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);
39 * This global structure is used to send the confirm_sleep command as
40 * fast as possible down to the firmware.
42 struct cmd_confirm_sleep confirm_sleep
;
46 * the table to keep region code
48 u16 lbs_region_code_to_index
[MRVDRV_MAX_REGION_CODE
] =
49 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
52 * FW rate table. FW refers to rates by their index in this table, not by the
53 * rate value itself. Values of 0x00 are
56 static u8 fw_data_rates
[MAX_RATES
] =
57 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
58 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
62 * lbs_fw_index_to_data_rate - use index to get the data rate
64 * @idx: The index of data rate
65 * returns: data rate or 0
67 u32
lbs_fw_index_to_data_rate(u8 idx
)
69 if (idx
>= sizeof(fw_data_rates
))
71 return fw_data_rates
[idx
];
75 * lbs_data_rate_to_fw_index - use rate to get the index
80 u8
lbs_data_rate_to_fw_index(u32 rate
)
87 for (i
= 0; i
< sizeof(fw_data_rates
); i
++) {
88 if (rate
== fw_data_rates
[i
])
96 * lbs_dev_open - open the ethX interface
98 * @dev: A pointer to &net_device structure
99 * returns: 0 or -EBUSY if monitor mode active
101 static int lbs_dev_open(struct net_device
*dev
)
103 struct lbs_private
*priv
= dev
->ml_priv
;
106 lbs_deb_enter(LBS_DEB_NET
);
108 spin_lock_irq(&priv
->driver_lock
);
109 priv
->stopping
= false;
111 if (priv
->connect_status
== LBS_CONNECTED
)
112 netif_carrier_on(dev
);
114 netif_carrier_off(dev
);
116 if (!priv
->tx_pending_len
)
117 netif_wake_queue(dev
);
119 spin_unlock_irq(&priv
->driver_lock
);
120 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
125 * lbs_eth_stop - close the ethX interface
127 * @dev: A pointer to &net_device structure
130 static int lbs_eth_stop(struct net_device
*dev
)
132 struct lbs_private
*priv
= dev
->ml_priv
;
134 lbs_deb_enter(LBS_DEB_NET
);
136 spin_lock_irq(&priv
->driver_lock
);
137 priv
->stopping
= true;
138 netif_stop_queue(dev
);
139 spin_unlock_irq(&priv
->driver_lock
);
141 schedule_work(&priv
->mcast_work
);
142 cancel_delayed_work_sync(&priv
->scan_work
);
143 if (priv
->scan_req
) {
144 cfg80211_scan_done(priv
->scan_req
, false);
145 priv
->scan_req
= NULL
;
148 lbs_deb_leave(LBS_DEB_NET
);
152 void lbs_host_to_card_done(struct lbs_private
*priv
)
156 lbs_deb_enter(LBS_DEB_THREAD
);
158 spin_lock_irqsave(&priv
->driver_lock
, flags
);
160 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
162 /* Wake main thread if commands are pending */
163 if (!priv
->cur_cmd
|| priv
->tx_pending_len
> 0) {
164 if (!priv
->wakeup_dev_required
)
165 wake_up_interruptible(&priv
->waitq
);
168 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
169 lbs_deb_leave(LBS_DEB_THREAD
);
171 EXPORT_SYMBOL_GPL(lbs_host_to_card_done
);
173 int lbs_set_mac_address(struct net_device
*dev
, void *addr
)
176 struct lbs_private
*priv
= dev
->ml_priv
;
177 struct sockaddr
*phwaddr
= addr
;
178 struct cmd_ds_802_11_mac_address cmd
;
180 lbs_deb_enter(LBS_DEB_NET
);
182 /* In case it was called from the mesh device */
185 cmd
.hdr
.size
= cpu_to_le16(sizeof(cmd
));
186 cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
187 memcpy(cmd
.macadd
, phwaddr
->sa_data
