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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"
28const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
29#ifdef DEBUG
30 "-dbg"
31#endif
32 "";
33
34
35/* Module parameters */
36unsigned int lbs_debug;
37EXPORT_SYMBOL_GPL(lbs_debug);
38module_param_named(libertas_debug, lbs_debug, int, 0644);
39
40unsigned int lbs_disablemesh;
41EXPORT_SYMBOL_GPL(lbs_disablemesh);
42module_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 */
49struct cmd_confirm_sleep confirm_sleep;
50
51
52/*
53 * the table to keep region code
54 */
55u16 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 */
63static 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 */
74u32 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 */
87u8 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 */
108static 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 */
137static 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
159void 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}
178EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
179
180int 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
207done:
208 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
209 return ret;
210}
211
212
213static 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
226static 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
261static 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
318void 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 */
333static 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 */
536static 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);
561done:
562 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
563 return ret;
564}
565
566int 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}
591EXPORT_SYMBOL_GPL(lbs_suspend);
592
593int 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}
619EXPORT_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 */
627static 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);
651out:
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 */
662static 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
688int 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
702int 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
714static 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
766out:
767 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
768
769 return ret;
770}
771
772static 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
784static 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 */
802struct 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
876done:
877 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
878 return priv;
879}
880EXPORT_SYMBOL_GPL(lbs_add_card);
881
882
883void 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}
927EXPORT_SYMBOL_GPL(lbs_remove_card);
928
929
930int 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
941int 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
971done:
972 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
973 return ret;
974}
975EXPORT_SYMBOL_GPL(lbs_start_card);
976
977
978void 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
1021out:
1022 lbs_deb_leave(LBS_DEB_MAIN);
1023}
1024EXPORT_SYMBOL_GPL(lbs_stop_card);
1025
1026
1027void 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}
1044EXPORT_SYMBOL_GPL(lbs_queue_event);
1045
1046void 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}
1061EXPORT_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 */
1078int 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}
1166EXPORT_SYMBOL_GPL(lbs_get_firmware);
1167
1168static 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
1180static 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
1187module_init(lbs_init_module);
1188module_exit(lbs_exit_module);
1189
1190MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1191MODULE_AUTHOR("Marvell International Ltd.");
1192MODULE_LICENSE("GPL");
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/module.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#include "mesh.h"
27
28#define DRIVER_RELEASE_VERSION "323.p0"
29const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
30#ifdef DEBUG
31 "-dbg"
32#endif
33 "";
34
35
36/* Module parameters */
37unsigned int lbs_debug;
38EXPORT_SYMBOL_GPL(lbs_debug);
39module_param_named(libertas_debug, lbs_debug, int, 0644);
40
41unsigned int lbs_disablemesh;
42EXPORT_SYMBOL_GPL(lbs_disablemesh);
43module_param_named(libertas_disablemesh, lbs_disablemesh, int, 0644);
44
45
46/*
47 * This global structure is used to send the confirm_sleep command as
48 * fast as possible down to the firmware.
49 */
50struct cmd_confirm_sleep confirm_sleep;
51
52
53/*
54 * the table to keep region code
55 */
56u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
57 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
58
59/*
60 * FW rate table. FW refers to rates by their index in this table, not by the
61 * rate value itself. Values of 0x00 are
62 * reserved positions.
63 */
64static u8 fw_data_rates[MAX_RATES] =
65 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
66 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
67};
68
69/**
70 * lbs_fw_index_to_data_rate - use index to get the data rate
71 *
72 * @idx: The index of data rate
73 * returns: data rate or 0
74 */
75u32 lbs_fw_index_to_data_rate(u8 idx)
76{
77 if (idx >= sizeof(fw_data_rates))
78 idx = 0;
79 return fw_data_rates[idx];
80}
81
82/**
