2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
7 #include <linux/delay.h>
8 #include <linux/freezer.h>
9 #include <linux/etherdevice.h>
10 #include <linux/netdevice.h>
11 #include <linux/if_arp.h>
13 #include <net/iw_handler.h>
24 #define DRIVER_RELEASE_VERSION "320.p0"
25 const char libertas_driver_version
[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
32 static struct pm_dev
*wlan_pm_dev
= NULL
;
35 #define WLAN_TX_PWR_DEFAULT 20 /*100mW */
36 #define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */
37 #define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */
38 #define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */
39 #define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */
41 /* Format { channel, frequency (MHz), maxtxpower } */
42 /* band: 'B/G', region: USA FCC/Canada IC */
43 static struct chan_freq_power channel_freq_power_US_BG
[] = {
44 {1, 2412, WLAN_TX_PWR_US_DEFAULT
},
45 {2, 2417, WLAN_TX_PWR_US_DEFAULT
},
46 {3, 2422, WLAN_TX_PWR_US_DEFAULT
},
47 {4, 2427, WLAN_TX_PWR_US_DEFAULT
},
48 {5, 2432, WLAN_TX_PWR_US_DEFAULT
},
49 {6, 2437, WLAN_TX_PWR_US_DEFAULT
},
50 {7, 2442, WLAN_TX_PWR_US_DEFAULT
},
51 {8, 2447, WLAN_TX_PWR_US_DEFAULT
},
52 {9, 2452, WLAN_TX_PWR_US_DEFAULT
},
53 {10, 2457, WLAN_TX_PWR_US_DEFAULT
},
54 {11, 2462, WLAN_TX_PWR_US_DEFAULT
}
57 /* band: 'B/G', region: Europe ETSI */
58 static struct chan_freq_power channel_freq_power_EU_BG
[] = {
59 {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT
},
60 {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT
},
61 {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT
},
62 {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT
},
63 {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT
},
64 {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT
},
65 {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT
},
66 {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT
},
67 {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT
},
68 {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT
},
69 {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT
},
70 {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT
},
71 {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT
}
74 /* band: 'B/G', region: Spain */
75 static struct chan_freq_power channel_freq_power_SPN_BG
[] = {
76 {10, 2457, WLAN_TX_PWR_DEFAULT
},
77 {11, 2462, WLAN_TX_PWR_DEFAULT
}
80 /* band: 'B/G', region: France */
81 static struct chan_freq_power channel_freq_power_FR_BG
[] = {
82 {10, 2457, WLAN_TX_PWR_FR_DEFAULT
},
83 {11, 2462, WLAN_TX_PWR_FR_DEFAULT
},
84 {12, 2467, WLAN_TX_PWR_FR_DEFAULT
},
85 {13, 2472, WLAN_TX_PWR_FR_DEFAULT
}
88 /* band: 'B/G', region: Japan */
89 static struct chan_freq_power channel_freq_power_JPN_BG
[] = {
90 {1, 2412, WLAN_TX_PWR_JP_DEFAULT
},
91 {2, 2417, WLAN_TX_PWR_JP_DEFAULT
},
92 {3, 2422, WLAN_TX_PWR_JP_DEFAULT
},
93 {4, 2427, WLAN_TX_PWR_JP_DEFAULT
},
94 {5, 2432, WLAN_TX_PWR_JP_DEFAULT
},
95 {6, 2437, WLAN_TX_PWR_JP_DEFAULT
},
96 {7, 2442, WLAN_TX_PWR_JP_DEFAULT
},
97 {8, 2447, WLAN_TX_PWR_JP_DEFAULT
},
98 {9, 2452, WLAN_TX_PWR_JP_DEFAULT
},
99 {10, 2457, WLAN_TX_PWR_JP_DEFAULT
},
100 {11, 2462, WLAN_TX_PWR_JP_DEFAULT
},
101 {12, 2467, WLAN_TX_PWR_JP_DEFAULT
},
102 {13, 2472, WLAN_TX_PWR_JP_DEFAULT
},
103 {14, 2484, WLAN_TX_PWR_JP_DEFAULT
}
107 * the structure for channel, frequency and power
109 struct region_cfp_table
