2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9 #include <linux/moduleparam.h>
10 #include <linux/delay.h>
11 #include <linux/etherdevice.h>
12 #include <linux/hardirq.h>
13 #include <linux/netdevice.h>
14 #include <linux/if_arp.h>
15 #include <linux/kthread.h>
16 #include <linux/kfifo.h>
17 #include <linux/slab.h>
18 #include <net/cfg80211.h>
27 #define DRIVER_RELEASE_VERSION "323.p0"
28 const char lbs_driver_version
[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
35 /* Module parameters */
36 unsigned int lbs_debug
;
37 EXPORT_SYMBOL_GPL(lbs_debug
);
38 module_param_named(libertas_debug
, lbs_debug
, int, 0644);
40 unsigned int lbs_disablemesh
;
41 EXPORT_SYMBOL_GPL(lbs_disablemesh
);
42 module_param_named(libertas_disablemesh
, lbs_disablemesh
, int, 0644);
46 * This global structure is used to send the confirm_sleep command as
47 * fast as possible down to the firmware.
49 struct cmd_confirm_sleep confirm_sleep
;
53 * the table to keep region code
55 u16 lbs_region_code_to_index
[MRVDRV_MAX_REGION_CODE
] =
56 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
59 * FW rate table. FW refers to rates by their index in this table, not by the
60 * rate value itself. Values of 0x00 are
63 static u8 fw_data_rates
[MAX_RATES
] =
64 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
65 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
69 * lbs_fw_index_to_data_rate - use index to get the data rate
71 * @idx: The index of data rate
72 * returns: data rate or 0
74 u32
lbs_fw_index_to_data_rate(u8 idx
)
76 if (idx
>= sizeof(fw_data_rates
))
78 return fw_data_rates
[idx
];
82 * lbs_data_rate_to_fw_index - use rate to get the index
87 u8
lbs_data_rate_to_fw_index(u32 rate
)
94 for (i
= 0; i
< sizeof(fw_data_rates
); i
++) {
95 if (rate
== fw_data_rates
[i
])
103 * lbs_dev_open - open the ethX interface
105 * @dev: A pointer to &net_device structure
106 * returns: 0 or -EBUSY if monitor mode active
108 static int lbs_dev_open(struct net_device
*dev
)
110 struct lbs_private
*priv
= dev
->ml_priv
;
113 lbs_deb_enter(LBS_DEB_NET
);
115 spin_lock_irq(&priv
->driver_lock
);
116 priv
->stopping
= false;
118 if (priv
->connect_status
== LBS_CONNECTED
)
119 netif_carrier_on(dev
);
121 netif_carrier_off(dev
);
123 if (!priv
->tx_pending_len
)
124 netif_wake_queue(dev
);
126 spin_unlock_irq(&priv
->driver_lock
);
127 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
132 * lbs_eth_stop - close the ethX interface
134 * @dev: A pointer to &net_device structure
137 static int lbs_eth_stop(struct net_device
*dev
)
139 struct lbs_private
*priv
= dev
->ml_priv
;
141 lbs_deb_enter(LBS_DEB_NET
);
143 spin_lock_irq(&priv
->driver_lock
);
144 priv
->stopping
= true;
145 netif_stop_queue(dev
);
146 spin_unlock_irq(&priv
->driver_lock
);
148 schedule_work(&priv
->mcast_work
);
149 cancel_delayed_work_sync(&priv
->scan_work
);
150 if (priv
->scan_req
) {
151 cfg80211_scan_done(priv
->scan_req
, false);
152 priv
->scan_req
= NULL
;
155 lbs_deb_leave(LBS_DEB_NET
);
159 void lbs_host_to_card_done(struct lbs_private
*priv
)
163 lbs_deb_enter(LBS_DEB_THREAD
);
165 spin_lock_irqsave(&priv
->driver_lock
, flags
);
167 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
169 /* Wake main thread if commands are pending */
170 if (!priv
->cur_cmd
|| priv
->tx_pending_len
> 0) {
171 if (!priv
->wakeup_dev_required
)
172 wake_up_interruptible(&priv
->waitq
);
175 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
176 lbs_deb_leave(LBS_DEB_THREAD
);
178 EXPORT_SYMBOL_GPL(lbs_host_to_card_done
);