83 * lbs_data_rate_to_fw_index - use rate to get the index
84 *
85 * @rate: data rate
86 * returns: index or 0
87 */
88u8 lbs_data_rate_to_fw_index(u32 rate)
89{
90 u8 i;
91
92 if (!rate)
93 return 0;
94
95 for (i = 0; i < sizeof(fw_data_rates); i++) {
96 if (rate == fw_data_rates[i])
97 return i;
98 }
99 return 0;
100}
101
102int lbs_set_iface_type(struct lbs_private *priv, enum nl80211_iftype type)
103{
104 int ret = 0;
105
106 switch (type) {
107 case NL80211_IFTYPE_MONITOR:
108 ret = lbs_set_monitor_mode(priv, 1);
109 break;
110 case NL80211_IFTYPE_STATION:
111 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
112 ret = lbs_set_monitor_mode(priv, 0);
113 if (!ret)
114 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
115 break;
116 case NL80211_IFTYPE_ADHOC:
117 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
118 ret = lbs_set_monitor_mode(priv, 0);
119 if (!ret)
120 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
121 break;
122 default:
123 ret = -ENOTSUPP;
124 }
125 return ret;
126}
127
128int lbs_start_iface(struct lbs_private *priv)
129{
130 struct cmd_ds_802_11_mac_address cmd;
131 int ret;
132
133 if (priv->power_restore) {
134 ret = priv->power_restore(priv);
135 if (ret)
136 return ret;
137 }
138
139 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
140 cmd.action = cpu_to_le16(CMD_ACT_SET);
141 memcpy(cmd.macadd, priv->current_addr, ETH_ALEN);
142
143 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
144 if (ret) {
145 lbs_deb_net("set MAC address failed\n");
146 goto err;
147 }
148
149 ret = lbs_set_iface_type(priv, priv->wdev->iftype);
150 if (ret) {
151 lbs_deb_net("set iface type failed\n");
152 goto err;
153 }
154
155 ret = lbs_set_11d_domain_info(priv);
156 if (ret) {
157 lbs_deb_net("set 11d domain info failed\n");
158 goto err;
159 }
160
161 lbs_update_channel(priv);
162
163 priv->iface_running = true;
164 return 0;
165
166err:
167 if (priv->power_save)
168 priv->power_save(priv);
169 return ret;
170}
171
172/**
173 * lbs_dev_open - open the ethX interface
174 *
175 * @dev: A pointer to &net_device structure
176 * returns: 0 or -EBUSY if monitor mode active
177 */
178static int lbs_dev_open(struct net_device *dev)
179{
180 struct lbs_private *priv = dev->ml_priv;
181 int ret = 0;
182
183 lbs_deb_enter(LBS_DEB_NET);
184 if (!priv->iface_running) {
185 ret = lbs_start_iface(priv);
186 if (ret)
187 goto out;
188 }
189
190 spin_lock_irq(&priv->driver_lock);
191
192 netif_carrier_off(dev);
193
194 if (!priv->tx_pending_len)
195 netif_wake_queue(dev);
196
197 spin_unlock_irq(&priv->driver_lock);
198
199out:
200 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
201 return ret;
202}
203
204static bool lbs_command_queue_empty(struct lbs_private *priv)
205{
206 unsigned long flags;
207 bool ret;
208 spin_lock_irqsave(&priv->driver_lock, flags);
209 ret = priv->cur_cmd == NULL && list_empty(&priv->cmdpendingq);
210 spin_unlock_irqrestore(&priv->driver_lock, flags);
211 return ret;
212}
213
214int lbs_stop_iface(struct lbs_private *priv)
215{
216 unsigned long flags;
217 int ret = 0;
218
219 lbs_deb_enter(LBS_DEB_MAIN);
220
221 spin_lock_irqsave(&priv->driver_lock, flags);
222 priv->iface_running = false;
223 kfree_skb(priv->currenttxskb);
224 priv->currenttxskb = NULL;
225 priv->tx_pending_len = 0;
226 spin_unlock_irqrestore(&priv->driver_lock, flags);
227
228 cancel_work_sync(&priv->mcast_work);
229 del_timer_sync(&priv->tx_lockup_timer);
230
231 /* Disable command processing, and wait for all commands to complete */
232 lbs_deb_main("waiting for commands to complete\n");
233 wait_event(priv->waitq, lbs_command_queue_empty(priv));
234 lbs_deb_main("all commands completed\n");
235
236 if (priv->power_save)
237 ret = priv->power_save(priv);
238
239 lbs_deb_leave(LBS_DEB_MAIN);
240 return ret;
241}
242
243/**
244 * lbs_eth_stop - close the ethX interface
245 *
246 * @dev: A pointer to &net_device structure
247 * returns: 0
248 */
249static int lbs_eth_stop(struct net_device *dev)
250{
251 struct lbs_private *priv = dev->ml_priv;
252
253 lbs_deb_enter(LBS_DEB_NET);
254
255 if (priv->connect_status == LBS_CONNECTED)
256 lbs_disconnect(priv, WLAN_REASON_DEAUTH_LEAVING);
257
258 spin_lock_irq(&priv->driver_lock);
259 netif_stop_queue(dev);
260 spin_unlock_irq(&priv->driver_lock);
261
262 lbs_update_mcast(priv);
263 cancel_delayed_work_sync(&priv->scan_work);
264 if (priv->scan_req)
265 lbs_scan_done(priv);
266
267 netif_carrier_off(priv->dev);
268
269 if (!lbs_iface_active(priv))
270 lbs_stop_iface(priv);
271
272 lbs_deb_leave(LBS_DEB_NET);
273 return 0;
274}
275
276void lbs_host_to_card_done(struct lbs_private *priv)
277{
278 unsigned long flags;
279
280 lbs_deb_enter(LBS_DEB_THREAD);
281
282 spin_lock_irqsave(&priv->driver_lock, flags);
283 del_timer(&priv->tx_lockup_timer);
284
285 priv->dnld_sent = DNLD_RES_RECEIVED;
286
287 /* Wake main thread if commands are pending */
288 if (!priv->cur_cmd || priv->tx_pending_len > 0) {
289 if (!priv->wakeup_dev_required)
290 wake_up(&priv->waitq);
291 }
292
293 spin_unlock_irqrestore(&priv->driver_lock, flags);
294 lbs_deb_leave(LBS_DEB_THREAD);
295}
296EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
297
298int lbs_set_mac_address(struct net_device *dev, void *addr)
299{
300 int ret = 0;
301 struct lbs_private *priv = dev->ml_priv;
302 struct sockaddr *phwaddr = addr;
303
304 lbs_deb_enter(LBS_DEB_NET);
305
306 /*
307 * Can only set MAC address when all interfaces are down, to be written
308 * to the hardware when one of them is brought up.
