rtlwifi: use work for lps
[linux-2.6.git] / drivers / net / wireless / rtlwifi / base.c
1 /******************************************************************************
2  *
3  * Copyright(c) 2009-2010  Realtek Corporation.
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
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/ip.h>
33 #include <linux/module.h>
34 #include "wifi.h"
35 #include "rc.h"
36 #include "base.h"
37 #include "efuse.h"
38 #include "cam.h"
39 #include "ps.h"
40 #include "regd.h"
41
42 /*
43  *NOTICE!!!: This file will be very big, we hsould
44  *keep it clear under follwing roles:
45  *
46  *This file include follwing part, so, if you add new
47  *functions into this file, please check which part it
48  *should includes. or check if you should add new part
49  *for this file:
50  *
51  *1) mac80211 init functions
52  *2) tx information functions
53  *3) functions called by core.c
54  *4) wq & timer callback functions
55  *5) frame process functions
56  *6) IOT functions
57  *7) sysfs functions
58  *8) ...
59  */
60
61 /*********************************************************
62  *
63  * mac80211 init functions
64  *
65  *********************************************************/
66 static struct ieee80211_channel rtl_channeltable_2g[] = {
67         {.center_freq = 2412, .hw_value = 1,},
68         {.center_freq = 2417, .hw_value = 2,},
69         {.center_freq = 2422, .hw_value = 3,},
70         {.center_freq = 2427, .hw_value = 4,},
71         {.center_freq = 2432, .hw_value = 5,},
72         {.center_freq = 2437, .hw_value = 6,},
73         {.center_freq = 2442, .hw_value = 7,},
74         {.center_freq = 2447, .hw_value = 8,},
75         {.center_freq = 2452, .hw_value = 9,},
76         {.center_freq = 2457, .hw_value = 10,},
77         {.center_freq = 2462, .hw_value = 11,},
78         {.center_freq = 2467, .hw_value = 12,},
79         {.center_freq = 2472, .hw_value = 13,},
80         {.center_freq = 2484, .hw_value = 14,},
81 };
82
83 static struct ieee80211_channel rtl_channeltable_5g[] = {
84         {.center_freq = 5180, .hw_value = 36,},
85         {.center_freq = 5200, .hw_value = 40,},
86         {.center_freq = 5220, .hw_value = 44,},
87         {.center_freq = 5240, .hw_value = 48,},
88         {.center_freq = 5260, .hw_value = 52,},
89         {.center_freq = 5280, .hw_value = 56,},
90         {.center_freq = 5300, .hw_value = 60,},
91         {.center_freq = 5320, .hw_value = 64,},
92         {.center_freq = 5500, .hw_value = 100,},
93         {.center_freq = 5520, .hw_value = 104,},
94         {.center_freq = 5540, .hw_value = 108,},
95         {.center_freq = 5560, .hw_value = 112,},
96         {.center_freq = 5580, .hw_value = 116,},
97         {.center_freq = 5600, .hw_value = 120,},
98         {.center_freq = 5620, .hw_value = 124,},
99         {.center_freq = 5640, .hw_value = 128,},
100         {.center_freq = 5660, .hw_value = 132,},
101         {.center_freq = 5680, .hw_value = 136,},
102         {.center_freq = 5700, .hw_value = 140,},
103         {.center_freq = 5745, .hw_value = 149,},
104         {.center_freq = 5765, .hw_value = 153,},
105         {.center_freq = 5785, .hw_value = 157,},
106         {.center_freq = 5805, .hw_value = 161,},
107         {.center_freq = 5825, .hw_value = 165,},
108 };
109
110 static struct ieee80211_rate rtl_ratetable_2g[] = {
111         {.bitrate = 10, .hw_value = 0x00,},
112         {.bitrate = 20, .hw_value = 0x01,},
113         {.bitrate = 55, .hw_value = 0x02,},
114         {.bitrate = 110, .hw_value = 0x03,},
115         {.bitrate = 60, .hw_value = 0x04,},
116         {.bitrate = 90, .hw_value = 0x05,},
117         {.bitrate = 120, .hw_value = 0x06,},
118         {.bitrate = 180, .hw_value = 0x07,},
119         {.bitrate = 240, .hw_value = 0x08,},
120         {.bitrate = 360, .hw_value = 0x09,},
121         {.bitrate = 480, .hw_value = 0x0a,},
122         {.bitrate = 540, .hw_value = 0x0b,},
123 };
124
125 static struct ieee80211_rate rtl_ratetable_5g[] = {
126         {.bitrate = 60, .hw_value = 0x04,},
127         {.bitrate = 90, .hw_value = 0x05,},
128         {.bitrate = 120, .hw_value = 0x06,},
129         {.bitrate = 180, .hw_value = 0x07,},
130         {.bitrate = 240, .hw_value = 0x08,},
131         {.bitrate = 360, .hw_value = 0x09,},
132         {.bitrate = 480, .hw_value = 0x0a,},
133         {.bitrate = 540, .hw_value = 0x0b,},
134 };
135
136 static const struct ieee80211_supported_band rtl_band_2ghz = {
137         .band = IEEE80211_BAND_2GHZ,
138
139         .channels = rtl_channeltable_2g,
140         .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
141
142         .bitrates = rtl_ratetable_2g,
143         .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
144
145         .ht_cap = {0},
146 };
147
148 static struct ieee80211_supported_band rtl_band_5ghz = {
149         .band = IEEE80211_BAND_5GHZ,
150
151         .channels = rtl_channeltable_5g,
152         .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
153
154         .bitrates = rtl_ratetable_5g,
155         .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
156
157         .ht_cap = {0},
158 };
159
160 static const u8 tid_to_ac[] = {
161         2, /* IEEE80211_AC_BE */
162         3, /* IEEE80211_AC_BK */
163         3, /* IEEE80211_AC_BK */
164         2, /* IEEE80211_AC_BE */
165         1, /* IEEE80211_AC_VI */
166         1, /* IEEE80211_AC_VI */
167         0, /* IEEE80211_AC_VO */
168         0, /* IEEE80211_AC_VO */
169 };
170
171 u8 rtl_tid_to_ac(struct ieee80211_hw *hw, u8 tid)
172 {
173         return tid_to_ac[tid];
174 }
175
176 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
177                                   struct ieee80211_sta_ht_cap *ht_cap)
178 {
179         struct rtl_priv *rtlpriv = rtl_priv(hw);
180         struct rtl_phy *rtlphy = &(rtlpriv->phy);
181
182         ht_cap->ht_supported = true;
183         ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
184             IEEE80211_HT_CAP_SGI_40 |
185             IEEE80211_HT_CAP_SGI_20 |
186             IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
187
188         if (rtlpriv->rtlhal.disable_amsdu_8k)
189                 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
190
191         /*
192          *Maximum length of AMPDU that the STA can receive.
