2 * Marvell Wireless LAN device driver: major functions
4 * Copyright (C) 2011-2014, 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 unsigned short driver_mode
;
32 module_param(driver_mode
, ushort
, 0);
33 MODULE_PARM_DESC(driver_mode
,
34 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
37 * This function registers the device and performs all the necessary
40 * The following initialization operations are performed -
41 * - Allocate adapter structure
42 * - Save interface specific operations table in adapter
43 * - Call interface specific initialization routine
44 * - Allocate private structures
45 * - Set default adapter structure parameters
48 * In case of any errors during inittialization, this function also ensures
49 * proper cleanup before exiting.
51 static int mwifiex_register(void *card
, struct mwifiex_if_ops
*if_ops
,
54 struct mwifiex_adapter
*adapter
;
57 adapter
= kzalloc(sizeof(struct mwifiex_adapter
), GFP_KERNEL
);
64 /* Save interface specific operations in adapter */
65 memmove(&adapter
->if_ops
, if_ops
, sizeof(struct mwifiex_if_ops
));
67 /* card specific initialization has been deferred until now .. */
68 if (adapter
->if_ops
.init_if
)
69 if (adapter
->if_ops
.init_if(adapter
))
72 adapter
->priv_num
= 0;
74 for (i
= 0; i
< MWIFIEX_MAX_BSS_NUM
; i
++) {
75 /* Allocate memory for private structure */
77 kzalloc(sizeof(struct mwifiex_private
), GFP_KERNEL
);
78 if (!adapter
->priv
[i
])
81 adapter
->priv
[i
]->adapter
= adapter
;
84 mwifiex_init_lock_list(adapter
);
86 init_timer(&adapter
->cmd_timer
);
87 adapter
->cmd_timer
.function
= mwifiex_cmd_timeout_func
;
88 adapter
->cmd_timer
.data
= (unsigned long) adapter
;
93 dev_dbg(adapter
->dev
, "info: leave mwifiex_register with error\n");
95 for (i
= 0; i
< adapter
->priv_num
; i
++)
96 kfree(adapter
->priv
[i
]);
104 * This function unregisters the device and performs all the necessary
107 * The following cleanup operations are performed -
109 * - Free beacon buffers
110 * - Free private structures
111 * - Free adapter structure
113 static int mwifiex_unregister(struct mwifiex_adapter
*adapter
)
117 if (adapter
->if_ops
.cleanup_if
)
118 adapter
->if_ops
.cleanup_if(adapter
);
120 del_timer_sync(&adapter
->cmd_timer
);
122 /* Free private structures */
123 for (i
= 0; i
< adapter
->priv_num
; i
++) {
124 if (adapter
->priv
[i
]) {
125 mwifiex_free_curr_bcn(adapter
->priv
[i
]);
126 kfree(adapter
->priv
[i
]);
130 vfree(adapter
->chan_stats
);
135 static int mwifiex_process_rx(struct mwifiex_adapter
*adapter
)
140 spin_lock_irqsave(&adapter
->rx_proc_lock
, flags
);
141 if (adapter
->rx_processing
|| adapter
->rx_locked
) {
142 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
145 adapter
->rx_processing
= true;
146 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
149 /* Check for Rx data */
150 while ((skb
= skb_dequeue(&adapter
->rx_data_q
))) {
151 atomic_dec(&adapter
->rx_pending
);
152 if ((adapter
->delay_main_work
||
153 adapter
->iface_type
== MWIFIEX_USB
) &&
154 (atomic_read(&adapter
->rx_pending
) < LOW_RX_PENDING
)) {
155 if (adapter
->if_ops
.submit_rem_rx_urbs
)
156 adapter
->if_ops
.submit_rem_rx_urbs(adapter
);
157 adapter
->delay_main_work
= false;
158 queue_work(adapter
->workqueue
, &adapter
->main_work
);
160 mwifiex_handle_rx_packet(adapter
, skb
);
162 spin_lock_irqsave(&adapter
->rx_proc_lock
, flags
);
163 adapter
->rx_processing
= false;
164 spin_unlock_irqrestore(&adapter
->rx_proc_lock
, flags
);
173 * This function is the main procedure of the driver and handles various driver
174 * operations. It runs in a loop and provides the core functionalities.
