[PATCH] md: Fix device-size updates in md
[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 (netif_msg_drv(pegasus))
167                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
168                                         __FUNCTION__, ret);
169                 goto out;
170         }
171
172         schedule();
173 out:
174         remove_wait_queue(&pegasus->ctrl_wait, &wait);
175         memcpy(data, buffer, size);
176         kfree(buffer);
177
178         return ret;
179 }
180
181 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
182                          void *data)
183 {
184         int ret;
185         char *buffer;
186         DECLARE_WAITQUEUE(wait, current);
187
188         buffer = kmalloc(size, GFP_KERNEL);
189         if (!buffer) {
190                 if (netif_msg_drv(pegasus))
191                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
192                                         __FUNCTION__);
193                 return -ENOMEM;
194         }
195         memcpy(buffer, data, size);
196
197         add_wait_queue(&pegasus->ctrl_wait, &wait);
198         set_current_state(TASK_UNINTERRUPTIBLE);
199         while (pegasus->flags & ETH_REGS_CHANGED)
200                 schedule();
201         remove_wait_queue(&pegasus->ctrl_wait, &wait);
202         set_current_state(TASK_RUNNING);
203
204         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
205         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
206         pegasus->dr.wValue = cpu_to_le16(0);
207         pegasus->dr.wIndex = cpu_to_le16p(&indx);
208         pegasus->dr.wLength = cpu_to_le16p(&size);
209         pegasus->ctrl_urb->transfer_buffer_length = size;
210
211         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
212                              usb_sndctrlpipe(pegasus->usb, 0),
213                              (char *) &pegasus->dr,
214                              buffer, size, ctrl_callback, pegasus);
215
216         add_wait_queue(&pegasus->ctrl_wait, &wait);
217         set_current_state(TASK_UNINTERRUPTIBLE);
218
219         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
220                 if (netif_msg_drv(pegasus))
221                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
222                                         __FUNCTION__, ret);
223                 goto out;
224         }
225
226         schedule();
227 out:
228         remove_wait_queue(&pegasus->ctrl_wait, &wait);
229         kfree(buffer);
230
231         return ret;
232 }
233
234 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
235 {
236         int ret;
237         char *tmp;
238         DECLARE_WAITQUEUE(wait, current);
239
240         tmp = kmalloc(1, GFP_KERNEL);
241         if (!tmp) {
242                 if (netif_msg_drv(pegasus))
243                         dev_warn(&pegasus->intf->dev, "out of memory in %s\n",
244                                         __FUNCTION__);
245                 return -ENOMEM;
246         }
247         memcpy(tmp, &data, 1);
248         add_wait_queue(&pegasus->ctrl_wait, &wait);
249         set_current_state(TASK_UNINTERRUPTIBLE);
250         while (pegasus->flags & ETH_REGS_CHANGED)
251                 schedule();
252         remove_wait_queue(&pegasus->ctrl_wait, &wait);
253         set_current_state(TASK_RUNNING);
254
255         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
256         pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
257         pegasus->dr.wValue = cpu_to_le16(data);
258         pegasus->dr.wIndex = cpu_to_le16p(&indx);
259         pegasus->dr.wLength = cpu_to_le16(1);
260         pegasus->ctrl_urb->transfer_buffer_length = 1;
261
262         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
263                              usb_sndctrlpipe(pegasus->usb, 0),
264                              (char *) &pegasus->dr,
265                              &tmp, 1, ctrl_callback, pegasus);
266
267         add_wait_queue(&pegasus->ctrl_wait, &wait);
268         set_current_state(TASK_UNINTERRUPTIBLE);
269
270         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
271                 if (netif_msg_drv(pegasus))
272                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
273                                         __FUNCTION__, ret);
274                 goto out;
275         }
276
277         schedule();
278 out:
279         remove_wait_queue(&pegasus->ctrl_wait, &wait);
280         kfree(tmp);
281
282         return ret;
283 }
284
285 static int update_eth_regs_async(pegasus_t * pegasus)
286 {
287         int ret;
288
289         pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
290         pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
291         pegasus->dr.wValue = 0;
292         pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
293         pegasus->dr.wLength = cpu_to_le16(3);
294         pegasus->ctrl_urb->transfer_buffer_length = 3;
295
296         usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
297                              usb_sndctrlpipe(pegasus->usb, 0),
298                              (char *) &pegasus->dr,
299                              pegasus->eth_regs, 3, ctrl_callback, pegasus);
300
301         if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC)))
302                 if (netif_msg_drv(pegasus))
303                         dev_err(&pegasus->intf->dev, "%s, status %d\n",
304                                         __FUNCTION__, ret);
305
306         return ret;
307 }
308
309 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
310 {
311         int i;
312         __u8 data[4] = { phy, 0, 0, indx };
313         __le16 regdi;
314         int ret;
315
316         set_register(pegasus, PhyCtrl, 0);
317         set_registers(pegasus, PhyAddr, sizeof (data), data);
318         set_register(pegasus, PhyCtrl, (indx | PHY_READ));
319         for (i = 0; i < REG_TIMEOUT; i++) {
320                 ret = get_registers(pegasus, PhyCtrl, 1, data);
321                 if (data[0] & PHY_DONE)
322                         break;
323         }
324         if (i < REG_TIMEOUT) {
325                 ret = get_registers(pegasus, PhyData, 2, &regdi);
326                 *regd = le16_to_cpu(regdi);
327                 return ret;
328         }
329         if (netif_msg_drv(pegasus))
330                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
331
332         return ret;
333 }
334
335 static int mdio_read(struct net_device *dev, int phy_id, int loc)
336 {
337         pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
338         u16 res;
339
340         read_mii_word(pegasus, phy_id, loc, &res);
341         return (int)res;
342 }
343
344 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
345 {
346         int i;
347         __u8 data[4] = { phy, 0, 0, indx };
348         int ret;
349
350         data[1] = (u8) regd;
351         data[2] = (u8) (regd >> 8);
352         set_register(pegasus, PhyCtrl, 0);