, ETH_ALEN
);
189 ret
= lbs_cmd_with_response(priv
, CMD_802_11_MAC_ADDRESS
, &cmd
);
191 lbs_deb_net("set MAC address failed\n");
195 memcpy(priv
->current_addr
, phwaddr
->sa_data
, ETH_ALEN
);
196 memcpy(dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
198 memcpy(priv
->mesh_dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
201 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
206 static inline int mac_in_list(unsigned char *list
, int list_len
,
210 if (!memcmp(list
, mac
, ETH_ALEN
))
219 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr
*cmd
,
220 struct net_device
*dev
, int nr_addrs
)
223 struct netdev_hw_addr
*ha
;
226 if ((dev
->flags
& (IFF_UP
|IFF_MULTICAST
)) != (IFF_UP
|IFF_MULTICAST
))
229 netif_addr_lock_bh(dev
);
230 cnt
= netdev_mc_count(dev
);
231 netdev_for_each_mc_addr(ha
, dev
) {
232 if (mac_in_list(cmd
->maclist
, nr_addrs
, ha
->addr
)) {
233 lbs_deb_net("mcast address %s:%pM skipped\n", dev
->name
,
239 if (i
== MRVDRV_MAX_MULTICAST_LIST_SIZE
)
241 memcpy(&cmd
->maclist
[6*i
], ha
->addr
, ETH_ALEN
);
242 lbs_deb_net("mcast address %s:%pM added to filter\n", dev
->name
,
247 netif_addr_unlock_bh(dev
);
254 static void lbs_set_mcast_worker(struct work_struct
*work
)
256 struct lbs_private
*priv
= container_of(work
, struct lbs_private
, mcast_work
);
257 struct cmd_ds_mac_multicast_adr mcast_cmd
;
260 int old_mac_control
= priv
->mac_control
;
262 lbs_deb_enter(LBS_DEB_NET
);
264 dev_flags
= priv
->dev
->flags
;
266 dev_flags
|= priv
->mesh_dev
->flags
;
268 if (dev_flags
& IFF_PROMISC
) {
269 priv
->mac_control
|= CMD_ACT_MAC_PROMISCUOUS_ENABLE
;
270 priv
->mac_control
&= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE
|
271 CMD_ACT_MAC_MULTICAST_ENABLE
);
272 goto out_set_mac_control
;
273 } else if (dev_flags
& IFF_ALLMULTI
) {
275 priv
->mac_control
|= CMD_ACT_MAC_ALL_MULTICAST_ENABLE
;
276 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
277 CMD_ACT_MAC_MULTICAST_ENABLE
);
278 goto out_set_mac_control
;
281 /* Once for priv->dev, again for priv->mesh_dev if it exists */
282 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->dev
, 0);
283 if (nr_addrs
>= 0 && priv
->mesh_dev
)
284 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->mesh_dev
, nr_addrs
);
289 int size
= offsetof(struct cmd_ds_mac_multicast_adr
,
290 maclist
[6*nr_addrs
]);
292 mcast_cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
293 mcast_cmd
.hdr
.size
= cpu_to_le16(size
);
294 mcast_cmd
.nr_of_adrs
= cpu_to_le16(nr_addrs
);
296 lbs_cmd_async(priv
, CMD_MAC_MULTICAST_ADR
, &mcast_cmd
.hdr
, size
);
298 priv
->mac_control
|= CMD_ACT_MAC_MULTICAST_ENABLE
;
300 priv
->mac_control
&= ~CMD_ACT_MAC_MULTICAST_ENABLE
;
302 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
303 CMD_ACT_MAC_ALL_MULTICAST_ENABLE
);
305 if (priv
->mac_control
!= old_mac_control
)
306 lbs_set_mac_control(priv
);
308 lbs_deb_leave(LBS_DEB_NET
);
311 void lbs_set_multicast_list(struct net_device
*dev
)
313 struct lbs_private
*priv
= dev
->ml_priv
;
315 schedule_work(&priv
->mcast_work
);
319 * lbs_thread - handles the major jobs in the LBS driver.
320 * It handles all events generated by firmware, RX data received
321 * from firmware and TX data sent from kernel.
