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wl1271: Add connection monitoring configuration
[deliverable/linux.git] / drivers / net / wireless / wl12xx / wl1271_main.c
CommitLineData
f5fc0f86
LC		 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>
1fba4974 33#include <linux/vmalloc.h>
f5fc0f86
LC		 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
49static 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
64static void wl1271_disable_interrupts(struct wl1271 *wl)
65{
66 disable_irq(wl->irq);
67}
68
69static void wl1271_power_off(struct wl1271 *wl)
70{
71 wl->set_power(false);
72}
73
74static void wl1271_power_on(struct wl1271 *wl)
75{
76 wl->set_power(true);
77}
78
79static void wl1271_fw_status(struct wl1271 *wl, struct wl1271_fw_status *status)
80{
81 u32 total = 0;
82 int i;
83
84 /*
85 * FIXME: Reading the FW status directly from the registers seems to
86 * be the right thing to do, but it doesn't work. And in the
87 * reference driver, there is a workaround called
88 * USE_SDIO_24M_WORKAROUND, which reads the status from memory
89 * instead, so we do the same here.
90 */
91
92 wl1271_spi_mem_read(wl, STATUS_MEM_ADDRESS, status, sizeof(*status));
93
94 wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
95 "drv_rx_counter = %d, tx_results_counter = %d)",
96 status->intr,
97 status->fw_rx_counter,
98 status->drv_rx_counter,
99 status->tx_results_counter);
100
101 /* update number of available TX blocks */
102 for (i = 0; i < NUM_TX_QUEUES; i++) {
103 u32 cnt = status->tx_released_blks[i] - wl->tx_blocks_freed[i];
104 wl->tx_blocks_freed[i] = status->tx_released_blks[i];
105 wl->tx_blocks_available += cnt;
106 total += cnt;
107 }
108
109 /* if more blocks are available now, schedule some tx work */
110 if (total && !skb_queue_empty(&wl->tx_queue))
a64b07e8 111 ieee80211_queue_work(wl->hw, &wl->tx_work);
f5fc0f86
LC		 112
113 /* update the host-chipset time offset */
114 wl->time_offset = jiffies_to_usecs(jiffies) - status->fw_localtime;
115}
116
117#define WL1271_IRQ_MAX_LOOPS 10
118static void wl1271_irq_work(struct work_struct *work)
119{
120 u32 intr, ctr = WL1271_IRQ_MAX_LOOPS;
121 int ret;
122 struct wl1271 *wl =
123 container_of(work, struct wl1271, irq_work);
124
125 mutex_lock(&wl->mutex);
126
127 wl1271_debug(DEBUG_IRQ, "IRQ work");
128
129 if (wl->state == WL1271_STATE_OFF)
130 goto out;
131
132 ret = wl1271_ps_elp_wakeup(wl, true);
133 if (ret < 0)
134 goto out;
135
136 wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
137
138 intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
139 if (!intr) {
140 wl1271_debug(DEBUG_IRQ, "Zero interrupt received.");
141 goto out_sleep;
142 }
143
144 intr &= WL1271_INTR_MASK;
145
146 do {
147 wl1271_fw_status(wl, wl->fw_status);
148
149
150 if (intr & (WL1271_ACX_INTR_EVENT_A |
151 WL1271_ACX_INTR_EVENT_B)) {
152 wl1271_debug(DEBUG_IRQ,
153 "WL1271_ACX_INTR_EVENT (0x%x)", intr);
154 if (intr & WL1271_ACX_INTR_EVENT_A)
155 wl1271_event_handle(wl, 0);
156 else
157 wl1271_event_handle(wl, 1);
158 }
159
160 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
161 wl1271_debug(DEBUG_IRQ,
162 "WL1271_ACX_INTR_INIT_COMPLETE");
163
164 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
165 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
166
167 if (intr & WL1271_ACX_INTR_DATA) {
168 u8 tx_res_cnt = wl->fw_status->tx_results_counter -
169 wl->tx_results_count;
170
171 wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
172
173 /* check for tx results */
174 if (tx_res_cnt)
175 wl1271_tx_complete(wl, tx_res_cnt);
176
177 wl1271_rx(wl, wl->fw_status);
178 }
179
180 intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
181 intr &= WL1271_INTR_MASK;
182 } while (intr && --ctr);
183
184out_sleep:
73d0a13c
LC		 185 wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
186 WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
f5fc0f86
LC		 187 wl1271_ps_elp_sleep(wl);
188
189out:
190 mutex_unlock(&wl->mutex);
191}
192
193static irqreturn_t wl1271_irq(int irq, void *cookie)
194{
195 struct wl1271 *wl;
196 unsigned long flags;
197
198 wl1271_debug(DEBUG_IRQ, "IRQ");
199
200 wl = cookie;
201
202 /* complete the ELP completion */
203 spin_lock_irqsave(&wl->wl_lock, flags);
204 if (wl->elp_compl) {
205 complete(wl->elp_compl);
206 wl->elp_compl = NULL;
207 }
208
a64b07e8 209 ieee80211_queue_work(wl->hw, &wl->irq_work);
f5fc0f86
LC		 210 spin_unlock_irqrestore(&wl->wl_lock, flags);
211
212 return IRQ_HANDLED;
213}
214
215static int wl1271_fetch_firmware(struct wl1271 *wl)
216{
217 const struct firmware *fw;
218 int ret;
219
220 ret = request_firmware(&fw, WL1271_FW_NAME, &wl->spi->dev);
221
222 if (ret < 0) {
223 wl1271_error("could not get firmware: %d", ret);
224 return ret;
225 }
226
227 if (fw->size % 4) {
228 wl1271_error("firmware size is not multiple of 32 bits: %zu",
