Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / drivers / net / wireless / p54 / p54usb.c
1
2 /*
3  * Linux device driver for USB based Prism54
4  *
5  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
6  *
7  * Based on the islsm (softmac prism54) driver, which is:
8  * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  */
14
15 #include <linux/init.h>
16 #include <linux/usb.h>
17 #include <linux/pci.h>
18 #include <linux/firmware.h>
19 #include <linux/etherdevice.h>
20 #include <linux/delay.h>
21 #include <linux/crc32.h>
22 #include <net/mac80211.h>
23
24 #include "p54.h"
25 #include "lmac.h"
26 #include "p54usb.h"
27
28 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
29 MODULE_DESCRIPTION("Prism54 USB wireless driver");
30 MODULE_LICENSE("GPL");
31 MODULE_ALIAS("prism54usb");
32 MODULE_FIRMWARE("isl3886usb");
33 MODULE_FIRMWARE("isl3887usb");
34
35 static struct usb_device_id p54u_table[] __devinitdata = {
36         /* Version 1 devices (pci chip + net2280) */
37         {USB_DEVICE(0x0506, 0x0a11)},   /* 3COM 3CRWE254G72 */
38         {USB_DEVICE(0x0707, 0xee06)},   /* SMC 2862W-G */
39         {USB_DEVICE(0x083a, 0x4501)},   /* Accton 802.11g WN4501 USB */
40         {USB_DEVICE(0x083a, 0x4502)},   /* Siemens Gigaset USB Adapter */
41         {USB_DEVICE(0x083a, 0x5501)},   /* Phillips CPWUA054 */
42         {USB_DEVICE(0x0846, 0x4200)},   /* Netgear WG121 */
43         {USB_DEVICE(0x0846, 0x4210)},   /* Netgear WG121 the second ? */
44         {USB_DEVICE(0x0846, 0x4220)},   /* Netgear WG111 */
45         {USB_DEVICE(0x09aa, 0x1000)},   /* Spinnaker Proto board */
46         {USB_DEVICE(0x0cde, 0x0006)},   /* Medion 40900, Roper Europe */
47         {USB_DEVICE(0x124a, 0x4023)},   /* Shuttle PN15, Airvast WM168g, IOGear GWU513 */
48         {USB_DEVICE(0x1915, 0x2234)},   /* Linksys WUSB54G OEM */
49         {USB_DEVICE(0x1915, 0x2235)},   /* Linksys WUSB54G Portable OEM */
50         {USB_DEVICE(0x2001, 0x3701)},   /* DLink DWL-G120 Spinnaker */
51         {USB_DEVICE(0x2001, 0x3703)},   /* DLink DWL-G122 */
52         {USB_DEVICE(0x5041, 0x2234)},   /* Linksys WUSB54G */
53         {USB_DEVICE(0x5041, 0x2235)},   /* Linksys WUSB54G Portable */
54
55         /* Version 2 devices (3887) */
56         {USB_DEVICE(0x0471, 0x1230)},   /* Philips CPWUA054/00 */
57         {USB_DEVICE(0x050d, 0x7050)},   /* Belkin F5D7050 ver 1000 */
58         {USB_DEVICE(0x0572, 0x2000)},   /* Cohiba Proto board */
59         {USB_DEVICE(0x0572, 0x2002)},   /* Cohiba Proto board */
60         {USB_DEVICE(0x06b9, 0x0121)},   /* Thomson SpeedTouch 121g */
61         {USB_DEVICE(0x0707, 0xee13)},   /* SMC 2862W-G version 2 */
62         {USB_DEVICE(0x083a, 0x4521)},   /* Siemens Gigaset USB Adapter 54 version 2 */
63         {USB_DEVICE(0x0846, 0x4240)},   /* Netgear WG111 (v2) */
64         {USB_DEVICE(0x0915, 0x2000)},   /* Cohiba Proto board */
65         {USB_DEVICE(0x0915, 0x2002)},   /* Cohiba Proto board */
66         {USB_DEVICE(0x0baf, 0x0118)},   /* U.S. Robotics U5 802.11g Adapter*/
67         {USB_DEVICE(0x0bf8, 0x1009)},   /* FUJITSU E-5400 USB D1700*/
68         {USB_DEVICE(0x0cde, 0x0006)},   /* Medion MD40900 */
69         {USB_DEVICE(0x0cde, 0x0008)},   /* Sagem XG703A */
70         {USB_DEVICE(0x0d8e, 0x3762)},   /* DLink DWL-G120 Cohiba */
71         {USB_DEVICE(0x124a, 0x4025)},   /* IOGear GWU513 (GW3887IK chip) */
72         {USB_DEVICE(0x1260, 0xee22)},   /* SMC 2862W-G version 2 */
73         {USB_DEVICE(0x13b1, 0x000a)},   /* Linksys WUSB54G ver 2 */
74         {USB_DEVICE(0x13B1, 0x000C)},   /* Linksys WUSB54AG */
75         {USB_DEVICE(0x1413, 0x5400)},   /* Telsey 802.11g USB2.0 Adapter */
76         {USB_DEVICE(0x1435, 0x0427)},   /* Inventel UR054G */
77         {USB_DEVICE(0x2001, 0x3704)},   /* DLink DWL-G122 rev A2 */
78         {USB_DEVICE(0x413c, 0x8102)},   /* Spinnaker DUT */
79         {USB_DEVICE(0x413c, 0x8104)},   /* Cohiba Proto board */
80         {}
81 };
82
83 MODULE_DEVICE_TABLE(usb, p54u_table);