{
111 struct chan_freq_power
*cfp_BG
;
116 * the structure for the mapping between region and CFP
118 static struct region_cfp_table region_cfp_table
[] = {
120 channel_freq_power_US_BG
,
121 sizeof(channel_freq_power_US_BG
) / sizeof(struct chan_freq_power
),
124 {0x20, /*CANADA IC */
125 channel_freq_power_US_BG
,
126 sizeof(channel_freq_power_US_BG
) / sizeof(struct chan_freq_power
),
129 {0x30, /*EU*/ channel_freq_power_EU_BG
,
130 sizeof(channel_freq_power_EU_BG
) / sizeof(struct chan_freq_power
),
133 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG
,
134 sizeof(channel_freq_power_SPN_BG
) / sizeof(struct chan_freq_power
),
137 {0x32, /*FRANCE*/ channel_freq_power_FR_BG
,
138 sizeof(channel_freq_power_FR_BG
) / sizeof(struct chan_freq_power
),
141 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG
,
142 sizeof(channel_freq_power_JPN_BG
) / sizeof(struct chan_freq_power
),
145 /*Add new region here */
149 * the rates supported by the card
151 u8 libertas_wlan_data_rates
[WLAN_SUPPORTED_RATES
] =
152 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
153 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
157 * the rates supported
159 u8 libertas_supported_rates
[G_SUPPORTED_RATES
] =
160 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
164 * the rates supported for ad-hoc G mode
166 u8 libertas_adhoc_rates_g
[G_SUPPORTED_RATES
] =
167 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
171 * the rates supported for ad-hoc B mode
173 u8 libertas_adhoc_rates_b
[4] = { 0x82, 0x84, 0x8b, 0x96 };
176 * the global variable of a pointer to wlan_private
179 static wlan_private
*wlanpriv
= NULL
;
182 static struct net_device
*libertas_devs
[MAX_DEVS
];
183 static int libertas_found
= 0;
186 * the table to keep region code
188 u16 libertas_region_code_to_index
[MRVDRV_MAX_REGION_CODE
] =
189 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
191 static u8
*default_fw_name
= "usb8388.bin";
194 * Attributes exported through sysfs
198 * @brief Get function for sysfs attribute libertas_mpp
200 static ssize_t
libertas_mpp_get(struct device
* dev
,
201 struct device_attribute
*attr
, char * buf
) {
202 struct cmd_ds_mesh_access mesh_access
;
204 memset(&mesh_access
, 0, sizeof(mesh_access
));
205 libertas_prepare_and_send_command(to_net_dev(dev
)->priv
,
207 cmd_act_mesh_get_mpp
,
208 cmd_option_waitforrsp
, 0, (void *)&mesh_access
);
210 return snprintf(buf
, 3, "%d\n", mesh_access
.data
[0]);
214 * @brief Set function for sysfs attribute libertas_mpp
216 static ssize_t
libertas_mpp_set(struct device
* dev
,
217 struct device_attribute
*attr
, const char * buf
, size_t count
) {
218 struct cmd_ds_mesh_access mesh_access
;
221 memset(&mesh_access
, 0, sizeof(mesh_access
));
222 sscanf(buf
, "%d", &(mesh_access
.data
[0]));
223 libertas_prepare_and_send_command((to_net_dev(dev
))->priv
,
225 cmd_act_mesh_set_mpp
,
226 cmd_option_waitforrsp
, 0, (void *)&mesh_access
);
231 * libertas_mpp attribute to be exported per mshX interface
232 * through sysfs (/sys/class/net/mshX/libertas-mpp)
234 static DEVICE_ATTR(libertas_mpp
, 0644, libertas_mpp_get
,
238 * @brief Check if the device can be open and wait if necessary.
240 * @param dev A pointer to net_device structure
243 * For USB adapter, on some systems the device open handler will be
244 * called before FW ready. Use the following flag check and wait
245 * function to work around the issue.
