1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3  *
4  * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5  *
6  ******************************************************************************/
7 #include <drv_types.h>
8 #include <rtw_debug.h>
9 #include <hal_data.h>
10 #include <linux/jiffies.h>
11 
12 
_ips_enter(struct adapter * padapter)13 void _ips_enter(struct adapter *padapter)
14 {
15 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
16 
17 	pwrpriv->bips_processing = true;
18 
19 	/*  syn ips_mode with request */
20 	pwrpriv->ips_mode = pwrpriv->ips_mode_req;
21 
22 	pwrpriv->ips_enter_cnts++;
23 
24 	if (rf_off == pwrpriv->change_rfpwrstate) {
25 		pwrpriv->bpower_saving = true;
26 
27 		if (pwrpriv->ips_mode == IPS_LEVEL_2)
28 			pwrpriv->bkeepfwalive = true;
29 
30 		rtw_ips_pwr_down(padapter);
31 		pwrpriv->rf_pwrstate = rf_off;
32 	}
33 	pwrpriv->bips_processing = false;
34 
35 }
36 
ips_enter(struct adapter * padapter)37 void ips_enter(struct adapter *padapter)
38 {
39 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
40 
41 
42 	hal_btcoex_IpsNotify(padapter, pwrpriv->ips_mode_req);
43 
44 	mutex_lock(&pwrpriv->lock);
45 	_ips_enter(padapter);
46 	mutex_unlock(&pwrpriv->lock);
47 }
48 
_ips_leave(struct adapter * padapter)49 int _ips_leave(struct adapter *padapter)
50 {
51 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
52 	int result = _SUCCESS;
53 
54 	if ((pwrpriv->rf_pwrstate == rf_off) && (!pwrpriv->bips_processing)) {
55 		pwrpriv->bips_processing = true;
56 		pwrpriv->change_rfpwrstate = rf_on;
57 		pwrpriv->ips_leave_cnts++;
58 
59 		result = rtw_ips_pwr_up(padapter);
60 		if (result == _SUCCESS) {
61 			pwrpriv->rf_pwrstate = rf_on;
62 		}
63 		pwrpriv->bips_processing = false;
64 
65 		pwrpriv->bkeepfwalive = false;
66 		pwrpriv->bpower_saving = false;
67 	}
68 
69 	return result;
70 }
71 
ips_leave(struct adapter * padapter)72 int ips_leave(struct adapter *padapter)
73 {
74 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
75 	int ret;
76 
77 	if (!is_primary_adapter(padapter))
78 		return _SUCCESS;
79 
80 	mutex_lock(&pwrpriv->lock);
81 	ret = _ips_leave(padapter);
82 	mutex_unlock(&pwrpriv->lock);
83 
84 	if (ret == _SUCCESS)
85 		hal_btcoex_IpsNotify(padapter, IPS_NONE);
86 
87 	return ret;
88 }
89 
rtw_pwr_unassociated_idle(struct adapter * adapter)90 static bool rtw_pwr_unassociated_idle(struct adapter *adapter)
91 {
92 	struct adapter *buddy = adapter->pbuddy_adapter;
93 	struct mlme_priv *pmlmepriv = &(adapter->mlmepriv);
94 	struct xmit_priv *pxmit_priv = &adapter->xmitpriv;
95 
96 	bool ret = false;
97 
98 	if (adapter_to_pwrctl(adapter)->bpower_saving)
99 		goto exit;
100 
101 	if (time_before(jiffies, adapter_to_pwrctl(adapter)->ips_deny_time))
102 		goto exit;
103 
104 	if (check_fwstate(pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR)
105 		|| check_fwstate(pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
106 		|| check_fwstate(pmlmepriv, WIFI_AP_STATE)
107 		|| check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
108 	)
109 		goto exit;
110 
111 	/* consider buddy, if exist */
112 	if (buddy) {
113 		struct mlme_priv *b_pmlmepriv = &(buddy->mlmepriv);
114 
115 		if (check_fwstate(b_pmlmepriv, WIFI_ASOC_STATE|WIFI_SITE_MONITOR)
116 			|| check_fwstate(b_pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
117 			|| check_fwstate(b_pmlmepriv, WIFI_AP_STATE)
118 			|| check_fwstate(b_pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
119 		)
120 			goto exit;
121 	}
122 
123 	if (pxmit_priv->free_xmitbuf_cnt != NR_XMITBUFF ||
124 		pxmit_priv->free_xmit_extbuf_cnt != NR_XMIT_EXTBUFF) {
125 		netdev_dbg(adapter->pnetdev,
126 			   "There are some pkts to transmit\n");
127 		netdev_dbg(adapter->pnetdev,
128 			   "free_xmitbuf_cnt: %d, free_xmit_extbuf_cnt: %d\n",
129 			   pxmit_priv->free_xmitbuf_cnt,
130 			   pxmit_priv->free_xmit_extbuf_cnt);
131 		goto exit;
132 	}
133 
134 	ret = true;
135 
136 exit:
137 	return ret;
138 }
139 
140 
141 /*
142  * ATTENTION:
143  *rtw_ps_processor() doesn't handle LPS.