193          *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
194          */
195         ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
196
197         /*Minimum MPDU start spacing , */
198         ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
199
200         ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
201
202         /*
203          *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
204          *base on ant_num
205          *rx_mask: RX mask
206          *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
207          *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
208          *if rx_ant >=3 rx_mask[2]=0xff;
209          *if BW_40 rx_mask[4]=0x01;
210          *highest supported RX rate
211          */
212         if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
213
214                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T2R or 2T2R\n"));
215
216                 ht_cap->mcs.rx_mask[0] = 0xFF;
217                 ht_cap->mcs.rx_mask[1] = 0xFF;
218                 ht_cap->mcs.rx_mask[4] = 0x01;
219
220                 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
221         } else if (get_rf_type(rtlphy) == RF_1T1R) {
222
223                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T1R\n"));
224
225                 ht_cap->mcs.rx_mask[0] = 0xFF;
226                 ht_cap->mcs.rx_mask[1] = 0x00;
227                 ht_cap->mcs.rx_mask[4] = 0x01;
228
229                 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
230         }
231 }
232
233 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
234 {
235         struct rtl_priv *rtlpriv = rtl_priv(hw);
236         struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
237         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
238         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
239         struct ieee80211_supported_band *sband;
240
241
242         if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
243             BAND_ON_BOTH) {
244                 /* 1: 2.4 G bands */
245                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
246                 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
247
248                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
249                  * to default value(1T1R) */
250                 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
251                                 sizeof(struct ieee80211_supported_band));
252
253                 /* <3> init ht cap base on ant_num */
254                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
255
256                 /* <4> set mac->sband to wiphy->sband */
257                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
258
259                 /* 2: 5 G bands */
260                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
261                 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
262
263                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
264                  * to default value(1T1R) */
265                 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
266                                 sizeof(struct ieee80211_supported_band));
267
268                 /* <3> init ht cap base on ant_num */
269                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
270
271                 /* <4> set mac->sband to wiphy->sband */
272                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
273         } else {
274                 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
275                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
276                         sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
277
278                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
279                          * to default value(1T1R) */
280                         memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
281                                  &rtl_band_2ghz,
282                                  sizeof(struct ieee80211_supported_band));
283
284                         /* <3> init ht cap base on ant_num */
285                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
286
287                         /* <4> set mac->sband to wiphy->sband */
288                         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
289                 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
290                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
291                         sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
292
293                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
294                          * to default value(1T1R) */
295                         memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
296                                  &rtl_band_5ghz,
297                                  sizeof(struct ieee80211_supported_band));
298
299                         /* <3> init ht cap base on ant_num */
300                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
301
302                         /* <4> set mac->sband to wiphy->sband */
303                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
304                 } else {
305                         RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
306                                  ("Err BAND %d\n",
307                                  rtlhal->current_bandtype));
308                 }
309         }
310         /* <5> set hw caps */
311         hw->flags = IEEE80211_HW_SIGNAL_DBM |
312             IEEE80211_HW_RX_INCLUDES_FCS |
313             IEEE80211_HW_BEACON_FILTER |
314             IEEE80211_HW_AMPDU_AGGREGATION |
315             IEEE80211_HW_CONNECTION_MONITOR |
316             /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
317             IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
318
319         /* swlps or hwlps has been set in diff chip in init_sw_vars */
320         if (rtlpriv->psc.swctrl_lps)
321                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
322                         IEEE80211_HW_PS_NULLFUNC_STACK |
323                         /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
324                         0;
325
326         hw->wiphy->interface_modes =
327             BIT(NL80211_IFTYPE_AP) |
328             BIT(NL80211_IFTYPE_STATION) |
329             BIT(NL80211_IFTYPE_ADHOC);
330
331         hw->wiphy->rts_threshold = 2347;
332
333         hw->queues = AC_MAX;
334         hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
335
336         /* TODO: Correct this value for our hw */
337         /* TODO: define these hard code value */
338         hw->channel_change_time = 100;
339         hw->max_listen_interval = 10;
340         hw->max_rate_tries = 4;
341         /* hw->max_rates = 1; */
342         hw->sta_data_size = sizeof(struct rtl_sta_info);
343
344         /* <6> mac address */
345         if (is_valid_ether_addr(rtlefuse->dev_addr)) {
346                 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
347         } else {
348                 u8 rtlmac1[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
349                 get_random_bytes((rtlmac1 + (ETH_ALEN - 1)), 1);
350                 SET_IEEE80211_PERM_ADDR(hw, rtlmac1);
351         }
352
353 }
354
355 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
356 {
357         struct rtl_priv *rtlpriv = rtl_priv(hw);
358
359         /* <1> timer */
360         init_timer(&rtlpriv->works.watchdog_timer);
361         setup_timer(&rtlpriv->works.watchdog_timer,
362                     rtl_watch_dog_timer_callback, (unsigned long)hw);
363
364         /* <2> work queue */
365         rtlpriv->works.hw = hw;
366         rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
367         INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
368                           (void *)rtl_watchdog_wq_callback);
369         INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
370                           (void *)rtl_ips_nic_off_wq_callback);
371         INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
372                           (void *)rtl_swlps_wq_callback);
373         INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
374                           (void *)rtl_swlps_rfon_wq_callback);
375
376 }
377
378 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
379 {
380         struct rtl_priv *rtlpriv = rtl_priv(hw);
381
382         del_timer_sync(&rtlpriv->works.watchdog_timer);
383
384         cancel_delayed_work(&rtlpriv->works.watchdog_wq);
385         cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
386         cancel_delayed_work(&rtlpriv->works.ps_work);
387         cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
388 }
389
390 void rtl_init_rfkill(struct ieee80211_hw *hw)
391 {
392         struct rtl_priv *rtlpriv = rtl_priv(hw);
393
394         bool radio_state;
395         bool blocked;
396         u8 valid = 0;
397
398         /*set init state to on */
399         rtlpriv->rfkill.rfkill_state = 1;
400         wiphy_rfkill_set_hw_state(hw->wiphy, 0);
401
402         radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
403
404         if (valid) {
405                 pr_info("wireless switch is %s\n",
406                         rtlpriv->rfkill.rfkill_state ? "on" : "off");
407
408                 rtlpriv->rfkill.rfkill_state = radio_state;
409
410                 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
411                 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
412         }
413
414         wiphy_rfkill_start_polling(hw->wiphy);
415 }
416
417 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
418 {
419         wiphy_rfkill_stop_polling(hw->wiphy);
420 }
421
422 int rtl_init_core(struct ieee80211_hw *hw)
423 {
424         struct rtl_priv *rtlpriv = rtl_priv(hw);
425         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
426
427         /* <1> init mac80211 */
428         _rtl_init_mac80211(hw);
429         rtlmac->hw = hw;
430
431         /* <2> rate control register */
432         hw->rate_control_algorithm = "rtl_rc";
433
434         /*
435          * <3> init CRDA must come after init
436          * mac80211 hw  in _rtl_init_mac80211.
