diff options
author | John W. Linville <linville@tuxdriver.com> | 2011-04-12 16:18:44 -0400 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2011-04-12 16:18:44 -0400 |
commit | 252f4bf400df1712408fe83ba199a66a1b57ab1d (patch) | |
tree | e07fa00abdd55b31e22567786c78635f32c6a66c /drivers/net/wireless/mwifiex/main.c | |
parent | 6ba1037c3d871ab70e342631516dbf841c35b086 (diff) | |
parent | b37e3b6d64358604960b35e8ecbb7aed22e0926e (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
drivers/net/wireless/ath/ar9170/main.c
drivers/net/wireless/ath/ar9170/phy.c
drivers/net/wireless/zd1211rw/zd_rf_rf2959.c
Diffstat (limited to 'drivers/net/wireless/mwifiex/main.c')
-rw-r--r-- | drivers/net/wireless/mwifiex/main.c | 1102 |
1 files changed, 1102 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c new file mode 100644 index 00000000000..ed89ca41a90 --- /dev/null +++ b/drivers/net/wireless/mwifiex/main.c | |||
@@ -0,0 +1,1102 @@ | |||
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) "; | ||
28 | |||
29 | struct mwifiex_adapter *g_adapter; | ||
30 | EXPORT_SYMBOL_GPL(g_adapter); | ||
31 | |||
32 | static struct mwifiex_bss_attr mwifiex_bss_sta[] = { | ||
33 | {MWIFIEX_BSS_TYPE_STA, MWIFIEX_DATA_FRAME_TYPE_ETH_II, true, 0, 0}, | ||
34 | }; | ||
35 | |||
36 | static int drv_mode = DRV_MODE_STA; | ||
37 | |||
38 | static char fw_name[32] = DEFAULT_FW_NAME; | ||
39 | |||
40 | /* Supported drv_mode table */ | ||
41 | static struct mwifiex_drv_mode mwifiex_drv_mode_tbl[] = { | ||
42 | { | ||
43 | /* drv_mode */ | ||
44 | .drv_mode = DRV_MODE_STA, | ||
45 | /* intf number */ | ||
46 | .intf_num = ARRAY_SIZE(mwifiex_bss_sta), | ||
47 | /* bss_attr */ | ||
48 | .bss_attr = mwifiex_bss_sta, | ||
49 | } | ||
50 | , | ||
51 | }; | ||
52 | |||
53 | /* | ||
54 | * This function registers the device and performs all the necessary | ||
55 | * initializations. | ||
56 | * | ||
57 | * The following initialization operations are performed - | ||
58 | * - Allocate adapter structure | ||
59 | * - Save interface specific operations table in adapter | ||
60 | * - Call interface specific initialization routine | ||
61 | * - Allocate private structures | ||
62 | * - Set default adapter structure parameters | ||
63 | * - Initialize locks | ||
64 | * | ||
65 | * In case of any errors during inittialization, this function also ensures | ||
66 | * proper cleanup before exiting. | ||
67 | */ | ||
68 | static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops, | ||
69 | struct mwifiex_device *mdevice, void **padapter) | ||
70 | { | ||
71 | int ret = 0; | ||
72 | struct mwifiex_adapter *adapter = NULL; | ||
73 | u8 i = 0; | ||
74 | |||
75 | adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL); | ||
76 | /* Allocate memory for adapter structure */ | ||
77 | if (!adapter) | ||
78 | return -1; | ||
79 | |||
80 | g_adapter = adapter; | ||
81 | adapter->card = card; | ||
82 | |||
83 | /* Save interface specific operations in adapter */ | ||
84 | memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops)); | ||
85 | |||
86 | /* card specific initialization has been deferred until now .. */ | ||
87 | ret = adapter->if_ops.init_if(adapter); | ||
88 | if (ret) | ||
89 | goto error; | ||
90 | |||
91 | adapter->priv_num = 0; | ||
92 | for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) { | ||
93 | adapter->priv[i] = NULL; | ||
94 | |||
95 | if (!mdevice->bss_attr[i].active) | ||
96 | continue; | ||
97 | |||
98 | /* For valid bss_attr, | ||
99 | allocate memory for private structure */ | ||
100 | adapter->priv[i] = kzalloc(sizeof(struct mwifiex_private), | ||
101 | GFP_KERNEL); | ||
102 | if (!adapter->priv[i]) { | ||
103 | dev_err(adapter->dev, "%s: failed to alloc priv[%d]\n", | ||
104 | __func__, i); | ||
105 | goto error; | ||
106 | } | ||
107 | |||
108 | adapter->priv_num++; | ||
109 | memset(adapter->priv[i], 0, | ||
110 | sizeof(struct mwifiex_private)); | ||
111 | adapter->priv[i]->adapter = adapter; | ||
112 | /* Save bss_type, frame_type & bss_priority */ | ||
113 | adapter->priv[i]->bss_type = (u8) mdevice->bss_attr[i].bss_type; | ||
114 | adapter->priv[i]->frame_type = | ||
115 | (u8) mdevice->bss_attr[i].frame_type; | ||
116 | adapter->priv[i]->bss_priority = | ||
117 | (u8) mdevice->bss_attr[i].bss_priority; | ||
118 | if (mdevice->bss_attr[i].bss_type == MWIFIEX_BSS_TYPE_STA) | ||
119 | adapter->priv[i]->bss_role = MWIFIEX_BSS_ROLE_STA; | ||
120 | else if (mdevice->bss_attr[i].bss_type == MWIFIEX_BSS_TYPE_UAP) | ||
121 | adapter->priv[i]->bss_role = MWIFIEX_BSS_ROLE_UAP; | ||
122 | |||
123 | /* Save bss_index & bss_num */ | ||
124 | adapter->priv[i]->bss_index = i; | ||
125 | adapter->priv[i]->bss_num = mdevice->bss_attr[i].bss_num; | ||
126 | } | ||
127 | |||
128 | /* Initialize lock variables */ | ||
129 | if (mwifiex_init_lock_list(adapter)) | ||
130 | goto error; | ||
131 | |||
132 | init_timer(&adapter->cmd_timer); | ||
