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Viewing changes to drivers/net/wireless/mwifiex/cmdevt.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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drivers/net/wireless/mwifiex/cmdevt.c
 
1
/*
 
2
 * Marvell Wireless LAN device driver: commands and events
 
3
 *
 
4
 * Copyright (C) 2011, Marvell International Ltd.
 
5
 *
 
6
 * This software file (the "File") is distributed by Marvell International
 
7
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 
8
 * (the "License").  You may use, redistribute and/or modify this File in
 
9
 * accordance with the terms and conditions of the License, a copy of which
 
10
 * is available by writing to the Free Software Foundation, Inc.,
 
11
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 
12
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 
13
 *
 
14
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 
15
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 
16
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 
17
 * this warranty disclaimer.
 
18
 */
 
19
 
 
20
#include "decl.h"
 
21
#include "ioctl.h"
 
22
#include "util.h"
 
23
#include "fw.h"
 
24
#include "main.h"
 
25
#include "wmm.h"
 
26
#include "11n.h"
 
27
 
 
28
/*
 
29
 * This function initializes a command node.
 
30
 *
 
31
 * The actual allocation of the node is not done by this function. It only
 
32
 * initiates a node by filling it with default parameters. Similarly,
 
33
 * allocation of the different buffers used (IOCTL buffer, data buffer) are
 
34
 * not done by this function either.
 
35
 */
 
36
static void
 
37
mwifiex_init_cmd_node(struct mwifiex_private *priv,
 
38
                      struct cmd_ctrl_node *cmd_node,
 
39
                      u32 cmd_oid, void *data_buf)
 
40
{
 
41
        cmd_node->priv = priv;
 
42
        cmd_node->cmd_oid = cmd_oid;
 
43
        if (priv->adapter->cmd_wait_q_required) {
 
44
                cmd_node->wait_q_enabled = priv->adapter->cmd_wait_q_required;
 
45
                priv->adapter->cmd_wait_q_required = false;
 
46
                cmd_node->cmd_wait_q_woken = false;
 
47
                cmd_node->condition = &cmd_node->cmd_wait_q_woken;
 
48
        }
 
49
        cmd_node->data_buf = data_buf;
 
50
        cmd_node->cmd_skb = cmd_node->skb;
 
51
}
 
52
 
 
53
/*
 
54
 * This function returns a command node from the free queue depending upon
 
55
 * availability.
 
56
 */
 
57
static struct cmd_ctrl_node *
 
58
mwifiex_get_cmd_node(struct mwifiex_adapter *adapter)
 
59
{
 
60
        struct cmd_ctrl_node *cmd_node;
 
61
        unsigned long flags;
 
62
 
 
63
        spin_lock_irqsave(&adapter->cmd_free_q_lock, flags);
 
64
        if (list_empty(&adapter->cmd_free_q)) {
 
65
                dev_err(adapter->dev, "GET_CMD_NODE: cmd node not available\n");
 
66
                spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
 
67
                return NULL;
 
68
        }
 
69
        cmd_node = list_first_entry(&adapter->cmd_free_q,
 
70
                        struct cmd_ctrl_node, list);
 
71
        list_del(&cmd_node->list);
 
72
        spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
 
73
 
 
74
        return cmd_node;
 
75
}
 
76
 
 
77
/*
 
78
 * This function cleans up a command node.
 
79
 *
 
80
 * The function resets the fields including the buffer pointers.
 
81
 * This function does not try to free the buffers. They must be
 
82
 * freed before calling this function.
 
83
 *
 
84
 * This function will however call the receive completion callback
 
85
 * in case a response buffer is still available before resetting
 
86
 * the pointer.
 
87
 */
 
88
static void
 
89
mwifiex_clean_cmd_node(struct mwifiex_adapter *adapter,
 
90
                       struct cmd_ctrl_node *cmd_node)
 
91
{
 
92
        cmd_node->cmd_oid = 0;
 
93
        cmd_node->cmd_flag = 0;
 
94
        cmd_node->data_buf = NULL;
 
95
        cmd_node->wait_q_enabled = false;
 
96
 
 
97
        if (cmd_node->cmd_skb)
 
98
                skb_trim(cmd_node->cmd_skb, 0);
 
99
 
 
100
        if (cmd_node->resp_skb) {
 
101
                adapter->if_ops.cmdrsp_complete(adapter, cmd_node->resp_skb);
 
102
                cmd_node->resp_skb = NULL;
 
103
        }
 
104
}
 
105
 
 
106
/*
 
107
 * This function sends a host command to the firmware.
 
108
 *
 
109
 * The function copies the host command into the driver command
 
110
 * buffer, which will be transferred to the firmware later by the
 
111
 * main thread.
 
112
 */
 
113
static int mwifiex_cmd_host_cmd(struct mwifiex_private *priv,
 
114
                                struct host_cmd_ds_command *cmd,
 
115
                                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
        dev_dbg(priv->adapter->dev, "cmd: host cmd size = %d\n", pcmd_ptr->len);
 
120
        return 0;
 
121
}
 
122
 
 
123
/*
 
124
 * This function downloads a command to the firmware.
 
125
 *
 
126
 * The function performs sanity tests, sets the command sequence
 
127
 * number and size, converts the header fields to CPU format before
 
128
 * sending. Afterwards, it logs the command ID and action for debugging
 
129
 * and sets up the command timeout timer.
 
130
 */
 
131
static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
 
132
                                  struct cmd_ctrl_node *cmd_node)
 
133
{
 
134
 
 
135
        struct mwifiex_adapter *adapter = priv->adapter;
 
136
        int ret;
 
137
        struct host_cmd_ds_command *host_cmd;
 
138
        uint16_t cmd_code;
 
139
        uint16_t cmd_size;
 
140
        struct timeval tstamp;
 
141
        unsigned long flags;
 
142
 
 
143
        if (!adapter || !cmd_node)
 
144
                return -1;
 
145
 
 
146
        host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 
147
 
 
148
        /* Sanity test */
 
149
        if (host_cmd == NULL || host_cmd->size == 0) {
 
150
                dev_err(adapter->dev, "DNLD_CMD: host_cmd is null"
 
151
                        " or cmd size is 0, not sending\n");
 
152
                if (cmd_node->wait_q_enabled)
 
153
                        adapter->cmd_wait_q.status = -1;
 
154
                mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 
155
                return -1;
 
156
        }
 
157
 
 
158
        /* Set command sequence number */
 
159
        adapter->seq_num++;
 
160
        host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
 
161
                            (adapter->seq_num, cmd_node->priv->bss_num,
 
162
                             cmd_node->priv->bss_type));
 
163
 
 
164
        spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 
165
        adapter->curr_cmd = cmd_node;
 
166
        spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 
167
 
 
168
        cmd_code = le16_to_cpu(host_cmd->command);
 
169
        cmd_size = le16_to_cpu(host_cmd->size);
 
170
 
 
171
        skb_trim(cmd_node->cmd_skb, cmd_size);
 
172
 
 
173
        do_gettimeofday(&tstamp);
 
174
        dev_dbg(adapter->dev, "cmd: DNLD_CMD: (%lu.%lu): %#x, act %#x, len %d,"
 
175
                " seqno %#x\n",
 
176
                tstamp.tv_sec, tstamp.tv_usec, cmd_code,
 
177
               le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN)), cmd_size,
 
178
               le16_to_cpu(host_cmd->seq_num));
 
179
 
 
180
        skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);
 
181
 
 
182
        ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
 
183
                                           cmd_node->cmd_skb, NULL);
 
184
 
 
185
        skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);
 
186
 
 
187
        if (ret == -1) {
 
188
                dev_err(adapter->dev, "DNLD_CMD: host to card failed\n");
 
189
                if (cmd_node->wait_q_enabled)
 
190
                        adapter->cmd_wait_q.status = -1;
 
191
                mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
 
192
 
 
193
                spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 
194
                adapter->curr_cmd = NULL;
 
195
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 
196
 
 
197
                adapter->dbg.num_cmd_host_to_card_failure++;
 
198
                return -1;
 
199
        }
 
200
 
 
201
        /* Save the last command id and action to debug log */
 
202
        adapter->dbg.last_cmd_index =
 
203
                (adapter->dbg.last_cmd_index + 1) % DBG_CMD_NUM;
 
204
        adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index] = cmd_code;
 
205
        adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index] =
 
206
                le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN));
 
207
 
 
208
        /* Clear BSS_NO_BITS from HostCmd */
 
209
        cmd_code &= HostCmd_CMD_ID_MASK;
 
210
 
 
211
        /* Setup the timer after transmit command */
 
212
        mod_timer(&adapter->cmd_timer,
 
213
                jiffies + (MWIFIEX_TIMER_10S * HZ) / 1000);
 
214
 
 
215
        return 0;
 
216
}
 
217
 
 
218
/*
 
219
 * This function downloads a sleep confirm command to the firmware.
 
