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/stddef.h>
15 #include <linux/ieee80211.h>
16 #include <net/iw_handler.h>
17 #include <net/cfg80211.h>
29 #define DRIVER_RELEASE_VERSION "323.p0"
30 const char lbs_driver_version
[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
37 /* Module parameters */
38 unsigned int lbs_debug
;
39 EXPORT_SYMBOL_GPL(lbs_debug
);
40 module_param_named(libertas_debug
, lbs_debug
, int, 0644);
43 /* This global structure is used to send the confirm_sleep command as
44 * fast as possible down to the firmware. */
45 struct cmd_confirm_sleep confirm_sleep
;
49 * the table to keep region code
51 u16 lbs_region_code_to_index
[MRVDRV_MAX_REGION_CODE
] =
52 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
55 * FW rate table. FW refers to rates by their index in this table, not by the
56 * rate value itself. Values of 0x00 are
59 static u8 fw_data_rates
[MAX_RATES
] =
60 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
61 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
65 * @brief use index to get the data rate
67 * @param idx The index of data rate
68 * @return data rate or 0
70 u32
lbs_fw_index_to_data_rate(u8 idx
)
72 if (idx
>= sizeof(fw_data_rates
))
74 return fw_data_rates
[idx
];
78 * @brief use rate to get the index
80 * @param rate data rate
83 u8
lbs_data_rate_to_fw_index(u32 rate
)
90 for (i
= 0; i
< sizeof(fw_data_rates
); i
++) {
91 if (rate
== fw_data_rates
[i
])
98 static int lbs_add_rtap(struct lbs_private
*priv
);
99 static void lbs_remove_rtap(struct lbs_private
*priv
);
103 * Get function for sysfs attribute rtap
105 static ssize_t
lbs_rtap_get(struct device
*dev
,
106 struct device_attribute
*attr
, char * buf
)
108 struct lbs_private
*priv
= to_net_dev(dev
)->ml_priv
;
109 return snprintf(buf
, 5, "0x%X\n", priv
->monitormode
);
113 * Set function for sysfs attribute rtap
115 static ssize_t
lbs_rtap_set(struct device
*dev
,
116 struct device_attribute
*attr
, const char * buf
, size_t count
)
119 struct lbs_private
*priv
= to_net_dev(dev
)->ml_priv
;
121 sscanf(buf
, "%x", &monitor_mode
);
123 if (priv
->monitormode
== monitor_mode
)
125 if (!priv
->monitormode
) {
126 if (priv
->infra_open
|| priv
->mesh_open
)
128 if (priv
->mode
== IW_MODE_INFRA
)
129 lbs_cmd_80211_deauthenticate(priv
,
130 priv
->curbssparams
.bssid
,
131 WLAN_REASON_DEAUTH_LEAVING
);
132 else if (priv
->mode
== IW_MODE_ADHOC
)
133 lbs_adhoc_stop(priv
);
136 priv
->monitormode
= monitor_mode
;
138 if (!priv
->monitormode
)
140 priv
->monitormode
= 0;
141 lbs_remove_rtap(priv
);
143 if (priv
->currenttxskb
) {
144 dev_kfree_skb_any(priv
->currenttxskb
);
145 priv
->currenttxskb
= NULL
;
148 /* Wake queues, command thread, etc. */
149 lbs_host_to_card_done(priv
);
152 lbs_prepare_and_send_command(priv
,
153 CMD_802_11_MONITOR_MODE
, CMD_ACT_SET
,
154 CMD_OPTION_WAITFORRSP
, 0, &priv
->monitormode
);
159 * lbs_rtap attribute to be exported per ethX interface
160 * through sysfs (/sys/class/net/ethX/lbs_rtap)
162 static DEVICE_ATTR(lbs_rtap
, 0644, lbs_rtap_get
, lbs_rtap_set
);
165 * @brief This function opens the ethX interface
167 * @param dev A pointer to net_device structure
168 * @return 0 or -EBUSY if monitor mode active
170 static int lbs_dev_open(struct net_device
*dev
)
172 struct lbs_private
*priv
= dev
->ml_priv
;
175 lbs_deb_enter(LBS_DEB_NET
);
177 spin_lock_irq(&priv
->driver_lock
);
179 if (priv
->monitormode
) {
184 priv
->infra_open
= 1;
186 if (priv
->connect_status
== LBS_CONNECTED
)
187 netif_carrier_on(dev
);
189 netif_carrier_off(dev
);
191 if (!priv
->tx_pending_len
)
192 netif_wake_queue(dev
);
195 spin_unlock_irq(&priv
->driver_lock
);
196 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
201 * @brief This function closes the ethX interface
203 * @param dev A pointer to net_device structure
206 static int lbs_eth_stop(struct net_device
*dev
)
208 struct lbs_private
*priv
= dev
->ml_priv
;
210 lbs_deb_enter(LBS_DEB_NET
);
212 spin_lock_irq(&priv
->driver_lock
);
213 priv
->infra_open
= 0;
214 netif_stop_queue(dev
);
215 spin_unlock_irq(&priv
->driver_lock
);
217 schedule_work(&priv
->mcast_work
);
219 lbs_deb_leave(LBS_DEB_NET
);
223 static void lbs_tx_timeout(struct net_device
*dev
)
225 struct lbs_private
*priv
= dev
->ml_priv
;
227 lbs_deb_enter(LBS_DEB_TX
);
229 lbs_pr_err("tx watch dog timeout\n");
231 dev
->trans_start
= jiffies
;
233 if (priv
->currenttxskb
)
234 lbs_send_tx_feedback(priv
, 0);
236 /* XX: Shouldn't we also call into the hw-specific driver
