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include: replace linux/module.h with "struct module" wherever possible
[linux-2.6/next.git] / drivers / net / wireless / libertas / main.c
blob94652c5a25de396ebe4fceeeb4ccd79663d4b862
1 /*
2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
4 * thread etc..
5 */
6
7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9 #include <linux/moduleparam.h>
10 #include <linux/delay.h>
11 #include <linux/etherdevice.h>
12 #include <linux/hardirq.h>
13 #include <linux/netdevice.h>
14 #include <linux/if_arp.h>
15 #include <linux/kthread.h>
16 #include <linux/kfifo.h>
17 #include <linux/slab.h>
18 #include <net/cfg80211.h>
19
20 #include "host.h"
21 #include "decl.h"
22 #include "dev.h"
23 #include "cfg.h"
24 #include "debugfs.h"
25 #include "cmd.h"
26
27 #define DRIVER_RELEASE_VERSION "323.p0"
28 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
29 #ifdef DEBUG
30 "-dbg"
31 #endif
32 "";
33
34
35 /* Module parameters */
36 unsigned int lbs_debug;
37 EXPORT_SYMBOL_GPL(lbs_debug);
38 module_param_named(libertas_debug, lbs_debug, int, 0644);
39
40 unsigned int lbs_disablemesh;
41 EXPORT_SYMBOL_GPL(lbs_disablemesh);
42 module_param_named(libertas_disablemesh, lbs_disablemesh, int, 0644);
43
44
45 /*
46 * This global structure is used to send the confirm_sleep command as
47 * fast as possible down to the firmware.
48 */
49 struct cmd_confirm_sleep confirm_sleep;
50
51
52 /*
53 * the table to keep region code
54 */
55 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
56 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
57
58 /*
59 * FW rate table. FW refers to rates by their index in this table, not by the
60 * rate value itself. Values of 0x00 are
61 * reserved positions.
62 */
63 static u8 fw_data_rates[MAX_RATES] =
64 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
65 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
66 };
67
68 /**
69 * lbs_fw_index_to_data_rate - use index to get the data rate
70 *
71 * @idx: The index of data rate
72 * returns: data rate or 0
73 */
74 u32 lbs_fw_index_to_data_rate(u8 idx)
75 {
76 if (idx >= sizeof(fw_data_rates))
77 idx = 0;
78 return fw_data_rates[idx];
79 }
80
81 /**
82 * lbs_data_rate_to_fw_index - use rate to get the index
83 *
84 * @rate: data rate
85 * returns: index or 0
86 */
87 u8 lbs_data_rate_to_fw_index(u32 rate)
88 {
89 u8 i;
90
91 if (!rate)
92 return 0;
93
94 for (i = 0; i < sizeof(fw_data_rates); i++) {
95 if (rate == fw_data_rates[i])
96 return i;
97 }
98 return 0;
99 }
100
101
102 /**
103 * lbs_dev_open - open the ethX interface
104 *
105 * @dev: A pointer to &net_device structure
106 * returns: 0 or -EBUSY if monitor mode active
107 */
108 static int lbs_dev_open(struct net_device *dev)
109 {
110 struct lbs_private *priv = dev->ml_priv;
111 int ret = 0;
112
113 lbs_deb_enter(LBS_DEB_NET);
114
115 spin_lock_irq(&priv->driver_lock);
116 priv->stopping = false;
117
118 if (priv->connect_status == LBS_CONNECTED)
119 netif_carrier_on(dev);
120 else
121 netif_carrier_off(dev);
122
123 if (!priv->tx_pending_len)
124 netif_wake_queue(dev);
125
126 spin_unlock_irq(&priv->driver_lock);
127 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
128 return ret;
129 }
130
131 /**
132 * lbs_eth_stop - close the ethX interface
133 *
134 * @dev: A pointer to &net_device structure
135 * returns: 0
136 */
137 static int lbs_eth_stop(struct net_device *dev)
138 {
139 struct lbs_private *priv = dev->ml_priv;
140
141 lbs_deb_enter(LBS_DEB_NET);
142
143 spin_lock_irq(&priv->driver_lock);
144 priv->stopping = true;
145 netif_stop_queue(dev);
146 spin_unlock_irq(&priv->driver_lock);
147
148 schedule_work(&priv->mcast_work);
149 cancel_delayed_work_sync(&priv->scan_work);
150 if (priv->scan_req) {
151 cfg80211_scan_done(priv->scan_req, false);
152 priv->scan_req = NULL;
153 }
154
155 lbs_deb_leave(LBS_DEB_NET);
156 return 0;
157 }
158
159 void lbs_host_to_card_done(struct lbs_private *priv)
160 {
161 unsigned long flags;
162
163 lbs_deb_enter(LBS_DEB_THREAD);
164
165 spin_lock_irqsave(&priv->driver_lock, flags);
166
167 priv->dnld_sent = DNLD_RES_RECEIVED;
168
169 /* Wake main thread if commands are pending */
170 if (!priv->cur_cmd || priv->tx_pending_len > 0) {
171 if (!priv->wakeup_dev_required)
172 wake_up_interruptible(&priv->waitq);
173 }
174
175 spin_unlock_irqrestore(&priv->driver_lock, flags);