323 * @data: A pointer to &lbs_thread structure
326 static int lbs_thread(void *data
)
328 struct net_device
*dev
= data
;
329 struct lbs_private
*priv
= dev
->ml_priv
;
332 lbs_deb_enter(LBS_DEB_THREAD
);
334 init_waitqueue_entry(&wait
, current
);
340 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
341 priv
->currenttxskb
, priv
->dnld_sent
);
343 add_wait_queue(&priv
->waitq
, &wait
);
344 set_current_state(TASK_INTERRUPTIBLE
);
345 spin_lock_irq(&priv
->driver_lock
);
347 if (kthread_should_stop())
348 shouldsleep
= 0; /* Bye */
349 else if (priv
->surpriseremoved
)
350 shouldsleep
= 1; /* We need to wait until we're _told_ to die */
351 else if (priv
->psstate
== PS_STATE_SLEEP
)
352 shouldsleep
= 1; /* Sleep mode. Nothing we can do till it wakes */
353 else if (priv
->cmd_timed_out
)
354 shouldsleep
= 0; /* Command timed out. Recover */
355 else if (!priv
->fw_ready
)
356 shouldsleep
= 1; /* Firmware not ready. We're waiting for it */
357 else if (priv
->dnld_sent
)
358 shouldsleep
= 1; /* Something is en route to the device already */
359 else if (priv
->tx_pending_len
> 0)
360 shouldsleep
= 0; /* We've a packet to send */
361 else if (priv
->resp_len
[priv
->resp_idx
])
362 shouldsleep
= 0; /* We have a command response */
363 else if (priv
->cur_cmd
)
364 shouldsleep
= 1; /* Can't send a command; one already running */
365 else if (!list_empty(&priv
->cmdpendingq
) &&
366 !(priv
->wakeup_dev_required
))
367 shouldsleep
= 0; /* We have a command to send */
368 else if (kfifo_len(&priv
->event_fifo
))
369 shouldsleep
= 0; /* We have an event to process */
371 shouldsleep
= 1; /* No command */
374 lbs_deb_thread("sleeping, connect_status %d, "
375 "psmode %d, psstate %d\n",
376 priv
->connect_status
,
377 priv
->psmode
, priv
->psstate
);
378 spin_unlock_irq(&priv
->driver_lock
);
381 spin_unlock_irq(&priv
->driver_lock
);
383 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
384 priv
->currenttxskb
, priv
->dnld_sent
);
386 set_current_state(TASK_RUNNING
);
387 remove_wait_queue(&priv
->waitq
, &wait
);
389 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
390 priv
->currenttxskb
, priv
->dnld_sent
);
392 if (kthread_should_stop()) {
393 lbs_deb_thread("break from main thread\n");
397 if (priv
->surpriseremoved
) {
398 lbs_deb_thread("adapter removed; waiting to die...\n");
402 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
403 priv
->currenttxskb
, priv
->dnld_sent
);
405 /* Process any pending command response */
406 spin_lock_irq(&priv
->driver_lock
);
407 resp_idx
= priv
->resp_idx
;
408 if (priv
->resp_len
[resp_idx
]) {
409 spin_unlock_irq(&priv
->driver_lock
);
410 lbs_process_command_response(priv
,
411 priv
->resp_buf
[resp_idx
],
412 priv
->resp_len
[resp_idx
]);
413 spin_lock_irq(&priv
->driver_lock
);
414 priv
->resp_len
[resp_idx
] = 0;
416 spin_unlock_irq(&priv
->driver_lock
);
418 /* Process hardware events, e.g. card removed, link lost */
419 spin_lock_irq(&priv
->driver_lock
);
420 while (kfifo_len(&priv
->event_fifo
)) {
423 if (kfifo_out(&priv
->event_fifo
,
424 (unsigned char *) &event
