Merge branch 'master' into upstream
[linux-2.6] / drivers / usb / net / 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 "v0.6.13 (2005/11/13)"
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, struct pt_regs *regs)
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))
121                         dev_dbg(&pegasus->intf->dev, "%s, status %d\n",
122                                 __FUNCTION__, 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                                         __FUNCTION__);
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                 if (ret == -ENODEV)
167                         netif_device_detach(pegasus->net);
168                 if (netif_msg_drv(pegasus))
169                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
170                                         __FUNCTION__, ret);
171                 goto out;
172         }
173
174         schedule();
175 out:
176         remove_wait_queue(&pegasus->ctrl_wait, &wait);
177         memcpy(data, buffer, size);
178         kfree(buffer);
179
180         return ret;
181 }
182
183 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
184                          void *data)
185 {
186         int ret;
187         char *buffer;
188         DECLARE_WAITQUEUE(wait, current);
189
190         buffer = kmalloc(size, GFP_KERNEL);
191         if (!buffer) {
192                 if (netif_msg_drv(pegasus))
193                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
194                                         __FUNCTION__);
195                 return -ENOMEM;
196         }
197         memcpy(buffer, data, size);
198
199         add_wait_queue(&pegasus->ctrl_wait, &wait);
200         set_current_state(TASK_UNINTERRUPTIBLE);
201         while (pegasus->flags & ETH_REGS_CHANGED)
202                 schedule();
203         remove_wait_queue(&pegasus->ctrl_wait, &wait);
204         set_current_state(TASK_RUNNING);
205
206         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
207         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
208         pegasus->dr.wValue = cpu_to_le16(0);
209         pegasus->dr.wIndex = cpu_to_le16p(&indx);
210         pegasus->dr.wLength = cpu_to_le16p(&size);
211         pegasus->ctrl_urb->transfer_buffer_length = size;
212
213         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
214                              usb_sndctrlpipe(pegasus->usb, 0),
215                              (char *) &pegasus->dr,
216                              buffer, size, ctrl_callback, pegasus);
217
218         add_wait_queue(&pegasus->ctrl_wait, &wait);
219         set_current_state(TASK_UNINTERRUPTIBLE);
220
221         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
222                 if (ret == -ENODEV)
223                         netif_device_detach(pegasus->net);
224                 if (netif_msg_drv(pegasus))
225                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
226                                         __FUNCTION__, ret);
227                 goto out;
228         }
229
230         schedule();
231 out:
232         remove_wait_queue(&pegasus->ctrl_wait, &wait);
233         kfree(buffer);
234
235         return ret;
236 }
237
238 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
239 {
240         int ret;
241         char *tmp;
242         DECLARE_WAITQUEUE(wait, current);
243
244         tmp = kmalloc(1, GFP_KERNEL);
245         if (!tmp) {
246                 if (netif_msg_drv(pegasus))
247                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
248                                         __FUNCTION__);
249                 return -ENOMEM;
250         }
251         memcpy(tmp, &data, 1);
252         add_wait_queue(&pegasus->ctrl_wait, &wait);
253         set_current_state(TASK_UNINTERRUPTIBLE);
254         while (pegasus->flags & ETH_REGS_CHANGED)
255                 schedule();
256         remove_wait_queue(&pegasus->ctrl_wait, &wait);
257         set_current_state(TASK_RUNNING);
258
259         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
260         pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
261         pegasus->dr.wValue = cpu_to_le16(data);
262         pegasus->dr.wIndex = cpu_to_le16p(&indx);
263         pegasus->dr.wLength = cpu_to_le16(1);
264         pegasus->ctrl_urb->transfer_buffer_length = 1;
265
266         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
267                              usb_sndctrlpipe(pegasus->usb, 0),
268                              (char *) &pegasus->dr,
269                              tmp, 1, ctrl_callback, pegasus);
270
271         add_wait_queue(&pegasus->ctrl_wait, &wait);
272         set_current_state(TASK_UNINTERRUPTIBLE);
273
274         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
275                 if (ret == -ENODEV)
276                         netif_device_detach(pegasus->net);
277                 if (netif_msg_drv(pegasus))
278                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
279                                         __FUNCTION__, ret);
280                 goto out;
281         }
282
283         schedule();
284 out:
285         remove_wait_queue(&pegasus->ctrl_wait, &wait);
286         kfree(tmp);
287
288         return ret;
289 }
290
291 static int update_eth_regs_async(pegasus_t * pegasus)
292 {
293         int ret;
294
295         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
296         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
297         pegasus->dr.wValue = 0;
298         pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
299         pegasus->dr.wLength = cpu_to_le16(3);
300         pegasus->ctrl_urb->transfer_buffer_length = 3;
301
302         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
303                              usb_sndctrlpipe(pegasus->usb, 0),
304                              (char *) &pegasus->dr,
305                              pegasus->eth_regs, 3, ctrl_callback, pegasus);
306
307         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
308                 if (ret == -ENODEV)
309                         netif_device_detach(pegasus->net);
310                 if (netif_msg_drv(pegasus))
311                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
312                                         __FUNCTION__, ret);
313         }
314
