drivers/staging/rtl8723bs/core/rtw_pwrctrl.c

   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
  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
  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
  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
  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
  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  */
 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
 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
 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  */
 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
 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
 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  */
 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 /*  */
 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 /*  */
 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
 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 /*  */
 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
 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  */
 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
 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
 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  */
 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
 698 static inline void register_task_alive(struct pwrctrl_priv *pwrctrl, u32 tag)
 699 {
 700         pwrctrl->alives |= tag;
 701 }
 702
 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  */
 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  */
 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  */
 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  */
 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  */
 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  */
 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
 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
1010 void rtw_free_pwrctrl_priv(struct adapter *adapter)
1011 {
1012 }
1013
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
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
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
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  */
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  */
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  */
1171 u32 rtw_ps_deny_get(struct adapter *padapter)
1172 {
1173         return adapter_to_pwrctl(padapter)->ps_deny;
1174 }