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0c817338 LF |
1 | /****************************************************************************** |
2 | * | |
a8d76066 | 3 | * Copyright(c) 2009-2012 Realtek Corporation. |
0c817338 LF |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
21 | * Contact Information: | |
22 | * wlanfae <wlanfae@realtek.com> | |
23 | * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park, | |
24 | * Hsinchu 300, Taiwan. | |
25 | * | |
26 | * Larry Finger <Larry.Finger@lwfinger.net> | |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
ee40fa06 | 30 | #include <linux/export.h> |
0c817338 LF |
31 | #include "wifi.h" |
32 | #include "base.h" | |
33 | #include "ps.h" | |
34 | ||
35 | bool rtl_ps_enable_nic(struct ieee80211_hw *hw) | |
36 | { | |
37 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
38 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
39 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
0c817338 LF |
40 | |
41 | /*<1> reset trx ring */ | |
42 | if (rtlhal->interface == INTF_PCI) | |
43 | rtlpriv->intf_ops->reset_trx_ring(hw); | |
44 | ||
45 | if (is_hal_stop(rtlhal)) | |
46 | RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, | |
f30d7507 | 47 | "Driver is already down!\n"); |
0c817338 LF |
48 | |
49 | /*<2> Enable Adapter */ | |
b0302aba LF |
50 | if (rtlpriv->cfg->ops->hw_init(hw)) |
51 | return 1; | |
0c817338 | 52 | RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC); |
0c817338 LF |
53 | |
54 | /*<3> Enable Interrupt */ | |
55 | rtlpriv->cfg->ops->enable_interrupt(hw); | |
56 | ||
57 | /*<enable timer> */ | |
58 | rtl_watch_dog_timer_callback((unsigned long)hw); | |
59 | ||
cc7dc0c4 | 60 | return true; |
0c817338 LF |
61 | } |
62 | EXPORT_SYMBOL(rtl_ps_enable_nic); | |
63 | ||
64 | bool rtl_ps_disable_nic(struct ieee80211_hw *hw) | |
65 | { | |
0c817338 LF |
66 | struct rtl_priv *rtlpriv = rtl_priv(hw); |
67 | ||
68 | /*<1> Stop all timer */ | |
69 | rtl_deinit_deferred_work(hw); | |
70 | ||
71 | /*<2> Disable Interrupt */ | |
72 | rtlpriv->cfg->ops->disable_interrupt(hw); | |
67fc6052 | 73 | tasklet_kill(&rtlpriv->works.irq_tasklet); |
0c817338 LF |
74 | |
75 | /*<3> Disable Adapter */ | |
76 | rtlpriv->cfg->ops->hw_disable(hw); | |
77 | ||
32473284 | 78 | return true; |
0c817338 LF |
79 | } |
80 | EXPORT_SYMBOL(rtl_ps_disable_nic); | |
81 | ||
82 | bool rtl_ps_set_rf_state(struct ieee80211_hw *hw, | |
83 | enum rf_pwrstate state_toset, | |
4b9d8d67 | 84 | u32 changesource) |
0c817338 LF |
85 | { |
86 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
87 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
7ea47240 | 88 | bool actionallowed = false; |
0c817338 | 89 | |
0c817338 LF |
90 | switch (state_toset) { |
91 | case ERFON: | |
92 | ppsc->rfoff_reason &= (~changesource); | |
93 | ||
94 | if ((changesource == RF_CHANGE_BY_HW) && | |
e10542c4 | 95 | (ppsc->hwradiooff)) { |
7ea47240 | 96 | ppsc->hwradiooff = false; |
0c817338 LF |
97 | } |
98 | ||
99 | if (!ppsc->rfoff_reason) { | |
100 | ppsc->rfoff_reason = 0; | |
7ea47240 | 101 | actionallowed = true; |
0c817338 LF |
102 | } |
103 | ||
104 | break; | |
105 | ||
106 | case ERFOFF: | |
107 | ||
23677ce3 | 108 | if ((changesource == RF_CHANGE_BY_HW) && !ppsc->hwradiooff) { |
7ea47240 | 109 | ppsc->hwradiooff = true; |
0c817338 LF |
110 | } |
111 | ||
112 | ppsc->rfoff_reason |= changesource; | |
7ea47240 | 113 | actionallowed = true; |
0c817338 LF |
114 | break; |
115 | ||
116 | case ERFSLEEP: | |
117 | ppsc->rfoff_reason |= changesource; | |
7ea47240 | 118 | actionallowed = true; |
0c817338 LF |
119 | break; |
120 | ||
121 | default: | |
122 | RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, | |
f30d7507 | 123 | "switch case not processed\n"); |
0c817338 LF |
124 | break; |
125 | } | |
126 | ||
7ea47240 | 127 | if (actionallowed) |
0c817338 LF |
128 | rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset); |
129 | ||
7ea47240 | 130 | return actionallowed; |
0c817338 LF |
131 | } |
132 | EXPORT_SYMBOL(rtl_ps_set_rf_state); | |
133 | ||
134 | static void _rtl_ps_inactive_ps(struct ieee80211_hw *hw) | |