315         return ret;
316 }
317
318 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
319 {
320         int i;
321         __u8 data[4] = { phy, 0, 0, indx };
322         __le16 regdi;
323         int ret;
324
325         set_register(pegasus, PhyCtrl, 0);
326         set_registers(pegasus, PhyAddr, sizeof (data), data);
327         set_register(pegasus, PhyCtrl, (indx | PHY_READ));
328         for (i = 0; i < REG_TIMEOUT; i++) {
329                 ret = get_registers(pegasus, PhyCtrl, 1, data);
330                 if (ret == -ESHUTDOWN)
331                         goto fail;
332                 if (data[0] & PHY_DONE)
333                         break;
334         }
335         if (i < REG_TIMEOUT) {
336                 ret = get_registers(pegasus, PhyData, 2, &regdi);
337                 *regd = le16_to_cpu(regdi);
338                 return ret;
339         }
340 fail:
341         if (netif_msg_drv(pegasus))
342                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
343
344         return ret;
345 }
346
347 static int mdio_read(struct net_device *dev, int phy_id, int loc)
348 {
349         pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
350         u16 res;
351
352         read_mii_word(pegasus, phy_id, loc, &res);
353         return (int)res;
354 }
355
356 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
357 {
358         int i;
359         __u8 data[4] = { phy, 0, 0, indx };
360         int ret;
361
362         data[1] = (u8) regd;
363         data[2] = (u8) (regd >> 8);
364         set_register(pegasus, PhyCtrl, 0);
365         set_registers(pegasus, PhyAddr, sizeof(data), data);
366         set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
367         for (i = 0; i < REG_TIMEOUT; i++) {
368                 ret = get_registers(pegasus, PhyCtrl, 1, data);
369                 if (ret == -ESHUTDOWN)
370                         goto fail;
371                 if (data[0] & PHY_DONE)
372                         break;
373         }
374         if (i < REG_TIMEOUT)
375                 return ret;
376
377 fail:
378         if (netif_msg_drv(pegasus))
379                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
380         return -ETIMEDOUT;
381 }
382
383 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
384 {
385         pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
386
387         write_mii_word(pegasus, phy_id, loc, val);
388 }
389
390 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
391 {
392         int i;
393         __u8 tmp;
394         __le16 retdatai;
395         int ret;
396
397         set_register(pegasus, EpromCtrl, 0);
398         set_register(pegasus, EpromOffset, index);
399         set_register(pegasus, EpromCtrl, EPROM_READ);
400
401         for (i = 0; i < REG_TIMEOUT; i++) {
402                 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
403                 if (tmp & EPROM_DONE)
404                         break;
405                 if (ret == -ESHUTDOWN)
406                         goto fail;
407         }
408         if (i < REG_TIMEOUT) {
409                 ret = get_registers(pegasus, EpromData, 2, &retdatai);
410                 *retdata = le16_to_cpu(retdatai);
411                 return ret;
412         }
413
414 fail:
415         if (netif_msg_drv(pegasus))
416                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
417         return -ETIMEDOUT;
418 }
419
420 #ifdef  PEGASUS_WRITE_EEPROM
421 static inline void enable_eprom_write(pegasus_t * pegasus)
422 {
423         __u8 tmp;
424         int ret;
425
426         get_registers(pegasus, EthCtrl2, 1, &tmp);
427         set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
428 }
429
430 static inline void disable_eprom_write(pegasus_t * pegasus)
431 {
432         __u8 tmp;
433         int ret;
434
435         get_registers(pegasus, EthCtrl2, 1, &tmp);
436         set_register(pegasus, EpromCtrl, 0);
437         set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
438 }
439
440 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
441 {
442         int i;
443         __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
444         int ret;
445
446         set_registers(pegasus, EpromOffset, 4, d);
447         enable_eprom_write(pegasus);
448         set_register(pegasus, EpromOffset, index);
449         set_registers(pegasus, EpromData, 2, &data);
450         set_register(pegasus, EpromCtrl, EPROM_WRITE);
451
452         for (i = 0; i < REG_TIMEOUT; i++) {
453                 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
454                 if (ret == -ESHUTDOWN)
455                         goto fail;
456                 if (tmp & EPROM_DONE)
457                         break;
458         }
459         disable_eprom_write(pegasus);
460         if (i < REG_TIMEOUT)
461                 return ret;
462 fail:
463         if (netif_msg_drv(pegasus))
464                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
465         return -ETIMEDOUT;
466 }
467 #endif                          /* PEGASUS_WRITE_EEPROM */
468
469 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
470 {
471         int i;
472         __u16 w16;
473
474         for (i = 0; i < 3; i++) {
475                 read_eprom_word(pegasus, i, &w16);
476                 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
477         }
478 }
479
480 static void set_ethernet_addr(pegasus_t * pegasus)
481 {
482         __u8 node_id[6];
483
484         get_node_id(pegasus, node_id);
485         set_registers(pegasus, EthID, sizeof (node_id), node_id);
486         memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
487 }
488
489 static inline int reset_mac(pegasus_t * pegasus)
490 {
491         __u8 data = 0x8;
492         int i;
493
494         set_register(pegasus, EthCtrl1, data);
495         for (i = 0; i < REG_TIMEOUT; i++) {
496                 get_registers(pegasus, EthCtrl1, 1, &data);
497                 if (~data & 0x08) {
498                         if (loopback & 1)
499                                 break;
500                         if (mii_mode && (pegasus->features & HAS_HOME_PNA))
501                                 set_register(pegasus, Gpio1, 0x34);
502                         else
503                                 set_register(pegasus, Gpio1, 0x26);
504                         set_register(pegasus, Gpio0, pegasus->features);
