2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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>
28 #define DRIVER_RELEASE_VERSION "323.p0"
29 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
36 /* Module parameters */
37 unsigned int lbs_debug;
38 EXPORT_SYMBOL_GPL(lbs_debug);
39 module_param_named(libertas_debug, lbs_debug, int, 0644);
41 unsigned int lbs_disablemesh;
42 EXPORT_SYMBOL_GPL(lbs_disablemesh);
43 module_param_named(libertas_disablemesh, lbs_disablemesh, int, 0644);
47 * This global structure is used to send the confirm_sleep command as
48 * fast as possible down to the firmware.
50 struct cmd_confirm_sleep confirm_sleep;
54 * the table to keep region code
56 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
57 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
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
64 static u8 fw_data_rates[MAX_RATES] =
65 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
66 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
70 * lbs_fw_index_to_data_rate - use index to get the data rate
72 * @idx: The index of data rate
73 * returns: data rate or 0
75 u32 lbs_fw_index_to_data_rate(u8 idx)
77 if (idx >= sizeof(fw_data_rates))
79 return fw_data_rates[idx];
83 * lbs_data_rate_to_fw_index - use rate to get the index
88 u8 lbs_data_rate_to_fw_index(u32 rate)
95 for (i = 0; i < sizeof(fw_data_rates); i++) {
96 if (rate == fw_data_rates[i])
102 int lbs_start_iface(struct lbs_private *priv)
104 struct cmd_ds_802_11_mac_address cmd;
107 if (priv->power_restore) {
108 ret = priv->power_restore(priv);
113 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
114 cmd.action = cpu_to_le16(CMD_ACT_SET);
115 memcpy(cmd.macadd, priv->current_addr, ETH_ALEN);
117 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
119 lbs_deb_net("set MAC address failed\n");
123 lbs_update_channel(priv);
125 priv->iface_running = true;
129 if (priv->power_save)
130 priv->power_save(priv);
135 * lbs_dev_open - open the ethX interface
137 * @dev: A pointer to &net_device structure
138 * returns: 0 or -EBUSY if monitor mode active
140 static int lbs_dev_open(struct net_device *dev)
142 struct lbs_private *priv = dev->ml_priv;
145 lbs_deb_enter(LBS_DEB_NET);
146 if (!priv->iface_running) {
147 ret = lbs_start_iface(priv);
152 spin_lock_irq(&priv->driver_lock);
154 netif_carrier_off(dev);
156 if (!priv->tx_pending_len)
157 netif_wake_queue(dev);
159 spin_unlock_irq(&priv->driver_lock);
162 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
166 static bool lbs_command_queue_empty(struct lbs_private *priv)
170 spin_lock_irqsave(&priv->driver_lock, flags);
171 ret = priv->cur_cmd == NULL && list_empty(&priv->cmdpendingq);
172 spin_unlock_irqrestore(&priv->driver_lock, flags);
176 int lbs_stop_iface(struct lbs_private *priv)
181 lbs_deb_enter(LBS_DEB_MAIN);
183 spin_lock_irqsave(&priv->driver_lock, flags);
184 priv->iface_running = false;
185 kfree_skb(priv->currenttxskb);
186 priv->currenttxskb = NULL;
187 priv->tx_pending_len = 0;
188 spin_unlock_irqrestore(&priv->driver_lock, flags);
190 cancel_work_sync(&priv->mcast_work);
191 del_timer_sync(&priv->tx_lockup_timer);
193 /* Disable command processing, and wait for all commands to complete */
194 lbs_deb_main("waiting for commands to complete\n");
195 wait_event(priv->waitq, lbs_command_queue_empty(priv));
196 lbs_deb_main("all commands completed\n");
198 if (priv->power_save)
199 ret = priv->power_save(priv);
201 lbs_deb_leave(LBS_DEB_MAIN);
206 * lbs_eth_stop - close the ethX interface
208 * @dev: A pointer to &net_device structure
211 static int lbs_eth_stop(struct net_device *dev)
213 struct lbs_private *priv = dev->ml_priv;
215 lbs_deb_enter(LBS_DEB_NET);
217 if (priv->connect_status == LBS_CONNECTED)
218 lbs_disconnect(priv, WLAN_REASON_DEAUTH_LEAVING);
220 spin_lock_irq(&priv->driver_lock);
221 netif_stop_queue(dev);
222 spin_unlock_irq(&priv->driver_lock);
224 lbs_update_mcast(priv);
225 cancel_delayed_work_sync(&priv->scan_work);
226 if (priv->scan_req) {
227 cfg80211_scan_done(priv->scan_req, false);
