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) "; | |
28 | ||
5e6e3a92 BZ |
29 | /* |
30 | * This function registers the device and performs all the necessary | |
31 | * initializations. | |
32 | * | |
33 | * The following initialization operations are performed - | |
34 | * - Allocate adapter structure | |
35 | * - Save interface specific operations table in adapter | |
36 | * - Call interface specific initialization routine | |
37 | * - Allocate private structures | |
38 | * - Set default adapter structure parameters | |
39 | * - Initialize locks | |
40 | * | |
41 | * In case of any errors during inittialization, this function also ensures | |
42 | * proper cleanup before exiting. | |
43 | */ | |
44 | static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops, | |
287546df | 45 | void **padapter) |
5e6e3a92 | 46 | { |
2be7859f AK |
47 | struct mwifiex_adapter *adapter; |
48 | int i; | |
5e6e3a92 BZ |
49 | |
50 | adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL); | |
5e6e3a92 | 51 | if (!adapter) |
b53575ec | 52 | return -ENOMEM; |
5e6e3a92 | 53 | |
287546df | 54 | *padapter = adapter; |
5e6e3a92 BZ |
55 | adapter->card = card; |
56 | ||
57 | /* Save interface specific operations in adapter */ | |
58 | memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops)); | |
59 | ||
60 | /* card specific initialization has been deferred until now .. */ | |
636c4598 | 61 | if (adapter->if_ops.init_if(adapter)) |
5e6e3a92 BZ |
62 | goto error; |
63 | ||
64 | adapter->priv_num = 0; | |
5e6e3a92 | 65 | |
93a1df48 | 66 | /* Allocate memory for private structure */ |
f57c1edc | 67 | adapter->priv[0] = kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL); |
93a1df48 | 68 | if (!adapter->priv[0]) { |
f57c1edc YAP |
69 | dev_err(adapter->dev, |
70 | "%s: failed to alloc priv[0]\n", __func__); | |
93a1df48 | 71 | goto error; |
5e6e3a92 BZ |
72 | } |
73 | ||
93a1df48 YAP |
74 | adapter->priv_num++; |
75 | ||
76 | adapter->priv[0]->adapter = adapter; | |
44b815c6 | 77 | mwifiex_init_lock_list(adapter); |
5e6e3a92 BZ |
78 | |
79 | init_timer(&adapter->cmd_timer); | |
80 | adapter->cmd_timer.function = mwifiex_cmd_timeout_func; | |
81 | adapter->cmd_timer.data = (unsigned long) adapter; | |
82 | ||
5e6e3a92 BZ |
83 | return 0; |
84 | ||
85 | error: | |
86 | dev_dbg(adapter->dev, "info: leave mwifiex_register with error\n"); | |
87 | ||
93a1df48 | 88 | for (i = 0; i < adapter->priv_num; i++) |
5e6e3a92 | 89 | kfree(adapter->priv[i]); |
93a1df48 | 90 | |
5e6e3a92 BZ |
91 | kfree(adapter); |
92 | ||
93 | return -1; | |
94 | } | |
95 | ||
96 | /* | |
97 | * This function unregisters the device and performs all the necessary | |
98 | * cleanups. | |
99 | * | |
100 | * The following cleanup operations are performed - | |
101 | * - Free the timers | |
102 | * - Free beacon buffers | |
103 | * - Free private structures | |
104 | * - Free adapter structure | |
105 | */ | |
106 | static int mwifiex_unregister(struct mwifiex_adapter *adapter) | |
107 | { | |
270e58e8 | 108 | s32 i; |
5e6e3a92 BZ |
109 | |
110 | del_timer(&adapter->cmd_timer); | |
111 | ||
112 | /* Free private structures */ | |
113 | for (i = 0; i < adapter->priv_num; i++) { | |
114 | if (adapter->priv[i]) { | |
115 | mwifiex_free_curr_bcn(adapter->priv[i]); | |
116 | kfree(adapter->priv[i]); | |
117 | } | |
118 | } | |
119 | ||
120 | kfree(adapter); | |
121 | return 0; | |
122 | } | |
123 | ||
124 | /* | |
125 | * The main process. | |
126 | * | |
127 | * This function is the main procedure of the driver and handles various driver | |
128 | * operations. It runs in a loop and provides the core functionalities. | |
129 | * | |
130 | * The main responsibilities of this function are - | |
131 | * - Ensure concurrency control | |
132 | * - Handle pending interrupts and call interrupt handlers | |
133 | * - Wake up the card if required | |