176 * The main responsibilities of this function are -
177 * - Ensure concurrency control
178 * - Handle pending interrupts and call interrupt handlers
179 * - Wake up the card if required
180 * - Handle command responses and call response handlers
181 * - Handle events and call event handlers
182 * - Execute pending commands
183 * - Transmit pending data packets
185 int mwifiex_main_process(struct mwifiex_adapter
*adapter
)
190 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
192 /* Check if already processing */
193 if (adapter
->mwifiex_processing
) {
194 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
197 adapter
->mwifiex_processing
= true;
198 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
202 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
) ||
203 (adapter
->hw_status
== MWIFIEX_HW_STATUS_NOT_READY
))
206 /* For non-USB interfaces, If we process interrupts first, it
207 * would increase RX pending even further. Avoid this by
208 * checking if rx_pending has crossed high threshold and
209 * schedule rx work queue and then process interrupts.
210 * For USB interface, there are no interrupts. We already have
211 * HIGH_RX_PENDING check in usb.c
213 if (atomic_read(&adapter
->rx_pending
) >= HIGH_RX_PENDING
&&
214 adapter
->iface_type
!= MWIFIEX_USB
) {
215 adapter
->delay_main_work
= true;
216 if (!adapter
->rx_processing
)
217 queue_work(adapter
->rx_workqueue
,
222 /* Handle pending interrupt if any */
223 if (adapter
->int_status
) {
224 if (adapter
->hs_activated
)
225 mwifiex_process_hs_config(adapter
);
226 if (adapter
->if_ops
.process_int_status
)
227 adapter
->if_ops
.process_int_status(adapter
);
230 if (adapter
->rx_work_enabled
&& adapter
->data_received
)
231 queue_work(adapter
->rx_workqueue
, &adapter
->rx_work
);
233 /* Need to wake up the card ? */
234 if ((adapter
->ps_state
== PS_STATE_SLEEP
) &&
235 (adapter
->pm_wakeup_card_req
&&
236 !adapter
->pm_wakeup_fw_try
) &&
237 (is_command_pending(adapter
) ||
238 !mwifiex_wmm_lists_empty(adapter
))) {
239 adapter
->pm_wakeup_fw_try
= true;
240 adapter
->if_ops
.wakeup(adapter
);
244 if (IS_CARD_RX_RCVD(adapter
)) {
245 adapter
->data_received
= false;
246 adapter
->pm_wakeup_fw_try
= false;
247 if (adapter
->ps_state
== PS_STATE_SLEEP
)
248 adapter
->ps_state
= PS_STATE_AWAKE
;
250 /* We have tried to wakeup the card already */
251 if (adapter
->pm_wakeup_fw_try
)
253 if (adapter
->ps_state
!= PS_STATE_AWAKE
||
254 adapter
->tx_lock_flag
)
257 if ((!adapter
->scan_chan_gap_enabled
&&
258 adapter
->scan_processing
) || adapter
->data_sent
||
259 mwifiex_wmm_lists_empty(adapter
)) {
260 if (adapter
->cmd_sent
|| adapter
->curr_cmd
||
261 (!is_command_pending(adapter
)))
266 /* Check for event */
267 if (adapter
->event_received
) {
268 adapter
->event_received
= false;
269 mwifiex_process_event(adapter
);
272 /* Check for Cmd Resp */
273 if (adapter
->cmd_resp_received
) {
274 adapter
->cmd_resp_received
= false;
275 mwifiex_process_cmdresp(adapter
);
277 /* call mwifiex back when init_fw is done */
278 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_INIT_DONE
) {
279 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
280 mwifiex_init_fw_complete(adapter
);
284 /* Check if we need to confirm Sleep Request
285 received previously */
286 if (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) {
287 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
)
288 mwifiex_check_ps_cond(adapter
);
291 /* * The ps_state may have been changed during processing of
292 * Sleep Request event.