84
85 static const struct {
86         u32 intf;
87         enum p54u_hw_type type;
88         const char *fw;
89         const char *fw_legacy;
90         char hw[20];
91 } p54u_fwlist[__NUM_P54U_HWTYPES] = {
92         {
93                 .type = P54U_NET2280,
94                 .intf = FW_LM86,
95                 .fw = "isl3886usb",
96                 .fw_legacy = "isl3890usb",
97                 .hw = "ISL3886 + net2280",
98         },
99         {
100                 .type = P54U_3887,
101                 .intf = FW_LM87,
102                 .fw = "isl3887usb",
103                 .fw_legacy = "isl3887usb_bare",
104                 .hw = "ISL3887",
105         },
106 };
107
108 static void p54u_rx_cb(struct urb *urb)
109 {
110         struct sk_buff *skb = (struct sk_buff *) urb->context;
111         struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
112         struct ieee80211_hw *dev = info->dev;
113         struct p54u_priv *priv = dev->priv;
114
115         skb_unlink(skb, &priv->rx_queue);
116
117         if (unlikely(urb->status)) {
118                 dev_kfree_skb_irq(skb);
119                 return;
120         }
121
122         skb_put(skb, urb->actual_length);
123
124         if (priv->hw_type == P54U_NET2280)
125                 skb_pull(skb, priv->common.tx_hdr_len);
126         if (priv->common.fw_interface == FW_LM87) {
127                 skb_pull(skb, 4);
128                 skb_put(skb, 4);
129         }
130
131         if (p54_rx(dev, skb)) {
132                 skb = dev_alloc_skb(priv->common.rx_mtu + 32);
133                 if (unlikely(!skb)) {
134                         /* TODO check rx queue length and refill *somewhere* */
135                         return;
136                 }
137
138                 info = (struct p54u_rx_info *) skb->cb;
139                 info->urb = urb;
140                 info->dev = dev;
141                 urb->transfer_buffer = skb_tail_pointer(skb);
142                 urb->context = skb;
143         } else {
144                 if (priv->hw_type == P54U_NET2280)
145                         skb_push(skb, priv->common.tx_hdr_len);
146                 if (priv->common.fw_interface == FW_LM87) {
147                         skb_push(skb, 4);
148                         skb_put(skb, 4);
149                 }
150                 skb_reset_tail_pointer(skb);
151                 skb_trim(skb, 0);
152                 urb->transfer_buffer = skb_tail_pointer(skb);
153         }
154         skb_queue_tail(&priv->rx_queue, skb);
155         usb_anchor_urb(urb, &priv->submitted);
156         if (usb_submit_urb(urb, GFP_ATOMIC)) {
157                 skb_unlink(skb, &priv->rx_queue);
158                 usb_unanchor_urb(urb);
159                 dev_kfree_skb_irq(skb);
160         }
161 }
162
163 static void p54u_tx_cb(struct urb *urb)
164 {
165         struct sk_buff *skb = urb->context;
166         struct ieee80211_hw *dev = (struct ieee80211_hw *)
167                 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
168
169         p54_free_skb(dev, skb);
170 }
171
172 static void p54u_tx_dummy_cb(struct urb *urb) { }
173
174 static void p54u_free_urbs(struct ieee80211_hw *dev)
175 {
176         struct p54u_priv *priv = dev->priv;
177         usb_kill_anchored_urbs(&priv->submitted);
178 }
179
180 static int p54u_init_urbs(struct ieee80211_hw *dev)
181 {
182         struct p54u_priv *priv = dev->priv;
183         struct urb *entry = NULL;
184         struct sk_buff *skb;
185         struct p54u_rx_info *info;
186         int ret = 0;
187
188         while (skb_queue_len(&priv->rx_queue) < 32) {
189                 skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
190                 if (!skb) {
191                         ret = -ENOMEM;
192                         goto err;
193                 }
194                 entry = usb_alloc_urb(0, GFP_KERNEL);
195                 if (!entry) {
196                         ret = -ENOMEM;
197                         goto err;