134 | * - Handle command responses and call response handlers | |
135 | * - Handle events and call event handlers | |
136 | * - Execute pending commands | |
137 | * - Transmit pending data packets | |
138 | */ | |
139 | int mwifiex_main_process(struct mwifiex_adapter *adapter) | |
140 | { | |
141 | int ret = 0; | |
142 | unsigned long flags; | |
143 | ||
144 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | |
145 | ||
146 | /* Check if already processing */ | |
147 | if (adapter->mwifiex_processing) { | |
148 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
149 | goto exit_main_proc; | |
150 | } else { | |
151 | adapter->mwifiex_processing = true; | |
152 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
153 | } | |
154 | process_start: | |
155 | do { | |
156 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) || | |
157 | (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)) | |
158 | break; | |
159 | ||
160 | /* Handle pending interrupt if any */ | |
161 | if (adapter->int_status) { | |
162 | if (adapter->hs_activated) | |
163 | mwifiex_process_hs_config(adapter); | |
164 | adapter->if_ops.process_int_status(adapter); | |
165 | } | |
166 | ||
167 | /* Need to wake up the card ? */ | |
168 | if ((adapter->ps_state == PS_STATE_SLEEP) && | |
169 | (adapter->pm_wakeup_card_req && | |
170 | !adapter->pm_wakeup_fw_try) && | |
f57c1edc YAP |
171 | (is_command_pending(adapter) || |
172 | !mwifiex_wmm_lists_empty(adapter))) { | |
5e6e3a92 BZ |
173 | adapter->pm_wakeup_fw_try = true; |
174 | adapter->if_ops.wakeup(adapter); | |
175 | continue; | |
176 | } | |
177 | if (IS_CARD_RX_RCVD(adapter)) { | |
178 | adapter->pm_wakeup_fw_try = false; | |
179 | if (adapter->ps_state == PS_STATE_SLEEP) | |
180 | adapter->ps_state = PS_STATE_AWAKE; | |
181 | } else { | |
182 | /* We have tried to wakeup the card already */ | |
183 | if (adapter->pm_wakeup_fw_try) | |
184 | break; | |
185 | if (adapter->ps_state != PS_STATE_AWAKE || | |
186 | adapter->tx_lock_flag) | |
187 | break; | |
188 | ||
f57c1edc YAP |
189 | if (adapter->scan_processing || adapter->data_sent || |
190 | mwifiex_wmm_lists_empty(adapter)) { | |
191 | if (adapter->cmd_sent || adapter->curr_cmd || | |
192 | (!is_command_pending(adapter))) | |
5e6e3a92 BZ |
193 | break; |
194 | } | |
195 | } | |
196 | ||
197 | /* Check for Cmd Resp */ | |
198 | if (adapter->cmd_resp_received) { | |
199 | adapter->cmd_resp_received = false; | |
200 | mwifiex_process_cmdresp(adapter); | |
201 | ||
202 | /* call mwifiex back when init_fw is done */ | |
203 | if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) { | |
204 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | |
205 | mwifiex_init_fw_complete(adapter); | |
206 | } | |
207 | } | |
208 | ||
209 | /* Check for event */ | |
210 | if (adapter->event_received) { | |
211 | adapter->event_received = false; | |
212 | mwifiex_process_event(adapter); | |
213 | } | |
214 | ||
215 | /* Check if we need to confirm Sleep Request | |
216 | received previously */ | |
217 | if (adapter->ps_state == PS_STATE_PRE_SLEEP) { | |
218 | if (!adapter->cmd_sent && !adapter->curr_cmd) | |
219 | mwifiex_check_ps_cond(adapter); | |
220 | } | |
221 | ||
222 | /* * The ps_state may have been changed during processing of | |
223 | * Sleep Request event. | |
224 | */ | |
f57c1edc YAP |
225 | if ((adapter->ps_state == PS_STATE_SLEEP) || |
226 | (adapter->ps_state == PS_STATE_PRE_SLEEP) || | |
227 | (adapter->ps_state == PS_STATE_SLEEP_CFM) || | |
228 | adapter->tx_lock_flag) | |
5e6e3a92 BZ |
229 | continue; |
230 | ||
231 | if (!adapter->cmd_sent && !adapter->curr_cmd) { | |
232 | if (mwifiex_exec_next_cmd(adapter) == -1) { | |
233 | ret = -1; | |
234 | break; | |
235 | } | |
236 | } | |
237 | ||
238 | if (!adapter->scan_processing && !adapter->data_sent && | |
239 | !mwifiex_wmm_lists_empty(adapter)) { | |
240 | mwifiex_wmm_process_tx(adapter); | |