133 | adapter->cmd_timer.function = mwifiex_cmd_timeout_func; | ||
134 | adapter->cmd_timer.data = (unsigned long) adapter; | ||
135 | |||
136 | /* Return pointer of struct mwifiex_adapter */ | ||
137 | *padapter = adapter; | ||
138 | return 0; | ||
139 | |||
140 | error: | ||
141 | dev_dbg(adapter->dev, "info: leave mwifiex_register with error\n"); | ||
142 | |||
143 | /* Free lock variables */ | ||
144 | mwifiex_free_lock_list(adapter); | ||
145 | for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) | ||
146 | kfree(adapter->priv[i]); | ||
147 | kfree(adapter); | ||
148 | |||
149 | return -1; | ||
150 | } | ||
151 | |||
152 | /* | ||
153 | * This function unregisters the device and performs all the necessary | ||
154 | * cleanups. | ||
155 | * | ||
156 | * The following cleanup operations are performed - | ||
157 | * - Free the timers | ||
158 | * - Free beacon buffers | ||
159 | * - Free private structures | ||
160 | * - Free adapter structure | ||
161 | */ | ||
162 | static int mwifiex_unregister(struct mwifiex_adapter *adapter) | ||
163 | { | ||
164 | s32 i = 0; | ||
165 | |||
166 | del_timer(&adapter->cmd_timer); | ||
167 | |||
168 | /* Free private structures */ | ||
169 | for (i = 0; i < adapter->priv_num; i++) { | ||
170 | if (adapter->priv[i]) { | ||
171 | mwifiex_free_curr_bcn(adapter->priv[i]); | ||
172 | kfree(adapter->priv[i]); | ||
173 | } | ||
174 | } | ||
175 | |||
176 | kfree(adapter); | ||
177 | return 0; | ||
178 | } | ||
179 | |||
180 | /* | ||
181 | * The main process. | ||
182 | * | ||
183 | * This function is the main procedure of the driver and handles various driver | ||
184 | * operations. It runs in a loop and provides the core functionalities. | ||
185 | * | ||
186 | * The main responsibilities of this function are - | ||
187 | * - Ensure concurrency control | ||
188 | * - Handle pending interrupts and call interrupt handlers | ||
189 | * - Wake up the card if required | ||
190 | * - Handle command responses and call response handlers | ||
191 | * - Handle events and call event handlers | ||
192 | * - Execute pending commands | ||
193 | * - Transmit pending data packets | ||
194 | */ | ||
195 | int mwifiex_main_process(struct mwifiex_adapter *adapter) | ||
196 | { | ||
197 | int ret = 0; | ||
198 | unsigned long flags; | ||
199 | |||
200 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | ||
201 | |||
202 | /* Check if already processing */ | ||
203 | if (adapter->mwifiex_processing) { | ||
204 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | ||
205 | goto exit_main_proc; | ||
206 | } else { | ||
207 | adapter->mwifiex_processing = true; | ||
208 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | ||
209 | } | ||
210 | process_start: | ||
211 | do { | ||
212 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) || | ||
213 | (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)) | ||
214 | break; | ||
215 | |||
216 | /* Handle pending interrupt if any */ | ||
217 | if (adapter->int_status) { | ||
218 | if (adapter->hs_activated) | ||
219 | mwifiex_process_hs_config(adapter); | ||
220 | adapter->if_ops.process_int_status(adapter); | ||
221 | } | ||
222 | |||
223 | /* Need to wake up the card ? */ | ||
224 | if ((adapter->ps_state == PS_STATE_SLEEP) && | ||
225 | (adapter->pm_wakeup_card_req && | ||
226 | !adapter->pm_wakeup_fw_try) && | ||
227 | (is_command_pending(adapter) | ||
228 | || !mwifiex_wmm_lists_empty(adapter))) { | ||
229 | adapter->pm_wakeup_fw_try = true; | ||
230 | adapter->if_ops.wakeup(adapter); | ||
231 | continue; | ||
232 | } | ||
233 | if (IS_CARD_RX_RCVD(adapter)) { | ||
234 | adapter->pm_wakeup_fw_try = false; | ||
235 | if (adapter->ps_state == PS_STATE_SLEEP) | ||
236 | adapter->ps_state = PS_STATE_AWAKE; | ||
237 | } else { | ||
238 | /* We have tried to wakeup the card already */ | ||
239 | if (adapter->pm_wakeup_fw_try) | ||
240 | break; | ||
241 | if (adapter->ps_state != PS_STATE_AWAKE || | ||
242 | adapter->tx_lock_flag) | ||
243 | break; | ||
244 | |||
245 | if (adapter->scan_processing || adapter->data_sent | ||
246 | || mwifiex_wmm_lists_empty(adapter)) { | ||
247 | if (adapter->cmd_sent || adapter->curr_cmd | ||
248 | || (!is_command_pending(adapter))) | ||
249 | break; | ||
250 | } | ||
251 | } | ||
252 | |||
253 | /* Check for Cmd Resp */ | ||
254 | if (adapter->cmd_resp_received) { | ||
255 | adapter->cmd_resp_received = false; | ||
256 | mwifiex_process_cmdresp(adapter); | ||
257 | |||
258 | /* call mwifiex back when init_fw is done */ | ||
259 | if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) { | ||
260 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | ||
261 | mwifiex_init_fw_complete(adapter); | ||
262 | } | ||
263 | } | ||
264 | |||
265 | /* Check for event */ | ||
266 | if (adapter->event_received) { | ||
267 | adapter->event_received = false; | ||
268 | mwifiex_process_event(adapter); | ||
269 | } | ||
270 | |||
271 | /* Check if we need to confirm Sleep Request | ||
