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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/slab.h>
19#include <linux/firmware.h>
20#include <linux/etherdevice.h>
21#include <linux/delay.h>
22#include <linux/crc32.h>
23#include <linux/module.h>
24#include <net/mac80211.h>
25
26#include "p54.h"
27#include "lmac.h"
28#include "p54usb.h"
29
30MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
31MODULE_DESCRIPTION("Prism54 USB wireless driver");
32MODULE_LICENSE("GPL");
33MODULE_ALIAS("prism54usb");
34MODULE_FIRMWARE("isl3886usb");
35MODULE_FIRMWARE("isl3887usb");
36
37/*
38 * Note:
39 *
40 * Always update our wiki's device list (located at:
41 * http://wireless.kernel.org/en/users/Drivers/p54/devices ),
42 * whenever you add a new device.
43 */
44
45static struct usb_device_id p54u_table[] = {
46 /* Version 1 devices (pci chip + net2280) */
47 {USB_DEVICE(0x0411, 0x0050)}, /* Buffalo WLI2-USB2-G54 */
48 {USB_DEVICE(0x045e, 0x00c2)}, /* Microsoft MN-710 */
49 {USB_DEVICE(0x0506, 0x0a11)}, /* 3COM 3CRWE254G72 */
50 {USB_DEVICE(0x06b9, 0x0120)}, /* Thomson SpeedTouch 120g */
51 {USB_DEVICE(0x0707, 0xee06)}, /* SMC 2862W-G */
52 {USB_DEVICE(0x07aa, 0x001c)}, /* Corega CG-WLUSB2GT */
53 {USB_DEVICE(0x083a, 0x4501)}, /* Accton 802.11g WN4501 USB */
54 {USB_DEVICE(0x083a, 0x4502)}, /* Siemens Gigaset USB Adapter */
55 {USB_DEVICE(0x083a, 0x5501)}, /* Phillips CPWUA054 */
56 {USB_DEVICE(0x0846, 0x4200)}, /* Netgear WG121 */
57 {USB_DEVICE(0x0846, 0x4210)}, /* Netgear WG121 the second ? */
58 {USB_DEVICE(0x0846, 0x4220)}, /* Netgear WG111 */
59 {USB_DEVICE(0x09aa, 0x1000)}, /* Spinnaker Proto board */
60 {USB_DEVICE(0x0bf8, 0x1007)}, /* Fujitsu E-5400 USB */
61 {USB_DEVICE(0x0cde, 0x0006)}, /* Medion 40900, Roper Europe */
62 {USB_DEVICE(0x0db0, 0x6826)}, /* MSI UB54G (MS-6826) */
63 {USB_DEVICE(0x107b, 0x55f2)}, /* Gateway WGU-210 (Gemtek) */
64 {USB_DEVICE(0x124a, 0x4023)}, /* Shuttle PN15, Airvast WM168g, IOGear GWU513 */
65 {USB_DEVICE(0x1435, 0x0210)}, /* Inventel UR054G */
66 {USB_DEVICE(0x15a9, 0x0002)}, /* Gemtek WUBI-100GW 802.11g */
67 {USB_DEVICE(0x1630, 0x0005)}, /* 2Wire 802.11g USB (v1) / Z-Com */
68 {USB_DEVICE(0x182d, 0x096b)}, /* Sitecom WL-107 */
69 {USB_DEVICE(0x1915, 0x2234)}, /* Linksys WUSB54G OEM */
70 {USB_DEVICE(0x1915, 0x2235)}, /* Linksys WUSB54G Portable OEM */
71 {USB_DEVICE(0x2001, 0x3701)}, /* DLink DWL-G120 Spinnaker */
72 {USB_DEVICE(0x2001, 0x3703)}, /* DLink DWL-G122 */
73 {USB_DEVICE(0x2001, 0x3762)}, /* Conceptronic C54U */
74 {USB_DEVICE(0x5041, 0x2234)}, /* Linksys WUSB54G */
75 {USB_DEVICE(0x5041, 0x2235)}, /* Linksys WUSB54G Portable */
76
77 /* Version 2 devices (3887) */
78 {USB_DEVICE(0x0471, 0x1230)}, /* Philips CPWUA054/00 */
79 {USB_DEVICE(0x050d, 0x7050)}, /* Belkin F5D7050 ver 1000 */
80 {USB_DEVICE(0x0572, 0x2000)}, /* Cohiba Proto board */
81 {USB_DEVICE(0x0572, 0x2002)}, /* Cohiba Proto board */