437          */
438         if (rtl_regd_init(hw, rtl_reg_notifier)) {
439                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n"));
440                 return 1;
441         } else {
442                 /* CRDA regd hint must after init CRDA */
443                 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
444                         RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
445                                  ("regulatory_hint fail\n"));
446                 }
447         }
448
449         /* <4> locks */
450         mutex_init(&rtlpriv->locks.conf_mutex);
451         spin_lock_init(&rtlpriv->locks.ips_lock);
452         spin_lock_init(&rtlpriv->locks.irq_th_lock);
453         spin_lock_init(&rtlpriv->locks.h2c_lock);
454         spin_lock_init(&rtlpriv->locks.rf_ps_lock);
455         spin_lock_init(&rtlpriv->locks.rf_lock);
456         spin_lock_init(&rtlpriv->locks.lps_lock);
457         spin_lock_init(&rtlpriv->locks.waitq_lock);
458         spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
459
460         rtlmac->link_state = MAC80211_NOLINK;
461
462         /* <5> init deferred work */
463         _rtl_init_deferred_work(hw);
464
465         return 0;
466 }
467
468 void rtl_deinit_core(struct ieee80211_hw *hw)
469 {
470 }
471
472 void rtl_init_rx_config(struct ieee80211_hw *hw)
473 {
474         struct rtl_priv *rtlpriv = rtl_priv(hw);
475         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
476
477         rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
478 }
479
480 /*********************************************************
481  *
482  * tx information functions
483  *
484  *********************************************************/
485 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
486                                           struct rtl_tcb_desc *tcb_desc,
487                                           struct ieee80211_tx_info *info)
488 {
489         struct rtl_priv *rtlpriv = rtl_priv(hw);
490         u8 rate_flag = info->control.rates[0].flags;
491
492         tcb_desc->use_shortpreamble = false;
493
494         /* 1M can only use Long Preamble. 11B spec */
495         if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
496                 return;
497         else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
498                 tcb_desc->use_shortpreamble = true;
499
500         return;
501 }
502
503 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
504                                struct ieee80211_sta *sta,
505                                struct rtl_tcb_desc *tcb_desc,
506                                struct ieee80211_tx_info *info)
507 {
508         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
509         u8 rate_flag = info->control.rates[0].flags;
510         u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
511         tcb_desc->use_shortgi = false;
512
513         if (sta == NULL)
514                 return;
515
516         sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
517         sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
518
519         if (!(sta->ht_cap.ht_supported))
520                 return;
521
522         if (!sgi_40 && !sgi_20)
523                 return;
524
525         if (mac->opmode == NL80211_IFTYPE_STATION)
526                 bw_40 = mac->bw_40;
527         else if (mac->opmode == NL80211_IFTYPE_AP ||
528                 mac->opmode == NL80211_IFTYPE_ADHOC)
529                 bw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
530
531         if (bw_40 && sgi_40)
532                 tcb_desc->use_shortgi = true;
533         else if ((bw_40 == false) && sgi_20)
534                 tcb_desc->use_shortgi = true;
535
536         if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
537                 tcb_desc->use_shortgi = false;
538 }
539
540 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
541                                        struct rtl_tcb_desc *tcb_desc,
542                                        struct ieee80211_tx_info *info)
543 {
544         struct rtl_priv *rtlpriv = rtl_priv(hw);
545         u8 rate_flag = info->control.rates[0].flags;
546
547         /* Common Settings */
548         tcb_desc->rts_stbc = false;
549         tcb_desc->cts_enable = false;
550         tcb_desc->rts_sc = 0;
551         tcb_desc->rts_bw = false;
552         tcb_desc->rts_use_shortpreamble = false;
553         tcb_desc->rts_use_shortgi = false;
554
555         if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
556                 /* Use CTS-to-SELF in protection mode. */
557                 tcb_desc->rts_enable = true;
558                 tcb_desc->cts_enable = true;
559                 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
560         } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
561                 /* Use RTS-CTS in protection mode. */
562                 tcb_desc->rts_enable = true;
563                 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
564         }
565 }
566
567 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
568                                    struct ieee80211_sta *sta,
569                                    struct rtl_tcb_desc *tcb_desc)
570 {
571         struct rtl_priv *rtlpriv = rtl_priv(hw);
572         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
573         struct rtl_sta_info *sta_entry = NULL;
574         u8 ratr_index = 7;
575
576         if (sta) {
577                 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
578                 ratr_index = sta_entry->ratr_index;
579         }
580         if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
581                 if (mac->opmode == NL80211_IFTYPE_STATION) {
582                         tcb_desc->ratr_index = 0;
583                 } else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
584                         if (tcb_desc->multicast || tcb_desc->broadcast) {
585                                 tcb_desc->hw_rate =
586                                     rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
587                                 tcb_desc->use_driver_rate = 1;
588                         } else {
589                                 /* TODO */
590                         }
591                         tcb_desc->ratr_index = ratr_index;
592                 } else if (mac->opmode == NL80211_IFTYPE_AP) {
593                         tcb_desc->ratr_index = ratr_index;
594                 }
595         }
596
597         if (rtlpriv->dm.useramask) {
598                 /* TODO we will differentiate adhoc and station futrue  */
599                 if (mac->opmode == NL80211_IFTYPE_STATION) {
600                         tcb_desc->mac_id = 0;
601
602                         if (mac->mode == WIRELESS_MODE_N_24G)
603                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
604                         else if (mac->mode == WIRELESS_MODE_N_5G)
605                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
606                         else if (mac->mode & WIRELESS_MODE_G)
607                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
608                         else if (mac->mode & WIRELESS_MODE_B)
609                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
610                         else if (mac->mode & WIRELESS_MODE_A)
611                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
612                 } else if (mac->opmode == NL80211_IFTYPE_AP ||
613                         mac->opmode == NL80211_IFTYPE_ADHOC) {
614                         if (NULL != sta) {
615                                 if (sta->aid > 0)
616                                         tcb_desc->mac_id = sta->aid + 1;
617                                 else
618                                         tcb_desc->mac_id = 1;
619                         } else {
620                                 tcb_desc->mac_id = 0;
621                         }
622                 }