272 | received previously */ | ||
273 | if (adapter->ps_state == PS_STATE_PRE_SLEEP) { | ||
274 | if (!adapter->cmd_sent && !adapter->curr_cmd) | ||
275 | mwifiex_check_ps_cond(adapter); | ||
276 | } | ||
277 | |||
278 | /* * The ps_state may have been changed during processing of | ||
279 | * Sleep Request event. | ||
280 | */ | ||
281 | if ((adapter->ps_state == PS_STATE_SLEEP) | ||
282 | || (adapter->ps_state == PS_STATE_PRE_SLEEP) | ||
283 | || (adapter->ps_state == PS_STATE_SLEEP_CFM) | ||
284 | || adapter->tx_lock_flag) | ||
285 | continue; | ||
286 | |||
287 | if (!adapter->cmd_sent && !adapter->curr_cmd) { | ||
288 | if (mwifiex_exec_next_cmd(adapter) == -1) { | ||
289 | ret = -1; | ||
290 | break; | ||
291 | } | ||
292 | } | ||
293 | |||
294 | if (!adapter->scan_processing && !adapter->data_sent && | ||
295 | !mwifiex_wmm_lists_empty(adapter)) { | ||
296 | mwifiex_wmm_process_tx(adapter); | ||
297 | if (adapter->hs_activated) { | ||
298 | adapter->is_hs_configured = false; | ||
299 | mwifiex_hs_activated_event | ||
300 | (mwifiex_get_priv | ||
301 | (adapter, MWIFIEX_BSS_ROLE_ANY), | ||
302 | false); | ||
303 | } | ||
304 | } | ||
305 | |||
306 | if (adapter->delay_null_pkt && !adapter->cmd_sent && | ||
307 | !adapter->curr_cmd && !is_command_pending(adapter) | ||
308 | && mwifiex_wmm_lists_empty(adapter)) { | ||
309 | if (!mwifiex_send_null_packet | ||
310 | (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | ||
311 | MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | | ||
312 | MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) { | ||
313 | adapter->delay_null_pkt = false; | ||
314 | adapter->ps_state = PS_STATE_SLEEP; | ||
315 | } | ||
316 | break; | ||
317 | } | ||
318 | } while (true); | ||
319 | |||
320 | if ((adapter->int_status) || IS_CARD_RX_RCVD(adapter)) | ||
321 | goto process_start; | ||
322 | |||
323 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | ||
324 | adapter->mwifiex_processing = false; | ||
325 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | ||
326 | |||
327 | exit_main_proc: | ||
328 | if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) | ||
329 | mwifiex_shutdown_drv(adapter); | ||
330 | return ret; | ||
331 | } | ||
332 | |||
333 | /* | ||
334 | * This function initializes the software. | ||
335 | * | ||
336 | * The main work includes allocating and initializing the adapter structure | ||
337 | * and initializing the private structures. | ||
338 | */ | ||
339 | static int | ||
340 | mwifiex_init_sw(void *card, struct mwifiex_if_ops *if_ops, void **pmwifiex) | ||
341 | { | ||
342 | int i; | ||
343 | struct mwifiex_device device; | ||
344 | struct mwifiex_drv_mode *drv_mode_ptr; | ||
345 | |||
346 | /* find mwifiex_drv_mode entry from mwifiex_drv_mode_tbl */ | ||
347 | drv_mode_ptr = NULL; | ||
348 | for (i = 0; i < ARRAY_SIZE(mwifiex_drv_mode_tbl); i++) { | ||
349 | if (mwifiex_drv_mode_tbl[i].drv_mode == drv_mode) { | ||
350 | drv_mode_ptr = &mwifiex_drv_mode_tbl[i]; | ||
351 | break; | ||
352 | } | ||
353 | } | ||
354 | |||
355 | if (!drv_mode_ptr) { | ||
356 | pr_err("invalid drv_mode=%d\n", drv_mode); | ||
357 | return -1; | ||
358 | } | ||
359 | |||
360 | memset(&device, 0, sizeof(struct mwifiex_device)); | ||
361 | |||
362 | for (i = 0; i < drv_mode_ptr->intf_num; i++) { | ||
363 | device.bss_attr[i].bss_type = | ||
364 | drv_mode_ptr->bss_attr[i].bss_type; | ||
365 | device.bss_attr[i].frame_type = | ||
366 | drv_mode_ptr->bss_attr[i].frame_type; | ||
367 | device.bss_attr[i].active = drv_mode_ptr->bss_attr[i].active; | ||
368 | device.bss_attr[i].bss_priority = | ||
369 | drv_mode_ptr->bss_attr[i].bss_priority; | ||
370 | device.bss_attr[i].bss_num = drv_mode_ptr->bss_attr[i].bss_num; | ||
371 | } | ||
372 | |||
373 | if (mwifiex_register(card, if_ops, &device, pmwifiex)) | ||
374 | return -1; | ||
375 | |||
376 | return 0; | ||
377 | } | ||
378 | |||
379 | /* | ||
380 | * This function frees the adapter structure. | ||
381 | * | ||
382 | * Additionally, this closes the netlink socket, frees the timers | ||
383 | * and private structures. | ||
384 | */ | ||
385 | static void mwifiex_free_adapter(struct mwifiex_adapter *adapter) | ||
386 | { | ||
387 | if (!adapter) { | ||
388 | pr_err("%s: adapter is NULL\n", __func__); | ||
389 | return; | ||
390 | } | ||
391 | |||
392 | mwifiex_unregister(adapter); | ||
393 | pr_debug("info: %s: free adapter\n", __func__); | ||
394 | } | ||
395 | |||
396 | /* | ||
397 | * This function initializes the hardware and firmware. | ||
398 | * | ||
399 | * The main initialization steps followed are - | ||
400 | * - Download the correct firmware to card | ||
401 | * - Allocate and initialize the adapter structure | ||
402 | * - Initialize the private structures | ||
403 | * - Issue the init commands to firmware | ||
404 | */ | ||
405 | static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter) | ||
