1 /******************************************************************************
2 *
3 * Copyright(c) 2009-2012 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 #include "wifi.h"
31 #include "rc.h"
32 #include "base.h"
33 #include "efuse.h"
34 #include "cam.h"
35 #include "ps.h"
36 #include "regd.h"
37
38 #include <linux/ip.h>
39 #include <linux/module.h>
40
41 /*
42 *NOTICE!!!: This file will be very big, we should
43 *keep it clear under following roles:
44 *
45 *This file include following parts, so, if you add new
46 *functions into this file, please check which part it
47 *should includes. or check if you should add new part
48 *for this file:
49 *
50 *1) mac80211 init functions
51 *2) tx information functions
52 *3) functions called by core.c
53 *4) wq & timer callback functions
54 *5) frame process functions
55 *6) IOT functions
56 *7) sysfs functions
57 *8) ...
58 */
59
60 /*********************************************************
61 *
62 * mac80211 init functions
63 *
64 *********************************************************/
65 static struct ieee80211_channel rtl_channeltable_2g[] = {
66 {.center_freq = 2412, .hw_value = 1,},
67 {.center_freq = 2417, .hw_value = 2,},
68 {.center_freq = 2422, .hw_value = 3,},
69 {.center_freq = 2427, .hw_value = 4,},
70 {.center_freq = 2432, .hw_value = 5,},
71 {.center_freq = 2437, .hw_value = 6,},
72 {.center_freq = 2442, .hw_value = 7,},
73 {.center_freq = 2447, .hw_value = 8,},
74 {.center_freq = 2452, .hw_value = 9,},
75 {.center_freq = 2457, .hw_value = 10,},
76 {.center_freq = 2462, .hw_value = 11,},
77 {.center_freq = 2467, .hw_value = 12,},
78 {.center_freq = 2472, .hw_value = 13,},
79 {.center_freq = 2484, .hw_value = 14,},
80 };
81
82 static struct ieee80211_channel rtl_channeltable_5g[] = {
83 {.center_freq = 5180, .hw_value = 36,},
84 {.center_freq = 5200, .hw_value = 40,},
85 {.center_freq = 5220, .hw_value = 44,},
86 {.center_freq = 5240, .hw_value = 48,},
87 {.center_freq = 5260, .hw_value = 52,},
88 {.center_freq = 5280, .hw_value = 56,},
89 {.center_freq = 5300, .hw_value = 60,},
90 {.center_freq = 5320, .hw_value = 64,},
91 {.center_freq = 5500, .hw_value = 100,},
92 {.center_freq = 5520, .hw_value = 104,},
93 {.center_freq = 5540, .hw_value = 108,},
94 {.center_freq = 5560, .hw_value = 112,},
95 {.center_freq = 5580, .hw_value = 116,},
96 {.center_freq = 5600, .hw_value = 120,},
97 {.center_freq = 5620, .hw_value = 124,},
98 {.center_freq = 5640, .hw_value = 128,},
99 {.center_freq = 5660, .hw_value = 132,},
100 {.center_freq = 5680, .hw_value = 136,},
101 {.center_freq = 5700, .hw_value = 140,},
102 {.center_freq = 5745, .hw_value = 149,},
103 {.center_freq = 5765, .hw_value = 153,},
104 {.center_freq = 5785, .hw_value = 157,},
105 {.center_freq = 5805, .hw_value = 161,},
106 {.center_freq = 5825, .hw_value = 165,},
107 };
108
109 static struct ieee80211_rate rtl_ratetable_2g[] = {
110 {.bitrate = 10, .hw_value = 0x00,},
111 {.bitrate = 20, .hw_value = 0x01,},
112 {.bitrate = 55, .hw_value = 0x02,},
113 {.bitrate = 110, .hw_value = 0x03,},
114 {.bitrate = 60, .hw_value = 0x04,},
115 {.bitrate = 90, .hw_value = 0x05,},
116 {.bitrate = 120, .hw_value = 0x06,},
117 {.bitrate = 180, .hw_value = 0x07,},
118 {.bitrate = 240, .hw_value = 0x08,},
119 {.bitrate = 360, .hw_value = 0x09,},
120 {.bitrate = 480, .hw_value = 0x0a,},
121 {.bitrate = 540, .hw_value = 0x0b,},
122 };
123
124 static struct ieee80211_rate rtl_ratetable_5g[] = {
125 {.bitrate = 60, .hw_value = 0x04,},
126 {.bitrate = 90, .hw_value = 0x05,},
127 {.bitrate = 120, .hw_value = 0x06,},
128 {.bitrate = 180, .hw_value = 0x07,},
129 {.bitrate = 240, .hw_value = 0x08,},
130 {.bitrate = 360, .hw_value = 0x09,},
131 {.bitrate = 480, .hw_value = 0x0a,},
132 {.bitrate = 540, .hw_value = 0x0b,},
133 };
134
135 static const struct ieee80211_supported_band rtl_band_2ghz = {
136 .band = IEEE80211_BAND_2GHZ,
137
138 .channels = rtl_channeltable_2g,
139 .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
140
141 .bitrates = rtl_ratetable_2g,
142 .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
143
144 .ht_cap = {0},
145 };
146
147 static struct ieee80211_supported_band rtl_band_5ghz = {
148 .band = IEEE80211_BAND_5GHZ,
149
150 .channels = rtl_channeltable_5g,
151 .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
152
153 .bitrates = rtl_ratetable_5g,
154 .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
155
156 .ht_cap = {0},
157 };
158
159 static const u8 tid_to_ac[] = {
160 2, /* IEEE80211_AC_BE */
161 3, /* IEEE80211_AC_BK */
162 3, /* IEEE80211_AC_BK */
163 2, /* IEEE80211_AC_BE */
164 1, /* IEEE80211_AC_VI */
165 1, /* IEEE80211_AC_VI */
166 0, /* IEEE80211_AC_VO */
167 0, /* IEEE80211_AC_VO */
168 };
169
rtl_tid_to_ac(struct ieee80211_hw * hw,u8 tid)170 u8 rtl_tid_to_ac(struct ieee80211_hw *hw, u8 tid)
171 {
172 return tid_to_ac[tid];
173 }
174
_rtl_init_hw_ht_capab(struct ieee80211_hw * hw,struct ieee80211_sta_ht_cap * ht_cap)175 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
176 struct ieee80211_sta_ht_cap *ht_cap)
177 {
178 struct rtl_priv *rtlpriv = rtl_priv(hw);
179 struct rtl_phy *rtlphy = &(rtlpriv->phy);
180
181 ht_cap->ht_supported = true;
182 ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
183 IEEE80211_HT_CAP_SGI_40 |
184 IEEE80211_HT_CAP_SGI_20 |
185 IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
186
187 if (rtlpriv->rtlhal.disable_amsdu_8k)
188 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
189
190 /*
191 *Maximum length of AMPDU that the STA can receive.
