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>
21 * @brief This function handles disconnect event. it
22 * reports disconnect to upper layer, clean tx/rx packets,
23 * reset link state etc.
25 * @param priv A pointer to struct lbs_private structure
28 void lbs_mac_event_disconnected(struct lbs_private *priv)
30 union iwreq_data wrqu;
32 if (priv->connect_status != LBS_CONNECTED)
35 lbs_deb_enter(LBS_DEB_ASSOC);
37 memset(wrqu.ap_addr.sa_data, 0x00, ETH_ALEN);
38 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
41 * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
42 * It causes problem in the Supplicant
45 msleep_interruptible(1000);
46 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
48 /* report disconnect to upper layer */
49 netif_stop_queue(priv->dev);
50 netif_carrier_off(priv->dev);
52 /* Free Tx and Rx packets */
53 kfree_skb(priv->currenttxskb);
54 priv->currenttxskb = NULL;
55 priv->tx_pending_len = 0;
57 /* reset SNR/NF/RSSI values */
58 memset(priv->SNR, 0x00, sizeof(priv->SNR));
59 memset(priv->NF, 0x00, sizeof(priv->NF));
60 memset(priv->RSSI, 0x00, sizeof(priv->RSSI));
61 memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
62 memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
65 priv->connect_status = LBS_DISCONNECTED;
67 /* Clear out associated SSID and BSSID since connection is
70 memset(&priv->curbssparams.bssid, 0, ETH_ALEN);
71 memset(&priv->curbssparams.ssid, 0, IW_ESSID_MAX_SIZE);
72 priv->curbssparams.ssid_len = 0;
74 if (priv->psstate != PS_STATE_FULL_POWER) {
75 /* make firmware to exit PS mode */
76 lbs_deb_cmd("disconnected, so exit PS mode\n");
77 lbs_ps_wakeup(priv, 0);
79 lbs_deb_leave(LBS_DEB_ASSOC);
83 * @brief This function handles MIC failure event.
85 * @param priv A pointer to struct lbs_private structure
86 * @para event the event id
89 static void handle_mic_failureevent(struct lbs_private *priv, u32 event)
93 lbs_deb_enter(LBS_DEB_CMD);
94 memset(buf, 0, sizeof(buf));
96 sprintf(buf, "%s", "MLME-MICHAELMICFAILURE.indication ");
98 if (event == MACREG_INT_CODE_MIC_ERR_UNICAST) {
99 strcat(buf, "unicast ");
101 strcat(buf, "multicast ");
104 lbs_send_iwevcustom_event(priv, buf);
105 lbs_deb_leave(LBS_DEB_CMD);
108 static int lbs_ret_reg_access(struct lbs_private *priv,
109 u16 type, struct cmd_ds_command *resp)
113 lbs_deb_enter(LBS_DEB_CMD);
116 case CMD_RET(CMD_MAC_REG_ACCESS):
118 struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;
120 priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
121 priv->offsetvalue.value = le32_to_cpu(reg->value);
125 case CMD_RET(CMD_BBP_REG_ACCESS):
127 struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;
129 priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
130 priv->offsetvalue.value = reg->value;
134 case CMD_RET(CMD_RF_REG_ACCESS):
136 struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;
138 priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
139 priv->offsetvalue.value = reg->value;
147 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
151 static int lbs_ret_802_11_rssi(struct lbs_private *priv,
152 struct cmd_ds_command *resp)
154 struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
156 lbs_deb_enter(LBS_DEB_CMD);
158 /* store the non average value */
159 priv->SNR[TYPE_BEACON][TYPE_NOAVG] = get_unaligned_le16(&rssirsp->SNR);
160 priv->NF[TYPE_BEACON][TYPE_NOAVG] = get_unaligned_le16(&rssirsp->noisefloor);
162 priv->SNR[TYPE_BEACON][TYPE_AVG] = get_unaligned_le16(&rssirsp->avgSNR);
163 priv->NF[TYPE_BEACON][TYPE_AVG] = get_unaligned_le16(&rssirsp->avgnoisefloor);
165 priv->RSSI[TYPE_BEACON][TYPE_NOAVG] =
166 CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_NOAVG],
167 priv->NF[TYPE_BEACON][TYPE_NOAVG]);