229 fw->size);
230 ret = -EILSEQ;
231 goto out;
232 }
233
234 wl->fw_len = fw->size;
1fba4974 235 wl->fw = vmalloc(wl->fw_len);
f5fc0f86
LC		 236
237 if (!wl->fw) {
238 wl1271_error("could not allocate memory for the firmware");
239 ret = -ENOMEM;
240 goto out;
241 }
242
243 memcpy(wl->fw, fw->data, wl->fw_len);
244
245 ret = 0;
246
247out:
248 release_firmware(fw);
249
250 return ret;
251}
252
253static int wl1271_fetch_nvs(struct wl1271 *wl)
254{
255 const struct firmware *fw;
256 int ret;
257
258 ret = request_firmware(&fw, WL1271_NVS_NAME, &wl->spi->dev);
259
260 if (ret < 0) {
261 wl1271_error("could not get nvs file: %d", ret);
262 return ret;
263 }
264
265 if (fw->size % 4) {
266 wl1271_error("nvs size is not multiple of 32 bits: %zu",
267 fw->size);
268 ret = -EILSEQ;
269 goto out;
270 }
271
272 wl->nvs_len = fw->size;
273 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
274
275 if (!wl->nvs) {
276 wl1271_error("could not allocate memory for the nvs file");
277 ret = -ENOMEM;
278 goto out;
279 }
280
281 memcpy(wl->nvs, fw->data, wl->nvs_len);
282
283 ret = 0;
284
285out:
286 release_firmware(fw);
287
288 return ret;
289}
290
291static void wl1271_fw_wakeup(struct wl1271 *wl)
292{
293 u32 elp_reg;
294
295 elp_reg = ELPCTRL_WAKE_UP;
296 wl1271_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
297}
298
299static int wl1271_setup(struct wl1271 *wl)
300{
301 wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL);
302 if (!wl->fw_status)
303 return -ENOMEM;
304
305 wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
306 if (!wl->tx_res_if) {
307 kfree(wl->fw_status);
308 return -ENOMEM;
309 }
310
311 INIT_WORK(&wl->irq_work, wl1271_irq_work);
312 INIT_WORK(&wl->tx_work, wl1271_tx_work);
313 return 0;
314}
315
316static int wl1271_chip_wakeup(struct wl1271 *wl)
317{
318 int ret = 0;
319
320 wl1271_power_on(wl);
321 msleep(WL1271_POWER_ON_SLEEP);
322 wl1271_spi_reset(wl);
323 wl1271_spi_init(wl);
324
325 /* We don't need a real memory partition here, because we only want
326 * to use the registers at this point. */
327 wl1271_set_partition(wl,
328 0x00000000,
329 0x00000000,
330 REGISTERS_BASE,
331 REGISTERS_DOWN_SIZE);
332
333 /* ELP module wake up */
334 wl1271_fw_wakeup(wl);
335
336 /* whal_FwCtrl_BootSm() */
337
338 /* 0. read chip id from CHIP_ID */
339 wl->chip.id = wl1271_reg_read32(wl, CHIP_ID_B);
340
341 /* 1. check if chip id is valid */
342
343 switch (wl->chip.id) {
344 case CHIP_ID_1271_PG10:
345 wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete",
346 wl->chip.id);
347
348 ret = wl1271_setup(wl);
349 if (ret < 0)
350 goto out;
351 break;
352 case CHIP_ID_1271_PG20:
353 wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)",
354 wl->chip.id);
355
356 ret = wl1271_setup(wl);
357 if (ret < 0)
358 goto out;
359 break;
360 default:
361 wl1271_error("unsupported chip id: 0x%x", wl->chip.id);
362 ret = -ENODEV;
363 goto out;
364 }
365
366 if (wl->fw == NULL) {
367 ret = wl1271_fetch_firmware(wl);
368 if (ret < 0)
369 goto out;
370 }
371
372 /* No NVS from netlink, try to get it from the filesystem */
373 if (wl->nvs == NULL) {
374 ret = wl1271_fetch_nvs(wl);
375 if (ret < 0)
376 goto out;
377 }
378
379out:
380 return ret;
381}
382
c87dec9f
JO		 383struct wl1271_filter_params {
384 unsigned int filters;
385 unsigned int changed;
386 int mc_list_length;
387 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
388};
389
390#define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
391 FIF_ALLMULTI | \
392 FIF_FCSFAIL | \
393 FIF_BCN_PRBRESP_PROMISC | \
394 FIF_CONTROL | \
395 FIF_OTHER_BSS)
396
f5fc0f86
LC		 397static void wl1271_filter_work(struct work_struct *work)
398{
399 struct wl1271 *wl =
400 container_of(work, struct wl1271, filter_work);
c87dec9f
JO		 401 struct wl1271_filter_params *fp;
402 unsigned long flags;
403 bool enabled = true;
f5fc0f86
LC		 404 int ret;
405
c87dec9f
JO		 406 /* first, get the filter parameters */
407 spin_lock_irqsave(&wl->wl_lock, flags);
408 fp = wl->filter_params;
409 wl->filter_params = NULL;
410 spin_unlock_irqrestore(&wl->wl_lock, flags);
411
412 if (!fp)
413 return;
414
415 /* then, lock the mutex without risk of lock-up */
f5fc0f86
LC		 416 mutex_lock(&wl->mutex);
417
418 if (wl->state == WL1271_STATE_OFF)
419 goto out;
420
421 ret = wl1271_ps_elp_wakeup(wl, false);
422 if (ret < 0)
423 goto out;
424
c87dec9f
JO		 425 /* configure the mc filter regardless of the changed flags */
426 if (fp->filters & FIF_ALLMULTI)
427 enabled = false;
428
429 ret = wl1271_acx_group_address_tbl(wl, enabled,
430 fp->mc_list, fp->mc_list_length);
431 if (ret < 0)
432 goto out_sleep;
433
434 /* determine, whether supported filter values have changed */
435 if (fp->changed == 0)
436 goto out;
437
438 /* apply configured filters */
