2 * Marvell Wireless LAN device driver: major functions
4 * Copyright (C) 2011, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
27 const char driver_version
[] = "mwifiex " VERSION
" (%s) ";
30 * This function registers the device and performs all the necessary
33 * The following initialization operations are performed -
34 * - Allocate adapter structure
35 * - Save interface specific operations table in adapter
36 * - Call interface specific initialization routine
37 * - Allocate private structures
38 * - Set default adapter structure parameters
41 * In case of any errors during inittialization, this function also ensures
42 * proper cleanup before exiting.
44 static int mwifiex_register(void *card
, struct mwifiex_if_ops
*if_ops
,
47 struct mwifiex_adapter
*adapter
;
50 adapter
= kzalloc(sizeof(struct mwifiex_adapter
), GFP_KERNEL
);
57 /* Save interface specific operations in adapter */
58 memmove(&adapter
->if_ops
, if_ops
, sizeof(struct mwifiex_if_ops
));
60 /* card specific initialization has been deferred until now .. */
61 if (adapter
->if_ops
.init_if
)
62 if (adapter
->if_ops
.init_if(adapter
))
65 adapter
->priv_num
= 0;
67 for (i
= 0; i
< MWIFIEX_MAX_BSS_NUM
; i
++) {
68 /* Allocate memory for private structure */
70 kzalloc(sizeof(struct mwifiex_private
), GFP_KERNEL
);
71 if (!adapter
->priv
[i
])
74 adapter
->priv
[i
]->adapter
= adapter
;
77 mwifiex_init_lock_list(adapter
);
79 init_timer(&adapter
->cmd_timer
);
80 adapter
->cmd_timer
.function
= mwifiex_cmd_timeout_func
;
81 adapter
->cmd_timer
.data
= (unsigned long) adapter
;
86 dev_dbg(adapter
->dev
, "info: leave mwifiex_register with error\n");
88 for (i
= 0; i
< adapter
->priv_num
; i
++)
89 kfree(adapter
->priv
[i
]);
97 * This function unregisters the device and performs all the necessary
100 * The following cleanup operations are performed -
102 * - Free beacon buffers
103 * - Free private structures
104 * - Free adapter structure
106 static int mwifiex_unregister(struct mwifiex_adapter
*adapter
)
110 del_timer(&adapter
->cmd_timer
);
112 /* Free private structures */
113 for (i
= 0; i
< adapter
->priv_num
; i
++) {
114 if (adapter
->priv
[i
]) {
115 mwifiex_free_curr_bcn(adapter
->priv
[i
]);
116 kfree(adapter
->priv
[i
]);
127 * This function is the main procedure of the driver and handles various driver
128 * operations. It runs in a loop and provides the core functionalities.
130 * The main responsibilities of this function are -
131 * - Ensure concurrency control
132 * - Handle pending interrupts and call interrupt handlers
133 * - Wake up the card if required
134 * - Handle command responses and call response handlers
135 * - Handle events and call event handlers
136 * - Execute pending commands
137 * - Transmit pending data packets
139 int mwifiex_main_process(struct mwifiex_adapter
*adapter
)
145 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
147 /* Check if already processing */
148 if (adapter
->mwifiex_processing
) {
149 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
152 adapter
->mwifiex_processing
= true;
153 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
157 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
) ||
158 (adapter
->hw_status
== MWIFIEX_HW_STATUS_NOT_READY
))
161 /* Handle pending interrupt if any */
162 if (adapter
->int_status
) {
163 if (adapter
->hs_activated
)
164 mwifiex_process_hs_config(adapter
);
165 if (adapter
->if_ops
.process_int_status
)
166 adapter
->if_ops
.process_int_status(adapter
);
169 /* Need to wake up the card ? */
170 if ((adapter
->ps_state
== PS_STATE_SLEEP
) &&
171 (adapter
->pm_wakeup_card_req
&&
