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wl1271: use acx_rx_config instead of join when updating filters
[deliverable/linux.git] / drivers / net / wireless / wl12xx / wl1271_main.c
1 /*
2 * This file is part of wl1271
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/platform_device.h>
26 #include <linux/interrupt.h>
27 #include <linux/firmware.h>
28 #include <linux/delay.h>
29 #include <linux/irq.h>
30 #include <linux/spi/spi.h>
31 #include <linux/crc32.h>
32 #include <linux/etherdevice.h>
33 #include <linux/vmalloc.h>
34 #include <linux/spi/wl12xx.h>
35
36 #include "wl1271.h"
37 #include "wl12xx_80211.h"
38 #include "wl1271_reg.h"
39 #include "wl1271_spi.h"
40 #include "wl1271_event.h"
41 #include "wl1271_tx.h"
42 #include "wl1271_rx.h"
43 #include "wl1271_ps.h"
44 #include "wl1271_init.h"
45 #include "wl1271_debugfs.h"
46 #include "wl1271_cmd.h"
47 #include "wl1271_boot.h"
48
49 static int wl1271_plt_init(struct wl1271 *wl)
50 {
51 int ret;
52
53 ret = wl1271_acx_init_mem_config(wl);
54 if (ret < 0)
55 return ret;
56
57 ret = wl1271_cmd_data_path(wl, wl->channel, 1);
58 if (ret < 0)
59 return ret;
60
61 return 0;
62 }
63
64 static void wl1271_disable_interrupts(struct wl1271 *wl)
65 {
66 disable_irq(wl->irq);
67 }
68
69 static void wl1271_power_off(struct wl1271 *wl)
70 {
71 wl->set_power(false);
72 }
73
74 static void wl1271_power_on(struct wl1271 *wl)
75 {
76 wl->set_power(true);
77 }
78
79 static void wl1271_fw_status(struct wl1271 *wl,
80 struct wl1271_fw_status *status)
81 {
82 u32 total = 0;
83 int i;
84
85 wl1271_spi_read(wl, FW_STATUS_ADDR, status,
86 sizeof(*status), false);
87
88 wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
89 "drv_rx_counter = %d, tx_results_counter = %d)",
90 status->intr,
91 status->fw_rx_counter,
92 status->drv_rx_counter,
93 status->tx_results_counter);
94
95 /* update number of available TX blocks */
96 for (i = 0; i < NUM_TX_QUEUES; i++) {
97 u32 cnt = status->tx_released_blks[i] - wl->tx_blocks_freed[i];
98 wl->tx_blocks_freed[i] = status->tx_released_blks[i];
99 wl->tx_blocks_available += cnt;
100 total += cnt;
101 }
102
103 /* if more blocks are available now, schedule some tx work */
104 if (total && !skb_queue_empty(&wl->tx_queue))
105 ieee80211_queue_work(wl->hw, &wl->tx_work);
106
107 /* update the host-chipset time offset */
108 wl->time_offset = jiffies_to_usecs(jiffies) - status->fw_localtime;
109 }
110
111 static void wl1271_irq_work(struct work_struct *work)
112 {
113 int ret;
114 u32 intr;
115 struct wl1271 *wl =
116 container_of(work, struct wl1271, irq_work);
117
118 mutex_lock(&wl->mutex);
119
120 wl1271_debug(DEBUG_IRQ, "IRQ work");
121
122 if (wl->state == WL1271_STATE_OFF)
123 goto out;
124
125 ret = wl1271_ps_elp_wakeup(wl, true);
126 if (ret < 0)
127 goto out;
128
129 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
130
131 wl1271_fw_status(wl, wl->fw_status);
132 intr = wl->fw_status->intr;
133 if (!intr) {
134 wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
135 goto out_sleep;
136 }
137
138 intr &= WL1271_INTR_MASK;
139
140 if (intr & (WL1271_ACX_INTR_EVENT_A |
141 WL1271_ACX_INTR_EVENT_B)) {
142 wl1271_debug(DEBUG_IRQ,
143 "WL1271_ACX_INTR_EVENT (0x%x)", intr);
144 if (intr & WL1271_ACX_INTR_EVENT_A)
145 wl1271_event_handle(wl, 0);
146 else
147 wl1271_event_handle(wl, 1);
148 }
149
150 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
151 wl1271_debug(DEBUG_IRQ,
152 "WL1271_ACX_INTR_INIT_COMPLETE");
153
154 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
155 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
156
157 if (intr & WL1271_ACX_INTR_DATA) {
158 u8 tx_res_cnt = wl->fw_status->tx_results_counter -
159 wl->tx_results_count;
160
161 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
162
163 /* check for tx results */
164 if (tx_res_cnt)
165 wl1271_tx_complete(wl, tx_res_cnt);
166
167 wl1271_rx(wl, wl->fw_status);
168 }
169
170 out_sleep:
171 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_MASK,
172 WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
173 wl1271_ps_elp_sleep(wl);
174
175 out:
176 mutex_unlock(&wl->mutex);
177 }
178
179 static irqreturn_t wl1271_irq(int irq, void *cookie)
180 {
181 struct wl1271 *wl;
182 unsigned long flags;
183
184 wl1271_debug(DEBUG_IRQ, "IRQ");
185
186 wl = cookie;
187
188 /* complete the ELP completion */
189 spin_lock_irqsave(&wl->wl_lock, flags);
190 if (wl->elp_compl) {
191 complete(wl->elp_compl);
192 wl->elp_compl = NULL;
193 }
194
195 ieee80211_queue_work(wl->hw, &wl->irq_work);
196 spin_unlock_irqrestore(&wl->wl_lock, flags);
197
