aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/wl12xx/wl1271_cmd.c
blob: d005729e0312da51130bb7d2abecd2f10279cf43 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
/*
 * This file is part of wl1271
 *
 * Copyright (C) 2009 Nokia Corporation
 *
 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/crc7.h>
#include <linux/spi/spi.h>
#include <linux/etherdevice.h>
#include <linux/ieee80211.h>

#include "wl1271.h"
#include "wl1271_reg.h"
#include "wl1271_io.h"
#include "wl1271_acx.h"
#include "wl12xx_80211.h"
#include "wl1271_cmd.h"

/*
 * send command to firmware
 *
 * @wl: wl struct
 * @id: command id
 * @buf: buffer containing the command, must work with dma
 * @len: length of the buffer
 */
int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
		    size_t res_len)
{
	struct wl1271_cmd_header *cmd;
	unsigned long timeout;
	u32 intr;
	int ret = 0;
	u16 status;

	cmd = buf;
	cmd->id = cpu_to_le16(id);
	cmd->status = 0;

	WARN_ON(len % 4 != 0);

	wl1271_write(wl, wl->cmd_box_addr, buf, len, false);

	wl1271_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);

	timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);

	intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
	while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
		if (time_after(jiffies, timeout)) {
			wl1271_error("command complete timeout");
			ret = -ETIMEDOUT;
			goto out;
		}

		msleep(1);

		intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
	}

	/* read back the status code of the command */
	if (res_len == 0)
		res_len = sizeof(struct wl1271_cmd_header);
	wl1271_read(wl, wl->cmd_box_addr, cmd, res_len, false);

	status = le16_to_cpu(cmd->status);
	if (status != CMD_STATUS_SUCCESS) {
		wl1271_error("command execute failure %d", status);
		ret = -EIO;
	}

	wl1271_write32(wl, ACX_REG_INTERRUPT_ACK,
		       WL1271_ACX_INTR_CMD_COMPLETE);

out:
	return ret;
}

static int wl1271_cmd_cal_channel_tune(struct wl1271 *wl)
{
	struct wl1271_cmd_cal_channel_tune *cmd;
	int ret = 0;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd)
		return -ENOMEM;

	cmd->test.id = TEST_CMD_CHANNEL_TUNE;

	cmd->band = WL1271_CHANNEL_TUNE_BAND_2_4;
	/* set up any channel, 7 is in the middle of the range */
	cmd->channel = 7;

	ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
	if (ret < 0)
		wl1271_warning("TEST_CMD_CHANNEL_TUNE failed");

	kfree(cmd);
	return ret;
}

static int wl1271_cmd_cal_update_ref_point(struct wl1271 *wl)
{
	struct wl1271_cmd_cal_update_ref_point *cmd;
	int ret = 0;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd)
		return -ENOMEM;

	cmd->test.id = TEST_CMD_UPDATE_PD_REFERENCE_POINT;

	/* FIXME: still waiting for the correct values */
	cmd->ref_power    = 0;
	cmd->ref_detector = 0;

	cmd->sub_band     = WL1271_PD_REFERENCE_POINT_BAND_B_G;

	ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
	if (ret < 0)
		wl1271_warning("TEST_CMD_UPDATE_PD_REFERENCE_POINT failed");

	kfree(cmd);
	return ret;
}

static int wl1271_cmd_cal_p2g(struct wl1271 *wl)
{
	struct wl1271_cmd_cal_p2g *cmd;
	int ret = 0;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd)
		return -ENOMEM;

	cmd->test.id = TEST_CMD_P2G_CAL;

	cmd->sub_band_mask = WL1271_CAL_P2G_BAND_B_G;

	ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
	if (ret < 0)
		wl1271_warning("TEST_CMD_P2G_CAL failed");

	kfree(cmd);
	return ret;
}

static int wl1271_cmd_cal(struct wl1271 *wl)
{
	/*
	 * FIXME: we must make sure that we're not sleeping when calibration
	 * is done
	 */
	int ret;

	wl1271_notice("performing tx calibration");

	ret = wl1271_cmd_cal_channel_tune(wl);
	if (ret < 0)
		return ret;

	ret = wl1271_cmd_cal_update_ref_point(wl);
	if (ret < 0)
		return ret;

	ret = wl1271_cmd_cal_p2g(wl);
	if (ret < 0)
		return ret;

	return ret;
}

int wl1271_cmd_general_parms(struct wl1271 *wl)
{
	struct wl1271_general_parms_cmd *gen_parms;
	int ret;

	if (!wl->nvs)
		return -ENODEV;

	gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
	if (!gen_parms)
		return -ENOMEM;

	gen_parms->test.id = TEST_CMD_INI_FILE_GENERAL_PARAM;

	memcpy(gen_parms->params, wl->nvs->general_params,
	       WL1271_NVS_GENERAL_PARAMS_SIZE);

	ret = wl1271_cmd_test(wl, gen_parms, sizeof(*gen_parms), 0);
	if (ret < 0)
		wl1271_warning("CMD_INI_FILE_GENERAL_PARAM failed");

	kfree(gen_parms);
	return ret;
}

int wl1271_cmd_radio_parms(struct wl1271 *wl)
{
	struct wl1271_radio_parms_cmd *radio_parms;
	struct conf_radio_parms *rparam = &wl->conf.init.radioparam;
	int ret;

	if (!wl->nvs)
		return -ENODEV;

	radio_parms = kzalloc(sizeof(*radio_parms), GFP_KERNEL);
	if (!radio_parms)
		return -ENOMEM;

	radio_parms->test.id = TEST_CMD_INI_FILE_RADIO_PARAM;

	memcpy(radio_parms->stat_radio_params, wl->nvs->stat_radio_params,
	       WL1271_NVS_STAT_RADIO_PARAMS_SIZE);
	memcpy(radio_parms->dyn_radio_params,
	       wl->nvs->dyn_radio_params[rparam->fem],
	       WL1271_NVS_DYN_RADIO_PARAMS_SIZE);

	/* FIXME: current NVS is missing 5GHz parameters */

	wl1271_dump(DEBUG_CMD, "TEST_CMD_INI_FILE_RADIO_PARAM: ",
		    radio_parms, sizeof(*radio_parms));

	ret = wl1271_cmd_test(wl, radio_parms, sizeof(*radio_parms), 0);
	if (ret < 0)
		wl1271_warning("CMD_INI_FILE_RADIO_PARAM failed");

	kfree(radio_parms);
	return ret;
}

int wl1271_cmd_join(struct wl1271 *wl, u8 bss_type)
{
	static bool do_cal = true;
	struct wl1271_cmd_join *join;
	int ret, i;
	u8 *bssid;

	/* FIXME: remove when we get calibration from the factory */
	if (do_cal) {
		ret = wl1271_cmd_cal(wl);
		if (ret < 0)
			wl1271_warning("couldn't calibrate");
		else
			do_cal = false;
	}

	join = kzalloc(sizeof(*join), GFP_KERNEL);
	if (!join) {
		ret = -ENOMEM;
		goto out;
	}

	wl1271_debug(DEBUG_CMD, "cmd join");

	/* Reverse order BSSID */
	bssid = (u8 *) &join->bssid_lsb;
	for (i = 0; i < ETH_ALEN; i++)
		bssid[i] = wl->bssid[ETH_ALEN - i - 1];

	join->rx_config_options = cpu_to_le32(wl->rx_config);
	join->rx_filter_options = cpu_to_le32(wl->rx_filter);
	join->bss_type = bss_type;

	if (wl->band == IEEE80211_BAND_2GHZ)
		join->basic_rate_set = cpu_to_le32(CONF_HW_BIT_RATE_1MBPS   |
						   CONF_HW_BIT_RATE_2MBPS   |
						   CONF_HW_BIT_RATE_5_5MBPS |
						   CONF_HW_BIT_RATE_11MBPS);
	else {
		join->bss_type |= WL1271_JOIN_CMD_BSS_TYPE_5GHZ;
		join->basic_rate_set = cpu_to_le32(CONF_HW_BIT_RATE_6MBPS  |
						   CONF_HW_BIT_RATE_12MBPS |
						   CONF_HW_BIT_RATE_24MBPS);
	}