220
 *
 
221
 * The function performs sanity tests, sets the command sequence
 
222
 * number and size, converts the header fields to CPU format before
 
223
 * sending.
 
224
 *
 
225
 * No responses are needed for sleep confirm command.
 
226
 */
 
227
static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
 
228
{
 
229
        int ret;
 
230
        struct mwifiex_private *priv;
 
231
        struct mwifiex_opt_sleep_confirm *sleep_cfm_buf =
 
232
                                (struct mwifiex_opt_sleep_confirm *)
 
233
                                adapter->sleep_cfm->data;
 
234
        priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
235
 
 
236
        sleep_cfm_buf->seq_num =
 
237
                cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO
 
238
                                        (adapter->seq_num, priv->bss_num,
 
239
                                         priv->bss_type)));
 
240
        adapter->seq_num++;
 
241
 
 
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
        if (ret == -1) {
 
248
                dev_err(adapter->dev, "SLEEP_CFM: failed\n");
 
249
                adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure++;
 
250
                return -1;
 
251
        }
 
252
        if (GET_BSS_ROLE(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY))
 
253
                        == MWIFIEX_BSS_ROLE_STA) {
 
254
                if (!sleep_cfm_buf->resp_ctrl)
 
255
                        /* Response is not needed for sleep
 
256
                           confirm command */
 
257
                        adapter->ps_state = PS_STATE_SLEEP;
 
258
                else
 
259
                        adapter->ps_state = PS_STATE_SLEEP_CFM;
 
260
 
 
261
                if (!sleep_cfm_buf->resp_ctrl
 
262
                                && (adapter->is_hs_configured
 
263
                                        && !adapter->sleep_period.period)) {
 
264
                        adapter->pm_wakeup_card_req = true;
 
265
                        mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
 
266
                                                MWIFIEX_BSS_ROLE_STA), true);
 
267
                }
 
268
        }
 
269
 
 
270
        return ret;
 
271
}
 
272
 
 
273
/*
 
274
 * This function allocates the command buffers and links them to
 
275
 * the command free queue.
 
276
 *
 
277
 * The driver uses a pre allocated number of command buffers, which
 
278
 * are created at driver initializations and freed at driver cleanup.
 
279
 * Every command needs to obtain a command buffer from this pool before
 
280
 * it can be issued. The command free queue lists the command buffers
 
281
 * currently free to use, while the command pending queue lists the
 
282
 * command buffers already in use and awaiting handling. Command buffers
 
283
 * are returned to the free queue after use.
 
284
 */
 
285
int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter)
 
286
{
 
287
        struct cmd_ctrl_node *cmd_array;
 
288
        u32 buf_size;
 
289
        u32 i;
 
290
 
 
291
        /* Allocate and initialize struct cmd_ctrl_node */
 
292
        buf_size = sizeof(struct cmd_ctrl_node) * MWIFIEX_NUM_OF_CMD_BUFFER;
 
293
        cmd_array = kzalloc(buf_size, GFP_KERNEL);
 
294
        if (!cmd_array) {
 
295
                dev_err(adapter->dev, "%s: failed to alloc cmd_array\n",
 
296
                                __func__);
 
297
                return -ENOMEM;
 
298
        }
 
299
 
 
300
        adapter->cmd_pool = cmd_array;
 
301
        memset(adapter->cmd_pool, 0, buf_size);
 
302
 
 
303
        /* Allocate and initialize command buffers */
 
304
        for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
 
305
                cmd_array[i].skb = dev_alloc_skb(MWIFIEX_SIZE_OF_CMD_BUFFER);
 
306
                if (!cmd_array[i].skb) {
 
307
                        dev_err(adapter->dev, "ALLOC_CMD_BUF: out of memory\n");
 
308
                        return -1;
 
309
                }
 
310
        }
 
311
 
 
312
        for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++)
 
313
                mwifiex_insert_cmd_to_free_q(adapter, &cmd_array[i]);
 
314
 
 
315
        return 0;
 
316
}
 
317
 
 
318
/*
 
319
 * This function frees the command buffers.
 
320
 *
 
321
 * The function calls the completion callback for all the command
 
322
 * buffers that still have response buffers associated with them.
 
323
 */
 
324
int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
 
325
{
 
326
        struct cmd_ctrl_node *cmd_array;
 
327
        u32 i;
 
328
 
 
329
        /* Need to check if cmd pool is allocated or not */
 
330
        if (!adapter->cmd_pool) {
 
331
                dev_dbg(adapter->dev, "info: FREE_CMD_BUF: cmd_pool is null\n");
 
332
                return 0;
 
333
        }
 
334
 
 
335
        cmd_array = adapter->cmd_pool;
 
336
 
 
337
        /* Release shared memory buffers */
 
338
        for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
 
339
                if (cmd_array[i].skb) {
 
340
                        dev_dbg(adapter->dev, "cmd: free cmd buffer %d\n", i);
 
341
                        dev_kfree_skb_any(cmd_array[i].skb);
 
342
                }
 
343
                if (!cmd_array[i].resp_skb)
 
344
                        continue;
 
345
                dev_kfree_skb_any(cmd_array[i].resp_skb);
 
346
        }
 
347
        /* Release struct cmd_ctrl_node */
 
348
        if (adapter->cmd_pool) {
 
349
                dev_dbg(adapter->dev, "cmd: free cmd pool\n");
 
350
                kfree(adapter->cmd_pool);
 
351
                adapter->cmd_pool = NULL;
 
352
        }
 
353
 
 
354
        return 0;
 
355
}
 
356
 
 
357
/*
 
358
 * This function handles events generated by firmware.
 
359
 *
 
360
 * Event body of events received from firmware are not used (though they are
 
361
 * saved), only the event ID is used. Some events are re-invoked by
 
362
 * the driver, with a new event body.
 
363
 *
 
364
 * After processing, the function calls the completion callback
 
365
 * for cleanup.
 
366
 */
 
367
int mwifiex_process_event(struct mwifiex_adapter *adapter)
 
368
{
 
369
        int ret;
 
370
        struct mwifiex_private *priv =
 
371
                mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
372
        struct sk_buff *skb = adapter->event_skb;
 
373
        u32 eventcause = adapter->event_cause;
 
374
        struct timeval tstamp;
 
375
        struct mwifiex_rxinfo *rx_info;
 
376
 
 
377
        /* Save the last event to debug log */
 
378
        adapter->dbg.last_event_index =
 
379
                (adapter->dbg.last_event_index + 1) % DBG_CMD_NUM;
 
380
        adapter->dbg.last_event[adapter->dbg.last_event_index] =
 
381
                (u16) eventcause;
 
382
 
 
383
        /* Get BSS number and corresponding priv */
 
384
        priv = mwifiex_get_priv_by_id(adapter, EVENT_GET_BSS_NUM(eventcause),
 
385
                                      EVENT_GET_BSS_TYPE(eventcause));
 
386
        if (!priv)
 
387
                priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
388
        /* Clear BSS_NO_BITS from event */
 
389
        eventcause &= EVENT_ID_MASK;
 
390
        adapter->event_cause = eventcause;
 
391
 
 
392
        if (skb) {
 
393
                rx_info = MWIFIEX_SKB_RXCB(skb);
 
394
                rx_info->bss_index = priv->bss_index;
 
395
        }
 
396
 
 
397
        if (eventcause != EVENT_PS_SLEEP && eventcause != EVENT_PS_AWAKE) {
 
398
                do_gettimeofday(&tstamp);
 
399
                dev_dbg(adapter->dev, "event: %lu.%lu: cause: %#x\n",
 
400
                       tstamp.tv_sec, tstamp.tv_usec, eventcause);
 
401
        }
 
402
 
 
403
        ret = mwifiex_process_sta_event(priv);
 
404
 
 
405
        adapter->event_cause = 0;
 
406
        adapter->event_skb = NULL;
 
407
        adapter->if_ops.event_complete(adapter, skb);
 
408
 
 
409
        return ret;
 
410
}
 
411
 
 
412
/*
 
413
 * This function is used to send synchronous command to the firmware.
 
