2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/etherdevice.h>
10 #include <linux/netdevice.h>
11 #include <linux/if_arp.h>
12 #include <linux/kthread.h>
13 #include <linux/kfifo.h>
14 #include <linux/slab.h>
15 #include <net/cfg80211.h>
24 #define DRIVER_RELEASE_VERSION "323.p0"
25 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
32 /* Module parameters */
33 unsigned int lbs_debug;
34 EXPORT_SYMBOL_GPL(lbs_debug);
35 module_param_named(libertas_debug, lbs_debug, int, 0644);
38 /* This global structure is used to send the confirm_sleep command as
39 * fast as possible down to the firmware. */
40 struct cmd_confirm_sleep confirm_sleep;
44 * the table to keep region code
46 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
47 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
50 * FW rate table. FW refers to rates by their index in this table, not by the
51 * rate value itself. Values of 0x00 are
54 static u8 fw_data_rates[MAX_RATES] =
55 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
56 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
60 * @brief use index to get the data rate
62 * @param idx The index of data rate
63 * @return data rate or 0
65 u32 lbs_fw_index_to_data_rate(u8 idx)
67 if (idx >= sizeof(fw_data_rates))
69 return fw_data_rates[idx];
73 * @brief use rate to get the index
75 * @param rate data rate
78 u8 lbs_data_rate_to_fw_index(u32 rate)
85 for (i = 0; i < sizeof(fw_data_rates); i++) {
86 if (rate == fw_data_rates[i])
94 * @brief This function opens the ethX interface
96 * @param dev A pointer to net_device structure
97 * @return 0 or -EBUSY if monitor mode active
99 static int lbs_dev_open(struct net_device *dev)
101 struct lbs_private *priv = dev->ml_priv;
104 lbs_deb_enter(LBS_DEB_NET);
106 spin_lock_irq(&priv->driver_lock);
108 if (priv->connect_status == LBS_CONNECTED)
109 netif_carrier_on(dev);
111 netif_carrier_off(dev);
113 if (!priv->tx_pending_len)
114 netif_wake_queue(dev);
116 spin_unlock_irq(&priv->driver_lock);
117 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
122 * @brief This function closes the ethX interface
124 * @param dev A pointer to net_device structure
127 static int lbs_eth_stop(struct net_device *dev)
129 struct lbs_private *priv = dev->ml_priv;
131 lbs_deb_enter(LBS_DEB_NET);
133 spin_lock_irq(&priv->driver_lock);
134 netif_stop_queue(dev);
135 spin_unlock_irq(&priv->driver_lock);
137 schedule_work(&priv->mcast_work);
139 lbs_deb_leave(LBS_DEB_NET);
143 static void lbs_tx_timeout(struct net_device *dev)
145 struct lbs_private *priv = dev->ml_priv;
147 lbs_deb_enter(LBS_DEB_TX);
149 lbs_pr_err("tx watch dog timeout\n");
151 dev->trans_start = jiffies; /* prevent tx timeout */
153 if (priv->currenttxskb)
154 lbs_send_tx_feedback(priv, 0);
156 /* XX: Shouldn't we also call into the hw-specific driver
157 to kick it somehow? */
158 lbs_host_to_card_done(priv);
160 /* More often than not, this actually happens because the
161 firmware has crapped itself -- rather than just a very
162 busy medium. So send a harmless command, and if/when
163 _that_ times out, we'll kick it in the head. */
164 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
167 lbs_deb_leave(LBS_DEB_TX);
170 void lbs_host_to_card_done(struct lbs_private *priv)
174 lbs_deb_enter(LBS_DEB_THREAD);
176 spin_lock_irqsave(&priv->driver_lock, flags);
178 priv->dnld_sent = DNLD_RES_RECEIVED;
180 /* Wake main thread if commands are pending */
181 if (!priv->cur_cmd || priv->tx_pending_len > 0) {
182 if (!priv->wakeup_dev_required)
183 wake_up_interruptible(&priv->waitq);
