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ar5523: Add new driver
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / ath / ar5523 / ar5523.c
1 /*
2 * Copyright (c) 2006 Damien Bergamini <damien.bergamini@free.fr>
3 * Copyright (c) 2006 Sam Leffler, Errno Consulting
4 * Copyright (c) 2007 Christoph Hellwig <hch@lst.de>
5 * Copyright (c) 2008-2009 Weongyo Jeong <weongyo@freebsd.org>
6 * Copyright (c) 2012 Pontus Fuchs <pontus.fuchs@gmail.com>
7 *
8 * Permission to use, copy, modify, and/or distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 */
20
21 /*
22 * This driver is based on the uath driver written by Damien Bergamini for
23 * OpenBSD, who did black-box analysis of the Windows binary driver to find
24 * out how the hardware works. It contains a lot magic numbers because of
25 * that and only has minimal functionality.
26 */
27 #include <linux/compiler.h>
28 #include <linux/init.h>
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/list.h>
32 #include <linux/completion.h>
33 #include <linux/firmware.h>
34 #include <linux/skbuff.h>
35 #include <linux/usb.h>
36 #include <net/mac80211.h>
37
38 #include "ar5523.h"
39 #include "ar5523_hw.h"
40
41 /*
42 * Various supported device vendors/products.
43 * UB51: AR5005UG 802.11b/g, UB52: AR5005UX 802.11a/b/g
44 */
45
46 static int ar5523_submit_rx_cmd(struct ar5523 *ar);
47 static void ar5523_data_tx_pkt_put(struct ar5523 *ar);
48
49 static void ar5523_read_reply(struct ar5523 *ar, struct ar5523_cmd_hdr *hdr,
50 struct ar5523_tx_cmd *cmd)
51 {
52 int dlen, olen;
53 u32 *rp;
54
55 dlen = hdr->len - sizeof(*hdr);
56
57 if (dlen < 0) {
58 WARN_ON(1);
59 goto out;
60 }
61
62 ar5523_dbg(ar, "Code = %d len = %d\n", hdr->code & 0xff, dlen);
63
64 rp = (u32 *)(hdr + 1);
65 if (dlen >= sizeof(u32)) {
66 olen = be32_to_cpu(rp[0]);
67 dlen -= sizeof(u32);
68 if (olen == 0) {
69 /* convention is 0 =>'s one word */
70 olen = sizeof(u32);
71 }
72 } else
73 olen = 0;
74
75 if (cmd->odata) {
76 if (cmd->olen < olen) {
77 ar5523_err(ar, "olen to small %d < %d\n",
78 cmd->olen, olen);
79 cmd->olen = 0;
80 cmd->res = -EOVERFLOW;
81 } else {
82 cmd->olen = olen;
83 memcpy(cmd->odata, &rp[1], olen);
84 cmd->res = 0;
85 }
86 }
87
88 out:
89 complete(&cmd->done);
90 }
91
92 static void ar5523_cmd_rx_cb(struct urb *urb)
93 {
94 struct ar5523 *ar = urb->context;
95 struct ar5523_tx_cmd *cmd = &ar->tx_cmd;
96 struct ar5523_cmd_hdr *hdr = ar->rx_cmd_buf;
97 int dlen;
98
99 if (urb->status) {
100 if (urb->status != -ESHUTDOWN)
101 ar5523_err(ar, "RX USB error %d.\n", urb->status);
102 goto skip;
103 }
104
105 if (urb->actual_length < sizeof(struct ar5523_cmd_hdr)) {
106 ar5523_err(ar, "RX USB to short.\n");
107 goto skip;
108 }
109
110 ar5523_dbg(ar, "%s code %02x priv %d\n", __func__,
111 be32_to_cpu(hdr->code) & 0xff, hdr->priv);
112
113 hdr->code = be32_to_cpu(hdr->code);
114 hdr->len = be32_to_cpu(hdr->len);
115
116 switch (hdr->code & 0xff) {
117 default:
118 /* reply to a read command */
119 if (hdr->priv != AR5523_CMD_ID) {
120 ar5523_err(ar, "Unexpected command id: %02x\n",
121 hdr->code & 0xff);
122 goto skip;
123 }
124 ar5523_read_reply(ar, hdr, cmd);
125 break;
126
127 case WDCMSG_DEVICE_AVAIL:
128 ar5523_dbg(ar, "WDCMSG_DEVICE_AVAIL\n");
129 cmd->res = 0;
130 cmd->olen = 0;
131 complete(&cmd->done);
132 break;
133
134 case WDCMSG_SEND_COMPLETE:
135 ar5523_dbg(ar, "WDCMSG_SEND_COMPLETE: %d pending\n",
136 atomic_read(&ar->tx_nr_pending));
137 if (!test_bit(AR5523_HW_UP, &ar->flags))
138 ar5523_dbg(ar, "Unexpected WDCMSG_SEND_COMPLETE\n");
139 else {
140 mod_timer(&ar->tx_wd_timer,
141 jiffies + AR5523_TX_WD_TIMEOUT);
142 ar5523_data_tx_pkt_put(ar);
143
144 }
145 break;
146
147 case WDCMSG_TARGET_START:
148 /* This command returns a bogus id so it needs special
149 handling */
150 dlen = hdr->len - sizeof(*hdr);
151 if (dlen != (int)sizeof(u32)) {
152 ar5523_err(ar, "Invalid reply to WDCMSG_TARGET_START");
153 return;
154 }
155 memcpy(cmd->odata, hdr + 1, sizeof(u32));
156 cmd->olen = sizeof(u32);
157 cmd->res = 0;
158 complete(&cmd->done);
159 break;
160
161 case WDCMSG_STATS_UPDATE:
162 ar5523_dbg(ar, "WDCMSG_STATS_UPDATE\n");
163 break;
164 }
165
166 skip:
167 ar5523_submit_rx_cmd(ar);
168 }
169
170 static int ar5523_alloc_rx_cmd(struct ar5523 *ar)
171 {
172 ar->rx_cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
173 if (!ar->rx_cmd_urb)
174 return -ENOMEM;
175
176 ar->rx_cmd_buf = usb_alloc_coherent(ar->dev, AR5523_MAX_RXCMDSZ,
177 GFP_KERNEL,
178 &ar->rx_cmd_urb->transfer_dma);
179 if (!ar->rx_cmd_buf) {
180 usb_free_urb(ar->rx_cmd_urb);
181 return -ENOMEM;
182 }
183 return 0;
184 }
185
186 static void ar5523_cancel_rx_cmd(struct ar5523 *ar)
187 {
188 usb_kill_urb(ar->rx_cmd_urb);
189 }
190
191 static void ar5523_free_rx_cmd(struct ar5523 *ar)
192 {
193 usb_free_coherent(ar->dev, AR5523_MAX_RXCMDSZ,
194 ar->rx_cmd_buf, ar->rx_cmd_urb->transfer_dma);
195 usb_free_urb(ar->rx_cmd_urb);
196 }
197
198 static int ar5523_submit_rx_cmd(struct ar5523 *ar)
199 {
200 int error;
201
202 usb_fill_bulk_urb(ar->rx_cmd_urb, ar->dev,
203 ar5523_cmd_rx_pipe(ar->dev), ar->rx_cmd_buf,
204 AR5523_MAX_RXCMDSZ, ar5523_cmd_rx_cb, ar);
205 ar->rx_cmd_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
206
207 error = usb_submit_urb(ar->rx_cmd_urb, GFP_ATOMIC);
208 if (error) {
209 if (error != -ENODEV)
210 ar5523_err(ar, "error %d when submitting rx urb\n",
211 error);
212 return error;
213 }
214 return 0;
215 }
216
217 /*
218 * Command submitted cb
219 */
220 static void ar5523_cmd_tx_cb(struct urb *urb)
221 {
222 struct ar5523_tx_cmd *cmd = urb->context;
223 struct ar5523 *ar = cmd->ar;
224
225 if (urb->status) {
226 ar5523_err(ar, "Failed to TX command. Status = %d\n",
227 urb->status);
228 cmd->res = urb->status;
229 complete(&cmd->done);
230 return;
231 }
232
233 if (!(cmd->flags & AR5523_CMD_FLAG_READ)) {
234 cmd->res = 0;
235 complete(&cmd->done);
236 }
237 }
238
239 static int ar5523_cmd(struct ar5523 *ar, u32 code, const void *idata,
240 int ilen, void *odata, int olen, int flags)
241 {
242 struct ar5523_cmd_hdr *hdr;
243 struct ar5523_tx_cmd *cmd = &ar->tx_cmd;
244 int xferlen, error;
245
246 /* always bulk-out a multiple of 4 bytes */
247 xferlen = (sizeof(struct ar5523_cmd_hdr) + ilen + 3) & ~3;
248
249 hdr = (struct ar5523_cmd_hdr *)cmd->buf_tx;
250 memset(hdr, 0, sizeof(struct ar5523_cmd_hdr));
251 hdr->len = cpu_to_be32(xferlen);
252 hdr->code = cpu_to_be32(code);
253 hdr->priv = AR5523_CMD_ID;
254
255 if (flags & AR5523_CMD_FLAG_MAGIC)
256 hdr->magic = cpu_to_be32(1 << 24);
257 memcpy(hdr + 1, idata, ilen);
258
259 cmd->odata = odata;
260 cmd->olen = olen;
261 cmd->flags = flags;
262
263 ar5523_dbg(ar, "do cmd %02x\n", code);
264
265 usb_fill_bulk_urb(cmd->urb_tx, ar->dev, ar5523_cmd_tx_pipe(ar->dev),