176 lbs_deb_leave(LBS_DEB_THREAD);
177 }
178 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
179
180 int lbs_set_mac_address(struct net_device *dev, void *addr)
181 {
182 int ret = 0;
183 struct lbs_private *priv = dev->ml_priv;
184 struct sockaddr *phwaddr = addr;
185 struct cmd_ds_802_11_mac_address cmd;
186
187 lbs_deb_enter(LBS_DEB_NET);
188
189 /* In case it was called from the mesh device */
190 dev = priv->dev;
191
192 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
193 cmd.action = cpu_to_le16(CMD_ACT_SET);
194 memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
195
196 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
197 if (ret) {
198 lbs_deb_net("set MAC address failed\n");
199 goto done;
200 }
201
202 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
203 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
204 if (priv->mesh_dev)
205 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
206
207 done:
208 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
209 return ret;
210 }
211
212
213 static inline int mac_in_list(unsigned char *list, int list_len,
214 unsigned char *mac)
215 {
216 while (list_len) {
217 if (!memcmp(list, mac, ETH_ALEN))
218 return 1;
219 list += ETH_ALEN;
220 list_len--;
221 }
222 return 0;
223 }
224
225
226 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
227 struct net_device *dev, int nr_addrs)
228 {
229 int i = nr_addrs;
230 struct netdev_hw_addr *ha;
231 int cnt;
232
233 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
234 return nr_addrs;
235
236 netif_addr_lock_bh(dev);
237 cnt = netdev_mc_count(dev);
238 netdev_for_each_mc_addr(ha, dev) {
239 if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {
240 lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
241 ha->addr);
242 cnt--;
243 continue;
244 }
245
246 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
247 break;
248 memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);
249 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
250 ha->addr);
251 i++;
252 cnt--;
253 }
254 netif_addr_unlock_bh(dev);
255 if (cnt)
256 return -EOVERFLOW;
257
258 return i;
259 }
260
261 static void lbs_set_mcast_worker(struct work_struct *work)
262 {
263 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
264 struct cmd_ds_mac_multicast_adr mcast_cmd;
265 int dev_flags;
266 int nr_addrs;
267 int old_mac_control = priv->mac_control;
268
269 lbs_deb_enter(LBS_DEB_NET);
270
271 dev_flags = priv->dev->flags;
272 if (priv->mesh_dev)
273 dev_flags |= priv->mesh_dev->flags;
274
275 if (dev_flags & IFF_PROMISC) {
276 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
277 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
278 CMD_ACT_MAC_MULTICAST_ENABLE);
279 goto out_set_mac_control;
280 } else if (dev_flags & IFF_ALLMULTI) {
281 do_allmulti:
282 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
283 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
284 CMD_ACT_MAC_MULTICAST_ENABLE);
285 goto out_set_mac_control;
286 }
287
288 /* Once for priv->dev, again for priv->mesh_dev if it exists */
289 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
290 if (nr_addrs >= 0 && priv->mesh_dev)
291 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
292 if (nr_addrs < 0)
293 goto do_allmulti;
294
295 if (nr_addrs) {
296 int size = offsetof(struct cmd_ds_mac_multicast_adr,
297 maclist[6*nr_addrs]);
298
299 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
300 mcast_cmd.hdr.size = cpu_to_le16(size);
301 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
302
303 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
304
305 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
306 } else
307 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
308
309 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
310 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
311 out_set_mac_control:
312 if (priv->mac_control != old_mac_control)
313 lbs_set_mac_control(priv);
314
315 lbs_deb_leave(LBS_DEB_NET);
316 }
317
318 void lbs_set_multicast_list(struct net_device *dev)
319 {
320 struct lbs_private *priv = dev->ml_priv;
321
322 schedule_work(&priv->mcast_work);
323 }
324
325 /**
326 * lbs_thread - handles the major jobs in the LBS driver.
327 * It handles all events generated by firmware, RX data received
328 * from firmware and TX data sent from kernel.