241 | if (adapter->hs_activated) { | |
242 | adapter->is_hs_configured = false; | |
243 | mwifiex_hs_activated_event | |
244 | (mwifiex_get_priv | |
245 | (adapter, MWIFIEX_BSS_ROLE_ANY), | |
246 | false); | |
247 | } | |
248 | } | |
249 | ||
250 | if (adapter->delay_null_pkt && !adapter->cmd_sent && | |
f57c1edc YAP |
251 | !adapter->curr_cmd && !is_command_pending(adapter) && |
252 | mwifiex_wmm_lists_empty(adapter)) { | |
5e6e3a92 BZ |
253 | if (!mwifiex_send_null_packet |
254 | (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
255 | MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | | |
256 | MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) { | |
257 | adapter->delay_null_pkt = false; | |
258 | adapter->ps_state = PS_STATE_SLEEP; | |
259 | } | |
260 | break; | |
261 | } | |
262 | } while (true); | |
263 | ||
264 | if ((adapter->int_status) || IS_CARD_RX_RCVD(adapter)) | |
265 | goto process_start; | |
266 | ||
267 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | |
268 | adapter->mwifiex_processing = false; | |
269 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
270 | ||
271 | exit_main_proc: | |
272 | if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) | |
273 | mwifiex_shutdown_drv(adapter); | |
274 | return ret; | |
275 | } | |
276 | ||
5e6e3a92 BZ |
277 | /* |
278 | * This function frees the adapter structure. | |
279 | * | |
280 | * Additionally, this closes the netlink socket, frees the timers | |
281 | * and private structures. | |
282 | */ | |
283 | static void mwifiex_free_adapter(struct mwifiex_adapter *adapter) | |
284 | { | |
285 | if (!adapter) { | |
286 | pr_err("%s: adapter is NULL\n", __func__); | |
287 | return; | |
288 | } | |
289 | ||
290 | mwifiex_unregister(adapter); | |
291 | pr_debug("info: %s: free adapter\n", __func__); | |
292 | } | |
293 | ||
294 | /* | |
59a4cc25 | 295 | * This function gets firmware and initializes it. |
5e6e3a92 BZ |
296 | * |
297 | * The main initialization steps followed are - | |
298 | * - Download the correct firmware to card | |
5e6e3a92 BZ |
299 | * - Issue the init commands to firmware |
300 | */ | |
59a4cc25 | 301 | static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) |
5e6e3a92 | 302 | { |
59a4cc25 AK |
303 | int ret; |
304 | char fmt[64]; | |
305 | struct mwifiex_private *priv; | |
306 | struct mwifiex_adapter *adapter = context; | |
5e6e3a92 BZ |
307 | struct mwifiex_fw_image fw; |
308 | ||
59a4cc25 AK |
309 | if (!firmware) { |
310 | dev_err(adapter->dev, | |
311 | "Failed to get firmware %s\n", adapter->fw_name); | |
5e6e3a92 BZ |
312 | goto done; |
313 | } | |
59a4cc25 AK |
314 | |
315 | memset(&fw, 0, sizeof(struct mwifiex_fw_image)); | |
316 | adapter->firmware = firmware; | |
5e6e3a92 BZ |
317 | fw.fw_buf = (u8 *) adapter->firmware->data; |
318 | fw.fw_len = adapter->firmware->size; | |
319 | ||
320 | ret = mwifiex_dnld_fw(adapter, &fw); | |
321 | if (ret == -1) | |
322 | goto done; | |
323 | ||
324 | dev_notice(adapter->dev, "WLAN FW is active\n"); | |
325 | ||
326 | adapter->init_wait_q_woken = false; | |
327 | ret = mwifiex_init_fw(adapter); | |
328 | if (ret == -1) { | |
329 | goto done; | |
330 | } else if (!ret) { | |
331 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | |
332 | goto done; | |
333 | } | |
334 | /* Wait for mwifiex_init to complete */ | |
335 | wait_event_interruptible(adapter->init_wait_q, | |
336 | adapter->init_wait_q_woken); | |
59a4cc25 | 337 | if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) |
5e6e3a92 | 338 | goto done; |
59a4cc25 AK |
339 | |
340 | priv = adapter->priv[0]; | |
341 | if (mwifiex_register_cfg80211(priv) != 0) { | |
342 | dev_err(adapter->dev, "cannot register with cfg80211\n"); | |
343 | goto err_init_fw; | |
344 | } | |
345 | ||
346 | rtnl_lock(); | |
347 | /* Create station interface by default */ | |
348 | if (!mwifiex_add_virtual_intf(priv->wdev->wiphy, "mlan%d", | |
