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) ";
28 static char *cal_data_cfg
;
29 module_param(cal_data_cfg
, charp
, 0);
31 static void scan_delay_timer_fn(unsigned long data
)
33 struct mwifiex_private
*priv
= (struct mwifiex_private
*)data
;
34 struct mwifiex_adapter
*adapter
= priv
->adapter
;
35 struct cmd_ctrl_node
*cmd_node
, *tmp_node
;
38 if (adapter
->surprise_removed
)
41 if (adapter
->scan_delay_cnt
== MWIFIEX_MAX_SCAN_DELAY_CNT
) {
43 * Abort scan operation by cancelling all pending scan
46 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
47 list_for_each_entry_safe(cmd_node
, tmp_node
,
48 &adapter
->scan_pending_q
, list
) {
49 list_del(&cmd_node
->list
);
50 mwifiex_insert_cmd_to_free_q(adapter
, cmd_node
);
52 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
54 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
55 adapter
->scan_processing
= false;
56 adapter
->scan_delay_cnt
= 0;
57 adapter
->empty_tx_q_cnt
= 0;
58 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
60 if (priv
->scan_request
) {
61 dev_dbg(adapter
->dev
, "info: aborting scan\n");
62 cfg80211_scan_done(priv
->scan_request
, 1);
63 priv
->scan_request
= NULL
;
65 priv
->scan_aborting
= false;
66 dev_dbg(adapter
->dev
, "info: scan already aborted\n");
71 if (!atomic_read(&priv
->adapter
->is_tx_received
)) {
72 adapter
->empty_tx_q_cnt
++;
73 if (adapter
->empty_tx_q_cnt
== MWIFIEX_MAX_EMPTY_TX_Q_CNT
) {
75 * No Tx traffic for 200msec. Get scan command from
76 * scan pending queue and put to cmd pending queue to
77 * resume scan operation
79 adapter
->scan_delay_cnt
= 0;
80 adapter
->empty_tx_q_cnt
= 0;
81 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
82 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
83 struct cmd_ctrl_node
, list
);
84 list_del(&cmd_node
->list
);
85 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
88 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
90 queue_work(adapter
->workqueue
, &adapter
->main_work
);
94 adapter
->empty_tx_q_cnt
= 0;
97 /* Delay scan operation further by 20msec */
98 mod_timer(&priv
->scan_delay_timer
, jiffies
+
99 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC
));
100 adapter
->scan_delay_cnt
++;
103 if (atomic_read(&priv
->adapter
->is_tx_received
))
104 atomic_set(&priv
->adapter
->is_tx_received
, false);
110 * This function registers the device and performs all the necessary
113 * The following initialization operations are performed -
114 * - Allocate adapter structure
115 * - Save interface specific operations table in adapter
116 * - Call interface specific initialization routine
117 * - Allocate private structures
118 * - Set default adapter structure parameters
121 * In case of any errors during inittialization, this function also ensures
122 * proper cleanup before exiting.
