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 mod_timer(&adapter
->wakeup_timer
, jiffies
+ (HZ
*3));
241 adapter
->if_ops
.wakeup(adapter
);
245 if (IS_CARD_RX_RCVD(adapter
)) {
246 adapter
->data_received
= false;
247 adapter
->pm_wakeup_fw_try
= false;
248 del_timer_sync(&adapter
->wakeup_timer
);
249 if (adapter
->ps_state
== PS_STATE_SLEEP
)
250 adapter
->ps_state
= PS_STATE_AWAKE
;
252 /* We have tried to wakeup the card already */
253 if (adapter
->pm_wakeup_fw_try
)
255 if (adapter
->ps_state
!= PS_STATE_AWAKE
||
256 adapter
->tx_lock_flag
)
259 if ((!adapter
->scan_chan_gap_enabled
&&
260 adapter
->scan_processing
) || adapter
->data_sent
||
261 mwifiex_wmm_lists_empty(adapter
)) {
262 if (adapter
->cmd_sent
|| adapter
->curr_cmd
||
263 (!is_command_pending(adapter
)))
268 /* Check for event */
269 if (adapter
->event_received
) {
270 adapter
->event_received
= false;
271 mwifiex_process_event(adapter
);
274 /* Check for Cmd Resp */
275 if (adapter
->cmd_resp_received
) {
276 adapter
->cmd_resp_received
= false;
277 mwifiex_process_cmdresp(adapter
);
279 /* call mwifiex back when init_fw is done */
280 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_INIT_DONE
) {
281 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
282 mwifiex_init_fw_complete(adapter
);
286 /* Check if we need to confirm Sleep Request
287 received previously */
288 if (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) {
289 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
)
290 mwifiex_check_ps_cond(adapter
);
293 /* * The ps_state may have been changed during processing of
294 * Sleep Request event.
296 if ((adapter
->ps_state
== PS_STATE_SLEEP
) ||
297 (adapter
->ps_state
== PS_STATE_PRE_SLEEP
) ||
298 (adapter
->ps_state
== PS_STATE_SLEEP_CFM
) ||
299 adapter
->tx_lock_flag
)
302 if (!adapter
->cmd_sent
&& !adapter
->curr_cmd
) {
303 if (mwifiex_exec_next_cmd(adapter
) == -1) {
309 if ((adapter
->scan_chan_gap_enabled
||
310 !adapter
->scan_processing
) &&
311 !adapter
->data_sent
&& !mwifiex_wmm_lists_empty(adapter
)) {
312 mwifiex_wmm_process_tx(adapter
);
313 if (adapter
->hs_activated
) {
314 adapter
->is_hs_configured
= false;
315 mwifiex_hs_activated_event
317 (adapter
, MWIFIEX_BSS_ROLE_ANY
),
322 if (adapter
->delay_null_pkt
&& !adapter
->cmd_sent
&&
323 !adapter
->curr_cmd
&& !is_command_pending(adapter
) &&
324 mwifiex_wmm_lists_empty(adapter
)) {
325 if (!mwifiex_send_null_packet
326 (mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
327 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET
|
328 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET
)) {
329 adapter
->delay_null_pkt
= false;
330 adapter
->ps_state
= PS_STATE_SLEEP
;
336 spin_lock_irqsave(&adapter
->main_proc_lock
, flags
);
337 if (!adapter
->delay_main_work
&&
338 (adapter
->int_status
|| IS_CARD_RX_RCVD(adapter
))) {
339 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
343 adapter
->mwifiex_processing
= false;
344 spin_unlock_irqrestore(&adapter
->main_proc_lock
, flags
);
347 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_CLOSING
)
348 mwifiex_shutdown_drv(adapter
);
351 EXPORT_SYMBOL_GPL(mwifiex_main_process
);
354 * This function frees the adapter structure.
356 * Additionally, this closes the netlink socket, frees the timers
357 * and private structures.
359 static void mwifiex_free_adapter(struct mwifiex_adapter
*adapter
)
362 pr_err("%s: adapter is NULL\n", __func__
);
366 mwifiex_unregister(adapter
);
367 pr_debug("info: %s: free adapter\n", __func__
);
371 * This function cancels all works in the queue and destroys
372 * the main workqueue.