d94cd297 439 ret = wl1271_cmd_join(wl);
f5fc0f86
LC		 440 if (ret < 0)
441 goto out_sleep;
442
443out_sleep:
444 wl1271_ps_elp_sleep(wl);
445
446out:
447 mutex_unlock(&wl->mutex);
c87dec9f 448 kfree(fp);
f5fc0f86
LC		 449}
450
451int wl1271_plt_start(struct wl1271 *wl)
452{
453 int ret;
454
455 mutex_lock(&wl->mutex);
456
457 wl1271_notice("power up");
458
459 if (wl->state != WL1271_STATE_OFF) {
460 wl1271_error("cannot go into PLT state because not "
461 "in off state: %d", wl->state);
462 ret = -EBUSY;
463 goto out;
464 }
465
466 wl->state = WL1271_STATE_PLT;
467
468 ret = wl1271_chip_wakeup(wl);
469 if (ret < 0)
470 goto out;
471
472 ret = wl1271_boot(wl);
473 if (ret < 0)
474 goto out;
475
476 wl1271_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
477
478 ret = wl1271_plt_init(wl);
479 if (ret < 0)
480 goto out;
481
482out:
483 mutex_unlock(&wl->mutex);
484
485 return ret;
486}
487
488int wl1271_plt_stop(struct wl1271 *wl)
489{
490 int ret = 0;
491
492 mutex_lock(&wl->mutex);
493
494 wl1271_notice("power down");
495
496 if (wl->state != WL1271_STATE_PLT) {
497 wl1271_error("cannot power down because not in PLT "
498 "state: %d", wl->state);
499 ret = -EBUSY;
500 goto out;
501 }
502
503 wl1271_disable_interrupts(wl);
504 wl1271_power_off(wl);
505
506 wl->state = WL1271_STATE_OFF;
507
508out:
509 mutex_unlock(&wl->mutex);
510
511 return ret;
512}
513
514
515static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
516{
517 struct wl1271 *wl = hw->priv;
518
519 skb_queue_tail(&wl->tx_queue, skb);
520
521 /*
522 * The chip specific setup must run before the first TX packet -
523 * before that, the tx_work will not be initialized!
524 */
525
a64b07e8 526 ieee80211_queue_work(wl->hw, &wl->tx_work);
f5fc0f86
LC		 527
528 /*
529 * The workqueue is slow to process the tx_queue and we need stop
530 * the queue here, otherwise the queue will get too long.
531 */
532 if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_MAX_LENGTH) {
533 ieee80211_stop_queues(wl->hw);
534
535 /*
536 * FIXME: this is racy, the variable is not properly
537 * protected. Maybe fix this by removing the stupid
538 * variable altogether and checking the real queue state?
539 */
540 wl->tx_queue_stopped = true;
541 }
542
543 return NETDEV_TX_OK;
544}
545
546static int wl1271_op_start(struct ieee80211_hw *hw)
547{
548 struct wl1271 *wl = hw->priv;
549 int ret = 0;
550
551 wl1271_debug(DEBUG_MAC80211, "mac80211 start");
552
553 mutex_lock(&wl->mutex);
554
555 if (wl->state != WL1271_STATE_OFF) {
556 wl1271_error("cannot start because not in off state: %d",
557 wl->state);
558 ret = -EBUSY;
559 goto out;
560 }
561
562 ret = wl1271_chip_wakeup(wl);
563 if (ret < 0)
564 goto out;
565
566 ret = wl1271_boot(wl);
567 if (ret < 0)
568 goto out;
569
570 ret = wl1271_hw_init(wl);
571 if (ret < 0)
572 goto out;
573
574 wl->state = WL1271_STATE_ON;
575
576 wl1271_info("firmware booted (%s)", wl->chip.fw_ver);
577
578out:
579 if (ret < 0)
580 wl1271_power_off(wl);
581
582 mutex_unlock(&wl->mutex);
583
584 return ret;
585}
586
587static void wl1271_op_stop(struct ieee80211_hw *hw)
588{
589 struct wl1271 *wl = hw->priv;
c87dec9f 590 unsigned long flags;
f5fc0f86
LC		 591 int i;
592
593 wl1271_info("down");
594
595 wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
596
c87dec9f
JO		 597 /* complete/cancel ongoing work */
598 cancel_work_sync(&wl->filter_work);
599 spin_lock_irqsave(&wl->wl_lock, flags);
600 kfree(wl->filter_params);
601 wl->filter_params = NULL;
602 spin_unlock_irqrestore(&wl->wl_lock, flags);
603
f5fc0f86
LC		 604 mutex_lock(&wl->mutex);
605
606 WARN_ON(wl->state != WL1271_STATE_ON);
607
608 if (wl->scanning) {
609 mutex_unlock(&wl->mutex);
610 ieee80211_scan_completed(wl->hw, true);
611 mutex_lock(&wl->mutex);
612 wl->scanning = false;
613 }
614
615 wl->state = WL1271_STATE_OFF;
616
617 wl1271_disable_interrupts(wl);
618
619 mutex_unlock(&wl->mutex);
620
621 cancel_work_sync(&wl->irq_work);
622 cancel_work_sync(&wl->tx_work);
623 cancel_work_sync(&wl->filter_work);
624
625 mutex_lock(&wl->mutex);
626
627 /* let's notify MAC80211 about the remaining pending TX frames */
628 wl1271_tx_flush(wl);
629 wl1271_power_off(wl);
630
631 memset(wl->bssid, 0, ETH_ALEN);
632 memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1);
633 wl->ssid_len = 0;
634 wl->listen_int = 1;
635 wl->bss_type = MAX_BSS_TYPE;
8a5a37a6 636 wl->band = IEEE80211_BAND_2GHZ;
f5fc0f86
LC		 637
638 wl->rx_counter = 0;
639 wl->elp = false;
640 wl->psm = 0;
641 wl->tx_queue_stopped = false;
642 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
643 wl->tx_blocks_available = 0;
644 wl->tx_results_count = 0;
645 wl->tx_packets_count = 0;
ac4e4ce5
JO		 646 wl->tx_security_last_seq = 0;
647 wl->tx_security_seq_16 = 0;
648 wl->tx_security_seq_32 = 0;
f5fc0f86
LC		 649 wl->time_offset = 0;
