Commit | Line | Data |
---|---|---|
5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: major functions | |
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 "main.h" | |
21 | #include "wmm.h" | |
22 | #include "cfg80211.h" | |
23 | #include "11n.h" | |
24 | ||
25 | #define VERSION "1.0" | |
26 | ||
27 | const char driver_version[] = "mwifiex " VERSION " (%s) "; | |
388ec385 AK |
28 | static char *cal_data_cfg; |
29 | module_param(cal_data_cfg, charp, 0); | |
5e6e3a92 | 30 | |
df810083 AK |
31 | static void scan_delay_timer_fn(unsigned long data) |
32 | { | |
33 | struct mwifiex_private *priv = (struct mwifiex_private *)data; | |
34 | struct mwifiex_adapter *adapter = priv->adapter; | |
35 | struct cmd_ctrl_node *cmd_node, *tmp_node; | |
36 | unsigned long flags; | |
37 | ||
38 | if (adapter->surprise_removed) | |
39 | return; | |
40 | ||
41 | if (adapter->scan_delay_cnt == MWIFIEX_MAX_SCAN_DELAY_CNT) { | |
42 | /* | |
43 | * Abort scan operation by cancelling all pending scan | |
44 | * commands | |
45 | */ | |
46 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
47 | list_for_each_entry_safe(cmd_node, tmp_node, | |
48 | &adapter->scan_pending_q, list) { | |
49 | list_del(&cmd_node->list); | |
50 | mwifiex_insert_cmd_to_free_q(adapter, cmd_node); | |
51 | } | |
52 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
53 | ||
54 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
55 | adapter->scan_processing = false; | |
56 | adapter->scan_delay_cnt = 0; | |
57 | adapter->empty_tx_q_cnt = 0; | |
58 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
59 | ||
60 | if (priv->scan_request) { | |
61 | dev_dbg(adapter->dev, "info: aborting scan\n"); | |
62 | cfg80211_scan_done(priv->scan_request, 1); | |
63 | priv->scan_request = NULL; | |
64 | } else { | |
65 | priv->scan_aborting = false; | |
66 | dev_dbg(adapter->dev, "info: scan already aborted\n"); | |
67 | } | |
68 | goto done; | |
69 | } | |
70 | ||
71 | if (!atomic_read(&priv->adapter->is_tx_received)) { | |
72 | adapter->empty_tx_q_cnt++; | |
73 | if (adapter->empty_tx_q_cnt == MWIFIEX_MAX_EMPTY_TX_Q_CNT) { | |
74 | /* | |
75 | * No Tx traffic for 200msec. Get scan command from | |
76 | * scan pending queue and put to cmd pending queue to | |
77 | * resume scan operation | |
78 | */ | |
79 | adapter->scan_delay_cnt = 0; | |
80 | adapter->empty_tx_q_cnt = 0; | |
81 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
82 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
83 | struct cmd_ctrl_node, list); | |
84 | list_del(&cmd_node->list); | |
85 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
86 | flags); | |
87 | ||
88 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, | |
89 | true); | |
90 | queue_work(adapter->workqueue, &adapter->main_work); | |
91 | goto done; | |
92 | } | |
93 | } else { | |
94 | adapter->empty_tx_q_cnt = 0; | |
95 | } | |
96 | ||
97 | /* Delay scan operation further by 20msec */ | |
98 | mod_timer(&priv->scan_delay_timer, jiffies + | |
99 | msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC)); | |
100 | adapter->scan_delay_cnt++; | |
101 | ||
102 | done: | |
103 | if (atomic_read(&priv->adapter->is_tx_received)) | |
104 | atomic_set(&priv->adapter->is_tx_received, false); | |
105 | ||
106 | return; | |
107 | } | |
108 | ||
5e6e3a92 BZ |
109 | /* |
110 | * This function registers the device and performs all the necessary | |
111 | * initializations. | |
112 | * | |
113 | * The following initialization operations are performed - | |
114 | * - Allocate adapter structure | |
115 | * - Save interface specific operations table in adapter | |
116 | * - Call interface specific initialization routine | |
117 | * - Allocate private structures | |
118 | * - Set default adapter structure parameters | |
119 | * - Initialize locks | |
120 | * | |
121 | * In case of any errors during inittialization, this function also ensures | |
122 | * proper cleanup before exiting. | |
123 | */ | |
124 | static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops, | |
287546df | 125 | void **padapter) |
5e6e3a92 | 126 | { |
2be7859f AK |
127 | struct mwifiex_adapter *adapter; |
128 | int i; | |
5e6e3a92 BZ |
129 | |
130 | adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL); | |
5e6e3a92 | 131 | if (!adapter) |
b53575ec | 132 | return -ENOMEM; |
5e6e3a92 | 133 | |
287546df | 134 | *padapter = adapter; |
5e6e3a92 BZ |
135 | adapter->card = card; |
136 | ||
137 | /* Save interface specific operations in adapter */ | |
138 | memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops)); | |
139 | ||
140 | /* card specific initialization has been deferred until now .. */ | |
4daffe35 AK |
141 | if (adapter->if_ops.init_if) |
142 | if (adapter->if_ops.init_if(adapter)) | |
143 | goto error; | |
