2 * This file contains the handling of command
3 * responses as well as events generated by firmware.
5 #include <linux/delay.h>
6 #include <linux/sched.h>
7 #include <linux/if_arp.h>
8 #include <linux/netdevice.h>
9 #include <asm/unaligned.h>
10 #include <net/iw_handler.h>
20 * @brief This function handles disconnect event. it
21 * reports disconnect to upper layer, clean tx/rx packets,
22 * reset link state etc.
24 * @param priv A pointer to struct lbs_private structure
27 void lbs_mac_event_disconnected(struct lbs_private
*priv
)
29 union iwreq_data wrqu
;
31 if (priv
->connect_status
!= LBS_CONNECTED
)
34 lbs_deb_enter(LBS_DEB_ASSOC
);
36 memset(wrqu
.ap_addr
.sa_data
, 0x00, ETH_ALEN
);
37 wrqu
.ap_addr
.sa_family
= ARPHRD_ETHER
;
40 * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
41 * It causes problem in the Supplicant
44 msleep_interruptible(1000);
45 wireless_send_event(priv
->dev
, SIOCGIWAP
, &wrqu
, NULL
);
47 /* report disconnect to upper layer */
48 netif_stop_queue(priv
->dev
);
49 netif_carrier_off(priv
->dev
);
51 /* Free Tx and Rx packets */
52 kfree_skb(priv
->currenttxskb
);
53 priv
->currenttxskb
= NULL
;
54 priv
->tx_pending_len
= 0;
56 /* reset SNR/NF/RSSI values */
57 memset(priv
->SNR
, 0x00, sizeof(priv
->SNR
));
58 memset(priv
->NF
, 0x00, sizeof(priv
->NF
));
59 memset(priv
->RSSI
, 0x00, sizeof(priv
->RSSI
));
60 memset(priv
->rawSNR
, 0x00, sizeof(priv
->rawSNR
));
61 memset(priv
->rawNF
, 0x00, sizeof(priv
->rawNF
));
64 priv
->connect_status
= LBS_DISCONNECTED
;
66 /* Clear out associated SSID and BSSID since connection is
69 memset(&priv
->curbssparams
.bssid
, 0, ETH_ALEN
);
70 memset(&priv
->curbssparams
.ssid
, 0, IW_ESSID_MAX_SIZE
);
71 priv
->curbssparams
.ssid_len
= 0;
73 if (priv
->psstate
!= PS_STATE_FULL_POWER
) {
74 /* make firmware to exit PS mode */
75 lbs_deb_cmd("disconnected, so exit PS mode\n");
76 lbs_ps_wakeup(priv
, 0);
78 lbs_deb_leave(LBS_DEB_ASSOC
);
82 * @brief This function handles MIC failure event.
84 * @param priv A pointer to struct lbs_private structure
85 * @para event the event id
88 static void handle_mic_failureevent(struct lbs_private
*priv
, u32 event
)
92 lbs_deb_enter(LBS_DEB_CMD
);
93 memset(buf
, 0, sizeof(buf
));
95 sprintf(buf
, "%s", "MLME-MICHAELMICFAILURE.indication ");
97 if (event
== MACREG_INT_CODE_MIC_ERR_UNICAST
) {
98 strcat(buf
, "unicast ");
100 strcat(buf
, "multicast ");
103 lbs_send_iwevcustom_event(priv
, buf
);
104 lbs_deb_leave(LBS_DEB_CMD
);
107 static int lbs_ret_reg_access(struct lbs_private
*priv
,
108 u16 type
, struct cmd_ds_command
*resp
)
112 lbs_deb_enter(LBS_DEB_CMD
);
115 case CMD_RET(CMD_MAC_REG_ACCESS
):
117 struct cmd_ds_mac_reg_access
*reg
= &resp
->params
.macreg
;
119 priv
->offsetvalue
.offset
= (u32
)le16_to_cpu(reg
->offset
);
120 priv
->offsetvalue
.value
= le32_to_cpu(reg
->value
);
124 case CMD_RET(CMD_BBP_REG_ACCESS
):
126 struct cmd_ds_bbp_reg_access
*reg
= &resp
->params
.bbpreg
;
128 priv
->offsetvalue
.offset
= (u32
)le16_to_cpu(reg
->offset
);
129 priv
->offsetvalue
.value
= reg
->value
;
133 case CMD_RET(CMD_RF_REG_ACCESS
):
135 struct cmd_ds_rf_reg_access
*reg
= &resp
->params
.rfreg
;
137 priv
->offsetvalue
.offset
= (u32
)le16_to_cpu(reg
->offset
);
138 priv