650 wl->session_counter = 0;
651 for (i = 0; i < NUM_TX_QUEUES; i++)
652 wl->tx_blocks_freed[i] = 0;
653
654 wl1271_debugfs_reset(wl);
655 mutex_unlock(&wl->mutex);
656}
657
658static int wl1271_op_add_interface(struct ieee80211_hw *hw,
659 struct ieee80211_if_init_conf *conf)
660{
661 struct wl1271 *wl = hw->priv;
f5fc0f86
LC		 662 int ret = 0;
663
e5539bcb
JL		 664 wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
665 conf->type, conf->mac_addr);
f5fc0f86
LC		 666
667 mutex_lock(&wl->mutex);
668
669 switch (conf->type) {
670 case NL80211_IFTYPE_STATION:
671 wl->bss_type = BSS_TYPE_STA_BSS;
672 break;
673 case NL80211_IFTYPE_ADHOC:
674 wl->bss_type = BSS_TYPE_IBSS;
675 break;
676 default:
677 ret = -EOPNOTSUPP;
678 goto out;
679 }
680
681 /* FIXME: what if conf->mac_addr changes? */
682
683out:
684 mutex_unlock(&wl->mutex);
685 return ret;
686}
687
688static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
689 struct ieee80211_if_init_conf *conf)
690{
691 wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
692}
693
694#if 0
695static int wl1271_op_config_interface(struct ieee80211_hw *hw,
696 struct ieee80211_vif *vif,
697 struct ieee80211_if_conf *conf)
698{
699 struct wl1271 *wl = hw->priv;
700 struct sk_buff *beacon;
f5fc0f86
LC		 701 int ret;
702
3264690b
DM		 703 wl1271_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %pM",
704 conf->bssid);
f5fc0f86
LC		 705 wl1271_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid,
706 conf->ssid_len);
707
708 mutex_lock(&wl->mutex);
709
710 ret = wl1271_ps_elp_wakeup(wl, false);
711 if (ret < 0)
712 goto out;
713
714 memcpy(wl->bssid, conf->bssid, ETH_ALEN);
715
716 ret = wl1271_cmd_build_null_data(wl);
717 if (ret < 0)
718 goto out_sleep;
719
720 wl->ssid_len = conf->ssid_len;
721 if (wl->ssid_len)
722 memcpy(wl->ssid, conf->ssid, wl->ssid_len);
723
724 if (wl->bss_type != BSS_TYPE_IBSS) {
d94cd297 725 ret = wl1271_cmd_join(wl);
f5fc0f86
LC		 726 if (ret < 0)
727 goto out_sleep;
728 }
729
730 if (conf->changed & IEEE80211_IFCC_BEACON) {
731 beacon = ieee80211_beacon_get(hw, vif);
732 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON,
733 beacon->data, beacon->len);
734
735 if (ret < 0) {
736 dev_kfree_skb(beacon);
737 goto out_sleep;
738 }
739
740 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE,
741 beacon->data, beacon->len);
742
743 dev_kfree_skb(beacon);
744
745 if (ret < 0)
746 goto out_sleep;
747
d94cd297 748 ret = wl1271_cmd_join(wl);
f5fc0f86
LC		 749
750 if (ret < 0)
751 goto out_sleep;
752 }
753
754out_sleep:
755 wl1271_ps_elp_sleep(wl);
756
757out:
758 mutex_unlock(&wl->mutex);
759
760 return ret;
761}
762#endif
763
764static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
765{
766 struct wl1271 *wl = hw->priv;
767 struct ieee80211_conf *conf = &hw->conf;
768 int channel, ret = 0;
769
770 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
771
772 wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
773 channel,
774 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
775 conf->power_level);
776
777 mutex_lock(&wl->mutex);
778
8a5a37a6
JO		 779 wl->band = conf->channel->band;
780
f5fc0f86
LC		 781 ret = wl1271_ps_elp_wakeup(wl, false);
782 if (ret < 0)
783 goto out;
784
785 if (channel != wl->channel) {
786 u8 old_channel = wl->channel;
787 wl->channel = channel;
788
d94cd297 789 ret = wl1271_cmd_join(wl);
f5fc0f86
LC		 790 if (ret < 0) {
791 wl->channel = old_channel;
792 goto out_sleep;
793 }
794 }
795
796 ret = wl1271_cmd_build_null_data(wl);
797 if (ret < 0)
798 goto out_sleep;
799
800 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
801 wl1271_info("psm enabled");
802
803 wl->psm_requested = true;
804
805 /*
806 * We enter PSM only if we're already associated.
807 * If we're not, we'll enter it when joining an SSID,
808 * through the bss_info_changed() hook.
809 */
810 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
811 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
812 wl->psm_requested) {
813 wl1271_info("psm disabled");
814
815 wl->psm_requested = false;
816
817 if (wl->psm)
818 ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
819 }
820
821 if (conf->power_level != wl->power_level) {
822 ret = wl1271_acx_tx_power(wl, conf->power_level);
823 if (ret < 0)
824 goto out;
825
826 wl->power_level = conf->power_level;
827 }
828
829out_sleep:
830 wl1271_ps_elp_sleep(wl);
831
832out:
833 mutex_unlock(&wl->mutex);
834
835 return ret;
836}
837
c87dec9f
JO		 838static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
839 struct dev_addr_list *mc_list)
840{
841 struct wl1271 *wl = hw->priv;
842 struct wl1271_filter_params *fp;
843 unsigned long flags;
844 int i;
845
846 /*
847 * FIXME: we should return a hash that will be passed to
848 * configure_filter() instead of saving everything in the context.