135 | { | |
136 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
137 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
138 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
139 | ||
7ea47240 | 140 | ppsc->swrf_processing = true; |
0c817338 | 141 | |
099fb8ab | 142 | if (ppsc->inactive_pwrstate == ERFON && |
cc7dc0c4 | 143 | rtlhal->interface == INTF_PCI) { |
0c817338 | 144 | if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) && |
cc7dc0c4 | 145 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) && |
0c817338 LF |
146 | rtlhal->interface == INTF_PCI) { |
147 | rtlpriv->intf_ops->disable_aspm(hw); | |
cc7dc0c4 | 148 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
149 | } |
150 | } | |
151 | ||
4b9d8d67 | 152 | rtl_ps_set_rf_state(hw, ppsc->inactive_pwrstate, RF_CHANGE_BY_IPS); |
0c817338 LF |
153 | |
154 | if (ppsc->inactive_pwrstate == ERFOFF && | |
155 | rtlhal->interface == INTF_PCI) { | |
cc7dc0c4 C |
156 | if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && |
157 | !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
0c817338 | 158 | rtlpriv->intf_ops->enable_aspm(hw); |
cc7dc0c4 | 159 | RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
160 | } |
161 | } | |
162 | ||
7ea47240 | 163 | ppsc->swrf_processing = false; |
0c817338 LF |
164 | } |
165 | ||
166 | void rtl_ips_nic_off_wq_callback(void *data) | |
167 | { | |
168 | struct rtl_works *rtlworks = | |
169 | container_of_dwork_rtl(data, struct rtl_works, ips_nic_off_wq); | |
170 | struct ieee80211_hw *hw = rtlworks->hw; | |
171 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
172 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
173 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
174 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
175 | enum rf_pwrstate rtstate; | |
176 | ||
177 | if (mac->opmode != NL80211_IFTYPE_STATION) { | |
178 | RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, | |
f30d7507 | 179 | "not station return\n"); |
0c817338 LF |
180 | return; |
181 | } | |
182 | ||
26634c4b LF |
183 | if (mac->p2p_in_use) |
184 | return; | |
185 | ||
cc7dc0c4 C |
186 | if (mac->link_state > MAC80211_NOLINK) |
187 | return; | |
188 | ||
0c817338 LF |
189 | if (is_hal_stop(rtlhal)) |
190 | return; | |
191 | ||
192 | if (rtlpriv->sec.being_setkey) | |
193 | return; | |
194 | ||
26634c4b LF |
195 | if (rtlpriv->cfg->ops->bt_coex_off_before_lps) |
196 | rtlpriv->cfg->ops->bt_coex_off_before_lps(hw); | |
197 | ||
7ea47240 | 198 | if (ppsc->inactiveps) { |
0c817338 LF |
199 | rtstate = ppsc->rfpwr_state; |
200 | ||
201 | /* | |
202 | *Do not enter IPS in the following conditions: | |
203 | *(1) RF is already OFF or Sleep | |
7ea47240 | 204 | *(2) swrf_processing (indicates the IPS is still under going) |
0c817338 LF |
205 | *(3) Connectted (only disconnected can trigger IPS) |
206 | *(4) IBSS (send Beacon) | |
207 | *(5) AP mode (send Beacon) | |
208 | *(6) monitor mode (rcv packet) | |
209 | */ | |
210 | ||
211 | if (rtstate == ERFON && | |
7ea47240 | 212 | !ppsc->swrf_processing && |
0c817338 LF |
213 | (mac->link_state == MAC80211_NOLINK) && |
214 | !mac->act_scanning) { | |
215 | RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, | |
f30d7507 | 216 | "IPSEnter(): Turn off RF\n"); |
0c817338 LF |
217 | |
218 | ppsc->inactive_pwrstate = ERFOFF; | |
7ea47240 | 219 | ppsc->in_powersavemode = true; |
0c817338 LF |
220 | |
221 | /*rtl_pci_reset_trx_ring(hw); */ | |
222 | _rtl_ps_inactive_ps(hw); | |
223 | } | |
224 | } | |
225 | } | |
226 | ||
227 | void rtl_ips_nic_off(struct ieee80211_hw *hw) | |
228 | { | |
229 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
230 | ||
231 | /* | |
232 | *because when link with ap, mac80211 will ask us | |
233 | *to disable nic quickly after scan before linking, | |
234 | *this will cause link failed, so we delay 100ms here | |
235 | */ | |
236 | queue_delayed_work(rtlpriv->works.rtl_wq, | |
237 | &rtlpriv->works.ips_nic_off_wq, MSECS(100)); | |
238 | } | |
239 | ||
26634c4b LF |
240 | /* NOTICE: any opmode should exc nic_on, or disable without |
