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/stddef.h>
15 #include <linux/ieee80211.h>
16 #include <net/iw_handler.h>
17 #include <net/cfg80211.h>
29 #define DRIVER_RELEASE_VERSION "323.p0"
30 const char lbs_driver_version
[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
37 /* Module parameters */
38 unsigned int lbs_debug
;
39 EXPORT_SYMBOL_GPL(lbs_debug
);
40 module_param_named(libertas_debug
, lbs_debug
, int, 0644);
43 /* This global structure is used to send the confirm_sleep command as
44 * fast as possible down to the firmware. */
45 struct cmd_confirm_sleep confirm_sleep
;
49 * the table to keep region code
51 u16 lbs_region_code_to_index
[MRVDRV_MAX_REGION_CODE
] =
52 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
55 * FW rate table. FW refers to rates by their index in this table, not by the
56 * rate value itself. Values of 0x00 are
59 static u8 fw_data_rates
[MAX_RATES
] =
60 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
61 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
65 * @brief use index to get the data rate
67 * @param idx The index of data rate
68 * @return data rate or 0
70 u32
lbs_fw_index_to_data_rate(u8 idx
)
72 if (idx
>= sizeof(fw_data_rates
))
74 return fw_data_rates
[idx
];
78 * @brief use rate to get the index
80 * @param rate data rate
83 u8
lbs_data_rate_to_fw_index(u32 rate
)
90 for (i
= 0; i
< sizeof(fw_data_rates
); i
++) {
91 if (rate
== fw_data_rates
[i
])
98 static int lbs_add_rtap(struct lbs_private
*priv
);
99 static void lbs_remove_rtap(struct lbs_private
*priv
);
103 * Get function for sysfs attribute rtap
105 static ssize_t
lbs_rtap_get(struct device
*dev
,
106 struct device_attribute
*attr
, char * buf
)
108 struct lbs_private
*priv
= to_net_dev(dev
)->ml_priv
;
109 return snprintf(buf
, 5, "0x%X\n", priv
->monitormode
);
113 * Set function for sysfs attribute rtap
115 static ssize_t
lbs_rtap_set(struct device
*dev
,
116 struct device_attribute
*attr
, const char * buf
, size_t count
)
119 struct lbs_private
*priv
= to_net_dev(dev
)->ml_priv
;
121 sscanf(buf
, "%x", &monitor_mode
);
123 if (priv
->monitormode
== monitor_mode
)
125 if (!priv
->monitormode
) {
126 if (priv
->infra_open
|| lbs_mesh_open(priv
))
128 if (priv
->mode
== IW_MODE_INFRA
)
129 lbs_cmd_80211_deauthenticate(priv
,
130 priv
->curbssparams
.bssid
,
131 WLAN_REASON_DEAUTH_LEAVING
);
132 else if (priv
->mode
== IW_MODE_ADHOC
)
133 lbs_adhoc_stop(priv
);
136 priv
->monitormode
= monitor_mode
;
138 if (!priv
->monitormode
)
140 priv
->monitormode
= 0;
141 lbs_remove_rtap(priv
);
143 if (priv
->currenttxskb
) {
144 dev_kfree_skb_any(priv
->currenttxskb
);
145 priv
->currenttxskb
= NULL
;
148 /* Wake queues, command thread, etc. */
149 lbs_host_to_card_done(priv
);
152 lbs_prepare_and_send_command(priv
,
153 CMD_802_11_MONITOR_MODE
, CMD_ACT_SET
,
154 CMD_OPTION_WAITFORRSP
, 0, &priv
->monitormode
);
159 * lbs_rtap attribute to be exported per ethX interface
160 * through sysfs (/sys/class/net/ethX/lbs_rtap)
162 static DEVICE_ATTR(lbs_rtap
, 0644, lbs_rtap_get
, lbs_rtap_set
);
165 * @brief This function opens the ethX interface
167 * @param dev A pointer to net_device structure
168 * @return 0 or -EBUSY if monitor mode active
170 static int lbs_dev_open(struct net_device
*dev
)
172 struct lbs_private
*priv
= dev
->ml_priv
;
175 lbs_deb_enter(LBS_DEB_NET
);
177 spin_lock_irq(&priv
->driver_lock
);
179 if (priv
->monitormode
) {
184 priv
->infra_open
= 1;
186 if (priv
->connect_status
== LBS_CONNECTED
)
187 netif_carrier_on(dev
);
189 netif_carrier_off(dev
);
191 if (!priv
->tx_pending_len
)
192 netif_wake_queue(dev
);
195 spin_unlock_irq(&priv
->driver_lock
);
196 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
201 * @brief This function closes the ethX interface
203 * @param dev A pointer to net_device structure
206 static int lbs_eth_stop(struct net_device
*dev
)
208 struct lbs_private
*priv
= dev
->ml_priv
;
210 lbs_deb_enter(LBS_DEB_NET
);
212 spin_lock_irq(&priv
->driver_lock
);
213 priv
->infra_open
= 0;
214 netif_stop_queue(dev
);
215 spin_unlock_irq(&priv
->driver_lock
);
217 schedule_work(&priv
->mcast_work
);
219 lbs_deb_leave(LBS_DEB_NET
);
223 static void lbs_tx_timeout(struct net_device
*dev
)
225 struct lbs_private
*priv
= dev
->ml_priv
;
227 lbs_deb_enter(LBS_DEB_TX
);
229 lbs_pr_err("tx watch dog timeout\n");
231 dev
->trans_start
= jiffies
;
233 if (priv
->currenttxskb
)
234 lbs_send_tx_feedback(priv
, 0);
236 /* XX: Shouldn't we also call into the hw-specific driver