198 return IRQ_HANDLED;
199 }
200
201 static int wl1271_fetch_firmware(struct wl1271 *wl)
202 {
203 const struct firmware *fw;
204 int ret;
205
206 ret = request_firmware(&fw, WL1271_FW_NAME, &wl->spi->dev);
207
208 if (ret < 0) {
209 wl1271_error("could not get firmware: %d", ret);
210 return ret;
211 }
212
213 if (fw->size % 4) {
214 wl1271_error("firmware size is not multiple of 32 bits: %zu",
215 fw->size);
216 ret = -EILSEQ;
217 goto out;
218 }
219
220 wl->fw_len = fw->size;
221 wl->fw = vmalloc(wl->fw_len);
222
223 if (!wl->fw) {
224 wl1271_error("could not allocate memory for the firmware");
225 ret = -ENOMEM;
226 goto out;
227 }
228
229 memcpy(wl->fw, fw->data, wl->fw_len);
230
231 ret = 0;
232
233 out:
234 release_firmware(fw);
235
236 return ret;
237 }
238
239 static int wl1271_fetch_nvs(struct wl1271 *wl)
240 {
241 const struct firmware *fw;
242 int ret;
243
244 ret = request_firmware(&fw, WL1271_NVS_NAME, &wl->spi->dev);
245
246 if (ret < 0) {
247 wl1271_error("could not get nvs file: %d", ret);
248 return ret;
249 }
250
251 if (fw->size % 4) {
252 wl1271_error("nvs size is not multiple of 32 bits: %zu",
253 fw->size);
254 ret = -EILSEQ;
255 goto out;
256 }
257
258 wl->nvs_len = fw->size;
259 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
260
261 if (!wl->nvs) {
262 wl1271_error("could not allocate memory for the nvs file");
263 ret = -ENOMEM;
264 goto out;
265 }
266
267 memcpy(wl->nvs, fw->data, wl->nvs_len);
268
269 ret = 0;
270
271 out:
272 release_firmware(fw);
273
274 return ret;
275 }
276
277 static void wl1271_fw_wakeup(struct wl1271 *wl)
278 {
279 u32 elp_reg;
280
281 elp_reg = ELPCTRL_WAKE_UP;
282 wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
283 }
284
285 static int wl1271_setup(struct wl1271 *wl)
286 {
287 wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
288 if (!wl->fw_status)
289 return -ENOMEM;
290
291 wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
292 if (!wl->tx_res_if) {
293 kfree(wl->fw_status);
294 return -ENOMEM;
295 }
296
297 INIT_WORK(&wl->irq_work, wl1271_irq_work);
298 INIT_WORK(&wl->tx_work, wl1271_tx_work);
299 return 0;
300 }
301
302 static int wl1271_chip_wakeup(struct wl1271 *wl)
303 {
304 struct wl1271_partition_set partition;
305 int ret = 0;
306
307 wl1271_power_on(wl);
308 msleep(WL1271_POWER_ON_SLEEP);
309 wl1271_spi_reset(wl);
310 wl1271_spi_init(wl);
311
312 /* We don't need a real memory partition here, because we only want
313 * to use the registers at this point. */
314 memset(&partition, 0, sizeof(partition));
315 partition.reg.start = REGISTERS_BASE;
316 partition.reg.size = REGISTERS_DOWN_SIZE;
317 wl1271_set_partition(wl, &partition);
318
319 /* ELP module wake up */
320 wl1271_fw_wakeup(wl);
321
322 /* whal_FwCtrl_BootSm() */
323
324 /* 0. read chip id from CHIP_ID */
325 wl->chip.id = wl1271_spi_read32(wl, CHIP_ID_B);
326
327 /* 1. check if chip id is valid */
328
329 switch (wl->chip.id) {
330 case CHIP_ID_1271_PG10:
331 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
332 wl->chip.id);
333
334 ret = wl1271_setup(wl);
335 if (ret < 0)
336 goto out;
337 break;
338 case CHIP_ID_1271_PG20:
339 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
340 wl->chip.id);
341
342 ret = wl1271_setup(wl);
343 if (ret < 0)
344 goto out;
345 break;
346 default:
347 wl1271_error("unsupported chip id: 0x%x", wl->chip.id);
348 ret = -ENODEV;
349 goto out;
350 }
351
352 if (wl->fw == NULL) {
353 ret = wl1271_fetch_firmware(wl);
354 if (ret < 0)
355 goto out;
356 }
357
358 /* No NVS from netlink, try to get it from the filesystem */
359 if (wl->nvs == NULL) {
360 ret = wl1271_fetch_nvs(wl);
361 if (ret < 0)
362 goto out;
363 }
364
365 out:
366 return ret;
367 }
368
369 struct wl1271_filter_params {
370 unsigned int filters;
371 unsigned int changed;
372 int mc_list_length;
373 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
374 };
375
376 #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
377 FIF_ALLMULTI | \
378 FIF_FCSFAIL | \
379 FIF_BCN_PRBRESP_PROMISC | \
380 FIF_CONTROL | \
381 FIF_OTHER_BSS)
382
383 static void wl1271_filter_work(struct work_struct *work)
384 {
385 struct wl1271 *wl =
386 container_of(work, struct wl1271, filter_work);
387 struct wl1271_filter_params *fp;
388 unsigned long flags;
389 bool enabled = true;
390 int ret;
391
392 /* first, get the filter parameters */
393 spin_lock_irqsave(&wl->wl_lock, flags);
394 fp = wl->filter_params;
395 wl->filter_params = NULL;
396 spin_unlock_irqrestore(&wl->wl_lock, flags);
397
398 if (!fp)
399 return;
400
401 /* then, lock the mutex without risk of lock-up */