->offsetvalue
.value
= reg
->value
;
146 lbs_deb_leave_args(LBS_DEB_CMD
, "ret %d", ret
);
150 static int lbs_ret_802_11_rssi(struct lbs_private
*priv
,
151 struct cmd_ds_command
*resp
)
153 struct cmd_ds_802_11_rssi_rsp
*rssirsp
= &resp
->params
.rssirsp
;
155 lbs_deb_enter(LBS_DEB_CMD
);
157 /* store the non average value */
158 priv
->SNR
[TYPE_BEACON
][TYPE_NOAVG
] = get_unaligned_le16(&rssirsp
->SNR
);
159 priv
->NF
[TYPE_BEACON
][TYPE_NOAVG
] = get_unaligned_le16(&rssirsp
->noisefloor
);
161 priv
->SNR
[TYPE_BEACON
][TYPE_AVG
] = get_unaligned_le16(&rssirsp
->avgSNR
);
162 priv
->NF
[TYPE_BEACON
][TYPE_AVG
] = get_unaligned_le16(&rssirsp
->avgnoisefloor
);
164 priv
->RSSI
[TYPE_BEACON
][TYPE_NOAVG
] =
165 CAL_RSSI(priv
->SNR
[TYPE_BEACON
][TYPE_NOAVG
],
166 priv
->NF
[TYPE_BEACON
][TYPE_NOAVG
]);
168 priv
->RSSI
[TYPE_BEACON
][TYPE_AVG
] =
169 CAL_RSSI(priv
->SNR
[TYPE_BEACON
][TYPE_AVG
] / AVG_SCALE
,
170 priv
->NF
[TYPE_BEACON
][TYPE_AVG
] / AVG_SCALE
);
172 lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
173 priv
->RSSI
[TYPE_BEACON
][TYPE_NOAVG
],
174 priv
->RSSI
[TYPE_BEACON
][TYPE_AVG
]);
176 lbs_deb_leave(LBS_DEB_CMD
);
180 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private
* priv
,
181 struct cmd_ds_command
*resp
)
183 struct cmd_ds_802_11_beacon_control
*bcn_ctrl
=
184 &resp
->params
.bcn_ctrl
;
186 lbs_deb_enter(LBS_DEB_CMD
);
188 if (bcn_ctrl
->action
== CMD_ACT_GET
) {
189 priv
->beacon_enable
= (u8
) le16_to_cpu(bcn_ctrl
->beacon_enable
);
190 priv
->beacon_period
= le16_to_cpu(bcn_ctrl
->beacon_period
);
193 lbs_deb_enter(LBS_DEB_CMD
);
197 static inline int handle_cmd_response(struct lbs_private
*priv
,
198 struct cmd_header
*cmd_response
)
200 struct cmd_ds_command
*resp
= (struct cmd_ds_command
*) cmd_response
;
203 uint16_t respcmd
= le16_to_cpu(resp
->command
);
205 lbs_deb_enter(LBS_DEB_HOST
);
208 case CMD_RET(CMD_MAC_REG_ACCESS
):
209 case CMD_RET(CMD_BBP_REG_ACCESS
):
210 case CMD_RET(CMD_RF_REG_ACCESS
):
211 ret
= lbs_ret_reg_access(priv
, respcmd
, resp
);
214 case CMD_RET(CMD_802_11_SET_AFC
):
215 case CMD_RET(CMD_802_11_GET_AFC
):
216 spin_lock_irqsave(&priv
->driver_lock
, flags
);
217 memmove((void *)priv
->cur_cmd
->callback_arg
, &resp
->params
.afc
,
218 sizeof(struct cmd_ds_802_11_afc
));
219 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
223 case CMD_RET(CMD_802_11_BEACON_STOP
):
226 case CMD_RET(CMD_802_11_RSSI
):
227 ret
= lbs_ret_802_11_rssi(priv
, resp
);
230 case CMD_RET(CMD_802_11D_DOMAIN_INFO
):
231 ret
= lbs_ret_802_11d_domain_info(resp
);
234 case CMD_RET(CMD_802_11_TPC_CFG
):
235 spin_lock_irqsave(&priv
->driver_lock
, flags
);
236 memmove((void *)priv
->cur_cmd
->callback_arg
, &resp
->params
.tpccfg
,
237 sizeof(struct cmd_ds_802_11_tpc_cfg
));
238 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
240 case CMD_RET(CMD_802_11_LED_GPIO_CTRL
):
241 spin_lock_irqsave(&priv
->driver_lock
, flags
);
242 memmove((void *)priv
->cur_cmd
->callback_arg
, &resp
->params
.ledgpio
,
243 sizeof(struct cmd_ds_802_11_led_ctrl
));
244 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
247 case CMD_RET(CMD_GET_TSF
):
248 spin_lock_irqsave(&priv
->driver_lock
, flags
);
249 memcpy((void *)priv
->cur_cmd
->callback_arg