248 static int pre_open_check(struct net_device
*dev
) {
249 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
250 wlan_adapter
*adapter
= priv
->adapter
;
253 while (!adapter
->fw_ready
&& i
< 20) {
255 msleep_interruptible(100);
257 if (!adapter
->fw_ready
) {
258 lbs_pr_info("FW not ready, pre_open_check() return failure\n");
267 * @brief This function opens the device
269 * @param dev A pointer to net_device structure
272 static int wlan_dev_open(struct net_device
*dev
)
274 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
275 wlan_adapter
*adapter
= priv
->adapter
;
282 if (adapter
->connect_status
== libertas_connected
) {
283 netif_carrier_on(priv
->wlan_dev
.netdev
);
285 netif_carrier_off(priv
->wlan_dev
.netdev
);
291 * @brief This function opens the mshX interface
293 * @param dev A pointer to net_device structure
296 static int mesh_open(struct net_device
*dev
)
298 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
300 if(pre_open_check(dev
) == -1)
302 priv
->mesh_open
= 1 ;
303 netif_start_queue(priv
->mesh_dev
);
304 if (priv
->infra_open
== 0)
305 return wlan_dev_open(priv
->wlan_dev
.netdev
) ;
310 * @brief This function opens the ethX interface
312 * @param dev A pointer to net_device structure
315 static int wlan_open(struct net_device
*dev
)
317 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
319 if(pre_open_check(dev
) == -1)
321 priv
->infra_open
= 1 ;
322 netif_wake_queue(priv
->wlan_dev
.netdev
);
324 return wlan_dev_open(priv
->wlan_dev
.netdev
) ;
328 static int wlan_dev_close(struct net_device
*dev
)
330 wlan_private
*priv
= dev
->priv
;
334 netif_carrier_off(priv
->wlan_dev
.netdev
);
342 * @brief This function closes the mshX interface
344 * @param dev A pointer to net_device structure
347 static int mesh_close(struct net_device
*dev
)
349 wlan_private
*priv
= (wlan_private
*) (dev
->priv
);
352 netif_stop_queue(priv
->mesh_dev
);
353 if (priv
->infra_open
== 0)
354 return wlan_dev_close( ((wlan_private
*) dev
->priv
)->wlan_dev
.netdev
) ;
360 * @brief This function closes the ethX interface
362 * @param dev A pointer to net_device structure
365 static int wlan_close(struct net_device
*dev
) {
366 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
368 netif_stop_queue(priv
->wlan_dev
.netdev
);
369 priv
->infra_open
= 0;
370 if (priv
->mesh_open
== 0)
371 return wlan_dev_close( ((wlan_private
*) dev
->priv
)->wlan_dev
.netdev
) ;
380 * @brief This function is a callback function. it is called by
381 * kernel to enter or exit power saving mode.
383 * @param pmdev A pointer to pm_dev
384 * @param pmreq pm_request_t
385 * @param pmdata A pointer to pmdata
388 static int wlan_pm_callback(struct pm_dev
*pmdev
, pm_request_t pmreq
,
391 wlan_private
*priv
= wlanpriv
;
392 wlan_adapter
*adapter
= priv
->adapter
;
393 struct net_device
*dev
= priv
->wlan_dev
.netdev
;
395 lbs_pr_debug(1, "WPRM_PM_CALLBACK: pmreq = %d.\n", pmreq
);
399 lbs_pr_debug(1, "WPRM_PM_CALLBACK: enter PM_SUSPEND.\n");
401 /* in associated mode */
402 if (adapter
->connect_status
== libertas_connected
) {
403 if ((adapter
->psstate
!= PS_STATE_SLEEP
)
406 "wlan_pm_callback: can't enter sleep mode\n");
411 * Detach the network interface
412 * if the network is running
414 if (netif_running(dev
)) {
415 netif_device_detach(dev
);
417 "netif_device_detach().\n");
419 libertas_sbi_suspend(priv
);
424 /* in non associated mode */
427 * Detach the network interface
428 * if the network is running
430 if (netif_running(dev
))
431 netif_device_detach(dev
);
434 * Storing and restoring of the regs be taken care
435 * at the driver rest will be done at wlan driver
436 * this makes driver independent of the card
439 libertas_sbi_suspend(priv
);
444 /* in associated mode */
445 if (adapter
->connect_status
== libertas_connected
) {
448 * Bring the inteface up first
449 * This case should not happen still ...
451 libertas_sbi_resume(priv
);
454 * Attach the network interface
455 * if the network is running
457 if (netif_running(dev
)) {
458 netif_device_attach(dev
);
460 "after netif_device_attach().\n");
463 "After netif attach, in associated mode.\n");
468 /* in non associated mode */
471 * Bring the inteface up first
472 * This case should not happen still ...
