Commit | Line | Data |
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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 | /* | |
295 | * This function initializes the hardware and firmware. | |
296 | * | |
297 | * The main initialization steps followed are - | |
298 | * - Download the correct firmware to card | |
299 | * - Allocate and initialize the adapter structure | |
300 | * - Initialize the private structures | |
301 | * - Issue the init commands to firmware | |
302 | */ | |
303 | static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter) | |
304 | { | |
270e58e8 | 305 | int ret, err; |
5e6e3a92 BZ |
306 | struct mwifiex_fw_image fw; |
307 | ||
308 | memset(&fw, 0, sizeof(struct mwifiex_fw_image)); | |
309 | ||
4a7f5db1 AK |
310 | err = request_firmware(&adapter->firmware, adapter->fw_name, |
311 | adapter->dev); | |
5e6e3a92 BZ |
312 | if (err < 0) { |
313 | dev_err(adapter->dev, "request_firmware() returned" | |
314 | " error code %#x\n", err); | |
315 | ret = -1; | |
316 | goto done; | |
317 | } | |
318 | fw.fw_buf = (u8 *) adapter->firmware->data; | |
319 | fw.fw_len = adapter->firmware->size; | |
320 | ||
321 | ret = mwifiex_dnld_fw(adapter, &fw); | |
322 | if (ret == -1) | |
323 | goto done; | |
324 | ||
325 | dev_notice(adapter->dev, "WLAN FW is active\n"); | |
326 | ||
327 | adapter->init_wait_q_woken = false; | |
328 | ret = mwifiex_init_fw(adapter); | |
329 | if (ret == -1) { | |
330 | goto done; | |
331 | } else if (!ret) { | |
332 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | |
333 | goto done; | |
334 | } | |
335 | /* Wait for mwifiex_init to complete */ | |
336 | wait_event_interruptible(adapter->init_wait_q, | |
337 | adapter->init_wait_q_woken); | |
338 | if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) { | |
339 | ret = -1; | |
340 | goto done; | |
341 | } | |
342 | ret = 0; | |
343 | ||
344 | done: | |
4fb25c59 | 345 | release_firmware(adapter->firmware); |
5e6e3a92 BZ |
346 | if (ret) |
347 | ret = -1; | |
348 | return ret; | |
349 | } | |
350 | ||
351 | /* | |
352 | * This function fills a driver buffer. | |
353 | * | |
354 | * The function associates a given SKB with the provided driver buffer | |
355 | * and also updates some of the SKB parameters, including IP header, | |
356 | * priority and timestamp. | |
357 | */ | |
358 | static void | |
359 | mwifiex_fill_buffer(struct sk_buff *skb) | |
360 | { | |
270e58e8 | 361 | struct ethhdr *eth; |
5e6e3a92 BZ |
362 | struct iphdr *iph; |
363 | struct timeval tv; | |
364 | u8 tid = 0; | |
365 | ||
366 | eth = (struct ethhdr *) skb->data; | |
367 | switch (eth->h_proto) { | |
368 | case __constant_htons(ETH_P_IP): | |
369 | iph = ip_hdr(skb); | |
370 | tid = IPTOS_PREC(iph->tos); | |
371 | pr_debug("data: packet type ETH_P_IP: %04x, tid=%#x prio=%#x\n", | |
f57c1edc | 372 | eth->h_proto, tid, skb->priority); |
5e6e3a92 BZ |
373 | break; |
374 | case __constant_htons(ETH_P_ARP): | |
375 | pr_debug("data: ARP packet: %04x\n", eth->h_proto); | |
376 | default: | |
377 | break; | |
378 | } | |
379 | /* Offset for TOS field in the IP header */ | |
380 | #define IPTOS_OFFSET 5 | |
381 | tid = (tid >> IPTOS_OFFSET); | |
382 | skb->priority = tid; | |
383 | /* Record the current time the packet was queued; used to | |
384 | determine the amount of time the packet was queued in | |
385 | the driver before it was sent to the firmware. | |
386 | The delay is then sent along with the packet to the | |
387 | firmware for aggregate delay calculation for stats and | |
