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 .. */ | |
4daffe35 AK |
61 | if (adapter->if_ops.init_if) |
62 | if (adapter->if_ops.init_if(adapter)) | |
63 | goto error; | |
5e6e3a92 BZ |
64 | |
65 | adapter->priv_num = 0; | |
5e6e3a92 | 66 | |
64b05e2f AP |
67 | for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) { |
68 | /* Allocate memory for private structure */ | |
69 | adapter->priv[i] = | |
70 | kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL); | |
71 | if (!adapter->priv[i]) | |
72 | goto error; | |
93a1df48 | 73 | |
64b05e2f | 74 | adapter->priv[i]->adapter = adapter; |
64b05e2f AP |
75 | adapter->priv_num++; |
76 | } | |
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; | |
4daffe35 | 143 | struct sk_buff *skb; |
5e6e3a92 BZ |
144 | |
145 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | |
146 | ||
147 | /* Check if already processing */ | |
148 | if (adapter->mwifiex_processing) { | |
149 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
150 | goto exit_main_proc; | |
151 | } else { | |
152 | adapter->mwifiex_processing = true; | |
153 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
154 | } | |
155 | process_start: | |
156 | do { | |
157 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) || | |
158 | (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)) | |
159 | break; | |
160 | ||
161 | /* Handle pending interrupt if any */ | |
162 | if (adapter->int_status) { | |
163 | if (adapter->hs_activated) | |
164 | mwifiex_process_hs_config(adapter); | |
4daffe35 AK |
165 | if (adapter->if_ops.process_int_status) |
166 | adapter->if_ops.process_int_status(adapter); | |
5e6e3a92 BZ |
167 | } |
168 | ||
169 | /* Need to wake up the card ? */ | |
170 | if ((adapter->ps_state == PS_STATE_SLEEP) && | |
171 | (adapter->pm_wakeup_card_req && | |
172 | !adapter->pm_wakeup_fw_try) && | |
f57c1edc YAP |
173 | (is_command_pending(adapter) || |
174 | !mwifiex_wmm_lists_empty(adapter))) { | |
5e6e3a92 BZ |
175 | adapter->pm_wakeup_fw_try = true; |
176 | adapter->if_ops.wakeup(adapter); | |
177 | continue; | |
178 | } | |
4daffe35 | 179 | |
5e6e3a92 BZ |
180 | if (IS_CARD_RX_RCVD(adapter)) { |
181 | adapter->pm_wakeup_fw_try = false; | |
182 | if (adapter->ps_state == PS_STATE_SLEEP) | |
183 | adapter->ps_state = PS_STATE_AWAKE; | |
184 | } else { | |
185 | /* We have tried to wakeup the card already */ | |
186 | if (adapter->pm_wakeup_fw_try) | |
187 | break; | |
188 | if (adapter->ps_state != PS_STATE_AWAKE || | |
189 | adapter->tx_lock_flag) | |
190 | break; | |
191 | ||
f931c770 AK |
192 | if ((adapter->scan_processing && |
193 | !adapter->scan_delay_cnt) || adapter->data_sent || | |
f57c1edc YAP |
194 | mwifiex_wmm_lists_empty(adapter)) { |
195 | if (adapter->cmd_sent || adapter->curr_cmd || | |
196 | (!is_command_pending(adapter))) | |
5e6e3a92 BZ |
197 | break; |
198 | } | |
199 | } | |
200 | ||
4daffe35 AK |
201 | /* Check Rx data for USB */ |
202 | if (adapter->iface_type == MWIFIEX_USB) | |
203 | while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) | |
204 | mwifiex_handle_rx_packet(adapter, skb); | |
205 | ||
5e6e3a92 BZ |
206 | /* Check for Cmd Resp */ |
207 | if (adapter->cmd_resp_received) { | |
208 | adapter->cmd_resp_received = false; | |
209 | mwifiex_process_cmdresp(adapter); | |
210 | ||
211 | /* call mwifiex back when init_fw is done */ | |
212 | if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) { | |
213 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | |
214 | mwifiex_init_fw_complete(adapter); | |
215 | } | |
216 | } | |
217 | ||
218 | /* Check for event */ | |
219 | if (adapter->event_received) { | |
220 | adapter->event_received = false; | |