402 mutex_lock(&wl->mutex);
403
404 if (wl->state == WL1271_STATE_OFF)
405 goto out;
406
407 ret = wl1271_ps_elp_wakeup(wl, false);
408 if (ret < 0)
409 goto out;
410
411 /* configure the mc filter regardless of the changed flags */
412 if (fp->filters & FIF_ALLMULTI)
413 enabled = false;
414
415 ret = wl1271_acx_group_address_tbl(wl, enabled,
416 fp->mc_list, fp->mc_list_length);
417 if (ret < 0)
418 goto out_sleep;
419
420 /* determine, whether supported filter values have changed */
421 if (fp->changed == 0)
422 goto out;
423
424 /* apply configured filters */
425 ret = wl1271_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
426 if (ret < 0)
427 goto out_sleep;
428
429 out_sleep:
430 wl1271_ps_elp_sleep(wl);
431
432 out:
433 mutex_unlock(&wl->mutex);
434 kfree(fp);
435 }
436
437 int wl1271_plt_start(struct wl1271 *wl)
438 {
439 int ret;
440
441 mutex_lock(&wl->mutex);
442
443 wl1271_notice("power up");
444
445 if (wl->state != WL1271_STATE_OFF) {
446 wl1271_error("cannot go into PLT state because not "
447 "in off state: %d", wl->state);
448 ret = -EBUSY;
449 goto out;
450 }
451
452 wl->state = WL1271_STATE_PLT;
453
454 ret = wl1271_chip_wakeup(wl);
455 if (ret < 0)
456 goto out;
457
458 ret = wl1271_boot(wl);
459 if (ret < 0)
460 goto out;
461
462 wl1271_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
463
464 ret = wl1271_plt_init(wl);
465 if (ret < 0)
466 goto out;
467
468 out:
469 mutex_unlock(&wl->mutex);
470
471 return ret;
472 }
473
474 int wl1271_plt_stop(struct wl1271 *wl)
475 {
476 int ret = 0;
477
478 mutex_lock(&wl->mutex);
479
480 wl1271_notice("power down");
481
482 if (wl->state != WL1271_STATE_PLT) {
483 wl1271_error("cannot power down because not in PLT "
484 "state: %d", wl->state);
485 ret = -EBUSY;
486 goto out;
487 }
488
489 wl1271_disable_interrupts(wl);
490 wl1271_power_off(wl);
491
492 wl->state = WL1271_STATE_OFF;
493
494 out:
495 mutex_unlock(&wl->mutex);
496
497 return ret;
498 }
499
500
501 static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
502 {
503 struct wl1271 *wl = hw->priv;
504
505 skb_queue_tail(&wl->tx_queue, skb);
506
507 /*
508 * The chip specific setup must run before the first TX packet -
509 * before that, the tx_work will not be initialized!
510 */
511
512 ieee80211_queue_work(wl->hw, &wl->tx_work);
513
514 /*
515 * The workqueue is slow to process the tx_queue and we need stop
516 * the queue here, otherwise the queue will get too long.
517 */
518 if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_MAX_LENGTH) {
519 ieee80211_stop_queues(wl->hw);
520
521 /*
522 * FIXME: this is racy, the variable is not properly
523 * protected. Maybe fix this by removing the stupid
524 * variable altogether and checking the real queue state?
525 */
526 wl->tx_queue_stopped = true;
527 }
528
529 return NETDEV_TX_OK;
530 }
531
532 static int wl1271_op_start(struct ieee80211_hw *hw)
533 {
534 struct wl1271 *wl = hw->priv;
535 int ret = 0;
536
537 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
538
539 mutex_lock(&wl->mutex);
540
541 if (wl->state != WL1271_STATE_OFF) {
542 wl1271_error("cannot start because not in off state: %d",
543 wl->state);
544 ret = -EBUSY;
545 goto out;
546 }
547
548 ret = wl1271_chip_wakeup(wl);
549 if (ret < 0)
550 goto out;
551
552 ret = wl1271_boot(wl);
553 if (ret < 0)
554 goto out;
555
556 ret = wl1271_hw_init(wl);
557 if (ret < 0)
558 goto out;
559
560 wl->state = WL1271_STATE_ON;
561
562 wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
563
564 out:
565 if (ret < 0)
566 wl1271_power_off(wl);
567
568 mutex_unlock(&wl->mutex);
569
570 return ret;
571 }
572
573 static void wl1271_op_stop(struct ieee80211_hw *hw)
574 {
575 struct wl1271 *wl = hw->priv;
576 unsigned long flags;
577 int i;
578
579 wl1271_info("down");
580
581 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
582
583 /* complete/cancel ongoing work */
584 cancel_work_sync(&wl->filter_work);
585 spin_lock_irqsave(&wl->wl_lock, flags);
586 kfree(wl->filter_params);
587 wl->filter_params = NULL;
588 spin_unlock_irqrestore(&wl->wl_lock, flags);
589
590 mutex_lock(&wl->mutex);
591
592 WARN_ON(wl->state != WL1271_STATE_ON);
593
594 if (wl->scanning) {
595 mutex_unlock(&wl->mutex);
596 ieee80211_scan_completed(wl->hw, true);
597 mutex_lock(&wl->mutex);
598 wl->scanning = false;
599 }
600
601 wl->state = WL1271_STATE_OFF;
602
603 wl1271_disable_interrupts(wl);
604
605 mutex_unlock(&wl->mutex);
606
607 cancel_work_sync(&wl->irq_work);
608 cancel_work_sync(&wl->tx_work);
609 cancel_work_sync(&wl->filter_work);
610
611 mutex_lock(&wl->mutex);
612