353         set_registers(pegasus, PhyAddr, sizeof(data), data);
354         set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
355         for (i = 0; i < REG_TIMEOUT; i++) {
356                 ret = get_registers(pegasus, PhyCtrl, 1, data);
357                 if (data[0] & PHY_DONE)
358                         break;
359         }
360         if (i < REG_TIMEOUT)
361                 return ret;
362
363         if (netif_msg_drv(pegasus))
364                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
365         return -ETIMEDOUT;
366 }
367
368 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
369 {
370         pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
371
372         write_mii_word(pegasus, phy_id, loc, val);
373 }
374
375 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
376 {
377         int i;
378         __u8 tmp;
379         __le16 retdatai;
380         int ret;
381
382         set_register(pegasus, EpromCtrl, 0);
383         set_register(pegasus, EpromOffset, index);
384         set_register(pegasus, EpromCtrl, EPROM_READ);
385
386         for (i = 0; i < REG_TIMEOUT; i++) {
387                 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
388                 if (tmp & EPROM_DONE)
389                         break;
390         }
391         if (i < REG_TIMEOUT) {
392                 ret = get_registers(pegasus, EpromData, 2, &retdatai);
393                 *retdata = le16_to_cpu(retdatai);
394                 return ret;
395         }
396
397         if (netif_msg_drv(pegasus))
398                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
399         return -ETIMEDOUT;
400 }
401
402 #ifdef  PEGASUS_WRITE_EEPROM
403 static inline void enable_eprom_write(pegasus_t * pegasus)
404 {
405         __u8 tmp;
406         int ret;
407
408         get_registers(pegasus, EthCtrl2, 1, &tmp);
409         set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
410 }
411
412 static inline void disable_eprom_write(pegasus_t * pegasus)
413 {
414         __u8 tmp;
415         int ret;
416
417         get_registers(pegasus, EthCtrl2, 1, &tmp);
418         set_register(pegasus, EpromCtrl, 0);
419         set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
420 }
421
422 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
423 {
424         int i;
425         __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
426         int ret;
427
428         set_registers(pegasus, EpromOffset, 4, d);
429         enable_eprom_write(pegasus);
430         set_register(pegasus, EpromOffset, index);
431         set_registers(pegasus, EpromData, 2, &data);
432         set_register(pegasus, EpromCtrl, EPROM_WRITE);
433
434         for (i = 0; i < REG_TIMEOUT; i++) {
435                 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
436                 if (tmp & EPROM_DONE)
437                         break;
438         }
439         disable_eprom_write(pegasus);
440         if (i < REG_TIMEOUT)
441                 return ret;
442         if (netif_msg_drv(pegasus))
443                 dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__);
444         return -ETIMEDOUT;
445 }
446 #endif                          /* PEGASUS_WRITE_EEPROM */
447
448 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
449 {
450         int i;
451         __u16 w16;
452
453         for (i = 0; i < 3; i++) {
454                 read_eprom_word(pegasus, i, &w16);
455                 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
456         }
457 }
458
459 static void set_ethernet_addr(pegasus_t * pegasus)
460 {
461         __u8 node_id[6];
462
463         get_node_id(pegasus, node_id);
464         set_registers(pegasus, EthID, sizeof (node_id), node_id);
465         memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
466 }
467
468 static inline int reset_mac(pegasus_t * pegasus)
469 {
470         __u8 data = 0x8;
471         int i;
472
473         set_register(pegasus, EthCtrl1, data);
474         for (i = 0; i < REG_TIMEOUT; i++) {
475                 get_registers(pegasus, EthCtrl1, 1, &data);
476                 if (~data & 0x08) {
477                         if (loopback & 1)
478                                 break;
479                         if (mii_mode && (pegasus->features & HAS_HOME_PNA))
480                                 set_register(pegasus, Gpio1, 0x34);
481                         else
482                                 set_register(pegasus, Gpio1, 0x26);
483                         set_register(pegasus, Gpio0, pegasus->features);
484                         set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
485                         break;
486                 }
487         }
488         if (i == REG_TIMEOUT)
489                 return -ETIMEDOUT;
490
491         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
492             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
493                 set_register(pegasus, Gpio0, 0x24);
494                 set_register(pegasus, Gpio0, 0x26);
495         }
496         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
497                 __u16 auxmode;
498                 read_mii_word(pegasus, 3, 0x1b, &auxmode);
499                 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
500         }
501
502         return 0;
503 }
504
505 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
506 {
507         __u16 linkpart;
508         __u8 data[4];
509         pegasus_t *pegasus = netdev_priv(dev);
510         int ret;
511
512         read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
513         data[0] = 0xc9;
514         data[1] = 0;
515         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
516                 data[1] |= 0x20;        /* set full duplex */
517         if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
518                 data[1] |= 0x10;        /* set 100 Mbps */
519         if (mii_mode)
520                 data[1] = 0;
521         data[2] = (loopback & 1) ? 0x09 : 0x01;
522
523         memcpy(pegasus->eth_regs, data, sizeof (data));
524         ret = set_registers(pegasus, EthCtrl0, 3, data);
525
526         if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
527             usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
528                 u16 auxmode;
529                 read_mii_word(pegasus, 0, 0x1b, &auxmode);
530                 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
531         }
532
533         return ret;
534 }
535
536 static void fill_skb_pool(pegasus_t * pegasus)
537 {
538         int i;
539
540         for (i = 0; i < RX_SKBS; i++) {
541                 if (pegasus->rx_pool[i])
542                         continue;
543                 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
544                 /*
545                  ** we give up if the allocation fail. the tasklet will be
546                  ** rescheduled again anyway...
