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 /* FIXME: reset the card */
162 lbs_deb_leave(LBS_DEB_TX
);
165 void lbs_host_to_card_done(struct lbs_private
*priv
)
169 lbs_deb_enter(LBS_DEB_THREAD
);
171 spin_lock_irqsave(&priv
->driver_lock
, flags
);
173 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
175 /* Wake main thread if commands are pending */
176 if (!priv
->cur_cmd
|| priv
->tx_pending_len
> 0) {
177 if (!priv
->wakeup_dev_required
)
178 wake_up_interruptible(&priv
->waitq
);
181 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
182 lbs_deb_leave(LBS_DEB_THREAD
);
184 EXPORT_SYMBOL_GPL(lbs_host_to_card_done
);
186 int lbs_set_mac_address(struct net_device
*dev
, void *addr
)
189 struct lbs_private
*priv
= dev
->ml_priv
;
190 struct sockaddr
*phwaddr
= addr
;
191 struct cmd_ds_802_11_mac_address cmd
;
193 lbs_deb_enter(LBS_DEB_NET
);
195 /* In case it was called from the mesh device */
198 cmd
.hdr
.size
= cpu_to_le16(sizeof(cmd
));
199 cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
200 memcpy(cmd
.macadd
, phwaddr
->sa_data
, ETH_ALEN
);
202 ret
= lbs_cmd_with_response(priv
, CMD_802_11_MAC_ADDRESS
, &cmd
);
204 lbs_deb_net("set MAC address failed\n");
208 memcpy(priv
->current_addr
, phwaddr
->sa_data
, ETH_ALEN
);
209 memcpy(dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
211 memcpy(priv
->mesh_dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
214 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
219 static inline int mac_in_list(unsigned char *list
, int list_len
,
223 if (!memcmp(list
, mac
, ETH_ALEN
))
232 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr
*cmd
,
233 struct net_device
*dev
, int nr_addrs
)
236 struct netdev_hw_addr
*ha
;
239 if ((dev
->flags
& (IFF_UP
|IFF_MULTICAST
)) != (IFF_UP
|IFF_MULTICAST
))
242 netif_addr_lock_bh(dev
);
243 cnt
= netdev_mc_count(dev
);
244 netdev_for_each_mc_addr(ha
, dev
) {
245 if (mac_in_list(cmd
->maclist
, nr_addrs
, ha
->addr
)) {
246 lbs_deb_net("mcast address %s:%pM skipped\n", dev
->name
,
252 if (i
== MRVDRV_MAX_MULTICAST_LIST_SIZE
)
254 memcpy(&cmd
->maclist
[6*i
], ha
->addr
, ETH_ALEN
);
255 lbs_deb_net("mcast address %s:%pM added to filter\n", dev
->name
,
260 netif_addr_unlock_bh(dev
);
267 static void lbs_set_mcast_worker(struct work_struct
*work
)
269 struct lbs_private
*priv
= container_of(work
, struct lbs_private
, mcast_work
);
270 struct cmd_ds_mac_multicast_adr mcast_cmd
;
273 int old_mac_control
= priv
->mac_control
;
275 lbs_deb_enter(LBS_DEB_NET
);
277 dev_flags
= priv
->dev
->flags
;
279 dev_flags
|= priv
->mesh_dev
->flags
;
281 if (dev_flags
& IFF_PROMISC
) {
282 priv
->mac_control
|= CMD_ACT_MAC_PROMISCUOUS_ENABLE
;
283 priv
->mac_control
&= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE
|
284 CMD_ACT_MAC_MULTICAST_ENABLE
);
285 goto out_set_mac_control
;
286 } else if (dev_flags
& IFF_ALLMULTI
) {
288 priv
->mac_control
|= CMD_ACT_MAC_ALL_MULTICAST_ENABLE
;
289 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
290 CMD_ACT_MAC_MULTICAST_ENABLE
);
291 goto out_set_mac_control
;
294 /* Once for priv->dev, again for priv->mesh_dev if it exists */
295 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->dev
, 0);
296 if (nr_addrs
>= 0 && priv
->mesh_dev
)
297 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->mesh_dev
, nr_addrs
);
302 int size
= offsetof(struct cmd_ds_mac_multicast_adr
,
303 maclist
[6*nr_addrs
]);
305 mcast_cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
306 mcast_cmd
.hdr
.size
= cpu_to_le16(size
);
307 mcast_cmd
.nr_of_adrs
= cpu_to_le16(nr_addrs
);
309 lbs_cmd_async(priv
, CMD_MAC_MULTICAST_ADR
, &mcast_cmd
.hdr
, size
);
311 priv
->mac_control
|= CMD_ACT_MAC_MULTICAST_ENABLE
;
313 priv
->mac_control
&= ~CMD_ACT_MAC_MULTICAST_ENABLE
;
315 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
316 CMD_ACT_MAC_ALL_MULTICAST_ENABLE
);
318 if (priv
->mac_control
!= old_mac_control
)
319 lbs_set_mac_control(priv
);
321 lbs_deb_leave(LBS_DEB_NET
);
324 void lbs_set_multicast_list(struct net_device
*dev
)
326 struct lbs_private
*priv
= dev
->ml_priv
;
328 schedule_work(&priv
->mcast_work
);
332 * @brief This function handles the major jobs in the LBS driver.