388 | MSDU lifetime expiry. | |
389 | */ | |
390 | do_gettimeofday(&tv); | |
391 | skb->tstamp = timeval_to_ktime(tv); | |
5e6e3a92 BZ |
392 | } |
393 | ||
394 | /* | |
395 | * CFG802.11 network device handler for open. | |
396 | * | |
397 | * Starts the data queue. | |
398 | */ | |
399 | static int | |
400 | mwifiex_open(struct net_device *dev) | |
401 | { | |
bbea3bc4 | 402 | netif_tx_start_all_queues(dev); |
5e6e3a92 BZ |
403 | return 0; |
404 | } | |
405 | ||
406 | /* | |
407 | * CFG802.11 network device handler for close. | |
408 | */ | |
409 | static int | |
410 | mwifiex_close(struct net_device *dev) | |
411 | { | |
412 | return 0; | |
413 | } | |
414 | ||
415 | /* | |
416 | * CFG802.11 network device handler for data transmission. | |
417 | */ | |
418 | static int | |
419 | mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
420 | { | |
421 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
270e58e8 | 422 | struct sk_buff *new_skb; |
5e6e3a92 BZ |
423 | struct mwifiex_txinfo *tx_info; |
424 | ||
9da9a3b2 | 425 | dev_dbg(priv->adapter->dev, "data: %lu BSS(%d-%d): Data <= kernel\n", |
f57c1edc | 426 | jiffies, priv->bss_type, priv->bss_num); |
5e6e3a92 BZ |
427 | |
428 | if (priv->adapter->surprise_removed) { | |
b53575ec | 429 | kfree_skb(skb); |
5e6e3a92 BZ |
430 | priv->stats.tx_dropped++; |
431 | return 0; | |
432 | } | |
433 | if (!skb->len || (skb->len > ETH_FRAME_LEN)) { | |
434 | dev_err(priv->adapter->dev, "Tx: bad skb len %d\n", skb->len); | |
b53575ec | 435 | kfree_skb(skb); |
5e6e3a92 BZ |
436 | priv->stats.tx_dropped++; |
437 | return 0; | |
438 | } | |
439 | if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { | |
440 | dev_dbg(priv->adapter->dev, | |
441 | "data: Tx: insufficient skb headroom %d\n", | |
f57c1edc | 442 | skb_headroom(skb)); |
5e6e3a92 BZ |
443 | /* Insufficient skb headroom - allocate a new skb */ |
444 | new_skb = | |
445 | skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); | |
446 | if (unlikely(!new_skb)) { | |
447 | dev_err(priv->adapter->dev, "Tx: cannot alloca new_skb\n"); | |
b53575ec | 448 | kfree_skb(skb); |
5e6e3a92 BZ |
449 | priv->stats.tx_dropped++; |
450 | return 0; | |
451 | } | |
452 | kfree_skb(skb); | |
453 | skb = new_skb; | |
454 | dev_dbg(priv->adapter->dev, "info: new skb headroomd %d\n", | |
f57c1edc | 455 | skb_headroom(skb)); |
5e6e3a92 BZ |
456 | } |
457 | ||
458 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
9da9a3b2 YAP |
459 | tx_info->bss_num = priv->bss_num; |
460 | tx_info->bss_type = priv->bss_type; | |
5e6e3a92 BZ |
461 | mwifiex_fill_buffer(skb); |
462 | ||
2690e1bb | 463 | mwifiex_wmm_add_buf_txqueue(priv, skb); |
5e6e3a92 BZ |
464 | atomic_inc(&priv->adapter->tx_pending); |
465 | ||
466 | if (atomic_read(&priv->adapter->tx_pending) >= MAX_TX_PENDING) { | |
bbea3bc4 AP |
467 | mwifiex_set_trans_start(dev); |
468 | mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter); | |
5e6e3a92 BZ |
469 | } |
470 | ||
471 | queue_work(priv->adapter->workqueue, &priv->adapter->main_work); | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | /* | |
477 | * CFG802.11 network device handler for setting MAC address. | |
478 | */ | |
479 | static int | |
480 | mwifiex_set_mac_address(struct net_device *dev, void *addr) | |
481 | { | |
482 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
a5ffddb7 | 483 | struct sockaddr *hw_addr = addr; |
270e58e8 | 484 | int ret; |
5e6e3a92 BZ |
485 | |
486 | memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN); | |
487 | ||
600f5d90 AK |