144  */
rtw_ps_processor(struct adapter * padapter)145 void rtw_ps_processor(struct adapter *padapter)
146 {
147 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
148 	struct dvobj_priv *psdpriv = padapter->dvobj;
149 	struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
150 	u32 ps_deny = 0;
151 
152 	mutex_lock(&adapter_to_pwrctl(padapter)->lock);
153 	ps_deny = rtw_ps_deny_get(padapter);
154 	mutex_unlock(&adapter_to_pwrctl(padapter)->lock);
155 	if (ps_deny != 0)
156 		goto exit;
157 
158 	if (pwrpriv->bInSuspend) {/* system suspend or autosuspend */
159 		pdbgpriv->dbg_ps_insuspend_cnt++;
160 		return;
161 	}
162 
163 	pwrpriv->ps_processing = true;
164 
165 	if (pwrpriv->ips_mode_req == IPS_NONE)
166 		goto exit;
167 
168 	if (!rtw_pwr_unassociated_idle(padapter))
169 		goto exit;
170 
171 	if ((pwrpriv->rf_pwrstate == rf_on) && ((pwrpriv->pwr_state_check_cnts%4) == 0)) {
172 		pwrpriv->change_rfpwrstate = rf_off;
173 		{
174 			ips_enter(padapter);
175 		}
176 	}
177 exit:
178 	pwrpriv->ps_processing = false;
179 }
180 
pwr_state_check_handler(struct timer_list * t)181 static void pwr_state_check_handler(struct timer_list *t)
182 {
183 	struct pwrctrl_priv *pwrctrlpriv =
184 		from_timer(pwrctrlpriv, t, pwr_state_check_timer);
185 	struct adapter *padapter = pwrctrlpriv->adapter;
186 
187 	rtw_ps_cmd(padapter);
188 }
189 
traffic_check_for_leave_lps(struct adapter * padapter,u8 tx,u32 tx_packets)190 void traffic_check_for_leave_lps(struct adapter *padapter, u8 tx, u32 tx_packets)
191 {
192 	static unsigned long start_time;
193 	static u32 xmit_cnt;
194 	u8 bLeaveLPS = false;
195 	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
196 
197 
198 
199 	if (tx) { /* from tx */
200 		xmit_cnt += tx_packets;
201 
202 		if (start_time == 0)
203 			start_time = jiffies;
204 
205 		if (jiffies_to_msecs(jiffies - start_time) > 2000) { /*  2 sec == watch dog timer */
206 			if (xmit_cnt > 8) {
207 				if (adapter_to_pwrctl(padapter)->bLeisurePs
208 				    && (adapter_to_pwrctl(padapter)->pwr_mode != PS_MODE_ACTIVE)
209 				    && !(hal_btcoex_IsBtControlLps(padapter))) {
210 					bLeaveLPS = true;
211 				}
212 			}
213 
214 			start_time = jiffies;
215 			xmit_cnt = 0;
216 		}
217 
218 	} else { /*  from rx path */
219 		if (pmlmepriv->LinkDetectInfo.NumRxUnicastOkInPeriod > 4/*2*/) {
220 			if (adapter_to_pwrctl(padapter)->bLeisurePs
221 			    && (adapter_to_pwrctl(padapter)->pwr_mode != PS_MODE_ACTIVE)
222 			    && !(hal_btcoex_IsBtControlLps(padapter)))
223 				bLeaveLPS = true;
224 		}
225 	}
226 
227 	if (bLeaveLPS)
228 		/* rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_LEAVE, 1); */
229 		rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_LEAVE, tx?0:1);
230 }
231 
232 /*
233  * Description:
234  *This function MUST be called under power lock protect
235  *
236  * Parameters
237  *padapter
238  *pslv			power state level, only could be PS_STATE_S0 ~ PS_STATE_S4
239  *
240  */
rtw_set_rpwm(struct adapter * padapter,u8 pslv)241 void rtw_set_rpwm(struct adapter *padapter, u8 pslv)
242 {
243 	u8 rpwm;
244 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
245 	u8 cpwm_orig;
246 
247 	pslv = PS_STATE(pslv);
248 
249 	if (!pwrpriv->brpwmtimeout) {
250 		if (pwrpriv->rpwm == pslv ||
251 		    (pwrpriv->rpwm >= PS_STATE_S2 && pslv >= PS_STATE_S2))
252 			return;
253 
254 	}
255 
256 	if ((padapter->bSurpriseRemoved) || !(padapter->hw_init_completed)) {
257 		pwrpriv->cpwm = PS_STATE_S4;
258 
259 		return;
260 	}
261 
262 	if (padapter->bDriverStopped) {
263 		if (pslv < PS_STATE_S2)
264 			return;
265 	}
266 
267 	rpwm = pslv | pwrpriv->tog;
268 	/*  only when from PS_STATE S0/S1 to S2 and higher needs ACK */
269 	if ((pwrpriv->cpwm < PS_STATE_S2) && (pslv >= PS_STATE_S2))
270 		rpwm |= PS_ACK;
271 
272 	pwrpriv->rpwm = pslv;
273 
274 	cpwm_orig = 0;
275 	if (rpwm & PS_ACK)
276 		rtw_hal_get_hwreg(padapter, HW_VAR_CPWM, &cpwm_orig);
277 
278 	if (rpwm & PS_ACK)
279 		_set_timer(&pwrpriv->pwr_rpwm_timer, LPS_RPWM_WAIT_MS);
280 	rtw_hal_set_hwreg(padapter, HW_VAR_SET_RPWM, (u8 *)(&rpwm));
281 
282 	pwrpriv->tog += 0x80;
283 
284 	/*  No LPS 32K, No Ack */
285 	if (rpwm & PS_ACK) {
286 		unsigned long start_time;
287 		u8 cpwm_now;
288 		u8 poll_cnt = 0;
289 
290 		start_time = jiffies;
291 
292 		/*  polling cpwm */
293 		do {
294 			mdelay(1);
295 			poll_cnt++;