333 * It handles all events generated by firmware, RX data received
334 * from firmware and TX data sent from kernel.
336 * @param data A pointer to lbs_thread structure
339 static int lbs_thread(void *data
)
341 struct net_device
*dev
= data
;
342 struct lbs_private
*priv
= dev
->ml_priv
;
345 lbs_deb_enter(LBS_DEB_THREAD
);
347 init_waitqueue_entry(&wait
, current
);
353 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
354 priv
->currenttxskb
, priv
->dnld_sent
);
356 add_wait_queue(&priv
->waitq
, &wait
);
357 set_current_state(TASK_INTERRUPTIBLE
);
358 spin_lock_irq(&priv
->driver_lock
);
360 if (kthread_should_stop())
361 shouldsleep
= 0; /* Bye */
362 else if (priv
->surpriseremoved
)
363 shouldsleep
= 1; /* We need to wait until we're _told_ to die */
364 else if (priv
->psstate
== PS_STATE_SLEEP
)
365 shouldsleep
= 1; /* Sleep mode. Nothing we can do till it wakes */
366 else if (priv
->cmd_timed_out
)
367 shouldsleep
= 0; /* Command timed out. Recover */
368 else if (!priv
->fw_ready
)
369 shouldsleep
= 1; /* Firmware not ready. We're waiting for it */
370 else if (priv
->dnld_sent
)
371 shouldsleep
= 1; /* Something is en route to the device already */
372 else if (priv
->tx_pending_len
> 0)
373 shouldsleep
= 0; /* We've a packet to send */
374 else if (priv
->resp_len
[priv
->resp_idx
])
375 shouldsleep
= 0; /* We have a command response */
376 else if (priv
->cur_cmd
)
377 shouldsleep
= 1; /* Can't send a command; one already running */
378 else if (!list_empty(&priv
->cmdpendingq
) &&
379 !(priv
->wakeup_dev_required
))
380 shouldsleep
= 0; /* We have a command to send */
381 else if (kfifo_len(&priv
->event_fifo
))
382 shouldsleep
= 0; /* We have an event to process */
384 shouldsleep
= 1; /* No command */
387 lbs_deb_thread("sleeping, connect_status %d, "
388 "psmode %d, psstate %d\n",
389 priv
->connect_status
,
390 priv
->psmode
, priv
->psstate
);
391 spin_unlock_irq(&priv
->driver_lock
);
394 spin_unlock_irq(&priv
->driver_lock
);
396 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
397 priv
->currenttxskb
, priv
->dnld_sent
);
399 set_current_state(TASK_RUNNING
);
400 remove_wait_queue(&priv
->waitq
, &wait
);
402 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
403 priv
->currenttxskb
, priv
->dnld_sent
);
405 if (kthread_should_stop()) {
406 lbs_deb_thread("break from main thread\n");
410 if (priv
->surpriseremoved
) {
411 lbs_deb_thread("adapter removed; waiting to die...\n");
415 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
416 priv
->currenttxskb
, priv
->dnld_sent
);
418 /* Process any pending command response */
419 spin_lock_irq(&priv
->driver_lock
);
420 resp_idx
= priv
->resp_idx
;
421 if (priv
->resp_len
[resp_idx
]) {
422 spin_unlock_irq(&priv
->driver_lock
);
423 lbs_process_command_response(priv
,
424 priv
->resp_buf
[resp_idx
],
425 priv
->resp_len
[resp_idx
]);
426 spin_lock_irq(&priv
->driver_lock
);
427 priv
->resp_len
[resp_idx
] = 0;
429 spin_unlock_irq(&priv
