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 AP |
74 | adapter->priv[i]->adapter = adapter; |
75 | adapter->priv[i]->bss_priority = i; | |
76 | adapter->priv_num++; | |
77 | } | |
44b815c6 | 78 | mwifiex_init_lock_list(adapter); |
5e6e3a92 BZ |
79 | |
80 | init_timer(&adapter->cmd_timer); | |
81 | adapter->cmd_timer.function = mwifiex_cmd_timeout_func; | |
82 | adapter->cmd_timer.data = (unsigned long) adapter; | |
83 | ||
5e6e3a92 BZ |
84 | return 0; |
85 | ||
86 | error: | |
87 | dev_dbg(adapter->dev, "info: leave mwifiex_register with error\n"); | |
88 | ||
93a1df48 | 89 | for (i = 0; i < adapter->priv_num; i++) |
5e6e3a92 | 90 | kfree(adapter->priv[i]); |
93a1df48 | 91 | |
5e6e3a92 BZ |
92 | kfree(adapter); |
93 | ||
94 | return -1; | |
95 | } | |
96 | ||
97 | /* | |
98 | * This function unregisters the device and performs all the necessary | |
99 | * cleanups. | |
100 | * | |
101 | * The following cleanup operations are performed - | |
102 | * - Free the timers | |
103 | * - Free beacon buffers | |
104 | * - Free private structures | |
105 | * - Free adapter structure | |
106 | */ | |
107 | static int mwifiex_unregister(struct mwifiex_adapter *adapter) | |
108 | { | |
270e58e8 | 109 | s32 i; |
5e6e3a92 BZ |
110 | |
111 | del_timer(&adapter->cmd_timer); | |
112 | ||
113 | /* Free private structures */ | |
114 | for (i = 0; i < adapter->priv_num; i++) { | |
115 | if (adapter->priv[i]) { | |
116 | mwifiex_free_curr_bcn(adapter->priv[i]); | |
117 | kfree(adapter->priv[i]); | |
118 | } | |
119 | } | |
120 | ||
121 | kfree(adapter); | |
122 | return 0; | |
123 | } | |
124 | ||
125 | /* | |
126 | * The main process. | |
127 | * | |
128 | * This function is the main procedure of the driver and handles various driver | |
129 | * operations. It runs in a loop and provides the core functionalities. | |
130 | * | |
131 | * The main responsibilities of this function are - | |
132 | * - Ensure concurrency control | |
133 | * - Handle pending interrupts and call interrupt handlers | |
134 | * - Wake up the card if required | |
135 | * - Handle command responses and call response handlers | |
136 | * - Handle events and call event handlers | |
137 | * - Execute pending commands | |
138 | * - Transmit pending data packets | |
139 | */ | |
140 | int mwifiex_main_process(struct mwifiex_adapter *adapter) | |
141 | { | |
142 | int ret = 0; | |
143 | unsigned long flags; | |
4daffe35 | 144 | struct sk_buff *skb; |
5e6e3a92 BZ |
145 | |
146 | spin_lock_irqsave(&adapter->main_proc_lock, flags); | |
147 | ||
148 | /* Check if already processing */ | |
149 | if (adapter->mwifiex_processing) { | |
150 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
151 | goto exit_main_proc; | |
152 | } else { | |
153 | adapter->mwifiex_processing = true; | |
154 | spin_unlock_irqrestore(&adapter->main_proc_lock, flags); | |
155 | } | |
156 | process_start: | |
157 | do { | |
158 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) || | |
159 | (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)) | |
160 | break; | |
161 | ||
162 | /* Handle pending interrupt if any */ | |
163 | if (adapter->int_status) { | |
164 | if (adapter->hs_activated) | |
165 | mwifiex_process_hs_config(adapter); | |
4daffe35 AK |
166 | if (adapter->if_ops.process_int_status) |
167 | adapter->if_ops.process_int_status(adapter); | |
5e6e3a92 BZ |
168 | } |
169 | ||
170 | /* Need to wake up the card ? */ | |
171 | if ((adapter->ps_state == PS_STATE_SLEEP) && | |
172 | (adapter->pm_wakeup_card_req && | |