296 			rtw_hal_get_hwreg(padapter, HW_VAR_CPWM, &cpwm_now);
297 			if ((cpwm_orig ^ cpwm_now) & 0x80) {
298 				pwrpriv->cpwm = PS_STATE_S4;
299 				pwrpriv->cpwm_tog = cpwm_now & PS_TOGGLE;
300 				break;
301 			}
302 
303 			if (jiffies_to_msecs(jiffies - start_time) > LPS_RPWM_WAIT_MS) {
304 				_set_timer(&pwrpriv->pwr_rpwm_timer, 1);
305 				break;
306 			}
307 		} while (1);
308 	} else
309 		pwrpriv->cpwm = pslv;
310 }
311 
PS_RDY_CHECK(struct adapter * padapter)312 static u8 PS_RDY_CHECK(struct adapter *padapter)
313 {
314 	unsigned long curr_time, delta_time;
315 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
316 	struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
317 
318 	if (pwrpriv->bInSuspend)
319 		return false;
320 
321 	curr_time = jiffies;
322 
323 	delta_time = curr_time - pwrpriv->DelayLPSLastTimeStamp;
324 
325 	if (delta_time < LPS_DELAY_TIME)
326 		return false;
327 
328 	if (check_fwstate(pmlmepriv, WIFI_SITE_MONITOR)
329 		|| check_fwstate(pmlmepriv, WIFI_UNDER_LINKING|WIFI_UNDER_WPS)
330 		|| check_fwstate(pmlmepriv, WIFI_AP_STATE)
331 		|| check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE|WIFI_ADHOC_STATE)
332 		|| rtw_is_scan_deny(padapter)
333 	)
334 		return false;
335 
336 	if (padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X &&
337 	    !padapter->securitypriv.binstallGrpkey)
338 		return false;
339 
340 	if (!rtw_cfg80211_pwr_mgmt(padapter))
341 		return false;
342 
343 	return true;
344 }
345 
rtw_set_ps_mode(struct adapter * padapter,u8 ps_mode,u8 smart_ps,u8 bcn_ant_mode,const char * msg)346 void rtw_set_ps_mode(struct adapter *padapter, u8 ps_mode, u8 smart_ps, u8 bcn_ant_mode, const char *msg)
347 {
348 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
349 
350 	if (ps_mode > PM_Card_Disable)
351 		return;
352 
353 	if (pwrpriv->pwr_mode == ps_mode)
354 		if (ps_mode == PS_MODE_ACTIVE)
355 			return;
356 
357 
358 	mutex_lock(&pwrpriv->lock);
359 
360 	/* if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) */
361 	if (ps_mode == PS_MODE_ACTIVE) {
362 		if (!(hal_btcoex_IsBtControlLps(padapter))
363 				|| (hal_btcoex_IsBtControlLps(padapter)
364 					&& !(hal_btcoex_IsLpsOn(padapter)))) {
365 			pwrpriv->pwr_mode = ps_mode;
366 			rtw_set_rpwm(padapter, PS_STATE_S4);
367 
368 			rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
369 			pwrpriv->fw_current_in_ps_mode = false;
370 
371 			hal_btcoex_LpsNotify(padapter, ps_mode);
372 		}
373 	} else {
374 		if ((PS_RDY_CHECK(padapter) && check_fwstate(&padapter->mlmepriv, WIFI_ASOC_STATE)) ||
375 		    ((hal_btcoex_IsBtControlLps(padapter)) && (hal_btcoex_IsLpsOn(padapter)))
376 			) {
377 			u8 pslv;
378 
379 			hal_btcoex_LpsNotify(padapter, ps_mode);
380 
381 			pwrpriv->fw_current_in_ps_mode = true;
382 			pwrpriv->pwr_mode = ps_mode;
383 			pwrpriv->smart_ps = smart_ps;
384 			pwrpriv->bcn_ant_mode = bcn_ant_mode;
385 			rtw_hal_set_hwreg(padapter, HW_VAR_H2C_FW_PWRMODE, (u8 *)(&ps_mode));
386 
387 			pslv = PS_STATE_S2;
388 			if (pwrpriv->alives == 0)
389 				pslv = PS_STATE_S0;
390 
391 			if (!(hal_btcoex_IsBtDisabled(padapter)) &&
392 			    (hal_btcoex_IsBtControlLps(padapter))) {
393 				u8 val8;
394 
395 				val8 = hal_btcoex_LpsVal(padapter);
396 				if (val8 & BIT(4))
397 					pslv = PS_STATE_S2;
398 			}
399 
400 			rtw_set_rpwm(padapter, pslv);
401 		}
402 	}
403 
404 	mutex_unlock(&pwrpriv->lock);
405 }
406 
407 /*
408  * Return:
409  *0:	Leave OK
410  *-1:	Timeout
411  *-2:	Other error
412  */
LPS_RF_ON_check(struct adapter * padapter,u32 delay_ms)413 s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
414 {
415 	unsigned long start_time;
416 	u8 bAwake = false;
417 	s32 err = 0;
418 
419 
420 	start_time = jiffies;
421 	while (1) {
422 		rtw_hal_get_hwreg(padapter, HW_VAR_FWLPS_RF_ON, &bAwake);
423 		if (bAwake)
424 			break;
425 
426 		if (padapter->bSurpriseRemoved) {
427 			err = -2;
428 			break;
429 		}
430 
431 		if (jiffies_to_msecs(jiffies - start_time) > delay_ms) {
432 			err = -1;
433 			break;
434 		}
435 		msleep(1);
436 	}
437 
438 	return err;
439 }
440 
441 /*  */
442 /* 	Description: */
443 /* 		Enter the leisure power save mode. */
444 /*  */
LPS_Enter(struct adapter * padapter,const char * msg)445 void LPS_Enter(struct adapter *padapter, const char *msg)
446 {
447 	struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
448 	struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