->driver_lock
);
431 /* Process hardware events, e.g. card removed, link lost */
432 spin_lock_irq(&priv
->driver_lock
);
433 while (kfifo_len(&priv
->event_fifo
)) {
436 if (kfifo_out(&priv
->event_fifo
,
437 (unsigned char *) &event
, sizeof(event
)) !=
440 spin_unlock_irq(&priv
->driver_lock
);
441 lbs_process_event(priv
, event
);
442 spin_lock_irq(&priv
->driver_lock
);
444 spin_unlock_irq(&priv
->driver_lock
);
446 if (priv
->wakeup_dev_required
) {
447 lbs_deb_thread("Waking up device...\n");
449 if (priv
->exit_deep_sleep(priv
))
450 lbs_deb_thread("Wakeup device failed\n");
454 /* command timeout stuff */
455 if (priv
->cmd_timed_out
&& priv
->cur_cmd
) {
456 struct cmd_ctrl_node
*cmdnode
= priv
->cur_cmd
;
458 lbs_pr_info("Timeout submitting command 0x%04x\n",
459 le16_to_cpu(cmdnode
->cmdbuf
->command
));
460 lbs_complete_command(priv
, cmdnode
, -ETIMEDOUT
);
461 if (priv
->reset_card
)
462 priv
->reset_card(priv
);
464 priv
->cmd_timed_out
= 0;
469 /* Check if we need to confirm Sleep Request received previously */
470 if (priv
->psstate
== PS_STATE_PRE_SLEEP
&&
471 !priv
->dnld_sent
&& !priv
->cur_cmd
) {
472 if (priv
->connect_status
== LBS_CONNECTED
) {
473 lbs_deb_thread("pre-sleep, currenttxskb %p, "
474 "dnld_sent %d, cur_cmd %p\n",
475 priv
->currenttxskb
, priv
->dnld_sent
,
478 lbs_ps_confirm_sleep(priv
);
480 /* workaround for firmware sending
481 * deauth/linkloss event immediately
482 * after sleep request; remove this
483 * after firmware fixes it
485 priv
->psstate
= PS_STATE_AWAKE
;
486 lbs_pr_alert("ignore PS_SleepConfirm in "
487 "non-connected state\n");
491 /* The PS state is changed during processing of Sleep Request
494 if ((priv
->psstate
== PS_STATE_SLEEP
) ||
495 (priv
->psstate
== PS_STATE_PRE_SLEEP
))
498 if (priv
->is_deep_sleep
)
501 /* Execute the next command */
502 if (!priv
->dnld_sent
&& !priv
->cur_cmd
)
503 lbs_execute_next_command(priv
);
505 spin_lock_irq(&priv
->driver_lock
);
506 if (!priv
->dnld_sent
&& priv
->tx_pending_len
> 0) {
507 int ret
= priv
->hw_host_to_card(priv
, MVMS_DAT
,
508 priv
->tx_pending_buf
,
509 priv
->tx_pending_len
);
511 lbs_deb_tx("host_to_card failed %d\n", ret
);
512 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
514 priv
->tx_pending_len
= 0;
515 if (!priv
->currenttxskb
) {
516 /* We can wake the queues immediately if we aren't
517 waiting for TX feedback */
518 if (priv
->connect_status
== LBS_CONNECTED
)
519 netif_wake_queue(priv
->dev
);
520 if (priv
->mesh_dev
&&
521 lbs_mesh_connected(priv
))
522 netif_wake_queue(priv
->mesh_dev
);
525 spin_unlock_irq(&priv
->driver_lock
);
528 del_timer(&priv
->command_timer
);
529 del_timer(&priv
->auto_deepsleep_timer
);
531 lbs_deb_leave(LBS_DEB_THREAD
);
535 int lbs_suspend(struct lbs_private
*priv
)
539 lbs_deb_enter(LBS_DEB_FW
);
541 if (priv
->is_deep_sleep
) {
542 ret
= lbs_set_deep_sleep(priv
, 0);
544 lbs_pr_err("deep sleep cancellation failed: %d\n", ret
);
547 priv
->deep_sleep_required
= 1;