237 to kick it somehow? */
238 lbs_host_to_card_done(priv
);
240 /* More often than not, this actually happens because the
241 firmware has crapped itself -- rather than just a very
242 busy medium. So send a harmless command, and if/when
243 _that_ times out, we'll kick it in the head. */
244 lbs_prepare_and_send_command(priv
, CMD_802_11_RSSI
, 0,
247 lbs_deb_leave(LBS_DEB_TX
);
250 void lbs_host_to_card_done(struct lbs_private
*priv
)
254 lbs_deb_enter(LBS_DEB_THREAD
);
256 spin_lock_irqsave(&priv
->driver_lock
, flags
);
258 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
260 /* Wake main thread if commands are pending */
261 if (!priv
->cur_cmd
|| priv
->tx_pending_len
> 0) {
262 if (!priv
->wakeup_dev_required
)
263 wake_up_interruptible(&priv
->waitq
);
266 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
267 lbs_deb_leave(LBS_DEB_THREAD
);
269 EXPORT_SYMBOL_GPL(lbs_host_to_card_done
);
271 int lbs_set_mac_address(struct net_device
*dev
, void *addr
)
274 struct lbs_private
*priv
= dev
->ml_priv
;
275 struct sockaddr
*phwaddr
= addr
;
276 struct cmd_ds_802_11_mac_address cmd
;
278 lbs_deb_enter(LBS_DEB_NET
);
280 /* In case it was called from the mesh device */
283 cmd
.hdr
.size
= cpu_to_le16(sizeof(cmd
));
284 cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
285 memcpy(cmd
.macadd
, phwaddr
->sa_data
, ETH_ALEN
);
287 ret
= lbs_cmd_with_response(priv
, CMD_802_11_MAC_ADDRESS
, &cmd
);
289 lbs_deb_net("set MAC address failed\n");
293 memcpy(priv
->current_addr
, phwaddr
->sa_data
, ETH_ALEN
);
294 memcpy(dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
296 memcpy(priv
->mesh_dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
299 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
304 static inline int mac_in_list(unsigned char *list
, int list_len
,
308 if (!memcmp(list
, mac
, ETH_ALEN
))
317 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr
*cmd
,
318 struct net_device
*dev
, int nr_addrs
)
321 struct dev_mc_list
*mc_list
;
323 if ((dev
->flags
& (IFF_UP
|IFF_MULTICAST
)) != (IFF_UP
|IFF_MULTICAST
))
326 netif_addr_lock_bh(dev
);
327 for (mc_list
= dev
->mc_list
; mc_list
; mc_list
= mc_list
->next
) {
328 if (mac_in_list(cmd
->maclist
, nr_addrs
, mc_list
->dmi_addr
)) {
329 lbs_deb_net("mcast address %s:%pM skipped\n", dev
->name
,
334 if (i
== MRVDRV_MAX_MULTICAST_LIST_SIZE
)
336 memcpy(&cmd
->maclist
[6*i
], mc_list
->dmi_addr
, ETH_ALEN
);
337 lbs_deb_net("mcast address %s:%pM added to filter\n", dev
->name
,
341 netif_addr_unlock_bh(dev
);
348 static void lbs_set_mcast_worker(struct work_struct
*work
)
350 struct lbs_private
*priv
= container_of(work
, struct lbs_private
, mcast_work
);
351 struct cmd_ds_mac_multicast_adr mcast_cmd
;
354 int old_mac_control
= priv
->mac_control
;
356 lbs_deb_enter(LBS_DEB_NET
);
358 dev_flags
= priv
->dev
->flags
;
360 dev_flags
|= priv
->mesh_dev
->flags
;
362 if (dev_flags
& IFF_PROMISC
) {
363 priv
->mac_control
|= CMD_ACT_MAC_PROMISCUOUS_ENABLE
;
364 priv
->mac_control
&= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE
|
365 CMD_ACT_MAC_MULTICAST_ENABLE
);
366 goto out_set_mac_control
;
367 } else if (dev_flags
& IFF_ALLMULTI
) {
369 priv
->mac_control
|= CMD_ACT_MAC_ALL_MULTICAST_ENABLE
;
370 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
371 CMD_ACT_MAC_MULTICAST_ENABLE
);
372 goto out_set_mac_control
;
375 /* Once for priv->dev, again for priv->mesh_dev if it exists */
376 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->dev
, 0);
377 if (nr_addrs
>= 0 && priv
->mesh_dev
)
378 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->mesh_dev
, nr_addrs
);
383 int size
= offsetof(struct cmd_ds_mac_multicast_adr
,
384 maclist
[6*nr_addrs
]);
386 mcast_cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
387 mcast_cmd
.hdr
.size
= cpu_to_le16(size
);
388 mcast_cmd
.nr_of_adrs
= cpu_to_le16(nr_addrs
);
390 lbs_cmd_async(priv
, CMD_MAC_MULTICAST_ADR
, &mcast_cmd
.hdr
, size
);
392 priv
->mac_control
|= CMD_ACT_MAC_MULTICAST_ENABLE
;
394 priv
->mac_control
&= ~CMD_ACT_MAC_MULTICAST_ENABLE
;
396 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
397 CMD_ACT_MAC_ALL_MULTICAST_ENABLE
);
399 if (priv
->mac_control
!= old_mac_control
)
400 lbs_set_mac_control(priv
);
402 lbs_deb_leave(LBS_DEB_NET
);
405 void lbs_set_multicast_list(struct net_device
*dev
)
407 struct lbs_private
*priv
= dev
->ml_priv
;
409 schedule_work(&priv
->mcast_work
);
413 * @brief This function handles the major jobs in the LBS driver.
