2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/freezer.h>
10 #include <linux/etherdevice.h>
11 #include <linux/netdevice.h>
12 #include <linux/if_arp.h>
13 #include <linux/kthread.h>
15 #include <net/iw_handler.h>
16 #include <net/ieee80211.h>
25 #define DRIVER_RELEASE_VERSION "322.p1"
26 const char libertas_driver_version
[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
33 /* Module parameters */
34 unsigned int libertas_debug
= 0;
35 module_param(libertas_debug
, int, 0644);
36 EXPORT_SYMBOL_GPL(libertas_debug
);
39 #define WLAN_TX_PWR_DEFAULT 20 /*100mW */
40 #define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */
41 #define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */
42 #define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */
43 #define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */
45 /* Format { channel, frequency (MHz), maxtxpower } */
46 /* band: 'B/G', region: USA FCC/Canada IC */
47 static struct chan_freq_power channel_freq_power_US_BG
[] = {
48 {1, 2412, WLAN_TX_PWR_US_DEFAULT
},
49 {2, 2417, WLAN_TX_PWR_US_DEFAULT
},
50 {3, 2422, WLAN_TX_PWR_US_DEFAULT
},
51 {4, 2427, WLAN_TX_PWR_US_DEFAULT
},
52 {5, 2432, WLAN_TX_PWR_US_DEFAULT
},
53 {6, 2437, WLAN_TX_PWR_US_DEFAULT
},
54 {7, 2442, WLAN_TX_PWR_US_DEFAULT
},
55 {8, 2447, WLAN_TX_PWR_US_DEFAULT
},
56 {9, 2452, WLAN_TX_PWR_US_DEFAULT
},
57 {10, 2457, WLAN_TX_PWR_US_DEFAULT
},
58 {11, 2462, WLAN_TX_PWR_US_DEFAULT
}
61 /* band: 'B/G', region: Europe ETSI */
62 static struct chan_freq_power channel_freq_power_EU_BG
[] = {
63 {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT
},
64 {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT
},
65 {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT
},
66 {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT
},
67 {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT
},
68 {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT
},
69 {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT
},
70 {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT
},
71 {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT
},
72 {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT
},
73 {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT
},
74 {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT
},
75 {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT
}
78 /* band: 'B/G', region: Spain */
79 static struct chan_freq_power channel_freq_power_SPN_BG
[] = {
80 {10, 2457, WLAN_TX_PWR_DEFAULT
},
81 {11, 2462, WLAN_TX_PWR_DEFAULT
}
84 /* band: 'B/G', region: France */
85 static struct chan_freq_power channel_freq_power_FR_BG
[] = {
86 {10, 2457, WLAN_TX_PWR_FR_DEFAULT
},
87 {11, 2462, WLAN_TX_PWR_FR_DEFAULT
},
88 {12, 2467, WLAN_TX_PWR_FR_DEFAULT
},
89 {13, 2472, WLAN_TX_PWR_FR_DEFAULT
}
92 /* band: 'B/G', region: Japan */
93 static struct chan_freq_power channel_freq_power_JPN_BG
[] = {
94 {1, 2412, WLAN_TX_PWR_JP_DEFAULT
},
95 {2, 2417, WLAN_TX_PWR_JP_DEFAULT
},
96 {3, 2422, WLAN_TX_PWR_JP_DEFAULT
},
97 {4, 2427, WLAN_TX_PWR_JP_DEFAULT
},
98 {5, 2432, WLAN_TX_PWR_JP_DEFAULT
},
99 {6, 2437, WLAN_TX_PWR_JP_DEFAULT
},
100 {7, 2442, WLAN_TX_PWR_JP_DEFAULT
},
101 {8, 2447, WLAN_TX_PWR_JP_DEFAULT
},
102 {9, 2452, WLAN_TX_PWR_JP_DEFAULT
},
103 {10, 2457, WLAN_TX_PWR_JP_DEFAULT
},
104 {11, 2462, WLAN_TX_PWR_JP_DEFAULT
},
105 {12, 2467, WLAN_TX_PWR_JP_DEFAULT
},
106 {13, 2472, WLAN_TX_PWR_JP_DEFAULT
},
107 {14, 2484, WLAN_TX_PWR_JP_DEFAULT
}
111 * the structure for channel, frequency and power
113 struct region_cfp_table
{
115 struct chan_freq_power
*cfp_BG
;
120 * the structure for the mapping between region and CFP
122 static struct region_cfp_table region_cfp_table
[] = {
124 channel_freq_power_US_BG
,
125 sizeof(channel_freq_power_US_BG
) / sizeof(struct chan_freq_power
),
128 {0x20, /*CANADA IC */
129 channel_freq_power_US_BG
,
130 sizeof(channel_freq_power_US_BG
) / sizeof(struct chan_freq_power
),
133 {0x30, /*EU*/ channel_freq_power_EU_BG
,
134 sizeof(channel_freq_power_EU_BG
) / sizeof(struct chan_freq_power
),
137 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG
,
138 sizeof(channel_freq_power_SPN_BG
) / sizeof(struct chan_freq_power
),
141 {0x32, /*FRANCE*/ channel_freq_power_FR_BG
,
142 sizeof(channel_freq_power_FR_BG
) / sizeof(struct chan_freq_power
),
145 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG
,
146 sizeof(channel_freq_power_JPN_BG
) / sizeof(struct chan_freq_power
),
149 /*Add new region here */
153 * the table to keep region code
155 u16 libertas_region_code_to_index
[MRVDRV_MAX_REGION_CODE
] =
156 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
159 * 802.11b/g supported bitrates (in 500Kb/s units)
161 u8 libertas_bg_rates
[MAX_RATES
] =
162 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
166 * FW rate table. FW refers to rates by their index in this table, not by the
167 * rate value itself. Values of 0x00 are
168 * reserved positions.