,
250 &resp
->params
.gettsf
.tsfvalue
, sizeof(u64
));
251 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
253 case CMD_RET(CMD_BT_ACCESS
):
254 spin_lock_irqsave(&priv
->driver_lock
, flags
);
255 if (priv
->cur_cmd
->callback_arg
)
256 memcpy((void *)priv
->cur_cmd
->callback_arg
,
257 &resp
->params
.bt
.addr1
, 2 * ETH_ALEN
);
258 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
260 case CMD_RET(CMD_FWT_ACCESS
):
261 spin_lock_irqsave(&priv
->driver_lock
, flags
);
262 if (priv
->cur_cmd
->callback_arg
)
263 memcpy((void *)priv
->cur_cmd
->callback_arg
, &resp
->params
.fwt
,
264 sizeof(resp
->params
.fwt
));
265 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
267 case CMD_RET(CMD_802_11_BEACON_CTRL
):
268 ret
= lbs_ret_802_11_bcn_ctrl(priv
, resp
);
272 lbs_pr_err("CMD_RESP: unknown cmd response 0x%04x\n",
273 le16_to_cpu(resp
->command
));
276 lbs_deb_leave(LBS_DEB_HOST
);
280 int lbs_process_command_response(struct lbs_private
*priv
, u8
*data
, u32 len
)
282 uint16_t respcmd
, curcmd
;
283 struct cmd_header
*resp
;
288 lbs_deb_enter(LBS_DEB_HOST
);
290 mutex_lock(&priv
->lock
);
291 spin_lock_irqsave(&priv
->driver_lock
, flags
);
293 if (!priv
->cur_cmd
) {
294 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
296 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
301 curcmd
= le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
);
302 respcmd
= le16_to_cpu(resp
->command
);
303 result
= le16_to_cpu(resp
->result
);
305 lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
306 respcmd
, le16_to_cpu(resp
->seqnum
), len
);
307 lbs_deb_hex(LBS_DEB_CMD
, "CMD_RESP", (void *) resp
, len
);
309 if (resp
->seqnum
!= priv
->cur_cmd
->cmdbuf
->seqnum
) {
310 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
311 le16_to_cpu(resp
->seqnum
), le16_to_cpu(priv
->cur_cmd
->cmdbuf
->seqnum
));
312 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
316 if (respcmd
!= CMD_RET(curcmd
) &&
317 respcmd
!= CMD_RET_802_11_ASSOCIATE
&& curcmd
!= CMD_802_11_ASSOCIATE
) {
318 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd
, curcmd
);
319 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
324 if (resp
->result
== cpu_to_le16(0x0004)) {
325 /* 0x0004 means -EAGAIN. Drop the response, let it time out
326 and be resubmitted */
327 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
328 le16_to_cpu(resp
->command
));
329 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
334 /* Now we got response from FW, cancel the command timer */
335 del_timer(&priv
->command_timer
);
336 priv
->cmd_timed_out
= 0;
337 if (priv
->nr_retries
) {
338 lbs_pr_info("Received result %x to command %x after %d retries\n",
339 result
, curcmd
, priv
->nr_retries
);
340 priv
->nr_retries
= 0;
343 /* Store the response code to cur_cmd_retcode. */
344 priv
->cur_cmd_retcode
= result
;
346 if (respcmd
== CMD_RET(CMD_802_11_PS_MODE
)) {
347 struct cmd_ds_802_11_ps_mode
*psmode
= (void *) &resp
[1];
348 u16 action
= le16_to_cpu(psmode
->action
);
351 "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
355 lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
358 * We should not re-try enter-ps command in
359 * ad-hoc mode. It takes place in
360 * lbs_execute_next_command().