82 {USB_DEVICE(0x06a9, 0x000e)}, /* Westell 802.11g USB (A90-211WG-01) */
83 {USB_DEVICE(0x06b9, 0x0121)}, /* Thomson SpeedTouch 121g */
84 {USB_DEVICE(0x0707, 0xee13)}, /* SMC 2862W-G version 2 */
85 {USB_DEVICE(0x083a, 0x4521)}, /* Siemens Gigaset USB Adapter 54 version 2 */
86 {USB_DEVICE(0x083a, 0xc501)}, /* Zoom Wireless-G 4410 */
87 {USB_DEVICE(0x083a, 0xf503)}, /* Accton FD7050E ver 1010ec */
88 {USB_DEVICE(0x0846, 0x4240)}, /* Netgear WG111 (v2) */
89 {USB_DEVICE(0x0915, 0x2000)}, /* Cohiba Proto board */
90 {USB_DEVICE(0x0915, 0x2002)}, /* Cohiba Proto board */
91 {USB_DEVICE(0x0baf, 0x0118)}, /* U.S. Robotics U5 802.11g Adapter*/
92 {USB_DEVICE(0x0bf8, 0x1009)}, /* FUJITSU E-5400 USB D1700*/
93 /* {USB_DEVICE(0x0cde, 0x0006)}, * Medion MD40900 already listed above,
94 * just noting it here for clarity */
95 {USB_DEVICE(0x0cde, 0x0008)}, /* Sagem XG703A */
96 {USB_DEVICE(0x0cde, 0x0015)}, /* Zcomax XG-705A */
97 {USB_DEVICE(0x0d8e, 0x3762)}, /* DLink DWL-G120 Cohiba */
98 {USB_DEVICE(0x124a, 0x4025)}, /* IOGear GWU513 (GW3887IK chip) */
99 {USB_DEVICE(0x1260, 0xee22)}, /* SMC 2862W-G version 2 */
100 {USB_DEVICE(0x13b1, 0x000a)}, /* Linksys WUSB54G ver 2 */
101 {USB_DEVICE(0x13B1, 0x000C)}, /* Linksys WUSB54AG */
102 {USB_DEVICE(0x1413, 0x5400)}, /* Telsey 802.11g USB2.0 Adapter */
103 {USB_DEVICE(0x1435, 0x0427)}, /* Inventel UR054G */
104 {USB_DEVICE(0x1668, 0x1050)}, /* Actiontec 802UIG-1 */
105 {USB_DEVICE(0x1740, 0x1000)}, /* Senao NUB-350 */
106 {USB_DEVICE(0x2001, 0x3704)}, /* DLink DWL-G122 rev A2 */
107 {USB_DEVICE(0x2001, 0x3705)}, /* D-Link DWL-G120 rev C1 */
108 {USB_DEVICE(0x413c, 0x5513)}, /* Dell WLA3310 USB Wireless Adapter */
109 {USB_DEVICE(0x413c, 0x8102)}, /* Spinnaker DUT */
110 {USB_DEVICE(0x413c, 0x8104)}, /* Cohiba Proto board */
111 {}
112};
113
114MODULE_DEVICE_TABLE(usb, p54u_table);
115
116static const struct {
117 u32 intf;
118 enum p54u_hw_type type;
119 const char *fw;
120 char hw[20];
121} p54u_fwlist[__NUM_P54U_HWTYPES] = {
122 {
123 .type = P54U_NET2280,
124 .intf = FW_LM86,
125 .fw = "isl3886usb",
126 .hw = "ISL3886 + net2280",
127 },
128 {
129 .type = P54U_3887,
130 .intf = FW_LM87,
131 .fw = "isl3887usb",
132 .hw = "ISL3887",
133 },
134};
135
136static void p54u_rx_cb(struct urb *urb)
137{
138 struct sk_buff *skb = (struct sk_buff *) urb->context;
139 struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
140 struct ieee80211_hw *dev = info->dev;
141 struct p54u_priv *priv = dev->priv;
142
143 skb_unlink(skb, &priv->rx_queue);
144
145 if (unlikely(urb->status)) {
146 dev_kfree_skb_irq(skb);
147 return;
148 }
149
150 skb_put(skb, urb->actual_length);
151
152 if (priv->hw_type == P54U_NET2280)
153 skb_pull(skb, priv->common.tx_hdr_len);
154 if (priv->common.fw_interface == FW_LM87) {
155 skb_pull(skb, 4);
156 skb_put(skb, 4);
157 }
158
159 if (p54_rx(dev, skb)) {
160 skb = dev_alloc_skb(priv->common.rx_mtu + 32);
161 if (unlikely(!skb)) {
