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_set_iface_type(struct lbs_private *priv, enum nl80211_iftype type)
107 case NL80211_IFTYPE_MONITOR:
108 ret = lbs_set_monitor_mode(priv, 1);
110 case NL80211_IFTYPE_STATION:
111 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
112 ret = lbs_set_monitor_mode(priv, 0);
114 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
116 case NL80211_IFTYPE_ADHOC:
117 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
118 ret = lbs_set_monitor_mode(priv, 0);
120 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
128 int lbs_start_iface(struct lbs_private *priv)
130 struct cmd_ds_802_11_mac_address cmd;
133 if (priv->power_restore) {
134 ret = priv->power_restore(priv);
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);
143 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
145 lbs_deb_net("set MAC address failed\n");
149 ret = lbs_set_iface_type(priv, priv->wdev->iftype);
151 lbs_deb_net("set iface type failed\n");
155 lbs_update_channel(priv);
157 priv->iface_running = true;
161 if (priv->power_save)
162 priv->power_save(priv);
167 * lbs_dev_open - open the ethX interface
169 * @dev: A pointer to &net_device structure
170 * returns: 0 or -EBUSY if monitor mode active
172 static int lbs_dev_open(struct net_device *dev)
174 struct lbs_private *priv = dev->ml_priv;
177 lbs_deb_enter(LBS_DEB_NET);
178 if (!priv->iface_running) {
179 ret = lbs_start_iface(priv);
184 spin_lock_irq(&priv->driver_lock);
186 netif_carrier_off(dev);
188 if (!priv->tx_pending_len)
189 netif_wake_queue(dev);
191 spin_unlock_irq(&priv->driver_lock);
194 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
198 static bool lbs_command_queue_empty(struct lbs_private *priv)
202 spin_lock_irqsave(&priv->driver_lock, flags);
203 ret = priv->cur_cmd == NULL && list_empty(&priv->cmdpendingq);
204 spin_unlock_irqrestore(&priv->driver_lock, flags);
208 int lbs_stop_iface(struct lbs_private *priv)
213 lbs_deb_enter(LBS_DEB_MAIN);
215 spin_lock_irqsave(&priv->driver_lock, flags);
216 priv->iface_running = false;
217 kfree_skb(priv->currenttxskb);
218 priv->currenttxskb = NULL;
219 priv->tx_pending_len = 0;
220 spin_unlock_irqrestore(&priv->driver_lock, flags);
222 cancel_work_sync(&priv->mcast_work);
223 del_timer_sync(&priv->tx_lockup_timer);
225 /* Disable command processing, and wait for all commands to complete */
226 lbs_deb_main("waiting for commands to complete\n");
227 wait_event(priv->waitq, lbs_command_queue_empty(priv));
228 lbs_deb_main("all commands completed\n");
230 if (priv->power_save)
231 ret = priv->power_save(priv);
233 lbs_deb_leave(LBS_DEB_MAIN);
238 * lbs_eth_stop - close the ethX interface
240 * @dev: A pointer to &net_device structure
243 static int lbs_eth_stop(struct net_device *dev)
245 struct lbs_private *priv = dev->ml_priv;
247 lbs_deb_enter(LBS_DEB_NET);
249 if (priv->connect_status == LBS_CONNECTED)
250 lbs_disconnect(priv, WLAN_REASON_DEAUTH_LEAVING);
252 spin_lock_irq(&priv->driver_lock);
253 netif_stop_queue(dev);
254 spin_unlock_irq(&priv->driver_lock);
256 lbs_update_mcast(priv);
257 cancel_delayed_work_sync(&priv->scan_work);
258 if (priv->scan_req) {
259 cfg80211_scan_done(priv->scan_req, false);
260 priv->scan_req = NULL;
263 netif_carrier_off(priv->dev);
265 if (!lbs_iface_active(priv))
266 lbs_stop_iface(priv);
268 lbs_deb_leave(LBS_DEB_NET);
272 void lbs_host_to_card_done(struct lbs_private *priv)
276 lbs_deb_enter(LBS_DEB_THREAD);
278 spin_lock_irqsave(&priv->driver_lock, flags);
279 del_timer(&priv->tx_lockup_timer);
281 priv->dnld_sent = DNLD_RES_RECEIVED;
283 /* Wake main thread if commands are pending */
284 if (!priv->cur_cmd || priv->tx_pending_len > 0) {
285 if (!priv->wakeup_dev_required)
286 wake_up(&priv->waitq);
289 spin_unlock_irqrestore(&priv->driver_lock, flags);
290 lbs_deb_leave(LBS_DEB_THREAD);
292 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
294 int lbs_set_mac_address(struct net_device *dev, void *addr)
297 struct lbs_private *priv = dev->ml_priv;
298 struct sockaddr *phwaddr = addr;
300 lbs_deb_enter(LBS_DEB_NET);
303 * Can only set MAC address when all interfaces are down, to be written
304 * to the hardware when one of them is brought up.