192 *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
193 */
194 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
195
196 /*Minimum MPDU start spacing , */
197 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
198
199 ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
200
201 /*
202 *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
203 *base on ant_num
204 *rx_mask: RX mask
205 *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
206 *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
207 *if rx_ant >=3 rx_mask[2]=0xff;
208 *if BW_40 rx_mask[4]=0x01;
209 *highest supported RX rate
210 */
211 if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
212
213 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T2R or 2T2R\n");
214
215 ht_cap->mcs.rx_mask[0] = 0xFF;
216 ht_cap->mcs.rx_mask[1] = 0xFF;
217 ht_cap->mcs.rx_mask[4] = 0x01;
218
219 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
220 } else if (get_rf_type(rtlphy) == RF_1T1R) {
221
222 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T1R\n");
223
224 ht_cap->mcs.rx_mask[0] = 0xFF;
225 ht_cap->mcs.rx_mask[1] = 0x00;
226 ht_cap->mcs.rx_mask[4] = 0x01;
227
228 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
229 }
230 }
231
_rtl_init_mac80211(struct ieee80211_hw * hw)232 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
233 {
234 struct rtl_priv *rtlpriv = rtl_priv(hw);
235 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
236 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
237 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
238 struct ieee80211_supported_band *sband;
239
240
241 if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
242 BAND_ON_BOTH) {
243 /* 1: 2.4 G bands */
244 /* <1> use mac->bands as mem for hw->wiphy->bands */
245 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
246
247 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
248 * to default value(1T1R) */
249 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
250 sizeof(struct ieee80211_supported_band));
251
252 /* <3> init ht cap base on ant_num */
253 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
254
255 /* <4> set mac->sband to wiphy->sband */
256 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
257
258 /* 2: 5 G bands */
259 /* <1> use mac->bands as mem for hw->wiphy->bands */
260 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
261
262 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
263 * to default value(1T1R) */
264 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
265 sizeof(struct ieee80211_supported_band));
266
267 /* <3> init ht cap base on ant_num */
268 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
269
270 /* <4> set mac->sband to wiphy->sband */
271 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
272 } else {
273 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
274 /* <1> use mac->bands as mem for hw->wiphy->bands */
275 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
276
277 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
278 * to default value(1T1R) */
279 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
280 &rtl_band_2ghz,
281 sizeof(struct ieee80211_supported_band));
282
283 /* <3> init ht cap base on ant_num */
284 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
285
286 /* <4> set mac->sband to wiphy->sband */
287 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
288 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
289 /* <1> use mac->bands as mem for hw->wiphy->bands */
290 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
291
292 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
293 * to default value(1T1R) */
294 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
295 &rtl_band_5ghz,
296 sizeof(struct ieee80211_supported_band));
297
298 /* <3> init ht cap base on ant_num */
299 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
300
301 /* <4> set mac->sband to wiphy->sband */
302 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
303 } else {
304 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG, "Err BAND %d\n",
305 rtlhal->current_bandtype);
306 }
307 }
308 /* <5> set hw caps */
309 hw->flags = IEEE80211_HW_SIGNAL_DBM |
310 IEEE80211_HW_RX_INCLUDES_FCS |
311 IEEE80211_HW_AMPDU_AGGREGATION |
312 IEEE80211_HW_CONNECTION_MONITOR |
313 /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
314 IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
315
316 /* swlps or hwlps has been set in diff chip in init_sw_vars */
317 if (rtlpriv->psc.swctrl_lps)
318 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
319 IEEE80211_HW_PS_NULLFUNC_STACK |
320 /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
321 0;
322
323 hw->wiphy->interface_modes =
324 BIT(NL80211_IFTYPE_AP) |
325 BIT(NL80211_IFTYPE_STATION) |
326 BIT(NL80211_IFTYPE_ADHOC);
327
328 hw->wiphy->rts_threshold = 2347;
329
330 hw->queues = AC_MAX;
331 hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
332
333 /* TODO: Correct this value for our hw */
334 /* TODO: define these hard code value */
335 hw->channel_change_time = 100;
336 hw->max_listen_interval = 10;
337 hw->max_rate_tries = 4;
338 /* hw->max_rates = 1; */
339 hw->sta_data_size = sizeof(struct rtl_sta_info);
340
341 /* <6> mac address */
342 if (is_valid_ether_addr(rtlefuse->dev_addr)) {
343 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
344 } else {
345 u8 rtlmac1[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
346 get_random_bytes((rtlmac1 + (ETH_ALEN - 1)), 1);
347 SET_IEEE80211_PERM_ADDR(hw, rtlmac1);
348 }
349
350 }
351
_rtl_init_deferred_work(struct ieee80211_hw * hw)352 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
353 {
354 struct rtl_priv *rtlpriv = rtl_priv(hw);
355
356 /* <1> timer */
357 init_timer(&rtlpriv->works.watchdog_timer);
358 setup_timer(&rtlpriv->works.watchdog_timer,
359 rtl_watch_dog_timer_callback, (unsigned long)hw);
360
361 /* <2> work queue */
362 rtlpriv->works.hw = hw;
363 rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
364 INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
365 (void *)rtl_watchdog_wq_callback);
366 INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
367 (void *)rtl_ips_nic_off_wq_callback);
368 INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
369 (void *)rtl_swlps_wq_callback);