309 */
310 if (lbs_iface_active(priv))
311 return -EBUSY;
312
313 /* In case it was called from the mesh device */
314 dev = priv->dev;
315
316 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
317 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
318 if (priv->mesh_dev)
319 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
320
321 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
322 return ret;
323}
324
325
326static inline int mac_in_list(unsigned char *list, int list_len,
327 unsigned char *mac)
328{
329 while (list_len) {
330 if (!memcmp(list, mac, ETH_ALEN))
331 return 1;
332 list += ETH_ALEN;
333 list_len--;
334 }
335 return 0;
336}
337
338
339static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
340 struct net_device *dev, int nr_addrs)
341{
342 int i = nr_addrs;
343 struct netdev_hw_addr *ha;
344 int cnt;
345
346 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
347 return nr_addrs;
348
349 netif_addr_lock_bh(dev);
350 cnt = netdev_mc_count(dev);
351 netdev_for_each_mc_addr(ha, dev) {
352 if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {
353 lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
354 ha->addr);
355 cnt--;
356 continue;
357 }
358
359 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
360 break;
361 memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);
362 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
363 ha->addr);
364 i++;
365 cnt--;
366 }
367 netif_addr_unlock_bh(dev);
368 if (cnt)
369 return -EOVERFLOW;
370
371 return i;
372}
373
374void lbs_update_mcast(struct lbs_private *priv)
375{
376 struct cmd_ds_mac_multicast_adr mcast_cmd;
377 int dev_flags = 0;
378 int nr_addrs;
379 int old_mac_control = priv->mac_control;
380
381 lbs_deb_enter(LBS_DEB_NET);
382
383 if (netif_running(priv->dev))
384 dev_flags |= priv->dev->flags;
385 if (priv->mesh_dev && netif_running(priv->mesh_dev))
386 dev_flags |= priv->mesh_dev->flags;
387
388 if (dev_flags & IFF_PROMISC) {
389 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
390 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
391 CMD_ACT_MAC_MULTICAST_ENABLE);
392 goto out_set_mac_control;
393 } else if (dev_flags & IFF_ALLMULTI) {
394 do_allmulti:
395 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
396 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
397 CMD_ACT_MAC_MULTICAST_ENABLE);
398 goto out_set_mac_control;
399 }
400
401 /* Once for priv->dev, again for priv->mesh_dev if it exists */
402 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
403 if (nr_addrs >= 0 && priv->mesh_dev)
404 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
405 if (nr_addrs < 0)
406 goto do_allmulti;
407
408 if (nr_addrs) {
409 int size = offsetof(struct cmd_ds_mac_multicast_adr,
410 maclist[6*nr_addrs]);
411
412 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
413 mcast_cmd.hdr.size = cpu_to_le16(size);
414 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
415
416 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
417
418 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
419 } else
420 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
421
422 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
423 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
424 out_set_mac_control:
425 if (priv->mac_control != old_mac_control)
426 lbs_set_mac_control(priv);
427
428 lbs_deb_leave(LBS_DEB_NET);
429}
430
431static void lbs_set_mcast_worker(struct work_struct *work)
432{
433 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
434 lbs_update_mcast(priv);
435}
436
437void lbs_set_multicast_list(struct net_device *dev)
438{
439 struct lbs_private *priv = dev->ml_priv;
440
441 schedule_work(&priv->mcast_work);
442}
443
444/**
445 * lbs_thread - handles the major jobs in the LBS driver.
446 * It handles all events generated by firmware, RX data received
447 * from firmware and TX data sent from kernel.