170 static u8 fw_data_rates
[MAX_RATES
] =
171 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
172 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
176 * @brief use index to get the data rate
178 * @param idx The index of data rate
179 * @return data rate or 0
181 u32
libertas_fw_index_to_data_rate(u8 idx
)
183 if (idx
>= sizeof(fw_data_rates
))
185 return fw_data_rates
[idx
];
189 * @brief use rate to get the index
191 * @param rate data rate
194 u8
libertas_data_rate_to_fw_index(u32 rate
)
201 for (i
= 0; i
< sizeof(fw_data_rates
); i
++) {
202 if (rate
== fw_data_rates
[i
])
209 * Attributes exported through sysfs
213 * @brief Get function for sysfs attribute anycast_mask
215 static ssize_t
libertas_anycast_get(struct device
* dev
,
216 struct device_attribute
*attr
, char * buf
)
218 struct cmd_ds_mesh_access mesh_access
;
220 memset(&mesh_access
, 0, sizeof(mesh_access
));
221 libertas_prepare_and_send_command(to_net_dev(dev
)->priv
,
223 CMD_ACT_MESH_GET_ANYCAST
,
224 CMD_OPTION_WAITFORRSP
, 0, (void *)&mesh_access
);
226 return snprintf(buf
, 12, "0x%X\n", le32_to_cpu(mesh_access
.data
[0]));
230 * @brief Set function for sysfs attribute anycast_mask
232 static ssize_t
libertas_anycast_set(struct device
* dev
,
233 struct device_attribute
*attr
, const char * buf
, size_t count
)
235 struct cmd_ds_mesh_access mesh_access
;
238 memset(&mesh_access
, 0, sizeof(mesh_access
));
239 sscanf(buf
, "%x", &datum
);
240 mesh_access
.data
[0] = cpu_to_le32(datum
);
242 libertas_prepare_and_send_command((to_net_dev(dev
))->priv
,
244 CMD_ACT_MESH_SET_ANYCAST
,
245 CMD_OPTION_WAITFORRSP
, 0, (void *)&mesh_access
);
250 * anycast_mask attribute to be exported per mshX interface
251 * through sysfs (/sys/class/net/mshX/anycast_mask)
253 static DEVICE_ATTR(anycast_mask
, 0644, libertas_anycast_get
, libertas_anycast_set
);
255 static ssize_t
libertas_autostart_enabled_get(struct device
* dev
,
256 struct device_attribute
*attr
, char * buf
)
258 struct cmd_ds_mesh_access mesh_access
;
260 memset(&mesh_access
, 0, sizeof(mesh_access
));
261 libertas_prepare_and_send_command(to_net_dev(dev
)->priv
,
263 CMD_ACT_MESH_GET_AUTOSTART_ENABLED
,
264 CMD_OPTION_WAITFORRSP
, 0, (void *)&mesh_access
);
266 return sprintf(buf
, "%d\n", le32_to_cpu(mesh_access
.data
[0]));
269 static ssize_t
libertas_autostart_enabled_set(struct device
* dev
,
270 struct device_attribute
*attr
, const char * buf
, size_t count
)
272 struct cmd_ds_mesh_access mesh_access
;
275 memset(&mesh_access
, 0, sizeof(mesh_access
));
276 sscanf(buf
, "%d", &datum
);
277 mesh_access
.data
[0] = cpu_to_le32(datum
);
279 libertas_prepare_and_send_command((to_net_dev(dev
))->priv
,
281 CMD_ACT_MESH_SET_AUTOSTART_ENABLED
,
282 CMD_OPTION_WAITFORRSP
, 0, (void *)&mesh_access
);
286 static DEVICE_ATTR(autostart_enabled
, 0644,
287 libertas_autostart_enabled_get
, libertas_autostart_enabled_set
);
289 static struct attribute
*libertas_mesh_sysfs_entries
[] = {
290 &dev_attr_anycast_mask
.attr
,
291 &dev_attr_autostart_enabled
.attr
,
295 static struct attribute_group libertas_mesh_attr_group
= {
296 .attrs
= libertas_mesh_sysfs_entries
,
300 * @brief Check if the device can be open and wait if necessary.
302 * @param dev A pointer to net_device structure
305 * For USB adapter, on some systems the device open handler will be
306 * called before FW ready. Use the following flag check and wait
307 * function to work around the issue.