180 int lbs_set_mac_address(struct net_device
*dev
, void *addr
)
183 struct lbs_private
*priv
= dev
->ml_priv
;
184 struct sockaddr
*phwaddr
= addr
;
185 struct cmd_ds_802_11_mac_address cmd
;
187 lbs_deb_enter(LBS_DEB_NET
);
189 /* In case it was called from the mesh device */
192 cmd
.hdr
.size
= cpu_to_le16(sizeof(cmd
));
193 cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
194 memcpy(cmd
.macadd
, phwaddr
->sa_data
, ETH_ALEN
);
196 ret
= lbs_cmd_with_response(priv
, CMD_802_11_MAC_ADDRESS
, &cmd
);
198 lbs_deb_net("set MAC address failed\n");
202 memcpy(priv
->current_addr
, phwaddr
->sa_data
, ETH_ALEN
);
203 memcpy(dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
205 memcpy(priv
->mesh_dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
208 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
213 static inline int mac_in_list(unsigned char *list
, int list_len
,
217 if (!memcmp(list
, mac
, ETH_ALEN
))
226 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr
*cmd
,
227 struct net_device
*dev
, int nr_addrs
)
230 struct netdev_hw_addr
*ha
;
233 if ((dev
->flags
& (IFF_UP
|IFF_MULTICAST
)) != (IFF_UP
|IFF_MULTICAST
))
236 netif_addr_lock_bh(dev
);
237 cnt
= netdev_mc_count(dev
);
238 netdev_for_each_mc_addr(ha
, dev
) {
239 if (mac_in_list(cmd
->maclist
, nr_addrs
, ha
->addr
)) {
240 lbs_deb_net("mcast address %s:%pM skipped\n", dev
->name
,
246 if (i
== MRVDRV_MAX_MULTICAST_LIST_SIZE
)
248 memcpy(&cmd
->maclist
[6*i
], ha
->addr
, ETH_ALEN
);
249 lbs_deb_net("mcast address %s:%pM added to filter\n", dev
->name
,
254 netif_addr_unlock_bh(dev
);
261 static void lbs_set_mcast_worker(struct work_struct
*work
)
263 struct lbs_private
*priv
= container_of(work
, struct lbs_private
, mcast_work
);
264 struct cmd_ds_mac_multicast_adr mcast_cmd
;
267 int old_mac_control
= priv
->mac_control
;
269 lbs_deb_enter(LBS_DEB_NET
);
271 dev_flags
= priv
->dev
->flags
;
273 dev_flags
|= priv
->mesh_dev
->flags
;
275 if (dev_flags
& IFF_PROMISC
) {
276 priv
->mac_control
|= CMD_ACT_MAC_PROMISCUOUS_ENABLE
;
277 priv
->mac_control
&= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE
|
278 CMD_ACT_MAC_MULTICAST_ENABLE
);
279 goto out_set_mac_control
;
280 } else if (dev_flags
& IFF_ALLMULTI
) {
282 priv
->mac_control
|= CMD_ACT_MAC_ALL_MULTICAST_ENABLE
;
283 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
284 CMD_ACT_MAC_MULTICAST_ENABLE
);
285 goto out_set_mac_control
;
288 /* Once for priv->dev, again for priv->mesh_dev if it exists */
289 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->dev
, 0);
290 if (nr_addrs
>= 0 && priv
->mesh_dev
)
291 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->mesh_dev
, nr_addrs
);
296 int size
= offsetof(struct cmd_ds_mac_multicast_adr
,
297 maclist
[6*nr_addrs
]);
299 mcast_cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
300 mcast_cmd
.hdr
.size
= cpu_to_le16(size
);
301 mcast_cmd
.nr_of_adrs
= cpu_to_le16(nr_addrs
);
303 lbs_cmd_async(priv
, CMD_MAC_MULTICAST_ADR
, &mcast_cmd
.hdr
, size
);
305 priv
->mac_control
|= CMD_ACT_MAC_MULTICAST_ENABLE
;
307 priv
->mac_control
&= ~CMD_ACT_MAC_MULTICAST_ENABLE
;
309 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
310 CMD_ACT_MAC_ALL_MULTICAST_ENABLE
);
312 if (priv
->mac_control
!= old_mac_control
)
313 lbs_set_mac_control(priv
);
315 lbs_deb_leave(LBS_DEB_NET
);
318 void lbs_set_multicast_list(struct net_device
*dev
)
320 struct lbs_private
*priv
= dev
->ml_priv
;
322 schedule_work(&priv
->mcast_work
);
326 * lbs_thread - handles the major jobs in the LBS driver.