162 /* TODO check rx queue length and refill *somewhere* */
163 return;
164 }
165
166 info = (struct p54u_rx_info *) skb->cb;
167 info->urb = urb;
168 info->dev = dev;
169 urb->transfer_buffer = skb_tail_pointer(skb);
170 urb->context = skb;
171 } else {
172 if (priv->hw_type == P54U_NET2280)
173 skb_push(skb, priv->common.tx_hdr_len);
174 if (priv->common.fw_interface == FW_LM87) {
175 skb_push(skb, 4);
176 skb_put(skb, 4);
177 }
178 skb_reset_tail_pointer(skb);
179 skb_trim(skb, 0);
180 urb->transfer_buffer = skb_tail_pointer(skb);
181 }
182 skb_queue_tail(&priv->rx_queue, skb);
183 usb_anchor_urb(urb, &priv->submitted);
184 if (usb_submit_urb(urb, GFP_ATOMIC)) {
185 skb_unlink(skb, &priv->rx_queue);
186 usb_unanchor_urb(urb);
187 dev_kfree_skb_irq(skb);
188 }
189}
190
191static void p54u_tx_cb(struct urb *urb)
192{
193 struct sk_buff *skb = urb->context;
194 struct ieee80211_hw *dev =
195 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
196
197 p54_free_skb(dev, skb);
198}
199
200static void p54u_tx_dummy_cb(struct urb *urb) { }
201
202static void p54u_free_urbs(struct ieee80211_hw *dev)
203{
204 struct p54u_priv *priv = dev->priv;
205 usb_kill_anchored_urbs(&priv->submitted);
206}
207
208static void p54u_stop(struct ieee80211_hw *dev)
209{
210 /*
211 * TODO: figure out how to reliably stop the 3887 and net2280 so
212 * the hardware is still usable next time we want to start it.
213 * until then, we just stop listening to the hardware..
214 */
215 p54u_free_urbs(dev);
216}
217
218static int p54u_init_urbs(struct ieee80211_hw *dev)
219{
220 struct p54u_priv *priv = dev->priv;
221 struct urb *entry = NULL;
222 struct sk_buff *skb;
223 struct p54u_rx_info *info;
224 int ret = 0;
225
226 while (skb_queue_len(&priv->rx_queue) < 32) {
227 skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
228 if (!skb) {
229 ret = -ENOMEM;
230 goto err;
231 }
232 entry = usb_alloc_urb(0, GFP_KERNEL);
233 if (!entry) {
234 ret = -ENOMEM;
235 goto err;
236 }
237
238 usb_fill_bulk_urb(entry, priv->udev,
239 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
240 skb_tail_pointer(skb),
241 priv->common.rx_mtu + 32, p54u_rx_cb, skb);
242 info = (struct p54u_rx_info *) skb->cb;
243 info->urb = entry;
244 info->dev = dev;
245 skb_queue_tail(&priv->rx_queue, skb);
246
247 usb_anchor_urb(entry, &priv->submitted);
248 ret = usb_submit_urb(entry, GFP_KERNEL);
249 if (ret) {
250 skb_unlink(skb, &priv->rx_queue);
251 usb_unanchor_urb(entry);
252 goto err;
253 }
254 usb_free_urb(entry);
255 entry = NULL;
256 }
257
258 return 0;
259
260 err:
261 usb_free_urb(entry);
262 kfree_skb(skb);
263 p54u_free_urbs(dev);
264 return ret;
265}
266
267static int p54u_open(struct ieee80211_hw *dev)
268{
269 /*
270 * TODO: Because we don't know how to reliably stop the 3887 and
271 * the isl3886+net2280, other than brutally cut off all
272 * communications. We have to reinitialize the urbs on every start.
