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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/usb.h>
16#include <linux/pci.h>
17#include <linux/slab.h>
18#include <linux/firmware.h>
19#include <linux/etherdevice.h>
20#include <linux/delay.h>
21#include <linux/crc32.h>
22#include <linux/module.h>
23#include <net/mac80211.h>
24
25#include "p54.h"
26#include "lmac.h"
27#include "p54usb.h"
28
29MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
30MODULE_DESCRIPTION("Prism54 USB wireless driver");
31MODULE_LICENSE("GPL");
32MODULE_ALIAS("prism54usb");
33MODULE_FIRMWARE("isl3886usb");
34MODULE_FIRMWARE("isl3887usb");
35
36/*
37 * Note:
38 *
39 * Always update our wiki's device list (located at:
40 * http://wireless.kernel.org/en/users/Drivers/p54/devices ),
41 * whenever you add a new device.
42 */
43
44static struct usb_device_id p54u_table[] = {
45 /* Version 1 devices (pci chip + net2280) */
46 {USB_DEVICE(0x0411, 0x0050)}, /* Buffalo WLI2-USB2-G54 */
47 {USB_DEVICE(0x045e, 0x00c2)}, /* Microsoft MN-710 */
48 {USB_DEVICE(0x0506, 0x0a11)}, /* 3COM 3CRWE254G72 */
49 {USB_DEVICE(0x0675, 0x0530)}, /* DrayTek Vigor 530 */
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(0x07aa, 0x0020)}, /* Corega WLUSB2GTST USB */
86 {USB_DEVICE(0x0803, 0x4310)}, /* Zoom 4410a */
87 {USB_DEVICE(0x083a, 0x4521)}, /* Siemens Gigaset USB Adapter 54 version 2 */
88 {USB_DEVICE(0x083a, 0x4531)}, /* T-Com Sinus 154 data II */
89 {USB_DEVICE(0x083a, 0xc501)}, /* Zoom Wireless-G 4410 */
90 {USB_DEVICE(0x083a, 0xf503)}, /* Accton FD7050E ver 1010ec */
91 {USB_DEVICE(0x0846, 0x4240)}, /* Netgear WG111 (v2) */
92 {USB_DEVICE(0x0915, 0x2000)}, /* Cohiba Proto board */
93 {USB_DEVICE(0x0915, 0x2002)}, /* Cohiba Proto board */
94 {USB_DEVICE(0x0baf, 0x0118)}, /* U.S. Robotics U5 802.11g Adapter*/
95 {USB_DEVICE(0x0bf8, 0x1009)}, /* FUJITSU E-5400 USB D1700*/
96 /* {USB_DEVICE(0x0cde, 0x0006)}, * Medion MD40900 already listed above,
97 * just noting it here for clarity */
98 {USB_DEVICE(0x0cde, 0x0008)}, /* Sagem XG703A */
99 {USB_DEVICE(0x0cde, 0x0015)}, /* Zcomax XG-705A */
100 {USB_DEVICE(0x0d8e, 0x3762)}, /* DLink DWL-G120 Cohiba */
101 {USB_DEVICE(0x124a, 0x4025)}, /* IOGear GWU513 (GW3887IK chip) */
102 {USB_DEVICE(0x1260, 0xee22)}, /* SMC 2862W-G version 2 */
103 {USB_DEVICE(0x13b1, 0x000a)}, /* Linksys WUSB54G ver 2 */
104 {USB_DEVICE(0x13B1, 0x000C)}, /* Linksys WUSB54AG */
105 {USB_DEVICE(0x1413, 0x5400)}, /* Telsey 802.11g USB2.0 Adapter */
106 {USB_DEVICE(0x1435, 0x0427)}, /* Inventel UR054G */
107 /* {USB_DEVICE(0x15a9, 0x0002)}, * Also SparkLAN WL-682 with 3887 */
108 {USB_DEVICE(0x1668, 0x1050)}, /* Actiontec 802UIG-1 */
109 {USB_DEVICE(0x1740, 0x1000)}, /* Senao NUB-350 */
110 {USB_DEVICE(0x2001, 0x3704)}, /* DLink DWL-G122 rev A2 */
111 {USB_DEVICE(0x2001, 0x3705)}, /* D-Link DWL-G120 rev C1 */
