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
);
161 lbs_deb_leave(LBS_DEB_TX
);
164 void lbs_host_to_card_done(struct lbs_private
*priv
)
168 lbs_deb_enter(LBS_DEB_THREAD
);
170 spin_lock_irqsave(&priv
->driver_lock
, flags
);
172 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
174 /* Wake main thread if commands are pending */
175 if (!priv
->cur_cmd
|| priv
->tx_pending_len
> 0) {
176 if (!priv
->wakeup_dev_required
)
177 wake_up_interruptible(&priv
->waitq
);
180 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
181 lbs_deb_leave(LBS_DEB_THREAD
);
183 EXPORT_SYMBOL_GPL(lbs_host_to_card_done
);
185 int lbs_set_mac_address(struct net_device
*dev
, void *addr
)
188 struct lbs_private
*priv
= dev
->ml_priv
;
189 struct sockaddr
*phwaddr
= addr
;
190 struct cmd_ds_802_11_mac_address cmd
;
192 lbs_deb_enter(LBS_DEB_NET
);
194 /* In case it was called from the mesh device */
197 cmd
.hdr
.size
= cpu_to_le16(sizeof(cmd
));
198 cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
199 memcpy(cmd
.macadd
, phwaddr
->sa_data
, ETH_ALEN
);
201 ret
= lbs_cmd_with_response(priv
, CMD_802_11_MAC_ADDRESS
, &cmd
);
203 lbs_deb_net("set MAC address failed\n");
207 memcpy(priv
->current_addr
, phwaddr
->sa_data
, ETH_ALEN
);
208 memcpy(dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
210 memcpy(priv
->mesh_dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
213 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
218 static inline int mac_in_list(unsigned char *list
, int list_len
,
222 if (!memcmp(list
, mac
, ETH_ALEN
))
231 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr
*cmd
,
232 struct net_device
*dev
, int nr_addrs
)
235 struct netdev_hw_addr
*ha
;
238 if ((dev
->flags
& (IFF_UP
|IFF_MULTICAST
)) != (IFF_UP
|IFF_MULTICAST
))
241 netif_addr_lock_bh(dev
);
242 cnt
= netdev_mc_count(dev
);
243 netdev_for_each_mc_addr(ha
, dev
) {
244 if (mac_in_list(cmd
->maclist
, nr_addrs
, ha
->addr
)) {
245 lbs_deb_net("mcast address %s:%pM skipped\n", dev
->name
,
251 if (i
== MRVDRV_MAX_MULTICAST_LIST_SIZE
)
253 memcpy(&cmd
->maclist
[6*i
], ha
->addr
, ETH_ALEN
);
254 lbs_deb_net("mcast address %s:%pM added to filter\n", dev
->name
,
259 netif_addr_unlock_bh(dev
);
266 static void lbs_set_mcast_worker(struct work_struct
*work
)
268 struct lbs_private
*priv
= container_of(work
, struct lbs_private
, mcast_work
);
269 struct cmd_ds_mac_multicast_adr mcast_cmd
;
272 int old_mac_control
= priv
->mac_control
;
274 lbs_deb_enter(LBS_DEB_NET
);
276 dev_flags
= priv
->dev
->flags
;
278 dev_flags
|= priv
->mesh_dev
->flags
;
280 if (dev_flags
& IFF_PROMISC
) {
281 priv
->mac_control
|= CMD_ACT_MAC_PROMISCUOUS_ENABLE
;
282 priv
->mac_control
&= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE
|
283 CMD_ACT_MAC_MULTICAST_ENABLE
);
284 goto out_set_mac_control
;
285 } else if (dev_flags
& IFF_ALLMULTI
) {
287 priv
->mac_control
|= CMD_ACT_MAC_ALL_MULTICAST_ENABLE
;
288 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
289 CMD_ACT_MAC_MULTICAST_ENABLE
);
290 goto out_set_mac_control
;
293 /* Once for priv->dev, again for priv->mesh_dev if it exists */
294 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->dev
, 0);
295 if (nr_addrs
>= 0 && priv
->mesh_dev
)
296 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->mesh_dev
, nr_addrs
);
301 int size
= offsetof(struct cmd_ds_mac_multicast_adr
,
302 maclist
[6*nr_addrs
]);
304 mcast_cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
305 mcast_cmd
.hdr
.size
= cpu_to_le16(size
);
306 mcast_cmd
.nr_of_adrs
= cpu_to_le16(nr_addrs
);
308 lbs_cmd_async(priv
, CMD_MAC_MULTICAST_ADR
, &mcast_cmd
.hdr
, size
);
310 priv
->mac_control
|= CMD_ACT_MAC_MULTICAST_ENABLE
;
312 priv
->mac_control
&= ~CMD_ACT_MAC_MULTICAST_ENABLE
;
314 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
315 CMD_ACT_MAC_ALL_MULTICAST_ENABLE
);
317 if (priv
->mac_control
!= old_mac_control
)
318 lbs_set_mac_control(priv
);
320 lbs_deb_leave(LBS_DEB_NET
);
323 void lbs_set_multicast_list(struct net_device
*dev
)
325 struct lbs_private
*priv
= dev
->ml_priv
;
327 schedule_work(&priv
->mcast_work
);
331 * @brief This function handles the major jobs in the LBS driver.