5e6e3a92 BZ |
144 | |
145 | adapter->priv_num = 0; | |
5e6e3a92 | 146 | |
64b05e2f AP |
147 | for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) { |
148 | /* Allocate memory for private structure */ | |
149 | adapter->priv[i] = | |
150 | kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL); | |
151 | if (!adapter->priv[i]) | |
152 | goto error; | |
93a1df48 | 153 | |
64b05e2f | 154 | adapter->priv[i]->adapter = adapter; |
64b05e2f | 155 | adapter->priv_num++; |
df810083 AK |
156 | |
157 | setup_timer(&adapter->priv[i]->scan_delay_timer, | |
158 | scan_delay_timer_fn, | |
159 | (unsigned long)adapter->priv[i]); | |
64b05e2f | 160 | } |
44b815c6 | 161 | mwifiex_init_lock_list(adapter); |
5e6e3a92 BZ |
162 | |
163 | init_timer(&adapter->cmd_timer); | |
164 | adapter->cmd_timer.function = mwifiex_cmd_timeout_func; | |
165 | adapter->cmd_timer.data = (unsigned long) adapter; | |
166 | ||
5e6e3a92 BZ |
167 | return 0; |
168 | ||
169 | error: | |
170 | dev_dbg(adapter->dev, "info: leave mwifiex_register with error\n"); | |
171 | ||
93a1df48 | 172 | for (i = 0; i < adapter->priv_num; i++) |
5e6e3a92 | 173 | kfree(adapter->priv[i]); |
93a1df48 | 174 | |
5e6e3a92 BZ |
175 | kfree(adapter); |
176 | ||
177 | return -1; | |
178 | } | |
179 | ||
180 | /* | |
181 | * This function unregisters the device and performs all the necessary | |
182 | * cleanups. | |
183 | * | |
184 | * The following cleanup operations are performed - | |
185 | * - Free the timers | |
186 | * - Free beacon buffers | |
187 | * - Free private structures | |
188 | * - Free adapter structure | |
189 | */ | |
190 | static int mwifiex_unregister(struct mwifiex_adapter *adapter) | |
191 | { | |
270e58e8 | 192 | s32 i; |
5e6e3a92 BZ |
193 | |
194 | del_timer(&adapter->cmd_timer); | |
195 | ||
196 | /* Free private structures */ | |
197 | for (i = 0; i < adapter->priv_num; i++) { | |
198 | if (adapter->priv[i]) { | |
199 | mwifiex_free_curr_bcn(adapter->priv[i]); | |
200 | kfree(adapter->priv[i]); | |
201 | } | |
202 | } | |
203 | ||
204 | kfree(adapter); | |
205 | return 0; | |
206 | } | |
207 | ||
208 | /* | |
209 | * The main process. | |
210 | * | |
211 | * This function is the main procedure of the driver and handles various driver | |
212 | * operations. It runs in a loop and provides the core functionalities. | |
213 | * | |
214 | * The main responsibilities of this function are - | |
215 | * - Ensure concurrency control | |
216 | * - Handle pending interrupts and call interrupt handlers | |
217 | * - Wake up the card if required | |
218 | * - Handle command responses and call response handlers | |
219 | * - Handle events and call event handlers | |
220 | * - Execute pending commands | |
221 | * - Transmit pending data packets | |
222 | */ | |
223 | int mwifiex_main_process(struct mwifiex_adapter *adapter) | |
224 | { | |
225 | int ret = 0; | |
226 | unsigned long flags; | |
4daffe35 | 227 | struct sk_buff *skb; |
5e6e3a92 BZ |
228 | |
229 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | |
230 | ||
231 | /* Check if already processing */ | |
232 | if (adapter->mwifiex_processing) { | |
233 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
234 | goto exit_main_proc; | |
235 | } else { | |
236 | adapter->mwifiex_processing = true; | |
237 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
238 | } | |
239 | process_start: | |
240 | do { | |
241 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) || | |
242 | (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)) | |
243 | break; | |
244 | ||
245 | /* Handle pending interrupt if any */ | |
246 | if (adapter->int_status) { | |
247 | if (adapter->hs_activated) | |
248 | mwifiex_process_hs_config(adapter); | |
4daffe35 AK |
249 | if (adapter->if_ops.process_int_status) |
250 | adapter->if_ops.process_int_status(adapter); | |
5e6e3a92 BZ |
251 | } |
252 | ||
253 | /* Need to wake up the card ? */ | |
254 | if ((adapter->ps_state == PS_STATE_SLEEP) && | |
255 | (adapter->pm_wakeup_card_req && | |
256 | !adapter->pm_wakeup_fw_try) && | |
f57c1edc YAP |
257 | (is_command_pending(adapter) || |
258 | !mwifiex_wmm_lists_empty(adapter))) { | |
5e6e3a92 BZ |
259 | adapter->pm_wakeup_fw_try = true; |
260 | adapter->if_ops.wakeup(adapter); | |
261 | continue; | |
262 | } | |
4daffe35 | 263 | |
5e6e3a92 BZ |
264 | if (IS_CARD_RX_RCVD(adapter)) { |
265 | adapter->pm_wakeup_fw_try = false; | |
266 | if (adapter->ps_state == PS_STATE_SLEEP) | |
267 | adapter->ps_state = PS_STATE_AWAKE; | |
268 | } else { | |
269 | /* We have tried to wakeup the card already */ | |
270 | if (adapter->pm_wakeup_fw_try) | |
271 | break; | |
272 | if (adapter->ps_state != PS_STATE_AWAKE || | |
273 | adapter->tx_lock_flag) | |
274 | break; | |
275 | ||
f931c770 AK |