172 !adapter
->pm_wakeup_fw_try
) &&
173 (is_command_pending(adapter
) ||
174 !mwifiex_wmm_lists_empty(adapter
))) {
175 adapter
->pm_wakeup_fw_try
= true;
176 adapter
->if_ops
.wakeup(adapter
);
180 if (IS_CARD_RX_RCVD(adapter
)) {
181 adapter
->pm_wakeup_fw_try
= false;
182 if (adapter
->ps_state
== PS_STATE_SLEEP
)
183 adapter
->ps_state
= PS_STATE_AWAKE
;
185 /* We have tried to wakeup the card already */
186 if (adapter
->pm_wakeup_fw_try
)
188 if (adapter
->ps_state
!= PS_STATE_AWAKE
||
189 adapter
->tx_lock_flag
)
192 if ((adapter
->scan_processing
&&
193 !adapter
->scan_delay_cnt
) || adapter
->data_sent
||
194 mwifiex_wmm_lists_empty(adapter
)) {
195 if (adapter
->cmd_sent
|| adapter
->curr_cmd
||
196 (!is_command_pending(adapter
)))
201 /* Check Rx data for USB */
202 if (adapter
->iface_type
== MWIFIEX_USB
)
203 while ((skb
= skb_dequeue(&adapter
->usb_rx_data_q
)))
204 mwifiex_handle_rx_packet(adapter
, skb
);
206 /* Check for Cmd Resp */
207 if (adapter
->cmd_resp_received
) {
208 adapter
->cmd_resp_received
= false;
209 mwifiex_process_cmdresp(adapter
);
211 /* call mwifiex back when init_fw is done */
212 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_INIT_DONE
) {
213 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
214 mwifiex_init_fw_complete(adapter
);
218 /* Check for event */
219 if (adapter
->event_received
) {
220 adapter
->event_received
= false;
221 mwifiex_process_event(adapter
);
224 /* Check if we need to confirm Sleep Request
225 received previously */
226 if (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) {
227 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
)
228 mwifiex_check_ps_cond(adapter
);
231 /* * The ps_state may have been changed during processing of
232 * Sleep Request event.
234 if ((adapter
->ps_state
== PS_STATE_SLEEP
) ||
235 (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) ||
236 (adapter
->ps_state
== PS_STATE_SLEEP_CFM
) ||
237 adapter
->tx_lock_flag
)
240 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
) {
241 if (mwifiex_exec_next_cmd(adapter
) == -1) {
247 if ((!adapter
->scan_processing
|| adapter
->scan_delay_cnt
) &&
248 !adapter
->data_sent
&& !mwifiex_wmm_lists_empty(adapter
)) {
249 mwifiex_wmm_process_tx(adapter
);
250 if (adapter
->hs_activated
) {
251 adapter
->is_hs_configured
= false;
252 mwifiex_hs_activated_event
254 (adapter
, MWIFIEX_BSS_ROLE_ANY
),
259 if (adapter
->delay_null_pkt
&& !adapter
->cmd_sent
&&
260 !adapter
->curr_cmd
&& !is_command_pending(adapter
) &&
261 mwifiex_wmm_lists_empty(adapter
)) {
262 if (!mwifiex_send_null_packet
263 (mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
264 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
|
265 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET
)) {
266 adapter
->delay_null_pkt
= false;
267 adapter
->ps_state
= PS_STATE_SLEEP
;
273 if ((adapter
->int_status
) || IS_CARD_RX_RCVD(adapter
))
276 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
277 adapter
->mwifiex_processing
= false;
278 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
281 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
)
282 mwifiex_shutdown_drv(adapter
);
285 EXPORT_SYMBOL_GPL(mwifiex_main_process
);
288 * This function frees the adapter structure.
290 * Additionally, this closes the netlink socket, frees the timers
291 * and private structures.
293 static void mwifiex_free_adapter(struct mwifiex_adapter
*adapter
)
296 pr_err("%s: adapter is NULL\n", __func__
);
300 mwifiex_unregister(adapter
);
301 pr_debug("info: %s: free adapter\n", __func__
);
305 * This function gets firmware and initializes it.