349 | NL80211_IFTYPE_STATION, NULL, NULL)) { | |
350 | dev_err(adapter->dev, "cannot create default STA interface\n"); | |
351 | goto err_add_intf; | |
5e6e3a92 | 352 | } |
59a4cc25 AK |
353 | rtnl_unlock(); |
354 | ||
355 | mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); | |
356 | dev_notice(adapter->dev, "driver_version = %s\n", fmt); | |
357 | goto done; | |
5e6e3a92 | 358 | |
59a4cc25 AK |
359 | err_add_intf: |
360 | mwifiex_del_virtual_intf(priv->wdev->wiphy, priv->netdev); | |
361 | rtnl_unlock(); | |
362 | err_init_fw: | |
363 | pr_debug("info: %s: unregister device\n", __func__); | |
364 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 | 365 | done: |
4fb25c59 | 366 | release_firmware(adapter->firmware); |
59a4cc25 AK |
367 | complete(&adapter->fw_load); |
368 | return; | |
369 | } | |
370 | ||
371 | /* | |
372 | * This function initializes the hardware and gets firmware. | |
373 | */ | |
374 | static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter) | |
375 | { | |
376 | int ret; | |
377 | ||
378 | init_completion(&adapter->fw_load); | |
379 | ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, | |
380 | adapter->dev, GFP_KERNEL, adapter, | |
381 | mwifiex_fw_dpc); | |
382 | if (ret < 0) | |
383 | dev_err(adapter->dev, | |
384 | "request_firmware_nowait() returned error %d\n", ret); | |
5e6e3a92 BZ |
385 | return ret; |
386 | } | |
387 | ||
388 | /* | |
389 | * This function fills a driver buffer. | |
390 | * | |
391 | * The function associates a given SKB with the provided driver buffer | |
392 | * and also updates some of the SKB parameters, including IP header, | |
393 | * priority and timestamp. | |
394 | */ | |
395 | static void | |
396 | mwifiex_fill_buffer(struct sk_buff *skb) | |
397 | { | |
270e58e8 | 398 | struct ethhdr *eth; |
5e6e3a92 BZ |
399 | struct iphdr *iph; |
400 | struct timeval tv; | |
401 | u8 tid = 0; | |
402 | ||
403 | eth = (struct ethhdr *) skb->data; | |
404 | switch (eth->h_proto) { | |
405 | case __constant_htons(ETH_P_IP): | |
406 | iph = ip_hdr(skb); | |
407 | tid = IPTOS_PREC(iph->tos); | |
408 | pr_debug("data: packet type ETH_P_IP: %04x, tid=%#x prio=%#x\n", | |
f57c1edc | 409 | eth->h_proto, tid, skb->priority); |
5e6e3a92 BZ |
410 | break; |
411 | case __constant_htons(ETH_P_ARP): | |
412 | pr_debug("data: ARP packet: %04x\n", eth->h_proto); | |
413 | default: | |
414 | break; | |
415 | } | |
416 | /* Offset for TOS field in the IP header */ | |
417 | #define IPTOS_OFFSET 5 | |
418 | tid = (tid >> IPTOS_OFFSET); | |
419 | skb->priority = tid; | |
420 | /* Record the current time the packet was queued; used to | |
421 | determine the amount of time the packet was queued in | |
422 | the driver before it was sent to the firmware. | |
423 | The delay is then sent along with the packet to the | |
424 | firmware for aggregate delay calculation for stats and | |
425 | MSDU lifetime expiry. | |
426 | */ | |
427 | do_gettimeofday(&tv); | |
428 | skb->tstamp = timeval_to_ktime(tv); | |
5e6e3a92 BZ |
429 | } |
430 | ||
431 | /* | |
432 | * CFG802.11 network device handler for open. | |
433 | * | |
434 | * Starts the data queue. | |
435 | */ | |
436 | static int | |
437 | mwifiex_open(struct net_device *dev) | |
438 | { | |
bbea3bc4 | 439 | netif_tx_start_all_queues(dev); |
5e6e3a92 BZ |
440 | return 0; |
441 | } | |
442 | ||
443 | /* | |
444 | * CFG802.11 network device handler for close. | |
445 | */ | |
446 | static int | |
447 | mwifiex_close(struct net_device *dev) | |
448 | { | |
449 | return 0; | |
450 | } | |
451 | ||
452 | /* | |
453 | * CFG802.11 network device handler for data transmission. | |
454 | */ | |
455 | static int | |
456 | mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
457 | { | |
458 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
270e58e8 | 459 | struct sk_buff *new_skb; |
5e6e3a92 BZ |
460 | struct mwifiex_txinfo *tx_info; |