173 | !adapter->pm_wakeup_fw_try) && | |
f57c1edc YAP |
174 | (is_command_pending(adapter) || |
175 | !mwifiex_wmm_lists_empty(adapter))) { | |
5e6e3a92 BZ |
176 | adapter->pm_wakeup_fw_try = true; |
177 | adapter->if_ops.wakeup(adapter); | |
178 | continue; | |
179 | } | |
4daffe35 | 180 | |
5e6e3a92 BZ |
181 | if (IS_CARD_RX_RCVD(adapter)) { |
182 | adapter->pm_wakeup_fw_try = false; | |
183 | if (adapter->ps_state == PS_STATE_SLEEP) | |
184 | adapter->ps_state = PS_STATE_AWAKE; | |
185 | } else { | |
186 | /* We have tried to wakeup the card already */ | |
187 | if (adapter->pm_wakeup_fw_try) | |
188 | break; | |
189 | if (adapter->ps_state != PS_STATE_AWAKE || | |
190 | adapter->tx_lock_flag) | |
191 | break; | |
192 | ||
f57c1edc YAP |
193 | if (adapter->scan_processing || adapter->data_sent || |
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 | ||
247 | if (!adapter->scan_processing && !adapter->data_sent && | |
248 | !mwifiex_wmm_lists_empty(adapter)) { | |
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 AK |
351 | |
352 | priv = adapter->priv[0]; | |
353 | if (mwifiex_register_cfg80211(priv) != 0) { | |
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 */ | |
360 | if (!mwifiex_add_virtual_intf(priv->wdev->wiphy, "mlan%d", | |
361 | NL80211_IFTYPE_STATION, NULL, NULL)) { | |
362 | dev_err(adapter->dev, "cannot create default STA interface\n"); | |
363 | goto err_add_intf; | |
5e6e3a92 | 364 | } |
59a4cc25 AK |
365 | rtnl_unlock(); |
366 | ||
367 | mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); | |
368 | dev_notice(adapter->dev, "driver_version = %s\n", fmt); | |
369 | goto done; | |
5e6e3a92 | 370 | |
59a4cc25 AK |
371 | err_add_intf: |
372 | mwifiex_del_virtual_intf(priv->wdev->wiphy, priv->netdev); | |
373 | rtnl_unlock(); | |
374 | err_init_fw: | |
375 | pr_debug("info: %s: unregister device\n", __func__); | |
376 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 | 377 | done: |
4fb25c59 | 378 | release_firmware(adapter->firmware); |
59a4cc25 AK |
379 | complete(&adapter->fw_load); |
380 | return; | |
381 | } | |
382 | ||
383 | /* | |
384 | * This function initializes the hardware and gets firmware. | |
385 | */ | |
386 | static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter) | |
387 | { | |
388 | int ret; | |
389 | ||
390 | init_completion(&adapter->fw_load); | |
391 | ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, | |
392 | adapter->dev, GFP_KERNEL, adapter, | |
393 | mwifiex_fw_dpc); | |
394 | if (ret < 0) | |
395 | dev_err(adapter->dev, | |
396 | "request_firmware_nowait() returned error %d\n", ret); | |
5e6e3a92 BZ |
397 | return ret; |
398 | } | |
399 | ||
400 | /* | |
401 | * This function fills a driver buffer. | |
402 | * | |
403 | * The function associates a given SKB with the provided driver buffer | |
404 | * and also updates some of the SKB parameters, including IP header, | |
405 | * priority and timestamp. | |
406 | */ | |
407 | static void | |
408 | mwifiex_fill_buffer(struct sk_buff *skb) | |
409 | { | |
270e58e8 | 410 | struct ethhdr *eth; |
5e6e3a92 BZ |
411 | struct iphdr *iph; |
412 | struct timeval tv; | |
413 | u8 tid = 0; | |
414 | ||
415 | eth = (struct ethhdr *) skb->data; | |
416 | switch (eth->h_proto) { | |
417 | case __constant_htons(ETH_P_IP): | |
418 | iph = ip_hdr(skb); | |
419 | tid = IPTOS_PREC(iph->tos); | |
420 | pr_debug("data: packet type ETH_P_IP: %04x, tid=%#x prio=%#x\n", | |
f57c1edc | 421 | eth->h_proto, tid, skb->priority); |