307 * The main initialization steps followed are -
308 * - Download the correct firmware to card
309 * - Issue the init commands to firmware
311 static void mwifiex_fw_dpc(const struct firmware
*firmware
, void *context
)
315 struct mwifiex_private
*priv
;
316 struct mwifiex_adapter
*adapter
= context
;
317 struct mwifiex_fw_image fw
;
320 dev_err(adapter
->dev
,
321 "Failed to get firmware %s\n", adapter
->fw_name
);
325 memset(&fw
, 0, sizeof(struct mwifiex_fw_image
));
326 adapter
->firmware
= firmware
;
327 fw
.fw_buf
= (u8
*) adapter
->firmware
->data
;
328 fw
.fw_len
= adapter
->firmware
->size
;
330 if (adapter
->if_ops
.dnld_fw
)
331 ret
= adapter
->if_ops
.dnld_fw(adapter
, &fw
);
333 ret
= mwifiex_dnld_fw(adapter
, &fw
);
337 dev_notice(adapter
->dev
, "WLAN FW is active\n");
339 adapter
->init_wait_q_woken
= false;
340 ret
= mwifiex_init_fw(adapter
);
344 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
347 /* Wait for mwifiex_init to complete */
348 wait_event_interruptible(adapter
->init_wait_q
,
349 adapter
->init_wait_q_woken
);
350 if (adapter
->hw_status
!= MWIFIEX_HW_STATUS_READY
)
353 priv
= adapter
->priv
[MWIFIEX_BSS_ROLE_STA
];
354 if (mwifiex_register_cfg80211(adapter
)) {
355 dev_err(adapter
->dev
, "cannot register with cfg80211\n");
360 /* Create station interface by default */
361 if (!mwifiex_add_virtual_intf(adapter
->wiphy
, "mlan%d",
362 NL80211_IFTYPE_STATION
, NULL
, NULL
)) {
363 dev_err(adapter
->dev
, "cannot create default STA interface\n");
367 /* Create AP interface by default */
368 if (!mwifiex_add_virtual_intf(adapter
->wiphy
, "uap%d",
369 NL80211_IFTYPE_AP
, NULL
, NULL
)) {
370 dev_err(adapter
->dev
, "cannot create default AP interface\n");
374 /* Create P2P interface by default */
375 if (!mwifiex_add_virtual_intf(adapter
->wiphy
, "p2p%d",
376 NL80211_IFTYPE_P2P_CLIENT
, NULL
, NULL
)) {
377 dev_err(adapter
->dev
, "cannot create default P2P interface\n");
382 mwifiex_drv_get_driver_version(adapter
, fmt
, sizeof(fmt
) - 1);
383 dev_notice(adapter
->dev
, "driver_version = %s\n", fmt
);
387 mwifiex_del_virtual_intf(adapter
->wiphy
, priv
->wdev
);
390 pr_debug("info: %s: unregister device\n", __func__
);
391 adapter
->if_ops
.unregister_dev(adapter
);
393 release_firmware(adapter
->firmware
);
394 complete(&adapter
->fw_load
);
399 * This function initializes the hardware and gets firmware.
401 static int mwifiex_init_hw_fw(struct mwifiex_adapter
*adapter
)
405 init_completion(&adapter
->fw_load
);
406 ret
= request_firmware_nowait(THIS_MODULE
, 1, adapter
->fw_name
,
407 adapter
->dev
, GFP_KERNEL
, adapter
,
410 dev_err(adapter
->dev
,
411 "request_firmware_nowait() returned error %d\n", ret
);
416 * CFG802.11 network device handler for open.
418 * Starts the data queue.
421 mwifiex_open(struct net_device
*dev
)
423 netif_tx_start_all_queues(dev
);
428 * CFG802.11 network device handler for close.