228 priv->scan_req = NULL;
231 netif_carrier_off(priv->dev);
233 if (!lbs_iface_active(priv))
234 lbs_stop_iface(priv);
236 lbs_deb_leave(LBS_DEB_NET);
240 void lbs_host_to_card_done(struct lbs_private *priv)
244 lbs_deb_enter(LBS_DEB_THREAD);
246 spin_lock_irqsave(&priv->driver_lock, flags);
247 del_timer(&priv->tx_lockup_timer);
249 priv->dnld_sent = DNLD_RES_RECEIVED;
251 /* Wake main thread if commands are pending */
252 if (!priv->cur_cmd || priv->tx_pending_len > 0) {
253 if (!priv->wakeup_dev_required)
254 wake_up(&priv->waitq);
257 spin_unlock_irqrestore(&priv->driver_lock, flags);
258 lbs_deb_leave(LBS_DEB_THREAD);
260 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
262 int lbs_set_mac_address(struct net_device *dev, void *addr)
265 struct lbs_private *priv = dev->ml_priv;
266 struct sockaddr *phwaddr = addr;
268 lbs_deb_enter(LBS_DEB_NET);
271 * Can only set MAC address when all interfaces are down, to be written
272 * to the hardware when one of them is brought up.
274 if (lbs_iface_active(priv))
277 /* In case it was called from the mesh device */
280 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
281 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
283 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
285 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
290 static inline int mac_in_list(unsigned char *list, int list_len,
294 if (!memcmp(list, mac, ETH_ALEN))
303 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
304 struct net_device *dev, int nr_addrs)
307 struct netdev_hw_addr *ha;
310 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
313 netif_addr_lock_bh(dev);
314 cnt = netdev_mc_count(dev);
315 netdev_for_each_mc_addr(ha, dev) {
316 if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {
317 lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
323 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
325 memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);
326 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
331 netif_addr_unlock_bh(dev);
338 void lbs_update_mcast(struct lbs_private *priv)
340 struct cmd_ds_mac_multicast_adr mcast_cmd;
343 int old_mac_control = priv->mac_control;
345 lbs_deb_enter(LBS_DEB_NET);
347 if (netif_running(priv->dev))
348 dev_flags |= priv->dev->flags;
349 if (priv->mesh_dev && netif_running(priv->mesh_dev))
350 dev_flags |= priv->mesh_dev->flags;
352 if (dev_flags & IFF_PROMISC) {
353 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
354 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
355 CMD_ACT_MAC_MULTICAST_ENABLE);
356 goto out_set_mac_control;
357 } else if (dev_flags & IFF_ALLMULTI) {
359 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
360 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
361 CMD_ACT_MAC_MULTICAST_ENABLE);
362 goto out_set_mac_control;
365 /* Once for priv->dev, again for priv->mesh_dev if it exists */
366 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
367 if (nr_addrs >= 0 && priv->mesh_dev)
368 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
373 int size = offsetof(struct cmd_ds_mac_multicast_adr,
374 maclist[6*nr_addrs]);
376 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
377 mcast_cmd.hdr.size = cpu_to_le16(size);
378 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
380 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
382 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
384 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
386 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
387 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
389 if (priv->mac_control != old_mac_control)
390 lbs_set_mac_control(priv);
392 lbs_deb_leave(LBS_DEB_NET);
395 static void lbs_set_mcast_worker(struct work_struct *work)
397 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
398 lbs_update_mcast(priv);
401 void lbs_set_multicast_list(struct net_device *dev)
403 struct lbs_private *priv = dev->ml_priv;
405 schedule_work(&priv->mcast_work);
409 * lbs_thread - handles the major jobs in the LBS driver.