241 | * nic_on may something wrong, like adhoc TP | |
242 | */ | |
0c817338 LF |
243 | void rtl_ips_nic_on(struct ieee80211_hw *hw) |
244 | { | |
245 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
cc7dc0c4 | 246 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); |
0c817338 LF |
247 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); |
248 | enum rf_pwrstate rtstate; | |
b9116b9a | 249 | unsigned long flags; |
0c817338 | 250 | |
cc7dc0c4 C |
251 | if (mac->opmode != NL80211_IFTYPE_STATION) |
252 | return; | |
253 | ||
b9116b9a | 254 | spin_lock_irqsave(&rtlpriv->locks.ips_lock, flags); |
0c817338 | 255 | |
7ea47240 | 256 | if (ppsc->inactiveps) { |
0c817338 LF |
257 | rtstate = ppsc->rfpwr_state; |
258 | ||
259 | if (rtstate != ERFON && | |
7ea47240 | 260 | !ppsc->swrf_processing && |
0c817338 LF |
261 | ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) { |
262 | ||
263 | ppsc->inactive_pwrstate = ERFON; | |
7ea47240 | 264 | ppsc->in_powersavemode = false; |
0c817338 LF |
265 | |
266 | _rtl_ps_inactive_ps(hw); | |
267 | } | |
268 | } | |
269 | ||
b9116b9a | 270 | spin_unlock_irqrestore(&rtlpriv->locks.ips_lock, flags); |
0c817338 LF |
271 | } |
272 | ||
273 | /*for FW LPS*/ | |
274 | ||
275 | /* | |
276 | *Determine if we can set Fw into PS mode | |
277 | *in current condition.Return TRUE if it | |
278 | *can enter PS mode. | |
279 | */ | |
280 | static bool rtl_get_fwlps_doze(struct ieee80211_hw *hw) | |
281 | { | |
282 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
283 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
284 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
285 | u32 ps_timediff; | |
286 | ||
287 | ps_timediff = jiffies_to_msecs(jiffies - | |
288 | ppsc->last_delaylps_stamp_jiffies); | |
289 | ||
290 | if (ps_timediff < 2000) { | |
291 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 292 | "Delay enter Fw LPS for DHCP, ARP, or EAPOL exchanging state\n"); |
0c817338 LF |
293 | return false; |
294 | } | |
295 | ||
296 | if (mac->link_state != MAC80211_LINKED) | |
297 | return false; | |
298 | ||
299 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
300 | return false; | |
301 | ||
302 | return true; | |
303 | } | |
304 | ||
305 | /* Change current and default preamble mode.*/ | |
306 | static void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode) | |
307 | { | |
308 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
309 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
310 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
26634c4b | 311 | bool enter_fwlps; |
0c817338 LF |
312 | |
313 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
314 | return; | |
315 | ||
316 | if (mac->link_state != MAC80211_LINKED) | |
317 | return; | |
318 | ||
319 | if (ppsc->dot11_psmode == rt_psmode) | |
320 | return; | |
321 | ||
322 | /* Update power save mode configured. */ | |
323 | ppsc->dot11_psmode = rt_psmode; | |
324 | ||
325 | /* | |
326 | *<FW control LPS> | |
327 | *1. Enter PS mode | |
328 | * Set RPWM to Fw to turn RF off and send H2C fw_pwrmode | |
329 | * cmd to set Fw into PS mode. | |
330 | *2. Leave PS mode | |
331 | * Send H2C fw_pwrmode cmd to Fw to set Fw into Active | |
332 | * mode and set RPWM to turn RF on. | |
333 | */ | |
334 | ||
cc7dc0c4 | 335 | if ((ppsc->fwctrl_lps) && ppsc->report_linked) { |
0c817338 LF |
336 | if (ppsc->dot11_psmode == EACTIVE) { |
337 | RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG, | |
f30d7507 JP |
338 | "FW LPS leave ps_mode:%x\n", |
339 | FW_PS_ACTIVE_MODE); | |
26634c4b LF |
340 | enter_fwlps = false; |
341 | ppsc->pwr_mode = FW_PS_ACTIVE_MODE; | |
342 | ppsc->smart_ps = 0; | |
0c817338 | 343 | rtlpriv->cfg->ops->set_hw_reg(hw, |
26634c4b LF |
344 | HW_VAR_FW_LPS_ACTION, |
345 | (u8 *)(&enter_fwlps)); | |
346 | if (ppsc->p2p_ps_info.opp_ps) | |
347 | rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE); | |
0c817338 LF |
348 | |
349 | } else { | |
350 | if (rtl_get_fwlps_doze(hw)) { | |
351 | RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG, | |
f30d7507 JP |
352 | "FW LPS enter ps_mode:%x\n", |
353 | ppsc->fwctrl_psmode); | |