550 ret
= lbs_set_host_sleep(priv
, 1);
552 netif_device_detach(priv
->dev
);
554 netif_device_detach(priv
->mesh_dev
);
556 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
559 EXPORT_SYMBOL_GPL(lbs_suspend
);
561 int lbs_resume(struct lbs_private
*priv
)
565 lbs_deb_enter(LBS_DEB_FW
);
567 ret
= lbs_set_host_sleep(priv
, 0);
569 netif_device_attach(priv
->dev
);
571 netif_device_attach(priv
->mesh_dev
);
573 if (priv
->deep_sleep_required
) {
574 priv
->deep_sleep_required
= 0;
575 ret
= lbs_set_deep_sleep(priv
, 1);
577 lbs_pr_err("deep sleep activation failed: %d\n", ret
);
580 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
583 EXPORT_SYMBOL_GPL(lbs_resume
);
586 * @brief This function gets the HW spec from the firmware and sets
587 * some basic parameters.
589 * @param priv A pointer to struct lbs_private structure
592 static int lbs_setup_firmware(struct lbs_private
*priv
)
595 s16 curlevel
= 0, minlevel
= 0, maxlevel
= 0;
597 lbs_deb_enter(LBS_DEB_FW
);
599 /* Read MAC address from firmware */
600 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
601 ret
= lbs_update_hw_spec(priv
);
605 /* Read power levels if available */
606 ret
= lbs_get_tx_power(priv
, &curlevel
, &minlevel
, &maxlevel
);
608 priv
->txpower_cur
= curlevel
;
609 priv
->txpower_min
= minlevel
;
610 priv
->txpower_max
= maxlevel
;
613 /* Send cmd to FW to enable 11D function */
614 ret
= lbs_set_snmp_mib(priv
, SNMP_MIB_OID_11D_ENABLE
, 1);
616 lbs_set_mac_control(priv
);
618 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
623 * This function handles the timeout of command sending.
624 * It will re-send the same command again.
626 static void lbs_cmd_timeout_handler(unsigned long data
)
628 struct lbs_private
*priv
= (struct lbs_private
*)data
;
631 lbs_deb_enter(LBS_DEB_CMD
);
632 spin_lock_irqsave(&priv
->driver_lock
, flags
);
637 lbs_pr_info("command 0x%04x timed out\n",
638 le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
));
640 priv
->cmd_timed_out
= 1;
641 wake_up_interruptible(&priv
->waitq
);
643 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
644 lbs_deb_leave(LBS_DEB_CMD
);
648 * This function put the device back to deep sleep mode when timer expires
649 * and no activity (command, event, data etc.) is detected.
651 static void auto_deepsleep_timer_fn(unsigned long data
)
653 struct lbs_private
*priv
= (struct lbs_private
*)data
;
655 lbs_deb_enter(LBS_DEB_CMD
);
657 if (priv
->is_activity_detected
) {
658 priv
->is_activity_detected
= 0;
660 if (priv
->is_auto_deep_sleep_enabled
&&
661 (!priv
->wakeup_dev_required
) &&
662 (priv
->connect_status
!= LBS_CONNECTED
)) {
663 struct cmd_header cmd
;
665 lbs_deb_main("Entering auto deep sleep mode...\n");
666 memset(&cmd
, 0, sizeof(cmd
));
667 cmd
.size
= cpu_to_le16(sizeof(cmd
));
668 lbs_cmd_async(priv
, CMD_802_11_DEEP_SLEEP
, &cmd
,
672 mod_timer(&priv
->auto_deepsleep_timer
, jiffies
+
673 (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