237 to kick it somehow? */
238 lbs_host_to_card_done(priv
);
240 /* More often than not, this actually happens because the
241 firmware has crapped itself -- rather than just a very
242 busy medium. So send a harmless command, and if/when
243 _that_ times out, we'll kick it in the head. */
244 lbs_prepare_and_send_command(priv
, CMD_802_11_RSSI
, 0,
247 lbs_deb_leave(LBS_DEB_TX
);
250 void lbs_host_to_card_done(struct lbs_private
*priv
)
254 lbs_deb_enter(LBS_DEB_THREAD
);
256 spin_lock_irqsave(&priv
->driver_lock
, flags
);
258 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
260 /* Wake main thread if commands are pending */
261 if (!priv
->cur_cmd
|| priv
->tx_pending_len
> 0) {
262 if (!priv
->wakeup_dev_required
)
263 wake_up_interruptible(&priv
->waitq
);
266 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
267 lbs_deb_leave(LBS_DEB_THREAD
);
269 EXPORT_SYMBOL_GPL(lbs_host_to_card_done
);
271 int lbs_set_mac_address(struct net_device
*dev
, void *addr
)
274 struct lbs_private
*priv
= dev
->ml_priv
;
275 struct sockaddr
*phwaddr
= addr
;
276 struct cmd_ds_802_11_mac_address cmd
;
278 lbs_deb_enter(LBS_DEB_NET
);
280 /* In case it was called from the mesh device */
283 cmd
.hdr
.size
= cpu_to_le16(sizeof(cmd
));
284 cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
285 memcpy(cmd
.macadd
, phwaddr
->sa_data
, ETH_ALEN
);
287 ret
= lbs_cmd_with_response(priv
, CMD_802_11_MAC_ADDRESS
, &cmd
);
289 lbs_deb_net("set MAC address failed\n");
293 memcpy(priv
->current_addr
, phwaddr
->sa_data
, ETH_ALEN
);
294 memcpy(dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
296 memcpy(priv
->mesh_dev
->dev_addr
, phwaddr
->sa_data
, ETH_ALEN
);
299 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
304 static inline int mac_in_list(unsigned char *list
, int list_len
,
308 if (!memcmp(list
, mac
, ETH_ALEN
))
317 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr
*cmd
,
318 struct net_device
*dev
, int nr_addrs
)
321 struct dev_mc_list
*mc_list
;
323 if ((dev
->flags
& (IFF_UP
|IFF_MULTICAST
)) != (IFF_UP
|IFF_MULTICAST
))
326 netif_addr_lock_bh(dev
);
327 for (mc_list
= dev
->mc_list
; mc_list
; mc_list
= mc_list
->next
) {
328 if (mac_in_list(cmd
->maclist
, nr_addrs
, mc_list
->dmi_addr
)) {
329 lbs_deb_net("mcast address %s:%pM skipped\n", dev
->name
,
334 if (i
== MRVDRV_MAX_MULTICAST_LIST_SIZE
)
336 memcpy(&cmd
->maclist
[6*i
], mc_list
->dmi_addr
, ETH_ALEN
);
337 lbs_deb_net("mcast address %s:%pM added to filter\n", dev
->name
,
341 netif_addr_unlock_bh(dev
);
348 static void lbs_set_mcast_worker(struct work_struct
*work
)
350 struct lbs_private
*priv
= container_of(work
, struct lbs_private
, mcast_work
);
351 struct cmd_ds_mac_multicast_adr mcast_cmd
;
354 int old_mac_control
= priv
->mac_control
;
356 lbs_deb_enter(LBS_DEB_NET
);
358 dev_flags
= priv
->dev
->flags
;
360 dev_flags
|= priv
->mesh_dev
->flags
;
362 if (dev_flags
& IFF_PROMISC
) {
363 priv
->mac_control
|= CMD_ACT_MAC_PROMISCUOUS_ENABLE
;
364 priv
->mac_control
&= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE
|
365 CMD_ACT_MAC_MULTICAST_ENABLE
);
366 goto out_set_mac_control
;
367 } else if (dev_flags
& IFF_ALLMULTI
) {
369 priv
->mac_control
|= CMD_ACT_MAC_ALL_MULTICAST_ENABLE
;
370 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
371 CMD_ACT_MAC_MULTICAST_ENABLE
);
372 goto out_set_mac_control
;
375 /* Once for priv->dev, again for priv->mesh_dev if it exists */
376 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->dev
, 0);
377 if (nr_addrs
>= 0 && priv
->mesh_dev
)
378 nr_addrs
= lbs_add_mcast_addrs(&mcast_cmd
, priv
->mesh_dev
, nr_addrs
);
383 int size
= offsetof(struct cmd_ds_mac_multicast_adr
,
384 maclist
[6*nr_addrs
]);
386 mcast_cmd
.action
= cpu_to_le16(CMD_ACT_SET
);
387 mcast_cmd
.hdr
.size
= cpu_to_le16(size
);
388 mcast_cmd
.nr_of_adrs
= cpu_to_le16(nr_addrs
);
390 lbs_cmd_async(priv
, CMD_MAC_MULTICAST_ADR
, &mcast_cmd
.hdr
, size
);
392 priv
->mac_control
|= CMD_ACT_MAC_MULTICAST_ENABLE
;
394 priv
->mac_control
&= ~CMD_ACT_MAC_MULTICAST_ENABLE
;
396 priv
->mac_control
&= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE
|
397 CMD_ACT_MAC_ALL_MULTICAST_ENABLE
);
399 if (priv
->mac_control
!= old_mac_control
)
400 lbs_set_mac_control(priv
);
402 lbs_deb_leave(LBS_DEB_NET
);
405 void lbs_set_multicast_list(struct net_device
*dev
)
407 struct lbs_private
*priv
= dev
->ml_priv
;
409 schedule_work(&priv
->mcast_work
);
413 * @brief This function handles the major jobs in the LBS driver.