414 * It handles all events generated by firmware, RX data received
415 * from firmware and TX data sent from kernel.
417 * @param data A pointer to lbs_thread structure
420 static int lbs_thread(void *data
)
422 struct net_device
*dev
= data
;
423 struct lbs_private
*priv
= dev
->ml_priv
;
426 lbs_deb_enter(LBS_DEB_THREAD
);
428 init_waitqueue_entry(&wait
, current
);
434 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
435 priv
->currenttxskb
, priv
->dnld_sent
);
437 add_wait_queue(&priv
->waitq
, &wait
);
438 set_current_state(TASK_INTERRUPTIBLE
);
439 spin_lock_irq(&priv
->driver_lock
);
441 if (kthread_should_stop())
442 shouldsleep
= 0; /* Bye */
443 else if (priv
->surpriseremoved
)
444 shouldsleep
= 1; /* We need to wait until we're _told_ to die */
445 else if (priv
->psstate
== PS_STATE_SLEEP
)
446 shouldsleep
= 1; /* Sleep mode. Nothing we can do till it wakes */
447 else if (priv
->cmd_timed_out
)
448 shouldsleep
= 0; /* Command timed out. Recover */
449 else if (!priv
->fw_ready
)
450 shouldsleep
= 1; /* Firmware not ready. We're waiting for it */
451 else if (priv
->dnld_sent
)
452 shouldsleep
= 1; /* Something is en route to the device already */
453 else if (priv
->tx_pending_len
> 0)
454 shouldsleep
= 0; /* We've a packet to send */
455 else if (priv
->resp_len
[priv
->resp_idx
])
456 shouldsleep
= 0; /* We have a command response */
457 else if (priv
->cur_cmd
)
458 shouldsleep
= 1; /* Can't send a command; one already running */
459 else if (!list_empty(&priv
->cmdpendingq
) &&
460 !(priv
->wakeup_dev_required
))
461 shouldsleep
= 0; /* We have a command to send */
462 else if (kfifo_len(&priv
->event_fifo
))
463 shouldsleep
= 0; /* We have an event to process */
465 shouldsleep
= 1; /* No command */
468 lbs_deb_thread("sleeping, connect_status %d, "
469 "psmode %d, psstate %d\n",
470 priv
->connect_status
,
471 priv
->psmode
, priv
->psstate
);
472 spin_unlock_irq(&priv
->driver_lock
);
475 spin_unlock_irq(&priv
->driver_lock
);
477 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
478 priv
->currenttxskb
, priv
->dnld_sent
);
480 set_current_state(TASK_RUNNING
);
481 remove_wait_queue(&priv
->waitq
, &wait
);
483 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
484 priv
->currenttxskb
, priv
->dnld_sent
);
486 if (kthread_should_stop()) {
487 lbs_deb_thread("break from main thread\n");
491 if (priv
->surpriseremoved
) {
492 lbs_deb_thread("adapter removed; waiting to die...\n");
496 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
497 priv
->currenttxskb
, priv
->dnld_sent
);
499 /* Process any pending command response */
500 spin_lock_irq(&priv
->driver_lock
);
501 resp_idx
= priv
->resp_idx
;
502 if (priv
->resp_len
[resp_idx
]) {
503 spin_unlock_irq(&priv
->driver_lock
);
504 lbs_process_command_response(priv
,
505 priv
->resp_buf
[resp_idx
],
506 priv
->resp_len
[resp_idx
]);
507 spin_lock_irq(&priv
->driver_lock
);
508 priv
->resp_len
[resp_idx
] = 0;
510 spin_unlock_irq(&priv
->driver_lock
);
512 /* Process hardware events, e.g. card removed, link lost */
513 spin_lock_irq(&priv
->driver_lock
);
514 while (kfifo_len(&priv
->event_fifo
)) {
517 kfifo_out(&priv
->event_fifo
, (unsigned char *) &event
,
519 spin_unlock_irq(&priv
->driver_lock
);
520 lbs_process_event(priv
, event
);
521 spin_lock_irq(&priv
->driver_lock
);
523 spin_unlock_irq(&priv
->driver_lock
);
525 if (priv
->wakeup_dev_required
) {
526 lbs_deb_thread("Waking up device...\n");
528 if (priv
->exit_deep_sleep(priv
))
529 lbs_deb_thread("Wakeup device failed\n");
533 /* command timeout stuff */
534 if (priv
->cmd_timed_out
&& priv
->cur_cmd
) {
535 struct cmd_ctrl_node
*cmdnode
= priv
->cur_cmd
;
537 if (++priv
->nr_retries
> 3) {
538 lbs_pr_info("Excessive timeouts submitting "
540 le16_to_cpu(cmdnode
->cmdbuf
->command
));