475 libertas_sbi_resume(priv
);
477 if (netif_running(dev
))
478 netif_device_attach(dev
);
480 lbs_pr_debug(1, "after netif attach, in NON associated mode.\n");
486 #endif /* ENABLE_PM */
488 static int wlan_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
491 wlan_private
*priv
= dev
->priv
;
495 if (priv
->wlan_dev
.dnld_sent
|| priv
->adapter
->TxLockFlag
) {
496 priv
->stats
.tx_dropped
++;
500 netif_stop_queue(priv
->wlan_dev
.netdev
);
502 if (libertas_process_tx(priv
, skb
) == 0)
503 dev
->trans_start
= jiffies
;
510 * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
513 static int mesh_pre_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
515 wlan_private
*priv
= dev
->priv
;
520 return wlan_hard_start_xmit(skb
, priv
->wlan_dev
.netdev
);
524 * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
527 static int wlan_pre_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
) {
529 UNSET_MESH_FRAME(skb
);
531 return wlan_hard_start_xmit(skb
, dev
);
534 static void wlan_tx_timeout(struct net_device
*dev
)
536 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
540 lbs_pr_err("tx watch dog timeout!\n");
542 priv
->wlan_dev
.dnld_sent
= DNLD_RES_RECEIVED
;
543 dev
->trans_start
= jiffies
;
545 if (priv
->adapter
->currenttxskb
) {
546 if (priv
->adapter
->radiomode
== WLAN_RADIOMODE_RADIOTAP
) {
547 /* If we are here, we have not received feedback from
548 the previous packet. Assume TX_FAIL and move on. */
549 priv
->adapter
->eventcause
= 0x01000000;
550 libertas_send_tx_feedback(priv
);
552 wake_up_interruptible(&priv
->mainthread
.waitq
);
553 } else if (priv
->adapter
->connect_status
== libertas_connected
)
554 netif_wake_queue(priv
->wlan_dev
.netdev
);
560 * @brief This function returns the network statistics
562 * @param dev A pointer to wlan_private structure
563 * @return A pointer to net_device_stats structure
565 static struct net_device_stats
*wlan_get_stats(struct net_device
*dev
)
567 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
572 static int wlan_set_mac_address(struct net_device
*dev
, void *addr
)
575 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
576 wlan_adapter
*adapter
= priv
->adapter
;
577 struct sockaddr
*phwaddr
= addr
;
581 memset(adapter
->current_addr
, 0, ETH_ALEN
);
583 /* dev->dev_addr is 8 bytes */
584 lbs_dbg_hex("dev->dev_addr:", dev
->dev_addr
, ETH_ALEN
);
586 lbs_dbg_hex("addr:", phwaddr
->sa_data
, ETH_ALEN
);
587 memcpy(adapter
->current_addr
, phwaddr
->sa_data
, ETH_ALEN
);
589 ret
= libertas_prepare_and_send_command(priv
, cmd_802_11_mac_address
,
591 cmd_option_waitforrsp
, 0, NULL
);
594 lbs_pr_debug(1, "set mac address failed.\n");
599 lbs_dbg_hex("adapter->macaddr:", adapter
->current_addr
, ETH_ALEN
);
600 memcpy(dev
->dev_addr
, adapter
->current_addr
, ETH_ALEN
);
601 memcpy(((wlan_private
*) dev
->priv
)->mesh_dev
->dev_addr
, adapter
->current_addr
, ETH_ALEN
);
608 static int wlan_copy_multicast_address(wlan_adapter
* adapter
,
609 struct net_device
*dev
)
612 struct dev_mc_list
*mcptr
= dev
->mc_list
;
614 for (i
= 0; i
< dev
->mc_count
; i
++) {
615 memcpy(&adapter
->multicastlist
[i
], mcptr
->dmi_addr
, ETH_ALEN
);
623 static void wlan_set_multicast_list(struct net_device
*dev
)
625 wlan_private
*priv
= dev
->priv
;
626 wlan_adapter
*adapter
= priv
->adapter
;
631 oldpacketfilter
= adapter
->currentpacketfilter
;
633 if (dev
->flags
& IFF_PROMISC
) {
634 lbs_pr_debug(1, "enable Promiscuous mode\n");
635 adapter
->currentpacketfilter
|=
636 cmd_act_mac_promiscuous_enable
;
637 adapter
->currentpacketfilter
&=
638 ~(cmd_act_mac_all_multicast_enable
|
639 cmd_act_mac_multicast_enable
);
642 adapter
->currentpacketfilter
&=
643 ~cmd_act_mac_promiscuous_enable
;
645 if (dev
->flags
& IFF_ALLMULTI
|| dev
->mc_count
>
646 MRVDRV_MAX_MULTICAST_LIST_SIZE
) {
647 lbs_pr_debug(1, "Enabling All Multicast!\n");
648 adapter
->currentpacketfilter
|=
649 cmd_act_mac_all_multicast_enable
;
650 adapter
->currentpacketfilter
&=
651 ~cmd_act_mac_multicast_enable
;
653 adapter
->currentpacketfilter
&=
654 ~cmd_act_mac_all_multicast_enable
;
656 if (!dev
->mc_count
) {
657 lbs_pr_debug(1, "No multicast addresses - "
658 "disabling multicast!\n");
659 adapter
->currentpacketfilter
&=
660 ~cmd_act_mac_multicast_enable
;
664 adapter
->currentpacketfilter
|=
665 cmd_act_mac_multicast_enable
;
667 adapter
->nr_of_multicastmacaddr
=
668 wlan_copy_multicast_address(adapter
, dev
);
670 lbs_pr_debug(1, "Multicast addresses: %d\n",
673 for (i
= 0; i
< dev
->mc_count
; i
++) {
674 lbs_pr_debug(1, "Multicast address %d:"
675 "%x %x %x %x %x %x\n", i
,
676 adapter
->multicastlist
[i
][0],
677 adapter
->multicastlist
[i
][1],
678 adapter
->multicastlist
[i
][2],
679 adapter
->multicastlist
[i
][3],
680 adapter
->multicastlist
[i
][4],
681 adapter
->multicastlist
[i
][5]);
683 /* set multicast addresses to firmware */
684 libertas_prepare_and_send_command(priv
,
685 cmd_mac_multicast_adr
,
692 if (adapter
->currentpacketfilter
!= oldpacketfilter
) {
693 libertas_set_mac_packet_filter(priv
);
700 * @brief This function hanldes the major job in WLAN driver.