26634c4b LF |
354 | enter_fwlps = true; |
355 | ppsc->pwr_mode = ppsc->fwctrl_psmode; | |
356 | ppsc->smart_ps = 2; | |
0c817338 | 357 | rtlpriv->cfg->ops->set_hw_reg(hw, |
26634c4b LF |
358 | HW_VAR_FW_LPS_ACTION, |
359 | (u8 *)(&enter_fwlps)); | |
0c817338 | 360 | |
0c817338 LF |
361 | } else { |
362 | /* Reset the power save related parameters. */ | |
363 | ppsc->dot11_psmode = EACTIVE; | |
364 | } | |
365 | } | |
366 | } | |
367 | } | |
368 | ||
369 | /*Enter the leisure power save mode.*/ | |
370 | void rtl_lps_enter(struct ieee80211_hw *hw) | |
371 | { | |
372 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
373 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
374 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
0c817338 | 375 | |
cc7dc0c4 | 376 | if (!ppsc->fwctrl_lps) |
0c817338 LF |
377 | return; |
378 | ||
379 | if (rtlpriv->sec.being_setkey) | |
380 | return; | |
381 | ||
7ea47240 | 382 | if (rtlpriv->link_info.busytraffic) |
0c817338 LF |
383 | return; |
384 | ||
385 | /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */ | |
386 | if (mac->cnt_after_linked < 5) | |
387 | return; | |
388 | ||
389 | if (mac->opmode == NL80211_IFTYPE_ADHOC) | |
390 | return; | |
391 | ||
392 | if (mac->link_state != MAC80211_LINKED) | |
393 | return; | |
394 | ||
6539306b | 395 | mutex_lock(&rtlpriv->locks.ps_mutex); |
0c817338 | 396 | |
cc7dc0c4 C |
397 | /* Idle for a while if we connect to AP a while ago. */ |
398 | if (mac->cnt_after_linked >= 2) { | |
399 | if (ppsc->dot11_psmode == EACTIVE) { | |
400 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 401 | "Enter 802.11 power save mode...\n"); |
0c817338 | 402 | |
cc7dc0c4 | 403 | rtl_lps_set_psmode(hw, EAUTOPS); |
0c817338 LF |
404 | } |
405 | } | |
cc7dc0c4 | 406 | |
6539306b | 407 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
0c817338 LF |
408 | } |
409 | ||
410 | /*Leave the leisure power save mode.*/ | |
411 | void rtl_lps_leave(struct ieee80211_hw *hw) | |
412 | { | |
413 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
414 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
415 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
0c817338 | 416 | |
6539306b | 417 | mutex_lock(&rtlpriv->locks.ps_mutex); |
0c817338 | 418 | |
cc7dc0c4 | 419 | if (ppsc->fwctrl_lps) { |
0c817338 LF |
420 | if (ppsc->dot11_psmode != EACTIVE) { |
421 | ||
422 | /*FIX ME */ | |
423 | rtlpriv->cfg->ops->enable_interrupt(hw); | |
424 | ||
425 | if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM && | |
cc7dc0c4 | 426 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) && |
0c817338 LF |
427 | rtlhal->interface == INTF_PCI) { |
428 | rtlpriv->intf_ops->disable_aspm(hw); | |
cc7dc0c4 | 429 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); |
0c817338 LF |
430 | } |
431 | ||
432 | RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, | |
f30d7507 | 433 | "Busy Traffic,Leave 802.11 power save..\n"); |
0c817338 LF |
434 | |
435 | rtl_lps_set_psmode(hw, EACTIVE); | |
436 | } | |
437 | } | |
6539306b | 438 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
0c817338 | 439 | } |
cc7dc0c4 C |
440 | |
441 | /* For sw LPS*/ | |
442 | void rtl_swlps_beacon(struct ieee80211_hw *hw, void *data, unsigned int len) | |
443 | { | |
444 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
445 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
2c208890 | 446 | struct ieee80211_hdr *hdr = data; |
cc7dc0c4 C |
447 | struct ieee80211_tim_ie *tim_ie; |
448 | u8 *tim; | |
449 | u8 tim_len; | |
450 | bool u_buffed; | |
451 | bool m_buffed; | |
452 | ||
453 | if (mac->opmode != NL80211_IFTYPE_STATION) | |
454 | return; | |
455 | ||
456 | if (!rtlpriv->psc.swctrl_lps) | |
457 | return; | |
458 | ||
459 | if (rtlpriv->mac80211.link_state != MAC80211_LINKED) | |
460 | return; | |
461 | ||
462 | if (!rtlpriv->psc.sw_ps_enabled) | |
463 | return; | |
464 | ||
465 | if (rtlpriv->psc.fwctrl_lps) | |
466 | return; | |
467 | ||
468 | if (likely(!(hw->conf.flags & IEEE80211_CONF_PS))) | |
469 | return; | |
470 | ||
471 | /* check if this really is a beacon */ | |
472 | if (!ieee80211_is_beacon(hdr->frame_control)) | |