273 */
274 return p54u_init_urbs(dev);
275}
276
277static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
278{
279 u32 chk = 0;
280
281 length >>= 2;
282 while (length--) {
283 chk ^= le32_to_cpu(*data++);
284 chk = (chk >> 5) ^ (chk << 3);
285 }
286
287 return cpu_to_le32(chk);
288}
289
290static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
291{
292 struct p54u_priv *priv = dev->priv;
293 struct urb *data_urb;
294 struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
295
296 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
297 if (!data_urb) {
298 p54_free_skb(dev, skb);
299 return;
300 }
301
302 hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
303 hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
304
305 usb_fill_bulk_urb(data_urb, priv->udev,
306 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
307 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
308 p54u_tx_cb : p54u_tx_dummy_cb, skb);
309 data_urb->transfer_flags |= URB_ZERO_PACKET;
310
311 usb_anchor_urb(data_urb, &priv->submitted);
312 if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
313 usb_unanchor_urb(data_urb);
314 p54_free_skb(dev, skb);
315 }
316 usb_free_urb(data_urb);
317}
318
319static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
320{
321 struct p54u_priv *priv = dev->priv;
322 struct urb *int_urb = NULL, *data_urb = NULL;
323 struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
324 struct net2280_reg_write *reg = NULL;
325 int err = -ENOMEM;
326
327 reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
328 if (!reg)
329 goto out;
330
331 int_urb = usb_alloc_urb(0, GFP_ATOMIC);
332 if (!int_urb)
333 goto out;
334
335 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
336 if (!data_urb)
337 goto out;
338
339 reg->port = cpu_to_le16(NET2280_DEV_U32);
340 reg->addr = cpu_to_le32(P54U_DEV_BASE);
341 reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
342
343 memset(hdr, 0, sizeof(*hdr));
344 hdr->len = cpu_to_le16(skb->len);
345 hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
346
347 usb_fill_bulk_urb(int_urb, priv->udev,
348 usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
349 p54u_tx_dummy_cb, dev);
350
351 /*
352 * URB_FREE_BUFFER triggers a code path in the USB subsystem that will
353 * free what is inside the transfer_buffer after the last reference to
354 * the int_urb is dropped.
355 */
356 int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
357 reg = NULL;
358
359 usb_fill_bulk_urb(data_urb, priv->udev,
360 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
361 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
362 p54u_tx_cb : p54u_tx_dummy_cb, skb);
363 data_urb->transfer_flags |= URB_ZERO_PACKET;
364
365 usb_anchor_urb(int_urb, &priv->submitted);
366 err = usb_submit_urb(int_urb, GFP_ATOMIC);
367 if (err) {
368 usb_unanchor_urb(int_urb);
369 goto out;
370 }
371
372 usb_anchor_urb(data_urb, &priv->submitted);
373 err = usb_submit_urb(data_urb, GFP_ATOMIC);
374 if (err) {
375 usb_unanchor_urb(data_urb);
376 goto out;
377 }
378out:
379 usb_free_urb(int_urb);
380 usb_free_urb(data_urb);
381
382 if (err) {
383 kfree(reg);
384 p54_free_skb(dev, skb);
385 }
386}
387
388static int p54u_write(struct p54u_priv *priv,
389 struct net2280_reg_write *buf,
390 enum net2280_op_type type,
391 __le32 addr, __le32 val)
392{
393 unsigned int ep;
394 int alen;
395
396 if (type & 0x0800)
397 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
398 else
399 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
400
401 buf->port = cpu_to_le16(type);
402 buf->addr = addr;
403 buf->val = val;
404
405 return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
406}
407
408static int p54u_read(struct p54u_priv *priv, void *buf,
409 enum net2280_op_type type,
410 __le32 addr, __le32 *val)
411{
412 struct net2280_reg_read *read = buf;
413 __le32 *reg = buf;
414 unsigned int ep;
415 int alen, err;
416
417 if (type & 0x0800)
418 ep = P54U_PIPE_DEV;
419 else
420 ep = P54U_PIPE_BRG;
421
422 read->port = cpu_to_le16(type);
423 read->addr = addr;
424
425 err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
426 read, sizeof(*read), &alen, 1000);
427 if (err)
428 return err;
429
430 err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
431 reg, sizeof(*reg), &alen, 1000);
432 if (err)
433 return err;
434
435 *val = *reg;
436 return 0;
437}
438
439static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
440 void *data, size_t len)
441{
442 int alen;
443 return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
444 data, len, &alen, 2000);
445}
446
447static int p54u_device_reset(struct ieee80211_hw *dev)
448{
449 struct p54u_priv *priv = dev->priv;
450 int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
451
452 if (lock) {
453 ret = usb_lock_device_for_reset(priv->udev, priv->intf);
454 if (ret < 0) {
455 dev_err(&priv->udev->dev, "(p54usb) unable to lock "
456 "device for reset (%d)!\n", ret);
457 return ret;
458 }
459 }
460
461 ret = usb_reset_device(priv->udev);
462 if (lock)
463 usb_unlock_device(priv->udev);
464
465 if (ret)
466 dev_err(&priv->udev->dev, "(p54usb) unable to reset "
467 "device (%d)!\n", ret);
468
469 return ret;
470}
471
472static const char p54u_romboot_3887[] = "~~~~";
473static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
474{
475 struct p54u_priv *priv = dev->priv;
476 u8 *buf;
477 int ret;
478
479 buf = kmemdup(p54u_romboot_3887, 4, GFP_KERNEL);
480 if (!buf)
481 return -ENOMEM;