266 cmd->buf_tx, xferlen, ar5523_cmd_tx_cb, cmd);
267 cmd->urb_tx->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
268
269 error = usb_submit_urb(cmd->urb_tx, GFP_KERNEL);
270 if (error) {
271 ar5523_err(ar, "could not send command 0x%x, error=%d\n",
272 code, error);
273 return error;
274 }
275
276 if (!wait_for_completion_timeout(&cmd->done, 2 * HZ)) {
277 cmd->odata = NULL;
278 ar5523_err(ar, "timeout waiting for command %02x reply\n",
279 code);
280 cmd->res = -ETIMEDOUT;
281 }
282 return cmd->res;
283 }
284
285 static int ar5523_cmd_write(struct ar5523 *ar, u32 code, const void *data,
286 int len, int flags)
287 {
288 flags &= ~AR5523_CMD_FLAG_READ;
289 return ar5523_cmd(ar, code, data, len, NULL, 0, flags);
290 }
291
292 static int ar5523_cmd_read(struct ar5523 *ar, u32 code, const void *idata,
293 int ilen, void *odata, int olen, int flags)
294 {
295 flags |= AR5523_CMD_FLAG_READ;
296 return ar5523_cmd(ar, code, idata, ilen, odata, olen, flags);
297 }
298
299 static int ar5523_config(struct ar5523 *ar, u32 reg, u32 val)
300 {
301 struct ar5523_write_mac write;
302 int error;
303
304 write.reg = cpu_to_be32(reg);
305 write.len = cpu_to_be32(0); /* 0 = single write */
306 *(u32 *)write.data = cpu_to_be32(val);
307
308 error = ar5523_cmd_write(ar, WDCMSG_TARGET_SET_CONFIG, &write,
309 3 * sizeof(u32), 0);
310 if (error != 0)
311 ar5523_err(ar, "could not write register 0x%02x\n", reg);
312 return error;
313 }
314
315 static int ar5523_config_multi(struct ar5523 *ar, u32 reg, const void *data,
316 int len)
317 {
318 struct ar5523_write_mac write;
319 int error;
320
321 write.reg = cpu_to_be32(reg);
322 write.len = cpu_to_be32(len);
323 memcpy(write.data, data, len);
324
325 /* properly handle the case where len is zero (reset) */
326 error = ar5523_cmd_write(ar, WDCMSG_TARGET_SET_CONFIG, &write,
327 (len == 0) ? sizeof(u32) : 2 * sizeof(u32) + len, 0);
328 if (error != 0)
329 ar5523_err(ar, "could not write %d bytes to register 0x%02x\n",
330 len, reg);
331 return error;
332 }
333
334 static int ar5523_get_status(struct ar5523 *ar, u32 which, void *odata,
335 int olen)
336 {
337 int error;
338
339 which = cpu_to_be32(which);
340 error = ar5523_cmd_read(ar, WDCMSG_TARGET_GET_STATUS,
341 &which, sizeof(which), odata, olen, AR5523_CMD_FLAG_MAGIC);
342 if (error != 0)
343 ar5523_err(ar, "could not read EEPROM offset 0x%02x\n",
344 be32_to_cpu(which));
345 return error;
346 }
347
348 static int ar5523_get_capability(struct ar5523 *ar, u32 cap, u32 *val)
349 {
350 int error;
351
352 cap = cpu_to_be32(cap);
353 error = ar5523_cmd_read(ar, WDCMSG_TARGET_GET_CAPABILITY,
354 &cap, sizeof(cap), val, sizeof(u32), AR5523_CMD_FLAG_MAGIC);
355 if (error != 0) {
356 ar5523_err(ar, "could not read capability %u\n",
357 be32_to_cpu(cap));
358 return error;
359 }
360 *val = be32_to_cpu(*val);
361 return error;
362 }
363
364 static int ar5523_get_devcap(struct ar5523 *ar)
365 {
366 #define GETCAP(x) do { \
367 error = ar5523_get_capability(ar, x, &cap); \
368 if (error != 0) \
369 return error; \
370 ar5523_info(ar, "Cap: " \
371 "%s=0x%08x\n", #x, cap); \
372 } while (0)
373 int error;
374 u32 cap;
375
376 /* collect device capabilities */
377 GETCAP(CAP_TARGET_VERSION);
378 GETCAP(CAP_TARGET_REVISION);
379 GETCAP(CAP_MAC_VERSION);
380 GETCAP(CAP_MAC_REVISION);
381 GETCAP(CAP_PHY_REVISION);
382 GETCAP(CAP_ANALOG_5GHz_REVISION);
383 GETCAP(CAP_ANALOG_2GHz_REVISION);
384
385 GETCAP(CAP_REG_DOMAIN);
386 GETCAP(CAP_REG_CAP_BITS);
387 GETCAP(CAP_WIRELESS_MODES);
388 GETCAP(CAP_CHAN_SPREAD_SUPPORT);
389 GETCAP(CAP_COMPRESS_SUPPORT);
390 GETCAP(CAP_BURST_SUPPORT);
391 GETCAP(CAP_FAST_FRAMES_SUPPORT);
392 GETCAP(CAP_CHAP_TUNING_SUPPORT);
393 GETCAP(CAP_TURBOG_SUPPORT);
394 GETCAP(CAP_TURBO_PRIME_SUPPORT);
395 GETCAP(CAP_DEVICE_TYPE);
396 GETCAP(CAP_WME_SUPPORT);
397 GETCAP(CAP_TOTAL_QUEUES);
398 GETCAP(CAP_CONNECTION_ID_MAX);
399
400 GETCAP(CAP_LOW_5GHZ_CHAN);
401 GETCAP(CAP_HIGH_5GHZ_CHAN);
402 GETCAP(CAP_LOW_2GHZ_CHAN);
403 GETCAP(CAP_HIGH_2GHZ_CHAN);
404 GETCAP(CAP_TWICE_ANTENNAGAIN_5G);
405 GETCAP(CAP_TWICE_ANTENNAGAIN_2G);
406
407 GETCAP(CAP_CIPHER_AES_CCM);
408 GETCAP(CAP_CIPHER_TKIP);
409 GETCAP(CAP_MIC_TKIP);
410 return 0;
411 }
412
413 static int ar5523_set_ledsteady(struct ar5523 *ar, int lednum, int ledmode)
414 {
415 struct ar5523_cmd_ledsteady led;
416
417 led.lednum = cpu_to_be32(lednum);
418 led.ledmode = cpu_to_be32(ledmode);
419
420 ar5523_dbg(ar, "set %s led %s (steady)\n",
421 (lednum == UATH_LED_LINK) ? "link" : "activity",
422 ledmode ? "on" : "off");
423 return ar5523_cmd_write(ar, WDCMSG_SET_LED_STEADY, &led, sizeof(led),
424 0);
425 }
426
427 static int ar5523_set_rxfilter(struct ar5523 *ar, u32 bits, u32 op)
428 {
429 struct ar5523_cmd_rx_filter rxfilter;
430
431 rxfilter.bits = cpu_to_be32(bits);
432 rxfilter.op = cpu_to_be32(op);
433
434 ar5523_dbg(ar, "setting Rx filter=0x%x flags=0x%x\n", bits, op);
435 return ar5523_cmd_write(ar, WDCMSG_RX_FILTER, &rxfilter,
436 sizeof(rxfilter), 0);
437 }
438
439 static int ar5523_reset_tx_queues(struct ar5523 *ar)
440 {
441 __be32 qid = cpu_to_be32(0);
442
443 ar5523_dbg(ar, "resetting Tx queue\n");
444 return ar5523_cmd_write(ar, WDCMSG_RELEASE_TX_QUEUE,
445 &qid, sizeof(qid), 0);
446 }
447
448 static int ar5523_set_chan(struct ar5523 *ar)
449 {
450 struct ieee80211_conf *conf = &ar->hw->conf;
451
452 struct ar5523_cmd_reset reset;
453
454 memset(&reset, 0, sizeof(reset));
455 reset.flags |= cpu_to_be32(UATH_CHAN_2GHZ);
456 reset.flags |= cpu_to_be32(UATH_CHAN_OFDM);
457 reset.freq = cpu_to_be32(conf->channel->center_freq);
458 reset.maxrdpower = cpu_to_be32(50); /* XXX */
459 reset.channelchange = cpu_to_be32(1);
460 reset.keeprccontent = cpu_to_be32(0);
461
462 ar5523_dbg(ar, "set chan flags 0x%x freq %d\n",
463 be32_to_cpu(reset.flags),
464 conf->channel->center_freq);
465 return ar5523_cmd_write(ar, WDCMSG_RESET, &reset, sizeof(reset), 0);
466 }
467
468 static int ar5523_queue_init(struct ar5523 *ar)
469 {
470 struct ar5523_cmd_txq_setup qinfo;
471
472 ar5523_dbg(ar, "setting up Tx queue\n");
473 qinfo.qid = cpu_to_be32(0);
474 qinfo.len = cpu_to_be32(sizeof(qinfo.attr));
475 qinfo.attr.priority = cpu_to_be32(0); /* XXX */
476 qinfo.attr.aifs = cpu_to_be32(3);
477 qinfo.attr.logcwmin = cpu_to_be32(4);
478 qinfo.attr.logcwmax = cpu_to_be32(10);
479 qinfo.attr.bursttime = cpu_to_be32(0);
480 qinfo.attr.mode = cpu_to_be32(0);
481 qinfo.attr.qflags = cpu_to_be32(1); /* XXX? */
482 return ar5523_cmd_write(ar, WDCMSG_SETUP_TX_QUEUE, &qinfo,
483 sizeof(qinfo), 0);
484 }
485
486 static int ar5523_switch_chan(struct ar5523 *ar)
487 {
488 int error;
489
490 error = ar5523_set_chan(ar);
491 if (error) {
492 ar5523_err(ar, "could not set chan, error %d\n", error);