112 {USB_DEVICE(0x413c, 0x5513)}, /* Dell WLA3310 USB Wireless Adapter */
113 {USB_DEVICE(0x413c, 0x8102)}, /* Spinnaker DUT */
114 {USB_DEVICE(0x413c, 0x8104)}, /* Cohiba Proto board */
115 {}
116};
117
118MODULE_DEVICE_TABLE(usb, p54u_table);
119
120static const struct {
121 u32 intf;
122 enum p54u_hw_type type;
123 const char *fw;
124 char hw[20];
125} p54u_fwlist[__NUM_P54U_HWTYPES] = {
126 {
127 .type = P54U_NET2280,
128 .intf = FW_LM86,
129 .fw = "isl3886usb",
130 .hw = "ISL3886 + net2280",
131 },
132 {
133 .type = P54U_3887,
134 .intf = FW_LM87,
135 .fw = "isl3887usb",
136 .hw = "ISL3887",
137 },
138};
139
140static void p54u_rx_cb(struct urb *urb)
141{
142 struct sk_buff *skb = (struct sk_buff *) urb->context;
143 struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
144 struct ieee80211_hw *dev = info->dev;
145 struct p54u_priv *priv = dev->priv;
146
147 skb_unlink(skb, &priv->rx_queue);
148
149 if (unlikely(urb->status)) {
150 dev_kfree_skb_irq(skb);
151 return;
152 }
153
154 skb_put(skb, urb->actual_length);
155
156 if (priv->hw_type == P54U_NET2280)
157 skb_pull(skb, priv->common.tx_hdr_len);
158 if (priv->common.fw_interface == FW_LM87) {
159 skb_pull(skb, 4);
160 skb_put(skb, 4);
161 }
162
163 if (p54_rx(dev, skb)) {
164 skb = dev_alloc_skb(priv->common.rx_mtu + 32);
165 if (unlikely(!skb)) {
166 /* TODO check rx queue length and refill *somewhere* */
167 return;
168 }
169
170 info = (struct p54u_rx_info *) skb->cb;
171 info->urb = urb;
172 info->dev = dev;
173 urb->transfer_buffer = skb_tail_pointer(skb);
174 urb->context = skb;
175 } else {
176 if (priv->hw_type == P54U_NET2280)
177 skb_push(skb, priv->common.tx_hdr_len);
178 if (priv->common.fw_interface == FW_LM87) {
179 skb_push(skb, 4);
180 skb_put(skb, 4);
181 }
182 skb_reset_tail_pointer(skb);
183 skb_trim(skb, 0);
184 urb->transfer_buffer = skb_tail_pointer(skb);
185 }
186 skb_queue_tail(&priv->rx_queue, skb);
187 usb_anchor_urb(urb, &priv->submitted);
188 if (usb_submit_urb(urb, GFP_ATOMIC)) {
189 skb_unlink(skb, &priv->rx_queue);
190 usb_unanchor_urb(urb);
191 dev_kfree_skb_irq(skb);
192 }
193}
194
195static void p54u_tx_cb(struct urb *urb)
196{
197 struct sk_buff *skb = urb->context;
198 struct ieee80211_hw *dev =
199 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
200
201 p54_free_skb(dev, skb);
202}
203
204static void p54u_tx_dummy_cb(struct urb *urb) { }
205
206static void p54u_free_urbs(struct ieee80211_hw *dev)
207{
208 struct p54u_priv *priv = dev->priv;
209 usb_kill_anchored_urbs(&priv->submitted);
210}
211
212static void p54u_stop(struct ieee80211_hw *dev)
213{
214 /*
215 * TODO: figure out how to reliably stop the 3887 and net2280 so
216 * the hardware is still usable next time we want to start it.
217 * until then, we just stop listening to the hardware..