221 | mwifiex_process_event(adapter); | |
222 | } | |
223 | ||
224 | /* Check if we need to confirm Sleep Request | |
225 | received previously */ | |
226 | if (adapter->ps_state == PS_STATE_PRE_SLEEP) { | |
227 | if (!adapter->cmd_sent && !adapter->curr_cmd) | |
228 | mwifiex_check_ps_cond(adapter); | |
229 | } | |
230 | ||
231 | /* * The ps_state may have been changed during processing of | |
232 | * Sleep Request event. | |
233 | */ | |
f57c1edc YAP |
234 | if ((adapter->ps_state == PS_STATE_SLEEP) || |
235 | (adapter->ps_state == PS_STATE_PRE_SLEEP) || | |
236 | (adapter->ps_state == PS_STATE_SLEEP_CFM) || | |
237 | adapter->tx_lock_flag) | |
5e6e3a92 BZ |
238 | continue; |
239 | ||
240 | if (!adapter->cmd_sent && !adapter->curr_cmd) { | |
241 | if (mwifiex_exec_next_cmd(adapter) == -1) { | |
242 | ret = -1; | |
243 | break; | |
244 | } | |
245 | } | |
246 | ||
3249ba73 AK |
247 | if ((!adapter->scan_processing || adapter->scan_delay_cnt) && |
248 | !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter)) { | |
5e6e3a92 BZ |
249 | mwifiex_wmm_process_tx(adapter); |
250 | if (adapter->hs_activated) { | |
251 | adapter->is_hs_configured = false; | |
252 | mwifiex_hs_activated_event | |
253 | (mwifiex_get_priv | |
254 | (adapter, MWIFIEX_BSS_ROLE_ANY), | |
255 | false); | |
256 | } | |
257 | } | |
258 | ||
259 | if (adapter->delay_null_pkt && !adapter->cmd_sent && | |
f57c1edc YAP |
260 | !adapter->curr_cmd && !is_command_pending(adapter) && |
261 | mwifiex_wmm_lists_empty(adapter)) { | |
5e6e3a92 BZ |
262 | if (!mwifiex_send_null_packet |
263 | (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), | |
264 | MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | | |
265 | MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) { | |
266 | adapter->delay_null_pkt = false; | |
267 | adapter->ps_state = PS_STATE_SLEEP; | |
268 | } | |
269 | break; | |
270 | } | |
271 | } while (true); | |
272 | ||
273 | if ((adapter->int_status) || IS_CARD_RX_RCVD(adapter)) | |
274 | goto process_start; | |
275 | ||
276 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | |
277 | adapter->mwifiex_processing = false; | |
278 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
279 | ||
280 | exit_main_proc: | |
281 | if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) | |
282 | mwifiex_shutdown_drv(adapter); | |
283 | return ret; | |
284 | } | |
285 | ||
5e6e3a92 BZ |
286 | /* |
287 | * This function frees the adapter structure. | |
288 | * | |
289 | * Additionally, this closes the netlink socket, frees the timers | |
290 | * and private structures. | |
291 | */ | |
292 | static void mwifiex_free_adapter(struct mwifiex_adapter *adapter) | |
293 | { | |
294 | if (!adapter) { | |
295 | pr_err("%s: adapter is NULL\n", __func__); | |
296 | return; | |
297 | } | |
298 | ||
299 | mwifiex_unregister(adapter); | |
300 | pr_debug("info: %s: free adapter\n", __func__); | |
301 | } | |
302 | ||
303 | /* | |
59a4cc25 | 304 | * This function gets firmware and initializes it. |
5e6e3a92 BZ |
305 | * |
306 | * The main initialization steps followed are - | |
307 | * - Download the correct firmware to card | |
5e6e3a92 BZ |
308 | * - Issue the init commands to firmware |
309 | */ | |
59a4cc25 | 310 | static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) |
5e6e3a92 | 311 | { |
59a4cc25 AK |
312 | int ret; |
313 | char fmt[64]; | |
314 | struct mwifiex_private *priv; | |
315 | struct mwifiex_adapter *adapter = context; | |
5e6e3a92 BZ |
316 | struct mwifiex_fw_image fw; |
317 | ||
59a4cc25 AK |
318 | if (!firmware) { |
319 | dev_err(adapter->dev, | |
320 | "Failed to get firmware %s\n", adapter->fw_name); | |
5e6e3a92 BZ |
321 | goto done; |
322 | } | |
59a4cc25 AK |
323 | |