541 lbs_complete_command(priv
, cmdnode
, -ETIMEDOUT
);
542 priv
->nr_retries
= 0;
543 if (priv
->reset_card
)
544 priv
->reset_card(priv
);
546 priv
->cur_cmd
= NULL
;
547 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
548 lbs_pr_info("requeueing command 0x%04x due "
549 "to timeout (#%d)\n",
550 le16_to_cpu(cmdnode
->cmdbuf
->command
),
553 /* Stick it back at the _top_ of the pending queue
554 for immediate resubmission */
555 list_add(&cmdnode
->list
, &priv
->cmdpendingq
);
558 priv
->cmd_timed_out
= 0;
565 /* Check if we need to confirm Sleep Request received previously */
566 if (priv
->psstate
== PS_STATE_PRE_SLEEP
&&
567 !priv
->dnld_sent
&& !priv
->cur_cmd
) {
568 if (priv
->connect_status
== LBS_CONNECTED
) {
569 lbs_deb_thread("pre-sleep, currenttxskb %p, "
570 "dnld_sent %d, cur_cmd %p\n",
571 priv
->currenttxskb
, priv
->dnld_sent
,
574 lbs_ps_confirm_sleep(priv
);
576 /* workaround for firmware sending
577 * deauth/linkloss event immediately
578 * after sleep request; remove this
579 * after firmware fixes it
581 priv
->psstate
= PS_STATE_AWAKE
;
582 lbs_pr_alert("ignore PS_SleepConfirm in "
583 "non-connected state\n");
587 /* The PS state is changed during processing of Sleep Request
590 if ((priv
->psstate
== PS_STATE_SLEEP
) ||
591 (priv
->psstate
== PS_STATE_PRE_SLEEP
))
594 if (priv
->is_deep_sleep
)
597 /* Execute the next command */
598 if (!priv
->dnld_sent
&& !priv
->cur_cmd
)
599 lbs_execute_next_command(priv
);
601 /* Wake-up command waiters which can't sleep in
602 * lbs_prepare_and_send_command
604 if (!list_empty(&priv
->cmdpendingq
))
605 wake_up_all(&priv
->cmd_pending
);
607 spin_lock_irq(&priv
->driver_lock
);
608 if (!priv
->dnld_sent
&& priv
->tx_pending_len
> 0) {
609 int ret
= priv
->hw_host_to_card(priv
, MVMS_DAT
,
610 priv
->tx_pending_buf
,
611 priv
->tx_pending_len
);
613 lbs_deb_tx("host_to_card failed %d\n", ret
);
614 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
616 priv
->tx_pending_len
= 0;
617 if (!priv
->currenttxskb
) {
618 /* We can wake the queues immediately if we aren't
619 waiting for TX feedback */
620 if (priv
->connect_status
== LBS_CONNECTED
)
621 netif_wake_queue(priv
->dev
);
622 if (priv
->mesh_dev
&&
623 priv
->mesh_connect_status
== LBS_CONNECTED
)
624 netif_wake_queue(priv
->mesh_dev
);
627 spin_unlock_irq(&priv
->driver_lock
);
630 del_timer(&priv
->command_timer
);
631 del_timer(&priv
->auto_deepsleep_timer
);
632 wake_up_all(&priv
->cmd_pending
);
634 lbs_deb_leave(LBS_DEB_THREAD
);
638 static int lbs_suspend_callback(struct lbs_private
*priv
, unsigned long dummy
,
639 struct cmd_header
*cmd
)
641 lbs_deb_enter(LBS_DEB_FW
);
643 netif_device_detach(priv
->dev
);
645 netif_device_detach(priv
->mesh_dev
);
648 lbs_deb_leave(LBS_DEB_FW
);
652 int lbs_suspend(struct lbs_private
*priv
)
654 struct cmd_header cmd
;
657 lbs_deb_enter(LBS_DEB_FW
);
659 if (priv
->wol_criteria
== 0xffffffff) {
660 lbs_pr_info("Suspend attempt without configuring wake params!\n");
664 memset(&cmd
, 0, sizeof(cmd
));
666 ret
= __lbs_cmd(priv
, CMD_802_11_HOST_SLEEP_ACTIVATE
, &cmd
,
667 sizeof(cmd
), lbs_suspend_callback
, 0);
669 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret
);
671 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
674 EXPORT_SYMBOL_GPL(lbs_suspend
);
676 void lbs_resume(struct lbs_private
*priv
)
678 lbs_deb_enter(LBS_DEB_FW
);
682 /* Firmware doesn't seem to give us RX packets any more
683 until we send it some command. Might as well update */
684 lbs_prepare_and_send_command(priv
, CMD_802_11_RSSI
, 0,
687 netif_device_attach(priv
->dev
);
689 netif_device_attach(priv
->mesh_dev
);
691 lbs_deb_leave(LBS_DEB_FW
);
693 EXPORT_SYMBOL_GPL(lbs_resume
);
696 * @brief This function gets the HW spec from the firmware and sets
697 * some basic parameters.