849 */
850
851 fp = kzalloc(sizeof(*fp), GFP_KERNEL);
852 if (!fp) {
853 wl1271_error("Out of memory setting filters.");
854 return 0;
855 }
856
857 /* update multicast filtering parameters */
858 if (mc_count > ACX_MC_ADDRESS_GROUP_MAX) {
859 mc_count = 0;
860 fp->filters |= FIF_ALLMULTI;
861 }
862
863 fp->mc_list_length = 0;
864 for (i = 0; i < mc_count; i++) {
865 if (mc_list->da_addrlen == ETH_ALEN) {
866 memcpy(fp->mc_list[fp->mc_list_length],
867 mc_list->da_addr, ETH_ALEN);
868 fp->mc_list_length++;
869 } else
870 wl1271_warning("Unknown mc address length.");
871 }
872
873 spin_lock_irqsave(&wl->wl_lock, flags);
874 kfree(wl->filter_params);
875 wl->filter_params = fp;
876 spin_unlock_irqrestore(&wl->wl_lock, flags);
877
878 return 1;
879}
f5fc0f86
LC		 880
881static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
882 unsigned int changed,
c87dec9f 883 unsigned int *total, u64 multicast)
f5fc0f86
LC		 884{
885 struct wl1271 *wl = hw->priv;
886
887 wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter");
888
889 *total &= WL1271_SUPPORTED_FILTERS;
890 changed &= WL1271_SUPPORTED_FILTERS;
891
c87dec9f 892 if (!multicast)
f5fc0f86
LC		 893 return;
894
f5fc0f86 895 /*
c87dec9f
JO		 896 * FIXME: for now we are still using a workqueue for filter
897 * configuration, but with the new mac80211, this is not needed,
898 * since configure_filter can now sleep. We now have
899 * prepare_multicast, which needs to be atomic instead.
f5fc0f86 900 */
c87dec9f
JO		 901
902 /* store current filter config */
903 wl->filter_params->filters = *total;
904 wl->filter_params->changed = changed;
905
906 ieee80211_queue_work(wl->hw, &wl->filter_work);
f5fc0f86
LC		 907}
908
909static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
910 struct ieee80211_vif *vif,
911 struct ieee80211_sta *sta,
912 struct ieee80211_key_conf *key_conf)
913{
914 struct wl1271 *wl = hw->priv;
915 const u8 *addr;
916 int ret;
ac4e4ce5
JO		 917 u32 tx_seq_32 = 0;
918 u16 tx_seq_16 = 0;
f5fc0f86
LC		 919 u8 key_type;
920
921 static const u8 bcast_addr[ETH_ALEN] =
922 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
923
924 wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
925
926 addr = sta ? sta->addr : bcast_addr;
927
928 wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
929 wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
930 wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
931 key_conf->alg, key_conf->keyidx,
932 key_conf->keylen, key_conf->flags);
933 wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
934
935 if (is_zero_ether_addr(addr)) {
936 /* We dont support TX only encryption */
937 ret = -EOPNOTSUPP;
938 goto out;
939 }
940
941 mutex_lock(&wl->mutex);
942
943 ret = wl1271_ps_elp_wakeup(wl, false);
944 if (ret < 0)
945 goto out_unlock;
946
947 switch (key_conf->alg) {
948 case ALG_WEP:
949 key_type = KEY_WEP;
950
951 key_conf->hw_key_idx = key_conf->keyidx;
952 break;
953 case ALG_TKIP:
954 key_type = KEY_TKIP;
955
956 key_conf->hw_key_idx = key_conf->keyidx;
ac4e4ce5
JO		 957 tx_seq_32 = wl->tx_security_seq_32;
958 tx_seq_16 = wl->tx_security_seq_16;
f5fc0f86
LC		 959 break;
960 case ALG_CCMP:
961 key_type = KEY_AES;
962
963 key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
ac4e4ce5
JO		 964 tx_seq_32 = wl->tx_security_seq_32;
965 tx_seq_16 = wl->tx_security_seq_16;
f5fc0f86
LC		 966 break;
967 default:
968 wl1271_error("Unknown key algo 0x%x", key_conf->alg);
969
970 ret = -EOPNOTSUPP;
971 goto out_sleep;
972 }
973
974 switch (cmd) {
975 case SET_KEY:
976 ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE,
977 key_conf->keyidx, key_type,
978 key_conf->keylen, key_conf->key,
ac4e4ce5 979 addr, tx_seq_32, tx_seq_16);
f5fc0f86
LC		 980 if (ret < 0) {
981 wl1271_error("Could not add or replace key");
982 goto out_sleep;
983 }
984 break;
985
986 case DISABLE_KEY:
987 ret = wl1271_cmd_set_key(wl, KEY_REMOVE,
988 key_conf->keyidx, key_type,
989 key_conf->keylen, key_conf->key,
ac4e4ce5 990 addr, 0, 0);
f5fc0f86
LC		 991 if (ret < 0) {
992 wl1271_error("Could not remove key");
993 goto out_sleep;
994 }
995 break;
996
997 default:
998 wl1271_error("Unsupported key cmd 0x%x", cmd);
999 ret = -EOPNOTSUPP;
1000 goto out_sleep;
1001
1002 break;
1003 }
1004
1005out_sleep:
1006 wl1271_ps_elp_sleep(wl);
1007
1008out_unlock:
1009 mutex_unlock(&wl->mutex);
1010
1011out:
1012 return ret;
1013}
1014
1015static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
1016 struct cfg80211_scan_request *req)
1017{
1018 struct wl1271 *wl = hw->priv;
1019 int ret;
1020 u8 *ssid = NULL;
1021 size_t ssid_len = 0;
1022
1023 wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
1024
1025 if (req->n_ssids) {
1026 ssid = req->ssids[0].ssid;
1027 ssid_len = req->ssids[0].ssid_len;
1028 }
1029
1030 mutex_lock(&wl->mutex);
1031
1032 ret = wl1271_ps_elp_wakeup(wl, false);
1033 if (ret < 0)
1034 goto out;
1035
1036 ret = wl1271_cmd_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1037
1038 wl1271_ps_elp_sleep(wl);
1039
1040out:
1041 mutex_unlock(&wl->mutex);
1042
1043 return ret;
1044}
1045