329 *
330 * @data: A pointer to &lbs_thread structure
331 * returns: 0
332 */
333 static int lbs_thread(void *data)
334 {
335 struct net_device *dev = data;
336 struct lbs_private *priv = dev->ml_priv;
337 wait_queue_t wait;
338
339 lbs_deb_enter(LBS_DEB_THREAD);
340
341 init_waitqueue_entry(&wait, current);
342
343 for (;;) {
344 int shouldsleep;
345 u8 resp_idx;
346
347 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
348 priv->currenttxskb, priv->dnld_sent);
349
350 add_wait_queue(&priv->waitq, &wait);
351 set_current_state(TASK_INTERRUPTIBLE);
352 spin_lock_irq(&priv->driver_lock);
353
354 if (kthread_should_stop())
355 shouldsleep = 0; /* Bye */
356 else if (priv->surpriseremoved)
357 shouldsleep = 1; /* We need to wait until we're _told_ to die */
358 else if (priv->psstate == PS_STATE_SLEEP)
359 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
360 else if (priv->cmd_timed_out)
361 shouldsleep = 0; /* Command timed out. Recover */
362 else if (!priv->fw_ready)
363 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
364 else if (priv->dnld_sent)
365 shouldsleep = 1; /* Something is en route to the device already */
366 else if (priv->tx_pending_len > 0)
367 shouldsleep = 0; /* We've a packet to send */
368 else if (priv->resp_len[priv->resp_idx])
369 shouldsleep = 0; /* We have a command response */
370 else if (priv->cur_cmd)
371 shouldsleep = 1; /* Can't send a command; one already running */
372 else if (!list_empty(&priv->cmdpendingq) &&
373 !(priv->wakeup_dev_required))
374 shouldsleep = 0; /* We have a command to send */
375 else if (kfifo_len(&priv->event_fifo))
376 shouldsleep = 0; /* We have an event to process */
377 else
378 shouldsleep = 1; /* No command */
379
380 if (shouldsleep) {
381 lbs_deb_thread("sleeping, connect_status %d, "
382 "psmode %d, psstate %d\n",
383 priv->connect_status,
384 priv->psmode, priv->psstate);
385 spin_unlock_irq(&priv->driver_lock);
386 schedule();
387 } else
388 spin_unlock_irq(&priv->driver_lock);
389
390 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
391 priv->currenttxskb, priv->dnld_sent);
392
393 set_current_state(TASK_RUNNING);
394 remove_wait_queue(&priv->waitq, &wait);
395
396 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
397 priv->currenttxskb, priv->dnld_sent);
398
399 if (kthread_should_stop()) {
400 lbs_deb_thread("break from main thread\n");
401 break;
402 }
403
404 if (priv->surpriseremoved) {
405 lbs_deb_thread("adapter removed; waiting to die...\n");
406 continue;
407 }
408
409 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
410 priv->currenttxskb, priv->dnld_sent);
411
412 /* Process any pending command response */
413 spin_lock_irq(&priv->driver_lock);
414 resp_idx = priv->resp_idx;
415 if (priv->resp_len[resp_idx]) {
416 spin_unlock_irq(&priv->driver_lock);
417 lbs_process_command_response(priv,
418 priv->resp_buf[resp_idx],
419 priv->resp_len[resp_idx]);
420 spin_lock_irq(&priv->driver_lock);
421 priv->resp_len[resp_idx] = 0;
422 }
423 spin_unlock_irq(&priv->driver_lock);
424
425 /* Process hardware events, e.g. card removed, link lost */
426 spin_lock_irq(&priv->driver_lock);
427 while (kfifo_len(&priv->event_fifo)) {
428 u32 event;
429
430 if (kfifo_out(&priv->event_fifo,
431 (unsigned char *) &event, sizeof(event)) !=
432 sizeof(event))
433 break;
434 spin_unlock_irq(&priv->driver_lock);
435 lbs_process_event(priv, event);
436 spin_lock_irq(&priv->driver_lock);
437 }
438 spin_unlock_irq(&priv->driver_lock);
439
440 if (priv->wakeup_dev_required) {
441 lbs_deb_thread("Waking up device...\n");
442 /* Wake up device */
443 if (priv->exit_deep_sleep(priv))
444 lbs_deb_thread("Wakeup device failed\n");
445 continue;
446 }
447
448 /* command timeout stuff */
449 if (priv->cmd_timed_out && priv->cur_cmd) {
450 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
451
452 netdev_info(dev, "Timeout submitting command 0x%04x\n",
453 le16_to_cpu(cmdnode->cmdbuf->command));
454 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
455 if (priv->reset_card)
456 priv->reset_card(priv);
457 }
458 priv->cmd_timed_out = 0;
459
460 if (!priv->fw_ready)
461 continue;
462
463 /* Check if we need to confirm Sleep Request received previously */