362 if (priv
->mode
== IW_MODE_ADHOC
&&
363 action
== CMD_SUBCMD_ENTER_PS
)
364 priv
->psmode
= LBS802_11POWERMODECAM
;
365 } else if (action
== CMD_SUBCMD_ENTER_PS
) {
366 priv
->needtowakeup
= 0;
367 priv
->psstate
= PS_STATE_AWAKE
;
369 lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
370 if (priv
->connect_status
!= LBS_CONNECTED
) {
372 * When Deauth Event received before Enter_PS command
373 * response, We need to wake up the firmware.
376 "disconnected, invoking lbs_ps_wakeup\n");
378 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
379 mutex_unlock(&priv
->lock
);
380 lbs_ps_wakeup(priv
, 0);
381 mutex_lock(&priv
->lock
);
382 spin_lock_irqsave(&priv
->driver_lock
, flags
);
384 } else if (action
== CMD_SUBCMD_EXIT_PS
) {
385 priv
->needtowakeup
= 0;
386 priv
->psstate
= PS_STATE_FULL_POWER
;
387 lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
389 lbs_deb_host("CMD_RESP: PS action 0x%X\n", action
);
392 lbs_complete_command(priv
, priv
->cur_cmd
, result
);
393 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
399 /* If the command is not successful, cleanup and return failure */
400 if ((result
!= 0 || !(respcmd
& 0x8000))) {
401 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
404 * Handling errors here
407 case CMD_RET(CMD_GET_HW_SPEC
):
408 case CMD_RET(CMD_802_11_RESET
):
409 lbs_deb_host("CMD_RESP: reset failed\n");
413 lbs_complete_command(priv
, priv
->cur_cmd
, result
);
414 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
420 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
422 if (priv
->cur_cmd
&& priv
->cur_cmd
->callback
) {
423 ret
= priv
->cur_cmd
->callback(priv
, priv
->cur_cmd
->callback_arg
,
426 ret
= handle_cmd_response(priv
, resp
);
428 spin_lock_irqsave(&priv
->driver_lock
, flags
);
431 /* Clean up and Put current command back to cmdfreeq */
432 lbs_complete_command(priv
, priv
->cur_cmd
, result
);
434 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
437 mutex_unlock(&priv
->lock
);
438 lbs_deb_leave_args(LBS_DEB_HOST
, "ret %d", ret
);
442 static int lbs_send_confirmwake(struct lbs_private
*priv
)
444 struct cmd_header cmd
;
447 lbs_deb_enter(LBS_DEB_HOST
);
449 cmd
.command
= cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM
);
450 cmd
.size
= cpu_to_le16(sizeof(cmd
));
451 cmd
.seqnum
= cpu_to_le16(++priv
->seqnum
);
454 lbs_deb_hex(LBS_DEB_HOST
, "wake confirm", (u8
*) &cmd
,
457 ret
= priv
->hw_host_to_card(priv
, MVMS_CMD
, (u8
*) &cmd
, sizeof(cmd
));
459 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
461 lbs_deb_leave_args(LBS_DEB_HOST
, "ret %d", ret
);
465 int lbs_process_event(struct lbs_private
*priv
, u32 event
)
469 lbs_deb_enter(LBS_DEB_CMD
);
472 case MACREG_INT_CODE_LINK_SENSED
:
473 lbs_deb_cmd("EVENT: link sensed\n");
476 case MACREG_INT_CODE_DEAUTHENTICATED
:
477 lbs_deb_cmd("EVENT: deauthenticated\n");
478 lbs_mac_event_disconnected(priv
);
481 case MACREG_INT_CODE_DISASSOCIATED
:
482 lbs_deb_cmd("EVENT: disassociated\n");
483 lbs_mac_event_disconnected(priv
);
486 case MACREG_INT_CODE_LINK_LOST_NO_SCAN
:
487 lbs_deb_cmd("EVENT: link lost\n");
488 lbs_mac_event_disconnected(priv
);
491 case MACREG_INT_CODE_PS_SLEEP
:
492 lbs_deb_cmd("EVENT: ps sleep\n");
494 /* handle unexpected PS SLEEP event */
495 if (priv
->psstate
== PS_STATE_FULL_POWER
) {
497 "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
500 priv
->psstate
= PS_STATE_PRE_SLEEP
;
502 lbs_ps_confirm_sleep(priv
);
506 case MACREG_INT_CODE_HOST_AWAKE
:
507 lbs_deb_cmd("EVENT: host awake\n");
508 lbs_send_confirmwake(priv
);
511 case MACREG_INT_CODE_PS_AWAKE
:
512 lbs_deb_cmd("EVENT: ps awake\n");
513 /* handle unexpected PS AWAKE event */
514 if (priv
->psstate
== PS_STATE_FULL_POWER
) {
516 "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
520 priv
->psstate
= PS_STATE_AWAKE
;
522 if (priv
->needtowakeup
) {
524 * wait for the command processing to finish
525 * before resuming sending
526 * priv->needtowakeup will be set to FALSE
529 lbs_deb_cmd("waking up ...\n");
530 lbs_ps_wakeup(priv
, 0);
534 case MACREG_INT_CODE_MIC_ERR_UNICAST
:
535 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
536 handle_mic_failureevent(priv
, MACREG_INT_CODE_MIC_ERR_UNICAST
);
539 case MACREG_INT_CODE_MIC_ERR_MULTICAST
:
540 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
541 handle_mic_failureevent(priv
, MACREG_INT_CODE_MIC_ERR_MULTICAST
);
544 case MACREG_INT_CODE_MIB_CHANGED
:
545 lbs_deb_cmd("EVENT: MIB CHANGED\n");
547 case MACREG_INT_CODE_INIT_DONE
:
548 lbs_deb_cmd("EVENT: INIT DONE\n");
550 case MACREG_INT_CODE_ADHOC_BCN_LOST
:
551 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
553 case MACREG_INT_CODE_RSSI_LOW
:
554 lbs_pr_alert("EVENT: rssi low\n");
556 case MACREG_INT_CODE_SNR_LOW
:
557 lbs_pr_alert("EVENT: snr low\n");
559 case MACREG_INT_CODE_MAX_FAIL
:
560 lbs_pr_alert("EVENT: max fail\n");
562 case MACREG_INT_CODE_RSSI_HIGH
:
563 lbs_pr_alert("EVENT: rssi high\n");
565 case MACREG_INT_CODE_SNR_HIGH
:
566 lbs_pr_alert("EVENT: snr high\n");
569 case MACREG_INT_CODE_MESH_AUTO_STARTED
:
570 /* Ignore spurious autostart events if autostart is disabled */
571 if (!priv
->mesh_autostart_enabled
) {
572 lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
575 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
576 priv
->mesh_connect_status
= LBS_CONNECTED
;
577 if (priv
->mesh_open
) {
578 netif_carrier_on(priv
->mesh_dev
);
579 if (!priv
->tx_pending_len
)
580 netif_wake_queue(priv
->mesh_dev
);
582 priv
->mode
= IW_MODE_ADHOC
;
583 schedule_work(&priv
->sync_channel
);
587 lbs_pr_alert("EVENT: unknown event id %d\n", event
);
591 lbs_deb_leave_args(LBS_DEB_CMD
, "ret %d", ret
);