414 * It handles all events generated by firmware, RX data received
415 * from firmware and TX data sent from kernel.
417 * @param data A pointer to lbs_thread structure
420 static int lbs_thread(void *data
)
422 struct net_device
*dev
= data
;
423 struct lbs_private
*priv
= dev
->ml_priv
;
426 lbs_deb_enter(LBS_DEB_THREAD
);
428 init_waitqueue_entry(&wait
, current
);
434 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
435 priv
->currenttxskb
, priv
->dnld_sent
);
437 add_wait_queue(&priv
->waitq
, &wait
);
438 set_current_state(TASK_INTERRUPTIBLE
);
439 spin_lock_irq(&priv
->driver_lock
);
441 if (kthread_should_stop())
442 shouldsleep
= 0; /* Bye */
443 else if (priv
->surpriseremoved
)
444 shouldsleep
= 1; /* We need to wait until we're _told_ to die */
445 else if (priv
->psstate
== PS_STATE_SLEEP
)
446 shouldsleep
= 1; /* Sleep mode. Nothing we can do till it wakes */
447 else if (priv
->cmd_timed_out
)
448 shouldsleep
= 0; /* Command timed out. Recover */
449 else if (!priv
->fw_ready
)
450 shouldsleep
= 1; /* Firmware not ready. We're waiting for it */
451 else if (priv
->dnld_sent
)
452 shouldsleep
= 1; /* Something is en route to the device already */
453 else if (priv
->tx_pending_len
> 0)
454 shouldsleep
= 0; /* We've a packet to send */
455 else if (priv
->resp_len
[priv
->resp_idx
])
456 shouldsleep
= 0; /* We have a command response */
457 else if (priv
->cur_cmd
)
458 shouldsleep
= 1; /* Can't send a command; one already running */
459 else if (!list_empty(&priv
->cmdpendingq
) &&
460 !(priv
->wakeup_dev_required
))
461 shouldsleep
= 0; /* We have a command to send */
462 else if (kfifo_len(&priv
->event_fifo
))
463 shouldsleep
= 0; /* We have an event to process */
465 shouldsleep
= 1; /* No command */
468 lbs_deb_thread("sleeping, connect_status %d, "
469 "psmode %d, psstate %d\n",
470 priv
->connect_status
,
471 priv
->psmode
, priv
->psstate
);
472 spin_unlock_irq(&priv
->driver_lock
);
475 spin_unlock_irq(&priv
->driver_lock
);
477 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
478 priv
->currenttxskb
, priv
->dnld_sent
);
480 set_current_state(TASK_RUNNING
);
481 remove_wait_queue(&priv
->waitq
, &wait
);
483 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
484 priv
->currenttxskb
, priv
->dnld_sent
);
486 if (kthread_should_stop()) {
487 lbs_deb_thread("break from main thread\n");
491 if (priv
->surpriseremoved
) {
492 lbs_deb_thread("adapter removed; waiting to die...\n");
496 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
497 priv
->currenttxskb
, priv
->dnld_sent
);
499 /* Process any pending command response */
500 spin_lock_irq(&priv
->driver_lock
);
501 resp_idx
= priv
->resp_idx
;
502 if (priv
->resp_len
[resp_idx
]) {
503 spin_unlock_irq(&priv
->driver_lock
);
504 lbs_process_command_response(priv
,
505 priv
->resp_buf
[resp_idx
],
506 priv
->resp_len
[resp_idx
]);
507 spin_lock_irq(&priv
->driver_lock
);
508 priv
->resp_len
[resp_idx
] = 0;
510 spin_unlock_irq(&priv
->driver_lock
);
512 /* Process hardware events, e.g. card removed, link lost */
513 spin_lock_irq(&priv
->driver_lock
);
514 while (kfifo_len(&priv
->event_fifo
)) {
517 if (kfifo_out(&priv
->event_fifo
,
518 (unsigned char *) &event
, sizeof(event
)) !=
521 spin_unlock_irq(&priv
->driver_lock
);
522 lbs_process_event(priv
, event
);
523 spin_lock_irq(&priv
->driver_lock
);
525 spin_unlock_irq(&priv
->driver_lock
);
527 if (priv
->wakeup_dev_required
) {
528 lbs_deb_thread("Waking up device...\n");
530 if (priv
->exit_deep_sleep(priv
))
531 lbs_deb_thread("Wakeup device failed\n");
535 /* command timeout stuff */
536 if (priv