124 static int mwifiex_register(void *card
, struct mwifiex_if_ops
*if_ops
,
127 struct mwifiex_adapter
*adapter
;
130 adapter
= kzalloc(sizeof(struct mwifiex_adapter
), GFP_KERNEL
);
135 adapter
->card
= card
;
137 /* Save interface specific operations in adapter */
138 memmove(&adapter
->if_ops
, if_ops
, sizeof(struct mwifiex_if_ops
));
140 /* card specific initialization has been deferred until now .. */
141 if (adapter
->if_ops
.init_if
)
142 if (adapter
->if_ops
.init_if(adapter
))
145 adapter
->priv_num
= 0;
147 for (i
= 0; i
< MWIFIEX_MAX_BSS_NUM
; i
++) {
148 /* Allocate memory for private structure */
150 kzalloc(sizeof(struct mwifiex_private
), GFP_KERNEL
);
151 if (!adapter
->priv
[i
])
154 adapter
->priv
[i
]->adapter
= adapter
;
157 setup_timer(&adapter
->priv
[i
]->scan_delay_timer
,
159 (unsigned long)adapter
->priv
[i
]);
161 mwifiex_init_lock_list(adapter
);
163 init_timer(&adapter
->cmd_timer
);
164 adapter
->cmd_timer
.function
= mwifiex_cmd_timeout_func
;
165 adapter
->cmd_timer
.data
= (unsigned long) adapter
;
170 dev_dbg(adapter
->dev
, "info: leave mwifiex_register with error\n");
172 for (i
= 0; i
< adapter
->priv_num
; i
++)
173 kfree(adapter
->priv
[i
]);
181 * This function unregisters the device and performs all the necessary
184 * The following cleanup operations are performed -
186 * - Free beacon buffers
187 * - Free private structures
188 * - Free adapter structure
190 static int mwifiex_unregister(struct mwifiex_adapter
*adapter
)
194 del_timer(&adapter
->cmd_timer
);
196 /* Free private structures */
197 for (i
= 0; i
< adapter
->priv_num
; i
++) {
198 if (adapter
->priv
[i
]) {
199 mwifiex_free_curr_bcn(adapter
->priv
[i
]);
200 kfree(adapter
->priv
[i
]);
211 * This function is the main procedure of the driver and handles various driver
212 * operations. It runs in a loop and provides the core functionalities.
214 * The main responsibilities of this function are -
215 * - Ensure concurrency control
216 * - Handle pending interrupts and call interrupt handlers
217 * - Wake up the card if required
218 * - Handle command responses and call response handlers
219 * - Handle events and call event handlers
220 * - Execute pending commands
221 * - Transmit pending data packets
223 int mwifiex_main_process(struct mwifiex_adapter
*adapter
)
229 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
231 /* Check if already processing */
232 if (adapter
->mwifiex_processing
) {
233 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
236 adapter
->mwifiex_processing
= true;
237 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
241 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
) ||
242 (adapter
->hw_status
== MWIFIEX_HW_STATUS_NOT_READY
))
245 /* Handle pending interrupt if any */
246 if (adapter
->int_status
) {
247 if (adapter
->hs_activated
)
248 mwifiex_process_hs_config(adapter
);
249 if (adapter
->if_ops
.process_int_status
)
250 adapter
->if_ops
.process_int_status(adapter
);
253 /* Need to wake up the card ? */
254 if ((adapter
->ps_state
== PS_STATE_SLEEP
) &&
255 (adapter
->pm_wakeup_card_req
&&
256 !adapter
->pm_wakeup_fw_try
) &&
257 (is_command_pending(adapter
) ||
258 !mwifiex_wmm_lists_empty(adapter
))) {
259 adapter
->pm_wakeup_fw_try
= true;
260 adapter
->if_ops
.wakeup(adapter
);
264 if (IS_CARD_RX_RCVD(adapter
)) {
265 adapter
->pm_wakeup_fw_try
= false;
266 if (adapter
->ps_state
== PS_STATE_SLEEP
)
267 adapter
->ps_state
= PS_STATE_AWAKE
;
269 /* We have tried to wakeup the card already */
270 if (adapter
->pm_wakeup_fw_try
)
272 if (adapter
->ps_state
!= PS_STATE_AWAKE
||
273 adapter
->tx_lock_flag
)
276 if ((adapter
->scan_processing
&&
277 !adapter
->scan_delay_cnt
) || adapter
->data_sent
||
278 mwifiex_wmm_lists_empty(adapter
)) {
279 if (adapter
->cmd_sent
|| adapter
->curr_cmd
||
280 (!is_command_pending(adapter
)))
285 /* Check Rx data for USB */
286 if (adapter
->iface_type
== MWIFIEX_USB
)
287 while ((skb
= skb_dequeue(&adapter
->usb_rx_data_q
)))
288 mwifiex_handle_rx_packet(adapter
, skb
);
290 /* Check for Cmd Resp */
291 if (adapter
->cmd_resp_received
) {
292 adapter
->cmd_resp_received
= false;
293 mwifiex_process_cmdresp(adapter
);
295 /* call mwifiex back when init_fw is done */
296 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_INIT_DONE
) {
297 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
298 mwifiex_init_fw_complete(adapter
);
302 /* Check for event */
303 if (adapter
->event_received
) {
304 adapter
->event_received
= false;
305 mwifiex_process_event(adapter
);
308 /* Check if we need to confirm Sleep Request
309 received previously */
310 if (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) {
311 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
)
312 mwifiex_check_ps_cond(adapter
);
315 /* * The ps_state may have been changed during processing of
316 * Sleep Request event.
