2 * This file contains the handling of command
3 * responses as well as events generated by firmware.
5 #include <linux/slab.h>
6 #include <linux/delay.h>
7 #include <linux/sched.h>
8 #include <asm/unaligned.h>
9 #include <net/cfg80211.h>
15 * @brief This function handles disconnect event. it
16 * reports disconnect to upper layer, clean tx/rx packets,
17 * reset link state etc.
19 * @param priv A pointer to struct lbs_private structure
22 void lbs_mac_event_disconnected(struct lbs_private
*priv
)
24 if (priv
->connect_status
!= LBS_CONNECTED
)
27 lbs_deb_enter(LBS_DEB_ASSOC
);
30 * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
31 * It causes problem in the Supplicant
33 msleep_interruptible(1000);
35 if (priv
->wdev
->iftype
== NL80211_IFTYPE_STATION
)
36 lbs_send_disconnect_notification(priv
);
38 /* report disconnect to upper layer */
39 netif_stop_queue(priv
->dev
);
40 netif_carrier_off(priv
->dev
);
42 /* Free Tx and Rx packets */
43 kfree_skb(priv
->currenttxskb
);
44 priv
->currenttxskb
= NULL
;
45 priv
->tx_pending_len
= 0;
47 priv
->connect_status
= LBS_DISCONNECTED
;
49 if (priv
->psstate
!= PS_STATE_FULL_POWER
) {
50 /* make firmware to exit PS mode */
51 lbs_deb_cmd("disconnected, so exit PS mode\n");
52 lbs_ps_wakeup(priv
, 0);
54 lbs_deb_leave(LBS_DEB_ASSOC
);
57 static int lbs_ret_reg_access(struct lbs_private
*priv
,
58 u16 type
, struct cmd_ds_command
*resp
)
62 lbs_deb_enter(LBS_DEB_CMD
);
65 case CMD_RET(CMD_MAC_REG_ACCESS
):
67 struct cmd_ds_mac_reg_access
*reg
= &resp
->params
.macreg
;
69 priv
->offsetvalue
.offset
= (u32
)le16_to_cpu(reg
->offset
);
70 priv
->offsetvalue
.value
= le32_to_cpu(reg
->value
);
74 case CMD_RET(CMD_BBP_REG_ACCESS
):
76 struct cmd_ds_bbp_reg_access
*reg
= &resp
->params
.bbpreg
;
78 priv
->offsetvalue
.offset
= (u32
)le16_to_cpu(reg
->offset
);
79 priv
->offsetvalue
.value
= reg
->value
;
83 case CMD_RET(CMD_RF_REG_ACCESS
):
85 struct cmd_ds_rf_reg_access
*reg
= &resp
->params
.rfreg
;
87 priv
->offsetvalue
.offset
= (u32
)le16_to_cpu(reg
->offset
);
88 priv
->offsetvalue
.value
= reg
->value
;
96 lbs_deb_leave_args(LBS_DEB_CMD
, "ret %d", ret
);
99 static inline int handle_cmd_response(struct lbs_private
*priv
,
100 struct cmd_header
*cmd_response
)
102 struct cmd_ds_command
*resp
= (struct cmd_ds_command
*) cmd_response
;
105 uint16_t respcmd
= le16_to_cpu(resp
->command
);
107 lbs_deb_enter(LBS_DEB_HOST
);
110 case CMD_RET(CMD_MAC_REG_ACCESS
):
111 case CMD_RET(CMD_BBP_REG_ACCESS
):
112 case CMD_RET(CMD_RF_REG_ACCESS
):
113 ret
= lbs_ret_reg_access(priv
, respcmd
, resp
);
116 case CMD_RET(CMD_802_11_BEACON_STOP
):
119 case CMD_RET(CMD_BT_ACCESS
):
120 spin_lock_irqsave(&priv
->driver_lock
, flags
);
121 if (priv
->cur_cmd
->callback_arg
)
122 memcpy((void *)priv
->cur_cmd
->callback_arg
,
123 &resp
->params
.bt
.addr1
, 2 * ETH_ALEN
);
124 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
126 case CMD_RET(CMD_FWT_ACCESS
):
127 spin_lock_irqsave(&priv
->driver_lock
, flags
);
128 if (priv
->cur_cmd
->callback_arg
)
129 memcpy((void *)priv
->cur_cmd
->callback_arg
, &resp
->params
.fwt
,
130 sizeof(resp
->params
.fwt
));
131 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
133 case CMD_RET(CMD_802_11_BEACON_CTRL
):
134 ret
= lbs_ret_802_11_bcn_ctrl(priv
, resp
);
138 lbs_pr_err("CMD_RESP: unknown cmd response 0x%04x\n",
139 le16_to_cpu(resp
->command
));
142 lbs_deb_leave(LBS_DEB_HOST
);
146 int lbs_process_command_response(struct lbs_private
*priv
, u8
*data
, u32 len
)
148 uint16_t respcmd
, curcmd
;
149 struct cmd_header
*resp
;
154 lbs_deb_enter(LBS_DEB_HOST
);