186 spin_unlock_irqrestore(&priv->driver_lock, flags);
187 lbs_deb_leave(LBS_DEB_THREAD);
189 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
191 int lbs_set_mac_address(struct net_device *dev, void *addr)
194 struct lbs_private *priv = dev->ml_priv;
195 struct sockaddr *phwaddr = addr;
196 struct cmd_ds_802_11_mac_address cmd;
198 lbs_deb_enter(LBS_DEB_NET);
200 /* In case it was called from the mesh device */
203 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
204 cmd.action = cpu_to_le16(CMD_ACT_SET);
205 memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
207 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
209 lbs_deb_net("set MAC address failed\n");
213 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
214 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
216 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
219 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
224 static inline int mac_in_list(unsigned char *list, int list_len,
228 if (!memcmp(list, mac, ETH_ALEN))
237 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
238 struct net_device *dev, int nr_addrs)
241 struct netdev_hw_addr *ha;
244 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
247 netif_addr_lock_bh(dev);
248 cnt = netdev_mc_count(dev);
249 netdev_for_each_mc_addr(ha, dev) {
250 if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {
251 lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
257 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
259 memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);
260 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
265 netif_addr_unlock_bh(dev);
272 static void lbs_set_mcast_worker(struct work_struct *work)
274 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
275 struct cmd_ds_mac_multicast_adr mcast_cmd;
278 int old_mac_control = priv->mac_control;
280 lbs_deb_enter(LBS_DEB_NET);
282 dev_flags = priv->dev->flags;
284 dev_flags |= priv->mesh_dev->flags;
286 if (dev_flags & IFF_PROMISC) {
287 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
288 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
289 CMD_ACT_MAC_MULTICAST_ENABLE);
290 goto out_set_mac_control;
291 } else if (dev_flags & IFF_ALLMULTI) {
293 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
294 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
295 CMD_ACT_MAC_MULTICAST_ENABLE);
296 goto out_set_mac_control;
299 /* Once for priv->dev, again for priv->mesh_dev if it exists */
300 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
301 if (nr_addrs >= 0 && priv->mesh_dev)
302 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
307 int size = offsetof(struct cmd_ds_mac_multicast_adr,
308 maclist[6*nr_addrs]);
310 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
311 mcast_cmd.hdr.size = cpu_to_le16(size);
312 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
314 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
316 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
318 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
320 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
321 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
323 if (priv->mac_control != old_mac_control)
324 lbs_set_mac_control(priv);
326 lbs_deb_leave(LBS_DEB_NET);
329 void lbs_set_multicast_list(struct net_device *dev)
331 struct lbs_private *priv = dev->ml_priv;
333 schedule_work(&priv->mcast_work);
337 * @brief This function handles the major jobs in the LBS driver.
338 * It handles all events generated by firmware, RX data received
339 * from firmware and TX data sent from kernel.