414
 *
 
415
 * it allocates a wait queue for the command and wait for the command
 
416
 * response.
 
417
 */
 
418
int mwifiex_send_cmd_sync(struct mwifiex_private *priv, uint16_t cmd_no,
 
419
                          u16 cmd_action, u32 cmd_oid, void *data_buf)
 
420
{
 
421
        int ret = 0;
 
422
        struct mwifiex_adapter *adapter = priv->adapter;
 
423
 
 
424
        adapter->cmd_wait_q_required = true;
 
425
 
 
426
        ret = mwifiex_send_cmd_async(priv, cmd_no, cmd_action, cmd_oid,
 
427
                                     data_buf);
 
428
        if (!ret)
 
429
                ret = mwifiex_wait_queue_complete(adapter);
 
430
 
 
431
        return ret;
 
432
}
 
433
 
 
434
 
 
435
/*
 
436
 * This function prepares a command and asynchronously send it to the firmware.
 
437
 *
 
438
 * Preparation includes -
 
439
 *      - Sanity tests to make sure the card is still present or the FW
 
440
 *        is not reset
 
441
 *      - Getting a new command node from the command free queue
 
442
 *      - Initializing the command node for default parameters
 
443
 *      - Fill up the non-default parameters and buffer pointers
 
444
 *      - Add the command to pending queue
 
445
 */
 
446
int mwifiex_send_cmd_async(struct mwifiex_private *priv, uint16_t cmd_no,
 
447
                           u16 cmd_action, u32 cmd_oid, void *data_buf)
 
448
{
 
449
        int ret;
 
450
        struct mwifiex_adapter *adapter = priv->adapter;
 
451
        struct cmd_ctrl_node *cmd_node;
 
452
        struct host_cmd_ds_command *cmd_ptr;
 
453
 
 
454
        if (!adapter) {
 
455
                pr_err("PREP_CMD: adapter is NULL\n");
 
456
                return -1;
 
457
        }
 
458
 
 
459
        if (adapter->is_suspended) {
 
460
                dev_err(adapter->dev, "PREP_CMD: device in suspended state\n");
 
461
                return -1;
 
462
        }
 
463
 
 
464
        if (adapter->surprise_removed) {
 
465
                dev_err(adapter->dev, "PREP_CMD: card is removed\n");
 
466
                return -1;
 
467
        }
 
468
 
 
469
        if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET) {
 
470
                if (cmd_no != HostCmd_CMD_FUNC_INIT) {
 
471
                        dev_err(adapter->dev, "PREP_CMD: FW in reset state\n");
 
472
                        return -1;
 
473
                }
 
474
        }
 
475
 
 
476
        /* Get a new command node */
 
477
        cmd_node = mwifiex_get_cmd_node(adapter);
 
478
 
 
479
        if (!cmd_node) {
 
480
                dev_err(adapter->dev, "PREP_CMD: no free cmd node\n");
 
481
                return -1;
 
482
        }
 
483
 
 
484
        /* Initialize the command node */
 
485
        mwifiex_init_cmd_node(priv, cmd_node, cmd_oid, data_buf);
 
486
 
 
487
        if (!cmd_node->cmd_skb) {
 
488
                dev_err(adapter->dev, "PREP_CMD: no free cmd buf\n");
 
489
                return -1;
 
490
        }
 
491
 
 
492
        memset(skb_put(cmd_node->cmd_skb, sizeof(struct host_cmd_ds_command)),
 
493
               0, sizeof(struct host_cmd_ds_command));
 
494
 
 
495
        cmd_ptr = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 
496
        cmd_ptr->command = cpu_to_le16(cmd_no);
 
497
        cmd_ptr->result = 0;
 
498
 
 
499
        /* Prepare command */
 
500
        if (cmd_no) {
 
501
                ret = mwifiex_sta_prepare_cmd(priv, cmd_no, cmd_action,
 
502
                                              cmd_oid, data_buf, cmd_ptr);
 
503
        } else {
 
504
                ret = mwifiex_cmd_host_cmd(priv, cmd_ptr, data_buf);
 
505
                cmd_node->cmd_flag |= CMD_F_HOSTCMD;
 
506
        }
 
507
 
 
508
        /* Return error, since the command preparation failed */
 
509
        if (ret) {
 
510
                dev_err(adapter->dev, "PREP_CMD: cmd %#x preparation failed\n",
 
511
                                                        cmd_no);
 
512
                mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 
513
                return -1;
 
514
        }
 
515
 
 
516
        /* Send command */
 
517
        if (cmd_no == HostCmd_CMD_802_11_SCAN) {
 
518
                mwifiex_queue_scan_cmd(priv, cmd_node);
 
519
        } else {
 
520
                adapter->cmd_queued = cmd_node;
 
521
                mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
 
522
        }
 
523
 
 
524
        return ret;
 
525
}
 
526
 
 
527
/*
 
528
 * This function returns a command to the command free queue.
 
529
 *
 
530
 * The function also calls the completion callback if required, before
 
531
 * cleaning the command node and re-inserting it into the free queue.
 
532
 */
 
533
void
 
534
mwifiex_insert_cmd_to_free_q(struct mwifiex_adapter *adapter,
 
535
                             struct cmd_ctrl_node *cmd_node)
 
536
{
 
537
        unsigned long flags;
 
538
 
 
539
        if (!cmd_node)
 
540
                return;
 
541
 
 
542
        if (cmd_node->wait_q_enabled)
 
543
                mwifiex_complete_cmd(adapter, cmd_node);
 
544
        /* Clean the node */
 
545
        mwifiex_clean_cmd_node(adapter, cmd_node);
 
546
 
 
547
        /* Insert node into cmd_free_q */
 
548
        spin_lock_irqsave(&adapter->cmd_free_q_lock, flags);
 
549
        list_add_tail(&cmd_node->list, &adapter->cmd_free_q);
 
550
        spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
 
551
}
 
552
 
 
553
/*
 
554
 * This function queues a command to the command pending queue.
 
555
 *
 
556
 * This in effect adds the command to the command list to be executed.
 
557
 * Exit PS command is handled specially, by placing it always to the
 
558
 * front of the command queue.
 
559
 */
 
560
void
 
561
mwifiex_insert_cmd_to_pending_q(struct mwifiex_adapter *adapter,
 
562
                                struct cmd_ctrl_node *cmd_node, u32 add_tail)
 
563
{
 
564
        struct host_cmd_ds_command *host_cmd = NULL;
 
565
        u16 command;
 
566
        unsigned long flags;
 
567
 
 
568
        host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 
569
        if (!host_cmd) {
 
570
                dev_err(adapter->dev, "QUEUE_CMD: host_cmd is NULL\n");
 
571
                return;
 
572
        }
 
573
 
 
574
        command = le16_to_cpu(host_cmd->command);
 
575
 
 
576
        /* Exit_PS command needs to be queued in the header always. */
 
577
        if (command == HostCmd_CMD_802_11_PS_MODE_ENH) {
 
578
                struct host_cmd_ds_802_11_ps_mode_enh *pm =
 
579
                        &host_cmd->params.psmode_enh;
 
580
                if ((le16_to_cpu(pm->action) == DIS_PS)
 
581
                    || (le16_to_cpu(pm->action) == DIS_AUTO_PS)) {
 
582
                        if (adapter->ps_state != PS_STATE_AWAKE)
 
583
                                add_tail = false;
 
584
                }
 
585
        }
 
586
 
 
587
        spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 
588
        if (add_tail)
 
589
                list_add_tail(&cmd_node->list, &adapter->cmd_pending_q);
 
590
        else
 
591
                list_add(&cmd_node->list, &adapter->cmd_pending_q);
 
592
        spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 
593
 
 
594
        dev_dbg(adapter->dev, "cmd: QUEUE_CMD: cmd=%#x is queued\n", command);
 
595
}
 
596
 
 
597
/*
 
598
 * This function executes the next command in command pending queue.
 