306 if (lbs_iface_active(priv))
309 /* In case it was called from the mesh device */
312 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
313 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
315 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
317 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
322 static inline int mac_in_list(unsigned char *list, int list_len,
326 if (!memcmp(list, mac, ETH_ALEN))
335 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
336 struct net_device *dev, int nr_addrs)
339 struct netdev_hw_addr *ha;
342 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
345 netif_addr_lock_bh(dev);
346 cnt = netdev_mc_count(dev);
347 netdev_for_each_mc_addr(ha, dev) {
348 if (mac_in_list(cmd->maclist, nr_addrs, ha->addr)) {
349 lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
355 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
357 memcpy(&cmd->maclist[6*i], ha->addr, ETH_ALEN);
358 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
363 netif_addr_unlock_bh(dev);
370 void lbs_update_mcast(struct lbs_private *priv)
372 struct cmd_ds_mac_multicast_adr mcast_cmd;
375 int old_mac_control = priv->mac_control;
377 lbs_deb_enter(LBS_DEB_NET);
379 if (netif_running(priv->dev))
380 dev_flags |= priv->dev->flags;
381 if (priv->mesh_dev && netif_running(priv->mesh_dev))
382 dev_flags |= priv->mesh_dev->flags;
384 if (dev_flags & IFF_PROMISC) {
385 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
386 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
387 CMD_ACT_MAC_MULTICAST_ENABLE);
388 goto out_set_mac_control;
389 } else if (dev_flags & IFF_ALLMULTI) {
391 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
392 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
393 CMD_ACT_MAC_MULTICAST_ENABLE);
394 goto out_set_mac_control;
397 /* Once for priv->dev, again for priv->mesh_dev if it exists */
398 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
399 if (nr_addrs >= 0 && priv->mesh_dev)
400 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
405 int size = offsetof(struct cmd_ds_mac_multicast_adr,
406 maclist[6*nr_addrs]);
408 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
409 mcast_cmd.hdr.size = cpu_to_le16(size);
410 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
412 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
414 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
416 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
418 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
419 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
421 if (priv->mac_control != old_mac_control)
422 lbs_set_mac_control(priv);
424 lbs_deb_leave(LBS_DEB_NET);
427 static void lbs_set_mcast_worker(struct work_struct *work)
429 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
430 lbs_update_mcast(priv);
433 void lbs_set_multicast_list(struct net_device *dev)
435 struct lbs_private *priv = dev->ml_priv;
437 schedule_work(&priv->mcast_work);
441 * lbs_thread - handles the major jobs in the LBS driver.
442 * It handles all events generated by firmware, RX data received
443 * from firmware and TX data sent from kernel.