, sizeof(event
)) !=
427 spin_unlock_irq(&priv
->driver_lock
);
428 lbs_process_event(priv
, event
);
429 spin_lock_irq(&priv
->driver_lock
);
431 spin_unlock_irq(&priv
->driver_lock
);
433 if (priv
->wakeup_dev_required
) {
434 lbs_deb_thread("Waking up device...\n");
436 if (priv
->exit_deep_sleep(priv
))
437 lbs_deb_thread("Wakeup device failed\n");
441 /* command timeout stuff */
442 if (priv
->cmd_timed_out
&& priv
->cur_cmd
) {
443 struct cmd_ctrl_node
*cmdnode
= priv
->cur_cmd
;
445 lbs_pr_info("Timeout submitting command 0x%04x\n",
446 le16_to_cpu(cmdnode
->cmdbuf
->command
));
447 lbs_complete_command(priv
, cmdnode
, -ETIMEDOUT
);
448 if (priv
->reset_card
)
449 priv
->reset_card(priv
);
451 priv
->cmd_timed_out
= 0;
456 /* Check if we need to confirm Sleep Request received previously */
457 if (priv
->psstate
== PS_STATE_PRE_SLEEP
&&
458 !priv
->dnld_sent
&& !priv
->cur_cmd
) {
459 if (priv
->connect_status
== LBS_CONNECTED
) {
460 lbs_deb_thread("pre-sleep, currenttxskb %p, "
461 "dnld_sent %d, cur_cmd %p\n",
462 priv
->currenttxskb
, priv
->dnld_sent
,
465 lbs_ps_confirm_sleep(priv
);
467 /* workaround for firmware sending
468 * deauth/linkloss event immediately
469 * after sleep request; remove this
470 * after firmware fixes it
472 priv
->psstate
= PS_STATE_AWAKE
;
473 lbs_pr_alert("ignore PS_SleepConfirm in "
474 "non-connected state\n");
478 /* The PS state is changed during processing of Sleep Request
481 if ((priv
->psstate
== PS_STATE_SLEEP
) ||
482 (priv
->psstate
== PS_STATE_PRE_SLEEP
))
485 if (priv
->is_deep_sleep
)
488 /* Execute the next command */
489 if (!priv
->dnld_sent
&& !priv
->cur_cmd
)
490 lbs_execute_next_command(priv
);
492 spin_lock_irq(&priv
->driver_lock
);
493 if (!priv
->dnld_sent
&& priv
->tx_pending_len
> 0) {
494 int ret
= priv
->hw_host_to_card(priv
, MVMS_DAT
,
495 priv
->tx_pending_buf
,
496 priv
->tx_pending_len
);
498 lbs_deb_tx("host_to_card failed %d\n", ret
);
499 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
501 priv
->tx_pending_len
= 0;
502 if (!priv
->currenttxskb
) {
503 /* We can wake the queues immediately if we aren't
504 waiting for TX feedback */
505 if (priv
->connect_status
== LBS_CONNECTED
)
506 netif_wake_queue(priv
->dev
);
507 if (priv
->mesh_dev
&&
508 lbs_mesh_connected(priv
))
509 netif_wake_queue(priv
->mesh_dev
);
512 spin_unlock_irq(&priv
->driver_lock
);
515 del_timer(&priv
->command_timer
);
516 del_timer(&priv
->auto_deepsleep_timer
);
518 lbs_deb_leave(LBS_DEB_THREAD
);
523 * lbs_setup_firmware - gets the HW spec from the firmware and sets
524 * some basic parameters
526 * @priv: A pointer to &struct lbs_private structure
529 static int lbs_setup_firmware(struct lbs_private
*priv
)
532 s16 curlevel
= 0, minlevel
= 0, maxlevel
= 0;
534 lbs_deb_enter(LBS_DEB_FW
);
536 /* Read MAC address from firmware */
537 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
538 ret
= lbs_update_hw_spec(priv
);
542 /* Read power levels if available */
543 ret
= lbs_get_tx_power(priv
, &curlevel
, &minlevel
, &maxlevel
);
545 priv
->txpower_cur
= curlevel
;
546 priv
->txpower_min