332 * It handles all events generated by firmware, RX data received
333 * from firmware and TX data sent from kernel.
335 * @param data A pointer to lbs_thread structure
338 static int lbs_thread(void *data
)
340 struct net_device
*dev
= data
;
341 struct lbs_private
*priv
= dev
->ml_priv
;
344 lbs_deb_enter(LBS_DEB_THREAD
);
346 init_waitqueue_entry(&wait
, current
);
352 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
353 priv
->currenttxskb
, priv
->dnld_sent
);
355 add_wait_queue(&priv
->waitq
, &wait
);
356 set_current_state(TASK_INTERRUPTIBLE
);
357 spin_lock_irq(&priv
->driver_lock
);
359 if (kthread_should_stop())
360 shouldsleep
= 0; /* Bye */
361 else if (priv
->surpriseremoved
)
362 shouldsleep
= 1; /* We need to wait until we're _told_ to die */
363 else if (priv
->psstate
== PS_STATE_SLEEP
)
364 shouldsleep
= 1; /* Sleep mode. Nothing we can do till it wakes */
365 else if (priv
->cmd_timed_out
)
366 shouldsleep
= 0; /* Command timed out. Recover */
367 else if (!priv
->fw_ready
)
368 shouldsleep
= 1; /* Firmware not ready. We're waiting for it */
369 else if (priv
->dnld_sent
)
370 shouldsleep
= 1; /* Something is en route to the device already */
371 else if (priv
->tx_pending_len
> 0)
372 shouldsleep
= 0; /* We've a packet to send */
373 else if (priv
->resp_len
[priv
->resp_idx
])
374 shouldsleep
= 0; /* We have a command response */
375 else if (priv
->cur_cmd
)
376 shouldsleep
= 1; /* Can't send a command; one already running */
377 else if (!list_empty(&priv
->cmdpendingq
) &&
378 !(priv
->wakeup_dev_required
))
379 shouldsleep
= 0; /* We have a command to send */
380 else if (kfifo_len(&priv
->event_fifo
))
381 shouldsleep
= 0; /* We have an event to process */
383 shouldsleep
= 1; /* No command */
386 lbs_deb_thread("sleeping, connect_status %d, "
387 "psmode %d, psstate %d\n",
388 priv
->connect_status
,
389 priv
->psmode
, priv
->psstate
);
390 spin_unlock_irq(&priv
->driver_lock
);
393 spin_unlock_irq(&priv
->driver_lock
);
395 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
396 priv
->currenttxskb
, priv
->dnld_sent
);
398 set_current_state(TASK_RUNNING
);
399 remove_wait_queue(&priv
->waitq
, &wait
);
401 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
402 priv
->currenttxskb
, priv
->dnld_sent
);
404 if (kthread_should_stop()) {
405 lbs_deb_thread("break from main thread\n");
409 if (priv
->surpriseremoved
) {
410 lbs_deb_thread("adapter removed; waiting to die...\n");
414 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
415 priv
->currenttxskb
, priv
->dnld_sent
);
417 /* Process any pending command response */
418 spin_lock_irq(&priv
->driver_lock
);
419 resp_idx
= priv
->resp_idx
;
420 if (priv
->resp_len
[resp_idx
]) {
421 spin_unlock_irq(&priv
->driver_lock
);
422 lbs_process_command_response(priv
,
423 priv
->resp_buf
[resp_idx
],
424 priv
->resp_len
[resp_idx
]);
425 spin_lock_irq(&priv
->driver_lock
);
426 priv
->resp_len
[resp_idx
] = 0;
428 spin_unlock_irq(&priv
->driver_lock
);
430 /* Process hardware events, e.g. card removed, link lost */
431 spin_lock_irq(&priv
->driver_lock
);
432 while (kfifo_len(&priv
->event_fifo
)) {
435 if (kfifo_out(&priv
->event_fifo
,
436 (unsigned char *) &event
, sizeof(event
)) !=
439 spin_unlock_irq(&priv
->driver_lock
);
440 lbs_process_event(priv