169 priv->RSSI[TYPE_BEACON][TYPE_AVG] =
170 CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
171 priv->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);
173 lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
174 priv->RSSI[TYPE_BEACON][TYPE_NOAVG],
175 priv->RSSI[TYPE_BEACON][TYPE_AVG]);
177 lbs_deb_leave(LBS_DEB_CMD);
181 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
182 struct cmd_ds_command *resp)
184 struct cmd_ds_802_11_beacon_control *bcn_ctrl =
185 &resp->params.bcn_ctrl;
187 lbs_deb_enter(LBS_DEB_CMD);
189 if (bcn_ctrl->action == CMD_ACT_GET) {
190 priv->beacon_enable = (u8) le16_to_cpu(bcn_ctrl->beacon_enable);
191 priv->beacon_period = le16_to_cpu(bcn_ctrl->beacon_period);
194 lbs_deb_enter(LBS_DEB_CMD);
198 static inline int handle_cmd_response(struct lbs_private *priv,
199 struct cmd_header *cmd_response)
201 struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
204 uint16_t respcmd = le16_to_cpu(resp->command);
206 lbs_deb_enter(LBS_DEB_HOST);
209 case CMD_RET(CMD_MAC_REG_ACCESS):
210 case CMD_RET(CMD_BBP_REG_ACCESS):
211 case CMD_RET(CMD_RF_REG_ACCESS):
212 ret = lbs_ret_reg_access(priv, respcmd, resp);
215 case CMD_RET(CMD_802_11_SET_AFC):
216 case CMD_RET(CMD_802_11_GET_AFC):
217 spin_lock_irqsave(&priv->driver_lock, flags);
218 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
219 sizeof(struct cmd_ds_802_11_afc));
220 spin_unlock_irqrestore(&priv->driver_lock, flags);
224 case CMD_RET(CMD_802_11_BEACON_STOP):
227 case CMD_RET(CMD_802_11_RSSI):
228 ret = lbs_ret_802_11_rssi(priv, resp);
231 case CMD_RET(CMD_802_11D_DOMAIN_INFO):
232 ret = lbs_ret_802_11d_domain_info(resp);
235 case CMD_RET(CMD_802_11_TPC_CFG):
236 spin_lock_irqsave(&priv->driver_lock, flags);
237 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
238 sizeof(struct cmd_ds_802_11_tpc_cfg));
239 spin_unlock_irqrestore(&priv->driver_lock, flags);
241 case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
242 spin_lock_irqsave(&priv->driver_lock, flags);
243 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
244 sizeof(struct cmd_ds_802_11_led_ctrl));
245 spin_unlock_irqrestore(&priv->driver_lock, flags);
248 case CMD_RET(CMD_GET_TSF):
249 spin_lock_irqsave(&priv->driver_lock, flags);
250 memcpy((void *)priv->cur_cmd->callback_arg,
251 &resp->params.gettsf.tsfvalue, sizeof(u64));
252 spin_unlock_irqrestore(&priv->driver_lock, flags);
254 case CMD_RET(CMD_BT_ACCESS):
255 spin_lock_irqsave(&priv->driver_lock, flags);
256 if (priv->cur_cmd->callback_arg)
257 memcpy((void *)priv->cur_cmd->callback_arg,
258 &resp->params.bt.addr1, 2 * ETH_ALEN);
259 spin_unlock_irqrestore(&priv->driver_lock, flags);
261 case CMD_RET(CMD_FWT_ACCESS):
262 spin_lock_irqsave(&priv->driver_lock, flags);
263 if (priv->cur_cmd->callback_arg)
264 memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
265 sizeof(resp->params.fwt));
266 spin_unlock_irqrestore(&priv->driver_lock, flags);
268 case CMD_RET(CMD_802_11_BEACON_CTRL):
269 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
273 lbs_pr_err("CMD_RESP: unknown cmd response 0x%04x\n",
274 le16_to_cpu(resp->command));
277 lbs_deb_leave(LBS_DEB_HOST);
281 int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len)
283 uint16_t respcmd, curcmd;
284 struct cmd_header *resp;
289 lbs_deb_enter(LBS_DEB_HOST);
291 mutex_lock(&priv->lock);
292 spin_lock_irqsave(&priv->driver_lock, flags);
294 if (!priv->cur_cmd) {
295 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
297 spin_unlock_irqrestore(&priv->driver_lock, flags);
302 curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
303 respcmd = le16_to_cpu(resp->command);
304 result = le16_to_cpu(resp->result);
306 lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
307 respcmd, le16_to_cpu(resp->seqnum), len);