473 | return; | |
474 | ||
475 | /* min. beacon length + FCS_LEN */ | |
476 | if (len <= 40 + FCS_LEN) | |
477 | return; | |
478 | ||
479 | /* and only beacons from the associated BSSID, please */ | |
2e42e474 | 480 | if (!ether_addr_equal(hdr->addr3, rtlpriv->mac80211.bssid)) |
cc7dc0c4 C |
481 | return; |
482 | ||
483 | rtlpriv->psc.last_beacon = jiffies; | |
484 | ||
485 | tim = rtl_find_ie(data, len - FCS_LEN, WLAN_EID_TIM); | |
486 | if (!tim) | |
487 | return; | |
488 | ||
489 | if (tim[1] < sizeof(*tim_ie)) | |
490 | return; | |
491 | ||
492 | tim_len = tim[1]; | |
493 | tim_ie = (struct ieee80211_tim_ie *) &tim[2]; | |
494 | ||
495 | if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period)) | |
496 | rtlpriv->psc.dtim_counter = tim_ie->dtim_count; | |
497 | ||
498 | /* Check whenever the PHY can be turned off again. */ | |
499 | ||
500 | /* 1. What about buffered unicast traffic for our AID? */ | |
501 | u_buffed = ieee80211_check_tim(tim_ie, tim_len, | |
502 | rtlpriv->mac80211.assoc_id); | |
503 | ||
504 | /* 2. Maybe the AP wants to send multicast/broadcast data? */ | |
505 | m_buffed = tim_ie->bitmap_ctrl & 0x01; | |
506 | rtlpriv->psc.multi_buffered = m_buffed; | |
507 | ||
508 | /* unicast will process by mac80211 through | |
509 | * set ~IEEE80211_CONF_PS, So we just check | |
510 | * multicast frames here */ | |
511 | if (!m_buffed) { | |
512 | /* back to low-power land. and delay is | |
513 | * prevent null power save frame tx fail */ | |
514 | queue_delayed_work(rtlpriv->works.rtl_wq, | |
515 | &rtlpriv->works.ps_work, MSECS(5)); | |
516 | } else { | |
f30d7507 JP |
517 | RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, |
518 | "u_bufferd: %x, m_buffered: %x\n", u_buffed, m_buffed); | |
cc7dc0c4 C |
519 | } |
520 | } | |
521 | ||
522 | void rtl_swlps_rf_awake(struct ieee80211_hw *hw) | |
523 | { | |
524 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
525 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
526 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
cc7dc0c4 C |
527 | |
528 | if (!rtlpriv->psc.swctrl_lps) | |
529 | return; | |
530 | if (mac->link_state != MAC80211_LINKED) | |
531 | return; | |
532 | ||
533 | if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM && | |
534 | RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
535 | rtlpriv->intf_ops->disable_aspm(hw); | |
536 | RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); | |
537 | } | |
538 | ||
6539306b | 539 | mutex_lock(&rtlpriv->locks.ps_mutex); |
4b9d8d67 | 540 | rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS); |
6539306b | 541 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
cc7dc0c4 C |
542 | } |
543 | ||
544 | void rtl_swlps_rfon_wq_callback(void *data) | |
545 | { | |
546 | struct rtl_works *rtlworks = | |
547 | container_of_dwork_rtl(data, struct rtl_works, ps_rfon_wq); | |
548 | struct ieee80211_hw *hw = rtlworks->hw; | |
549 | ||
550 | rtl_swlps_rf_awake(hw); | |
551 | } | |
552 | ||
553 | void rtl_swlps_rf_sleep(struct ieee80211_hw *hw) | |
554 | { | |
555 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
556 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
557 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
cc7dc0c4 C |
558 | u8 sleep_intv; |
559 | ||
560 | if (!rtlpriv->psc.sw_ps_enabled) | |
561 | return; | |
562 | ||
563 | if ((rtlpriv->sec.being_setkey) || | |
564 | (mac->opmode == NL80211_IFTYPE_ADHOC)) | |
565 | return; | |
566 | ||
567 | /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */ | |
568 | if ((mac->link_state != MAC80211_LINKED) || (mac->cnt_after_linked < 5)) | |
569 | return; | |
570 | ||
571 | if (rtlpriv->link_info.busytraffic) | |
572 | return; | |
573 | ||
6539306b | 574 | mutex_lock(&rtlpriv->locks.ps_mutex); |
4b9d8d67 | 575 | rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS); |
6539306b | 576 | mutex_unlock(&rtlpriv->locks.ps_mutex); |
cc7dc0c4 C |
577 | |
578 | if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && | |
579 | !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { | |
580 | rtlpriv->intf_ops->enable_aspm(hw); | |