324 | memset(&fw, 0, sizeof(struct mwifiex_fw_image)); | |
325 | adapter->firmware = firmware; | |
5e6e3a92 BZ |
326 | fw.fw_buf = (u8 *) adapter->firmware->data; |
327 | fw.fw_len = adapter->firmware->size; | |
328 | ||
4daffe35 AK |
329 | if (adapter->if_ops.dnld_fw) |
330 | ret = adapter->if_ops.dnld_fw(adapter, &fw); | |
331 | else | |
332 | ret = mwifiex_dnld_fw(adapter, &fw); | |
5e6e3a92 BZ |
333 | if (ret == -1) |
334 | goto done; | |
335 | ||
336 | dev_notice(adapter->dev, "WLAN FW is active\n"); | |
337 | ||
338 | adapter->init_wait_q_woken = false; | |
339 | ret = mwifiex_init_fw(adapter); | |
340 | if (ret == -1) { | |
341 | goto done; | |
342 | } else if (!ret) { | |
343 | adapter->hw_status = MWIFIEX_HW_STATUS_READY; | |
344 | goto done; | |
345 | } | |
346 | /* Wait for mwifiex_init to complete */ | |
347 | wait_event_interruptible(adapter->init_wait_q, | |
348 | adapter->init_wait_q_woken); | |
59a4cc25 | 349 | if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) |
5e6e3a92 | 350 | goto done; |
59a4cc25 | 351 | |
d6bffe8b AP |
352 | priv = adapter->priv[MWIFIEX_BSS_ROLE_STA]; |
353 | if (mwifiex_register_cfg80211(adapter)) { | |
59a4cc25 AK |
354 | dev_err(adapter->dev, "cannot register with cfg80211\n"); |
355 | goto err_init_fw; | |
356 | } | |
357 | ||
358 | rtnl_lock(); | |
359 | /* Create station interface by default */ | |
d6bffe8b | 360 | if (!mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", |
59a4cc25 AK |
361 | NL80211_IFTYPE_STATION, NULL, NULL)) { |
362 | dev_err(adapter->dev, "cannot create default STA interface\n"); | |
363 | goto err_add_intf; | |
5e6e3a92 | 364 | } |
d6bffe8b AP |
365 | |
366 | /* Create AP interface by default */ | |
367 | if (!mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", | |
368 | NL80211_IFTYPE_AP, NULL, NULL)) { | |
369 | dev_err(adapter->dev, "cannot create default AP interface\n"); | |
370 | goto err_add_intf; | |
371 | } | |
59a4cc25 AK |
372 | rtnl_unlock(); |
373 | ||
374 | mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); | |
375 | dev_notice(adapter->dev, "driver_version = %s\n", fmt); | |
376 | goto done; | |
5e6e3a92 | 377 | |
59a4cc25 | 378 | err_add_intf: |
84efbb84 | 379 | mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev); |
59a4cc25 AK |
380 | rtnl_unlock(); |
381 | err_init_fw: | |
382 | pr_debug("info: %s: unregister device\n", __func__); | |
383 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 | 384 | done: |
4fb25c59 | 385 | release_firmware(adapter->firmware); |
59a4cc25 AK |
386 | complete(&adapter->fw_load); |
387 | return; | |
388 | } | |
389 | ||
390 | /* | |
391 | * This function initializes the hardware and gets firmware. | |
392 | */ | |
393 | static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter) | |
394 | { | |
395 | int ret; | |
396 | ||
397 | init_completion(&adapter->fw_load); | |
398 | ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, | |
399 | adapter->dev, GFP_KERNEL, adapter, | |
400 | mwifiex_fw_dpc); | |
401 | if (ret < 0) | |
402 | dev_err(adapter->dev, | |
403 | "request_firmware_nowait() returned error %d\n", ret); | |
5e6e3a92 BZ |
404 | return ret; |
405 | } | |
406 | ||
407 | /* | |
408 | * This function fills a driver buffer. | |
409 | * | |
410 | * The function associates a given SKB with the provided driver buffer | |
411 | * and also updates some of the SKB parameters, including IP header, | |
412 | * priority and timestamp. | |
413 | */ | |
414 | static void | |
415 | mwifiex_fill_buffer(struct sk_buff *skb) | |
416 | { | |
270e58e8 | 417 | struct ethhdr *eth; |
5e6e3a92 BZ |
418 | struct iphdr *iph; |
419 | struct timeval tv; | |
420 | u8 tid = 0; | |
421 | ||
422 | eth = (struct ethhdr *) skb->data; | |