482 ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
483 buf, 4);
484 kfree(buf);
485 if (ret)
486 dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
487 "boot ROM (%d)!\n", ret);
488
489 return ret;
490}
491
492static const char p54u_firmware_upload_3887[] = "<\r";
493static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
494{
495 struct p54u_priv *priv = dev->priv;
496 int err, alen;
497 u8 carry = 0;
498 u8 *buf, *tmp;
499 const u8 *data;
500 unsigned int left, remains, block_size;
501 struct x2_header *hdr;
502 unsigned long timeout;
503
504 err = p54u_firmware_reset_3887(dev);
505 if (err)
506 return err;
507
508 tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
509 if (!buf) {
510 dev_err(&priv->udev->dev, "(p54usb) cannot allocate firmware"
511 "upload buffer!\n");
512 return -ENOMEM;
513 }
514
515 left = block_size = min((size_t)P54U_FW_BLOCK, priv->fw->size);
516 strcpy(buf, p54u_firmware_upload_3887);
517 left -= strlen(p54u_firmware_upload_3887);
518 tmp += strlen(p54u_firmware_upload_3887);
519
520 data = priv->fw->data;
521 remains = priv->fw->size;
522
523 hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
524 memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
525 hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
526 hdr->fw_length = cpu_to_le32(priv->fw->size);
527 hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
528 sizeof(u32)*2));
529 left -= sizeof(*hdr);
530 tmp += sizeof(*hdr);
531
532 while (remains) {
533 while (left--) {
534 if (carry) {
535 *tmp++ = carry;
536 carry = 0;
537 remains--;
538 continue;
539 }
540 switch (*data) {
541 case '~':
542 *tmp++ = '}';
543 carry = '^';
544 break;
545 case '}':
546 *tmp++ = '}';
547 carry = ']';
548 break;
549 default:
550 *tmp++ = *data;
551 remains--;
552 break;
553 }
554 data++;
555 }
556
557 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
558 if (err) {
559 dev_err(&priv->udev->dev, "(p54usb) firmware "
560 "upload failed!\n");
561 goto err_upload_failed;
562 }
563
564 tmp = buf;
565 left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
566 }
567
568 *((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, priv->fw->data,
569 priv->fw->size));
570 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
571 if (err) {
572 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
573 goto err_upload_failed;
574 }
575 timeout = jiffies + msecs_to_jiffies(1000);
576 while (!(err = usb_bulk_msg(priv->udev,
577 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
578 if (alen > 2 && !memcmp(buf, "OK", 2))
579 break;
580
581 if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
582 err = -EINVAL;
583 break;
584 }
585
586 if (time_after(jiffies, timeout)) {
587 dev_err(&priv->udev->dev, "(p54usb) firmware boot "
588 "timed out!\n");
589 err = -ETIMEDOUT;
590 break;
591 }
592 }
593 if (err) {
594 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
595 goto err_upload_failed;
596 }
597
598 buf[0] = 'g';
599 buf[1] = '\r';
600 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
601 if (err) {
602 dev_err(&priv->udev->dev, "(p54usb) firmware boot failed!\n");
603 goto err_upload_failed;
604 }
605
606 timeout = jiffies + msecs_to_jiffies(1000);
607 while (!(err = usb_bulk_msg(priv->udev,
608 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
609 if (alen > 0 && buf[0] == 'g')
610 break;
611
612 if (time_after(jiffies, timeout)) {
613 err = -ETIMEDOUT;
614 break;
615 }
616 }
617 if (err)
618 goto err_upload_failed;
619
620err_upload_failed:
621 kfree(buf);
622 return err;
623}
624
625static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
626{
627 struct p54u_priv *priv = dev->priv;
628 const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
629 int err, alen;
630 void *buf;
631 __le32 reg;
632 unsigned int remains, offset;
633 const u8 *data;
634
635 buf = kmalloc(512, GFP_KERNEL);
636 if (!buf) {
637 dev_err(&priv->udev->dev, "(p54usb) firmware buffer "
638 "alloc failed!\n");
639 return -ENOMEM;
640 }
641
642#define P54U_WRITE(type, addr, data) \
643 do {\
644 err = p54u_write(priv, buf, type,\
645 cpu_to_le32((u32)(unsigned long)addr), data);\
646 if (err) \
647 goto fail;\
648 } while (0)
649
650#define P54U_READ(type, addr) \
651 do {\
652 err = p54u_read(priv, buf, type,\
653 cpu_to_le32((u32)(unsigned long)addr), ®);\
654 if (err)\
655 goto fail;\
656 } while (0)
657
658 /* power down net2280 bridge */
659 P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
660 reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
661 reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
662 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
663
664 mdelay(100);
665
666 /* power up bridge */
667 reg |= cpu_to_le32(P54U_BRG_POWER_UP);
668 reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
669 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
670
671 mdelay(100);
672
673 P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
674 cpu_to_le32(NET2280_CLK_30Mhz |
675 NET2280_PCI_ENABLE |
676 NET2280_PCI_SOFT_RESET));
677
678 mdelay(20);
679
680 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
681 cpu_to_le32(PCI_COMMAND_MEMORY |
682 PCI_COMMAND_MASTER));
683
684 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
685 cpu_to_le32(NET2280_BASE));
686
687 P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
688 reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
689 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
690
691 // TODO: we really need this?
