_intfdata(intf, NULL);
1396         free_skb_pool(pegasus);
1397 out2:
1398         free_all_urbs(pegasus);
1399 out1:
1400         free_netdev(net);
1401 out:
1402         usb_put_dev(dev);
1403         return res;
1404 }
1405
1406 static void pegasus_disconnect(struct usb_interface *intf)
1407 {
1408         struct pegasus *pegasus = usb_get_intfdata(intf);
1409
1410         usb_set_intfdata(intf, NULL);
1411         if (!pegasus) {
1412                 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1413                 return;
1414         }
1415
1416         pegasus->flags |= PEGASUS_UNPLUG;
1417         cancel_delayed_work(&pegasus->carrier_check);
1418         unregister_netdev(pegasus->net);
1419         usb_put_dev(interface_to_usbdev(intf));
1420         unlink_all_urbs(pegasus);
1421         free_all_urbs(pegasus);
1422         free_skb_pool(pegasus);
1423         if (pegasus->rx_skb != NULL) {
1424                 dev_kfree_skb(pegasus->rx_skb);
1425                 pegasus->rx_skb = NULL;
1426         }
1427         free_netdev(pegasus->net);
1428 }
1429
1430 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1431 {
1432         struct pegasus *pegasus = usb_get_intfdata(intf);
1433         
1434         netif_device_detach (pegasus->net);
1435         cancel_delayed_work(&pegasus->carrier_check);
1436         if (netif_running(pegasus->net)) {
1437                 usb_kill_urb(pegasus->rx_urb);
1438                 usb_kill_urb(pegasus->intr_urb);
1439         }
1440         return 0;
1441 }
1442
1443 static int pegasus_resume (struct usb_interface *intf)
1444 {
1445         struct pegasus *pegasus = usb_get_intfdata(intf);
1446
1447         netif_device_attach (pegasus->net);
1448         if (netif_running(pegasus->net)) {
1449                 pegasus->rx_urb->status = 0;
1450                 pegasus->rx_urb->actual_length = 0;
1451                 read_bulk_callback(pegasus->rx_urb);
1452
1453                 pegasus->intr_urb->status = 0;
1454                 pegasus->intr_urb->actual_length = 0;
1455                 intr_callback(pegasus->intr_urb);
1456         }
1457         queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1458                                 CARRIER_CHECK_DELAY);
1459         return 0;
1460 }
1461
1462 static struct usb_driver pegasus_driver = {
1463         .name = driver_name,
1464         .probe = pegasus_probe,
1465         .disconnect = pegasus_disconnect,
1466         .id_table = pegasus_ids,
1467         .suspend = pegasus_suspend,
1468         .resume = pegasus_resume,
1469 };
1470
1471 static void parse_id(char *id)
1472 {
1473         unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1474         char *token, *name=NULL;
1475
1476         if ((token = strsep(&id, ":")) != NULL)
1477                 name = token;
1478         /* name now points to a null terminated string*/
1479         if ((token = strsep(&id, ":")) != NULL)
1480                 vendor_id = simple_strtoul(token, NULL, 16);
1481         if ((token = strsep(&id, ":")) != NULL)
1482                 device_id = simple_strtoul(token, NULL, 16);
1483         flags = simple_strtoul(id, NULL, 16);
1484         pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1485                 driver_name, name, vendor_id, device_id, flags);
1486
1487         if (vendor_id > 0x10000 || vendor_id == 0)
1488                 return;
1489         if (device_id > 0x10000 || device_id == 0)
1490                 return;
1491
1492         for (i=0; usb_dev_id[i].name; i++);
1493         usb_dev_id[i].name = name;
1494         usb_dev_id[i].vendor = vendor_id;
1495         usb_dev_id[i].device = device_id;
1496         usb_dev_id[i].private = flags;
1497         pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1498         pegasus_ids[i].idVendor = vendor_id;
1499         pegasus_ids[i].idProduct = device_id;
1500 }
1501
1502 static int __init pegasus_init(void)
1503 {
1504         pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1505         if (devid)
1506                 parse_id(devid);
1507         pegasus_workqueue = create_singlethread_workqueue("pegasus");
1508         if (!pegasus_workqueue)
1509                 return -ENOMEM;
1510         return usb_register(&pegasus_driver);
1511 }
1512
1513 static void __exit pegasus_exit(void)
1514 {
1515         destroy_workqueue(pegasus_workqueue);
1516         usb_deregister(&pegasus_driver);
1517 }
1518
1519 module_init(pegasus_init);
1520 module_exit(pegasus_exit);