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 /* Wake-up command waiters which can't sleep in
506 * lbs_prepare_and_send_command
508 if (!list_empty(&priv
->cmdpendingq
))
509 wake_up_all(&priv
->cmd_pending
);
511 spin_lock_irq(&priv
->driver_lock
);
512 if (!priv
->dnld_sent
&& priv
->tx_pending_len
> 0) {
513 int ret
= priv
->hw_host_to_card(priv
, MVMS_DAT
,
514 priv
->tx_pending_buf
,
515 priv
->tx_pending_len
);
517 lbs_deb_tx("host_to_card failed %d\n", ret
);
518 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
520 priv
->tx_pending_len
= 0;
521 if (!priv
->currenttxskb
) {
522 /* We can wake the queues immediately if we aren't
523 waiting for TX feedback */
524 if (priv
->connect_status
== LBS_CONNECTED
)
525 netif_wake_queue(priv
->dev
);
526 if (priv
->mesh_dev
&&
527 lbs_mesh_connected(priv
))
528 netif_wake_queue(priv
->mesh_dev
);
531 spin_unlock_irq(&priv
->driver_lock
);
534 del_timer(&priv
->command_timer
);
535 del_timer(&priv
->auto_deepsleep_timer
);
536 wake_up_all(&priv
->cmd_pending
);
538 lbs_deb_leave(LBS_DEB_THREAD
);
542 int lbs_suspend(struct lbs_private
*priv
)
546 lbs_deb_enter(LBS_DEB_FW
);
548 if (priv
->is_deep_sleep
) {
549 ret
= lbs_set_deep_sleep(priv
, 0);
551 lbs_pr_err("deep sleep cancellation failed: %d\n", ret
);
554 priv
->deep_sleep_required
= 1;
557 ret
= lbs_set_host_sleep(priv
, 1);
559 netif_device_detach(priv
->dev
);
561 netif_device_detach(priv
->mesh_dev
);
563 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
566 EXPORT_SYMBOL_GPL(lbs_suspend
);
568 int lbs_resume(struct lbs_private
*priv
)
572 lbs_deb_enter(LBS_DEB_FW
);
574 ret
= lbs_set_host_sleep(priv
, 0);
576 netif_device_attach(priv
->dev
);
578 netif_device_attach(priv
->mesh_dev
);
580 if (priv
->deep_sleep_required
) {
581 priv
->deep_sleep_required
= 0;
582 ret
= lbs_set_deep_sleep(priv
, 1);
584 lbs_pr_err("deep sleep activation failed: %d\n", ret
);
587 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
590 EXPORT_SYMBOL_GPL(lbs_resume
);
593 * @brief This function gets the HW spec from the firmware and sets
594 * some basic parameters.
596 * @param priv A pointer to struct lbs_private structure
599 static int lbs_setup_firmware(struct lbs_private
*priv
)
602 s16 curlevel
= 0, minlevel
= 0, maxlevel
= 0;
604 lbs_deb_enter(LBS_DEB_FW
);
606 /* Read MAC address from firmware */
607 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
608 ret
= lbs_update_hw_spec(priv
);
612 /* Read power levels if available */
613 ret
= lbs_get_tx_power(priv
, &curlevel
, &minlevel
, &maxlevel
);
615 priv
->txpower_cur
= curlevel
;
616 priv
->txpower_min
= minlevel
;
617 priv
->txpower_max
= maxlevel
;
620 /* Send cmd to FW to enable 11D function */
621 ret
= lbs_set_snmp_mib(priv
, SNMP_MIB_OID_11D_ENABLE
, 1);
623 lbs_set_mac_control(priv
);
625 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
630 * This function handles the timeout of command sending.
631 * It will re-send the same command again.
633 static void lbs_cmd_timeout_handler(unsigned long data
)
635 struct lbs_private
*priv
= (struct lbs_private
*)data
;
638 lbs_deb_enter(LBS_DEB_CMD
);
639 spin_lock_irqsave(&priv
->driver_lock
, flags
);
644 lbs_pr_info("command 0x%04x timed out\n",
645 le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
));
647 priv
->cmd_timed_out
= 1;
648 wake_up_interruptible(&priv
->waitq
);
650 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
651 lbs_deb_leave(LBS_DEB_CMD
);
655 * This function put the device back to deep sleep mode when timer expires
656 * and no activity (command, event, data etc.) is detected.