613 /* let's notify MAC80211 about the remaining pending TX frames */
614 wl1271_tx_flush(wl);
615 wl1271_power_off(wl);
616
617 memset(wl->bssid, 0, ETH_ALEN);
618 memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
619 wl->ssid_len = 0;
620 wl->listen_int = 1;
621 wl->bss_type = MAX_BSS_TYPE;
622 wl->band = IEEE80211_BAND_2GHZ;
623
624 wl->rx_counter = 0;
625 wl->elp = false;
626 wl->psm = 0;
627 wl->tx_queue_stopped = false;
628 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
629 wl->tx_blocks_available = 0;
630 wl->tx_results_count = 0;
631 wl->tx_packets_count = 0;
632 wl->tx_security_last_seq = 0;
633 wl->tx_security_seq_16 = 0;
634 wl->tx_security_seq_32 = 0;
635 wl->time_offset = 0;
636 wl->session_counter = 0;
637 wl->joined = false;
638
639 for (i = 0; i < NUM_TX_QUEUES; i++)
640 wl->tx_blocks_freed[i] = 0;
641
642 wl1271_debugfs_reset(wl);
643 mutex_unlock(&wl->mutex);
644 }
645
646 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
647 struct ieee80211_if_init_conf *conf)
648 {
649 struct wl1271 *wl = hw->priv;
650 int ret = 0;
651
652 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
653 conf->type, conf->mac_addr);
654
655 mutex_lock(&wl->mutex);
656 if (wl->vif) {
657 ret = -EBUSY;
658 goto out;
659 }
660
661 wl->vif = conf->vif;
662
663 switch (conf->type) {
664 case NL80211_IFTYPE_STATION:
665 wl->bss_type = BSS_TYPE_STA_BSS;
666 break;
667 case NL80211_IFTYPE_ADHOC:
668 wl->bss_type = BSS_TYPE_IBSS;
669 break;
670 default:
671 ret = -EOPNOTSUPP;
672 goto out;
673 }
674
675 /* FIXME: what if conf->mac_addr changes? */
676
677 out:
678 mutex_unlock(&wl->mutex);
679 return ret;
680 }
681
682 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
683 struct ieee80211_if_init_conf *conf)
684 {
685 struct wl1271 *wl = hw->priv;
686
687 mutex_lock(&wl->mutex);
688 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
689 wl->vif = NULL;
690 mutex_unlock(&wl->mutex);
691 }
692
693 #if 0
694 static int wl1271_op_config_interface(struct ieee80211_hw *hw,
695 struct ieee80211_vif *vif,
696 struct ieee80211_if_conf *conf)
697 {
698 struct wl1271 *wl = hw->priv;
699 struct sk_buff *beacon;
700 int ret;
701
702 wl1271_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %pM",
703 conf->bssid);
704 wl1271_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid,
705 conf->ssid_len);
706
707 mutex_lock(&wl->mutex);
708
709 ret = wl1271_ps_elp_wakeup(wl, false);
710 if (ret < 0)
711 goto out;
712
713 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
714
715 ret = wl1271_cmd_build_null_data(wl);
716 if (ret < 0)
717 goto out_sleep;
718
719 wl->ssid_len = conf->ssid_len;
720 if (wl->ssid_len)
721 memcpy(wl->ssid, conf->ssid, wl->ssid_len);
722
723 if (wl->bss_type != BSS_TYPE_IBSS) {
724 ret = wl1271_cmd_join(wl);
725 if (ret < 0)
726 goto out_sleep;
727 }
728
729 if (conf->changed & IEEE80211_IFCC_BEACON) {
730 beacon = ieee80211_beacon_get(hw, vif);
731 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
732 beacon->data, beacon->len);
733
734 if (ret < 0) {
735 dev_kfree_skb(beacon);
736 goto out_sleep;
737 }
738
739 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE,
740 beacon->data, beacon->len);
741
742 dev_kfree_skb(beacon);
743
744 if (ret < 0)
745 goto out_sleep;
746
747 ret = wl1271_cmd_join(wl);
748
749 if (ret < 0)
750 goto out_sleep;
751 }
752
753 out_sleep:
754 wl1271_ps_elp_sleep(wl);
755
756 out:
757 mutex_unlock(&wl->mutex);
758
759 return ret;
760 }
761 #endif
762
763 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
764 {
765 struct wl1271 *wl = hw->priv;
766 struct ieee80211_conf *conf = &hw->conf;
767 int channel, ret = 0;
768
769 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
770
771 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
772 channel,
773 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
774 conf->power_level);
775
776 mutex_lock(&wl->mutex);
777
778 wl->band = conf->channel->band;
779
780 ret = wl1271_ps_elp_wakeup(wl, false);
781 if (ret < 0)
782 goto out;
783
784 if (channel != wl->channel) {
785 u8 old_channel = wl->channel;
786 wl->channel = channel;
787
788 ret = wl1271_cmd_join(wl);
789 if (ret < 0) {
790 wl->channel = old_channel;
791 goto out_sleep;
792 }
793 }
794
795 ret = wl1271_cmd_build_null_data(wl);
796 if (ret < 0)
797 goto out_sleep;
798
799 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
800 wl1271_info("psm enabled");
801
802 wl->psm_requested = true;
803
804 /*
805 * We enter PSM only if we're already associated.
806 * If we're not, we'll enter it when joining an SSID,
807 * through the bss_info_changed() hook.