699 * @param priv A pointer to struct lbs_private structure
702 static int lbs_setup_firmware(struct lbs_private
*priv
)
705 s16 curlevel
= 0, minlevel
= 0, maxlevel
= 0;
707 lbs_deb_enter(LBS_DEB_FW
);
709 /* Read MAC address from firmware */
710 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
711 ret
= lbs_update_hw_spec(priv
);
715 /* Read power levels if available */
716 ret
= lbs_get_tx_power(priv
, &curlevel
, &minlevel
, &maxlevel
);
718 priv
->txpower_cur
= curlevel
;
719 priv
->txpower_min
= minlevel
;
720 priv
->txpower_max
= maxlevel
;
723 lbs_set_mac_control(priv
);
725 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
730 * This function handles the timeout of command sending.
731 * It will re-send the same command again.
733 static void command_timer_fn(unsigned long data
)
735 struct lbs_private
*priv
= (struct lbs_private
*)data
;
738 lbs_deb_enter(LBS_DEB_CMD
);
739 spin_lock_irqsave(&priv
->driver_lock
, flags
);
744 lbs_pr_info("command 0x%04x timed out\n",
745 le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
));
747 priv
->cmd_timed_out
= 1;
748 wake_up_interruptible(&priv
->waitq
);
750 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
751 lbs_deb_leave(LBS_DEB_CMD
);
755 * This function put the device back to deep sleep mode when timer expires
756 * and no activity (command, event, data etc.) is detected.
758 static void auto_deepsleep_timer_fn(unsigned long data
)
760 struct lbs_private
*priv
= (struct lbs_private
*)data
;
763 lbs_deb_enter(LBS_DEB_CMD
);
765 if (priv
->is_activity_detected
) {
766 priv
->is_activity_detected
= 0;
768 if (priv
->is_auto_deep_sleep_enabled
&&
769 (!priv
->wakeup_dev_required
) &&
770 (priv
->connect_status
!= LBS_CONNECTED
)) {
771 lbs_deb_main("Entering auto deep sleep mode...\n");
772 ret
= lbs_prepare_and_send_command(priv
,
773 CMD_802_11_DEEP_SLEEP
, 0,
776 lbs_pr_err("Enter Deep Sleep command failed\n");
779 mod_timer(&priv
->auto_deepsleep_timer
, jiffies
+
780 (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
781 lbs_deb_leave(LBS_DEB_CMD
);
784 int lbs_enter_auto_deep_sleep(struct lbs_private
*priv
)
786 lbs_deb_enter(LBS_DEB_SDIO
);
788 priv
->is_auto_deep_sleep_enabled
= 1;
789 if (priv
->is_deep_sleep
)
790 priv
->wakeup_dev_required
= 1;
791 mod_timer(&priv
->auto_deepsleep_timer
,
792 jiffies
+ (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
794 lbs_deb_leave(LBS_DEB_SDIO
);
798 int lbs_exit_auto_deep_sleep(struct lbs_private
*priv
)
800 lbs_deb_enter(LBS_DEB_SDIO
);
802 priv
->is_auto_deep_sleep_enabled
= 0;
803 priv
->auto_deep_sleep_timeout
= 0;
804 del_timer(&priv
->auto_deepsleep_timer
);
806 lbs_deb_leave(LBS_DEB_SDIO
);
810 static void lbs_sync_channel_worker(struct work_struct
*work
)
812 struct lbs_private
*priv
= container_of(work
, struct lbs_private
,
815 lbs_deb_enter(LBS_DEB_MAIN
);
816 if (lbs_update_channel(priv
))
817 lbs_pr_info("Channel synchronization failed.");
818 lbs_deb_leave(LBS_DEB_MAIN
);
822 static int lbs_init_adapter(struct lbs_private
*priv
)
827 lbs_deb_enter(LBS_DEB_MAIN
);
829 /* Allocate buffer to store the BSSID list */
830 bufsize
= MAX_NETWORK_COUNT
* sizeof(struct bss_descriptor
);
831 priv
->networks
= kzalloc(bufsize
, GFP_KERNEL
);
832 if (!priv
->networks
) {
833 lbs_pr_err("Out of memory allocating beacons\n");
838 /* Initialize scan result lists */
839 INIT_LIST_HEAD(&priv
->network_free_list
);
840 INIT_LIST_HEAD(&priv
->network_list
);
841 for (i
= 0; i
< MAX_NETWORK_COUNT
; i
++) {
842 list_add_tail(&priv
->networks
[i