599
 *
 
600
 * This function will fail if a command is already in processing stage,
 
601
 * otherwise it will dequeue the first command from the command pending
 
602
 * queue and send to the firmware.
 
603
 *
 
604
 * If the device is currently in host sleep mode, any commands, except the
 
605
 * host sleep configuration command will de-activate the host sleep. For PS
 
606
 * mode, the function will put the firmware back to sleep if applicable.
 
607
 */
 
608
int mwifiex_exec_next_cmd(struct mwifiex_adapter *adapter)
 
609
{
 
610
        struct mwifiex_private *priv;
 
611
        struct cmd_ctrl_node *cmd_node;
 
612
        int ret = 0;
 
613
        struct host_cmd_ds_command *host_cmd;
 
614
        unsigned long cmd_flags;
 
615
        unsigned long cmd_pending_q_flags;
 
616
 
 
617
        /* Check if already in processing */
 
618
        if (adapter->curr_cmd) {
 
619
                dev_err(adapter->dev, "EXEC_NEXT_CMD: cmd in processing\n");
 
620
                return -1;
 
621
        }
 
622
 
 
623
        spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 
624
        /* Check if any command is pending */
 
625
        spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 
626
        if (list_empty(&adapter->cmd_pending_q)) {
 
627
                spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 
628
                                       cmd_pending_q_flags);
 
629
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 
630
                return 0;
 
631
        }
 
632
        cmd_node = list_first_entry(&adapter->cmd_pending_q,
 
633
                                    struct cmd_ctrl_node, list);
 
634
        spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 
635
                               cmd_pending_q_flags);
 
636
 
 
637
        host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 
638
        priv = cmd_node->priv;
 
639
 
 
640
        if (adapter->ps_state != PS_STATE_AWAKE) {
 
641
                dev_err(adapter->dev, "%s: cannot send cmd in sleep state,"
 
642
                                " this should not happen\n", __func__);
 
643
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 
644
                return ret;
 
645
        }
 
646
 
 
647
        spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 
648
        list_del(&cmd_node->list);
 
649
        spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 
650
                               cmd_pending_q_flags);
 
651
 
 
652
        spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 
653
        ret = mwifiex_dnld_cmd_to_fw(priv, cmd_node);
 
654
        priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
655
        /* Any command sent to the firmware when host is in sleep
 
656
         * mode should de-configure host sleep. We should skip the
 
657
         * host sleep configuration command itself though
 
658
         */
 
659
        if (priv && (host_cmd->command !=
 
660
             cpu_to_le16(HostCmd_CMD_802_11_HS_CFG_ENH))) {
 
661
                if (adapter->hs_activated) {
 
662
                        adapter->is_hs_configured = false;
 
663
                        mwifiex_hs_activated_event(priv, false);
 
664
                }
 
665
        }
 
666
 
 
667
        return ret;
 
668
}
 
669
 
 
670
/*
 
671
 * This function handles the command response.
 
672
 *
 
673
 * After processing, the function cleans the command node and puts
 
674
 * it back to the command free queue.
 
675
 */
 
676
int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter)
 
677
{
 
678
        struct host_cmd_ds_command *resp;
 
679
        struct mwifiex_private *priv =
 
680
                mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
681
        int ret = 0;
 
682
        uint16_t orig_cmdresp_no;
 
683
        uint16_t cmdresp_no;
 
684
        uint16_t cmdresp_result;
 
685
        struct timeval tstamp;
 
686
        unsigned long flags;
 
687
 
 
688
        /* Now we got response from FW, cancel the command timer */
 
689
        del_timer(&adapter->cmd_timer);
 
690
 
 
691
        if (!adapter->curr_cmd || !adapter->curr_cmd->resp_skb) {
 
692
                resp = (struct host_cmd_ds_command *) adapter->upld_buf;
 
693
                dev_err(adapter->dev, "CMD_RESP: NULL curr_cmd, %#x\n",
 
694
                       le16_to_cpu(resp->command));
 
695
                return -1;
 
696
        }
 
697
 
 
698
        adapter->num_cmd_timeout = 0;
 
699
 
 
700
        resp = (struct host_cmd_ds_command *) adapter->curr_cmd->resp_skb->data;
 
701
        if (adapter->curr_cmd->cmd_flag & CMD_F_CANCELED) {
 
702
                dev_err(adapter->dev, "CMD_RESP: %#x been canceled\n",
 
703
                                le16_to_cpu(resp->command));
 
704
                mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
 
705
                spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 
706
                adapter->curr_cmd = NULL;
 
707
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 
708
                return -1;
 
709
        }
 
710
 
 
711
        if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 
712
                /* Copy original response back to response buffer */
 
713
                struct mwifiex_ds_misc_cmd *hostcmd;
 
714
                uint16_t size = le16_to_cpu(resp->size);
 
715
                dev_dbg(adapter->dev, "info: host cmd resp size = %d\n", size);
 
716
                size = min_t(u16, size, MWIFIEX_SIZE_OF_CMD_BUFFER);
 
717
                if (adapter->curr_cmd->data_buf) {
 
718
                        hostcmd = adapter->curr_cmd->data_buf;
 
719
                        hostcmd->len = size;
 
720
                        memcpy(hostcmd->cmd, resp, size);
 
721
                }
 
722
        }
 
723
        orig_cmdresp_no = le16_to_cpu(resp->command);
 
724
 
 
725
        /* Get BSS number and corresponding priv */
 
726
        priv = mwifiex_get_priv_by_id(adapter,
 
727
                        HostCmd_GET_BSS_NO(le16_to_cpu(resp->seq_num)),
 
728
                        HostCmd_GET_BSS_TYPE(le16_to_cpu(resp->seq_num)));
 
729
        if (!priv)
 
730
                priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
731
        /* Clear RET_BIT from HostCmd */
 
732
        resp->command = cpu_to_le16(orig_cmdresp_no & HostCmd_CMD_ID_MASK);
 
733
 
 
734
        cmdresp_no = le16_to_cpu(resp->command);
 
735
        cmdresp_result = le16_to_cpu(resp->result);
 
736
 
 
737
        /* Save the last command response to debug log */
 
738
        adapter->dbg.last_cmd_resp_index =
 
739
                (adapter->dbg.last_cmd_resp_index + 1) % DBG_CMD_NUM;
 
740
        adapter->dbg.last_cmd_resp_id[adapter->dbg.last_cmd_resp_index] =
 
741
                orig_cmdresp_no;
 
742
 
 
743
        do_gettimeofday(&tstamp);
 
744
        dev_dbg(adapter->dev, "cmd: CMD_RESP: (%lu.%lu): 0x%x, result %d,"
 
745
                " len %d, seqno 0x%x\n",
 
746
               tstamp.tv_sec, tstamp.tv_usec, orig_cmdresp_no, cmdresp_result,
 
747
               le16_to_cpu(resp->size), le16_to_cpu(resp->seq_num));
 
748
 
 
749
        if (!(orig_cmdresp_no & HostCmd_RET_BIT)) {
 
750
                dev_err(adapter->dev, "CMD_RESP: invalid cmd resp\n");
 
751
                if (adapter->curr_cmd->wait_q_enabled)
 
752
                        adapter->cmd_wait_q.status = -1;
 
753
 
 
754
                mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
 
755
                spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 
756
                adapter->curr_cmd = NULL;
 
757
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 
758
                return -1;
 
759
        }
 
760
 
 
761
        if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 
762
                adapter->curr_cmd->cmd_flag &= ~CMD_F_HOSTCMD;
 