445 * @data: A pointer to &lbs_thread structure
448 static int lbs_thread(void *data)
450 struct net_device *dev = data;
451 struct lbs_private *priv = dev->ml_priv;
454 lbs_deb_enter(LBS_DEB_THREAD);
456 init_waitqueue_entry(&wait, current);
462 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
463 priv->currenttxskb, priv->dnld_sent);
465 add_wait_queue(&priv->waitq, &wait);
466 set_current_state(TASK_INTERRUPTIBLE);
467 spin_lock_irq(&priv->driver_lock);
469 if (kthread_should_stop())
470 shouldsleep = 0; /* Bye */
471 else if (priv->surpriseremoved)
472 shouldsleep = 1; /* We need to wait until we're _told_ to die */
473 else if (priv->psstate == PS_STATE_SLEEP)
474 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
475 else if (priv->cmd_timed_out)
476 shouldsleep = 0; /* Command timed out. Recover */
477 else if (!priv->fw_ready)
478 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
479 else if (priv->dnld_sent)
480 shouldsleep = 1; /* Something is en route to the device already */
481 else if (priv->tx_pending_len > 0)
482 shouldsleep = 0; /* We've a packet to send */
483 else if (priv->resp_len[priv->resp_idx])
484 shouldsleep = 0; /* We have a command response */
485 else if (priv->cur_cmd)
486 shouldsleep = 1; /* Can't send a command; one already running */
487 else if (!list_empty(&priv->cmdpendingq) &&
488 !(priv->wakeup_dev_required))
489 shouldsleep = 0; /* We have a command to send */
490 else if (kfifo_len(&priv->event_fifo))
491 shouldsleep = 0; /* We have an event to process */
493 shouldsleep = 1; /* No command */
496 lbs_deb_thread("sleeping, connect_status %d, "
497 "psmode %d, psstate %d\n",
498 priv->connect_status,
499 priv->psmode, priv->psstate);
500 spin_unlock_irq(&priv->driver_lock);
503 spin_unlock_irq(&priv->driver_lock);
505 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
506 priv->currenttxskb, priv->dnld_sent);
508 set_current_state(TASK_RUNNING);
509 remove_wait_queue(&priv->waitq, &wait);
511 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
512 priv->currenttxskb, priv->dnld_sent);
514 if (kthread_should_stop()) {
515 lbs_deb_thread("break from main thread\n");
519 if (priv->surpriseremoved) {
520 lbs_deb_thread("adapter removed; waiting to die...\n");
524 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
525 priv->currenttxskb, priv->dnld_sent);
527 /* Process any pending command response */
528 spin_lock_irq(&priv->driver_lock);
529 resp_idx = priv->resp_idx;
530 if (priv->resp_len[resp_idx]) {
531 spin_unlock_irq(&priv->driver_lock);
532 lbs_process_command_response(priv,
533 priv->resp_buf[resp_idx],
534 priv->resp_len[resp_idx]);
535 spin_lock_irq(&priv->driver_lock);
536 priv->resp_len[resp_idx] = 0;
538 spin_unlock_irq(&priv->driver_lock);
540 /* Process hardware events, e.g. card removed, link lost */
541 spin_lock_irq(&priv->driver_lock);
542 while (kfifo_len(&priv->event_fifo)) {
545 if (kfifo_out(&priv->event_fifo,
546 (unsigned char *) &event, sizeof(event)) !=
549 spin_unlock_irq(&priv->driver_lock);
550 lbs_process_event(priv, event);
551 spin_lock_irq(&priv->driver_lock);
553 spin_unlock_irq(&priv->driver_lock);
555 if (priv->wakeup_dev_required) {
556 lbs_deb_thread("Waking up device...\n");
558 if (priv->exit_deep_sleep(priv))
559 lbs_deb_thread("Wakeup device failed\n");
563 /* command timeout stuff */
564 if (priv->cmd_timed_out && priv->cur_cmd) {
565 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
567 netdev_info(dev, "Timeout submitting command 0x%04x\n",
568 le16_to_cpu(cmdnode->cmdbuf->command));
569 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
570 if (priv->reset_card)
571 priv->reset_card(priv);
573 priv->cmd_timed_out = 0;