808 */
809 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
810 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
811 wl->psm_requested) {
812 wl1271_info("psm disabled");
813
814 wl->psm_requested = false;
815
816 if (wl->psm)
817 ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
818 }
819
820 if (conf->power_level != wl->power_level) {
821 ret = wl1271_acx_tx_power(wl, conf->power_level);
822 if (ret < 0)
823 goto out;
824
825 wl->power_level = conf->power_level;
826 }
827
828 out_sleep:
829 wl1271_ps_elp_sleep(wl);
830
831 out:
832 mutex_unlock(&wl->mutex);
833
834 return ret;
835 }
836
837 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
838 struct dev_addr_list *mc_list)
839 {
840 struct wl1271 *wl = hw->priv;
841 struct wl1271_filter_params *fp;
842 unsigned long flags;
843 int i;
844
845 /*
846 * FIXME: we should return a hash that will be passed to
847 * configure_filter() instead of saving everything in the context.
848 */
849
850 fp = kzalloc(sizeof(*fp), GFP_KERNEL);
851 if (!fp) {
852 wl1271_error("Out of memory setting filters.");
853 return 0;
854 }
855
856 /* update multicast filtering parameters */
857 if (mc_count > ACX_MC_ADDRESS_GROUP_MAX) {
858 mc_count = 0;
859 fp->filters |= FIF_ALLMULTI;
860 }
861
862 fp->mc_list_length = 0;
863 for (i = 0; i < mc_count; i++) {
864 if (mc_list->da_addrlen == ETH_ALEN) {
865 memcpy(fp->mc_list[fp->mc_list_length],
866 mc_list->da_addr, ETH_ALEN);
867 fp->mc_list_length++;
868 } else
869 wl1271_warning("Unknown mc address length.");
870 }
871
872 /* FIXME: We still need to set our filters properly */
873
874 spin_lock_irqsave(&wl->wl_lock, flags);
875 kfree(wl->filter_params);
876 wl->filter_params = fp;
877 spin_unlock_irqrestore(&wl->wl_lock, flags);
878
879 return 1;
880 }
881
882 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
883 unsigned int changed,
884 unsigned int *total, u64 multicast)
885 {
886 struct wl1271 *wl = hw->priv;
887
888 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
889
890 *total &= WL1271_SUPPORTED_FILTERS;
891 changed &= WL1271_SUPPORTED_FILTERS;
892
893 if (!multicast)
894 return;
895
896 /*
897 * FIXME: for now we are still using a workqueue for filter
898 * configuration, but with the new mac80211, this is not needed,
899 * since configure_filter can now sleep. We now have
900 * prepare_multicast, which needs to be atomic instead.
901 */
902
903 /* store current filter config */
904 wl->filter_params->filters = *total;
905 wl->filter_params->changed = changed;
906
907 ieee80211_queue_work(wl->hw, &wl->filter_work);
908 }
909
910 static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
911 struct ieee80211_vif *vif,
912 struct ieee80211_sta *sta,
913 struct ieee80211_key_conf *key_conf)
914 {
915 struct wl1271 *wl = hw->priv;
916 const u8 *addr;
917 int ret;
918 u32 tx_seq_32 = 0;
919 u16 tx_seq_16 = 0;
920 u8 key_type;
921
922 static const u8 bcast_addr[ETH_ALEN] =
923 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
924
925 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
926
927 addr = sta ? sta->addr : bcast_addr;
928
929 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
930 wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
931 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
932 key_conf->alg, key_conf->keyidx,
933 key_conf->keylen, key_conf->flags);
934 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
935
936 if (is_zero_ether_addr(addr)) {
937 /* We dont support TX only encryption */
938 ret = -EOPNOTSUPP;
939 goto out;
940 }
941
942 mutex_lock(&wl->mutex);
943
944 ret = wl1271_ps_elp_wakeup(wl, false);
945 if (ret < 0)
946 goto out_unlock;
947
948 switch (key_conf->alg) {
949 case ALG_WEP:
950 key_type = KEY_WEP;
951
952 key_conf->hw_key_idx = key_conf->keyidx;
953 break;
954 case ALG_TKIP:
955 key_type = KEY_TKIP;
956
957 key_conf->hw_key_idx = key_conf->keyidx;
958 tx_seq_32 = wl->tx_security_seq_32;
959 tx_seq_16 = wl->tx_security_seq_16;
960 break;
961 case ALG_CCMP:
962 key_type = KEY_AES;
963
964 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
965 tx_seq_32 = wl->tx_security_seq_32;
966 tx_seq_16 = wl->tx_security_seq_16;
967 break;
968 default:
969 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
970
971 ret = -EOPNOTSUPP;
972 goto out_sleep;
973 }
974
975 switch (cmd) {
976 case SET_KEY:
977 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
978 key_conf->keyidx, key_type,
979 key_conf->keylen, key_conf->key,
980 addr, tx_seq_32, tx_seq_16);
981 if (ret < 0) {
982 wl1271_error("Could not add or replace key");
983 goto out_sleep;
984 }
985 break;
986
987 case DISABLE_KEY:
988 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
989 key_conf->keyidx, key_type,
990 key_conf->keylen, key_conf->key,
991 addr, 0, 0);
992 if (ret < 0) {
993 wl1271_error("Could not remove key");
994 goto out_sleep;
995 }
996 break;
997
998 default:
999 wl1271_error("Unsupported key cmd 0x%x", cmd);
1000 ret = -EOPNOTSUPP;
1001 goto out_sleep;
1002
1003 break;
1004 }
1005
1006 out_sleep:
1007 wl1271_ps_elp_sleep(wl);
1008
1009 out_unlock:
1010 mutex_unlock(&wl->mutex);
1011
1012 out:
1013 return ret;
1014 }
1015
1016 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
1017 struct cfg80211_scan_request *req)
1018 {