493 goto out_err;
494 }
495
496 /* reset Tx rings */
497 error = ar5523_reset_tx_queues(ar);
498 if (error) {
499 ar5523_err(ar, "could not reset Tx queues, error %d\n",
500 error);
501 goto out_err;
502 }
503 /* set Tx rings WME properties */
504 error = ar5523_queue_init(ar);
505 if (error)
506 ar5523_err(ar, "could not init wme, error %d\n", error);
507
508 out_err:
509 return error;
510 }
511
512 static void ar5523_rx_data_put(struct ar5523 *ar,
513 struct ar5523_rx_data *data)
514 {
515 unsigned long flags;
516 spin_lock_irqsave(&ar->rx_data_list_lock, flags);
517 list_move(&data->list, &ar->rx_data_free);
518 spin_unlock_irqrestore(&ar->rx_data_list_lock, flags);
519 }
520
521 static void ar5523_data_rx_cb(struct urb *urb)
522 {
523 struct ar5523_rx_data *data = urb->context;
524 struct ar5523 *ar = data->ar;
525 struct ar5523_rx_desc *desc;
526 struct ar5523_chunk *chunk;
527 struct ieee80211_hw *hw = ar->hw;
528 struct ieee80211_rx_status *rx_status;
529 u32 rxlen;
530 int usblen = urb->actual_length;
531 int hdrlen, pad;
532
533 ar5523_dbg(ar, "%s\n", __func__);
534 /* sync/async unlink faults aren't errors */
535 if (urb->status) {
536 if (urb->status != -ESHUTDOWN)
537 ar5523_err(ar, "%s: USB err: %d\n", __func__,
538 urb->status);
539 goto skip;
540 }
541
542 if (usblen < AR5523_MIN_RXBUFSZ) {
543 ar5523_err(ar, "RX: wrong xfer size (usblen=%d)\n", usblen);
544 goto skip;
545 }
546
547 chunk = (struct ar5523_chunk *) data->skb->data;
548
549 if (((chunk->flags & UATH_CFLAGS_FINAL) == 0) ||
550 chunk->seqnum != 0) {
551 ar5523_dbg(ar, "RX: No final flag. s: %d f: %02x l: %d\n",
552 chunk->seqnum, chunk->flags,
553 be16_to_cpu(chunk->length));
554 goto skip;
555 }
556
557 /* Rx descriptor is located at the end, 32-bit aligned */
558 desc = (struct ar5523_rx_desc *)
559 (data->skb->data + usblen - sizeof(struct ar5523_rx_desc));
560
561 rxlen = be32_to_cpu(desc->len);
562 if (rxlen > ar->rxbufsz) {
563 ar5523_dbg(ar, "RX: Bad descriptor (len=%d)\n",
564 be32_to_cpu(desc->len));
565 goto skip;
566 }
567
568 if (!rxlen) {
569 ar5523_dbg(ar, "RX: rxlen is 0\n");
570 goto skip;
571 }
572
573 if (be32_to_cpu(desc->status) != 0) {
574 ar5523_dbg(ar, "Bad RX status (0x%x len = %d). Skip\n",
575 be32_to_cpu(desc->status), be32_to_cpu(desc->len));
576 goto skip;
577 }
578
579 skb_reserve(data->skb, sizeof(*chunk));
580 skb_put(data->skb, rxlen - sizeof(struct ar5523_rx_desc));
581
582 hdrlen = ieee80211_get_hdrlen_from_skb(data->skb);
583 if (!IS_ALIGNED(hdrlen, 4)) {
584 ar5523_dbg(ar, "eek, alignment workaround activated\n");
585 pad = ALIGN(hdrlen, 4) - hdrlen;
586 memmove(data->skb->data + pad, data->skb->data, hdrlen);
587 skb_pull(data->skb, pad);
588 skb_put(data->skb, pad);
589 }
590
591 rx_status = IEEE80211_SKB_RXCB(data->skb);
592 memset(rx_status, 0, sizeof(*rx_status));
593 rx_status->freq = be32_to_cpu(desc->channel);
594 rx_status->band = hw->conf.channel->band;
595 rx_status->signal = -95 + be32_to_cpu(desc->rssi);
596
597 ieee80211_rx_irqsafe(hw, data->skb);
598 data->skb = NULL;
599
600 skip:
601 if (data->skb) {
602 dev_kfree_skb_irq(data->skb);
603 data->skb = NULL;
604 }
605
606 ar5523_rx_data_put(ar, data);
607 if (atomic_inc_return(&ar->rx_data_free_cnt) >=
608 AR5523_RX_DATA_REFILL_COUNT &&
609 test_bit(AR5523_HW_UP, &ar->flags))
610 queue_work(ar->wq, &ar->rx_refill_work);
611 }
612
613 static void ar5523_rx_refill_work(struct work_struct *work)
614 {
615 struct ar5523 *ar = container_of(work, struct ar5523, rx_refill_work);
616 struct ar5523_rx_data *data;
617 unsigned long flags;
618 int error;
619
620 ar5523_dbg(ar, "%s\n", __func__);
621 do {
622 spin_lock_irqsave(&ar->rx_data_list_lock, flags);
623
624 if (!list_empty(&ar->rx_data_free))
625 data = (struct ar5523_rx_data *) ar->rx_data_free.next;
626 else
627 data = NULL;
628 spin_unlock_irqrestore(&ar->rx_data_list_lock, flags);
629
630 if (!data)
631 goto done;
632
633 data->skb = alloc_skb(ar->rxbufsz, GFP_KERNEL);
634 if (!data->skb) {
635 ar5523_err(ar, "could not allocate rx skbuff\n");
636 return;
637 }
638
639 usb_fill_bulk_urb(data->urb, ar->dev,
640 ar5523_data_rx_pipe(ar->dev), data->skb->data,
641 ar->rxbufsz, ar5523_data_rx_cb, data);
642
643 spin_lock_irqsave(&ar->rx_data_list_lock, flags);
644 list_move(&data->list, &ar->rx_data_used);
645 spin_unlock_irqrestore(&ar->rx_data_list_lock, flags);
646 atomic_dec(&ar->rx_data_free_cnt);
647
648 error = usb_submit_urb(data->urb, GFP_KERNEL);
649 if (error) {
650 kfree_skb(data->skb);
651 if (error != -ENODEV)
652 ar5523_err(ar, "Err sending rx data urb %d\n",
653 error);
654 ar5523_rx_data_put(ar, data);
655 atomic_inc(&ar->rx_data_free_cnt);
656 return;
657 }
658
659 } while (true);
660 done:
661 return;
662 }
663
664 static void ar5523_cancel_rx_bufs(struct ar5523 *ar)
665 {
666 struct ar5523_rx_data *data;
667 unsigned long flags;
668
669 do {
670 spin_lock_irqsave(&ar->rx_data_list_lock, flags);
671 if (!list_empty(&ar->rx_data_used))
672 data = (struct ar5523_rx_data *) ar->rx_data_used.next;
673 else
674 data = NULL;
675 spin_unlock_irqrestore(&ar->rx_data_list_lock, flags);
676
677 if (!data)
678 break;
679
680 usb_kill_urb(data->urb);
681 list_move(&data->list, &ar->rx_data_free);
682 atomic_inc(&ar->rx_data_free_cnt);
683 } while (data);
684 }
685
686 static void ar5523_free_rx_bufs(struct ar5523 *ar)
687 {
688 struct ar5523_rx_data *data;
689
690 ar5523_cancel_rx_bufs(ar);
691 while (!list_empty(&ar->rx_data_free)) {
692 data = (struct ar5523_rx_data *) ar->rx_data_free.next;
693 list_del(&data->list);
694 usb_free_urb(data->urb);
695 }
696 }
697
698 static int ar5523_alloc_rx_bufs(struct ar5523 *ar)
699 {
700 int i;
701
702 for (i = 0; i < AR5523_RX_DATA_COUNT; i++) {
703 struct ar5523_rx_data *data = &ar->rx_data[i];
704
705 data->ar = ar;
706 data->urb = usb_alloc_urb(0, GFP_KERNEL);
707 if (!data->urb) {
708 ar5523_err(ar, "could not allocate rx data urb\n");
709 goto err;
710 }
711 list_add_tail(&data->list, &ar->rx_data_free);
712 atomic_inc(&ar->rx_data_free_cnt);
713 }
714 return 0;
715
716 err:
717 ar5523_free_rx_bufs(ar);
718 return -ENOMEM;
719 }
720
721 static void ar5523_data_tx_pkt_put(struct ar5523 *ar)
722 {
723 atomic_dec(&ar->tx_nr_total);
724 if (!atomic_dec_return(&ar->tx_nr_pending)) {
725 del_timer(&ar->tx_wd_timer);
726 wake_up(&ar->tx_flush_waitq);
727 }
728
729 if (atomic_read(&ar->tx_nr_total) < AR5523_TX_DATA_RESTART_COUNT) {
730 ar5523_dbg(ar, "restart tx queue\n");
731 ieee80211_wake_queues(ar->hw);
732 }
733 }
734
735 static void ar5523_data_tx_cb(struct urb *urb)
736 {
737 struct sk_buff *skb = urb->context;
738 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
739 struct ar5523_tx_data *data = (struct ar5523_tx_data *)
