1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2007 - 2012 Realtek Corporation. */
3
4 #define _RTW_PWRCTRL_C_
5
6 #include "../include/osdep_service.h"
7 #include "../include/drv_types.h"
8 #include "../include/osdep_intf.h"
9 #include "../include/linux/usb.h"
10
ips_enter(struct adapter * padapter)11 void ips_enter(struct adapter *padapter)
12 {
13 struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
14 struct xmit_priv *pxmit_priv = &padapter->xmitpriv;
15
16 if (pxmit_priv->free_xmitbuf_cnt != NR_XMITBUFF ||
17 pxmit_priv->free_xmit_extbuf_cnt != NR_XMIT_EXTBUFF)
18 return;
19
20 mutex_lock(&pwrpriv->lock);
21
22 pwrpriv->bips_processing = true;
23
24 /* syn ips_mode with request */
25 pwrpriv->ips_mode = pwrpriv->ips_mode_req;
26
27 pwrpriv->ips_enter_cnts++;
28 if (rf_off == pwrpriv->change_rfpwrstate) {
29 pwrpriv->bpower_saving = true;
30
31 if (pwrpriv->ips_mode == IPS_LEVEL_2)
32 pwrpriv->bkeepfwalive = true;
33
34 rtw_ips_pwr_down(padapter);
35 pwrpriv->rf_pwrstate = rf_off;
36 }
37 pwrpriv->bips_processing = false;
38
39 mutex_unlock(&pwrpriv->lock);
40 }
41
ips_leave(struct adapter * padapter)42 int ips_leave(struct adapter *padapter)
43 {
44 struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
45 struct security_priv *psecuritypriv = &padapter->securitypriv;
46 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
47 int result = _SUCCESS;
48 int keyid;
49
50 mutex_lock(&pwrpriv->lock);
51
52 if ((pwrpriv->rf_pwrstate == rf_off) && (!pwrpriv->bips_processing)) {
53 pwrpriv->bips_processing = true;
54 pwrpriv->change_rfpwrstate = rf_on;
55 pwrpriv->ips_leave_cnts++;
56
57 result = rtw_ips_pwr_up(padapter);
58 if (result == _SUCCESS) {
59 pwrpriv->rf_pwrstate = rf_on;
60 }
61
62 if ((psecuritypriv->dot11PrivacyAlgrthm == _WEP40_) || (psecuritypriv->dot11PrivacyAlgrthm == _WEP104_)) {
63 set_channel_bwmode(padapter, padapter->mlmeextpriv.cur_channel, HAL_PRIME_CHNL_OFFSET_DONT_CARE, HT_CHANNEL_WIDTH_20);
64 for (keyid = 0; keyid < 4; keyid++) {
65 if (pmlmepriv->key_mask & BIT(keyid)) {
66 if (keyid == psecuritypriv->dot11PrivacyKeyIndex)
67 result = rtw_set_key(padapter, psecuritypriv, keyid, 1);
68 else
69 result = rtw_set_key(padapter, psecuritypriv, keyid, 0);
70 }
71 }
72 }
73
74 pwrpriv->bips_processing = false;
75
76 pwrpriv->bkeepfwalive = false;
77 pwrpriv->bpower_saving = false;
78 }
79
80 mutex_unlock(&pwrpriv->lock);
81
82 return result;
83 }
84
rtw_pwr_unassociated_idle(struct adapter * adapter)85 static bool rtw_pwr_unassociated_idle(struct adapter *adapter)
86 {
87 struct adapter *buddy = adapter->pbuddy_adapter;
88 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
89 struct wifidirect_info *pwdinfo = &adapter->wdinfo;
90 bool ret = false;
91
92 if (time_after_eq(adapter->pwrctrlpriv.ips_deny_time, jiffies))
93 goto exit;
94
95 if (check_fwstate(pmlmepriv, WIFI_ASOC_STATE | WIFI_SITE_MONITOR) ||
96 check_fwstate(pmlmepriv, WIFI_UNDER_LINKING | WIFI_UNDER_WPS) ||