= minlevel
;
547 priv
->txpower_max
= maxlevel
;
550 /* Send cmd to FW to enable 11D function */
551 ret
= lbs_set_snmp_mib(priv
, SNMP_MIB_OID_11D_ENABLE
, 1);
553 lbs_set_mac_control(priv
);
555 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
559 int lbs_suspend(struct lbs_private
*priv
)
563 lbs_deb_enter(LBS_DEB_FW
);
565 if (priv
->is_deep_sleep
) {
566 ret
= lbs_set_deep_sleep(priv
, 0);
568 lbs_pr_err("deep sleep cancellation failed: %d\n", ret
);
571 priv
->deep_sleep_required
= 1;
574 ret
= lbs_set_host_sleep(priv
, 1);
576 netif_device_detach(priv
->dev
);
578 netif_device_detach(priv
->mesh_dev
);
580 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
583 EXPORT_SYMBOL_GPL(lbs_suspend
);
585 int lbs_resume(struct lbs_private
*priv
)
589 lbs_deb_enter(LBS_DEB_FW
);
591 ret
= lbs_set_host_sleep(priv
, 0);
593 netif_device_attach(priv
->dev
);
595 netif_device_attach(priv
->mesh_dev
);
597 if (priv
->deep_sleep_required
) {
598 priv
->deep_sleep_required
= 0;
599 ret
= lbs_set_deep_sleep(priv
, 1);
601 lbs_pr_err("deep sleep activation failed: %d\n", ret
);
604 if (priv
->setup_fw_on_resume
)
605 ret
= lbs_setup_firmware(priv
);
607 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
610 EXPORT_SYMBOL_GPL(lbs_resume
);
613 * lbs_cmd_timeout_handler - handles the timeout of command sending.
614 * It will re-send the same command again.
616 * @data: &struct lbs_private pointer
618 static void lbs_cmd_timeout_handler(unsigned long data
)
620 struct lbs_private
*priv
= (struct lbs_private
*)data
;
623 lbs_deb_enter(LBS_DEB_CMD
);
624 spin_lock_irqsave(&priv
->driver_lock
, flags
);
629 lbs_pr_info("command 0x%04x timed out\n",
630 le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
));
632 priv
->cmd_timed_out
= 1;
633 wake_up_interruptible(&priv
->waitq
);
635 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
636 lbs_deb_leave(LBS_DEB_CMD
);
640 * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
641 * timer expires and no activity (command, event, data etc.) is detected.
642 * @data: &struct lbs_private pointer
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_set_multicast_list
= lbs_set_multicast_list
,
773 .ndo_change_mtu
= eth_change_mtu
,
774 .ndo_validate_addr
= eth_validate_addr
,
778 * lbs_add_card - adds the card. It will probe the
779 * card, allocate the lbs_priv and initialize the device.
781 * @card: A pointer to card
782 * @dmdev: A pointer to &struct device
783 * returns: 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
= EHS_REMOVE_WAKEUP
;
842 priv
->wol_gpio
= 0xff;
844 priv
->ehs_remove_supported
= true;
852 lbs_free_adapter(priv
);
860 lbs_deb_leave_args(LBS_DEB_MAIN
, "priv %p", priv
);
863 EXPORT_SYMBOL_GPL(lbs_add_card
);
866 void lbs_remove_card(struct lbs_private
*priv
)
868 struct net_device
*dev
= priv
->dev
;
870 lbs_deb_enter(LBS_DEB_MAIN
);
872 lbs_remove_mesh(priv
);
873 lbs_scan_deinit(priv
);
877 cancel_work_sync(&priv
->mcast_work
);
879 /* worker thread destruction blocks on the in-flight command which
880 * should have been cleared already in lbs_stop_card().