318 if ((adapter
->ps_state
== PS_STATE_SLEEP
) ||
319 (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) ||
320 (adapter
->ps_state
== PS_STATE_SLEEP_CFM
) ||
321 adapter
->tx_lock_flag
)
324 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
) {
325 if (mwifiex_exec_next_cmd(adapter
) == -1) {
331 if ((!adapter
->scan_processing
|| adapter
->scan_delay_cnt
) &&
332 !adapter
->data_sent
&& !mwifiex_wmm_lists_empty(adapter
)) {
333 mwifiex_wmm_process_tx(adapter
);
334 if (adapter
->hs_activated
) {
335 adapter
->is_hs_configured
= false;
336 mwifiex_hs_activated_event
338 (adapter
, MWIFIEX_BSS_ROLE_ANY
),
343 if (adapter
->delay_null_pkt
&& !adapter
->cmd_sent
&&
344 !adapter
->curr_cmd
&& !is_command_pending(adapter
) &&
345 mwifiex_wmm_lists_empty(adapter
)) {
346 if (!mwifiex_send_null_packet
347 (mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
348 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
|
349 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET
)) {
350 adapter
->delay_null_pkt
= false;
351 adapter
->ps_state
= PS_STATE_SLEEP
;
357 if ((adapter
->int_status
) || IS_CARD_RX_RCVD(adapter
))
360 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
361 adapter
->mwifiex_processing
= false;
362 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
365 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
)
366 mwifiex_shutdown_drv(adapter
);
369 EXPORT_SYMBOL_GPL(mwifiex_main_process
);
372 * This function frees the adapter structure.
374 * Additionally, this closes the netlink socket, frees the timers
375 * and private structures.
377 static void mwifiex_free_adapter(struct mwifiex_adapter
*adapter
)
380 pr_err("%s: adapter is NULL\n", __func__
);
384 mwifiex_unregister(adapter
);
385 pr_debug("info: %s: free adapter\n", __func__
);
389 * This function gets firmware and initializes it.