276 | if ((adapter->scan_processing && |
277 | !adapter->scan_delay_cnt) || adapter->data_sent || | |
f57c1edc YAP |
278 | mwifiex_wmm_lists_empty(adapter)) { |
279 | if (adapter->cmd_sent || adapter->curr_cmd || | |
280 | (!is_command_pending(adapter))) | |
5e6e3a92 BZ |
281 | break; |
282 | } | |
283 | } | |
284 | ||
4daffe35 AK |
285 | /* Check Rx data for USB */ |
286 | if (adapter->iface_type == MWIFIEX_USB) | |
287 | while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) | |
288 | mwifiex_handle_rx_packet(adapter, skb); | |
289 | ||
5e6e3a92 BZ |
290 | /* Check for Cmd Resp */ |
291 | if (adapter->cmd_resp_received) { | |
292 | adapter->cmd_resp_received = false; | |
293 | mwifiex_process_cmdresp(adapter); | |
294 | ||
295 | /* call mwifiex back when init_fw is done */ | |
296 | if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) { | |
297 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | |
298 | mwifiex_init_fw_complete(adapter); | |
299 | } | |
300 | } | |
301 | ||
302 | /* Check for event */ | |
303 | if (adapter->event_received) { | |
304 | adapter->event_received = false; | |
305 | mwifiex_process_event(adapter); | |
306 | } | |
307 | ||
308 | /* Check if we need to confirm Sleep Request | |
309 | received previously */ | |
310 | if (adapter->ps_state == PS_STATE_PRE_SLEEP) { | |
311 | if (!adapter->cmd_sent && !adapter->curr_cmd) | |
312 | mwifiex_check_ps_cond(adapter); | |
313 | } | |
314 | ||
315 | /* * The ps_state may have been changed during processing of | |
316 | * Sleep Request event. | |
317 | */ | |
f57c1edc YAP |
318 | if ((adapter->ps_state == PS_STATE_SLEEP) || |
319 | (adapter->ps_state == PS_STATE_PRE_SLEEP) || | |
320 | (adapter->ps_state == PS_STATE_SLEEP_CFM) || | |
321 | adapter->tx_lock_flag) | |
5e6e3a92 BZ |
322 | continue; |
323 | ||
324 | if (!adapter->cmd_sent && !adapter->curr_cmd) { | |
325 | if (mwifiex_exec_next_cmd(adapter) == -1) { | |
326 | ret = -1; | |
327 | break; | |
328 | } | |
329 | } | |
330 | ||
3249ba73 AK |
331 | if ((!adapter->scan_processing || adapter->scan_delay_cnt) && |
332 | !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter)) { | |
5e6e3a92 BZ |
333 | mwifiex_wmm_process_tx(adapter); |
334 | if (adapter->hs_activated) { | |
335 | adapter->is_hs_configured = false; | |
336 | mwifiex_hs_activated_event | |
337 | (mwifiex_get_priv | |
338 | (adapter, MWIFIEX_BSS_ROLE_ANY), | |
339 | false); | |
340 | } | |
341 | } | |
342 | ||
343 | if (adapter->delay_null_pkt && !adapter->cmd_sent && | |
f57c1edc YAP |
344 | !adapter->curr_cmd && !is_command_pending(adapter) && |
345 | mwifiex_wmm_lists_empty(adapter)) { | |
5e6e3a92 BZ |
346 | if (!mwifiex_send_null_packet |
347 | (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
348 | MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | | |
349 | MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) { | |
350 | adapter->delay_null_pkt = false; | |
351 | adapter->ps_state = PS_STATE_SLEEP; | |
352 | } | |
353 | break; | |
354 | } | |
355 | } while (true); | |
356 | ||
357 | if ((adapter->int_status) || IS_CARD_RX_RCVD(adapter)) | |
358 | goto process_start; | |
359 | ||
360 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | |
361 | adapter->mwifiex_processing = false; | |
362 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
363 | ||
364 | exit_main_proc: | |
365 | if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) | |
366 | mwifiex_shutdown_drv(adapter); | |
367 | return ret; | |
368 | } | |
601216e1 | 369 | EXPORT_SYMBOL_GPL(mwifiex_main_process); |
5e6e3a92 | 370 | |
5e6e3a92 BZ |
371 | /* |
372 | * This function frees the adapter structure. | |
373 | * | |
374 | * Additionally, this closes the netlink socket, frees the timers | |
375 | * and private structures. | |
376 | */ | |
377 | static void mwifiex_free_adapter(struct mwifiex_adapter *adapter) | |
378 | { | |
379 | if (!adapter) { | |
380 | pr_err("%s: adapter is NULL\n", __func__); | |
381 | return; | |
382 | } | |
383 | ||
384 | mwifiex_unregister(adapter); | |
385 | pr_debug("info: %s: free adapter\n", __func__); | |
386 | } | |
387 | ||
388 | /* | |
59a4cc25 | 389 | * This function gets firmware and initializes it. |
5e6e3a92 BZ |
390 | * |
391 | * The main initialization steps followed are - | |
392 | * - Download the correct firmware to card | |
5e6e3a92 BZ |
393 | * - Issue the init commands to firmware |
394 | */ | |
59a4cc25 | 395 | static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) |
5e6e3a92 | 396 | { |
59a4cc25 AK |
397 | int ret; |
398 | char fmt[64]; | |
399 | struct mwifiex_private *priv; | |
400 | struct mwifiex_adapter *adapter = context; | |
5e6e3a92 BZ |
401 | struct mwifiex_fw_image fw; |
402 | ||
59a4cc25 AK |
403 | if (!firmware) { |