294 if ((adapter
->ps_state
== PS_STATE_SLEEP
) ||
295 (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) ||
296 (adapter
->ps_state
== PS_STATE_SLEEP_CFM
) ||
297 adapter
->tx_lock_flag
)
300 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
) {
301 if (mwifiex_exec_next_cmd(adapter
) == -1) {
307 if ((adapter
->scan_chan_gap_enabled
||
308 !adapter
->scan_processing
) &&
309 !adapter
->data_sent
&& !mwifiex_wmm_lists_empty(adapter
)) {
310 mwifiex_wmm_process_tx(adapter
);
311 if (adapter
->hs_activated
) {
312 adapter
->is_hs_configured
= false;
313 mwifiex_hs_activated_event
315 (adapter
, MWIFIEX_BSS_ROLE_ANY
),
320 if (adapter
->delay_null_pkt
&& !adapter
->cmd_sent
&&
321 !adapter
->curr_cmd
&& !is_command_pending(adapter
) &&
322 mwifiex_wmm_lists_empty(adapter
)) {
323 if (!mwifiex_send_null_packet
324 (mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
325 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
|
326 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET
)) {
327 adapter
->delay_null_pkt
= false;
328 adapter
->ps_state
= PS_STATE_SLEEP
;
334 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
335 if (!adapter
->delay_main_work
&&
336 (adapter
->int_status
|| IS_CARD_RX_RCVD(adapter
))) {
337 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
341 adapter
->mwifiex_processing
= false;
342 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
345 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
)
346 mwifiex_shutdown_drv(adapter
);
349 EXPORT_SYMBOL_GPL(mwifiex_main_process
);
352 * This function frees the adapter structure.
354 * Additionally, this closes the netlink socket, frees the timers
355 * and private structures.
357 static void mwifiex_free_adapter(struct mwifiex_adapter
*adapter
)
360 pr_err("%s: adapter is NULL\n", __func__
);
364 mwifiex_unregister(adapter
);
365 pr_debug("info: %s: free adapter\n", __func__
);
369 * This function cancels all works in the queue and destroys
370 * the main workqueue.
372 static void mwifiex_terminate_workqueue(struct mwifiex_adapter
*adapter
)
374 flush_workqueue(adapter
->workqueue
);
375 destroy_workqueue(adapter
->workqueue
);
376 adapter
->workqueue
= NULL
;
378 if (adapter
->rx_workqueue
) {
379 flush_workqueue(adapter
->rx_workqueue
);
380 destroy_workqueue(adapter
->rx_workqueue
);
381 adapter
->rx_workqueue
= NULL
;
386 * This function gets firmware and initializes it.
388 * The main initialization steps followed are -
389 * - Download the correct firmware to card
390 * - Issue the init commands to firmware
392 static void mwifiex_fw_dpc(const struct firmware
*firmware
, void *context
)
396 struct mwifiex_private
*priv
;
397 struct mwifiex_adapter
*adapter
= context
;
398 struct mwifiex_fw_image fw
;
399 struct semaphore
*sem
= adapter
->card_sem
;
400 bool init_failed
= false;
401 struct wireless_dev
*wdev
;
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 if (adapter
->if_ops
.enable_int(adapter
))
436 adapter
->init_wait_q_woken
= false;
437 ret
= mwifiex_init_fw(adapter
);
441 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
444 /* Wait for mwifiex_init to complete */
445 wait_event_interruptible(adapter
->init_wait_q
,
446 adapter
->init_wait_q_woken
);
447 if (adapter
->hw_status
!= MWIFIEX_HW_STATUS_READY
)
450 priv
= adapter
->priv
[MWIFIEX_BSS_ROLE_STA
];
451 if (mwifiex_register_cfg80211(adapter
)) {
452 dev_err(adapter
->dev
, "cannot register with cfg80211\n");
456 if (mwifiex_init_channel_scan_gap(adapter
)) {
457 dev_err(adapter
->dev
, "could not init channel stats table\n");
462 driver_mode
&= MWIFIEX_DRIVER_MODE_BITMASK
;
463 driver_mode
|= MWIFIEX_DRIVER_MODE_STA
;
467 /* Create station interface by default */
468 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "mlan%d",
469 NL80211_IFTYPE_STATION
, NULL
, NULL
);
471 dev_err(adapter
->dev
, "cannot create default STA interface\n");
476 if (driver_mode
& MWIFIEX_DRIVER_MODE_UAP
) {