198                 }
199
200                 usb_fill_bulk_urb(entry, priv->udev,
201                                   usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
202                                   skb_tail_pointer(skb),
203                                   priv->common.rx_mtu + 32, p54u_rx_cb, skb);
204                 info = (struct p54u_rx_info *) skb->cb;
205                 info->urb = entry;
206                 info->dev = dev;
207                 skb_queue_tail(&priv->rx_queue, skb);
208
209                 usb_anchor_urb(entry, &priv->submitted);
210                 ret = usb_submit_urb(entry, GFP_KERNEL);
211                 if (ret) {
212                         skb_unlink(skb, &priv->rx_queue);
213                         usb_unanchor_urb(entry);
214                         goto err;
215                 }
216                 usb_free_urb(entry);
217                 entry = NULL;
218         }
219
220         return 0;
221
222  err:
223         usb_free_urb(entry);
224         kfree_skb(skb);
225         p54u_free_urbs(dev);
226         return ret;
227 }
228
229 static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
230 {
231         u32 chk = 0;
232
233         length >>= 2;
234         while (length--) {
235                 chk ^= le32_to_cpu(*data++);
236                 chk = (chk >> 5) ^ (chk << 3);
237         }
238
239         return cpu_to_le32(chk);
240 }
241
242 static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
243 {
244         struct p54u_priv *priv = dev->priv;
245         struct urb *data_urb;
246         struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
247
248         data_urb = usb_alloc_urb(0, GFP_ATOMIC);
249         if (!data_urb) {
250                 p54_free_skb(dev, skb);
251                 return;
252         }
253
254         hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
255         hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
256
257         usb_fill_bulk_urb(data_urb, priv->udev,
258                           usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
259                           hdr, skb->len + sizeof(*hdr),  FREE_AFTER_TX(skb) ?
260                           p54u_tx_cb : p54u_tx_dummy_cb, skb);
261         data_urb->transfer_flags |= URB_ZERO_PACKET;
262
263         usb_anchor_urb(data_urb, &priv->submitted);
264         if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
265                 usb_unanchor_urb(data_urb);
266                 p54_free_skb(dev, skb);
267         }
268         usb_free_urb(data_urb);
269 }
270
271 static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
272 {
273         struct p54u_priv *priv = dev->priv;
274         struct urb *int_urb = NULL, *data_urb = NULL;
275         struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
276         struct net2280_reg_write *reg = NULL;
277         int err = -ENOMEM;
278
279         reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
280         if (!reg)
281                 goto out;
282
283         int_urb = usb_alloc_urb(0, GFP_ATOMIC);
284         if (!int_urb)
285                 goto out;
286
287         data_urb = usb_alloc_urb(0, GFP_ATOMIC);
288         if (!data_urb)
289                 goto out;
290
291         reg->port = cpu_to_le16(NET2280_DEV_U32);
292         reg->addr = cpu_to_le32(P54U_DEV_BASE);
293         reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
294
295         memset(hdr, 0, sizeof(*hdr));
296         hdr->len = cpu_to_le16(skb->len);
297         hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
298
299         usb_fill_bulk_urb(int_urb, priv->udev,
300                 usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
301                 p54u_tx_dummy_cb, dev);
302
303         /*
304          * URB_FREE_BUFFER triggers a code path in the USB subsystem that will
305          * free what is inside the transfer_buffer after the last reference to
306          * the int_urb is dropped.
