cmdevt.c 43.5 KB
Newer Older
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
/*
 * Marvell Wireless LAN device driver: commands and events
 *
 * Copyright (C) 2011, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 */

#include "decl.h"
#include "ioctl.h"
#include "util.h"
#include "fw.h"
#include "main.h"
#include "wmm.h"
#include "11n.h"

/*
 * This function initializes a command node.
 *
 * The actual allocation of the node is not done by this function. It only
 * initiates a node by filling it with default parameters. Similarly,
 * allocation of the different buffers used (IOCTL buffer, data buffer) are
 * not done by this function either.
 */
static void
mwifiex_init_cmd_node(struct mwifiex_private *priv,
		      struct cmd_ctrl_node *cmd_node,
39
		      u32 cmd_oid, void *data_buf)
40
41
42
{
	cmd_node->priv = priv;
	cmd_node->cmd_oid = cmd_oid;
43
44
45
46
47
48
	if (priv->adapter->cmd_wait_q_required) {
		cmd_node->wait_q_enabled = priv->adapter->cmd_wait_q_required;
		priv->adapter->cmd_wait_q_required = false;
		cmd_node->cmd_wait_q_woken = false;
		cmd_node->condition = &cmd_node->cmd_wait_q_woken;
	}
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
	cmd_node->data_buf = data_buf;
	cmd_node->cmd_skb = cmd_node->skb;
}

/*
 * This function returns a command node from the free queue depending upon
 * availability.
 */
static struct cmd_ctrl_node *
mwifiex_get_cmd_node(struct mwifiex_adapter *adapter)
{
	struct cmd_ctrl_node *cmd_node;
	unsigned long flags;

	spin_lock_irqsave(&adapter->cmd_free_q_lock, flags);
	if (list_empty(&adapter->cmd_free_q)) {
		dev_err(adapter->dev, "GET_CMD_NODE: cmd node not available\n");
		spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
		return NULL;
	}
	cmd_node = list_first_entry(&adapter->cmd_free_q,
			struct cmd_ctrl_node, list);
	list_del(&cmd_node->list);
	spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);

	return cmd_node;
}

/*
 * This function cleans up a command node.
 *
 * The function resets the fields including the buffer pointers.
 * This function does not try to free the buffers. They must be
 * freed before calling this function.
 *
 * This function will however call the receive completion callback
 * in case a response buffer is still available before resetting
 * the pointer.
 */
static void
mwifiex_clean_cmd_node(struct mwifiex_adapter *adapter,
		       struct cmd_ctrl_node *cmd_node)
{
	cmd_node->cmd_oid = 0;
	cmd_node->cmd_flag = 0;
	cmd_node->data_buf = NULL;
95
	cmd_node->wait_q_enabled = false;
96

97
98
99
	if (cmd_node->cmd_skb)
		skb_trim(cmd_node->cmd_skb, 0);

100
	if (cmd_node->resp_skb) {
101
		adapter->if_ops.cmdrsp_complete(adapter, cmd_node->resp_skb);
102
103
104
105
106
107
108
109
110
111
112
113
		cmd_node->resp_skb = NULL;
	}
}

/*
 * This function sends a host command to the firmware.
 *
 * The function copies the host command into the driver command
 * buffer, which will be transferred to the firmware later by the
 * main thread.
 */
static int mwifiex_cmd_host_cmd(struct mwifiex_private *priv,
114
115
				struct host_cmd_ds_command *cmd,
				struct mwifiex_ds_misc_cmd *pcmd_ptr)
116
117
{
	/* Copy the HOST command to command buffer */
118
	memcpy(cmd, pcmd_ptr->cmd, pcmd_ptr->len);
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
	dev_dbg(priv->adapter->dev, "cmd: host cmd size = %d\n", pcmd_ptr->len);
	return 0;
}

/*
 * This function downloads a command to the firmware.
 *
 * The function performs sanity tests, sets the command sequence
 * number and size, converts the header fields to CPU format before
 * sending. Afterwards, it logs the command ID and action for debugging
 * and sets up the command timeout timer.
 */
static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
				  struct cmd_ctrl_node *cmd_node)
{

	struct mwifiex_adapter *adapter = priv->adapter;
136
	int ret;
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
	struct host_cmd_ds_command *host_cmd;
	uint16_t cmd_code;
	uint16_t cmd_size;
	struct timeval tstamp;
	unsigned long flags;

	if (!adapter || !cmd_node)
		return -1;

	host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);

	/* Sanity test */
	if (host_cmd == NULL || host_cmd->size == 0) {
		dev_err(adapter->dev, "DNLD_CMD: host_cmd is null"
			" or cmd size is 0, not sending\n");
152
153
		if (cmd_node->wait_q_enabled)
			adapter->cmd_wait_q.status = -1;
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
		mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
		return -1;
	}

	/* Set command sequence number */
	adapter->seq_num++;
	host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
			    (adapter->seq_num, cmd_node->priv->bss_num,
			     cmd_node->priv->bss_type));

	spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
	adapter->curr_cmd = cmd_node;
	spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);

	cmd_code = le16_to_cpu(host_cmd->command);
	cmd_size = le16_to_cpu(host_cmd->size);

	skb_trim(cmd_node->cmd_skb, cmd_size);

	do_gettimeofday(&tstamp);
	dev_dbg(adapter->dev, "cmd: DNLD_CMD: (%lu.%lu): %#x, act %#x, len %d,"
		" seqno %#x\n",
		tstamp.tv_sec, tstamp.tv_usec, cmd_code,
	       le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN)), cmd_size,
	       le16_to_cpu(host_cmd->seq_num));

	skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);

	ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
183
					   cmd_node->cmd_skb, NULL);
184

185
186
	skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);

187
188
	if (ret == -1) {
		dev_err(adapter->dev, "DNLD_CMD: host to card failed\n");
189
190
		if (cmd_node->wait_q_enabled)
			adapter->cmd_wait_q.status = -1;
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
		mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);

		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
		adapter->curr_cmd = NULL;
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);

		adapter->dbg.num_cmd_host_to_card_failure++;
		return -1;
	}

	/* Save the last command id and action to debug log */
	adapter->dbg.last_cmd_index =
		(adapter->dbg.last_cmd_index + 1) % DBG_CMD_NUM;
	adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index] = cmd_code;
	adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index] =
		le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN));