218 */
219 p54u_free_urbs(dev);
220}
221
222static int p54u_init_urbs(struct ieee80211_hw *dev)
223{
224 struct p54u_priv *priv = dev->priv;
225 struct urb *entry = NULL;
226 struct sk_buff *skb;
227 struct p54u_rx_info *info;
228 int ret = 0;
229
230 while (skb_queue_len(&priv->rx_queue) < 32) {
231 skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
232 if (!skb) {
233 ret = -ENOMEM;
234 goto err;
235 }
236 entry = usb_alloc_urb(0, GFP_KERNEL);
237 if (!entry) {
238 ret = -ENOMEM;
239 goto err;
240 }
241
242 usb_fill_bulk_urb(entry, priv->udev,
243 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
244 skb_tail_pointer(skb),
245 priv->common.rx_mtu + 32, p54u_rx_cb, skb);
246 info = (struct p54u_rx_info *) skb->cb;
247 info->urb = entry;
248 info->dev = dev;
249 skb_queue_tail(&priv->rx_queue, skb);
250
251 usb_anchor_urb(entry, &priv->submitted);
252 ret = usb_submit_urb(entry, GFP_KERNEL);
253 if (ret) {
254 skb_unlink(skb, &priv->rx_queue);
255 usb_unanchor_urb(entry);
256 goto err;
257 }
258 usb_free_urb(entry);
259 entry = NULL;
260 }
261
262 return 0;
263
264 err:
265 usb_free_urb(entry);
266 kfree_skb(skb);
267 p54u_free_urbs(dev);
268 return ret;
269}
270
271static int p54u_open(struct ieee80211_hw *dev)
272{
273 /*
274 * TODO: Because we don't know how to reliably stop the 3887 and
275 * the isl3886+net2280, other than brutally cut off all
276 * communications. We have to reinitialize the urbs on every start.
277 */
278 return p54u_init_urbs(dev);
279}
280
281static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
282{
283 u32 chk = 0;
284
285 length >>= 2;
286 while (length--) {
287 chk ^= le32_to_cpu(*data++);
288 chk = (chk >> 5) ^ (chk << 3);
289 }
290
291 return cpu_to_le32(chk);
292}
293
294static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
295{
296 struct p54u_priv *priv = dev->priv;
297 struct urb *data_urb;
298 struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
299
300 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
301 if (!data_urb) {
302 p54_free_skb(dev, skb);
303 return;
304 }
305
306 hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
307 hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
308
309 usb_fill_bulk_urb(data_urb, priv->udev,
310 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
311 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
312 p54u_tx_cb : p54u_tx_dummy_cb, skb);
313 data_urb->transfer_flags |= URB_ZERO_PACKET;
314
315 usb_anchor_urb(data_urb, &priv->submitted);
316 if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
317 usb_unanchor_urb(data_urb);
318 p54_free_skb(dev, skb);
319 }
320 usb_free_urb(data_urb);
321}
322
323static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
324{
325 struct p54u_priv *priv = dev->priv;
326 struct urb *int_urb = NULL, *data_urb = NULL;
327 struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
328 struct net2280_reg_write *reg = NULL;
329 int err = -ENOMEM;
330
331 reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
332 if (!reg)
333 goto out;
334
335 int_urb = usb_alloc_urb(0, GFP_ATOMIC);
336 if (!int_urb)
337 goto out;
338
339 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
340 if (!data_urb)
341 goto out;
342
343 reg->port = cpu_to_le16(NET2280_DEV_U32);
344 reg->addr = cpu_to_le32(P54U_DEV_BASE);
345 reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
346
347 memset(hdr, 0, sizeof(*hdr));
348 hdr->len = cpu_to_le16(skb->len);
349 hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
350
351 usb_fill_bulk_urb(int_urb, priv->udev,
352 usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
353 p54u_tx_dummy_cb, dev);
354
355 /*
356 * URB_FREE_BUFFER triggers a code path in the USB subsystem that will
357 * free what is inside the transfer_buffer after the last reference to
358 * the int_urb is dropped.