464 if (priv->psstate == PS_STATE_PRE_SLEEP &&
465 !priv->dnld_sent && !priv->cur_cmd) {
466 if (priv->connect_status == LBS_CONNECTED) {
467 lbs_deb_thread("pre-sleep, currenttxskb %p, "
468 "dnld_sent %d, cur_cmd %p\n",
469 priv->currenttxskb, priv->dnld_sent,
470 priv->cur_cmd);
471
472 lbs_ps_confirm_sleep(priv);
473 } else {
474 /* workaround for firmware sending
475 * deauth/linkloss event immediately
476 * after sleep request; remove this
477 * after firmware fixes it
478 */
479 priv->psstate = PS_STATE_AWAKE;
480 netdev_alert(dev,
481 "ignore PS_SleepConfirm in non-connected state\n");
482 }
483 }
484
485 /* The PS state is changed during processing of Sleep Request
486 * event above
487 */
488 if ((priv->psstate == PS_STATE_SLEEP) ||
489 (priv->psstate == PS_STATE_PRE_SLEEP))
490 continue;
491
492 if (priv->is_deep_sleep)
493 continue;
494
495 /* Execute the next command */
496 if (!priv->dnld_sent && !priv->cur_cmd)
497 lbs_execute_next_command(priv);
498
499 spin_lock_irq(&priv->driver_lock);
500 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
501 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
502 priv->tx_pending_buf,
503 priv->tx_pending_len);
504 if (ret) {
505 lbs_deb_tx("host_to_card failed %d\n", ret);
506 priv->dnld_sent = DNLD_RES_RECEIVED;
507 }
508 priv->tx_pending_len = 0;
509 if (!priv->currenttxskb) {
510 /* We can wake the queues immediately if we aren't
511 waiting for TX feedback */
512 if (priv->connect_status == LBS_CONNECTED)
513 netif_wake_queue(priv->dev);
514 if (priv->mesh_dev &&
515 netif_running(priv->mesh_dev))
516 netif_wake_queue(priv->mesh_dev);
517 }
518 }
519 spin_unlock_irq(&priv->driver_lock);
520 }
521
522 del_timer(&priv->command_timer);
523 del_timer(&priv->auto_deepsleep_timer);
524
525 lbs_deb_leave(LBS_DEB_THREAD);
526 return 0;
527 }
528
529 /**
530 * lbs_setup_firmware - gets the HW spec from the firmware and sets
531 * some basic parameters
532 *
533 * @priv: A pointer to &struct lbs_private structure
534 * returns: 0 or -1
535 */
536 static int lbs_setup_firmware(struct lbs_private *priv)
537 {
538 int ret = -1;
539 s16 curlevel = 0, minlevel = 0, maxlevel = 0;
540
541 lbs_deb_enter(LBS_DEB_FW);
542
543 /* Read MAC address from firmware */
544 memset(priv->current_addr, 0xff, ETH_ALEN);
545 ret = lbs_update_hw_spec(priv);
546 if (ret)
547 goto done;
548
549 /* Read power levels if available */
550 ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
551 if (ret == 0) {
552 priv->txpower_cur = curlevel;
553 priv->txpower_min = minlevel;
554 priv->txpower_max = maxlevel;
555 }
556
557 /* Send cmd to FW to enable 11D function */
558 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);
559
560 lbs_set_mac_control(priv);
561 done:
562 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
563 return ret;
564 }
565
566 int lbs_suspend(struct lbs_private *priv)
567 {
568 int ret;
569
570 lbs_deb_enter(LBS_DEB_FW);
571
572 if (priv->is_deep_sleep) {
573 ret = lbs_set_deep_sleep(priv, 0);
574 if (ret) {
575 netdev_err(priv->dev,
576 "deep sleep cancellation failed: %d\n", ret);
577 return ret;
578 }
579 priv->deep_sleep_required = 1;
580 }
581
582 ret = lbs_set_host_sleep(priv, 1);
583
584 netif_device_detach(priv->dev);
585 if (priv->mesh_dev)
586 netif_device_detach(priv->mesh_dev);
587
588 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
589 return ret;
590 }
591 EXPORT_SYMBOL_GPL(lbs_suspend);
592
593 int lbs_resume(struct lbs_private *priv)
594 {
595 int ret;
596
597 lbs_deb_enter(LBS_DEB_FW);
598
599 ret = lbs_set_host_sleep(priv, 0);
600
601 netif_device_attach(priv->dev);
602 if (priv->mesh_dev)
603 netif_device_attach(priv->mesh_dev);
604
605 if (priv->deep_sleep_required) {
606 priv->deep_sleep_required = 0;
607 ret = lbs_set_deep_sleep(priv, 1);
608 if (ret)
609 netdev_err(priv->dev,
610 "deep sleep activation failed: %d\n", ret);
611 }
612
613 if (priv->setup_fw_on_resume)
614 ret = lbs_setup_firmware(priv);
615
616 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
617 return ret;
618 }
619 EXPORT_SYMBOL_GPL(lbs_resume);
620
621 /**
622 * lbs_cmd_timeout_handler - handles the timeout of command sending.