505                         set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
506                         break;
507                 }
508         }
509         if (i == REG_TIMEOUT)
510                 return -ETIMEDOUT;
511
512         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
513             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
514                 set_register(pegasus, Gpio0, 0x24);
515                 set_register(pegasus, Gpio0, 0x26);
516         }
517         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
518                 __u16 auxmode;
519                 read_mii_word(pegasus, 3, 0x1b, &auxmode);
520                 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
521         }
522
523         return 0;
524 }
525
526 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
527 {
528         __u16 linkpart;
529         __u8 data[4];
530         pegasus_t *pegasus = netdev_priv(dev);
531         int ret;
532
533         read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
534         data[0] = 0xc9;
535         data[1] = 0;
536         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
537                 data[1] |= 0x20;        /* set full duplex */
538         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
539                 data[1] |= 0x10;        /* set 100 Mbps */
540         if (mii_mode)
541                 data[1] = 0;
542         data[2] = (loopback & 1) ? 0x09 : 0x01;
543
544         memcpy(pegasus->eth_regs, data, sizeof (data));
545         ret = set_registers(pegasus, EthCtrl0, 3, data);
546
547         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
548             usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
549             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
550                 u16 auxmode;
551                 read_mii_word(pegasus, 0, 0x1b, &auxmode);
552                 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
553         }
554
555         return ret;
556 }
557
558 static void fill_skb_pool(pegasus_t * pegasus)
559 {
560         int i;
561
562         for (i = 0; i < RX_SKBS; i++) {
563                 if (pegasus->rx_pool[i])
564                         continue;
565                 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
566                 /*
567                  ** we give up if the allocation fail. the tasklet will be
568                  ** rescheduled again anyway...
569                  */
570                 if (pegasus->rx_pool[i] == NULL)
571                         return;
572                 pegasus->rx_pool[i]->dev = pegasus->net;
573                 skb_reserve(pegasus->rx_pool[i], 2);
574         }
575 }
576
577 static void free_skb_pool(pegasus_t * pegasus)
578 {
579         int i;
580
581         for (i = 0; i < RX_SKBS; i++) {
582                 if (pegasus->rx_pool[i]) {
583                         dev_kfree_skb(pegasus->rx_pool[i]);
584                         pegasus->rx_pool[i] = NULL;
585                 }
586         }
587 }
588
589 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
590 {
591         int i;
592         struct sk_buff *skb;
593
594         for (i = 0; i < RX_SKBS; i++) {
595                 if (likely(pegasus->rx_pool[i] != NULL)) {
596                         skb = pegasus->rx_pool[i];
597                         pegasus->rx_pool[i] = NULL;
598                         return skb;
599                 }
600         }
601         return NULL;
602 }
603
604 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
605 {
606         pegasus_t *pegasus = urb->context;
607         struct net_device *net;
608         int rx_status, count = urb->actual_length;
609         u8 *buf = urb->transfer_buffer;
610         __u16 pkt_len;
611
612         if (!pegasus)
613                 return;
614
615         net = pegasus->net;
616         if (!netif_device_present(net) || !netif_running(net))
617                 return;
618
619         switch (urb->status) {
620         case 0:
621                 break;
622         case -ETIMEDOUT:
623                 if (netif_msg_rx_err(pegasus))
624                         pr_debug("%s: reset MAC\n", net->name);
625                 pegasus->flags &= ~PEGASUS_RX_BUSY;
626                 break;
627         case -EPIPE:            /* stall, or disconnect from TT */
628                 /* FIXME schedule work to clear the halt */
629                 if (netif_msg_rx_err(pegasus))
630                         printk(KERN_WARNING "%s: no rx stall recovery\n",
631                                         net->name);
632                 return;
633         case -ENOENT:
634         case -ECONNRESET:
635         case -ESHUTDOWN:
636                 if (netif_msg_ifdown(pegasus))
637                         pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
638                 return;
639         default:
640                 if (netif_msg_rx_err(pegasus))
641                         pr_debug("%s: RX status %d\n", net->name, urb->status);
642                 goto goon;
643         }
644
645         if (!count || count < 4)
646                 goto goon;
647
648         rx_status = buf[count - 2];
649         if (rx_status & 0x1e) {
650                 if (netif_msg_rx_err(pegasus))
651                         pr_debug("%s: RX packet error %x\n",
652                                         net->name, rx_status);
653                 pegasus->stats.rx_errors++;
654                 if (rx_status & 0x06)   // long or runt
655                         pegasus->stats.rx_length_errors++;
656                 if (rx_status & 0x08)
657                         pegasus->stats.rx_crc_errors++;
658                 if (rx_status & 0x10)   // extra bits
659                         pegasus->stats.rx_frame_errors++;
660                 goto goon;
661         }
662         if (pegasus->chip == 0x8513) {
663                 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
664                 pkt_len &= 0x0fff;
665                 pegasus->rx_skb->data += 2;
666         } else {
667                 pkt_len = buf[count - 3] << 8;
668                 pkt_len += buf[count - 4];
669                 pkt_len &= 0xfff;
670                 pkt_len -= 8;
671         }
672
673         /*
674          * If the packet is unreasonably long, quietly drop it rather than
675          * kernel panicing by calling skb_put.