423 | switch (eth->h_proto) { | |
424 | case __constant_htons(ETH_P_IP): | |
425 | iph = ip_hdr(skb); | |
426 | tid = IPTOS_PREC(iph->tos); | |
427 | pr_debug("data: packet type ETH_P_IP: %04x, tid=%#x prio=%#x\n", | |
f57c1edc | 428 | eth->h_proto, tid, skb->priority); |
5e6e3a92 BZ |
429 | break; |
430 | case __constant_htons(ETH_P_ARP): | |
431 | pr_debug("data: ARP packet: %04x\n", eth->h_proto); | |
432 | default: | |
433 | break; | |
434 | } | |
435 | /* Offset for TOS field in the IP header */ | |
436 | #define IPTOS_OFFSET 5 | |
437 | tid = (tid >> IPTOS_OFFSET); | |
438 | skb->priority = tid; | |
439 | /* Record the current time the packet was queued; used to | |
440 | determine the amount of time the packet was queued in | |
441 | the driver before it was sent to the firmware. | |
442 | The delay is then sent along with the packet to the | |
443 | firmware for aggregate delay calculation for stats and | |
444 | MSDU lifetime expiry. | |
445 | */ | |
446 | do_gettimeofday(&tv); | |
447 | skb->tstamp = timeval_to_ktime(tv); | |
5e6e3a92 BZ |
448 | } |
449 | ||
450 | /* | |
451 | * CFG802.11 network device handler for open. | |
452 | * | |
453 | * Starts the data queue. | |
454 | */ | |
455 | static int | |
456 | mwifiex_open(struct net_device *dev) | |
457 | { | |
bbea3bc4 | 458 | netif_tx_start_all_queues(dev); |
5e6e3a92 BZ |
459 | return 0; |
460 | } | |
461 | ||
462 | /* | |
463 | * CFG802.11 network device handler for close. | |
464 | */ | |
465 | static int | |
466 | mwifiex_close(struct net_device *dev) | |
467 | { | |
468 | return 0; | |
469 | } | |
470 | ||
e39faa73 SP |
471 | /* |
472 | * Add buffer into wmm tx queue and queue work to transmit it. | |
473 | */ | |
474 | int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb) | |
475 | { | |
476 | mwifiex_wmm_add_buf_txqueue(priv, skb); | |
477 | atomic_inc(&priv->adapter->tx_pending); | |
478 | ||
479 | if (priv->adapter->scan_delay_cnt) | |
480 | atomic_set(&priv->adapter->is_tx_received, true); | |
481 | ||
482 | if (atomic_read(&priv->adapter->tx_pending) >= MAX_TX_PENDING) { | |
483 | mwifiex_set_trans_start(priv->netdev); | |
484 | mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter); | |
485 | } | |
486 | ||
487 | queue_work(priv->adapter->workqueue, &priv->adapter->main_work); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
5e6e3a92 BZ |
492 | /* |
493 | * CFG802.11 network device handler for data transmission. | |
494 | */ | |
495 | static int | |
496 | mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
497 | { | |
498 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
270e58e8 | 499 | struct sk_buff *new_skb; |
5e6e3a92 BZ |
500 | struct mwifiex_txinfo *tx_info; |
501 | ||
9da9a3b2 | 502 | dev_dbg(priv->adapter->dev, "data: %lu BSS(%d-%d): Data <= kernel\n", |
f57c1edc | 503 | jiffies, priv->bss_type, priv->bss_num); |
5e6e3a92 BZ |
504 | |
505 | if (priv->adapter->surprise_removed) { | |
b53575ec | 506 | kfree_skb(skb); |
5e6e3a92 BZ |
507 | priv->stats.tx_dropped++; |
508 | return 0; | |
509 | } | |
510 | if (!skb->len || (skb->len > ETH_FRAME_LEN)) { | |
511 | dev_err(priv->adapter->dev, "Tx: bad skb len %d\n", skb->len); | |
b53575ec | 512 | kfree_skb(skb); |
5e6e3a92 BZ |
513 | priv->stats.tx_dropped++; |
514 | return 0; | |
515 | } | |
516 | if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { | |
517 | dev_dbg(priv->adapter->dev, | |
518 | "data: Tx: insufficient skb headroom %d\n", | |
f57c1edc | 519 | skb_headroom(skb)); |
5e6e3a92 BZ |
520 | /* Insufficient skb headroom - allocate a new skb */ |
521 | new_skb = | |
522 | skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); | |
523 | if (unlikely(!new_skb)) { | |