307          */
308         int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
309         reg = NULL;
310
311         usb_fill_bulk_urb(data_urb, priv->udev,
312                           usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
313                           hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
314                           p54u_tx_cb : p54u_tx_dummy_cb, skb);
315         data_urb->transfer_flags |= URB_ZERO_PACKET;
316
317         usb_anchor_urb(int_urb, &priv->submitted);
318         err = usb_submit_urb(int_urb, GFP_ATOMIC);
319         if (err) {
320                 usb_unanchor_urb(int_urb);
321                 goto out;
322         }
323
324         usb_anchor_urb(data_urb, &priv->submitted);
325         err = usb_submit_urb(data_urb, GFP_ATOMIC);
326         if (err) {
327                 usb_unanchor_urb(data_urb);
328                 goto out;
329         }
330 out:
331         usb_free_urb(int_urb);
332         usb_free_urb(data_urb);
333
334         if (err) {
335                 kfree(reg);
336                 p54_free_skb(dev, skb);
337         }
338 }
339
340 static int p54u_write(struct p54u_priv *priv,
341                       struct net2280_reg_write *buf,
342                       enum net2280_op_type type,
343                       __le32 addr, __le32 val)
344 {
345         unsigned int ep;
346         int alen;
347
348         if (type & 0x0800)
349                 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
350         else
351                 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
352
353         buf->port = cpu_to_le16(type);
354         buf->addr = addr;
355         buf->val = val;
356
357         return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
358 }
359
360 static int p54u_read(struct p54u_priv *priv, void *buf,
361                      enum net2280_op_type type,
362                      __le32 addr, __le32 *val)
363 {
364         struct net2280_reg_read *read = buf;
365         __le32 *reg = buf;
366         unsigned int ep;
367         int alen, err;
368
369         if (type & 0x0800)
370                 ep = P54U_PIPE_DEV;
371         else
372                 ep = P54U_PIPE_BRG;
373
374         read->port = cpu_to_le16(type);
375         read->addr = addr;
376
377         err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
378                            read, sizeof(*read), &alen, 1000);
379         if (err)
380                 return err;
381
382         err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
383                            reg, sizeof(*reg), &alen, 1000);
384         if (err)
385                 return err;
386
387         *val = *reg;
388         return 0;
389 }
390
391 static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
392                          void *data, size_t len)
393 {
394         int alen;
395         return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
396                             data, len, &alen, 2000);
397 }
398
399 static int p54u_device_reset(struct ieee80211_hw *dev)
400 {
401         struct p54u_priv *priv = dev->priv;
402         int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
403
404         if (lock) {
405                 ret = usb_lock_device_for_reset(priv->udev, priv->intf);
406                 if (ret < 0) {
407                         dev_err(&priv->udev->dev, "(p54usb) unable to lock "
408                                 "device for reset (%d)!\n", ret);
409                         return ret;
410                 }
411         }
412
413         ret = usb_reset_device(priv->udev);
414         if (lock)
415                 usb_unlock_device(priv->udev);
416
417         if (ret)
418                 dev_err(&priv->udev->dev, "(p54usb) unable to reset "
419                         "device (%d)!\n", ret);
420
421         return ret;
422 }
423
424 static const char p54u_romboot_3887[] = "~~~~";
425 static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
426 {
427         struct p54u_priv *priv = dev->priv;
428         u8 buf[4];
429         int ret;
430
431         memcpy(&buf, p54u_romboot_3887, sizeof(buf));
432         ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
433                             buf, sizeof(buf));
434         if (ret)
435                 dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
436                         "boot ROM (%d)!\n", ret);
437
438         return ret;
439 }
440
441 static const char p54u_firmware_upload_3887[] = "<\r";
442 static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
443 {
444         struct p54u_priv *priv = dev->priv;
445         int err, alen;
446         u8 carry = 0;
447         u8 *buf, *tmp;
448         const u8 *data;
449         unsigned int left, remains, block_size;
450         struct x2_header *hdr;
451         unsigned long timeout;
452
453         err = p54u_firmware_reset_3887(dev);
454         if (err)
455                 return err;
456
457         tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
458         if (!buf) {
459                 dev_err(&priv->udev->dev, "(p54usb) cannot allocate firmware"
460                                           "upload buffer!\n");
461                 return -ENOMEM;
462         }
463
464         left = block_size = min((size_t)P54U_FW_BLOCK, priv->fw->size);
465         strcpy(buf, p54u_firmware_upload_3887);
466         left -= strlen(p54u_firmware_upload_3887);
467         tmp += strlen(p54u_firmware_upload_3887);
468
469         data = priv->fw->data;
470         remains = priv->fw->size;
471
472         hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
473         memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
474         hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
475         hdr->fw_length = cpu_to_le32(priv->fw->size);
476         hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
477                                          sizeof(u32)*2));
478         left -= sizeof(*hdr);
479         tmp += sizeof(*hdr);
480
481         while (remains) {
482                 while (left--) {
483                         if (carry) {
