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