391 * The main initialization steps followed are -
392 * - Download the correct firmware to card
393 * - Issue the init commands to firmware
395 static void mwifiex_fw_dpc(const struct firmware
*firmware
, void *context
)
399 struct mwifiex_private
*priv
;
400 struct mwifiex_adapter
*adapter
= context
;
401 struct mwifiex_fw_image fw
;
404 dev_err(adapter
->dev
,
405 "Failed to get firmware %s\n", adapter
->fw_name
);
409 memset(&fw
, 0, sizeof(struct mwifiex_fw_image
));
410 adapter
->firmware
= firmware
;
411 fw
.fw_buf
= (u8
*) adapter
->firmware
->data
;
412 fw
.fw_len
= adapter
->firmware
->size
;
414 if (adapter
->if_ops
.dnld_fw
)
415 ret
= adapter
->if_ops
.dnld_fw(adapter
, &fw
);
417 ret
= mwifiex_dnld_fw(adapter
, &fw
);
421 dev_notice(adapter
->dev
, "WLAN FW is active\n");
424 if ((request_firmware(&adapter
->cal_data
, cal_data_cfg
,
426 dev_err(adapter
->dev
,
427 "Cal data request_firmware() failed\n");
430 /* enable host interrupt after fw dnld is successful */
431 if (adapter
->if_ops
.enable_int
)
432 adapter
->if_ops
.enable_int(adapter
);
434 adapter
->init_wait_q_woken
= false;
435 ret
= mwifiex_init_fw(adapter
);
439 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
442 /* Wait for mwifiex_init to complete */
443 wait_event_interruptible(adapter
->init_wait_q
,
444 adapter
->init_wait_q_woken
);
445 if (adapter
->hw_status
!= MWIFIEX_HW_STATUS_READY
)
448 priv
= adapter
->priv
[MWIFIEX_BSS_ROLE_STA
];
449 if (mwifiex_register_cfg80211(adapter
)) {
450 dev_err(adapter
->dev
, "cannot register with cfg80211\n");
455 /* Create station interface by default */
456 if (!mwifiex_add_virtual_intf(adapter
->wiphy
, "mlan%d",
457 NL80211_IFTYPE_STATION
, NULL
, NULL
)) {
458 dev_err(adapter
->dev
, "cannot create default STA interface\n");
462 /* Create AP interface by default */
463 if (!mwifiex_add_virtual_intf(adapter
->wiphy
, "uap%d",
464 NL80211_IFTYPE_AP
, NULL
, NULL
)) {
465 dev_err(adapter
->dev
, "cannot create default AP interface\n");
469 /* Create P2P interface by default */
470 if (!mwifiex_add_virtual_intf(adapter
->wiphy
, "p2p%d",
471 NL80211_IFTYPE_P2P_CLIENT
, NULL
, NULL
)) {
472 dev_err(adapter
->dev
, "cannot create default P2P interface\n");
477 mwifiex_drv_get_driver_version(adapter
, fmt
, sizeof(fmt
) - 1);
478 dev_notice(adapter
->dev
, "driver_version = %s\n", fmt
);
482 mwifiex_del_virtual_intf(adapter
->wiphy
, priv
->wdev
);
485 if (adapter
->if_ops
.disable_int
)
486 adapter
->if_ops
.disable_int(adapter
);
487 pr_debug("info: %s: unregister device\n", __func__
);
488 adapter
->if_ops
.unregister_dev(adapter
);
490 if (adapter
->cal_data
) {
491 release_firmware(adapter
->cal_data
);
492 adapter
->cal_data
= NULL
;
494 release_firmware(adapter
->firmware
);
495 complete(&adapter
->fw_load
);
500 * This function initializes the hardware and gets firmware.
502 static int mwifiex_init_hw_fw(struct mwifiex_adapter
*adapter
)
506 init_completion(&adapter
->fw_load
);
507 ret
= request_firmware_nowait(THIS_MODULE
, 1, adapter
->fw_name
,
508 adapter
->dev
, GFP_KERNEL
, adapter
,
511 dev_err(adapter
->dev
,
512 "request_firmware_nowait() returned error %d\n", ret
);
517 * CFG802.11 network device handler for open.
519 * Starts the data queue.
522 mwifiex_open(struct net_device
*dev
)
524 netif_tx_start_all_queues(dev
);
529 * CFG802.11 network device handler for close.
532 mwifiex_close(struct net_device
*dev
)
534 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
536 if (priv
->scan_request
) {
537 dev_dbg(priv
->adapter
->dev
, "aborting scan on ndo_stop\n");
538 cfg80211_scan_done(priv
->scan_request
, 1);
539 priv
->scan_request
= NULL
;
540 priv
->scan_aborting
= true;
547 * Add buffer into wmm tx queue and queue work to transmit it.