406 | { | ||
407 | int ret = 0; | ||
408 | int err; | ||
409 | struct mwifiex_fw_image fw; | ||
410 | |||
411 | memset(&fw, 0, sizeof(struct mwifiex_fw_image)); | ||
412 | |||
413 | switch (adapter->revision_id) { | ||
414 | case SD8787_W0: | ||
415 | case SD8787_W1: | ||
416 | strcpy(fw_name, SD8787_W1_FW_NAME); | ||
417 | break; | ||
418 | case SD8787_A0: | ||
419 | case SD8787_A1: | ||
420 | strcpy(fw_name, SD8787_AX_FW_NAME); | ||
421 | break; | ||
422 | default: | ||
423 | break; | ||
424 | } | ||
425 | |||
426 | err = request_firmware(&adapter->firmware, fw_name, adapter->dev); | ||
427 | if (err < 0) { | ||
428 | dev_err(adapter->dev, "request_firmware() returned" | ||
429 | " error code %#x\n", err); | ||
430 | ret = -1; | ||
431 | goto done; | ||
432 | } | ||
433 | fw.fw_buf = (u8 *) adapter->firmware->data; | ||
434 | fw.fw_len = adapter->firmware->size; | ||
435 | |||
436 | ret = mwifiex_dnld_fw(adapter, &fw); | ||
437 | if (ret == -1) | ||
438 | goto done; | ||
439 | |||
440 | dev_notice(adapter->dev, "WLAN FW is active\n"); | ||
441 | |||
442 | adapter->init_wait_q_woken = false; | ||
443 | ret = mwifiex_init_fw(adapter); | ||
444 | if (ret == -1) { | ||
445 | goto done; | ||
446 | } else if (!ret) { | ||
447 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | ||
448 | goto done; | ||
449 | } | ||
450 | /* Wait for mwifiex_init to complete */ | ||
451 | wait_event_interruptible(adapter->init_wait_q, | ||
452 | adapter->init_wait_q_woken); | ||
453 | if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) { | ||
454 | ret = -1; | ||
455 | goto done; | ||
456 | } | ||
457 | ret = 0; | ||
458 | |||
459 | done: | ||
460 | if (adapter->firmware) | ||
461 | release_firmware(adapter->firmware); | ||
462 | if (ret) | ||
463 | ret = -1; | ||
464 | return ret; | ||
465 | } | ||
466 | |||
467 | /* | ||
468 | * This function fills a driver buffer. | ||
469 | * | ||
470 | * The function associates a given SKB with the provided driver buffer | ||
471 | * and also updates some of the SKB parameters, including IP header, | ||
472 | * priority and timestamp. | ||
473 | */ | ||
474 | static void | ||
475 | mwifiex_fill_buffer(struct sk_buff *skb) | ||
476 | { | ||
477 | struct ethhdr *eth = NULL; | ||
478 | struct iphdr *iph; | ||
479 | struct timeval tv; | ||
480 | u8 tid = 0; | ||
481 | |||
482 | eth = (struct ethhdr *) skb->data; | ||
483 | switch (eth->h_proto) { | ||
484 | case __constant_htons(ETH_P_IP): | ||
485 | iph = ip_hdr(skb); | ||
486 | tid = IPTOS_PREC(iph->tos); | ||
487 | pr_debug("data: packet type ETH_P_IP: %04x, tid=%#x prio=%#x\n", | ||
488 | eth->h_proto, tid, skb->priority); | ||
489 | break; | ||
490 | case __constant_htons(ETH_P_ARP): | ||
491 | pr_debug("data: ARP packet: %04x\n", eth->h_proto); | ||
492 | default: | ||
493 | break; | ||
494 | } | ||
495 | /* Offset for TOS field in the IP header */ | ||
496 | #define IPTOS_OFFSET 5 | ||
497 | tid = (tid >> IPTOS_OFFSET); | ||
498 | skb->priority = tid; | ||
499 | /* Record the current time the packet was queued; used to | ||
500 | determine the amount of time the packet was queued in | ||
501 | the driver before it was sent to the firmware. | ||
502 | The delay is then sent along with the packet to the | ||
503 | firmware for aggregate delay calculation for stats and | ||
504 | MSDU lifetime expiry. | ||
505 | */ | ||
506 | do_gettimeofday(&tv); | ||
507 | skb->tstamp = timeval_to_ktime(tv); | ||
508 | return; | ||
509 | } | ||
510 | |||
511 | /* | ||
512 | * CFG802.11 network device handler for open. | ||
513 | * | ||
514 | * Starts the data queue. | ||
515 | */ | ||
516 | static int | ||
517 | mwifiex_open(struct net_device *dev) | ||
518 | { | ||
519 | netif_start_queue(dev); | ||
520 | return 0; | ||
521 | } | ||
522 | |||
523 | /* | ||
524 | * CFG802.11 network device handler for close. | ||
525 | */ | ||
526 | static int | ||
527 | mwifiex_close(struct net_device *dev) | ||
528 | { | ||
529 | return 0; | ||
530 | } | ||
531 | |||
532 | /* | ||
533 | * CFG802.11 network device handler for data transmission. | ||
534 | */ | ||
535 | static int | ||
536 | mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | ||
537 | { | ||
538 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | ||
539 | struct sk_buff *new_skb = NULL; | ||
540 | struct mwifiex_txinfo *tx_info; | ||
541 | |||
542 | dev_dbg(priv->adapter->dev, "data: %lu BSS(%d): Data <= kernel\n", | ||
543 | jiffies, priv->bss_index); | ||
544 | |||
545 | if (priv->adapter->surprise_removed) { | ||
546 | kfree(skb); | ||
547 | priv->stats.tx_dropped++; | ||
548 | return 0; | ||
549 | } | ||
550 | if (!skb->len || (skb->len > ETH_FRAME_LEN)) { | ||
551 | dev_err(priv->adapter->dev, "Tx: bad skb len %d\n", skb->len); | ||
552 | kfree(skb); | ||
553 | priv->stats.tx_dropped++; | ||
554 | return 0; | ||
555 | } | ||
556 | if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { | ||
557 | dev_dbg(priv->adapter->dev, | ||