676          */
677         if (pkt_len > PEGASUS_MTU)
678                 goto goon;
679
680         /*
681          * at this point we are sure pegasus->rx_skb != NULL
682          * so we go ahead and pass up the packet.
683          */
684         skb_put(pegasus->rx_skb, pkt_len);
685         pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
686         netif_rx(pegasus->rx_skb);
687         pegasus->stats.rx_packets++;
688         pegasus->stats.rx_bytes += pkt_len;
689
690         if (pegasus->flags & PEGASUS_UNPLUG)
691                 return;
692
693         spin_lock(&pegasus->rx_pool_lock);
694         pegasus->rx_skb = pull_skb(pegasus);
695         spin_unlock(&pegasus->rx_pool_lock);
696
697         if (pegasus->rx_skb == NULL)
698                 goto tl_sched;
699 goon:
700         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
701                           usb_rcvbulkpipe(pegasus->usb, 1),
702                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
703                           read_bulk_callback, pegasus);
704         rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
705         if (rx_status == -ENODEV)
706                 netif_device_detach(pegasus->net);
707         else if (rx_status) {
708                 pegasus->flags |= PEGASUS_RX_URB_FAIL;
709                 goto tl_sched;
710         } else {
711                 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
712         }
713
714         return;
715
716 tl_sched:
717         tasklet_schedule(&pegasus->rx_tl);
718 }
719
720 static void rx_fixup(unsigned long data)
721 {
722         pegasus_t *pegasus;
723         unsigned long flags;
724         int status;
725
726         pegasus = (pegasus_t *) data;
727         if (pegasus->flags & PEGASUS_UNPLUG)
728                 return;
729
730         spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
731         fill_skb_pool(pegasus);
732         if (pegasus->flags & PEGASUS_RX_URB_FAIL)
733                 if (pegasus->rx_skb)
734                         goto try_again;
735         if (pegasus->rx_skb == NULL) {
736                 pegasus->rx_skb = pull_skb(pegasus);
737         }
738         if (pegasus->rx_skb == NULL) {
739                 if (netif_msg_rx_err(pegasus))
740                         printk(KERN_WARNING "%s: low on memory\n",
741                                         pegasus->net->name);
742                 tasklet_schedule(&pegasus->rx_tl);
743                 goto done;
744         }
745         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
746                           usb_rcvbulkpipe(pegasus->usb, 1),
747                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
748                           read_bulk_callback, pegasus);
749 try_again:
750         status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
751         if (status == -ENODEV)
752                 netif_device_detach(pegasus->net);
753         else if (status) {
754                 pegasus->flags |= PEGASUS_RX_URB_FAIL;
755                 tasklet_schedule(&pegasus->rx_tl);
756         } else {
757                 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
758         }
759 done:
760         spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
761 }
762
763 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
764 {
765         pegasus_t *pegasus = urb->context;
766         struct net_device *net = pegasus->net;
767
768         if (!pegasus)
769                 return;
770
771         if (!netif_device_present(net) || !netif_running(net))
772                 return;
773
774         switch (urb->status) {
775         case -EPIPE:
776                 /* FIXME schedule_work() to clear the tx halt */
777                 netif_stop_queue(net);
778                 if (netif_msg_tx_err(pegasus))
779                         printk(KERN_WARNING "%s: no tx stall recovery\n",
780                                         net->name);
781                 return;
782         case -ENOENT:
783         case -ECONNRESET:
784         case -ESHUTDOWN:
785                 if (netif_msg_ifdown(pegasus))
786                         pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
787                 return;
788         default:
789                 if (netif_msg_tx_err(pegasus))
790                         pr_info("%s: TX status %d\n", net->name, urb->status);
791                 /* FALL THROUGH */
792         case 0:
793                 break;
794         }
795
796         net->trans_start = jiffies;
797         netif_wake_queue(net);
798 }
799
800 static void intr_callback(struct urb *urb, struct pt_regs *regs)
801 {
802         pegasus_t *pegasus = urb->context;
803         struct net_device *net;
804         int status;
805
806         if (!pegasus)
807                 return;
808         net = pegasus->net;
809
810         switch (urb->status) {
811         case 0:
812                 break;
813         case -ECONNRESET:       /* unlink */
814         case -ENOENT:
815         case -ESHUTDOWN:
816                 return;
817         default:
818                 /* some Pegasus-I products report LOTS of data
819                  * toggle errors... avoid log spamming
820                  */
821                 if (netif_msg_timer(pegasus))
822                         pr_debug("%s: intr status %d\n", net->name,
823                                         urb->status);
824         }
825
826         if (urb->actual_length >= 6) {
827                 u8      * d = urb->transfer_buffer;
828
829                 /* byte 0 == tx_status1, reg 2B */
830                 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
831                                         |LATE_COL|JABBER_TIMEOUT)) {
832                         pegasus->stats.tx_errors++;
833                         if (d[0] & TX_UNDERRUN)
834                                 pegasus->stats.tx_fifo_errors++;
835                         if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
836                                 pegasus->stats.tx_aborted_errors++;
837                         if (d[0] & LATE_COL)
838                                 pegasus->stats.tx_window_errors++;
839                 }
840
841                 /* d[5].LINK_STATUS lies on some adapters.