341 * @param data A pointer to lbs_thread structure
344 static int lbs_thread(void *data)
346 struct net_device *dev = data;
347 struct lbs_private *priv = dev->ml_priv;
350 lbs_deb_enter(LBS_DEB_THREAD);
352 init_waitqueue_entry(&wait, current);
358 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
359 priv->currenttxskb, priv->dnld_sent);
361 add_wait_queue(&priv->waitq, &wait);
362 set_current_state(TASK_INTERRUPTIBLE);
363 spin_lock_irq(&priv->driver_lock);
365 if (kthread_should_stop())
366 shouldsleep = 0; /* Bye */
367 else if (priv->surpriseremoved)
368 shouldsleep = 1; /* We need to wait until we're _told_ to die */
369 else if (priv->psstate == PS_STATE_SLEEP)
370 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
371 else if (priv->cmd_timed_out)
372 shouldsleep = 0; /* Command timed out. Recover */
373 else if (!priv->fw_ready)
374 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
375 else if (priv->dnld_sent)
376 shouldsleep = 1; /* Something is en route to the device already */
377 else if (priv->tx_pending_len > 0)
378 shouldsleep = 0; /* We've a packet to send */
379 else if (priv->resp_len[priv->resp_idx])
380 shouldsleep = 0; /* We have a command response */
381 else if (priv->cur_cmd)
382 shouldsleep = 1; /* Can't send a command; one already running */
383 else if (!list_empty(&priv->cmdpendingq) &&
384 !(priv->wakeup_dev_required))
385 shouldsleep = 0; /* We have a command to send */
386 else if (kfifo_len(&priv->event_fifo))
387 shouldsleep = 0; /* We have an event to process */
389 shouldsleep = 1; /* No command */
392 lbs_deb_thread("sleeping, connect_status %d, "
393 "psmode %d, psstate %d\n",
394 priv->connect_status,
395 priv->psmode, priv->psstate);
396 spin_unlock_irq(&priv->driver_lock);
399 spin_unlock_irq(&priv->driver_lock);
401 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
402 priv->currenttxskb, priv->dnld_sent);
404 set_current_state(TASK_RUNNING);
405 remove_wait_queue(&priv->waitq, &wait);
407 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
408 priv->currenttxskb, priv->dnld_sent);
410 if (kthread_should_stop()) {
411 lbs_deb_thread("break from main thread\n");
415 if (priv->surpriseremoved) {
416 lbs_deb_thread("adapter removed; waiting to die...\n");
420 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
421 priv->currenttxskb, priv->dnld_sent);
423 /* Process any pending command response */
424 spin_lock_irq(&priv->driver_lock);
425 resp_idx = priv->resp_idx;
426 if (priv->resp_len[resp_idx]) {
427 spin_unlock_irq(&priv->driver_lock);
428 lbs_process_command_response(priv,
429 priv->resp_buf[resp_idx],
430 priv->resp_len[resp_idx]);
431 spin_lock_irq(&priv->driver_lock);
432 priv->resp_len[resp_idx] = 0;
434 spin_unlock_irq(&priv->driver_lock);
436 /* Process hardware events, e.g. card removed, link lost */
437 spin_lock_irq(&priv->driver_lock);
438 while (kfifo_len(&priv->event_fifo)) {
441 if (kfifo_out(&priv->event_fifo,
442 (unsigned char *) &event, sizeof(event)) !=
445 spin_unlock_irq(&priv->driver_lock);
446 lbs_process_event(priv, event);
447 spin_lock_irq(&priv->driver_lock);
449 spin_unlock_irq(&priv->driver_lock);
451 if (priv->wakeup_dev_required) {
452 lbs_deb_thread("Waking up device...\n");
454 if (priv->exit_deep_sleep(priv))
455 lbs_deb_thread("Wakeup device failed\n");
459 /* command timeout stuff */
460 if (priv->cmd_timed_out && priv->cur_cmd) {
461 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
463 lbs_pr_info("Timeout submitting command 0x%04x\n",
464 le16_to_cpu(cmdnode->cmdbuf->command));
465 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
466 if (priv->reset_card)
467 priv->reset_card(priv);
469 priv->cmd_timed_out = 0;