484                                 *tmp++ = carry;
485                                 carry = 0;
486                                 remains--;
487                                 continue;
488                         }
489                         switch (*data) {
490                         case '~':
491                                 *tmp++ = '}';
492                                 carry = '^';
493                                 break;
494                         case '}':
495                                 *tmp++ = '}';
496                                 carry = ']';
497                                 break;
498                         default:
499                                 *tmp++ = *data;
500                                 remains--;
501                                 break;
502                         }
503                         data++;
504                 }
505
506                 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
507                 if (err) {
508                         dev_err(&priv->udev->dev, "(p54usb) firmware "
509                                                   "upload failed!\n");
510                         goto err_upload_failed;
511                 }
512
513                 tmp = buf;
514                 left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
515         }
516
517         *((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, priv->fw->data,
518                                                  priv->fw->size));
519         err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
520         if (err) {
521                 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
522                 goto err_upload_failed;
523         }
524         timeout = jiffies + msecs_to_jiffies(1000);
525         while (!(err = usb_bulk_msg(priv->udev,
526                 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
527                 if (alen > 2 && !memcmp(buf, "OK", 2))
528                         break;
529
530                 if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
531                         err = -EINVAL;
532                         break;
533                 }
534
535                 if (time_after(jiffies, timeout)) {
536                         dev_err(&priv->udev->dev, "(p54usb) firmware boot "
537                                                   "timed out!\n");
538                         err = -ETIMEDOUT;
539                         break;
540                 }
541         }
542         if (err) {
543                 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
544                 goto err_upload_failed;
545         }
546
547         buf[0] = 'g';
548         buf[1] = '\r';
549         err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
550         if (err) {
551                 dev_err(&priv->udev->dev, "(p54usb) firmware boot failed!\n");
552                 goto err_upload_failed;
553         }
554
555         timeout = jiffies + msecs_to_jiffies(1000);
556         while (!(err = usb_bulk_msg(priv->udev,
557                 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
558                 if (alen > 0 && buf[0] == 'g')
559                         break;
560
561                 if (time_after(jiffies, timeout)) {
562                         err = -ETIMEDOUT;
563                         break;
564                 }
565         }
566         if (err)
567                 goto err_upload_failed;
568
569 err_upload_failed:
570         kfree(buf);
571         return err;
572 }
573
574 static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
575 {
576         struct p54u_priv *priv = dev->priv;
577         const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
578         int err, alen;
579         void *buf;
580         __le32 reg;
581         unsigned int remains, offset;
582         const u8 *data;
583
584         buf = kmalloc(512, GFP_KERNEL);
585         if (!buf) {
586                 dev_err(&priv->udev->dev, "(p54usb) firmware buffer "
587                                           "alloc failed!\n");
588                 return -ENOMEM;
589         }
590
591 #define P54U_WRITE(type, addr, data) \
592         do {\
593                 err = p54u_write(priv, buf, type,\
594                                  cpu_to_le32((u32)(unsigned long)addr), data);\
595                 if (err) \
596                         goto fail;\
597         } while (0)
598
599 #define P54U_READ(type, addr) \
600         do {\
601                 err = p54u_read(priv, buf, type,\
602                                 cpu_to_le32((u32)(unsigned long)addr), &reg);\
603                 if (err)\
604                         goto fail;\
605         } while (0)
606
607         /* power down net2280 bridge */
608         P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
609         reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
610         reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
611         P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
612
613         mdelay(100);
614
615         /* power up bridge */
616         reg |= cpu_to_le32(P54U_BRG_POWER_UP);
617         reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
618         P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
619
620         mdelay(100);
621
622         P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
623                    cpu_to_le32(NET2280_CLK_30Mhz |
624                                NET2280_PCI_ENABLE |
625                                NET2280_PCI_SOFT_RESET));
626
627         mdelay(20);
628
629         P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
630                    cpu_to_le32(PCI_COMMAND_MEMORY |
631                                PCI_COMMAND_MASTER));
632
633         P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
634                    cpu_to_le32(NET2280_BASE));
635
636         P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
637         reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
638         P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
639
640         // TODO: we really need this?