310 static int pre_open_check(struct net_device
*dev
)
312 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
313 wlan_adapter
*adapter
= priv
->adapter
;
316 while (!adapter
->fw_ready
&& i
< 20) {
318 msleep_interruptible(100);
320 if (!adapter
->fw_ready
) {
321 lbs_pr_err("firmware not ready\n");
329 * @brief This function opens the device
331 * @param dev A pointer to net_device structure
334 static int libertas_dev_open(struct net_device
*dev
)
336 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
337 wlan_adapter
*adapter
= priv
->adapter
;
339 lbs_deb_enter(LBS_DEB_NET
);
343 if (adapter
->connect_status
== LIBERTAS_CONNECTED
) {
344 netif_carrier_on(priv
->dev
);
346 netif_carrier_on(priv
->mesh_dev
);
348 netif_carrier_off(priv
->dev
);
350 netif_carrier_off(priv
->mesh_dev
);
353 lbs_deb_leave(LBS_DEB_NET
);
357 * @brief This function opens the mshX interface
359 * @param dev A pointer to net_device structure
362 static int libertas_mesh_open(struct net_device
*dev
)
364 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
366 if (pre_open_check(dev
) == -1)
368 priv
->mesh_open
= 1 ;
369 netif_wake_queue(priv
->mesh_dev
);
370 if (priv
->infra_open
== 0)
371 return libertas_dev_open(priv
->dev
) ;
376 * @brief This function opens the ethX interface
378 * @param dev A pointer to net_device structure
381 static int libertas_open(struct net_device
*dev
)
383 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
385 if(pre_open_check(dev
) == -1)
387 priv
->infra_open
= 1 ;
388 netif_wake_queue(priv
->dev
);
390 return libertas_dev_open(priv
->dev
) ;
394 static int libertas_dev_close(struct net_device
*dev
)
396 wlan_private
*priv
= dev
->priv
;
398 lbs_deb_enter(LBS_DEB_NET
);
400 netif_carrier_off(priv
->dev
);
403 lbs_deb_leave(LBS_DEB_NET
);
408 * @brief This function closes the mshX interface
410 * @param dev A pointer to net_device structure
413 static int libertas_mesh_close(struct net_device
*dev
)
415 wlan_private
*priv
= (wlan_private
*) (dev
->priv
);
418 netif_stop_queue(priv
->mesh_dev
);
419 if (priv
->infra_open
== 0)
420 return libertas_dev_close(dev
);
426 * @brief This function closes the ethX interface
428 * @param dev A pointer to net_device structure
431 static int libertas_close(struct net_device
*dev
)
433 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
435 netif_stop_queue(dev
);
436 priv
->infra_open
= 0;
437 if (priv
->mesh_open
== 0)
438 return libertas_dev_close(dev
);
444 static int libertas_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
447 wlan_private
*priv
= dev
->priv
;
449 lbs_deb_enter(LBS_DEB_NET
);
451 if (priv
->dnld_sent
|| priv
->adapter
->TxLockFlag
) {
452 priv
->stats
.tx_dropped
++;
456 netif_stop_queue(priv
->dev
);
458 netif_stop_queue(priv
->mesh_dev
);
460 if (libertas_process_tx(priv
, skb
) == 0)
461 dev
->trans_start
= jiffies
;
463 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
468 * @brief Mark mesh packets and handover them to libertas_hard_start_xmit
471 static int libertas_mesh_pre_start_xmit(struct sk_buff
*skb
,
472 struct net_device
*dev
)
474 wlan_private
*priv
= dev
->priv
;
477 lbs_deb_enter(LBS_DEB_MESH
);
481 ret
= libertas_hard_start_xmit(skb
, priv
->dev
);
482 lbs_deb_leave_args(LBS_DEB_MESH
, "ret %d", ret
);
487 * @brief Mark non-mesh packets and handover them to libertas_hard_start_xmit
490 static int libertas_pre_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
494 lbs_deb_enter(LBS_DEB_NET
);
496 UNSET_MESH_FRAME(skb
);
498 ret
= libertas_hard_start_xmit(skb
, dev
);
499 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
503 static void libertas_tx_timeout(struct net_device
*dev
)
505 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
507 lbs_deb_enter(LBS_DEB_TX
);
509 lbs_pr_err("tx watch dog timeout\n");
511 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
512 dev
->trans_start
= jiffies
;
514 if (priv
->adapter
->currenttxskb
) {
515 if (priv
->adapter
->radiomode
== WLAN_RADIOMODE_RADIOTAP
) {
516 /* If we are here, we have not received feedback from
517 the previous packet. Assume TX_FAIL and move on. */
518 priv
->adapter
->eventcause
= 0x01000000;
519 libertas_send_tx_feedback(priv
);
521 wake_up_interruptible(&priv
->waitq
);
522 } else if (priv
->adapter
->connect_status
== LIBERTAS_CONNECTED
) {
523 netif_wake_queue(priv
->dev
);
525 netif_wake_queue(priv
->mesh_dev
);
528 lbs_deb_leave(LBS_DEB_TX
);
532 * @brief This function returns the network statistics
534 * @param dev A pointer to wlan_private structure
535 * @return A pointer to net_device_stats structure
537 static struct net_device_stats
*libertas_get_stats(struct net_device
*dev
)
539 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