359 */
360 int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
361 reg = NULL;
362
363 usb_fill_bulk_urb(data_urb, priv->udev,
364 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
365 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
366 p54u_tx_cb : p54u_tx_dummy_cb, skb);
367 data_urb->transfer_flags |= URB_ZERO_PACKET;
368
369 usb_anchor_urb(int_urb, &priv->submitted);
370 err = usb_submit_urb(int_urb, GFP_ATOMIC);
371 if (err) {
372 usb_unanchor_urb(int_urb);
373 goto out;
374 }
375
376 usb_anchor_urb(data_urb, &priv->submitted);
377 err = usb_submit_urb(data_urb, GFP_ATOMIC);
378 if (err) {
379 usb_unanchor_urb(data_urb);
380 goto out;
381 }
382out:
383 usb_free_urb(int_urb);
384 usb_free_urb(data_urb);
385
386 if (err) {
387 kfree(reg);
388 p54_free_skb(dev, skb);
389 }
390}
391
392static int p54u_write(struct p54u_priv *priv,
393 struct net2280_reg_write *buf,
394 enum net2280_op_type type,
395 __le32 addr, __le32 val)
396{
397 unsigned int ep;
398 int alen;
399
400 if (type & 0x0800)
401 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
402 else
403 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
404
405 buf->port = cpu_to_le16(type);
406 buf->addr = addr;
407 buf->val = val;
408
409 return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
410}
411
412static int p54u_read(struct p54u_priv *priv, void *buf,
413 enum net2280_op_type type,
414 __le32 addr, __le32 *val)
415{
416 struct net2280_reg_read *read = buf;
417 __le32 *reg = buf;
418 unsigned int ep;
419 int alen, err;
420
421 if (type & 0x0800)
422 ep = P54U_PIPE_DEV;
423 else
424 ep = P54U_PIPE_BRG;
425
426 read->port = cpu_to_le16(type);
427 read->addr = addr;
428
429 err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
430 read, sizeof(*read), &alen, 1000);
431 if (err)
432 return err;
433
434 err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
435 reg, sizeof(*reg), &alen, 1000);
436 if (err)
437 return err;
438
439 *val = *reg;
440 return 0;
441}
442
443static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
444 void *data, size_t len)
445{
446 int alen;
447 return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
448 data, len, &alen, 2000);
449}
450
451static int p54u_device_reset(struct ieee80211_hw *dev)
452{
453 struct p54u_priv *priv = dev->priv;
454 int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
455
456 if (lock) {
457 ret = usb_lock_device_for_reset(priv->udev, priv->intf);
458 if (ret < 0) {
459 dev_err(&priv->udev->dev, "(p54usb) unable to lock "
460 "device for reset (%d)!\n", ret);
461 return ret;
462 }
463 }
464
465 ret = usb_reset_device(priv->udev);
466 if (lock)
467 usb_unlock_device(priv->udev);
468
469 if (ret)
470 dev_err(&priv->udev->dev, "(p54usb) unable to reset "
471 "device (%d)!\n", ret);
472
473 return ret;
474}
475
476static const char p54u_romboot_3887[] = "~~~~";
477static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
478{
479 struct p54u_priv *priv = dev->priv;
480 u8 *buf;
481 int ret;
482
483 buf = kmemdup(p54u_romboot_3887, 4, GFP_KERNEL);
484 if (!buf)
485 return -ENOMEM;
486 ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
487 buf, 4);
488 kfree(buf);
489 if (ret)
490 dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
491 "boot ROM (%d)!\n", ret);
492
493 return ret;
494}
495
496static const char p54u_firmware_upload_3887[] = "<\r";
497static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
498{
499 struct p54u_priv *priv = dev->priv;
500 int err, alen;
501 u8 carry = 0;
502 u8 *buf, *tmp;
503 const u8 *data;
504 unsigned int left, remains, block_size;
505 struct x2_header *hdr;
506 unsigned long timeout;
507
508 err = p54u_firmware_reset_3887(dev);
509 if (err)
510 return err;
511
512 tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
513 if (!buf)
514 return -ENOMEM;
515
516 left = block_size = min_t(size_t, P54U_FW_BLOCK, priv->fw->size);
517 strcpy(buf, p54u_firmware_upload_3887);
518 left -= strlen(p54u_firmware_upload_3887);
519 tmp += strlen(p54u_firmware_upload_3887);
520
521 data = priv->fw->data;
522 remains = priv->fw->size;
523
524 hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
525 memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