->cmd_timed_out
&& priv
->cur_cmd
) {
537 struct cmd_ctrl_node
*cmdnode
= priv
->cur_cmd
;
539 lbs_pr_info("Timeout submitting command 0x%04x\n",
540 le16_to_cpu(cmdnode
->cmdbuf
->command
));
541 lbs_complete_command(priv
, cmdnode
, -ETIMEDOUT
);
542 if (priv
->reset_card
)
543 priv
->reset_card(priv
);
545 priv
->cmd_timed_out
= 0;
550 /* Check if we need to confirm Sleep Request received previously */
551 if (priv
->psstate
== PS_STATE_PRE_SLEEP
&&
552 !priv
->dnld_sent
&& !priv
->cur_cmd
) {
553 if (priv
->connect_status
== LBS_CONNECTED
) {
554 lbs_deb_thread("pre-sleep, currenttxskb %p, "
555 "dnld_sent %d, cur_cmd %p\n",
556 priv
->currenttxskb
, priv
->dnld_sent
,
559 lbs_ps_confirm_sleep(priv
);
561 /* workaround for firmware sending
562 * deauth/linkloss event immediately
563 * after sleep request; remove this
564 * after firmware fixes it
566 priv
->psstate
= PS_STATE_AWAKE
;
567 lbs_pr_alert("ignore PS_SleepConfirm in "
568 "non-connected state\n");
572 /* The PS state is changed during processing of Sleep Request
575 if ((priv
->psstate
== PS_STATE_SLEEP
) ||
576 (priv
->psstate
== PS_STATE_PRE_SLEEP
))
579 if (priv
->is_deep_sleep
)
582 /* Execute the next command */
583 if (!priv
->dnld_sent
&& !priv
->cur_cmd
)
584 lbs_execute_next_command(priv
);
586 /* Wake-up command waiters which can't sleep in
587 * lbs_prepare_and_send_command
589 if (!list_empty(&priv
->cmdpendingq
))
590 wake_up_all(&priv
->cmd_pending
);
592 spin_lock_irq(&priv
->driver_lock
);
593 if (!priv
->dnld_sent
&& priv
->tx_pending_len
> 0) {
594 int ret
= priv
->hw_host_to_card(priv
, MVMS_DAT
,
595 priv
->tx_pending_buf
,
596 priv
->tx_pending_len
);
598 lbs_deb_tx("host_to_card failed %d\n", ret
);
599 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
601 priv
->tx_pending_len
= 0;
602 if (!priv
->currenttxskb
) {
603 /* We can wake the queues immediately if we aren't
604 waiting for TX feedback */
605 if (priv
->connect_status
== LBS_CONNECTED
)
606 netif_wake_queue(priv
->dev
);
607 if (priv
->mesh_dev
&&
608 lbs_mesh_connected(priv
))
609 netif_wake_queue(priv
->mesh_dev
);
612 spin_unlock_irq(&priv
->driver_lock
);
615 del_timer(&priv
->command_timer
);
616 del_timer(&priv
->auto_deepsleep_timer
);
617 wake_up_all(&priv
->cmd_pending
);
619 lbs_deb_leave(LBS_DEB_THREAD
);
623 static int lbs_suspend_callback(struct lbs_private
*priv
, unsigned long dummy
,
624 struct cmd_header
*cmd
)
626 lbs_deb_enter(LBS_DEB_FW
);
628 netif_device_detach(priv
->dev
);
630 netif_device_detach(priv
->mesh_dev
);
633 lbs_deb_leave(LBS_DEB_FW
);
637 int lbs_suspend(struct lbs_private
*priv
)
639 struct cmd_header cmd
;
642 lbs_deb_enter(LBS_DEB_FW
);
644 if (priv
->wol_criteria
== 0xffffffff) {
645 lbs_pr_info("Suspend attempt without configuring wake params!\n");
649 memset(&cmd
, 0, sizeof(cmd
));
651 ret
= __lbs_cmd(priv
, CMD_802_11_HOST_SLEEP_ACTIVATE
, &cmd
,
652 sizeof(cmd
), lbs_suspend_callback
, 0);
654 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret
);
656 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
659 EXPORT_SYMBOL_GPL(lbs_suspend
);
661 void lbs_resume(struct lbs_private
*priv
)
663 lbs_deb_enter(LBS_DEB_FW
);
667 /* Firmware doesn't seem to give us RX packets any more
668 until we send it some command. Might as well update */
669 lbs_prepare_and_send_command(priv
, CMD_802_11_RSSI
, 0,
672 netif_device_attach(priv
->dev
);
674 netif_device_attach(priv
->mesh_dev
);
676 lbs_deb_leave(LBS_DEB_FW
);
678 EXPORT_SYMBOL_GPL(lbs_resume
);
681 * @brief This function gets the HW spec from the firmware and sets
682 * some basic parameters.