544 static int libertas_set_mac_address(struct net_device
*dev
, void *addr
)
547 wlan_private
*priv
= (wlan_private
*) dev
->priv
;
548 wlan_adapter
*adapter
= priv
->adapter
;
549 struct sockaddr
*phwaddr
= addr
;
551 lbs_deb_enter(LBS_DEB_NET
);
553 /* In case it was called from the mesh device */
556 memset(adapter
->current_addr
, 0, ETH_ALEN
);
558 /* dev->dev_addr is 8 bytes */
559 lbs_deb_hex(LBS_DEB_NET
, "dev->dev_addr", dev
->dev_addr
, ETH_ALEN
);
561 lbs_deb_hex(LBS_DEB_NET
, "addr", phwaddr
->sa_data
, ETH_ALEN
);
562 memcpy(adapter
->current_addr
, phwaddr
->sa_data
, ETH_ALEN
);
564 ret
= libertas_prepare_and_send_command(priv
, CMD_802_11_MAC_ADDRESS
,
566 CMD_OPTION_WAITFORRSP
, 0, NULL
);
569 lbs_deb_net("set MAC address failed\n");
574 lbs_deb_hex(LBS_DEB_NET
, "adapter->macaddr", adapter
->current_addr
, ETH_ALEN
);
575 memcpy(dev
->dev_addr
, adapter
->current_addr
, ETH_ALEN
);
577 memcpy(priv
->mesh_dev
->dev_addr
, adapter
->current_addr
, ETH_ALEN
);
580 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
584 static int libertas_copy_multicast_address(wlan_adapter
* adapter
,
585 struct net_device
*dev
)
588 struct dev_mc_list
*mcptr
= dev
->mc_list
;
590 for (i
= 0; i
< dev
->mc_count
; i
++) {
591 memcpy(&adapter
->multicastlist
[i
], mcptr
->dmi_addr
, ETH_ALEN
);
599 static void libertas_set_multicast_list(struct net_device
*dev
)
601 wlan_private
*priv
= dev
->priv
;
602 wlan_adapter
*adapter
= priv
->adapter
;
605 lbs_deb_enter(LBS_DEB_NET
);
607 oldpacketfilter
= adapter
->currentpacketfilter
;
609 if (dev
->flags
& IFF_PROMISC
) {
610 lbs_deb_net("enable promiscuous mode\n");
611 adapter
->currentpacketfilter
|=
612 CMD_ACT_MAC_PROMISCUOUS_ENABLE
;
613 adapter
->currentpacketfilter
&=
614 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE
|
615 CMD_ACT_MAC_MULTICAST_ENABLE
);
618 adapter
->currentpacketfilter
&=
619 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE
;
621 if (dev
->flags
& IFF_ALLMULTI
|| dev
->mc_count
>
622 MRVDRV_MAX_MULTICAST_LIST_SIZE
) {
623 lbs_deb_net( "enabling all multicast\n");
624 adapter
->currentpacketfilter
|=
625 CMD_ACT_MAC_ALL_MULTICAST_ENABLE
;
626 adapter
->currentpacketfilter
&=
627 ~CMD_ACT_MAC_MULTICAST_ENABLE
;
629 adapter
->currentpacketfilter
&=
630 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE
;
632 if (!dev
->mc_count
) {
633 lbs_deb_net("no multicast addresses, "
634 "disabling multicast\n");
635 adapter
->currentpacketfilter
&=
636 ~CMD_ACT_MAC_MULTICAST_ENABLE
;
640 adapter
->currentpacketfilter
|=
641 CMD_ACT_MAC_MULTICAST_ENABLE
;
643 adapter
->nr_of_multicastmacaddr
=
644 libertas_copy_multicast_address(adapter
, dev
);
646 lbs_deb_net("multicast addresses: %d\n",
649 for (i
= 0; i
< dev
->mc_count
; i
++) {
650 lbs_deb_net("Multicast address %d:"
652 adapter
->multicastlist
[i
][0],
653 adapter
->multicastlist
[i
][1],
654 adapter
->multicastlist
[i
][2],
655 adapter
->multicastlist
[i
][3],
656 adapter
->multicastlist
[i
][4],
657 adapter
->multicastlist
[i
][5]);
659 /* send multicast addresses to firmware */
660 libertas_prepare_and_send_command(priv
,
661 CMD_MAC_MULTICAST_ADR
,
668 if (adapter
->currentpacketfilter
!= oldpacketfilter
) {
669 libertas_set_mac_packet_filter(priv
);
672 lbs_deb_leave(LBS_DEB_NET
);
676 * @brief This function handles the major jobs in the WLAN driver.
677 * It handles all events generated by firmware, RX data received
678 * from firmware and TX data sent from kernel.
680 * @param data A pointer to wlan_thread structure
683 static int libertas_thread(void *data
)
685 struct net_device
*dev
= data
;
686 wlan_private
*priv
= dev
->priv
;
687 wlan_adapter
*adapter
= priv
->adapter
;
691 lbs_deb_enter(LBS_DEB_THREAD
);
693 init_waitqueue_entry(&wait
, current
);
696 lbs_deb_thread( "main-thread 111: intcounter=%d "
697 "currenttxskb=%p dnld_sent=%d\n",
699 adapter
->currenttxskb
, priv
->dnld_sent
);
701 add_wait_queue(&priv
->waitq
, &wait
);
702 set_current_state(TASK_INTERRUPTIBLE
);
703 spin_lock_irq(&adapter
->driver_lock
);
704 if ((adapter
->psstate
== PS_STATE_SLEEP
) ||
705 (!adapter
->intcounter
706 && (priv
->dnld_sent
|| adapter
->cur_cmd
||
707 list_empty(&adapter
->cmdpendingq
)))) {
709 "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
710 adapter
->connect_status
, adapter
->intcounter
,
711 adapter
->psmode
, adapter
->psstate
);
712 spin_unlock_irq(&adapter
->driver_lock
);
715 spin_unlock_irq(&adapter
->driver_lock
);
719 "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
720 "dnld_sent=%d\n", adapter
->intcounter
,
721 adapter
->currenttxskb
, priv
->dnld_sent
);
723 set_current_state(TASK_RUNNING
);
724 remove_wait_queue(&priv
->waitq
, &wait