623         }
624
625 }
626
627 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
628                                       struct ieee80211_sta *sta,
629                                       struct rtl_tcb_desc *tcb_desc)
630 {
631         struct rtl_priv *rtlpriv = rtl_priv(hw);
632         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
633
634         tcb_desc->packet_bw = false;
635         if (!sta)
636                 return;
637         if (mac->opmode == NL80211_IFTYPE_AP ||
638             mac->opmode == NL80211_IFTYPE_ADHOC) {
639                 if (!(sta->ht_cap.ht_supported) ||
640                     !(sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
641                         return;
642         } else if (mac->opmode == NL80211_IFTYPE_STATION) {
643                 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
644                         return;
645         }
646         if (tcb_desc->multicast || tcb_desc->broadcast)
647                 return;
648
649         /*use legency rate, shall use 20MHz */
650         if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
651                 return;
652
653         tcb_desc->packet_bw = true;
654 }
655
656 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
657 {
658         struct rtl_priv *rtlpriv = rtl_priv(hw);
659         struct rtl_phy *rtlphy = &(rtlpriv->phy);
660         u8 hw_rate;
661
662         if (get_rf_type(rtlphy) == RF_2T2R)
663                 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
664         else
665                 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
666
667         return hw_rate;
668 }
669
670 /* mac80211's rate_idx is like this:
671  *
672  * 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
673  *
674  * B/G rate:
675  * (rx_status->flag & RX_FLAG_HT) = 0,
676  * DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
677  *
678  * N rate:
679  * (rx_status->flag & RX_FLAG_HT) = 1,
680  * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
681  *
682  * 5G band:rx_status->band == IEEE80211_BAND_5GHZ
683  * A rate:
684  * (rx_status->flag & RX_FLAG_HT) = 0,
685  * DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
686  *
687  * N rate:
688  * (rx_status->flag & RX_FLAG_HT) = 1,
689  * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
690  */
691 int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
692                          bool isht, u8 desc_rate, bool first_ampdu)
693 {
694         int rate_idx;
695
696         if (false == isht) {
697                 if (IEEE80211_BAND_2GHZ == hw->conf.channel->band) {
698                         switch (desc_rate) {
699                         case DESC92_RATE1M:
700                                 rate_idx = 0;
701                                 break;
702                         case DESC92_RATE2M:
703                                 rate_idx = 1;
704                                 break;
705                         case DESC92_RATE5_5M:
706                                 rate_idx = 2;
707                                 break;
708                         case DESC92_RATE11M:
709                                 rate_idx = 3;
710                                 break;
711                         case DESC92_RATE6M:
712                                 rate_idx = 4;
713                                 break;
714                         case DESC92_RATE9M:
715                                 rate_idx = 5;
716                                 break;
717                         case DESC92_RATE12M:
718                                 rate_idx = 6;
719                                 break;
720                         case DESC92_RATE18M:
721                                 rate_idx = 7;
722                                 break;
723                         case DESC92_RATE24M:
724                                 rate_idx = 8;
725                                 break;
726                         case DESC92_RATE36M:
727                                 rate_idx = 9;
728                                 break;
729                         case DESC92_RATE48M:
730                                 rate_idx = 10;
731                                 break;
732                         case DESC92_RATE54M:
733                                 rate_idx = 11;
734                                 break;
735                         default:
736                                 rate_idx = 0;
737                                 break;
738                         }
739                 } else {
740                         switch (desc_rate) {
741                         case DESC92_RATE6M:
742                                 rate_idx = 0;
743                                 break;
744                         case DESC92_RATE9M:
745                                 rate_idx = 1;
746                                 break;
747                         case DESC92_RATE12M:
748                                 rate_idx = 2;
749                                 break;
750                         case DESC92_RATE18M:
751                                 rate_idx = 3;
752                                 break;
753                         case DESC92_RATE24M:
754                                 rate_idx = 4;
755                                 break;
756                         case DESC92_RATE36M:
757                                 rate_idx = 5;
758                                 break;
759                         case DESC92_RATE48M:
760                                 rate_idx = 6;
761                                 break;
762                         case DESC92_RATE54M:
763                                 rate_idx = 7;
764                                 break;
765                         default:
766                                 rate_idx = 0;
767                                 break;
768                         }
769                 }
770
771         } else {
772
773                 switch (desc_rate) {
774                 case DESC92_RATEMCS0:
775                         rate_idx = 0;
776                         break;
777                 case DESC92_RATEMCS1:
778                         rate_idx = 1;
779                         break;
780                 case DESC92_RATEMCS2:
781                         rate_idx = 2;
782                         break;
783                 case DESC92_RATEMCS3:
784                         rate_idx = 3;
785                         break;
786                 case DESC92_RATEMCS4:
787                         rate_idx = 4;
788                         break;
789                 case DESC92_RATEMCS5:
790                         rate_idx = 5;
791                         break;
792                 case DESC92_RATEMCS6:
793                         rate_idx = 6;
794                         break;
795                 case DESC92_RATEMCS7:
796                         rate_idx = 7;
797                         break;
798                 case DESC92_RATEMCS8:
799                         rate_idx = 8;
800                         break;
801                 case DESC92_RATEMCS9:
802                         rate_idx = 9;
803                         break;
804                 case DESC92_RATEMCS10:
805                         rate_idx = 10;
806                         break;
807                 case DESC92_RATEMCS11:
808                         rate_idx = 11;
809                         break;
810                 case DESC92_RATEMCS12:
811                         rate_idx = 12;
812                         break;
813                 case DESC92_RATEMCS13:
814                         rate_idx = 13;
815                         break;
816                 case DESC92_RATEMCS14:
817                         rate_idx = 14;
818                         break;
819                 case DESC92_RATEMCS15:
820                         rate_idx = 15;
821                         break;
822                 default:
823                         rate_idx = 0;
824                         break;
825                 }
826         }