1046static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1047{
1048 struct wl1271 *wl = hw->priv;
1049 int ret;
1050
1051 mutex_lock(&wl->mutex);
1052
1053 ret = wl1271_ps_elp_wakeup(wl, false);
1054 if (ret < 0)
1055 goto out;
1056
1057 ret = wl1271_acx_rts_threshold(wl, (u16) value);
1058 if (ret < 0)
1059 wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret);
1060
1061 wl1271_ps_elp_sleep(wl);
1062
1063out:
1064 mutex_unlock(&wl->mutex);
1065
1066 return ret;
1067}
1068
8a5a37a6
JO		 1069static u32 wl1271_enabled_rates_get(struct wl1271 *wl, u64 basic_rate_set)
1070{
1071 struct ieee80211_supported_band *band;
1072 u32 enabled_rates = 0;
1073 int bit;
1074
1075 band = wl->hw->wiphy->bands[wl->band];
1076 for (bit = 0; bit < band->n_bitrates; bit++) {
1077 if (basic_rate_set & 0x1)
1078 enabled_rates |= band->bitrates[bit].hw_value;
1079 basic_rate_set >>= 1;
1080 }
1081
1082 return enabled_rates;
1083}
1084
f5fc0f86
LC		 1085static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
1086 struct ieee80211_vif *vif,
1087 struct ieee80211_bss_conf *bss_conf,
1088 u32 changed)
1089{
1090 enum wl1271_cmd_ps_mode mode;
1091 struct wl1271 *wl = hw->priv;
1092 int ret;
1093
1094 wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1095
1096 mutex_lock(&wl->mutex);
1097
1098 ret = wl1271_ps_elp_wakeup(wl, false);
1099 if (ret < 0)
1100 goto out;
1101
1102 if (changed & BSS_CHANGED_ASSOC) {
1103 if (bss_conf->assoc) {
d94cd297
JO		 1104 wl->beacon_int = bss_conf->beacon_int;
1105 wl->dtim_period = bss_conf->dtim_period;
f5fc0f86
LC		 1106 wl->aid = bss_conf->aid;
1107
d94cd297
JO		 1108 ret = wl1271_cmd_join(wl);
1109 if (ret < 0) {
1110 wl1271_warning("Association configuration "
1111 "failed %d", ret);
1112 goto out_sleep;
1113 }
1114
f5fc0f86
LC		 1115 ret = wl1271_cmd_build_ps_poll(wl, wl->aid);
1116 if (ret < 0)
1117 goto out_sleep;
1118
1119 ret = wl1271_acx_aid(wl, wl->aid);
1120 if (ret < 0)
1121 goto out_sleep;
1122
1123 /* If we want to go in PSM but we're not there yet */
1124 if (wl->psm_requested && !wl->psm) {
1125 mode = STATION_POWER_SAVE_MODE;
1126 ret = wl1271_ps_set_mode(wl, mode);
1127 if (ret < 0)
1128 goto out_sleep;
1129 }
d94cd297
JO		 1130 } else {
1131 /* use defaults when not associated */
1132 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
1133 wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD;
1134 wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
1135 wl->aid = 0;
f5fc0f86 1136 }
d94cd297 1137
f5fc0f86 1138 }
8a5a37a6 1139
f5fc0f86
LC		 1140 if (changed & BSS_CHANGED_ERP_SLOT) {
1141 if (bss_conf->use_short_slot)
1142 ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT);
1143 else
1144 ret = wl1271_acx_slot(wl, SLOT_TIME_LONG);
1145 if (ret < 0) {
1146 wl1271_warning("Set slot time failed %d", ret);
1147 goto out_sleep;
1148 }
1149 }
1150
1151 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1152 if (bss_conf->use_short_preamble)
1153 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1154 else
1155 wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1156 }
1157
1158 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1159 if (bss_conf->use_cts_prot)
1160 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1161 else
1162 ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1163 if (ret < 0) {
1164 wl1271_warning("Set ctsprotect failed %d", ret);
1165 goto out_sleep;
1166 }
1167 }
1168
8a5a37a6 1169 if (changed & BSS_CHANGED_BASIC_RATES) {
d94cd297 1170 wl->basic_rate_set = wl1271_enabled_rates_get(
8a5a37a6 1171 wl, bss_conf->basic_rates);
d94cd297
JO		 1172 ret = wl1271_acx_rate_policies(wl, wl->basic_rate_set);
1173
8a5a37a6
JO		 1174 if (ret < 0) {
1175 wl1271_warning("Set rate policies failed %d", ret);
1176 goto out_sleep;
1177 }
d94cd297
JO		 1178 ret = wl1271_cmd_join(wl);
1179 if (ret < 0) {
1180 wl1271_warning("Join with new basic rate "
1181 "set failed %d", ret);
1182 goto out_sleep;
1183 }
8a5a37a6
JO		 1184 }
1185
f5fc0f86
LC		 1186out_sleep:
1187 wl1271_ps_elp_sleep(wl);
1188
1189out:
1190 mutex_unlock(&wl->mutex);
1191}
1192
1193
1194/* can't be const, mac80211 writes to this */
1195static struct ieee80211_rate wl1271_rates[] = {
1196 { .bitrate = 10,
1197 .hw_value = 0x1,
1198 .hw_value_short = 0x1, },
1199 { .bitrate = 20,
1200 .hw_value = 0x2,
1201 .hw_value_short = 0x2,
1202 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1203 { .bitrate = 55,
1204 .hw_value = 0x4,
1205 .hw_value_short = 0x4,
1206 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1207 { .bitrate = 110,
1208 .hw_value = 0x20,
1209 .hw_value_short = 0x20,
1210 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1211 { .bitrate = 60,
1212 .hw_value = 0x8,
1213 .hw_value_short = 0x8, },
1214 { .bitrate = 90,
1215 .hw_value = 0x10,
1216 .hw_value_short = 0x10, },
1217 { .bitrate = 120,
1218 .hw_value = 0x40,
1219 .hw_value_short = 0x40, },
1220 { .bitrate = 180,
1221 .hw_value = 0x80,
1222 .hw_value_short = 0x80, },
1223 { .bitrate = 240,
1224 .hw_value = 0x200,
1225 .hw_value_short = 0x200, },
1226 { .bitrate = 360,
1227 .hw_value = 0x400,