370 INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
371 (void *)rtl_swlps_rfon_wq_callback);
372
373 }
374
rtl_deinit_deferred_work(struct ieee80211_hw * hw)375 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
376 {
377 struct rtl_priv *rtlpriv = rtl_priv(hw);
378
379 del_timer_sync(&rtlpriv->works.watchdog_timer);
380
381 cancel_delayed_work(&rtlpriv->works.watchdog_wq);
382 cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
383 cancel_delayed_work(&rtlpriv->works.ps_work);
384 cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
385 }
386
rtl_init_rfkill(struct ieee80211_hw * hw)387 void rtl_init_rfkill(struct ieee80211_hw *hw)
388 {
389 struct rtl_priv *rtlpriv = rtl_priv(hw);
390
391 bool radio_state;
392 bool blocked;
393 u8 valid = 0;
394
395 /*set init state to on */
396 rtlpriv->rfkill.rfkill_state = true;
397 wiphy_rfkill_set_hw_state(hw->wiphy, 0);
398
399 radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
400
401 if (valid) {
402 pr_info("wireless switch is %s\n",
403 rtlpriv->rfkill.rfkill_state ? "on" : "off");
404
405 rtlpriv->rfkill.rfkill_state = radio_state;
406
407 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
408 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
409 }
410
411 wiphy_rfkill_start_polling(hw->wiphy);
412 }
413 EXPORT_SYMBOL(rtl_init_rfkill);
414
rtl_deinit_rfkill(struct ieee80211_hw * hw)415 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
416 {
417 wiphy_rfkill_stop_polling(hw->wiphy);
418 }
419
rtl_init_core(struct ieee80211_hw * hw)420 int rtl_init_core(struct ieee80211_hw *hw)
421 {
422 struct rtl_priv *rtlpriv = rtl_priv(hw);
423 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
424
425 /* <1> init mac80211 */
426 _rtl_init_mac80211(hw);
427 rtlmac->hw = hw;
428
429 /* <2> rate control register */
430 hw->rate_control_algorithm = "rtl_rc";
431
432 /*
433 * <3> init CRDA must come after init
434 * mac80211 hw in _rtl_init_mac80211.
435 */
436 if (rtl_regd_init(hw, rtl_reg_notifier)) {
437 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "REGD init failed\n");
438 return 1;
439 } else {
440 /* CRDA regd hint must after init CRDA */
441 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
442 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
443 "regulatory_hint fail\n");
444 }
445 }
446
447 /* <4> locks */
448 mutex_init(&rtlpriv->locks.conf_mutex);
449 mutex_init(&rtlpriv->locks.ps_mutex);
450 spin_lock_init(&rtlpriv->locks.ips_lock);
451 spin_lock_init(&rtlpriv->locks.irq_th_lock);
452 spin_lock_init(&rtlpriv->locks.h2c_lock);
453 spin_lock_init(&rtlpriv->locks.rf_ps_lock);
454 spin_lock_init(&rtlpriv->locks.rf_lock);
455 spin_lock_init(&rtlpriv->locks.waitq_lock);
456 spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
457
458 rtlmac->link_state = MAC80211_NOLINK;
459
460 /* <5> init deferred work */
461 _rtl_init_deferred_work(hw);
462
463 return 0;
464 }
465
rtl_deinit_core(struct ieee80211_hw * hw)466 void rtl_deinit_core(struct ieee80211_hw *hw)
467 {
468 }
469
rtl_init_rx_config(struct ieee80211_hw * hw)470 void rtl_init_rx_config(struct ieee80211_hw *hw)
471 {
472 struct rtl_priv *rtlpriv = rtl_priv(hw);
473 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
474
475 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
476 }
477
478 /*********************************************************
479 *
480 * tx information functions
481 *
482 *********************************************************/
_rtl_qurey_shortpreamble_mode(struct ieee80211_hw * hw,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)483 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
484 struct rtl_tcb_desc *tcb_desc,
485 struct ieee80211_tx_info *info)
486 {
487 struct rtl_priv *rtlpriv = rtl_priv(hw);
488 u8 rate_flag = info->control.rates[0].flags;
489
490 tcb_desc->use_shortpreamble = false;
491
492 /* 1M can only use Long Preamble. 11B spec */
493 if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
494 return;
495 else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
496 tcb_desc->use_shortpreamble = true;
497
498 return;
499 }
500
_rtl_query_shortgi(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)501 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
502 struct ieee80211_sta *sta,
503 struct rtl_tcb_desc *tcb_desc,
504 struct ieee80211_tx_info *info)
505 {
506 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
507 u8 rate_flag = info->control.rates[0].flags;
508 u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
509 tcb_desc->use_shortgi = false;
510
511 if (sta == NULL)
512 return;
513
514 sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
515 sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
516
517 if (!(sta->ht_cap.ht_supported))
518 return;
519
520 if (!sgi_40 && !sgi_20)
521 return;
522
523 if (mac->opmode == NL80211_IFTYPE_STATION)
524 bw_40 = mac->bw_40;
525 else if (mac->opmode == NL80211_IFTYPE_AP ||
526 mac->opmode == NL80211_IFTYPE_ADHOC)
527 bw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
528
529 if (bw_40 && sgi_40)
530 tcb_desc->use_shortgi = true;
531 else if ((bw_40 == false) && sgi_20)
532 tcb_desc->use_shortgi = true;
533
534 if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
535 tcb_desc->use_shortgi = false;
536 }
537
_rtl_query_protection_mode(struct ieee80211_hw * hw,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)538 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
539 struct rtl_tcb_desc *tcb_desc,
540 struct ieee80211_tx_info *info)
541 {
542 struct rtl_priv *rtlpriv = rtl_priv(hw);
543 u8 rate_flag = info->control.rates[0].flags;
544
545 /* Common Settings */
546 tcb_desc->rts_stbc = false;
547 tcb_desc->cts_enable = false;
548 tcb_desc->rts_sc = 0;
549 tcb_desc->rts_bw = false;
550 tcb_desc->rts_use_shortpreamble = false;
551 tcb_desc->rts_use_shortgi = false;
552
553 if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
554 /* Use CTS-to-SELF in protection mode. */
555 tcb_desc->rts_enable = true;
556 tcb_desc->cts_enable = true;
557 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
558 } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
559 /* Use RTS-CTS in protection mode. */
560 tcb_desc->rts_enable = true;
561 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
562 }
563 }
564