, event
);
441 spin_lock_irq(&priv
->driver_lock
);
443 spin_unlock_irq(&priv
->driver_lock
);
445 if (priv
->wakeup_dev_required
) {
446 lbs_deb_thread("Waking up device...\n");
448 if (priv
->exit_deep_sleep(priv
))
449 lbs_deb_thread("Wakeup device failed\n");
453 /* command timeout stuff */
454 if (priv
->cmd_timed_out
&& priv
->cur_cmd
) {
455 struct cmd_ctrl_node
*cmdnode
= priv
->cur_cmd
;
457 lbs_pr_info("Timeout submitting command 0x%04x\n",
458 le16_to_cpu(cmdnode
->cmdbuf
->command
));
459 lbs_complete_command(priv
, cmdnode
, -ETIMEDOUT
);
460 if (priv
->reset_card
)
461 priv
->reset_card(priv
);
463 priv
->cmd_timed_out
= 0;
468 /* Check if we need to confirm Sleep Request received previously */
469 if (priv
->psstate
== PS_STATE_PRE_SLEEP
&&
470 !priv
->dnld_sent
&& !priv
->cur_cmd
) {
471 if (priv
->connect_status
== LBS_CONNECTED
) {
472 lbs_deb_thread("pre-sleep, currenttxskb %p, "
473 "dnld_sent %d, cur_cmd %p\n",
474 priv
->currenttxskb
, priv
->dnld_sent
,
477 lbs_ps_confirm_sleep(priv
);
479 priv
->psstate
= PS_STATE_AWAKE
;
480 lbs_pr_alert("ignore PS_SleepConfirm in "
481 "non-connected state\n");
485 /* The PS state is changed during processing of Sleep Request
488 if ((priv
->psstate
== PS_STATE_SLEEP
) ||
489 (priv
->psstate
== PS_STATE_PRE_SLEEP
))
492 if (priv
->is_deep_sleep
)
495 /* Execute the next command */
496 if (!priv
->dnld_sent
&& !priv
->cur_cmd
)
497 lbs_execute_next_command(priv
);
499 spin_lock_irq(&priv
->driver_lock
);
500 if (!priv
->dnld_sent
&& priv
->tx_pending_len
> 0) {
501 int ret
= priv
->hw_host_to_card(priv
, MVMS_DAT
,
502 priv
->tx_pending_buf
,
503 priv
->tx_pending_len
);
505 lbs_deb_tx("host_to_card failed %d\n", ret
);
506 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
508 priv
->tx_pending_len
= 0;
509 if (!priv
->currenttxskb
) {
510 /* We can wake the queues immediately if we aren't
511 waiting for TX feedback */
512 if (priv
->connect_status
== LBS_CONNECTED
)
513 netif_wake_queue(priv
->dev
);
514 if (priv
->mesh_dev
&&
515 lbs_mesh_connected(priv
))
516 netif_wake_queue(priv
->mesh_dev
);
519 spin_unlock_irq(&priv
->driver_lock
);
522 del_timer(&priv
->command_timer
);
523 del_timer(&priv
->auto_deepsleep_timer
);
525 lbs_deb_leave(LBS_DEB_THREAD
);
529 int lbs_suspend(struct lbs_private
*priv
)
533 lbs_deb_enter(LBS_DEB_FW
);
535 if (priv
->is_deep_sleep
) {
536 ret
= lbs_set_deep_sleep(priv
, 0);
538 lbs_pr_err("deep sleep cancellation failed: %d\n", ret
);
541 priv
->deep_sleep_required
= 1;
544 ret
= lbs_set_host_sleep(priv
, 1);
546 netif_device_detach(priv
->dev
);
548 netif_device_detach(priv
->mesh_dev
);
550 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
553 EXPORT_SYMBOL_GPL(lbs_suspend
);
555 int lbs_resume(struct lbs_private
*priv
)
559 lbs_deb_enter(LBS_DEB_FW
);
561 ret
= lbs_set_host_sleep(priv
, 0);
563 netif_device_attach(priv
->dev
);
565 netif_device_attach(priv
->mesh_dev
);
567 if (priv
->deep_sleep_required
) {
568 priv
->deep_sleep_required
= 0;
569 ret
= lbs_set_deep_sleep(priv
, 1);
571 lbs_pr_err("deep sleep activation failed: %d\n", ret
);
574 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
577 EXPORT_SYMBOL_GPL(lbs_resume
);
580 * @brief This function gets the HW spec from the firmware and sets
581 * some basic parameters.