431 mwifiex_close(struct net_device
*dev
)
433 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
435 if (priv
->scan_request
) {
436 dev_dbg(priv
->adapter
->dev
, "aborting scan on ndo_stop\n");
437 cfg80211_scan_done(priv
->scan_request
, 1);
438 priv
->scan_request
= NULL
;
445 * Add buffer into wmm tx queue and queue work to transmit it.
447 int mwifiex_queue_tx_pkt(struct mwifiex_private
*priv
, struct sk_buff
*skb
)
449 struct netdev_queue
*txq
;
450 int index
= mwifiex_1d_to_wmm_queue
[skb
->priority
];
452 if (atomic_inc_return(&priv
->wmm_tx_pending
[index
]) >= MAX_TX_PENDING
) {
453 txq
= netdev_get_tx_queue(priv
->netdev
, index
);
454 if (!netif_tx_queue_stopped(txq
)) {
455 netif_tx_stop_queue(txq
);
456 dev_dbg(priv
->adapter
->dev
, "stop queue: %d\n", index
);
460 atomic_inc(&priv
->adapter
->tx_pending
);
461 mwifiex_wmm_add_buf_txqueue(priv
, skb
);
463 if (priv
->adapter
->scan_delay_cnt
)
464 atomic_set(&priv
->adapter
->is_tx_received
, true);
466 queue_work(priv
->adapter
->workqueue
, &priv
->adapter
->main_work
);
472 * CFG802.11 network device handler for data transmission.
475 mwifiex_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
477 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
478 struct sk_buff
*new_skb
;
479 struct mwifiex_txinfo
*tx_info
;
482 dev_dbg(priv
->adapter
->dev
, "data: %lu BSS(%d-%d): Data <= kernel\n",
483 jiffies
, priv
->bss_type
, priv
->bss_num
);
485 if (priv
->adapter
->surprise_removed
) {
487 priv
->stats
.tx_dropped
++;
490 if (!skb
->len
|| (skb
->len
> ETH_FRAME_LEN
)) {
491 dev_err(priv
->adapter
->dev
, "Tx: bad skb len %d\n", skb
->len
);
493 priv
->stats
.tx_dropped
++;
496 if (skb_headroom(skb
) < MWIFIEX_MIN_DATA_HEADER_LEN
) {
497 dev_dbg(priv
->adapter
->dev
,
498 "data: Tx: insufficient skb headroom %d\n",
500 /* Insufficient skb headroom - allocate a new skb */
502 skb_realloc_headroom(skb
, MWIFIEX_MIN_DATA_HEADER_LEN
);
503 if (unlikely(!new_skb
)) {
504 dev_err(priv
->adapter
->dev
, "Tx: cannot alloca new_skb\n");
506 priv
->stats
.tx_dropped
++;
511 dev_dbg(priv
->adapter
->dev
, "info: new skb headroomd %d\n",
515 tx_info
= MWIFIEX_SKB_TXCB(skb
);
516 tx_info
->bss_num
= priv
->bss_num
;
517 tx_info
->bss_type
= priv
->bss_type
;
519 /* Record the current time the packet was queued; used to
520 * determine the amount of time the packet was queued in
521 * the driver before it was sent to the firmware.
522 * The delay is then sent along with the packet to the
523 * firmware for aggregate delay calculation for stats and
524 * MSDU lifetime expiry.
526 do_gettimeofday(&tv
);
527 skb
->tstamp
= timeval_to_ktime(tv
);
529 mwifiex_queue_tx_pkt(priv
, skb
);
535 * CFG802.11 network device handler for setting MAC address.
538 mwifiex_set_mac_address(struct net_device
*dev
, void *addr
)
540 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
541 struct sockaddr
*hw_addr
= addr
;
544 memcpy(priv
->curr_addr
, hw_addr
->sa_data
, ETH_ALEN
);
546 /* Send request to firmware */
547 ret
= mwifiex_send_cmd_sync(priv
, HostCmd_CMD_802_11_MAC_ADDRESS
,
548 HostCmd_ACT_GEN_SET
, 0, NULL
);
551 memcpy(priv
->netdev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
553 dev_err(priv
->adapter
->dev
,
554 "set mac address failed: ret=%d\n", ret
);
556 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
562 * CFG802.11 network device handler for setting multicast list.