477 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "uap%d",
478 NL80211_IFTYPE_AP
, NULL
, NULL
);
480 dev_err(adapter
->dev
, "cannot create AP interface\n");
486 if (driver_mode
& MWIFIEX_DRIVER_MODE_P2P
) {
487 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "p2p%d",
488 NL80211_IFTYPE_P2P_CLIENT
, NULL
,
491 dev_err(adapter
->dev
,
492 "cannot create p2p client interface\n");
499 mwifiex_drv_get_driver_version(adapter
, fmt
, sizeof(fmt
) - 1);
500 dev_notice(adapter
->dev
, "driver_version = %s\n", fmt
);
504 wiphy_unregister(adapter
->wiphy
);
505 wiphy_free(adapter
->wiphy
);
507 if (adapter
->if_ops
.disable_int
)
508 adapter
->if_ops
.disable_int(adapter
);
510 pr_debug("info: %s: unregister device\n", __func__
);
511 if (adapter
->if_ops
.unregister_dev
)
512 adapter
->if_ops
.unregister_dev(adapter
);
514 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_FW_READY
) ||
515 (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
)) {
516 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
517 adapter
->init_wait_q_woken
= false;
519 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
520 wait_event_interruptible(adapter
->init_wait_q
,
521 adapter
->init_wait_q_woken
);
523 adapter
->surprise_removed
= true;
524 mwifiex_terminate_workqueue(adapter
);
527 if (adapter
->cal_data
) {
528 release_firmware(adapter
->cal_data
);
529 adapter
->cal_data
= NULL
;
531 if (adapter
->firmware
) {
532 release_firmware(adapter
->firmware
);
533 adapter
->firmware
= NULL
;
536 mwifiex_free_adapter(adapter
);
542 * This function initializes the hardware and gets firmware.
544 static int mwifiex_init_hw_fw(struct mwifiex_adapter
*adapter
)
548 ret
= request_firmware_nowait(THIS_MODULE
, 1, adapter
->fw_name
,
549 adapter
->dev
, GFP_KERNEL
, adapter
,
552 dev_err(adapter
->dev
,
553 "request_firmware_nowait() returned error %d\n", ret
);
558 * CFG802.11 network device handler for open.
560 * Starts the data queue.
563 mwifiex_open(struct net_device
*dev
)
565 netif_tx_start_all_queues(dev
);
570 * CFG802.11 network device handler for close.
573 mwifiex_close(struct net_device
*dev
)
575 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
577 if (priv
->scan_request
) {
578 dev_dbg(priv
->adapter
->dev
, "aborting scan on ndo_stop\n");
579 cfg80211_scan_done(priv
->scan_request
, 1);
580 priv
->scan_request
= NULL
;
581 priv
->scan_aborting
= true;
588 * Add buffer into wmm tx queue and queue work to transmit it.
590 int mwifiex_queue_tx_pkt(struct mwifiex_private
*priv
, struct sk_buff
*skb
)
592 struct netdev_queue
*txq
;
593 int index
= mwifiex_1d_to_wmm_queue
[skb
->priority
];
595 if (atomic_inc_return(&priv
->wmm_tx_pending
[index
]) >= MAX_TX_PENDING
) {
596 txq
= netdev_get_tx_queue(priv
->netdev
, index
);
597 if (!netif_tx_queue_stopped(txq
)) {
598 netif_tx_stop_queue(txq
);
599 dev_dbg(priv
->adapter
->dev
, "stop queue: %d\n", index
);
603 atomic_inc(&priv
->adapter
->tx_pending
);
604 mwifiex_wmm_add_buf_txqueue(priv
, skb
);
606 queue_work(priv
->adapter
->workqueue
, &priv
->adapter
->main_work
);
612 mwifiex_clone_skb_for_tx_status(struct mwifiex_private
*priv
,
613 struct sk_buff
*skb
, u8 flag
, u64
*cookie
)
615 struct sk_buff
*orig_skb
= skb
;
616 struct mwifiex_txinfo
*tx_info
, *orig_tx_info
;
618 skb
= skb_clone(skb
, GFP_ATOMIC
);
623 spin_lock_irqsave(&priv
->ack_status_lock
, flags
);
624 id
= idr_alloc(&priv
->ack_status_frames
, orig_skb
,
625 1, 0xff, GFP_ATOMIC
);
626 spin_unlock_irqrestore(&priv
->ack_status_lock
, flags
);
629 tx_info
= MWIFIEX_SKB_TXCB(skb
);
630 tx_info
->ack_frame_id
= id
;
631 tx_info
->flags
|= flag
;
632 orig_tx_info
= MWIFIEX_SKB_TXCB(orig_skb
);
633 orig_tx_info
->ack_frame_id
= id
;
634 orig_tx_info
->flags
|= flag
;
636 if (flag
== MWIFIEX_BUF_FLAG_ACTION_TX_STATUS
&& cookie
)
637 orig_tx_info
->cookie
= *cookie
;
639 } else if (skb_shared(skb
)) {
646 /* couldn't clone -- lose tx status ... */
654 * CFG802.11 network device handler for data transmission.