524 | dev_err(priv->adapter->dev, "Tx: cannot alloca new_skb\n"); | |
b53575ec | 525 | kfree_skb(skb); |
5e6e3a92 BZ |
526 | priv->stats.tx_dropped++; |
527 | return 0; | |
528 | } | |
529 | kfree_skb(skb); | |
530 | skb = new_skb; | |
531 | dev_dbg(priv->adapter->dev, "info: new skb headroomd %d\n", | |
f57c1edc | 532 | skb_headroom(skb)); |
5e6e3a92 BZ |
533 | } |
534 | ||
535 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
9da9a3b2 YAP |
536 | tx_info->bss_num = priv->bss_num; |
537 | tx_info->bss_type = priv->bss_type; | |
5e6e3a92 BZ |
538 | mwifiex_fill_buffer(skb); |
539 | ||
e39faa73 | 540 | mwifiex_queue_tx_pkt(priv, skb); |
5e6e3a92 BZ |
541 | |
542 | return 0; | |
543 | } | |
544 | ||
545 | /* | |
546 | * CFG802.11 network device handler for setting MAC address. | |
547 | */ | |
548 | static int | |
549 | mwifiex_set_mac_address(struct net_device *dev, void *addr) | |
550 | { | |
551 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
a5ffddb7 | 552 | struct sockaddr *hw_addr = addr; |
270e58e8 | 553 | int ret; |
5e6e3a92 BZ |
554 | |
555 | memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN); | |
556 | ||
600f5d90 AK |
557 | /* Send request to firmware */ |
558 | ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_MAC_ADDRESS, | |
559 | HostCmd_ACT_GEN_SET, 0, NULL); | |
560 | ||
561 | if (!ret) | |
562 | memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN); | |
563 | else | |
f57c1edc YAP |
564 | dev_err(priv->adapter->dev, |
565 | "set mac address failed: ret=%d\n", ret); | |
600f5d90 | 566 | |
5e6e3a92 BZ |
567 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
568 | ||
600f5d90 | 569 | return ret; |
5e6e3a92 BZ |
570 | } |
571 | ||
572 | /* | |
573 | * CFG802.11 network device handler for setting multicast list. | |
574 | */ | |
575 | static void mwifiex_set_multicast_list(struct net_device *dev) | |
576 | { | |
577 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
600f5d90 AK |
578 | struct mwifiex_multicast_list mcast_list; |
579 | ||
580 | if (dev->flags & IFF_PROMISC) { | |
581 | mcast_list.mode = MWIFIEX_PROMISC_MODE; | |
582 | } else if (dev->flags & IFF_ALLMULTI || | |
583 | netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { | |
584 | mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; | |
585 | } else { | |
586 | mcast_list.mode = MWIFIEX_MULTICAST_MODE; | |
587 | if (netdev_mc_count(dev)) | |
588 | mcast_list.num_multicast_addr = | |
589 | mwifiex_copy_mcast_addr(&mcast_list, dev); | |
590 | } | |
591 | mwifiex_request_set_multicast_list(priv, &mcast_list); | |
5e6e3a92 BZ |
592 | } |
593 | ||
594 | /* | |
595 | * CFG802.11 network device handler for transmission timeout. | |
596 | */ | |
597 | static void | |
598 | mwifiex_tx_timeout(struct net_device *dev) | |
599 | { | |
600 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
601 | ||
9da9a3b2 | 602 | dev_err(priv->adapter->dev, "%lu : Tx timeout, bss_type-num = %d-%d\n", |
f57c1edc | 603 | jiffies, priv->bss_type, priv->bss_num); |
bbea3bc4 | 604 | mwifiex_set_trans_start(dev); |
5e6e3a92 BZ |
605 | priv->num_tx_timeout++; |
606 | } | |
607 | ||
608 | /* | |
609 | * CFG802.11 network device handler for statistics retrieval. | |
610 | */ | |
611 | static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) | |
612 | { | |
613 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
614 | ||
615 | return &priv->stats; | |
616 | } | |
617 | ||
618 | /* Network device handlers */ | |
619 | static const struct net_device_ops mwifiex_netdev_ops = { | |
620 | .ndo_open = mwifiex_open, | |
621 | .ndo_stop = mwifiex_close, | |
622 | .ndo_start_xmit = mwifiex_hard_start_xmit, | |
623 | .ndo_set_mac_address = mwifiex_set_mac_address, | |