578 /* Check if we need to confirm Sleep Request received previously */
579 if (priv->psstate == PS_STATE_PRE_SLEEP &&
580 !priv->dnld_sent && !priv->cur_cmd) {
581 if (priv->connect_status == LBS_CONNECTED) {
582 lbs_deb_thread("pre-sleep, currenttxskb %p, "
583 "dnld_sent %d, cur_cmd %p\n",
584 priv->currenttxskb, priv->dnld_sent,
587 lbs_ps_confirm_sleep(priv);
589 /* workaround for firmware sending
590 * deauth/linkloss event immediately
591 * after sleep request; remove this
592 * after firmware fixes it
594 priv->psstate = PS_STATE_AWAKE;
596 "ignore PS_SleepConfirm in non-connected state\n");
600 /* The PS state is changed during processing of Sleep Request
603 if ((priv->psstate == PS_STATE_SLEEP) ||
604 (priv->psstate == PS_STATE_PRE_SLEEP))
607 if (priv->is_deep_sleep)
610 /* Execute the next command */
611 if (!priv->dnld_sent && !priv->cur_cmd)
612 lbs_execute_next_command(priv);
614 spin_lock_irq(&priv->driver_lock);
615 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
616 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
617 priv->tx_pending_buf,
618 priv->tx_pending_len);
620 lbs_deb_tx("host_to_card failed %d\n", ret);
621 priv->dnld_sent = DNLD_RES_RECEIVED;
623 mod_timer(&priv->tx_lockup_timer,
626 priv->tx_pending_len = 0;
627 if (!priv->currenttxskb) {
628 /* We can wake the queues immediately if we aren't
629 waiting for TX feedback */
630 if (priv->connect_status == LBS_CONNECTED)
631 netif_wake_queue(priv->dev);
632 if (priv->mesh_dev &&
633 netif_running(priv->mesh_dev))
634 netif_wake_queue(priv->mesh_dev);
637 spin_unlock_irq(&priv->driver_lock);
640 del_timer(&priv->command_timer);
641 del_timer(&priv->tx_lockup_timer);
642 del_timer(&priv->auto_deepsleep_timer);
644 lbs_deb_leave(LBS_DEB_THREAD);
649 * lbs_setup_firmware - gets the HW spec from the firmware and sets
650 * some basic parameters
652 * @priv: A pointer to &struct lbs_private structure
655 static int lbs_setup_firmware(struct lbs_private *priv)
658 s16 curlevel = 0, minlevel = 0, maxlevel = 0;
660 lbs_deb_enter(LBS_DEB_FW);
662 /* Read MAC address from firmware */
663 memset(priv->current_addr, 0xff, ETH_ALEN);
664 ret = lbs_update_hw_spec(priv);
668 /* Read power levels if available */
669 ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
671 priv->txpower_cur = curlevel;
672 priv->txpower_min = minlevel;
673 priv->txpower_max = maxlevel;
676 /* Send cmd to FW to enable 11D function */
677 ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_11D_ENABLE, 1);
679 lbs_set_mac_control(priv);
681 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
685 int lbs_suspend(struct lbs_private *priv)
689 lbs_deb_enter(LBS_DEB_FW);
691 if (priv->is_deep_sleep) {
692 ret = lbs_set_deep_sleep(priv, 0);
694 netdev_err(priv->dev,
695 "deep sleep cancellation failed: %d\n", ret);
698 priv->deep_sleep_required = 1;
701 ret = lbs_set_host_sleep(priv, 1);
703 netif_device_detach(priv->dev);
705 netif_device_detach(priv->mesh_dev);
707 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
710 EXPORT_SYMBOL_GPL(lbs_suspend);
712 int lbs_resume(struct lbs_private *priv)
716 lbs_deb_enter(LBS_DEB_FW);
718 ret = lbs_set_host_sleep(priv, 0);
720 netif_device_attach(priv->dev);
722 netif_device_attach(priv->mesh_dev);
724 if (priv->deep_sleep_required) {
725 priv->deep_sleep_required = 0;
726 ret = lbs_set_deep_sleep(priv, 1);
728 netdev_err(priv->dev,
729 "deep sleep activation failed: %d\n", ret);
732 if (priv->setup_fw_on_resume)
733 ret = lbs_setup_firmware(priv);
735 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
738 EXPORT_SYMBOL_GPL(lbs_resume);
741 * lbs_cmd_timeout_handler - handles the timeout of command sending.