623 * It will re-send the same command again.
624 *
625 * @data: &struct lbs_private pointer
626 */
627 static void lbs_cmd_timeout_handler(unsigned long data)
628 {
629 struct lbs_private *priv = (struct lbs_private *)data;
630 unsigned long flags;
631
632 lbs_deb_enter(LBS_DEB_CMD);
633 spin_lock_irqsave(&priv->driver_lock, flags);
634
635 if (!priv->cur_cmd)
636 goto out;
637
638 netdev_info(priv->dev, "command 0x%04x timed out\n",
639 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
640
641 priv->cmd_timed_out = 1;
642
643 /*
644 * If the device didn't even acknowledge the command, reset the state
645 * so that we don't block all future commands due to this one timeout.
646 */
647 if (priv->dnld_sent == DNLD_CMD_SENT)
648 priv->dnld_sent = DNLD_RES_RECEIVED;
649
650 wake_up_interruptible(&priv->waitq);
651 out:
652 spin_unlock_irqrestore(&priv->driver_lock, flags);
653 lbs_deb_leave(LBS_DEB_CMD);
654 }
655
656 /**
657 * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
658 * timer expires and no activity (command, event, data etc.) is detected.
659 * @data: &struct lbs_private pointer
660 * returns: N/A
661 */
662 static void auto_deepsleep_timer_fn(unsigned long data)
663 {
664 struct lbs_private *priv = (struct lbs_private *)data;
665
666 lbs_deb_enter(LBS_DEB_CMD);
667
668 if (priv->is_activity_detected) {
669 priv->is_activity_detected = 0;
670 } else {
671 if (priv->is_auto_deep_sleep_enabled &&
672 (!priv->wakeup_dev_required) &&
673 (priv->connect_status != LBS_CONNECTED)) {
674 struct cmd_header cmd;
675
676 lbs_deb_main("Entering auto deep sleep mode...\n");
677 memset(&cmd, 0, sizeof(cmd));
678 cmd.size = cpu_to_le16(sizeof(cmd));
679 lbs_cmd_async(priv, CMD_802_11_DEEP_SLEEP, &cmd,
680 sizeof(cmd));
681 }
682 }
683 mod_timer(&priv->auto_deepsleep_timer , jiffies +
684 (priv->auto_deep_sleep_timeout * HZ)/1000);
685 lbs_deb_leave(LBS_DEB_CMD);
686 }
687
688 int lbs_enter_auto_deep_sleep(struct lbs_private *priv)
689 {
690 lbs_deb_enter(LBS_DEB_SDIO);
691
692 priv->is_auto_deep_sleep_enabled = 1;
693 if (priv->is_deep_sleep)
694 priv->wakeup_dev_required = 1;
695 mod_timer(&priv->auto_deepsleep_timer ,
696 jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);
697
698 lbs_deb_leave(LBS_DEB_SDIO);
699 return 0;
700 }
701
702 int lbs_exit_auto_deep_sleep(struct lbs_private *priv)
703 {
704 lbs_deb_enter(LBS_DEB_SDIO);
705
706 priv->is_auto_deep_sleep_enabled = 0;
707 priv->auto_deep_sleep_timeout = 0;
708 del_timer(&priv->auto_deepsleep_timer);
709
710 lbs_deb_leave(LBS_DEB_SDIO);
711 return 0;
712 }
713
714 static int lbs_init_adapter(struct lbs_private *priv)
715 {
716 int ret;
717
718 lbs_deb_enter(LBS_DEB_MAIN);
719
720 memset(priv->current_addr, 0xff, ETH_ALEN);
721
722 priv->connect_status = LBS_DISCONNECTED;
723 priv->channel = DEFAULT_AD_HOC_CHANNEL;
724 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
725 priv->radio_on = 1;
726 priv->psmode = LBS802_11POWERMODECAM;
727 priv->psstate = PS_STATE_FULL_POWER;
728 priv->is_deep_sleep = 0;
729 priv->is_auto_deep_sleep_enabled = 0;
730 priv->deep_sleep_required = 0;
731 priv->wakeup_dev_required = 0;
732 init_waitqueue_head(&priv->ds_awake_q);
733 init_waitqueue_head(&priv->scan_q);
734 priv->authtype_auto = 1;
735 priv->is_host_sleep_configured = 0;
736 priv->is_host_sleep_activated = 0;
737 init_waitqueue_head(&priv->host_sleep_q);
738 mutex_init(&priv->lock);
739
740 setup_timer(&priv->command_timer, lbs_cmd_timeout_handler,
741 (unsigned long)priv);
742 setup_timer(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn,
743 (unsigned long)priv);
744
745 INIT_LIST_HEAD(&priv->cmdfreeq);
746 INIT_LIST_HEAD(&priv->cmdpendingq);
747
748 spin_lock_init(&priv->driver_lock);
749
750 /* Allocate the command buffers */