842                  * d[0].NO_CARRIER kicks in only with failed TX.
843                  * ... so monitoring with MII may be safest.
844                  */
845                 if (d[0] & NO_CARRIER)
846                         netif_carrier_off(net); 
847                 else
848                         netif_carrier_on(net);
849
850                 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
851                 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
852         }
853
854         status = usb_submit_urb(urb, SLAB_ATOMIC);
855         if (status == -ENODEV)
856                 netif_device_detach(pegasus->net);
857         if (status && netif_msg_timer(pegasus))
858                 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
859                                 net->name, status);
860 }
861
862 static void pegasus_tx_timeout(struct net_device *net)
863 {
864         pegasus_t *pegasus = netdev_priv(net);
865         if (netif_msg_timer(pegasus))
866                 printk(KERN_WARNING "%s: tx timeout\n", net->name);
867         usb_unlink_urb(pegasus->tx_urb);
868         pegasus->stats.tx_errors++;
869 }
870
871 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
872 {
873         pegasus_t *pegasus = netdev_priv(net);
874         int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
875         int res;
876         __u16 l16 = skb->len;
877
878         netif_stop_queue(net);
879
880         ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
881         memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
882         usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
883                           usb_sndbulkpipe(pegasus->usb, 2),
884                           pegasus->tx_buff, count,
885                           write_bulk_callback, pegasus);
886         if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
887                 if (netif_msg_tx_err(pegasus))
888                         printk(KERN_WARNING "%s: fail tx, %d\n",
889                                         net->name, res);
890                 switch (res) {
891                 case -EPIPE:            /* stall, or disconnect from TT */
892                         /* cleanup should already have been scheduled */
893                         break;
894                 case -ENODEV:           /* disconnect() upcoming */
895                         netif_device_detach(pegasus->net);
896                         break;
897                 default:
898                         pegasus->stats.tx_errors++;
899                         netif_start_queue(net);
900                 }
901         } else {
902                 pegasus->stats.tx_packets++;
903                 pegasus->stats.tx_bytes += skb->len;
904                 net->trans_start = jiffies;
905         }
906         dev_kfree_skb(skb);
907
908         return 0;
909 }
910
911 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
912 {
913         return &((pegasus_t *) netdev_priv(dev))->stats;
914 }
915
916 static inline void disable_net_traffic(pegasus_t * pegasus)
917 {
918         int tmp = 0;
919
920         set_registers(pegasus, EthCtrl0, 2, &tmp);
921 }
922
923 static inline void get_interrupt_interval(pegasus_t * pegasus)
924 {
925         __u8 data[2];
926
927         read_eprom_word(pegasus, 4, (__u16 *) data);
928         if (pegasus->usb->speed != USB_SPEED_HIGH) {
929                 if (data[1] < 0x80) {
930                         if (netif_msg_timer(pegasus))
931                                 dev_info(&pegasus->intf->dev, "intr interval "
932                                         "changed from %ums to %ums\n",
933                                         data[1], 0x80);
934                         data[1] = 0x80;
935 #ifdef PEGASUS_WRITE_EEPROM
936                         write_eprom_word(pegasus, 4, *(__u16 *) data);
937 #endif
938                 }
939         }
940         pegasus->intr_interval = data[1];
941 }
942
943 static void set_carrier(struct net_device *net)
944 {
945         pegasus_t *pegasus = netdev_priv(net);
946         u16 tmp;
947
948         if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
949                 return;
950
951         if (tmp & BMSR_LSTATUS)
952                 netif_carrier_on(net);
953         else
954                 netif_carrier_off(net);
955 }
956
957 static void free_all_urbs(pegasus_t * pegasus)
958 {
959         usb_free_urb(pegasus->intr_urb);
960         usb_free_urb(pegasus->tx_urb);
961         usb_free_urb(pegasus->rx_urb);
962         usb_free_urb(pegasus->ctrl_urb);
963 }
964
965 static void unlink_all_urbs(pegasus_t * pegasus)
966 {
967         usb_kill_urb(pegasus->intr_urb);
968         usb_kill_urb(pegasus->tx_urb);
969         usb_kill_urb(pegasus->rx_urb);
970         usb_kill_urb(pegasus->ctrl_urb);
971 }
972
973 static int alloc_urbs(pegasus_t * pegasus)
974 {
975         pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
976         if (!pegasus->ctrl_urb) {
977                 return 0;
978         }
979         pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
980         if (!pegasus->rx_urb) {
981                 usb_free_urb(pegasus->ctrl_urb);
982                 return 0;
983         }
984         pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
985         if (!pegasus->tx_urb) {
986                 usb_free_urb(pegasus->rx_urb);
987                 usb_free_urb(pegasus->ctrl_urb);
988                 return 0;
989         }
990         pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
991         if (!pegasus->intr_urb) {