558 | "data: Tx: insufficient skb headroom %d\n", | ||
559 | skb_headroom(skb)); | ||
560 | /* Insufficient skb headroom - allocate a new skb */ | ||
561 | new_skb = | ||
562 | skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); | ||
563 | if (unlikely(!new_skb)) { | ||
564 | dev_err(priv->adapter->dev, "Tx: cannot alloca new_skb\n"); | ||
565 | kfree(skb); | ||
566 | priv->stats.tx_dropped++; | ||
567 | return 0; | ||
568 | } | ||
569 | kfree_skb(skb); | ||
570 | skb = new_skb; | ||
571 | dev_dbg(priv->adapter->dev, "info: new skb headroomd %d\n", | ||
572 | skb_headroom(skb)); | ||
573 | } | ||
574 | |||
575 | tx_info = MWIFIEX_SKB_TXCB(skb); | ||
576 | tx_info->bss_index = priv->bss_index; | ||
577 | mwifiex_fill_buffer(skb); | ||
578 | |||
579 | mwifiex_wmm_add_buf_txqueue(priv->adapter, skb); | ||
580 | atomic_inc(&priv->adapter->tx_pending); | ||
581 | |||
582 | if (atomic_read(&priv->adapter->tx_pending) >= MAX_TX_PENDING) { | ||
583 | netif_stop_queue(priv->netdev); | ||
584 | dev->trans_start = jiffies; | ||
585 | } | ||
586 | |||
587 | queue_work(priv->adapter->workqueue, &priv->adapter->main_work); | ||
588 | |||
589 | return 0; | ||
590 | } | ||
591 | |||
592 | /* | ||
593 | * CFG802.11 network device handler for setting MAC address. | ||
594 | */ | ||
595 | static int | ||
596 | mwifiex_set_mac_address(struct net_device *dev, void *addr) | ||
597 | { | ||
598 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | ||
599 | struct sockaddr *hw_addr = (struct sockaddr *) addr; | ||
600 | |||
601 | memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN); | ||
602 | |||
603 | if (mwifiex_request_set_mac_address(priv)) { | ||
604 | dev_err(priv->adapter->dev, "set MAC address failed\n"); | ||
605 | return -EFAULT; | ||
606 | } | ||
607 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); | ||
608 | |||
609 | return 0; | ||
610 | } | ||
611 | |||
612 | /* | ||
613 | * CFG802.11 network device handler for setting multicast list. | ||
614 | */ | ||
615 | static void mwifiex_set_multicast_list(struct net_device *dev) | ||
616 | { | ||
617 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | ||
618 | mwifiex_request_set_multicast_list(priv, dev); | ||
619 | } | ||
620 | |||
621 | /* | ||
622 | * CFG802.11 network device handler for transmission timeout. | ||
623 | */ | ||
624 | static void | ||
625 | mwifiex_tx_timeout(struct net_device *dev) | ||
626 | { | ||
627 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | ||
628 | |||
629 | dev_err(priv->adapter->dev, "%lu : Tx timeout, bss_index=%d\n", | ||
630 | jiffies, priv->bss_index); | ||
631 | dev->trans_start = jiffies; | ||
632 | priv->num_tx_timeout++; | ||
633 | } | ||
634 | |||
635 | /* | ||
636 | * CFG802.11 network device handler for statistics retrieval. | ||
637 | */ | ||
638 | static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) | ||
639 | { | ||
640 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | ||
641 | |||
642 | return &priv->stats; | ||
643 | } | ||
644 | |||
645 | /* Network device handlers */ | ||
646 | static const struct net_device_ops mwifiex_netdev_ops = { | ||
647 | .ndo_open = mwifiex_open, | ||
648 | .ndo_stop = mwifiex_close, | ||
649 | .ndo_start_xmit = mwifiex_hard_start_xmit, | ||
650 | .ndo_set_mac_address = mwifiex_set_mac_address, | ||
651 | .ndo_tx_timeout = mwifiex_tx_timeout, | ||
652 | .ndo_get_stats = mwifiex_get_stats, | ||
653 | .ndo_set_multicast_list = mwifiex_set_multicast_list, | ||
654 | }; | ||
655 | |||
656 | /* | ||
657 | * This function initializes the private structure parameters. | ||
658 | * | ||
659 | * The following wait queues are initialized - | ||
660 | * - IOCTL wait queue | ||
661 | * - Command wait queue | ||
662 | * - Statistics wait queue | ||
663 | * | ||
664 | * ...and the following default parameters are set - | ||
665 | * - Current key index : Set to 0 | ||
666 | * - Rate index : Set to auto | ||
667 | * - Media connected : Set to disconnected | ||
668 | * - Adhoc link sensed : Set to false | ||
669 | * - Nick name : Set to null | ||
670 | * - Number of Tx timeout : Set to 0 | ||
671 | * - Device address : Set to current address | ||
672 | * | ||
673 | * In addition, the CFG80211 work queue is also created. | ||
674 | */ | ||
675 | static void | ||
676 | mwifiex_init_priv_params(struct mwifiex_private *priv, struct net_device *dev) | ||
677 | { | ||
678 | dev->netdev_ops = &mwifiex_netdev_ops; | ||
679 | /* Initialize private structure */ | ||
680 | init_waitqueue_head(&priv->ioctl_wait_q); | ||
681 | init_waitqueue_head(&priv->cmd_wait_q); | ||
682 | init_waitqueue_head(&priv->w_stats_wait_q); | ||
683 | priv->current_key_index = 0; | ||
684 | priv->media_connected = false; | ||
685 | memset(&priv->nick_name, 0, sizeof(priv->nick_name)); | ||
686 | priv->num_tx_timeout = 0; | ||
687 | priv->workqueue = create_singlethread_workqueue("cfg80211_wq"); | ||