410 * It handles all events generated by firmware, RX data received
411 * from firmware and TX data sent from kernel.
413 * @data: A pointer to &lbs_thread structure
416 static int lbs_thread(void *data)
418 struct net_device *dev = data;
419 struct lbs_private *priv = dev->ml_priv;
422 lbs_deb_enter(LBS_DEB_THREAD);
424 init_waitqueue_entry(&wait, current);
430 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
431 priv->currenttxskb, priv->dnld_sent);
433 add_wait_queue(&priv->waitq, &wait);
434 set_current_state(TASK_INTERRUPTIBLE);
435 spin_lock_irq(&priv->driver_lock);
437 if (kthread_should_stop())
438 shouldsleep = 0; /* Bye */
439 else if (priv->surpriseremoved)
440 shouldsleep = 1; /* We need to wait until we're _told_ to die */
441 else if (priv->psstate == PS_STATE_SLEEP)
442 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
443 else if (priv->cmd_timed_out)
444 shouldsleep = 0; /* Command timed out. Recover */
445 else if (!priv->fw_ready)
446 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
447 else if (priv->dnld_sent)
448 shouldsleep = 1; /* Something is en route to the device already */
449 else if (priv->tx_pending_len > 0)
450 shouldsleep = 0; /* We've a packet to send */
451 else if (priv->resp_len[priv->resp_idx])
452 shouldsleep = 0; /* We have a command response */
453 else if (priv->cur_cmd)
454 shouldsleep = 1; /* Can't send a command; one already running */
455 else if (!list_empty(&priv->cmdpendingq) &&
456 !(priv->wakeup_dev_required))
457 shouldsleep = 0; /* We have a command to send */
458 else if (kfifo_len(&priv->event_fifo))
459 shouldsleep = 0; /* We have an event to process */
461 shouldsleep = 1; /* No command */
464 lbs_deb_thread("sleeping, connect_status %d, "
465 "psmode %d, psstate %d\n",
466 priv->connect_status,
467 priv->psmode, priv->psstate);
468 spin_unlock_irq(&priv->driver_lock);
471 spin_unlock_irq(&priv->driver_lock);
473 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
474 priv->currenttxskb, priv->dnld_sent);
476 set_current_state(TASK_RUNNING);
477 remove_wait_queue(&priv->waitq, &wait);
479 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
480 priv->currenttxskb, priv->dnld_sent);
482 if (kthread_should_stop()) {
483 lbs_deb_thread("break from main thread\n");
487 if (priv->surpriseremoved) {
488 lbs_deb_thread("adapter removed; waiting to die...\n");
492 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
493 priv->currenttxskb, priv->dnld_sent);
495 /* Process any pending command response */
496 spin_lock_irq(&priv->driver_lock);
497 resp_idx = priv->resp_idx;
498 if (priv->resp_len[resp_idx]) {
499 spin_unlock_irq(&priv->driver_lock);
500 lbs_process_command_response(priv,
501 priv->resp_buf[resp_idx],
502 priv->resp_len[resp_idx]);
503 spin_lock_irq(&priv->driver_lock);
504 priv->resp_len[resp_idx] = 0;
506 spin_unlock_irq(&priv->driver_lock);
508 /* Process hardware events, e.g. card removed, link lost */
509 spin_lock_irq(&priv->driver_lock);
510 while (kfifo_len(&priv->event_fifo)) {
513 if (kfifo_out(&priv->event_fifo,
514 (unsigned char *) &event, sizeof(event)) !=
517 spin_unlock_irq(&priv->driver_lock);
518 lbs_process_event(priv, event);
519 spin_lock_irq(&priv->driver_lock);
521 spin_unlock_irq(&priv->driver_lock);
523 if (priv->wakeup_dev_required) {
524 lbs_deb_thread("Waking up device...\n");
526 if (priv->exit_deep_sleep(priv))
527 lbs_deb_thread("Wakeup device failed\n");
531 /* command timeout stuff */
532 if (priv->cmd_timed_out && priv->cur_cmd) {
533 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
535 netdev_info(dev, "Timeout submitting command 0x%04x\n",
536 le16_to_cpu(cmdnode->cmdbuf->command));
537 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