547                  */
548                 if (pegasus->rx_pool[i] == NULL)
549                         return;
550                 pegasus->rx_pool[i]->dev = pegasus->net;
551                 skb_reserve(pegasus->rx_pool[i], 2);
552         }
553 }
554
555 static void free_skb_pool(pegasus_t * pegasus)
556 {
557         int i;
558
559         for (i = 0; i < RX_SKBS; i++) {
560                 if (pegasus->rx_pool[i]) {
561                         dev_kfree_skb(pegasus->rx_pool[i]);
562                         pegasus->rx_pool[i] = NULL;
563                 }
564         }
565 }
566
567 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
568 {
569         int i;
570         struct sk_buff *skb;
571
572         for (i = 0; i < RX_SKBS; i++) {
573                 if (likely(pegasus->rx_pool[i] != NULL)) {
574                         skb = pegasus->rx_pool[i];
575                         pegasus->rx_pool[i] = NULL;
576                         return skb;
577                 }
578         }
579         return NULL;
580 }
581
582 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
583 {
584         pegasus_t *pegasus = urb->context;
585         struct net_device *net;
586         int rx_status, count = urb->actual_length;
587         u8 *buf = urb->transfer_buffer;
588         __u16 pkt_len;
589
590         if (!pegasus)
591                 return;
592
593         net = pegasus->net;
594         if (!netif_device_present(net) || !netif_running(net))
595                 return;
596
597         switch (urb->status) {
598         case 0:
599                 break;
600         case -ETIMEDOUT:
601                 if (netif_msg_rx_err(pegasus))
602                         pr_debug("%s: reset MAC\n", net->name);
603                 pegasus->flags &= ~PEGASUS_RX_BUSY;
604                 break;
605         case -EPIPE:            /* stall, or disconnect from TT */
606                 /* FIXME schedule work to clear the halt */
607                 if (netif_msg_rx_err(pegasus))
608                         printk(KERN_WARNING "%s: no rx stall recovery\n",
609                                         net->name);
610                 return;
611         case -ENOENT:
612         case -ECONNRESET:
613         case -ESHUTDOWN:
614                 if (netif_msg_ifdown(pegasus))
615                         pr_debug("%s: rx unlink, %d\n", net->name, urb->status);
616                 return;
617         default:
618                 if (netif_msg_rx_err(pegasus))
619                         pr_debug("%s: RX status %d\n", net->name, urb->status);
620                 goto goon;
621         }
622
623         if (!count || count < 4)
624                 goto goon;
625
626         rx_status = buf[count - 2];
627         if (rx_status & 0x1e) {
628                 if (netif_msg_rx_err(pegasus))
629                         pr_debug("%s: RX packet error %x\n",
630                                         net->name, rx_status);
631                 pegasus->stats.rx_errors++;
632                 if (rx_status & 0x06)   // long or runt
633                         pegasus->stats.rx_length_errors++;
634                 if (rx_status & 0x08)
635                         pegasus->stats.rx_crc_errors++;
636                 if (rx_status & 0x10)   // extra bits
637                         pegasus->stats.rx_frame_errors++;
638                 goto goon;
639         }
640         if (pegasus->chip == 0x8513) {
641                 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
642                 pkt_len &= 0x0fff;
643                 pegasus->rx_skb->data += 2;
644         } else {
645                 pkt_len = buf[count - 3] << 8;
646                 pkt_len += buf[count - 4];
647                 pkt_len &= 0xfff;
648                 pkt_len -= 8;
649         }
650
651         /*
652          * If the packet is unreasonably long, quietly drop it rather than
653          * kernel panicing by calling skb_put.
654          */
655         if (pkt_len > PEGASUS_MTU)
656                 goto goon;
657
658         /*
659          * at this point we are sure pegasus->rx_skb != NULL
660          * so we go ahead and pass up the packet.