581 | RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); | |
582 | } | |
583 | ||
584 | /* here is power save alg, when this beacon is DTIM | |
585 | * we will set sleep time to dtim_period * n; | |
586 | * when this beacon is not DTIM, we will set sleep | |
587 | * time to sleep_intv = rtlpriv->psc.dtim_counter or | |
588 | * MAX_SW_LPS_SLEEP_INTV(default set to 5) */ | |
589 | ||
590 | if (rtlpriv->psc.dtim_counter == 0) { | |
591 | if (hw->conf.ps_dtim_period == 1) | |
592 | sleep_intv = hw->conf.ps_dtim_period * 2; | |
593 | else | |
594 | sleep_intv = hw->conf.ps_dtim_period; | |
595 | } else { | |
596 | sleep_intv = rtlpriv->psc.dtim_counter; | |
597 | } | |
598 | ||
599 | if (sleep_intv > MAX_SW_LPS_SLEEP_INTV) | |
600 | sleep_intv = MAX_SW_LPS_SLEEP_INTV; | |
601 | ||
602 | /* this print should always be dtim_conter = 0 & | |
603 | * sleep = dtim_period, that meaons, we should | |
604 | * awake before every dtim */ | |
605 | RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG, | |
f30d7507 JP |
606 | "dtim_counter:%x will sleep :%d beacon_intv\n", |
607 | rtlpriv->psc.dtim_counter, sleep_intv); | |
cc7dc0c4 C |
608 | |
609 | /* we tested that 40ms is enough for sw & hw sw delay */ | |
610 | queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_rfon_wq, | |
611 | MSECS(sleep_intv * mac->vif->bss_conf.beacon_int - 40)); | |
612 | } | |
613 | ||
614 | ||
615 | void rtl_swlps_wq_callback(void *data) | |
616 | { | |
617 | struct rtl_works *rtlworks = container_of_dwork_rtl(data, | |
618 | struct rtl_works, | |
619 | ps_work); | |
620 | struct ieee80211_hw *hw = rtlworks->hw; | |
621 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
622 | bool ps = false; | |
623 | ||
624 | ps = (hw->conf.flags & IEEE80211_CONF_PS); | |
625 | ||
626 | /* we can sleep after ps null send ok */ | |
627 | if (rtlpriv->psc.state_inap) { | |
628 | rtl_swlps_rf_sleep(hw); | |
629 | ||
630 | if (rtlpriv->psc.state && !ps) { | |
631 | rtlpriv->psc.sleep_ms = jiffies_to_msecs(jiffies - | |
632 | rtlpriv->psc.last_action); | |
633 | } | |
634 | ||
635 | if (ps) | |
636 | rtlpriv->psc.last_slept = jiffies; | |
637 | ||
638 | rtlpriv->psc.last_action = jiffies; | |
639 | rtlpriv->psc.state = ps; | |
640 | } | |
641 | } | |
26634c4b LF |
642 | |
643 | static void rtl_p2p_noa_ie(struct ieee80211_hw *hw, void *data, | |
644 | unsigned int len) | |
645 | { | |
646 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
647 | struct ieee80211_mgmt *mgmt = (void *)data; | |
648 | struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info); | |
649 | u8 *pos, *end, *ie; | |
650 | u16 noa_len; | |
651 | static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09}; | |
652 | u8 noa_num, index, i, noa_index = 0; | |
653 | bool find_p2p_ie = false , find_p2p_ps_ie = false; | |
654 | pos = (u8 *)mgmt->u.beacon.variable; | |
655 | end = data + len; | |
656 | ie = NULL; | |
657 | ||
658 | while (pos + 1 < end) { | |
659 | if (pos + 2 + pos[1] > end) | |
660 | return; | |
661 | ||
662 | if (pos[0] == 221 && pos[1] > 4) { | |
663 | if (memcmp(&pos[2], p2p_oui_ie_type, 4) == 0) { | |
664 | ie = pos + 2+4; | |
665 | break; | |
666 | } | |
667 | } | |
668 | pos += 2 + pos[1]; | |
669 | } | |
670 | ||
671 | if (ie == NULL) | |
672 | return; | |
673 | find_p2p_ie = true; | |
674 | /*to find noa ie*/ | |
675 | while (ie + 1 < end) { | |
676 | noa_len = READEF2BYTE(&ie[1]); | |
677 | if (ie + 3 + ie[1] > end) | |
678 | return; | |
679 | ||
680 | if (ie[0] == 12) { | |
681 | find_p2p_ps_ie = true; | |
682 | if ((noa_len - 2) % 13 != 0) { | |
683 | RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, | |
684 | "P2P notice of absence: invalid length.%d\n", | |
685 | noa_len); | |
686 | return; | |
687 | } else { | |
688 | noa_num = (noa_len - 2) / 13; | |
689 | } | |
690 | noa_index = ie[3]; | |
691 | if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode == | |
692 | P2P_PS_NONE || noa_index != p2pinfo->noa_index) { | |
693 | RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, | |
694 | "update NOA ie.\n"); | |
695 | p2pinfo->noa_index = noa_index; | |