564 static void mwifiex_set_multicast_list(struct net_device
*dev
)
566 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
567 struct mwifiex_multicast_list mcast_list
;
569 if (dev
->flags
& IFF_PROMISC
) {
570 mcast_list
.mode
= MWIFIEX_PROMISC_MODE
;
571 } else if (dev
->flags
& IFF_ALLMULTI
||
572 netdev_mc_count(dev
) > MWIFIEX_MAX_MULTICAST_LIST_SIZE
) {
573 mcast_list
.mode
= MWIFIEX_ALL_MULTI_MODE
;
575 mcast_list
.mode
= MWIFIEX_MULTICAST_MODE
;
576 if (netdev_mc_count(dev
))
577 mcast_list
.num_multicast_addr
=
578 mwifiex_copy_mcast_addr(&mcast_list
, dev
);
580 mwifiex_request_set_multicast_list(priv
, &mcast_list
);
584 * CFG802.11 network device handler for transmission timeout.
587 mwifiex_tx_timeout(struct net_device
*dev
)
589 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
591 priv
->num_tx_timeout
++;
592 priv
->tx_timeout_cnt
++;
593 dev_err(priv
->adapter
->dev
,
594 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
595 jiffies
, priv
->tx_timeout_cnt
, priv
->bss_type
, priv
->bss_num
);
596 mwifiex_set_trans_start(dev
);
598 if (priv
->tx_timeout_cnt
> TX_TIMEOUT_THRESHOLD
&&
599 priv
->adapter
->if_ops
.card_reset
) {
600 dev_err(priv
->adapter
->dev
,
601 "tx_timeout_cnt exceeds threshold. Triggering card reset!\n");
602 priv
->adapter
->if_ops
.card_reset(priv
->adapter
);
607 * CFG802.11 network device handler for statistics retrieval.
609 static struct net_device_stats
*mwifiex_get_stats(struct net_device
*dev
)
611 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
617 mwifiex_netdev_select_wmm_queue(struct net_device
*dev
, struct sk_buff
*skb
)
619 skb
->priority
= cfg80211_classify8021d(skb
);
620 return mwifiex_1d_to_wmm_queue
[skb
->priority
];
623 /* Network device handlers */
624 static const struct net_device_ops mwifiex_netdev_ops
= {
625 .ndo_open
= mwifiex_open
,
626 .ndo_stop
= mwifiex_close
,
627 .ndo_start_xmit
= mwifiex_hard_start_xmit
,
628 .ndo_set_mac_address
= mwifiex_set_mac_address
,
629 .ndo_tx_timeout
= mwifiex_tx_timeout
,
630 .ndo_get_stats
= mwifiex_get_stats
,
631 .ndo_set_rx_mode
= mwifiex_set_multicast_list
,
632 .ndo_select_queue
= mwifiex_netdev_select_wmm_queue
,
636 * This function initializes the private structure parameters.
638 * The following wait queues are initialized -
640 * - Command wait queue
641 * - Statistics wait queue
643 * ...and the following default parameters are set -
644 * - Current key index : Set to 0
645 * - Rate index : Set to auto
646 * - Media connected : Set to disconnected
647 * - Adhoc link sensed : Set to false
648 * - Nick name : Set to null
649 * - Number of Tx timeout : Set to 0
650 * - Device address : Set to current address
652 * In addition, the CFG80211 work queue is also created.