448 *
449 * @data: A pointer to &lbs_thread structure
450 * returns: 0
451 */
452static int lbs_thread(void *data)
453{
454 struct net_device *dev = data;
455 struct lbs_private *priv = dev->ml_priv;
456 wait_queue_t wait;
457
458 lbs_deb_enter(LBS_DEB_THREAD);
459
460 init_waitqueue_entry(&wait, current);
461
462 for (;;) {
463 int shouldsleep;
464 u8 resp_idx;
465
466 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
467 priv->currenttxskb, priv->dnld_sent);
468
469 add_wait_queue(&priv->waitq, &wait);
470 set_current_state(TASK_INTERRUPTIBLE);
471 spin_lock_irq(&priv->driver_lock);
472
473 if (kthread_should_stop())
474 shouldsleep = 0; /* Bye */
475 else if (priv->surpriseremoved)
476 shouldsleep = 1; /* We need to wait until we're _told_ to die */
477 else if (priv->psstate == PS_STATE_SLEEP)
478 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
479 else if (priv->cmd_timed_out)
480 shouldsleep = 0; /* Command timed out. Recover */
481 else if (!priv->fw_ready)
482 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
483 else if (priv->dnld_sent)
484 shouldsleep = 1; /* Something is en route to the device already */
485 else if (priv->tx_pending_len > 0)
486 shouldsleep = 0; /* We've a packet to send */
487 else if (priv->resp_len[priv->resp_idx])
488 shouldsleep = 0; /* We have a command response */
489 else if (priv->cur_cmd)
490 shouldsleep = 1; /* Can't send a command; one already running */
491 else if (!list_empty(&priv->cmdpendingq) &&
492 !(priv->wakeup_dev_required))
493 shouldsleep = 0; /* We have a command to send */
494 else if (kfifo_len(&priv->event_fifo))
495 shouldsleep = 0; /* We have an event to process */
496 else
497 shouldsleep = 1; /* No command */
498
499 if (shouldsleep) {
500 lbs_deb_thread("sleeping, connect_status %d, "
501 "psmode %d, psstate %d\n",
502 priv->connect_status,
503 priv->psmode, priv->psstate);
504 spin_unlock_irq(&priv->driver_lock);
505 schedule();
506 } else
507 spin_unlock_irq(&priv->driver_lock);
508
509 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
510 priv->currenttxskb, priv->dnld_sent);
511
512 set_current_state(TASK_RUNNING);
513 remove_wait_queue(&priv->waitq, &wait);
514
515 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
516 priv->currenttxskb, priv->dnld_sent);
517
518 if (kthread_should_stop()) {
519 lbs_deb_thread("break from main thread\n");
520 break;
521 }
522
523 if (priv->surpriseremoved) {
524 lbs_deb_thread("adapter removed; waiting to die...\n");
525 continue;
526 }
527
528 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
529 priv->currenttxskb, priv->dnld_sent);
530
531 /* Process any pending command response */
532 spin_lock_irq(&priv->driver_lock);
533 resp_idx = priv->resp_idx;
534 if (priv->resp_len[resp_idx]) {
535 spin_unlock_irq(&priv->driver_lock);
536 lbs_process_command_response(priv,
537 priv->resp_buf[resp_idx],
538 priv->resp_len[resp_idx]);
539 spin_lock_irq(&priv->driver_lock);
540 priv->resp_len[resp_idx] = 0;
541 }
542 spin_unlock_irq(&priv->driver_lock);
543
544 /* Process hardware events, e.g. card removed, link lost */
545 spin_lock_irq(&priv->driver_lock);
546 while (kfifo_len(&priv->event_fifo)) {
547 u32 event;
548
549 if (kfifo_out(&priv->event_fifo,
550 (unsigned char *) &event, sizeof(event)) !=
551 sizeof(event))
552 break;
553 spin_unlock_irq(&priv->driver_lock);
554 lbs_process_event(priv, event);
555 spin_lock_irq(&priv->driver_lock);
556 }
557 spin_unlock_irq(&priv->driver_lock);
558
559 if (priv->wakeup_dev_required) {
560 lbs_deb_thread("Waking up device...\n");
561 /* Wake up device */
562 if (priv->exit_deep_sleep(priv))
563 lbs_deb_thread("Wakeup device failed\n");
564 continue;
565 }
566
567 /* command timeout stuff */
568 if (priv->cmd_timed_out && priv->cur_cmd) {
569 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
570
571 netdev_info(dev, "Timeout submitting command 0x%04x\n",
572 le16_to_cpu(cmdnode->cmdbuf->command));
573 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
574
575 /* Reset card, but only when it isn't in the process
576 * of being shutdown anyway. */
577 if (!dev->dismantle && priv->reset_card)
578 priv->reset_card(priv);
579 }
580 priv->cmd_timed_out = 0;
581
582 if (!priv->fw_ready)
583 continue;
584
585 /* Check if we need to confirm Sleep Request received previously */
586 if (priv->psstate == PS_STATE_PRE_SLEEP &&
587 !priv->dnld_sent && !priv->cur_cmd) {
588 if (priv->connect_status == LBS_CONNECTED) {
589 lbs_deb_thread("pre-sleep, currenttxskb %p, "
590 "dnld_sent %d, cur_cmd %p\n",
591 priv->currenttxskb, priv->dnld_sent,
592 priv->cur_cmd);
593
594 lbs_ps_confirm_sleep(priv);
595 } else {