763
                if ((cmdresp_result == HostCmd_RESULT_OK)
 
764
                    && (cmdresp_no == HostCmd_CMD_802_11_HS_CFG_ENH))
 
765
                        ret = mwifiex_ret_802_11_hs_cfg(priv, resp);
 
766
        } else {
 
767
                /* handle response */
 
768
                ret = mwifiex_process_sta_cmdresp(priv, cmdresp_no, resp);
 
769
        }
 
770
 
 
771
        /* Check init command response */
 
772
        if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) {
 
773
                if (ret == -1) {
 
774
                        dev_err(adapter->dev, "%s: cmd %#x failed during "
 
775
                                "initialization\n", __func__, cmdresp_no);
 
776
                        mwifiex_init_fw_complete(adapter);
 
777
                        return -1;
 
778
                } else if (adapter->last_init_cmd == cmdresp_no)
 
779
                        adapter->hw_status = MWIFIEX_HW_STATUS_INIT_DONE;
 
780
        }
 
781
 
 
782
        if (adapter->curr_cmd) {
 
783
                if (adapter->curr_cmd->wait_q_enabled && (!ret))
 
784
                        adapter->cmd_wait_q.status = 0;
 
785
                else if (adapter->curr_cmd->wait_q_enabled && (ret == -1))
 
786
                        adapter->cmd_wait_q.status = -1;
 
787
 
 
788
                /* Clean up and put current command back to cmd_free_q */
 
789
                mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
 
790
 
 
791
                spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 
792
                adapter->curr_cmd = NULL;
 
793
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 
794
        }
 
795
 
 
796
        return ret;
 
797
}
 
798
 
 
799
/*
 
800
 * This function handles the timeout of command sending.
 
801
 *
 
802
 * It will re-send the same command again.
 
803
 */
 
804
void
 
805
mwifiex_cmd_timeout_func(unsigned long function_context)
 
806
{
 
807
        struct mwifiex_adapter *adapter =
 
808
                (struct mwifiex_adapter *) function_context;
 
809
        struct cmd_ctrl_node *cmd_node;
 
810
        struct timeval tstamp;
 
811
 
 
812
        adapter->num_cmd_timeout++;
 
813
        adapter->dbg.num_cmd_timeout++;
 
814
        if (!adapter->curr_cmd) {
 
815
                dev_dbg(adapter->dev, "cmd: empty curr_cmd\n");
 
816
                return;
 
817
        }
 
818
        cmd_node = adapter->curr_cmd;
 
819
        if (cmd_node->wait_q_enabled)
 
820
                adapter->cmd_wait_q.status = -ETIMEDOUT;
 
821
 
 
822
        if (cmd_node) {
 
823
                adapter->dbg.timeout_cmd_id =
 
824
                        adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index];
 
825
                adapter->dbg.timeout_cmd_act =
 
826
                        adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index];
 
827
                do_gettimeofday(&tstamp);
 
828
                dev_err(adapter->dev, "%s: Timeout cmd id (%lu.%lu) = %#x,"
 
829
                        " act = %#x\n", __func__,
 
830
                       tstamp.tv_sec, tstamp.tv_usec,
 
831
                       adapter->dbg.timeout_cmd_id,
 
832
                       adapter->dbg.timeout_cmd_act);
 
833
 
 
834
                dev_err(adapter->dev, "num_data_h2c_failure = %d\n",
 
835
                       adapter->dbg.num_tx_host_to_card_failure);
 
836
                dev_err(adapter->dev, "num_cmd_h2c_failure = %d\n",
 
837
                       adapter->dbg.num_cmd_host_to_card_failure);
 
838
 
 
839
                dev_err(adapter->dev, "num_cmd_timeout = %d\n",
 
840
                       adapter->dbg.num_cmd_timeout);
 
841
                dev_err(adapter->dev, "num_tx_timeout = %d\n",
 
842
                       adapter->dbg.num_tx_timeout);
 
843
 
 
844
                dev_err(adapter->dev, "last_cmd_index = %d\n",
 
845
                       adapter->dbg.last_cmd_index);
 
846
                print_hex_dump_bytes("last_cmd_id: ", DUMP_PREFIX_OFFSET,
 
847
                                adapter->dbg.last_cmd_id, DBG_CMD_NUM);
 
848
                print_hex_dump_bytes("last_cmd_act: ", DUMP_PREFIX_OFFSET,
 
849
                                adapter->dbg.last_cmd_act, DBG_CMD_NUM);
 
850
 
 
851
                dev_err(adapter->dev, "last_cmd_resp_index = %d\n",
 
852
                       adapter->dbg.last_cmd_resp_index);
 
853
                print_hex_dump_bytes("last_cmd_resp_id: ", DUMP_PREFIX_OFFSET,
 
854
                                adapter->dbg.last_cmd_resp_id, DBG_CMD_NUM);
 
855
 
 
856
                dev_err(adapter->dev, "last_event_index = %d\n",
 
857
                       adapter->dbg.last_event_index);
 
858
                print_hex_dump_bytes("last_event: ", DUMP_PREFIX_OFFSET,
 
859
                                adapter->dbg.last_event, DBG_CMD_NUM);
 
860
 
 
861
                dev_err(adapter->dev, "data_sent=%d cmd_sent=%d\n",
 
862
                       adapter->data_sent, adapter->cmd_sent);
 
863
 
 
864
                dev_err(adapter->dev, "ps_mode=%d ps_state=%d\n",
 
865
                                adapter->ps_mode, adapter->ps_state);
 
866
        }
 
867
        if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING)
 
868
                mwifiex_init_fw_complete(adapter);
 
869
}
 
870
 
 
871
/*
 
872
 * This function cancels all the pending commands.
 
873
 *
 
874
 * The current command, all commands in command pending queue and all scan
 
875
 * commands in scan pending queue are cancelled. All the completion callbacks
 
876
 * are called with failure status to ensure cleanup.
 
877
 */
 
878
void
 
879
mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter)
 
880
{
 
881
        struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
 
882
        unsigned long flags;
 
883
 
 
884
        /* Cancel current cmd */
 
885
        if ((adapter->curr_cmd) && (adapter->curr_cmd->wait_q_enabled)) {
 
886
                spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 
887
                adapter->curr_cmd->wait_q_enabled = false;
 
888
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 
889
                adapter->cmd_wait_q.status = -1;
 
890
                mwifiex_complete_cmd(adapter, adapter->curr_cmd);
 
891
        }
 
892
        /* Cancel all pending command */
 
893
        spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 
894
        list_for_each_entry_safe(cmd_node, tmp_node,
 
895
                                 &adapter->cmd_pending_q, list) {
 
896
                list_del(&cmd_node->list);
 
897
                spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 
898
 
 
899
                if (cmd_node->wait_q_enabled) {
 
900
                        adapter->cmd_wait_q.status = -1;
 
901
                        mwifiex_complete_cmd(adapter, cmd_node);
 
902
                        cmd_node->wait_q_enabled = false;
 
903
                }
 
904
                mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 
905
                spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 
906
        }
 
907
        spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 
908
 
 
909
        /* Cancel all pending scan command */
 
910
        spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
 
911
        list_for_each_entry_safe(cmd_node, tmp_node,
 
912
                                 &adapter->scan_pending_q, list) {
 
913
                list_del(&cmd_node->list);
 
914
                spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
 
915
 
 
916
                cmd_node->wait_q_enabled = false;
 
917
                mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 
918
                spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
 
919
        }
 
920
        spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
 
921
 
 
922
        spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 
923
        adapter->scan_processing = false;
 
924
        spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 
925
}
 
926
 
 
927
/*
 
928
 * This function cancels all pending commands that matches with
 
929
 * the given IOCTL request.
 
930
 *
 
931
 * Both the current command buffer and the pending command queue are
 
932
 * searched for matching IOCTL request. The completion callback of
 
933
 * the matched command is called with failure status to ensure cleanup.
 
934
 * In case of scan commands, all pending commands in scan pending queue
 
935
 * are cancelled.
 