1228 .hw_value_short = 0x400, },
1229 { .bitrate = 480,
1230 .hw_value = 0x800,
1231 .hw_value_short = 0x800, },
1232 { .bitrate = 540,
1233 .hw_value = 0x1000,
1234 .hw_value_short = 0x1000, },
1235};
1236
1237/* can't be const, mac80211 writes to this */
1238static struct ieee80211_channel wl1271_channels[] = {
1239 { .hw_value = 1, .center_freq = 2412},
1240 { .hw_value = 2, .center_freq = 2417},
1241 { .hw_value = 3, .center_freq = 2422},
1242 { .hw_value = 4, .center_freq = 2427},
1243 { .hw_value = 5, .center_freq = 2432},
1244 { .hw_value = 6, .center_freq = 2437},
1245 { .hw_value = 7, .center_freq = 2442},
1246 { .hw_value = 8, .center_freq = 2447},
1247 { .hw_value = 9, .center_freq = 2452},
1248 { .hw_value = 10, .center_freq = 2457},
1249 { .hw_value = 11, .center_freq = 2462},
1250 { .hw_value = 12, .center_freq = 2467},
1251 { .hw_value = 13, .center_freq = 2472},
1252};
1253
1254/* can't be const, mac80211 writes to this */
1255static struct ieee80211_supported_band wl1271_band_2ghz = {
1256 .channels = wl1271_channels,
1257 .n_channels = ARRAY_SIZE(wl1271_channels),
1258 .bitrates = wl1271_rates,
1259 .n_bitrates = ARRAY_SIZE(wl1271_rates),
1260};
1261
1262static const struct ieee80211_ops wl1271_ops = {
1263 .start = wl1271_op_start,
1264 .stop = wl1271_op_stop,
1265 .add_interface = wl1271_op_add_interface,
1266 .remove_interface = wl1271_op_remove_interface,
1267 .config = wl1271_op_config,
1268/* .config_interface = wl1271_op_config_interface, */
c87dec9f 1269 .prepare_multicast = wl1271_op_prepare_multicast,
f5fc0f86
LC		 1270 .configure_filter = wl1271_op_configure_filter,
1271 .tx = wl1271_op_tx,
1272 .set_key = wl1271_op_set_key,
1273 .hw_scan = wl1271_op_hw_scan,
1274 .bss_info_changed = wl1271_op_bss_info_changed,
1275 .set_rts_threshold = wl1271_op_set_rts_threshold,
1276};
1277
1278static int wl1271_register_hw(struct wl1271 *wl)
1279{
1280 int ret;
1281
1282 if (wl->mac80211_registered)
1283 return 0;
1284
1285 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1286
1287 ret = ieee80211_register_hw(wl->hw);
1288 if (ret < 0) {
1289 wl1271_error("unable to register mac80211 hw: %d", ret);
1290 return ret;
1291 }
1292
1293 wl->mac80211_registered = true;
1294
1295 wl1271_notice("loaded");
1296
1297 return 0;
1298}
1299
1300static int wl1271_init_ieee80211(struct wl1271 *wl)
1301{
1e2b7976
JO		 1302 /* The tx descriptor buffer and the TKIP space. */
1303 wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE +
1304 sizeof(struct wl1271_tx_hw_descr);
f5fc0f86
LC		 1305
1306 /* unit us */
1307 /* FIXME: find a proper value */
1308 wl->hw->channel_change_time = 10000;
1309
1310 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1311 IEEE80211_HW_NOISE_DBM;
1312
1313 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1314 wl->hw->wiphy->max_scan_ssids = 1;
1315 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz;
1316
1317 SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1318
1319 return 0;
1320}
1321
1322static void wl1271_device_release(struct device *dev)
1323{
1324
1325}
1326
1327static struct platform_device wl1271_device = {
1328 .name = "wl1271",
1329 .id = -1,
1330
1331 /* device model insists to have a release function */
1332 .dev = {
1333 .release = wl1271_device_release,
1334 },
1335};
1336
1337#define WL1271_DEFAULT_CHANNEL 0
1338static int __devinit wl1271_probe(struct spi_device *spi)
1339{
1340 struct wl12xx_platform_data *pdata;
1341 struct ieee80211_hw *hw;
1342 struct wl1271 *wl;
1343 int ret, i;
1344 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1345
1346 pdata = spi->dev.platform_data;
1347 if (!pdata) {
1348 wl1271_error("no platform data");
1349 return -ENODEV;
1350 }
1351
1352 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
1353 if (!hw) {
1354 wl1271_error("could not alloc ieee80211_hw");
1355 return -ENOMEM;
1356 }
1357
1358 wl = hw->priv;
1359 memset(wl, 0, sizeof(*wl));
1360
1361 wl->hw = hw;
1362 dev_set_drvdata(&spi->dev, wl);
1363 wl->spi = spi;
1364
1365 skb_queue_head_init(&wl->tx_queue);
1366
1367 INIT_WORK(&wl->filter_work, wl1271_filter_work);
37b70a81 1368 INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
f5fc0f86
LC		 1369 wl->channel = WL1271_DEFAULT_CHANNEL;
1370 wl->scanning = false;
1371 wl->default_key = 0;
1372 wl->listen_int = 1;
1373 wl->rx_counter = 0;
1374 wl->rx_config = WL1271_DEFAULT_RX_CONFIG;
1375 wl->rx_filter = WL1271_DEFAULT_RX_FILTER;
1376 wl->elp = false;
1377 wl->psm = 0;
1378 wl->psm_requested = false;
1379 wl->tx_queue_stopped = false;
1380 wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
d94cd297
JO		 1381 wl->beacon_int = WL1271_DEFAULT_BEACON_INT;
1382 wl->dtim_period = WL1271_DEFAULT_DTIM_PERIOD;
1383 wl->basic_rate_set = WL1271_DEFAULT_BASIC_RATE_SET;
8a5a37a6 1384 wl->band = IEEE80211_BAND_2GHZ;
f5fc0f86 1385
be7078c2 1386 for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
f5fc0f86
LC		 1387 wl->tx_frames[i] = NULL;
1388
1389 spin_lock_init(&wl->wl_lock);
1390
1391 /*
1392 * In case our MAC address is not correctly set,
1393 * we use a random but Nokia MAC.