474 /* Check if we need to confirm Sleep Request received previously */
475 if (priv->psstate == PS_STATE_PRE_SLEEP &&
476 !priv->dnld_sent && !priv->cur_cmd) {
477 if (priv->connect_status == LBS_CONNECTED) {
478 lbs_deb_thread("pre-sleep, currenttxskb %p, "
479 "dnld_sent %d, cur_cmd %p\n",
480 priv->currenttxskb, priv->dnld_sent,
483 lbs_ps_confirm_sleep(priv);
485 /* workaround for firmware sending
486 * deauth/linkloss event immediately
487 * after sleep request; remove this
488 * after firmware fixes it
490 priv->psstate = PS_STATE_AWAKE;
491 lbs_pr_alert("ignore PS_SleepConfirm in "
492 "non-connected state\n");
496 /* The PS state is changed during processing of Sleep Request
499 if ((priv->psstate == PS_STATE_SLEEP) ||
500 (priv->psstate == PS_STATE_PRE_SLEEP))
503 if (priv->is_deep_sleep)
506 /* Execute the next command */
507 if (!priv->dnld_sent && !priv->cur_cmd)
508 lbs_execute_next_command(priv);
510 /* Wake-up command waiters which can't sleep in
511 * lbs_prepare_and_send_command
513 if (!list_empty(&priv->cmdpendingq))
514 wake_up_all(&priv->cmd_pending);
516 spin_lock_irq(&priv->driver_lock);
517 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
518 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
519 priv->tx_pending_buf,
520 priv->tx_pending_len);
522 lbs_deb_tx("host_to_card failed %d\n", ret);
523 priv->dnld_sent = DNLD_RES_RECEIVED;
525 priv->tx_pending_len = 0;
526 if (!priv->currenttxskb) {
527 /* We can wake the queues immediately if we aren't
528 waiting for TX feedback */
529 if (priv->connect_status == LBS_CONNECTED)
530 netif_wake_queue(priv->dev);
531 if (priv->mesh_dev &&
532 lbs_mesh_connected(priv))
533 netif_wake_queue(priv->mesh_dev);
536 spin_unlock_irq(&priv->driver_lock);
539 del_timer(&priv->command_timer);
540 del_timer(&priv->auto_deepsleep_timer);
541 wake_up_all(&priv->cmd_pending);
543 lbs_deb_leave(LBS_DEB_THREAD);
547 int lbs_suspend(struct lbs_private *priv)
551 lbs_deb_enter(LBS_DEB_FW);
553 if (priv->is_deep_sleep) {
554 ret = lbs_set_deep_sleep(priv, 0);
556 lbs_pr_err("deep sleep cancellation failed: %d\n", ret);
559 priv->deep_sleep_required = 1;
562 ret = lbs_set_host_sleep(priv, 1);
564 netif_device_detach(priv->dev);
566 netif_device_detach(priv->mesh_dev);
568 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
571 EXPORT_SYMBOL_GPL(lbs_suspend);
573 int lbs_resume(struct lbs_private *priv)
577 lbs_deb_enter(LBS_DEB_FW);
579 ret = lbs_set_host_sleep(priv, 0);
581 netif_device_attach(priv->dev);
583 netif_device_attach(priv->mesh_dev);
585 if (priv->deep_sleep_required) {
586 priv->deep_sleep_required = 0;
587 ret = lbs_set_deep_sleep(priv, 1);
589 lbs_pr_err("deep sleep activation failed: %d\n", ret);
592 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
595 EXPORT_SYMBOL_GPL(lbs_resume);
598 * @brief This function gets the HW spec from the firmware and sets
599 * some basic parameters.
601 * @param priv A pointer to struct lbs_private structure
604 static int lbs_setup_firmware(struct lbs_private *priv)
607 s16 curlevel = 0, minlevel = 0, maxlevel = 0;
609 lbs_deb_enter(LBS_DEB_FW);
611 /* Read MAC address from firmware */
612 memset(priv->current_addr, 0xff, ETH_ALEN);
613 ret = lbs_update_hw_spec(priv);
617 /* Read power levels if available */
618 ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
620 priv->txpower_cur = curlevel;
621 priv->txpower_min = minlevel;
622 priv->txpower_max = maxlevel;
625 /* Send cmd to FW to enable 11D function */
626 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);
628 lbs_set_mac_control(priv);
630 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
635 * This function handles the timeout of command sending.
636 * It will re-send the same command again.