_rtl_txrate_selectmode(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc)565 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
566 struct ieee80211_sta *sta,
567 struct rtl_tcb_desc *tcb_desc)
568 {
569 struct rtl_priv *rtlpriv = rtl_priv(hw);
570 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
571 struct rtl_sta_info *sta_entry = NULL;
572 u8 ratr_index = 7;
573
574 if (sta) {
575 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
576 ratr_index = sta_entry->ratr_index;
577 }
578 if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
579 if (mac->opmode == NL80211_IFTYPE_STATION) {
580 tcb_desc->ratr_index = 0;
581 } else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
582 if (tcb_desc->multicast || tcb_desc->broadcast) {
583 tcb_desc->hw_rate =
584 rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
585 tcb_desc->use_driver_rate = 1;
586 } else {
587 /* TODO */
588 }
589 tcb_desc->ratr_index = ratr_index;
590 } else if (mac->opmode == NL80211_IFTYPE_AP) {
591 tcb_desc->ratr_index = ratr_index;
592 }
593 }
594
595 if (rtlpriv->dm.useramask) {
596 /* TODO we will differentiate adhoc and station futrue */
597 if (mac->opmode == NL80211_IFTYPE_STATION) {
598 tcb_desc->mac_id = 0;
599
600 if (mac->mode == WIRELESS_MODE_N_24G)
601 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
602 else if (mac->mode == WIRELESS_MODE_N_5G)
603 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
604 else if (mac->mode & WIRELESS_MODE_G)
605 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
606 else if (mac->mode & WIRELESS_MODE_B)
607 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
608 else if (mac->mode & WIRELESS_MODE_A)
609 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
610 } else if (mac->opmode == NL80211_IFTYPE_AP ||
611 mac->opmode == NL80211_IFTYPE_ADHOC) {
612 if (NULL != sta) {
613 if (sta->aid > 0)
614 tcb_desc->mac_id = sta->aid + 1;
615 else
616 tcb_desc->mac_id = 1;
617 } else {
618 tcb_desc->mac_id = 0;
619 }
620 }
621 }
622
623 }
624
_rtl_query_bandwidth_mode(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc)625 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
626 struct ieee80211_sta *sta,
627 struct rtl_tcb_desc *tcb_desc)
628 {
629 struct rtl_priv *rtlpriv = rtl_priv(hw);
630 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
631
632 tcb_desc->packet_bw = false;
633 if (!sta)
634 return;
635 if (mac->opmode == NL80211_IFTYPE_AP ||
636 mac->opmode == NL80211_IFTYPE_ADHOC) {
637 if (!(sta->ht_cap.ht_supported) ||
638 !(sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
639 return;
640 } else if (mac->opmode == NL80211_IFTYPE_STATION) {
641 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
642 return;
643 }
644 if (tcb_desc->multicast || tcb_desc->broadcast)
645 return;
646
647 /*use legency rate, shall use 20MHz */
648 if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
649 return;
650
651 tcb_desc->packet_bw = true;
652 }
653
_rtl_get_highest_n_rate(struct ieee80211_hw * hw)654 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
655 {
656 struct rtl_priv *rtlpriv = rtl_priv(hw);
657 struct rtl_phy *rtlphy = &(rtlpriv->phy);
658 u8 hw_rate;
659
660 if (get_rf_type(rtlphy) == RF_2T2R)
661 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
662 else
663 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
664
665 return hw_rate;
666 }
667
668 /* mac80211's rate_idx is like this:
669 *
670 * 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
671 *
672 * B/G rate:
673 * (rx_status->flag & RX_FLAG_HT) = 0,
674 * DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
675 *
676 * N rate:
677 * (rx_status->flag & RX_FLAG_HT) = 1,
678 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
679 *
680 * 5G band:rx_status->band == IEEE80211_BAND_5GHZ
681 * A rate:
682 * (rx_status->flag & RX_FLAG_HT) = 0,
683 * DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
684 *
685 * N rate:
686 * (rx_status->flag & RX_FLAG_HT) = 1,
687 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
688 */
rtlwifi_rate_mapping(struct ieee80211_hw * hw,bool isht,u8 desc_rate,bool first_ampdu)689 int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
690 bool isht, u8 desc_rate, bool first_ampdu)
691 {
692 int rate_idx;
693
694 if (false == isht) {
695 if (IEEE80211_BAND_2GHZ == hw->conf.channel->band) {
696 switch (desc_rate) {
697 case DESC92_RATE1M:
698 rate_idx = 0;
699 break;
700 case DESC92_RATE2M:
701 rate_idx = 1;
702 break;
703 case DESC92_RATE5_5M:
704 rate_idx = 2;
705 break;
706 case DESC92_RATE11M:
707 rate_idx = 3;
708 break;
709 case DESC92_RATE6M:
710 rate_idx = 4;
711 break;
712 case DESC92_RATE9M:
713 rate_idx = 5;
714 break;
715 case DESC92_RATE12M:
716 rate_idx = 6;
717 break;
718 case DESC92_RATE18M:
719 rate_idx = 7;
720 break;
721 case DESC92_RATE24M:
722 rate_idx = 8;
723 break;
724 case DESC92_RATE36M:
725 rate_idx = 9;
726 break;
727 case DESC92_RATE48M:
728 rate_idx = 10;
729 break;
730 case DESC92_RATE54M:
731 rate_idx = 11;
732 break;
733 default:
734 rate_idx = 0;
735 break;
736 }
737 } else {
738 switch (desc_rate) {
739 case DESC92_RATE6M:
740 rate_idx = 0;
741 break;
742 case DESC92_RATE9M:
743 rate_idx = 1;
744 break;
745 case DESC92_RATE12M:
746 rate_idx = 2;
747 break;
748 case DESC92_RATE18M:
749 rate_idx = 3;
750 break;
751 case DESC92_RATE24M:
752 rate_idx = 4;
753 break;
754 case DESC92_RATE36M:
755 rate_idx = 5;
756 break;
757 case DESC92_RATE48M:
758 rate_idx = 6;
759 break;
760 case DESC92_RATE54M:
761 rate_idx = 7;
762 break;
763 default:
764 rate_idx = 0;
765 break;
766 }
767 }
768
769 } else {
770
771 switch (desc_rate) {
772 case DESC92_RATEMCS0:
773 rate_idx = 0;
774 break;
775 case DESC92_RATEMCS1:
776 rate_idx = 1;
777 break;
778 case DESC92_RATEMCS2:
779 rate_idx = 2;
780 break;
781 case DESC92_RATEMCS3:
782 rate_idx = 3;
783 break;
784 case DESC92_RATEMCS4:
785 rate_idx = 4;
786 break;
787 case DESC92_RATEMCS5:
788 rate_idx = 5;
789 break;
790 case DESC92_RATEMCS6:
791 rate_idx = 6;
792 break;
793 case DESC92_RATEMCS7:
794 rate_idx = 7;
795 break;
796 case DESC92_RATEMCS8:
797 rate_idx = 8;
798 break;
799 case DESC92_RATEMCS9:
800 rate_idx = 9;
801 break;
802 case DESC92_RATEMCS10:
803 rate_idx = 10;
804 break;
805 case DESC92_RATEMCS11:
806 rate_idx = 11;
807 break;
808 case DESC92_RATEMCS12:
809 rate_idx = 12;