404 | dev_err(adapter->dev, | |
405 | "Failed to get firmware %s\n", adapter->fw_name); | |
5e6e3a92 BZ |
406 | goto done; |
407 | } | |
59a4cc25 AK |
408 | |
409 | memset(&fw, 0, sizeof(struct mwifiex_fw_image)); | |
410 | adapter->firmware = firmware; | |
5e6e3a92 BZ |
411 | fw.fw_buf = (u8 *) adapter->firmware->data; |
412 | fw.fw_len = adapter->firmware->size; | |
413 | ||
4daffe35 AK |
414 | if (adapter->if_ops.dnld_fw) |
415 | ret = adapter->if_ops.dnld_fw(adapter, &fw); | |
416 | else | |
417 | ret = mwifiex_dnld_fw(adapter, &fw); | |
5e6e3a92 BZ |
418 | if (ret == -1) |
419 | goto done; | |
420 | ||
421 | dev_notice(adapter->dev, "WLAN FW is active\n"); | |
422 | ||
388ec385 AK |
423 | if (cal_data_cfg) { |
424 | if ((request_firmware(&adapter->cal_data, cal_data_cfg, | |
425 | adapter->dev)) < 0) | |
426 | dev_err(adapter->dev, | |
427 | "Cal data request_firmware() failed\n"); | |
428 | } | |
429 | ||
232fde06 DD |
430 | /* enable host interrupt after fw dnld is successful */ |
431 | if (adapter->if_ops.enable_int) | |
432 | adapter->if_ops.enable_int(adapter); | |
433 | ||
5e6e3a92 BZ |
434 | adapter->init_wait_q_woken = false; |
435 | ret = mwifiex_init_fw(adapter); | |
436 | if (ret == -1) { | |
437 | goto done; | |
438 | } else if (!ret) { | |
439 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | |
440 | goto done; | |
441 | } | |
442 | /* Wait for mwifiex_init to complete */ | |
443 | wait_event_interruptible(adapter->init_wait_q, | |
444 | adapter->init_wait_q_woken); | |
59a4cc25 | 445 | if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) |
5e6e3a92 | 446 | goto done; |
59a4cc25 | 447 | |
d6bffe8b AP |
448 | priv = adapter->priv[MWIFIEX_BSS_ROLE_STA]; |
449 | if (mwifiex_register_cfg80211(adapter)) { | |
59a4cc25 AK |
450 | dev_err(adapter->dev, "cannot register with cfg80211\n"); |
451 | goto err_init_fw; | |
452 | } | |
453 | ||
454 | rtnl_lock(); | |
455 | /* Create station interface by default */ | |
d6bffe8b | 456 | if (!mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", |
59a4cc25 AK |
457 | NL80211_IFTYPE_STATION, NULL, NULL)) { |
458 | dev_err(adapter->dev, "cannot create default STA interface\n"); | |
459 | goto err_add_intf; | |
5e6e3a92 | 460 | } |
d6bffe8b AP |
461 | |
462 | /* Create AP interface by default */ | |
463 | if (!mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", | |
464 | NL80211_IFTYPE_AP, NULL, NULL)) { | |
465 | dev_err(adapter->dev, "cannot create default AP interface\n"); | |
466 | goto err_add_intf; | |
467 | } | |
197f4a2e SP |
468 | |
469 | /* Create P2P interface by default */ | |
470 | if (!mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", | |
471 | NL80211_IFTYPE_P2P_CLIENT, NULL, NULL)) { | |
472 | dev_err(adapter->dev, "cannot create default P2P interface\n"); | |
473 | goto err_add_intf; | |
474 | } | |
59a4cc25 AK |
475 | rtnl_unlock(); |
476 | ||
477 | mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); | |
478 | dev_notice(adapter->dev, "driver_version = %s\n", fmt); | |
479 | goto done; | |
5e6e3a92 | 480 | |
59a4cc25 | 481 | err_add_intf: |
84efbb84 | 482 | mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev); |
59a4cc25 AK |
483 | rtnl_unlock(); |
484 | err_init_fw: | |
232fde06 DD |
485 | if (adapter->if_ops.disable_int) |
486 | adapter->if_ops.disable_int(adapter); | |
59a4cc25 AK |
487 | pr_debug("info: %s: unregister device\n", __func__); |
488 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 | 489 | done: |
388ec385 AK |
490 | if (adapter->cal_data) { |
491 | release_firmware(adapter->cal_data); | |
492 | adapter->cal_data = NULL; | |
493 | } | |
4fb25c59 | 494 | release_firmware(adapter->firmware); |
59a4cc25 AK |
495 | complete(&adapter->fw_load); |
496 | return; | |
497 | } | |
498 | ||
499 | /* | |
500 | * This function initializes the hardware and gets firmware. | |
501 | */ | |
502 | static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter) | |
503 | { | |
504 | int ret; | |
505 | ||
506 | init_completion(&adapter->fw_load); | |
507 | ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, | |
508 | adapter->dev, GFP_KERNEL, adapter, | |
509 | mwifiex_fw_dpc); | |
510 | if (ret < 0) | |
511 | dev_err(adapter->dev, | |
512 | "request_firmware_nowait() returned error %d\n", ret); | |
5e6e3a92 BZ |
513 | return ret; |
514 | } | |
515 | ||
5e6e3a92 BZ |
516 | /* |
517 | * CFG802.11 network device handler for open. | |
518 | * | |
519 | * Starts the data queue. | |
520 | */ | |
521 | static int | |
522 | mwifiex_open(struct net_device *dev) | |
523 | { | |
bbea3bc4 | 524 | netif_tx_start_all_queues(dev); |
5e6e3a92 BZ |
525 | return 0; |
526 | } | |
527 | ||
528 | /* | |
529 | * CFG802.11 network device handler for close. | |
530 | */ | |
531 | static int | |