701 * it handles the event generated by firmware, rx data received
702 * from firmware and tx data sent from kernel.
704 * @param data A pointer to wlan_thread structure
707 static int wlan_service_main_thread(void *data
)
709 struct wlan_thread
*thread
= data
;
710 wlan_private
*priv
= thread
->priv
;
711 wlan_adapter
*adapter
= priv
->adapter
;
717 wlan_activate_thread(thread
);
719 init_waitqueue_entry(&wait
, current
);
722 lbs_pr_debug(1, "main-thread 111: intcounter=%d "
723 "currenttxskb=%p dnld_sent=%d\n",
725 adapter
->currenttxskb
, priv
->wlan_dev
.dnld_sent
);
727 add_wait_queue(&thread
->waitq
, &wait
);
728 set_current_state(TASK_INTERRUPTIBLE
);
729 spin_lock_irq(&adapter
->driver_lock
);
730 if ((adapter
->psstate
== PS_STATE_SLEEP
) ||
731 (!adapter
->intcounter
732 && (priv
->wlan_dev
.dnld_sent
|| adapter
->cur_cmd
||
733 list_empty(&adapter
->cmdpendingq
)))) {
735 "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
736 adapter
->connect_status
, adapter
->intcounter
,
737 adapter
->psmode
, adapter
->psstate
);
738 spin_unlock_irq(&adapter
->driver_lock
);
741 spin_unlock_irq(&adapter
->driver_lock
);
745 "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
746 "dnld_sent=%d\n", adapter
->intcounter
,
747 adapter
->currenttxskb
, priv
->wlan_dev
.dnld_sent
);
749 set_current_state(TASK_RUNNING
);
750 remove_wait_queue(&thread
->waitq
, &wait
);
753 lbs_pr_debug(1, "main-thread 333: intcounter=%d currenttxskb=%p "
756 adapter
->currenttxskb
, priv
->wlan_dev
.dnld_sent
);
758 if (kthread_should_stop()
759 || adapter
->surpriseremoved
) {
761 "main-thread: break from main thread: surpriseremoved=0x%x\n",
762 adapter
->surpriseremoved
);
767 spin_lock_irq(&adapter
->driver_lock
);
768 if (adapter
->intcounter
) {
770 adapter
->intcounter
= 0;
771 int_status
= libertas_sbi_get_int_status(priv
, &ireg
);
775 "main-thread: reading HOST_INT_STATUS_REG failed\n");
776 spin_unlock_irq(&adapter
->driver_lock
);
779 adapter
->hisregcpy
|= ireg
;
782 lbs_pr_debug(1, "main-thread 444: intcounter=%d currenttxskb=%p "
785 adapter
->currenttxskb
, priv
->wlan_dev
.dnld_sent
);
787 /* command response? */
788 if (adapter
->hisregcpy
& his_cmdupldrdy
) {
789 lbs_pr_debug(1, "main-thread: cmd response ready.\n");
791 adapter
->hisregcpy
&= ~his_cmdupldrdy
;
792 spin_unlock_irq(&adapter
->driver_lock
);
793 libertas_process_rx_command(priv
);
794 spin_lock_irq(&adapter
->driver_lock
);
798 if (adapter
->hisregcpy
& his_cardevent
) {
799 lbs_pr_debug(1, "main-thread: Card Event Activity.\n");
801 adapter
->hisregcpy
&= ~his_cardevent
;
803 if (libertas_sbi_read_event_cause(priv
)) {
805 "main-thread: libertas_sbi_read_event_cause failed.\n");
806 spin_unlock_irq(&adapter
->driver_lock
);
809 spin_unlock_irq(&adapter
->driver_lock
);
810 libertas_process_event(priv
);
812 spin_unlock_irq(&adapter
->driver_lock
);
814 /* Check if we need to confirm Sleep Request received previously */
815 if (adapter
->psstate
== PS_STATE_PRE_SLEEP
) {
816 if (!priv
->wlan_dev
.dnld_sent
&& !adapter
->cur_cmd
) {
817 if (adapter
->connect_status
==
818 libertas_connected
) {
820 "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
821 "dnld_sent=%d cur_cmd=%p, confirm now\n",
823 adapter
->currenttxskb
,
824 priv
->wlan_dev
.dnld_sent
,
827 libertas_ps_confirm_sleep(priv
,
828 (u16
) adapter