	join->beacon_interval = cpu_to_le16(WL1271_DEFAULT_BEACON_INT);
	join->dtim_interval = WL1271_DEFAULT_DTIM_PERIOD;

	join->channel = wl->channel;
	join->ssid_len = wl->ssid_len;
	memcpy(join->ssid, wl->ssid, wl->ssid_len);
	join->ctrl = WL1271_JOIN_CMD_CTRL_TX_FLUSH;

	/* increment the session counter */
	wl->session_counter++;
	if (wl->session_counter >= SESSION_COUNTER_MAX)
		wl->session_counter = 0;

	join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;

	/* reset TX security counters */
	wl->tx_security_last_seq = 0;
	wl->tx_security_seq = 0;

	ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join), 0);
	if (ret < 0) {
		wl1271_error("failed to initiate cmd join");
		goto out_free;
	}

	/*
	 * ugly hack: we should wait for JOIN_EVENT_COMPLETE_ID but to
	 * simplify locking we just sleep instead, for now
	 */
	msleep(10);

out_free:
	kfree(join);

out:
	return ret;
}

/**
 * send test command to firmware
 *
 * @wl: wl struct
 * @buf: buffer containing the command, with all headers, must work with dma
 * @len: length of the buffer
 * @answer: is answer needed
 */
int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
{
	int ret;
	size_t res_len = 0;

	wl1271_debug(DEBUG_CMD, "cmd test");

	if (answer)
		res_len = buf_len;

	ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);

	if (ret < 0) {
		wl1271_warning("TEST command failed");
		return ret;
	}

	return ret;
}

/**
 * read acx from firmware
 *
 * @wl: wl struct
 * @id: acx id
 * @buf: buffer for the response, including all headers, must work with dma
 * @len: lenght of buf
 */
int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
{
	struct acx_header *acx = buf;
	int ret;

	wl1271_debug(DEBUG_CMD, "cmd interrogate");

	acx->id = cpu_to_le16(id);

	/* payload length, does not include any headers */
	acx->len = cpu_to_le16(len - sizeof(*acx));

	ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
	if (ret < 0)
		wl1271_error("INTERROGATE command failed");

	return ret;
}

/**
 * write acx value to firmware
 *
 * @wl: wl struct
 * @id: acx id
 * @buf: buffer containing acx, including all headers, must work with dma
 * @len: length of buf
 */
int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
{
	struct acx_header *acx = buf;
	int ret;

	wl1271_debug(DEBUG_CMD, "cmd configure");

	acx->id = cpu_to_le16(id);

	/* payload length, does not include any headers */
	acx->len = cpu_to_le16(len - sizeof(*acx));

	ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
	if (ret < 0) {
		wl1271_warning("CONFIGURE command NOK");
		return ret;
	}

	return 0;
}

int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
{
	struct cmd_enabledisable_path *cmd;
	int ret;
	u16 cmd_rx, cmd_tx;

	wl1271_debug(DEBUG_CMD, "cmd data path");

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd) {
		ret = -ENOMEM;
		goto out;
	}

	/* the channel here is only used for calibration, so hardcoded to 1 */
	cmd->channel = 1;

	if (enable) {
		cmd_rx = CMD_ENABLE_RX;
		cmd_tx = CMD_ENABLE_TX;
	} else {
		cmd_rx = CMD_DISABLE_RX;
		cmd_tx = CMD_DISABLE_TX;
	}

	ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
	if (ret < 0) {
		wl1271_error("rx %s cmd for channel %d failed",
			     enable ? "start" : "stop", cmd->channel);
		goto out;
	}

	wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
		     enable ? "start" : "stop", cmd->channel);

	ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
	if (ret < 0) {
		wl1271_error("tx %s cmd for channel %d failed",
			     enable ? "start" : "stop", cmd->channel);
		return ret;
	}

	wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
		     enable ? "start" : "stop", cmd->channel);

out:
	kfree(cmd);
	return ret;
}

int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode, bool send)
{
	struct wl1271_cmd_ps_params *ps_params = NULL;
	int ret = 0;

	/* FIXME: this should be in ps.c */
	ret = wl1271_acx_wake_up_conditions(wl);
	if (ret < 0) {
		wl1271_error("couldn't set wake up conditions");
		goto out;
	}

	wl1271_debug(DEBUG_CMD, "cmd set ps mode");

	ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
	if (!ps_params) {
		ret = -ENOMEM;
		goto out;
	}

	ps_params->ps_mode = ps_mode;
	ps_params->send_null_data = send;
	ps_params->retries = 5;
	ps_params->hang_over_period = 128;
	ps_params->null_data_rate = cpu_to_le32(1); /* 1 Mbps */

	ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
			      sizeof(*ps_params), 0);
	if (ret < 0) {
		wl1271_error("cmd set_ps_mode failed");
		goto out;
	}

out:
	kfree(ps_params);
	return ret;
}

int wl1271_cmd_read_memory(struct wl1271 *wl, u32 addr, void *answer,
			   size_t len)
{
	struct cmd_read_write_memory *cmd;
	int ret = 0;

	wl1271_debug(DEBUG_CMD, "cmd read memory");

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd) {
		ret = -ENOMEM;
		goto out;
	}

	WARN_ON(len > MAX_READ_SIZE);
	len = min_t(size_t, len, MAX_READ_SIZE);

	cmd->addr = cpu_to_le32(addr);
	cmd->size = cpu_to_le32(len);

	ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd),
			      sizeof(*cmd));
	if (ret < 0) {
		wl1271_error("read memory command failed: %d", ret);
		goto out;
	}

	/* the read command got in */
	memcpy(answer, cmd->value, len);

out:
	kfree(cmd);
	return ret;
}

int wl1271_cmd_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
		    const u8 *ie, size_t ie_len, u8 active_scan,
		    u8 high_prio, u8 band, u8 probe_requests)
{

	struct wl1271_cmd_trigger_scan_to *trigger = NULL;
	struct wl1271_cmd_scan *params = NULL;
	struct ieee80211_channel *channels;
	int i, j, n_ch, ret;
	u16 scan_options = 0;
	u8 ieee_band;

	if (band == WL1271_SCAN_BAND_2_4_GHZ)
		ieee_band = IEEE80211_BAND_2GHZ;
	else if (band == WL1271_SCAN_BAND_DUAL && wl1271_11a_enabled())
		ieee_band = IEEE80211_BAND_2GHZ;
	else if (band == WL1271_SCAN_BAND_5_GHZ && wl1271_11a_enabled())
		ieee_band = IEEE80211_BAND_5GHZ;
	else
		return -EINVAL;

	if (wl->hw->wiphy->bands[ieee_band]->channels == NULL)
		return -EINVAL;

	channels = wl->hw->wiphy->bands[ieee_band]->channels;
	n_ch = wl->hw->wiphy->bands[ieee_band]->n_channels;

	if (test_bit(WL1271_FLAG_SCANNING, &wl->flags))
		return -EINVAL;

	params = kzalloc(sizeof(*params), GFP_KERNEL);
	if (!params)
		return -ENOMEM;

	params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
	params->params.rx_filter_options =
		cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);

	if (!active_scan)
		scan_options |= WL1271_SCAN_OPT_PASSIVE;
	if (high_prio)
		scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
	params->params.scan_options = cpu_to_le16(scan_options);

	params->params.num_probe_requests = probe_requests;
	/* Let the fw autodetect suitable tx_rate for probes */
	params->params.tx_rate = 0;
	params->params.tid_trigger = 0;
	params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;

	if (band == WL1271_SCAN_BAND_DUAL)
		params->params.band = WL1271_SCAN_BAND_2_4_GHZ;
	else
		params->params.band = band;