549 int mwifiex_queue_tx_pkt(struct mwifiex_private
*priv
, struct sk_buff
*skb
)
551 struct netdev_queue
*txq
;
552 int index
= mwifiex_1d_to_wmm_queue
[skb
->priority
];
554 if (atomic_inc_return(&priv
->wmm_tx_pending
[index
]) >= MAX_TX_PENDING
) {
555 txq
= netdev_get_tx_queue(priv
->netdev
, index
);
556 if (!netif_tx_queue_stopped(txq
)) {
557 netif_tx_stop_queue(txq
);
558 dev_dbg(priv
->adapter
->dev
, "stop queue: %d\n", index
);
562 atomic_inc(&priv
->adapter
->tx_pending
);
563 mwifiex_wmm_add_buf_txqueue(priv
, skb
);
565 if (priv
->adapter
->scan_delay_cnt
)
566 atomic_set(&priv
->adapter
->is_tx_received
, true);
568 queue_work(priv
->adapter
->workqueue
, &priv
->adapter
->main_work
);
574 * CFG802.11 network device handler for data transmission.
577 mwifiex_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
579 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
580 struct sk_buff
*new_skb
;
581 struct mwifiex_txinfo
*tx_info
;
584 dev_dbg(priv
->adapter
->dev
, "data: %lu BSS(%d-%d): Data <= kernel\n",
585 jiffies
, priv
->bss_type
, priv
->bss_num
);
587 if (priv
->adapter
->surprise_removed
) {
589 priv
->stats
.tx_dropped
++;
592 if (!skb
->len
|| (skb
->len
> ETH_FRAME_LEN
)) {
593 dev_err(priv
->adapter
->dev
, "Tx: bad skb len %d\n", skb
->len
);
595 priv
->stats
.tx_dropped
++;
598 if (skb_headroom(skb
) < MWIFIEX_MIN_DATA_HEADER_LEN
) {
599 dev_dbg(priv
->adapter
->dev
,
600 "data: Tx: insufficient skb headroom %d\n",
602 /* Insufficient skb headroom - allocate a new skb */
604 skb_realloc_headroom(skb
, MWIFIEX_MIN_DATA_HEADER_LEN
);
605 if (unlikely(!new_skb
)) {
606 dev_err(priv
->adapter
->dev
, "Tx: cannot alloca new_skb\n");
608 priv
->stats
.tx_dropped
++;
613 dev_dbg(priv
->adapter
->dev
, "info: new skb headroomd %d\n",
617 tx_info
= MWIFIEX_SKB_TXCB(skb
);
618 tx_info
->bss_num
= priv
->bss_num
;
619 tx_info
->bss_type
= priv
->bss_type
;
621 /* Record the current time the packet was queued; used to
622 * determine the amount of time the packet was queued in
623 * the driver before it was sent to the firmware.
624 * The delay is then sent along with the packet to the
625 * firmware for aggregate delay calculation for stats and
626 * MSDU lifetime expiry.
628 do_gettimeofday(&tv
);
629 skb
->tstamp
= timeval_to_ktime(tv
);
631 mwifiex_queue_tx_pkt(priv
, skb
);
637 * CFG802.11 network device handler for setting MAC address.
640 mwifiex_set_mac_address(struct net_device
*dev
, void *addr
)
642 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
643 struct sockaddr
*hw_addr
= addr
;
646 memcpy(priv
->curr_addr
, hw_addr
->sa_data
, ETH_ALEN
);
648 /* Send request to firmware */
649 ret
= mwifiex_send_cmd_sync(priv
, HostCmd_CMD_802_11_MAC_ADDRESS
,
650 HostCmd_ACT_GEN_SET
, 0, NULL
);
653 memcpy(priv
->netdev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
655 dev_err(priv
->adapter
->dev
,
656 "set mac address failed: ret=%d\n", ret
);
658 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
664 * CFG802.11 network device handler for setting multicast list.