488 | /* Send request to firmware */ |
489 | ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_MAC_ADDRESS, | |
490 | HostCmd_ACT_GEN_SET, 0, NULL); | |
491 | ||
492 | if (!ret) | |
493 | memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN); | |
494 | else | |
f57c1edc YAP |
495 | dev_err(priv->adapter->dev, |
496 | "set mac address failed: ret=%d\n", ret); | |
600f5d90 | 497 | |
5e6e3a92 BZ |
498 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
499 | ||
600f5d90 | 500 | return ret; |
5e6e3a92 BZ |
501 | } |
502 | ||
503 | /* | |
504 | * CFG802.11 network device handler for setting multicast list. | |
505 | */ | |
506 | static void mwifiex_set_multicast_list(struct net_device *dev) | |
507 | { | |
508 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
600f5d90 AK |
509 | struct mwifiex_multicast_list mcast_list; |
510 | ||
511 | if (dev->flags & IFF_PROMISC) { | |
512 | mcast_list.mode = MWIFIEX_PROMISC_MODE; | |
513 | } else if (dev->flags & IFF_ALLMULTI || | |
514 | netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { | |
515 | mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; | |
516 | } else { | |
517 | mcast_list.mode = MWIFIEX_MULTICAST_MODE; | |
518 | if (netdev_mc_count(dev)) | |
519 | mcast_list.num_multicast_addr = | |
520 | mwifiex_copy_mcast_addr(&mcast_list, dev); | |
521 | } | |
522 | mwifiex_request_set_multicast_list(priv, &mcast_list); | |
5e6e3a92 BZ |
523 | } |
524 | ||
525 | /* | |
526 | * CFG802.11 network device handler for transmission timeout. | |
527 | */ | |
528 | static void | |
529 | mwifiex_tx_timeout(struct net_device *dev) | |
530 | { | |
531 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
532 | ||
9da9a3b2 | 533 | dev_err(priv->adapter->dev, "%lu : Tx timeout, bss_type-num = %d-%d\n", |
f57c1edc | 534 | jiffies, priv->bss_type, priv->bss_num); |
bbea3bc4 | 535 | mwifiex_set_trans_start(dev); |
5e6e3a92 BZ |
536 | priv->num_tx_timeout++; |
537 | } | |
538 | ||
539 | /* | |
540 | * CFG802.11 network device handler for statistics retrieval. | |
541 | */ | |
542 | static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) | |
543 | { | |
544 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
545 | ||
546 | return &priv->stats; | |
547 | } | |
548 | ||
549 | /* Network device handlers */ | |
550 | static const struct net_device_ops mwifiex_netdev_ops = { | |
551 | .ndo_open = mwifiex_open, | |
552 | .ndo_stop = mwifiex_close, | |
553 | .ndo_start_xmit = mwifiex_hard_start_xmit, | |
554 | .ndo_set_mac_address = mwifiex_set_mac_address, | |
555 | .ndo_tx_timeout = mwifiex_tx_timeout, | |
556 | .ndo_get_stats = mwifiex_get_stats, | |
afc4b13d | 557 | .ndo_set_rx_mode = mwifiex_set_multicast_list, |
5e6e3a92 BZ |
558 | }; |
559 | ||
560 | /* | |
561 | * This function initializes the private structure parameters. | |
562 | * | |
563 | * The following wait queues are initialized - | |
564 | * - IOCTL wait queue | |
565 | * - Command wait queue | |
566 | * - Statistics wait queue | |
567 | * | |
568 | * ...and the following default parameters are set - | |
569 | * - Current key index : Set to 0 | |
570 | * - Rate index : Set to auto | |
571 | * - Media connected : Set to disconnected | |
572 | * - Adhoc link sensed : Set to false | |
573 | * - Nick name : Set to null | |
574 | * - Number of Tx timeout : Set to 0 | |
575 | * - Device address : Set to current address | |
576 | * | |
577 | * In addition, the CFG80211 work queue is also created. | |
578 | */ | |
93a1df48 YAP |
579 | void mwifiex_init_priv_params(struct mwifiex_private *priv, |