5e6e3a92 BZ |
422 | break; |
423 | case __constant_htons(ETH_P_ARP): | |
424 | pr_debug("data: ARP packet: %04x\n", eth->h_proto); | |
425 | default: | |
426 | break; | |
427 | } | |
428 | /* Offset for TOS field in the IP header */ | |
429 | #define IPTOS_OFFSET 5 | |
430 | tid = (tid >> IPTOS_OFFSET); | |
431 | skb->priority = tid; | |
432 | /* Record the current time the packet was queued; used to | |
433 | determine the amount of time the packet was queued in | |
434 | the driver before it was sent to the firmware. | |
435 | The delay is then sent along with the packet to the | |
436 | firmware for aggregate delay calculation for stats and | |
437 | MSDU lifetime expiry. | |
438 | */ | |
439 | do_gettimeofday(&tv); | |
440 | skb->tstamp = timeval_to_ktime(tv); | |
5e6e3a92 BZ |
441 | } |
442 | ||
443 | /* | |
444 | * CFG802.11 network device handler for open. | |
445 | * | |
446 | * Starts the data queue. | |
447 | */ | |
448 | static int | |
449 | mwifiex_open(struct net_device *dev) | |
450 | { | |
bbea3bc4 | 451 | netif_tx_start_all_queues(dev); |
5e6e3a92 BZ |
452 | return 0; |
453 | } | |
454 | ||
455 | /* | |
456 | * CFG802.11 network device handler for close. | |
457 | */ | |
458 | static int | |
459 | mwifiex_close(struct net_device *dev) | |
460 | { | |
461 | return 0; | |
462 | } | |
463 | ||
464 | /* | |
465 | * CFG802.11 network device handler for data transmission. | |
466 | */ | |
467 | static int | |
468 | mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
469 | { | |
470 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
270e58e8 | 471 | struct sk_buff *new_skb; |
5e6e3a92 BZ |
472 | struct mwifiex_txinfo *tx_info; |
473 | ||
9da9a3b2 | 474 | dev_dbg(priv->adapter->dev, "data: %lu BSS(%d-%d): Data <= kernel\n", |
f57c1edc | 475 | jiffies, priv->bss_type, priv->bss_num); |
5e6e3a92 BZ |
476 | |
477 | if (priv->adapter->surprise_removed) { | |
b53575ec | 478 | kfree_skb(skb); |
5e6e3a92 BZ |
479 | priv->stats.tx_dropped++; |
480 | return 0; | |
481 | } | |
482 | if (!skb->len || (skb->len > ETH_FRAME_LEN)) { | |
483 | dev_err(priv->adapter->dev, "Tx: bad skb len %d\n", skb->len); | |
b53575ec | 484 | kfree_skb(skb); |
5e6e3a92 BZ |
485 | priv->stats.tx_dropped++; |
486 | return 0; | |
487 | } | |
488 | if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { | |
489 | dev_dbg(priv->adapter->dev, | |
490 | "data: Tx: insufficient skb headroom %d\n", | |
f57c1edc | 491 | skb_headroom(skb)); |
5e6e3a92 BZ |
492 | /* Insufficient skb headroom - allocate a new skb */ |
493 | new_skb = | |
494 | skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); | |
495 | if (unlikely(!new_skb)) { | |
496 | dev_err(priv->adapter->dev, "Tx: cannot alloca new_skb\n"); | |
b53575ec | 497 | kfree_skb(skb); |
5e6e3a92 BZ |
498 | priv->stats.tx_dropped++; |
499 | return 0; | |
500 | } | |
501 | kfree_skb(skb); | |
502 | skb = new_skb; | |
503 | dev_dbg(priv->adapter->dev, "info: new skb headroomd %d\n", | |
f57c1edc | 504 | skb_headroom(skb)); |
5e6e3a92 BZ |
505 | } |
506 | ||
507 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
9da9a3b2 YAP |
508 | tx_info->bss_num = priv->bss_num; |
509 | tx_info->bss_type = priv->bss_type; | |
5e6e3a92 BZ |
510 | mwifiex_fill_buffer(skb); |
511 | ||
2690e1bb | 512 | mwifiex_wmm_add_buf_txqueue(priv, skb); |
5e6e3a92 BZ |
513 | atomic_inc(&priv->adapter->tx_pending); |
514 | ||
515 | if (atomic_read(&priv->adapter->tx_pending) >= MAX_TX_PENDING) { | |
bbea3bc4 AP |
516 | mwifiex_set_trans_start(dev); |