674 lbs_deb_leave(LBS_DEB_CMD
);
677 int lbs_enter_auto_deep_sleep(struct lbs_private
*priv
)
679 lbs_deb_enter(LBS_DEB_SDIO
);
681 priv
->is_auto_deep_sleep_enabled
= 1;
682 if (priv
->is_deep_sleep
)
683 priv
->wakeup_dev_required
= 1;
684 mod_timer(&priv
->auto_deepsleep_timer
,
685 jiffies
+ (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
687 lbs_deb_leave(LBS_DEB_SDIO
);
691 int lbs_exit_auto_deep_sleep(struct lbs_private
*priv
)
693 lbs_deb_enter(LBS_DEB_SDIO
);
695 priv
->is_auto_deep_sleep_enabled
= 0;
696 priv
->auto_deep_sleep_timeout
= 0;
697 del_timer(&priv
->auto_deepsleep_timer
);
699 lbs_deb_leave(LBS_DEB_SDIO
);
703 static int lbs_init_adapter(struct lbs_private
*priv
)
707 lbs_deb_enter(LBS_DEB_MAIN
);
709 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
711 priv
->connect_status
= LBS_DISCONNECTED
;
712 priv
->channel
= DEFAULT_AD_HOC_CHANNEL
;
713 priv
->mac_control
= CMD_ACT_MAC_RX_ON
| CMD_ACT_MAC_TX_ON
;
715 priv
->psmode
= LBS802_11POWERMODECAM
;
716 priv
->psstate
= PS_STATE_FULL_POWER
;
717 priv
->is_deep_sleep
= 0;
718 priv
->is_auto_deep_sleep_enabled
= 0;
719 priv
->deep_sleep_required
= 0;
720 priv
->wakeup_dev_required
= 0;
721 init_waitqueue_head(&priv
->ds_awake_q
);
722 init_waitqueue_head(&priv
->scan_q
);
723 priv
->authtype_auto
= 1;
724 priv
->is_host_sleep_configured
= 0;
725 priv
->is_host_sleep_activated
= 0;
726 init_waitqueue_head(&priv
->host_sleep_q
);
727 mutex_init(&priv
->lock
);
729 setup_timer(&priv
->command_timer
, lbs_cmd_timeout_handler
,
730 (unsigned long)priv
);
731 setup_timer(&priv
->auto_deepsleep_timer
, auto_deepsleep_timer_fn
,
732 (unsigned long)priv
);
734 INIT_LIST_HEAD(&priv
->cmdfreeq
);
735 INIT_LIST_HEAD(&priv
->cmdpendingq
);
737 spin_lock_init(&priv
->driver_lock
);
739 /* Allocate the command buffers */
740 if (lbs_allocate_cmd_buffer(priv
)) {
741 lbs_pr_err("Out of memory allocating command buffers\n");
746 priv
->resp_len
[0] = priv
->resp_len
[1] = 0;
748 /* Create the event FIFO */
749 ret
= kfifo_alloc(&priv
->event_fifo
, sizeof(u32
) * 16, GFP_KERNEL
);
751 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
756 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
761 static void lbs_free_adapter(struct lbs_private
*priv
)
763 lbs_deb_enter(LBS_DEB_MAIN
);
765 lbs_free_cmd_buffer(priv
);
766 kfifo_free(&priv
->event_fifo
);
767 del_timer(&priv
->command_timer
);
768 del_timer(&priv
->auto_deepsleep_timer
);
770 lbs_deb_leave(LBS_DEB_MAIN
);
773 static const struct net_device_ops lbs_netdev_ops
= {
774 .ndo_open
= lbs_dev_open
,
775 .ndo_stop
= lbs_eth_stop
,
776 .ndo_start_xmit
= lbs_hard_start_xmit
,
777 .ndo_set_mac_address
= lbs_set_mac_address
,
778 .ndo_tx_timeout
= lbs_tx_timeout
,
779 .ndo_set_multicast_list
= lbs_set_multicast_list
,
780 .ndo_change_mtu
= eth_change_mtu
,
781 .ndo_validate_addr
= eth_validate_addr
,
785 * @brief This function adds the card. it will probe the
786 * card, allocate the lbs_priv and initialize the device.