641         P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
642
643         P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
644                    cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
645         P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
646                    cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
647
648         P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
649                    cpu_to_le32(NET2280_BASE2));
650
651         /* finally done setting up the bridge */
652
653         P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
654                    cpu_to_le32(PCI_COMMAND_MEMORY |
655                                PCI_COMMAND_MASTER));
656
657         P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 /* TRDY timeout */, 0);
658         P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
659                    cpu_to_le32(P54U_DEV_BASE));
660
661         P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
662         P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
663                    cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
664
665         /* do romboot */
666         P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
667
668         P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
669         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
670         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
671         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
672         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
673
674         mdelay(20);
675
676         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
677         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
678
679         mdelay(20);
680
681         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
682         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
683
684         mdelay(100);
685
686         P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
687         P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
688
689         /* finally, we can upload firmware now! */
690         remains = priv->fw->size;
691         data = priv->fw->data;
692         offset = ISL38XX_DEV_FIRMWARE_ADDR;
693
694         while (remains) {
695                 unsigned int block_len = min(remains, (unsigned int)512);
696                 memcpy(buf, data, block_len);
697
698                 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
699                 if (err) {
700                         dev_err(&priv->udev->dev, "(p54usb) firmware block "
701                                                   "upload failed\n");
702                         goto fail;
703                 }
704
705                 P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
706                            cpu_to_le32(0xc0000f00));
707
708                 P54U_WRITE(NET2280_DEV_U32,
709                            0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
710                 P54U_WRITE(NET2280_DEV_U32,
711                            0x0020 | (unsigned long)&devreg->direct_mem_win,
712                            cpu_to_le32(1));
713
714                 P54U_WRITE(NET2280_DEV_U32,
715                            0x0024 | (unsigned long)&devreg->direct_mem_win,
716                            cpu_to_le32(block_len));
717                 P54U_WRITE(NET2280_DEV_U32,
718                            0x0028 | (unsigned long)&devreg->direct_mem_win,
719                            cpu_to_le32(offset));
720
721                 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
722                            cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
723                 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
724                            cpu_to_le32(block_len >> 2));
725                 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
726                            cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
727
728                 mdelay(10);
729
730                 P54U_READ(NET2280_DEV_U32,
731                           0x002C | (unsigned long)&devreg->direct_mem_win);
732                 if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
733                     !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
734                         dev_err(&priv->udev->dev, "(p54usb) firmware DMA "
735                                                   "transfer failed\n");
736                         goto fail;
737                 }
738
739                 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
740                            cpu_to_le32(NET2280_FIFO_FLUSH));
741
742                 remains -= block_len;
743                 data += block_len;
744                 offset += block_len;
745         }
746
747         /* do ramboot */
748         P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
749         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
750         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
751         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