1394 */
1395 memcpy(wl->mac_addr, nokia_oui, 3);
1396 get_random_bytes(wl->mac_addr + 3, 3);
1397
1398 wl->state = WL1271_STATE_OFF;
1399 mutex_init(&wl->mutex);
1400
1401 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1402 if (!wl->rx_descriptor) {
1403 wl1271_error("could not allocate memory for rx descriptor");
1404 ret = -ENOMEM;
1405 goto out_free;
1406 }
1407
1408 /* This is the only SPI value that we need to set here, the rest
1409 * comes from the board-peripherals file */
1410 spi->bits_per_word = 32;
1411
1412 ret = spi_setup(spi);
1413 if (ret < 0) {
1414 wl1271_error("spi_setup failed");
1415 goto out_free;
1416 }
1417
1418 wl->set_power = pdata->set_power;
1419 if (!wl->set_power) {
1420 wl1271_error("set power function missing in platform data");
1421 ret = -ENODEV;
1422 goto out_free;
1423 }
1424
1425 wl->irq = spi->irq;
1426 if (wl->irq < 0) {
1427 wl1271_error("irq missing in platform data");
1428 ret = -ENODEV;
1429 goto out_free;
1430 }
1431
1432 ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
1433 if (ret < 0) {
1434 wl1271_error("request_irq() failed: %d", ret);
1435 goto out_free;
1436 }
1437
1438 set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1439
1440 disable_irq(wl->irq);
1441
1442 ret = platform_device_register(&wl1271_device);
1443 if (ret) {
1444 wl1271_error("couldn't register platform device");
1445 goto out_irq;
1446 }
1447 dev_set_drvdata(&wl1271_device.dev, wl);
1448
1449 ret = wl1271_init_ieee80211(wl);
1450 if (ret)
1451 goto out_platform;
1452
1453 ret = wl1271_register_hw(wl);
1454 if (ret)
1455 goto out_platform;
1456
1457 wl1271_debugfs_init(wl);
1458
1459 wl1271_notice("initialized");
1460
1461 return 0;
1462
1463 out_platform:
1464 platform_device_unregister(&wl1271_device);
1465
1466 out_irq:
1467 free_irq(wl->irq, wl);
1468
1469 out_free:
1470 kfree(wl->rx_descriptor);
1471 wl->rx_descriptor = NULL;
1472
1473 ieee80211_free_hw(hw);
1474
1475 return ret;
1476}
1477
1478static int __devexit wl1271_remove(struct spi_device *spi)
1479{
1480 struct wl1271 *wl = dev_get_drvdata(&spi->dev);
1481
1482 ieee80211_unregister_hw(wl->hw);
1483
1484 wl1271_debugfs_exit(wl);
1485 platform_device_unregister(&wl1271_device);
1486 free_irq(wl->irq, wl);
1487 kfree(wl->target_mem_map);
1fba4974 1488 vfree(wl->fw);
f5fc0f86
LC		 1489 wl->fw = NULL;
1490 kfree(wl->nvs);
1491 wl->nvs = NULL;
1492
1493 kfree(wl->rx_descriptor);
1494 wl->rx_descriptor = NULL;
1495
1496 kfree(wl->fw_status);
1497 kfree(wl->tx_res_if);
1498
1499 ieee80211_free_hw(wl->hw);
1500
1501 return 0;
1502}
1503
1504
1505static struct spi_driver wl1271_spi_driver = {
1506 .driver = {
1507 .name = "wl1271",
1508 .bus = &spi_bus_type,
1509 .owner = THIS_MODULE,
1510 },
1511
1512 .probe = wl1271_probe,
1513 .remove = __devexit_p(wl1271_remove),
1514};
1515
1516static int __init wl1271_init(void)
1517{
1518 int ret;
1519
1520 ret = spi_register_driver(&wl1271_spi_driver);
1521 if (ret < 0) {
1522 wl1271_error("failed to register spi driver: %d", ret);
1523 goto out;
1524 }
1525
1526out:
1527 return ret;
1528}
1529
1530static void __exit wl1271_exit(void)
1531{
1532 spi_unregister_driver(&wl1271_spi_driver);
1533
1534 wl1271_notice("unloaded");
1535}
1536
1537module_init(wl1271_init);
1538module_exit(wl1271_exit);
1539
1540MODULE_LICENSE("GPL");
1541MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
2f018725 1542MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
Linux kernel - Deliverables
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