810 break;
811 case DESC92_RATEMCS13:
812 rate_idx = 13;
813 break;
814 case DESC92_RATEMCS14:
815 rate_idx = 14;
816 break;
817 case DESC92_RATEMCS15:
818 rate_idx = 15;
819 break;
820 default:
821 rate_idx = 0;
822 break;
823 }
824 }
825 return rate_idx;
826 }
827 EXPORT_SYMBOL(rtlwifi_rate_mapping);
828
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)829 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
830 struct ieee80211_tx_info *info,
831 struct ieee80211_sta *sta,
832 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
833 {
834 struct rtl_priv *rtlpriv = rtl_priv(hw);
835 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
836 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
837 struct ieee80211_rate *txrate;
838 __le16 fc = hdr->frame_control;
839
840 txrate = ieee80211_get_tx_rate(hw, info);
841 if (txrate)
842 tcb_desc->hw_rate = txrate->hw_value;
843 else
844 tcb_desc->hw_rate = 0;
845
846 if (ieee80211_is_data(fc)) {
847 /*
848 *we set data rate INX 0
849 *in rtl_rc.c if skb is special data or
850 *mgt which need low data rate.
851 */
852
853 /*
854 *So tcb_desc->hw_rate is just used for
855 *special data and mgt frames
856 */
857 if (info->control.rates[0].idx == 0 ||
858 ieee80211_is_nullfunc(fc)) {
859 tcb_desc->use_driver_rate = true;
860 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
861
862 tcb_desc->disable_ratefallback = 1;
863 } else {
864 /*
865 *because hw will nerver use hw_rate
866 *when tcb_desc->use_driver_rate = false
867 *so we never set highest N rate here,
868 *and N rate will all be controlled by FW
869 *when tcb_desc->use_driver_rate = false
870 */
871 if (sta && (sta->ht_cap.ht_supported)) {
872 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
873 } else {
874 if (rtlmac->mode == WIRELESS_MODE_B) {
875 tcb_desc->hw_rate =
876 rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
877 } else {
878 tcb_desc->hw_rate =
879 rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
880 }
881 }
882 }
883
884 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
885 tcb_desc->multicast = 1;
886 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
887 tcb_desc->broadcast = 1;
888
889 _rtl_txrate_selectmode(hw, sta, tcb_desc);
890 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
891 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
892 _rtl_query_shortgi(hw, sta, tcb_desc, info);
893 _rtl_query_protection_mode(hw, tcb_desc, info);
894 } else {
895 tcb_desc->use_driver_rate = true;
896 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
897 tcb_desc->disable_ratefallback = 1;
898 tcb_desc->mac_id = 0;
899 tcb_desc->packet_bw = false;
900 }
901 }
902 EXPORT_SYMBOL(rtl_get_tcb_desc);
903
rtl_action_proc(struct ieee80211_hw * hw,struct sk_buff * skb,u8 is_tx)904 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
905 {
906 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
907 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
908 struct rtl_priv *rtlpriv = rtl_priv(hw);
909 __le16 fc = hdr->frame_control;
910 u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
911 u8 category;
912
913 if (!ieee80211_is_action(fc))
914 return true;
915
916 category = *act;
917 act++;
918 switch (category) {
919 case ACT_CAT_BA:
920 switch (*act) {
921 case ACT_ADDBAREQ:
922 if (mac->act_scanning)
923 return false;
924
925 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
926 "%s ACT_ADDBAREQ From :%pM\n",
927 is_tx ? "Tx" : "Rx", hdr->addr2);
928 break;
929 case ACT_ADDBARSP:
930 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
931 "%s ACT_ADDBARSP From :%pM\n",
932 is_tx ? "Tx" : "Rx", hdr->addr2);
933 break;
934 case ACT_DELBA:
935 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
936 "ACT_ADDBADEL From :%pM\n", hdr->addr2);
937 break;
938 }
939 break;
940 default:
941 break;
942 }
943
944 return true;
945 }
946
947 /*should call before software enc*/
rtl_is_special_data(struct ieee80211_hw * hw,struct sk_buff * skb,u8 is_tx)948 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
949 {
950 struct rtl_priv *rtlpriv = rtl_priv(hw);
951 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
952 __le16 fc = rtl_get_fc(skb);
953 u16 ether_type;
954 u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
955 const struct iphdr *ip;
956
957 if (!ieee80211_is_data(fc))
958 return false;
959
960
961 ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
962 SNAP_SIZE + PROTOC_TYPE_SIZE);
963 ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
964 /* ether_type = ntohs(ether_type); */
965
966 if (ETH_P_IP == ether_type) {
967 if (IPPROTO_UDP == ip->protocol) {
968 struct udphdr *udp = (struct udphdr *)((u8 *) ip +
969 (ip->ihl << 2));
970 if (((((u8 *) udp)[1] == 68) &&
971 (((u8 *) udp)[3] == 67)) ||
972 ((((u8 *) udp)[1] == 67) &&
973 (((u8 *) udp)[3] == 68))) {
974 /*
975 * 68 : UDP BOOTP client
976 * 67 : UDP BOOTP server
977 */
978 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
979 DBG_DMESG, "dhcp %s !!\n",
980 is_tx ? "Tx" : "Rx");
981
982 if (is_tx) {
983 schedule_work(&rtlpriv->
984 works.lps_leave_work);
985 ppsc->last_delaylps_stamp_jiffies =
986 jiffies;
987 }
988
989 return true;
990 }
991 }
992 } else if (ETH_P_ARP == ether_type) {
993 if (is_tx) {
994 schedule_work(&rtlpriv->works.lps_leave_work);
995 ppsc->last_delaylps_stamp_jiffies = jiffies;
996 }
997
998 return true;
999 } else if (ETH_P_PAE == ether_type) {
1000 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1001 "802.1X %s EAPOL pkt!!\n", is_tx ? "Tx" : "Rx");
1002
1003 if (is_tx) {
1004 schedule_work(&rtlpriv->works.lps_leave_work);
1005 ppsc->last_delaylps_stamp_jiffies = jiffies;
1006 }
1007
1008 return true;
1009 } else if (ETH_P_IPV6 == ether_type) {
1010 /* IPv6 */
1011 return true;
1012 }
1013
1014 return false;
1015 }
1016
1017 /*********************************************************
1018 *
1019 * functions called by core.c
1020 *
1021 *********************************************************/
rtl_tx_agg_start(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid,u16 * ssn)1022 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1023 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1024 {
1025 struct rtl_priv *rtlpriv = rtl_priv(hw);
1026 struct rtl_tid_data *tid_data;
1027 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1028 struct rtl_sta_info *sta_entry = NULL;