);
727 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
730 adapter
->currenttxskb
, priv
->dnld_sent
);
732 if (kthread_should_stop()
733 || adapter
->surpriseremoved
) {
735 "main-thread: break from main thread: surpriseremoved=0x%x\n",
736 adapter
->surpriseremoved
);
741 spin_lock_irq(&adapter
->driver_lock
);
742 if (adapter
->intcounter
) {
744 adapter
->intcounter
= 0;
745 int_status
= priv
->hw_get_int_status(priv
, &ireg
);
749 "main-thread: reading HOST_INT_STATUS_REG failed\n");
750 spin_unlock_irq(&adapter
->driver_lock
);
753 adapter
->hisregcpy
|= ireg
;
756 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
759 adapter
->currenttxskb
, priv
->dnld_sent
);
761 /* command response? */
762 if (adapter
->hisregcpy
& MRVDRV_CMD_UPLD_RDY
) {
763 lbs_deb_thread("main-thread: cmd response ready\n");
765 adapter
->hisregcpy
&= ~MRVDRV_CMD_UPLD_RDY
;
766 spin_unlock_irq(&adapter
->driver_lock
);
767 libertas_process_rx_command(priv
);
768 spin_lock_irq(&adapter
->driver_lock
);
772 if (adapter
->hisregcpy
& MRVDRV_CARDEVENT
) {
773 lbs_deb_thread("main-thread: Card Event Activity\n");
775 adapter
->hisregcpy
&= ~MRVDRV_CARDEVENT
;
777 if (priv
->hw_read_event_cause(priv
)) {
779 "main-thread: hw_read_event_cause failed\n");
780 spin_unlock_irq(&adapter
->driver_lock
);
783 spin_unlock_irq(&adapter
->driver_lock
);
784 libertas_process_event(priv
);
786 spin_unlock_irq(&adapter
->driver_lock
);
788 /* Check if we need to confirm Sleep Request received previously */
789 if (adapter
->psstate
== PS_STATE_PRE_SLEEP
) {
790 if (!priv
->dnld_sent
&& !adapter
->cur_cmd
) {
791 if (adapter
->connect_status
==
792 LIBERTAS_CONNECTED
) {
794 "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
795 "dnld_sent=%d cur_cmd=%p, confirm now\n",
797 adapter
->currenttxskb
,
801 libertas_ps_confirm_sleep(priv
,
802 (u16
) adapter
->psmode
);
804 /* workaround for firmware sending
805 * deauth/linkloss event immediately
806 * after sleep request, remove this
807 * after firmware fixes it
809 adapter
->psstate
= PS_STATE_AWAKE
;
811 "main-thread: ignore PS_SleepConfirm in non-connected state\n");
816 /* The PS state is changed during processing of Sleep Request
819 if ((priv
->adapter
->psstate
== PS_STATE_SLEEP
) ||
820 (priv
->adapter
->psstate
== PS_STATE_PRE_SLEEP
))
823 /* Execute the next command */
824 if (!priv
->dnld_sent
&& !priv
->adapter
->cur_cmd
)
825 libertas_execute_next_command(priv
);
827 /* Wake-up command waiters which can't sleep in
828 * libertas_prepare_and_send_command
830 if (!adapter
->nr_cmd_pending
)
831 wake_up_all(&adapter
->cmd_pending
);
833 libertas_tx_runqueue(priv
);
836 del_timer(&adapter
->command_timer
);
837 adapter
->nr_cmd_pending
= 0;
838 wake_up_all(&adapter
->cmd_pending
);
840 lbs_deb_leave(LBS_DEB_THREAD
);
845 * @brief This function downloads firmware image, gets
846 * HW spec from firmware and set basic parameters to
849 * @param priv A pointer to wlan_private structure
852 static int wlan_setup_station_hw(wlan_private
* priv
)
855 wlan_adapter
*adapter
= priv
->adapter
;
857 lbs_deb_enter(LBS_DEB_FW
);
859 ret
= priv
->hw_prog_firmware(priv
);
862 lbs_deb_fw("bootloader in invalid state\n");
868 * Read MAC address from HW
870 memset(adapter
->current_addr
, 0xff, ETH_ALEN
);
872 ret
= libertas_prepare_and_send_command(priv
, CMD_GET_HW_SPEC
,
873 0, CMD_OPTION_WAITFORRSP
, 0, NULL
);
880 libertas_set_mac_packet_filter(priv
);
882 /* Get the supported Data rates */
883 ret
= libertas_prepare_and_send_command(priv
, CMD_802_11_DATA_RATE
,
885 CMD_OPTION_WAITFORRSP
, 0, NULL
);
894 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
898 static void command_timer_fn(unsigned long data
);
901 * This function handles the timeout of command sending.
902 * It will re-send the same command again.
904 static void command_timer_fn(unsigned long data
)
906 wlan_private
*priv
= (wlan_private
*)data
;
907 wlan_adapter
*adapter
= priv
->adapter
;
908 struct cmd_ctrl_node
*ptempnode
;
909 struct cmd_ds_command
*cmd
;
912 ptempnode
= adapter
->cur_cmd
;
913 if (ptempnode
== NULL
) {
914 lbs_deb_fw("ptempnode empty\n");
918 cmd
= (struct cmd_ds_command
*)ptempnode
->bufvirtualaddr
;
920 lbs_deb_fw("cmd is NULL\n");
924 lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd
->command
);
926 if (!adapter
->fw_ready
)
929 spin_lock_irqsave(&adapter
->driver_lock
, flags
);
930 adapter
->cur_cmd
= NULL
;
931 spin_unlock_irqrestore(&adapter
->driver_lock
, flags
);
933 lbs_deb_fw("re-sending same command because of timeout\n");
934 libertas_queue_cmd(adapter
, ptempnode
, 0);
936 wake_up_interruptible(&priv
->waitq
);
941 static void libertas_free_adapter(wlan_private
* priv
)
943 wlan_adapter