751 if (lbs_allocate_cmd_buffer(priv)) {
752 pr_err("Out of memory allocating command buffers\n");
753 ret = -ENOMEM;
754 goto out;
755 }
756 priv->resp_idx = 0;
757 priv->resp_len[0] = priv->resp_len[1] = 0;
758
759 /* Create the event FIFO */
760 ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
761 if (ret) {
762 pr_err("Out of memory allocating event FIFO buffer\n");
763 goto out;
764 }
765
766 out:
767 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
768
769 return ret;
770 }
771
772 static void lbs_free_adapter(struct lbs_private *priv)
773 {
774 lbs_deb_enter(LBS_DEB_MAIN);
775
776 lbs_free_cmd_buffer(priv);
777 kfifo_free(&priv->event_fifo);
778 del_timer(&priv->command_timer);
779 del_timer(&priv->auto_deepsleep_timer);
780
781 lbs_deb_leave(LBS_DEB_MAIN);
782 }
783
784 static const struct net_device_ops lbs_netdev_ops = {
785 .ndo_open = lbs_dev_open,
786 .ndo_stop = lbs_eth_stop,
787 .ndo_start_xmit = lbs_hard_start_xmit,
788 .ndo_set_mac_address = lbs_set_mac_address,
789 .ndo_set_multicast_list = lbs_set_multicast_list,
790 .ndo_change_mtu = eth_change_mtu,
791 .ndo_validate_addr = eth_validate_addr,
792 };
793
794 /**
795 * lbs_add_card - adds the card. It will probe the
796 * card, allocate the lbs_priv and initialize the device.
797 *
798 * @card: A pointer to card
799 * @dmdev: A pointer to &struct device
800 * returns: A pointer to &struct lbs_private structure
801 */
802 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
803 {
804 struct net_device *dev;
805 struct wireless_dev *wdev;
806 struct lbs_private *priv = NULL;
807
808 lbs_deb_enter(LBS_DEB_MAIN);
809
810 /* Allocate an Ethernet device and register it */
811 wdev = lbs_cfg_alloc(dmdev);
812 if (IS_ERR(wdev)) {
813 pr_err("cfg80211 init failed\n");
814 goto done;
815 }
816
817 wdev->iftype = NL80211_IFTYPE_STATION;
818 priv = wdev_priv(wdev);
819 priv->wdev = wdev;
820
821 if (lbs_init_adapter(priv)) {
822 pr_err("failed to initialize adapter structure\n");
823 goto err_wdev;
824 }
825
826 dev = alloc_netdev(0, "wlan%d", ether_setup);
827 if (!dev) {
828 dev_err(dmdev, "no memory for network device instance\n");
829 goto err_adapter;
830 }
831
832 dev->ieee80211_ptr = wdev;
833 dev->ml_priv = priv;
834 SET_NETDEV_DEV(dev, dmdev);
835 wdev->netdev = dev;
836 priv->dev = dev;
837
838 dev->netdev_ops = &lbs_netdev_ops;
839 dev->watchdog_timeo = 5 * HZ;
840 dev->ethtool_ops = &lbs_ethtool_ops;
841 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
842
843 priv->card = card;
844
845 strcpy(dev->name, "wlan%d");
846
847 lbs_deb_thread("Starting main thread...\n");
848 init_waitqueue_head(&priv->waitq);
849 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
850 if (IS_ERR(priv->main_thread)) {
851 lbs_deb_thread("Error creating main thread.\n");
852 goto err_ndev;
853 }
854
855 priv->work_thread = create_singlethread_workqueue("lbs_worker");
856 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
857
858 priv->wol_criteria = EHS_REMOVE_WAKEUP;
859 priv->wol_gpio = 0xff;
860 priv->wol_gap = 20;
861 priv->ehs_remove_supported = true;
862
863 goto done;
864
865 err_ndev:
866 free_netdev(dev);
867
868 err_adapter:
869 lbs_free_adapter(priv);
870
871 err_wdev:
872 lbs_cfg_free(priv);
873
874 priv = NULL;
875
876 done:
877 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
878 return priv;
879 }
880 EXPORT_SYMBOL_GPL(lbs_add_card);
881
882
883 void lbs_remove_card(struct lbs_private *priv)
884 {
885 struct net_device *dev = priv->dev;
886
887 lbs_deb_enter(LBS_DEB_MAIN);
888
889 lbs_remove_mesh(priv);
890 lbs_scan_deinit(priv);
891
892 dev = priv->dev;
893
894 cancel_work_sync(&priv->mcast_work);
895
896 /* worker thread destruction blocks on the in-flight command which
897 * should have been cleared already in lbs_stop_card().