517 | mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter); | |
5e6e3a92 BZ |
518 | } |
519 | ||
520 | queue_work(priv->adapter->workqueue, &priv->adapter->main_work); | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | /* | |
526 | * CFG802.11 network device handler for setting MAC address. | |
527 | */ | |
528 | static int | |
529 | mwifiex_set_mac_address(struct net_device *dev, void *addr) | |
530 | { | |
531 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
a5ffddb7 | 532 | struct sockaddr *hw_addr = addr; |
270e58e8 | 533 | int ret; |
5e6e3a92 BZ |
534 | |
535 | memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN); | |
536 | ||
600f5d90 AK |
537 | /* Send request to firmware */ |
538 | ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_MAC_ADDRESS, | |
539 | HostCmd_ACT_GEN_SET, 0, NULL); | |
540 | ||
541 | if (!ret) | |
542 | memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN); | |
543 | else | |
f57c1edc YAP |
544 | dev_err(priv->adapter->dev, |
545 | "set mac address failed: ret=%d\n", ret); | |
600f5d90 | 546 | |
5e6e3a92 BZ |
547 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
548 | ||
600f5d90 | 549 | return ret; |
5e6e3a92 BZ |
550 | } |
551 | ||
552 | /* | |
553 | * CFG802.11 network device handler for setting multicast list. | |
554 | */ | |
555 | static void mwifiex_set_multicast_list(struct net_device *dev) | |
556 | { | |
557 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
600f5d90 AK |
558 | struct mwifiex_multicast_list mcast_list; |
559 | ||
560 | if (dev->flags & IFF_PROMISC) { | |
561 | mcast_list.mode = MWIFIEX_PROMISC_MODE; | |
562 | } else if (dev->flags & IFF_ALLMULTI || | |
563 | netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { | |
564 | mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; | |
565 | } else { | |
566 | mcast_list.mode = MWIFIEX_MULTICAST_MODE; | |
567 | if (netdev_mc_count(dev)) | |
568 | mcast_list.num_multicast_addr = | |
569 | mwifiex_copy_mcast_addr(&mcast_list, dev); | |
570 | } | |
571 | mwifiex_request_set_multicast_list(priv, &mcast_list); | |
5e6e3a92 BZ |
572 | } |
573 | ||
574 | /* | |
575 | * CFG802.11 network device handler for transmission timeout. | |
576 | */ | |
577 | static void | |
578 | mwifiex_tx_timeout(struct net_device *dev) | |
579 | { | |
580 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
581 | ||
9da9a3b2 | 582 | dev_err(priv->adapter->dev, "%lu : Tx timeout, bss_type-num = %d-%d\n", |
f57c1edc | 583 | jiffies, priv->bss_type, priv->bss_num); |
bbea3bc4 | 584 | mwifiex_set_trans_start(dev); |
5e6e3a92 BZ |
585 | priv->num_tx_timeout++; |
586 | } | |
587 | ||
588 | /* | |
589 | * CFG802.11 network device handler for statistics retrieval. | |
590 | */ | |
591 | static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) | |
592 | { | |
593 | struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); | |
594 | ||
595 | return &priv->stats; | |
596 | } | |
597 | ||
598 | /* Network device handlers */ | |
599 | static const struct net_device_ops mwifiex_netdev_ops = { | |
600 | .ndo_open = mwifiex_open, | |
601 | .ndo_stop = mwifiex_close, | |
602 | .ndo_start_xmit = mwifiex_hard_start_xmit, | |
603 | .ndo_set_mac_address = mwifiex_set_mac_address, | |
604 | .ndo_tx_timeout = mwifiex_tx_timeout, | |
605 | .ndo_get_stats = mwifiex_get_stats, | |
afc4b13d | 606 | .ndo_set_rx_mode = mwifiex_set_multicast_list, |
5e6e3a92 BZ |
607 | }; |
608 | ||
609 | /* | |
610 | * This function initializes the private structure parameters. | |