658 static void auto_deepsleep_timer_fn(unsigned long data
)
660 struct lbs_private
*priv
= (struct lbs_private
*)data
;
663 lbs_deb_enter(LBS_DEB_CMD
);
665 if (priv
->is_activity_detected
) {
666 priv
->is_activity_detected
= 0;
668 if (priv
->is_auto_deep_sleep_enabled
&&
669 (!priv
->wakeup_dev_required
) &&
670 (priv
->connect_status
!= LBS_CONNECTED
)) {
671 lbs_deb_main("Entering auto deep sleep mode...\n");
672 ret
= lbs_prepare_and_send_command(priv
,
673 CMD_802_11_DEEP_SLEEP
, 0,
676 lbs_pr_err("Enter Deep Sleep command failed\n");
679 mod_timer(&priv
->auto_deepsleep_timer
, jiffies
+
680 (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
681 lbs_deb_leave(LBS_DEB_CMD
);
684 int lbs_enter_auto_deep_sleep(struct lbs_private
*priv
)
686 lbs_deb_enter(LBS_DEB_SDIO
);
688 priv
->is_auto_deep_sleep_enabled
= 1;
689 if (priv
->is_deep_sleep
)
690 priv
->wakeup_dev_required
= 1;
691 mod_timer(&priv
->auto_deepsleep_timer
,
692 jiffies
+ (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
694 lbs_deb_leave(LBS_DEB_SDIO
);
698 int lbs_exit_auto_deep_sleep(struct lbs_private
*priv
)
700 lbs_deb_enter(LBS_DEB_SDIO
);
702 priv
->is_auto_deep_sleep_enabled
= 0;
703 priv
->auto_deep_sleep_timeout
= 0;
704 del_timer(&priv
->auto_deepsleep_timer
);
706 lbs_deb_leave(LBS_DEB_SDIO
);
710 static int lbs_init_adapter(struct lbs_private
*priv
)
714 lbs_deb_enter(LBS_DEB_MAIN
);
716 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
718 priv
->connect_status
= LBS_DISCONNECTED
;
719 priv
->channel
= DEFAULT_AD_HOC_CHANNEL
;
720 priv
->mac_control
= CMD_ACT_MAC_RX_ON
| CMD_ACT_MAC_TX_ON
;
722 priv
->psmode
= LBS802_11POWERMODECAM
;
723 priv
->psstate
= PS_STATE_FULL_POWER
;
724 priv
->is_deep_sleep
= 0;
725 priv
->is_auto_deep_sleep_enabled
= 0;
726 priv
->deep_sleep_required
= 0;
727 priv
->wakeup_dev_required
= 0;
728 init_waitqueue_head(&priv
->ds_awake_q
);
729 priv
->authtype_auto
= 1;
730 priv
->is_host_sleep_configured
= 0;
731 priv
->is_host_sleep_activated
= 0;
732 init_waitqueue_head(&priv
->host_sleep_q
);
733 mutex_init(&priv
->lock
);
735 setup_timer(&priv
->command_timer
, lbs_cmd_timeout_handler
,
736 (unsigned long)priv
);
737 setup_timer(&priv
->auto_deepsleep_timer
, auto_deepsleep_timer_fn
,
738 (unsigned long)priv
);
740 INIT_LIST_HEAD(&priv
->cmdfreeq
);
741 INIT_LIST_HEAD(&priv
->cmdpendingq
);
743 spin_lock_init(&priv
->driver_lock
);
744 init_waitqueue_head(&priv
->cmd_pending
);
746 /* Allocate the command buffers */
747 if (lbs_allocate_cmd_buffer(priv
)) {
748 lbs_pr_err("Out of memory allocating command buffers\n");
753 priv
->resp_len
[0] = priv
->resp_len
[1] = 0;
755 /* Create the event FIFO */
756 ret
= kfifo_alloc(&priv
->event_fifo
, sizeof(u32
) * 16, GFP_KERNEL
);
758 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
763 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
768 static void lbs_free_adapter(struct lbs_private
*priv
)
770 lbs_deb_enter(LBS_DEB_MAIN
);
772 lbs_free_cmd_buffer(priv
);
773 kfifo_free(&priv
->event_fifo
);
774 del_timer(&priv
->command_timer
);
775 del_timer(&priv
->auto_deepsleep_timer
);
777 lbs_deb_leave(LBS_DEB_MAIN
);
780 static const struct net_device_ops lbs_netdev_ops
= {
781 .ndo_open
= lbs_dev_open
,
782 .ndo_stop
= lbs_eth_stop
,
783 .ndo_start_xmit
= lbs_hard_start_xmit
,
784 .ndo_set_mac_address
= lbs_set_mac_address
,
785 .ndo_tx_timeout
= lbs_tx_timeout
,
786 .ndo_set_multicast_list
= lbs_set_multicast_list
,
787 .ndo_change_mtu
= eth_change_mtu
,
788 .ndo_validate_addr
= eth_validate_addr
,
792 * @brief This function adds the card. it will probe the
793 * card, allocate the lbs_priv and initialize the device.