696 | p2pinfo->opp_ps = (ie[4] >> 7); | |
697 | p2pinfo->ctwindow = ie[4] & 0x7F; | |
698 | p2pinfo->noa_num = noa_num; | |
699 | index = 5; | |
700 | for (i = 0; i < noa_num; i++) { | |
701 | p2pinfo->noa_count_type[i] = | |
702 | READEF1BYTE(ie+index); | |
703 | index += 1; | |
704 | p2pinfo->noa_duration[i] = | |
705 | READEF4BYTE(ie+index); | |
706 | index += 4; | |
707 | p2pinfo->noa_interval[i] = | |
708 | READEF4BYTE(ie+index); | |
709 | index += 4; | |
710 | p2pinfo->noa_start_time[i] = | |
711 | READEF4BYTE(ie+index); | |
712 | index += 4; | |
713 | } | |
714 | ||
715 | if (p2pinfo->opp_ps == 1) { | |
716 | p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW; | |
717 | /* Driver should wait LPS entering | |
718 | * CTWindow | |
719 | */ | |
720 | if (rtlpriv->psc.fw_current_inpsmode) | |
721 | rtl_p2p_ps_cmd(hw, | |
722 | P2P_PS_ENABLE); | |
723 | } else if (p2pinfo->noa_num > 0) { | |
724 | p2pinfo->p2p_ps_mode = P2P_PS_NOA; | |
725 | rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE); | |
726 | } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) { | |
727 | rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE); | |
728 | } | |
729 | } | |
730 | break; | |
731 | } | |
732 | ie += 3 + noa_len; | |
733 | } | |
734 | ||
735 | if (find_p2p_ie == true) { | |
736 | if ((p2pinfo->p2p_ps_mode > P2P_PS_NONE) && | |
737 | (find_p2p_ps_ie == false)) | |
738 | rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE); | |
739 | } | |
740 | } | |
741 | ||
742 | static void rtl_p2p_action_ie(struct ieee80211_hw *hw, void *data, | |
743 | unsigned int len) | |
744 | { | |
745 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
746 | struct ieee80211_mgmt *mgmt = (void *)data; | |
747 | struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info); | |
748 | u8 noa_num, index, i, noa_index = 0; | |
749 | u8 *pos, *end, *ie; | |
750 | u16 noa_len; | |
751 | static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09}; | |
752 | ||
753 | pos = (u8 *)&mgmt->u.action.category; | |
754 | end = data + len; | |
755 | ie = NULL; | |
756 | ||
757 | if (pos[0] == 0x7f) { | |
758 | if (memcmp(&pos[1], p2p_oui_ie_type, 4) == 0) | |
759 | ie = pos + 3+4; | |
760 | } | |
761 | ||
762 | if (ie == NULL) | |
763 | return; | |
764 | ||
765 | RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "action frame find P2P IE.\n"); | |
766 | /*to find noa ie*/ | |
767 | while (ie + 1 < end) { | |
768 | noa_len = READEF2BYTE(&ie[1]); | |
769 | if (ie + 3 + ie[1] > end) | |
770 | return; | |
771 | ||
772 | if (ie[0] == 12) { | |
773 | RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "find NOA IE.\n"); | |
774 | RT_PRINT_DATA(rtlpriv, COMP_FW, DBG_LOUD, "noa ie ", | |
775 | ie, noa_len); | |
776 | if ((noa_len - 2) % 13 != 0) { | |
777 | RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, | |
778 | "P2P notice of absence: invalid length.%d\n", | |
779 | noa_len); | |
780 | return; | |
781 | } else { | |
782 | noa_num = (noa_len - 2) / 13; | |
783 | } | |
784 | noa_index = ie[3]; | |
785 | if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode == | |
786 | P2P_PS_NONE || noa_index != p2pinfo->noa_index) { | |
787 | p2pinfo->noa_index = noa_index; | |
788 | p2pinfo->opp_ps = (ie[4] >> 7); | |
789 | p2pinfo->ctwindow = ie[4] & 0x7F; | |
790 | p2pinfo->noa_num = noa_num; | |
791 | index = 5; | |
792 | for (i = 0; i < noa_num; i++) { | |
793 | p2pinfo->noa_count_type[i] = | |
794 | READEF1BYTE(ie+index); | |
795 | index += 1; | |
796 | p2pinfo->noa_duration[i] = | |
797 | READEF4BYTE(ie+index); | |
798 | index += 4; | |
799 | p2pinfo->noa_interval[i] = | |
800 | READEF4BYTE(ie+index); | |
801 | index += 4; | |
802 | p2pinfo->noa_start_time[i] = | |
803 | READEF4BYTE(ie+index); | |
804 | index += 4; | |
805 | } | |
806 | ||
807 | if (p2pinfo->opp_ps == 1) { | |
808 | p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW; | |
809 | /* Driver should wait LPS entering | |
810 | * CTWindow | |
811 | */ | |
812 | if (rtlpriv->psc.fw_current_inpsmode) | |
813 | rtl_p2p_ps_cmd(hw, | |
814 | P2P_PS_ENABLE); | |
815 | } else if (p2pinfo->noa_num > 0) { | |