666 static void mwifiex_set_multicast_list(struct net_device
*dev
)
668 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
669 struct mwifiex_multicast_list mcast_list
;
671 if (dev
->flags
& IFF_PROMISC
) {
672 mcast_list
.mode
= MWIFIEX_PROMISC_MODE
;
673 } else if (dev
->flags
& IFF_ALLMULTI
||
674 netdev_mc_count(dev
) > MWIFIEX_MAX_MULTICAST_LIST_SIZE
) {
675 mcast_list
.mode
= MWIFIEX_ALL_MULTI_MODE
;
677 mcast_list
.mode
= MWIFIEX_MULTICAST_MODE
;
678 mcast_list
.num_multicast_addr
=
679 mwifiex_copy_mcast_addr(&mcast_list
, dev
);
681 mwifiex_request_set_multicast_list(priv
, &mcast_list
);
685 * CFG802.11 network device handler for transmission timeout.
688 mwifiex_tx_timeout(struct net_device
*dev
)
690 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
692 priv
->num_tx_timeout
++;
693 priv
->tx_timeout_cnt
++;
694 dev_err(priv
->adapter
->dev
,
695 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
696 jiffies
, priv
->tx_timeout_cnt
, priv
->bss_type
, priv
->bss_num
);
697 mwifiex_set_trans_start(dev
);
699 if (priv
->tx_timeout_cnt
> TX_TIMEOUT_THRESHOLD
&&
700 priv
->adapter
->if_ops
.card_reset
) {
701 dev_err(priv
->adapter
->dev
,
702 "tx_timeout_cnt exceeds threshold. Triggering card reset!\n");
703 priv
->adapter
->if_ops
.card_reset(priv
->adapter
);
708 * CFG802.11 network device handler for statistics retrieval.
710 static struct net_device_stats
*mwifiex_get_stats(struct net_device
*dev
)
712 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
718 mwifiex_netdev_select_wmm_queue(struct net_device
*dev
, struct sk_buff
*skb
)
720 skb
->priority
= cfg80211_classify8021d(skb
);
721 return mwifiex_1d_to_wmm_queue
[skb
->priority
];
724 /* Network device handlers */
725 static const struct net_device_ops mwifiex_netdev_ops
= {
726 .ndo_open
= mwifiex_open
,
727 .ndo_stop
= mwifiex_close
,
728 .ndo_start_xmit
= mwifiex_hard_start_xmit
,
729 .ndo_set_mac_address
= mwifiex_set_mac_address
,
730 .ndo_tx_timeout
= mwifiex_tx_timeout
,
731 .ndo_get_stats
= mwifiex_get_stats
,
732 .ndo_set_rx_mode
= mwifiex_set_multicast_list
,
733 .ndo_select_queue
= mwifiex_netdev_select_wmm_queue
,
737 * This function initializes the private structure parameters.
739 * The following wait queues are initialized -
741 * - Command wait queue
742 * - Statistics wait queue
744 * ...and the following default parameters are set -
745 * - Current key index : Set to 0
746 * - Rate index : Set to auto
747 * - Media connected : Set to disconnected
748 * - Adhoc link sensed : Set to false
749 * - Nick name : Set to null
750 * - Number of Tx timeout : Set to 0
751 * - Device address : Set to current address
753 * In addition, the CFG80211 work queue is also created.
755 void mwifiex_init_priv_params(struct mwifiex_private
*priv
,
756 struct net_device
*dev
)
758 dev
->netdev_ops
= &mwifiex_netdev_ops
;
759 dev
->destructor
= free_netdev
;
760 /* Initialize private structure */
761 priv
->current_key_index
= 0;
762 priv
->media_connected
= false;
763 memset(&priv
->nick_name
, 0, sizeof(priv
->nick_name
));
764 memset(priv
->mgmt_ie
, 0,
765 sizeof(struct mwifiex_ie
) * MAX_MGMT_IE_INDEX
);
766 priv
->beacon_idx
= MWIFIEX_AUTO_IDX_MASK
;
767 priv
->proberesp_idx
= MWIFIEX_AUTO_IDX_MASK
;
768 priv
->assocresp_idx
= MWIFIEX_AUTO_IDX_MASK
;
769 priv
->rsn_idx
= MWIFIEX_AUTO_IDX_MASK
;
770 priv
->num_tx_timeout
= 0;
771 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
775 * This function check if command is pending.