580 | struct net_device *dev) | |
5e6e3a92 BZ |
581 | { |
582 | dev->netdev_ops = &mwifiex_netdev_ops; | |
583 | /* Initialize private structure */ | |
5e6e3a92 BZ |
584 | priv->current_key_index = 0; |
585 | priv->media_connected = false; | |
586 | memset(&priv->nick_name, 0, sizeof(priv->nick_name)); | |
587 | priv->num_tx_timeout = 0; | |
5e6e3a92 BZ |
588 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
589 | } | |
590 | ||
5e6e3a92 BZ |
591 | /* |
592 | * This function check if command is pending. | |
593 | */ | |
594 | int is_command_pending(struct mwifiex_adapter *adapter) | |
595 | { | |
596 | unsigned long flags; | |
597 | int is_cmd_pend_q_empty; | |
598 | ||
599 | spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); | |
600 | is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); | |
601 | spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); | |
602 | ||
603 | return !is_cmd_pend_q_empty; | |
604 | } | |
605 | ||
5e6e3a92 BZ |
606 | /* |
607 | * This is the main work queue function. | |
608 | * | |
609 | * It handles the main process, which in turn handles the complete | |
610 | * driver operations. | |
611 | */ | |
612 | static void mwifiex_main_work_queue(struct work_struct *work) | |
613 | { | |
614 | struct mwifiex_adapter *adapter = | |
615 | container_of(work, struct mwifiex_adapter, main_work); | |
616 | ||
617 | if (adapter->surprise_removed) | |
618 | return; | |
619 | mwifiex_main_process(adapter); | |
620 | } | |
621 | ||
622 | /* | |
623 | * This function cancels all works in the queue and destroys | |
624 | * the main workqueue. | |
625 | */ | |
626 | static void | |
627 | mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) | |
628 | { | |
629 | flush_workqueue(adapter->workqueue); | |
630 | destroy_workqueue(adapter->workqueue); | |
631 | adapter->workqueue = NULL; | |
632 | } | |
633 | ||
634 | /* | |
635 | * This function adds the card. | |
636 | * | |
637 | * This function follows the following major steps to set up the device - | |
638 | * - Initialize software. This includes probing the card, registering | |
639 | * the interface operations table, and allocating/initializing the | |
640 | * adapter structure | |
641 | * - Set up the netlink socket | |
642 | * - Create and start the main work queue | |
643 | * - Register the device | |
644 | * - Initialize firmware and hardware | |
645 | * - Add logical interfaces | |
646 | */ | |
647 | int | |
648 | mwifiex_add_card(void *card, struct semaphore *sem, | |
d930faee | 649 | struct mwifiex_if_ops *if_ops, u8 iface_type) |
5e6e3a92 | 650 | { |
2be7859f | 651 | struct mwifiex_adapter *adapter; |
5674fbb7 | 652 | char fmt[64]; |
93a1df48 | 653 | struct mwifiex_private *priv; |
5e6e3a92 BZ |
654 | |
655 | if (down_interruptible(sem)) | |
656 | goto exit_sem_err; | |
657 | ||
93a1df48 | 658 | if (mwifiex_register(card, if_ops, (void **)&adapter)) { |
5e6e3a92 BZ |
659 | pr_err("%s: software init failed\n", __func__); |
660 | goto err_init_sw; | |
661 | } | |
662 | ||
d930faee AK |
663 | adapter->iface_type = iface_type; |
664 | ||
5e6e3a92 | 665 | adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; |
5e6e3a92 BZ |
666 | adapter->surprise_removed = false; |
667 | init_waitqueue_head(&adapter->init_wait_q); | |
668 | adapter->is_suspended = false; | |
669 | adapter->hs_activated = false; | |
670 | init_waitqueue_head(&adapter->hs_activate_wait_q); | |
600f5d90 AK |
671 | adapter->cmd_wait_q_required = false; |
672 | init_waitqueue_head(&adapter->cmd_wait_q.wait); | |