1019 struct wl1271 *wl = hw->priv;
1020 int ret;
1021 u8 *ssid = NULL;
1022 size_t ssid_len = 0;
1023
1024 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
1025
1026 if (req->n_ssids) {
1027 ssid = req->ssids[0].ssid;
1028 ssid_len = req->ssids[0].ssid_len;
1029 }
1030
1031 mutex_lock(&wl->mutex);
1032
1033 ret = wl1271_ps_elp_wakeup(wl, false);
1034 if (ret < 0)
1035 goto out;
1036
1037 ret = wl1271_cmd_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1038
1039 wl1271_ps_elp_sleep(wl);
1040
1041 out:
1042 mutex_unlock(&wl->mutex);
1043
1044 return ret;
1045 }
1046
1047 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1048 {
1049 struct wl1271 *wl = hw->priv;
1050 int ret;
1051
1052 mutex_lock(&wl->mutex);
1053
1054 ret = wl1271_ps_elp_wakeup(wl, false);
1055 if (ret < 0)
1056 goto out;
1057
1058 ret = wl1271_acx_rts_threshold(wl, (u16) value);
1059 if (ret < 0)
1060 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
1061
1062 wl1271_ps_elp_sleep(wl);
1063
1064 out:
1065 mutex_unlock(&wl->mutex);
1066
1067 return ret;
1068 }
1069
1070 static u32 wl1271_enabled_rates_get(struct wl1271 *wl, u64 basic_rate_set)
1071 {
1072 struct ieee80211_supported_band *band;
1073 u32 enabled_rates = 0;
1074 int bit;
1075
1076 band = wl->hw->wiphy->bands[wl->band];
1077 for (bit = 0; bit < band->n_bitrates; bit++) {
1078 if (basic_rate_set & 0x1)
1079 enabled_rates |= band->bitrates[bit].hw_value;
1080 basic_rate_set >>= 1;
1081 }
1082
1083 return enabled_rates;
1084 }
1085
1086 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
1087 struct ieee80211_vif *vif,
1088 struct ieee80211_bss_conf *bss_conf,
1089 u32 changed)
1090 {
1091 enum wl1271_cmd_ps_mode mode;
1092 struct wl1271 *wl = hw->priv;
1093 int ret;
1094
1095 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1096
1097 mutex_lock(&wl->mutex);
1098
1099 ret = wl1271_ps_elp_wakeup(wl, false);
1100 if (ret < 0)
1101 goto out;
1102
1103 if (changed & BSS_CHANGED_ASSOC) {
1104 if (bss_conf->assoc) {
1105 wl->beacon_int = bss_conf->beacon_int;
1106 wl->dtim_period = bss_conf->dtim_period;
1107 wl->aid = bss_conf->aid;
1108
1109 ret = wl1271_cmd_join(wl);
1110 if (ret < 0) {
1111 wl1271_warning("Association configuration "
1112 "failed %d", ret);
1113 goto out_sleep;
1114 }
1115
1116 ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1117 if (ret < 0)
1118 goto out_sleep;
1119
1120 ret = wl1271_acx_aid(wl, wl->aid);
1121 if (ret < 0)
1122 goto out_sleep;
1123
1124 /* If we want to go in PSM but we're not there yet */
1125 if (wl->psm_requested && !wl->psm) {
1126 mode = STATION_POWER_SAVE_MODE;
1127 ret = wl1271_ps_set_mode(wl, mode);
1128 if (ret < 0)
1129 goto out_sleep;
1130 }
1131 } else {
1132 /* use defaults when not associated */
1133 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
1134 wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD;
1135 wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
1136 wl->aid = 0;
1137 }
1138
1139 }
1140
1141 if (changed & BSS_CHANGED_ERP_SLOT) {
1142 if (bss_conf->use_short_slot)
1143 ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1144 else
1145 ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1146 if (ret < 0) {
1147 wl1271_warning("Set slot time failed %d", ret);
1148 goto out_sleep;
1149 }
1150 }
1151
1152 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1153 if (bss_conf->use_short_preamble)
1154 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1155 else
1156 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1157 }
1158
1159 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1160 if (bss_conf->use_cts_prot)
1161 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1162 else
1163 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1164 if (ret < 0) {
1165 wl1271_warning("Set ctsprotect failed %d", ret);
1166 goto out_sleep;
1167 }
1168 }
1169
1170 if (changed & BSS_CHANGED_BASIC_RATES) {
1171 wl->basic_rate_set = wl1271_enabled_rates_get(
1172 wl, bss_conf->basic_rates);
1173 ret = wl1271_acx_rate_policies(wl, wl->basic_rate_set);
1174
1175 if (ret < 0) {
1176 wl1271_warning("Set rate policies failed %d", ret);
1177 goto out_sleep;
1178 }
1179 ret = wl1271_cmd_join(wl);
1180 if (ret < 0) {
1181 wl1271_warning("Join with new basic rate "
1182 "set failed %d", ret);
1183 goto out_sleep;
1184 }
1185 }
1186
1187 out_sleep:
1188 wl1271_ps_elp_sleep(wl);
1189
1190 out:
1191 mutex_unlock(&wl->mutex);
1192 }
1193
1194
1195 /* can't be const, mac80211 writes to this */
1196 static struct ieee80211_rate wl1271_rates[] = {
1197 { .bitrate = 10,
1198 .hw_value = 0x1,
1199 .hw_value_short = 0x1, },
1200 { .bitrate = 20,
1201 .hw_value = 0x2,
1202 .hw_value_short = 0x2,
1203 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1204 { .bitrate = 55,
1205 .hw_value = 0x4,
1206 .hw_value_short = 0x4,
1207 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1208 { .bitrate = 110,
1209 .hw_value = 0x20,
1210 .hw_value_short = 0x20,
1211 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1212 { .bitrate = 60,
1213 .hw_value = 0x8,
1214 .hw_value_short = 0x8, },
1215 { .bitrate = 90,
1216 .hw_value = 0x10,
1217 .hw_value_short = 0x10, },
1218 { .bitrate = 120,
1219 .hw_value = 0x40,
1220 .hw_value_short = 0x40, },
1221 { .bitrate = 180,
1222 .hw_value = 0x80,