374 static void mwifiex_terminate_workqueue(struct mwifiex_adapter
*adapter
)
376 flush_workqueue(adapter
->workqueue
);
377 destroy_workqueue(adapter
->workqueue
);
378 adapter
->workqueue
= NULL
;
380 if (adapter
->rx_workqueue
) {
381 flush_workqueue(adapter
->rx_workqueue
);
382 destroy_workqueue(adapter
->rx_workqueue
);
383 adapter
->rx_workqueue
= NULL
;
388 * This function gets firmware and initializes it.
390 * The main initialization steps followed are -
391 * - Download the correct firmware to card
392 * - Issue the init commands to firmware
394 static void mwifiex_fw_dpc(const struct firmware
*firmware
, void *context
)
398 struct mwifiex_private
*priv
;
399 struct mwifiex_adapter
*adapter
= context
;
400 struct mwifiex_fw_image fw
;
401 struct semaphore
*sem
= adapter
->card_sem
;
402 bool init_failed
= false;
403 struct wireless_dev
*wdev
;
406 dev_err(adapter
->dev
,
407 "Failed to get firmware %s\n", adapter
->fw_name
);
411 memset(&fw
, 0, sizeof(struct mwifiex_fw_image
));
412 adapter
->firmware
= firmware
;
413 fw
.fw_buf
= (u8
*) adapter
->firmware
->data
;
414 fw
.fw_len
= adapter
->firmware
->size
;
416 if (adapter
->if_ops
.dnld_fw
)
417 ret
= adapter
->if_ops
.dnld_fw(adapter
, &fw
);
419 ret
= mwifiex_dnld_fw(adapter
, &fw
);
423 dev_notice(adapter
->dev
, "WLAN FW is active\n");
426 if ((request_firmware(&adapter
->cal_data
, cal_data_cfg
,
428 dev_err(adapter
->dev
,
429 "Cal data request_firmware() failed\n");
432 /* enable host interrupt after fw dnld is successful */
433 if (adapter
->if_ops
.enable_int
) {
434 if (adapter
->if_ops
.enable_int(adapter
))
438 adapter
->init_wait_q_woken
= false;
439 ret
= mwifiex_init_fw(adapter
);
443 adapter
->hw_status
= MWIFIEX_HW_STATUS_READY
;
446 /* Wait for mwifiex_init to complete */
447 wait_event_interruptible(adapter
->init_wait_q
,
448 adapter
->init_wait_q_woken
);
449 if (adapter
->hw_status
!= MWIFIEX_HW_STATUS_READY
)
452 priv
= adapter
->priv
[MWIFIEX_BSS_ROLE_STA
];
453 if (mwifiex_register_cfg80211(adapter
)) {
454 dev_err(adapter
->dev
, "cannot register with cfg80211\n");
458 if (mwifiex_init_channel_scan_gap(adapter
)) {
459 dev_err(adapter
->dev
, "could not init channel stats table\n");
464 driver_mode
&= MWIFIEX_DRIVER_MODE_BITMASK
;
465 driver_mode
|= MWIFIEX_DRIVER_MODE_STA
;
469 /* Create station interface by default */
470 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "mlan%d",
471 NL80211_IFTYPE_STATION
, NULL
, NULL
);
473 dev_err(adapter
->dev
, "cannot create default STA interface\n");
478 if (driver_mode
& MWIFIEX_DRIVER_MODE_UAP
) {
479 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "uap%d",
480 NL80211_IFTYPE_AP
, NULL
, NULL
);
482 dev_err(adapter
->dev
, "cannot create AP interface\n");
488 if (driver_mode
& MWIFIEX_DRIVER_MODE_P2P
) {
489 wdev
= mwifiex_add_virtual_intf(adapter
->wiphy
, "p2p%d",
490 NL80211_IFTYPE_P2P_CLIENT
, NULL
,
493 dev_err(adapter
->dev
,
494 "cannot create p2p client interface\n");
501 mwifiex_drv_get_driver_version(adapter
, fmt
, sizeof(fmt
) - 1);
502 dev_notice(adapter
->dev
, "driver_version = %s\n", fmt
);
506 wiphy_unregister(adapter
->wiphy
);
507 wiphy_free(adapter
->wiphy
);
509 if (adapter
->if_ops
.disable_int
)
510 adapter
->if_ops
.disable_int(adapter
);
512 pr_debug("info: %s: unregister device\n", __func__
);
513 if (adapter
->if_ops
.unregister_dev
)
514 adapter
->if_ops
.unregister_dev(adapter
);
516 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
) {
517 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
518 adapter
->init_wait_q_woken
= false;
520 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
521 wait_event_interruptible(adapter
->init_wait_q
,
522 adapter
->init_wait_q_woken
);
524 adapter
->surprise_removed
= true;
525 mwifiex_terminate_workqueue(adapter
);
528 if (adapter
->cal_data
) {
529 release_firmware(adapter
->cal_data
);
530 adapter
->cal_data
= NULL
;
532 if (adapter
->firmware
) {
533 release_firmware(adapter
->firmware
);
534 adapter
->firmware
= NULL
;
537 mwifiex_free_adapter(adapter
);
543 * This function initializes the hardware and gets firmware.