827         return rate_idx;
828 }
829 EXPORT_SYMBOL(rtlwifi_rate_mapping);
830
831 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
832                       struct ieee80211_tx_info *info,
833                       struct ieee80211_sta *sta,
834                       struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
835 {
836         struct rtl_priv *rtlpriv = rtl_priv(hw);
837         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
838         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
839         struct ieee80211_rate *txrate;
840         __le16 fc = hdr->frame_control;
841
842         txrate = ieee80211_get_tx_rate(hw, info);
843         tcb_desc->hw_rate = txrate->hw_value;
844
845         if (ieee80211_is_data(fc)) {
846                 /*
847                  *we set data rate INX 0
848                  *in rtl_rc.c   if skb is special data or
849                  *mgt which need low data rate.
850                  */
851
852                 /*
853                  *So tcb_desc->hw_rate is just used for
854                  *special data and mgt frames
855                  */
856                 if (info->control.rates[0].idx == 0 ||
857                                 ieee80211_is_nullfunc(fc)) {
858                         tcb_desc->use_driver_rate = true;
859                         tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
860
861                         tcb_desc->disable_ratefallback = 1;
862                 } else {
863                         /*
864                          *because hw will nerver use hw_rate
865                          *when tcb_desc->use_driver_rate = false
866                          *so we never set highest N rate here,
867                          *and N rate will all be controlled by FW
868                          *when tcb_desc->use_driver_rate = false
869                          */
870                         if (sta && (sta->ht_cap.ht_supported)) {
871                                 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
872                         } else {
873                                 if (rtlmac->mode == WIRELESS_MODE_B) {
874                                         tcb_desc->hw_rate =
875                                            rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
876                                 } else {
877                                         tcb_desc->hw_rate =
878                                            rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
879                                 }
880                         }
881                 }
882
883                 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
884                         tcb_desc->multicast = 1;
885                 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
886                         tcb_desc->broadcast = 1;
887
888                 _rtl_txrate_selectmode(hw, sta, tcb_desc);
889                 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
890                 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
891                 _rtl_query_shortgi(hw, sta, tcb_desc, info);
892                 _rtl_query_protection_mode(hw, tcb_desc, info);
893         } else {
894                 tcb_desc->use_driver_rate = true;
895                 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
896                 tcb_desc->disable_ratefallback = 1;
897                 tcb_desc->mac_id = 0;
898                 tcb_desc->packet_bw = false;
899         }
900 }
901 EXPORT_SYMBOL(rtl_get_tcb_desc);
902
903 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
904 {
905         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
906         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
907         struct rtl_priv *rtlpriv = rtl_priv(hw);
908         __le16 fc = hdr->frame_control;
909         u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
910         u8 category;
911
912         if (!ieee80211_is_action(fc))
913                 return true;
914
915         category = *act;
916         act++;
917         switch (category) {
918         case ACT_CAT_BA:
919                 switch (*act) {
920                 case ACT_ADDBAREQ:
921                         if (mac->act_scanning)
922                                 return false;
923
924                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
925                                  ("%s ACT_ADDBAREQ From :%pM\n",
926                                   is_tx ? "Tx" : "Rx", hdr->addr2));
927                         break;
928                 case ACT_ADDBARSP:
929                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
930                                  ("%s ACT_ADDBARSP From :%pM\n",
931                                   is_tx ? "Tx" : "Rx", hdr->addr2));
932                         break;
933                 case ACT_DELBA:
934                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
935                                  ("ACT_ADDBADEL From :%pM\n", hdr->addr2));
936                         break;
937                 }
938                 break;
939         default:
940                 break;
941         }
942
943         return true;
944 }
945
946 /*should call before software enc*/
947 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
948 {
949         struct rtl_priv *rtlpriv = rtl_priv(hw);
950         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
951         __le16 fc = rtl_get_fc(skb);
952         u16 ether_type;
953         u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
954         const struct iphdr *ip;
955
956         if (!ieee80211_is_data(fc))
957                 return false;
958
959
960         ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
961                               SNAP_SIZE + PROTOC_TYPE_SIZE);
962         ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
963         /*      ether_type = ntohs(ether_type); */
964
965         if (ETH_P_IP == ether_type) {
966                 if (IPPROTO_UDP == ip->protocol) {
967                         struct udphdr *udp = (struct udphdr *)((u8 *) ip +
968                                                                (ip->ihl << 2));
969                         if (((((u8 *) udp)[1] == 68) &&
970                              (((u8 *) udp)[3] == 67)) ||
971                             ((((u8 *) udp)[1] == 67) &&
972                              (((u8 *) udp)[3] == 68))) {
973                                 /*
974                                  * 68 : UDP BOOTP client
975                                  * 67 : UDP BOOTP server
976                                  */
977                                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
978                                          DBG_DMESG, ("dhcp %s !!\n",
979                                                      (is_tx) ? "Tx" : "Rx"));
980
981                                 if (is_tx) {
982                                         rtl_lps_leave(hw);
983                                         ppsc->last_delaylps_stamp_jiffies =
984                                             jiffies;
985                                 }
986
987                                 return true;
988                         }
989                 }
990         } else if (ETH_P_ARP == ether_type) {
991                 if (is_tx) {
992                         rtl_lps_leave(hw);
993                         ppsc->last_delaylps_stamp_jiffies = jiffies;
994                 }
995
996                 return true;
997         } else if (ETH_P_PAE == ether_type) {
998                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
999                          ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx"));
1000
1001                 if (is_tx) {
1002                         rtl_lps_leave(hw);
1003                         ppsc->last_delaylps_stamp_jiffies = jiffies;
1004                 }
1005
1006                 return true;