600f5d90 | 673 | adapter->cmd_wait_q.status = 0; |
efaaa8b8 | 674 | adapter->scan_wait_q_woken = false; |
5e6e3a92 | 675 | |
5e6e3a92 BZ |
676 | adapter->workqueue = create_workqueue("MWIFIEX_WORK_QUEUE"); |
677 | if (!adapter->workqueue) | |
678 | goto err_kmalloc; | |
679 | ||
680 | INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); | |
681 | ||
682 | /* Register the device. Fill up the private data structure with relevant | |
683 | information from the card and request for the required IRQ. */ | |
684 | if (adapter->if_ops.register_dev(adapter)) { | |
685 | pr_err("%s: failed to register mwifiex device\n", __func__); | |
686 | goto err_registerdev; | |
687 | } | |
688 | ||
5e6e3a92 BZ |
689 | if (mwifiex_init_hw_fw(adapter)) { |
690 | pr_err("%s: firmware init failed\n", __func__); | |
691 | goto err_init_fw; | |
692 | } | |
2be7859f | 693 | |
93a1df48 YAP |
694 | priv = adapter->priv[0]; |
695 | ||
696 | if (mwifiex_register_cfg80211(priv) != 0) { | |
697 | dev_err(adapter->dev, "cannot register netdevice" | |
698 | " with cfg80211\n"); | |
699 | goto err_init_fw; | |
700 | } | |
701 | ||
702 | rtnl_lock(); | |
703 | /* Create station interface by default */ | |
704 | if (!mwifiex_add_virtual_intf(priv->wdev->wiphy, "mlan%d", | |
f57c1edc | 705 | NL80211_IFTYPE_STATION, NULL, NULL)) { |
93a1df48 YAP |
706 | rtnl_unlock(); |
707 | dev_err(adapter->dev, "cannot create default station" | |
708 | " interface\n"); | |
709 | goto err_add_intf; | |
5e6e3a92 | 710 | } |
5e6e3a92 | 711 | |
93a1df48 YAP |
712 | rtnl_unlock(); |
713 | ||
5e6e3a92 BZ |
714 | up(sem); |
715 | ||
5674fbb7 AK |
716 | mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); |
717 | dev_notice(adapter->dev, "driver_version = %s\n", fmt); | |
718 | ||
5e6e3a92 BZ |
719 | return 0; |
720 | ||
721 | err_add_intf: | |
93a1df48 YAP |
722 | rtnl_lock(); |
723 | mwifiex_del_virtual_intf(priv->wdev->wiphy, priv->netdev); | |
724 | rtnl_unlock(); | |
5e6e3a92 | 725 | err_init_fw: |
5e6e3a92 BZ |
726 | pr_debug("info: %s: unregister device\n", __func__); |
727 | adapter->if_ops.unregister_dev(adapter); | |
728 | err_registerdev: | |
729 | adapter->surprise_removed = true; | |
730 | mwifiex_terminate_workqueue(adapter); | |
731 | err_kmalloc: | |
732 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_FW_READY) || | |
733 | (adapter->hw_status == MWIFIEX_HW_STATUS_READY)) { | |
734 | pr_debug("info: %s: shutdown mwifiex\n", __func__); | |
735 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
736 | |
737 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
738 | wait_event_interruptible(adapter->init_wait_q, |
739 | adapter->init_wait_q_woken); | |
740 | } | |
741 | ||
742 | mwifiex_free_adapter(adapter); | |
743 | ||
744 | err_init_sw: | |
745 | up(sem); | |
746 | ||
747 | exit_sem_err: | |
748 | return -1; | |
749 | } | |
750 | EXPORT_SYMBOL_GPL(mwifiex_add_card); | |
751 | ||
752 | /* | |
753 | * This function removes the card. | |
754 | * | |
755 | * This function follows the following major steps to remove the device - | |
756 | * - Stop data traffic | |
757 | * - Shutdown firmware | |
758 | * - Remove the logical interfaces | |
759 | * - Terminate the work queue | |
760 | * - Unregister the device | |
761 | * - Free the adapter structure | |
762 | */ | |
763 | int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) | |
764 | { | |
765 | struct mwifiex_private *priv = NULL; | |
5e6e3a92 BZ |
766 | int i; |
767 | ||
768 | if (down_interruptible(sem)) | |