532 | mwifiex_close(struct net_device *dev) | |
533 | { | |
f162cac8 AK |
534 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); |
535 | ||
536 | if (priv->scan_request) { | |
537 | dev_dbg(priv->adapter->dev, "aborting scan on ndo_stop\n"); | |
538 | cfg80211_scan_done(priv->scan_request, 1); | |
539 | priv->scan_request = NULL; | |
75ab753d | 540 | priv->scan_aborting = true; |
f162cac8 AK |
541 | } |
542 | ||
5e6e3a92 BZ |
543 | return 0; |
544 | } | |
545 | ||
e39faa73 SP |
546 | /* |
547 | * Add buffer into wmm tx queue and queue work to transmit it. | |
548 | */ | |
549 | int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb) | |
550 | { | |
47411a06 AP |
551 | struct netdev_queue *txq; |
552 | int index = mwifiex_1d_to_wmm_queue[skb->priority]; | |
553 | ||
554 | if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) { | |
555 | txq = netdev_get_tx_queue(priv->netdev, index); | |
556 | if (!netif_tx_queue_stopped(txq)) { | |
557 | netif_tx_stop_queue(txq); | |
558 | dev_dbg(priv->adapter->dev, "stop queue: %d\n", index); | |
559 | } | |
560 | } | |
561 | ||
e39faa73 | 562 | atomic_inc(&priv->adapter->tx_pending); |
47411a06 | 563 | mwifiex_wmm_add_buf_txqueue(priv, skb); |
e39faa73 SP |
564 | |
565 | if (priv->adapter->scan_delay_cnt) | |
566 | atomic_set(&priv->adapter->is_tx_received, true); | |
567 | ||
e39faa73 SP |
568 | queue_work(priv->adapter->workqueue, &priv->adapter->main_work); |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
5e6e3a92 BZ |
573 | /* |
574 | * CFG802.11 network device handler for data transmission. | |
575 | */ | |
576 | static int | |
577 | mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
578 | { | |
579 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
270e58e8 | 580 | struct sk_buff *new_skb; |
5e6e3a92 | 581 | struct mwifiex_txinfo *tx_info; |
47411a06 | 582 | struct timeval tv; |
5e6e3a92 | 583 | |
9da9a3b2 | 584 | dev_dbg(priv->adapter->dev, "data: %lu BSS(%d-%d): Data <= kernel\n", |
f57c1edc | 585 | jiffies, priv->bss_type, priv->bss_num); |
5e6e3a92 BZ |
586 | |
587 | if (priv->adapter->surprise_removed) { | |
b53575ec | 588 | kfree_skb(skb); |
5e6e3a92 BZ |
589 | priv->stats.tx_dropped++; |
590 | return 0; | |
591 | } | |
592 | if (!skb->len || (skb->len > ETH_FRAME_LEN)) { | |
593 | dev_err(priv->adapter->dev, "Tx: bad skb len %d\n", skb->len); | |
b53575ec | 594 | kfree_skb(skb); |
5e6e3a92 BZ |
595 | priv->stats.tx_dropped++; |
596 | return 0; | |
597 | } | |
598 | if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { | |
599 | dev_dbg(priv->adapter->dev, | |
600 | "data: Tx: insufficient skb headroom %d\n", | |
f57c1edc | 601 | skb_headroom(skb)); |
5e6e3a92 BZ |
602 | /* Insufficient skb headroom - allocate a new skb */ |
603 | new_skb = | |
604 | skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); | |
605 | if (unlikely(!new_skb)) { | |
606 | dev_err(priv->adapter->dev, "Tx: cannot alloca new_skb\n"); | |
b53575ec | 607 | kfree_skb(skb); |
5e6e3a92 BZ |
608 | priv->stats.tx_dropped++; |
609 | return 0; | |
610 | } | |
611 | kfree_skb(skb); | |
612 | skb = new_skb; | |
613 | dev_dbg(priv->adapter->dev, "info: new skb headroomd %d\n", | |
f57c1edc | 614 | skb_headroom(skb)); |
5e6e3a92 BZ |
615 | } |
616 | ||
617 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
9da9a3b2 YAP |
618 | tx_info->bss_num = priv->bss_num; |
619 | tx_info->bss_type = priv->bss_type; | |
47411a06 AP |
620 | |
621 | /* Record the current time the packet was queued; used to | |
622 | * determine the amount of time the packet was queued in | |
623 | * the driver before it was sent to the firmware. | |
624 | * The delay is then sent along with the packet to the | |
625 | * firmware for aggregate delay calculation for stats and | |
626 | * MSDU lifetime expiry. | |
627 | */ | |
628 | do_gettimeofday(&tv); | |
629 | skb->tstamp = timeval_to_ktime(tv); | |
5e6e3a92 | 630 | |
e39faa73 | 631 | mwifiex_queue_tx_pkt(priv, skb); |
5e6e3a92 BZ |
632 | |
633 | return 0; | |
634 | } | |
635 | ||
636 | /* | |
637 | * CFG802.11 network device handler for setting MAC address. | |
638 | */ | |
639 | static int | |
640 | mwifiex_set_mac_address(struct net_device *dev, void *addr) | |
641 | { | |
642 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
a5ffddb7 | 643 | struct sockaddr *hw_addr = addr; |
270e58e8 | 644 | int ret; |
5e6e3a92 BZ |
645 | |
646 | memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN); | |
647 | ||
600f5d90 AK |
648 | /* Send request to firmware */ |
649 | ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_MAC_ADDRESS, | |
650 | HostCmd_ACT_GEN_SET, 0, NULL); | |
651 | ||
652 | if (!ret) | |
653 | memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN); | |
654 | else | |
f57c1edc YAP |
655 | dev_err(priv->adapter->dev, |