	for (i = 0, j = 0; i < n_ch && i < WL1271_SCAN_MAX_CHANNELS; i++) {
		if (!(channels[i].flags & IEEE80211_CHAN_DISABLED)) {
			params->channels[j].min_duration =
				cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
			params->channels[j].max_duration =
				cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
			memset(&params->channels[j].bssid_lsb, 0xff, 4);
			memset(&params->channels[j].bssid_msb, 0xff, 2);
			params->channels[j].early_termination = 0;
			params->channels[j].tx_power_att =
				WL1271_SCAN_CURRENT_TX_PWR;
			params->channels[j].channel = channels[i].hw_value;
			j++;
		}
	}

	params->params.num_channels = j;

	if (ssid_len && ssid) {
		params->params.ssid_len = ssid_len;
		memcpy(params->params.ssid, ssid, ssid_len);
	}

	ret = wl1271_cmd_build_probe_req(wl, ssid, ssid_len,
					 ie, ie_len, ieee_band);
	if (ret < 0) {
		wl1271_error("PROBE request template failed");
		goto out;
	}

	trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
	if (!trigger) {
		ret = -ENOMEM;
		goto out;
	}

	/* disable the timeout */
	trigger->timeout = 0;

	ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
			      sizeof(*trigger), 0);
	if (ret < 0) {
		wl1271_error("trigger scan to failed for hw scan");
		goto out;
	}

	wl1271_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));

	set_bit(WL1271_FLAG_SCANNING, &wl->flags);
	if (wl1271_11a_enabled()) {
		wl->scan.state = band;
		if (band == WL1271_SCAN_BAND_DUAL) {
			wl->scan.active = active_scan;
			wl->scan.high_prio = high_prio;
			wl->scan.probe_requests = probe_requests;
			if (ssid_len && ssid) {
				wl->scan.ssid_len = ssid_len;
				memcpy(wl->scan.ssid, ssid, ssid_len);
			} else
				wl->scan.ssid_len = 0;
		}
	}

	ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params), 0);
	if (ret < 0) {
		wl1271_error("SCAN failed");
		clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
		goto out;
	}

out:
	kfree(params);
	return ret;
}

int wl1271_cmd_template_set(struct wl1271 *wl, u16 template_id,
			    void *buf, size_t buf_len)
{
	struct wl1271_cmd_template_set *cmd;
	int ret = 0;

	wl1271_debug(DEBUG_CMD, "cmd template_set %d", template_id);

	WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
	buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd) {
		ret = -ENOMEM;
		goto out;
	}

	cmd->len = cpu_to_le16(buf_len);
	cmd->template_type = template_id;
	cmd->enabled_rates = cpu_to_le32(wl->conf.tx.rc_conf.enabled_rates);
	cmd->short_retry_limit = wl->conf.tx.rc_conf.short_retry_limit;
	cmd->long_retry_limit = wl->conf.tx.rc_conf.long_retry_limit;

	if (buf)
		memcpy(cmd->template_data, buf, buf_len);

	ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
	if (ret < 0) {
		wl1271_warning("cmd set_template failed: %d", ret);
		goto out_free;
	}

out_free:
	kfree(cmd);

out:
	return ret;
}

int wl1271_cmd_build_null_data(struct wl1271 *wl)
{
	struct sk_buff *skb = NULL;
	int size;
	void *ptr;
	int ret = -ENOMEM;


	if (wl->bss_type == BSS_TYPE_IBSS) {
		size = sizeof(struct wl12xx_null_data_template);
		ptr = NULL;
	} else {
		skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
		if (!skb)
			goto out;
		size = skb->len;
		ptr = skb->data;
	}

	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, ptr, size);

out:
	dev_kfree_skb(skb);
	if (ret)
		wl1271_warning("cmd buld null data failed %d", ret);

	return ret;

}

int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid)
{
	struct sk_buff *skb;
	int ret = 0;

	skb = ieee80211_pspoll_get(wl->hw, wl->vif);
	if (!skb)
		goto out;