583 * @param priv A pointer to struct lbs_private structure
586 static int lbs_setup_firmware(struct lbs_private
*priv
)
589 s16 curlevel
= 0, minlevel
= 0, maxlevel
= 0;
591 lbs_deb_enter(LBS_DEB_FW
);
593 /* Read MAC address from firmware */
594 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
595 ret
= lbs_update_hw_spec(priv
);
599 /* Read power levels if available */
600 ret
= lbs_get_tx_power(priv
, &curlevel
, &minlevel
, &maxlevel
);
602 priv
->txpower_cur
= curlevel
;
603 priv
->txpower_min
= minlevel
;
604 priv
->txpower_max
= maxlevel
;
607 /* Send cmd to FW to enable 11D function */
608 ret
= lbs_set_snmp_mib(priv
, SNMP_MIB_OID_11D_ENABLE
, 1);
610 lbs_set_mac_control(priv
);
612 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
617 * This function handles the timeout of command sending.
618 * It will re-send the same command again.
620 static void lbs_cmd_timeout_handler(unsigned long data
)
622 struct lbs_private
*priv
= (struct lbs_private
*)data
;
625 lbs_deb_enter(LBS_DEB_CMD
);
626 spin_lock_irqsave(&priv
->driver_lock
, flags
);
631 lbs_pr_info("command 0x%04x timed out\n",
632 le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
));
634 priv
->cmd_timed_out
= 1;
635 wake_up_interruptible(&priv
->waitq
);
637 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
638 lbs_deb_leave(LBS_DEB_CMD
);
642 * This function put the device back to deep sleep mode when timer expires
643 * and no activity (command, event, data etc.) is detected.
645 static void auto_deepsleep_timer_fn(unsigned long data
)
647 struct lbs_private
*priv
= (struct lbs_private
*)data
;
649 lbs_deb_enter(LBS_DEB_CMD
);
651 if (priv
->is_activity_detected
) {
652 priv
->is_activity_detected
= 0;
654 if (priv
->is_auto_deep_sleep_enabled
&&
655 (!priv
->wakeup_dev_required
) &&
656 (priv
->connect_status
!= LBS_CONNECTED
)) {
657 struct cmd_header cmd
;
659 lbs_deb_main("Entering auto deep sleep mode...\n");
660 memset(&cmd
, 0, sizeof(cmd
));
661 cmd
.size
= cpu_to_le16(sizeof(cmd
));
662 lbs_cmd_async(priv
, CMD_802_11_DEEP_SLEEP
, &cmd
,
666 mod_timer(&priv
->auto_deepsleep_timer
, jiffies
+
667 (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
668 lbs_deb_leave(LBS_DEB_CMD
);
671 int lbs_enter_auto_deep_sleep(struct lbs_private
*priv
)
673 lbs_deb_enter(LBS_DEB_SDIO
);
675 priv
->is_auto_deep_sleep_enabled
= 1;
676 if (priv
->is_deep_sleep
)
677 priv
->wakeup_dev_required
= 1;
678 mod_timer(&priv
->auto_deepsleep_timer
,
679 jiffies
+ (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
681 lbs_deb_leave(LBS_DEB_SDIO
);