327 * It handles all events generated by firmware, RX data received
328 * from firmware and TX data sent from kernel.
330 * @data: A pointer to &lbs_thread structure
333 static int lbs_thread(void *data
)
335 struct net_device
*dev
= data
;
336 struct lbs_private
*priv
= dev
->ml_priv
;
339 lbs_deb_enter(LBS_DEB_THREAD
);
341 init_waitqueue_entry(&wait
, current
);
347 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
348 priv
->currenttxskb
, priv
->dnld_sent
);
350 add_wait_queue(&priv
->waitq
, &wait
);
351 set_current_state(TASK_INTERRUPTIBLE
);
352 spin_lock_irq(&priv
->driver_lock
);
354 if (kthread_should_stop())
355 shouldsleep
= 0; /* Bye */
356 else if (priv
->surpriseremoved
)
357 shouldsleep
= 1; /* We need to wait until we're _told_ to die */
358 else if (priv
->psstate
== PS_STATE_SLEEP
)
359 shouldsleep
= 1; /* Sleep mode. Nothing we can do till it wakes */
360 else if (priv
->cmd_timed_out
)
361 shouldsleep
= 0; /* Command timed out. Recover */
362 else if (!priv
->fw_ready
)
363 shouldsleep
= 1; /* Firmware not ready. We're waiting for it */
364 else if (priv
->dnld_sent
)
365 shouldsleep
= 1; /* Something is en route to the device already */
366 else if (priv
->tx_pending_len
> 0)
367 shouldsleep
= 0; /* We've a packet to send */
368 else if (priv
->resp_len
[priv
->resp_idx
])
369 shouldsleep
= 0; /* We have a command response */
370 else if (priv
->cur_cmd
)
371 shouldsleep
= 1; /* Can't send a command; one already running */
372 else if (!list_empty(&priv
->cmdpendingq
) &&
373 !(priv
->wakeup_dev_required
))
374 shouldsleep
= 0; /* We have a command to send */
375 else if (kfifo_len(&priv
->event_fifo
))
376 shouldsleep
= 0; /* We have an event to process */
378 shouldsleep
= 1; /* No command */
381 lbs_deb_thread("sleeping, connect_status %d, "
382 "psmode %d, psstate %d\n",
383 priv
->connect_status
,
384 priv
->psmode
, priv
->psstate
);
385 spin_unlock_irq(&priv
->driver_lock
);
388 spin_unlock_irq(&priv
->driver_lock
);
390 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
391 priv
->currenttxskb
, priv
->dnld_sent
);
393 set_current_state(TASK_RUNNING
);
394 remove_wait_queue(&priv
->waitq
, &wait
);
396 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
397 priv
->currenttxskb
, priv
->dnld_sent
);
399 if (kthread_should_stop()) {
400 lbs_deb_thread("break from main thread\n");
404 if (priv
->surpriseremoved
) {
405 lbs_deb_thread("adapter removed; waiting to die...\n");
409 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
410 priv
->currenttxskb
, priv
->dnld_sent
);
412 /* Process any pending command response */
413 spin_lock_irq(&priv
->driver_lock
);
414 resp_idx
= priv
->resp_idx
;
415 if (priv
->resp_len
[resp_idx
]) {
416 spin_unlock_irq(&priv
->driver_lock
);
417 lbs_process_command_response(priv
,
418 priv
->resp_buf
[resp_idx
],
419 priv
->resp_len
[resp_idx
]);
420 spin_lock_irq(&priv
->driver_lock
);
421 priv
->resp_len
[resp_idx
] = 0;
423 spin_unlock_irq(&priv
->driver_lock
);
425 /* Process hardware events, e.g. card removed, link lost */
426 spin_lock_irq(&priv
->driver_lock
);
427 while (kfifo_len(&priv
->event_fifo
)) {
430 if (kfifo_out(&priv
->event_fifo
,
431 (unsigned char *) &event
, sizeof(event
)) !=
434 spin_unlock_irq(&priv
->driver_lock
);
435 lbs_process_event(priv
, event
);