638 static void lbs_cmd_timeout_handler(unsigned long data)
640 struct lbs_private *priv = (struct lbs_private *)data;
643 lbs_deb_enter(LBS_DEB_CMD);
644 spin_lock_irqsave(&priv->driver_lock, flags);
649 lbs_pr_info("command 0x%04x timed out\n",
650 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
652 priv->cmd_timed_out = 1;
653 wake_up_interruptible(&priv->waitq);
655 spin_unlock_irqrestore(&priv->driver_lock, flags);
656 lbs_deb_leave(LBS_DEB_CMD);
660 * This function put the device back to deep sleep mode when timer expires
661 * and no activity (command, event, data etc.) is detected.
663 static void auto_deepsleep_timer_fn(unsigned long data)
665 struct lbs_private *priv = (struct lbs_private *)data;
668 lbs_deb_enter(LBS_DEB_CMD);
670 if (priv->is_activity_detected) {
671 priv->is_activity_detected = 0;
673 if (priv->is_auto_deep_sleep_enabled &&
674 (!priv->wakeup_dev_required) &&
675 (priv->connect_status != LBS_CONNECTED)) {
676 lbs_deb_main("Entering auto deep sleep mode...\n");
677 ret = lbs_prepare_and_send_command(priv,
678 CMD_802_11_DEEP_SLEEP, 0,
681 lbs_pr_err("Enter Deep Sleep command failed\n");
684 mod_timer(&priv->auto_deepsleep_timer , jiffies +
685 (priv->auto_deep_sleep_timeout * HZ)/1000);
686 lbs_deb_leave(LBS_DEB_CMD);
689 int lbs_enter_auto_deep_sleep(struct lbs_private *priv)
691 lbs_deb_enter(LBS_DEB_SDIO);
693 priv->is_auto_deep_sleep_enabled = 1;
694 if (priv->is_deep_sleep)
695 priv->wakeup_dev_required = 1;
696 mod_timer(&priv->auto_deepsleep_timer ,
697 jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);
699 lbs_deb_leave(LBS_DEB_SDIO);
703 int lbs_exit_auto_deep_sleep(struct lbs_private *priv)
705 lbs_deb_enter(LBS_DEB_SDIO);
707 priv->is_auto_deep_sleep_enabled = 0;
708 priv->auto_deep_sleep_timeout = 0;
709 del_timer(&priv->auto_deepsleep_timer);
711 lbs_deb_leave(LBS_DEB_SDIO);
715 static int lbs_init_adapter(struct lbs_private *priv)
719 lbs_deb_enter(LBS_DEB_MAIN);
721 memset(priv->current_addr, 0xff, ETH_ALEN);
723 priv->connect_status = LBS_DISCONNECTED;
724 priv->channel = DEFAULT_AD_HOC_CHANNEL;
725 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
727 priv->psmode = LBS802_11POWERMODECAM;
728 priv->psstate = PS_STATE_FULL_POWER;
729 priv->is_deep_sleep = 0;
730 priv->is_auto_deep_sleep_enabled = 0;
731 priv->deep_sleep_required = 0;
732 priv->wakeup_dev_required = 0;
733 init_waitqueue_head(&priv->ds_awake_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);
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);
745 INIT_LIST_HEAD(&priv->cmdfreeq);
746 INIT_LIST_HEAD(&priv->cmdpendingq);
748 spin_lock_init(&priv->driver_lock);
749 init_waitqueue_head(&priv->cmd_pending);
751 /* Allocate the command buffers */
752 if (lbs_allocate_cmd_buffer(priv)) {
753 lbs_pr_err("Out of memory allocating command buffers\n");
758 priv->resp_len[0] = priv->resp_len[1] = 0;
760 /* Create the event FIFO */
761 ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
763 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
768 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
773 static void lbs_free_adapter(struct lbs_private *priv)
775 lbs_deb_enter(LBS_DEB_MAIN);
777 lbs_free_cmd_buffer(priv);
778 kfifo_free(&priv->event_fifo);
779 del_timer(&priv->command_timer);
780 del_timer(&priv->auto_deepsleep_timer);
782 lbs_deb_leave(LBS_DEB_MAIN);
785 static const struct net_device_ops lbs_netdev_ops = {
786 .ndo_open = lbs_dev_open,
787 .ndo_stop = lbs_eth_stop,
788 .ndo_start_xmit = lbs_hard_start_xmit,
789 .ndo_set_mac_address = lbs_set_mac_address,
790 .ndo_tx_timeout = lbs_tx_timeout,
791 .ndo_set_multicast_list = lbs_set_multicast_list,
792 .ndo_change_mtu = eth_change_mtu,
793 .ndo_validate_addr = eth_validate_addr,
797 * @brief This function adds the card. it will probe the
798 * card, allocate the lbs_priv and initialize the device.