685 int lbs_exit_auto_deep_sleep(struct lbs_private
*priv
)
687 lbs_deb_enter(LBS_DEB_SDIO
);
689 priv
->is_auto_deep_sleep_enabled
= 0;
690 priv
->auto_deep_sleep_timeout
= 0;
691 del_timer(&priv
->auto_deepsleep_timer
);
693 lbs_deb_leave(LBS_DEB_SDIO
);
697 static int lbs_init_adapter(struct lbs_private
*priv
)
701 lbs_deb_enter(LBS_DEB_MAIN
);
703 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
705 priv
->connect_status
= LBS_DISCONNECTED
;
706 priv
->channel
= DEFAULT_AD_HOC_CHANNEL
;
707 priv
->mac_control
= CMD_ACT_MAC_RX_ON
| CMD_ACT_MAC_TX_ON
;
709 priv
->psmode
= LBS802_11POWERMODECAM
;
710 priv
->psstate
= PS_STATE_FULL_POWER
;
711 priv
->is_deep_sleep
= 0;
712 priv
->is_auto_deep_sleep_enabled
= 0;
713 priv
->deep_sleep_required
= 0;
714 priv
->wakeup_dev_required
= 0;
715 init_waitqueue_head(&priv
->ds_awake_q
);
716 init_waitqueue_head(&priv
->scan_q
);
717 priv
->authtype_auto
= 1;
718 priv
->is_host_sleep_configured
= 0;
719 priv
->is_host_sleep_activated
= 0;
720 init_waitqueue_head(&priv
->host_sleep_q
);
721 mutex_init(&priv
->lock
);
723 setup_timer(&priv
->command_timer
, lbs_cmd_timeout_handler
,
724 (unsigned long)priv
);
725 setup_timer(&priv
->auto_deepsleep_timer
, auto_deepsleep_timer_fn
,
726 (unsigned long)priv
);
728 INIT_LIST_HEAD(&priv
->cmdfreeq
);
729 INIT_LIST_HEAD(&priv
->cmdpendingq
);
731 spin_lock_init(&priv
->driver_lock
);
733 /* Allocate the command buffers */
734 if (lbs_allocate_cmd_buffer(priv
)) {
735 lbs_pr_err("Out of memory allocating command buffers\n");
740 priv
->resp_len
[0] = priv
->resp_len
[1] = 0;
742 /* Create the event FIFO */
743 ret
= kfifo_alloc(&priv
->event_fifo
, sizeof(u32
) * 16, GFP_KERNEL
);
745 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
750 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
755 static void lbs_free_adapter(struct lbs_private
*priv
)
757 lbs_deb_enter(LBS_DEB_MAIN
);
759 lbs_free_cmd_buffer(priv
);
760 kfifo_free(&priv
->event_fifo
);
761 del_timer(&priv
->command_timer
);
762 del_timer(&priv
->auto_deepsleep_timer
);
764 lbs_deb_leave(LBS_DEB_MAIN
);
767 static const struct net_device_ops lbs_netdev_ops
= {
768 .ndo_open
= lbs_dev_open
,
769 .ndo_stop
= lbs_eth_stop
,
770 .ndo_start_xmit
= lbs_hard_start_xmit
,
771 .ndo_set_mac_address
= lbs_set_mac_address
,
772 .ndo_tx_timeout
= lbs_tx_timeout
,
773 .ndo_set_multicast_list
= lbs_set_multicast_list
,
774 .ndo_change_mtu
= eth_change_mtu
,
775 .ndo_validate_addr
= eth_validate_addr
,
779 * @brief This function adds the card. it will probe the
780 * card, allocate the lbs_priv and initialize the device.