816 | p2pinfo->p2p_ps_mode = P2P_PS_NOA; | |
817 | rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE); | |
818 | } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) { | |
819 | rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE); | |
820 | } | |
821 | } | |
822 | break; | |
823 | } | |
824 | ie += 3 + noa_len; | |
825 | } | |
826 | } | |
827 | ||
828 | void rtl_p2p_ps_cmd(struct ieee80211_hw *hw, u8 p2p_ps_state) | |
829 | { | |
830 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
831 | struct rtl_ps_ctl *rtlps = rtl_psc(rtl_priv(hw)); | |
832 | struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info); | |
833 | ||
834 | RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, " p2p state %x\n", p2p_ps_state); | |
835 | switch (p2p_ps_state) { | |
836 | case P2P_PS_DISABLE: | |
837 | p2pinfo->p2p_ps_state = p2p_ps_state; | |
838 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
839 | HW_VAR_H2C_FW_P2P_PS_OFFLOAD, | |
840 | (u8 *)(&p2p_ps_state)); | |
841 | ||
842 | p2pinfo->noa_index = 0; | |
843 | p2pinfo->ctwindow = 0; | |
844 | p2pinfo->opp_ps = 0; | |
845 | p2pinfo->noa_num = 0; | |
846 | p2pinfo->p2p_ps_mode = P2P_PS_NONE; | |
847 | if (rtlps->fw_current_inpsmode == true) { | |
848 | if (rtlps->smart_ps == 0) { | |
849 | rtlps->smart_ps = 2; | |
850 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
851 | HW_VAR_H2C_FW_PWRMODE, | |
852 | (u8 *)(&rtlps->pwr_mode)); | |
853 | } | |
854 | } | |
855 | break; | |
856 | case P2P_PS_ENABLE: | |
857 | if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) { | |
858 | p2pinfo->p2p_ps_state = p2p_ps_state; | |
859 | ||
860 | if (p2pinfo->ctwindow > 0) { | |
861 | if (rtlps->smart_ps != 0) { | |
862 | rtlps->smart_ps = 0; | |
863 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
864 | HW_VAR_H2C_FW_PWRMODE, | |
865 | (u8 *)(&rtlps->pwr_mode)); | |
866 | } | |
867 | } | |
868 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
869 | HW_VAR_H2C_FW_P2P_PS_OFFLOAD, | |
870 | (u8 *)(&p2p_ps_state)); | |
871 | } | |
872 | break; | |
873 | case P2P_PS_SCAN: | |
874 | case P2P_PS_SCAN_DONE: | |
875 | case P2P_PS_ALLSTASLEEP: | |
876 | if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) { | |
877 | p2pinfo->p2p_ps_state = p2p_ps_state; | |
878 | rtlpriv->cfg->ops->set_hw_reg(hw, | |
879 | HW_VAR_H2C_FW_P2P_PS_OFFLOAD, | |
880 | (u8 *)(&p2p_ps_state)); | |
881 | } | |
882 | break; | |
883 | default: | |
884 | break; | |
885 | } | |
886 | RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, | |
887 | "ctwindow %x oppps %x\n", p2pinfo->ctwindow, p2pinfo->opp_ps); | |
888 | RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, | |
889 | "count %x duration %x index %x interval %x start time %x noa num %x\n", | |
890 | p2pinfo->noa_count_type[0], p2pinfo->noa_duration[0], | |
891 | p2pinfo->noa_index, p2pinfo->noa_interval[0], | |
892 | p2pinfo->noa_start_time[0], p2pinfo->noa_num); | |
893 | RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "end\n"); | |
894 | } | |
895 | ||
896 | void rtl_p2p_info(struct ieee80211_hw *hw, void *data, unsigned int len) | |
897 | { | |
898 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
899 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
900 | struct ieee80211_hdr *hdr = (void *)data; | |
901 | ||
902 | if (!mac->p2p) | |
903 | return; | |
904 | if (mac->link_state != MAC80211_LINKED) | |
905 | return; | |
906 | /* min. beacon length + FCS_LEN */ | |
907 | if (len <= 40 + FCS_LEN) | |
908 | return; | |
909 | ||
910 | /* and only beacons from the associated BSSID, please */ | |
911 | if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid)) | |
912 | return; | |
913 | ||
914 | /* check if this really is a beacon */ | |
915 | if (!(ieee80211_is_beacon(hdr->frame_control) || | |
916 | ieee80211_is_probe_resp(hdr->frame_control) || | |
917 | ieee80211_is_action(hdr->frame_control))) | |
918 | return; | |
919 | ||
920 | if (ieee80211_is_action(hdr->frame_control)) | |
921 | rtl_p2p_action_ie(hw, data, len - FCS_LEN); | |
922 | else | |
923 | rtl_p2p_noa_ie(hw, data, len - FCS_LEN); | |
924 | } |