882 lbs_deb_main("destroying worker thread\n");
883 destroy_workqueue(priv
->work_thread
);
884 lbs_deb_main("done destroying worker thread\n");
886 if (priv
->psmode
== LBS802_11POWERMODEMAX_PSP
) {
887 priv
->psmode
= LBS802_11POWERMODECAM
;
888 lbs_set_ps_mode(priv
, PS_MODE_ACTION_EXIT_PS
, true);
891 if (priv
->is_deep_sleep
) {
892 priv
->is_deep_sleep
= 0;
893 wake_up_interruptible(&priv
->ds_awake_q
);
896 priv
->is_host_sleep_configured
= 0;
897 priv
->is_host_sleep_activated
= 0;
898 wake_up_interruptible(&priv
->host_sleep_q
);
900 /* Stop the thread servicing the interrupts */
901 priv
->surpriseremoved
= 1;
902 kthread_stop(priv
->main_thread
);
904 lbs_free_adapter(priv
);
908 lbs_deb_leave(LBS_DEB_MAIN
);
910 EXPORT_SYMBOL_GPL(lbs_remove_card
);
913 int lbs_rtap_supported(struct lbs_private
*priv
)
915 if (MRVL_FW_MAJOR_REV(priv
->fwrelease
) == MRVL_FW_V5
)
918 /* newer firmware use a capability mask */
919 return ((MRVL_FW_MAJOR_REV(priv
->fwrelease
) >= MRVL_FW_V10
) &&
920 (priv
->fwcapinfo
& MESH_CAPINFO_ENABLE_MASK
));
924 int lbs_start_card(struct lbs_private
*priv
)
926 struct net_device
*dev
= priv
->dev
;
929 lbs_deb_enter(LBS_DEB_MAIN
);
931 /* poke the firmware */
932 ret
= lbs_setup_firmware(priv
);
936 if (lbs_cfg_register(priv
)) {
937 lbs_pr_err("cannot register device\n");
941 lbs_update_channel(priv
);
945 lbs_debugfs_init_one(priv
, dev
);
947 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev
->name
);
952 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
955 EXPORT_SYMBOL_GPL(lbs_start_card
);
958 void lbs_stop_card(struct lbs_private
*priv
)
960 struct net_device
*dev
;
961 struct cmd_ctrl_node
*cmdnode
;
964 lbs_deb_enter(LBS_DEB_MAIN
);
970 netif_stop_queue(dev
);
971 netif_carrier_off(dev
);
973 lbs_debugfs_remove_one(priv
);
974 lbs_deinit_mesh(priv
);
976 /* Delete the timeout of the currently processing command */
977 del_timer_sync(&priv
->command_timer
);
978 del_timer_sync(&priv
->auto_deepsleep_timer
);
980 /* Flush pending command nodes */
981 spin_lock_irqsave(&priv
->driver_lock
, flags
);
982 lbs_deb_main("clearing pending commands\n");
983 list_for_each_entry(cmdnode
, &priv
->cmdpendingq
, list
) {
984 cmdnode
->result
= -ENOENT
;
985 cmdnode
->cmdwaitqwoken
= 1;
986 wake_up_interruptible(&cmdnode
->cmdwait_q
);
989 /* Flush the command the card is currently processing */
991 lbs_deb_main("clearing current command\n");
992 priv
->cur_cmd
->result
= -ENOENT
;
993 priv
->cur_cmd
->cmdwaitqwoken
= 1;
994 wake_up_interruptible(&priv
->cur_cmd
->cmdwait_q
);
996 lbs_deb_main("done clearing commands\n");
997 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
999 unregister_netdev(dev
);
1002 lbs_deb_leave(LBS_DEB_MAIN
);
1004 EXPORT_SYMBOL_GPL(lbs_stop_card
);
1007 void lbs_queue_event(struct lbs_private
*priv
, u32 event
)
1009 unsigned long flags
;
1011 lbs_deb_enter(LBS_DEB_THREAD
);
1012 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1014 if (priv
->psstate
== PS_STATE_SLEEP
)
1015 priv
->psstate
= PS_STATE_AWAKE
;
1017 kfifo_in(&priv
->event_fifo
, (unsigned char *) &event
, sizeof(u32
));
1019 wake_up_interruptible(&priv
->waitq
);
1021 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1022 lbs_deb_leave(LBS_DEB_THREAD
);
1024 EXPORT_SYMBOL_GPL(lbs_queue_event
);
1026 void lbs_notify_command_response(struct lbs_private