740 txi->driver_data;
741 struct ar5523 *ar = data->ar;
742 unsigned long flags;
743
744 ar5523_dbg(ar, "data tx urb completed: %d\n", urb->status);
745
746 spin_lock_irqsave(&ar->tx_data_list_lock, flags);
747 list_del(&data->list);
748 spin_unlock_irqrestore(&ar->tx_data_list_lock, flags);
749
750 if (urb->status) {
751 ar5523_dbg(ar, "%s: urb status: %d\n", __func__, urb->status);
752 ar5523_data_tx_pkt_put(ar);
753 ieee80211_free_txskb(ar->hw, skb);
754 } else {
755 skb_pull(skb, sizeof(struct ar5523_tx_desc) + sizeof(__be32));
756 ieee80211_tx_status_irqsafe(ar->hw, skb);
757 }
758 usb_free_urb(urb);
759 }
760
761 static void ar5523_tx(struct ieee80211_hw *hw,
762 struct ieee80211_tx_control *control,
763 struct sk_buff *skb)
764 {
765 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
766 struct ar5523_tx_data *data = (struct ar5523_tx_data *)
767 txi->driver_data;
768 struct ar5523 *ar = hw->priv;
769 unsigned long flags;
770
771 ar5523_dbg(ar, "tx called\n");
772 if (atomic_inc_return(&ar->tx_nr_total) >= AR5523_TX_DATA_COUNT) {
773 ar5523_dbg(ar, "tx queue full\n");
774 ar5523_dbg(ar, "stop queues (tot %d pend %d)\n",
775 atomic_read(&ar->tx_nr_total),
776 atomic_read(&ar->tx_nr_pending));
777 ieee80211_stop_queues(hw);
778 }
779
780 data->skb = skb;
781
782 spin_lock_irqsave(&ar->tx_data_list_lock, flags);
783 list_add_tail(&data->list, &ar->tx_queue_pending);
784 spin_unlock_irqrestore(&ar->tx_data_list_lock, flags);
785
786 ieee80211_queue_work(ar->hw, &ar->tx_work);
787 }
788
789 static void ar5523_tx_work_locked(struct ar5523 *ar)
790 {
791 struct ar5523_tx_data *data;
792 struct ar5523_tx_desc *desc;
793 struct ar5523_chunk *chunk;
794 struct ieee80211_tx_info *txi;
795 struct urb *urb;
796 struct sk_buff *skb;
797 int error = 0, paylen;
798 u32 txqid;
799 unsigned long flags;
800
801 BUILD_BUG_ON(sizeof(struct ar5523_tx_data) >
802 IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
803
804 ar5523_dbg(ar, "%s\n", __func__);
805 do {
806 spin_lock_irqsave(&ar->tx_data_list_lock, flags);
807 if (!list_empty(&ar->tx_queue_pending)) {
808 data = (struct ar5523_tx_data *)
809 ar->tx_queue_pending.next;
810 list_del(&data->list);
811 } else
812 data = NULL;
813 spin_unlock_irqrestore(&ar->tx_data_list_lock, flags);
814
815 if (!data)
816 break;
817
818 skb = data->skb;
819 txqid = 0;
820 txi = IEEE80211_SKB_CB(skb);
821 paylen = skb->len;
822 urb = usb_alloc_urb(0, GFP_KERNEL);
823 if (!urb) {
824 ar5523_err(ar, "Failed to allocate TX urb\n");
825 ieee80211_free_txskb(ar->hw, skb);
826 continue;
827 }
828
829 data->ar = ar;
830 data->urb = urb;
831
832 desc = (struct ar5523_tx_desc *)skb_push(skb, sizeof(*desc));
833 chunk = (struct ar5523_chunk *)skb_push(skb, sizeof(*chunk));
834
835 chunk->seqnum = 0;
836 chunk->flags = UATH_CFLAGS_FINAL;
837 chunk->length = cpu_to_be16(skb->len);
838
839 desc->msglen = cpu_to_be32(skb->len);
840 desc->msgid = AR5523_DATA_ID;
841 desc->buflen = cpu_to_be32(paylen);
842 desc->type = cpu_to_be32(WDCMSG_SEND);
843 desc->flags = cpu_to_be32(UATH_TX_NOTIFY);
844
845 if (test_bit(AR5523_CONNECTED, &ar->flags))
846 desc->connid = cpu_to_be32(AR5523_ID_BSS);
847 else
848 desc->connid = cpu_to_be32(AR5523_ID_BROADCAST);
849
850 if (txi->flags & IEEE80211_TX_CTL_USE_MINRATE)
851 txqid |= UATH_TXQID_MINRATE;
852
853 desc->txqid = cpu_to_be32(txqid);
854
855 urb->transfer_flags = URB_ZERO_PACKET;
856 usb_fill_bulk_urb(urb, ar->dev, ar5523_data_tx_pipe(ar->dev),
857 skb->data, skb->len, ar5523_data_tx_cb, skb);
858
859 spin_lock_irqsave(&ar->tx_data_list_lock, flags);
860 list_add_tail(&data->list, &ar->tx_queue_submitted);
861 spin_unlock_irqrestore(&ar->tx_data_list_lock, flags);
862 mod_timer(&ar->tx_wd_timer, jiffies + AR5523_TX_WD_TIMEOUT);
863 atomic_inc(&ar->tx_nr_pending);
864
865 ar5523_dbg(ar, "TX Frame (%d pending)\n",
866 atomic_read(&ar->tx_nr_pending));
867 error = usb_submit_urb(urb, GFP_KERNEL);
868 if (error) {
869 ar5523_err(ar, "error %d when submitting tx urb\n",
870 error);
871 spin_lock_irqsave(&ar->tx_data_list_lock, flags);
872 list_del(&data->list);
873 spin_unlock_irqrestore(&ar->tx_data_list_lock, flags);
874 atomic_dec(&ar->tx_nr_pending);
875 ar5523_data_tx_pkt_put(ar);
876 usb_free_urb(urb);
877 ieee80211_free_txskb(ar->hw, skb);
878 }
879 } while (true);
880 }
881
882 static void ar5523_tx_work(struct work_struct *work)
883 {
884 struct ar5523 *ar = container_of(work, struct ar5523, tx_work);
885
886 ar5523_dbg(ar, "%s\n", __func__);
887 mutex_lock(&ar->mutex);
888 ar5523_tx_work_locked(ar);
889 mutex_unlock(&ar->mutex);
890 }
891
892 static void ar5523_tx_wd_timer(unsigned long arg)
893 {
894 struct ar5523 *ar = (struct ar5523 *) arg;
895
896 ar5523_dbg(ar, "TX watchdog timer triggered\n");
897 ieee80211_queue_work(ar->hw, &ar->tx_wd_work);
898 }
899
900 static void ar5523_tx_wd_work(struct work_struct *work)
901 {
902 struct ar5523 *ar = container_of(work, struct ar5523, tx_wd_work);
903
904 /* Occasionally the TX queues stop responding. The only way to
905 * recover seems to be to reset the dongle.
906 */
907
908 mutex_lock(&ar->mutex);
909 ar5523_err(ar, "TX queue stuck (tot %d pend %d)\n",
910 atomic_read(&ar->tx_nr_total),
911 atomic_read(&ar->tx_nr_pending));
912
913 ar5523_err(ar, "Will restart dongle.\n");
914 ar5523_cmd_write(ar, WDCMSG_TARGET_RESET, NULL, 0, 0);
915 mutex_unlock(&ar->mutex);
916 }
917
918 static void ar5523_flush_tx(struct ar5523 *ar)
919 {
920 ar5523_tx_work_locked(ar);
921
922 /* Don't waste time trying to flush if USB is disconnected */
923 if (test_bit(AR5523_USB_DISCONNECTED, &ar->flags))
924 return;
925 if (!wait_event_timeout(ar->tx_flush_waitq,
926 !atomic_read(&ar->tx_nr_pending), AR5523_FLUSH_TIMEOUT))
927 ar5523_err(ar, "flush timeout (tot %d pend %d)\n",
928 atomic_read(&ar->tx_nr_total),
929 atomic_read(&ar->tx_nr_pending));
930 }
931
932 static void ar5523_free_tx_cmd(struct ar5523 *ar)
933 {
934 struct ar5523_tx_cmd *cmd = &ar->tx_cmd;
935
936 usb_free_coherent(ar->dev, AR5523_MAX_RXCMDSZ, cmd->buf_tx,
937 cmd->urb_tx->transfer_dma);
938 usb_free_urb(cmd->urb_tx);
939 }
940
941 static int ar5523_alloc_tx_cmd(struct ar5523 *ar)
942 {
943 struct ar5523_tx_cmd *cmd = &ar->tx_cmd;
944
945 cmd->ar = ar;
946 init_completion(&cmd->done);
947
948 cmd->urb_tx = usb_alloc_urb(0, GFP_KERNEL);
949 if (!cmd->urb_tx) {
950 ar5523_err(ar, "could not allocate urb\n");
951 return -ENOMEM;
952 }
953 cmd->buf_tx = usb_alloc_coherent(ar->dev, AR5523_MAX_TXCMDSZ,
954 GFP_KERNEL,
955 &cmd->urb_tx->transfer_dma);
956 if (!cmd->buf_tx) {
957 usb_free_urb(cmd->urb_tx);
958 return -ENOMEM;
959 }
960 return 0;
961 }
962
963 /*
964 * This function is called periodically (every second) when associated to
965 * query device statistics.