684 * @param priv A pointer to struct lbs_private structure
687 static int lbs_setup_firmware(struct lbs_private
*priv
)
690 s16 curlevel
= 0, minlevel
= 0, maxlevel
= 0;
692 lbs_deb_enter(LBS_DEB_FW
);
694 /* Read MAC address from firmware */
695 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
696 ret
= lbs_update_hw_spec(priv
);
700 /* Read power levels if available */
701 ret
= lbs_get_tx_power(priv
, &curlevel
, &minlevel
, &maxlevel
);
703 priv
->txpower_cur
= curlevel
;
704 priv
->txpower_min
= minlevel
;
705 priv
->txpower_max
= maxlevel
;
708 lbs_set_mac_control(priv
);
710 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
715 * This function handles the timeout of command sending.
716 * It will re-send the same command again.
718 static void lbs_cmd_timeout_handler(unsigned long data
)
720 struct lbs_private
*priv
= (struct lbs_private
*)data
;
723 lbs_deb_enter(LBS_DEB_CMD
);
724 spin_lock_irqsave(&priv
->driver_lock
, flags
);
729 lbs_pr_info("command 0x%04x timed out\n",
730 le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
));
732 priv
->cmd_timed_out
= 1;
733 wake_up_interruptible(&priv
->waitq
);
735 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
736 lbs_deb_leave(LBS_DEB_CMD
);
740 * This function put the device back to deep sleep mode when timer expires
741 * and no activity (command, event, data etc.) is detected.
743 static void auto_deepsleep_timer_fn(unsigned long data
)
745 struct lbs_private
*priv
= (struct lbs_private
*)data
;
748 lbs_deb_enter(LBS_DEB_CMD
);
750 if (priv
->is_activity_detected
) {
751 priv
->is_activity_detected
= 0;
753 if (priv
->is_auto_deep_sleep_enabled
&&
754 (!priv
->wakeup_dev_required
) &&
755 (priv
->connect_status
!= LBS_CONNECTED
)) {
756 lbs_deb_main("Entering auto deep sleep mode...\n");
757 ret
= lbs_prepare_and_send_command(priv
,
758 CMD_802_11_DEEP_SLEEP
, 0,
761 lbs_pr_err("Enter Deep Sleep command failed\n");
764 mod_timer(&priv
->auto_deepsleep_timer
, jiffies
+
765 (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
766 lbs_deb_leave(LBS_DEB_CMD
);
769 int lbs_enter_auto_deep_sleep(struct lbs_private
*priv
)
771 lbs_deb_enter(LBS_DEB_SDIO
);
773 priv
->is_auto_deep_sleep_enabled
= 1;
774 if (priv
->is_deep_sleep
)
775 priv
->wakeup_dev_required
= 1;
776 mod_timer(&priv
->auto_deepsleep_timer
,
777 jiffies
+ (priv
->auto_deep_sleep_timeout
* HZ
)/1000);
779 lbs_deb_leave(LBS_DEB_SDIO
);
783 int lbs_exit_auto_deep_sleep(struct lbs_private
*priv
)
785 lbs_deb_enter(LBS_DEB_SDIO
);
787 priv
->is_auto_deep_sleep_enabled
= 0;
788 priv
->auto_deep_sleep_timeout
= 0;
789 del_timer(&priv
->auto_deepsleep_timer
);
791 lbs_deb_leave(LBS_DEB_SDIO
);
795 static int lbs_init_adapter(struct lbs_private
*priv
)
800 lbs_deb_enter(LBS_DEB_MAIN
);
802 /* Allocate buffer to store the BSSID list */
803 bufsize
= MAX_NETWORK_COUNT
* sizeof(struct bss_descriptor
);
804 priv
->networks
= kzalloc(bufsize
, GFP_KERNEL
);
805 if (!priv
->networks
) {
806 lbs_pr_err("Out of memory allocating beacons\n");
811 /* Initialize scan result lists */
812 INIT_LIST_HEAD(&priv
->network_free_list
);
813 INIT_LIST_HEAD(&priv
->network_list
);
814 for (i
= 0; i
< MAX_NETWORK_COUNT
; i
++) {
815 list_add_tail(&priv
->networks
[i
].list
,
816 &priv
->network_free_list
);
819 memset(priv
->current_addr
, 0xff, ETH_ALEN
);
821 priv
->connect_status
= LBS_DISCONNECTED
;
822 priv
->secinfo
.auth_mode
= IW_AUTH_ALG_OPEN_SYSTEM
;
823 priv
->mode
= IW_MODE_INFRA
;
824 priv
->channel
= DEFAULT_AD_HOC_CHANNEL
;
825 priv
->mac_control
= CMD_ACT_MAC_RX_ON
| CMD_ACT_MAC_TX_ON
;
827 priv
->enablehwauto
= 1;
828 priv
->psmode
= LBS802_11POWERMODECAM
;
829 priv
->psstate
= PS_STATE_FULL_POWER
;
830 priv
->is_deep_sleep
= 0;
831 priv
->is_auto_deep_sleep_enabled
= 0;
832 priv
->wakeup_dev_required
= 0;
833 init_waitqueue_head(&priv
->ds_awake_q
);
835 mutex_init(&priv
->lock
);
837 setup_timer(&priv
->command_timer
, lbs_cmd_timeout_handler
,
838 (unsigned long)priv