436 spin_lock_irq(&priv
->driver_lock
);
438 spin_unlock_irq(&priv
->driver_lock
);
440 if (priv
->wakeup_dev_required
) {
441 lbs_deb_thread("Waking up device...\n");
443 if (priv
->exit_deep_sleep(priv
))
444 lbs_deb_thread("Wakeup device failed\n");
448 /* command timeout stuff */
449 if (priv
->cmd_timed_out
&& priv
->cur_cmd
) {
450 struct cmd_ctrl_node
*cmdnode
= priv
->cur_cmd
;
452 netdev_info(dev
, "Timeout submitting command 0x%04x\n",
453 le16_to_cpu(cmdnode
->cmdbuf
->command
));
454 lbs_complete_command(priv
, cmdnode
, -ETIMEDOUT
);
455 if (priv
->reset_card
)
456 priv
->reset_card(priv
);
458 priv
->cmd_timed_out
= 0;
463 /* Check if we need to confirm Sleep Request received previously */
464 if (priv
->psstate
== PS_STATE_PRE_SLEEP
&&
465 !priv
->dnld_sent
&& !priv
->cur_cmd
) {
466 if (priv
->connect_status
== LBS_CONNECTED
) {
467 lbs_deb_thread("pre-sleep, currenttxskb %p, "
468 "dnld_sent %d, cur_cmd %p\n",
469 priv
->currenttxskb
, priv
->dnld_sent
,
472 lbs_ps_confirm_sleep(priv
);
474 /* workaround for firmware sending
475 * deauth/linkloss event immediately
476 * after sleep request; remove this
477 * after firmware fixes it
479 priv
->psstate
= PS_STATE_AWAKE
;
481 "ignore PS_SleepConfirm in 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
);
530 * lbs_setup_firmware - gets the HW spec from the firmware and sets
531 * some basic parameters
533 * @priv: A pointer to &struct lbs_private structure
536 static int lbs_setup_firmware(struct lbs_private
*priv
)
539 s16 curlevel
= 0, minlevel
= 0, maxlevel
= 0;
541 lbs_deb_enter(LBS_DEB_FW
);
543 /* Read MAC address from firmware */
544 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
545 ret
= lbs_update_hw_spec(priv
);
549 /* Read power levels if available */
550 ret
= lbs_get_tx_power(priv
, &curlevel
, &minlevel
, &maxlevel
);
552 priv
->txpower_cur
= curlevel
;
553 priv
->txpower_min
= minlevel
;
554 priv
->txpower_max
= maxlevel
;
557 /* Send cmd to FW to enable 11D function */
558 ret
= lbs_set_snmp_mib(priv
, SNMP_MIB_OID_11D_ENABLE
, 1);
560 lbs_set_mac_control(priv
);
562 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
566 int lbs_suspend(struct lbs_private
*priv
)
570 lbs_deb_enter(LBS_DEB_FW
);
572 if (priv
->is_deep_sleep
) {
573 ret
= lbs_set_deep_sleep(priv
, 0);
575 netdev_err(priv
->dev
,
576 "deep sleep cancellation failed: %d\n", ret
);
579 priv
->deep_sleep_required
= 1;
582 ret
= lbs_set_host_sleep(priv
, 1);
584 netif_device_detach(priv
->dev
);
586 netif_device_detach(priv
->mesh_dev
);
588 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
591 EXPORT_SYMBOL_GPL(lbs_suspend
);
593 int lbs_resume(struct lbs_private
*priv
)
597 lbs_deb_enter(LBS_DEB_FW
);
599 ret
= lbs_set_host_sleep(priv
, 0);
601 netif_device_attach(priv
->dev
);
603 netif_device_attach(priv
->mesh_dev
);
605 if (priv
->deep_sleep_required
) {
606 priv
->deep_sleep_required
= 0;
607 ret
= lbs_set_deep_sleep(priv
, 1);
609 netdev_err(priv
->dev
,
610 "deep sleep activation failed: %d\n", ret
);
613 if (priv
->setup_fw_on_resume
)
614 ret
= lbs_setup_firmware(priv
);
616 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
619 EXPORT_SYMBOL_GPL(lbs_resume
);
622 * lbs_cmd_timeout_handler - handles the timeout of command sending.
623 * It will re-send the same command again.