688 | INIT_WORK(&priv->cfg_workqueue, mwifiex_cfg80211_results); | ||
689 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); | ||
690 | } | ||
691 | |||
692 | /* | ||
693 | * This function adds a new logical interface. | ||
694 | * | ||
695 | * It allocates, initializes and registers the interface by performing | ||
696 | * the following opearations - | ||
697 | * - Allocate a new net device structure | ||
698 | * - Assign device name | ||
699 | * - Register the new device with CFG80211 subsystem | ||
700 | * - Initialize semaphore and private structure | ||
701 | * - Register the new device with kernel | ||
702 | * - Create the complete debug FS structure if configured | ||
703 | */ | ||
704 | static struct mwifiex_private *mwifiex_add_interface( | ||
705 | struct mwifiex_adapter *adapter, | ||
706 | u8 bss_index, u8 bss_type) | ||
707 | { | ||
708 | struct net_device *dev = NULL; | ||
709 | struct mwifiex_private *priv = NULL; | ||
710 | void *mdev_priv = NULL; | ||
711 | |||
712 | dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), "mlan%d", | ||
713 | ether_setup, 1); | ||
714 | if (!dev) { | ||
715 | dev_err(adapter->dev, "no memory available for netdevice\n"); | ||
716 | goto error; | ||
717 | } | ||
718 | if (dev_alloc_name(dev, dev->name)) { | ||
719 | dev_err(adapter->dev, "unable to alloc name for netdevice\n"); | ||
720 | goto error; | ||
721 | } | ||
722 | |||
723 | if (mwifiex_register_cfg80211(dev, adapter->priv[bss_index]->curr_addr, | ||
724 | adapter->priv[bss_index]) != 0) { | ||
725 | dev_err(adapter->dev, "cannot register netdevice with cfg80211\n"); | ||
726 | goto error; | ||
727 | } | ||
728 | /* Save the priv pointer in netdev */ | ||
729 | priv = adapter->priv[bss_index]; | ||
730 | mdev_priv = netdev_priv(dev); | ||
731 | *((unsigned long *) mdev_priv) = (unsigned long) priv; | ||
732 | |||
733 | priv->netdev = dev; | ||
734 | |||
735 | sema_init(&priv->async_sem, 1); | ||
736 | priv->scan_pending_on_block = false; | ||
737 | |||
738 | mwifiex_init_priv_params(priv, dev); | ||
739 | |||
740 | SET_NETDEV_DEV(dev, adapter->dev); | ||
741 | |||
742 | /* Register network device */ | ||
743 | if (register_netdev(dev)) { | ||
744 | dev_err(adapter->dev, "cannot register virtual network device\n"); | ||
745 | goto error; | ||
746 | } | ||
747 | |||
748 | dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name); | ||
749 | #ifdef CONFIG_DEBUG_FS | ||
750 | mwifiex_dev_debugfs_init(priv); | ||
751 | #endif | ||
752 | return priv; | ||
753 | error: | ||
754 | if (dev) | ||
755 | free_netdev(dev); | ||
756 | return NULL; | ||
757 | } | ||
758 | |||
759 | /* | ||
760 | * This function removes a logical interface. | ||
761 | * | ||
762 | * It deregisters, resets and frees the interface by performing | ||
763 | * the following operations - | ||
764 | * - Disconnect the device if connected, send wireless event to | ||
765 | * notify applications. | ||
766 | * - Remove the debug FS structure if configured | ||
767 | * - Unregister the device from kernel | ||
768 | * - Free the net device structure | ||
769 | * - Cancel all works and destroy work queue | ||
770 | * - Unregister and free the wireless device from CFG80211 subsystem | ||
771 | */ | ||
772 | static void | ||
773 | mwifiex_remove_interface(struct mwifiex_adapter *adapter, u8 bss_index) | ||
774 | { | ||
775 | struct net_device *dev = NULL; | ||
776 | struct mwifiex_private *priv = adapter->priv[bss_index]; | ||
777 | |||
778 | if (!priv) | ||
779 | return; | ||
780 | dev = priv->netdev; | ||
781 | |||
782 | if (priv->media_connected) | ||
783 | priv->media_connected = false; | ||
784 | |||
785 | #ifdef CONFIG_DEBUG_FS | ||
786 | mwifiex_dev_debugfs_remove(priv); | ||
787 | #endif | ||
788 | /* Last reference is our one */ | ||
789 | dev_dbg(adapter->dev, "info: %s: refcnt = %d\n", | ||
790 | dev->name, netdev_refcnt_read(dev)); | ||
791 | |||
792 | if (dev->reg_state == NETREG_REGISTERED) | ||
793 | unregister_netdev(dev); | ||
794 | |||
795 | /* Clear the priv in adapter */ | ||
796 | priv->netdev = NULL; | ||
797 | if (dev) | ||
798 | free_netdev(dev); | ||
799 | |||
800 | cancel_work_sync(&priv->cfg_workqueue); | ||
801 | flush_workqueue(priv->workqueue); | ||
802 | destroy_workqueue(priv->workqueue); | ||
803 | wiphy_unregister(priv->wdev->wiphy); | ||
804 | wiphy_free(priv->wdev->wiphy); | ||
805 | kfree(priv->wdev); | ||
806 | |||
807 | return; | ||
808 | } | ||
809 | |||
810 | /* | ||
811 | * Sends IOCTL request to shutdown firmware. | ||
812 | * | ||
813 | * This function allocates the IOCTL request buffer, fills it | ||
814 | * with requisite parameters and calls the IOCTL handler. | ||
815 | */ | ||
816 | int mwifiex_shutdown_fw(struct mwifiex_private *priv, u8 wait_option) | ||
817 | { | ||
818 | struct mwifiex_wait_queue *wait = NULL; | ||
819 | int status = 0; | ||
820 | |||
821 | /* Allocate an IOCTL request buffer */ | ||