1029
1030 if (sta == NULL)
1031 return -EINVAL;
1032
1033 if (unlikely(tid >= MAX_TID_COUNT))
1034 return -EINVAL;
1035
1036 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1037 if (!sta_entry)
1038 return -ENXIO;
1039 tid_data = &sta_entry->tids[tid];
1040
1041 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d seq:%d\n",
1042 sta->addr, tid, tid_data->seq_number);
1043
1044 *ssn = tid_data->seq_number;
1045 tid_data->agg.agg_state = RTL_AGG_START;
1046
1047 ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1048
1049 return 0;
1050 }
1051
rtl_tx_agg_stop(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid)1052 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1053 struct ieee80211_sta *sta, u16 tid)
1054 {
1055 struct rtl_priv *rtlpriv = rtl_priv(hw);
1056 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1057 struct rtl_sta_info *sta_entry = NULL;
1058
1059 if (sta == NULL)
1060 return -EINVAL;
1061
1062 if (!sta->addr) {
1063 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1064 return -EINVAL;
1065 }
1066
1067 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1068 sta->addr, tid);
1069
1070 if (unlikely(tid >= MAX_TID_COUNT))
1071 return -EINVAL;
1072
1073 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1074 sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1075
1076 ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1077
1078 return 0;
1079 }
1080
rtl_tx_agg_oper(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid)1081 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1082 struct ieee80211_sta *sta, u16 tid)
1083 {
1084 struct rtl_priv *rtlpriv = rtl_priv(hw);
1085 struct rtl_sta_info *sta_entry = NULL;
1086
1087 if (sta == NULL)
1088 return -EINVAL;
1089
1090 if (!sta->addr) {
1091 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1092 return -EINVAL;
1093 }
1094
1095 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1096 sta->addr, tid);
1097
1098 if (unlikely(tid >= MAX_TID_COUNT))
1099 return -EINVAL;
1100
1101 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1102 sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1103
1104 return 0;
1105 }
1106
1107 /*********************************************************
1108 *
1109 * wq & timer callback functions
1110 *
1111 *********************************************************/
rtl_watchdog_wq_callback(void * data)1112 void rtl_watchdog_wq_callback(void *data)
1113 {
1114 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1115 struct rtl_works,
1116 watchdog_wq);
1117 struct ieee80211_hw *hw = rtlworks->hw;
1118 struct rtl_priv *rtlpriv = rtl_priv(hw);
1119 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1120 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1121 bool busytraffic = false;
1122 bool higher_busytraffic = false;
1123 bool higher_busyrxtraffic = false;
1124 u8 idx, tid;
1125 u32 rx_cnt_inp4eriod = 0;
1126 u32 tx_cnt_inp4eriod = 0;
1127 u32 aver_rx_cnt_inperiod = 0;
1128 u32 aver_tx_cnt_inperiod = 0;
1129 u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1130 u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1131 bool enter_ps = false;
1132
1133 if (is_hal_stop(rtlhal))
1134 return;
1135
1136 /* <1> Determine if action frame is allowed */
1137 if (mac->link_state > MAC80211_NOLINK) {
1138 if (mac->cnt_after_linked < 20)
1139 mac->cnt_after_linked++;
1140 } else {
1141 mac->cnt_after_linked = 0;
1142 }
1143
1144 /*
1145 *<2> to check if traffic busy, if
1146 * busytraffic we don't change channel
1147 */
1148 if (mac->link_state >= MAC80211_LINKED) {
1149
1150 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1151 for (idx = 0; idx <= 2; idx++) {
1152 rtlpriv->link_info.num_rx_in4period[idx] =
1153 rtlpriv->link_info.num_rx_in4period[idx + 1];
1154 rtlpriv->link_info.num_tx_in4period[idx] =
1155 rtlpriv->link_info.num_tx_in4period[idx + 1];
1156 }
1157 rtlpriv->link_info.num_rx_in4period[3] =
1158 rtlpriv->link_info.num_rx_inperiod;
1159 rtlpriv->link_info.num_tx_in4period[3] =
1160 rtlpriv->link_info.num_tx_inperiod;
1161 for (idx = 0; idx <= 3; idx++) {
1162 rx_cnt_inp4eriod +=
1163 rtlpriv->link_info.num_rx_in4period[idx];
1164 tx_cnt_inp4eriod +=
1165 rtlpriv->link_info.num_tx_in4period[idx];
1166 }
1167 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1168 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1169
1170 /* (2) check traffic busy */
1171 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
1172 busytraffic = true;
1173
1174 /* Higher Tx/Rx data. */
1175 if (aver_rx_cnt_inperiod > 4000 ||
1176 aver_tx_cnt_inperiod > 4000) {
1177 higher_busytraffic = true;
1178
1179 /* Extremely high Rx data. */
1180 if (aver_rx_cnt_inperiod > 5000)
1181 higher_busyrxtraffic = true;
1182 }
1183
1184 /* check every tid's tx traffic */
1185 for (tid = 0; tid <= 7; tid++) {
1186 for (idx = 0; idx <= 2; idx++)
1187 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1188 rtlpriv->link_info.tidtx_in4period[tid]
1189 [idx + 1];
1190 rtlpriv->link_info.tidtx_in4period[tid][3] =
1191 rtlpriv->link_info.tidtx_inperiod[tid];
1192
1193 for (idx = 0; idx <= 3; idx++)
1194 tidtx_inp4eriod[tid] +=
1195 rtlpriv->link_info.tidtx_in4period[tid][idx];
1196 aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1197 if (aver_tidtx_inperiod[tid] > 5000)
1198 rtlpriv->link_info.higher_busytxtraffic[tid] =
1199 true;
1200 else
1201 rtlpriv->link_info.higher_busytxtraffic[tid] =
1202 false;
1203 }
1204
1205 if (((rtlpriv->link_info.num_rx_inperiod +
1206 rtlpriv->link_info.num_tx_inperiod) > 8) ||
1207 (rtlpriv->link_info.num_rx_inperiod > 2))
1208 enter_ps = false;
1209 else
1210 enter_ps = true;
1211
1212 /* LeisurePS only work in infra mode. */
1213 if (enter_ps)
1214 rtl_lps_enter(hw);
1215 else
1216 rtl_lps_leave(hw);
1217 }
1218
1219 rtlpriv->link_info.num_rx_inperiod = 0;
1220 rtlpriv->link_info.num_tx_inperiod = 0;
1221 for (tid = 0; tid <= 7; tid++)
1222 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1223
1224 rtlpriv->link_info.busytraffic = busytraffic;
1225 rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1226 rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1227
1228 /* <3> DM */
1229 rtlpriv->cfg->ops->dm_watchdog(hw);
1230 }
1231
rtl_watch_dog_timer_callback(unsigned long data)1232 void rtl_watch_dog_timer_callback(unsigned long data)