97 check_fwstate(pmlmepriv, WIFI_UNDER_WPS) ||
98 check_fwstate(pmlmepriv, WIFI_AP_STATE) ||
99 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE | WIFI_ADHOC_STATE) ||
100 !rtw_p2p_chk_state(pwdinfo, P2P_STATE_NONE))
101 goto exit;
102
103 /* consider buddy, if exist */
104 if (buddy) {
105 struct mlme_priv *b_pmlmepriv = &buddy->mlmepriv;
106 struct wifidirect_info *b_pwdinfo = &buddy->wdinfo;
107
108 if (check_fwstate(b_pmlmepriv, WIFI_ASOC_STATE | WIFI_SITE_MONITOR) ||
109 check_fwstate(b_pmlmepriv, WIFI_UNDER_LINKING | WIFI_UNDER_WPS) ||
110 check_fwstate(b_pmlmepriv, WIFI_AP_STATE) ||
111 check_fwstate(b_pmlmepriv, WIFI_ADHOC_MASTER_STATE | WIFI_ADHOC_STATE) ||
112 !rtw_p2p_chk_state(b_pwdinfo, P2P_STATE_NONE))
113 goto exit;
114 }
115 ret = true;
116
117 exit:
118 return ret;
119 }
120
rtw_ps_processor(struct adapter * padapter)121 void rtw_ps_processor(struct adapter *padapter)
122 {
123 struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
124
125 pwrpriv->ps_processing = true;
126
127 if (pwrpriv->bips_processing)
128 goto exit;
129
130 if (pwrpriv->ips_mode_req == IPS_NONE)
131 goto exit;
132
133 if (!rtw_pwr_unassociated_idle(padapter))
134 goto exit;
135
136 if (pwrpriv->rf_pwrstate == rf_on) {
137 pwrpriv->change_rfpwrstate = rf_off;
138 ips_enter(padapter);
139 }
140 exit:
141 rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);
142 pwrpriv->ps_processing = false;
143 }
144
pwr_state_check_handler(struct timer_list * t)145 static void pwr_state_check_handler(struct timer_list *t)
146 {
147 struct adapter *padapter =
148 from_timer(padapter, t,
149 pwrctrlpriv.pwr_state_check_timer);
150 rtw_ps_cmd(padapter);
151 }
152
PS_RDY_CHECK(struct adapter * padapter)153 static bool PS_RDY_CHECK(struct adapter *padapter)
154 {
155 u32 curr_time, delta_time;
156 struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
157 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
158
159 curr_time = jiffies;
160 delta_time = curr_time - pwrpriv->DelayLPSLastTimeStamp;
161
162 if (delta_time < LPS_DELAY_TIME)
163 return false;
164
165 if (!check_fwstate(pmlmepriv, _FW_LINKED) ||
166 check_fwstate(pmlmepriv, _FW_UNDER_SURVEY) ||
167 check_fwstate(pmlmepriv, WIFI_AP_STATE) ||
168 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) ||
169 check_fwstate(pmlmepriv, WIFI_ADHOC_STATE))
170 return false;
171 if (pwrpriv->bInSuspend)
172 return false;
173 if (padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X &&
174 !padapter->securitypriv.binstallGrpkey)
175 return false;
176 return true;
177 }
178
rtw_set_firmware_ps_mode(struct adapter * adapter,u8 mode)179 void rtw_set_firmware_ps_mode(struct adapter *adapter, u8 mode)
180 {
181 struct hal_data_8188e *haldata = &adapter->haldata;
182 struct odm_dm_struct *odmpriv = &haldata->odmpriv;
183
184 /* Force leave RF low power mode for 1T1R to prevent
185 * conflicting setting in firmware power saving sequence.