->psmode
);
830 /* workaround for firmware sending
831 * deauth/linkloss event immediately
832 * after sleep request, remove this
833 * after firmware fixes it
835 adapter
->psstate
= PS_STATE_AWAKE
;
837 "main-thread: ignore PS_SleepConfirm in non-connected state\n");
842 /* The PS state is changed during processing of Sleep Request
845 if ((priv
->adapter
->psstate
== PS_STATE_SLEEP
) ||
846 (priv
->adapter
->psstate
== PS_STATE_PRE_SLEEP
))
849 /* Execute the next command */
850 if (!priv
->wlan_dev
.dnld_sent
&& !priv
->adapter
->cur_cmd
)
851 libertas_execute_next_command(priv
);
853 /* Wake-up command waiters which can't sleep in
854 * libertas_prepare_and_send_command
856 if (!adapter
->nr_cmd_pending
)
857 wake_up_all(&adapter
->cmd_pending
);
859 libertas_tx_runqueue(priv
);
862 del_timer(&adapter
->command_timer
);
863 adapter
->nr_cmd_pending
= 0;
864 wake_up_all(&adapter
->cmd_pending
);
865 wlan_deactivate_thread(thread
);
872 * @brief This function adds the card. it will probe the
873 * card, allocate the wlan_priv and initialize the device.
875 * @param card A pointer to card
876 * @return A pointer to wlan_private structure
878 wlan_private
*wlan_add_card(void *card
)
880 struct net_device
*dev
= NULL
;
881 struct net_device
*mesh_dev
= NULL
;
882 wlan_private
*priv
= NULL
;
886 /* Allocate an Ethernet device and register it */
887 if (!(dev
= alloc_etherdev(sizeof(wlan_private
)))) {
888 lbs_pr_alert( "Init ethernet device failed!\n");
894 /* allocate buffer for wlan_adapter */
895 if (!(priv
->adapter
= kmalloc(sizeof(wlan_adapter
), GFP_KERNEL
))) {
896 lbs_pr_alert( "Allocate buffer for wlan_adapter failed!\n");
900 /* Allocate a virtual mesh device */
901 if (!(mesh_dev
= alloc_netdev(0, "msh%d", ether_setup
))) {
902 lbs_pr_debug(1, "Init ethernet device failed!\n");
906 /* Both intervaces share the priv structure */
907 mesh_dev
->priv
= priv
;
909 /* init wlan_adapter */
910 memset(priv
->adapter
, 0, sizeof(wlan_adapter
));
912 priv
->wlan_dev
.netdev
= dev
;
913 priv
->wlan_dev
.card
= card
;
915 priv
->infra_open
= 0;
916 priv
->mesh_dev
= mesh_dev
;
919 SET_MODULE_OWNER(dev
);
920 SET_MODULE_OWNER(mesh_dev
);
922 /* Setup the OS Interface to our functions */
923 dev
->open
= wlan_open
;
924 dev
->hard_start_xmit
= wlan_pre_start_xmit
;
925 dev
->stop
= wlan_close
;
926 dev
->do_ioctl
= libertas_do_ioctl
;
927 dev
->set_mac_address
= wlan_set_mac_address
;
928 mesh_dev
->open
= mesh_open
;
929 mesh_dev
->hard_start_xmit
= mesh_pre_start_xmit
;
930 mesh_dev
->stop
= mesh_close
;
931 mesh_dev
->do_ioctl
= libertas_do_ioctl
;
932 memcpy(mesh_dev
->dev_addr
, wlanpriv
->wlan_dev
.netdev
->dev_addr
,
933 sizeof(wlanpriv
->wlan_dev
.netdev
->dev_addr
));
935 #define WLAN_WATCHDOG_TIMEOUT (5 * HZ)
937 dev
->tx_timeout
= wlan_tx_timeout
;
938 dev
->get_stats
= wlan_get_stats
;
939 dev
->watchdog_timeo
= WLAN_WATCHDOG_TIMEOUT
;
940 dev
->ethtool_ops
= &libertas_ethtool_ops
;
941 mesh_dev
->get_stats
= wlan_get_stats
;
942 mesh_dev
->ethtool_ops
= &libertas_ethtool_ops
;
945 dev
->wireless_handlers
= (struct iw_handler_def
*)&libertas_handler_def
;
946 mesh_dev
->wireless_handlers
= (struct iw_handler_def
*)&libertas_handler_def
;
948 #define NETIF_F_DYNALLOC 16
949 dev
->features
|= NETIF_F_DYNALLOC
;
950 dev
->flags
|= IFF_BROADCAST
| IFF_MULTICAST
;
951 dev