545 static int mwifiex_init_hw_fw(struct mwifiex_adapter
*adapter
)
549 ret
= request_firmware_nowait(THIS_MODULE
, 1, adapter
->fw_name
,
550 adapter
->dev
, GFP_KERNEL
, adapter
,
553 dev_err(adapter
->dev
,
554 "request_firmware_nowait() returned error %d\n", ret
);
559 * CFG802.11 network device handler for open.
561 * Starts the data queue.
564 mwifiex_open(struct net_device
*dev
)
566 netif_tx_start_all_queues(dev
);
571 * CFG802.11 network device handler for close.
574 mwifiex_close(struct net_device
*dev
)
576 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
578 if (priv
->scan_request
) {
579 dev_dbg(priv
->adapter
->dev
, "aborting scan on ndo_stop\n");
580 cfg80211_scan_done(priv
->scan_request
, 1);
581 priv
->scan_request
= NULL
;
582 priv
->scan_aborting
= true;
589 * Add buffer into wmm tx queue and queue work to transmit it.
591 int mwifiex_queue_tx_pkt(struct mwifiex_private
*priv
, struct sk_buff
*skb
)
593 struct netdev_queue
*txq
;
594 int index
= mwifiex_1d_to_wmm_queue
[skb
->priority
];
596 if (atomic_inc_return(&priv
->wmm_tx_pending
[index
]) >= MAX_TX_PENDING
) {
597 txq
= netdev_get_tx_queue(priv
->netdev
, index
);
598 if (!netif_tx_queue_stopped(txq
)) {
599 netif_tx_stop_queue(txq
);
600 dev_dbg(priv
->adapter
->dev
, "stop queue: %d\n", index
);
604 atomic_inc(&priv
->adapter
->tx_pending
);
605 mwifiex_wmm_add_buf_txqueue(priv
, skb
);
607 queue_work(priv
->adapter
->workqueue
, &priv
->adapter
->main_work
);
613 mwifiex_clone_skb_for_tx_status(struct mwifiex_private
*priv
,
614 struct sk_buff
*skb
, u8 flag
, u64
*cookie
)
616 struct sk_buff
*orig_skb
= skb
;
617 struct mwifiex_txinfo
*tx_info
, *orig_tx_info
;
619 skb
= skb_clone(skb
, GFP_ATOMIC
);
624 spin_lock_irqsave(&priv
->ack_status_lock
, flags
);
625 id
= idr_alloc(&priv
->ack_status_frames
, orig_skb
,
626 1, 0xff, GFP_ATOMIC
);
627 spin_unlock_irqrestore(&priv
->ack_status_lock
, flags
);
630 tx_info
= MWIFIEX_SKB_TXCB(skb
);
631 tx_info
->ack_frame_id
= id
;
632 tx_info
->flags
|= flag
;
633 orig_tx_info
= MWIFIEX_SKB_TXCB(orig_skb
);
634 orig_tx_info
->ack_frame_id
= id
;
635 orig_tx_info
->flags
|= flag
;
637 if (flag
== MWIFIEX_BUF_FLAG_ACTION_TX_STATUS
&& cookie
)
638 orig_tx_info
->cookie
= *cookie
;
640 } else if (skb_shared(skb
)) {
647 /* couldn't clone -- lose tx status ... */
655 * CFG802.11 network device handler for data transmission.