800 * @param card A pointer to card
801 * @return A pointer to struct lbs_private structure
803 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
805 struct net_device *dev;
806 struct wireless_dev *wdev;
807 struct lbs_private *priv = NULL;
809 lbs_deb_enter(LBS_DEB_MAIN);
811 /* Allocate an Ethernet device and register it */
812 wdev = lbs_cfg_alloc(dmdev);
814 lbs_pr_err("cfg80211 init failed\n");
818 wdev->iftype = NL80211_IFTYPE_STATION;
819 priv = wdev_priv(wdev);
822 if (lbs_init_adapter(priv)) {
823 lbs_pr_err("failed to initialize adapter structure.\n");
827 dev = alloc_netdev(0, "wlan%d", ether_setup);
829 dev_err(dmdev, "no memory for network device instance\n");
833 dev->ieee80211_ptr = wdev;
835 SET_NETDEV_DEV(dev, dmdev);
839 dev->netdev_ops = &lbs_netdev_ops;
840 dev->watchdog_timeo = 5 * HZ;
841 dev->ethtool_ops = &lbs_ethtool_ops;
842 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
846 strcpy(dev->name, "wlan%d");
848 lbs_deb_thread("Starting main thread...\n");
849 init_waitqueue_head(&priv->waitq);
850 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
851 if (IS_ERR(priv->main_thread)) {
852 lbs_deb_thread("Error creating main thread.\n");
856 priv->work_thread = create_singlethread_workqueue("lbs_worker");
857 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
859 priv->wol_criteria = 0xffffffff;
860 priv->wol_gpio = 0xff;
869 lbs_free_adapter(priv);
877 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
880 EXPORT_SYMBOL_GPL(lbs_add_card);
883 void lbs_remove_card(struct lbs_private *priv)
885 struct net_device *dev = priv->dev;
887 lbs_deb_enter(LBS_DEB_MAIN);
889 lbs_remove_mesh(priv);
890 lbs_scan_deinit(priv);
894 cancel_work_sync(&priv->mcast_work);
896 /* worker thread destruction blocks on the in-flight command which
897 * should have been cleared already in lbs_stop_card().