742 * It will re-send the same command again.
744 * @data: &struct lbs_private pointer
746 static void lbs_cmd_timeout_handler(unsigned long data)
748 struct lbs_private *priv = (struct lbs_private *)data;
751 lbs_deb_enter(LBS_DEB_CMD);
752 spin_lock_irqsave(&priv->driver_lock, flags);
757 netdev_info(priv->dev, "command 0x%04x timed out\n",
758 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
760 priv->cmd_timed_out = 1;
763 * If the device didn't even acknowledge the command, reset the state
764 * so that we don't block all future commands due to this one timeout.
766 if (priv->dnld_sent == DNLD_CMD_SENT)
767 priv->dnld_sent = DNLD_RES_RECEIVED;
769 wake_up(&priv->waitq);
771 spin_unlock_irqrestore(&priv->driver_lock, flags);
772 lbs_deb_leave(LBS_DEB_CMD);
776 * lbs_tx_lockup_handler - handles the timeout of the passing of TX frames
777 * to the hardware. This is known to frequently happen with SD8686 when
778 * waking up after a Wake-on-WLAN-triggered resume.
780 * @data: &struct lbs_private pointer
782 static void lbs_tx_lockup_handler(unsigned long data)
784 struct lbs_private *priv = (struct lbs_private *)data;
787 lbs_deb_enter(LBS_DEB_TX);
788 spin_lock_irqsave(&priv->driver_lock, flags);
790 netdev_info(priv->dev, "TX lockup detected\n");
791 if (priv->reset_card)
792 priv->reset_card(priv);
794 priv->dnld_sent = DNLD_RES_RECEIVED;
795 wake_up_interruptible(&priv->waitq);
797 spin_unlock_irqrestore(&priv->driver_lock, flags);
798 lbs_deb_leave(LBS_DEB_TX);
802 * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
803 * timer expires and no activity (command, event, data etc.) is detected.
804 * @data: &struct lbs_private pointer
807 static void auto_deepsleep_timer_fn(unsigned long data)
809 struct lbs_private *priv = (struct lbs_private *)data;
811 lbs_deb_enter(LBS_DEB_CMD);
813 if (priv->is_activity_detected) {
814 priv->is_activity_detected = 0;
816 if (priv->is_auto_deep_sleep_enabled &&
817 (!priv->wakeup_dev_required) &&
818 (priv->connect_status != LBS_CONNECTED)) {
819 struct cmd_header cmd;
821 lbs_deb_main("Entering auto deep sleep mode...\n");
822 memset(&cmd, 0, sizeof(cmd));
823 cmd.size = cpu_to_le16(sizeof(cmd));
824 lbs_cmd_async(priv, CMD_802_11_DEEP_SLEEP, &cmd,
828 mod_timer(&priv->auto_deepsleep_timer , jiffies +
829 (priv->auto_deep_sleep_timeout * HZ)/1000);
830 lbs_deb_leave(LBS_DEB_CMD);
833 int lbs_enter_auto_deep_sleep(struct lbs_private *priv)
835 lbs_deb_enter(LBS_DEB_SDIO);
837 priv->is_auto_deep_sleep_enabled = 1;
838 if (priv->is_deep_sleep)
839 priv->wakeup_dev_required = 1;
840 mod_timer(&priv->auto_deepsleep_timer ,