692 P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
693
694 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
695 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
696 P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
697 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
698
699 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
700 cpu_to_le32(NET2280_BASE2));
701
702 /* finally done setting up the bridge */
703
704 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
705 cpu_to_le32(PCI_COMMAND_MEMORY |
706 PCI_COMMAND_MASTER));
707
708 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 /* TRDY timeout */, 0);
709 P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
710 cpu_to_le32(P54U_DEV_BASE));
711
712 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
713 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
714 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
715
716 /* do romboot */
717 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
718
719 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
720 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
721 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
722 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
723 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
724
725 mdelay(20);
726
727 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
728 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
729
730 mdelay(20);
731
732 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
733 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
734
735 mdelay(100);
736
737 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
738 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
739
740 /* finally, we can upload firmware now! */
741 remains = priv->fw->size;
742 data = priv->fw->data;
743 offset = ISL38XX_DEV_FIRMWARE_ADDR;
744
745 while (remains) {
746 unsigned int block_len = min(remains, (unsigned int)512);
747 memcpy(buf, data, block_len);
748
749 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
750 if (err) {
751 dev_err(&priv->udev->dev, "(p54usb) firmware block "
752 "upload failed\n");
753 goto fail;
754 }
755
756 P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
757 cpu_to_le32(0xc0000f00));
758
759 P54U_WRITE(NET2280_DEV_U32,
760 0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
761 P54U_WRITE(NET2280_DEV_U32,
762 0x0020 | (unsigned long)&devreg->direct_mem_win,
763 cpu_to_le32(1));
764
765 P54U_WRITE(NET2280_DEV_U32,
766 0x0024 | (unsigned long)&devreg->direct_mem_win,
767 cpu_to_le32(block_len));
768 P54U_WRITE(NET2280_DEV_U32,
769 0x0028 | (unsigned long)&devreg->direct_mem_win,
770 cpu_to_le32(offset));
771
772 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
773 cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
774 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
775 cpu_to_le32(block_len >> 2));
776 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
777 cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
778
779 mdelay(10);
780
781 P54U_READ(NET2280_DEV_U32,
782 0x002C | (unsigned long)&devreg->direct_mem_win);
783 if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
784 !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
785 dev_err(&priv->udev->dev, "(p54usb) firmware DMA "
786 "transfer failed\n");
787 goto fail;
788 }
789
790 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
791 cpu_to_le32(NET2280_FIFO_FLUSH));
792
793 remains -= block_len;
794 data += block_len;
795 offset += block_len;
796 }
797
798 /* do ramboot */
799 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
800 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
801 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
802 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
803 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
804
805 mdelay(20);
806
807 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
808 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
809
810 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
811 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
812
813 mdelay(100);
814
815 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