654 void mwifiex_init_priv_params(struct mwifiex_private
*priv
,
655 struct net_device
*dev
)
657 dev
->netdev_ops
= &mwifiex_netdev_ops
;
658 dev
->destructor
= free_netdev
;
659 /* Initialize private structure */
660 priv
->current_key_index
= 0;
661 priv
->media_connected
= false;
662 memset(&priv
->nick_name
, 0, sizeof(priv
->nick_name
));
663 memset(priv
->mgmt_ie
, 0,
664 sizeof(struct mwifiex_ie
) * MAX_MGMT_IE_INDEX
);
665 priv
->beacon_idx
= MWIFIEX_AUTO_IDX_MASK
;
666 priv
->proberesp_idx
= MWIFIEX_AUTO_IDX_MASK
;
667 priv
->assocresp_idx
= MWIFIEX_AUTO_IDX_MASK
;
668 priv
->rsn_idx
= MWIFIEX_AUTO_IDX_MASK
;
669 priv
->num_tx_timeout
= 0;
670 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
674 * This function check if command is pending.
676 int is_command_pending(struct mwifiex_adapter
*adapter
)
679 int is_cmd_pend_q_empty
;
681 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, flags
);
682 is_cmd_pend_q_empty
= list_empty(&adapter
->cmd_pending_q
);
683 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, flags
);
685 return !is_cmd_pend_q_empty
;
689 * This is the main work queue function.
691 * It handles the main process, which in turn handles the complete
694 static void mwifiex_main_work_queue(struct work_struct
*work
)
696 struct mwifiex_adapter
*adapter
=
697 container_of(work
, struct mwifiex_adapter
, main_work
);
699 if (adapter
->surprise_removed
)
701 mwifiex_main_process(adapter
);
705 * This function cancels all works in the queue and destroys
706 * the main workqueue.
709 mwifiex_terminate_workqueue(struct mwifiex_adapter
*adapter
)
711 flush_workqueue(adapter
->workqueue
);
712 destroy_workqueue(adapter
->workqueue
);
713 adapter
->workqueue
= NULL
;
717 * This function adds the card.
719 * This function follows the following major steps to set up the device -
720 * - Initialize software. This includes probing the card, registering
721 * the interface operations table, and allocating/initializing the
723 * - Set up the netlink socket
724 * - Create and start the main work queue
725 * - Register the device
726 * - Initialize firmware and hardware
727 * - Add logical interfaces
730 mwifiex_add_card(void *card
, struct semaphore
*sem
,
731 struct mwifiex_if_ops
*if_ops
, u8 iface_type
)
733 struct mwifiex_adapter
*adapter
;
735 if (down_interruptible(sem
))
738 if (mwifiex_register(card
, if_ops
, (void **)&adapter
)) {
739 pr_err("%s: software init failed\n", __func__
);
743 adapter
->iface_type
= iface_type
;
745 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
746 adapter
->surprise_removed
= false;
747 init_waitqueue_head(&adapter
->init_wait_q
);
748 adapter
->is_suspended
= false;
749 adapter
->hs_activated
= false;
750 init_waitqueue_head(&adapter
->hs_activate_wait_q
);
751 adapter
->cmd_wait_q_required
= false;
752 init_waitqueue_head(&adapter
->cmd_wait_q
.wait
);
753 adapter
->cmd_wait_q
.status
= 0;
754 adapter
->scan_wait_q_woken
= false;
756 adapter
->workqueue
= create_workqueue("MWIFIEX_WORK_QUEUE");
757 if (!adapter
->workqueue
)
760 INIT_WORK(&adapter
->main_work
, mwifiex_main_work_queue
);
762 /* Register the device. Fill up the private data structure with relevant
763 information from the card and request for the required IRQ. */
764 if (adapter
->if_ops
.register_dev(adapter
)) {
765 pr_err("%s: failed to register mwifiex device\n", __func__
);
766 goto err_registerdev
;
769 if (mwifiex_init_hw_fw(adapter
)) {
770 pr_err("%s: firmware init failed\n", __func__
);
778 pr_debug("info: %s: unregister device\n", __func__
);
779 if (adapter
->if_ops
.unregister_dev
)
780 adapter
->if_ops
.unregister_dev(adapter
);
782 adapter
->surprise_removed
= true;
783 mwifiex_terminate_workqueue(adapter
);
785 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_FW_READY
) ||
786 (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
)) {
787 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
788 adapter
->init_wait_q_woken
= false;
790 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
791 wait_event_interruptible(adapter
->init_wait_q
,
792 adapter
->init_wait_q_woken
);
795 mwifiex_free_adapter(adapter
);
803 EXPORT_SYMBOL_GPL(mwifiex_add_card
);
806 * This function removes the card.