538 if (priv->reset_card)
539 priv->reset_card(priv);
541 priv->cmd_timed_out = 0;
546 /* Check if we need to confirm Sleep Request received previously */
547 if (priv->psstate == PS_STATE_PRE_SLEEP &&
548 !priv->dnld_sent && !priv->cur_cmd) {
549 if (priv->connect_status == LBS_CONNECTED) {
550 lbs_deb_thread("pre-sleep, currenttxskb %p, "
551 "dnld_sent %d, cur_cmd %p\n",
552 priv->currenttxskb, priv->dnld_sent,
555 lbs_ps_confirm_sleep(priv);
557 /* workaround for firmware sending
558 * deauth/linkloss event immediately
559 * after sleep request; remove this
560 * after firmware fixes it
562 priv->psstate = PS_STATE_AWAKE;
564 "ignore PS_SleepConfirm in non-connected state\n");
568 /* The PS state is changed during processing of Sleep Request
571 if ((priv->psstate == PS_STATE_SLEEP) ||
572 (priv->psstate == PS_STATE_PRE_SLEEP))
575 if (priv->is_deep_sleep)
578 /* Execute the next command */
579 if (!priv->dnld_sent && !priv->cur_cmd)
580 lbs_execute_next_command(priv);
582 spin_lock_irq(&priv->driver_lock);
583 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
584 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
585 priv->tx_pending_buf,
586 priv->tx_pending_len);
588 lbs_deb_tx("host_to_card failed %d\n", ret);
589 priv->dnld_sent = DNLD_RES_RECEIVED;
591 mod_timer(&priv->tx_lockup_timer,
594 priv->tx_pending_len = 0;
595 if (!priv->currenttxskb) {
596 /* We can wake the queues immediately if we aren't
597 waiting for TX feedback */
598 if (priv->connect_status == LBS_CONNECTED)
599 netif_wake_queue(priv->dev);
600 if (priv->mesh_dev &&
601 netif_running(priv->mesh_dev))
602 netif_wake_queue(priv->mesh_dev);
605 spin_unlock_irq(&priv->driver_lock);
608 del_timer(&priv->command_timer);
609 del_timer(&priv->tx_lockup_timer);
610 del_timer(&priv->auto_deepsleep_timer);
612 lbs_deb_leave(LBS_DEB_THREAD);
617 * lbs_setup_firmware - gets the HW spec from the firmware and sets
618 * some basic parameters
620 * @priv: A pointer to &struct lbs_private structure
623 static int lbs_setup_firmware(struct lbs_private *priv)
626 s16 curlevel = 0, minlevel = 0, maxlevel = 0;
628 lbs_deb_enter(LBS_DEB_FW);
630 /* Read MAC address from firmware */
631 memset(priv->current_addr, 0xff, ETH_ALEN);
632 ret = lbs_update_hw_spec(priv);
636 /* Read power levels if available */
637 ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
639 priv->txpower_cur = curlevel;
640 priv->txpower_min = minlevel;
641 priv->txpower_max = maxlevel;
644 /* Send cmd to FW to enable 11D function */
645 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);
647 lbs_set_mac_control(priv);
649 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
653 int lbs_suspend(struct lbs_private *priv)
657 lbs_deb_enter(LBS_DEB_FW);
659 if (priv->is_deep_sleep) {
660 ret = lbs_set_deep_sleep(priv, 0);
662 netdev_err(priv->dev,
663 "deep sleep cancellation failed: %d\n", ret);
666 priv->deep_sleep_required = 1;
669 ret = lbs_set_host_sleep(priv, 1);
671 netif_device_detach(priv->dev);
673 netif_device_detach(priv->mesh_dev);
675 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
678 EXPORT_SYMBOL_GPL(lbs_suspend);
680 int lbs_resume(struct lbs_private *priv)
684 lbs_deb_enter(LBS_DEB_FW);
686 ret = lbs_set_host_sleep(priv, 0);
688 netif_device_attach(priv->dev);
690 netif_device_attach(priv->mesh_dev);
692 if (priv->deep_sleep_required) {
693 priv->deep_sleep_required = 0;
694 ret = lbs_set_deep_sleep(priv, 1);
696 netdev_err(priv->dev,
697 "deep sleep activation failed: %d\n", ret);
700 if (priv->setup_fw_on_resume)
701 ret = lbs_setup_firmware(priv);
703 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
706 EXPORT_SYMBOL_GPL(lbs_resume);
709 * lbs_cmd_timeout_handler - handles the timeout of command sending.