);
839 setup_timer(&priv
->auto_deepsleep_timer
, auto_deepsleep_timer_fn
,
840 (unsigned long)priv
);
842 INIT_LIST_HEAD(&priv
->cmdfreeq
);
843 INIT_LIST_HEAD(&priv
->cmdpendingq
);
845 spin_lock_init(&priv
->driver_lock
);
846 init_waitqueue_head(&priv
->cmd_pending
);
848 /* Allocate the command buffers */
849 if (lbs_allocate_cmd_buffer(priv
)) {
850 lbs_pr_err("Out of memory allocating command buffers\n");
855 priv
->resp_len
[0] = priv
->resp_len
[1] = 0;
857 /* Create the event FIFO */
858 ret
= kfifo_alloc(&priv
->event_fifo
, sizeof(u32
) * 16, GFP_KERNEL
);
860 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
865 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
870 static void lbs_free_adapter(struct lbs_private
*priv
)
872 lbs_deb_enter(LBS_DEB_MAIN
);
874 lbs_free_cmd_buffer(priv
);
875 kfifo_free(&priv
->event_fifo
);
876 del_timer(&priv
->command_timer
);
877 del_timer(&priv
->auto_deepsleep_timer
);
878 kfree(priv
->networks
);
879 priv
->networks
= NULL
;
881 lbs_deb_leave(LBS_DEB_MAIN
);
884 static const struct net_device_ops lbs_netdev_ops
= {
885 .ndo_open
= lbs_dev_open
,
886 .ndo_stop
= lbs_eth_stop
,
887 .ndo_start_xmit
= lbs_hard_start_xmit
,
888 .ndo_set_mac_address
= lbs_set_mac_address
,
889 .ndo_tx_timeout
= lbs_tx_timeout
,
890 .ndo_set_multicast_list
= lbs_set_multicast_list
,
891 .ndo_change_mtu
= eth_change_mtu
,
892 .ndo_validate_addr
= eth_validate_addr
,
896 * @brief This function adds the card. it will probe the
897 * card, allocate the lbs_priv and initialize the device.
899 * @param card A pointer to card
900 * @return A pointer to struct lbs_private structure
902 struct lbs_private
*lbs_add_card(void *card
, struct device
*dmdev
)
904 struct net_device
*dev
;
905 struct wireless_dev
*wdev
;
906 struct lbs_private
*priv
= NULL
;
908 lbs_deb_enter(LBS_DEB_MAIN
);
910 /* Allocate an Ethernet device and register it */
911 wdev
= lbs_cfg_alloc(dmdev
);
913 lbs_pr_err("cfg80211 init failed\n");
917 wdev
->iftype
= NL80211_IFTYPE_STATION
;
918 priv
= wdev_priv(wdev
);
921 if (lbs_init_adapter(priv
)) {
922 lbs_pr_err("failed to initialize adapter structure.\n");
926 //TODO? dev = alloc_netdev_mq(0, "wlan%d", ether_setup, IWM_TX_QUEUES);
927 dev
= alloc_netdev(0, "wlan%d", ether_setup
);
929 dev_err(dmdev
, "no memory for network device instance\n");
933 dev
->ieee80211_ptr
= wdev
;
935 SET_NETDEV_DEV(dev
, dmdev
);
939 dev
->netdev_ops
= &lbs_netdev_ops
;
940 dev
->watchdog_timeo
= 5 * HZ
;
941 dev
->ethtool_ops
= &lbs_ethtool_ops
;
943 dev
->wireless_handlers
= &lbs_handler_def
;
945 dev
->flags
|= IFF_BROADCAST
| IFF_MULTICAST
;
948 // TODO: kzalloc + iwm_init_default_profile(iwm, iwm->umac_profile); ??
952 priv
->infra_open
= 0;
955 priv
->rtap_net_dev
= NULL
;
956 strcpy(dev
->name
, "wlan%d");
958 lbs_deb_thread("Starting main thread...\n");
959 init_waitqueue_head(&priv
->waitq
);
960 priv
->main_thread
= kthread_run(lbs_thread
, dev
, "lbs_main");
961 if (IS_ERR(priv
->main_thread
)) {
962 lbs_deb_thread("Error creating main thread.\n");
966 priv
->work_thread
= create_singlethread_workqueue("lbs_worker");
967 INIT_DELAYED_WORK(&priv
->assoc_work
, lbs_association_worker
);
968 INIT_DELAYED_WORK(&priv
->scan_work
, lbs_scan_worker
);
969 INIT_WORK(&priv
->mcast_work
, lbs_set_mcast_worker
);
971 priv
->wol_criteria
= 0xffffffff;
972 priv
->wol_gpio
= 0xff;
980 lbs_free_adapter(priv
);
988 lbs_deb_leave_args(LBS_DEB_MAIN
, "priv %p", priv
);
991 EXPORT_SYMBOL_GPL(lbs_add_card
);
994 void lbs_remove_card(struct lbs_private
*priv
)
996 struct net_device
*dev
= priv
->dev
;
998 lbs_deb_enter(LBS_DEB_MAIN
);
1000 lbs_remove_mesh(priv
);
1001 lbs_remove_rtap(priv
);
1005 cancel_delayed_work_sync(&priv
->scan_work
);
1006 cancel_delayed_work_sync(&priv
->assoc_work
);
1007 cancel_work_sync(&priv
->mcast_work
);
1009 /* worker thread destruction blocks on the in-flight command which
1010 * should have been cleared already in lbs_stop_card().