449 	int n_assoc_iface = 0;
450 	char buf[32] = {0};
451 
452 	if (hal_btcoex_IsBtControlLps(padapter))
453 		return;
454 
455 	/* Skip lps enter request if number of assocated adapters is not 1 */
456 	if (check_fwstate(&(dvobj->padapters->mlmepriv), WIFI_ASOC_STATE))
457 		n_assoc_iface++;
458 	if (n_assoc_iface != 1)
459 		return;
460 
461 	/* Skip lps enter request for adapter not port0 */
462 	if (get_iface_type(padapter) != IFACE_PORT0)
463 		return;
464 
465 	if (!PS_RDY_CHECK(dvobj->padapters))
466 		return;
467 
468 	if (pwrpriv->bLeisurePs) {
469 		/*  Idle for a while if we connect to AP a while ago. */
470 		if (pwrpriv->LpsIdleCount >= 2) { /*   4 Sec */
471 			if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
472 				scnprintf(buf, sizeof(buf), "WIFI-%s", msg);
473 				pwrpriv->bpower_saving = true;
474 				rtw_set_ps_mode(padapter, pwrpriv->power_mgnt, padapter->registrypriv.smart_ps, 0, buf);
475 			}
476 		} else
477 			pwrpriv->LpsIdleCount++;
478 	}
479 }
480 
481 /*  */
482 /* 	Description: */
483 /* 		Leave the leisure power save mode. */
484 /*  */
LPS_Leave(struct adapter * padapter,const char * msg)485 void LPS_Leave(struct adapter *padapter, const char *msg)
486 {
487 #define LPS_LEAVE_TIMEOUT_MS 100
488 
489 	struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
490 	struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
491 	char buf[32] = {0};
492 
493 	if (hal_btcoex_IsBtControlLps(padapter))
494 		return;
495 
496 	if (pwrpriv->bLeisurePs) {
497 		if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
498 			scnprintf(buf, sizeof(buf), "WIFI-%s", msg);
499 			rtw_set_ps_mode(padapter, PS_MODE_ACTIVE, 0, 0, buf);
500 
501 			if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
502 				LPS_RF_ON_check(padapter, LPS_LEAVE_TIMEOUT_MS);
503 		}
504 	}
505 
506 	pwrpriv->bpower_saving = false;
507 }
508 
LeaveAllPowerSaveModeDirect(struct adapter * Adapter)509 void LeaveAllPowerSaveModeDirect(struct adapter *Adapter)
510 {
511 	struct adapter *pri_padapter = GET_PRIMARY_ADAPTER(Adapter);
512 	struct mlme_priv *pmlmepriv = &(Adapter->mlmepriv);
513 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(Adapter);
514 
515 	if (Adapter->bSurpriseRemoved)
516 		return;
517 
518 	if (check_fwstate(pmlmepriv, _FW_LINKED)) { /* connect */
519 
520 		if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
521 			return;
522 
523 		mutex_lock(&pwrpriv->lock);
524 
525 		rtw_set_rpwm(Adapter, PS_STATE_S4);
526 
527 		mutex_unlock(&pwrpriv->lock);
528 
529 		rtw_lps_ctrl_wk_cmd(pri_padapter, LPS_CTRL_LEAVE, 0);
530 	} else {
531 		if (pwrpriv->rf_pwrstate == rf_off)
532 			ips_leave(pri_padapter);
533 	}
534 }
535 
536 /*  */
537 /*  Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
538 /*  Move code to function by tynli. 2010.03.26. */
539 /*  */
LeaveAllPowerSaveMode(struct adapter * Adapter)540 void LeaveAllPowerSaveMode(struct adapter *Adapter)
541 {
542 	struct dvobj_priv *dvobj = adapter_to_dvobj(Adapter);
543 	u8 enqueue = 0;
544 	int n_assoc_iface = 0;
545 
546 	if (!Adapter->bup)
547 		return;
548 
549 	if (Adapter->bSurpriseRemoved)
550 		return;
551 
552 	if (check_fwstate(&(dvobj->padapters->mlmepriv), WIFI_ASOC_STATE))
553 		n_assoc_iface++;
554 
555 	if (n_assoc_iface) { /* connect */
556 		enqueue = 1;
557 
558 		rtw_lps_ctrl_wk_cmd(Adapter, LPS_CTRL_LEAVE, enqueue);
559 
560 		LPS_Leave_check(Adapter);
561 	} else {
562 		if (adapter_to_pwrctl(Adapter)->rf_pwrstate == rf_off) {
563 			ips_leave(Adapter);
564 		}
565 	}
566 }
567 
LPS_Leave_check(struct adapter * padapter)568 void LPS_Leave_check(struct adapter *padapter)
569 {
570 	struct pwrctrl_priv *pwrpriv;
571 	unsigned long	start_time;
572 	u8 bReady;
573 
574 	pwrpriv = adapter_to_pwrctl(padapter);
575 
576 	bReady = false;
577 	start_time = jiffies;
578 
579 	cond_resched();
580 
581 	while (1) {
582 		mutex_lock(&pwrpriv->lock);
583 
584 		if (padapter->bSurpriseRemoved ||
585 		    !(padapter->hw_init_completed) ||
586 		    (pwrpriv->pwr_mode == PS_MODE_ACTIVE))
587 			bReady = true;
588 
589 		mutex_unlock(&pwrpriv->lock);
590 
591 		if (bReady)
592 			break;
593 
594 		if (jiffies_to_msecs(jiffies - start_time) > 100)
595 			break;
596 
597 		msleep(1);
598 	}
599 }
600 
601 /*
602  * Caller:ISR handler...
603  *
604  * This will be called when CPWM interrupt is up.