596 /* workaround for firmware sending
597 * deauth/linkloss event immediately
598 * after sleep request; remove this
599 * after firmware fixes it
600 */
601 priv->psstate = PS_STATE_AWAKE;
602 netdev_alert(dev,
603 "ignore PS_SleepConfirm in non-connected state\n");
604 }
605 }
606
607 /* The PS state is changed during processing of Sleep Request
608 * event above
609 */
610 if ((priv->psstate == PS_STATE_SLEEP) ||
611 (priv->psstate == PS_STATE_PRE_SLEEP))
612 continue;
613
614 if (priv->is_deep_sleep)
615 continue;
616
617 /* Execute the next command */
618 if (!priv->dnld_sent && !priv->cur_cmd)
619 lbs_execute_next_command(priv);
620
621 spin_lock_irq(&priv->driver_lock);
622 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
623 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
624 priv->tx_pending_buf,
625 priv->tx_pending_len);
626 if (ret) {
627 lbs_deb_tx("host_to_card failed %d\n", ret);
628 priv->dnld_sent = DNLD_RES_RECEIVED;
629 } else {
630 mod_timer(&priv->tx_lockup_timer,
631 jiffies + (HZ * 5));
632 }
633 priv->tx_pending_len = 0;
634 if (!priv->currenttxskb) {
635 /* We can wake the queues immediately if we aren't
636 waiting for TX feedback */
637 if (priv->connect_status == LBS_CONNECTED)
638 netif_wake_queue(priv->dev);
639 if (priv->mesh_dev &&
640 netif_running(priv->mesh_dev))
641 netif_wake_queue(priv->mesh_dev);
642 }
643 }
644 spin_unlock_irq(&priv->driver_lock);
645 }
646
647 del_timer(&priv->command_timer);
648 del_timer(&priv->tx_lockup_timer);
649 del_timer(&priv->auto_deepsleep_timer);
650
651 lbs_deb_leave(LBS_DEB_THREAD);
652 return 0;
653}
654
655/**
656 * lbs_setup_firmware - gets the HW spec from the firmware and sets
657 * some basic parameters
658 *
659 * @priv: A pointer to &struct lbs_private structure
660 * returns: 0 or -1
661 */
662static int lbs_setup_firmware(struct lbs_private *priv)
663{
664 int ret = -1;
665 s16 curlevel = 0, minlevel = 0, maxlevel = 0;
666
667 lbs_deb_enter(LBS_DEB_FW);
668
669 /* Read MAC address from firmware */
670 memset(priv->current_addr, 0xff, ETH_ALEN);
671 ret = lbs_update_hw_spec(priv);
672 if (ret)
673 goto done;
674
675 /* Read power levels if available */
676 ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
677 if (ret == 0) {
678 priv->txpower_cur = curlevel;
679 priv->txpower_min = minlevel;
680 priv->txpower_max = maxlevel;
681 }
682
683 /* Send cmd to FW to enable 11D function */
684 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);
685 if (ret)
686 goto done;
687
688 ret = lbs_set_mac_control_sync(priv);
689done:
690 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
691 return ret;
692}
693
694int lbs_suspend(struct lbs_private *priv)
695{
696 int ret;
697
698 lbs_deb_enter(LBS_DEB_FW);
699
700 if (priv->is_deep_sleep) {
701 ret = lbs_set_deep_sleep(priv, 0);
702 if (ret) {
703 netdev_err(priv->dev,
704 "deep sleep cancellation failed: %d\n", ret);
705 return ret;
706 }
707 priv->deep_sleep_required = 1;
708 }
709
710 ret = lbs_set_host_sleep(priv, 1);
711
712 netif_device_detach(priv->dev);
713 if (priv->mesh_dev)
714 netif_device_detach(priv->mesh_dev);
715
716 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
717 return ret;
718}
719EXPORT_SYMBOL_GPL(lbs_suspend);
720
721int lbs_resume(struct lbs_private *priv)
722{
723 int ret;
724
725 lbs_deb_enter(LBS_DEB_FW);
726
727 ret = lbs_set_host_sleep(priv, 0);
728
729 netif_device_attach(priv->dev);
730 if (priv->mesh_dev)
731 netif_device_attach(priv->mesh_dev);
732
733 if (priv->deep_sleep_required) {
734 priv->deep_sleep_required = 0;
735 ret = lbs_set_deep_sleep(priv, 1);
736 if (ret)
737 netdev_err(priv->dev,
738 "deep sleep activation failed: %d\n", ret);
739 }
740
741 if (priv->setup_fw_on_resume)
742 ret = lbs_setup_firmware(priv);
743
744 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
745 return ret;
746}
747EXPORT_SYMBOL_GPL(lbs_resume);
748
749/**
750 * lbs_cmd_timeout_handler - handles the timeout of command sending.
751 * It will re-send the same command again.
752 *
753 * @data: &struct lbs_private pointer
754 */
755static void lbs_cmd_timeout_handler(unsigned long data)
756{
757 struct lbs_private *priv = (struct lbs_private *)data;
758 unsigned long flags;
759
760 lbs_deb_enter(LBS_DEB_CMD);
761 spin_lock_irqsave(&priv->driver_lock, flags);
762
763 if (!priv->cur_cmd)
764 goto out;
765
766 netdev_info(priv->dev, "command 0x%04x timed out\n",
767 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
768
769 priv->cmd_timed_out = 1;
770
771 /*
772 * If the device didn't even acknowledge the command, reset the state
773 * so that we don't block all future commands due to this one timeout.