308 lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);
310 if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
311 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
312 le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
313 spin_unlock_irqrestore(&priv->driver_lock, flags);
317 if (respcmd != CMD_RET(curcmd) &&
318 respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
319 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
320 spin_unlock_irqrestore(&priv->driver_lock, flags);
325 if (resp->result == cpu_to_le16(0x0004)) {
326 /* 0x0004 means -EAGAIN. Drop the response, let it time out
327 and be resubmitted */
328 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
329 le16_to_cpu(resp->command));
330 spin_unlock_irqrestore(&priv->driver_lock, flags);
335 /* Now we got response from FW, cancel the command timer */
336 del_timer(&priv->command_timer);
337 priv->cmd_timed_out = 0;
338 if (priv->nr_retries) {
339 lbs_pr_info("Received result %x to command %x after %d retries\n",
340 result, curcmd, priv->nr_retries);
341 priv->nr_retries = 0;
344 /* Store the response code to cur_cmd_retcode. */
345 priv->cur_cmd_retcode = result;
347 if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
348 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
349 u16 action = le16_to_cpu(psmode->action);
352 "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
356 lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
359 * We should not re-try enter-ps command in
360 * ad-hoc mode. It takes place in
361 * lbs_execute_next_command().
363 if (priv->mode == IW_MODE_ADHOC &&
364 action == CMD_SUBCMD_ENTER_PS)
365 priv->psmode = LBS802_11POWERMODECAM;
366 } else if (action == CMD_SUBCMD_ENTER_PS) {
367 priv->needtowakeup = 0;
368 priv->psstate = PS_STATE_AWAKE;
370 lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
371 if (priv->connect_status != LBS_CONNECTED) {
373 * When Deauth Event received before Enter_PS command
374 * response, We need to wake up the firmware.
377 "disconnected, invoking lbs_ps_wakeup\n");
379 spin_unlock_irqrestore(&priv->driver_lock, flags);
380 mutex_unlock(&priv->lock);
381 lbs_ps_wakeup(priv, 0);
382 mutex_lock(&priv->lock);
383 spin_lock_irqsave(&priv->driver_lock, flags);
385 } else if (action == CMD_SUBCMD_EXIT_PS) {
386 priv->needtowakeup = 0;
387 priv->psstate = PS_STATE_FULL_POWER;
388 lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
390 lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
393 lbs_complete_command(priv, priv->cur_cmd, result);
394 spin_unlock_irqrestore(&priv->driver_lock, flags);
400 /* If the command is not successful, cleanup and return failure */
401 if ((result != 0 || !(respcmd & 0x8000))) {
402 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
405 * Handling errors here
408 case CMD_RET(CMD_GET_HW_SPEC):
409 case CMD_RET(CMD_802_11_RESET):
410 lbs_deb_host("CMD_RESP: reset failed\n");
414 lbs_complete_command(priv, priv->cur_cmd, result);
415 spin_unlock_irqrestore(&priv->driver_lock, flags);
421 spin_unlock_irqrestore(&priv->driver_lock, flags);
423 if (priv->cur_cmd && priv->cur_cmd->callback) {
424 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
427 ret = handle_cmd_response(priv, resp);
429 spin_lock_irqsave(&priv->driver_lock, flags);
432 /* Clean up and Put current command back to cmdfreeq */
433 lbs_complete_command(priv, priv->cur_cmd, result);
435 spin_unlock_irqrestore(&priv->driver_lock, flags);
438 mutex_unlock(&priv->lock);
439 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
443 static int lbs_send_confirmwake(struct lbs_private *priv)
445 struct cmd_header cmd;
448 lbs_deb_enter(LBS_DEB_HOST);
450 cmd.command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