605  *
606  * using to update cpwn of drv; and drv willl make a decision to up or down pwr level
607  */
cpwm_int_hdl(struct adapter * padapter,struct reportpwrstate_parm * preportpwrstate)608 void cpwm_int_hdl(struct adapter *padapter, struct reportpwrstate_parm *preportpwrstate)
609 {
610 	struct pwrctrl_priv *pwrpriv;
611 
612 	pwrpriv = adapter_to_pwrctl(padapter);
613 
614 	mutex_lock(&pwrpriv->lock);
615 
616 	if (pwrpriv->rpwm < PS_STATE_S2)
617 		goto exit;
618 
619 	pwrpriv->cpwm = PS_STATE(preportpwrstate->state);
620 	pwrpriv->cpwm_tog = preportpwrstate->state & PS_TOGGLE;
621 
622 	if (pwrpriv->cpwm >= PS_STATE_S2) {
623 		if (pwrpriv->alives & CMD_ALIVE)
624 			complete(&padapter->cmdpriv.cmd_queue_comp);
625 
626 		if (pwrpriv->alives & XMIT_ALIVE)
627 			complete(&padapter->xmitpriv.xmit_comp);
628 	}
629 
630 exit:
631 	mutex_unlock(&pwrpriv->lock);
632 
633 }
634 
cpwm_event_callback(struct work_struct * work)635 static void cpwm_event_callback(struct work_struct *work)
636 {
637 	struct pwrctrl_priv *pwrpriv = container_of(work, struct pwrctrl_priv, cpwm_event);
638 	struct dvobj_priv *dvobj = pwrctl_to_dvobj(pwrpriv);
639 	struct adapter *adapter = dvobj->if1;
640 	struct reportpwrstate_parm report;
641 
642 	report.state = PS_STATE_S2;
643 	cpwm_int_hdl(adapter, &report);
644 }
645 
rpwmtimeout_workitem_callback(struct work_struct * work)646 static void rpwmtimeout_workitem_callback(struct work_struct *work)
647 {
648 	struct adapter *padapter;
649 	struct dvobj_priv *dvobj;
650 	struct pwrctrl_priv *pwrpriv;
651 
652 
653 	pwrpriv = container_of(work, struct pwrctrl_priv, rpwmtimeoutwi);
654 	dvobj = pwrctl_to_dvobj(pwrpriv);
655 	padapter = dvobj->if1;
656 
657 	mutex_lock(&pwrpriv->lock);
658 	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
659 		goto exit;
660 
661 	mutex_unlock(&pwrpriv->lock);
662 
663 	if (rtw_read8(padapter, 0x100) != 0xEA) {
664 		struct reportpwrstate_parm report;
665 
666 		report.state = PS_STATE_S2;
667 		cpwm_int_hdl(padapter, &report);
668 
669 		return;
670 	}
671 
672 	mutex_lock(&pwrpriv->lock);
673 
674 	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
675 		goto exit;
676 
677 	pwrpriv->brpwmtimeout = true;
678 	rtw_set_rpwm(padapter, pwrpriv->rpwm);
679 	pwrpriv->brpwmtimeout = false;
680 
681 exit:
682 	mutex_unlock(&pwrpriv->lock);
683 }
684 
685 /*
686  * This function is a timer handler, can't do any IO in it.
687  */
pwr_rpwm_timeout_handler(struct timer_list * t)688 static void pwr_rpwm_timeout_handler(struct timer_list *t)
689 {
690 	struct pwrctrl_priv *pwrpriv = from_timer(pwrpriv, t, pwr_rpwm_timer);
691 
692 	if ((pwrpriv->rpwm == pwrpriv->cpwm) || (pwrpriv->cpwm >= PS_STATE_S2))
693 		return;
694 
695 	_set_workitem(&pwrpriv->rpwmtimeoutwi);
696 }
697 
register_task_alive(struct pwrctrl_priv * pwrctrl,u32 tag)698 static inline void register_task_alive(struct pwrctrl_priv *pwrctrl, u32 tag)
699 {
700 	pwrctrl->alives |= tag;
701 }
702 
unregister_task_alive(struct pwrctrl_priv * pwrctrl,u32 tag)703 static inline void unregister_task_alive(struct pwrctrl_priv *pwrctrl, u32 tag)
704 {
705 	pwrctrl->alives &= ~tag;
706 }
707 
708 
709 /*
710  * Description:
711  *Check if the fw_pwrstate is okay for I/O.
712  *If not (cpwm is less than S2), then the sub-routine
713  *will raise the cpwm to be greater than or equal to S2.
714  *
715  *Calling Context: Passive
716  *
717  *Constraint:
718  *	1. this function will request pwrctrl->lock
719  *
720  * Return Value:
721  *_SUCCESS	hardware is ready for I/O
722  *_FAIL		can't I/O right now
723  */
rtw_register_task_alive(struct adapter * padapter,u32 task)724 s32 rtw_register_task_alive(struct adapter *padapter, u32 task)
725 {
726 	s32 res;
727 	struct pwrctrl_priv *pwrctrl;
728 	u8 pslv;
729 
730 	res = _SUCCESS;
731 	pwrctrl = adapter_to_pwrctl(padapter);
732 	pslv = PS_STATE_S2;
733 
734 	mutex_lock(&pwrctrl->lock);
735 
736 	register_task_alive(pwrctrl, task);
737 
738 	if (pwrctrl->fw_current_in_ps_mode) {
739 		if (pwrctrl->cpwm < pslv) {
740 			if (pwrctrl->cpwm < PS_STATE_S2)
741 				res = _FAIL;
742 			if (pwrctrl->rpwm < pslv)
743 				rtw_set_rpwm(padapter, pslv);
744 		}
745 	}
746 
747 	mutex_unlock(&pwrctrl->lock);
748 
749 	if (res == _FAIL)
750 		if (pwrctrl->cpwm >= PS_STATE_S2)
751 			res = _SUCCESS;
752 
753 	return res;
754 }
755 
756 /*
757  * Description:
758  *If task is done, call this func. to power down firmware again.