1223 .hw_value_short = 0x80, },
1224 { .bitrate = 240,
1225 .hw_value = 0x200,
1226 .hw_value_short = 0x200, },
1227 { .bitrate = 360,
1228 .hw_value = 0x400,
1229 .hw_value_short = 0x400, },
1230 { .bitrate = 480,
1231 .hw_value = 0x800,
1232 .hw_value_short = 0x800, },
1233 { .bitrate = 540,
1234 .hw_value = 0x1000,
1235 .hw_value_short = 0x1000, },
1236 };
1237
1238 /* can't be const, mac80211 writes to this */
1239 static struct ieee80211_channel wl1271_channels[] = {
1240 { .hw_value = 1, .center_freq = 2412},
1241 { .hw_value = 2, .center_freq = 2417},
1242 { .hw_value = 3, .center_freq = 2422},
1243 { .hw_value = 4, .center_freq = 2427},
1244 { .hw_value = 5, .center_freq = 2432},
1245 { .hw_value = 6, .center_freq = 2437},
1246 { .hw_value = 7, .center_freq = 2442},
1247 { .hw_value = 8, .center_freq = 2447},
1248 { .hw_value = 9, .center_freq = 2452},
1249 { .hw_value = 10, .center_freq = 2457},
1250 { .hw_value = 11, .center_freq = 2462},
1251 { .hw_value = 12, .center_freq = 2467},
1252 { .hw_value = 13, .center_freq = 2472},
1253 };
1254
1255 /* can't be const, mac80211 writes to this */
1256 static struct ieee80211_supported_band wl1271_band_2ghz = {
1257 .channels = wl1271_channels,
1258 .n_channels = ARRAY_SIZE(wl1271_channels),
1259 .bitrates = wl1271_rates,
1260 .n_bitrates = ARRAY_SIZE(wl1271_rates),
1261 };
1262
1263 static const struct ieee80211_ops wl1271_ops = {
1264 .start = wl1271_op_start,
1265 .stop = wl1271_op_stop,
1266 .add_interface = wl1271_op_add_interface,
1267 .remove_interface = wl1271_op_remove_interface,
1268 .config = wl1271_op_config,
1269 /* .config_interface = wl1271_op_config_interface, */
1270 .prepare_multicast = wl1271_op_prepare_multicast,
1271 .configure_filter = wl1271_op_configure_filter,
1272 .tx = wl1271_op_tx,
1273 .set_key = wl1271_op_set_key,
1274 .hw_scan = wl1271_op_hw_scan,
1275 .bss_info_changed = wl1271_op_bss_info_changed,
1276 .set_rts_threshold = wl1271_op_set_rts_threshold,
1277 };
1278
1279 static int wl1271_register_hw(struct wl1271 *wl)
1280 {
1281 int ret;
1282
1283 if (wl->mac80211_registered)
1284 return 0;
1285
1286 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1287
1288 ret = ieee80211_register_hw(wl->hw);
1289 if (ret < 0) {
1290 wl1271_error("unable to register mac80211 hw: %d", ret);
1291 return ret;
1292 }
1293
1294 wl->mac80211_registered = true;
1295
1296 wl1271_notice("loaded");
1297
1298 return 0;
1299 }
1300
1301 static int wl1271_init_ieee80211(struct wl1271 *wl)
1302 {
1303 /* The tx descriptor buffer and the TKIP space. */
1304 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
1305 sizeof(struct wl1271_tx_hw_descr);
1306
1307 /* unit us */
1308 /* FIXME: find a proper value */
1309 wl->hw->channel_change_time = 10000;
1310
1311 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1312 IEEE80211_HW_NOISE_DBM |
1313 IEEE80211_HW_BEACON_FILTER;
1314
1315 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1316 wl->hw->wiphy->max_scan_ssids = 1;
1317 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
1318
1319 SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1320
1321 return 0;
1322 }
1323
1324 static void wl1271_device_release(struct device *dev)
1325 {
1326
1327 }
1328
1329 static struct platform_device wl1271_device = {
1330 .name = "wl1271",
1331 .id = -1,
1332
1333 /* device model insists to have a release function */
1334 .dev = {
1335 .release = wl1271_device_release,
1336 },
1337 };
1338
1339 #define WL1271_DEFAULT_CHANNEL 0
1340 static int __devinit wl1271_probe(struct spi_device *spi)
1341 {
1342 struct wl12xx_platform_data *pdata;
1343 struct ieee80211_hw *hw;
1344 struct wl1271 *wl;
1345 int ret, i;
1346 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1347
1348 pdata = spi->dev.platform_data;
1349 if (!pdata) {
1350 wl1271_error("no platform data");
1351 return -ENODEV;
1352 }
1353
1354 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
1355 if (!hw) {
1356 wl1271_error("could not alloc ieee80211_hw");
1357 return -ENOMEM;
1358 }
1359
1360 wl = hw->priv;
1361 memset(wl, 0, sizeof(*wl));
1362
1363 wl->hw = hw;
1364 dev_set_drvdata(&spi->dev, wl);
1365 wl->spi = spi;
1366
1367 skb_queue_head_init(&wl->tx_queue);
1368
1369 INIT_WORK(&wl->filter_work, wl1271_filter_work);
1370 INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
1371 wl->channel = WL1271_DEFAULT_CHANNEL;
1372 wl->scanning = false;
1373 wl->default_key = 0;
1374 wl->listen_int = 1;
1375 wl->rx_counter = 0;
1376 wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1377 wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1378 wl->elp = false;
1379 wl->psm = 0;
1380 wl->psm_requested = false;
1381 wl->tx_queue_stopped = false;
1382 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1383 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
1384 wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD;
1385 wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
1386 wl->band = IEEE80211_BAND_2GHZ;
1387 wl->vif = NULL;
1388 wl->joined = false;
1389
1390 for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
1391 wl->tx_frames[i] = NULL;
1392
1393 spin_lock_init(&wl->wl_lock);
1394
1395 /*
1396 * In case our MAC address is not correctly set,
1397 * we use a random but Nokia MAC.