658 mwifiex_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
660 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
661 struct sk_buff
*new_skb
;
662 struct mwifiex_txinfo
*tx_info
;
665 dev_dbg(priv
->adapter
->dev
, "data: %lu BSS(%d-%d): Data <= kernel\n",
666 jiffies
, priv
->bss_type
, priv
->bss_num
);
668 if (priv
->adapter
->surprise_removed
) {
670 priv
->stats
.tx_dropped
++;
673 if (!skb
->len
|| (skb
->len
> ETH_FRAME_LEN
)) {
674 dev_err(priv
->adapter
->dev
, "Tx: bad skb len %d\n", skb
->len
);
676 priv
->stats
.tx_dropped
++;
679 if (skb_headroom(skb
) < MWIFIEX_MIN_DATA_HEADER_LEN
) {
680 dev_dbg(priv
->adapter
->dev
,
681 "data: Tx: insufficient skb headroom %d\n",
683 /* Insufficient skb headroom - allocate a new skb */
685 skb_realloc_headroom(skb
, MWIFIEX_MIN_DATA_HEADER_LEN
);
686 if (unlikely(!new_skb
)) {
687 dev_err(priv
->adapter
->dev
, "Tx: cannot alloca new_skb\n");
689 priv
->stats
.tx_dropped
++;
694 dev_dbg(priv
->adapter
->dev
, "info: new skb headroomd %d\n",
698 tx_info
= MWIFIEX_SKB_TXCB(skb
);
699 memset(tx_info
, 0, sizeof(*tx_info
));
700 tx_info
->bss_num
= priv
->bss_num
;
701 tx_info
->bss_type
= priv
->bss_type
;
702 tx_info
->pkt_len
= skb
->len
;
704 multicast
= is_multicast_ether_addr(skb
->data
);
706 if (unlikely(!multicast
&& skb
->sk
&&
707 skb_shinfo(skb
)->tx_flags
& SKBTX_WIFI_STATUS
&&
708 priv
->adapter
->fw_api_ver
== MWIFIEX_FW_V15
))
709 skb
= mwifiex_clone_skb_for_tx_status(priv
,
711 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS
, NULL
);
713 /* Record the current time the packet was queued; used to
714 * determine the amount of time the packet was queued in
715 * the driver before it was sent to the firmware.
716 * The delay is then sent along with the packet to the
717 * firmware for aggregate delay calculation for stats and
718 * MSDU lifetime expiry.
720 __net_timestamp(skb
);
722 if (ISSUPP_TDLS_ENABLED(priv
->adapter
->fw_cap_info
) &&
723 priv
->bss_type
== MWIFIEX_BSS_TYPE_STA
&&
724 !ether_addr_equal_unaligned(priv
->cfg_bssid
, skb
->data
)) {
725 if (priv
->adapter
->auto_tdls
&& priv
->check_tdls_tx
)
726 mwifiex_tdls_check_tx(priv
, skb
);
729 mwifiex_queue_tx_pkt(priv
, skb
);
735 * CFG802.11 network device handler for setting MAC address.
738 mwifiex_set_mac_address(struct net_device
*dev
, void *addr
)
740 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
741 struct sockaddr
*hw_addr
= addr
;
744 memcpy(priv
->curr_addr
, hw_addr
->sa_data
, ETH_ALEN
);
746 /* Send request to firmware */
747 ret
= mwifiex_send_cmd(priv
, HostCmd_CMD_802_11_MAC_ADDRESS
,
748 HostCmd_ACT_GEN_SET
, 0, NULL
, true);
751 memcpy(priv
->netdev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
753 dev_err(priv
->adapter
->dev
,
754 "set mac address failed: ret=%d\n", ret
);
756 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
762 * CFG802.11 network device handler for setting multicast list.
764 static void mwifiex_set_multicast_list(struct net_device
*dev
)
766 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
767 struct mwifiex_multicast_list mcast_list
;
769 if (dev
->flags
& IFF_PROMISC
) {
770 mcast_list
.mode
= MWIFIEX_PROMISC_MODE
;
771 } else if (dev
->flags
& IFF_ALLMULTI
||
772 netdev_mc_count(dev
) > MWIFIEX_MAX_MULTICAST_LIST_SIZE
) {
773 mcast_list
.mode
= MWIFIEX_ALL_MULTI_MODE
;
775 mcast_list
.mode
= MWIFIEX_MULTICAST_MODE
;
776 mcast_list
.num_multicast_addr
=
777 mwifiex_copy_mcast_addr(&mcast_list
, dev
);
779 mwifiex_request_set_multicast_list(priv
, &mcast_list
);
783 * CFG802.11 network device handler for transmission timeout.