624 | .ndo_tx_timeout = mwifiex_tx_timeout, | |
625 | .ndo_get_stats = mwifiex_get_stats, | |
afc4b13d | 626 | .ndo_set_rx_mode = mwifiex_set_multicast_list, |
5e6e3a92 BZ |
627 | }; |
628 | ||
629 | /* | |
630 | * This function initializes the private structure parameters. | |
631 | * | |
632 | * The following wait queues are initialized - | |
633 | * - IOCTL wait queue | |
634 | * - Command wait queue | |
635 | * - Statistics wait queue | |
636 | * | |
637 | * ...and the following default parameters are set - | |
638 | * - Current key index : Set to 0 | |
639 | * - Rate index : Set to auto | |
640 | * - Media connected : Set to disconnected | |
641 | * - Adhoc link sensed : Set to false | |
642 | * - Nick name : Set to null | |
643 | * - Number of Tx timeout : Set to 0 | |
644 | * - Device address : Set to current address | |
645 | * | |
646 | * In addition, the CFG80211 work queue is also created. | |
647 | */ | |
93a1df48 YAP |
648 | void mwifiex_init_priv_params(struct mwifiex_private *priv, |
649 | struct net_device *dev) | |
5e6e3a92 BZ |
650 | { |
651 | dev->netdev_ops = &mwifiex_netdev_ops; | |
652 | /* Initialize private structure */ | |
5e6e3a92 BZ |
653 | priv->current_key_index = 0; |
654 | priv->media_connected = false; | |
655 | memset(&priv->nick_name, 0, sizeof(priv->nick_name)); | |
ede98bfa AP |
656 | memset(priv->mgmt_ie, 0, |
657 | sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX); | |
f31acabe AP |
658 | priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK; |
659 | priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK; | |
660 | priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK; | |
661 | priv->rsn_idx = MWIFIEX_AUTO_IDX_MASK; | |
5e6e3a92 | 662 | priv->num_tx_timeout = 0; |
5e6e3a92 BZ |
663 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
664 | } | |
665 | ||
5e6e3a92 BZ |
666 | /* |
667 | * This function check if command is pending. | |
668 | */ | |
669 | int is_command_pending(struct mwifiex_adapter *adapter) | |
670 | { | |
671 | unsigned long flags; | |
672 | int is_cmd_pend_q_empty; | |
673 | ||
674 | spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); | |
675 | is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); | |
676 | spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); | |
677 | ||
678 | return !is_cmd_pend_q_empty; | |
679 | } | |
680 | ||
5e6e3a92 BZ |
681 | /* |
682 | * This is the main work queue function. | |
683 | * | |
684 | * It handles the main process, which in turn handles the complete | |
685 | * driver operations. | |
686 | */ | |
687 | static void mwifiex_main_work_queue(struct work_struct *work) | |
688 | { | |
689 | struct mwifiex_adapter *adapter = | |
690 | container_of(work, struct mwifiex_adapter, main_work); | |
691 | ||
692 | if (adapter->surprise_removed) | |
693 | return; | |
694 | mwifiex_main_process(adapter); | |
695 | } | |
696 | ||
697 | /* | |
698 | * This function cancels all works in the queue and destroys | |
699 | * the main workqueue. | |
700 | */ | |
701 | static void | |
702 | mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) | |
703 | { | |
704 | flush_workqueue(adapter->workqueue); | |
705 | destroy_workqueue(adapter->workqueue); | |
706 | adapter->workqueue = NULL; | |
707 | } | |
708 | ||
709 | /* | |
710 | * This function adds the card. | |
711 | * | |
712 | * This function follows the following major steps to set up the device - | |
713 | * - Initialize software. This includes probing the card, registering | |
714 | * the interface operations table, and allocating/initializing the | |
715 | * adapter structure | |
716 | * - Set up the netlink socket | |
717 | * - Create and start the main work queue | |