*priv
, u8 resp_idx
)
1028 lbs_deb_enter(LBS_DEB_THREAD
);
1030 if (priv
->psstate
== PS_STATE_SLEEP
)
1031 priv
->psstate
= PS_STATE_AWAKE
;
1033 /* Swap buffers by flipping the response index */
1034 BUG_ON(resp_idx
> 1);
1035 priv
->resp_idx
= resp_idx
;
1037 wake_up_interruptible(&priv
->waitq
);
1039 lbs_deb_leave(LBS_DEB_THREAD
);
1041 EXPORT_SYMBOL_GPL(lbs_notify_command_response
);
1044 * lbs_get_firmware - Retrieves two-stage firmware
1046 * @dev: A pointer to &device structure
1047 * @user_helper: User-defined helper firmware file
1048 * @user_mainfw: User-defined main firmware file
1049 * @card_model: Bus-specific card model ID used to filter firmware table
1051 * @fw_table: Table of firmware file names and device model numbers
1052 * terminated by an entry with a NULL helper name
1053 * @helper: On success, the helper firmware; caller must free
1054 * @mainfw: On success, the main firmware; caller must free
1056 * returns: 0 on success, non-zero on failure
1058 int lbs_get_firmware(struct device
*dev
, const char *user_helper
,
1059 const char *user_mainfw
, u32 card_model
,
1060 const struct lbs_fw_table
*fw_table
,
1061 const struct firmware
**helper
,
1062 const struct firmware
**mainfw
)
1064 const struct lbs_fw_table
*iter
;
1067 BUG_ON(helper
== NULL
);
1068 BUG_ON(mainfw
== NULL
);
1070 /* Try user-specified firmware first */
1072 ret
= request_firmware(helper
, user_helper
, dev
);
1074 lbs_pr_err("couldn't find helper firmware %s",
1080 ret
= request_firmware(mainfw
, user_mainfw
, dev
);
1082 lbs_pr_err("couldn't find main firmware %s",
1088 if (*helper
&& *mainfw
)
1091 /* Otherwise search for firmware to use. If neither the helper or
1092 * the main firmware were specified by the user, then we need to
1093 * make sure that found helper & main are from the same entry in
1097 while (iter
&& iter
->helper
) {
1098 if (iter
->model
!= card_model
)
1101 if (*helper
== NULL
) {
1102 ret
= request_firmware(helper
, iter
->helper
, dev
);
1106 /* If the device has one-stage firmware (ie cf8305) and
1107 * we've got it then we don't need to bother with the
1110 if (iter
->fwname
== NULL
)
1114 if (*mainfw
== NULL
) {
1115 ret
= request_firmware(mainfw
, iter
->fwname
, dev
);
1116 if (ret
&& !user_helper
) {
1117 /* Clear the helper if it wasn't user-specified
1118 * and the main firmware load failed, to ensure
1119 * we don't have mismatched firmware pairs.
1121 release_firmware(*helper
);
1126 if (*helper
&& *mainfw
)
1136 release_firmware(*helper
);
1140 release_firmware(*mainfw
);
1146 EXPORT_SYMBOL_GPL(lbs_get_firmware
);
1148 static int __init
lbs_init_module(void)
1150 lbs_deb_enter(LBS_DEB_MAIN
);
1151 memset(&confirm_sleep
, 0, sizeof(confirm_sleep
));
1152 confirm_sleep
.hdr
.command
= cpu_to_le16(CMD_802_11_PS_MODE
);
1153 confirm_sleep
.hdr
.size
= cpu_to_le16(sizeof(confirm_sleep
));
1154 confirm_sleep
.action
= cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED
);
1156 lbs_deb_leave(LBS_DEB_MAIN
);
1160 static void __exit
lbs_exit_module(void)
1162 lbs_deb_enter(LBS_DEB_MAIN
);
1163 lbs_debugfs_remove();
1164 lbs_deb_leave(LBS_DEB_MAIN
);
1167 module_init(lbs_init_module
);
1168 module_exit(lbs_exit_module
);
1170 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1171 MODULE_AUTHOR("Marvell International Ltd.");
1172 MODULE_LICENSE("GPL");