759  *
760  *Constraint:
761  *	1. this function will request pwrctrl->lock
762  *
763  * Return Value:
764  *none
765  */
rtw_unregister_task_alive(struct adapter * padapter,u32 task)766 void rtw_unregister_task_alive(struct adapter *padapter, u32 task)
767 {
768 	struct pwrctrl_priv *pwrctrl;
769 	u8 pslv;
770 
771 	pwrctrl = adapter_to_pwrctl(padapter);
772 	pslv = PS_STATE_S0;
773 
774 	if (!(hal_btcoex_IsBtDisabled(padapter)) && hal_btcoex_IsBtControlLps(padapter)) {
775 		u8 val8;
776 
777 		val8 = hal_btcoex_LpsVal(padapter);
778 		if (val8 & BIT(4))
779 			pslv = PS_STATE_S2;
780 	}
781 
782 	mutex_lock(&pwrctrl->lock);
783 
784 	unregister_task_alive(pwrctrl, task);
785 
786 	if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE) && pwrctrl->fw_current_in_ps_mode) {
787 		if (pwrctrl->cpwm > pslv)
788 			if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
789 				rtw_set_rpwm(padapter, pslv);
790 
791 	}
792 
793 	mutex_unlock(&pwrctrl->lock);
794 }
795 
796 /*
797  * Caller: rtw_xmit_thread
798  *
799  * Check if the fw_pwrstate is okay for xmit.
800  * If not (cpwm is less than S3), then the sub-routine
801  * will raise the cpwm to be greater than or equal to S3.
802  *
803  * Calling Context: Passive
804  *
805  * Return Value:
806  * _SUCCESS	rtw_xmit_thread can write fifo/txcmd afterwards.
807  * _FAIL		rtw_xmit_thread can not do anything.
808  */
rtw_register_tx_alive(struct adapter * padapter)809 s32 rtw_register_tx_alive(struct adapter *padapter)
810 {
811 	s32 res;
812 	struct pwrctrl_priv *pwrctrl;
813 	u8 pslv;
814 
815 	res = _SUCCESS;
816 	pwrctrl = adapter_to_pwrctl(padapter);
817 	pslv = PS_STATE_S2;
818 
819 	mutex_lock(&pwrctrl->lock);
820 
821 	register_task_alive(pwrctrl, XMIT_ALIVE);
822 
823 	if (pwrctrl->fw_current_in_ps_mode) {
824 		if (pwrctrl->cpwm < pslv) {
825 			if (pwrctrl->cpwm < PS_STATE_S2)
826 				res = _FAIL;
827 			if (pwrctrl->rpwm < pslv)
828 				rtw_set_rpwm(padapter, pslv);
829 		}
830 	}
831 
832 	mutex_unlock(&pwrctrl->lock);
833 
834 	if (res == _FAIL)
835 		if (pwrctrl->cpwm >= PS_STATE_S2)
836 			res = _SUCCESS;
837 
838 	return res;
839 }
840 
841 /*
842  * Caller: rtw_cmd_thread
843  *
844  * Check if the fw_pwrstate is okay for issuing cmd.
845  * If not (cpwm should be is less than S2), then the sub-routine
846  * will raise the cpwm to be greater than or equal to S2.
847  *
848  * Calling Context: Passive
849  *
850  * Return Value:
851  *_SUCCESS	rtw_cmd_thread can issue cmds to firmware afterwards.
852  *_FAIL		rtw_cmd_thread can not do anything.
853  */
rtw_register_cmd_alive(struct adapter * padapter)854 s32 rtw_register_cmd_alive(struct adapter *padapter)
855 {
856 	s32 res;
857 	struct pwrctrl_priv *pwrctrl;
858 	u8 pslv;
859 
860 	res = _SUCCESS;
861 	pwrctrl = adapter_to_pwrctl(padapter);
862 	pslv = PS_STATE_S2;
863 
864 	mutex_lock(&pwrctrl->lock);
865 
866 	register_task_alive(pwrctrl, CMD_ALIVE);
867 
868 	if (pwrctrl->fw_current_in_ps_mode) {
869 		if (pwrctrl->cpwm < pslv) {
870 			if (pwrctrl->cpwm < PS_STATE_S2)
871 				res = _FAIL;
872 			if (pwrctrl->rpwm < pslv)
873 				rtw_set_rpwm(padapter, pslv);
874 		}
875 	}
876 
877 	mutex_unlock(&pwrctrl->lock);
878 
879 	if (res == _FAIL)
880 		if (pwrctrl->cpwm >= PS_STATE_S2)
881 			res = _SUCCESS;
882 
883 	return res;
884 }
885 
886 /*
887  * Caller: ISR
888  *
889  * If ISR's txdone,
890  * No more pkts for TX,
891  * Then driver shall call this fun. to power down firmware again.
892  */
rtw_unregister_tx_alive(struct adapter * padapter)893 void rtw_unregister_tx_alive(struct adapter *padapter)
894 {
895 	struct pwrctrl_priv *pwrctrl;
896 	u8 pslv;
897 
898 	pwrctrl = adapter_to_pwrctl(padapter);
899 	pslv = PS_STATE_S0;
900 
901 	if (!(hal_btcoex_IsBtDisabled(padapter)) && hal_btcoex_IsBtControlLps(padapter)) {
902 		u8 val8;
903 
904 		val8 = hal_btcoex_LpsVal(padapter);
905 		if (val8 & BIT(4))
906 			pslv = PS_STATE_S2;
907 	}
908 
909 	mutex_lock(&pwrctrl->lock);
910 
911 	unregister_task_alive(pwrctrl, XMIT_ALIVE);
912 
913 	if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE) && pwrctrl->fw_current_in_ps_mode) {
914 		if (pwrctrl->cpwm > pslv)
915 			if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
916 				rtw_set_rpwm(padapter, pslv);
917 	}
918 
919 	mutex_unlock(&pwrctrl->lock);
920 }
921 
922 /*
923  * Caller: ISR
924  *
925  * If all commands have been done,
926  * and no more command to do,
927  * then driver shall call this fun. to power down firmware again.