966 */
967 static void ar5523_stat_work(struct work_struct *work)
968 {
969 struct ar5523 *ar = container_of(work, struct ar5523, stat_work.work);
970 int error;
971
972 ar5523_dbg(ar, "%s\n", __func__);
973 mutex_lock(&ar->mutex);
974
975 /*
976 * Send request for statistics asynchronously once a second. This
977 * seems to be important. Throughput is a lot better if this is done.
978 */
979 error = ar5523_cmd_write(ar, WDCMSG_TARGET_GET_STATS, NULL, 0, 0);
980 if (error)
981 ar5523_err(ar, "could not query stats, error %d\n", error);
982 mutex_unlock(&ar->mutex);
983 ieee80211_queue_delayed_work(ar->hw, &ar->stat_work, HZ);
984 }
985
986 /*
987 * Interface routines to the mac80211 stack.
988 */
989 static int ar5523_start(struct ieee80211_hw *hw)
990 {
991 struct ar5523 *ar = hw->priv;
992 int error;
993 __be32 val;
994
995 ar5523_dbg(ar, "start called\n");
996
997 mutex_lock(&ar->mutex);
998 val = cpu_to_be32(0);
999 ar5523_cmd_write(ar, WDCMSG_BIND, &val, sizeof(val), 0);
1000
1001 /* set MAC address */
1002 ar5523_config_multi(ar, CFG_MAC_ADDR, &ar->hw->wiphy->perm_addr,
1003 ETH_ALEN);
1004
1005 /* XXX honor net80211 state */
1006 ar5523_config(ar, CFG_RATE_CONTROL_ENABLE, 0x00000001);
1007 ar5523_config(ar, CFG_DIVERSITY_CTL, 0x00000001);
1008 ar5523_config(ar, CFG_ABOLT, 0x0000003f);
1009 ar5523_config(ar, CFG_WME_ENABLED, 0x00000000);
1010
1011 ar5523_config(ar, CFG_SERVICE_TYPE, 1);
1012 ar5523_config(ar, CFG_TP_SCALE, 0x00000000);
1013 ar5523_config(ar, CFG_TPC_HALF_DBM5, 0x0000003c);
1014 ar5523_config(ar, CFG_TPC_HALF_DBM2, 0x0000003c);
1015 ar5523_config(ar, CFG_OVERRD_TX_POWER, 0x00000000);
1016 ar5523_config(ar, CFG_GMODE_PROTECTION, 0x00000000);
1017 ar5523_config(ar, CFG_GMODE_PROTECT_RATE_INDEX, 0x00000003);
1018 ar5523_config(ar, CFG_PROTECTION_TYPE, 0x00000000);
1019 ar5523_config(ar, CFG_MODE_CTS, 0x00000002);
1020
1021 error = ar5523_cmd_read(ar, WDCMSG_TARGET_START, NULL, 0,
1022 &val, sizeof(val), AR5523_CMD_FLAG_MAGIC);
1023 if (error) {
1024 ar5523_dbg(ar, "could not start target, error %d\n", error);
1025 goto err;
1026 }
1027 ar5523_dbg(ar, "WDCMSG_TARGET_START returns handle: 0x%x\n",
1028 be32_to_cpu(val));
1029
1030 ar5523_switch_chan(ar);
1031
1032 val = cpu_to_be32(TARGET_DEVICE_AWAKE);
1033 ar5523_cmd_write(ar, WDCMSG_SET_PWR_MODE, &val, sizeof(val), 0);
1034 /* XXX? check */
1035 ar5523_cmd_write(ar, WDCMSG_RESET_KEY_CACHE, NULL, 0, 0);
1036
1037 set_bit(AR5523_HW_UP, &ar->flags);
1038 queue_work(ar->wq, &ar->rx_refill_work);
1039
1040 /* enable Rx */
1041 ar5523_set_rxfilter(ar, 0, UATH_FILTER_OP_INIT);
1042 ar5523_set_rxfilter(ar,
1043 UATH_FILTER_RX_UCAST | UATH_FILTER_RX_MCAST |
1044 UATH_FILTER_RX_BCAST | UATH_FILTER_RX_BEACON,
1045 UATH_FILTER_OP_SET);
1046
1047 ar5523_set_ledsteady(ar, UATH_LED_ACTIVITY, UATH_LED_ON);
1048 ar5523_dbg(ar, "start OK\n");
1049
1050 err:
1051 mutex_unlock(&ar->mutex);
1052 return error;
1053 }
1054
1055 static void ar5523_stop(struct ieee80211_hw *hw)
1056 {
1057 struct ar5523 *ar = hw->priv;
1058
1059 ar5523_dbg(ar, "stop called\n");
1060
1061 cancel_delayed_work_sync(&ar->stat_work);
1062 mutex_lock(&ar->mutex);
1063 clear_bit(AR5523_HW_UP, &ar->flags);
1064
1065 ar5523_set_ledsteady(ar, UATH_LED_LINK, UATH_LED_OFF);
1066 ar5523_set_ledsteady(ar, UATH_LED_ACTIVITY, UATH_LED_OFF);
1067
1068 ar5523_cmd_write(ar, WDCMSG_TARGET_STOP, NULL, 0, 0);
1069
1070 del_timer_sync(&ar->tx_wd_timer);
1071 cancel_work_sync(&ar->tx_wd_work);
1072 cancel_work_sync(&ar->rx_refill_work);
1073 ar5523_cancel_rx_bufs(ar);
1074 mutex_unlock(&ar->mutex);
1075 }
1076
1077 static int ar5523_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1078 {
1079 struct ar5523 *ar = hw->priv;
1080 int ret;
1081
1082 ar5523_dbg(ar, "set_rts_threshold called\n");
1083 mutex_lock(&ar->mutex);
1084
1085 ret = ar5523_config(ar, CFG_USER_RTS_THRESHOLD, value);
1086
1087 mutex_unlock(&ar->mutex);
1088 return ret;
1089 }
1090
1091 static void ar5523_flush(struct ieee80211_hw *hw, bool drop)
1092 {
1093 struct ar5523 *ar = hw->priv;
1094
1095 ar5523_dbg(ar, "flush called\n");
1096 ar5523_flush_tx(ar);
1097 }
1098
1099 static int ar5523_add_interface(struct ieee80211_hw *hw,
1100 struct ieee80211_vif *vif)
1101 {
1102 struct ar5523 *ar = hw->priv;
1103
1104 ar5523_dbg(ar, "add interface called\n");
1105
1106 if (ar->vif) {
1107 ar5523_dbg(ar, "invalid add_interface\n");
1108 return -EOPNOTSUPP;
1109 }
1110
1111 switch (vif->type) {
1112 case NL80211_IFTYPE_STATION:
1113 ar->vif = vif;
1114 break;
1115 default:
1116 return -EOPNOTSUPP;
1117 }
1118 return 0;
1119 }
1120
1121 static void ar5523_remove_interface(struct ieee80211_hw *hw,
1122 struct ieee80211_vif *vif)
1123 {
1124 struct ar5523 *ar = hw->priv;
1125
1126 ar5523_dbg(ar, "remove interface called\n");
1127 ar->vif = NULL;
1128 }
1129
1130 static int ar5523_hwconfig(struct ieee80211_hw *hw, u32 changed)
1131 {
1132 struct ar5523 *ar = hw->priv;
1133
1134 ar5523_dbg(ar, "config called\n");
1135 mutex_lock(&ar->mutex);
1136 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1137 ar5523_dbg(ar, "Do channel switch\n");
1138 ar5523_flush_tx(ar);
1139 ar5523_switch_chan(ar);
1140 }
1141 mutex_unlock(&ar->mutex);
1142 return 0;
1143 }
1144
1145 static int ar5523_get_wlan_mode(struct ar5523 *ar,
1146 struct ieee80211_bss_conf *bss_conf)
1147 {
1148 struct ieee80211_supported_band *band;
1149 int bit;
1150 struct ieee80211_sta *sta;
1151 u32 sta_rate_set;
1152
1153 band = ar->hw->wiphy->bands[ar->hw->conf.channel->band];
1154 sta = ieee80211_find_sta(ar->vif, bss_conf->bssid);
1155 if (!sta) {
1156 ar5523_info(ar, "STA not found!\n");
1157 return WLAN_MODE_11b;
1158 }
1159 sta_rate_set = sta->supp_rates[ar->hw->conf.channel->band];
1160
1161 for (bit = 0; bit < band->n_bitrates; bit++) {
1162 if (sta_rate_set & 1) {
1163 int rate = band->bitrates[bit].bitrate;
1164 switch (rate) {
1165 case 60:
1166 case 90:
1167 case 120:
1168 case 180:
1169 case 240:
1170 case 360:
1171 case 480:
1172 case 540:
1173 return WLAN_MODE_11g;
1174 }
1175 }
1176 sta_rate_set >>= 1;
1177 }
1178 return WLAN_MODE_11b;
1179 }
1180
1181 static void ar5523_create_rateset(struct ar5523 *ar,
1182 struct ieee80211_bss_conf *bss_conf,
1183 struct ar5523_cmd_rateset *rs,
1184 bool basic)
1185 {
1186 struct ieee80211_supported_band *band;
1187 struct ieee80211_sta *sta;
1188 int bit, i = 0;
1189 u32 sta_rate_set, basic_rate_set;
1190
1191 sta = ieee80211_find_sta(ar->vif, bss_conf->bssid);
1192 basic_rate_set = bss_conf->basic_rates;
1193 if (!sta) {
1194 ar5523_info(ar, "STA not found. Cannot set rates\n");
1195 sta_rate_set = bss_conf->basic_rates;
1196 }
1197 sta_rate_set = sta->supp_rates[ar->hw->conf.channel->band];
1198
1199 ar5523_dbg(ar, "sta rate_set = %08x\n", sta_rate_set);
1200
1201 band = ar->hw->wiphy->bands[ar->hw->conf.channel->band];