->set_multicast_list
= wlan_set_multicast_list
;
953 INIT_LIST_HEAD(&priv
->adapter
->cmdfreeq
);
954 INIT_LIST_HEAD(&priv
->adapter
->cmdpendingq
);
956 spin_lock_init(&priv
->adapter
->driver_lock
);
957 init_waitqueue_head(&priv
->adapter
->cmd_pending
);
958 priv
->adapter
->nr_cmd_pending
= 0;
960 lbs_pr_debug(1, "Starting kthread...\n");
961 priv
->mainthread
.priv
= priv
;
962 wlan_create_thread(wlan_service_main_thread
,
963 &priv
->mainthread
, "wlan_main_service");
966 create_singlethread_workqueue("libertas_assoc");
967 INIT_DELAYED_WORK(&priv
->assoc_work
, wlan_association_worker
);
970 * Register the device. Fillup the private data structure with
971 * relevant information from the card and request for the required
974 if (libertas_sbi_register_dev(priv
) < 0) {
975 lbs_pr_info("failed to register wlan device!\n");
976 goto err_registerdev
;
980 if (libertas_init_fw(priv
)) {
981 lbs_pr_debug(1, "Firmware Init failed\n");
982 goto err_registerdev
;
985 if (register_netdev(dev
)) {
986 lbs_pr_err("Cannot register network device!\n");
990 /* Register virtual mesh interface */
991 if (register_netdev(mesh_dev
)) {
992 lbs_pr_info("Cannot register mesh virtual interface!\n");
996 lbs_pr_info("%s: Marvell Wlan 802.11 adapter ", dev
->name
);
998 libertas_debugfs_init_one(priv
, dev
);
1000 if (libertas_found
== MAX_DEVS
)
1002 libertas_devs
[libertas_found
] = dev
;
1005 if (!(wlan_pm_dev
= pm_register(PM_UNKNOWN_DEV
, 0, wlan_pm_callback
)))
1006 lbs_pr_alert( "failed to register PM callback\n");
1008 if (device_create_file(&(mesh_dev
->dev
), &dev_attr_libertas_mpp
))
1009 goto err_create_file
;
1015 device_remove_file(&(mesh_dev
->dev
), &dev_attr_libertas_mpp
);
1017 libertas_sbi_unregister_dev(priv
);
1019 destroy_workqueue(priv
->assoc_thread
);
1020 /* Stop the thread servicing the interrupts */
1021 wake_up_interruptible(&priv
->mainthread
.waitq
);
1022 wlan_terminate_thread(&priv
->mainthread
);
1023 kfree(priv
->adapter
);
1026 free_netdev(mesh_dev
);
1033 static void wake_pending_cmdnodes(wlan_private
*priv
)
1035 struct cmd_ctrl_node
*cmdnode
;
1036 unsigned long flags
;
1038 spin_lock_irqsave(&priv
->adapter
->driver_lock
, flags
);
1039 list_for_each_entry(cmdnode
, &priv
->adapter
->cmdpendingq
, list
) {
1040 cmdnode
->cmdwaitqwoken
= 1;
1041 wake_up_interruptible(&cmdnode
->cmdwait_q
);
1043 spin_unlock_irqrestore(&priv
->adapter
->driver_lock
, flags
);
1047 int wlan_remove_card(void *card
)
1049 wlan_private
*priv
= libertas_sbi_get_priv(card
);
1050 wlan_adapter
*adapter
;
1051 struct net_device
*dev
;
1052 struct net_device
*mesh_dev
;
1053 union iwreq_data wrqu
;
1063 adapter
= priv
->adapter
;
1070 dev
= priv
->wlan_dev
.netdev
;
1071 mesh_dev
= priv
->mesh_dev
;
1073 netif_stop_queue(mesh_dev
);
1074 netif_stop_queue(priv
->wlan_dev
.netdev
);
1075 netif_carrier_off(priv
->wlan_dev
.netdev
);
1077 wake_pending_cmdnodes(priv
);
1079 device_remove_file(&(mesh_dev
->dev
), &dev_attr_libertas_mpp
);
1080 unregister_netdev(mesh_dev
);
1081 unregister_netdev(dev
);
1083 cancel_delayed_work(&priv
->assoc_work
);
1084 destroy_workqueue(priv
->assoc_thread
);
1086 if (adapter
->psmode
== wlan802_11powermodemax_psp
) {
1087 adapter
->psmode
= wlan802_11powermodecam
;
1088 libertas_ps_wakeup(priv
, cmd_option_waitforrsp
);
1091 memset(wrqu
.ap_addr
.sa_data