992                 usb_free_urb(pegasus->tx_urb);
993                 usb_free_urb(pegasus->rx_urb);
994                 usb_free_urb(pegasus->ctrl_urb);
995                 return 0;
996         }
997
998         return 1;
999 }
1000
1001 static int pegasus_open(struct net_device *net)
1002 {
1003         pegasus_t *pegasus = netdev_priv(net);
1004         int res;
1005
1006         if (pegasus->rx_skb == NULL)
1007                 pegasus->rx_skb = pull_skb(pegasus);
1008         /*
1009          ** Note: no point to free the pool.  it is empty :-)
1010          */
1011         if (!pegasus->rx_skb)
1012                 return -ENOMEM;
1013
1014         res = set_registers(pegasus, EthID, 6, net->dev_addr);
1015         
1016         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1017                           usb_rcvbulkpipe(pegasus->usb, 1),
1018                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
1019                           read_bulk_callback, pegasus);
1020         if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1021                 if (res == -ENODEV)
1022                         netif_device_detach(pegasus->net);
1023                 if (netif_msg_ifup(pegasus))
1024                         pr_debug("%s: failed rx_urb, %d", net->name, res);
1025                 goto exit;
1026         }
1027
1028         usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1029                          usb_rcvintpipe(pegasus->usb, 3),
1030                          pegasus->intr_buff, sizeof (pegasus->intr_buff),
1031                          intr_callback, pegasus, pegasus->intr_interval);
1032         if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1033                 if (res == -ENODEV)
1034                         netif_device_detach(pegasus->net);
1035                 if (netif_msg_ifup(pegasus))
1036                         pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1037                 usb_kill_urb(pegasus->rx_urb);
1038                 goto exit;
1039         }
1040         if ((res = enable_net_traffic(net, pegasus->usb))) {
1041                 if (netif_msg_ifup(pegasus))
1042                         pr_debug("%s: can't enable_net_traffic() - %d\n",
1043                                         net->name, res);
1044                 res = -EIO;
1045                 usb_kill_urb(pegasus->rx_urb);
1046                 usb_kill_urb(pegasus->intr_urb);
1047                 free_skb_pool(pegasus);
1048                 goto exit;
1049         }
1050         set_carrier(net);
1051         netif_start_queue(net);
1052         if (netif_msg_ifup(pegasus))
1053                 pr_debug("%s: open\n", net->name);
1054         res = 0;
1055 exit:
1056         return res;
1057 }
1058
1059 static int pegasus_close(struct net_device *net)
1060 {
1061         pegasus_t *pegasus = netdev_priv(net);
1062
1063         netif_stop_queue(net);
1064         if (!(pegasus->flags & PEGASUS_UNPLUG))
1065                 disable_net_traffic(pegasus);
1066         tasklet_kill(&pegasus->rx_tl);
1067         unlink_all_urbs(pegasus);
1068
1069         return 0;
1070 }
1071
1072 static void pegasus_get_drvinfo(struct net_device *dev,
1073                                 struct ethtool_drvinfo *info)
1074 {
1075         pegasus_t *pegasus = netdev_priv(dev);
1076         strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1077         strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1078         usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1079 }
1080
1081 /* also handles three patterns of some kind in hardware */
1082 #define WOL_SUPPORTED   (WAKE_MAGIC|WAKE_PHY)
1083
1084 static void
1085 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1086 {
1087         pegasus_t       *pegasus = netdev_priv(dev);
1088
1089         wol->supported = WAKE_MAGIC | WAKE_PHY;
1090         wol->wolopts = pegasus->wolopts;
1091 }
1092
1093 static int
1094 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1095 {
1096         pegasus_t       *pegasus = netdev_priv(dev);
1097         u8              reg78 = 0x04;
1098         
1099         if (wol->wolopts & ~WOL_SUPPORTED)
1100                 return -EINVAL;
1101
1102         if (wol->wolopts & WAKE_MAGIC)
1103                 reg78 |= 0x80;
1104         if (wol->wolopts & WAKE_PHY)
1105                 reg78 |= 0x40;
1106         /* FIXME this 0x10 bit still needs to get set in the chip... */
1107         if (wol->wolopts)
1108                 pegasus->eth_regs[0] |= 0x10;
1109         else
1110                 pegasus->eth_regs[0] &= ~0x10;
1111         pegasus->wolopts = wol->wolopts;
1112         return set_register(pegasus, WakeupControl, reg78);
1113 }
1114
1115 static inline void pegasus_reset_wol(struct net_device *dev)
1116 {
1117         struct ethtool_wolinfo wol;
1118         
1119         memset(&wol, 0, sizeof wol);
1120         (void) pegasus_set_wol(dev, &wol);
1121 }
1122
1123 static int
1124 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1125 {
1126         pegasus_t *pegasus;
1127
1128         if (in_atomic())
1129                 return 0;
1130
1131         pegasus = netdev_priv(dev);
1132         mii_ethtool_gset(&pegasus->mii, ecmd);
1133
1134         return 0;
1135 }
1136
1137 static int
1138 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1139 {
1140         pegasus_t *pegasus = netdev_priv(dev);
1141         return mii_ethtool_sset(&pegasus->mii, ecmd);
1142 }
1143
1144 static int pegasus_nway_reset(struct net_device *dev)
1145 {
1146         pegasus_t *pegasus = netdev_priv(dev);