	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, skb->data,
				      skb->len);

out:
	dev_kfree_skb(skb);
	return ret;
}

int wl1271_cmd_build_probe_req(struct wl1271 *wl,
			       const u8 *ssid, size_t ssid_len,
			       const u8 *ie, size_t ie_len, u8 band)
{
	struct sk_buff *skb;
	int ret;

	skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
				     ie, ie_len);
	if (!skb) {
		ret = -ENOMEM;
		goto out;
	}

	wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", skb->data, skb->len);

	if (band == IEEE80211_BAND_2GHZ)
		ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
					      skb->data, skb->len);
	else
		ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
					      skb->data, skb->len);

out:
	dev_kfree_skb(skb);
	return ret;
}

int wl1271_build_qos_null_data(struct wl1271 *wl)
{
	struct ieee80211_qos_hdr template;

	memset(&template, 0, sizeof(template));

	memcpy(template.addr1, wl->bssid, ETH_ALEN);
	memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
	memcpy(template.addr3, wl->bssid, ETH_ALEN);

	template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
					     IEEE80211_STYPE_QOS_NULLFUNC |
					     IEEE80211_FCTL_TODS);

	/* FIXME: not sure what priority to use here */
	template.qos_ctrl = cpu_to_le16(0);

	return wl1271_cmd_template_set(wl, CMD_TEMPL_QOS_NULL_DATA, &template,
				       sizeof(template));
}

int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)
{
	struct wl1271_cmd_set_keys *cmd;
	int ret = 0;

	wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd) {
		ret = -ENOMEM;
		goto out;
	}

	cmd->id = id;
	cmd->key_action = cpu_to_le16(KEY_SET_ID);
	cmd->key_type = KEY_WEP;

	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
	if (ret < 0) {
		wl1271_warning("cmd set_default_wep_key failed: %d", ret);
		goto out;
	}

out:
	kfree(cmd);

	return ret;
}

int wl1271_cmd_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
		       u8 key_size, const u8 *key, const u8 *addr,
		       u32 tx_seq_32, u16 tx_seq_16)
{
	struct wl1271_cmd_set_keys *cmd;
	int ret = 0;

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd) {
		ret = -ENOMEM;
		goto out;
	}

	if (key_type != KEY_WEP)
		memcpy(cmd->addr, addr, ETH_ALEN);

	cmd->key_action = cpu_to_le16(action);
	cmd->key_size = key_size;
	cmd->key_type = key_type;

	cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
	cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);

	/* we have only one SSID profile */
	cmd->ssid_profile = 0;

	cmd->id = id;

	if (key_type == KEY_TKIP) {
		/*
		 * We get the key in the following form:
		 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
		 * but the target is expecting:
		 * TKIP - RX MIC - TX MIC
		 */
		memcpy(cmd->key, key, 16);
		memcpy(cmd->key + 16, key + 24, 8);
		memcpy(cmd->key + 24, key + 16, 8);

	} else {
		memcpy(cmd->key, key, key_size);
	}

	wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));

	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
	if (ret < 0) {
		wl1271_warning("could not set keys");
	goto out;
	}

out:
	kfree(cmd);

	return ret;
}

int wl1271_cmd_disconnect(struct wl1271 *wl)
{
	struct wl1271_cmd_disconnect *cmd;
	int ret = 0;

	wl1271_debug(DEBUG_CMD, "cmd disconnect");

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd) {
		ret = -ENOMEM;
		goto out;
	}

	cmd->rx_config_options = cpu_to_le32(wl->rx_config);
	cmd->rx_filter_options = cpu_to_le32(wl->rx_filter);
	/* disconnect reason is not used in immediate disconnections */
	cmd->type = DISCONNECT_IMMEDIATE;

	ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd), 0);
	if (ret < 0) {
		wl1271_error("failed to send disconnect command");
		goto out_free;
	}

out_free:
	kfree(cmd);

out:
	return ret;
}