782 * @param card A pointer to card
783 * @return A pointer to struct lbs_private structure
785 struct lbs_private
*lbs_add_card(void *card
, struct device
*dmdev
)
787 struct net_device
*dev
;
788 struct wireless_dev
*wdev
;
789 struct lbs_private
*priv
= NULL
;
791 lbs_deb_enter(LBS_DEB_MAIN
);
793 /* Allocate an Ethernet device and register it */
794 wdev
= lbs_cfg_alloc(dmdev
);
796 lbs_pr_err("cfg80211 init failed\n");
800 wdev
->iftype
= NL80211_IFTYPE_STATION
;
801 priv
= wdev_priv(wdev
);
804 if (lbs_init_adapter(priv
)) {
805 lbs_pr_err("failed to initialize adapter structure.\n");
809 dev
= alloc_netdev(0, "wlan%d", ether_setup
);
811 dev_err(dmdev
, "no memory for network device instance\n");
815 dev
->ieee80211_ptr
= wdev
;
817 SET_NETDEV_DEV(dev
, dmdev
);
821 dev
->netdev_ops
= &lbs_netdev_ops
;
822 dev
->watchdog_timeo
= 5 * HZ
;
823 dev
->ethtool_ops
= &lbs_ethtool_ops
;
824 dev
->flags
|= IFF_BROADCAST
| IFF_MULTICAST
;
828 strcpy(dev
->name
, "wlan%d");
830 lbs_deb_thread("Starting main thread...\n");
831 init_waitqueue_head(&priv
->waitq
);
832 priv
->main_thread
= kthread_run(lbs_thread
, dev
, "lbs_main");
833 if (IS_ERR(priv
->main_thread
)) {
834 lbs_deb_thread("Error creating main thread.\n");
838 priv
->work_thread
= create_singlethread_workqueue("lbs_worker");
839 INIT_WORK(&priv
->mcast_work
, lbs_set_mcast_worker
);
841 priv
->wol_criteria
= 0xffffffff;
842 priv
->wol_gpio
= 0xff;
851 lbs_free_adapter(priv
);
859 lbs_deb_leave_args(LBS_DEB_MAIN
, "priv %p", priv
);
862 EXPORT_SYMBOL_GPL(lbs_add_card
);
865 void lbs_remove_card(struct lbs_private
*priv
)
867 struct net_device
*dev
= priv
->dev
;
869 lbs_deb_enter(LBS_DEB_MAIN
);
871 lbs_remove_mesh(priv
);
872 lbs_scan_deinit(priv
);
876 cancel_work_sync(&priv
->mcast_work
);
878 /* worker thread destruction blocks on the in-flight command which
879 * should have been cleared already in lbs_stop_card().
881 lbs_deb_main("destroying worker thread\n");
882 destroy_workqueue(priv
->work_thread
);
883 lbs_deb_main("done destroying worker thread\n");
885 if (priv
->psmode
== LBS802_11POWERMODEMAX_PSP
) {
886 priv
->psmode
= LBS802_11POWERMODECAM
;
887 lbs_set_ps_mode(priv
, PS_MODE_ACTION_EXIT_PS
, true);
890 if (priv
->is_deep_sleep
) {
891 priv
->is_deep_sleep
= 0;
892 wake_up_interruptible(&priv
->ds_awake_q
);
895 priv
->is_host_sleep_configured
= 0;
896 priv
->is_host_sleep_activated
= 0;
897 wake_up_interruptible(&priv
->host_sleep_q
);
899 /* Stop the thread servicing the interrupts */
900 priv
->surpriseremoved
= 1;
901 kthread_stop(priv
->main_thread
);
903 lbs_free_adapter(priv
);
909 lbs_deb_leave(LBS_DEB_MAIN
);
911 EXPORT_SYMBOL_GPL(lbs_remove_card
);
914 int lbs_rtap_supported(struct lbs_private
*priv
)
916 if (MRVL_FW_MAJOR_REV(priv
->fwrelease
) == MRVL_FW_V5
)
919 /* newer firmware use a capability mask */
920 return ((MRVL_FW_MAJOR_REV(priv
->fwrelease
) >= MRVL_FW_V10
) &&
921 (priv
->fwcapinfo
& MESH_CAPINFO_ENABLE_MASK
));
925 int lbs_start_card(struct lbs_private
*priv
)
927 struct net_device
*dev
= priv
->dev
;
930 lbs_deb_enter(LBS_DEB_MAIN
);
932 /* poke the firmware */
933 ret
= lbs_setup_firmware(priv
);
937 if (lbs_cfg_register(priv
)) {
