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");