822 | wait = mwifiex_alloc_fill_wait_queue(priv, wait_option); | ||
823 | if (!wait) | ||
824 | return -ENOMEM; | ||
825 | |||
826 | status = mwifiex_misc_ioctl_init_shutdown(priv->adapter, wait, | ||
827 | MWIFIEX_FUNC_SHUTDOWN); | ||
828 | |||
829 | status = mwifiex_request_ioctl(priv, wait, status, wait_option); | ||
830 | |||
831 | kfree(wait); | ||
832 | return status; | ||
833 | } | ||
834 | EXPORT_SYMBOL_GPL(mwifiex_shutdown_fw); | ||
835 | |||
836 | /* | ||
837 | * This function check if command is pending. | ||
838 | */ | ||
839 | int is_command_pending(struct mwifiex_adapter *adapter) | ||
840 | { | ||
841 | unsigned long flags; | ||
842 | int is_cmd_pend_q_empty; | ||
843 | |||
844 | spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); | ||
845 | is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); | ||
846 | spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); | ||
847 | |||
848 | return !is_cmd_pend_q_empty; | ||
849 | } | ||
850 | |||
851 | /* | ||
852 | * This function returns the correct private structure pointer based | ||
853 | * upon the BSS number. | ||
854 | */ | ||
855 | struct mwifiex_private * | ||
856 | mwifiex_bss_index_to_priv(struct mwifiex_adapter *adapter, u8 bss_index) | ||
857 | { | ||
858 | if (!adapter || (bss_index >= adapter->priv_num)) | ||
859 | return NULL; | ||
860 | return adapter->priv[bss_index]; | ||
861 | } | ||
862 | |||
863 | /* | ||
864 | * This is the main work queue function. | ||
865 | * | ||
866 | * It handles the main process, which in turn handles the complete | ||
867 | * driver operations. | ||
868 | */ | ||
869 | static void mwifiex_main_work_queue(struct work_struct *work) | ||
870 | { | ||
871 | struct mwifiex_adapter *adapter = | ||
872 | container_of(work, struct mwifiex_adapter, main_work); | ||
873 | |||
874 | if (adapter->surprise_removed) | ||
875 | return; | ||
876 | mwifiex_main_process(adapter); | ||
877 | } | ||
878 | |||
879 | /* | ||
880 | * This function cancels all works in the queue and destroys | ||
881 | * the main workqueue. | ||
882 | */ | ||
883 | static void | ||
884 | mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) | ||
885 | { | ||
886 | flush_workqueue(adapter->workqueue); | ||
887 | destroy_workqueue(adapter->workqueue); | ||
888 | adapter->workqueue = NULL; | ||
889 | } | ||
890 | |||
891 | /* | ||
892 | * This function adds the card. | ||
893 | * | ||
894 | * This function follows the following major steps to set up the device - | ||
895 | * - Initialize software. This includes probing the card, registering | ||
896 | * the interface operations table, and allocating/initializing the | ||
897 | * adapter structure | ||
898 | * - Set up the netlink socket | ||
899 | * - Create and start the main work queue | ||
900 | * - Register the device | ||
901 | * - Initialize firmware and hardware | ||
902 | * - Add logical interfaces | ||
903 | */ | ||
904 | int | ||
905 | mwifiex_add_card(void *card, struct semaphore *sem, | ||
906 | struct mwifiex_if_ops *if_ops) | ||
907 | { | ||
908 | int status = 0; | ||
909 | int i; | ||
910 | struct mwifiex_adapter *adapter = NULL; | ||
911 | struct mwifiex_drv_mode *drv_mode_info = &mwifiex_drv_mode_tbl[0]; | ||
912 | |||
913 | if (down_interruptible(sem)) | ||
914 | goto exit_sem_err; | ||
915 | |||
916 | if (mwifiex_init_sw(card, if_ops, (void **) &adapter)) { | ||
917 | pr_err("%s: software init failed\n", __func__); | ||
918 | goto err_init_sw; | ||
919 | } | ||
920 | |||
921 | adapter->drv_mode = drv_mode_info; | ||
922 | |||
923 | adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; | ||
924 | /* PnP and power profile */ | ||
925 | adapter->surprise_removed = false; | ||
926 | init_waitqueue_head(&adapter->init_wait_q); | ||
927 | adapter->is_suspended = false; | ||
928 | adapter->hs_activated = false; | ||
929 | init_waitqueue_head(&adapter->hs_activate_wait_q); | ||
930 | |||
931 | /* Create workqueue */ | ||
932 | adapter->workqueue = create_workqueue("MWIFIEX_WORK_QUEUE"); | ||
933 | if (!adapter->workqueue) | ||
934 | goto err_kmalloc; | ||
935 | |||
936 | INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); | ||
937 | |||
938 | /* Register the device. Fill up the private data structure with relevant | ||
939 | information from the card and request for the required IRQ. */ | ||
940 | if (adapter->if_ops.register_dev(adapter)) { | ||
941 | pr_err("%s: failed to register mwifiex device\n", __func__); | ||
942 | goto err_registerdev; | ||
943 | } | ||
944 | |||
945 | /* Init FW and HW */ | ||
946 | if (mwifiex_init_hw_fw(adapter)) { | ||
947 | pr_err("%s: firmware init failed\n", __func__); | ||
948 | goto err_init_fw; | ||
949 | } | ||
950 | /* Add interfaces */ | ||
951 | for (i = 0; i < drv_mode_info->intf_num; i++) { | ||
952 | if (!mwifiex_add_interface(adapter, i, | ||
953 | adapter->drv_mode->bss_attr[i].bss_type)) { | ||
954 | status = -1; | ||
955 | break; | ||
956 | } | ||
957 | } | ||
958 | if (status) | ||