788 * @param card A pointer to card
789 * @return A pointer to struct lbs_private structure
791 struct lbs_private
*lbs_add_card(void *card
, struct device
*dmdev
)
793 struct net_device
*dev
;
794 struct wireless_dev
*wdev
;
795 struct lbs_private
*priv
= NULL
;
797 lbs_deb_enter(LBS_DEB_MAIN
);
799 /* Allocate an Ethernet device and register it */
800 wdev
= lbs_cfg_alloc(dmdev
);
802 lbs_pr_err("cfg80211 init failed\n");
806 wdev
->iftype
= NL80211_IFTYPE_STATION
;
807 priv
= wdev_priv(wdev
);
810 if (lbs_init_adapter(priv
)) {
811 lbs_pr_err("failed to initialize adapter structure.\n");
815 dev
= alloc_netdev(0, "wlan%d", ether_setup
);
817 dev_err(dmdev
, "no memory for network device instance\n");
821 dev
->ieee80211_ptr
= wdev
;
823 SET_NETDEV_DEV(dev
, dmdev
);
827 dev
->netdev_ops
= &lbs_netdev_ops
;
828 dev
->watchdog_timeo
= 5 * HZ
;
829 dev
->ethtool_ops
= &lbs_ethtool_ops
;
830 dev
->flags
|= IFF_BROADCAST
| IFF_MULTICAST
;
834 strcpy(dev
->name
, "wlan%d");
836 lbs_deb_thread("Starting main thread...\n");
837 init_waitqueue_head(&priv
->waitq
);
838 priv
->main_thread
= kthread_run(lbs_thread
, dev
, "lbs_main");
839 if (IS_ERR(priv
->main_thread
)) {
840 lbs_deb_thread("Error creating main thread.\n");
844 priv
->work_thread
= create_singlethread_workqueue("lbs_worker");
845 INIT_WORK(&priv
->mcast_work
, lbs_set_mcast_worker
);
847 priv
->wol_criteria
= 0xffffffff;
848 priv
->wol_gpio
= 0xff;
857 lbs_free_adapter(priv
);
865 lbs_deb_leave_args(LBS_DEB_MAIN
, "priv %p", priv
);
868 EXPORT_SYMBOL_GPL(lbs_add_card
);
871 void lbs_remove_card(struct lbs_private
*priv
)
873 struct net_device
*dev
= priv
->dev
;
875 lbs_deb_enter(LBS_DEB_MAIN
);
877 lbs_remove_mesh(priv
);
878 lbs_scan_deinit(priv
);
882 cancel_work_sync(&priv
->mcast_work
);
884 /* worker thread destruction blocks on the in-flight command which
885 * should have been cleared already in lbs_stop_card().
887 lbs_deb_main("destroying worker thread\n");
888 destroy_workqueue(priv
->work_thread
);
889 lbs_deb_main("done destroying worker thread\n");
891 if (priv
->psmode
== LBS802_11POWERMODEMAX_PSP
) {
892 priv
->psmode
= LBS802_11POWERMODECAM
;
893 lbs_set_ps_mode(priv
, PS_MODE_ACTION_EXIT_PS
, true);
896 if (priv
->is_deep_sleep
) {
897 priv
->is_deep_sleep
= 0;
898 wake_up_interruptible(&priv
->ds_awake_q
);
901 priv
->is_host_sleep_configured
= 0;
902 priv
->is_host_sleep_activated
= 0;
903 wake_up_interruptible(&priv
->host_sleep_q
);
905 /* Stop the thread servicing the interrupts */
906 priv
->surpriseremoved
= 1;
907 kthread_stop(priv
->main_thread
);
909 lbs_free_adapter(priv
);
915 lbs_deb_leave(LBS_DEB_MAIN
);
917 EXPORT_SYMBOL_GPL(lbs_remove_card
);
920 int lbs_rtap_supported(struct lbs_private
*priv
)
922 if (MRVL_FW_MAJOR_REV(priv
->fwrelease
) == MRVL_FW_V5
)
925 /* newer firmware use a capability mask */
926 return ((MRVL_FW_MAJOR_REV(priv
->fwrelease
) >= MRVL_FW_V10
) &&
927 (priv
->fwcapinfo
& MESH_CAPINFO_ENABLE_MASK
));
931 int lbs_start_card(struct lbs_private
*priv
)
933 struct net_device
*dev
= priv
->dev
;
936 lbs_deb_enter(LBS_DEB_MAIN
);
938 /* poke the firmware */
939 ret
= lbs_setup_firmware(priv
);
943 if (lbs_cfg_register(priv
)) {