1233 {
1234 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1235 struct rtl_priv *rtlpriv = rtl_priv(hw);
1236
1237 queue_delayed_work(rtlpriv->works.rtl_wq,
1238 &rtlpriv->works.watchdog_wq, 0);
1239
1240 mod_timer(&rtlpriv->works.watchdog_timer,
1241 jiffies + MSECS(RTL_WATCH_DOG_TIME));
1242 }
1243
1244 /*********************************************************
1245 *
1246 * frame process functions
1247 *
1248 *********************************************************/
rtl_find_ie(u8 * data,unsigned int len,u8 ie)1249 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1250 {
1251 struct ieee80211_mgmt *mgmt = (void *)data;
1252 u8 *pos, *end;
1253
1254 pos = (u8 *)mgmt->u.beacon.variable;
1255 end = data + len;
1256 while (pos < end) {
1257 if (pos + 2 + pos[1] > end)
1258 return NULL;
1259
1260 if (pos[0] == ie)
1261 return pos;
1262
1263 pos += 2 + pos[1];
1264 }
1265 return NULL;
1266 }
1267
1268 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1269 /* 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)1270 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1271 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1272 {
1273 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1274 struct sk_buff *skb;
1275 struct ieee80211_mgmt *action_frame;
1276
1277 /* 27 = header + category + action + smps mode */
1278 skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1279 if (!skb)
1280 return NULL;
1281
1282 skb_reserve(skb, hw->extra_tx_headroom);
1283 action_frame = (void *)skb_put(skb, 27);
1284 memset(action_frame, 0, 27);
1285 memcpy(action_frame->da, da, ETH_ALEN);
1286 memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1287 memcpy(action_frame->bssid, bssid, ETH_ALEN);
1288 action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1289 IEEE80211_STYPE_ACTION);
1290 action_frame->u.action.category = WLAN_CATEGORY_HT;
1291 action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1292 switch (smps) {
1293 case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1294 case IEEE80211_SMPS_NUM_MODES:/* 4 */
1295 WARN_ON(1);
1296 case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1297 action_frame->u.action.u.ht_smps.smps_control =
1298 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1299 break;
1300 case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1301 action_frame->u.action.u.ht_smps.smps_control =
1302 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1303 break;
1304 case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1305 action_frame->u.action.u.ht_smps.smps_control =
1306 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1307 break;
1308 }
1309
1310 return skb;
1311 }
1312
rtl_send_smps_action(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u8 * da,u8 * bssid,enum ieee80211_smps_mode smps)1313 int rtl_send_smps_action(struct ieee80211_hw *hw,
1314 struct ieee80211_sta *sta, u8 *da, u8 *bssid,
1315 enum ieee80211_smps_mode smps)
1316 {
1317 struct rtl_priv *rtlpriv = rtl_priv(hw);
1318 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1319 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1320 struct sk_buff *skb = rtl_make_smps_action(hw, smps, da, bssid);
1321 struct rtl_tcb_desc tcb_desc;
1322 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1323
1324 if (rtlpriv->mac80211.act_scanning)
1325 goto err_free;
1326
1327 if (!sta)
1328 goto err_free;
1329
1330 if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1331 goto err_free;
1332
1333 if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1334 goto err_free;
1335
1336 /* this is a type = mgmt * stype = action frame */
1337 if (skb) {
1338 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1339 struct rtl_sta_info *sta_entry =
1340 (struct rtl_sta_info *) sta->drv_priv;
1341 sta_entry->mimo_ps = smps;
1342 rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
1343
1344 info->control.rates[0].idx = 0;
1345 info->control.sta = sta;
1346 info->band = hw->conf.channel->band;
1347 rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
1348 }
1349 err_free:
1350 return 0;
1351 }
1352
1353 /*********************************************************
1354 *
1355 * IOT functions
1356 *
1357 *********************************************************/
rtl_chk_vendor_ouisub(struct ieee80211_hw * hw,struct octet_string vendor_ie)1358 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1359 struct octet_string vendor_ie)
1360 {
1361 struct rtl_priv *rtlpriv = rtl_priv(hw);
1362 bool matched = false;
1363 static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1364 static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1365 static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1366 static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1367 static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1368 static u8 racap[] = { 0x00, 0x0c, 0x43 };
1369 static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1370 static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1371
1372 if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1373 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1374 rtlpriv->mac80211.vendor = PEER_ATH;
1375 matched = true;
1376 } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1377 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1378 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1379 rtlpriv->mac80211.vendor = PEER_BROAD;
1380 matched = true;
1381 } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1382 rtlpriv->mac80211.vendor = PEER_RAL;
1383 matched = true;
1384 } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1385 rtlpriv->mac80211.vendor = PEER_CISCO;
1386 matched = true;
1387 } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1388 rtlpriv->mac80211.vendor = PEER_MARV;
1389 matched = true;
1390 }
1391
1392 return matched;
1393 }
1394
rtl_find_221_ie(struct ieee80211_hw * hw,u8 * data,unsigned int len)1395 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1396 unsigned int len)
1397 {
1398 struct ieee80211_mgmt *mgmt = (void *)data;
1399 struct octet_string vendor_ie;
1400 u8 *pos, *end;
1401
1402 pos = (u8 *)mgmt->u.beacon.variable;
1403 end = data + len;
1404 while (pos < end) {
1405 if (pos[0] == 221) {
1406 vendor_ie.length = pos[1];