	/* Clear BSS_NO_BITS from HostCmd */
	cmd_code &= HostCmd_CMD_ID_MASK;

	/* Setup the timer after transmit command */
	mod_timer(&adapter->cmd_timer,
		jiffies + (MWIFIEX_TIMER_10S * HZ) / 1000);

	return 0;
}

/*
 * This function downloads a sleep confirm command to the firmware.
 *
 * The function performs sanity tests, sets the command sequence
 * number and size, converts the header fields to CPU format before
 * sending.
 *
 * No responses are needed for sleep confirm command.
 */
static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
{
229
	int ret;
230
	struct mwifiex_private *priv;
231
232
	struct mwifiex_opt_sleep_confirm *sleep_cfm_buf =
				(struct mwifiex_opt_sleep_confirm *)
233
234
235
				adapter->sleep_cfm->data;
	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);

236
	sleep_cfm_buf->seq_num =
237
238
239
240
241
		cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO
					(adapter->seq_num, priv->bss_num,
					 priv->bss_type)));
	adapter->seq_num++;

242
	skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
243
	ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
244
					   adapter->sleep_cfm, NULL);
245
	skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
246
247
248
249
250
251
252
253

	if (ret == -1) {
		dev_err(adapter->dev, "SLEEP_CFM: failed\n");
		adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure++;
		return -1;
	}
	if (GET_BSS_ROLE(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY))
			== MWIFIEX_BSS_ROLE_STA) {
254
		if (!sleep_cfm_buf->resp_ctrl)
255
256
257
258
259
260
			/* Response is not needed for sleep
			   confirm command */
			adapter->ps_state = PS_STATE_SLEEP;
		else
			adapter->ps_state = PS_STATE_SLEEP_CFM;

261
		if (!sleep_cfm_buf->resp_ctrl
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
				&& (adapter->is_hs_configured
					&& !adapter->sleep_period.period)) {
			adapter->pm_wakeup_card_req = true;
			mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
						MWIFIEX_BSS_ROLE_STA), true);
		}
	}

	return ret;
}

/*
 * This function allocates the command buffers and links them to
 * the command free queue.
 *
 * The driver uses a pre allocated number of command buffers, which
 * are created at driver initializations and freed at driver cleanup.
 * Every command needs to obtain a command buffer from this pool before
 * it can be issued. The command free queue lists the command buffers
 * currently free to use, while the command pending queue lists the
 * command buffers already in use and awaiting handling. Command buffers
 * are returned to the free queue after use.
 */
int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter)
{
	struct cmd_ctrl_node *cmd_array;
	u32 buf_size;
	u32 i;

	/* Allocate and initialize struct cmd_ctrl_node */
	buf_size = sizeof(struct cmd_ctrl_node) * MWIFIEX_NUM_OF_CMD_BUFFER;
	cmd_array = kzalloc(buf_size, GFP_KERNEL);
	if (!cmd_array) {
		dev_err(adapter->dev, "%s: failed to alloc cmd_array\n",
				__func__);
297
		return -ENOMEM;
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
	}

	adapter->cmd_pool = cmd_array;
	memset(adapter->cmd_pool, 0, buf_size);

	/* Allocate and initialize command buffers */
	for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
		cmd_array[i].skb = dev_alloc_skb(MWIFIEX_SIZE_OF_CMD_BUFFER);
		if (!cmd_array[i].skb) {
			dev_err(adapter->dev, "ALLOC_CMD_BUF: out of memory\n");
			return -1;
		}
	}

	for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++)
		mwifiex_insert_cmd_to_free_q(adapter, &cmd_array[i]);

	return 0;
}

/*
 * This function frees the command buffers.
 *
 * The function calls the completion callback for all the command
 * buffers that still have response buffers associated with them.
 */
int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
{
	struct cmd_ctrl_node *cmd_array;
	u32 i;

	/* Need to check if cmd pool is allocated or not */
	if (!adapter->cmd_pool) {
		dev_dbg(adapter->dev, "info: FREE_CMD_BUF: cmd_pool is null\n");
		return 0;
	}

	cmd_array = adapter->cmd_pool;

	/* Release shared memory buffers */
	for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
		if (cmd_array[i].skb) {
			dev_dbg(adapter->dev, "cmd: free cmd buffer %d\n", i);
			dev_kfree_skb_any(cmd_array[i].skb);
		}
		if (!cmd_array[i].resp_skb)
			continue;
345
		dev_kfree_skb_any(cmd_array[i].resp_skb);
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
	}
	/* Release struct cmd_ctrl_node */
	if (adapter->cmd_pool) {
		dev_dbg(adapter->dev, "cmd: free cmd pool\n");
		kfree(adapter->cmd_pool);
		adapter->cmd_pool = NULL;
	}

	return 0;
}

/*
 * This function handles events generated by firmware.
 *
 * Event body of events received from firmware are not used (though they are
 * saved), only the event ID is used. Some events are re-invoked by
 * the driver, with a new event body.
 *
 * After processing, the function calls the completion callback
 * for cleanup.
 */
int mwifiex_process_event(struct mwifiex_adapter *adapter)
{
369
	int ret;
370
371
372
373
374
	struct mwifiex_private *priv =
		mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
	struct sk_buff *skb = adapter->event_skb;
	u32 eventcause = adapter->event_cause;
	struct timeval tstamp;
375
	struct mwifiex_rxinfo *rx_info;
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393

	/* Save the last event to debug log */
	adapter->dbg.last_event_index =
		(adapter->dbg.last_event_index + 1) % DBG_CMD_NUM;
	adapter->dbg.last_event[adapter->dbg.last_event_index] =
		(u16) eventcause;