718 | * - Register the device | |
719 | * - Initialize firmware and hardware | |
720 | * - Add logical interfaces | |
721 | */ | |
722 | int | |
723 | mwifiex_add_card(void *card, struct semaphore *sem, | |
d930faee | 724 | struct mwifiex_if_ops *if_ops, u8 iface_type) |
5e6e3a92 | 725 | { |
2be7859f | 726 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
727 | |
728 | if (down_interruptible(sem)) | |
729 | goto exit_sem_err; | |
730 | ||
93a1df48 | 731 | if (mwifiex_register(card, if_ops, (void **)&adapter)) { |
5e6e3a92 BZ |
732 | pr_err("%s: software init failed\n", __func__); |
733 | goto err_init_sw; | |
734 | } | |
735 | ||
d930faee AK |
736 | adapter->iface_type = iface_type; |
737 | ||
5e6e3a92 | 738 | adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; |
5e6e3a92 BZ |
739 | adapter->surprise_removed = false; |
740 | init_waitqueue_head(&adapter->init_wait_q); | |
741 | adapter->is_suspended = false; | |
742 | adapter->hs_activated = false; | |
743 | init_waitqueue_head(&adapter->hs_activate_wait_q); | |
600f5d90 AK |
744 | adapter->cmd_wait_q_required = false; |
745 | init_waitqueue_head(&adapter->cmd_wait_q.wait); | |
600f5d90 | 746 | adapter->cmd_wait_q.status = 0; |
efaaa8b8 | 747 | adapter->scan_wait_q_woken = false; |
5e6e3a92 | 748 | |
5e6e3a92 BZ |
749 | adapter->workqueue = create_workqueue("MWIFIEX_WORK_QUEUE"); |
750 | if (!adapter->workqueue) | |
751 | goto err_kmalloc; | |
752 | ||
753 | INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); | |
754 | ||
755 | /* Register the device. Fill up the private data structure with relevant | |
756 | information from the card and request for the required IRQ. */ | |
757 | if (adapter->if_ops.register_dev(adapter)) { | |
758 | pr_err("%s: failed to register mwifiex device\n", __func__); | |
759 | goto err_registerdev; | |
760 | } | |
761 | ||
5e6e3a92 BZ |
762 | if (mwifiex_init_hw_fw(adapter)) { |
763 | pr_err("%s: firmware init failed\n", __func__); | |
764 | goto err_init_fw; | |
765 | } | |
2be7859f | 766 | |
5e6e3a92 | 767 | up(sem); |
5e6e3a92 BZ |
768 | return 0; |
769 | ||
5e6e3a92 | 770 | err_init_fw: |
5e6e3a92 | 771 | pr_debug("info: %s: unregister device\n", __func__); |
4daffe35 AK |
772 | if (adapter->if_ops.unregister_dev) |
773 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 BZ |
774 | err_registerdev: |
775 | adapter->surprise_removed = true; | |
776 | mwifiex_terminate_workqueue(adapter); | |
777 | err_kmalloc: | |
778 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_FW_READY) || | |
779 | (adapter->hw_status == MWIFIEX_HW_STATUS_READY)) { | |
780 | pr_debug("info: %s: shutdown mwifiex\n", __func__); | |
781 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
782 | |
783 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
784 | wait_event_interruptible(adapter->init_wait_q, |
785 | adapter->init_wait_q_woken); | |
786 | } | |
787 | ||
788 | mwifiex_free_adapter(adapter); | |
789 | ||
790 | err_init_sw: | |
791 | up(sem); | |
792 | ||
793 | exit_sem_err: | |
794 | return -1; | |
795 | } | |
796 | EXPORT_SYMBOL_GPL(mwifiex_add_card); | |
797 | ||
798 | /* | |
799 | * This function removes the card. | |
800 | * | |
801 | * This function follows the following major steps to remove the device - | |
802 | * - Stop data traffic | |
803 | * - Shutdown firmware | |
804 | * - Remove the logical interfaces | |
805 | * - Terminate the work queue | |
806 | * - Unregister the device | |
807 | * - Free the adapter structure | |
808 | */ | |
809 | int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) | |
810 | { | |
811 | struct mwifiex_private *priv = NULL; | |
5e6e3a92 BZ |
812 | int i; |
813 | ||
814 | if (down_interruptible(sem)) | |
815 | goto exit_sem_err; | |