777 int is_command_pending(struct mwifiex_adapter
*adapter
)
780 int is_cmd_pend_q_empty
;
782 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, flags
);
783 is_cmd_pend_q_empty
= list_empty(&adapter
->cmd_pending_q
);
784 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, flags
);
786 return !is_cmd_pend_q_empty
;
790 * This is the main work queue function.
792 * It handles the main process, which in turn handles the complete
795 static void mwifiex_main_work_queue(struct work_struct
*work
)
797 struct mwifiex_adapter
*adapter
=
798 container_of(work
, struct mwifiex_adapter
, main_work
);
800 if (adapter
->surprise_removed
)
802 mwifiex_main_process(adapter
);
806 * This function cancels all works in the queue and destroys
807 * the main workqueue.
810 mwifiex_terminate_workqueue(struct mwifiex_adapter
*adapter
)
812 flush_workqueue(adapter
->workqueue
);
813 destroy_workqueue(adapter
->workqueue
);
814 adapter
->workqueue
= NULL
;
818 * This function adds the card.
820 * This function follows the following major steps to set up the device -
821 * - Initialize software. This includes probing the card, registering
822 * the interface operations table, and allocating/initializing the
824 * - Set up the netlink socket
825 * - Create and start the main work queue
826 * - Register the device
827 * - Initialize firmware and hardware
828 * - Add logical interfaces
831 mwifiex_add_card(void *card
, struct semaphore
*sem
,
832 struct mwifiex_if_ops
*if_ops
, u8 iface_type
)
834 struct mwifiex_adapter
*adapter
;
836 if (down_interruptible(sem
))
839 if (mwifiex_register(card
, if_ops
, (void **)&adapter
)) {
840 pr_err("%s: software init failed\n", __func__
);
844 adapter
->iface_type
= iface_type
;
846 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
847 adapter
->surprise_removed
= false;
848 init_waitqueue_head(&adapter
->init_wait_q
);
849 adapter
->is_suspended
= false;
850 adapter
->hs_activated
= false;
851 init_waitqueue_head(&adapter
->hs_activate_wait_q
);
852 adapter
->cmd_wait_q_required
= false;
853 init_waitqueue_head(&adapter
->cmd_wait_q
.wait
);
854 adapter
->cmd_wait_q
.status
= 0;
855 adapter
->scan_wait_q_woken
= false;
857 adapter
->workqueue
= create_workqueue("MWIFIEX_WORK_QUEUE");
858 if (!adapter
->workqueue
)
861 INIT_WORK(&adapter
->main_work
, mwifiex_main_work_queue
);
863 /* Register the device. Fill up the private data structure with relevant
864 information from the card. */
865 if (adapter
->if_ops
.register_dev(adapter
)) {
866 pr_err("%s: failed to register mwifiex device\n", __func__
);
867 goto err_registerdev
;
870 if (mwifiex_init_hw_fw(adapter
)) {
871 pr_err("%s: firmware init failed\n", __func__
);
879 pr_debug("info: %s: unregister device\n", __func__
);
880 if (adapter
->if_ops
.unregister_dev
)
881 adapter
->if_ops
.unregister_dev(adapter
);
883 adapter
->surprise_removed
= true;
884 mwifiex_terminate_workqueue(adapter
);
886 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_FW_READY
) ||
887 (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
)) {
888 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
889 adapter
->init_wait_q_woken
= false;
891 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
892 wait_event_interruptible(adapter
->init_wait_q
,
893 adapter
->init_wait_q_woken
);
896 mwifiex_free_adapter(adapter
);
904 EXPORT_SYMBOL_GPL(mwifiex_add_card
);
907 * This function removes the card.