1407 vendor_ie.octet = &pos[2];
1408 if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1409 return true;
1410 }
1411
1412 if (pos + 2 + pos[1] > end)
1413 return false;
1414
1415 pos += 2 + pos[1];
1416 }
1417 return false;
1418 }
1419
rtl_recognize_peer(struct ieee80211_hw * hw,u8 * data,unsigned int len)1420 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1421 {
1422 struct rtl_priv *rtlpriv = rtl_priv(hw);
1423 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1424 struct ieee80211_hdr *hdr = (void *)data;
1425 u32 vendor = PEER_UNKNOWN;
1426
1427 static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1428 static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1429 static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1430 static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1431 static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1432 static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1433 static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1434 static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1435 static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1436 static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1437 static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1438 static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1439 static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1440 static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1441 static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1442 static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1443
1444 if (mac->opmode != NL80211_IFTYPE_STATION)
1445 return;
1446
1447 if (mac->link_state == MAC80211_NOLINK) {
1448 mac->vendor = PEER_UNKNOWN;
1449 return;
1450 }
1451
1452 if (mac->cnt_after_linked > 2)
1453 return;
1454
1455 /* check if this really is a beacon */
1456 if (!ieee80211_is_beacon(hdr->frame_control))
1457 return;
1458
1459 /* min. beacon length + FCS_LEN */
1460 if (len <= 40 + FCS_LEN)
1461 return;
1462
1463 /* and only beacons from the associated BSSID, please */
1464 if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid))
1465 return;
1466
1467 if (rtl_find_221_ie(hw, data, len))
1468 vendor = mac->vendor;
1469
1470 if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1471 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1472 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1473 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1474 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1475 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1476 vendor == PEER_ATH) {
1477 vendor = PEER_ATH;
1478 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ath find\n");
1479 } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1480 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1481 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1482 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1483 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1484 vendor == PEER_RAL) {
1485 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ral find\n");
1486 vendor = PEER_RAL;
1487 } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1488 vendor == PEER_CISCO) {
1489 vendor = PEER_CISCO;
1490 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>cisco find\n");
1491 } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1492 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1493 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1494 vendor == PEER_BROAD) {
1495 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>broad find\n");
1496 vendor = PEER_BROAD;
1497 } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1498 vendor == PEER_MARV) {
1499 vendor = PEER_MARV;
1500 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>marv find\n");
1501 }
1502
1503 mac->vendor = vendor;
1504 }
1505
1506 /*********************************************************
1507 *
1508 * sysfs functions
1509 *
1510 *********************************************************/
rtl_show_debug_level(struct device * d,struct device_attribute * attr,char * buf)1511 static ssize_t rtl_show_debug_level(struct device *d,
1512 struct device_attribute *attr, char *buf)
1513 {
1514 struct ieee80211_hw *hw = dev_get_drvdata(d);
1515 struct rtl_priv *rtlpriv = rtl_priv(hw);
1516
1517 return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1518 }
1519
rtl_store_debug_level(struct device * d,struct device_attribute * attr,const char * buf,size_t count)1520 static ssize_t rtl_store_debug_level(struct device *d,
1521 struct device_attribute *attr,
1522 const char *buf, size_t count)
1523 {
1524 struct ieee80211_hw *hw = dev_get_drvdata(d);
1525 struct rtl_priv *rtlpriv = rtl_priv(hw);
1526 unsigned long val;
1527 int ret;
1528
1529 ret = strict_strtoul(buf, 0, &val);
1530 if (ret) {
1531 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1532 } else {
1533 rtlpriv->dbg.global_debuglevel = val;
1534 printk(KERN_DEBUG "debuglevel:%x\n",
1535 rtlpriv->dbg.global_debuglevel);
1536 }
1537
1538 return strnlen(buf, count);
1539 }
1540
1541 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1542 rtl_show_debug_level, rtl_store_debug_level);
1543
1544 static struct attribute *rtl_sysfs_entries[] = {
1545
1546 &dev_attr_debug_level.attr,
1547
1548 NULL
1549 };
1550
1551 /*
1552 * "name" is folder name witch will be
1553 * put in device directory like :
1554 * sys/devices/pci0000:00/0000:00:1c.4/
1555 * 0000:06:00.0/rtl_sysfs
1556 */
1557 struct attribute_group rtl_attribute_group = {
1558 .name = "rtlsysfs",
1559 .attrs = rtl_sysfs_entries,
1560 };
1561
1562 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
1563 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
1564 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
1565 MODULE_LICENSE("GPL");
1566 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1567
rtl_core_module_init(void)1568 static int __init rtl_core_module_init(void)
1569 {
1570 if (rtl_rate_control_register())
1571 pr_err("Unable to register rtl_rc, use default RC !!\n");
1572
1573 return 0;
1574 }
1575
rtl_core_module_exit(void)1576 static void __exit rtl_core_module_exit(void)
1577 {
1578 /*RC*/
1579 rtl_rate_control_unregister();
1580 }
1581
1582 module_init(rtl_core_module_init);
1583 module_exit(rtl_core_module_exit);
1584