936
 */
 
937
void
 
938
mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter)
 
939
{
 
940
        struct cmd_ctrl_node *cmd_node = NULL, *tmp_node = NULL;
 
941
        unsigned long cmd_flags;
 
942
        unsigned long scan_pending_q_flags;
 
943
        uint16_t cancel_scan_cmd = false;
 
944
 
 
945
        if ((adapter->curr_cmd) &&
 
946
             (adapter->curr_cmd->wait_q_enabled)) {
 
947
                spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 
948
                cmd_node = adapter->curr_cmd;
 
949
                cmd_node->wait_q_enabled = false;
 
950
                cmd_node->cmd_flag |= CMD_F_CANCELED;
 
951
                mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 
952
                mwifiex_complete_cmd(adapter, adapter->curr_cmd);
 
953
                adapter->curr_cmd = NULL;
 
954
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 
955
        }
 
956
 
 
957
        /* Cancel all pending scan command */
 
958
        spin_lock_irqsave(&adapter->scan_pending_q_lock,
 
959
                          scan_pending_q_flags);
 
960
        list_for_each_entry_safe(cmd_node, tmp_node,
 
961
                                 &adapter->scan_pending_q, list) {
 
962
                list_del(&cmd_node->list);
 
963
                spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
 
964
                                       scan_pending_q_flags);
 
965
                cmd_node->wait_q_enabled = false;
 
966
                mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 
967
                spin_lock_irqsave(&adapter->scan_pending_q_lock,
 
968
                                  scan_pending_q_flags);
 
969
                cancel_scan_cmd = true;
 
970
        }
 
971
        spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
 
972
                               scan_pending_q_flags);
 
973
 
 
974
        if (cancel_scan_cmd) {
 
975
                spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 
976
                adapter->scan_processing = false;
 
977
                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 
978
        }
 
979
        adapter->cmd_wait_q.status = -1;
 
980
}
 
981
 
 
982
/*
 
983
 * This function sends the sleep confirm command to firmware, if
 
984
 * possible.
 
985
 *
 
986
 * The sleep confirm command cannot be issued if command response,
 
987
 * data response or event response is awaiting handling, or if we
 
988
 * are in the middle of sending a command, or expecting a command
 
989
 * response.
 
990
 */
 
991
void
 
992
mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
 
993
{
 
994
        if (!adapter->cmd_sent &&
 
995
            !adapter->curr_cmd && !IS_CARD_RX_RCVD(adapter))
 
996
                mwifiex_dnld_sleep_confirm_cmd(adapter);
 
997
        else
 
998
                dev_dbg(adapter->dev,
 
999
                        "cmd: Delay Sleep Confirm (%s%s%s)\n",
 
1000
                       (adapter->cmd_sent) ? "D" : "",
 
1001
                       (adapter->curr_cmd) ? "C" : "",
 
1002
                       (IS_CARD_RX_RCVD(adapter)) ? "R" : "");
 
1003
}
 
1004
 
 
1005
/*
 
1006
 * This function sends a Host Sleep activated event to applications.
 
1007
 *
 
1008
 * This event is generated by the driver, with a blank event body.
 
1009
 */
 
1010
void
 
1011
mwifiex_hs_activated_event(struct mwifiex_private *priv, u8 activated)
 
1012
{
 
1013
        if (activated) {
 
1014
                if (priv->adapter->is_hs_configured) {
 
1015
                        priv->adapter->hs_activated = true;
 
1016
                        dev_dbg(priv->adapter->dev, "event: hs_activated\n");
 
1017
                        priv->adapter->hs_activate_wait_q_woken = true;
 
1018
                        wake_up_interruptible(
 
1019
                                &priv->adapter->hs_activate_wait_q);
 
1020
                } else {
 
1021
                        dev_dbg(priv->adapter->dev, "event: HS not configured\n");
 
1022
                }
 
1023
        } else {
 
1024
                dev_dbg(priv->adapter->dev, "event: hs_deactivated\n");
 
1025
                priv->adapter->hs_activated = false;
 
1026
        }
 
1027
}
 
1028
 
 
1029
/*
 
1030
 * This function handles the command response of a Host Sleep configuration
 
1031
 * command.
 
1032
 *
 
1033
 * Handling includes changing the header fields into CPU format
 
1034
 * and setting the current host sleep activation status in driver.
 
1035
 *
 
1036
 * In case host sleep status change, the function generates an event to
 
1037
 * notify the applications.
 
1038
 */
 
1039
int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
 
1040
                              struct host_cmd_ds_command *resp)
 
1041
{
 
1042
        struct mwifiex_adapter *adapter = priv->adapter;
 
1043
        struct host_cmd_ds_802_11_hs_cfg_enh *phs_cfg =
 
1044
                &resp->params.opt_hs_cfg;
 
1045
        uint32_t conditions = le32_to_cpu(phs_cfg->params.hs_config.conditions);
 
1046
 
 
1047
        if (phs_cfg->action == cpu_to_le16(HS_ACTIVATE)) {
 
1048
                mwifiex_hs_activated_event(priv, true);
 
1049
                return 0;
 
1050
        } else {
 
1051
                dev_dbg(adapter->dev, "cmd: CMD_RESP: HS_CFG cmd reply"
 
1052
                        " result=%#x, conditions=0x%x gpio=0x%x gap=0x%x\n",
 
1053
                        resp->result, conditions,
 
1054
                       phs_cfg->params.hs_config.gpio,
 
1055
                       phs_cfg->params.hs_config.gap);
 
1056
        }
 
1057
        if (conditions != HOST_SLEEP_CFG_CANCEL) {
 
1058
                adapter->is_hs_configured = true;
 
1059
        } else {
 
1060
                adapter->is_hs_configured = false;
 
1061
                if (adapter->hs_activated)
 
1062
                        mwifiex_hs_activated_event(priv, false);
 
1063
        }
 
1064
 
 
1065
        return 0;
 
1066
}
 
1067
 
 
1068
/*
 
1069
 * This function wakes up the adapter and generates a Host Sleep
 
1070
 * cancel event on receiving the power up interrupt.
 
1071
 */
 
1072
void
 
1073
mwifiex_process_hs_config(struct mwifiex_adapter *adapter)
 
1074
{
 
1075
        dev_dbg(adapter->dev, "info: %s: auto cancelling host sleep"
 
1076
                " since there is interrupt from the firmware\n", __func__);
 
1077
 
 
1078
        adapter->if_ops.wakeup(adapter);
 
1079
        adapter->hs_activated = false;
 
1080
        adapter->is_hs_configured = false;
 
1081
        mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
 
1082
                                   MWIFIEX_BSS_ROLE_ANY), false);
 
1083
}
 
1084
 
 
1085
/*
 
1086
 * This function handles the command response of a sleep confirm command.
 
1087
 *
 
1088
 * The function sets the card state to SLEEP if the response indicates success.
 
1089
 */
 
1090
void
 
1091
mwifiex_process_sleep_confirm_resp(struct mwifiex_adapter *adapter,
 
1092
                                   u8 *pbuf, u32 upld_len)
 
1093
{
 
1094
        struct host_cmd_ds_command *cmd = (struct host_cmd_ds_command *) pbuf;
 
1095
        struct mwifiex_private *priv =
 
1096
                mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
1097
        uint16_t result = le16_to_cpu(cmd->result);
 
1098
        uint16_t command = le16_to_cpu(cmd->command);
 
1099
        uint16_t seq_num = le16_to_cpu(cmd->seq_num);
 
1100
 
 
1101
        if (!upld_len) {
 
1102
                dev_err(adapter->dev, "%s: cmd size is 0\n", __func__);
 
1103
                return;
 
1104
        }
 
1105
 
 
1106
        /* Get BSS number and corresponding priv */
 
1107
        priv = mwifiex_get_priv_by_id(adapter, HostCmd_GET_BSS_NO(seq_num),
 
1108
                                      HostCmd_GET_BSS_TYPE(seq_num));
 
1109
        if (!priv)
 
1110
                priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
1111
 
 
1112
        /* Update sequence number */
 
1113
        seq_num = HostCmd_GET_SEQ_NO(seq_num);
 