	/* Get BSS number and corresponding priv */
	priv = mwifiex_get_priv_by_id(adapter, EVENT_GET_BSS_NUM(eventcause),
				      EVENT_GET_BSS_TYPE(eventcause));
	if (!priv)
		priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
	/* Clear BSS_NO_BITS from event */
	eventcause &= EVENT_ID_MASK;
	adapter->event_cause = eventcause;

	if (skb) {
		rx_info = MWIFIEX_SKB_RXCB(skb);
394
395
		rx_info->bss_num = priv->bss_num;
		rx_info->bss_type = priv->bss_type;
396
397
398
399
400
401
402
403
404
405
406
407
	}

	if (eventcause != EVENT_PS_SLEEP && eventcause != EVENT_PS_AWAKE) {
		do_gettimeofday(&tstamp);
		dev_dbg(adapter->dev, "event: %lu.%lu: cause: %#x\n",
		       tstamp.tv_sec, tstamp.tv_usec, eventcause);
	}

	ret = mwifiex_process_sta_event(priv);

	adapter->event_cause = 0;
	adapter->event_skb = NULL;
408
	adapter->if_ops.event_complete(adapter, skb);
409
410
411
412
413

	return ret;
}

/*
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
 * This function is used to send synchronous command to the firmware.
 *
 * it allocates a wait queue for the command and wait for the command
 * response.
 */
int mwifiex_send_cmd_sync(struct mwifiex_private *priv, uint16_t cmd_no,
			  u16 cmd_action, u32 cmd_oid, void *data_buf)
{
	int ret = 0;
	struct mwifiex_adapter *adapter = priv->adapter;

	adapter->cmd_wait_q_required = true;

	ret = mwifiex_send_cmd_async(priv, cmd_no, cmd_action, cmd_oid,
				     data_buf);
	if (!ret)
		ret = mwifiex_wait_queue_complete(adapter);

	return ret;
}


/*
 * This function prepares a command and asynchronously send it to the firmware.
438
439
440
441
442
443
444
445
446
 *
 * Preparation includes -
 *      - Sanity tests to make sure the card is still present or the FW
 *        is not reset
 *      - Getting a new command node from the command free queue
 *      - Initializing the command node for default parameters
 *      - Fill up the non-default parameters and buffer pointers
 *      - Add the command to pending queue
 */
447
448
int mwifiex_send_cmd_async(struct mwifiex_private *priv, uint16_t cmd_no,
			   u16 cmd_action, u32 cmd_oid, void *data_buf)
449
{
450
	int ret;
451
	struct mwifiex_adapter *adapter = priv->adapter;
452
453
	struct cmd_ctrl_node *cmd_node;
	struct host_cmd_ds_command *cmd_ptr;
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

	if (!adapter) {
		pr_err("PREP_CMD: adapter is NULL\n");
		return -1;
	}

	if (adapter->is_suspended) {
		dev_err(adapter->dev, "PREP_CMD: device in suspended state\n");
		return -1;
	}

	if (adapter->surprise_removed) {
		dev_err(adapter->dev, "PREP_CMD: card is removed\n");
		return -1;
	}

	if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET) {
		if (cmd_no != HostCmd_CMD_FUNC_INIT) {
			dev_err(adapter->dev, "PREP_CMD: FW in reset state\n");
			return -1;
		}
	}

	/* Get a new command node */
	cmd_node = mwifiex_get_cmd_node(adapter);

	if (!cmd_node) {
		dev_err(adapter->dev, "PREP_CMD: no free cmd node\n");
		return -1;
	}

	/* Initialize the command node */
486
	mwifiex_init_cmd_node(priv, cmd_node, cmd_oid, data_buf);
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

	if (!cmd_node->cmd_skb) {
		dev_err(adapter->dev, "PREP_CMD: no free cmd buf\n");
		return -1;
	}

	memset(skb_put(cmd_node->cmd_skb, sizeof(struct host_cmd_ds_command)),
	       0, sizeof(struct host_cmd_ds_command));

	cmd_ptr = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
	cmd_ptr->command = cpu_to_le16(cmd_no);
	cmd_ptr->result = 0;

	/* Prepare command */
	if (cmd_no) {
		ret = mwifiex_sta_prepare_cmd(priv, cmd_no, cmd_action,
					      cmd_oid, data_buf, cmd_ptr);
	} else {
		ret = mwifiex_cmd_host_cmd(priv, cmd_ptr, data_buf);
		cmd_node->cmd_flag |= CMD_F_HOSTCMD;
	}

	/* Return error, since the command preparation failed */
	if (ret) {
		dev_err(adapter->dev, "PREP_CMD: cmd %#x preparation failed\n",
							cmd_no);
		mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
		return -1;
	}

	/* Send command */
518
	if (cmd_no == HostCmd_CMD_802_11_SCAN) {
519
		mwifiex_queue_scan_cmd(priv, cmd_node);
520
521
	} else {
		adapter->cmd_queued = cmd_node;
522
		mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
523
	}
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539

	return ret;
}

/*
 * This function returns a command to the command free queue.
 *
 * The function also calls the completion callback if required, before
 * cleaning the command node and re-inserting it into the free queue.
 */
void
mwifiex_insert_cmd_to_free_q(struct mwifiex_adapter *adapter,
			     struct cmd_ctrl_node *cmd_node)
{
	unsigned long flags;

540
	if (!cmd_node)
541
		return;
542
543

	if (cmd_node->wait_q_enabled)
544
		mwifiex_complete_cmd(adapter, cmd_node);
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
	/* Clean the node */
	mwifiex_clean_cmd_node(adapter, cmd_node);

	/* Insert node into cmd_free_q */
	spin_lock_irqsave(&adapter->cmd_free_q_lock, flags);
	list_add_tail(&cmd_node->list, &adapter->cmd_free_q);
	spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
}

/*
 * This function queues a command to the command pending queue.
 *
 * This in effect adds the command to the command list to be executed.
 * Exit PS command is handled specially, by placing it always to the
 * front of the command queue.
 */
void
mwifiex_insert_cmd_to_pending_q(struct mwifiex_adapter *adapter,
				struct cmd_ctrl_node *cmd_node, u32 add_tail)
{
	struct host_cmd_ds_command *host_cmd = NULL;
	u16 command;
	unsigned long flags;

	host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
	if (!host_cmd) {
		dev_err(adapter->dev, "QUEUE_CMD: host_cmd is NULL\n");
		return;
	}

	command = le16_to_cpu(host_cmd->command);