451 cmd.size = cpu_to_le16(sizeof(cmd));
452 cmd.seqnum = cpu_to_le16(++priv->seqnum);
455 lbs_deb_hex(LBS_DEB_HOST, "wake confirm", (u8 *) &cmd,
458 ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &cmd, sizeof(cmd));
460 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
462 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
466 int lbs_process_event(struct lbs_private *priv, u32 event)
470 lbs_deb_enter(LBS_DEB_CMD);
473 case MACREG_INT_CODE_LINK_SENSED:
474 lbs_deb_cmd("EVENT: link sensed\n");
477 case MACREG_INT_CODE_DEAUTHENTICATED:
478 lbs_deb_cmd("EVENT: deauthenticated\n");
479 lbs_mac_event_disconnected(priv);
482 case MACREG_INT_CODE_DISASSOCIATED:
483 lbs_deb_cmd("EVENT: disassociated\n");
484 lbs_mac_event_disconnected(priv);
487 case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
488 lbs_deb_cmd("EVENT: link lost\n");
489 lbs_mac_event_disconnected(priv);
492 case MACREG_INT_CODE_PS_SLEEP:
493 lbs_deb_cmd("EVENT: ps sleep\n");
495 /* handle unexpected PS SLEEP event */
496 if (priv->psstate == PS_STATE_FULL_POWER) {
498 "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
501 priv->psstate = PS_STATE_PRE_SLEEP;
503 lbs_ps_confirm_sleep(priv);
507 case MACREG_INT_CODE_HOST_AWAKE:
508 lbs_deb_cmd("EVENT: host awake\n");
509 if (priv->reset_deep_sleep_wakeup)
510 priv->reset_deep_sleep_wakeup(priv);
511 priv->is_deep_sleep = 0;
512 lbs_send_confirmwake(priv);
515 case MACREG_INT_CODE_DEEP_SLEEP_AWAKE:
516 if (priv->reset_deep_sleep_wakeup)
517 priv->reset_deep_sleep_wakeup(priv);
518 lbs_deb_cmd("EVENT: ds awake\n");
519 priv->is_deep_sleep = 0;
520 priv->wakeup_dev_required = 0;
521 wake_up_interruptible(&priv->ds_awake_q);
524 case MACREG_INT_CODE_PS_AWAKE:
525 lbs_deb_cmd("EVENT: ps awake\n");
526 /* handle unexpected PS AWAKE event */
527 if (priv->psstate == PS_STATE_FULL_POWER) {
529 "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
533 priv->psstate = PS_STATE_AWAKE;
535 if (priv->needtowakeup) {
537 * wait for the command processing to finish
538 * before resuming sending
539 * priv->needtowakeup will be set to FALSE
542 lbs_deb_cmd("waking up ...\n");
543 lbs_ps_wakeup(priv, 0);
547 case MACREG_INT_CODE_MIC_ERR_UNICAST:
548 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
549 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
552 case MACREG_INT_CODE_MIC_ERR_MULTICAST:
553 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
554 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
557 case MACREG_INT_CODE_MIB_CHANGED:
558 lbs_deb_cmd("EVENT: MIB CHANGED\n");
560 case MACREG_INT_CODE_INIT_DONE:
561 lbs_deb_cmd("EVENT: INIT DONE\n");
563 case MACREG_INT_CODE_ADHOC_BCN_LOST:
564 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
566 case MACREG_INT_CODE_RSSI_LOW:
567 lbs_pr_alert("EVENT: rssi low\n");
569 case MACREG_INT_CODE_SNR_LOW:
570 lbs_pr_alert("EVENT: snr low\n");
572 case MACREG_INT_CODE_MAX_FAIL:
573 lbs_pr_alert("EVENT: max fail\n");
575 case MACREG_INT_CODE_RSSI_HIGH:
576 lbs_pr_alert("EVENT: rssi high\n");
578 case MACREG_INT_CODE_SNR_HIGH:
579 lbs_pr_alert("EVENT: snr high\n");
582 case MACREG_INT_CODE_MESH_AUTO_STARTED:
583 /* Ignore spurious autostart events if autostart is disabled */
584 if (!priv->mesh_autostart_enabled) {
585 lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
588 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
589 priv->mesh_connect_status = LBS_CONNECTED;
590 if (priv->mesh_open) {
591 netif_carrier_on(priv->mesh_dev);
592 if (!priv->tx_pending_len)
593 netif_wake_queue(priv->mesh_dev);
595 priv->mode = IW_MODE_ADHOC;
596 schedule_work(&priv->sync_channel);
600 lbs_pr_alert("EVENT: unknown event id %d\n", event);
604 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);