461 | ||
9da9a3b2 | 462 | dev_dbg(priv->adapter->dev, "data: %lu BSS(%d-%d): Data <= kernel\n", |
f57c1edc | 463 | jiffies, priv->bss_type, priv->bss_num); |
5e6e3a92 BZ |
464 | |
465 | if (priv->adapter->surprise_removed) { | |
b53575ec | 466 | kfree_skb(skb); |
5e6e3a92 BZ |
467 | priv->stats.tx_dropped++; |
468 | return 0; | |
469 | } | |
470 | if (!skb->len || (skb->len > ETH_FRAME_LEN)) { | |
471 | dev_err(priv->adapter->dev, "Tx: bad skb len %d\n", skb->len); | |
b53575ec | 472 | kfree_skb(skb); |
5e6e3a92 BZ |
473 | priv->stats.tx_dropped++; |
474 | return 0; | |
475 | } | |
476 | if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { | |
477 | dev_dbg(priv->adapter->dev, | |
478 | "data: Tx: insufficient skb headroom %d\n", | |
f57c1edc | 479 | skb_headroom(skb)); |
5e6e3a92 BZ |
480 | /* Insufficient skb headroom - allocate a new skb */ |
481 | new_skb = | |
482 | skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); | |
483 | if (unlikely(!new_skb)) { | |
484 | dev_err(priv->adapter->dev, "Tx: cannot alloca new_skb\n"); | |
b53575ec | 485 | kfree_skb(skb); |
5e6e3a92 BZ |
486 | priv->stats.tx_dropped++; |
487 | return 0; | |
488 | } | |
489 | kfree_skb(skb); | |
490 | skb = new_skb; | |
491 | dev_dbg(priv->adapter->dev, "info: new skb headroomd %d\n", | |
f57c1edc | 492 | skb_headroom(skb)); |
5e6e3a92 BZ |
493 | } |
494 | ||
495 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
9da9a3b2 YAP |
496 | tx_info->bss_num = priv->bss_num; |
497 | tx_info->bss_type = priv->bss_type; | |
5e6e3a92 BZ |
498 | mwifiex_fill_buffer(skb); |
499 | ||
2690e1bb | 500 | mwifiex_wmm_add_buf_txqueue(priv, skb); |
5e6e3a92 BZ |
501 | atomic_inc(&priv->adapter->tx_pending); |
502 | ||
503 | if (atomic_read(&priv->adapter->tx_pending) >= MAX_TX_PENDING) { | |
bbea3bc4 AP |
504 | mwifiex_set_trans_start(dev); |
505 | mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter); | |
5e6e3a92 BZ |
506 | } |
507 | ||
508 | queue_work(priv->adapter->workqueue, &priv->adapter->main_work); | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
513 | /* | |
514 | * CFG802.11 network device handler for setting MAC address. | |
515 | */ | |
516 | static int | |
517 | mwifiex_set_mac_address(struct net_device *dev, void *addr) | |
518 | { | |
519 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
a5ffddb7 | 520 | struct sockaddr *hw_addr = addr; |
270e58e8 | 521 | int ret; |
5e6e3a92 BZ |
522 | |
523 | memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN); | |
524 | ||
600f5d90 AK |
525 | /* Send request to firmware */ |
526 | ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_MAC_ADDRESS, | |
527 | HostCmd_ACT_GEN_SET, 0, NULL); | |
528 | ||
529 | if (!ret) | |
530 | memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN); | |
531 | else | |
f57c1edc YAP |
532 | dev_err(priv->adapter->dev, |
533 | "set mac address failed: ret=%d\n", ret); | |
600f5d90 | 534 | |
5e6e3a92 BZ |
535 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
536 | ||
600f5d90 | 537 | return ret; |
5e6e3a92 BZ |
538 | } |
539 | ||
540 | /* | |
541 | * CFG802.11 network device handler for setting multicast list. | |
542 | */ | |
543 | static void mwifiex_set_multicast_list(struct net_device *dev) | |
544 | { | |
545 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
600f5d90 AK |
546 | struct mwifiex_multicast_list mcast_list; |
547 | ||
548 | if (dev->flags & IFF_PROMISC) { | |
549 | mcast_list.mode = MWIFIEX_PROMISC_MODE; | |
550 | } else if (dev->flags & IFF_ALLMULTI || | |
551 | netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { | |
552 | mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; | |
553 | } else { | |
554 | mcast_list.mode = MWIFIEX_MULTICAST_MODE; | |
555 | if (netdev_mc_count(dev)) | |
556 | mcast_list.num_multicast_addr = | |
557 | mwifiex_copy_mcast_addr(&mcast_list, dev); | |
558 | } | |