656 | "set mac address failed: ret=%d\n", ret); | |
600f5d90 | 657 | |
5e6e3a92 BZ |
658 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
659 | ||
600f5d90 | 660 | return ret; |
5e6e3a92 BZ |
661 | } |
662 | ||
663 | /* | |
664 | * CFG802.11 network device handler for setting multicast list. | |
665 | */ | |
666 | static void mwifiex_set_multicast_list(struct net_device *dev) | |
667 | { | |
668 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
600f5d90 AK |
669 | struct mwifiex_multicast_list mcast_list; |
670 | ||
671 | if (dev->flags & IFF_PROMISC) { | |
672 | mcast_list.mode = MWIFIEX_PROMISC_MODE; | |
673 | } else if (dev->flags & IFF_ALLMULTI || | |
674 | netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { | |
675 | mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; | |
676 | } else { | |
677 | mcast_list.mode = MWIFIEX_MULTICAST_MODE; | |
6390d885 DD |
678 | mcast_list.num_multicast_addr = |
679 | mwifiex_copy_mcast_addr(&mcast_list, dev); | |
600f5d90 AK |
680 | } |
681 | mwifiex_request_set_multicast_list(priv, &mcast_list); | |
5e6e3a92 BZ |
682 | } |
683 | ||
684 | /* | |
685 | * CFG802.11 network device handler for transmission timeout. | |
686 | */ | |
687 | static void | |
688 | mwifiex_tx_timeout(struct net_device *dev) | |
689 | { | |
690 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
691 | ||
5e6e3a92 | 692 | priv->num_tx_timeout++; |
8908c7d5 AN |
693 | priv->tx_timeout_cnt++; |
694 | dev_err(priv->adapter->dev, | |
695 | "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n", | |
696 | jiffies, priv->tx_timeout_cnt, priv->bss_type, priv->bss_num); | |
697 | mwifiex_set_trans_start(dev); | |
698 | ||
699 | if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD && | |
700 | priv->adapter->if_ops.card_reset) { | |
701 | dev_err(priv->adapter->dev, | |
702 | "tx_timeout_cnt exceeds threshold. Triggering card reset!\n"); | |
703 | priv->adapter->if_ops.card_reset(priv->adapter); | |
704 | } | |
5e6e3a92 BZ |
705 | } |
706 | ||
707 | /* | |
708 | * CFG802.11 network device handler for statistics retrieval. | |
709 | */ | |
710 | static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) | |
711 | { | |
712 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
713 | ||
714 | return &priv->stats; | |
715 | } | |
716 | ||
47411a06 AP |
717 | static u16 |
718 | mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb) | |
719 | { | |
720 | skb->priority = cfg80211_classify8021d(skb); | |
721 | return mwifiex_1d_to_wmm_queue[skb->priority]; | |
722 | } | |
723 | ||
5e6e3a92 BZ |
724 | /* Network device handlers */ |
725 | static const struct net_device_ops mwifiex_netdev_ops = { | |
726 | .ndo_open = mwifiex_open, | |
727 | .ndo_stop = mwifiex_close, | |
728 | .ndo_start_xmit = mwifiex_hard_start_xmit, | |
729 | .ndo_set_mac_address = mwifiex_set_mac_address, | |
730 | .ndo_tx_timeout = mwifiex_tx_timeout, | |
731 | .ndo_get_stats = mwifiex_get_stats, | |
afc4b13d | 732 | .ndo_set_rx_mode = mwifiex_set_multicast_list, |
47411a06 | 733 | .ndo_select_queue = mwifiex_netdev_select_wmm_queue, |
5e6e3a92 BZ |
734 | }; |
735 | ||
736 | /* | |
737 | * This function initializes the private structure parameters. | |
738 | * | |
739 | * The following wait queues are initialized - | |
740 | * - IOCTL wait queue | |
741 | * - Command wait queue | |
742 | * - Statistics wait queue | |
743 | * | |
744 | * ...and the following default parameters are set - | |
745 | * - Current key index : Set to 0 | |
746 | * - Rate index : Set to auto | |
747 | * - Media connected : Set to disconnected | |
748 | * - Adhoc link sensed : Set to false | |
749 | * - Nick name : Set to null | |
750 | * - Number of Tx timeout : Set to 0 | |
751 | * - Device address : Set to current address | |
752 | * | |
753 | * In addition, the CFG80211 work queue is also created. | |
754 | */ | |
93a1df48 YAP |
755 | void mwifiex_init_priv_params(struct mwifiex_private *priv, |
756 | struct net_device *dev) | |
5e6e3a92 BZ |
757 | { |
758 | dev->netdev_ops = &mwifiex_netdev_ops; | |
f16fdc9d | 759 | dev->destructor = free_netdev; |
5e6e3a92 | 760 | /* Initialize private structure */ |
5e6e3a92 BZ |
761 | priv->current_key_index = 0; |
762 | priv->media_connected = false; | |
763 | memset(&priv->nick_name, 0, sizeof(priv->nick_name)); | |
ede98bfa AP |
764 | memset(priv->mgmt_ie, 0, |
765 | sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX); | |
f31acabe AP |
766 | priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK; |
767 | priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK; | |
768 | priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK; | |
769 | priv->rsn_idx = MWIFIEX_AUTO_IDX_MASK; | |
5e6e3a92 | 770 | priv->num_tx_timeout = 0; |
5e6e3a92 BZ |