611 | * | |
612 | * The following wait queues are initialized - | |
613 | * - IOCTL wait queue | |
614 | * - Command wait queue | |
615 | * - Statistics wait queue | |
616 | * | |
617 | * ...and the following default parameters are set - | |
618 | * - Current key index : Set to 0 | |
619 | * - Rate index : Set to auto | |
620 | * - Media connected : Set to disconnected | |
621 | * - Adhoc link sensed : Set to false | |
622 | * - Nick name : Set to null | |
623 | * - Number of Tx timeout : Set to 0 | |
624 | * - Device address : Set to current address | |
625 | * | |
626 | * In addition, the CFG80211 work queue is also created. | |
627 | */ | |
93a1df48 YAP |
628 | void mwifiex_init_priv_params(struct mwifiex_private *priv, |
629 | struct net_device *dev) | |
5e6e3a92 BZ |
630 | { |
631 | dev->netdev_ops = &mwifiex_netdev_ops; | |
632 | /* Initialize private structure */ | |
5e6e3a92 BZ |
633 | priv->current_key_index = 0; |
634 | priv->media_connected = false; | |
635 | memset(&priv->nick_name, 0, sizeof(priv->nick_name)); | |
636 | priv->num_tx_timeout = 0; | |
5e6e3a92 BZ |
637 | memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); |
638 | } | |
639 | ||
5e6e3a92 BZ |
640 | /* |
641 | * This function check if command is pending. | |
642 | */ | |
643 | int is_command_pending(struct mwifiex_adapter *adapter) | |
644 | { | |
645 | unsigned long flags; | |
646 | int is_cmd_pend_q_empty; | |
647 | ||
648 | spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); | |
649 | is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); | |
650 | spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); | |
651 | ||
652 | return !is_cmd_pend_q_empty; | |
653 | } | |
654 | ||
5e6e3a92 BZ |
655 | /* |
656 | * This is the main work queue function. | |
657 | * | |
658 | * It handles the main process, which in turn handles the complete | |
659 | * driver operations. | |
660 | */ | |
661 | static void mwifiex_main_work_queue(struct work_struct *work) | |
662 | { | |
663 | struct mwifiex_adapter *adapter = | |
664 | container_of(work, struct mwifiex_adapter, main_work); | |
665 | ||
666 | if (adapter->surprise_removed) | |
667 | return; | |
668 | mwifiex_main_process(adapter); | |
669 | } | |
670 | ||
671 | /* | |
672 | * This function cancels all works in the queue and destroys | |
673 | * the main workqueue. | |
674 | */ | |
675 | static void | |
676 | mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) | |
677 | { | |
678 | flush_workqueue(adapter->workqueue); | |
679 | destroy_workqueue(adapter->workqueue); | |
680 | adapter->workqueue = NULL; | |
681 | } | |
682 | ||
683 | /* | |
684 | * This function adds the card. | |
685 | * | |
686 | * This function follows the following major steps to set up the device - | |
687 | * - Initialize software. This includes probing the card, registering | |
688 | * the interface operations table, and allocating/initializing the | |
689 | * adapter structure | |
690 | * - Set up the netlink socket | |
691 | * - Create and start the main work queue | |
692 | * - Register the device | |
693 | * - Initialize firmware and hardware | |
694 | * - Add logical interfaces | |
695 | */ | |
696 | int | |
697 | mwifiex_add_card(void *card, struct semaphore *sem, | |
d930faee | 698 | struct mwifiex_if_ops *if_ops, u8 iface_type) |
5e6e3a92 | 699 | { |
2be7859f | 700 | struct mwifiex_adapter *adapter; |
5e6e3a92 BZ |
701 | |
702 | if (down_interruptible(sem)) | |
703 | goto exit_sem_err; | |
704 | ||