186 */
187 if (mode != PS_MODE_ACTIVE)
188 ODM_RF_Saving(odmpriv, true);
189 rtl8188e_set_FwPwrMode_cmd(adapter, mode);
190 }
191
rtw_set_ps_mode(struct adapter * padapter,u8 ps_mode,u8 smart_ps,u8 bcn_ant_mode)192 void rtw_set_ps_mode(struct adapter *padapter, u8 ps_mode, u8 smart_ps, u8 bcn_ant_mode)
193 {
194 struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
195 struct wifidirect_info *pwdinfo = &padapter->wdinfo;
196
197 if (ps_mode > PM_Card_Disable)
198 return;
199
200 if (pwrpriv->pwr_mode == ps_mode) {
201 if (ps_mode == PS_MODE_ACTIVE)
202 return;
203
204 if ((pwrpriv->smart_ps == smart_ps) &&
205 (pwrpriv->bcn_ant_mode == bcn_ant_mode))
206 return;
207 }
208
209 if (ps_mode == PS_MODE_ACTIVE) {
210 if (pwdinfo->opp_ps == 0) {
211 pwrpriv->pwr_mode = ps_mode;
212 rtw_set_firmware_ps_mode(padapter, ps_mode);
213 pwrpriv->bFwCurrentInPSMode = false;
214 }
215 } else {
216 if (PS_RDY_CHECK(padapter)) {
217 pwrpriv->bFwCurrentInPSMode = true;
218 pwrpriv->pwr_mode = ps_mode;
219 pwrpriv->smart_ps = smart_ps;
220 pwrpriv->bcn_ant_mode = bcn_ant_mode;
221 rtw_set_firmware_ps_mode(padapter, ps_mode);
222
223 /* Set CTWindow after LPS */
224 if (pwdinfo->opp_ps == 1)
225 p2p_ps_wk_cmd(padapter, P2P_PS_ENABLE, 0);
226 }
227 }
228 }
229
lps_rf_on(struct adapter * adapter)230 static bool lps_rf_on(struct adapter *adapter)
231 {
232 int res;
233 u32 reg;
234
235 /* When we halt NIC, we should check if FW LPS is leave. */
236 if (adapter->pwrctrlpriv.rf_pwrstate == rf_off) {
237 /* If it is in HW/SW Radio OFF or IPS state, we do not check Fw LPS Leave, */
238 /* because Fw is unload. */
239 return true;
240 }
241
242 res = rtw_read32(adapter, REG_RCR, ®);
243 if (res)
244 return false;
245
246 if (reg & 0x00070000)
247 return false;
248
249 return true;
250 }
251
252 /*
253 * Return:
254 * 0: Leave OK
255 * -1: Timeout
256 * -2: Other error
257 */
LPS_RF_ON_check(struct adapter * padapter,u32 delay_ms)258 static s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
259 {
260 unsigned long timeout = jiffies + msecs_to_jiffies(delay_ms);
261 s32 err = 0;
262
263 while (1) {
264 if (lps_rf_on(padapter))
265 break;
266
267 if (padapter->bSurpriseRemoved) {
268 err = -2;
269 break;
270 }
271
272 if (time_after(jiffies, timeout)) {
273 err = -1;
274 break;
275 }
276 mdelay(1);
277 }
278
279 return err;
280 }
281
282 /* */
283 /* Description: */
284 /* Enter the leisure power save mode. */
285 /* */
LPS_Enter(struct adapter * padapter)286 void LPS_Enter(struct adapter *padapter)
287 {
288 struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
289
290 if (!PS_RDY_CHECK(padapter))
291 return;
292
293 if (pwrpriv->bLeisurePs) {
294 /* Idle for a while if we connect to AP a while ago. */
295 if (pwrpriv->LpsIdleCount >= 2) { /* 4 Sec */
296 if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) {
297 pwrpriv->bpower_saving = true;
298 /* For Tenda W311R IOT issue */
299 rtw_set_ps_mode(padapter, pwrpriv->power_mgnt,
300 pwrpriv->smart_ps, 0x40);
301 }
302 } else {
303 pwrpriv->LpsIdleCount++;
304 }
305 }
306
307 }
308
309 #define LPS_LEAVE_TIMEOUT_MS 100
310
311 /* Description: */
312 /* Leave the leisure power save mode. */
LPS_Leave(struct adapter * padapter)313 void LPS_Leave(struct adapter *padapter)
314 {
315 struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
316
317 if (pwrpriv->bLeisurePs) {
318 if (pwrpriv->pwr_mode != PS_MODE_ACTIVE) {
319 rtw_set_ps_mode(padapter, PS_MODE_ACTIVE, 0, 0x40);
320
321 if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
322 LPS_RF_ON_check(padapter, LPS_LEAVE_TIMEOUT_MS);
323 }
324 }
325
326 pwrpriv->bpower_saving = false;
327
328 }
329
330 /* */
331 /* Description: Leave all power save mode: LPS, FwLPS, IPS if needed. */
332 /* Move code to function by tynli. 2010.03.26. */