1202 for (bit = 0; bit < band->n_bitrates; bit++) {
1203 BUG_ON(i >= AR5523_MAX_NRATES);
1204 ar5523_dbg(ar, "Considering rate %d : %d\n",
1205 band->bitrates[bit].hw_value, sta_rate_set & 1);
1206 if (sta_rate_set & 1) {
1207 rs->set[i] = band->bitrates[bit].hw_value;
1208 if (basic_rate_set & 1 && basic)
1209 rs->set[i] |= 0x80;
1210 i++;
1211 }
1212 sta_rate_set >>= 1;
1213 basic_rate_set >>= 1;
1214 }
1215
1216 rs->length = i;
1217 }
1218
1219 static int ar5523_set_basic_rates(struct ar5523 *ar,
1220 struct ieee80211_bss_conf *bss)
1221 {
1222 struct ar5523_cmd_rates rates;
1223
1224 memset(&rates, 0, sizeof(rates));
1225 rates.connid = cpu_to_be32(2); /* XXX */
1226 rates.size = cpu_to_be32(sizeof(struct ar5523_cmd_rateset));
1227 ar5523_create_rateset(ar, bss, &rates.rateset, true);
1228
1229 return ar5523_cmd_write(ar, WDCMSG_SET_BASIC_RATE, &rates,
1230 sizeof(rates), 0);
1231 }
1232
1233 static int ar5523_create_connection(struct ar5523 *ar,
1234 struct ieee80211_vif *vif,
1235 struct ieee80211_bss_conf *bss)
1236 {
1237 struct ar5523_cmd_create_connection create;
1238 int wlan_mode;
1239
1240 memset(&create, 0, sizeof(create));
1241 create.connid = cpu_to_be32(2);
1242 create.bssid = cpu_to_be32(0);
1243 /* XXX packed or not? */
1244 create.size = cpu_to_be32(sizeof(struct ar5523_cmd_rateset));
1245
1246 ar5523_create_rateset(ar, bss, &create.connattr.rateset, false);
1247
1248 wlan_mode = ar5523_get_wlan_mode(ar, bss);
1249 create.connattr.wlanmode = cpu_to_be32(wlan_mode);
1250
1251 return ar5523_cmd_write(ar, WDCMSG_CREATE_CONNECTION, &create,
1252 sizeof(create), 0);
1253 }
1254
1255 static int ar5523_write_associd(struct ar5523 *ar,
1256 struct ieee80211_bss_conf *bss)
1257 {
1258 struct ar5523_cmd_set_associd associd;
1259
1260 memset(&associd, 0, sizeof(associd));
1261 associd.defaultrateix = cpu_to_be32(0); /* XXX */
1262 associd.associd = cpu_to_be32(bss->aid);
1263 associd.timoffset = cpu_to_be32(0x3b); /* XXX */
1264 memcpy(associd.bssid, bss->bssid, ETH_ALEN);
1265 return ar5523_cmd_write(ar, WDCMSG_WRITE_ASSOCID, &associd,
1266 sizeof(associd), 0);
1267 }
1268
1269 static void ar5523_bss_info_changed(struct ieee80211_hw *hw,
1270 struct ieee80211_vif *vif,
1271 struct ieee80211_bss_conf *bss,
1272 u32 changed)
1273 {
1274 struct ar5523 *ar = hw->priv;
1275 int error;
1276
1277 ar5523_dbg(ar, "bss_info_changed called\n");
1278 mutex_lock(&ar->mutex);
1279
1280 if (!(changed & BSS_CHANGED_ASSOC))
1281 goto out_unlock;
1282
1283 if (bss->assoc) {
1284 error = ar5523_create_connection(ar, vif, bss);
1285 if (error) {
1286 ar5523_err(ar, "could not create connection\n");
1287 goto out_unlock;
1288 }
1289
1290 error = ar5523_set_basic_rates(ar, bss);
1291 if (error) {
1292 ar5523_err(ar, "could not set negotiated rate set\n");
1293 goto out_unlock;
1294 }
1295
1296 error = ar5523_write_associd(ar, bss);
1297 if (error) {
1298 ar5523_err(ar, "could not set association\n");
1299 goto out_unlock;
1300 }
1301
1302 /* turn link LED on */
1303 ar5523_set_ledsteady(ar, UATH_LED_LINK, UATH_LED_ON);
1304 set_bit(AR5523_CONNECTED, &ar->flags);
1305 ieee80211_queue_delayed_work(hw, &ar->stat_work, HZ);
1306
1307 } else {
1308 cancel_delayed_work(&ar->stat_work);
1309 clear_bit(AR5523_CONNECTED, &ar->flags);
1310 ar5523_set_ledsteady(ar, UATH_LED_LINK, UATH_LED_OFF);
1311 }
1312
1313 out_unlock:
1314 mutex_unlock(&ar->mutex);
1315
1316 }
1317
1318 #define AR5523_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
1319 FIF_ALLMULTI | \
1320 FIF_FCSFAIL | \
1321 FIF_OTHER_BSS)
1322
1323 static void ar5523_configure_filter(struct ieee80211_hw *hw,
1324 unsigned int changed_flags,
1325 unsigned int *total_flags,
1326 u64 multicast)
1327 {
1328 struct ar5523 *ar = hw->priv;
1329 u32 filter = 0;
1330
1331 ar5523_dbg(ar, "configure_filter called\n");
1332 mutex_lock(&ar->mutex);
1333 ar5523_flush_tx(ar);
1334
1335 *total_flags &= AR5523_SUPPORTED_FILTERS;
1336
1337 /* The filters seems strange. UATH_FILTER_RX_BCAST and
1338 * UATH_FILTER_RX_MCAST does not result in those frames being RXed.
1339 * The only way I have found to get [mb]cast frames seems to be
1340 * to set UATH_FILTER_RX_PROM. */
1341 filter |= UATH_FILTER_RX_UCAST | UATH_FILTER_RX_MCAST |
1342 UATH_FILTER_RX_BCAST | UATH_FILTER_RX_BEACON |
1343 UATH_FILTER_RX_PROM;
1344
1345 ar5523_set_rxfilter(ar, 0, UATH_FILTER_OP_INIT);
1346 ar5523_set_rxfilter(ar, filter, UATH_FILTER_OP_SET);
1347
1348 mutex_unlock(&ar->mutex);
1349 }
1350
1351 static const struct ieee80211_ops ar5523_ops = {
1352 .start = ar5523_start,
1353 .stop = ar5523_stop,
1354 .tx = ar5523_tx,
1355 .set_rts_threshold = ar5523_set_rts_threshold,
1356 .add_interface = ar5523_add_interface,
1357 .remove_interface = ar5523_remove_interface,
1358 .config = ar5523_hwconfig,
1359 .bss_info_changed = ar5523_bss_info_changed,
1360 .configure_filter = ar5523_configure_filter,
1361 .flush = ar5523_flush,
1362 };
1363
1364 static int ar5523_host_available(struct ar5523 *ar)
1365 {
1366 struct ar5523_cmd_host_available setup;
1367
1368 /* inform target the host is available */
1369 setup.sw_ver_major = cpu_to_be32(ATH_SW_VER_MAJOR);
1370 setup.sw_ver_minor = cpu_to_be32(ATH_SW_VER_MINOR);
1371 setup.sw_ver_patch = cpu_to_be32(ATH_SW_VER_PATCH);
1372 setup.sw_ver_build = cpu_to_be32(ATH_SW_VER_BUILD);
1373 return ar5523_cmd_read(ar, WDCMSG_HOST_AVAILABLE,
1374 &setup, sizeof(setup), NULL, 0, 0);
1375 }
1376
1377 static int ar5523_get_devstatus(struct ar5523 *ar)
1378 {
1379 u8 macaddr[ETH_ALEN];
1380 int error;
1381
1382 /* retrieve MAC address */
1383 error = ar5523_get_status(ar, ST_MAC_ADDR, macaddr, ETH_ALEN);
1384 if (error) {
1385 ar5523_err(ar, "could not read MAC address\n");
1386 return error;
1387 }
1388
1389 SET_IEEE80211_PERM_ADDR(ar->hw, macaddr);
1390
1391 error = ar5523_get_status(ar, ST_SERIAL_NUMBER,
1392 &ar->serial[0], sizeof(ar->serial));
1393 if (error) {
1394 ar5523_err(ar, "could not read device serial number\n");
1395 return error;
1396 }
1397 return 0;
1398 }
1399
1400 #define AR5523_SANE_RXBUFSZ 2000
1401
1402 static int ar5523_get_max_rxsz(struct ar5523 *ar)
1403 {
1404 int error;
1405 __be32 rxsize;
1406
1407 /* Get max rx size */
1408 error = ar5523_get_status(ar, ST_WDC_TRANSPORT_CHUNK_SIZE, &rxsize,
1409 sizeof(rxsize));
1410 if (error != 0) {
1411 ar5523_err(ar, "could not read max RX size\n");
1412 return error;
1413 }
1414
1415 ar->rxbufsz = be32_to_cpu(rxsize);
1416
1417 if (!ar->rxbufsz || ar->rxbufsz > AR5523_SANE_RXBUFSZ) {
1418 ar5523_err(ar, "Bad rxbufsz from device. Using %d instead\n",
1419 AR5523_SANE_RXBUFSZ);
1420 ar->rxbufsz = AR5523_SANE_RXBUFSZ;
1421 }
1422
1423 ar5523_dbg(ar, "Max RX buf size: %d\n", ar->rxbufsz);
1424 return 0;
1425 }
1426
1427 /*
1428 * This is copied from rtl818x, but we should probably move this
1429 * to common code as in OpenBSD.