938 lbs_pr_err("cannot register device\n");
942 lbs_update_channel(priv
);
946 lbs_debugfs_init_one(priv
, dev
);
948 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev
->name
);
953 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
956 EXPORT_SYMBOL_GPL(lbs_start_card
);
959 void lbs_stop_card(struct lbs_private
*priv
)
961 struct net_device
*dev
;
962 struct cmd_ctrl_node
*cmdnode
;
965 lbs_deb_enter(LBS_DEB_MAIN
);
971 netif_stop_queue(dev
);
972 netif_carrier_off(dev
);
974 lbs_debugfs_remove_one(priv
);
975 lbs_deinit_mesh(priv
);
977 /* Delete the timeout of the currently processing command */
978 del_timer_sync(&priv
->command_timer
);
979 del_timer_sync(&priv
->auto_deepsleep_timer
);
981 /* Flush pending command nodes */
982 spin_lock_irqsave(&priv
->driver_lock
, flags
);
983 lbs_deb_main("clearing pending commands\n");
984 list_for_each_entry(cmdnode
, &priv
->cmdpendingq
, list
) {
985 cmdnode
->result
= -ENOENT
;
986 cmdnode
->cmdwaitqwoken
= 1;
987 wake_up_interruptible(&cmdnode
->cmdwait_q
);
990 /* Flush the command the card is currently processing */
992 lbs_deb_main("clearing current command\n");
993 priv
->cur_cmd
->result
= -ENOENT
;
994 priv
->cur_cmd
->cmdwaitqwoken
= 1;
995 wake_up_interruptible(&priv
->cur_cmd
->cmdwait_q
);
997 lbs_deb_main("done clearing commands\n");
998 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1000 unregister_netdev(dev
);
1003 lbs_deb_leave(LBS_DEB_MAIN
);
1005 EXPORT_SYMBOL_GPL(lbs_stop_card
);
1008 void lbs_queue_event(struct lbs_private
*priv
, u32 event
)
1010 unsigned long flags
;
1012 lbs_deb_enter(LBS_DEB_THREAD
);
1013 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1015 if (priv
->psstate
== PS_STATE_SLEEP
)
1016 priv
->psstate
= PS_STATE_AWAKE
;
1018 kfifo_in(&priv
->event_fifo
, (unsigned char *) &event
, sizeof(u32
));
1020 wake_up_interruptible(&priv
->waitq
);
1022 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1023 lbs_deb_leave(LBS_DEB_THREAD
);
1025 EXPORT_SYMBOL_GPL(lbs_queue_event
);
1027 void lbs_notify_command_response(struct lbs_private
*priv
, u8 resp_idx
)
1029 lbs_deb_enter(LBS_DEB_THREAD
);
1031 if (priv
->psstate
== PS_STATE_SLEEP
)
1032 priv
->psstate
= PS_STATE_AWAKE
;
1034 /* Swap buffers by flipping the response index */
1035 BUG_ON(resp_idx
> 1);
1036 priv
->resp_idx
= resp_idx
;
1038 wake_up_interruptible(&priv
->waitq
);
1040 lbs_deb_leave(LBS_DEB_THREAD
);
1042 EXPORT_SYMBOL_GPL(lbs_notify_command_response
);
1044 static int __init
lbs_init_module(void)
1046 lbs_deb_enter(LBS_DEB_MAIN
);
1047 memset(&confirm_sleep
, 0, sizeof(confirm_sleep
));
1048 confirm_sleep
.hdr
.command
= cpu_to_le16(CMD_802_11_PS_MODE
);
1049 confirm_sleep
.hdr
.size
= cpu_to_le16(sizeof(confirm_sleep
));
1050 confirm_sleep
.action
= cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED
);
1052 lbs_deb_leave(LBS_DEB_MAIN
);
1056 static void __exit
lbs_exit_module(void)
1058 lbs_deb_enter(LBS_DEB_MAIN
);
1059 lbs_debugfs_remove();
1060 lbs_deb_leave(LBS_DEB_MAIN
);
1063 module_init(lbs_init_module
);
1064 module_exit(lbs_exit_module
);
1066 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1067 MODULE_AUTHOR("Marvell International Ltd.");
1068 MODULE_LICENSE("GPL");