769 | goto exit_sem_err; | |
770 | ||
771 | if (!adapter) | |
772 | goto exit_remove; | |
773 | ||
774 | adapter->surprise_removed = true; | |
775 | ||
776 | /* Stop data */ | |
777 | for (i = 0; i < adapter->priv_num; i++) { | |
778 | priv = adapter->priv[i]; | |
93a1df48 | 779 | if (priv && priv->netdev) { |
5e6e3a92 | 780 | if (!netif_queue_stopped(priv->netdev)) |
bbea3bc4 | 781 | mwifiex_stop_net_dev_queue(priv->netdev, |
f57c1edc | 782 | adapter); |
5e6e3a92 BZ |
783 | if (netif_carrier_ok(priv->netdev)) |
784 | netif_carrier_off(priv->netdev); | |
785 | } | |
786 | } | |
787 | ||
788 | dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n"); | |
789 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
790 | |
791 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
792 | wait_event_interruptible(adapter->init_wait_q, |
793 | adapter->init_wait_q_woken); | |
794 | dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n"); | |
795 | if (atomic_read(&adapter->rx_pending) || | |
796 | atomic_read(&adapter->tx_pending) || | |
600f5d90 | 797 | atomic_read(&adapter->cmd_pending)) { |
5e6e3a92 | 798 | dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, " |
600f5d90 | 799 | "cmd_pending=%d\n", |
5e6e3a92 BZ |
800 | atomic_read(&adapter->rx_pending), |
801 | atomic_read(&adapter->tx_pending), | |
600f5d90 | 802 | atomic_read(&adapter->cmd_pending)); |
5e6e3a92 BZ |
803 | } |
804 | ||
93a1df48 YAP |
805 | for (i = 0; i < adapter->priv_num; i++) { |
806 | priv = adapter->priv[i]; | |
807 | ||
808 | if (!priv) | |
809 | continue; | |
810 | ||
811 | rtnl_lock(); | |
2da8cbf8 AK |
812 | if (priv->wdev && priv->netdev) |
813 | mwifiex_del_virtual_intf(priv->wdev->wiphy, | |
814 | priv->netdev); | |
93a1df48 YAP |
815 | rtnl_unlock(); |
816 | } | |
817 | ||
3d82de0f YAP |
818 | priv = adapter->priv[0]; |
819 | if (!priv) | |
820 | goto exit_remove; | |
821 | ||
2da8cbf8 AK |
822 | if (priv->wdev) { |
823 | wiphy_unregister(priv->wdev->wiphy); | |
824 | wiphy_free(priv->wdev->wiphy); | |
825 | kfree(priv->wdev); | |
826 | } | |
5e6e3a92 BZ |
827 | |
828 | mwifiex_terminate_workqueue(adapter); | |
829 | ||
830 | /* Unregister device */ | |
831 | dev_dbg(adapter->dev, "info: unregister device\n"); | |
832 | adapter->if_ops.unregister_dev(adapter); | |
833 | /* Free adapter structure */ | |
834 | dev_dbg(adapter->dev, "info: free adapter\n"); | |
835 | mwifiex_free_adapter(adapter); | |
836 | ||
837 | exit_remove: | |
838 | up(sem); | |
839 | exit_sem_err: | |
840 | return 0; | |
841 | } | |
842 | EXPORT_SYMBOL_GPL(mwifiex_remove_card); | |
843 | ||
844 | /* | |
845 | * This function initializes the module. | |
846 | * | |
847 | * The debug FS is also initialized if configured. | |
848 | */ | |
849 | static int | |
850 | mwifiex_init_module(void) | |
851 | { | |
852 | #ifdef CONFIG_DEBUG_FS | |
853 | mwifiex_debugfs_init(); | |
854 | #endif | |
855 | return 0; | |
856 | } | |
857 | ||
858 | /* | |
859 | * This function cleans up the module. | |
860 | * | |
861 | * The debug FS is removed if available. | |
862 | */ | |
863 | static void | |
864 | mwifiex_cleanup_module(void) | |
865 | { | |
866 | #ifdef CONFIG_DEBUG_FS | |
867 | mwifiex_debugfs_remove(); | |
868 | #endif | |
869 | } | |
870 | ||
871 | module_init(mwifiex_init_module); | |
872 | module_exit(mwifiex_cleanup_module); | |
873 | ||
874 | MODULE_AUTHOR("Marvell International Ltd."); | |
875 | MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); | |
876 | MODULE_VERSION(VERSION); | |
877 | MODULE_LICENSE("GPL v2"); |