710 * It will re-send the same command again.
712 * @data: &struct lbs_private pointer
714 static void lbs_cmd_timeout_handler(unsigned long data)
716 struct lbs_private *priv = (struct lbs_private *)data;
719 lbs_deb_enter(LBS_DEB_CMD);
720 spin_lock_irqsave(&priv->driver_lock, flags);
725 netdev_info(priv->dev, "command 0x%04x timed out\n",
726 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
728 priv->cmd_timed_out = 1;
731 * If the device didn't even acknowledge the command, reset the state
732 * so that we don't block all future commands due to this one timeout.
734 if (priv->dnld_sent == DNLD_CMD_SENT)
735 priv->dnld_sent = DNLD_RES_RECEIVED;
737 wake_up(&priv->waitq);
739 spin_unlock_irqrestore(&priv->driver_lock, flags);
740 lbs_deb_leave(LBS_DEB_CMD);
744 * lbs_tx_lockup_handler - handles the timeout of the passing of TX frames
745 * to the hardware. This is known to frequently happen with SD8686 when
746 * waking up after a Wake-on-WLAN-triggered resume.
748 * @data: &struct lbs_private pointer
750 static void lbs_tx_lockup_handler(unsigned long data)
752 struct lbs_private *priv = (struct lbs_private *)data;
755 lbs_deb_enter(LBS_DEB_TX);
756 spin_lock_irqsave(&priv->driver_lock, flags);
758 netdev_info(priv->dev, "TX lockup detected\n");
759 if (priv->reset_card)
760 priv->reset_card(priv);
762 priv->dnld_sent = DNLD_RES_RECEIVED;
763 wake_up_interruptible(&priv->waitq);
765 spin_unlock_irqrestore(&priv->driver_lock, flags);
766 lbs_deb_leave(LBS_DEB_TX);
770 * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
771 * timer expires and no activity (command, event, data etc.) is detected.
772 * @data: &struct lbs_private pointer
775 static void auto_deepsleep_timer_fn(unsigned long data)
777 struct lbs_private *priv = (struct lbs_private *)data;
779 lbs_deb_enter(LBS_DEB_CMD);
781 if (priv->is_activity_detected) {
782 priv->is_activity_detected = 0;
784 if (priv->is_auto_deep_sleep_enabled &&
785 (!priv->wakeup_dev_required) &&
786 (priv->connect_status != LBS_CONNECTED)) {
787 struct cmd_header cmd;
789 lbs_deb_main("Entering auto deep sleep mode...\n");
790 memset(&cmd, 0, sizeof(cmd));
791 cmd.size = cpu_to_le16(sizeof(cmd));
792 lbs_cmd_async(priv, CMD_802_11_DEEP_SLEEP, &cmd,
796 mod_timer(&priv->auto_deepsleep_timer , jiffies +
797 (priv->auto_deep_sleep_timeout * HZ)/1000);
798 lbs_deb_leave(LBS_DEB_CMD);
801 int lbs_enter_auto_deep_sleep(struct lbs_private *priv)
803 lbs_deb_enter(LBS_DEB_SDIO);
805 priv->is_auto_deep_sleep_enabled = 1;
806 if (priv->is_deep_sleep)
807 priv->wakeup_dev_required = 1;
808 mod_timer(&priv->auto_deepsleep_timer ,