625 * @data: &struct lbs_private pointer
627 static void lbs_cmd_timeout_handler(unsigned long data
)
629 struct lbs_private
*priv
= (struct lbs_private
*)data
;
632 lbs_deb_enter(LBS_DEB_CMD
);
633 spin_lock_irqsave(&priv
->driver_lock
, flags
);
638 netdev_info(priv
->dev
, "command 0x%04x timed out\n",
639 le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
));
641 priv
->cmd_timed_out
= 1;
642 wake_up_interruptible(&priv
->waitq
);
644 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
645 lbs_deb_leave(LBS_DEB_CMD
);
649 * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
650 * timer expires and no activity (command, event, data etc.) is detected.
651 * @data: &struct lbs_private pointer
654 static void auto_deepsleep_timer_fn(unsigned long data
)
656 struct lbs_private
*priv
= (struct lbs_private
*)data
;
658 lbs_deb_enter(LBS_DEB_CMD
);
660 if (priv
->is_activity_detected
) {
661 priv
->is_activity_detected
= 0;
663 if (priv
->is_auto_deep_sleep_enabled
&&
664 (!priv
->wakeup_dev_required
) &&
665 (priv
->connect_status
!= LBS_CONNECTED
)) {
666 struct cmd_header cmd
;
668 lbs_deb_main("Entering auto deep sleep mode...\n");
669 memset(&cmd
, 0, sizeof(cmd
));
670 cmd
.size
= cpu_to_le16(sizeof(cmd
));
671 lbs_cmd_async(priv
, CMD_802_11_DEEP_SLEEP
, &cmd
,
675 mod_timer(&priv
->auto_deepsleep_timer
, jiffies
+
676 (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
677 lbs_deb_leave(LBS_DEB_CMD
);
680 int lbs_enter_auto_deep_sleep(struct lbs_private
*priv
)
682 lbs_deb_enter(LBS_DEB_SDIO
);
684 priv
->is_auto_deep_sleep_enabled
= 1;
685 if (priv
->is_deep_sleep
)
686 priv
->wakeup_dev_required
= 1;
687 mod_timer(&priv
->auto_deepsleep_timer
,
688 jiffies
+ (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
690 lbs_deb_leave(LBS_DEB_SDIO
);
694 int lbs_exit_auto_deep_sleep(struct lbs_private
*priv
)
696 lbs_deb_enter(LBS_DEB_SDIO
);
698 priv
->is_auto_deep_sleep_enabled
= 0;
699 priv
->auto_deep_sleep_timeout
= 0;
700 del_timer(&priv
->auto_deepsleep_timer
);
702 lbs_deb_leave(LBS_DEB_SDIO
);
706 static int lbs_init_adapter(struct lbs_private
*priv
)
710 lbs_deb_enter(LBS_DEB_MAIN
);
712 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
714 priv
->connect_status
= LBS_DISCONNECTED
;
715 priv
->channel
= DEFAULT_AD_HOC_CHANNEL
;
716 priv
->mac_control
= CMD_ACT_MAC_RX_ON
| CMD_ACT_MAC_TX_ON
;
718 priv
->psmode
= LBS802_11POWERMODECAM
;
719 priv
->psstate
= PS_STATE_FULL_POWER
;
720 priv
->is_deep_sleep
= 0;
721 priv
->is_auto_deep_sleep_enabled
= 0;
722 priv
->deep_sleep_required
= 0;
723 priv
->wakeup_dev_required
= 0;
724 init_waitqueue_head(&priv
->ds_awake_q
);
725 init_waitqueue_head(&priv
->scan_q
);
726 priv
->authtype_auto
= 1;
727 priv
->is_host_sleep_configured
= 0;
728 priv
->is_host_sleep_activated
= 0;
729 init_waitqueue_head(&priv
->host_sleep_q
);
730 mutex_init(&priv
->lock
);
732 setup_timer(&priv
->command_timer
, lbs_cmd_timeout_handler
,
733 (unsigned long)priv
);
734 setup_timer(&priv
->auto_deepsleep_timer
, auto_deepsleep_timer_fn
,
735 (unsigned long)priv
);
737 INIT_LIST_HEAD(&priv
->cmdfreeq
);
738 INIT_LIST_HEAD(&priv
->cmdpendingq
);
740 spin_lock_init(&priv
->driver_lock
);
742 /* Allocate the command buffers */
743 if (lbs_allocate_cmd_buffer(priv
)) {
744 pr_err("Out of memory allocating command buffers\n");
749 priv
->resp_len
[0] = priv
->resp_len
[1] = 0;
751 /* Create the event FIFO */
752 ret
= kfifo_alloc(&priv
->event_fifo
, sizeof(u32
) * 16, GFP_KERNEL
);
754 pr_err("Out of memory allocating event FIFO buffer\n");
759 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
764 static void lbs_free_adapter(struct lbs_private
*priv
)
766 lbs_deb_enter(LBS_DEB_MAIN
);
768 lbs_free_cmd_buffer(priv
);
769 kfifo_free(&priv
->event_fifo
);
770 del_timer(&priv
->command_timer
);
771 del_timer(&priv
->auto_deepsleep_timer
);
773 lbs_deb_leave(LBS_DEB_MAIN
);
776 static const struct net_device_ops lbs_netdev_ops
= {
777 .ndo_open
= lbs_dev_open
,
778 .ndo_stop
= lbs_eth_stop
,
779 .ndo_start_xmit
= lbs_hard_start_xmit
,
780 .ndo_set_mac_address
= lbs_set_mac_address
,
781 .ndo_set_multicast_list
= lbs_set_multicast_list
,
782 .ndo_change_mtu
= eth_change_mtu
,
783 .ndo_validate_addr
= eth_validate_addr
,
787 * lbs_add_card - adds the card. It will probe the
788 * card, allocate the lbs_priv and initialize the device.