1007         } else if (ETH_P_IPV6 == ether_type) {
1008                 /* IPv6 */
1009                 return true;
1010         }
1011
1012         return false;
1013 }
1014
1015 /*********************************************************
1016  *
1017  * functions called by core.c
1018  *
1019  *********************************************************/
1020 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1021                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1022 {
1023         struct rtl_priv *rtlpriv = rtl_priv(hw);
1024         struct rtl_tid_data *tid_data;
1025         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1026         struct rtl_sta_info *sta_entry = NULL;
1027
1028         if (sta == NULL)
1029                 return -EINVAL;
1030
1031         if (unlikely(tid >= MAX_TID_COUNT))
1032                 return -EINVAL;
1033
1034         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1035         if (!sta_entry)
1036                 return -ENXIO;
1037         tid_data = &sta_entry->tids[tid];
1038
1039         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1040                  ("on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
1041                  tid_data->seq_number));
1042
1043         *ssn = tid_data->seq_number;
1044         tid_data->agg.agg_state = RTL_AGG_START;
1045
1046         ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1047
1048         return 0;
1049 }
1050
1051 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1052                 struct ieee80211_sta *sta, u16 tid)
1053 {
1054         struct rtl_priv *rtlpriv = rtl_priv(hw);
1055         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1056         struct rtl_sta_info *sta_entry = NULL;
1057
1058         if (sta == NULL)
1059                 return -EINVAL;
1060
1061         if (!sta->addr) {
1062                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
1063                 return -EINVAL;
1064         }
1065
1066         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1067                  ("on ra = %pM tid = %d\n", sta->addr, tid));
1068
1069         if (unlikely(tid >= MAX_TID_COUNT))
1070                 return -EINVAL;
1071
1072         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1073         sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1074
1075         ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1076
1077         return 0;
1078 }
1079
1080 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1081                 struct ieee80211_sta *sta, u16 tid)
1082 {
1083         struct rtl_priv *rtlpriv = rtl_priv(hw);
1084         struct rtl_sta_info *sta_entry = NULL;
1085
1086         if (sta == NULL)
1087                 return -EINVAL;
1088
1089         if (!sta->addr) {
1090                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
1091                 return -EINVAL;
1092         }
1093
1094         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1095                  ("on ra = %pM tid = %d\n", sta->addr, tid));
1096
1097         if (unlikely(tid >= MAX_TID_COUNT))
1098                 return -EINVAL;
1099
1100         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1101         sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1102
1103         return 0;
1104 }
1105
1106 /*********************************************************
1107  *
1108  * wq & timer callback functions
1109  *
1110  *********************************************************/
1111 void rtl_watchdog_wq_callback(void *data)
1112 {
1113         struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1114                                                             struct rtl_works,
1115                                                             watchdog_wq);
1116         struct ieee80211_hw *hw = rtlworks->hw;
1117         struct rtl_priv *rtlpriv = rtl_priv(hw);
1118         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1119         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1120         bool busytraffic = false;
1121         bool higher_busytraffic = false;
1122         bool higher_busyrxtraffic = false;
1123         u8 idx, tid;
1124         u32 rx_cnt_inp4eriod = 0;
1125         u32 tx_cnt_inp4eriod = 0;
1126         u32 aver_rx_cnt_inperiod = 0;
1127         u32 aver_tx_cnt_inperiod = 0;
1128         u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1129         u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1130         bool enter_ps = false;
1131
1132         if (is_hal_stop(rtlhal))
1133                 return;
1134
1135         /* <1> Determine if action frame is allowed */
1136         if (mac->link_state > MAC80211_NOLINK) {
1137                 if (mac->cnt_after_linked < 20)
1138                         mac->cnt_after_linked++;
1139         } else {
1140                 mac->cnt_after_linked = 0;
1141         }
1142
1143         /*
1144          *<2> to check if traffic busy, if
1145          * busytraffic we don't change channel
1146          */
1147         if (mac->link_state >= MAC80211_LINKED) {
1148
1149                 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1150                 for (idx = 0; idx <= 2; idx++) {
1151                         rtlpriv->link_info.num_rx_in4period[idx] =
1152                             rtlpriv->link_info.num_rx_in4period[idx + 1];
1153                         rtlpriv->link_info.num_tx_in4period[idx] =
1154                             rtlpriv->link_info.num_tx_in4period[idx + 1];
1155                 }
1156                 rtlpriv->link_info.num_rx_in4period[3] =
1157                     rtlpriv->link_info.num_rx_inperiod;
1158                 rtlpriv->link_info.num_tx_in4period[3] =
1159                     rtlpriv->link_info.num_tx_inperiod;
1160                 for (idx = 0; idx <= 3; idx++) {
1161                         rx_cnt_inp4eriod +=
1162                             rtlpriv->link_info.num_rx_in4period[idx];
1163                         tx_cnt_inp4eriod +=
1164                             rtlpriv->link_info.num_tx_in4period[idx];
1165                 }
1166                 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1167                 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1168
1169                 /* (2) check traffic busy */
1170                 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
1171                         busytraffic = true;
1172
1173                 /* Higher Tx/Rx data. */
1174                 if (aver_rx_cnt_inperiod > 4000 ||
1175                     aver_tx_cnt_inperiod > 4000) {
1176                         higher_busytraffic = true;
1177
1178                         /* Extremely high Rx data. */
1179                         if (aver_rx_cnt_inperiod > 5000)
1180                                 higher_busyrxtraffic = true;
1181                 }
1182
1183                 /* check every tid's tx traffic */
1184                 for (tid = 0; tid <= 7; tid++) {
1185                         for (idx = 0; idx <= 2; idx++)
1186                                 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1187                                   rtlpriv->link_info.tidtx_in4period[tid]
1188                                   [idx + 1];
1189                         rtlpriv->link_info.tidtx_in4period[tid][3] =
1190                                 rtlpriv->link_info.tidtx_inperiod[tid];
1191
1192                         for (idx = 0; idx <= 3; idx++)
1193                                 tidtx_inp4eriod[tid] +=
1194                                   rtlpriv->link_info.tidtx_in4period[tid][idx];
1195                         aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1196                         if (aver_tidtx_inperiod[tid] > 5000)
1197                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1198                                                    true;
1199                         else
1200                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1201                                                    false;