808 * This function follows the following major steps to remove the device -
809 * - Stop data traffic
810 * - Shutdown firmware
811 * - Remove the logical interfaces
812 * - Terminate the work queue
813 * - Unregister the device
814 * - Free the adapter structure
816 int mwifiex_remove_card(struct mwifiex_adapter
*adapter
, struct semaphore
*sem
)
818 struct mwifiex_private
*priv
= NULL
;
821 if (down_interruptible(sem
))
827 adapter
->surprise_removed
= true;
830 for (i
= 0; i
< adapter
->priv_num
; i
++) {
831 priv
= adapter
->priv
[i
];
832 if (priv
&& priv
->netdev
) {
833 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
834 if (netif_carrier_ok(priv
->netdev
))
835 netif_carrier_off(priv
->netdev
);
839 dev_dbg(adapter
->dev
, "cmd: calling mwifiex_shutdown_drv...\n");
840 adapter
->init_wait_q_woken
= false;
842 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
843 wait_event_interruptible(adapter
->init_wait_q
,
844 adapter
->init_wait_q_woken
);
845 dev_dbg(adapter
->dev
, "cmd: mwifiex_shutdown_drv done\n");
846 if (atomic_read(&adapter
->rx_pending
) ||
847 atomic_read(&adapter
->tx_pending
) ||
848 atomic_read(&adapter
->cmd_pending
)) {
849 dev_err(adapter
->dev
, "rx_pending=%d, tx_pending=%d, "
851 atomic_read(&adapter
->rx_pending
),
852 atomic_read(&adapter
->tx_pending
),
853 atomic_read(&adapter
->cmd_pending
));
856 for (i
= 0; i
< adapter
->priv_num
; i
++) {
857 priv
= adapter
->priv
[i
];
863 if (priv
->wdev
&& priv
->netdev
)
864 mwifiex_del_virtual_intf(adapter
->wiphy
, priv
->wdev
);
868 priv
= adapter
->priv
[0];
869 if (!priv
|| !priv
->wdev
)
872 wiphy_unregister(priv
->wdev
->wiphy
);
873 wiphy_free(priv
->wdev
->wiphy
);
875 for (i
= 0; i
< adapter
->priv_num
; i
++) {
876 priv
= adapter
->priv
[i
];
881 mwifiex_terminate_workqueue(adapter
);
883 /* Unregister device */
884 dev_dbg(adapter
->dev
, "info: unregister device\n");
885 if (adapter
->if_ops
.unregister_dev
)
886 adapter
->if_ops
.unregister_dev(adapter
);
887 /* Free adapter structure */
888 dev_dbg(adapter
->dev
, "info: free adapter\n");
889 mwifiex_free_adapter(adapter
);
896 EXPORT_SYMBOL_GPL(mwifiex_remove_card
);
899 * This function initializes the module.
901 * The debug FS is also initialized if configured.
904 mwifiex_init_module(void)
906 #ifdef CONFIG_DEBUG_FS
907 mwifiex_debugfs_init();
913 * This function cleans up the module.
915 * The debug FS is removed if available.
918 mwifiex_cleanup_module(void)
920 #ifdef CONFIG_DEBUG_FS
921 mwifiex_debugfs_remove();
925 module_init(mwifiex_init_module
);
926 module_exit(mwifiex_cleanup_module
);
928 MODULE_AUTHOR("Marvell International Ltd.");
929 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION
);
930 MODULE_VERSION(VERSION
);
931 MODULE_LICENSE("GPL v2");