944 lbs_pr_err("cannot register device\n");
948 lbs_update_channel(priv
);
952 lbs_debugfs_init_one(priv
, dev
);
954 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev
->name
);
959 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
962 EXPORT_SYMBOL_GPL(lbs_start_card
);
965 void lbs_stop_card(struct lbs_private
*priv
)
967 struct net_device
*dev
;
968 struct cmd_ctrl_node
*cmdnode
;
971 lbs_deb_enter(LBS_DEB_MAIN
);
977 netif_stop_queue(dev
);
978 netif_carrier_off(dev
);
980 lbs_debugfs_remove_one(priv
);
981 lbs_deinit_mesh(priv
);
983 /* Delete the timeout of the currently processing command */
984 del_timer_sync(&priv
->command_timer
);
985 del_timer_sync(&priv
->auto_deepsleep_timer
);
987 /* Flush pending command nodes */
988 spin_lock_irqsave(&priv
->driver_lock
, flags
);
989 lbs_deb_main("clearing pending commands\n");
990 list_for_each_entry(cmdnode
, &priv
->cmdpendingq
, list
) {
991 cmdnode
->result
= -ENOENT
;
992 cmdnode
->cmdwaitqwoken
= 1;
993 wake_up_interruptible(&cmdnode
->cmdwait_q
);
996 /* Flush the command the card is currently processing */
998 lbs_deb_main("clearing current command\n");
999 priv
->cur_cmd
->result
= -ENOENT
;
1000 priv
->cur_cmd
->cmdwaitqwoken
= 1;
1001 wake_up_interruptible(&priv
->cur_cmd
->cmdwait_q
);
1003 lbs_deb_main("done clearing commands\n");
1004 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1006 unregister_netdev(dev
);
1009 lbs_deb_leave(LBS_DEB_MAIN
);
1011 EXPORT_SYMBOL_GPL(lbs_stop_card
);
1014 void lbs_queue_event(struct lbs_private
*priv
, u32 event
)
1016 unsigned long flags
;
1018 lbs_deb_enter(LBS_DEB_THREAD
);
1019 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1021 if (priv
->psstate
== PS_STATE_SLEEP
)
1022 priv
->psstate
= PS_STATE_AWAKE
;
1024 kfifo_in(&priv
->event_fifo
, (unsigned char *) &event
, sizeof(u32
));
1026 wake_up_interruptible(&priv
->waitq
);
1028 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1029 lbs_deb_leave(LBS_DEB_THREAD
);
1031 EXPORT_SYMBOL_GPL(lbs_queue_event
);
1033 void lbs_notify_command_response(struct lbs_private
*priv
, u8 resp_idx
)
1035 lbs_deb_enter(LBS_DEB_THREAD
);
1037 if (priv
->psstate
== PS_STATE_SLEEP
)
1038 priv
->psstate
= PS_STATE_AWAKE
;
1040 /* Swap buffers by flipping the response index */
1041 BUG_ON(resp_idx
> 1);
1042 priv
->resp_idx
= resp_idx
;
1044 wake_up_interruptible(&priv
->waitq
);
1046 lbs_deb_leave(LBS_DEB_THREAD
);
1048 EXPORT_SYMBOL_GPL(lbs_notify_command_response
);
1050 static int __init
lbs_init_module(void)
1052 lbs_deb_enter(LBS_DEB_MAIN
);
1053 memset(&confirm_sleep
, 0, sizeof(confirm_sleep
));
1054 confirm_sleep
.hdr
.command
= cpu_to_le16(CMD_802_11_PS_MODE
);
1055 confirm_sleep
.hdr
.size
= cpu_to_le16(sizeof(confirm_sleep
));
1056 confirm_sleep
.action
= cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED
);
1058 lbs_deb_leave(LBS_DEB_MAIN
);
1062 static void __exit
lbs_exit_module(void)
1064 lbs_deb_enter(LBS_DEB_MAIN
);
1065 lbs_debugfs_remove();
1066 lbs_deb_leave(LBS_DEB_MAIN
);
1069 module_init(lbs_init_module
);
1070 module_exit(lbs_exit_module
);
1072 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1073 MODULE_AUTHOR("Marvell International Ltd.");
1074 MODULE_LICENSE("GPL");