657 mwifiex_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
659 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
660 struct sk_buff
*new_skb
;
661 struct mwifiex_txinfo
*tx_info
;
664 dev_dbg(priv
->adapter
->dev
, "data: %lu BSS(%d-%d): Data <= kernel\n",
665 jiffies
, priv
->bss_type
, priv
->bss_num
);
667 if (priv
->adapter
->surprise_removed
) {
669 priv
->stats
.tx_dropped
++;
672 if (!skb
->len
|| (skb
->len
> ETH_FRAME_LEN
)) {
673 dev_err(priv
->adapter
->dev
, "Tx: bad skb len %d\n", skb
->len
);
675 priv
->stats
.tx_dropped
++;
678 if (skb_headroom(skb
) < MWIFIEX_MIN_DATA_HEADER_LEN
) {
679 dev_dbg(priv
->adapter
->dev
,
680 "data: Tx: insufficient skb headroom %d\n",
682 /* Insufficient skb headroom - allocate a new skb */
684 skb_realloc_headroom(skb
, MWIFIEX_MIN_DATA_HEADER_LEN
);
685 if (unlikely(!new_skb
)) {
686 dev_err(priv
->adapter
->dev
, "Tx: cannot alloca new_skb\n");
688 priv
->stats
.tx_dropped
++;
693 dev_dbg(priv
->adapter
->dev
, "info: new skb headroomd %d\n",
697 tx_info
= MWIFIEX_SKB_TXCB(skb
);
698 memset(tx_info
, 0, sizeof(*tx_info
));
699 tx_info
->bss_num
= priv
->bss_num
;
700 tx_info
->bss_type
= priv
->bss_type
;
701 tx_info
->pkt_len
= skb
->len
;
703 multicast
= is_multicast_ether_addr(skb
->data
);
705 if (unlikely(!multicast
&& skb
->sk
&&
706 skb_shinfo(skb
)->tx_flags
& SKBTX_WIFI_STATUS
&&
707 priv
->adapter
->fw_api_ver
== MWIFIEX_FW_V15
))
708 skb
= mwifiex_clone_skb_for_tx_status(priv
,
710 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS
, NULL
);
712 /* Record the current time the packet was queued; used to
713 * determine the amount of time the packet was queued in
714 * the driver before it was sent to the firmware.
715 * The delay is then sent along with the packet to the
716 * firmware for aggregate delay calculation for stats and
717 * MSDU lifetime expiry.
719 __net_timestamp(skb
);
721 if (ISSUPP_TDLS_ENABLED(priv
->adapter
->fw_cap_info
) &&
722 priv
->bss_type
== MWIFIEX_BSS_TYPE_STA
&&
723 !ether_addr_equal_unaligned(priv
->cfg_bssid
, skb
->data
)) {
724 if (priv
->adapter
->auto_tdls
&& priv
->check_tdls_tx
)
725 mwifiex_tdls_check_tx(priv
, skb
);
728 mwifiex_queue_tx_pkt(priv
, skb
);
734 * CFG802.11 network device handler for setting MAC address.
737 mwifiex_set_mac_address(struct net_device
*dev
, void *addr
)
739 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
740 struct sockaddr
*hw_addr
= addr
;
743 memcpy(priv
->curr_addr
, hw_addr
->sa_data
, ETH_ALEN
);
745 /* Send request to firmware */
746 ret
= mwifiex_send_cmd(priv
, HostCmd_CMD_802_11_MAC_ADDRESS
,
747 HostCmd_ACT_GEN_SET
, 0, NULL
, true);
750 memcpy(priv
->netdev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
752 dev_err(priv
->adapter
->dev
,
753 "set mac address failed: ret=%d\n", ret
);
755 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
761 * CFG802.11 network device handler for setting multicast list.