559 | mwifiex_request_set_multicast_list(priv, &mcast_list); | |
5e6e3a92 BZ |
560 | } |
561 | ||
562 | /* | |
563 | * CFG802.11 network device handler for transmission timeout. | |
564 | */ | |
565 | static void | |
566 | mwifiex_tx_timeout(struct net_device *dev) | |
567 | { | |
568 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
569 | ||
9da9a3b2 | 570 | dev_err(priv->adapter->dev, "%lu : Tx timeout, bss_type-num = %d-%d\n", |
f57c1edc | 571 | jiffies, priv->bss_type, priv->bss_num); |
bbea3bc4 | 572 | mwifiex_set_trans_start(dev); |
5e6e3a92 BZ |
573 | priv->num_tx_timeout++; |
574 | } | |
575 | ||
576 | /* | |
577 | * CFG802.11 network device handler for statistics retrieval. | |
578 | */ | |
579 | static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) | |
580 | { | |
581 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
582 | ||
583 | return &priv->stats; | |
584 | } | |
585 | ||
586 | /* Network device handlers */ | |
587 | static const struct net_device_ops mwifiex_netdev_ops = { | |
588 | .ndo_open = mwifiex_open, | |
589 | .ndo_stop = mwifiex_close, | |
590 | .ndo_start_xmit = mwifiex_hard_start_xmit, | |
591 | .ndo_set_mac_address = mwifiex_set_mac_address, | |
592 | .ndo_tx_timeout = mwifiex_tx_timeout, | |
593 | .ndo_get_stats = mwifiex_get_stats, | |
afc4b13d | 594 | .ndo_set_rx_mode = mwifiex_set_multicast_list, |
5e6e3a92 BZ |
595 | }; |
596 | ||
597 | /* | |
598 | * This function initializes the private structure parameters. | |
599 | * | |
600 | * The following wait queues are initialized - | |
601 | * - IOCTL wait queue | |
602 | * - Command wait queue | |
603 | * - Statistics wait queue | |
604 | * | |
605 | * ...and the following default parameters are set - | |
606 | * - Current key index : Set to 0 | |
607 | * - Rate index : Set to auto | |
608 | * - Media connected : Set to disconnected | |
609 | * - Adhoc link sensed : Set to false | |
610 | * - Nick name : Set to null | |
611 | * - Number of Tx timeout : Set to 0 | |
612 | * - Device address : Set to current address | |
613 | * | |
614 | * In addition, the CFG80211 work queue is also created. | |
615 | */ | |
93a1df48 YAP |
616 | void mwifiex_init_priv_params(struct mwifiex_private *priv, |
617 | struct net_device *dev) | |
5e6e3a92 BZ |
618 | { |
619 | dev->netdev_ops = &mwifiex_netdev_ops; | |
620 | /* Initialize private structure */ | |
5e6e3a92 BZ |
621 | priv->current_key_index = 0; |
622 | priv->media_connected = false; | |
623 | memset(&priv->nick_name, 0, sizeof(priv->nick_name)); | |
624 | priv->num_tx_timeout = 0; | |
5e6e3a92 BZ |
625 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
626 | } | |
627 | ||
5e6e3a92 BZ |
628 | /* |
629 | * This function check if command is pending. | |
630 | */ | |
631 | int is_command_pending(struct mwifiex_adapter *adapter) | |
632 | { | |
633 | unsigned long flags; | |
634 | int is_cmd_pend_q_empty; | |
635 | ||
636 | spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); | |
637 | is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); | |
638 | spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); | |
639 | ||
640 | return !is_cmd_pend_q_empty; | |
641 | } | |
642 | ||
5e6e3a92 BZ |
643 | /* |
644 | * This is the main work queue function. | |
645 | * | |
646 | * It handles the main process, which in turn handles the complete | |
647 | * driver operations. | |
648 | */ | |
649 | static void mwifiex_main_work_queue(struct work_struct *work) | |
650 | { | |
651 | struct mwifiex_adapter *adapter = | |
652 | container_of(work, struct mwifiex_adapter, main_work); | |
653 | ||
654 | if (adapter->surprise_removed) | |
655 | return; | |
656 | mwifiex_main_process(adapter); | |
657 | } | |
658 | ||
659 | /* | |
660 | * This function cancels all works in the queue and destroys | |
661 | * the main workqueue. | |
662 | */ | |
663 | static void | |
664 | mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) | |