774 */
775 if (priv->dnld_sent == DNLD_CMD_SENT)
776 priv->dnld_sent = DNLD_RES_RECEIVED;
777
778 wake_up(&priv->waitq);
779out:
780 spin_unlock_irqrestore(&priv->driver_lock, flags);
781 lbs_deb_leave(LBS_DEB_CMD);
782}
783
784/**
785 * lbs_tx_lockup_handler - handles the timeout of the passing of TX frames
786 * to the hardware. This is known to frequently happen with SD8686 when
787 * waking up after a Wake-on-WLAN-triggered resume.
788 *
789 * @data: &struct lbs_private pointer
790 */
791static void lbs_tx_lockup_handler(unsigned long data)
792{
793 struct lbs_private *priv = (struct lbs_private *)data;
794 unsigned long flags;
795
796 lbs_deb_enter(LBS_DEB_TX);
797 spin_lock_irqsave(&priv->driver_lock, flags);
798
799 netdev_info(priv->dev, "TX lockup detected\n");
800 if (priv->reset_card)
801 priv->reset_card(priv);
802
803 priv->dnld_sent = DNLD_RES_RECEIVED;
804 wake_up_interruptible(&priv->waitq);
805
806 spin_unlock_irqrestore(&priv->driver_lock, flags);
807 lbs_deb_leave(LBS_DEB_TX);
808}
809
810/**
811 * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
812 * timer expires and no activity (command, event, data etc.) is detected.
813 * @data: &struct lbs_private pointer
814 * returns: N/A
815 */
816static void auto_deepsleep_timer_fn(unsigned long data)
817{
818 struct lbs_private *priv = (struct lbs_private *)data;
819
820 lbs_deb_enter(LBS_DEB_CMD);
821
822 if (priv->is_activity_detected) {
823 priv->is_activity_detected = 0;
824 } else {
825 if (priv->is_auto_deep_sleep_enabled &&
826 (!priv->wakeup_dev_required) &&
827 (priv->connect_status != LBS_CONNECTED)) {
828 struct cmd_header cmd;
829
830 lbs_deb_main("Entering auto deep sleep mode...\n");
831 memset(&cmd, 0, sizeof(cmd));
832 cmd.size = cpu_to_le16(sizeof(cmd));
833 lbs_cmd_async(priv, CMD_802_11_DEEP_SLEEP, &cmd,
834 sizeof(cmd));
835 }
836 }
837 mod_timer(&priv->auto_deepsleep_timer , jiffies +
838 (priv->auto_deep_sleep_timeout * HZ)/1000);
839 lbs_deb_leave(LBS_DEB_CMD);
840}
841
842int lbs_enter_auto_deep_sleep(struct lbs_private *priv)
843{
844 lbs_deb_enter(LBS_DEB_SDIO);
845
846 priv->is_auto_deep_sleep_enabled = 1;
847 if (priv->is_deep_sleep)
848 priv->wakeup_dev_required = 1;
849 mod_timer(&priv->auto_deepsleep_timer ,
850 jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);
851
852 lbs_deb_leave(LBS_DEB_SDIO);
853 return 0;
854}
855
856int lbs_exit_auto_deep_sleep(struct lbs_private *priv)
857{
858 lbs_deb_enter(LBS_DEB_SDIO);
859
860 priv->is_auto_deep_sleep_enabled = 0;
861 priv->auto_deep_sleep_timeout = 0;
862 del_timer(&priv->auto_deepsleep_timer);
863
864 lbs_deb_leave(LBS_DEB_SDIO);
865 return 0;
866}
867
868static int lbs_init_adapter(struct lbs_private *priv)
869{
870 int ret;
871
872 lbs_deb_enter(LBS_DEB_MAIN);
873
874 memset(priv->current_addr, 0xff, ETH_ALEN);
875
876 priv->connect_status = LBS_DISCONNECTED;
877 priv->channel = DEFAULT_AD_HOC_CHANNEL;
878 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
879 priv->radio_on = 1;
880 priv->psmode = LBS802_11POWERMODECAM;
881 priv->psstate = PS_STATE_FULL_POWER;
882 priv->is_deep_sleep = 0;
883 priv->is_auto_deep_sleep_enabled = 0;
884 priv->deep_sleep_required = 0;
885 priv->wakeup_dev_required = 0;
886 init_waitqueue_head(&priv->ds_awake_q);
887 init_waitqueue_head(&priv->scan_q);
888 priv->authtype_auto = 1;
889 priv->is_host_sleep_configured = 0;
890 priv->is_host_sleep_activated = 0;
891 init_waitqueue_head(&priv->host_sleep_q);
892 init_waitqueue_head(&priv->fw_waitq);
893 mutex_init(&priv->lock);
894
895 setup_timer(&priv->command_timer, lbs_cmd_timeout_handler,
896 (unsigned long)priv);
897 setup_timer(&priv->tx_lockup_timer, lbs_tx_lockup_handler,
898 (unsigned long)priv);
899 setup_timer(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn,
900 (unsigned long)priv);
901
902 INIT_LIST_HEAD(&priv->cmdfreeq);
903 INIT_LIST_HEAD(&priv->cmdpendingq);
904
905 spin_lock_init(&priv->driver_lock);