].list
,
843 &priv
->network_free_list
);
846 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
848 priv
->connect_status
= LBS_DISCONNECTED
;
849 priv
->mesh_connect_status
= LBS_DISCONNECTED
;
850 priv
->secinfo
.auth_mode
= IW_AUTH_ALG_OPEN_SYSTEM
;
851 priv
->mode
= IW_MODE_INFRA
;
852 priv
->channel
= DEFAULT_AD_HOC_CHANNEL
;
853 priv
->mac_control
= CMD_ACT_MAC_RX_ON
| CMD_ACT_MAC_TX_ON
;
855 priv
->enablehwauto
= 1;
856 priv
->capability
= WLAN_CAPABILITY_SHORT_PREAMBLE
;
857 priv
->psmode
= LBS802_11POWERMODECAM
;
858 priv
->psstate
= PS_STATE_FULL_POWER
;
859 priv
->is_deep_sleep
= 0;
860 priv
->is_auto_deep_sleep_enabled
= 0;
861 priv
->wakeup_dev_required
= 0;
862 init_waitqueue_head(&priv
->ds_awake_q
);
864 mutex_init(&priv
->lock
);
866 setup_timer(&priv
->command_timer
, command_timer_fn
,
867 (unsigned long)priv
);
868 setup_timer(&priv
->auto_deepsleep_timer
, auto_deepsleep_timer_fn
,
869 (unsigned long)priv
);
871 INIT_LIST_HEAD(&priv
->cmdfreeq
);
872 INIT_LIST_HEAD(&priv
->cmdpendingq
);
874 spin_lock_init(&priv
->driver_lock
);
875 init_waitqueue_head(&priv
->cmd_pending
);
877 /* Allocate the command buffers */
878 if (lbs_allocate_cmd_buffer(priv
)) {
879 lbs_pr_err("Out of memory allocating command buffers\n");
884 priv
->resp_len
[0] = priv
->resp_len
[1] = 0;
886 /* Create the event FIFO */
887 ret
= kfifo_alloc(&priv
->event_fifo
, sizeof(u32
) * 16, GFP_KERNEL
);
889 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
894 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
899 static void lbs_free_adapter(struct lbs_private
*priv
)
901 lbs_deb_enter(LBS_DEB_MAIN
);
903 lbs_free_cmd_buffer(priv
);
904 kfifo_free(&priv
->event_fifo
);
905 del_timer(&priv
->command_timer
);
906 del_timer(&priv
->auto_deepsleep_timer
);
907 kfree(priv
->networks
);
908 priv
->networks
= NULL
;
910 lbs_deb_leave(LBS_DEB_MAIN
);
913 static const struct net_device_ops lbs_netdev_ops
= {
914 .ndo_open
= lbs_dev_open
,
915 .ndo_stop
= lbs_eth_stop
,
916 .ndo_start_xmit
= lbs_hard_start_xmit
,
917 .ndo_set_mac_address
= lbs_set_mac_address
,
918 .ndo_tx_timeout
= lbs_tx_timeout
,
919 .ndo_set_multicast_list
= lbs_set_multicast_list
,
920 .ndo_change_mtu
= eth_change_mtu
,
921 .ndo_validate_addr
= eth_validate_addr
,
925 * @brief This function adds the card. it will probe the
926 * card, allocate the lbs_priv and initialize the device.
928 * @param card A pointer to card
929 * @return A pointer to struct lbs_private structure
931 struct lbs_private
*lbs_add_card(void *card
, struct device
*dmdev
)
933 struct net_device
*dev
;
934 struct wireless_dev
*wdev
;
935 struct lbs_private
*priv
= NULL
;
937 lbs_deb_enter(LBS_DEB_MAIN
);
939 /* Allocate an Ethernet device and register it */
940 wdev
= lbs_cfg_alloc(dmdev
);
942 lbs_pr_err("cfg80211 init failed\n");
946 wdev
->iftype
= NL80211_IFTYPE_STATION
;
947 priv
= wdev_priv(wdev
);
950 if (lbs_init_adapter(priv
)) {
951 lbs_pr_err("failed to initialize adapter structure.\n");
955 //TODO? dev = alloc_netdev_mq(0, "wlan%d", ether_setup, IWM_TX_QUEUES);
956 dev
= alloc_netdev(0, "wlan%d", ether_setup
);
958 dev_err(dmdev
, "no memory for network device instance\n");
962 dev
->ieee80211_ptr
= wdev
;
964 SET_NETDEV_DEV(dev
, dmdev
);
968 dev
->netdev_ops
= &lbs_netdev_ops
;
969 dev
->watchdog_timeo
= 5 * HZ
;
970 dev
->ethtool_ops
= &lbs_ethtool_ops
;
972 dev
->wireless_handlers
= &lbs_handler_def
;
974 dev
->flags
|= IFF_BROADCAST
| IFF_MULTICAST
;
977 // TODO: kzalloc + iwm_init_default_profile(iwm, iwm->umac_profile); ??