*adapter
= priv
->adapter
;
946 lbs_deb_fw("why double free adapter?\n");
950 lbs_deb_fw("free command buffer\n");
951 libertas_free_cmd_buffer(priv
);
953 lbs_deb_fw("free command_timer\n");
954 del_timer(&adapter
->command_timer
);
956 lbs_deb_fw("free scan results table\n");
957 kfree(adapter
->networks
);
958 adapter
->networks
= NULL
;
960 /* Free the adapter object itself */
961 lbs_deb_fw("free adapter\n");
963 priv
->adapter
= NULL
;
966 static int wlan_allocate_adapter(wlan_private
* priv
)
969 wlan_adapter
*adapter
= priv
->adapter
;
971 /* Allocate buffer to store the BSSID list */
972 bufsize
= MAX_NETWORK_COUNT
* sizeof(struct bss_descriptor
);
973 adapter
->networks
= kzalloc(bufsize
, GFP_KERNEL
);
974 if (!adapter
->networks
) {
975 lbs_pr_err("Out of memory allocating beacons\n");
976 libertas_free_adapter(priv
);
980 /* Allocate the command buffers */
981 libertas_allocate_cmd_buffer(priv
);
983 memset(&adapter
->libertas_ps_confirm_sleep
, 0, sizeof(struct PS_CMD_ConfirmSleep
));
984 adapter
->libertas_ps_confirm_sleep
.seqnum
= cpu_to_le16(++adapter
->seqnum
);
985 adapter
->libertas_ps_confirm_sleep
.command
=
986 cpu_to_le16(CMD_802_11_PS_MODE
);
987 adapter
->libertas_ps_confirm_sleep
.size
=
988 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep
));
989 adapter
->libertas_ps_confirm_sleep
.result
= 0;
990 adapter
->libertas_ps_confirm_sleep
.action
=
991 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED
);
996 static void wlan_init_adapter(wlan_private
* priv
)
998 wlan_adapter
*adapter
= priv
->adapter
;
1001 adapter
->connect_status
= LIBERTAS_DISCONNECTED
;
1002 memset(adapter
->current_addr
, 0xff, ETH_ALEN
);
1004 /* 802.11 specific */
1005 adapter
->secinfo
.wep_enabled
= 0;
1006 for (i
= 0; i
< sizeof(adapter
->wep_keys
) / sizeof(adapter
->wep_keys
[0]);
1008 memset(&adapter
->wep_keys
[i
], 0, sizeof(struct enc_key
));
1009 adapter
->wep_tx_keyidx
= 0;
1010 adapter
->secinfo
.auth_mode
= IW_AUTH_ALG_OPEN_SYSTEM
;
1011 adapter
->mode
= IW_MODE_INFRA
;
1013 adapter
->pending_assoc_req
= NULL
;
1014 adapter
->in_progress_assoc_req
= NULL
;
1016 /* Initialize scan result lists */
1017 INIT_LIST_HEAD(&adapter
->network_free_list
);
1018 INIT_LIST_HEAD(&adapter
->network_list
);
1019 for (i
= 0; i
< MAX_NETWORK_COUNT
; i
++) {
1020 list_add_tail(&adapter
->networks
[i
].list
,
1021 &adapter
->network_free_list
);
1024 mutex_init(&adapter
->lock
);
1026 memset(&adapter
->curbssparams
, 0, sizeof(adapter
->curbssparams
));
1027 adapter
->curbssparams
.channel
= DEFAULT_AD_HOC_CHANNEL
;
1029 /* PnP and power profile */
1030 adapter
->surpriseremoved
= 0;
1032 adapter
->currentpacketfilter
=
1033 CMD_ACT_MAC_RX_ON
| CMD_ACT_MAC_TX_ON
;
1035 adapter
->radioon
= RADIO_ON
;
1037 adapter
->auto_rate
= 1;
1038 adapter
->cur_rate
= 0;
1040 // set default capabilities
1041 adapter
->capability
= WLAN_CAPABILITY_SHORT_PREAMBLE
;
1043 adapter
->psmode
= WLAN802_11POWERMODECAM
;
1045 adapter
->psstate
= PS_STATE_FULL_POWER
;
1046 adapter
->needtowakeup
= 0;
1048 adapter
->intcounter
= 0;
1050 adapter
->currenttxskb
= NULL
;
1052 memset(&adapter
->tx_queue_ps
, 0, NR_TX_QUEUE
*sizeof(struct sk_buff
*));
1053 adapter
->tx_queue_idx
= 0;
1054 spin_lock_init(&adapter
->txqueue_lock
);
1059 static int libertas_init_fw(wlan_private
* priv
)
1062 wlan_adapter
*adapter
= priv
->adapter
;
1064 lbs_deb_enter(LBS_DEB_FW
);
1066 /* Allocate adapter structure */
1067 if ((ret
= wlan_allocate_adapter(priv
)) != 0)
1070 /* init adapter structure */
1071 wlan_init_adapter(priv
);
1073 /* init timer etc. */
1074 setup_timer(&adapter
->command_timer
, command_timer_fn
,
1075 (unsigned long)priv
);
1077 /* download fimrware etc. */
1078 if ((ret
= wlan_setup_station_hw(priv
)) != 0) {
1079 del_timer_sync(&adapter
->command_timer
);
1084 libertas_init_11d(priv
);
1088 lbs_deb_leave_args(LBS_DEB_FW
, "ret %d", ret
);
1093 * @brief This function adds the card. it will probe the
1094 * card, allocate the wlan_priv and initialize the device.
1096 * @param card A pointer to card
1097 * @return A pointer to wlan_private structure
1099 wlan_private
*libertas_add_card(void *card
, struct device
*dmdev
)
1101 struct net_device
*dev
= NULL
;
1102 wlan_private
*priv
= NULL
;
1104 lbs_deb_enter(LBS_DEB_NET
);
1106 /* Allocate an Ethernet device and register it */
1107 if (!(dev
= alloc_etherdev(sizeof(wlan_private
)))) {
1108 lbs_pr_err("init ethX device failed\n");
1113 /* allocate buffer for wlan_adapter */
1114 if (!(priv
->adapter
= kzalloc(sizeof(wlan_adapter
), GFP_KERNEL
))) {
1115 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
1121 priv
->mesh_open
= 0;
1122 priv
->infra_open
= 0;
1124 SET_MODULE_OWNER(dev