1012 lbs_deb_main("destroying worker thread\n");
1013 destroy_workqueue(priv
->work_thread
);
1014 lbs_deb_main("done destroying worker thread\n");
1016 if (priv
->psmode
== LBS802_11POWERMODEMAX_PSP
) {
1017 priv
->psmode
= LBS802_11POWERMODECAM
;
1018 lbs_ps_wakeup(priv
, CMD_OPTION_WAITFORRSP
);
1021 lbs_send_disconnect_notification(priv
);
1023 if (priv
->is_deep_sleep
) {
1024 priv
->is_deep_sleep
= 0;
1025 wake_up_interruptible(&priv
->ds_awake_q
);
1028 /* Stop the thread servicing the interrupts */
1029 priv
->surpriseremoved
= 1;
1030 kthread_stop(priv
->main_thread
);
1032 lbs_free_adapter(priv
);
1038 lbs_deb_leave(LBS_DEB_MAIN
);
1040 EXPORT_SYMBOL_GPL(lbs_remove_card
);
1043 static int lbs_rtap_supported(struct lbs_private
*priv
)
1045 if (MRVL_FW_MAJOR_REV(priv
->fwrelease
) == MRVL_FW_V5
)
1048 /* newer firmware use a capability mask */
1049 return ((MRVL_FW_MAJOR_REV(priv
->fwrelease
) >= MRVL_FW_V10
) &&
1050 (priv
->fwcapinfo
& MESH_CAPINFO_ENABLE_MASK
));
1054 int lbs_start_card(struct lbs_private
*priv
)
1056 struct net_device
*dev
= priv
->dev
;
1059 lbs_deb_enter(LBS_DEB_MAIN
);
1061 /* poke the firmware */
1062 ret
= lbs_setup_firmware(priv
);
1066 if (lbs_cfg_register(priv
)) {
1067 lbs_pr_err("cannot register device\n");
1071 lbs_update_channel(priv
);
1073 lbs_init_mesh(priv
);
1076 * While rtap isn't related to mesh, only mesh-enabled
1077 * firmware implements the rtap functionality via
1078 * CMD_802_11_MONITOR_MODE.
1080 if (lbs_rtap_supported(priv
)) {
1081 if (device_create_file(&dev
->dev
, &dev_attr_lbs_rtap
))
1082 lbs_pr_err("cannot register lbs_rtap attribute\n");
1085 lbs_debugfs_init_one(priv
, dev
);
1087 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev
->name
);
1092 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
1095 EXPORT_SYMBOL_GPL(lbs_start_card
);
1098 void lbs_stop_card(struct lbs_private
*priv
)
1100 struct net_device
*dev
;
1101 struct cmd_ctrl_node
*cmdnode
;
1102 unsigned long flags
;
1104 lbs_deb_enter(LBS_DEB_MAIN
);
1110 netif_stop_queue(dev
);
1111 netif_carrier_off(dev
);
1113 lbs_debugfs_remove_one(priv
);
1114 lbs_deinit_mesh(priv
);
1116 if (lbs_rtap_supported(priv
))
1117 device_remove_file(&dev
->dev
, &dev_attr_lbs_rtap
);
1119 /* Delete the timeout of the currently processing command */
1120 del_timer_sync(&priv
->command_timer
);
1121 del_timer_sync(&priv
->auto_deepsleep_timer
);
1123 /* Flush pending command nodes */
1124 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1125 lbs_deb_main("clearing pending commands\n");
1126 list_for_each_entry(cmdnode
, &priv
->cmdpendingq
, list
) {
1127 cmdnode
->result
= -ENOENT
;
1128 cmdnode
->cmdwaitqwoken
= 1;
1129 wake_up_interruptible(&cmdnode
->cmdwait_q
);
1132 /* Flush the command the card is currently processing */
1133 if (priv
->cur_cmd
) {
1134 lbs_deb_main("clearing current command\n");
1135 priv
->cur_cmd
->result
= -ENOENT
;
1136 priv
->cur_cmd
->cmdwaitqwoken
= 1;
1137 wake_up_interruptible(&priv
->cur_cmd
->cmdwait_q
);
1139 lbs_deb_main("done clearing commands\n");
1140 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1142 unregister_netdev(dev
);
1145 lbs_deb_leave(LBS_DEB_MAIN
);
1147 EXPORT_SYMBOL_GPL(lbs_stop_card
);
1150 void lbs_queue_event(struct lbs_private
*priv
, u32 event
)
1152 unsigned long flags
;