928  */
rtw_unregister_cmd_alive(struct adapter * padapter)929 void rtw_unregister_cmd_alive(struct adapter *padapter)
930 {
931 	struct pwrctrl_priv *pwrctrl;
932 	u8 pslv;
933 
934 	pwrctrl = adapter_to_pwrctl(padapter);
935 	pslv = PS_STATE_S0;
936 
937 	if (!(hal_btcoex_IsBtDisabled(padapter)) && hal_btcoex_IsBtControlLps(padapter)) {
938 		u8 val8;
939 
940 		val8 = hal_btcoex_LpsVal(padapter);
941 		if (val8 & BIT(4))
942 			pslv = PS_STATE_S2;
943 	}
944 
945 	mutex_lock(&pwrctrl->lock);
946 
947 	unregister_task_alive(pwrctrl, CMD_ALIVE);
948 
949 	if ((pwrctrl->pwr_mode != PS_MODE_ACTIVE) && pwrctrl->fw_current_in_ps_mode) {
950 		if (pwrctrl->cpwm > pslv) {
951 			if ((pslv >= PS_STATE_S2) || (pwrctrl->alives == 0))
952 				rtw_set_rpwm(padapter, pslv);
953 		}
954 	}
955 
956 	mutex_unlock(&pwrctrl->lock);
957 }
958 
rtw_init_pwrctrl_priv(struct adapter * padapter)959 void rtw_init_pwrctrl_priv(struct adapter *padapter)
960 {
961 	struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);
962 
963 	mutex_init(&pwrctrlpriv->lock);
964 	pwrctrlpriv->rf_pwrstate = rf_on;
965 	pwrctrlpriv->ips_enter_cnts = 0;
966 	pwrctrlpriv->ips_leave_cnts = 0;
967 	pwrctrlpriv->bips_processing = false;
968 
969 	pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
970 	pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;
971 
972 	pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
973 	pwrctrlpriv->pwr_state_check_cnts = 0;
974 	pwrctrlpriv->bInternalAutoSuspend = false;
975 	pwrctrlpriv->bInSuspend = false;
976 	pwrctrlpriv->bkeepfwalive = false;
977 
978 	pwrctrlpriv->LpsIdleCount = 0;
979 	pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;/*  PS_MODE_MIN; */
980 	pwrctrlpriv->bLeisurePs = pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE;
981 
982 	pwrctrlpriv->fw_current_in_ps_mode = false;
983 
984 	pwrctrlpriv->rpwm = 0;
985 	pwrctrlpriv->cpwm = PS_STATE_S4;
986 
987 	pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
988 	pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
989 	pwrctrlpriv->bcn_ant_mode = 0;
990 	pwrctrlpriv->dtim = 0;
991 
992 	pwrctrlpriv->tog = 0x80;
993 
994 	rtw_hal_set_hwreg(padapter, HW_VAR_SET_RPWM, (u8 *)(&pwrctrlpriv->rpwm));
995 
996 	_init_workitem(&pwrctrlpriv->cpwm_event, cpwm_event_callback, NULL);
997 
998 	pwrctrlpriv->brpwmtimeout = false;
999 	pwrctrlpriv->adapter = padapter;
1000 	_init_workitem(&pwrctrlpriv->rpwmtimeoutwi, rpwmtimeout_workitem_callback, NULL);
1001 	timer_setup(&pwrctrlpriv->pwr_rpwm_timer, pwr_rpwm_timeout_handler, 0);
1002 	timer_setup(&pwrctrlpriv->pwr_state_check_timer,
1003 		    pwr_state_check_handler, 0);
1004 
1005 	pwrctrlpriv->wowlan_mode = false;
1006 	pwrctrlpriv->wowlan_ap_mode = false;
1007 }
1008 
1009 
rtw_free_pwrctrl_priv(struct adapter * adapter)1010 void rtw_free_pwrctrl_priv(struct adapter *adapter)
1011 {
1012 }
1013 
rtw_set_ips_deny(struct adapter * padapter,u32 ms)1014 inline void rtw_set_ips_deny(struct adapter *padapter, u32 ms)
1015 {
1016 	struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter);
1017 	pwrpriv->ips_deny_time = jiffies + msecs_to_jiffies(ms);
1018 }
1019 
1020 /*
1021 * rtw_pwr_wakeup - Wake the NIC up from: 1)IPS. 2)USB autosuspend
1022 * @adapter: pointer to struct adapter structure
1023 * @ips_deffer_ms: the ms will prevent from falling into IPS after wakeup
1024 * Return _SUCCESS or _FAIL
1025 */
1026 
_rtw_pwr_wakeup(struct adapter * padapter,u32 ips_deffer_ms,const char * caller)1027 int _rtw_pwr_wakeup(struct adapter *padapter, u32 ips_deffer_ms, const char *caller)
1028 {
1029 	struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
1030 	struct pwrctrl_priv *pwrpriv = dvobj_to_pwrctl(dvobj);
1031 	struct mlme_priv *pmlmepriv;
1032 	int ret = _SUCCESS;
1033 	unsigned long start = jiffies;
1034 	unsigned long deny_time = jiffies + msecs_to_jiffies(ips_deffer_ms);
1035 
1036 	/* for LPS */
1037 	LeaveAllPowerSaveMode(padapter);
1038 
1039 	/* IPS still bound with primary adapter */
1040 	padapter = GET_PRIMARY_ADAPTER(padapter);