763 static void mwifiex_set_multicast_list(struct net_device
*dev
)
765 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
766 struct mwifiex_multicast_list mcast_list
;
768 if (dev
->flags
& IFF_PROMISC
) {
769 mcast_list
.mode
= MWIFIEX_PROMISC_MODE
;
770 } else if (dev
->flags
& IFF_ALLMULTI
||
771 netdev_mc_count(dev
) > MWIFIEX_MAX_MULTICAST_LIST_SIZE
) {
772 mcast_list
.mode
= MWIFIEX_ALL_MULTI_MODE
;
774 mcast_list
.mode
= MWIFIEX_MULTICAST_MODE
;
775 mcast_list
.num_multicast_addr
=
776 mwifiex_copy_mcast_addr(&mcast_list
, dev
);
778 mwifiex_request_set_multicast_list(priv
, &mcast_list
);
782 * CFG802.11 network device handler for transmission timeout.
785 mwifiex_tx_timeout(struct net_device
*dev
)
787 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
789 priv
->num_tx_timeout
++;
790 priv
->tx_timeout_cnt
++;
791 dev_err(priv
->adapter
->dev
,
792 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
793 jiffies
, priv
->tx_timeout_cnt
, priv
->bss_type
, priv
->bss_num
);
794 mwifiex_set_trans_start(dev
);
796 if (priv
->tx_timeout_cnt
> TX_TIMEOUT_THRESHOLD
&&
797 priv
->adapter
->if_ops
.card_reset
) {
798 dev_err(priv
->adapter
->dev
,
799 "tx_timeout_cnt exceeds threshold. Triggering card reset!\n");
800 priv
->adapter
->if_ops
.card_reset(priv
->adapter
);
805 * CFG802.11 network device handler for statistics retrieval.
807 static struct net_device_stats
*mwifiex_get_stats(struct net_device
*dev
)
809 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
815 mwifiex_netdev_select_wmm_queue(struct net_device
*dev
, struct sk_buff
*skb
,
816 void *accel_priv
, select_queue_fallback_t fallback
)
818 skb
->priority
= cfg80211_classify8021d(skb
, NULL
);
819 return mwifiex_1d_to_wmm_queue
[skb
->priority
];
822 /* Network device handlers */
823 static const struct net_device_ops mwifiex_netdev_ops
= {
824 .ndo_open
= mwifiex_open
,
825 .ndo_stop
= mwifiex_close
,
826 .ndo_start_xmit
= mwifiex_hard_start_xmit
,
827 .ndo_set_mac_address
= mwifiex_set_mac_address
,
828 .ndo_tx_timeout
= mwifiex_tx_timeout
,
829 .ndo_get_stats
= mwifiex_get_stats
,
830 .ndo_set_rx_mode
= mwifiex_set_multicast_list
,
831 .ndo_select_queue
= mwifiex_netdev_select_wmm_queue
,
835 * This function initializes the private structure parameters.
837 * The following wait queues are initialized -
839 * - Command wait queue
840 * - Statistics wait queue
842 * ...and the following default parameters are set -
843 * - Current key index : Set to 0
844 * - Rate index : Set to auto
845 * - Media connected : Set to disconnected
846 * - Adhoc link sensed : Set to false
847 * - Nick name : Set to null
848 * - Number of Tx timeout : Set to 0
849 * - Device address : Set to current address
851 * In addition, the CFG80211 work queue is also created.
853 void mwifiex_init_priv_params(struct mwifiex_private
*priv
,
854 struct net_device
*dev
)
856 dev
->netdev_ops
= &mwifiex_netdev_ops
;
857 dev
->destructor
= free_netdev
;
858 /* Initialize private structure */
859 priv
->current_key_index
= 0;
860 priv
->media_connected
= false;
861 memset(&priv
->nick_name
, 0, sizeof(priv
->nick_name
));
862 memset(priv
->mgmt_ie
, 0,
863 sizeof(struct mwifiex_ie
) * MAX_MGMT_IE_INDEX
);
864 priv
->beacon_idx
= MWIFIEX_AUTO_IDX_MASK
;
865 priv
->proberesp_idx
= MWIFIEX_AUTO_IDX_MASK
;
866 priv
->assocresp_idx
= MWIFIEX_AUTO_IDX_MASK
;
867 priv
->rsn_idx
= MWIFIEX_AUTO_IDX_MASK
;
868 priv
->num_tx_timeout
= 0;
869 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
873 * This function check if command is pending.