156 mutex_lock(&priv
->lock
);
157 spin_lock_irqsave(&priv
->driver_lock
, flags
);
159 if (!priv
->cur_cmd
) {
160 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
162 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
167 curcmd
= le16_to_cpu(priv
->cur_cmd
->cmdbuf
->command
);
168 respcmd
= le16_to_cpu(resp
->command
);
169 result
= le16_to_cpu(resp
->result
);
171 lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
172 respcmd
, le16_to_cpu(resp
->seqnum
), len
);
173 lbs_deb_hex(LBS_DEB_CMD
, "CMD_RESP", (void *) resp
, len
);
175 if (resp
->seqnum
!= priv
->cur_cmd
->cmdbuf
->seqnum
) {
176 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
177 le16_to_cpu(resp
->seqnum
), le16_to_cpu(priv
->cur_cmd
->cmdbuf
->seqnum
));
178 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
182 if (respcmd
!= CMD_RET(curcmd
) &&
183 respcmd
!= CMD_RET_802_11_ASSOCIATE
&& curcmd
!= CMD_802_11_ASSOCIATE
) {
184 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd
, curcmd
);
185 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
190 if (resp
->result
== cpu_to_le16(0x0004)) {
191 /* 0x0004 means -EAGAIN. Drop the response, let it time out
192 and be resubmitted */
193 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
194 le16_to_cpu(resp
->command
));
195 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
200 /* Now we got response from FW, cancel the command timer */
201 del_timer(&priv
->command_timer
);
202 priv
->cmd_timed_out
= 0;
204 /* Store the response code to cur_cmd_retcode. */
205 priv
->cur_cmd_retcode
= result
;
207 if (respcmd
== CMD_RET(CMD_802_11_PS_MODE
)) {
208 struct cmd_ds_802_11_ps_mode
*psmode
= (void *) &resp
[1];
209 u16 action
= le16_to_cpu(psmode
->action
);
212 "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
216 lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
219 * We should not re-try enter-ps command in
220 * ad-hoc mode. It takes place in
221 * lbs_execute_next_command().
223 if (priv
->wdev
->iftype
== NL80211_IFTYPE_MONITOR
&&
224 action
== CMD_SUBCMD_ENTER_PS
)
225 priv
->psmode
= LBS802_11POWERMODECAM
;
226 } else if (action
== CMD_SUBCMD_ENTER_PS
) {
227 priv
->needtowakeup
= 0;
228 priv
->psstate
= PS_STATE_AWAKE
;
230 lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
231 if (priv
->connect_status
!= LBS_CONNECTED
) {
233 * When Deauth Event received before Enter_PS command
234 * response, We need to wake up the firmware.
237 "disconnected, invoking lbs_ps_wakeup\n");
239 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
240 mutex_unlock(&priv
->lock
);
241 lbs_ps_wakeup(priv
, 0);
242 mutex_lock(&priv
->lock
);
243 spin_lock_irqsave(&priv
->driver_lock
, flags
);
245 } else if (action
== CMD_SUBCMD_EXIT_PS
) {
246 priv
->needtowakeup
= 0;
247 priv
->psstate
= PS_STATE_FULL_POWER
;
248 lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
250 lbs_deb_host("CMD_RESP: PS action 0x%X\n", action
);
253 lbs_complete_command(priv
, priv
->cur_cmd
, result
);
254 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
260 /* If the command is not successful, cleanup and return failure */
261 if ((result
!= 0 || !(respcmd
& 0x8000))) {
262 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
265 * Handling errors here
268 case CMD_RET(CMD_GET_HW_SPEC
):
269 case CMD_RET(CMD_802_11_RESET
):
270 lbs_deb_host("CMD_RESP: reset failed\n");
274 lbs_complete_command(priv
, priv
->cur_cmd
, result
);
275 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
281 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
283 if (priv
->cur_cmd
&& priv
->cur_cmd
->callback
) {
284 ret