786 mwifiex_tx_timeout(struct net_device
*dev
)
788 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
790 priv
->num_tx_timeout
++;
791 priv
->tx_timeout_cnt
++;
792 dev_err(priv
->adapter
->dev
,
793 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
794 jiffies
, priv
->tx_timeout_cnt
, priv
->bss_type
, priv
->bss_num
);
795 mwifiex_set_trans_start(dev
);
797 if (priv
->tx_timeout_cnt
> TX_TIMEOUT_THRESHOLD
&&
798 priv
->adapter
->if_ops
.card_reset
) {
799 dev_err(priv
->adapter
->dev
,
800 "tx_timeout_cnt exceeds threshold. Triggering card reset!\n");
801 priv
->adapter
->if_ops
.card_reset(priv
->adapter
);
805 void mwifiex_dump_drv_info(struct mwifiex_adapter
*adapter
)
808 char drv_version
[64];
809 struct usb_card_rec
*cardp
;
810 struct sdio_mmc_card
*sdio_card
;
811 struct mwifiex_private
*priv
;
813 struct netdev_queue
*txq
;
814 struct mwifiex_debug_info
*debug_info
;
816 if (adapter
->drv_info_dump
) {
817 vfree(adapter
->drv_info_dump
);
818 adapter
->drv_info_size
= 0;
821 dev_info(adapter
->dev
, "=== DRIVER INFO DUMP START===\n");
823 adapter
->drv_info_dump
= vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX
);
825 if (!adapter
->drv_info_dump
)
828 p
= (char *)(adapter
->drv_info_dump
);
829 p
+= sprintf(p
, "driver_name = " "\"mwifiex\"\n");
831 mwifiex_drv_get_driver_version(adapter
, drv_version
,
832 sizeof(drv_version
) - 1);
833 p
+= sprintf(p
, "driver_version = %s\n", drv_version
);
835 if (adapter
->iface_type
== MWIFIEX_USB
) {
836 cardp
= (struct usb_card_rec
*)adapter
->card
;
837 p
+= sprintf(p
, "tx_cmd_urb_pending = %d\n",
838 atomic_read(&cardp
->tx_cmd_urb_pending
));
839 p
+= sprintf(p
, "tx_data_urb_pending = %d\n",
840 atomic_read(&cardp
->tx_data_urb_pending
));
841 p
+= sprintf(p
, "rx_cmd_urb_pending = %d\n",
842 atomic_read(&cardp
->rx_cmd_urb_pending
));
843 p
+= sprintf(p
, "rx_data_urb_pending = %d\n",
844 atomic_read(&cardp
->rx_data_urb_pending
));
847 p
+= sprintf(p
, "tx_pending = %d\n",
848 atomic_read(&adapter
->tx_pending
));
849 p
+= sprintf(p
, "rx_pending = %d\n",
850 atomic_read(&adapter
->rx_pending
));
852 if (adapter
->iface_type
== MWIFIEX_SDIO
) {
853 sdio_card
= (struct sdio_mmc_card
*)adapter
->card
;
854 p
+= sprintf(p
, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
855 sdio_card
->mp_rd_bitmap
, sdio_card
->curr_rd_port
);
856 p
+= sprintf(p
, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
857 sdio_card
->mp_wr_bitmap
, sdio_card
->curr_wr_port
);
860 for (i
= 0; i
< adapter
->priv_num
; i
++) {
861 if (!adapter
->priv
[i
] || !adapter
->priv
[i
]->netdev
)
863 priv
= adapter
->priv
[i
];
864 p
+= sprintf(p
, "\n[interface : \"%s\"]\n",
866 p
+= sprintf(p
, "wmm_tx_pending[0] = %d\n",
867 atomic_read(&priv
->wmm_tx_pending
[0]));
868 p
+= sprintf(p
, "wmm_tx_pending[1] = %d\n",
869 atomic_read(&priv
->wmm_tx_pending
[1]));
870 p
+= sprintf(p
, "wmm_tx_pending[2] = %d\n",
871 atomic_read(&priv
->wmm_tx_pending
[2]));
872 p
+= sprintf(p
, "wmm_tx_pending[3] = %d\n",
873 atomic_read(&priv
->wmm_tx_pending
[3]));
874 p
+= sprintf(p
, "media_state=\"%s\"\n", !priv
->media_connected
?
875 "Disconnected" : "Connected");
876 p
+= sprintf(p
, "carrier %s\n", (netif_carrier_ok(priv
->netdev
)
878 for (idx
= 0; idx
< priv
->netdev
->num_tx_queues
; idx
++) {
879 txq
= netdev_get_tx_queue(priv
->netdev
, idx
);
880 p
+= sprintf(p
, "tx queue %d:%s ", idx
,
881 netif_tx_queue_stopped(txq
) ?