1202                 }
1203
1204                 if (((rtlpriv->link_info.num_rx_inperiod +
1205                       rtlpriv->link_info.num_tx_inperiod) > 8) ||
1206                     (rtlpriv->link_info.num_rx_inperiod > 2))
1207                         enter_ps = false;
1208                 else
1209                         enter_ps = true;
1210
1211                 /* LeisurePS only work in infra mode. */
1212                 if (enter_ps)
1213                         rtl_lps_enter(hw);
1214                 else
1215                         rtl_lps_leave(hw);
1216         }
1217
1218         rtlpriv->link_info.num_rx_inperiod = 0;
1219         rtlpriv->link_info.num_tx_inperiod = 0;
1220         for (tid = 0; tid <= 7; tid++)
1221                 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1222
1223         rtlpriv->link_info.busytraffic = busytraffic;
1224         rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1225         rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1226
1227         /* <3> DM */
1228         rtlpriv->cfg->ops->dm_watchdog(hw);
1229 }
1230
1231 void rtl_watch_dog_timer_callback(unsigned long data)
1232 {
1233         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1234         struct rtl_priv *rtlpriv = rtl_priv(hw);
1235
1236         queue_delayed_work(rtlpriv->works.rtl_wq,
1237                            &rtlpriv->works.watchdog_wq, 0);
1238
1239         mod_timer(&rtlpriv->works.watchdog_timer,
1240                   jiffies + MSECS(RTL_WATCH_DOG_TIME));
1241 }
1242
1243 /*********************************************************
1244  *
1245  * frame process functions
1246  *
1247  *********************************************************/
1248 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1249 {
1250         struct ieee80211_mgmt *mgmt = (void *)data;
1251         u8 *pos, *end;
1252
1253         pos = (u8 *)mgmt->u.beacon.variable;
1254         end = data + len;
1255         while (pos < end) {
1256                 if (pos + 2 + pos[1] > end)
1257                         return NULL;
1258
1259                 if (pos[0] == ie)
1260                         return pos;
1261
1262                 pos += 2 + pos[1];
1263         }
1264         return NULL;
1265 }
1266
1267 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1268 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
1269 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1270                 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1271 {
1272         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1273         struct sk_buff *skb;
1274         struct ieee80211_mgmt *action_frame;
1275
1276         /* 27 = header + category + action + smps mode */
1277         skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1278         if (!skb)
1279                 return NULL;
1280
1281         skb_reserve(skb, hw->extra_tx_headroom);
1282         action_frame = (void *)skb_put(skb, 27);
1283         memset(action_frame, 0, 27);
1284         memcpy(action_frame->da, da, ETH_ALEN);
1285         memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1286         memcpy(action_frame->bssid, bssid, ETH_ALEN);
1287         action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1288                                                   IEEE80211_STYPE_ACTION);
1289         action_frame->u.action.category = WLAN_CATEGORY_HT;
1290         action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1291         switch (smps) {
1292         case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1293         case IEEE80211_SMPS_NUM_MODES:/* 4 */
1294                 WARN_ON(1);
1295         case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1296                 action_frame->u.action.u.ht_smps.smps_control =
1297                                 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1298                 break;
1299         case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1300                 action_frame->u.action.u.ht_smps.smps_control =
1301                                 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1302                 break;
1303         case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1304                 action_frame->u.action.u.ht_smps.smps_control =
1305                                 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1306                 break;
1307         }
1308
1309         return skb;
1310 }
1311
1312 int rtl_send_smps_action(struct ieee80211_hw *hw,
1313                 struct ieee80211_sta *sta, u8 *da, u8 *bssid,
1314                 enum ieee80211_smps_mode smps)
1315 {
1316         struct rtl_priv *rtlpriv = rtl_priv(hw);
1317         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1318         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1319         struct sk_buff *skb = rtl_make_smps_action(hw, smps, da, bssid);
1320         struct rtl_tcb_desc tcb_desc;
1321         memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1322
1323         if (rtlpriv->mac80211.act_scanning)
1324                 goto err_free;
1325
1326         if (!sta)
1327                 goto err_free;
1328
1329         if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1330                 goto err_free;
1331
1332         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1333                 goto err_free;
1334
1335         /* this is a type = mgmt * stype = action frame */
1336         if (skb) {
1337                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1338                 struct rtl_sta_info *sta_entry =
1339                         (struct rtl_sta_info *) sta->drv_priv;
1340                 sta_entry->mimo_ps = smps;
1341                 rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
1342
1343                 info->control.rates[0].idx = 0;
1344                 info->control.sta = sta;
1345                 info->band = hw->conf.channel->band;
1346                 rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
1347         }
1348 err_free:
1349         return 0;
1350 }
1351
1352 /*********************************************************
1353  *
1354  * IOT functions
1355  *
1356  *********************************************************/
1357 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1358                 struct octet_string vendor_ie)
1359 {
1360         struct rtl_priv *rtlpriv = rtl_priv(hw);
1361         bool matched = false;
1362         static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1363         static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1364         static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1365         static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1366         static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1367         static u8 racap[] = { 0x00, 0x0c, 0x43 };
1368         static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1369         static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1370
1371         if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1372                 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1373                 rtlpriv->mac80211.vendor = PEER_ATH;
1374                 matched = true;
1375         } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1376                 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1377                 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1378                 rtlpriv->mac80211.vendor = PEER_BROAD;
1379                 matched = true;
1380         } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1381                 rtlpriv->mac80211.vendor = PEER_RAL;
1382                 matched = true;
1383         } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1384                 rtlpriv->mac80211.vendor = PEER_CISCO;
1385                 matched = true;