906
907 /* Allocate the command buffers */
908 if (lbs_allocate_cmd_buffer(priv)) {
909 pr_err("Out of memory allocating command buffers\n");
910 ret = -ENOMEM;
911 goto out;
912 }
913 priv->resp_idx = 0;
914 priv->resp_len[0] = priv->resp_len[1] = 0;
915
916 /* Create the event FIFO */
917 ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
918 if (ret) {
919 pr_err("Out of memory allocating event FIFO buffer\n");
920 goto out;
921 }
922
923out:
924 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
925
926 return ret;
927}
928
929static void lbs_free_adapter(struct lbs_private *priv)
930{
931 lbs_deb_enter(LBS_DEB_MAIN);
932
933 lbs_free_cmd_buffer(priv);
934 kfifo_free(&priv->event_fifo);
935 del_timer(&priv->command_timer);
936 del_timer(&priv->tx_lockup_timer);
937 del_timer(&priv->auto_deepsleep_timer);
938
939 lbs_deb_leave(LBS_DEB_MAIN);
940}
941
942static const struct net_device_ops lbs_netdev_ops = {
943 .ndo_open = lbs_dev_open,
944 .ndo_stop = lbs_eth_stop,
945 .ndo_start_xmit = lbs_hard_start_xmit,
946 .ndo_set_mac_address = lbs_set_mac_address,
947 .ndo_set_rx_mode = lbs_set_multicast_list,
948 .ndo_change_mtu = eth_change_mtu,
949 .ndo_validate_addr = eth_validate_addr,
950};
951
952/**
953 * lbs_add_card - adds the card. It will probe the
954 * card, allocate the lbs_priv and initialize the device.
955 *
956 * @card: A pointer to card
957 * @dmdev: A pointer to &struct device
958 * returns: A pointer to &struct lbs_private structure
959 */
960struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
961{
962 struct net_device *dev;
963 struct wireless_dev *wdev;
964 struct lbs_private *priv = NULL;
965
966 lbs_deb_enter(LBS_DEB_MAIN);
967
968 /* Allocate an Ethernet device and register it */
969 wdev = lbs_cfg_alloc(dmdev);
970 if (IS_ERR(wdev)) {
971 pr_err("cfg80211 init failed\n");
972 goto done;
973 }
974
975 wdev->iftype = NL80211_IFTYPE_STATION;
976 priv = wdev_priv(wdev);
977 priv->wdev = wdev;
978
979 if (lbs_init_adapter(priv)) {
980 pr_err("failed to initialize adapter structure\n");
981 goto err_wdev;
982 }
983
984 dev = alloc_netdev(0, "wlan%d", ether_setup);
985 if (!dev) {
986 dev_err(dmdev, "no memory for network device instance\n");
987 goto err_adapter;
988 }
989
990 dev->ieee80211_ptr = wdev;
991 dev->ml_priv = priv;
992 SET_NETDEV_DEV(dev, dmdev);
993 wdev->netdev = dev;
994 priv->dev = dev;
995
996 dev->netdev_ops = &lbs_netdev_ops;
997 dev->watchdog_timeo = 5 * HZ;
998 dev->ethtool_ops = &lbs_ethtool_ops;
999 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1000
1001 priv->card = card;
1002
1003 strcpy(dev->name, "wlan%d");
1004
1005 lbs_deb_thread("Starting main thread...\n");
1006 init_waitqueue_head(&priv->waitq);
1007 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1008 if (IS_ERR(priv->main_thread)) {
1009 lbs_deb_thread("Error creating main thread.\n");
1010 goto err_ndev;
1011 }
1012
1013 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1014 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1015
1016 priv->wol_criteria = EHS_REMOVE_WAKEUP;
1017 priv->wol_gpio = 0xff;
1018 priv->wol_gap = 20;
1019 priv->ehs_remove_supported = true;
1020
1021 goto done;
1022
1023 err_ndev:
1024 free_netdev(dev);
1025
1026 err_adapter:
1027 lbs_free_adapter(priv);
1028
1029 err_wdev:
1030 lbs_cfg_free(priv);
1031
1032 priv = NULL;
1033
1034done:
1035 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1036 return priv;
1037}
1038EXPORT_SYMBOL_GPL(lbs_add_card);
1039
1040
1041void lbs_remove_card(struct lbs_private *priv)
1042{
1043 struct net_device *dev = priv->dev;
1044
1045 lbs_deb_enter(LBS_DEB_MAIN);
1046
1047 lbs_remove_mesh(priv);
1048
1049 if (priv->wiphy_registered)
1050 lbs_scan_deinit(priv);
1051
1052 lbs_wait_for_firmware_load(priv);
1053
1054 /* worker thread destruction blocks on the in-flight command which
1055 * should have been cleared already in lbs_stop_card().