1147         return mii_nway_restart(&pegasus->mii);
1148 }
1149
1150 static u32 pegasus_get_link(struct net_device *dev)
1151 {
1152         pegasus_t *pegasus = netdev_priv(dev);
1153         return mii_link_ok(&pegasus->mii);
1154 }
1155
1156 static u32 pegasus_get_msglevel(struct net_device *dev)
1157 {
1158         pegasus_t *pegasus = netdev_priv(dev);
1159         return pegasus->msg_enable;
1160 }
1161
1162 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1163 {
1164         pegasus_t *pegasus = netdev_priv(dev);
1165         pegasus->msg_enable = v;
1166 }
1167
1168 static struct ethtool_ops ops = {
1169         .get_drvinfo = pegasus_get_drvinfo,
1170         .get_settings = pegasus_get_settings,
1171         .set_settings = pegasus_set_settings,
1172         .nway_reset = pegasus_nway_reset,
1173         .get_link = pegasus_get_link,
1174         .get_msglevel = pegasus_get_msglevel,
1175         .set_msglevel = pegasus_set_msglevel,
1176         .get_wol = pegasus_get_wol,
1177         .set_wol = pegasus_set_wol,
1178 };
1179
1180 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1181 {
1182         __u16 *data = (__u16 *) & rq->ifr_ifru;
1183         pegasus_t *pegasus = netdev_priv(net);
1184         int res;
1185
1186         switch (cmd) {
1187         case SIOCDEVPRIVATE:
1188                 data[0] = pegasus->phy;
1189         case SIOCDEVPRIVATE + 1:
1190                 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1191                 res = 0;
1192                 break;
1193         case SIOCDEVPRIVATE + 2:
1194                 if (!capable(CAP_NET_ADMIN))
1195                         return -EPERM;
1196                 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1197                 res = 0;
1198                 break;
1199         default:
1200                 res = -EOPNOTSUPP;
1201         }
1202         return res;
1203 }
1204
1205 static void pegasus_set_multicast(struct net_device *net)
1206 {
1207         pegasus_t *pegasus = netdev_priv(net);
1208
1209         if (net->flags & IFF_PROMISC) {
1210                 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1211                 if (netif_msg_link(pegasus))
1212                         pr_info("%s: Promiscuous mode enabled.\n", net->name);
1213         } else if (net->mc_count ||
1214                    (net->flags & IFF_ALLMULTI)) {
1215                 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1216                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1217                 if (netif_msg_link(pegasus))
1218                         pr_info("%s: set allmulti\n", net->name);
1219         } else {
1220                 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1221                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1222         }
1223
1224         pegasus->flags |= ETH_REGS_CHANGE;
1225         ctrl_callback(pegasus->ctrl_urb, NULL);
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(void *data)
1280 {
1281         pegasus_t *pegasus = data;
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_probe(struct usb_interface *intf,
1290                          const struct usb_device_id *id)
1291 {
1292         struct usb_device *dev = interface_to_usbdev(intf);
1293         struct net_device *net;
1294         pegasus_t *pegasus;
1295         int dev_index = id - pegasus_ids;
1296         int res = -ENOMEM;
1297
1298         usb_get_dev(dev);
1299         net = alloc_etherdev(sizeof(struct pegasus));
1300         if (!net) {
1301                 dev_err(&intf->dev, "can't allocate %s\n", "device");
1302                 goto out;
1303         }
1304
1305         pegasus = netdev_priv(net);
1306         memset(pegasus, 0, sizeof (struct pegasus));
1307         pegasus->dev_index = dev_index;
1308         init_waitqueue_head(&pegasus->ctrl_wait);
1309
1310         if (!alloc_urbs(pegasus)) {
1311                 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1312                 goto out1;
1313         }
1314
1315         tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1316
1317         INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1318
1319         pegasus->intf = intf;
1320         pegasus->usb = dev;
1321         pegasus->net = net;
1322         SET_MODULE_OWNER(net);
1323         net->open = pegasus_open;
1324         net->stop = pegasus_close;
1325         net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1326         net->tx_timeout = pegasus_tx_timeout;
1327         net->do_ioctl = pegasus_ioctl;
1328         net->hard_start_xmit = pegasus_start_xmit;
1329         net->set_multicast_list = pegasus_set_multicast;
1330         net->get_stats = pegasus_netdev_stats;
1331         SET_ETHTOOL_OPS(net, &ops);
1332         pegasus->mii.dev = net;
1333         pegasus->mii.mdio_read = mdio_read;
1334         pegasus->mii.mdio_write = mdio_write;
1335         pegasus->mii.phy_id_mask = 0x1f;
1336         pegasus->mii.reg_num_mask = 0x1f;
1337         spin_lock_init(&pegasus->rx_pool_lock);
1338         pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1339                                 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1340
1341         pegasus->features = usb_dev_id[dev_index].private;
1342         get_interrupt_interval(pegasus);
1343         if (reset_mac(pegasus)) {
1344                 dev_err(&intf->dev, "can't reset MAC\n");
1345                 res = -EIO;
1346                 goto out2;
1347         }
1348         set_ethernet_addr(pegasus);
1349         fill_skb_pool(pegasus);
1350         if (pegasus->features & PEGASUS_II) {