875 int is_command_pending(struct mwifiex_adapter
*adapter
)
878 int is_cmd_pend_q_empty
;
880 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, flags
);
881 is_cmd_pend_q_empty
= list_empty(&adapter
->cmd_pending_q
);
882 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, flags
);
884 return !is_cmd_pend_q_empty
;
888 * This is the RX work queue function.
890 * It handles the RX operations.
892 static void mwifiex_rx_work_queue(struct work_struct
*work
)
894 struct mwifiex_adapter
*adapter
=
895 container_of(work
, struct mwifiex_adapter
, rx_work
);
897 if (adapter
->surprise_removed
)
899 mwifiex_process_rx(adapter
);
903 * This is the main work queue function.
905 * It handles the main process, which in turn handles the complete
908 static void mwifiex_main_work_queue(struct work_struct
*work
)
910 struct mwifiex_adapter
*adapter
=
911 container_of(work
, struct mwifiex_adapter
, main_work
);
913 if (adapter
->surprise_removed
)
915 mwifiex_main_process(adapter
);
919 * This function adds the card.
921 * This function follows the following major steps to set up the device -
922 * - Initialize software. This includes probing the card, registering
923 * the interface operations table, and allocating/initializing the
925 * - Set up the netlink socket
926 * - Create and start the main work queue
927 * - Register the device
928 * - Initialize firmware and hardware
929 * - Add logical interfaces
932 mwifiex_add_card(void *card
, struct semaphore
*sem
,
933 struct mwifiex_if_ops
*if_ops
, u8 iface_type
)
935 struct mwifiex_adapter
*adapter
;
937 if (down_interruptible(sem
))
940 if (mwifiex_register(card
, if_ops
, (void **)&adapter
)) {
941 pr_err("%s: software init failed\n", __func__
);
945 adapter
->iface_type
= iface_type
;
946 adapter
->card_sem
= sem
;
948 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
949 adapter
->surprise_removed
= false;
950 init_waitqueue_head(&adapter
->init_wait_q
);
951 adapter
->is_suspended
= false;
952 adapter
->hs_activated
= false;
953 init_waitqueue_head(&adapter
->hs_activate_wait_q
);
954 init_waitqueue_head(&adapter
->cmd_wait_q
.wait
);
955 adapter
->cmd_wait_q
.status
= 0;
956 adapter
->scan_wait_q_woken
= false;
958 if ((num_possible_cpus() > 1) || adapter
->iface_type
== MWIFIEX_USB
) {
959 adapter
->rx_work_enabled
= true;
960 pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
964 alloc_workqueue("MWIFIEX_WORK_QUEUE",
965 WQ_HIGHPRI
| WQ_MEM_RECLAIM
| WQ_UNBOUND
, 1);
966 if (!adapter
->workqueue
)
969 INIT_WORK(&adapter
->main_work
, mwifiex_main_work_queue
);
971 if (adapter
->rx_work_enabled
) {
972 adapter
->rx_workqueue
= alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
976 if (!adapter
->rx_workqueue
)
979 INIT_WORK(&adapter
->rx_work
, mwifiex_rx_work_queue
);
982 if (adapter
->if_ops
.iface_work
)
983 INIT_WORK(&adapter
->iface_work
, adapter
->if_ops
.iface_work
);
985 /* Register the device. Fill up the private data structure with relevant
986 information from the card. */
987 if (adapter
->if_ops
.register_dev(adapter
)) {
988 pr_err("%s: failed to register mwifiex device\n", __func__
);
989 goto err_registerdev
;
992 if (mwifiex_init_hw_fw(adapter
)) {
993 pr_err("%s: firmware init failed\n", __func__
);
1000 pr_debug("info: %s: unregister device\n", __func__
);
1001 if (adapter
->if_ops
.unregister_dev
)
1002 adapter
->if_ops
.unregister_dev(adapter
);
1003 if ((adapter
->hw_status
== MWIFIEX_HW_STATUS_FW_READY
) ||
1004 (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
)) {
1005 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
1006 adapter
->init_wait_q_woken
= false;
1008 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
1009 wait_event_interruptible(adapter
->init_wait_q
,
1010 adapter
->init_wait_q_woken
);
1013 adapter
->surprise_removed
= true;
1014 mwifiex_terminate_workqueue(adapter
);
1016 mwifiex_free_adapter(adapter
);
1024 EXPORT_SYMBOL_GPL(mwifiex_add_card
);
1027 * This function removes the card.