1114
        /* Clear RET_BIT from HostCmd */
 
1115
        command &= HostCmd_CMD_ID_MASK;
 
1116
 
 
1117
        if (command != HostCmd_CMD_802_11_PS_MODE_ENH) {
 
1118
                dev_err(adapter->dev, "%s: received unexpected response for"
 
1119
                        " cmd %x, result = %x\n", __func__, command, result);
 
1120
                return;
 
1121
        }
 
1122
 
 
1123
        if (result) {
 
1124
                dev_err(adapter->dev, "%s: sleep confirm cmd failed\n",
 
1125
                                                __func__);
 
1126
                adapter->pm_wakeup_card_req = false;
 
1127
                adapter->ps_state = PS_STATE_AWAKE;
 
1128
                return;
 
1129
        }
 
1130
        adapter->pm_wakeup_card_req = true;
 
1131
        if (adapter->is_hs_configured)
 
1132
                mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
 
1133
                                           MWIFIEX_BSS_ROLE_ANY), true);
 
1134
        adapter->ps_state = PS_STATE_SLEEP;
 
1135
        cmd->command = cpu_to_le16(command);
 
1136
        cmd->seq_num = cpu_to_le16(seq_num);
 
1137
}
 
1138
EXPORT_SYMBOL_GPL(mwifiex_process_sleep_confirm_resp);
 
1139
 
 
1140
/*
 
1141
 * This function prepares an enhanced power mode command.
 
1142
 *
 
1143
 * This function can be used to disable power save or to configure
 
1144
 * power save with auto PS or STA PS or auto deep sleep.
 
1145
 *
 
1146
 * Preparation includes -
 
1147
 *      - Setting command ID, action and proper size
 
1148
 *      - Setting Power Save bitmap, PS parameters TLV, PS mode TLV,
 
1149
 *        auto deep sleep TLV (as required)
 
1150
 *      - Ensuring correct endian-ness
 
1151
 */
 
1152
int mwifiex_cmd_enh_power_mode(struct mwifiex_private *priv,
 
1153
                               struct host_cmd_ds_command *cmd,
 
1154
                               u16 cmd_action, uint16_t ps_bitmap,
 
1155
                               struct mwifiex_ds_auto_ds *auto_ds)
 
1156
{
 
1157
        struct host_cmd_ds_802_11_ps_mode_enh *psmode_enh =
 
1158
                &cmd->params.psmode_enh;
 
1159
        u8 *tlv;
 
1160
        u16 cmd_size = 0;
 
1161
 
 
1162
        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
 
1163
        if (cmd_action == DIS_AUTO_PS) {
 
1164
                psmode_enh->action = cpu_to_le16(DIS_AUTO_PS);
 
1165
                psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
 
1166
                cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
 
1167
                                sizeof(psmode_enh->params.ps_bitmap));
 
1168
        } else if (cmd_action == GET_PS) {
 
1169
                psmode_enh->action = cpu_to_le16(GET_PS);
 
1170
                psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
 
1171
                cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
 
1172
                                sizeof(psmode_enh->params.ps_bitmap));
 
1173
        } else if (cmd_action == EN_AUTO_PS) {
 
1174
                psmode_enh->action = cpu_to_le16(EN_AUTO_PS);
 
1175
                psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
 
1176
                cmd_size = S_DS_GEN + sizeof(psmode_enh->action) +
 
1177
                                sizeof(psmode_enh->params.ps_bitmap);
 
1178
                tlv = (u8 *) cmd + cmd_size;
 
1179
                if (ps_bitmap & BITMAP_STA_PS) {
 
1180
                        struct mwifiex_adapter *adapter = priv->adapter;
 
1181
                        struct mwifiex_ie_types_ps_param *ps_tlv =
 
1182
                                (struct mwifiex_ie_types_ps_param *) tlv;
 
1183
                        struct mwifiex_ps_param *ps_mode = &ps_tlv->param;
 
1184
                        ps_tlv->header.type = cpu_to_le16(TLV_TYPE_PS_PARAM);
 
1185
                        ps_tlv->header.len = cpu_to_le16(sizeof(*ps_tlv) -
 
1186
                                        sizeof(struct mwifiex_ie_types_header));
 
1187
                        cmd_size += sizeof(*ps_tlv);
 
1188
                        tlv += sizeof(*ps_tlv);
 
1189
                        dev_dbg(adapter->dev, "cmd: PS Command: Enter PS\n");
 
1190
                        ps_mode->null_pkt_interval =
 
1191
                                cpu_to_le16(adapter->null_pkt_interval);
 
1192
                        ps_mode->multiple_dtims =
 
1193
                                cpu_to_le16(adapter->multiple_dtim);
 
1194
                        ps_mode->bcn_miss_timeout =
 
1195
                                cpu_to_le16(adapter->bcn_miss_time_out);
 
1196
                        ps_mode->local_listen_interval =
 
1197
                                cpu_to_le16(adapter->local_listen_interval);
 
1198
                        ps_mode->adhoc_wake_period =
 
1199
                                cpu_to_le16(adapter->adhoc_awake_period);
 
1200
                        ps_mode->delay_to_ps =
 
1201
                                cpu_to_le16(adapter->delay_to_ps);
 
1202
                        ps_mode->mode =
 
1203
                                cpu_to_le16(adapter->enhanced_ps_mode);
 
1204
 
 
1205
                }
 
1206
                if (ps_bitmap & BITMAP_AUTO_DS) {
 
1207
                        struct mwifiex_ie_types_auto_ds_param *auto_ds_tlv =
 
1208
                                (struct mwifiex_ie_types_auto_ds_param *) tlv;
 
1209
                        u16 idletime = 0;
 
1210
 
 
1211
                        auto_ds_tlv->header.type =
 
1212
                                cpu_to_le16(TLV_TYPE_AUTO_DS_PARAM);
 
1213
                        auto_ds_tlv->header.len =
 
1214
                                cpu_to_le16(sizeof(*auto_ds_tlv) -
 
1215
                                        sizeof(struct mwifiex_ie_types_header));
 
1216
                        cmd_size += sizeof(*auto_ds_tlv);
 
1217
                        tlv += sizeof(*auto_ds_tlv);
 
1218
                        if (auto_ds)
 
1219
                                idletime = auto_ds->idle_time;
 
1220
                        dev_dbg(priv->adapter->dev,
 
1221
                                        "cmd: PS Command: Enter Auto Deep Sleep\n");
 
1222
                        auto_ds_tlv->deep_sleep_timeout = cpu_to_le16(idletime);
 
1223
                }
 
1224
                cmd->size = cpu_to_le16(cmd_size);
 
1225
        }
 
1226
        return 0;
 
1227
}
 
1228
 
 
1229
/*
 
1230
 * This function handles the command response of an enhanced power mode
 
1231
 * command.
 
1232
 *
 
1233
 * Handling includes changing the header fields into CPU format
 
1234
 * and setting the current enhanced power mode in driver.
 