752         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
753
754         mdelay(20);
755
756         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
757         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
758
759         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
760         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
761
762         mdelay(100);
763
764         P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
765         P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
766
767         /* start up the firmware */
768         P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
769                    cpu_to_le32(ISL38XX_INT_IDENT_INIT));
770
771         P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
772                    cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
773
774         P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
775                    cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
776                                NET2280_USB_INTERRUPT_ENABLE));
777
778         P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
779                    cpu_to_le32(ISL38XX_DEV_INT_RESET));
780
781         err = usb_interrupt_msg(priv->udev,
782                                 usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
783                                 buf, sizeof(__le32), &alen, 1000);
784         if (err || alen != sizeof(__le32))
785                 goto fail;
786
787         P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
788         P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
789
790         if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
791                 err = -EINVAL;
792
793         P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
794         P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
795                    cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
796
797 #undef P54U_WRITE
798 #undef P54U_READ
799
800 fail:
801         kfree(buf);
802         return err;
803 }
804
805 static int p54u_load_firmware(struct ieee80211_hw *dev)
806 {
807         struct p54u_priv *priv = dev->priv;
808         int err, i;
809
810         BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
811
812         for (i = 0; i < __NUM_P54U_HWTYPES; i++)
813                 if (p54u_fwlist[i].type == priv->hw_type)
814                         break;
815
816         if (i == __NUM_P54U_HWTYPES)
817                 return -EOPNOTSUPP;
818
819         err = request_firmware(&priv->fw, p54u_fwlist[i].fw, &priv->udev->dev);
820         if (err) {
821                 dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
822                                           "(%d)!\n", p54u_fwlist[i].fw, err);
823
824                 err = request_firmware(&priv->fw, p54u_fwlist[i].fw_legacy,
825                                        &priv->udev->dev);
826                 if (err)
827                         return err;
828         }
829
830         err = p54_parse_firmware(dev, priv->fw);
831         if (err)
832                 goto out;
833
834         if (priv->common.fw_interface != p54u_fwlist[i].intf) {
835                 dev_err(&priv->udev->dev, "wrong firmware, please get "
836                         "a firmware for \"%s\" and try again.\n",
837                         p54u_fwlist[i].hw);
838                 err = -EINVAL;
839         }
840
841 out:
842         if (err)
843                 release_firmware(priv->fw);
844
845         return err;
846 }
847
848 static int p54u_open(struct ieee80211_hw *dev)
849 {
850         struct p54u_priv *priv = dev->priv;
851         int err;
852
853         err = p54u_init_urbs(dev);
854         if (err) {
855                 return err;
856         }
857
858         priv->common.open = p54u_init_urbs;
859
860         return 0;
861 }
862
863 static void p54u_stop(struct ieee80211_hw *dev)
864 {
865         /* TODO: figure out how to reliably stop the 3887 and net2280 so
866            the hardware is still usable next time we want to start it.
867            until then, we just stop listening to the hardware.. */
868         p54u_free_urbs(dev);
869         return;
870 }
871
872 static int __devinit p54u_probe(struct usb_interface *intf,
873                                 const struct usb_device_id *id)
874 {
875         struct usb_device *udev = interface_to_usbdev(intf);
876         struct ieee80211_hw *dev;
877         struct p54u_priv *priv;
878         int err;
879         unsigned int i, recognized_pipes;
880
881         dev = p54_init_common(sizeof(*priv));
882
883         if (!dev) {
884                 dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
885                 return -ENOMEM;
886         }
887
888         priv = dev->priv;
889         priv->hw_type = P54U_INVALID_HW;
890
891         SET_IEEE80211_DEV(dev, &intf->dev);
892         usb_set_intfdata(intf, dev);
893         priv->udev = udev;
894         priv->intf = intf;
895         skb_queue_head_init(&priv->rx_queue);
896         init_usb_anchor(&priv->submitted);
897
898         usb_get_dev(udev);
899