526 hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
527 hdr->fw_length = cpu_to_le32(priv->fw->size);
528 hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
529 sizeof(u32)*2));
530 left -= sizeof(*hdr);
531 tmp += sizeof(*hdr);
532
533 while (remains) {
534 while (left--) {
535 if (carry) {
536 *tmp++ = carry;
537 carry = 0;
538 remains--;
539 continue;
540 }
541 switch (*data) {
542 case '~':
543 *tmp++ = '}';
544 carry = '^';
545 break;
546 case '}':
547 *tmp++ = '}';
548 carry = ']';
549 break;
550 default:
551 *tmp++ = *data;
552 remains--;
553 break;
554 }
555 data++;
556 }
557
558 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
559 if (err) {
560 dev_err(&priv->udev->dev, "(p54usb) firmware "
561 "upload failed!\n");
562 goto err_upload_failed;
563 }
564
565 tmp = buf;
566 left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
567 }
568
569 *((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, priv->fw->data,
570 priv->fw->size));
571 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
572 if (err) {
573 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
574 goto err_upload_failed;
575 }
576 timeout = jiffies + msecs_to_jiffies(1000);
577 while (!(err = usb_bulk_msg(priv->udev,
578 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
579 if (alen > 2 && !memcmp(buf, "OK", 2))
580 break;
581
582 if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
583 err = -EINVAL;
584 break;
585 }
586
587 if (time_after(jiffies, timeout)) {
588 dev_err(&priv->udev->dev, "(p54usb) firmware boot "
589 "timed out!\n");
590 err = -ETIMEDOUT;
591 break;
592 }
593 }
594 if (err) {
595 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
596 goto err_upload_failed;
597 }
598
599 buf[0] = 'g';
600 buf[1] = '\r';
601 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
602 if (err) {
603 dev_err(&priv->udev->dev, "(p54usb) firmware boot failed!\n");
604 goto err_upload_failed;
605 }
606
607 timeout = jiffies + msecs_to_jiffies(1000);
608 while (!(err = usb_bulk_msg(priv->udev,
609 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
610 if (alen > 0 && buf[0] == 'g')
611 break;
612
613 if (time_after(jiffies, timeout)) {
614 err = -ETIMEDOUT;
615 break;
616 }
617 }
618 if (err)
619 goto err_upload_failed;
620
621err_upload_failed:
622 kfree(buf);
623 return err;
624}
625
626static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
627{
628 struct p54u_priv *priv = dev->priv;
629 const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
630 int err, alen;
631 void *buf;
632 __le32 reg;
633 unsigned int remains, offset;
634 const u8 *data;
635
636 buf = kmalloc(512, GFP_KERNEL);
637 if (!buf)
638 return -ENOMEM;
639
640#define P54U_WRITE(type, addr, data) \
641 do {\
642 err = p54u_write(priv, buf, type,\
643 cpu_to_le32((u32)(unsigned long)addr), data);\
644 if (err) \
645 goto fail;\
646 } while (0)
647
648#define P54U_READ(type, addr) \
649 do {\
650 err = p54u_read(priv, buf, type,\
651 cpu_to_le32((u32)(unsigned long)addr), ®);\
652 if (err)\
653 goto fail;\
654 } while (0)
655
656 /* power down net2280 bridge */
657 P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
658 reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
659 reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
660 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
661
662 mdelay(100);
663
664 /* power up bridge */
665 reg |= cpu_to_le32(P54U_BRG_POWER_UP);
666 reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
667 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
668
669 mdelay(100);
670
671 P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
672 cpu_to_le32(NET2280_CLK_30Mhz |
673 NET2280_PCI_ENABLE |
674 NET2280_PCI_SOFT_RESET));
675
676 mdelay(20);
677
678 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
679 cpu_to_le32(PCI_COMMAND_MEMORY |
680 PCI_COMMAND_MASTER));
681
682 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
683 cpu_to_le32(NET2280_BASE));
684
685 P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
686 reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
687 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
688
689 // TODO: we really need this?