, 0xaa, ETH_ALEN
);
1092 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
1093 wireless_send_event(priv
->wlan_dev
.netdev
, SIOCGIWAP
, &wrqu
, NULL
);
1096 pm_unregister(wlan_pm_dev
);
1099 adapter
->surpriseremoved
= 1;
1101 /* Stop the thread servicing the interrupts */
1102 wlan_terminate_thread(&priv
->mainthread
);
1104 libertas_debugfs_remove_one(priv
);
1106 lbs_pr_debug(1, "Free adapter\n");
1107 libertas_free_adapter(priv
);
1109 for (i
= 0; i
<libertas_found
; i
++) {
1110 if (libertas_devs
[i
]==priv
->wlan_dev
.netdev
) {
1111 libertas_devs
[i
] = libertas_devs
[--libertas_found
];
1112 libertas_devs
[libertas_found
] = NULL
;
1117 lbs_pr_debug(1, "Unregister finish\n");
1119 priv
->wlan_dev
.netdev
= NULL
;
1120 priv
->mesh_dev
= NULL
;
1121 free_netdev(mesh_dev
);
1130 * @brief This function finds the CFP in
1131 * region_cfp_table based on region and band parameter.
1133 * @param region The region code
1134 * @param band The band
1135 * @param cfp_no A pointer to CFP number
1136 * @return A pointer to CFP
1138 struct chan_freq_power
*libertas_get_region_cfp_table(u8 region
, u8 band
, int *cfp_no
)
1144 end
= sizeof(region_cfp_table
)/sizeof(struct region_cfp_table
);
1146 for (i
= 0; i
< end
; i
++) {
1147 lbs_pr_debug(1, "region_cfp_table[i].region=%d\n",
1148 region_cfp_table
[i
].region
);
1149 if (region_cfp_table
[i
].region
== region
) {
1150 *cfp_no
= region_cfp_table
[i
].cfp_no_BG
;
1152 return region_cfp_table
[i
].cfp_BG
;
1160 int libertas_set_regiontable(wlan_private
* priv
, u8 region
, u8 band
)
1162 wlan_adapter
*adapter
= priv
->adapter
;
1165 struct chan_freq_power
*cfp
;
1170 memset(adapter
->region_channel
, 0, sizeof(adapter
->region_channel
));
1173 cfp
= libertas_get_region_cfp_table(region
, band
, &cfp_no
);
1175 adapter
->region_channel
[i
].nrcfp
= cfp_no
;
1176 adapter
->region_channel
[i
].CFP
= cfp
;
1178 lbs_pr_debug(1, "wrong region code %#x in band B-G\n",
1182 adapter
->region_channel
[i
].valid
= 1;
1183 adapter
->region_channel
[i
].region
= region
;
1184 adapter
->region_channel
[i
].band
= band
;
1192 * @brief This function handles the interrupt. it will change PS
1193 * state if applicable. it will wake up main_thread to handle
1194 * the interrupt event as well.
1196 * @param dev A pointer to net_device structure
1199 void libertas_interrupt(struct net_device
*dev
)
1201 wlan_private
*priv
= dev
->priv
;
1205 lbs_pr_debug(1, "libertas_interrupt: intcounter=%d\n",
1206 priv
->adapter
->intcounter
);
1208 priv
->adapter
->intcounter
++;
1210 if (priv
->adapter
->psstate
== PS_STATE_SLEEP
) {
1211 priv
->adapter
->psstate
= PS_STATE_AWAKE
;
1212 netif_wake_queue(dev
);
1215 wake_up_interruptible(&priv
->mainthread
.waitq
);
1220 static int wlan_init_module(void)
1226 if (libertas_fw_name
== NULL
) {
1227 libertas_fw_name
= default_fw_name
;
1230 libertas_debugfs_init();
1232 if (libertas_sbi_register()) {
1234 libertas_debugfs_remove();
1243 static void wlan_cleanup_module(void)
1249 for (i
= 0; i
<libertas_found
; i
++) {
1250 wlan_private
*priv
= libertas_devs
[i
]->priv
;
1254 libertas_sbi_unregister();
1255 libertas_debugfs_remove();
1260 module_init(wlan_init_module
);
1261 module_exit(wlan_cleanup_module
);
1263 MODULE_DESCRIPTION("M-WLAN Driver");
1264 MODULE_AUTHOR("Marvell International Ltd.");
1265 MODULE_LICENSE("GPL");