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
rtl_tid_to_ac(struct ieee80211_hw * hw,u8 tid)171 u8 rtl_tid_to_ac(struct ieee80211_hw *hw, u8 tid)
172 {
173 return tid_to_ac[tid];
174 }
175
_rtl_init_hw_ht_capab(struct ieee80211_hw * hw,struct ieee80211_sta_ht_cap * ht_cap)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
_rtl_init_mac80211(struct ieee80211_hw * hw)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
_rtl_init_deferred_work(struct ieee80211_hw * hw)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
rtl_deinit_deferred_work(struct ieee80211_hw * hw)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
rtl_init_rfkill(struct ieee80211_hw * hw)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 = true;
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
rtl_deinit_rfkill(struct ieee80211_hw * hw)417 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
418 {
419 wiphy_rfkill_stop_polling(hw->wiphy);
420 }
421
rtl_init_core(struct ieee80211_hw * hw)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 mutex_init(&rtlpriv->locks.ps_mutex);
452 spin_lock_init(&rtlpriv->locks.ips_lock);
453 spin_lock_init(&rtlpriv->locks.irq_th_lock);
454 spin_lock_init(&rtlpriv->locks.h2c_lock);
455 spin_lock_init(&rtlpriv->locks.rf_ps_lock);
456 spin_lock_init(&rtlpriv->locks.rf_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
rtl_deinit_core(struct ieee80211_hw * hw)468 void rtl_deinit_core(struct ieee80211_hw *hw)
469 {
470 }
471
rtl_init_rx_config(struct ieee80211_hw * hw)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 *********************************************************/
_rtl_qurey_shortpreamble_mode(struct ieee80211_hw * hw,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)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
_rtl_query_shortgi(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)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
_rtl_query_protection_mode(struct ieee80211_hw * hw,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)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
_rtl_txrate_selectmode(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc)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
_rtl_query_bandwidth_mode(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc)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
_rtl_get_highest_n_rate(struct ieee80211_hw * hw)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 */
rtlwifi_rate_mapping(struct ieee80211_hw * hw,bool isht,u8 desc_rate,bool first_ampdu)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
rtl_get_tcb_desc(struct ieee80211_hw * hw,struct ieee80211_tx_info * info,struct ieee80211_sta * sta,struct sk_buff * skb,struct rtl_tcb_desc * tcb_desc)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
rtl_action_proc(struct ieee80211_hw * hw,struct sk_buff * skb,u8 is_tx)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*/
rtl_is_special_data(struct ieee80211_hw * hw,struct sk_buff * skb,u8 is_tx)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 *********************************************************/
rtl_tx_agg_start(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid,u16 * ssn)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
rtl_tx_agg_stop(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid)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
rtl_tx_agg_oper(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid)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 *********************************************************/
rtl_watchdog_wq_callback(void * data)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
rtl_watch_dog_timer_callback(unsigned long data)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 *********************************************************/
rtl_find_ie(u8 * data,unsigned int len,u8 ie)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 */
rtl_make_smps_action(struct ieee80211_hw * hw,enum ieee80211_smps_mode smps,u8 * da,u8 * bssid)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
rtl_send_smps_action(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u8 * da,u8 * bssid,enum ieee80211_smps_mode smps)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 *********************************************************/
rtl_chk_vendor_ouisub(struct ieee80211_hw * hw,struct octet_string vendor_ie)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
rtl_find_221_ie(struct ieee80211_hw * hw,u8 * data,unsigned int len)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
rtl_recognize_peer(struct ieee80211_hw * hw,u8 * data,unsigned int len)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 *********************************************************/
rtl_show_debug_level(struct device * d,struct device_attribute * attr,char * buf)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
rtl_store_debug_level(struct device * d,struct device_attribute * attr,const char * buf,size_t count)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
rtl_core_module_init(void)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
rtl_core_module_exit(void)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);
1583