981 priv
->infra_open
= 0;
984 priv
->rtap_net_dev
= NULL
;
985 strcpy(dev
->name
, "wlan%d");
987 lbs_deb_thread("Starting main thread...\n");
988 init_waitqueue_head(&priv
->waitq
);
989 priv
->main_thread
= kthread_run(lbs_thread
, dev
, "lbs_main");
990 if (IS_ERR(priv
->main_thread
)) {
991 lbs_deb_thread("Error creating main thread.\n");
995 priv
->work_thread
= create_singlethread_workqueue("lbs_worker");
996 INIT_DELAYED_WORK(&priv
->assoc_work
, lbs_association_worker
);
997 INIT_DELAYED_WORK(&priv
->scan_work
, lbs_scan_worker
);
998 INIT_WORK(&priv
->mcast_work
, lbs_set_mcast_worker
);
999 INIT_WORK(&priv
->sync_channel
, lbs_sync_channel_worker
);
1001 priv
->mesh_open
= 0;
1002 sprintf(priv
->mesh_ssid
, "mesh");
1003 priv
->mesh_ssid_len
= 4;
1005 priv
->wol_criteria
= 0xffffffff;
1006 priv
->wol_gpio
= 0xff;
1014 lbs_free_adapter(priv
);
1022 lbs_deb_leave_args(LBS_DEB_MAIN
, "priv %p", priv
);
1025 EXPORT_SYMBOL_GPL(lbs_add_card
);
1028 void lbs_remove_card(struct lbs_private
*priv
)
1030 struct net_device
*dev
= priv
->dev
;
1032 lbs_deb_enter(LBS_DEB_MAIN
);
1034 lbs_remove_mesh(priv
);
1035 lbs_remove_rtap(priv
);
1039 cancel_delayed_work_sync(&priv
->scan_work
);
1040 cancel_delayed_work_sync(&priv
->assoc_work
);
1041 cancel_work_sync(&priv
->mcast_work
);
1043 /* worker thread destruction blocks on the in-flight command which
1044 * should have been cleared already in lbs_stop_card().
1046 lbs_deb_main("destroying worker thread\n");
1047 destroy_workqueue(priv
->work_thread
);
1048 lbs_deb_main("done destroying worker thread\n");
1050 if (priv
->psmode
== LBS802_11POWERMODEMAX_PSP
) {
1051 priv
->psmode
= LBS802_11POWERMODECAM
;
1052 lbs_ps_wakeup(priv
, CMD_OPTION_WAITFORRSP
);
1055 lbs_send_disconnect_notification(priv
);
1057 if (priv
->is_deep_sleep
) {
1058 priv
->is_deep_sleep
= 0;
1059 wake_up_interruptible(&priv
->ds_awake_q
);
1062 /* Stop the thread servicing the interrupts */
1063 priv
->surpriseremoved
= 1;
1064 kthread_stop(priv
->main_thread
);
1066 lbs_free_adapter(priv
);
1072 lbs_deb_leave(LBS_DEB_MAIN
);
1074 EXPORT_SYMBOL_GPL(lbs_remove_card
);
1077 int lbs_start_card(struct lbs_private
*priv
)
1079 struct net_device
*dev
= priv
->dev
;
1082 lbs_deb_enter(LBS_DEB_MAIN
);
1084 /* poke the firmware */
1085 ret
= lbs_setup_firmware(priv
);
1089 if (lbs_cfg_register(priv
)) {
1090 lbs_pr_err("cannot register device\n");
1094 lbs_update_channel(priv
);
1097 * While rtap isn't related to mesh, only mesh-enabled
1098 * firmware implements the rtap functionality via
1099 * CMD_802_11_MONITOR_MODE.
1101 if (lbs_init_mesh(priv
)) {
1102 if (device_create_file(&dev
->dev
, &dev_attr_lbs_rtap
))
1103 lbs_pr_err("cannot register lbs_rtap attribute\n");
1106 lbs_debugfs_init_one(priv
, dev
);
1108 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev
->name
);
1113 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
1116 EXPORT_SYMBOL_GPL(lbs_start_card
);
1119 void lbs_stop_card(struct lbs_private
*priv
)
1121 struct net_device
*dev
;
1122 struct cmd_ctrl_node
*cmdnode
;
1123 unsigned long flags
;
1125 lbs_deb_enter(LBS_DEB_MAIN
);
1131 netif_stop_queue(dev
);
1132 netif_carrier_off(dev
);
1134 lbs_debugfs_remove_one(priv
);
1135 if (lbs_deinit_mesh(priv
))
1136 device_remove_file(&dev
->dev
, &dev_attr_lbs_rtap
);
1138 /* Delete the timeout of the currently processing command */
1139 del_timer_sync(&priv
->command_timer
);
1140 del_timer_sync(&priv
->auto_deepsleep_timer
);
1142 /* Flush pending command nodes */
1143 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1144 lbs_deb_main("clearing pending commands\n");
1145 list_for_each_entry(cmdnode
, &priv
->cmdpendingq
, list
) {
1146 cmdnode
->result
= -ENOENT
;
1147 cmdnode
->cmdwaitqwoken
= 1;
1148 wake_up_interruptible(&cmdnode
->cmdwait_q
);
1151 /* Flush the command the card is currently processing */