771 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
772 | } | |
773 | ||
5e6e3a92 BZ |
774 | /* |
775 | * This function check if command is pending. | |
776 | */ | |
777 | int is_command_pending(struct mwifiex_adapter *adapter) | |
778 | { | |
779 | unsigned long flags; | |
780 | int is_cmd_pend_q_empty; | |
781 | ||
782 | spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); | |
783 | is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); | |
784 | spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); | |
785 | ||
786 | return !is_cmd_pend_q_empty; | |
787 | } | |
788 | ||
5e6e3a92 BZ |
789 | /* |
790 | * This is the main work queue function. | |
791 | * | |
792 | * It handles the main process, which in turn handles the complete | |
793 | * driver operations. | |
794 | */ | |
795 | static void mwifiex_main_work_queue(struct work_struct *work) | |
796 | { | |
797 | struct mwifiex_adapter *adapter = | |
798 | container_of(work, struct mwifiex_adapter, main_work); | |
799 | ||
800 | if (adapter->surprise_removed) | |
801 | return; | |
802 | mwifiex_main_process(adapter); | |
803 | } | |
804 | ||
805 | /* | |
806 | * This function cancels all works in the queue and destroys | |
807 | * the main workqueue. | |
808 | */ | |
809 | static void | |
810 | mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) | |
811 | { | |
812 | flush_workqueue(adapter->workqueue); | |
813 | destroy_workqueue(adapter->workqueue); | |
814 | adapter->workqueue = NULL; | |
815 | } | |
816 | ||
817 | /* | |
818 | * This function adds the card. | |
819 | * | |
820 | * This function follows the following major steps to set up the device - | |
821 | * - Initialize software. This includes probing the card, registering | |
822 | * the interface operations table, and allocating/initializing the | |
823 | * adapter structure | |
824 | * - Set up the netlink socket | |
825 | * - Create and start the main work queue | |
826 | * - Register the device | |
827 | * - Initialize firmware and hardware | |
828 | * - Add logical interfaces | |
829 | */ | |
830 | int | |
831 | mwifiex_add_card(void *card, struct semaphore *sem, | |
d930faee | 832 | struct mwifiex_if_ops *if_ops, u8 iface_type) |
5e6e3a92 | 833 | { |
2be7859f | 834 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
835 | |
836 | if (down_interruptible(sem)) | |
837 | goto exit_sem_err; | |
838 | ||
93a1df48 | 839 | if (mwifiex_register(card, if_ops, (void **)&adapter)) { |
5e6e3a92 BZ |
840 | pr_err("%s: software init failed\n", __func__); |
841 | goto err_init_sw; | |
842 | } | |
843 | ||
d930faee AK |
844 | adapter->iface_type = iface_type; |
845 | ||
5e6e3a92 | 846 | adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; |
5e6e3a92 BZ |
847 | adapter->surprise_removed = false; |
848 | init_waitqueue_head(&adapter->init_wait_q); | |
849 | adapter->is_suspended = false; | |
850 | adapter->hs_activated = false; | |
851 | init_waitqueue_head(&adapter->hs_activate_wait_q); | |
600f5d90 AK |
852 | adapter->cmd_wait_q_required = false; |
853 | init_waitqueue_head(&adapter->cmd_wait_q.wait); | |
600f5d90 | 854 | adapter->cmd_wait_q.status = 0; |
efaaa8b8 | 855 | adapter->scan_wait_q_woken = false; |
5e6e3a92 | 856 | |
5e6e3a92 BZ |
857 | adapter->workqueue = create_workqueue("MWIFIEX_WORK_QUEUE"); |
858 | if (!adapter->workqueue) | |
859 | goto err_kmalloc; | |
860 | ||
861 | INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); | |
862 | ||
863 | /* Register the device. Fill up the private data structure with relevant | |
232fde06 | 864 | information from the card. */ |
5e6e3a92 BZ |
865 | if (adapter->if_ops.register_dev(adapter)) { |
866 | pr_err("%s: failed to register mwifiex device\n", __func__); | |
867 | goto err_registerdev; | |
868 | } | |
869 | ||
5e6e3a92 BZ |
870 | if (mwifiex_init_hw_fw(adapter)) { |
871 | pr_err("%s: firmware init failed\n", __func__); | |
872 | goto err_init_fw; | |
873 | } | |
2be7859f | 874 | |
5e6e3a92 | 875 | up(sem); |
5e6e3a92 BZ |
876 | return 0; |
877 | ||
5e6e3a92 | 878 | err_init_fw: |
5e6e3a92 | 879 | pr_debug("info: %s: unregister device\n", __func__); |
4daffe35 AK |
880 | if (adapter->if_ops.unregister_dev) |
881 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 BZ |
882 | err_registerdev: |
883 | adapter->surprise_removed = true; | |
884 | mwifiex_terminate_workqueue(adapter); | |
885 | err_kmalloc: | |
886 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_FW_READY) || | |
887 | (adapter->hw_status == MWIFIEX_HW_STATUS_READY)) { | |
888 | pr_debug("info: %s: shutdown mwifiex\n", __func__); | |
889 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
890 | |
891 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
892 | wait_event_interruptible(adapter->init_wait_q, |