795 * @param card A pointer to card
796 * @return A pointer to struct lbs_private structure
798 struct lbs_private
*lbs_add_card(void *card
, struct device
*dmdev
)
800 struct net_device
*dev
;
801 struct wireless_dev
*wdev
;
802 struct lbs_private
*priv
= NULL
;
804 lbs_deb_enter(LBS_DEB_MAIN
);
806 /* Allocate an Ethernet device and register it */
807 wdev
= lbs_cfg_alloc(dmdev
);
809 lbs_pr_err("cfg80211 init failed\n");
813 wdev
->iftype
= NL80211_IFTYPE_STATION
;
814 priv
= wdev_priv(wdev
);
817 if (lbs_init_adapter(priv
)) {
818 lbs_pr_err("failed to initialize adapter structure.\n");
822 dev
= alloc_netdev(0, "wlan%d", ether_setup
);
824 dev_err(dmdev
, "no memory for network device instance\n");
828 dev
->ieee80211_ptr
= wdev
;
830 SET_NETDEV_DEV(dev
, dmdev
);
834 dev
->netdev_ops
= &lbs_netdev_ops
;
835 dev
->watchdog_timeo
= 5 * HZ
;
836 dev
->ethtool_ops
= &lbs_ethtool_ops
;
837 dev
->flags
|= IFF_BROADCAST
| IFF_MULTICAST
;
841 strcpy(dev
->name
, "wlan%d");
843 lbs_deb_thread("Starting main thread...\n");
844 init_waitqueue_head(&priv
->waitq
);
845 priv
->main_thread
= kthread_run(lbs_thread
, dev
, "lbs_main");
846 if (IS_ERR(priv
->main_thread
)) {
847 lbs_deb_thread("Error creating main thread.\n");
851 priv
->work_thread
= create_singlethread_workqueue("lbs_worker");
852 INIT_WORK(&priv
->mcast_work
, lbs_set_mcast_worker
);
854 priv
->wol_criteria
= 0xffffffff;
855 priv
->wol_gpio
= 0xff;
864 lbs_free_adapter(priv
);
872 lbs_deb_leave_args(LBS_DEB_MAIN
, "priv %p", priv
);
875 EXPORT_SYMBOL_GPL(lbs_add_card
);
878 void lbs_remove_card(struct lbs_private
*priv
)
880 struct net_device
*dev
= priv
->dev
;
882 lbs_deb_enter(LBS_DEB_MAIN
);
884 lbs_remove_mesh(priv
);
885 lbs_scan_deinit(priv
);
889 cancel_work_sync(&priv
->mcast_work
);
891 /* worker thread destruction blocks on the in-flight command which
892 * should have been cleared already in lbs_stop_card().
894 lbs_deb_main("destroying worker thread\n");
895 destroy_workqueue(priv
->work_thread
);
896 lbs_deb_main("done destroying worker thread\n");
898 if (priv
->psmode
== LBS802_11POWERMODEMAX_PSP
) {
899 priv
->psmode
= LBS802_11POWERMODECAM
;
900 lbs_ps_wakeup(priv
, CMD_OPTION_WAITFORRSP
);
903 if (priv
->is_deep_sleep
) {
904 priv
->is_deep_sleep
= 0;
905 wake_up_interruptible(&priv
->ds_awake_q
);
908 priv
->is_host_sleep_configured
= 0;
909 priv
->is_host_sleep_activated
= 0;
910 wake_up_interruptible(&priv
->host_sleep_q
);
912 /* Stop the thread servicing the interrupts */
913 priv
->surpriseremoved
= 1;
914 kthread_stop(priv
->main_thread
);
916 lbs_free_adapter(priv
);
922 lbs_deb_leave(LBS_DEB_MAIN
);
924 EXPORT_SYMBOL_GPL(lbs_remove_card
);
927 int lbs_rtap_supported(struct lbs_private
*priv
)
929 if (MRVL_FW_MAJOR_REV(priv
->fwrelease
) == MRVL_FW_V5
)
932 /* newer firmware use a capability mask */
933 return ((MRVL_FW_MAJOR_REV(priv
->fwrelease
) >= MRVL_FW_V10
) &&
934 (priv
->fwcapinfo
& MESH_CAPINFO_ENABLE_MASK
));
938 int lbs_start_card(struct lbs_private
*priv
)
940 struct net_device
*dev
= priv
->dev
;
943 lbs_deb_enter(LBS_DEB_MAIN
);
945 /* poke the firmware */
946 ret
= lbs_setup_firmware(priv
);
950 if (lbs_cfg_register(priv
)) {
951 lbs_pr_err("cannot register device\n");