882 "stopped" : "started");
884 p
+= sprintf(p
, "\n%s: num_tx_timeout = %d\n",
885 priv
->netdev
->name
, priv
->num_tx_timeout
);
888 if (adapter
->iface_type
== MWIFIEX_SDIO
) {
889 p
+= sprintf(p
, "\n=== SDIO register DUMP===\n");
890 if (adapter
->if_ops
.reg_dump
)
891 p
+= adapter
->if_ops
.reg_dump(adapter
, p
);
894 p
+= sprintf(p
, "\n=== MORE DEBUG INFORMATION\n");
895 debug_info
= kzalloc(sizeof(*debug_info
), GFP_KERNEL
);
897 for (i
= 0; i
< adapter
->priv_num
; i
++) {
898 if (!adapter
->priv
[i
] || !adapter
->priv
[i
]->netdev
)
900 priv
= adapter
->priv
[i
];
901 mwifiex_get_debug_info(priv
, debug_info
);
902 p
+= mwifiex_debug_info_to_buffer(priv
, p
, debug_info
);
908 adapter
->drv_info_size
= p
- adapter
->drv_info_dump
;
909 dev_info(adapter
->dev
, "=== DRIVER INFO DUMP END===\n");
911 EXPORT_SYMBOL_GPL(mwifiex_dump_drv_info
);
914 * CFG802.11 network device handler for statistics retrieval.
916 static struct net_device_stats
*mwifiex_get_stats(struct net_device
*dev
)
918 struct mwifiex_private
*priv
= mwifiex_netdev_get_priv(dev
);
924 mwifiex_netdev_select_wmm_queue(struct net_device
*dev
, struct sk_buff
*skb
,
925 void *accel_priv
, select_queue_fallback_t fallback
)
927 skb
->priority
= cfg80211_classify8021d(skb
, NULL
);
928 return mwifiex_1d_to_wmm_queue
[skb
->priority
];
931 /* Network device handlers */
932 static const struct net_device_ops mwifiex_netdev_ops
= {
933 .ndo_open
= mwifiex_open
,
934 .ndo_stop
= mwifiex_close
,
935 .ndo_start_xmit
= mwifiex_hard_start_xmit
,
936 .ndo_set_mac_address
= mwifiex_set_mac_address
,
937 .ndo_tx_timeout
= mwifiex_tx_timeout
,
938 .ndo_get_stats
= mwifiex_get_stats
,
939 .ndo_set_rx_mode
= mwifiex_set_multicast_list
,
940 .ndo_select_queue
= mwifiex_netdev_select_wmm_queue
,
944 * This function initializes the private structure parameters.
946 * The following wait queues are initialized -
948 * - Command wait queue
949 * - Statistics wait queue
951 * ...and the following default parameters are set -
952 * - Current key index : Set to 0
953 * - Rate index : Set to auto
954 * - Media connected : Set to disconnected
955 * - Adhoc link sensed : Set to false
956 * - Nick name : Set to null
957 * - Number of Tx timeout : Set to 0
958 * - Device address : Set to current address
959 * - Rx histogram statistc : Set to 0
961 * In addition, the CFG80211 work queue is also created.
963 void mwifiex_init_priv_params(struct mwifiex_private
*priv
,
964 struct net_device
*dev
)
966 dev
->netdev_ops
= &mwifiex_netdev_ops
;
967 dev
->destructor
= free_netdev
;
968 /* Initialize private structure */
969 priv
->current_key_index
= 0;
970 priv
->media_connected
= false;
971 memset(&priv
->nick_name
, 0, sizeof(priv
->nick_name
));
972 memset(priv
->mgmt_ie
, 0,
973 sizeof(struct mwifiex_ie
) * MAX_MGMT_IE_INDEX
);
974 priv
->beacon_idx
= MWIFIEX_AUTO_IDX_MASK
;
975 priv
->proberesp_idx
= MWIFIEX_AUTO_IDX_MASK
;
976 priv
->assocresp_idx
= MWIFIEX_AUTO_IDX_MASK
;
977 priv
->rsn_idx
= MWIFIEX_AUTO_IDX_MASK
;
978 priv
->num_tx_timeout
= 0;
979 memcpy(dev
->dev_addr
, priv
->curr_addr
, ETH_ALEN
);
981 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
||
982 GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_UAP
) {
983 priv
->hist_data
= kmalloc(sizeof(*priv
->hist_data
), GFP_KERNEL
);
985 mwifiex_hist_data_reset(priv
);
990 * This function check if command is pending.