661          */
662         skb_put(pegasus->rx_skb, pkt_len);
663         pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
664         netif_rx(pegasus->rx_skb);
665         pegasus->stats.rx_packets++;
666         pegasus->stats.rx_bytes += pkt_len;
667
668         if (pegasus->flags & PEGASUS_UNPLUG)
669                 return;
670
671         spin_lock(&pegasus->rx_pool_lock);
672         pegasus->rx_skb = pull_skb(pegasus);
673         spin_unlock(&pegasus->rx_pool_lock);
674
675         if (pegasus->rx_skb == NULL)
676                 goto tl_sched;
677 goon:
678         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
679                           usb_rcvbulkpipe(pegasus->usb, 1),
680                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
681                           read_bulk_callback, pegasus);
682         if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
683                 pegasus->flags |= PEGASUS_RX_URB_FAIL;
684                 goto tl_sched;
685         } else {
686                 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
687         }
688
689         return;
690
691 tl_sched:
692         tasklet_schedule(&pegasus->rx_tl);
693 }
694
695 static void rx_fixup(unsigned long data)
696 {
697         pegasus_t *pegasus;
698         unsigned long flags;
699
700         pegasus = (pegasus_t *) data;
701         if (pegasus->flags & PEGASUS_UNPLUG)
702                 return;
703
704         spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
705         fill_skb_pool(pegasus);
706         if (pegasus->flags & PEGASUS_RX_URB_FAIL)
707                 if (pegasus->rx_skb)
708                         goto try_again;
709         if (pegasus->rx_skb == NULL) {
710                 pegasus->rx_skb = pull_skb(pegasus);
711         }
712         if (pegasus->rx_skb == NULL) {
713                 if (netif_msg_rx_err(pegasus))
714                         printk(KERN_WARNING "%s: low on memory\n",
715                                         pegasus->net->name);
716                 tasklet_schedule(&pegasus->rx_tl);
717                 goto done;
718         }
719         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
720                           usb_rcvbulkpipe(pegasus->usb, 1),
721                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
722                           read_bulk_callback, pegasus);
723 try_again:
724         if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
725                 pegasus->flags |= PEGASUS_RX_URB_FAIL;
726                 tasklet_schedule(&pegasus->rx_tl);
727         } else {
728                 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
729         }
730 done:
731         spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
732 }
733
734 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
735 {
736         pegasus_t *pegasus = urb->context;
737         struct net_device *net = pegasus->net;
738
739         if (!pegasus)
740                 return;
741
742         if (!netif_device_present(net) || !netif_running(net))
743                 return;
744
745         switch (urb->status) {
746         case -EPIPE:
747                 /* FIXME schedule_work() to clear the tx halt */
748                 netif_stop_queue(net);
749                 if (netif_msg_tx_err(pegasus))
750                         printk(KERN_WARNING "%s: no tx stall recovery\n",
751                                         net->name);
752                 return;
753         case -ENOENT:
754         case -ECONNRESET:
755         case -ESHUTDOWN:
756                 if (netif_msg_ifdown(pegasus))
757                         pr_debug("%s: tx unlink, %d\n", net->name, urb->status);
758                 return;
759         default:
760                 if (netif_msg_tx_err(pegasus))
761                         pr_info("%s: TX status %d\n", net->name, urb->status);
762                 /* FALL THROUGH */
763         case 0:
764                 break;
765         }
766
767         net->trans_start = jiffies;
768         netif_wake_queue(net);
769 }
770
771 static void intr_callback(struct urb *urb, struct pt_regs *regs)
772 {
773         pegasus_t *pegasus = urb->context;
774         struct net_device *net;
775         int status;
776
777         if (!pegasus)
778                 return;
779         net = pegasus->net;
780
781         switch (urb->status) {
782         case 0:
783                 break;
784         case -ECONNRESET:       /* unlink */
785         case -ENOENT:
786         case -ESHUTDOWN:
787                 return;
788         default:
789                 /* some Pegasus-I products report LOTS of data
790                  * toggle errors... avoid log spamming
791                  */
792                 if (netif_msg_timer(pegasus))
793                         pr_debug("%s: intr status %d\n", net->name,
794                                         urb->status);
795         }
796
797         if (urb->actual_length >= 6) {
798                 u8      * d = urb->transfer_buffer;
799
800                 /* byte 0 == tx_status1, reg 2B */
801                 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
802                                         |LATE_COL|JABBER_TIMEOUT)) {
803                         pegasus->stats.tx_errors++;
804                         if (d[0] & TX_UNDERRUN)
805                                 pegasus->stats.tx_fifo_errors++;
806                         if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
807                                 pegasus->stats.tx_aborted_errors++;
808                         if (d[0] & LATE_COL)
809                                 pegasus->stats.tx_window_errors++;
810                 }
811
812                 /* d[5].LINK_STATUS lies on some adapters.
813                  * d[0].NO_CARRIER kicks in only with failed TX.
814                  * ... so monitoring with MII may be safest.