790 * @card: A pointer to card
791 * @dmdev: A pointer to &struct device
792 * returns: A pointer to &struct lbs_private structure
794 struct lbs_private
*lbs_add_card(void *card
, struct device
*dmdev
)
796 struct net_device
*dev
;
797 struct wireless_dev
*wdev
;
798 struct lbs_private
*priv
= NULL
;
800 lbs_deb_enter(LBS_DEB_MAIN
);
802 /* Allocate an Ethernet device and register it */
803 wdev
= lbs_cfg_alloc(dmdev
);
805 pr_err("cfg80211 init failed\n");
809 wdev
->iftype
= NL80211_IFTYPE_STATION
;
810 priv
= wdev_priv(wdev
);
813 if (lbs_init_adapter(priv
)) {
814 pr_err("failed to initialize adapter structure\n");
818 dev
= alloc_netdev(0, "wlan%d", ether_setup
);
820 dev_err(dmdev
, "no memory for network device instance\n");
824 dev
->ieee80211_ptr
= wdev
;
826 SET_NETDEV_DEV(dev
, dmdev
);
830 dev
->netdev_ops
= &lbs_netdev_ops
;
831 dev
->watchdog_timeo
= 5 * HZ
;
832 dev
->ethtool_ops
= &lbs_ethtool_ops
;
833 dev
->flags
|= IFF_BROADCAST
| IFF_MULTICAST
;
837 strcpy(dev
->name
, "wlan%d");
839 lbs_deb_thread("Starting main thread...\n");
840 init_waitqueue_head(&priv
->waitq
);
841 priv
->main_thread
= kthread_run(lbs_thread
, dev
, "lbs_main");
842 if (IS_ERR(priv
->main_thread
)) {
843 lbs_deb_thread("Error creating main thread.\n");
847 priv
->work_thread
= create_singlethread_workqueue("lbs_worker");
848 INIT_WORK(&priv
->mcast_work
, lbs_set_mcast_worker
);
850 priv
->wol_criteria
= EHS_REMOVE_WAKEUP
;
851 priv
->wol_gpio
= 0xff;
853 priv
->ehs_remove_supported
= true;
861 lbs_free_adapter(priv
);
869 lbs_deb_leave_args(LBS_DEB_MAIN
, "priv %p", priv
);
872 EXPORT_SYMBOL_GPL(lbs_add_card
);
875 void lbs_remove_card(struct lbs_private
*priv
)
877 struct net_device
*dev
= priv
->dev
;
879 lbs_deb_enter(LBS_DEB_MAIN
);
881 lbs_remove_mesh(priv
);
882 lbs_scan_deinit(priv
);
886 cancel_work_sync(&priv
->mcast_work
);
888 /* worker thread destruction blocks on the in-flight command which
889 * should have been cleared already in lbs_stop_card().