333 /* */
LeaveAllPowerSaveMode(struct adapter * Adapter)334 void LeaveAllPowerSaveMode(struct adapter *Adapter)
335 {
336 struct mlme_priv *pmlmepriv = &Adapter->mlmepriv;
337 u8 enqueue = 0;
338
339 if (check_fwstate(pmlmepriv, _FW_LINKED)) { /* connect */
340 p2p_ps_wk_cmd(Adapter, P2P_PS_DISABLE, enqueue);
341
342 rtw_lps_ctrl_wk_cmd(Adapter, LPS_CTRL_LEAVE, enqueue);
343 }
344
345 }
346
rtw_init_pwrctrl_priv(struct adapter * padapter)347 void rtw_init_pwrctrl_priv(struct adapter *padapter)
348 {
349 struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
350
351 mutex_init(&pwrctrlpriv->lock);
352 pwrctrlpriv->rf_pwrstate = rf_on;
353 pwrctrlpriv->ips_enter_cnts = 0;
354 pwrctrlpriv->ips_leave_cnts = 0;
355 pwrctrlpriv->bips_processing = false;
356
357 pwrctrlpriv->ips_mode = padapter->registrypriv.ips_mode;
358 pwrctrlpriv->ips_mode_req = padapter->registrypriv.ips_mode;
359
360 pwrctrlpriv->pwr_state_check_interval = RTW_PWR_STATE_CHK_INTERVAL;
361 pwrctrlpriv->bInSuspend = false;
362 pwrctrlpriv->bkeepfwalive = false;
363
364 pwrctrlpriv->LpsIdleCount = 0;
365 pwrctrlpriv->power_mgnt = padapter->registrypriv.power_mgnt;/* PS_MODE_MIN; */
366 pwrctrlpriv->bLeisurePs = pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE;
367
368 pwrctrlpriv->bFwCurrentInPSMode = false;
369
370 pwrctrlpriv->pwr_mode = PS_MODE_ACTIVE;
371 pwrctrlpriv->smart_ps = padapter->registrypriv.smart_ps;
372 pwrctrlpriv->bcn_ant_mode = 0;
373
374 timer_setup(&pwrctrlpriv->pwr_state_check_timer, pwr_state_check_handler, 0);
375 }
376
377 /* Wake the NIC up from: 1)IPS 2)USB autosuspend */
rtw_pwr_wakeup(struct adapter * padapter)378 int rtw_pwr_wakeup(struct adapter *padapter)
379 {
380 struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
381 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
382 unsigned long timeout = jiffies + msecs_to_jiffies(3000);
383 unsigned long deny_time;
384 int ret;
385
386 while (pwrpriv->ps_processing && time_before(jiffies, timeout))
387 msleep(10);
388
389 /* I think this should be check in IPS, LPS, autosuspend functions... */
390 /* Below goto is a success path taken for already linked devices */
391 ret = 0;
392 if (check_fwstate(pmlmepriv, _FW_LINKED))
393 goto exit;
394
395 if (pwrpriv->rf_pwrstate == rf_off && ips_leave(padapter) == _FAIL) {
396 ret = -ENOMEM;
397 goto exit;
398 }
399
400 if (padapter->bDriverStopped || !padapter->bup || !padapter->hw_init_completed) {
401 ret = -EBUSY;
402 goto exit;
403 }
404
405 exit:
406 deny_time = jiffies + msecs_to_jiffies(RTW_PWR_STATE_CHK_INTERVAL);
407 if (time_before(pwrpriv->ips_deny_time, deny_time))
408 pwrpriv->ips_deny_time = deny_time;
409 return ret;
410 }
411
rtw_pm_set_lps(struct adapter * padapter,u8 mode)412 int rtw_pm_set_lps(struct adapter *padapter, u8 mode)
413 {
414 int ret = 0;
415 struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
416
417 if (mode < PS_MODE_NUM) {
418 if (pwrctrlpriv->power_mgnt != mode) {
419 if (mode == PS_MODE_ACTIVE)
420 LeaveAllPowerSaveMode(padapter);
421 else
422 pwrctrlpriv->LpsIdleCount = 2;
423 pwrctrlpriv->power_mgnt = mode;
424 pwrctrlpriv->bLeisurePs = pwrctrlpriv->power_mgnt != PS_MODE_ACTIVE;
425 }
426 } else {
427 ret = -EINVAL;
428 }
429
430 return ret;
431 }
432
rtw_pm_set_ips(struct adapter * padapter,u8 mode)433 int rtw_pm_set_ips(struct adapter *padapter, u8 mode)
434 {
435 struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
436
437 if (mode == IPS_NORMAL || mode == IPS_LEVEL_2) {
438 rtw_ips_mode_req(pwrctrlpriv, mode);
439 return 0;
440 } else if (mode == IPS_NONE) {
441 rtw_ips_mode_req(pwrctrlpriv, mode);
442 if ((padapter->bSurpriseRemoved == 0) && rtw_pwr_wakeup(padapter))
443 return -EFAULT;
444 } else {
445 return -EINVAL;
446 }
447 return 0;
448 }
449