1351                 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1352                 setup_pegasus_II(pegasus);
1353         }
1354         pegasus->phy = mii_phy_probe(pegasus);
1355         if (pegasus->phy == 0xff) {
1356                 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1357                 pegasus->phy = 1;
1358         }
1359         pegasus->mii.phy_id = pegasus->phy;
1360         usb_set_intfdata(intf, pegasus);
1361         SET_NETDEV_DEV(net, &intf->dev);
1362         pegasus_reset_wol(net);
1363         res = register_netdev(net);
1364         if (res)
1365                 goto out3;
1366         queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1367                                 CARRIER_CHECK_DELAY);
1368
1369         dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1370                 net->name,
1371                 usb_dev_id[dev_index].name,
1372                 net->dev_addr [0], net->dev_addr [1],
1373                 net->dev_addr [2], net->dev_addr [3],
1374                 net->dev_addr [4], net->dev_addr [5]);
1375         return 0;
1376
1377 out3:
1378         usb_set_intfdata(intf, NULL);
1379         free_skb_pool(pegasus);
1380 out2:
1381         free_all_urbs(pegasus);
1382 out1:
1383         free_netdev(net);
1384 out:
1385         usb_put_dev(dev);
1386         return res;
1387 }
1388
1389 static void pegasus_disconnect(struct usb_interface *intf)
1390 {
1391         struct pegasus *pegasus = usb_get_intfdata(intf);
1392
1393         usb_set_intfdata(intf, NULL);
1394         if (!pegasus) {
1395                 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1396                 return;
1397         }
1398
1399         pegasus->flags |= PEGASUS_UNPLUG;
1400         cancel_delayed_work(&pegasus->carrier_check);
1401         unregister_netdev(pegasus->net);
1402         usb_put_dev(interface_to_usbdev(intf));
1403         unlink_all_urbs(pegasus);
1404         free_all_urbs(pegasus);
1405         free_skb_pool(pegasus);
1406         if (pegasus->rx_skb)
1407                 dev_kfree_skb(pegasus->rx_skb);
1408         free_netdev(pegasus->net);
1409 }
1410
1411 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1412 {
1413         struct pegasus *pegasus = usb_get_intfdata(intf);
1414         
1415         netif_device_detach (pegasus->net);
1416         cancel_delayed_work(&pegasus->carrier_check);
1417         if (netif_running(pegasus->net)) {
1418                 usb_kill_urb(pegasus->rx_urb);
1419                 usb_kill_urb(pegasus->intr_urb);
1420         }
1421         return 0;
1422 }
1423
1424 static int pegasus_resume (struct usb_interface *intf)
1425 {
1426         struct pegasus *pegasus = usb_get_intfdata(intf);
1427
1428         netif_device_attach (pegasus->net);
1429         if (netif_running(pegasus->net)) {
1430                 pegasus->rx_urb->status = 0;
1431                 pegasus->rx_urb->actual_length = 0;
1432                 read_bulk_callback(pegasus->rx_urb, NULL);
1433
1434                 pegasus->intr_urb->status = 0;
1435                 pegasus->intr_urb->actual_length = 0;
1436                 intr_callback(pegasus->intr_urb, NULL);
1437         }
1438         queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1439                                 CARRIER_CHECK_DELAY);
1440         return 0;
1441 }
1442
1443 static struct usb_driver pegasus_driver = {
1444         .name = driver_name,
1445         .probe = pegasus_probe,
1446         .disconnect = pegasus_disconnect,
1447         .id_table = pegasus_ids,
1448         .suspend = pegasus_suspend,
1449         .resume = pegasus_resume,
1450 };
1451
1452 static void parse_id(char *id)
1453 {
1454         unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1455         char *token, *name=NULL;
1456
1457         if ((token = strsep(&id, ":")) != NULL)
1458                 name = token;
1459         /* name now points to a null terminated string*/
1460         if ((token = strsep(&id, ":")) != NULL)
1461                 vendor_id = simple_strtoul(token, NULL, 16);
1462         if ((token = strsep(&id, ":")) != NULL)
1463                 device_id = simple_strtoul(token, NULL, 16);
1464         flags = simple_strtoul(id, NULL, 16);
1465         pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1466                 driver_name, name, vendor_id, device_id, flags);
1467
1468         if (vendor_id > 0x10000 || vendor_id == 0)
1469                 return;
1470         if (device_id > 0x10000 || device_id == 0)
1471                 return;
1472
1473         for (i=0; usb_dev_id[i].name; i++);
1474         usb_dev_id[i].name = name;
1475         usb_dev_id[i].vendor = vendor_id;
1476         usb_dev_id[i].device = device_id;
1477         usb_dev_id[i].private = flags;
1478         pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1479         pegasus_ids[i].idVendor = vendor_id;
1480         pegasus_ids[i].idProduct = device_id;
1481 }
1482
1483 static int __init pegasus_init(void)
1484 {
1485         pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1486         if (devid)
1487                 parse_id(devid);
1488         pegasus_workqueue = create_singlethread_workqueue("pegasus");
1489         if (!pegasus_workqueue)
1490                 return -ENOMEM;
1491         return usb_register(&pegasus_driver);
1492 }
1493
1494 static void __exit pegasus_exit(void)
1495 {
1496         destroy_workqueue(pegasus_workqueue);
1497         usb_deregister(&pegasus_driver);
1498 }
1499
1500 module_init(pegasus_init);
1501 module_exit(pegasus_exit);