= priv
->cur_cmd
->callback(priv
, priv
->cur_cmd
->callback_arg
,
287 ret
= handle_cmd_response(priv
, resp
);
289 spin_lock_irqsave(&priv
->driver_lock
, flags
);
292 /* Clean up and Put current command back to cmdfreeq */
293 lbs_complete_command(priv
, priv
->cur_cmd
, result
);
295 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
298 mutex_unlock(&priv
->lock
);
299 lbs_deb_leave_args(LBS_DEB_HOST
, "ret %d", ret
);
303 int lbs_process_event(struct lbs_private
*priv
, u32 event
)
306 struct cmd_header cmd
;
308 lbs_deb_enter(LBS_DEB_CMD
);
311 case MACREG_INT_CODE_LINK_SENSED
:
312 lbs_deb_cmd("EVENT: link sensed\n");
315 case MACREG_INT_CODE_DEAUTHENTICATED
:
316 lbs_deb_cmd("EVENT: deauthenticated\n");
317 lbs_mac_event_disconnected(priv
);
320 case MACREG_INT_CODE_DISASSOCIATED
:
321 lbs_deb_cmd("EVENT: disassociated\n");
322 lbs_mac_event_disconnected(priv
);
325 case MACREG_INT_CODE_LINK_LOST_NO_SCAN
:
326 lbs_deb_cmd("EVENT: link lost\n");
327 lbs_mac_event_disconnected(priv
);
330 case MACREG_INT_CODE_PS_SLEEP
:
331 lbs_deb_cmd("EVENT: ps sleep\n");
333 /* handle unexpected PS SLEEP event */
334 if (priv
->psstate
== PS_STATE_FULL_POWER
) {
336 "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
339 priv
->psstate
= PS_STATE_PRE_SLEEP
;
341 lbs_ps_confirm_sleep(priv
);
345 case MACREG_INT_CODE_HOST_AWAKE
:
346 lbs_deb_cmd("EVENT: host awake\n");
347 if (priv
->reset_deep_sleep_wakeup
)
348 priv
->reset_deep_sleep_wakeup(priv
);
349 priv
->is_deep_sleep
= 0;
350 lbs_cmd_async(priv
, CMD_802_11_WAKEUP_CONFIRM
, &cmd
,
352 priv
->is_host_sleep_activated
= 0;
353 wake_up_interruptible(&priv
->host_sleep_q
);
356 case MACREG_INT_CODE_DEEP_SLEEP_AWAKE
:
357 if (priv
->reset_deep_sleep_wakeup
)
358 priv
->reset_deep_sleep_wakeup(priv
);
359 lbs_deb_cmd("EVENT: ds awake\n");
360 priv
->is_deep_sleep
= 0;
361 priv
->wakeup_dev_required
= 0;
362 wake_up_interruptible(&priv
->ds_awake_q
);
365 case MACREG_INT_CODE_PS_AWAKE
:
366 lbs_deb_cmd("EVENT: ps awake\n");
367 /* handle unexpected PS AWAKE event */
368 if (priv
->psstate
== PS_STATE_FULL_POWER
) {
370 "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
374 priv
->psstate
= PS_STATE_AWAKE
;
376 if (priv
->needtowakeup
) {
378 * wait for the command processing to finish
379 * before resuming sending
380 * priv->needtowakeup will be set to FALSE
383 lbs_deb_cmd("waking up ...\n");
384 lbs_ps_wakeup(priv
, 0);
388 case MACREG_INT_CODE_MIC_ERR_UNICAST
:
389 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
390 lbs_send_mic_failureevent(priv
, event
);
393 case MACREG_INT_CODE_MIC_ERR_MULTICAST
:
394 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
395 lbs_send_mic_failureevent(priv
, event
);
398 case MACREG_INT_CODE_MIB_CHANGED
:
399 lbs_deb_cmd("EVENT: MIB CHANGED\n");
401 case MACREG_INT_CODE_INIT_DONE
:
402 lbs_deb_cmd("EVENT: INIT DONE\n");
404 case MACREG_INT_CODE_ADHOC_BCN_LOST
:
405 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
407 case MACREG_INT_CODE_RSSI_LOW
:
408 lbs_pr_alert("EVENT: rssi low\n");
410 case MACREG_INT_CODE_SNR_LOW
:
411 lbs_pr_alert("EVENT: snr low\n");
413 case MACREG_INT_CODE_MAX_FAIL
:
414 lbs_pr_alert("EVENT: max fail\n");
416 case MACREG_INT_CODE_RSSI_HIGH
:
417 lbs_pr_alert("EVENT: rssi high\n");
419 case MACREG_INT_CODE_SNR_HIGH
:
420 lbs_pr_alert("EVENT: snr high\n");
423 case MACREG_INT_CODE_MESH_AUTO_STARTED
:
424 /* Ignore spurious autostart events */
425 lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
429 lbs_pr_alert("EVENT: unknown event id %d\n", event
);
433 lbs_deb_leave_args(LBS_DEB_CMD
, "ret %d", ret
);