909 * This function follows the following major steps to remove the device -
910 * - Stop data traffic
911 * - Shutdown firmware
912 * - Remove the logical interfaces
913 * - Terminate the work queue
914 * - Unregister the device
915 * - Free the adapter structure
917 int mwifiex_remove_card(struct mwifiex_adapter
*adapter
, struct semaphore
*sem
)
919 struct mwifiex_private
*priv
= NULL
;
922 if (down_interruptible(sem
))
928 /* We can no longer handle interrupts once we start doing the teardown
930 if (adapter
->if_ops
.disable_int
)
931 adapter
->if_ops
.disable_int(adapter
);
933 adapter
->surprise_removed
= true;
936 for (i
= 0; i
< adapter
->priv_num
; i
++) {
937 priv
= adapter
->priv
[i
];
938 if (priv
&& priv
->netdev
) {
939 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
940 if (netif_carrier_ok(priv
->netdev
))
941 netif_carrier_off(priv
->netdev
);
945 dev_dbg(adapter
->dev
, "cmd: calling mwifiex_shutdown_drv...\n");
946 adapter
->init_wait_q_woken
= false;
948 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
949 wait_event_interruptible(adapter
->init_wait_q
,
950 adapter
->init_wait_q_woken
);
951 dev_dbg(adapter
->dev
, "cmd: mwifiex_shutdown_drv done\n");
952 if (atomic_read(&adapter
->rx_pending
) ||
953 atomic_read(&adapter
->tx_pending
) ||
954 atomic_read(&adapter
->cmd_pending
)) {
955 dev_err(adapter
->dev
, "rx_pending=%d, tx_pending=%d, "
957 atomic_read(&adapter
->rx_pending
),
958 atomic_read(&adapter
->tx_pending
),
959 atomic_read(&adapter
->cmd_pending
));
962 for (i
= 0; i
< adapter
->priv_num
; i
++) {
963 priv
= adapter
->priv
[i
];
969 if (priv
->wdev
&& priv
->netdev
)
970 mwifiex_del_virtual_intf(adapter
->wiphy
, priv
->wdev
);
974 priv
= adapter
->priv
[0];
975 if (!priv
|| !priv
->wdev
)
978 wiphy_unregister(priv
->wdev
->wiphy
);
979 wiphy_free(priv
->wdev
->wiphy
);
981 for (i
= 0; i
< adapter
->priv_num
; i
++) {
982 priv
= adapter
->priv
[i
];
987 mwifiex_terminate_workqueue(adapter
);
989 /* Unregister device */
990 dev_dbg(adapter
->dev
, "info: unregister device\n");
991 if (adapter
->if_ops
.unregister_dev
)
992 adapter
->if_ops
.unregister_dev(adapter
);
993 /* Free adapter structure */
994 dev_dbg(adapter
->dev
, "info: free adapter\n");
995 mwifiex_free_adapter(adapter
);
1002 EXPORT_SYMBOL_GPL(mwifiex_remove_card
);
1005 * This function initializes the module.
1007 * The debug FS is also initialized if configured.
1010 mwifiex_init_module(void)
1012 #ifdef CONFIG_DEBUG_FS
1013 mwifiex_debugfs_init();
1019 * This function cleans up the module.
1021 * The debug FS is removed if available.
1024 mwifiex_cleanup_module(void)
1026 #ifdef CONFIG_DEBUG_FS
1027 mwifiex_debugfs_remove();
1031 module_init(mwifiex_init_module
);
1032 module_exit(mwifiex_cleanup_module
);
1034 MODULE_AUTHOR("Marvell International Ltd.");
1035 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION
);
1036 MODULE_VERSION(VERSION
);
1037 MODULE_LICENSE("GPL v2");