891 lbs_deb_main("destroying worker thread\n");
892 destroy_workqueue(priv
->work_thread
);
893 lbs_deb_main("done destroying worker thread\n");
895 if (priv
->psmode
== LBS802_11POWERMODEMAX_PSP
) {
896 priv
->psmode
= LBS802_11POWERMODECAM
;
897 lbs_set_ps_mode(priv
, PS_MODE_ACTION_EXIT_PS
, true);
900 if (priv
->is_deep_sleep
) {
901 priv
->is_deep_sleep
= 0;
902 wake_up_interruptible(&priv
->ds_awake_q
);
905 priv
->is_host_sleep_configured
= 0;
906 priv
->is_host_sleep_activated
= 0;
907 wake_up_interruptible(&priv
->host_sleep_q
);
909 /* Stop the thread servicing the interrupts */
910 priv
->surpriseremoved
= 1;
911 kthread_stop(priv
->main_thread
);
913 lbs_free_adapter(priv
);
917 lbs_deb_leave(LBS_DEB_MAIN
);
919 EXPORT_SYMBOL_GPL(lbs_remove_card
);
922 int lbs_rtap_supported(struct lbs_private
*priv
)
924 if (MRVL_FW_MAJOR_REV(priv
->fwrelease
) == MRVL_FW_V5
)
927 /* newer firmware use a capability mask */
928 return ((MRVL_FW_MAJOR_REV(priv
->fwrelease
) >= MRVL_FW_V10
) &&
929 (priv
->fwcapinfo
& MESH_CAPINFO_ENABLE_MASK
));
933 int lbs_start_card(struct lbs_private
*priv
)
935 struct net_device
*dev
= priv
->dev
;
938 lbs_deb_enter(LBS_DEB_MAIN
);
940 /* poke the firmware */
941 ret
= lbs_setup_firmware(priv
);
945 if (lbs_cfg_register(priv
)) {
946 pr_err("cannot register device\n");
950 lbs_update_channel(priv
);
952 if (!lbs_disablemesh
)
955 pr_info("%s: mesh disabled\n", dev
->name
);
957 lbs_debugfs_init_one(priv
, dev
);
959 netdev_info(dev
, "Marvell WLAN 802.11 adapter\n");
964 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
967 EXPORT_SYMBOL_GPL(lbs_start_card
);
970 void lbs_stop_card(struct lbs_private
*priv
)
972 struct net_device
*dev
;
973 struct cmd_ctrl_node
*cmdnode
;
976 lbs_deb_enter(LBS_DEB_MAIN
);
982 netif_stop_queue(dev
);
983 netif_carrier_off(dev
);
985 lbs_debugfs_remove_one(priv
);
986 lbs_deinit_mesh(priv
);
988 /* Delete the timeout of the currently processing command */
989 del_timer_sync(&priv
->command_timer
);
990 del_timer_sync(&priv
->auto_deepsleep_timer
);
992 /* Flush pending command nodes */
993 spin_lock_irqsave(&priv
->driver_lock
, flags
);
994 lbs_deb_main("clearing pending commands\n");
995 list_for_each_entry(cmdnode
, &priv
->cmdpendingq
, list
) {
996 cmdnode
->result
= -ENOENT
;
997 cmdnode
->cmdwaitqwoken
= 1;
998 wake_up_interruptible(&cmdnode
->cmdwait_q
);
1001 /* Flush the command the card is currently processing */
1002 if (priv
->cur_cmd
) {
1003 lbs_deb_main("clearing current command\n");
1004 priv
->cur_cmd
->result
= -ENOENT
;
1005 priv
->cur_cmd
->cmdwaitqwoken
= 1;
1006 wake_up_interruptible(&priv
->cur_cmd
->cmdwait_q
);
1008 lbs_deb_main("done clearing commands\n");
1009 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1011 unregister_netdev(dev
);
1014 lbs_deb_leave(LBS_DEB_MAIN
);
1016 EXPORT_SYMBOL_GPL(lbs_stop_card
);
1019 void lbs_queue_event(struct lbs_private
*priv
, u32 event
)
1021 unsigned long flags
;
1023 lbs_deb_enter(LBS_DEB_THREAD
);
1024 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1026 if (priv
->psstate
== PS_STATE_SLEEP
)
1027 priv
->psstate
= PS_STATE_AWAKE
;
1029 kfifo_in(&priv
->event_fifo
, (unsigned char *) &event
, sizeof(u32
));
1031 wake_up_interruptible(&priv
->waitq
);
1033 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1034 lbs_deb_leave(LBS_DEB_THREAD
);
1036 EXPORT_SYMBOL_GPL(lbs_queue_event
);