809 jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);
811 lbs_deb_leave(LBS_DEB_SDIO);
815 int lbs_exit_auto_deep_sleep(struct lbs_private *priv)
817 lbs_deb_enter(LBS_DEB_SDIO);
819 priv->is_auto_deep_sleep_enabled = 0;
820 priv->auto_deep_sleep_timeout = 0;
821 del_timer(&priv->auto_deepsleep_timer);
823 lbs_deb_leave(LBS_DEB_SDIO);
827 static int lbs_init_adapter(struct lbs_private *priv)
831 lbs_deb_enter(LBS_DEB_MAIN);
833 memset(priv->current_addr, 0xff, ETH_ALEN);
835 priv->connect_status = LBS_DISCONNECTED;
836 priv->channel = DEFAULT_AD_HOC_CHANNEL;
837 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
839 priv->psmode = LBS802_11POWERMODECAM;
840 priv->psstate = PS_STATE_FULL_POWER;
841 priv->is_deep_sleep = 0;
842 priv->is_auto_deep_sleep_enabled = 0;
843 priv->deep_sleep_required = 0;
844 priv->wakeup_dev_required = 0;
845 init_waitqueue_head(&priv->ds_awake_q);
846 init_waitqueue_head(&priv->scan_q);
847 priv->authtype_auto = 1;
848 priv->is_host_sleep_configured = 0;
849 priv->is_host_sleep_activated = 0;
850 init_waitqueue_head(&priv->host_sleep_q);
851 mutex_init(&priv->lock);
853 setup_timer(&priv->command_timer, lbs_cmd_timeout_handler,
854 (unsigned long)priv);
855 setup_timer(&priv->tx_lockup_timer, lbs_tx_lockup_handler,
856 (unsigned long)priv);
857 setup_timer(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn,
858 (unsigned long)priv);
860 INIT_LIST_HEAD(&priv->cmdfreeq);
861 INIT_LIST_HEAD(&priv->cmdpendingq);
863 spin_lock_init(&priv->driver_lock);
865 /* Allocate the command buffers */
866 if (lbs_allocate_cmd_buffer(priv)) {
867 pr_err("Out of memory allocating command buffers\n");
872 priv->resp_len[0] = priv->resp_len[1] = 0;
874 /* Create the event FIFO */
875 ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
877 pr_err("Out of memory allocating event FIFO buffer\n");
882 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
887 static void lbs_free_adapter(struct lbs_private *priv)
889 lbs_deb_enter(LBS_DEB_MAIN);
891 lbs_free_cmd_buffer(priv);
892 kfifo_free(&priv->event_fifo);
893 del_timer(&priv->command_timer);
894 del_timer(&priv->tx_lockup_timer);
895 del_timer(&priv->auto_deepsleep_timer);
897 lbs_deb_leave(LBS_DEB_MAIN);
900 static const struct net_device_ops lbs_netdev_ops = {
901 .ndo_open = lbs_dev_open,
902 .ndo_stop = lbs_eth_stop,
903 .ndo_start_xmit = lbs_hard_start_xmit,
904 .ndo_set_mac_address = lbs_set_mac_address,
905 .ndo_set_rx_mode = lbs_set_multicast_list,
906 .ndo_change_mtu = eth_change_mtu,
907 .ndo_validate_addr = eth_validate_addr,
911 * lbs_add_card - adds the card. It will probe the
912 * card, allocate the lbs_priv and initialize the device.