959 | goto err_add_intf; | ||
960 | |||
961 | up(sem); | ||
962 | |||
963 | return 0; | ||
964 | |||
965 | err_add_intf: | ||
966 | for (i = 0; i < adapter->priv_num; i++) | ||
967 | mwifiex_remove_interface(adapter, i); | ||
968 | err_init_fw: | ||
969 | /* Unregister device */ | ||
970 | pr_debug("info: %s: unregister device\n", __func__); | ||
971 | adapter->if_ops.unregister_dev(adapter); | ||
972 | err_registerdev: | ||
973 | adapter->surprise_removed = true; | ||
974 | mwifiex_terminate_workqueue(adapter); | ||
975 | err_kmalloc: | ||
976 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_FW_READY) || | ||
977 | (adapter->hw_status == MWIFIEX_HW_STATUS_READY)) { | ||
978 | pr_debug("info: %s: shutdown mwifiex\n", __func__); | ||
979 | adapter->init_wait_q_woken = false; | ||
980 | status = mwifiex_shutdown_drv(adapter); | ||
981 | if (status == -EINPROGRESS) | ||
982 | wait_event_interruptible(adapter->init_wait_q, | ||
983 | adapter->init_wait_q_woken); | ||
984 | } | ||
985 | |||
986 | mwifiex_free_adapter(adapter); | ||
987 | |||
988 | err_init_sw: | ||
989 | up(sem); | ||
990 | |||
991 | exit_sem_err: | ||
992 | return -1; | ||
993 | } | ||
994 | EXPORT_SYMBOL_GPL(mwifiex_add_card); | ||
995 | |||
996 | /* | ||
997 | * This function removes the card. | ||
998 | * | ||
999 | * This function follows the following major steps to remove the device - | ||
1000 | * - Stop data traffic | ||
1001 | * - Shutdown firmware | ||
1002 | * - Remove the logical interfaces | ||
1003 | * - Terminate the work queue | ||
1004 | * - Unregister the device | ||
1005 | * - Free the adapter structure | ||
1006 | */ | ||
1007 | int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) | ||
1008 | { | ||
1009 | struct mwifiex_private *priv = NULL; | ||
1010 | int status; | ||
1011 | int i; | ||
1012 | |||
1013 | if (down_interruptible(sem)) | ||
1014 | goto exit_sem_err; | ||
1015 | |||
1016 | if (!adapter) | ||
1017 | goto exit_remove; | ||
1018 | |||
1019 | adapter->surprise_removed = true; | ||
1020 | |||
1021 | /* Stop data */ | ||
1022 | for (i = 0; i < adapter->priv_num; i++) { | ||
1023 | priv = adapter->priv[i]; | ||
1024 | if (priv) { | ||
1025 | if (!netif_queue_stopped(priv->netdev)) | ||
1026 | netif_stop_queue(priv->netdev); | ||
1027 | if (netif_carrier_ok(priv->netdev)) | ||
1028 | netif_carrier_off(priv->netdev); | ||
1029 | } | ||
1030 | } | ||
1031 | |||
1032 | dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n"); | ||
1033 | adapter->init_wait_q_woken = false; | ||
1034 | status = mwifiex_shutdown_drv(adapter); | ||
1035 | if (status == -EINPROGRESS) | ||
1036 | wait_event_interruptible(adapter->init_wait_q, | ||
1037 | adapter->init_wait_q_woken); | ||
1038 | dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n"); | ||
1039 | if (atomic_read(&adapter->rx_pending) || | ||
1040 | atomic_read(&adapter->tx_pending) || | ||
1041 | atomic_read(&adapter->ioctl_pending)) { | ||
1042 | dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, " | ||
1043 | "ioctl_pending=%d\n", | ||
1044 | atomic_read(&adapter->rx_pending), | ||
1045 | atomic_read(&adapter->tx_pending), | ||
1046 | atomic_read(&adapter->ioctl_pending)); | ||
1047 | } | ||
1048 | |||
1049 | /* Remove interface */ | ||
1050 | for (i = 0; i < adapter->priv_num; i++) | ||
1051 | mwifiex_remove_interface(adapter, i); | ||
1052 | |||
1053 | mwifiex_terminate_workqueue(adapter); | ||
1054 | |||
1055 | /* Unregister device */ | ||
1056 | dev_dbg(adapter->dev, "info: unregister device\n"); | ||
1057 | adapter->if_ops.unregister_dev(adapter); | ||
1058 | /* Free adapter structure */ | ||
1059 | dev_dbg(adapter->dev, "info: free adapter\n"); | ||
1060 | mwifiex_free_adapter(adapter); | ||
1061 | |||
1062 | exit_remove: | ||
1063 | up(sem); | ||
1064 | exit_sem_err: | ||
1065 | return 0; | ||
1066 | } | ||
1067 | EXPORT_SYMBOL_GPL(mwifiex_remove_card); | ||
1068 | |||
1069 | /* | ||
1070 | * This function initializes the module. | ||
1071 | * | ||
1072 | * The debug FS is also initialized if configured. | ||
1073 | */ | ||
1074 | static int | ||
1075 | mwifiex_init_module(void) | ||
1076 | { | ||
1077 | #ifdef CONFIG_DEBUG_FS | ||
1078 | mwifiex_debugfs_init(); | ||
1079 | #endif | ||
1080 | return 0; | ||
1081 | } | ||
1082 | |||
1083 | /* | ||
1084 | * This function cleans up the module. | ||
1085 | * | ||
1086 | * The debug FS is removed if available. | ||
1087 | */ | ||
1088 | static void | ||
1089 | mwifiex_cleanup_module(void) | ||
1090 | { | ||
1091 | #ifdef CONFIG_DEBUG_FS | ||
1092 | mwifiex_debugfs_remove(); | ||
1093 | #endif | ||
1094 | } | ||
1095 | |||
1096 | module_init(mwifiex_init_module); | ||
1097 | module_exit(mwifiex_cleanup_module); | ||
1098 | |||
1099 | MODULE_AUTHOR("Marvell International Ltd."); | ||
1100 | MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); | ||
1101 | MODULE_VERSION(VERSION); | ||
1102 | MODULE_LICENSE("GPL v2"); | ||