1154 lbs_deb_enter(LBS_DEB_THREAD
);
1155 spin_lock_irqsave(&priv
->driver_lock
, flags
);
1157 if (priv
->psstate
== PS_STATE_SLEEP
)
1158 priv
->psstate
= PS_STATE_AWAKE
;
1160 kfifo_in(&priv
->event_fifo
, (unsigned char *) &event
, sizeof(u32
));
1162 wake_up_interruptible(&priv
->waitq
);
1164 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
1165 lbs_deb_leave(LBS_DEB_THREAD
);
1167 EXPORT_SYMBOL_GPL(lbs_queue_event
);
1169 void lbs_notify_command_response(struct lbs_private
*priv
, u8 resp_idx
)
1171 lbs_deb_enter(LBS_DEB_THREAD
);
1173 if (priv
->psstate
== PS_STATE_SLEEP
)
1174 priv
->psstate
= PS_STATE_AWAKE
;
1176 /* Swap buffers by flipping the response index */
1177 BUG_ON(resp_idx
> 1);
1178 priv
->resp_idx
= resp_idx
;
1180 wake_up_interruptible(&priv
->waitq
);
1182 lbs_deb_leave(LBS_DEB_THREAD
);
1184 EXPORT_SYMBOL_GPL(lbs_notify_command_response
);
1186 static int __init
lbs_init_module(void)
1188 lbs_deb_enter(LBS_DEB_MAIN
);
1189 memset(&confirm_sleep
, 0, sizeof(confirm_sleep
));
1190 confirm_sleep
.hdr
.command
= cpu_to_le16(CMD_802_11_PS_MODE
);
1191 confirm_sleep
.hdr
.size
= cpu_to_le16(sizeof(confirm_sleep
));
1192 confirm_sleep
.action
= cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED
);
1194 lbs_deb_leave(LBS_DEB_MAIN
);
1198 static void __exit
lbs_exit_module(void)
1200 lbs_deb_enter(LBS_DEB_MAIN
);
1201 lbs_debugfs_remove();
1202 lbs_deb_leave(LBS_DEB_MAIN
);
1206 * rtap interface support fuctions
1209 static int lbs_rtap_open(struct net_device
*dev
)
1211 /* Yes, _stop_ the queue. Because we don't support injection */
1212 lbs_deb_enter(LBS_DEB_MAIN
);
1213 netif_carrier_off(dev
);
1214 netif_stop_queue(dev
);
1215 lbs_deb_leave(LBS_DEB_LEAVE
);
1219 static int lbs_rtap_stop(struct net_device
*dev
)
1221 lbs_deb_enter(LBS_DEB_MAIN
);
1222 lbs_deb_leave(LBS_DEB_MAIN
);
1226 static netdev_tx_t
lbs_rtap_hard_start_xmit(struct sk_buff
*skb
,
1227 struct net_device
*dev
)
1229 netif_stop_queue(dev
);
1230 return NETDEV_TX_BUSY
;
1233 static void lbs_remove_rtap(struct lbs_private
*priv
)
1235 lbs_deb_enter(LBS_DEB_MAIN
);
1236 if (priv
->rtap_net_dev
== NULL
)
1238 unregister_netdev(priv
->rtap_net_dev
);
1239 free_netdev(priv
->rtap_net_dev
);
1240 priv
->rtap_net_dev
= NULL
;
1242 lbs_deb_leave(LBS_DEB_MAIN
);
1245 static const struct net_device_ops rtap_netdev_ops
= {
1246 .ndo_open
= lbs_rtap_open
,
1247 .ndo_stop
= lbs_rtap_stop
,
1248 .ndo_start_xmit
= lbs_rtap_hard_start_xmit
,
1251 static int lbs_add_rtap(struct lbs_private
*priv
)
1254 struct net_device
*rtap_dev
;
1256 lbs_deb_enter(LBS_DEB_MAIN
);
1257 if (priv
->rtap_net_dev
) {
1262 rtap_dev
= alloc_netdev(0, "rtap%d", ether_setup
);
1263 if (rtap_dev
== NULL
) {
1268 memcpy(rtap_dev
->dev_addr
, priv
->current_addr
, ETH_ALEN
);
1269 rtap_dev
->type
= ARPHRD_IEEE80211_RADIOTAP
;
1270 rtap_dev
->netdev_ops
= &rtap_netdev_ops
;
1271 rtap_dev
->ml_priv
= priv
;
1272 SET_NETDEV_DEV(rtap_dev
, priv
->dev
->dev
.parent
);
1274 ret
= register_netdev(rtap_dev
);
1276 free_netdev(rtap_dev
);
1279 priv
->rtap_net_dev
= rtap_dev
;
1282 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
1286 module_init(lbs_init_module
);
1287 module_exit(lbs_exit_module
);
1289 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1290 MODULE_AUTHOR("Marvell International Ltd.");
1291 MODULE_LICENSE("GPL");