898 */
899 lbs_deb_main("destroying worker thread\n");
900 destroy_workqueue(priv->work_thread);
901 lbs_deb_main("done destroying worker thread\n");
902
903 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
904 priv->psmode = LBS802_11POWERMODECAM;
905 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, true);
906 }
907
908 if (priv->is_deep_sleep) {
909 priv->is_deep_sleep = 0;
910 wake_up_interruptible(&priv->ds_awake_q);
911 }
912
913 priv->is_host_sleep_configured = 0;
914 priv->is_host_sleep_activated = 0;
915 wake_up_interruptible(&priv->host_sleep_q);
916
917 /* Stop the thread servicing the interrupts */
918 priv->surpriseremoved = 1;
919 kthread_stop(priv->main_thread);
920
921 lbs_free_adapter(priv);
922 lbs_cfg_free(priv);
923 free_netdev(dev);
924
925 lbs_deb_leave(LBS_DEB_MAIN);
926 }
927 EXPORT_SYMBOL_GPL(lbs_remove_card);
928
929
930 int lbs_rtap_supported(struct lbs_private *priv)
931 {
932 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
933 return 1;
934
935 /* newer firmware use a capability mask */
936 return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
937 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));
938 }
939
940
941 int lbs_start_card(struct lbs_private *priv)
942 {
943 struct net_device *dev = priv->dev;
944 int ret = -1;
945
946 lbs_deb_enter(LBS_DEB_MAIN);
947
948 /* poke the firmware */
949 ret = lbs_setup_firmware(priv);
950 if (ret)
951 goto done;
952
953 if (lbs_cfg_register(priv)) {
954 pr_err("cannot register device\n");
955 goto done;
956 }
957
958 lbs_update_channel(priv);
959
960 if (!lbs_disablemesh)
961 lbs_init_mesh(priv);
962 else
963 pr_info("%s: mesh disabled\n", dev->name);
964
965 lbs_debugfs_init_one(priv, dev);
966
967 netdev_info(dev, "Marvell WLAN 802.11 adapter\n");
968
969 ret = 0;
970
971 done:
972 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
973 return ret;
974 }
975 EXPORT_SYMBOL_GPL(lbs_start_card);
976
977
978 void lbs_stop_card(struct lbs_private *priv)
979 {
980 struct net_device *dev;
981 struct cmd_ctrl_node *cmdnode;
982 unsigned long flags;
983
984 lbs_deb_enter(LBS_DEB_MAIN);
985
986 if (!priv)
987 goto out;
988 dev = priv->dev;
989
990 netif_stop_queue(dev);
991 netif_carrier_off(dev);
992
993 lbs_debugfs_remove_one(priv);
994 lbs_deinit_mesh(priv);
995
996 /* Delete the timeout of the currently processing command */
997 del_timer_sync(&priv->command_timer);
998 del_timer_sync(&priv->auto_deepsleep_timer);
999
1000 /* Flush pending command nodes */
1001 spin_lock_irqsave(&priv->driver_lock, flags);
1002 lbs_deb_main("clearing pending commands\n");
1003 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1004 cmdnode->result = -ENOENT;
1005 cmdnode->cmdwaitqwoken = 1;
1006 wake_up(&cmdnode->cmdwait_q);
1007 }
1008
1009 /* Flush the command the card is currently processing */
1010 if (priv->cur_cmd) {
1011 lbs_deb_main("clearing current command\n");
1012 priv->cur_cmd->result = -ENOENT;
1013 priv->cur_cmd->cmdwaitqwoken = 1;
1014 wake_up(&priv->cur_cmd->cmdwait_q);
1015 }
1016 lbs_deb_main("done clearing commands\n");
1017 spin_unlock_irqrestore(&priv->driver_lock, flags);
1018
1019 unregister_netdev(dev);
1020
1021 out:
1022 lbs_deb_leave(LBS_DEB_MAIN);
1023 }
1024 EXPORT_SYMBOL_GPL(lbs_stop_card);
1025
1026
1027 void lbs_queue_event(struct lbs_private *priv, u32 event)
1028 {
1029 unsigned long flags;
1030
1031 lbs_deb_enter(LBS_DEB_THREAD);
1032 spin_lock_irqsave(&priv->driver_lock, flags);
1033
1034 if (priv->psstate == PS_STATE_SLEEP)
1035 priv->psstate = PS_STATE_AWAKE;
1036
1037 kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1038
1039 wake_up_interruptible(&priv->waitq);
1040
1041 spin_unlock_irqrestore(&priv->driver_lock, flags);
1042 lbs_deb_leave(LBS_DEB_THREAD);
1043 }
1044 EXPORT_SYMBOL_GPL(lbs_queue_event);
1045
1046 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1047 {
1048 lbs_deb_enter(LBS_DEB_THREAD);
1049
1050 if (priv->psstate == PS_STATE_SLEEP)
1051 priv->psstate = PS_STATE_AWAKE;