1152 if (priv
->cur_cmd
) {
1153 lbs_deb_main("clearing current command\n");
1154 priv
->cur_cmd
->result
= -ENOENT
;
1155 priv
->cur_cmd
->cmdwaitqwoken
= 1;
1156 wake_up_interruptible(&priv
->cur_cmd
->cmdwait_q
);
1158 lbs_deb_main("done clearing commands\n");
1159 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1161 unregister_netdev(dev
);
1164 lbs_deb_leave(LBS_DEB_MAIN
);
1166 EXPORT_SYMBOL_GPL(lbs_stop_card
);
1169 void lbs_queue_event(struct lbs_private
*priv
, u32 event
)
1171 unsigned long flags
;
1173 lbs_deb_enter(LBS_DEB_THREAD
);
1174 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1176 if (priv
->psstate
== PS_STATE_SLEEP
)
1177 priv
->psstate
= PS_STATE_AWAKE
;
1179 kfifo_in(&priv
->event_fifo
, (unsigned char *) &event
, sizeof(u32
));
1181 wake_up_interruptible(&priv
->waitq
);
1183 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1184 lbs_deb_leave(LBS_DEB_THREAD
);
1186 EXPORT_SYMBOL_GPL(lbs_queue_event
);
1188 void lbs_notify_command_response(struct lbs_private
*priv
, u8 resp_idx
)
1190 lbs_deb_enter(LBS_DEB_THREAD
);
1192 if (priv
->psstate
== PS_STATE_SLEEP
)
1193 priv
->psstate
= PS_STATE_AWAKE
;
1195 /* Swap buffers by flipping the response index */
1196 BUG_ON(resp_idx
> 1);
1197 priv
->resp_idx
= resp_idx
;
1199 wake_up_interruptible(&priv
->waitq
);
1201 lbs_deb_leave(LBS_DEB_THREAD
);
1203 EXPORT_SYMBOL_GPL(lbs_notify_command_response
);
1205 static int __init
lbs_init_module(void)
1207 lbs_deb_enter(LBS_DEB_MAIN
);
1208 memset(&confirm_sleep
, 0, sizeof(confirm_sleep
));
1209 confirm_sleep
.hdr
.command
= cpu_to_le16(CMD_802_11_PS_MODE
);
1210 confirm_sleep
.hdr
.size
= cpu_to_le16(sizeof(confirm_sleep
));
1211 confirm_sleep
.action
= cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED
);
1213 lbs_deb_leave(LBS_DEB_MAIN
);
1217 static void __exit
lbs_exit_module(void)
1219 lbs_deb_enter(LBS_DEB_MAIN
);
1220 lbs_debugfs_remove();
1221 lbs_deb_leave(LBS_DEB_MAIN
);
1225 * rtap interface support fuctions
1228 static int lbs_rtap_open(struct net_device
*dev
)
1230 /* Yes, _stop_ the queue. Because we don't support injection */
1231 lbs_deb_enter(LBS_DEB_MAIN
);
1232 netif_carrier_off(dev
);
1233 netif_stop_queue(dev
);
1234 lbs_deb_leave(LBS_DEB_LEAVE
);
1238 static int lbs_rtap_stop(struct net_device
*dev
)
1240 lbs_deb_enter(LBS_DEB_MAIN
);
1241 lbs_deb_leave(LBS_DEB_MAIN
);
1245 static netdev_tx_t
lbs_rtap_hard_start_xmit(struct sk_buff
*skb
,
1246 struct net_device
*dev
)
1248 netif_stop_queue(dev
);
1249 return NETDEV_TX_BUSY
;
1252 static void lbs_remove_rtap(struct lbs_private
*priv
)
1254 lbs_deb_enter(LBS_DEB_MAIN
);
1255 if (priv
->rtap_net_dev
== NULL
)
1257 unregister_netdev(priv
->rtap_net_dev
);
1258 free_netdev(priv
->rtap_net_dev
);
1259 priv
->rtap_net_dev
= NULL
;
1261 lbs_deb_leave(LBS_DEB_MAIN
);
1264 static const struct net_device_ops rtap_netdev_ops
= {
1265 .ndo_open
= lbs_rtap_open
,
1266 .ndo_stop
= lbs_rtap_stop
,
1267 .ndo_start_xmit
= lbs_rtap_hard_start_xmit
,
1270 static int lbs_add_rtap(struct lbs_private
*priv
)
1273 struct net_device
*rtap_dev
;
1275 lbs_deb_enter(LBS_DEB_MAIN
);
1276 if (priv
->rtap_net_dev
) {
1281 rtap_dev
= alloc_netdev(0, "rtap%d", ether_setup
);
1282 if (rtap_dev
== NULL
) {
1287 memcpy(rtap_dev
->dev_addr
, priv
->current_addr
, ETH_ALEN
);
1288 rtap_dev
->type
= ARPHRD_IEEE80211_RADIOTAP
;
1289 rtap_dev
->netdev_ops
= &rtap_netdev_ops
;
1290 rtap_dev
->ml_priv
= priv
;
1291 SET_NETDEV_DEV(rtap_dev
, priv
->dev
->dev
.parent
);
1293 ret
= register_netdev(rtap_dev
);
1295 free_netdev(rtap_dev
);
1298 priv
->rtap_net_dev
= rtap_dev
;
1301 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
1305 module_init(lbs_init_module
);
1306 module_exit(lbs_exit_module
);
1308 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1309 MODULE_AUTHOR("Marvell International Ltd.");
1310 MODULE_LICENSE("GPL");