	/* Exit_PS command needs to be queued in the header always. */
	if (command == HostCmd_CMD_802_11_PS_MODE_ENH) {
		struct host_cmd_ds_802_11_ps_mode_enh *pm =
			&host_cmd->params.psmode_enh;
		if ((le16_to_cpu(pm->action) == DIS_PS)
		    || (le16_to_cpu(pm->action) == DIS_AUTO_PS)) {
			if (adapter->ps_state != PS_STATE_AWAKE)
				add_tail = false;
		}
	}

	spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
	if (add_tail)
		list_add_tail(&cmd_node->list, &adapter->cmd_pending_q);
	else
		list_add(&cmd_node->list, &adapter->cmd_pending_q);
	spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);

	dev_dbg(adapter->dev, "cmd: QUEUE_CMD: cmd=%#x is queued\n", command);
}

/*
 * This function executes the next command in command pending queue.
 *
 * This function will fail if a command is already in processing stage,
 * otherwise it will dequeue the first command from the command pending
 * queue and send to the firmware.
 *
 * If the device is currently in host sleep mode, any commands, except the
 * host sleep configuration command will de-activate the host sleep. For PS
 * mode, the function will put the firmware back to sleep if applicable.
 */
int mwifiex_exec_next_cmd(struct mwifiex_adapter *adapter)
{
611
612
	struct mwifiex_private *priv;
	struct cmd_ctrl_node *cmd_node;
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
	int ret = 0;
	struct host_cmd_ds_command *host_cmd;
	unsigned long cmd_flags;
	unsigned long cmd_pending_q_flags;

	/* Check if already in processing */
	if (adapter->curr_cmd) {
		dev_err(adapter->dev, "EXEC_NEXT_CMD: cmd in processing\n");
		return -1;
	}

	spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
	/* Check if any command is pending */
	spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
	if (list_empty(&adapter->cmd_pending_q)) {
		spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
				       cmd_pending_q_flags);
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
		return 0;
	}
	cmd_node = list_first_entry(&adapter->cmd_pending_q,
				    struct cmd_ctrl_node, list);
	spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
			       cmd_pending_q_flags);

	host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
	priv = cmd_node->priv;

	if (adapter->ps_state != PS_STATE_AWAKE) {
		dev_err(adapter->dev, "%s: cannot send cmd in sleep state,"
				" this should not happen\n", __func__);
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
		return ret;
	}

	spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
	list_del(&cmd_node->list);
	spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
			       cmd_pending_q_flags);

	spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
	ret = mwifiex_dnld_cmd_to_fw(priv, cmd_node);
	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
	/* Any command sent to the firmware when host is in sleep
	 * mode should de-configure host sleep. We should skip the
	 * host sleep configuration command itself though
	 */
	if (priv && (host_cmd->command !=
	     cpu_to_le16(HostCmd_CMD_802_11_HS_CFG_ENH))) {
		if (adapter->hs_activated) {
			adapter->is_hs_configured = false;
			mwifiex_hs_activated_event(priv, false);
		}
	}

	return ret;
}

/*
 * This function handles the command response.
 *
 * After processing, the function cleans the command node and puts
 * it back to the command free queue.
 */
int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter)
{
679
	struct host_cmd_ds_command *resp;
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
	struct mwifiex_private *priv =
		mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
	int ret = 0;
	uint16_t orig_cmdresp_no;
	uint16_t cmdresp_no;
	uint16_t cmdresp_result;
	struct timeval tstamp;
	unsigned long flags;

	/* Now we got response from FW, cancel the command timer */
	del_timer(&adapter->cmd_timer);

	if (!adapter->curr_cmd || !adapter->curr_cmd->resp_skb) {
		resp = (struct host_cmd_ds_command *) adapter->upld_buf;
		dev_err(adapter->dev, "CMD_RESP: NULL curr_cmd, %#x\n",
		       le16_to_cpu(resp->command));
		return -1;
	}

	adapter->num_cmd_timeout = 0;

	resp = (struct host_cmd_ds_command *) adapter->curr_cmd->resp_skb->data;
	if (adapter->curr_cmd->cmd_flag & CMD_F_CANCELED) {
		dev_err(adapter->dev, "CMD_RESP: %#x been canceled\n",
				le16_to_cpu(resp->command));
		mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
		adapter->curr_cmd = NULL;
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
		return -1;
	}

	if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
		/* Copy original response back to response buffer */
714
		struct mwifiex_ds_misc_cmd *hostcmd;
715
716
717
718
		uint16_t size = le16_to_cpu(resp->size);
		dev_dbg(adapter->dev, "info: host cmd resp size = %d\n", size);
		size = min_t(u16, size, MWIFIEX_SIZE_OF_CMD_BUFFER);
		if (adapter->curr_cmd->data_buf) {
719
			hostcmd = adapter->curr_cmd->data_buf;
720
			hostcmd->len = size;
721
			memcpy(hostcmd->cmd, resp, size);
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
		}
	}
	orig_cmdresp_no = le16_to_cpu(resp->command);

	/* Get BSS number and corresponding priv */
	priv = mwifiex_get_priv_by_id(adapter,
			HostCmd_GET_BSS_NO(le16_to_cpu(resp->seq_num)),
			HostCmd_GET_BSS_TYPE(le16_to_cpu(resp->seq_num)));
	if (!priv)
		priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
	/* Clear RET_BIT from HostCmd */
	resp->command = cpu_to_le16(orig_cmdresp_no & HostCmd_CMD_ID_MASK);

	cmdresp_no = le16_to_cpu(resp->command);
	cmdresp_result = le16_to_cpu(resp->result);

	/* Save the last command response to debug log */
	adapter->dbg.last_cmd_resp_index =
		(adapter->dbg.last_cmd_resp_index + 1) % DBG_CMD_NUM;
	adapter->dbg.last_cmd_resp_id[adapter->dbg.last_cmd_resp_index] =
		orig_cmdresp_no;

	do_gettimeofday(&tstamp);
	dev_dbg(adapter->dev, "cmd: CMD_RESP: (%lu.%lu): 0x%x, result %d,"
		" len %d, seqno 0x%x\n",
	       tstamp.tv_sec, tstamp.tv_usec, orig_cmdresp_no, cmdresp_result,
	       le16_to_cpu(resp->size), le16_to_cpu(resp->seq_num));

	if (!(orig_cmdresp_no & HostCmd_RET_BIT)) {
		dev_err(adapter->dev, "CMD_RESP: invalid cmd resp\n");
752
753
		if (adapter->curr_cmd->wait_q_enabled)
			adapter->cmd_wait_q.status = -1;
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768

		mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
		adapter->curr_cmd = NULL;
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
		return -1;
	}

	if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
		adapter->curr_cmd->cmd_flag &= ~CMD_F_HOSTCMD;
		if ((cmdresp_result == HostCmd_RESULT_OK)
		    && (cmdresp_no == HostCmd_CMD_802_11_HS_CFG_ENH))
			ret = mwifiex_ret_802_11_hs_cfg(priv, resp);
	} else {
		/* handle response */
769
		ret = mwifiex_process_sta_cmdresp(priv, cmdresp_no, resp);
770
771
772
773
	}