665 | { | |
666 | flush_workqueue(adapter->workqueue); | |
667 | destroy_workqueue(adapter->workqueue); | |
668 | adapter->workqueue = NULL; | |
669 | } | |
670 | ||
671 | /* | |
672 | * This function adds the card. | |
673 | * | |
674 | * This function follows the following major steps to set up the device - | |
675 | * - Initialize software. This includes probing the card, registering | |
676 | * the interface operations table, and allocating/initializing the | |
677 | * adapter structure | |
678 | * - Set up the netlink socket | |
679 | * - Create and start the main work queue | |
680 | * - Register the device | |
681 | * - Initialize firmware and hardware | |
682 | * - Add logical interfaces | |
683 | */ | |
684 | int | |
685 | mwifiex_add_card(void *card, struct semaphore *sem, | |
d930faee | 686 | struct mwifiex_if_ops *if_ops, u8 iface_type) |
5e6e3a92 | 687 | { |
2be7859f | 688 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
689 | |
690 | if (down_interruptible(sem)) | |
691 | goto exit_sem_err; | |
692 | ||
93a1df48 | 693 | if (mwifiex_register(card, if_ops, (void **)&adapter)) { |
5e6e3a92 BZ |
694 | pr_err("%s: software init failed\n", __func__); |
695 | goto err_init_sw; | |
696 | } | |
697 | ||
d930faee AK |
698 | adapter->iface_type = iface_type; |
699 | ||
5e6e3a92 | 700 | adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; |
5e6e3a92 BZ |
701 | adapter->surprise_removed = false; |
702 | init_waitqueue_head(&adapter->init_wait_q); | |
703 | adapter->is_suspended = false; | |
704 | adapter->hs_activated = false; | |
705 | init_waitqueue_head(&adapter->hs_activate_wait_q); | |
600f5d90 AK |
706 | adapter->cmd_wait_q_required = false; |
707 | init_waitqueue_head(&adapter->cmd_wait_q.wait); | |
600f5d90 | 708 | adapter->cmd_wait_q.status = 0; |
efaaa8b8 | 709 | adapter->scan_wait_q_woken = false; |
5e6e3a92 | 710 | |
5e6e3a92 BZ |
711 | adapter->workqueue = create_workqueue("MWIFIEX_WORK_QUEUE"); |
712 | if (!adapter->workqueue) | |
713 | goto err_kmalloc; | |
714 | ||
715 | INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); | |
716 | ||
717 | /* Register the device. Fill up the private data structure with relevant | |
718 | information from the card and request for the required IRQ. */ | |
719 | if (adapter->if_ops.register_dev(adapter)) { | |
720 | pr_err("%s: failed to register mwifiex device\n", __func__); | |
721 | goto err_registerdev; | |
722 | } | |
723 | ||
5e6e3a92 BZ |
724 | if (mwifiex_init_hw_fw(adapter)) { |
725 | pr_err("%s: firmware init failed\n", __func__); | |
726 | goto err_init_fw; | |
727 | } | |
2be7859f | 728 | |
5e6e3a92 | 729 | up(sem); |
5e6e3a92 BZ |
730 | return 0; |
731 | ||
5e6e3a92 | 732 | err_init_fw: |
5e6e3a92 BZ |
733 | pr_debug("info: %s: unregister device\n", __func__); |
734 | adapter->if_ops.unregister_dev(adapter); | |
735 | err_registerdev: | |
736 | adapter->surprise_removed = true; | |
737 | mwifiex_terminate_workqueue(adapter); | |
738 | err_kmalloc: | |
739 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_FW_READY) || | |
740 | (adapter->hw_status == MWIFIEX_HW_STATUS_READY)) { | |
741 | pr_debug("info: %s: shutdown mwifiex\n", __func__); | |
742 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
743 | |
744 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
745 | wait_event_interruptible(adapter->init_wait_q, |
746 | adapter->init_wait_q_woken); | |
747 | } | |
748 | ||
749 | mwifiex_free_adapter(adapter); | |
750 | ||
751 | err_init_sw: | |
752 | up(sem); | |
753 | ||
754 | exit_sem_err: | |
755 | return -1; | |
756 | } | |
757 | EXPORT_SYMBOL_GPL(mwifiex_add_card); | |
758 | ||
759 | /* | |
760 | * This function removes the card. | |
761 | * | |
762 | * This function follows the following major steps to remove the device - | |
763 | * - Stop data traffic | |
764 | * - Shutdown firmware | |
765 | * - Remove the logical interfaces | |