955 lbs_update_channel(priv
);
959 lbs_debugfs_init_one(priv
, dev
);
961 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev
->name
);
966 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
969 EXPORT_SYMBOL_GPL(lbs_start_card
);
972 void lbs_stop_card(struct lbs_private
*priv
)
974 struct net_device
*dev
;
975 struct cmd_ctrl_node
*cmdnode
;
978 lbs_deb_enter(LBS_DEB_MAIN
);
984 netif_stop_queue(dev
);
985 netif_carrier_off(dev
);
987 lbs_debugfs_remove_one(priv
);
988 lbs_deinit_mesh(priv
);
990 /* Delete the timeout of the currently processing command */
991 del_timer_sync(&priv
->command_timer
);
992 del_timer_sync(&priv
->auto_deepsleep_timer
);
994 /* Flush pending command nodes */
995 spin_lock_irqsave(&priv
->driver_lock
, flags
);
996 lbs_deb_main("clearing pending commands\n");
997 list_for_each_entry(cmdnode
, &priv
->cmdpendingq
, list
) {
998 cmdnode
->result
= -ENOENT
;
999 cmdnode
->cmdwaitqwoken
= 1;
1000 wake_up_interruptible(&cmdnode
->cmdwait_q
);
1003 /* Flush the command the card is currently processing */
1004 if (priv
->cur_cmd
) {
1005 lbs_deb_main("clearing current command\n");
1006 priv
->cur_cmd
->result
= -ENOENT
;
1007 priv
->cur_cmd
->cmdwaitqwoken
= 1;
1008 wake_up_interruptible(&priv
->cur_cmd
->cmdwait_q
);
1010 lbs_deb_main("done clearing commands\n");
1011 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1013 unregister_netdev(dev
);
1016 lbs_deb_leave(LBS_DEB_MAIN
);
1018 EXPORT_SYMBOL_GPL(lbs_stop_card
);
1021 void lbs_queue_event(struct lbs_private
*priv
, u32 event
)
1023 unsigned long flags
;
1025 lbs_deb_enter(LBS_DEB_THREAD
);
1026 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1028 if (priv
->psstate
== PS_STATE_SLEEP
)
1029 priv
->psstate
= PS_STATE_AWAKE
;
1031 kfifo_in(&priv
->event_fifo
, (unsigned char *) &event
, sizeof(u32
));
1033 wake_up_interruptible(&priv
->waitq
);
1035 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1036 lbs_deb_leave(LBS_DEB_THREAD
);
1038 EXPORT_SYMBOL_GPL(lbs_queue_event
);
1040 void lbs_notify_command_response(struct lbs_private
*priv
, u8 resp_idx
)
1042 lbs_deb_enter(LBS_DEB_THREAD
);
1044 if (priv
->psstate
== PS_STATE_SLEEP
)
1045 priv
->psstate
= PS_STATE_AWAKE
;
1047 /* Swap buffers by flipping the response index */
1048 BUG_ON(resp_idx
> 1);
1049 priv
->resp_idx
= resp_idx
;
1051 wake_up_interruptible(&priv
->waitq
);
1053 lbs_deb_leave(LBS_DEB_THREAD
);
1055 EXPORT_SYMBOL_GPL(lbs_notify_command_response
);
1057 static int __init
lbs_init_module(void)
1059 lbs_deb_enter(LBS_DEB_MAIN
);
1060 memset(&confirm_sleep
, 0, sizeof(confirm_sleep
));
1061 confirm_sleep
.hdr
.command
= cpu_to_le16(CMD_802_11_PS_MODE
);
1062 confirm_sleep
.hdr
.size
= cpu_to_le16(sizeof(confirm_sleep
));
1063 confirm_sleep
.action
= cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED
);
1065 lbs_deb_leave(LBS_DEB_MAIN
);
1069 static void __exit
lbs_exit_module(void)
1071 lbs_deb_enter(LBS_DEB_MAIN
);
1072 lbs_debugfs_remove();
1073 lbs_deb_leave(LBS_DEB_MAIN
);
1076 module_init(lbs_init_module
);
1077 module_exit(lbs_exit_module
);
1079 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1080 MODULE_AUTHOR("Marvell International Ltd.");
1081 MODULE_LICENSE("GPL");