1235
 */
 
1236
int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv,
 
1237
                               struct host_cmd_ds_command *resp,
 
1238
                               struct mwifiex_ds_pm_cfg *pm_cfg)
 
1239
{
 
1240
        struct mwifiex_adapter *adapter = priv->adapter;
 
1241
        struct host_cmd_ds_802_11_ps_mode_enh *ps_mode =
 
1242
                &resp->params.psmode_enh;
 
1243
        uint16_t action = le16_to_cpu(ps_mode->action);
 
1244
        uint16_t ps_bitmap = le16_to_cpu(ps_mode->params.ps_bitmap);
 
1245
        uint16_t auto_ps_bitmap =
 
1246
                le16_to_cpu(ps_mode->params.ps_bitmap);
 
1247
 
 
1248
        dev_dbg(adapter->dev, "info: %s: PS_MODE cmd reply result=%#x action=%#X\n",
 
1249
                                        __func__, resp->result, action);
 
1250
        if (action == EN_AUTO_PS) {
 
1251
                if (auto_ps_bitmap & BITMAP_AUTO_DS) {
 
1252
                        dev_dbg(adapter->dev, "cmd: Enabled auto deep sleep\n");
 
1253
                        priv->adapter->is_deep_sleep = true;
 
1254
                }
 
1255
                if (auto_ps_bitmap & BITMAP_STA_PS) {
 
1256
                        dev_dbg(adapter->dev, "cmd: Enabled STA power save\n");
 
1257
                        if (adapter->sleep_period.period)
 
1258
                                dev_dbg(adapter->dev, "cmd: set to uapsd/pps mode\n");
 
1259
                }
 
1260
        } else if (action == DIS_AUTO_PS) {
 
1261
                if (ps_bitmap & BITMAP_AUTO_DS) {
 
1262
                        priv->adapter->is_deep_sleep = false;
 
1263
                        dev_dbg(adapter->dev, "cmd: Disabled auto deep sleep\n");
 
1264
                }
 
1265
                if (ps_bitmap & BITMAP_STA_PS) {
 
1266
                        dev_dbg(adapter->dev, "cmd: Disabled STA power save\n");
 
1267
                        if (adapter->sleep_period.period) {
 
1268
                                adapter->delay_null_pkt = false;
 
1269
                                adapter->tx_lock_flag = false;
 
1270
                                adapter->pps_uapsd_mode = false;
 
1271
                        }
 
1272
                }
 
1273
        } else if (action == GET_PS) {
 
1274
                if (ps_bitmap & BITMAP_STA_PS)
 
1275
                        adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 
1276
                else
 
1277
                        adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 
1278
 
 
1279
                dev_dbg(adapter->dev, "cmd: ps_bitmap=%#x\n", ps_bitmap);
 
1280
 
 
1281
                if (pm_cfg) {
 
1282
                        /* This section is for get power save mode */
 
1283
                        if (ps_bitmap & BITMAP_STA_PS)
 
1284
                                pm_cfg->param.ps_mode = 1;
 
1285
                        else
 
1286
                                pm_cfg->param.ps_mode = 0;
 
1287
                }
 
1288
        }
 
1289
        return 0;
 
1290
}
 
1291
 
 
1292
/*
 
1293
 * This function prepares command to get hardware specifications.
 
1294
 *
 
1295
 * Preparation includes -
 
1296
 *      - Setting command ID, action and proper size
 
1297
 *      - Setting permanent address parameter
 
1298
 *      - Ensuring correct endian-ness
 
1299
 */
 
1300
int mwifiex_cmd_get_hw_spec(struct mwifiex_private *priv,
 
1301
                            struct host_cmd_ds_command *cmd)
 
1302
{
 
1303
        struct host_cmd_ds_get_hw_spec *hw_spec = &cmd->params.hw_spec;
 
1304
 
 
1305
        cmd->command = cpu_to_le16(HostCmd_CMD_GET_HW_SPEC);
 
1306
        cmd->size =
 
1307
                cpu_to_le16(sizeof(struct host_cmd_ds_get_hw_spec) + S_DS_GEN);
 
1308
        memcpy(hw_spec->permanent_addr, priv->curr_addr, ETH_ALEN);
 
1309
 
 
1310
        return 0;
 
1311
}
 
1312
 
 
1313
/*
 
1314
 * This function handles the command response of get hardware
 
1315
 * specifications.
 
1316
 *
 
1317
 * Handling includes changing the header fields into CPU format
 
1318
 * and saving/updating the following parameters in driver -
 
1319
 *      - Firmware capability information
 
1320
 *      - Firmware band settings
 
1321
 *      - Ad-hoc start band and channel
 
1322
 *      - Ad-hoc 11n activation status
 
1323
 *      - Firmware release number
 
1324
 *      - Number of antennas
 
1325
 *      - Hardware address
 
1326
 *      - Hardware interface version
 
1327
 *      - Firmware version
 
1328
 *      - Region code
 
1329
 *      - 11n capabilities
 
1330
 *      - MCS support fields
 
1331
 *      - MP end port
 
1332
 */
 
1333
int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
 
1334
                            struct host_cmd_ds_command *resp)
 
1335
{
 
1336
        struct host_cmd_ds_get_hw_spec *hw_spec = &resp->params.hw_spec;
 
1337
        struct mwifiex_adapter *adapter = priv->adapter;
 
1338
        int i;
 
1339
 
 
1340
        adapter->fw_cap_info = le32_to_cpu(hw_spec->fw_cap_info);
 
1341
 
 
1342
        if (IS_SUPPORT_MULTI_BANDS(adapter))
 
1343
                adapter->fw_bands = (u8) GET_FW_DEFAULT_BANDS(adapter);
 
1344
        else
 
1345
                adapter->fw_bands = BAND_B;
 
1346
 
 
1347
        adapter->config_bands = adapter->fw_bands;
 
1348
 
 
1349
        if (adapter->fw_bands & BAND_A) {
 
1350
                if (adapter->fw_bands & BAND_GN) {
 
1351
                        adapter->config_bands |= BAND_AN;
 
1352
                        adapter->fw_bands |= BAND_AN;
 
1353
                }
 
1354
                if (adapter->fw_bands & BAND_AN) {
 
1355
                        adapter->adhoc_start_band = BAND_A | BAND_AN;
 
1356
                        adapter->adhoc_11n_enabled = true;
 
1357
                } else {
 
1358
                        adapter->adhoc_start_band = BAND_A;
 
1359
                }
 
1360
                priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL_A;
 
1361
        } else if (adapter->fw_bands & BAND_GN) {
 
1362
                adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
 
1363
                priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
 
1364
                adapter->adhoc_11n_enabled = true;
 
1365
        } else if (adapter->fw_bands & BAND_G) {
 
1366
                adapter->adhoc_start_band = BAND_G | BAND_B;
 
1367
                priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
 
1368
        } else if (adapter->fw_bands & BAND_B) {
 
1369
                adapter->adhoc_start_band = BAND_B;
 
1370
                priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
 
1371
        }
 
1372
 
 
1373
        adapter->fw_release_number = le32_to_cpu(hw_spec->fw_release_number);
 
1374
        adapter->number_of_antenna = le16_to_cpu(hw_spec->number_of_antenna);
 
1375
 
 
1376
        dev_dbg(adapter->dev, "info: GET_HW_SPEC: fw_release_number- %#x\n",
 
1377
               adapter->fw_release_number);
 
1378
        dev_dbg(adapter->dev, "info: GET_HW_SPEC: permanent addr: %pM\n",
 
1379
                                        hw_spec->permanent_addr);
 
1380
        dev_dbg(adapter->dev, "info: GET_HW_SPEC: hw_if_version=%#x  version=%#x\n",
 
1381
                le16_to_cpu(hw_spec->hw_if_version),
 
1382
               le16_to_cpu(hw_spec->version));
 
1383
 
 
1384
        if (priv->curr_addr[0] == 0xff)
 
1385
                memmove(priv->curr_addr, hw_spec->permanent_addr, ETH_ALEN);
 
1386
 
 
1387
        adapter->region_code = le16_to_cpu(hw_spec->region_code);
 
1388
 
 
1389
        for (i = 0; i < MWIFIEX_MAX_REGION_CODE; i++)
 
1390
                /* Use the region code to search for the index */
 
1391
                if (adapter->region_code == region_code_index[i])
 
1392
                        break;
 
1393
 
 
1394
        /* If it's unidentified region code, use the default (USA) */
 
1395
        if (i >= MWIFIEX_MAX_REGION_CODE) {
 
1396
                adapter->region_code = 0x10;
 
1397
                dev_dbg(adapter->dev, "cmd: unknown region code, use default (USA)\n");
 
1398
        }
 
1399
 
 
1400
        adapter->hw_dot_11n_dev_cap = le32_to_cpu(hw_spec->dot_11n_dev_cap);
 
1401
        adapter->hw_dev_mcs_support = hw_spec->dev_mcs_support;
 
1402
 
 
1403
        if (adapter->if_ops.update_mp_end_port)
 
1404
                adapter->if_ops.update_mp_end_port(adapter,
 
1405
                                        le16_to_cpu(hw_spec->mp_end_port));
 
1406
 
 
1407
        return 0;
 
1408
}