1430 */
1431 static const struct ieee80211_rate ar5523_rates[] = {
1432 { .bitrate = 10, .hw_value = 2, },
1433 { .bitrate = 20, .hw_value = 4 },
1434 { .bitrate = 55, .hw_value = 11, },
1435 { .bitrate = 110, .hw_value = 22, },
1436 { .bitrate = 60, .hw_value = 12, },
1437 { .bitrate = 90, .hw_value = 18, },
1438 { .bitrate = 120, .hw_value = 24, },
1439 { .bitrate = 180, .hw_value = 36, },
1440 { .bitrate = 240, .hw_value = 48, },
1441 { .bitrate = 360, .hw_value = 72, },
1442 { .bitrate = 480, .hw_value = 96, },
1443 { .bitrate = 540, .hw_value = 108, },
1444 };
1445
1446 static const struct ieee80211_channel ar5523_channels[] = {
1447 { .center_freq = 2412 },
1448 { .center_freq = 2417 },
1449 { .center_freq = 2422 },
1450 { .center_freq = 2427 },
1451 { .center_freq = 2432 },
1452 { .center_freq = 2437 },
1453 { .center_freq = 2442 },
1454 { .center_freq = 2447 },
1455 { .center_freq = 2452 },
1456 { .center_freq = 2457 },
1457 { .center_freq = 2462 },
1458 { .center_freq = 2467 },
1459 { .center_freq = 2472 },
1460 { .center_freq = 2484 },
1461 };
1462
1463 static int ar5523_init_modes(struct ar5523 *ar)
1464 {
1465 BUILD_BUG_ON(sizeof(ar->channels) != sizeof(ar5523_channels));
1466 BUILD_BUG_ON(sizeof(ar->rates) != sizeof(ar5523_rates));
1467
1468 memcpy(ar->channels, ar5523_channels, sizeof(ar5523_channels));
1469 memcpy(ar->rates, ar5523_rates, sizeof(ar5523_rates));
1470
1471 ar->band.band = IEEE80211_BAND_2GHZ;
1472 ar->band.channels = ar->channels;
1473 ar->band.n_channels = ARRAY_SIZE(ar5523_channels);
1474 ar->band.bitrates = ar->rates;
1475 ar->band.n_bitrates = ARRAY_SIZE(ar5523_rates);
1476 ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &ar->band;
1477 return 0;
1478 }
1479
1480 /*
1481 * Load the MIPS R4000 microcode into the device. Once the image is loaded,
1482 * the device will detach itself from the bus and reattach later with a new
1483 * product Id (a la ezusb).
1484 */
1485 static int ar5523_load_firmware(struct usb_device *dev)
1486 {
1487 struct ar5523_fwblock *txblock, *rxblock;
1488 const struct firmware *fw;
1489 void *fwbuf;
1490 int len, offset;
1491 int foolen; /* XXX(hch): handle short transfers */
1492 int error = -ENXIO;
1493
1494 if (request_firmware(&fw, AR5523_FIRMWARE_FILE, &dev->dev)) {
1495 dev_err(&dev->dev, "no firmware found: %s\n",
1496 AR5523_FIRMWARE_FILE);
1497 return -ENOENT;
1498 }
1499
1500 txblock = kmalloc(sizeof(*txblock), GFP_KERNEL);
1501 if (!txblock)
1502 goto out;
1503
1504 rxblock = kmalloc(sizeof(*rxblock), GFP_KERNEL);
1505 if (!rxblock)
1506 goto out_free_txblock;
1507
1508 fwbuf = kmalloc(AR5523_MAX_FWBLOCK_SIZE, GFP_KERNEL);
1509 if (!fwbuf)
1510 goto out_free_rxblock;
1511
1512 memset(txblock, 0, sizeof(struct ar5523_fwblock));
1513 txblock->flags = cpu_to_be32(AR5523_WRITE_BLOCK);
1514 txblock->total = cpu_to_be32(fw->size);
1515
1516 offset = 0;
1517 len = fw->size;
1518 while (len > 0) {
1519 int mlen = min(len, AR5523_MAX_FWBLOCK_SIZE);
1520
1521 txblock->remain = cpu_to_be32(len - mlen);
1522 txblock->len = cpu_to_be32(mlen);
1523
1524 /* send firmware block meta-data */
1525 error = usb_bulk_msg(dev, ar5523_cmd_tx_pipe(dev),
1526 txblock, sizeof(*txblock), &foolen,
1527 AR5523_CMD_TIMEOUT);
1528 if (error) {
1529 dev_err(&dev->dev,
1530 "could not send firmware block info\n");
1531 goto out_free_fwbuf;
1532 }
1533
1534 /* send firmware block data */
1535 memcpy(fwbuf, fw->data + offset, mlen);
1536 error = usb_bulk_msg(dev, ar5523_data_tx_pipe(dev),
1537 fwbuf, mlen, &foolen,
1538 AR5523_DATA_TIMEOUT);
1539 if (error) {
1540 dev_err(&dev->dev,
1541 "could not send firmware block data\n");
1542 goto out_free_fwbuf;
1543 }
1544
1545 /* wait for ack from firmware */
1546 error = usb_bulk_msg(dev, ar5523_cmd_rx_pipe(dev),
1547 rxblock, sizeof(*rxblock), &foolen,
1548 AR5523_CMD_TIMEOUT);
1549 if (error) {
1550 dev_err(&dev->dev,
1551 "could not read firmware answer\n");
1552 goto out_free_fwbuf;
1553 }
1554
1555 len -= mlen;
1556 offset += mlen;
1557 }
1558
1559 /*
1560 * Set the error to -ENXIO to make sure we continue probing for
1561 * a driver.
1562 */
1563 error = -ENXIO;
1564
1565 out_free_fwbuf:
1566 kfree(fwbuf);
1567 out_free_rxblock:
1568 kfree(rxblock);
1569 out_free_txblock:
1570 kfree(txblock);
1571 out:
1572 release_firmware(fw);
1573 return error;
1574 }
1575
1576 static int ar5523_probe(struct usb_interface *intf,
1577 const struct usb_device_id *id)
1578 {
1579 struct usb_device *dev = interface_to_usbdev(intf);
1580 struct ieee80211_hw *hw;
1581 struct ar5523 *ar;
1582 int error = -ENOMEM;
1583
1584 /*
1585 * Load firmware if the device requires it. This will return
1586 * -ENXIO on success and we'll get called back afer the usb
1587 * id changes to indicate that the firmware is present.