815                  */
816                 if (d[0] & NO_CARRIER)
817                         netif_carrier_off(net); 
818                 else
819                         netif_carrier_on(net);
820
821                 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
822                 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
823         }
824
825         status = usb_submit_urb(urb, SLAB_ATOMIC);
826         if (status && netif_msg_timer(pegasus))
827                 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
828                                 net->name, status);
829 }
830
831 static void pegasus_tx_timeout(struct net_device *net)
832 {
833         pegasus_t *pegasus = netdev_priv(net);
834         if (netif_msg_timer(pegasus))
835                 printk(KERN_WARNING "%s: tx timeout\n", net->name);
836         usb_unlink_urb(pegasus->tx_urb);
837         pegasus->stats.tx_errors++;
838 }
839
840 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
841 {
842         pegasus_t *pegasus = netdev_priv(net);
843         int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
844         int res;
845         __u16 l16 = skb->len;
846
847         netif_stop_queue(net);
848
849         ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
850         memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
851         usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
852                           usb_sndbulkpipe(pegasus->usb, 2),
853                           pegasus->tx_buff, count,
854                           write_bulk_callback, pegasus);
855         if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
856                 if (netif_msg_tx_err(pegasus))
857                         printk(KERN_WARNING "%s: fail tx, %d\n",
858                                         net->name, res);
859                 switch (res) {
860                 case -EPIPE:            /* stall, or disconnect from TT */
861                         /* cleanup should already have been scheduled */
862                         break;
863                 case -ENODEV:           /* disconnect() upcoming */
864                         break;
865                 default:
866                         pegasus->stats.tx_errors++;
867                         netif_start_queue(net);
868                 }
869         } else {
870                 pegasus->stats.tx_packets++;
871                 pegasus->stats.tx_bytes += skb->len;
872                 net->trans_start = jiffies;
873         }
874         dev_kfree_skb(skb);
875
876         return 0;
877 }
878
879 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
880 {
881         return &((pegasus_t *) netdev_priv(dev))->stats;
882 }
883
884 static inline void disable_net_traffic(pegasus_t * pegasus)
885 {
886         int tmp = 0;
887
888         set_registers(pegasus, EthCtrl0, 2, &tmp);
889 }
890
891 static inline void get_interrupt_interval(pegasus_t * pegasus)
892 {
893         __u8 data[2];
894
895         read_eprom_word(pegasus, 4, (__u16 *) data);
896         if (pegasus->usb->speed != USB_SPEED_HIGH) {
897                 if (data[1] < 0x80) {
898                         if (netif_msg_timer(pegasus))
899                                 dev_info(&pegasus->intf->dev, "intr interval "
900                                         "changed from %ums to %ums\n",
901                                         data[1], 0x80);
902                         data[1] = 0x80;
903 #ifdef PEGASUS_WRITE_EEPROM
904                         write_eprom_word(pegasus, 4, *(__u16 *) data);
905 #endif
906                 }
907         }
908         pegasus->intr_interval = data[1];
909 }
910
911 static void set_carrier(struct net_device *net)
912 {
913         pegasus_t *pegasus = netdev_priv(net);
914         u16 tmp;
915
916         if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
917                 return;
918
919         if (tmp & BMSR_LSTATUS)
920                 netif_carrier_on(net);
921         else
922                 netif_carrier_off(net);
923 }
924
925 static void free_all_urbs(pegasus_t * pegasus)
926 {
927         usb_free_urb(pegasus->intr_urb);
928         usb_free_urb(pegasus->tx_urb);
929         usb_free_urb(pegasus->rx_urb);
930         usb_free_urb(pegasus->ctrl_urb);
931 }
932
933 static void unlink_all_urbs(pegasus_t * pegasus)
934 {
935         usb_kill_urb(pegasus->intr_urb);
936         usb_kill_urb(pegasus->tx_urb);
937         usb_kill_urb(pegasus->rx_urb);
938         usb_kill_urb(pegasus->ctrl_urb);
939 }
940
941 static int alloc_urbs(pegasus_t * pegasus)
942 {
943         pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
944         if (!pegasus->ctrl_urb) {
945                 return 0;
946         }
947         pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
948         if (!pegasus->rx_urb) {
949                 usb_free_urb(pegasus->ctrl_urb);
950                 return 0;
951         }
952         pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
953         if (!pegasus->tx_urb) {
954                 usb_free_urb(pegasus->rx_urb);
955                 usb_free_urb(pegasus->ctrl_urb);
956                 return 0;
957         }
958         pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
959         if (!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                 return 0;
964         }
965
966         return 1;
967 }
968
969 static int pegasus_open(struct net_device *net)
970 {
971         pegasus_t *pegasus = netdev_priv(net);
972         int res;
973
974         if (pegasus->rx_skb == NULL)
975                 pegasus->rx_skb = pull_skb(pegasus);
976         /*
977          ** Note: no point to free the pool.  it is empty :-)
978          */
979         if (!pegasus->rx_skb)
980                 return -ENOMEM;
981
982         res = set_registers(pegasus, EthID, 6, net->dev_addr);
983         