);
1126 /* Setup the OS Interface to our functions */
1127 dev
->open
= libertas_open
;
1128 dev
->hard_start_xmit
= libertas_pre_start_xmit
;
1129 dev
->stop
= libertas_close
;
1130 dev
->set_mac_address
= libertas_set_mac_address
;
1131 dev
->tx_timeout
= libertas_tx_timeout
;
1132 dev
->get_stats
= libertas_get_stats
;
1133 dev
->watchdog_timeo
= 5 * HZ
;
1134 dev
->ethtool_ops
= &libertas_ethtool_ops
;
1136 dev
->wireless_handlers
= (struct iw_handler_def
*)&libertas_handler_def
;
1138 #define NETIF_F_DYNALLOC 16
1139 dev
->features
|= NETIF_F_DYNALLOC
;
1140 dev
->flags
|= IFF_BROADCAST
| IFF_MULTICAST
;
1141 dev
->set_multicast_list
= libertas_set_multicast_list
;
1143 SET_NETDEV_DEV(dev
, dmdev
);
1145 INIT_LIST_HEAD(&priv
->adapter
->cmdfreeq
);
1146 INIT_LIST_HEAD(&priv
->adapter
->cmdpendingq
);
1148 spin_lock_init(&priv
->adapter
->driver_lock
);
1149 init_waitqueue_head(&priv
->adapter
->cmd_pending
);
1150 priv
->adapter
->nr_cmd_pending
= 0;
1157 lbs_deb_leave_args(LBS_DEB_NET
, "priv %p", priv
);
1160 EXPORT_SYMBOL_GPL(libertas_add_card
);
1162 int libertas_activate_card(wlan_private
*priv
)
1164 struct net_device
*dev
= priv
->dev
;
1167 lbs_deb_enter(LBS_DEB_MAIN
);
1169 lbs_deb_thread("Starting main thread...\n");
1170 init_waitqueue_head(&priv
->waitq
);
1171 priv
->main_thread
= kthread_run(libertas_thread
, dev
, "libertas_main");
1172 if (IS_ERR(priv
->main_thread
)) {
1173 lbs_deb_thread("Error creating main thread.\n");
1177 priv
->assoc_thread
=
1178 create_singlethread_workqueue("libertas_assoc");
1179 INIT_DELAYED_WORK(&priv
->assoc_work
, libertas_association_worker
);
1180 INIT_WORK(&priv
->sync_channel
, libertas_sync_channel
);
1183 * Register the device. Fillup the private data structure with
1184 * relevant information from the card and request for the required
1187 if (priv
->hw_register_dev(priv
) < 0) {
1188 lbs_pr_err("failed to register WLAN device\n");
1189 goto err_registerdev
;
1192 /* init FW and HW */
1193 if (libertas_init_fw(priv
)) {
1194 lbs_pr_err("firmware init failed\n");
1195 goto err_registerdev
;
1198 if (register_netdev(dev
)) {
1199 lbs_pr_err("cannot register ethX device\n");
1203 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev
->name
);
1205 libertas_debugfs_init_one(priv
, dev
);
1211 priv
->hw_unregister_dev(priv
);
1213 destroy_workqueue(priv
->assoc_thread
);
1214 /* Stop the thread servicing the interrupts */
1215 wake_up_interruptible(&priv
->waitq
);
1216 kthread_stop(priv
->main_thread
);
1218 lbs_deb_leave_args(LBS_DEB_NET
, "ret %d", ret
);
1221 EXPORT_SYMBOL_GPL(libertas_activate_card
);
1225 * @brief This function adds mshX interface
1227 * @param priv A pointer to the wlan_private structure
1228 * @return 0 if successful, -X otherwise
1230 int libertas_add_mesh(wlan_private
*priv
, struct device
*dev
)
1232 struct net_device
*mesh_dev
= NULL
;
1235 lbs_deb_enter(LBS_DEB_MESH
);
1237 /* Allocate a virtual mesh device */
1238 if (!(mesh_dev
= alloc_netdev(0, "msh%d", ether_setup
))) {
1239 lbs_deb_mesh("init mshX device failed\n");
1243 mesh_dev
->priv
= priv
;
1244 priv
->mesh_dev
= mesh_dev
;
1246 SET_MODULE_OWNER(mesh_dev
);
1248 mesh_dev
->open
= libertas_mesh_open
;
1249 mesh_dev
->hard_start_xmit
= libertas_mesh_pre_start_xmit
;
1250 mesh_dev
->stop
= libertas_mesh_close
;
1251 mesh_dev
->get_stats
= libertas_get_stats
;
1252 mesh_dev
->set_mac_address
= libertas_set_mac_address
;
1253 mesh_dev
->ethtool_ops
= &libertas_ethtool_ops
;
1254 memcpy(mesh_dev
->dev_addr
, priv
->dev
->dev_addr
,
1255 sizeof(priv
->dev
->dev_addr
));
1257 SET_NETDEV_DEV(priv
->mesh_dev
, dev
);
1260 mesh_dev
->wireless_handlers
= (struct iw_handler_def
*)&mesh_handler_def
;
1262 #define NETIF_F_DYNALLOC 16
1264 /* Register virtual mesh interface */
1265 ret
= register_netdev(mesh_dev
);
1267 lbs_pr_err("cannot register mshX virtual interface\n");
1271 ret
= sysfs_create_group(&(mesh_dev
->dev
.kobj
), &libertas_mesh_attr_group
);
1273 goto err_unregister
;
1275 /* Everything successful */
1280 unregister_netdev(mesh_dev
);
1283 free_netdev(mesh_dev
);
1286 lbs_deb_leave_args(LBS_DEB_MESH
, "ret %d", ret
);
1289 EXPORT_SYMBOL_GPL(libertas_add_mesh
);
1291 static void wake_pending_cmdnodes(wlan_private
*priv
)
1293 struct cmd_ctrl_node
*cmdnode
;
1294 unsigned long flags
;
1296 lbs_deb_enter(LBS_DEB_HOST
);
1298 spin_lock_irqsave(&priv
->adapter
->driver_lock
, flags
);
1299 list_for_each_entry(cmdnode
, &priv
->adapter
->cmdpendingq
, list
) {
1300 cmdnode
->cmdwaitqwoken
= 1;
1301 wake_up_interruptible(&cmdnode
->cmdwait_q
);
1303 spin_unlock_irqrestore(&priv
->adapter
->driver_lock
, flags
);
1307 int libertas_remove_card(wlan_private
*priv
)
1309 wlan_adapter