93a1df48 | 705 | if (mwifiex_register(card, if_ops, (void **)&adapter)) { |
5e6e3a92 BZ |
706 | pr_err("%s: software init failed\n", __func__); |
707 | goto err_init_sw; | |
708 | } | |
709 | ||
d930faee AK |
710 | adapter->iface_type = iface_type; |
711 | ||
5e6e3a92 | 712 | adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; |
5e6e3a92 BZ |
713 | adapter->surprise_removed = false; |
714 | init_waitqueue_head(&adapter->init_wait_q); | |
715 | adapter->is_suspended = false; | |
716 | adapter->hs_activated = false; | |
717 | init_waitqueue_head(&adapter->hs_activate_wait_q); | |
600f5d90 AK |
718 | adapter->cmd_wait_q_required = false; |
719 | init_waitqueue_head(&adapter->cmd_wait_q.wait); | |
600f5d90 | 720 | adapter->cmd_wait_q.status = 0; |
efaaa8b8 | 721 | adapter->scan_wait_q_woken = false; |
5e6e3a92 | 722 | |
5e6e3a92 BZ |
723 | adapter->workqueue = create_workqueue("MWIFIEX_WORK_QUEUE"); |
724 | if (!adapter->workqueue) | |
725 | goto err_kmalloc; | |
726 | ||
727 | INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); | |
728 | ||
729 | /* Register the device. Fill up the private data structure with relevant | |
730 | information from the card and request for the required IRQ. */ | |
731 | if (adapter->if_ops.register_dev(adapter)) { | |
732 | pr_err("%s: failed to register mwifiex device\n", __func__); | |
733 | goto err_registerdev; | |
734 | } | |
735 | ||
5e6e3a92 BZ |
736 | if (mwifiex_init_hw_fw(adapter)) { |
737 | pr_err("%s: firmware init failed\n", __func__); | |
738 | goto err_init_fw; | |
739 | } | |
2be7859f | 740 | |
5e6e3a92 | 741 | up(sem); |
5e6e3a92 BZ |
742 | return 0; |
743 | ||
5e6e3a92 | 744 | err_init_fw: |
5e6e3a92 | 745 | pr_debug("info: %s: unregister device\n", __func__); |
4daffe35 AK |
746 | if (adapter->if_ops.unregister_dev) |
747 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 BZ |
748 | err_registerdev: |
749 | adapter->surprise_removed = true; | |
750 | mwifiex_terminate_workqueue(adapter); | |
751 | err_kmalloc: | |
752 | if ((adapter->hw_status == MWIFIEX_HW_STATUS_FW_READY) || | |
753 | (adapter->hw_status == MWIFIEX_HW_STATUS_READY)) { | |
754 | pr_debug("info: %s: shutdown mwifiex\n", __func__); | |
755 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
756 | |
757 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
758 | wait_event_interruptible(adapter->init_wait_q, |
759 | adapter->init_wait_q_woken); | |
760 | } | |
761 | ||
762 | mwifiex_free_adapter(adapter); | |
763 | ||
764 | err_init_sw: | |
765 | up(sem); | |
766 | ||
767 | exit_sem_err: | |
768 | return -1; | |
769 | } | |
770 | EXPORT_SYMBOL_GPL(mwifiex_add_card); | |
771 | ||
772 | /* | |
773 | * This function removes the card. | |
774 | * | |
775 | * This function follows the following major steps to remove the device - | |
776 | * - Stop data traffic | |
777 | * - Shutdown firmware | |
778 | * - Remove the logical interfaces | |
779 | * - Terminate the work queue | |
780 | * - Unregister the device | |
781 | * - Free the adapter structure | |
782 | */ | |
783 | int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) | |
784 | { | |
785 | struct mwifiex_private *priv = NULL; | |
5e6e3a92 BZ |
786 | int i; |
787 | ||
788 | if (down_interruptible(sem)) | |
789 | goto exit_sem_err; | |
790 | ||
791 | if (!adapter) | |
792 | goto exit_remove; | |
793 | ||
794 | adapter->surprise_removed = true; | |
795 | ||
796 | /* Stop data */ | |
797 | for (i = 0; i < adapter->priv_num; i++) { | |
798 | priv = adapter->priv[i]; | |