984         usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
985                           usb_rcvbulkpipe(pegasus->usb, 1),
986                           pegasus->rx_skb->data, PEGASUS_MTU + 8,
987                           read_bulk_callback, pegasus);
988         if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
989                 if (netif_msg_ifup(pegasus))
990                         pr_debug("%s: failed rx_urb, %d", net->name, res);
991                 goto exit;
992         }
993
994         usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
995                          usb_rcvintpipe(pegasus->usb, 3),
996                          pegasus->intr_buff, sizeof (pegasus->intr_buff),
997                          intr_callback, pegasus, pegasus->intr_interval);
998         if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
999                 if (netif_msg_ifup(pegasus))
1000                         pr_debug("%s: failed intr_urb, %d\n", net->name, res);
1001                 usb_kill_urb(pegasus->rx_urb);
1002                 goto exit;
1003         }
1004         if ((res = enable_net_traffic(net, pegasus->usb))) {
1005                 if (netif_msg_ifup(pegasus))
1006                         pr_debug("%s: can't enable_net_traffic() - %d\n",
1007                                         net->name, res);
1008                 res = -EIO;
1009                 usb_kill_urb(pegasus->rx_urb);
1010                 usb_kill_urb(pegasus->intr_urb);
1011                 free_skb_pool(pegasus);
1012                 goto exit;
1013         }
1014         set_carrier(net);
1015         netif_start_queue(net);
1016         if (netif_msg_ifup(pegasus))
1017                 pr_debug("%s: open\n", net->name);
1018         res = 0;
1019 exit:
1020         return res;
1021 }
1022
1023 static int pegasus_close(struct net_device *net)
1024 {
1025         pegasus_t *pegasus = netdev_priv(net);
1026
1027         netif_stop_queue(net);
1028         if (!(pegasus->flags & PEGASUS_UNPLUG))
1029                 disable_net_traffic(pegasus);
1030         tasklet_kill(&pegasus->rx_tl);
1031         unlink_all_urbs(pegasus);
1032
1033         return 0;
1034 }
1035
1036 static void pegasus_get_drvinfo(struct net_device *dev,
1037                                 struct ethtool_drvinfo *info)
1038 {
1039         pegasus_t *pegasus = netdev_priv(dev);
1040         strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1041         strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1042         usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1043 }
1044
1045 /* also handles three patterns of some kind in hardware */
1046 #define WOL_SUPPORTED   (WAKE_MAGIC|WAKE_PHY)
1047
1048 static void
1049 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1050 {
1051         pegasus_t       *pegasus = netdev_priv(dev);
1052
1053         wol->supported = WAKE_MAGIC | WAKE_PHY;
1054         wol->wolopts = pegasus->wolopts;
1055 }
1056
1057 static int
1058 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1059 {
1060         pegasus_t       *pegasus = netdev_priv(dev);
1061         u8              reg78 = 0x04;
1062         
1063         if (wol->wolopts & ~WOL_SUPPORTED)
1064                 return -EINVAL;
1065
1066         if (wol->wolopts & WAKE_MAGIC)
1067                 reg78 |= 0x80;
1068         if (wol->wolopts & WAKE_PHY)
1069                 reg78 |= 0x40;
1070         /* FIXME this 0x10 bit still needs to get set in the chip... */
1071         if (wol->wolopts)
1072                 pegasus->eth_regs[0] |= 0x10;
1073         else
1074                 pegasus->eth_regs[0] &= ~0x10;
1075         pegasus->wolopts = wol->wolopts;
1076         return set_register(pegasus, WakeupControl, reg78);
1077 }
1078
1079 static inline void pegasus_reset_wol(struct net_device *dev)
1080 {
1081         struct ethtool_wolinfo wol;
1082         
1083         memset(&wol, 0, sizeof wol);
1084         (void) pegasus_set_wol(dev, &wol);
1085 }
1086
1087 static int
1088 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1089 {
1090         pegasus_t *pegasus;
1091
1092         if (in_atomic())
1093                 return 0;
1094
1095         pegasus = netdev_priv(dev);
1096         mii_ethtool_gset(&pegasus->mii, ecmd);
1097
1098         return 0;
1099 }
1100
1101 static int
1102 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1103 {
1104         pegasus_t *pegasus = netdev_priv(dev);
1105         return mii_ethtool_sset(&pegasus->mii, ecmd);
1106 }
1107
1108 static int pegasus_nway_reset(struct net_device *dev)
1109 {
1110         pegasus_t *pegasus = netdev_priv(dev);
1111         return mii_nway_restart(&pegasus->mii);
1112 }
1113
1114 static u32 pegasus_get_link(struct net_device *dev)
1115 {
1116         pegasus_t *pegasus = netdev_priv(dev);
1117         return mii_link_ok(&pegasus->mii);
1118 }
1119
1120 static u32 pegasus_get_msglevel(struct net_device *dev)
1121 {
1122         pegasus_t *pegasus = netdev_priv(dev);
1123         return pegasus->msg_enable;
1124 }
1125
1126 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1127 {
1128         pegasus_t *pegasus = netdev_priv(dev);
1129         pegasus->msg_enable = v;
1130 }
1131
1132 static struct ethtool_ops ops = {
1133         .get_drvinfo = pegasus_get_drvinfo,
1134         .get_settings = pegasus_get_settings,
1135         .set_settings = pegasus_set_settings,
1136         .nway_reset = pegasus_nway_reset,
1137         .get_link = pegasus_get_link,
1138         .get_msglevel = pegasus_get_msglevel,
1139         .set_msglevel = pegasus_set_msglevel,
1140         .get_wol = pegasus_get_wol,
1141         .set_wol = pegasus_set_wol,
1142 };
1143
1144 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1145 {
1146         __u16 *data = (__u16 *) & rq->ifr_ifru;
1147         pegasus_t *pegasus = netdev_priv(net);
1148         int res;
1149
1150         switch (cmd) {