914 * @card: A pointer to card
915 * @dmdev: A pointer to &struct device
916 * returns: A pointer to &struct lbs_private structure
918 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
920 struct net_device *dev;
921 struct wireless_dev *wdev;
922 struct lbs_private *priv = NULL;
924 lbs_deb_enter(LBS_DEB_MAIN);
926 /* Allocate an Ethernet device and register it */
927 wdev = lbs_cfg_alloc(dmdev);
929 pr_err("cfg80211 init failed\n");
933 wdev->iftype = NL80211_IFTYPE_STATION;
934 priv = wdev_priv(wdev);
937 if (lbs_init_adapter(priv)) {
938 pr_err("failed to initialize adapter structure\n");
942 dev = alloc_netdev(0, "wlan%d", ether_setup);
944 dev_err(dmdev, "no memory for network device instance\n");
948 dev->ieee80211_ptr = wdev;
950 SET_NETDEV_DEV(dev, dmdev);
954 dev->netdev_ops = &lbs_netdev_ops;
955 dev->watchdog_timeo = 5 * HZ;
956 dev->ethtool_ops = &lbs_ethtool_ops;
957 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
961 strcpy(dev->name, "wlan%d");
963 lbs_deb_thread("Starting main thread...\n");
964 init_waitqueue_head(&priv->waitq);
965 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
966 if (IS_ERR(priv->main_thread)) {
967 lbs_deb_thread("Error creating main thread.\n");
971 priv->work_thread = create_singlethread_workqueue("lbs_worker");
972 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
974 priv->wol_criteria = EHS_REMOVE_WAKEUP;
975 priv->wol_gpio = 0xff;
977 priv->ehs_remove_supported = true;
985 lbs_free_adapter(priv);
993 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
996 EXPORT_SYMBOL_GPL(lbs_add_card);
999 void lbs_remove_card(struct lbs_private *priv)
1001 struct net_device *dev = priv->dev;
1003 lbs_deb_enter(LBS_DEB_MAIN);
1005 lbs_remove_mesh(priv);
1006 lbs_scan_deinit(priv);
1008 /* worker thread destruction blocks on the in-flight command which
1009 * should have been cleared already in lbs_stop_card().
1011 lbs_deb_main("destroying worker thread\n");
1012 destroy_workqueue(priv->work_thread);
1013 lbs_deb_main("done destroying worker thread\n");
1015 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1016 priv->psmode = LBS802_11POWERMODECAM;
1017 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, true);
1020 if (priv->is_deep_sleep) {
1021 priv->is_deep_sleep = 0;
1022 wake_up_interruptible(&priv->ds_awake_q);
1025 priv->is_host_sleep_configured = 0;
1026 priv->is_host_sleep_activated = 0;
1027 wake_up_interruptible(&priv->host_sleep_q);
1029 /* Stop the thread servicing the interrupts */
1030 priv->surpriseremoved = 1;
1031 kthread_stop(priv->main_thread);
1033 lbs_free_adapter(priv);
1037 lbs_deb_leave(LBS_DEB_MAIN);
1039 EXPORT_SYMBOL_GPL(lbs_remove_card);
1042 int lbs_rtap_supported(struct lbs_private *priv)
1044 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
1047 /* newer firmware use a capability mask */
1048 return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
1049 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));
1053 int lbs_start_card(struct lbs_private *priv)
1055 struct net_device *dev = priv->dev;
1058 lbs_deb_enter(LBS_DEB_MAIN);
1060 /* poke the firmware */
1061 ret = lbs_setup_firmware(priv);
1065 if (!lbs_disablemesh)
1066 lbs_init_mesh(priv);
1068 pr_info("%s: mesh disabled\n", dev->name);
1070 if (lbs_cfg_register(priv)) {
1071 pr_err("cannot register device\n");
1075 if (lbs_mesh_activated(priv))
1076 lbs_start_mesh(priv);
1078 lbs_debugfs_init_one(priv, dev);
1080 netdev_info(dev, "Marvell WLAN 802.11 adapter\n");
1085 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1088 EXPORT_SYMBOL_GPL(lbs_start_card);
1091 void lbs_stop_card(struct lbs_private *priv)
1093 struct net_device *dev;
1095 lbs_deb_enter(LBS_DEB_MAIN);
1101 netif_stop_queue(dev);
1102 netif_carrier_off(dev);
1104 lbs_debugfs_remove_one(priv);
1105 lbs_deinit_mesh(priv);
1106 unregister_netdev(dev);