841 jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000);
843 lbs_deb_leave(LBS_DEB_SDIO);
847 int lbs_exit_auto_deep_sleep(struct lbs_private *priv)
849 lbs_deb_enter(LBS_DEB_SDIO);
851 priv->is_auto_deep_sleep_enabled = 0;
852 priv->auto_deep_sleep_timeout = 0;
853 del_timer(&priv->auto_deepsleep_timer);
855 lbs_deb_leave(LBS_DEB_SDIO);
859 static int lbs_init_adapter(struct lbs_private *priv)
863 lbs_deb_enter(LBS_DEB_MAIN);
865 memset(priv->current_addr, 0xff, ETH_ALEN);
867 priv->connect_status = LBS_DISCONNECTED;
868 priv->channel = DEFAULT_AD_HOC_CHANNEL;
869 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
871 priv->psmode = LBS802_11POWERMODECAM;
872 priv->psstate = PS_STATE_FULL_POWER;
873 priv->is_deep_sleep = 0;
874 priv->is_auto_deep_sleep_enabled = 0;
875 priv->deep_sleep_required = 0;
876 priv->wakeup_dev_required = 0;
877 init_waitqueue_head(&priv->ds_awake_q);
878 init_waitqueue_head(&priv->scan_q);
879 priv->authtype_auto = 1;
880 priv->is_host_sleep_configured = 0;
881 priv->is_host_sleep_activated = 0;
882 init_waitqueue_head(&priv->host_sleep_q);
883 mutex_init(&priv->lock);
885 setup_timer(&priv->command_timer, lbs_cmd_timeout_handler,
886 (unsigned long)priv);
887 setup_timer(&priv->tx_lockup_timer, lbs_tx_lockup_handler,
888 (unsigned long)priv);
889 setup_timer(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn,
890 (unsigned long)priv);
892 INIT_LIST_HEAD(&priv->cmdfreeq);
893 INIT_LIST_HEAD(&priv->cmdpendingq);
895 spin_lock_init(&priv->driver_lock);
897 /* Allocate the command buffers */
898 if (lbs_allocate_cmd_buffer(priv)) {
899 pr_err("Out of memory allocating command buffers\n");
904 priv->resp_len[0] = priv->resp_len[1] = 0;
906 /* Create the event FIFO */
907 ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL);
909 pr_err("Out of memory allocating event FIFO buffer\n");
914 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
919 static void lbs_free_adapter(struct lbs_private *priv)
921 lbs_deb_enter(LBS_DEB_MAIN);
923 lbs_free_cmd_buffer(priv);
924 kfifo_free(&priv->event_fifo);
925 del_timer(&priv->command_timer);
926 del_timer(&priv->tx_lockup_timer);
927 del_timer(&priv->auto_deepsleep_timer);
929 lbs_deb_leave(LBS_DEB_MAIN);
932 static const struct net_device_ops lbs_netdev_ops = {
933 .ndo_open = lbs_dev_open,
934 .ndo_stop = lbs_eth_stop,
935 .ndo_start_xmit = lbs_hard_start_xmit,
936 .ndo_set_mac_address = lbs_set_mac_address,
937 .ndo_set_rx_mode = lbs_set_multicast_list,
938 .ndo_change_mtu = eth_change_mtu,
939 .ndo_validate_addr = eth_validate_addr,
943 * lbs_add_card - adds the card. It will probe the
944 * card, allocate the lbs_priv and initialize the device.