1029 * This function follows the following major steps to remove the device -
1030 * - Stop data traffic
1031 * - Shutdown firmware
1032 * - Remove the logical interfaces
1033 * - Terminate the work queue
1034 * - Unregister the device
1035 * - Free the adapter structure
1037 int mwifiex_remove_card(struct mwifiex_adapter
*adapter
, struct semaphore
*sem
)
1039 struct mwifiex_private
*priv
= NULL
;
1042 if (down_interruptible(sem
))
1048 /* We can no longer handle interrupts once we start doing the teardown
1050 if (adapter
->if_ops
.disable_int
)
1051 adapter
->if_ops
.disable_int(adapter
);
1053 adapter
->surprise_removed
= true;
1056 for (i
= 0; i
< adapter
->priv_num
; i
++) {
1057 priv
= adapter
->priv
[i
];
1058 if (priv
&& priv
->netdev
) {
1059 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
1060 if (netif_carrier_ok(priv
->netdev
))
1061 netif_carrier_off(priv
->netdev
);
1065 dev_dbg(adapter
->dev
, "cmd: calling mwifiex_shutdown_drv...\n");
1066 adapter
->init_wait_q_woken
= false;
1068 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
1069 wait_event_interruptible(adapter
->init_wait_q
,
1070 adapter
->init_wait_q_woken
);
1071 dev_dbg(adapter
->dev
, "cmd: mwifiex_shutdown_drv done\n");
1072 if (atomic_read(&adapter
->rx_pending
) ||
1073 atomic_read(&adapter
->tx_pending
) ||
1074 atomic_read(&adapter
->cmd_pending
)) {
1075 dev_err(adapter
->dev
, "rx_pending=%d, tx_pending=%d, "
1077 atomic_read(&adapter
->rx_pending
),
1078 atomic_read(&adapter
->tx_pending
),
1079 atomic_read(&adapter
->cmd_pending
));
1082 for (i
= 0; i
< adapter
->priv_num
; i
++) {
1083 priv
= adapter
->priv
[i
];
1089 if (priv
->wdev
&& priv
->netdev
)
1090 mwifiex_del_virtual_intf(adapter
->wiphy
, priv
->wdev
);
1094 wiphy_unregister(adapter
->wiphy
);
1095 wiphy_free(adapter
->wiphy
);
1097 mwifiex_terminate_workqueue(adapter
);
1099 /* Unregister device */
1100 dev_dbg(adapter
->dev
, "info: unregister device\n");
1101 if (adapter
->if_ops
.unregister_dev
)
1102 adapter
->if_ops
.unregister_dev(adapter
);
1103 /* Free adapter structure */
1104 dev_dbg(adapter
->dev
, "info: free adapter\n");
1105 mwifiex_free_adapter(adapter
);
1112 EXPORT_SYMBOL_GPL(mwifiex_remove_card
);
1115 * This function initializes the module.
1117 * The debug FS is also initialized if configured.
1120 mwifiex_init_module(void)
1122 #ifdef CONFIG_DEBUG_FS
1123 mwifiex_debugfs_init();
1129 * This function cleans up the module.
1131 * The debug FS is removed if available.
1134 mwifiex_cleanup_module(void)
1136 #ifdef CONFIG_DEBUG_FS
1137 mwifiex_debugfs_remove();
1141 module_init(mwifiex_init_module
);
1142 module_exit(mwifiex_cleanup_module
);
1144 MODULE_AUTHOR("Marvell International Ltd.");
1145 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION
);
1146 MODULE_VERSION(VERSION
);
1147 MODULE_LICENSE("GPL v2");