690 P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
691
692 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
693 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
694 P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
695 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
696
697 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
698 cpu_to_le32(NET2280_BASE2));
699
700 /* finally done setting up the bridge */
701
702 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
703 cpu_to_le32(PCI_COMMAND_MEMORY |
704 PCI_COMMAND_MASTER));
705
706 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 /* TRDY timeout */, 0);
707 P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
708 cpu_to_le32(P54U_DEV_BASE));
709
710 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
711 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
712 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
713
714 /* do romboot */
715 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
716
717 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
718 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
719 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
720 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
721 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
722
723 mdelay(20);
724
725 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
726 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
727
728 mdelay(20);
729
730 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
731 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
732
733 mdelay(100);
734
735 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
736 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
737
738 /* finally, we can upload firmware now! */
739 remains = priv->fw->size;
740 data = priv->fw->data;
741 offset = ISL38XX_DEV_FIRMWARE_ADDR;
742
743 while (remains) {
744 unsigned int block_len = min(remains, (unsigned int)512);
745 memcpy(buf, data, block_len);
746
747 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
748 if (err) {
749 dev_err(&priv->udev->dev, "(p54usb) firmware block "
750 "upload failed\n");
751 goto fail;
752 }
753
754 P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
755 cpu_to_le32(0xc0000f00));
756
757 P54U_WRITE(NET2280_DEV_U32,
758 0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
759 P54U_WRITE(NET2280_DEV_U32,
760 0x0020 | (unsigned long)&devreg->direct_mem_win,
761 cpu_to_le32(1));
762
763 P54U_WRITE(NET2280_DEV_U32,
764 0x0024 | (unsigned long)&devreg->direct_mem_win,
765 cpu_to_le32(block_len));
766 P54U_WRITE(NET2280_DEV_U32,
767 0x0028 | (unsigned long)&devreg->direct_mem_win,
768 cpu_to_le32(offset));
769
770 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
771 cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
772 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
773 cpu_to_le32(block_len >> 2));
774 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
775 cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
776
777 mdelay(10);
778
779 P54U_READ(NET2280_DEV_U32,
780 0x002C | (unsigned long)&devreg->direct_mem_win);
781 if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
782 !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
783 dev_err(&priv->udev->dev, "(p54usb) firmware DMA "
784 "transfer failed\n");
785 goto fail;
786 }
787
788 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
789 cpu_to_le32(NET2280_FIFO_FLUSH));
790
791 remains -= block_len;
792 data += block_len;
793 offset += block_len;
794 }
795
796 /* do ramboot */
797 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
798 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
799 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
800 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
801 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
802
803 mdelay(20);
804
805 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
806 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
807
808 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
809 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
810
811 mdelay(100);
812
813 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
814 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