946 * @card: A pointer to card
947 * @dmdev: A pointer to &struct device
948 * returns: A pointer to &struct lbs_private structure
950 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
952 struct net_device *dev;
953 struct wireless_dev *wdev;
954 struct lbs_private *priv = NULL;
956 lbs_deb_enter(LBS_DEB_MAIN);
958 /* Allocate an Ethernet device and register it */
959 wdev = lbs_cfg_alloc(dmdev);
961 pr_err("cfg80211 init failed\n");
965 wdev->iftype = NL80211_IFTYPE_STATION;
966 priv = wdev_priv(wdev);
969 if (lbs_init_adapter(priv)) {
970 pr_err("failed to initialize adapter structure\n");
974 dev = alloc_netdev(0, "wlan%d", ether_setup);
976 dev_err(dmdev, "no memory for network device instance\n");
980 dev->ieee80211_ptr = wdev;
982 SET_NETDEV_DEV(dev, dmdev);
986 dev->netdev_ops = &lbs_netdev_ops;
987 dev->watchdog_timeo = 5 * HZ;
988 dev->ethtool_ops = &lbs_ethtool_ops;
989 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
993 strcpy(dev->name, "wlan%d");
995 lbs_deb_thread("Starting main thread...\n");
996 init_waitqueue_head(&priv->waitq);
997 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
998 if (IS_ERR(priv->main_thread)) {
999 lbs_deb_thread("Error creating main thread.\n");
1003 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1004 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1006 priv->wol_criteria = EHS_REMOVE_WAKEUP;
1007 priv->wol_gpio = 0xff;
1009 priv->ehs_remove_supported = true;
1017 lbs_free_adapter(priv);
1025 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1028 EXPORT_SYMBOL_GPL(lbs_add_card);
1031 void lbs_remove_card(struct lbs_private *priv)
1033 struct net_device *dev = priv->dev;
1035 lbs_deb_enter(LBS_DEB_MAIN);
1037 lbs_remove_mesh(priv);
1038 lbs_scan_deinit(priv);
1040 /* worker thread destruction blocks on the in-flight command which
1041 * should have been cleared already in lbs_stop_card().
1043 lbs_deb_main("destroying worker thread\n");
1044 destroy_workqueue(priv->work_thread);
1045 lbs_deb_main("done destroying worker thread\n");
1047 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1048 priv->psmode = LBS802_11POWERMODECAM;
1049 lbs_set_ps_mode(priv, PS_MODE_ACTION_EXIT_PS, true);
1052 if (priv->is_deep_sleep) {
1053 priv->is_deep_sleep = 0;
1054 wake_up_interruptible(&priv->ds_awake_q);
1057 priv->is_host_sleep_configured = 0;
1058 priv->is_host_sleep_activated = 0;
1059 wake_up_interruptible(&priv->host_sleep_q);
1061 /* Stop the thread servicing the interrupts */
1062 priv->surpriseremoved = 1;
1063 kthread_stop(priv->main_thread);
1065 lbs_free_adapter(priv);
1069 lbs_deb_leave(LBS_DEB_MAIN);
1071 EXPORT_SYMBOL_GPL(lbs_remove_card);
1074 int lbs_rtap_supported(struct lbs_private *priv)
1076 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
1079 /* newer firmware use a capability mask */
1080 return ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
1081 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK));
1085 int lbs_start_card(struct lbs_private *priv)
1087 struct net_device *dev = priv->dev;
1090 lbs_deb_enter(LBS_DEB_MAIN);
1092 /* poke the firmware */
1093 ret = lbs_setup_firmware(priv);
1097 if (!lbs_disablemesh)
1098 lbs_init_mesh(priv);
1100 pr_info("%s: mesh disabled\n", dev->name);
1102 if (lbs_cfg_register(priv)) {
1103 pr_err("cannot register device\n");
1107 if (lbs_mesh_activated(priv))
1108 lbs_start_mesh(priv);
1110 lbs_debugfs_init_one(priv, dev);
1112 netdev_info(dev, "Marvell WLAN 802.11 adapter\n");
1117 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1120 EXPORT_SYMBOL_GPL(lbs_start_card);
1123 void lbs_stop_card(struct lbs_private *priv)
1125 struct net_device *dev;
1127 lbs_deb_enter(LBS_DEB_MAIN);
1133 netif_stop_queue(dev);
1134 netif_carrier_off(dev);
1136 lbs_debugfs_remove_one(priv);
1137 lbs_deinit_mesh(priv);
1138 unregister_netdev(dev);