1041 	pmlmepriv = &padapter->mlmepriv;
1042 
1043 	if (time_before(pwrpriv->ips_deny_time, deny_time))
1044 		pwrpriv->ips_deny_time = deny_time;
1045 
1046 
1047 	if (pwrpriv->ps_processing)
1048 		while (pwrpriv->ps_processing && jiffies_to_msecs(jiffies - start) <= 3000)
1049 			mdelay(10);
1050 
1051 	if (!(pwrpriv->bInternalAutoSuspend) && pwrpriv->bInSuspend)
1052 		while (pwrpriv->bInSuspend && jiffies_to_msecs(jiffies - start) <= 3000
1053 		)
1054 			mdelay(10);
1055 
1056 	/* System suspend is not allowed to wakeup */
1057 	if (!(pwrpriv->bInternalAutoSuspend) && pwrpriv->bInSuspend) {
1058 		ret = _FAIL;
1059 		goto exit;
1060 	}
1061 
1062 	/* block??? */
1063 	if (pwrpriv->bInternalAutoSuspend  && padapter->net_closed) {
1064 		ret = _FAIL;
1065 		goto exit;
1066 	}
1067 
1068 	/* I think this should be check in IPS, LPS, autosuspend functions... */
1069 	if (check_fwstate(pmlmepriv, _FW_LINKED)) {
1070 		ret = _SUCCESS;
1071 		goto exit;
1072 	}
1073 
1074 	if (rf_off == pwrpriv->rf_pwrstate) {
1075 		{
1076 			if (ips_leave(padapter) == _FAIL) {
1077 				ret = _FAIL;
1078 				goto exit;
1079 			}
1080 		}
1081 	}
1082 
1083 	/* TODO: the following checking need to be merged... */
1084 	if (padapter->bDriverStopped || !padapter->bup || !padapter->hw_init_completed) {
1085 		ret = false;
1086 		goto exit;
1087 	}
1088 
1089 exit:
1090 	deny_time = jiffies + msecs_to_jiffies(ips_deffer_ms);
1091 	if (time_before(pwrpriv->ips_deny_time, deny_time))
1092 		pwrpriv->ips_deny_time = deny_time;
1093 	return ret;
1094 
1095 }
1096 
rtw_pm_set_lps(struct adapter * padapter,u8 mode)1097 int rtw_pm_set_lps(struct adapter *padapter, u8 mode)
1098 {
1099 	int	ret = 0;
1100 	struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);
1101 
1102 	if (mode < PS_MODE_NUM) {
1103 		if (pwrctrlpriv->power_mgnt != mode) {
1104 			if (mode == PS_MODE_ACTIVE)
1105 				LeaveAllPowerSaveMode(padapter);
1106 			else
1107 				pwrctrlpriv->LpsIdleCount = 2;
1108 
1109 			pwrctrlpriv->power_mgnt = mode;
1110 			pwrctrlpriv->bLeisurePs =
1111 				pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE;
1112 		}
1113 	} else
1114 		ret = -EINVAL;
1115 
1116 	return ret;
1117 }
1118 
rtw_pm_set_ips(struct adapter * padapter,u8 mode)1119 int rtw_pm_set_ips(struct adapter *padapter, u8 mode)
1120 {
1121 	struct pwrctrl_priv *pwrctrlpriv = adapter_to_pwrctl(padapter);
1122 
1123 	if (mode == IPS_NORMAL || mode == IPS_LEVEL_2) {
1124 		rtw_ips_mode_req(pwrctrlpriv, mode);
1125 		return 0;
1126 	} else if (mode == IPS_NONE) {
1127 		rtw_ips_mode_req(pwrctrlpriv, mode);
1128 		if ((padapter->bSurpriseRemoved == 0) && (rtw_pwr_wakeup(padapter) == _FAIL))
1129 			return -EFAULT;
1130 	} else
1131 		return -EINVAL;
1132 
1133 	return 0;
1134 }
1135 
1136 /*
1137  * ATTENTION:
1138  *This function will request pwrctrl LOCK!
1139  */
rtw_ps_deny(struct adapter * padapter,enum ps_deny_reason reason)1140 void rtw_ps_deny(struct adapter *padapter, enum ps_deny_reason reason)
1141 {
1142 	struct pwrctrl_priv *pwrpriv;
1143 
1144 	pwrpriv = adapter_to_pwrctl(padapter);
1145 
1146 	mutex_lock(&pwrpriv->lock);
1147 	pwrpriv->ps_deny |= BIT(reason);
1148 	mutex_unlock(&pwrpriv->lock);
1149 }
1150 
1151 /*
1152  * ATTENTION:
1153  *This function will request pwrctrl LOCK!
1154  */
rtw_ps_deny_cancel(struct adapter * padapter,enum ps_deny_reason reason)1155 void rtw_ps_deny_cancel(struct adapter *padapter, enum ps_deny_reason reason)
1156 {
1157 	struct pwrctrl_priv *pwrpriv;
1158 
1159 	pwrpriv = adapter_to_pwrctl(padapter);
1160 
1161 	mutex_lock(&pwrpriv->lock);
1162 	pwrpriv->ps_deny &= ~BIT(reason);
1163 	mutex_unlock(&pwrpriv->lock);
1164 }
1165 
1166 /*
1167  * ATTENTION:
1168  *Before calling this function pwrctrl lock should be occupied already,
1169  *otherwise it may return incorrect value.
1170  */
rtw_ps_deny_get(struct adapter * padapter)1171 u32 rtw_ps_deny_get(struct adapter *padapter)
1172 {
1173 	return adapter_to_pwrctl(padapter)->ps_deny;
1174 }
1175