	/* Check init command response */
	if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) {
774
		if (ret) {
775
776
777
778
779
780
781
782
783
			dev_err(adapter->dev, "%s: cmd %#x failed during "
				"initialization\n", __func__, cmdresp_no);
			mwifiex_init_fw_complete(adapter);
			return -1;
		} else if (adapter->last_init_cmd == cmdresp_no)
			adapter->hw_status = MWIFIEX_HW_STATUS_INIT_DONE;
	}

	if (adapter->curr_cmd) {
784
785
		if (adapter->curr_cmd->wait_q_enabled)
			adapter->cmd_wait_q.status = ret;
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807

		/* Clean up and put current command back to cmd_free_q */
		mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);

		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
		adapter->curr_cmd = NULL;
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
	}

	return ret;
}

/*
 * This function handles the timeout of command sending.
 *
 * It will re-send the same command again.
 */
void
mwifiex_cmd_timeout_func(unsigned long function_context)
{
	struct mwifiex_adapter *adapter =
		(struct mwifiex_adapter *) function_context;
808
	struct cmd_ctrl_node *cmd_node;
809
810
811
812
813
814
815
816
817
	struct timeval tstamp;

	adapter->num_cmd_timeout++;
	adapter->dbg.num_cmd_timeout++;
	if (!adapter->curr_cmd) {
		dev_dbg(adapter->dev, "cmd: empty curr_cmd\n");
		return;
	}
	cmd_node = adapter->curr_cmd;
818
819
	if (cmd_node->wait_q_enabled)
		adapter->cmd_wait_q.status = -ETIMEDOUT;
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

	if (cmd_node) {
		adapter->dbg.timeout_cmd_id =
			adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index];
		adapter->dbg.timeout_cmd_act =
			adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index];
		do_gettimeofday(&tstamp);
		dev_err(adapter->dev, "%s: Timeout cmd id (%lu.%lu) = %#x,"
			" act = %#x\n", __func__,
		       tstamp.tv_sec, tstamp.tv_usec,
		       adapter->dbg.timeout_cmd_id,
		       adapter->dbg.timeout_cmd_act);

		dev_err(adapter->dev, "num_data_h2c_failure = %d\n",
		       adapter->dbg.num_tx_host_to_card_failure);
		dev_err(adapter->dev, "num_cmd_h2c_failure = %d\n",
		       adapter->dbg.num_cmd_host_to_card_failure);

		dev_err(adapter->dev, "num_cmd_timeout = %d\n",
		       adapter->dbg.num_cmd_timeout);
		dev_err(adapter->dev, "num_tx_timeout = %d\n",
		       adapter->dbg.num_tx_timeout);

		dev_err(adapter->dev, "last_cmd_index = %d\n",
		       adapter->dbg.last_cmd_index);
		print_hex_dump_bytes("last_cmd_id: ", DUMP_PREFIX_OFFSET,
				adapter->dbg.last_cmd_id, DBG_CMD_NUM);
		print_hex_dump_bytes("last_cmd_act: ", DUMP_PREFIX_OFFSET,
				adapter->dbg.last_cmd_act, DBG_CMD_NUM);

		dev_err(adapter->dev, "last_cmd_resp_index = %d\n",
		       adapter->dbg.last_cmd_resp_index);
		print_hex_dump_bytes("last_cmd_resp_id: ", DUMP_PREFIX_OFFSET,
				adapter->dbg.last_cmd_resp_id, DBG_CMD_NUM);

		dev_err(adapter->dev, "last_event_index = %d\n",
		       adapter->dbg.last_event_index);
		print_hex_dump_bytes("last_event: ", DUMP_PREFIX_OFFSET,
				adapter->dbg.last_event, DBG_CMD_NUM);

		dev_err(adapter->dev, "data_sent=%d cmd_sent=%d\n",
		       adapter->data_sent, adapter->cmd_sent);

		dev_err(adapter->dev, "ps_mode=%d ps_state=%d\n",
				adapter->ps_mode, adapter->ps_state);
	}
	if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING)
		mwifiex_init_fw_complete(adapter);
}

/*
 * This function cancels all the pending commands.
 *
 * The current command, all commands in command pending queue and all scan
 * commands in scan pending queue are cancelled. All the completion callbacks
 * are called with failure status to ensure cleanup.
 */
void
mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter)
{
880
	struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
881
882
883
	unsigned long flags;

	/* Cancel current cmd */
884
	if ((adapter->curr_cmd) && (adapter->curr_cmd->wait_q_enabled)) {
885
		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
886
		adapter->curr_cmd->wait_q_enabled = false;
887
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
888
		adapter->cmd_wait_q.status = -1;
889
		mwifiex_complete_cmd(adapter, adapter->curr_cmd);
890
891
892
893
894
895
896
897
	}
	/* Cancel all pending command */
	spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
	list_for_each_entry_safe(cmd_node, tmp_node,
				 &adapter->cmd_pending_q, list) {
		list_del(&cmd_node->list);
		spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);

898
899
		if (cmd_node->wait_q_enabled) {
			adapter->cmd_wait_q.status = -1;
900
			mwifiex_complete_cmd(adapter, cmd_node);
901
			cmd_node->wait_q_enabled = false;
902
903
904
905
906
907
908
909
910
911
912
913
914
		}
		mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
		spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
	}
	spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);

	/* Cancel all pending scan command */
	spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
	list_for_each_entry_safe(cmd_node, tmp_node,
				 &adapter->scan_pending_q, list) {
		list_del(&cmd_node->list);
		spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);

915
		cmd_node->wait_q_enabled = false;
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
		mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
		spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
	}
	spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);

	spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
	adapter->scan_processing = false;
	spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
}