816 | ||
817 | if (!adapter) | |
818 | goto exit_remove; | |
819 | ||
820 | adapter->surprise_removed = true; | |
821 | ||
822 | /* Stop data */ | |
823 | for (i = 0; i < adapter->priv_num; i++) { | |
824 | priv = adapter->priv[i]; | |
93a1df48 | 825 | if (priv && priv->netdev) { |
5e6e3a92 | 826 | if (!netif_queue_stopped(priv->netdev)) |
bbea3bc4 | 827 | mwifiex_stop_net_dev_queue(priv->netdev, |
f57c1edc | 828 | adapter); |
5e6e3a92 BZ |
829 | if (netif_carrier_ok(priv->netdev)) |
830 | netif_carrier_off(priv->netdev); | |
831 | } | |
832 | } | |
833 | ||
834 | dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n"); | |
835 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
836 | |
837 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
838 | wait_event_interruptible(adapter->init_wait_q, |
839 | adapter->init_wait_q_woken); | |
840 | dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n"); | |
841 | if (atomic_read(&adapter->rx_pending) || | |
842 | atomic_read(&adapter->tx_pending) || | |
600f5d90 | 843 | atomic_read(&adapter->cmd_pending)) { |
5e6e3a92 | 844 | dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, " |
600f5d90 | 845 | "cmd_pending=%d\n", |
5e6e3a92 BZ |
846 | atomic_read(&adapter->rx_pending), |
847 | atomic_read(&adapter->tx_pending), | |
600f5d90 | 848 | atomic_read(&adapter->cmd_pending)); |
5e6e3a92 BZ |
849 | } |
850 | ||
93a1df48 YAP |
851 | for (i = 0; i < adapter->priv_num; i++) { |
852 | priv = adapter->priv[i]; | |
853 | ||
854 | if (!priv) | |
855 | continue; | |
856 | ||
857 | rtnl_lock(); | |
2da8cbf8 | 858 | if (priv->wdev && priv->netdev) |
84efbb84 | 859 | mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev); |
93a1df48 YAP |
860 | rtnl_unlock(); |
861 | } | |
862 | ||
3d82de0f | 863 | priv = adapter->priv[0]; |
64b05e2f | 864 | if (!priv || !priv->wdev) |
3d82de0f YAP |
865 | goto exit_remove; |
866 | ||
64b05e2f AP |
867 | wiphy_unregister(priv->wdev->wiphy); |
868 | wiphy_free(priv->wdev->wiphy); | |
869 | ||
870 | for (i = 0; i < adapter->priv_num; i++) { | |
871 | priv = adapter->priv[i]; | |
872 | if (priv) | |
873 | kfree(priv->wdev); | |
2da8cbf8 | 874 | } |
5e6e3a92 BZ |
875 | |
876 | mwifiex_terminate_workqueue(adapter); | |
877 | ||
878 | /* Unregister device */ | |
879 | dev_dbg(adapter->dev, "info: unregister device\n"); | |
4daffe35 AK |
880 | if (adapter->if_ops.unregister_dev) |
881 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 BZ |
882 | /* Free adapter structure */ |
883 | dev_dbg(adapter->dev, "info: free adapter\n"); | |
884 | mwifiex_free_adapter(adapter); | |
885 | ||
886 | exit_remove: | |
887 | up(sem); | |
888 | exit_sem_err: | |
889 | return 0; | |
890 | } | |
891 | EXPORT_SYMBOL_GPL(mwifiex_remove_card); | |
892 | ||
893 | /* | |
894 | * This function initializes the module. | |
895 | * | |
896 | * The debug FS is also initialized if configured. | |
897 | */ | |
898 | static int | |
899 | mwifiex_init_module(void) | |
900 | { | |
901 | #ifdef CONFIG_DEBUG_FS | |
902 | mwifiex_debugfs_init(); | |
903 | #endif | |
904 | return 0; | |
905 | } | |
906 | ||
907 | /* | |
908 | * This function cleans up the module. | |
909 | * | |
910 | * The debug FS is removed if available. | |
911 | */ | |
912 | static void | |
913 | mwifiex_cleanup_module(void) | |
914 | { | |
915 | #ifdef CONFIG_DEBUG_FS | |
916 | mwifiex_debugfs_remove(); | |
917 | #endif | |
918 | } | |
919 | ||
920 | module_init(mwifiex_init_module); | |
921 | module_exit(mwifiex_cleanup_module); | |
922 | ||
923 | MODULE_AUTHOR("Marvell International Ltd."); | |
924 | MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); | |
925 | MODULE_VERSION(VERSION); | |
926 | MODULE_LICENSE("GPL v2"); |