93a1df48 | 799 | if (priv && priv->netdev) { |
5e6e3a92 | 800 | if (!netif_queue_stopped(priv->netdev)) |
bbea3bc4 | 801 | mwifiex_stop_net_dev_queue(priv->netdev, |
f57c1edc | 802 | adapter); |
5e6e3a92 BZ |
803 | if (netif_carrier_ok(priv->netdev)) |
804 | netif_carrier_off(priv->netdev); | |
805 | } | |
806 | } | |
807 | ||
808 | dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n"); | |
809 | adapter->init_wait_q_woken = false; | |
636c4598 YAP |
810 | |
811 | if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) | |
5e6e3a92 BZ |
812 | wait_event_interruptible(adapter->init_wait_q, |
813 | adapter->init_wait_q_woken); | |
814 | dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n"); | |
815 | if (atomic_read(&adapter->rx_pending) || | |
816 | atomic_read(&adapter->tx_pending) || | |
600f5d90 | 817 | atomic_read(&adapter->cmd_pending)) { |
5e6e3a92 | 818 | dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, " |
600f5d90 | 819 | "cmd_pending=%d\n", |
5e6e3a92 BZ |
820 | atomic_read(&adapter->rx_pending), |
821 | atomic_read(&adapter->tx_pending), | |
600f5d90 | 822 | atomic_read(&adapter->cmd_pending)); |
5e6e3a92 BZ |
823 | } |
824 | ||
93a1df48 YAP |
825 | for (i = 0; i < adapter->priv_num; i++) { |
826 | priv = adapter->priv[i]; | |
827 | ||
828 | if (!priv) | |
829 | continue; | |
830 | ||
831 | rtnl_lock(); | |
2da8cbf8 AK |
832 | if (priv->wdev && priv->netdev) |
833 | mwifiex_del_virtual_intf(priv->wdev->wiphy, | |
834 | priv->netdev); | |
93a1df48 YAP |
835 | rtnl_unlock(); |
836 | } | |
837 | ||
3d82de0f | 838 | priv = adapter->priv[0]; |
64b05e2f | 839 | if (!priv || !priv->wdev) |
3d82de0f YAP |
840 | goto exit_remove; |
841 | ||
64b05e2f AP |
842 | wiphy_unregister(priv->wdev->wiphy); |
843 | wiphy_free(priv->wdev->wiphy); | |
844 | ||
845 | for (i = 0; i < adapter->priv_num; i++) { | |
846 | priv = adapter->priv[i]; | |
847 | if (priv) | |
848 | kfree(priv->wdev); | |
2da8cbf8 | 849 | } |
5e6e3a92 BZ |
850 | |
851 | mwifiex_terminate_workqueue(adapter); | |
852 | ||
853 | /* Unregister device */ | |
854 | dev_dbg(adapter->dev, "info: unregister device\n"); | |
4daffe35 AK |
855 | if (adapter->if_ops.unregister_dev) |
856 | adapter->if_ops.unregister_dev(adapter); | |
5e6e3a92 BZ |
857 | /* Free adapter structure */ |
858 | dev_dbg(adapter->dev, "info: free adapter\n"); | |
859 | mwifiex_free_adapter(adapter); | |
860 | ||
861 | exit_remove: | |
862 | up(sem); | |
863 | exit_sem_err: | |
864 | return 0; | |
865 | } | |
866 | EXPORT_SYMBOL_GPL(mwifiex_remove_card); | |
867 | ||
868 | /* | |
869 | * This function initializes the module. | |
870 | * | |
871 | * The debug FS is also initialized if configured. | |
872 | */ | |
873 | static int | |
874 | mwifiex_init_module(void) | |
875 | { | |
876 | #ifdef CONFIG_DEBUG_FS | |
877 | mwifiex_debugfs_init(); | |
878 | #endif | |
879 | return 0; | |
880 | } | |
881 | ||
882 | /* | |
883 | * This function cleans up the module. | |
884 | * | |
885 | * The debug FS is removed if available. | |
886 | */ | |
887 | static void | |
888 | mwifiex_cleanup_module(void) | |
889 | { | |
890 | #ifdef CONFIG_DEBUG_FS | |
891 | mwifiex_debugfs_remove(); | |
892 | #endif | |
893 | } | |
894 | ||
895 | module_init(mwifiex_init_module); | |
896 | module_exit(mwifiex_cleanup_module); | |
897 | ||
898 | MODULE_AUTHOR("Marvell International Ltd."); | |
899 | MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); | |
900 | MODULE_VERSION(VERSION); | |
901 | MODULE_LICENSE("GPL v2"); |