815
816 /* start up the firmware */
817 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
818 cpu_to_le32(ISL38XX_INT_IDENT_INIT));
819
820 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
821 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
822
823 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
824 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
825 NET2280_USB_INTERRUPT_ENABLE));
826
827 P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
828 cpu_to_le32(ISL38XX_DEV_INT_RESET));
829
830 err = usb_interrupt_msg(priv->udev,
831 usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
832 buf, sizeof(__le32), &alen, 1000);
833 if (err || alen != sizeof(__le32))
834 goto fail;
835
836 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
837 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
838
839 if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
840 err = -EINVAL;
841
842 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
843 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
844 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
845
846#undef P54U_WRITE
847#undef P54U_READ
848
849fail:
850 kfree(buf);
851 return err;
852}
853
854static int p54_find_type(struct p54u_priv *priv)
855{
856 int i;
857
858 for (i = 0; i < __NUM_P54U_HWTYPES; i++)
859 if (p54u_fwlist[i].type == priv->hw_type)
860 break;
861 if (i == __NUM_P54U_HWTYPES)
862 return -EOPNOTSUPP;
863
864 return i;
865}
866
867static int p54u_start_ops(struct p54u_priv *priv)
868{
869 struct ieee80211_hw *dev = priv->common.hw;
870 int ret;
871
872 ret = p54_parse_firmware(dev, priv->fw);
873 if (ret)
874 goto err_out;
875
876 ret = p54_find_type(priv);
877 if (ret < 0)
878 goto err_out;
879
880 if (priv->common.fw_interface != p54u_fwlist[ret].intf) {
881 dev_err(&priv->udev->dev, "wrong firmware, please get "
882 "a firmware for \"%s\" and try again.\n",
883 p54u_fwlist[ret].hw);
884 ret = -ENODEV;
885 goto err_out;
886 }
887
888 ret = priv->upload_fw(dev);
889 if (ret)
890 goto err_out;
891
892 ret = p54u_open(dev);
893 if (ret)
894 goto err_out;
895
896 ret = p54_read_eeprom(dev);
897 if (ret)
898 goto err_stop;
899
900 p54u_stop(dev);
901
902 ret = p54_register_common(dev, &priv->udev->dev);
903 if (ret)
904 goto err_stop;
905
906 return 0;
907
908err_stop:
909 p54u_stop(dev);
910
911err_out:
912 /*
913 * p54u_disconnect will do the rest of the
914 * cleanup
915 */
916 return ret;
917}
918
919static void p54u_load_firmware_cb(const struct firmware *firmware,
920 void *context)
921{
922 struct p54u_priv *priv = context;
923 struct usb_device *udev = priv->udev;
924 int err;
925
926 complete(&priv->fw_wait_load);
927 if (firmware) {
928 priv->fw = firmware;
929 err = p54u_start_ops(priv);
930 } else {
931 err = -ENOENT;
932 dev_err(&udev->dev, "Firmware not found.\n");
933 }
934
935 if (err) {
936 struct device *parent = priv->udev->dev.parent;
937
938 dev_err(&udev->dev, "failed to initialize device (%d)\n", err);
939
940 if (parent)
941 device_lock(parent);
942
943 device_release_driver(&udev->dev);
944 /*
945 * At this point p54u_disconnect has already freed
946 * the "priv" context. Do not use it anymore!
947 */
948 priv = NULL;
949
950 if (parent)
951 device_unlock(parent);
952 }
953
954 usb_put_dev(udev);
955}
956
957static int p54u_load_firmware(struct ieee80211_hw *dev,
958 struct usb_interface *intf)
959{
960 struct usb_device *udev = interface_to_usbdev(intf);
961 struct p54u_priv *priv = dev->priv;
962 struct device *device = &udev->dev;
963 int err, i;
964
965 BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
966
967 init_completion(&priv->fw_wait_load);
968 i = p54_find_type(priv);
969 if (i < 0)
970 return i;
971
972 dev_info(&priv->udev->dev, "Loading firmware file %s\n",
973 p54u_fwlist[i].fw);
974
975 usb_get_dev(udev);
976 err = request_firmware_nowait(THIS_MODULE, 1, p54u_fwlist[i].fw,
977 device, GFP_KERNEL, priv,
978 p54u_load_firmware_cb);
979 if (err) {
980 dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
981 "(%d)!\n", p54u_fwlist[i].fw, err);
982 usb_put_dev(udev);
983 }
984
985 return err;
986}
987
988static int p54u_probe(struct usb_interface *intf,
989 const struct usb_device_id *id)
990{