/*
 * This function cancels all pending commands that matches with
 * the given IOCTL request.
 *
 * Both the current command buffer and the pending command queue are
 * searched for matching IOCTL request. The completion callback of
 * the matched command is called with failure status to ensure cleanup.
 * In case of scan commands, all pending commands in scan pending queue
 * are cancelled.
 */
void
937
mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter)
938
939
940
941
942
943
944
{
	struct cmd_ctrl_node *cmd_node = NULL, *tmp_node = NULL;
	unsigned long cmd_flags;
	unsigned long scan_pending_q_flags;
	uint16_t cancel_scan_cmd = false;

	if ((adapter->curr_cmd) &&
945
	     (adapter->curr_cmd->wait_q_enabled)) {
946
947
		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
		cmd_node = adapter->curr_cmd;
948
		cmd_node->wait_q_enabled = false;
949
950
		cmd_node->cmd_flag |= CMD_F_CANCELED;
		mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
951
952
		mwifiex_complete_cmd(adapter, adapter->curr_cmd);
		adapter->curr_cmd = NULL;
953
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
954
	}
955

956
957
958
959
960
	/* Cancel all pending scan command */
	spin_lock_irqsave(&adapter->scan_pending_q_lock,
			  scan_pending_q_flags);
	list_for_each_entry_safe(cmd_node, tmp_node,
				 &adapter->scan_pending_q, list) {
961
962
963
964
965
966
967
968
		list_del(&cmd_node->list);
		spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
				       scan_pending_q_flags);
		cmd_node->wait_q_enabled = false;
		mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
		spin_lock_irqsave(&adapter->scan_pending_q_lock,
				  scan_pending_q_flags);
		cancel_scan_cmd = true;
969
970
971
972
973
974
975
976
977
	}
	spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
			       scan_pending_q_flags);

	if (cancel_scan_cmd) {
		spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
		adapter->scan_processing = false;
		spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
	}
978
	adapter->cmd_wait_q.status = -1;
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
}

/*
 * This function sends the sleep confirm command to firmware, if
 * possible.
 *
 * The sleep confirm command cannot be issued if command response,
 * data response or event response is awaiting handling, or if we
 * are in the middle of sending a command, or expecting a command
 * response.
 */
void
mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
{
	if (!adapter->cmd_sent &&
	    !adapter->curr_cmd && !IS_CARD_RX_RCVD(adapter))
		mwifiex_dnld_sleep_confirm_cmd(adapter);
	else
		dev_dbg(adapter->dev,
			"cmd: Delay Sleep Confirm (%s%s%s)\n",
		       (adapter->cmd_sent) ? "D" : "",
		       (adapter->curr_cmd) ? "C" : "",
		       (IS_CARD_RX_RCVD(adapter)) ? "R" : "");
}

/*
 * This function sends a Host Sleep activated event to applications.
 *
 * This event is generated by the driver, with a blank event body.
 */
void
mwifiex_hs_activated_event(struct mwifiex_private *priv, u8 activated)
{
	if (activated) {
		if (priv->adapter->is_hs_configured) {
			priv->adapter->hs_activated = true;
			dev_dbg(priv->adapter->dev, "event: hs_activated\n");
			priv->adapter->hs_activate_wait_q_woken = true;
			wake_up_interruptible(
				&priv->adapter->hs_activate_wait_q);
		} else {
			dev_dbg(priv->adapter->dev, "event: HS not configured\n");
		}
	} else {
		dev_dbg(priv->adapter->dev, "event: hs_deactivated\n");
		priv->adapter->hs_activated = false;
	}
}

/*
 * This function handles the command response of a Host Sleep configuration
 * command.
 *
 * Handling includes changing the header fields into CPU format
 * and setting the current host sleep activation status in driver.
 *
 * In case host sleep status change, the function generates an event to
 * notify the applications.
 */
int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
			      struct host_cmd_ds_command *resp)
{
	struct mwifiex_adapter *adapter = priv->adapter;
	struct host_cmd_ds_802_11_hs_cfg_enh *phs_cfg =
		&resp->params.opt_hs_cfg;
	uint32_t conditions = le32_to_cpu(phs_cfg->params.hs_config.conditions);

	if (phs_cfg->action == cpu_to_le16(HS_ACTIVATE)) {
		mwifiex_hs_activated_event(priv, true);
		return 0;
	} else {
		dev_dbg(adapter->dev, "cmd: CMD_RESP: HS_CFG cmd reply"
			" result=%#x, conditions=0x%x gpio=0x%x gap=0x%x\n",
			resp->result, conditions,
		       phs_cfg->params.hs_config.gpio,
		       phs_cfg->params.hs_config.gap);
	}
	if (conditions != HOST_SLEEP_CFG_CANCEL) {
		adapter->is_hs_configured = true;
	} else {
		adapter->is_hs_configured = false;
		if (adapter->hs_activated)
			mwifiex_hs_activated_event(priv, false);
	}

	return 0;
}

/*
 * This function wakes up the adapter and generates a Host Sleep
 * cancel event on receiving the power up interrupt.
 */
void
mwifiex_process_hs_config(struct mwifiex_adapter *adapter)
{
	dev_dbg(adapter->dev, "info: %s: auto cancelling host sleep"
		" since there is interrupt from the firmware\n", __func__);

	adapter->if_ops.wakeup(adapter);
	adapter->hs_activated = false;
	adapter->is_hs_configured = false;
	mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
				   MWIFIEX_BSS_ROLE_ANY), false);
}

/*
 * This function handles the command response of a sleep confirm command.
 *
 * The function sets the card state to SLEEP if the response indicates success.
 */
void
mwifiex_process_sleep_confirm_resp(struct mwifiex_adapter *adapter,
				   u8 *pbuf, u32 upld_len)
{
	struct host_cmd_ds_command *cmd = (struct host_cmd_ds_command *) pbuf;
	struct mwifiex_private *priv =
		mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
	uint16_t result = le16_to_cpu(cmd->result);
	uint16_t command = le16_to_cpu(cmd->command);
	uint16_t seq_num = le16_to_cpu(cmd->seq_num);

	if (!upld_len) {
		dev_err(adapter->dev, "%s: cmd size is 0\n", __func__);
		return;
	}

	/* Get BSS number and corresponding priv */
	priv = mwifiex_get_priv_by_id(adapter, HostCmd_GET_BSS_NO(seq_num),
				      HostCmd_GET_BSS_TYPE(seq_num));
	if (!priv)
		priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);