1141 lbs_deb_leave(LBS_DEB_MAIN);
1143 EXPORT_SYMBOL_GPL(lbs_stop_card);
1146 void lbs_queue_event(struct lbs_private *priv, u32 event)
1148 unsigned long flags;
1150 lbs_deb_enter(LBS_DEB_THREAD);
1151 spin_lock_irqsave(&priv->driver_lock, flags);
1153 if (priv->psstate == PS_STATE_SLEEP)
1154 priv->psstate = PS_STATE_AWAKE;
1156 kfifo_in(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1158 wake_up(&priv->waitq);
1160 spin_unlock_irqrestore(&priv->driver_lock, flags);
1161 lbs_deb_leave(LBS_DEB_THREAD);
1163 EXPORT_SYMBOL_GPL(lbs_queue_event);
1165 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1167 lbs_deb_enter(LBS_DEB_THREAD);
1169 if (priv->psstate == PS_STATE_SLEEP)
1170 priv->psstate = PS_STATE_AWAKE;
1172 /* Swap buffers by flipping the response index */
1173 BUG_ON(resp_idx > 1);
1174 priv->resp_idx = resp_idx;
1176 wake_up(&priv->waitq);
1178 lbs_deb_leave(LBS_DEB_THREAD);
1180 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1183 * lbs_get_firmware - Retrieves two-stage firmware
1185 * @dev: A pointer to &device structure
1186 * @user_helper: User-defined helper firmware file
1187 * @user_mainfw: User-defined main firmware file
1188 * @card_model: Bus-specific card model ID used to filter firmware table
1190 * @fw_table: Table of firmware file names and device model numbers
1191 * terminated by an entry with a NULL helper name
1192 * @helper: On success, the helper firmware; caller must free
1193 * @mainfw: On success, the main firmware; caller must free
1195 * returns: 0 on success, non-zero on failure
1197 int lbs_get_firmware(struct device *dev, const char *user_helper,
1198 const char *user_mainfw, u32 card_model,
1199 const struct lbs_fw_table *fw_table,
1200 const struct firmware **helper,
1201 const struct firmware **mainfw)
1203 const struct lbs_fw_table *iter;
1206 BUG_ON(helper == NULL);
1207 BUG_ON(mainfw == NULL);
1209 /* Try user-specified firmware first */
1211 ret = request_firmware(helper, user_helper, dev);
1213 dev_err(dev, "couldn't find helper firmware %s\n",
1219 ret = request_firmware(mainfw, user_mainfw, dev);
1221 dev_err(dev, "couldn't find main firmware %s\n",
1227 if (*helper && *mainfw)
1230 /* Otherwise search for firmware to use. If neither the helper or
1231 * the main firmware were specified by the user, then we need to
1232 * make sure that found helper & main are from the same entry in
1236 while (iter && iter->helper) {
1237 if (iter->model != card_model)
1240 if (*helper == NULL) {
1241 ret = request_firmware(helper, iter->helper, dev);
1245 /* If the device has one-stage firmware (ie cf8305) and
1246 * we've got it then we don't need to bother with the
1249 if (iter->fwname == NULL)
1253 if (*mainfw == NULL) {
1254 ret = request_firmware(mainfw, iter->fwname, dev);
1255 if (ret && !user_helper) {
1256 /* Clear the helper if it wasn't user-specified
1257 * and the main firmware load failed, to ensure
1258 * we don't have mismatched firmware pairs.
1260 release_firmware(*helper);
1265 if (*helper && *mainfw)
1275 release_firmware(*helper);
1279 release_firmware(*mainfw);
1285 EXPORT_SYMBOL_GPL(lbs_get_firmware);
1287 static int __init lbs_init_module(void)
1289 lbs_deb_enter(LBS_DEB_MAIN);
1290 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1291 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1292 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1293 confirm_sleep.action = cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED);
1295 lbs_deb_leave(LBS_DEB_MAIN);
1299 static void __exit lbs_exit_module(void)
1301 lbs_deb_enter(LBS_DEB_MAIN);
1302 lbs_debugfs_remove();
1303 lbs_deb_leave(LBS_DEB_MAIN);
1306 module_init(lbs_init_module);
1307 module_exit(lbs_exit_module);
1309 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1310 MODULE_AUTHOR("Marvell International Ltd.");
1311 MODULE_LICENSE("GPL");