1588 */
1589 if (id->driver_info & AR5523_FLAG_PRE_FIRMWARE)
1590 return ar5523_load_firmware(dev);
1591
1592
1593 hw = ieee80211_alloc_hw(sizeof(*ar), &ar5523_ops);
1594 if (!hw)
1595 goto out;
1596 SET_IEEE80211_DEV(hw, &intf->dev);
1597
1598 ar = hw->priv;
1599 ar->hw = hw;
1600 ar->dev = dev;
1601 mutex_init(&ar->mutex);
1602
1603 INIT_DELAYED_WORK(&ar->stat_work, ar5523_stat_work);
1604 init_timer(&ar->tx_wd_timer);
1605 setup_timer(&ar->tx_wd_timer, ar5523_tx_wd_timer, (unsigned long) ar);
1606 INIT_WORK(&ar->tx_wd_work, ar5523_tx_wd_work);
1607 INIT_WORK(&ar->tx_work, ar5523_tx_work);
1608 INIT_LIST_HEAD(&ar->tx_queue_pending);
1609 INIT_LIST_HEAD(&ar->tx_queue_submitted);
1610 spin_lock_init(&ar->tx_data_list_lock);
1611 atomic_set(&ar->tx_nr_total, 0);
1612 atomic_set(&ar->tx_nr_pending, 0);
1613 init_waitqueue_head(&ar->tx_flush_waitq);
1614
1615 atomic_set(&ar->rx_data_free_cnt, 0);
1616 INIT_WORK(&ar->rx_refill_work, ar5523_rx_refill_work);
1617 INIT_LIST_HEAD(&ar->rx_data_free);
1618 INIT_LIST_HEAD(&ar->rx_data_used);
1619 spin_lock_init(&ar->rx_data_list_lock);
1620
1621 ar->wq = create_singlethread_workqueue("ar5523");
1622 if (!ar->wq) {
1623 ar5523_err(ar, "Could not create wq\n");
1624 goto out_free_ar;
1625 }
1626
1627 error = ar5523_alloc_rx_bufs(ar);
1628 if (error) {
1629 ar5523_err(ar, "Could not allocate rx buffers\n");
1630 goto out_free_wq;
1631 }
1632
1633 error = ar5523_alloc_rx_cmd(ar);
1634 if (error) {
1635 ar5523_err(ar, "Could not allocate rx command buffers\n");
1636 goto out_free_rx_bufs;
1637 }
1638
1639 error = ar5523_alloc_tx_cmd(ar);
1640 if (error) {
1641 ar5523_err(ar, "Could not allocate tx command buffers\n");
1642 goto out_free_rx_cmd;
1643 }
1644
1645 error = ar5523_submit_rx_cmd(ar);
1646 if (error) {
1647 ar5523_err(ar, "Failed to submit rx cmd\n");
1648 goto out_free_tx_cmd;
1649 }
1650
1651 /*
1652 * We're now ready to send/receive firmware commands.
1653 */
1654 error = ar5523_host_available(ar);
1655 if (error) {
1656 ar5523_err(ar, "could not initialize adapter\n");
1657 goto out_cancel_rx_cmd;
1658 }
1659
1660 error = ar5523_get_max_rxsz(ar);
1661 if (error) {
1662 ar5523_err(ar, "could not get caps from adapter\n");
1663 goto out_cancel_rx_cmd;
1664 }
1665
1666 error = ar5523_get_devcap(ar);
1667 if (error) {
1668 ar5523_err(ar, "could not get caps from adapter\n");
1669 goto out_cancel_rx_cmd;
1670 }
1671
1672 error = ar5523_get_devstatus(ar);
1673 if (error != 0) {
1674 ar5523_err(ar, "could not get device status\n");
1675 goto out_cancel_rx_cmd;
1676 }
1677
1678 ar5523_info(ar, "MAC/BBP AR5523, RF AR%c112\n",
1679 (id->driver_info & AR5523_FLAG_ABG) ? '5' : '2');
1680
1681 ar->vif = NULL;
1682 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1683 IEEE80211_HW_SIGNAL_DBM |
1684 IEEE80211_HW_HAS_RATE_CONTROL;
1685 hw->extra_tx_headroom = sizeof(struct ar5523_tx_desc) +
1686 sizeof(struct ar5523_chunk);
1687 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1688 hw->queues = 1;
1689
1690 error = ar5523_init_modes(ar);
1691 if (error)
1692 goto out_cancel_rx_cmd;
1693
1694 usb_set_intfdata(intf, hw);
1695
1696 error = ieee80211_register_hw(hw);
1697 if (error) {
1698 ar5523_err(ar, "could not register device\n");
1699 goto out_cancel_rx_cmd;
1700 }
1701
1702 ar5523_info(ar, "Found and initialized AR5523 device\n");
1703 return 0;
1704
1705 out_cancel_rx_cmd:
1706 ar5523_cancel_rx_cmd(ar);
1707 out_free_tx_cmd:
1708 ar5523_free_tx_cmd(ar);
1709 out_free_rx_cmd:
1710 ar5523_free_rx_cmd(ar);
1711 out_free_rx_bufs:
1712 ar5523_free_rx_bufs(ar);
1713 out_free_wq:
1714 destroy_workqueue(ar->wq);
1715 out_free_ar:
1716 ieee80211_free_hw(hw);
1717 out:
1718 return error;
1719 }
1720
1721 static void ar5523_disconnect(struct usb_interface *intf)
1722 {
1723 struct ieee80211_hw *hw = usb_get_intfdata(intf);
1724 struct ar5523 *ar = hw->priv;
1725
1726 ar5523_dbg(ar, "detaching\n");
1727 set_bit(AR5523_USB_DISCONNECTED, &ar->flags);
1728
1729 ieee80211_unregister_hw(hw);
1730
1731 ar5523_cancel_rx_cmd(ar);
1732 ar5523_free_tx_cmd(ar);
1733 ar5523_free_rx_cmd(ar);
1734 ar5523_free_rx_bufs(ar);
1735
1736 destroy_workqueue(ar->wq);
1737
1738 ieee80211_free_hw(hw);
1739 usb_set_intfdata(intf, NULL);
1740 }
1741
1742 #define AR5523_DEVICE_UG(vendor, device) \
1743 { USB_DEVICE((vendor), (device)) }, \
1744 { USB_DEVICE((vendor), (device) + 1), \
1745 .driver_info = AR5523_FLAG_PRE_FIRMWARE }
1746 #define AR5523_DEVICE_UX(vendor, device) \
1747 { USB_DEVICE((vendor), (device)), \
1748 .driver_info = AR5523_FLAG_ABG }, \
1749 { USB_DEVICE((vendor), (device) + 1), \
1750 .driver_info = AR5523_FLAG_ABG|AR5523_FLAG_PRE_FIRMWARE }
1751
1752 static struct usb_device_id ar5523_id_table[] = {
1753 AR5523_DEVICE_UG(0x168c, 0x0001), /* Atheros / AR5523 */
1754 AR5523_DEVICE_UG(0x0cf3, 0x0001), /* Atheros2 / AR5523_1 */
1755 AR5523_DEVICE_UG(0x0cf3, 0x0003), /* Atheros2 / AR5523_2 */
1756 AR5523_DEVICE_UX(0x0cf3, 0x0005), /* Atheros2 / AR5523_3 */
1757 AR5523_DEVICE_UG(0x0d8e, 0x7801), /* Conceptronic / AR5523_1 */
1758 AR5523_DEVICE_UX(0x0d8e, 0x7811), /* Conceptronic / AR5523_2 */
1759 AR5523_DEVICE_UX(0x2001, 0x3a00), /* Dlink / DWLAG132 */
1760 AR5523_DEVICE_UG(0x2001, 0x3a02), /* Dlink / DWLG132 */
1761 AR5523_DEVICE_UX(0x2001, 0x3a04), /* Dlink / DWLAG122 */
1762 AR5523_DEVICE_UG(0x1690, 0x0712), /* Gigaset / AR5523 */
1763 AR5523_DEVICE_UG(0x1690, 0x0710), /* Gigaset / SMCWUSBTG */
1764 AR5523_DEVICE_UG(0x129b, 0x160c), /* Gigaset / USB stick 108
1765 (CyberTAN Technology) */
1766 AR5523_DEVICE_UG(0x16ab, 0x7801), /* Globalsun / AR5523_1 */
1767 AR5523_DEVICE_UX(0x16ab, 0x7811), /* Globalsun / AR5523_2 */
1768 AR5523_DEVICE_UG(0x0d8e, 0x7802), /* Globalsun / AR5523_3 */
1769 AR5523_DEVICE_UX(0x0846, 0x4300), /* Netgear / WG111U */
1770 AR5523_DEVICE_UG(0x0846, 0x4250), /* Netgear / WG111T */
1771 AR5523_DEVICE_UG(0x0846, 0x5f00), /* Netgear / WPN111 */
1772 AR5523_DEVICE_UG(0x157e, 0x3006), /* Umedia / AR5523_1 */
1773 AR5523_DEVICE_UX(0x157e, 0x3205), /* Umedia / AR5523_2 */
1774 AR5523_DEVICE_UG(0x157e, 0x3006), /* Umedia / TEW444UBEU */
1775 AR5523_DEVICE_UG(0x1435, 0x0826), /* Wistronneweb / AR5523_1 */
1776 AR5523_DEVICE_UX(0x1435, 0x0828), /* Wistronneweb / AR5523_2 */
1777 AR5523_DEVICE_UG(0x0cde, 0x0012), /* Zcom / AR5523 */
1778 AR5523_DEVICE_UG(0x1385, 0x4250), /* Netgear3 / WG111T (2) */
1779 AR5523_DEVICE_UG(0x1385, 0x5f00), /* Netgear / WPN111 */
1780 AR5523_DEVICE_UG(0x1385, 0x5f02), /* Netgear / WPN111 */
1781 { }
1782 };
1783 MODULE_DEVICE_TABLE(usb, ar5523_id_table);
1784
1785 static struct usb_driver ar5523_driver = {
1786 .name = "ar5523",
1787 .id_table = ar5523_id_table,
1788 .probe = ar5523_probe,
1789 .disconnect = ar5523_disconnect,
1790 };
1791
1792 static int __init ar5523_init(void)
1793 {
1794 return usb_register(&ar5523_driver);
1795 }
1796
1797 static void __exit ar5523_exit(void)
1798 {
1799 usb_deregister(&ar5523_driver);
1800 }
1801
1802 MODULE_LICENSE("Dual BSD/GPL");
1803 MODULE_FIRMWARE(AR5523_FIRMWARE_FILE);
1804
1805 module_init(ar5523_init);
1806 module_exit(ar5523_exit);
kernel source for telekom puls (alcatel/mediatek)