991 struct usb_device *udev = interface_to_usbdev(intf);
992 struct ieee80211_hw *dev;
993 struct p54u_priv *priv;
994 int err;
995 unsigned int i, recognized_pipes;
996
997 dev = p54_init_common(sizeof(*priv));
998
999 if (!dev) {
1000 dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
1001 return -ENOMEM;
1002 }
1003
1004 priv = dev->priv;
1005 priv->hw_type = P54U_INVALID_HW;
1006
1007 SET_IEEE80211_DEV(dev, &intf->dev);
1008 usb_set_intfdata(intf, dev);
1009 priv->udev = udev;
1010 priv->intf = intf;
1011 skb_queue_head_init(&priv->rx_queue);
1012 init_usb_anchor(&priv->submitted);
1013
1014 usb_get_dev(udev);
1015
1016 /* really lazy and simple way of figuring out if we're a 3887 */
1017 /* TODO: should just stick the identification in the device table */
1018 i = intf->altsetting->desc.bNumEndpoints;
1019 recognized_pipes = 0;
1020 while (i--) {
1021 switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
1022 case P54U_PIPE_DATA:
1023 case P54U_PIPE_MGMT:
1024 case P54U_PIPE_BRG:
1025 case P54U_PIPE_DEV:
1026 case P54U_PIPE_DATA | USB_DIR_IN:
1027 case P54U_PIPE_MGMT | USB_DIR_IN:
1028 case P54U_PIPE_BRG | USB_DIR_IN:
1029 case P54U_PIPE_DEV | USB_DIR_IN:
1030 case P54U_PIPE_INT | USB_DIR_IN:
1031 recognized_pipes++;
1032 }
1033 }
1034 priv->common.open = p54u_open;
1035 priv->common.stop = p54u_stop;
1036 if (recognized_pipes < P54U_PIPE_NUMBER) {
1037#ifdef CONFIG_PM
1038 /* ISL3887 needs a full reset on resume */
1039 udev->reset_resume = 1;
1040#endif /* CONFIG_PM */
1041 err = p54u_device_reset(dev);
1042
1043 priv->hw_type = P54U_3887;
1044 dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
1045 priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
1046 priv->common.tx = p54u_tx_lm87;
1047 priv->upload_fw = p54u_upload_firmware_3887;
1048 } else {
1049 priv->hw_type = P54U_NET2280;
1050 dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
1051 priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
1052 priv->common.tx = p54u_tx_net2280;
1053 priv->upload_fw = p54u_upload_firmware_net2280;
1054 }
1055 err = p54u_load_firmware(dev, intf);
1056 if (err) {
1057 usb_put_dev(udev);
1058 p54_free_common(dev);
1059 }
1060 return err;
1061}
1062
1063static void p54u_disconnect(struct usb_interface *intf)
1064{
1065 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1066 struct p54u_priv *priv;
1067
1068 if (!dev)
1069 return;
1070
1071 priv = dev->priv;
1072 wait_for_completion(&priv->fw_wait_load);
1073 p54_unregister_common(dev);
1074
1075 usb_put_dev(interface_to_usbdev(intf));
1076 release_firmware(priv->fw);
1077 p54_free_common(dev);
1078}
1079
1080static int p54u_pre_reset(struct usb_interface *intf)
1081{
1082 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1083
1084 if (!dev)
1085 return -ENODEV;
1086
1087 p54u_stop(dev);
1088 return 0;
1089}
1090
1091static int p54u_resume(struct usb_interface *intf)
1092{
1093 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1094 struct p54u_priv *priv;
1095
1096 if (!dev)
1097 return -ENODEV;
1098
1099 priv = dev->priv;
1100 if (unlikely(!(priv->upload_fw && priv->fw)))
1101 return 0;
1102
1103 return priv->upload_fw(dev);
1104}
1105
1106static int p54u_post_reset(struct usb_interface *intf)
1107{
1108 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1109 struct p54u_priv *priv;
1110 int err;
1111
1112 err = p54u_resume(intf);
1113 if (err)
1114 return err;
1115
1116 /* reinitialize old device state */
1117 priv = dev->priv;
1118 if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
1119 ieee80211_restart_hw(dev);
1120
1121 return 0;
1122}
1123
1124#ifdef CONFIG_PM
1125
1126static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
1127{
1128 return p54u_pre_reset(intf);
1129}
1130
1131#endif /* CONFIG_PM */
1132
1133static struct usb_driver p54u_driver = {
1134 .name = "p54usb",
1135 .id_table = p54u_table,
1136 .probe = p54u_probe,
1137 .disconnect = p54u_disconnect,
1138 .pre_reset = p54u_pre_reset,
1139 .post_reset = p54u_post_reset,
1140#ifdef CONFIG_PM
1141 .suspend = p54u_suspend,
1142 .resume = p54u_resume,
1143 .reset_resume = p54u_resume,
1144#endif /* CONFIG_PM */
1145 .soft_unbind = 1,
1146 .disable_hub_initiated_lpm = 1,
1147};
1148
1149module_usb_driver(p54u_driver);