1386         } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1387                 rtlpriv->mac80211.vendor = PEER_MARV;
1388                 matched = true;
1389         }
1390
1391         return matched;
1392 }
1393
1394 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1395                 unsigned int len)
1396 {
1397         struct ieee80211_mgmt *mgmt = (void *)data;
1398         struct octet_string vendor_ie;
1399         u8 *pos, *end;
1400
1401         pos = (u8 *)mgmt->u.beacon.variable;
1402         end = data + len;
1403         while (pos < end) {
1404                 if (pos[0] == 221) {
1405                         vendor_ie.length = pos[1];
1406                         vendor_ie.octet = &pos[2];
1407                         if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1408                                 return true;
1409                 }
1410
1411                 if (pos + 2 + pos[1] > end)
1412                         return false;
1413
1414                 pos += 2 + pos[1];
1415         }
1416         return false;
1417 }
1418
1419 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1420 {
1421         struct rtl_priv *rtlpriv = rtl_priv(hw);
1422         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1423         struct ieee80211_hdr *hdr = (void *)data;
1424         u32 vendor = PEER_UNKNOWN;
1425
1426         static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1427         static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1428         static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1429         static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1430         static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1431         static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1432         static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1433         static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1434         static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1435         static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1436         static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1437         static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1438         static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1439         static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1440         static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1441         static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1442
1443         if (mac->opmode != NL80211_IFTYPE_STATION)
1444                 return;
1445
1446         if (mac->link_state == MAC80211_NOLINK) {
1447                 mac->vendor = PEER_UNKNOWN;
1448                 return;
1449         }
1450
1451         if (mac->cnt_after_linked > 2)
1452                 return;
1453
1454         /* check if this really is a beacon */
1455         if (!ieee80211_is_beacon(hdr->frame_control))
1456                 return;
1457
1458         /* min. beacon length + FCS_LEN */
1459         if (len <= 40 + FCS_LEN)
1460                 return;
1461
1462         /* and only beacons from the associated BSSID, please */
1463         if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid))
1464                 return;
1465
1466         if (rtl_find_221_ie(hw, data, len))
1467                 vendor = mac->vendor;
1468
1469         if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1470                 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1471                 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1472                 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1473                 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1474                 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1475                 vendor == PEER_ATH) {
1476                 vendor = PEER_ATH;
1477                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>ath find\n"));
1478         } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1479                 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1480                 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1481                 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1482                 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1483                 vendor == PEER_RAL) {
1484                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>ral findn\n"));
1485                 vendor = PEER_RAL;
1486         } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1487                 vendor == PEER_CISCO) {
1488                 vendor = PEER_CISCO;
1489                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>cisco find\n"));
1490         } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1491                 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1492                 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1493                 vendor == PEER_BROAD) {
1494                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>broad find\n"));
1495                 vendor = PEER_BROAD;
1496         } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1497                 vendor == PEER_MARV) {
1498                 vendor = PEER_MARV;
1499                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>marv find\n"));
1500         }
1501
1502         mac->vendor = vendor;
1503 }
1504
1505 /*********************************************************
1506  *
1507  * sysfs functions
1508  *
1509  *********************************************************/
1510 static ssize_t rtl_show_debug_level(struct device *d,
1511                                     struct device_attribute *attr, char *buf)
1512 {
1513         struct ieee80211_hw *hw = dev_get_drvdata(d);
1514         struct rtl_priv *rtlpriv = rtl_priv(hw);
1515
1516         return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1517 }
1518
1519 static ssize_t rtl_store_debug_level(struct device *d,
1520                                      struct device_attribute *attr,
1521                                      const char *buf, size_t count)
1522 {
1523         struct ieee80211_hw *hw = dev_get_drvdata(d);
1524         struct rtl_priv *rtlpriv = rtl_priv(hw);
1525         unsigned long val;
1526         int ret;
1527
1528         ret = strict_strtoul(buf, 0, &val);
1529         if (ret) {
1530                 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1531         } else {
1532                 rtlpriv->dbg.global_debuglevel = val;
1533                 printk(KERN_DEBUG "debuglevel:%x\n",
1534                        rtlpriv->dbg.global_debuglevel);
1535         }
1536
1537         return strnlen(buf, count);
1538 }
1539
1540 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1541                    rtl_show_debug_level, rtl_store_debug_level);
1542
1543 static struct attribute *rtl_sysfs_entries[] = {
1544
1545         &dev_attr_debug_level.attr,
1546
1547         NULL
1548 };
1549
1550 /*
1551  * "name" is folder name witch will be
1552  * put in device directory like :
1553  * sys/devices/pci0000:00/0000:00:1c.4/
1554  * 0000:06:00.0/rtl_sysfs
1555  */
1556 struct attribute_group rtl_attribute_group = {
1557         .name = "rtlsysfs",
1558         .attrs = rtl_sysfs_entries,
1559 };
1560
1561 MODULE_AUTHOR("lizhaoming       <chaoming_li@realsil.com.cn>");
1562 MODULE_AUTHOR("Realtek WlanFAE  <wlanfae@realtek.com>");
1563 MODULE_AUTHOR("Larry Finger     <Larry.FInger@lwfinger.net>");
1564 MODULE_LICENSE("GPL");
1565 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1566
1567 static int __init rtl_core_module_init(void)
1568 {
1569         if (rtl_rate_control_register())
1570                 pr_err("Unable to register rtl_rc, use default RC !!\n");
1571
1572         return 0;
1573 }
1574
1575 static void __exit rtl_core_module_exit(void)
1576 {
1577         /*RC*/
1578         rtl_rate_control_unregister();
1579 }
1580
1581 module_init(rtl_core_module_init);
1582 module_exit(rtl_core_module_exit);