1398 */
1399 memcpy(wl->mac_addr, nokia_oui, 3);
1400 get_random_bytes(wl->mac_addr + 3, 3);
1401
1402 wl->state = WL1271_STATE_OFF;
1403 mutex_init(&wl->mutex);
1404
1405 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1406 if (!wl->rx_descriptor) {
1407 wl1271_error("could not allocate memory for rx descriptor");
1408 ret = -ENOMEM;
1409 goto out_free;
1410 }
1411
1412 /* This is the only SPI value that we need to set here, the rest
1413 * comes from the board-peripherals file */
1414 spi->bits_per_word = 32;
1415
1416 ret = spi_setup(spi);
1417 if (ret < 0) {
1418 wl1271_error("spi_setup failed");
1419 goto out_free;
1420 }
1421
1422 wl->set_power = pdata->set_power;
1423 if (!wl->set_power) {
1424 wl1271_error("set power function missing in platform data");
1425 ret = -ENODEV;
1426 goto out_free;
1427 }
1428
1429 wl->irq = spi->irq;
1430 if (wl->irq < 0) {
1431 wl1271_error("irq missing in platform data");
1432 ret = -ENODEV;
1433 goto out_free;
1434 }
1435
1436 ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
1437 if (ret < 0) {
1438 wl1271_error("request_irq() failed: %d", ret);
1439 goto out_free;
1440 }
1441
1442 set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1443
1444 disable_irq(wl->irq);
1445
1446 ret = platform_device_register(&wl1271_device);
1447 if (ret) {
1448 wl1271_error("couldn't register platform device");
1449 goto out_irq;
1450 }
1451 dev_set_drvdata(&wl1271_device.dev, wl);
1452
1453 ret = wl1271_init_ieee80211(wl);
1454 if (ret)
1455 goto out_platform;
1456
1457 ret = wl1271_register_hw(wl);
1458 if (ret)
1459 goto out_platform;
1460
1461 wl1271_debugfs_init(wl);
1462
1463 wl1271_notice("initialized");
1464
1465 return 0;
1466
1467 out_platform:
1468 platform_device_unregister(&wl1271_device);
1469
1470 out_irq:
1471 free_irq(wl->irq, wl);
1472
1473 out_free:
1474 kfree(wl->rx_descriptor);
1475 wl->rx_descriptor = NULL;
1476
1477 ieee80211_free_hw(hw);
1478
1479 return ret;
1480 }
1481
1482 static int __devexit wl1271_remove(struct spi_device *spi)
1483 {
1484 struct wl1271 *wl = dev_get_drvdata(&spi->dev);
1485
1486 ieee80211_unregister_hw(wl->hw);
1487
1488 wl1271_debugfs_exit(wl);
1489 platform_device_unregister(&wl1271_device);
1490 free_irq(wl->irq, wl);
1491 kfree(wl->target_mem_map);
1492 vfree(wl->fw);
1493 wl->fw = NULL;
1494 kfree(wl->nvs);
1495 wl->nvs = NULL;
1496
1497 kfree(wl->rx_descriptor);
1498 wl->rx_descriptor = NULL;
1499
1500 kfree(wl->fw_status);
1501 kfree(wl->tx_res_if);
1502
1503 ieee80211_free_hw(wl->hw);
1504
1505 return 0;
1506 }
1507
1508
1509 static struct spi_driver wl1271_spi_driver = {
1510 .driver = {
1511 .name = "wl1271",
1512 .bus = &spi_bus_type,
1513 .owner = THIS_MODULE,
1514 },
1515
1516 .probe = wl1271_probe,
1517 .remove = __devexit_p(wl1271_remove),
1518 };
1519
1520 static int __init wl1271_init(void)
1521 {
1522 int ret;
1523
1524 ret = spi_register_driver(&wl1271_spi_driver);
1525 if (ret < 0) {
1526 wl1271_error("failed to register spi driver: %d", ret);
1527 goto out;
1528 }
1529
1530 out:
1531 return ret;
1532 }
1533
1534 static void __exit wl1271_exit(void)
1535 {
1536 spi_unregister_driver(&wl1271_spi_driver);
1537
1538 wl1271_notice("unloaded");
1539 }
1540
1541 module_init(wl1271_init);
1542 module_exit(wl1271_exit);
1543
1544 MODULE_LICENSE("GPL");
1545 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
1546 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
Linux kernel - Deliverables
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