1052
1053 /* Swap buffers by flipping the response index */
1054 BUG_ON(resp_idx > 1);
1055 priv->resp_idx = resp_idx;
1056
1057 wake_up_interruptible(&priv->waitq);
1058
1059 lbs_deb_leave(LBS_DEB_THREAD);
1060 }
1061 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1062
1063 /**
1064 * lbs_get_firmware - Retrieves two-stage firmware
1065 *
1066 * @dev: A pointer to &device structure
1067 * @user_helper: User-defined helper firmware file
1068 * @user_mainfw: User-defined main firmware file
1069 * @card_model: Bus-specific card model ID used to filter firmware table
1070 * elements
1071 * @fw_table: Table of firmware file names and device model numbers
1072 * terminated by an entry with a NULL helper name
1073 * @helper: On success, the helper firmware; caller must free
1074 * @mainfw: On success, the main firmware; caller must free
1075 *
1076 * returns: 0 on success, non-zero on failure
1077 */
1078 int lbs_get_firmware(struct device *dev, const char *user_helper,
1079 const char *user_mainfw, u32 card_model,
1080 const struct lbs_fw_table *fw_table,
1081 const struct firmware **helper,
1082 const struct firmware **mainfw)
1083 {
1084 const struct lbs_fw_table *iter;
1085 int ret;
1086
1087 BUG_ON(helper == NULL);
1088 BUG_ON(mainfw == NULL);
1089
1090 /* Try user-specified firmware first */
1091 if (user_helper) {
1092 ret = request_firmware(helper, user_helper, dev);
1093 if (ret) {
1094 dev_err(dev, "couldn't find helper firmware %s\n",
1095 user_helper);
1096 goto fail;
1097 }
1098 }
1099 if (user_mainfw) {
1100 ret = request_firmware(mainfw, user_mainfw, dev);
1101 if (ret) {
1102 dev_err(dev, "couldn't find main firmware %s\n",
1103 user_mainfw);
1104 goto fail;
1105 }
1106 }
1107
1108 if (*helper && *mainfw)
1109 return 0;
1110
1111 /* Otherwise search for firmware to use. If neither the helper or
1112 * the main firmware were specified by the user, then we need to
1113 * make sure that found helper & main are from the same entry in
1114 * fw_table.
1115 */
1116 iter = fw_table;
1117 while (iter && iter->helper) {
1118 if (iter->model != card_model)
1119 goto next;
1120
1121 if (*helper == NULL) {
1122 ret = request_firmware(helper, iter->helper, dev);
1123 if (ret)
1124 goto next;
1125
1126 /* If the device has one-stage firmware (ie cf8305) and
1127 * we've got it then we don't need to bother with the
1128 * main firmware.
1129 */
1130 if (iter->fwname == NULL)
1131 return 0;
1132 }
1133
1134 if (*mainfw == NULL) {
1135 ret = request_firmware(mainfw, iter->fwname, dev);
1136 if (ret && !user_helper) {
1137 /* Clear the helper if it wasn't user-specified
1138 * and the main firmware load failed, to ensure
1139 * we don't have mismatched firmware pairs.
1140 */
1141 release_firmware(*helper);
1142 *helper = NULL;
1143 }
1144 }
1145
1146 if (*helper && *mainfw)
1147 return 0;
1148
1149 next:
1150 iter++;
1151 }
1152
1153 fail:
1154 /* Failed */
1155 if (*helper) {
1156 release_firmware(*helper);
1157 *helper = NULL;
1158 }
1159 if (*mainfw) {
1160 release_firmware(*mainfw);
1161 *mainfw = NULL;
1162 }
1163
1164 return -ENOENT;
1165 }
1166 EXPORT_SYMBOL_GPL(lbs_get_firmware);
1167
1168 static int __init lbs_init_module(void)
1169 {
1170 lbs_deb_enter(LBS_DEB_MAIN);
1171 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1172 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1173 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1174 confirm_sleep.action = cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED);
1175 lbs_debugfs_init();
1176 lbs_deb_leave(LBS_DEB_MAIN);
1177 return 0;
1178 }
1179
1180 static void __exit lbs_exit_module(void)
1181 {
1182 lbs_deb_enter(LBS_DEB_MAIN);
1183 lbs_debugfs_remove();
1184 lbs_deb_leave(LBS_DEB_MAIN);
1185 }
1186
1187 module_init(lbs_init_module);
1188 module_exit(lbs_exit_module);
1189
1190 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1191 MODULE_AUTHOR("Marvell International Ltd.");
1192 MODULE_LICENSE("GPL");
linux-next