1151         case SIOCDEVPRIVATE:
1152                 data[0] = pegasus->phy;
1153         case SIOCDEVPRIVATE + 1:
1154                 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1155                 res = 0;
1156                 break;
1157         case SIOCDEVPRIVATE + 2:
1158                 if (!capable(CAP_NET_ADMIN))
1159                         return -EPERM;
1160                 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1161                 res = 0;
1162                 break;
1163         default:
1164                 res = -EOPNOTSUPP;
1165         }
1166         return res;
1167 }
1168
1169 static void pegasus_set_multicast(struct net_device *net)
1170 {
1171         pegasus_t *pegasus = netdev_priv(net);
1172
1173         if (net->flags & IFF_PROMISC) {
1174                 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1175                 if (netif_msg_link(pegasus))
1176                         pr_info("%s: Promiscuous mode enabled.\n", net->name);
1177         } else if (net->mc_count ||
1178                    (net->flags & IFF_ALLMULTI)) {
1179                 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1180                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1181                 if (netif_msg_link(pegasus))
1182                         pr_info("%s: set allmulti\n", net->name);
1183         } else {
1184                 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1185                 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1186         }
1187
1188         pegasus->flags |= ETH_REGS_CHANGE;
1189         ctrl_callback(pegasus->ctrl_urb, NULL);
1190 }
1191
1192 static __u8 mii_phy_probe(pegasus_t * pegasus)
1193 {
1194         int i;
1195         __u16 tmp;
1196
1197         for (i = 0; i < 32; i++) {
1198                 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1199                 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1200                         continue;
1201                 else
1202                         return i;
1203         }
1204
1205         return 0xff;
1206 }
1207
1208 static inline void setup_pegasus_II(pegasus_t * pegasus)
1209 {
1210         __u8 data = 0xa5;
1211         
1212         set_register(pegasus, Reg1d, 0);
1213         set_register(pegasus, Reg7b, 1);
1214         mdelay(100);
1215         if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1216                 set_register(pegasus, Reg7b, 0);
1217         else
1218                 set_register(pegasus, Reg7b, 2);
1219
1220         set_register(pegasus, 0x83, data);
1221         get_registers(pegasus, 0x83, 1, &data);
1222
1223         if (data == 0xa5) {
1224                 pegasus->chip = 0x8513;
1225         } else {
1226                 pegasus->chip = 0;
1227         }
1228
1229         set_register(pegasus, 0x80, 0xc0);
1230         set_register(pegasus, 0x83, 0xff);
1231         set_register(pegasus, 0x84, 0x01);
1232         
1233         if (pegasus->features & HAS_HOME_PNA && mii_mode)
1234                 set_register(pegasus, Reg81, 6);
1235         else
1236                 set_register(pegasus, Reg81, 2);
1237 }
1238
1239
1240 static struct workqueue_struct *pegasus_workqueue = NULL;
1241 #define CARRIER_CHECK_DELAY (2 * HZ)
1242
1243 static void check_carrier(void *data)
1244 {
1245         pegasus_t *pegasus = data;
1246         set_carrier(pegasus->net);
1247         if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1248                 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1249                         CARRIER_CHECK_DELAY);
1250         }
1251 }
1252
1253 static int pegasus_probe(struct usb_interface *intf,
1254                          const struct usb_device_id *id)
1255 {
1256         struct usb_device *dev = interface_to_usbdev(intf);
1257         struct net_device *net;
1258         pegasus_t *pegasus;
1259         int dev_index = id - pegasus_ids;
1260         int res = -ENOMEM;
1261
1262         usb_get_dev(dev);
1263         net = alloc_etherdev(sizeof(struct pegasus));
1264         if (!net) {
1265                 dev_err(&intf->dev, "can't allocate %s\n", "device");
1266                 goto out;
1267         }
1268
1269         pegasus = netdev_priv(net);
1270         memset(pegasus, 0, sizeof (struct pegasus));
1271         pegasus->dev_index = dev_index;
1272         init_waitqueue_head(&pegasus->ctrl_wait);
1273
1274         if (!alloc_urbs(pegasus)) {
1275                 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1276                 goto out1;
1277         }
1278
1279         tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1280
1281         INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus);
1282
1283         pegasus->intf = intf;
1284         pegasus->usb = dev;
1285         pegasus->net = net;
1286         SET_MODULE_OWNER(net);
1287         net->open = pegasus_open;
1288         net->stop = pegasus_close;
1289         net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1290         net->tx_timeout = pegasus_tx_timeout;
1291         net->do_ioctl = pegasus_ioctl;
1292         net->hard_start_xmit = pegasus_start_xmit;
1293         net->set_multicast_list = pegasus_set_multicast;
1294         net->get_stats = pegasus_netdev_stats;
1295         SET_ETHTOOL_OPS(net, &ops);
1296         pegasus->mii.dev = net;
1297         pegasus->mii.mdio_read = mdio_read;
1298         pegasus->mii.mdio_write = mdio_write;
1299         pegasus->mii.phy_id_mask = 0x1f;
1300         pegasus->mii.reg_num_mask = 0x1f;
1301         spin_lock_init(&pegasus->rx_pool_lock);
1302         pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1303                                 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1304
1305         pegasus->features = usb_dev_id[dev_index].private;
1306         get_interrupt_interval(pegasus);
1307         if (reset_mac(pegasus)) {