816 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
817
818 /* start up the firmware */
819 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
820 cpu_to_le32(ISL38XX_INT_IDENT_INIT));
821
822 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
823 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
824
825 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
826 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
827 NET2280_USB_INTERRUPT_ENABLE));
828
829 P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
830 cpu_to_le32(ISL38XX_DEV_INT_RESET));
831
832 err = usb_interrupt_msg(priv->udev,
833 usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
834 buf, sizeof(__le32), &alen, 1000);
835 if (err || alen != sizeof(__le32))
836 goto fail;
837
838 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
839 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
840
841 if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
842 err = -EINVAL;
843
844 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
845 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
846 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
847
848#undef P54U_WRITE
849#undef P54U_READ
850
851fail:
852 kfree(buf);
853 return err;
854}
855
856static int p54_find_type(struct p54u_priv *priv)
857{
858 int i;
859
860 for (i = 0; i < __NUM_P54U_HWTYPES; i++)
861 if (p54u_fwlist[i].type == priv->hw_type)
862 break;
863 if (i == __NUM_P54U_HWTYPES)
864 return -EOPNOTSUPP;
865
866 return i;
867}
868
869static int p54u_start_ops(struct p54u_priv *priv)
870{
871 struct ieee80211_hw *dev = priv->common.hw;
872 int ret;
873
874 ret = p54_parse_firmware(dev, priv->fw);
875 if (ret)
876 goto err_out;
877
878 ret = p54_find_type(priv);
879 if (ret < 0)
880 goto err_out;
881
882 if (priv->common.fw_interface != p54u_fwlist[ret].intf) {
883 dev_err(&priv->udev->dev, "wrong firmware, please get "
884 "a firmware for \"%s\" and try again.\n",
885 p54u_fwlist[ret].hw);
886 ret = -ENODEV;
887 goto err_out;
888 }
889
890 ret = priv->upload_fw(dev);
891 if (ret)
892 goto err_out;
893
894 ret = p54u_open(dev);
895 if (ret)
896 goto err_out;
897
898 ret = p54_read_eeprom(dev);
899 if (ret)
900 goto err_stop;
901
902 p54u_stop(dev);
903
904 ret = p54_register_common(dev, &priv->udev->dev);
905 if (ret)
906 goto err_stop;
907
908 return 0;
909
910err_stop:
911 p54u_stop(dev);
912
913err_out:
914 /*
915 * p54u_disconnect will do the rest of the
916 * cleanup
917 */
918 return ret;
919}
920
921static void p54u_load_firmware_cb(const struct firmware *firmware,
922 void *context)
923{
924 struct p54u_priv *priv = context;
925 struct usb_device *udev = priv->udev;
926 int err;
927
928 complete(&priv->fw_wait_load);
929 if (firmware) {
930 priv->fw = firmware;
931 err = p54u_start_ops(priv);
932 } else {
933 err = -ENOENT;
934 dev_err(&udev->dev, "Firmware not found.\n");
935 }
936
937 if (err) {
938 struct device *parent = priv->udev->dev.parent;
939
940 dev_err(&udev->dev, "failed to initialize device (%d)\n", err);
941
942 if (parent)
943 device_lock(parent);
944
945 device_release_driver(&udev->dev);
946 /*
947 * At this point p54u_disconnect has already freed
948 * the "priv" context. Do not use it anymore!
949 */
950 priv = NULL;
951
952 if (parent)
953 device_unlock(parent);
954 }
955
956 usb_put_dev(udev);
957}
958
959static int p54u_load_firmware(struct ieee80211_hw *dev,
960 struct usb_interface *intf)
961{
962 struct usb_device *udev = interface_to_usbdev(intf);
963 struct p54u_priv *priv = dev->priv;
964 struct device *device = &udev->dev;
965 int err, i;
966
967 BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
968
969 init_completion(&priv->fw_wait_load);
970 i = p54_find_type(priv);
971 if (i < 0)
972 return i;
973
974 dev_info(&priv->udev->dev, "Loading firmware file %s\n",
975 p54u_fwlist[i].fw);
976
977 usb_get_dev(udev);
978 err = request_firmware_nowait(THIS_MODULE, 1, p54u_fwlist[i].fw,
979 device, GFP_KERNEL, priv,
980 p54u_load_firmware_cb);
981 if (err) {
982 dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
983 "(%d)!\n", p54u_fwlist[i].fw, err);
984 }
985
986 return err;
987}
988
989static int __devinit p54u_probe(struct usb_interface *intf,
990 const struct usb_device_id *id)