	/* Update sequence number */
	seq_num = HostCmd_GET_SEQ_NO(seq_num);
	/* Clear RET_BIT from HostCmd */
	command &= HostCmd_CMD_ID_MASK;

	if (command != HostCmd_CMD_802_11_PS_MODE_ENH) {
		dev_err(adapter->dev, "%s: received unexpected response for"
			" cmd %x, result = %x\n", __func__, command, result);
		return;
	}

	if (result) {
		dev_err(adapter->dev, "%s: sleep confirm cmd failed\n",
						__func__);
		adapter->pm_wakeup_card_req = false;
		adapter->ps_state = PS_STATE_AWAKE;
		return;
	}
	adapter->pm_wakeup_card_req = true;
	if (adapter->is_hs_configured)
		mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
					   MWIFIEX_BSS_ROLE_ANY), true);
	adapter->ps_state = PS_STATE_SLEEP;
	cmd->command = cpu_to_le16(command);
	cmd->seq_num = cpu_to_le16(seq_num);
}
EXPORT_SYMBOL_GPL(mwifiex_process_sleep_confirm_resp);

/*
 * This function prepares an enhanced power mode command.
 *
 * This function can be used to disable power save or to configure
 * power save with auto PS or STA PS or auto deep sleep.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting Power Save bitmap, PS parameters TLV, PS mode TLV,
 *        auto deep sleep TLV (as required)
 *      - Ensuring correct endian-ness
 */
int mwifiex_cmd_enh_power_mode(struct mwifiex_private *priv,
			       struct host_cmd_ds_command *cmd,
			       u16 cmd_action, uint16_t ps_bitmap,
1154
			       struct mwifiex_ds_auto_ds *auto_ds)
1155
1156
1157
{
	struct host_cmd_ds_802_11_ps_mode_enh *psmode_enh =
		&cmd->params.psmode_enh;
1158
	u8 *tlv;
1159
1160
1161
1162
1163
1164
	u16 cmd_size = 0;

	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
	if (cmd_action == DIS_AUTO_PS) {
		psmode_enh->action = cpu_to_le16(DIS_AUTO_PS);
		psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1165
1166
		cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
				sizeof(psmode_enh->params.ps_bitmap));
1167
1168
1169
	} else if (cmd_action == GET_PS) {
		psmode_enh->action = cpu_to_le16(GET_PS);
		psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1170
1171
		cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
				sizeof(psmode_enh->params.ps_bitmap));
1172
1173
	} else if (cmd_action == EN_AUTO_PS) {
		psmode_enh->action = cpu_to_le16(EN_AUTO_PS);
1174
1175
1176
		psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
		cmd_size = S_DS_GEN + sizeof(psmode_enh->action) +
				sizeof(psmode_enh->params.ps_bitmap);
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
		tlv = (u8 *) cmd + cmd_size;
		if (ps_bitmap & BITMAP_STA_PS) {
			struct mwifiex_adapter *adapter = priv->adapter;
			struct mwifiex_ie_types_ps_param *ps_tlv =
				(struct mwifiex_ie_types_ps_param *) tlv;
			struct mwifiex_ps_param *ps_mode = &ps_tlv->param;
			ps_tlv->header.type = cpu_to_le16(TLV_TYPE_PS_PARAM);
			ps_tlv->header.len = cpu_to_le16(sizeof(*ps_tlv) -
					sizeof(struct mwifiex_ie_types_header));
			cmd_size += sizeof(*ps_tlv);
			tlv += sizeof(*ps_tlv);
			dev_dbg(adapter->dev, "cmd: PS Command: Enter PS\n");
			ps_mode->null_pkt_interval =
				cpu_to_le16(adapter->null_pkt_interval);
			ps_mode->multiple_dtims =
				cpu_to_le16(adapter->multiple_dtim);
			ps_mode->bcn_miss_timeout =
				cpu_to_le16(adapter->bcn_miss_time_out);
			ps_mode->local_listen_interval =
				cpu_to_le16(adapter->local_listen_interval);
			ps_mode->adhoc_wake_period =
				cpu_to_le16(adapter->adhoc_awake_period);
			ps_mode->delay_to_ps =
				cpu_to_le16(adapter->delay_to_ps);
			ps_mode->mode =
				cpu_to_le16(adapter->enhanced_ps_mode);

		}
		if (ps_bitmap & BITMAP_AUTO_DS) {
1206
			struct mwifiex_ie_types_auto_ds_param *auto_ds_tlv =
1207
1208
				(struct mwifiex_ie_types_auto_ds_param *) tlv;
			u16 idletime = 0;
1209
1210

			auto_ds_tlv->header.type =
1211
				cpu_to_le16(TLV_TYPE_AUTO_DS_PARAM);
1212
1213
			auto_ds_tlv->header.len =
				cpu_to_le16(sizeof(*auto_ds_tlv) -
1214
					sizeof(struct mwifiex_ie_types_header));
1215
1216
			cmd_size += sizeof(*auto_ds_tlv);
			tlv += sizeof(*auto_ds_tlv);
1217
1218
			if (auto_ds)
				idletime = auto_ds->idle_time;
1219
1220
			dev_dbg(priv->adapter->dev,
					"cmd: PS Command: Enter Auto Deep Sleep\n");
1221
			auto_ds_tlv->deep_sleep_timeout = cpu_to_le16(idletime);
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
		}
		cmd->size = cpu_to_le16(cmd_size);
	}
	return 0;
}