*adapter
;
1310 struct net_device
*dev
;
1311 union iwreq_data wrqu
;
1313 lbs_deb_enter(LBS_DEB_NET
);
1318 adapter
= priv
->adapter
;
1325 netif_stop_queue(priv
->dev
);
1326 netif_carrier_off(priv
->dev
);
1328 wake_pending_cmdnodes(priv
);
1330 unregister_netdev(dev
);
1332 cancel_delayed_work(&priv
->assoc_work
);
1333 destroy_workqueue(priv
->assoc_thread
);
1335 if (adapter
->psmode
== WLAN802_11POWERMODEMAX_PSP
) {
1336 adapter
->psmode
= WLAN802_11POWERMODECAM
;
1337 libertas_ps_wakeup(priv
, CMD_OPTION_WAITFORRSP
);
1340 memset(wrqu
.ap_addr
.sa_data
, 0xaa, ETH_ALEN
);
1341 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
1342 wireless_send_event(priv
->dev
, SIOCGIWAP
, &wrqu
, NULL
);
1344 adapter
->surpriseremoved
= 1;
1346 /* Stop the thread servicing the interrupts */
1347 kthread_stop(priv
->main_thread
);
1349 libertas_debugfs_remove_one(priv
);
1351 lbs_deb_net("free adapter\n");
1352 libertas_free_adapter(priv
);
1354 lbs_deb_net("unregister finish\n");
1360 lbs_deb_leave(LBS_DEB_NET
);
1363 EXPORT_SYMBOL_GPL(libertas_remove_card
);
1366 void libertas_remove_mesh(wlan_private
*priv
)
1368 struct net_device
*mesh_dev
;
1370 lbs_deb_enter(LBS_DEB_NET
);
1375 mesh_dev
= priv
->mesh_dev
;
1377 netif_stop_queue(mesh_dev
);
1378 netif_carrier_off(priv
->mesh_dev
);
1380 sysfs_remove_group(&(mesh_dev
->dev
.kobj
), &libertas_mesh_attr_group
);
1381 unregister_netdev(mesh_dev
);
1383 priv
->mesh_dev
= NULL
;
1384 free_netdev(mesh_dev
);
1387 lbs_deb_leave(LBS_DEB_NET
);
1389 EXPORT_SYMBOL_GPL(libertas_remove_mesh
);
1392 * @brief This function finds the CFP in
1393 * region_cfp_table based on region and band parameter.
1395 * @param region The region code
1396 * @param band The band
1397 * @param cfp_no A pointer to CFP number
1398 * @return A pointer to CFP
1400 struct chan_freq_power
*libertas_get_region_cfp_table(u8 region
, u8 band
, int *cfp_no
)
1404 lbs_deb_enter(LBS_DEB_MAIN
);
1406 end
= sizeof(region_cfp_table
)/sizeof(struct region_cfp_table
);
1408 for (i
= 0; i
< end
; i
++) {
1409 lbs_deb_main("region_cfp_table[i].region=%d\n",
1410 region_cfp_table
[i
].region
);
1411 if (region_cfp_table
[i
].region
== region
) {
1412 *cfp_no
= region_cfp_table
[i
].cfp_no_BG
;
1413 lbs_deb_leave(LBS_DEB_MAIN
);
1414 return region_cfp_table
[i
].cfp_BG
;
1418 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret NULL");
1422 int libertas_set_regiontable(wlan_private
* priv
, u8 region
, u8 band
)
1424 wlan_adapter
*adapter
= priv
->adapter
;
1428 struct chan_freq_power
*cfp
;
1431 lbs_deb_enter(LBS_DEB_MAIN
);
1433 memset(adapter
->region_channel
, 0, sizeof(adapter
->region_channel
));
1436 cfp
= libertas_get_region_cfp_table(region
, band
, &cfp_no
);
1438 adapter
->region_channel
[i
].nrcfp
= cfp_no
;
1439 adapter
->region_channel
[i
].CFP
= cfp
;
1441 lbs_deb_main("wrong region code %#x in band B/G\n",
1446 adapter
->region_channel
[i
].valid
= 1;
1447 adapter
->region_channel
[i
].region
= region
;
1448 adapter
->region_channel
[i
].band
= band
;
1452 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
1457 * @brief This function handles the interrupt. it will change PS
1458 * state if applicable. it will wake up main_thread to handle
1459 * the interrupt event as well.
1461 * @param dev A pointer to net_device structure
1464 void libertas_interrupt(struct net_device
*dev
)
1466 wlan_private
*priv
= dev
->priv
;
1468 lbs_deb_enter(LBS_DEB_THREAD
);
1470 lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1471 priv
->adapter
->intcounter
);
1473 priv
->adapter
->intcounter
++;
1475 if (priv
->adapter
->psstate
== PS_STATE_SLEEP
) {
1476 priv
->adapter
->psstate
= PS_STATE_AWAKE
;
1477 netif_wake_queue(dev
);
1479 netif_wake_queue(priv
->mesh_dev
);
1482 wake_up_interruptible(&priv
->waitq
);
1484 lbs_deb_leave(LBS_DEB_THREAD
);
1486 EXPORT_SYMBOL_GPL(libertas_interrupt
);
1488 int libertas_reset_device(wlan_private
*priv
)
1492 lbs_deb_enter(LBS_DEB_MAIN
);
1493 ret
= libertas_prepare_and_send_command(priv
, CMD_802_11_RESET
,
1494 CMD_ACT_HALT
, 0, 0, NULL
);
1495 msleep_interruptible(10);
1497 lbs_deb_leave_args(LBS_DEB_MAIN
, "ret %d", ret
);
1500 EXPORT_SYMBOL_GPL(libertas_reset_device
);
1502 static int libertas_init_module(void)
1504 lbs_deb_enter(LBS_DEB_MAIN
);
1505 libertas_debugfs_init();
1506 lbs_deb_leave(LBS_DEB_MAIN
);
1510 static void libertas_exit_module(void)
1512 lbs_deb_enter(LBS_DEB_MAIN
);
1514 libertas_debugfs_remove();
1516 lbs_deb_leave(LBS_DEB_MAIN
);
1519 module_init(libertas_init_module
);
1520 module_exit(libertas_exit_module
);
1522 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1523 MODULE_AUTHOR("Marvell International Ltd.");
1524 MODULE_LICENSE("GPL");