1109 lbs_deb_leave(LBS_DEB_MAIN);
1111 EXPORT_SYMBOL_GPL(lbs_stop_card);
1114 void lbs_queue_event(struct lbs_private *priv, u32 event)
1116 unsigned long flags;
1118 lbs_deb_enter(LBS_DEB_THREAD);
1119 spin_lock_irqsave(&priv->driver_lock, flags);
1121 if (priv->psstate == PS_STATE_SLEEP)
1122 priv->psstate = PS_STATE_AWAKE;
1124 kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1126 wake_up(&priv->waitq);
1128 spin_unlock_irqrestore(&priv->driver_lock, flags);
1129 lbs_deb_leave(LBS_DEB_THREAD);
1131 EXPORT_SYMBOL_GPL(lbs_queue_event);
1133 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1135 lbs_deb_enter(LBS_DEB_THREAD);
1137 if (priv->psstate == PS_STATE_SLEEP)
1138 priv->psstate = PS_STATE_AWAKE;
1140 /* Swap buffers by flipping the response index */
1141 BUG_ON(resp_idx > 1);
1142 priv->resp_idx = resp_idx;
1144 wake_up(&priv->waitq);
1146 lbs_deb_leave(LBS_DEB_THREAD);
1148 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1151 * lbs_get_firmware - Retrieves two-stage firmware
1153 * @dev: A pointer to &device structure
1154 * @user_helper: User-defined helper firmware file
1155 * @user_mainfw: User-defined main firmware file
1156 * @card_model: Bus-specific card model ID used to filter firmware table
1158 * @fw_table: Table of firmware file names and device model numbers
1159 * terminated by an entry with a NULL helper name
1160 * @helper: On success, the helper firmware; caller must free
1161 * @mainfw: On success, the main firmware; caller must free
1163 * returns: 0 on success, non-zero on failure
1165 int lbs_get_firmware(struct device *dev, const char *user_helper,
1166 const char *user_mainfw, u32 card_model,
1167 const struct lbs_fw_table *fw_table,
1168 const struct firmware **helper,
1169 const struct firmware **mainfw)
1171 const struct lbs_fw_table *iter;
1174 BUG_ON(helper == NULL);
1175 BUG_ON(mainfw == NULL);
1177 /* Try user-specified firmware first */
1179 ret = request_firmware(helper, user_helper, dev);
1181 dev_err(dev, "couldn't find helper firmware %s\n",
1187 ret = request_firmware(mainfw, user_mainfw, dev);
1189 dev_err(dev, "couldn't find main firmware %s\n",
1195 if (*helper && *mainfw)
1198 /* Otherwise search for firmware to use. If neither the helper or
1199 * the main firmware were specified by the user, then we need to
1200 * make sure that found helper & main are from the same entry in
1204 while (iter && iter->helper) {
1205 if (iter->model != card_model)
1208 if (*helper == NULL) {
1209 ret = request_firmware(helper, iter->helper, dev);
1213 /* If the device has one-stage firmware (ie cf8305) and
1214 * we've got it then we don't need to bother with the
1217 if (iter->fwname == NULL)
1221 if (*mainfw == NULL) {
1222 ret = request_firmware(mainfw, iter->fwname, dev);
1223 if (ret && !user_helper) {
1224 /* Clear the helper if it wasn't user-specified
1225 * and the main firmware load failed, to ensure
1226 * we don't have mismatched firmware pairs.
1228 release_firmware(*helper);
1233 if (*helper && *mainfw)
1243 release_firmware(*helper);
1247 release_firmware(*mainfw);
1253 EXPORT_SYMBOL_GPL(lbs_get_firmware);
1255 static int __init lbs_init_module(void)
1257 lbs_deb_enter(LBS_DEB_MAIN);
1258 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1259 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1260 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1261 confirm_sleep.action = cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED);
1263 lbs_deb_leave(LBS_DEB_MAIN);
1267 static void __exit lbs_exit_module(void)
1269 lbs_deb_enter(LBS_DEB_MAIN);
1270 lbs_debugfs_remove();
1271 lbs_deb_leave(LBS_DEB_MAIN);
1274 module_init(lbs_init_module);
1275 module_exit(lbs_exit_module);
1277 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1278 MODULE_AUTHOR("Marvell International Ltd.");
1279 MODULE_LICENSE("GPL");