893 | adapter->init_wait_q_woken); | |
894 | } | |
895 | ||
896 | mwifiex_free_adapter(adapter); | |
897 | ||
898 | err_init_sw: | |
899 | up(sem); | |
900 | ||
901 | exit_sem_err: | |
902 | return -1; | |
903 | } | |
904 | EXPORT_SYMBOL_GPL(mwifiex_add_card); | |
905 | ||
906 | /* | |
907 | * This function removes the card. | |
908 | * | |
909 | * This function follows the following major steps to remove the device - | |
910 | * - Stop data traffic | |
911 | * - Shutdown firmware | |
912 | * - Remove the logical interfaces | |
913 | * - Terminate the work queue | |
914 | * - Unregister the device | |
915 | * - Free the adapter structure | |
916 | */ | |
917 | int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) | |
918 | { | |
919 | struct mwifiex_private *priv = NULL; | |
5e6e3a92 BZ |
920 | int i; |
921 | ||
922 | if (down_interruptible(sem)) | |
923 | goto exit_sem_err; | |
924 | ||
925 | if (!adapter) | |
926 | goto exit_remove; | |
927 | ||
232fde06 DD |
928 | /* We can no longer handle interrupts once we start doing the teardown |
929 | * below. */ | |
930 | if (adapter->if_ops.disable_int) | |
931 | adapter->if_ops.disable_int(adapter); | |
932 | ||
5e6e3a92 BZ |
933 | adapter->surprise_removed = true; |
934 | ||
935 | /* Stop data */ | |
936 | for (i = 0; i < adapter->priv_num; i++) { | |
937 | priv = adapter->priv[i]; | |
93a1df48 | 938 | if (priv && priv->netdev) { |
47411a06 | 939 | mwifiex_stop_net_dev_queue(priv->netdev, adapter); |
5e6e3a92 BZ |
940 | if (netif_carrier_ok(priv->netdev)) |
941 | netif_carrier_off(priv->netdev); | |
942 | } | |
943 | } | |
944 | ||
945 | dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n"); | |
946 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
947 | |
948 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
949 | wait_event_interruptible(adapter->init_wait_q, |
950 | adapter->init_wait_q_woken); | |
951 | dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n"); | |
952 | if (atomic_read(&adapter->rx_pending) || | |
953 | atomic_read(&adapter->tx_pending) || | |
600f5d90 | 954 | atomic_read(&adapter->cmd_pending)) { |
5e6e3a92 | 955 | dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, " |
600f5d90 | 956 | "cmd_pending=%d\n", |
5e6e3a92 BZ |
957 | atomic_read(&adapter->rx_pending), |
958 | atomic_read(&adapter->tx_pending), | |
600f5d90 | 959 | atomic_read(&adapter->cmd_pending)); |
5e6e3a92 BZ |
960 | } |
961 | ||
93a1df48 YAP |
962 | for (i = 0; i < adapter->priv_num; i++) { |
963 | priv = adapter->priv[i]; | |
964 | ||
965 | if (!priv) | |
966 | continue; | |
967 | ||
968 | rtnl_lock(); | |
2da8cbf8 | 969 | if (priv->wdev && priv->netdev) |
84efbb84 | 970 | mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev); |
93a1df48 YAP |
971 | rtnl_unlock(); |
972 | } | |
973 | ||
3d82de0f | 974 | priv = adapter->priv[0]; |
64b05e2f | 975 | if (!priv || !priv->wdev) |
3d82de0f YAP |
976 | goto exit_remove; |
977 | ||
64b05e2f AP |
978 | wiphy_unregister(priv->wdev->wiphy); |
979 | wiphy_free(priv->wdev->wiphy); | |
980 | ||
981 | for (i = 0; i < adapter->priv_num; i++) { | |
982 | priv = adapter->priv[i]; | |
983 | if (priv) | |
984 | kfree(priv->wdev); | |
2da8cbf8 | 985 | } |
5e6e3a92 BZ |
986 | |
987 | mwifiex_terminate_workqueue(adapter); | |
988 | ||
989 | /* Unregister device */ | |
990 | dev_dbg(adapter->dev, "info: unregister device\n"); | |
4daffe35 AK |
991 | if (adapter->if_ops.unregister_dev) |
992 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 BZ |
993 | /* Free adapter structure */ |
994 | dev_dbg(adapter->dev, "info: free adapter\n"); | |
995 | mwifiex_free_adapter(adapter); | |
996 | ||
997 | exit_remove: | |
998 | up(sem); | |
999 | exit_sem_err: | |
1000 | return 0; | |
1001 | } | |
1002 | EXPORT_SYMBOL_GPL(mwifiex_remove_card); | |
1003 | ||
1004 | /* | |
1005 | * This function initializes the module. | |
1006 | * | |
1007 | * The debug FS is also initialized if configured. | |
1008 | */ | |
1009 | static int | |
1010 | mwifiex_init_module(void) | |
1011 | { | |
1012 | #ifdef CONFIG_DEBUG_FS | |
1013 | mwifiex_debugfs_init(); | |
1014 | #endif | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * This function cleans up the module. | |
1020 | * | |
1021 | * The debug FS is removed if available. | |
1022 | */ | |
1023 | static void | |
1024 | mwifiex_cleanup_module(void) | |
1025 | { | |
1026 | #ifdef CONFIG_DEBUG_FS | |
1027 | mwifiex_debugfs_remove(); | |
1028 | #endif | |
1029 | } | |
1030 | ||
1031 | module_init(mwifiex_init_module); | |
1032 | module_exit(mwifiex_cleanup_module); | |
1033 | ||
1034 | MODULE_AUTHOR("Marvell International Ltd."); | |
1035 | MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); | |
1036 | MODULE_VERSION(VERSION); | |
1037 | MODULE_LICENSE("GPL v2"); |