1056 */
1057 lbs_deb_main("destroying worker thread\n");
1058 destroy_workqueue(priv->work_thread);
1059 lbs_deb_main("done destroying worker thread\n");
1060
1061 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1062 priv->psmode = LBS802_11POWERMODECAM;
1063 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, true);
1064 }
1065
1066 if (priv->is_deep_sleep) {
1067 priv->is_deep_sleep = 0;
1068 wake_up_interruptible(&priv->ds_awake_q);
1069 }
1070
1071 priv->is_host_sleep_configured = 0;
1072 priv->is_host_sleep_activated = 0;
1073 wake_up_interruptible(&priv->host_sleep_q);
1074
1075 /* Stop the thread servicing the interrupts */
1076 priv->surpriseremoved = 1;
1077 kthread_stop(priv->main_thread);
1078
1079 lbs_free_adapter(priv);
1080 lbs_cfg_free(priv);
1081 free_netdev(dev);
1082
1083 lbs_deb_leave(LBS_DEB_MAIN);
1084}
1085EXPORT_SYMBOL_GPL(lbs_remove_card);
1086
1087
1088int lbs_rtap_supported(struct lbs_private *priv)
1089{
1090 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
1091 return 1;
1092
1093 /* newer firmware use a capability mask */
1094 return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
1095 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));
1096}
1097
1098
1099int lbs_start_card(struct lbs_private *priv)
1100{
1101 struct net_device *dev = priv->dev;
1102 int ret = -1;
1103
1104 lbs_deb_enter(LBS_DEB_MAIN);
1105
1106 /* poke the firmware */
1107 ret = lbs_setup_firmware(priv);
1108 if (ret)
1109 goto done;
1110
1111 if (!lbs_disablemesh)
1112 lbs_init_mesh(priv);
1113 else
1114 pr_info("%s: mesh disabled\n", dev->name);
1115
1116 if (lbs_cfg_register(priv)) {
1117 pr_err("cannot register device\n");
1118 goto done;
1119 }
1120
1121 if (lbs_mesh_activated(priv))
1122 lbs_start_mesh(priv);
1123
1124 lbs_debugfs_init_one(priv, dev);
1125
1126 netdev_info(dev, "Marvell WLAN 802.11 adapter\n");
1127
1128 ret = 0;
1129
1130done:
1131 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1132 return ret;
1133}
1134EXPORT_SYMBOL_GPL(lbs_start_card);
1135
1136
1137void lbs_stop_card(struct lbs_private *priv)
1138{
1139 struct net_device *dev;
1140
1141 lbs_deb_enter(LBS_DEB_MAIN);
1142
1143 if (!priv)
1144 goto out;
1145 dev = priv->dev;
1146
1147 /* If the netdev isn't registered, it means that lbs_start_card() was
1148 * never called so we have nothing to do here. */
1149 if (dev->reg_state != NETREG_REGISTERED)
1150 goto out;
1151
1152 netif_stop_queue(dev);
1153 netif_carrier_off(dev);
1154
1155 lbs_debugfs_remove_one(priv);
1156 lbs_deinit_mesh(priv);
1157 unregister_netdev(dev);
1158
1159out:
1160 lbs_deb_leave(LBS_DEB_MAIN);
1161}
1162EXPORT_SYMBOL_GPL(lbs_stop_card);
1163
1164
1165void lbs_queue_event(struct lbs_private *priv, u32 event)
1166{
1167 unsigned long flags;
1168
1169 lbs_deb_enter(LBS_DEB_THREAD);
1170 spin_lock_irqsave(&priv->driver_lock, flags);
1171
1172 if (priv->psstate == PS_STATE_SLEEP)
1173 priv->psstate = PS_STATE_AWAKE;
1174
1175 kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1176
1177 wake_up(&priv->waitq);
1178
1179 spin_unlock_irqrestore(&priv->driver_lock, flags);
1180 lbs_deb_leave(LBS_DEB_THREAD);
1181}
1182EXPORT_SYMBOL_GPL(lbs_queue_event);
1183
1184void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1185{
1186 lbs_deb_enter(LBS_DEB_THREAD);
1187
1188 if (priv->psstate == PS_STATE_SLEEP)
1189 priv->psstate = PS_STATE_AWAKE;
1190
1191 /* Swap buffers by flipping the response index */
1192 BUG_ON(resp_idx > 1);
1193 priv->resp_idx = resp_idx;
1194
1195 wake_up(&priv->waitq);
1196
1197 lbs_deb_leave(LBS_DEB_THREAD);
1198}
1199EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1200
1201static int __init lbs_init_module(void)
1202{
1203 lbs_deb_enter(LBS_DEB_MAIN);
1204 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1205 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1206 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1207 confirm_sleep.action = cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED);
1208 lbs_debugfs_init();
1209 lbs_deb_leave(LBS_DEB_MAIN);
1210 return 0;
1211}
1212
1213static void __exit lbs_exit_module(void)
1214{
1215 lbs_deb_enter(LBS_DEB_MAIN);
1216 lbs_debugfs_remove();
1217 lbs_deb_leave(LBS_DEB_MAIN);
1218}
1219
1220module_init(lbs_init_module);
1221module_exit(lbs_exit_module);
1222
1223MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1224MODULE_AUTHOR("Marvell International Ltd.");
1225MODULE_LICENSE("GPL");