900         /* really lazy and simple way of figuring out if we're a 3887 */
901         /* TODO: should just stick the identification in the device table */
902         i = intf->altsetting->desc.bNumEndpoints;
903         recognized_pipes = 0;
904         while (i--) {
905                 switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
906                 case P54U_PIPE_DATA:
907                 case P54U_PIPE_MGMT:
908                 case P54U_PIPE_BRG:
909                 case P54U_PIPE_DEV:
910                 case P54U_PIPE_DATA | USB_DIR_IN:
911                 case P54U_PIPE_MGMT | USB_DIR_IN:
912                 case P54U_PIPE_BRG | USB_DIR_IN:
913                 case P54U_PIPE_DEV | USB_DIR_IN:
914                 case P54U_PIPE_INT | USB_DIR_IN:
915                         recognized_pipes++;
916                 }
917         }
918         priv->common.open = p54u_open;
919         priv->common.stop = p54u_stop;
920         if (recognized_pipes < P54U_PIPE_NUMBER) {
921 #ifdef CONFIG_PM
922                 /* ISL3887 needs a full reset on resume */
923                 udev->reset_resume = 1;
924                 err = p54u_device_reset(dev);
925 #endif
926
927                 priv->hw_type = P54U_3887;
928                 dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
929                 priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
930                 priv->common.tx = p54u_tx_lm87;
931                 priv->upload_fw = p54u_upload_firmware_3887;
932         } else {
933                 priv->hw_type = P54U_NET2280;
934                 dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
935                 priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
936                 priv->common.tx = p54u_tx_net2280;
937                 priv->upload_fw = p54u_upload_firmware_net2280;
938         }
939         err = p54u_load_firmware(dev);
940         if (err)
941                 goto err_free_dev;
942
943         err = priv->upload_fw(dev);
944         if (err)
945                 goto err_free_fw;
946
947         p54u_open(dev);
948         err = p54_read_eeprom(dev);
949         p54u_stop(dev);
950         if (err)
951                 goto err_free_fw;
952
953         err = p54_register_common(dev, &udev->dev);
954         if (err)
955                 goto err_free_fw;
956
957         return 0;
958
959 err_free_fw:
960         release_firmware(priv->fw);
961
962 err_free_dev:
963         p54_free_common(dev);
964         usb_set_intfdata(intf, NULL);
965         usb_put_dev(udev);
966         return err;
967 }
968
969 static void __devexit p54u_disconnect(struct usb_interface *intf)
970 {
971         struct ieee80211_hw *dev = usb_get_intfdata(intf);
972         struct p54u_priv *priv;
973
974         if (!dev)
975                 return;
976
977         p54_unregister_common(dev);
978
979         priv = dev->priv;
980         usb_put_dev(interface_to_usbdev(intf));
981         release_firmware(priv->fw);
982         p54_free_common(dev);
983 }
984
985 static int p54u_pre_reset(struct usb_interface *intf)
986 {
987         struct ieee80211_hw *dev = usb_get_intfdata(intf);
988
989         if (!dev)
990                 return -ENODEV;
991
992         p54u_stop(dev);
993         return 0;
994 }
995
996 static int p54u_resume(struct usb_interface *intf)
997 {
998         struct ieee80211_hw *dev = usb_get_intfdata(intf);
999         struct p54u_priv *priv;
1000
1001         if (!dev)
1002                 return -ENODEV;
1003
1004         priv = dev->priv;
1005         if (unlikely(!(priv->upload_fw && priv->fw)))
1006                 return 0;
1007
1008         return priv->upload_fw(dev);
1009 }
1010
1011 static int p54u_post_reset(struct usb_interface *intf)
1012 {
1013         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1014         struct p54u_priv *priv;
1015         int err;
1016
1017         err = p54u_resume(intf);
1018         if (err)
1019                 return err;
1020
1021         /* reinitialize old device state */
1022         priv = dev->priv;
1023         if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
1024                 ieee80211_restart_hw(dev);
1025
1026         return 0;
1027 }
1028
1029 #ifdef CONFIG_PM
1030
1031 static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
1032 {
1033         return p54u_pre_reset(intf);
1034 }
1035
1036 #endif /* CONFIG_PM */
1037
1038 static struct usb_driver p54u_driver = {
1039         .name   = "p54usb",
1040         .id_table = p54u_table,
1041         .probe = p54u_probe,
1042         .disconnect = p54u_disconnect,
1043         .pre_reset = p54u_pre_reset,
1044         .post_reset = p54u_post_reset,
1045 #ifdef CONFIG_PM
1046         .suspend = p54u_suspend,
1047         .resume = p54u_resume,
1048         .reset_resume = p54u_resume,
1049 #endif /* CONFIG_PM */
1050         .soft_unbind = 1,
1051 };
1052
1053 static int __init p54u_init(void)
1054 {
1055         return usb_register(&p54u_driver);
1056 }
1057
1058 static void __exit p54u_exit(void)
1059 {
1060         usb_deregister(&p54u_driver);
1061 }
1062
1063 module_init(p54u_init);
1064 module_exit(p54u_exit);