766 | * - Terminate the work queue | |
767 | * - Unregister the device | |
768 | * - Free the adapter structure | |
769 | */ | |
770 | int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) | |
771 | { | |
772 | struct mwifiex_private *priv = NULL; | |
5e6e3a92 BZ |
773 | int i; |
774 | ||
775 | if (down_interruptible(sem)) | |
776 | goto exit_sem_err; | |
777 | ||
778 | if (!adapter) | |
779 | goto exit_remove; | |
780 | ||
781 | adapter->surprise_removed = true; | |
782 | ||
783 | /* Stop data */ | |
784 | for (i = 0; i < adapter->priv_num; i++) { | |
785 | priv = adapter->priv[i]; | |
93a1df48 | 786 | if (priv && priv->netdev) { |
5e6e3a92 | 787 | if (!netif_queue_stopped(priv->netdev)) |
bbea3bc4 | 788 | mwifiex_stop_net_dev_queue(priv->netdev, |
f57c1edc | 789 | adapter); |
5e6e3a92 BZ |
790 | if (netif_carrier_ok(priv->netdev)) |
791 | netif_carrier_off(priv->netdev); | |
792 | } | |
793 | } | |
794 | ||
795 | dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n"); | |
796 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
797 | |
798 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
799 | wait_event_interruptible(adapter->init_wait_q, |
800 | adapter->init_wait_q_woken); | |
801 | dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n"); | |
802 | if (atomic_read(&adapter->rx_pending) || | |
803 | atomic_read(&adapter->tx_pending) || | |
600f5d90 | 804 | atomic_read(&adapter->cmd_pending)) { |
5e6e3a92 | 805 | dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, " |
600f5d90 | 806 | "cmd_pending=%d\n", |
5e6e3a92 BZ |
807 | atomic_read(&adapter->rx_pending), |
808 | atomic_read(&adapter->tx_pending), | |
600f5d90 | 809 | atomic_read(&adapter->cmd_pending)); |
5e6e3a92 BZ |
810 | } |
811 | ||
93a1df48 YAP |
812 | for (i = 0; i < adapter->priv_num; i++) { |
813 | priv = adapter->priv[i]; | |
814 | ||
815 | if (!priv) | |
816 | continue; | |
817 | ||
818 | rtnl_lock(); | |
2da8cbf8 AK |
819 | if (priv->wdev && priv->netdev) |
820 | mwifiex_del_virtual_intf(priv->wdev->wiphy, | |
821 | priv->netdev); | |
93a1df48 YAP |
822 | rtnl_unlock(); |
823 | } | |
824 | ||
3d82de0f YAP |
825 | priv = adapter->priv[0]; |
826 | if (!priv) | |
827 | goto exit_remove; | |
828 | ||
2da8cbf8 AK |
829 | if (priv->wdev) { |
830 | wiphy_unregister(priv->wdev->wiphy); | |
831 | wiphy_free(priv->wdev->wiphy); | |
832 | kfree(priv->wdev); | |
833 | } | |
5e6e3a92 BZ |
834 | |
835 | mwifiex_terminate_workqueue(adapter); | |
836 | ||
837 | /* Unregister device */ | |
838 | dev_dbg(adapter->dev, "info: unregister device\n"); | |
839 | adapter->if_ops.unregister_dev(adapter); | |
840 | /* Free adapter structure */ | |
841 | dev_dbg(adapter->dev, "info: free adapter\n"); | |
842 | mwifiex_free_adapter(adapter); | |
843 | ||
844 | exit_remove: | |
845 | up(sem); | |
846 | exit_sem_err: | |
847 | return 0; | |
848 | } | |
849 | EXPORT_SYMBOL_GPL(mwifiex_remove_card); | |
850 | ||
851 | /* | |
852 | * This function initializes the module. | |
853 | * | |
854 | * The debug FS is also initialized if configured. | |
855 | */ | |
856 | static int | |
857 | mwifiex_init_module(void) | |
858 | { | |
859 | #ifdef CONFIG_DEBUG_FS | |
860 | mwifiex_debugfs_init(); | |
861 | #endif | |
862 | return 0; | |
863 | } | |
864 | ||
865 | /* | |
866 | * This function cleans up the module. | |
867 | * | |
868 | * The debug FS is removed if available. | |
869 | */ | |
870 | static void | |
871 | mwifiex_cleanup_module(void) | |
872 | { | |
873 | #ifdef CONFIG_DEBUG_FS | |
874 | mwifiex_debugfs_remove(); | |
875 | #endif | |
876 | } | |
877 | ||
878 | module_init(mwifiex_init_module); | |
879 | module_exit(mwifiex_cleanup_module); | |
880 | ||
881 | MODULE_AUTHOR("Marvell International Ltd."); | |
882 | MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); | |
883 | MODULE_VERSION(VERSION); | |
884 | MODULE_LICENSE("GPL v2"); |