/*
 * This function handles the command response of an enhanced power mode
 * command.
 *
 * Handling includes changing the header fields into CPU format
 * and setting the current enhanced power mode in driver.
 */
int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv,
			       struct host_cmd_ds_command *resp,
1237
			       struct mwifiex_ds_pm_cfg *pm_cfg)
1238
1239
1240
1241
1242
1243
1244
{
	struct mwifiex_adapter *adapter = priv->adapter;
	struct host_cmd_ds_802_11_ps_mode_enh *ps_mode =
		&resp->params.psmode_enh;
	uint16_t action = le16_to_cpu(ps_mode->action);
	uint16_t ps_bitmap = le16_to_cpu(ps_mode->params.ps_bitmap);
	uint16_t auto_ps_bitmap =
1245
		le16_to_cpu(ps_mode->params.ps_bitmap);
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272

	dev_dbg(adapter->dev, "info: %s: PS_MODE cmd reply result=%#x action=%#X\n",
					__func__, resp->result, action);
	if (action == EN_AUTO_PS) {
		if (auto_ps_bitmap & BITMAP_AUTO_DS) {
			dev_dbg(adapter->dev, "cmd: Enabled auto deep sleep\n");
			priv->adapter->is_deep_sleep = true;
		}
		if (auto_ps_bitmap & BITMAP_STA_PS) {
			dev_dbg(adapter->dev, "cmd: Enabled STA power save\n");
			if (adapter->sleep_period.period)
				dev_dbg(adapter->dev, "cmd: set to uapsd/pps mode\n");
		}
	} else if (action == DIS_AUTO_PS) {
		if (ps_bitmap & BITMAP_AUTO_DS) {
			priv->adapter->is_deep_sleep = false;
			dev_dbg(adapter->dev, "cmd: Disabled auto deep sleep\n");
		}
		if (ps_bitmap & BITMAP_STA_PS) {
			dev_dbg(adapter->dev, "cmd: Disabled STA power save\n");
			if (adapter->sleep_period.period) {
				adapter->delay_null_pkt = false;
				adapter->tx_lock_flag = false;
				adapter->pps_uapsd_mode = false;
			}
		}
	} else if (action == GET_PS) {
1273
		if (ps_bitmap & BITMAP_STA_PS)
1274
1275
1276
1277
1278
1279
			adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
		else
			adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;

		dev_dbg(adapter->dev, "cmd: ps_bitmap=%#x\n", ps_bitmap);

1280
		if (pm_cfg) {
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
			/* This section is for get power save mode */
			if (ps_bitmap & BITMAP_STA_PS)
				pm_cfg->param.ps_mode = 1;
			else
				pm_cfg->param.ps_mode = 0;
		}
	}
	return 0;
}

/*
 * This function prepares command to get hardware specifications.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting permanent address parameter
 *      - Ensuring correct endian-ness
 */
int mwifiex_cmd_get_hw_spec(struct mwifiex_private *priv,
			    struct host_cmd_ds_command *cmd)
{
	struct host_cmd_ds_get_hw_spec *hw_spec = &cmd->params.hw_spec;

	cmd->command = cpu_to_le16(HostCmd_CMD_GET_HW_SPEC);
	cmd->size =
		cpu_to_le16(sizeof(struct host_cmd_ds_get_hw_spec) + S_DS_GEN);
	memcpy(hw_spec->permanent_addr, priv->curr_addr, ETH_ALEN);

	return 0;
}

/*
 * This function handles the command response of get hardware
 * specifications.
 *
 * Handling includes changing the header fields into CPU format
 * and saving/updating the following parameters in driver -
 *      - Firmware capability information
 *      - Firmware band settings
 *      - Ad-hoc start band and channel
 *      - Ad-hoc 11n activation status
 *      - Firmware release number
 *      - Number of antennas
 *      - Hardware address
 *      - Hardware interface version
 *      - Firmware version
 *      - Region code
 *      - 11n capabilities
 *      - MCS support fields
 *      - MP end port
 */
int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
			    struct host_cmd_ds_command *resp)
{
	struct host_cmd_ds_get_hw_spec *hw_spec = &resp->params.hw_spec;
	struct mwifiex_adapter *adapter = priv->adapter;
	int i;

	adapter->fw_cap_info = le32_to_cpu(hw_spec->fw_cap_info);

	if (IS_SUPPORT_MULTI_BANDS(adapter))
		adapter->fw_bands = (u8) GET_FW_DEFAULT_BANDS(adapter);
	else
		adapter->fw_bands = BAND_B;

	adapter->config_bands = adapter->fw_bands;

	if (adapter->fw_bands & BAND_A) {
		if (adapter->fw_bands & BAND_GN) {
			adapter->config_bands |= BAND_AN;
			adapter->fw_bands |= BAND_AN;
		}
		if (adapter->fw_bands & BAND_AN) {
			adapter->adhoc_start_band = BAND_A | BAND_AN;
			adapter->adhoc_11n_enabled = true;
		} else {
			adapter->adhoc_start_band = BAND_A;
		}
		priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL_A;
	} else if (adapter->fw_bands & BAND_GN) {
		adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
		priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
		adapter->adhoc_11n_enabled = true;
	} else if (adapter->fw_bands & BAND_G) {
		adapter->adhoc_start_band = BAND_G | BAND_B;
		priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
	} else if (adapter->fw_bands & BAND_B) {
		adapter->adhoc_start_band = BAND_B;
		priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
	}

	adapter->fw_release_number = le32_to_cpu(hw_spec->fw_release_number);
	adapter->number_of_antenna = le16_to_cpu(hw_spec->number_of_antenna);

	dev_dbg(adapter->dev, "info: GET_HW_SPEC: fw_release_number- %#x\n",
	       adapter->fw_release_number);
	dev_dbg(adapter->dev, "info: GET_HW_SPEC: permanent addr: %pM\n",
					hw_spec->permanent_addr);
	dev_dbg(adapter->dev, "info: GET_HW_SPEC: hw_if_version=%#x  version=%#x\n",
		le16_to_cpu(hw_spec->hw_if_version),
	       le16_to_cpu(hw_spec->version));

	if (priv->curr_addr[0] == 0xff)
		memmove(priv->curr_addr, hw_spec->permanent_addr, ETH_ALEN);

	adapter->region_code = le16_to_cpu(hw_spec->region_code);

	for (i = 0; i < MWIFIEX_MAX_REGION_CODE; i++)
		/* Use the region code to search for the index */
		if (adapter->region_code == region_code_index[i])
			break;

	/* If it's unidentified region code, use the default (USA) */
	if (i >= MWIFIEX_MAX_REGION_CODE) {
		adapter->region_code = 0x10;
		dev_dbg(adapter->dev, "cmd: unknown region code, use default (USA)\n");
	}

	adapter->hw_dot_11n_dev_cap = le32_to_cpu(hw_spec->dot_11n_dev_cap);
	adapter->hw_dev_mcs_support = hw_spec->dev_mcs_support;

	if (adapter->if_ops.update_mp_end_port)
		adapter->if_ops.update_mp_end_port(adapter,
					le16_to_cpu(hw_spec->mp_end_port));

	return 0;
}