1308                 dev_err(&intf->dev, "can't reset MAC\n");
1309                 res = -EIO;
1310                 goto out2;
1311         }
1312         set_ethernet_addr(pegasus);
1313         fill_skb_pool(pegasus);
1314         if (pegasus->features & PEGASUS_II) {
1315                 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1316                 setup_pegasus_II(pegasus);
1317         }
1318         pegasus->phy = mii_phy_probe(pegasus);
1319         if (pegasus->phy == 0xff) {
1320                 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1321                 pegasus->phy = 1;
1322         }
1323         pegasus->mii.phy_id = pegasus->phy;
1324         usb_set_intfdata(intf, pegasus);
1325         SET_NETDEV_DEV(net, &intf->dev);
1326         pegasus_reset_wol(net);
1327         res = register_netdev(net);
1328         if (res)
1329                 goto out3;
1330         queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1331                                 CARRIER_CHECK_DELAY);
1332
1333         dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n",
1334                 net->name,
1335                 usb_dev_id[dev_index].name,
1336                 net->dev_addr [0], net->dev_addr [1],
1337                 net->dev_addr [2], net->dev_addr [3],
1338                 net->dev_addr [4], net->dev_addr [5]);
1339         return 0;
1340
1341 out3:
1342         usb_set_intfdata(intf, NULL);
1343         free_skb_pool(pegasus);
1344 out2:
1345         free_all_urbs(pegasus);
1346 out1:
1347         free_netdev(net);
1348 out:
1349         usb_put_dev(dev);
1350         return res;
1351 }
1352
1353 static void pegasus_disconnect(struct usb_interface *intf)
1354 {
1355         struct pegasus *pegasus = usb_get_intfdata(intf);
1356
1357         usb_set_intfdata(intf, NULL);
1358         if (!pegasus) {
1359                 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1360                 return;
1361         }
1362
1363         pegasus->flags |= PEGASUS_UNPLUG;
1364         cancel_delayed_work(&pegasus->carrier_check);
1365         unregister_netdev(pegasus->net);
1366         usb_put_dev(interface_to_usbdev(intf));
1367         unlink_all_urbs(pegasus);
1368         free_all_urbs(pegasus);
1369         free_skb_pool(pegasus);
1370         if (pegasus->rx_skb)
1371                 dev_kfree_skb(pegasus->rx_skb);
1372         free_netdev(pegasus->net);
1373 }
1374
1375 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1376 {
1377         struct pegasus *pegasus = usb_get_intfdata(intf);
1378         
1379         netif_device_detach (pegasus->net);
1380         if (netif_running(pegasus->net)) {
1381                 cancel_delayed_work(&pegasus->carrier_check);
1382
1383                 usb_kill_urb(pegasus->rx_urb);
1384                 usb_kill_urb(pegasus->intr_urb);
1385         }
1386         return 0;
1387 }
1388
1389 static int pegasus_resume (struct usb_interface *intf)
1390 {
1391         struct pegasus *pegasus = usb_get_intfdata(intf);
1392
1393         netif_device_attach (pegasus->net);
1394         if (netif_running(pegasus->net)) {
1395                 pegasus->rx_urb->status = 0;
1396                 pegasus->rx_urb->actual_length = 0;
1397                 read_bulk_callback(pegasus->rx_urb, NULL);
1398
1399                 pegasus->intr_urb->status = 0;
1400                 pegasus->intr_urb->actual_length = 0;
1401                 intr_callback(pegasus->intr_urb, NULL);
1402
1403                 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1404                                         CARRIER_CHECK_DELAY);
1405         }
1406         return 0;
1407 }
1408
1409 static struct usb_driver pegasus_driver = {
1410         .name = driver_name,
1411         .probe = pegasus_probe,
1412         .disconnect = pegasus_disconnect,
1413         .id_table = pegasus_ids,
1414         .suspend = pegasus_suspend,
1415         .resume = pegasus_resume,
1416 };
1417
1418 static void parse_id(char *id)
1419 {
1420         unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1421         char *token, *name=NULL;
1422
1423         if ((token = strsep(&id, ":")) != NULL)
1424                 name = token;
1425         /* name now points to a null terminated string*/
1426         if ((token = strsep(&id, ":")) != NULL)
1427                 vendor_id = simple_strtoul(token, NULL, 16);
1428         if ((token = strsep(&id, ":")) != NULL)
1429                 device_id = simple_strtoul(token, NULL, 16);
1430         flags = simple_strtoul(id, NULL, 16);
1431         pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1432                 driver_name, name, vendor_id, device_id, flags);
1433
1434         if (vendor_id > 0x10000 || vendor_id == 0)
1435                 return;
1436         if (device_id > 0x10000 || device_id == 0)
1437                 return;
1438
1439         for (i=0; usb_dev_id[i].name; i++);
1440         usb_dev_id[i].name = name;
1441         usb_dev_id[i].vendor = vendor_id;
1442         usb_dev_id[i].device = device_id;
1443         usb_dev_id[i].private = flags;
1444         pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1445         pegasus_ids[i].idVendor = vendor_id;
1446         pegasus_ids[i].idProduct = device_id;
1447 }
1448
1449 static int __init pegasus_init(void)
1450 {
1451         pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1452         if (devid)
1453                 parse_id(devid);
1454         pegasus_workqueue = create_singlethread_workqueue("pegasus");
1455         if (!pegasus_workqueue)
1456                 return -ENOMEM;
1457         return usb_register(&pegasus_driver);
1458 }
1459
1460 static void __exit pegasus_exit(void)
1461 {
1462         destroy_workqueue(pegasus_workqueue);
1463         usb_deregister(&pegasus_driver);
1464 }
1465
1466 module_init(pegasus_init);
1467 module_exit(pegasus_exit);