992 int is_command_pending(struct mwifiex_adapter
*adapter
)
995 int is_cmd_pend_q_empty
;
997 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, flags
);
998 is_cmd_pend_q_empty
= list_empty(&adapter
->cmd_pending_q
);
999 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, flags
);
1001 return !is_cmd_pend_q_empty
;
1005 * This is the RX work queue function.
1007 * It handles the RX operations.
1009 static void mwifiex_rx_work_queue(struct work_struct
*work
)
1011 struct mwifiex_adapter
*adapter
=
1012 container_of(work
, struct mwifiex_adapter
, rx_work
);
1014 if (adapter
->surprise_removed
)
1016 mwifiex_process_rx(adapter
);
1020 * This is the main work queue function.
1022 * It handles the main process, which in turn handles the complete
1023 * driver operations.
1025 static void mwifiex_main_work_queue(struct work_struct
*work
)
1027 struct mwifiex_adapter
*adapter
=
1028 container_of(work
, struct mwifiex_adapter
, main_work
);
1030 if (adapter
->surprise_removed
)
1032 mwifiex_main_process(adapter
);
1036 * This function adds the card.
1038 * This function follows the following major steps to set up the device -
1039 * - Initialize software. This includes probing the card, registering
1040 * the interface operations table, and allocating/initializing the
1042 * - Set up the netlink socket
1043 * - Create and start the main work queue
1044 * - Register the device
1045 * - Initialize firmware and hardware
1046 * - Add logical interfaces
1049 mwifiex_add_card(void *card
, struct semaphore
*sem
,
1050 struct mwifiex_if_ops
*if_ops
, u8 iface_type
)
1052 struct mwifiex_adapter
*adapter
;
1054 if (down_interruptible(sem
))
1057 if (mwifiex_register(card
, if_ops
, (void **)&adapter
)) {
1058 pr_err("%s: software init failed\n", __func__
);
1062 adapter
->iface_type
= iface_type
;
1063 adapter
->card_sem
= sem
;
1065 adapter
->hw_status
= MWIFIEX_HW_STATUS_INITIALIZING
;
1066 adapter
->surprise_removed
= false;
1067 init_waitqueue_head(&adapter
->init_wait_q
);
1068 adapter
->is_suspended
= false;
1069 adapter
->hs_activated
= false;
1070 init_waitqueue_head(&adapter
->hs_activate_wait_q
);
1071 init_waitqueue_head(&adapter
->cmd_wait_q
.wait
);
1072 adapter
->cmd_wait_q
.status
= 0;
1073 adapter
->scan_wait_q_woken
= false;
1075 if ((num_possible_cpus() > 1) || adapter
->iface_type
== MWIFIEX_USB
) {
1076 adapter
->rx_work_enabled
= true;
1077 pr_notice("rx work enabled, cpus %d\n", num_possible_cpus());
1080 adapter
->workqueue
=
1081 alloc_workqueue("MWIFIEX_WORK_QUEUE",
1082 WQ_HIGHPRI
| WQ_MEM_RECLAIM
| WQ_UNBOUND
, 1);
1083 if (!adapter
->workqueue
)
1086 INIT_WORK(&adapter
->main_work
, mwifiex_main_work_queue
);
1088 if (adapter
->rx_work_enabled
) {
1089 adapter
->rx_workqueue
= alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
1093 if (!adapter
->rx_workqueue
)
1096 INIT_WORK(&adapter
->rx_work
, mwifiex_rx_work_queue
);
1099 if (adapter
->if_ops
.iface_work
)
1100 INIT_WORK(&adapter
->iface_work
, adapter
->if_ops
.iface_work
);
1102 /* Register the device. Fill up the private data structure with relevant
1103 information from the card. */
1104 if (adapter
->if_ops
.register_dev(adapter
)) {
1105 pr_err("%s: failed to register mwifiex device\n", __func__
);
1106 goto err_registerdev
;
1109 if (mwifiex_init_hw_fw(adapter
)) {
1110 pr_err("%s: firmware init failed\n", __func__
);
1117 pr_debug("info: %s: unregister device\n", __func__
);
1118 if (adapter
->if_ops
.unregister_dev
)
1119 adapter
->if_ops
.unregister_dev(adapter
);
1120 if (adapter
->hw_status
== MWIFIEX_HW_STATUS_READY
) {
1121 pr_debug("info: %s: shutdown mwifiex\n", __func__
);
1122 adapter
->init_wait_q_woken
= false;
1124 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
1125 wait_event_interruptible(adapter
->init_wait_q
,
1126 adapter
->init_wait_q_woken
);
1129 adapter
->surprise_removed
= true;
1130 mwifiex_terminate_workqueue(adapter
);
1132 mwifiex_free_adapter(adapter
);
1140 EXPORT_SYMBOL_GPL(mwifiex_add_card
);
1143 * This function removes the card.