991{
992 struct usb_device *udev = interface_to_usbdev(intf);
993 struct ieee80211_hw *dev;
994 struct p54u_priv *priv;
995 int err;
996 unsigned int i, recognized_pipes;
997
998 dev = p54_init_common(sizeof(*priv));
999
1000 if (!dev) {
1001 dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
1002 return -ENOMEM;
1003 }
1004
1005 priv = dev->priv;
1006 priv->hw_type = P54U_INVALID_HW;
1007
1008 SET_IEEE80211_DEV(dev, &intf->dev);
1009 usb_set_intfdata(intf, dev);
1010 priv->udev = udev;
1011 priv->intf = intf;
1012 skb_queue_head_init(&priv->rx_queue);
1013 init_usb_anchor(&priv->submitted);
1014
1015 usb_get_dev(udev);
1016
1017 /* really lazy and simple way of figuring out if we're a 3887 */
1018 /* TODO: should just stick the identification in the device table */
1019 i = intf->altsetting->desc.bNumEndpoints;
1020 recognized_pipes = 0;
1021 while (i--) {
1022 switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
1023 case P54U_PIPE_DATA:
1024 case P54U_PIPE_MGMT:
1025 case P54U_PIPE_BRG:
1026 case P54U_PIPE_DEV:
1027 case P54U_PIPE_DATA | USB_DIR_IN:
1028 case P54U_PIPE_MGMT | USB_DIR_IN:
1029 case P54U_PIPE_BRG | USB_DIR_IN:
1030 case P54U_PIPE_DEV | USB_DIR_IN:
1031 case P54U_PIPE_INT | USB_DIR_IN:
1032 recognized_pipes++;
1033 }
1034 }
1035 priv->common.open = p54u_open;
1036 priv->common.stop = p54u_stop;
1037 if (recognized_pipes < P54U_PIPE_NUMBER) {
1038#ifdef CONFIG_PM
1039 /* ISL3887 needs a full reset on resume */
1040 udev->reset_resume = 1;
1041#endif /* CONFIG_PM */
1042 err = p54u_device_reset(dev);
1043
1044 priv->hw_type = P54U_3887;
1045 dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
1046 priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
1047 priv->common.tx = p54u_tx_lm87;
1048 priv->upload_fw = p54u_upload_firmware_3887;
1049 } else {
1050 priv->hw_type = P54U_NET2280;
1051 dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
1052 priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
1053 priv->common.tx = p54u_tx_net2280;
1054 priv->upload_fw = p54u_upload_firmware_net2280;
1055 }
1056 err = p54u_load_firmware(dev, intf);
1057 return err;
1058}
1059
1060static void __devexit p54u_disconnect(struct usb_interface *intf)
1061{
1062 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1063 struct p54u_priv *priv;
1064
1065 if (!dev)
1066 return;
1067
1068 priv = dev->priv;
1069 wait_for_completion(&priv->fw_wait_load);
1070 p54_unregister_common(dev);
1071
1072 usb_put_dev(interface_to_usbdev(intf));
1073 release_firmware(priv->fw);
1074 p54_free_common(dev);
1075}
1076
1077static int p54u_pre_reset(struct usb_interface *intf)
1078{
1079 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1080
1081 if (!dev)
1082 return -ENODEV;
1083
1084 p54u_stop(dev);
1085 return 0;
1086}
1087
1088static int p54u_resume(struct usb_interface *intf)
1089{
1090 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1091 struct p54u_priv *priv;
1092
1093 if (!dev)
1094 return -ENODEV;
1095
1096 priv = dev->priv;
1097 if (unlikely(!(priv->upload_fw && priv->fw)))
1098 return 0;
1099
1100 return priv->upload_fw(dev);
1101}
1102
1103static int p54u_post_reset(struct usb_interface *intf)
1104{
1105 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1106 struct p54u_priv *priv;
1107 int err;
1108
1109 err = p54u_resume(intf);
1110 if (err)
1111 return err;
1112
1113 /* reinitialize old device state */
1114 priv = dev->priv;
1115 if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
1116 ieee80211_restart_hw(dev);
1117
1118 return 0;
1119}
1120
1121#ifdef CONFIG_PM
1122
1123static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
1124{
1125 return p54u_pre_reset(intf);
1126}
1127
1128#endif /* CONFIG_PM */
1129
1130static struct usb_driver p54u_driver = {
1131 .name = "p54usb",
1132 .id_table = p54u_table,
1133 .probe = p54u_probe,
1134 .disconnect = __devexit_p(p54u_disconnect),
1135 .pre_reset = p54u_pre_reset,
1136 .post_reset = p54u_post_reset,
1137#ifdef CONFIG_PM
1138 .suspend = p54u_suspend,
1139 .resume = p54u_resume,
1140 .reset_resume = p54u_resume,
1141#endif /* CONFIG_PM */
1142 .soft_unbind = 1,
1143 .disable_hub_initiated_lpm = 1,
1144};
1145
1146module_usb_driver(p54u_driver);