899 lbs_deb_main("destroying worker thread\n");
900 destroy_workqueue(priv->work_thread);
901 lbs_deb_main("done destroying worker thread\n");
903 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
904 priv->psmode = LBS802_11POWERMODECAM;
905 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
908 if (priv->is_deep_sleep) {
909 priv->is_deep_sleep = 0;
910 wake_up_interruptible(&priv->ds_awake_q);
913 priv->is_host_sleep_configured = 0;
914 priv->is_host_sleep_activated = 0;
915 wake_up_interruptible(&priv->host_sleep_q);
917 /* Stop the thread servicing the interrupts */
918 priv->surpriseremoved = 1;
919 kthread_stop(priv->main_thread);
921 lbs_free_adapter(priv);
927 lbs_deb_leave(LBS_DEB_MAIN);
929 EXPORT_SYMBOL_GPL(lbs_remove_card);
932 int lbs_rtap_supported(struct lbs_private *priv)
934 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
937 /* newer firmware use a capability mask */
938 return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
939 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));
943 int lbs_start_card(struct lbs_private *priv)
945 struct net_device *dev = priv->dev;
948 lbs_deb_enter(LBS_DEB_MAIN);
950 /* poke the firmware */
951 ret = lbs_setup_firmware(priv);
955 if (lbs_cfg_register(priv)) {
956 lbs_pr_err("cannot register device\n");
960 lbs_update_channel(priv);
964 lbs_debugfs_init_one(priv, dev);
966 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
971 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
974 EXPORT_SYMBOL_GPL(lbs_start_card);
977 void lbs_stop_card(struct lbs_private *priv)
979 struct net_device *dev;
980 struct cmd_ctrl_node *cmdnode;
983 lbs_deb_enter(LBS_DEB_MAIN);
989 netif_stop_queue(dev);
990 netif_carrier_off(dev);
992 lbs_debugfs_remove_one(priv);
993 lbs_deinit_mesh(priv);
995 /* Delete the timeout of the currently processing command */
996 del_timer_sync(&priv->command_timer);
997 del_timer_sync(&priv->auto_deepsleep_timer);
999 /* Flush pending command nodes */
1000 spin_lock_irqsave(&priv->driver_lock, flags);
1001 lbs_deb_main("clearing pending commands\n");
1002 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1003 cmdnode->result = -ENOENT;
1004 cmdnode->cmdwaitqwoken = 1;
1005 wake_up_interruptible(&cmdnode->cmdwait_q);
1008 /* Flush the command the card is currently processing */
1009 if (priv->cur_cmd) {
1010 lbs_deb_main("clearing current command\n");
1011 priv->cur_cmd->result = -ENOENT;
1012 priv->cur_cmd->cmdwaitqwoken = 1;
1013 wake_up_interruptible(&priv->cur_cmd->cmdwait_q);
1015 lbs_deb_main("done clearing commands\n");
1016 spin_unlock_irqrestore(&priv->driver_lock, flags);
1018 unregister_netdev(dev);
1021 lbs_deb_leave(LBS_DEB_MAIN);
1023 EXPORT_SYMBOL_GPL(lbs_stop_card);
1026 void lbs_queue_event(struct lbs_private *priv, u32 event)
1028 unsigned long flags;
1030 lbs_deb_enter(LBS_DEB_THREAD);
1031 spin_lock_irqsave(&priv->driver_lock, flags);
1033 if (priv->psstate == PS_STATE_SLEEP)
1034 priv->psstate = PS_STATE_AWAKE;
1036 kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1038 wake_up_interruptible(&priv->waitq);
1040 spin_unlock_irqrestore(&priv->driver_lock, flags);
1041 lbs_deb_leave(LBS_DEB_THREAD);
1043 EXPORT_SYMBOL_GPL(lbs_queue_event);
1045 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1047 lbs_deb_enter(LBS_DEB_THREAD);
1049 if (priv->psstate == PS_STATE_SLEEP)
1050 priv->psstate = PS_STATE_AWAKE;
1052 /* Swap buffers by flipping the response index */
1053 BUG_ON(resp_idx > 1);
1054 priv->resp_idx = resp_idx;
1056 wake_up_interruptible(&priv->waitq);
1058 lbs_deb_leave(LBS_DEB_THREAD);
1060 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1062 static int __init lbs_init_module(void)
1064 lbs_deb_enter(LBS_DEB_MAIN);
1065 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1066 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1067 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1068 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1070 lbs_deb_leave(LBS_DEB_MAIN);
1074 static void __exit lbs_exit_module(void)
1076 lbs_deb_enter(LBS_DEB_MAIN);
1077 lbs_debugfs_remove();
1078 lbs_deb_leave(LBS_DEB_MAIN);
1081 module_init(lbs_init_module);
1082 module_exit(lbs_exit_module);
1084 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1085 MODULE_AUTHOR("Marvell International Ltd.");
1086 MODULE_LICENSE("GPL");