1038 void lbs_notify_command_response(struct lbs_private
*priv
, u8 resp_idx
)
1040 lbs_deb_enter(LBS_DEB_THREAD
);
1042 if (priv
->psstate
== PS_STATE_SLEEP
)
1043 priv
->psstate
= PS_STATE_AWAKE
;
1045 /* Swap buffers by flipping the response index */
1046 BUG_ON(resp_idx
> 1);
1047 priv
->resp_idx
= resp_idx
;
1049 wake_up_interruptible(&priv
->waitq
);
1051 lbs_deb_leave(LBS_DEB_THREAD
);
1053 EXPORT_SYMBOL_GPL(lbs_notify_command_response
);
1056 * lbs_get_firmware - Retrieves two-stage firmware
1058 * @dev: A pointer to &device structure
1059 * @user_helper: User-defined helper firmware file
1060 * @user_mainfw: User-defined main firmware file
1061 * @card_model: Bus-specific card model ID used to filter firmware table
1063 * @fw_table: Table of firmware file names and device model numbers
1064 * terminated by an entry with a NULL helper name
1065 * @helper: On success, the helper firmware; caller must free
1066 * @mainfw: On success, the main firmware; caller must free
1068 * returns: 0 on success, non-zero on failure
1070 int lbs_get_firmware(struct device
*dev
, const char *user_helper
,
1071 const char *user_mainfw
, u32 card_model
,
1072 const struct lbs_fw_table
*fw_table
,
1073 const struct firmware
**helper
,
1074 const struct firmware
**mainfw
)
1076 const struct lbs_fw_table
*iter
;
1079 BUG_ON(helper
== NULL
);
1080 BUG_ON(mainfw
== NULL
);
1082 /* Try user-specified firmware first */
1084 ret
= request_firmware(helper
, user_helper
, dev
);
1086 dev_err(dev
, "couldn't find helper firmware %s\n",
1092 ret
= request_firmware(mainfw
, user_mainfw
, dev
);
1094 dev_err(dev
, "couldn't find main firmware %s\n",
1100 if (*helper
&& *mainfw
)
1103 /* Otherwise search for firmware to use. If neither the helper or
1104 * the main firmware were specified by the user, then we need to
1105 * make sure that found helper & main are from the same entry in
1109 while (iter
&& iter
->helper
) {
1110 if (iter
->model
!= card_model
)
1113 if (*helper
== NULL
) {
1114 ret
= request_firmware(helper
, iter
->helper
, dev
);
1118 /* If the device has one-stage firmware (ie cf8305) and
1119 * we've got it then we don't need to bother with the
1122 if (iter
->fwname
== NULL
)
1126 if (*mainfw
== NULL
) {
1127 ret
= request_firmware(mainfw
, iter
->fwname
, dev
);
1128 if (ret
&& !user_helper
) {
1129 /* Clear the helper if it wasn't user-specified
1130 * and the main firmware load failed, to ensure
1131 * we don't have mismatched firmware pairs.
1133 release_firmware(*helper
);
1138 if (*helper
&& *mainfw
)
1148 release_firmware(*helper
);
1152 release_firmware(*mainfw
);
1158 EXPORT_SYMBOL_GPL(lbs_get_firmware
);
1160 static int __init
lbs_init_module(void)
1162 lbs_deb_enter(LBS_DEB_MAIN
);
1163 memset(&confirm_sleep
, 0, sizeof(confirm_sleep
));
1164 confirm_sleep
.hdr
.command
= cpu_to_le16(CMD_802_11_PS_MODE
);
1165 confirm_sleep
.hdr
.size
= cpu_to_le16(sizeof(confirm_sleep
));
1166 confirm_sleep
.action
= cpu_to_le16(PS_MODE_ACTION_SLEEP_CONFIRMED
);
1168 lbs_deb_leave(LBS_DEB_MAIN
);
1172 static void __exit
lbs_exit_module(void)
1174 lbs_deb_enter(LBS_DEB_MAIN
);
1175 lbs_debugfs_remove();
1176 lbs_deb_leave(LBS_DEB_MAIN
);
1179 module_init(lbs_init_module
);
1180 module_exit(lbs_exit_module
);
1182 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1183 MODULE_AUTHOR("Marvell International Ltd.");
1184 MODULE_LICENSE("GPL");