1145 * This function follows the following major steps to remove the device -
1146 * - Stop data traffic
1147 * - Shutdown firmware
1148 * - Remove the logical interfaces
1149 * - Terminate the work queue
1150 * - Unregister the device
1151 * - Free the adapter structure
1153 int mwifiex_remove_card(struct mwifiex_adapter
*adapter
, struct semaphore
*sem
)
1155 struct mwifiex_private
*priv
= NULL
;
1158 if (down_interruptible(sem
))
1164 /* We can no longer handle interrupts once we start doing the teardown
1166 if (adapter
->if_ops
.disable_int
)
1167 adapter
->if_ops
.disable_int(adapter
);
1169 adapter
->surprise_removed
= true;
1171 mwifiex_terminate_workqueue(adapter
);
1174 for (i
= 0; i
< adapter
->priv_num
; i
++) {
1175 priv
= adapter
->priv
[i
];
1176 if (priv
&& priv
->netdev
) {
1177 mwifiex_stop_net_dev_queue(priv
->netdev
, adapter
);
1178 if (netif_carrier_ok(priv
->netdev
))
1179 netif_carrier_off(priv
->netdev
);
1183 dev_dbg(adapter
->dev
, "cmd: calling mwifiex_shutdown_drv...\n");
1184 adapter
->init_wait_q_woken
= false;
1186 if (mwifiex_shutdown_drv(adapter
) == -EINPROGRESS
)
1187 wait_event_interruptible(adapter
->init_wait_q
,
1188 adapter
->init_wait_q_woken
);
1189 dev_dbg(adapter
->dev
, "cmd: mwifiex_shutdown_drv done\n");
1190 if (atomic_read(&adapter
->rx_pending
) ||
1191 atomic_read(&adapter
->tx_pending
) ||
1192 atomic_read(&adapter
->cmd_pending
)) {
1193 dev_err(adapter
->dev
, "rx_pending=%d, tx_pending=%d, "
1195 atomic_read(&adapter
->rx_pending
),
1196 atomic_read(&adapter
->tx_pending
),
1197 atomic_read(&adapter
->cmd_pending
));
1200 for (i
= 0; i
< adapter
->priv_num
; i
++) {
1201 priv
= adapter
->priv
[i
];
1207 if (priv
->wdev
&& priv
->netdev
)
1208 mwifiex_del_virtual_intf(adapter
->wiphy
, priv
->wdev
);
1212 wiphy_unregister(adapter
->wiphy
);
1213 wiphy_free(adapter
->wiphy
);
1215 /* Unregister device */
1216 dev_dbg(adapter
->dev
, "info: unregister device\n");
1217 if (adapter
->if_ops
.unregister_dev
)
1218 adapter
->if_ops
.unregister_dev(adapter
);
1219 /* Free adapter structure */
1220 dev_dbg(adapter
->dev
, "info: free adapter\n");
1221 mwifiex_free_adapter(adapter
);
1228 EXPORT_SYMBOL_GPL(mwifiex_remove_card
);
1231 * This function initializes the module.
1233 * The debug FS is also initialized if configured.
1236 mwifiex_init_module(void)
1238 #ifdef CONFIG_DEBUG_FS
1239 mwifiex_debugfs_init();
1245 * This function cleans up the module.
1247 * The debug FS is removed if available.
1250 mwifiex_cleanup_module(void)
1252 #ifdef CONFIG_DEBUG_FS
1253 mwifiex_debugfs_remove();
1257 module_init(mwifiex_init_module
);
1258 module_exit(mwifiex_cleanup_module
);
1260 MODULE_AUTHOR("Marvell International Ltd.");
1261 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION
);
1262 MODULE_VERSION(VERSION
);
1263 MODULE_LICENSE("GPL v2");