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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / net / wireless / rtlwifi / base.c
blobd4fdd2a5a7392a24f1a15b47f3f5aaa14d36a7cc
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 "wifi.h"
34 #include "rc.h"
35 #include "base.h"
36 #include "efuse.h"
37 #include "cam.h"
38 #include "ps.h"
39 #include "regd.h"
40
41 /*
42 *NOTICE!!!: This file will be very big, we hsould
43 *keep it clear under follwing roles:
44 *
45 *This file include follwing part, 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
170 u8 rtl_tid_to_ac(struct ieee80211_hw *hw, u8 tid)
171 {
172 return tid_to_ac[tid];
173 }
174
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
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,
305 ("Err BAND %d\n",
306 rtlhal->current_bandtype));
307 }
308 }
309 /* <5> set hw caps */
310 hw->flags = IEEE80211_HW_SIGNAL_DBM |
311 IEEE80211_HW_RX_INCLUDES_FCS |
312 IEEE80211_HW_BEACON_FILTER |
313 IEEE80211_HW_AMPDU_AGGREGATION |
314 IEEE80211_HW_CONNECTION_MONITOR |
315 /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
316 IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
317
318 /* swlps or hwlps has been set in diff chip in init_sw_vars */
319 if (rtlpriv->psc.swctrl_lps)
320 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
321 IEEE80211_HW_PS_NULLFUNC_STACK |
322 /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
323 0;
324
325 hw->wiphy->interface_modes =
326 BIT(NL80211_IFTYPE_AP) |
327 BIT(NL80211_IFTYPE_STATION) |
328 BIT(NL80211_IFTYPE_ADHOC);
329
330 hw->wiphy->rts_threshold = 2347;
331
332 hw->queues = AC_MAX;
333 hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
334
335 /* TODO: Correct this value for our hw */
336 /* TODO: define these hard code value */
337 hw->channel_change_time = 100;
338 hw->max_listen_interval = 10;
339 hw->max_rate_tries = 4;
340 /* hw->max_rates = 1; */
341 hw->sta_data_size = sizeof(struct rtl_sta_info);
342
343 /* <6> mac address */
344 if (is_valid_ether_addr(rtlefuse->dev_addr)) {
345 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
346 } else {
347 u8 rtlmac[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
348 get_random_bytes((rtlmac + (ETH_ALEN - 1)), 1);
349 SET_IEEE80211_PERM_ADDR(hw, rtlmac);
350 }
351
352 }
353
354 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
355 {
356 struct rtl_priv *rtlpriv = rtl_priv(hw);
357
358 /* <1> timer */
359 init_timer(&rtlpriv->works.watchdog_timer);
360 setup_timer(&rtlpriv->works.watchdog_timer,
361 rtl_watch_dog_timer_callback, (unsigned long)hw);
362
363 /* <2> work queue */
364 rtlpriv->works.hw = hw;
365 rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
366 INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
367 (void *)rtl_watchdog_wq_callback);
368 INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
369 (void *)rtl_ips_nic_off_wq_callback);
370 INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
371 (void *)rtl_swlps_wq_callback);
372 INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
373 (void *)rtl_swlps_rfon_wq_callback);
374
375 }
376
377 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
378 {
379 struct rtl_priv *rtlpriv = rtl_priv(hw);
380
381 del_timer_sync(&rtlpriv->works.watchdog_timer);
382
383 cancel_delayed_work(&rtlpriv->works.watchdog_wq);
384 cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
385 cancel_delayed_work(&rtlpriv->works.ps_work);
386 cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
387 }
388
389 void rtl_init_rfkill(struct ieee80211_hw *hw)
390 {
391 struct rtl_priv *rtlpriv = rtl_priv(hw);
392
393 bool radio_state;
394 bool blocked;
395 u8 valid = 0;
396
397 /*set init state to on */
398 rtlpriv->rfkill.rfkill_state = 1;
399 wiphy_rfkill_set_hw_state(hw->wiphy, 0);
400
401 radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
402
403 if (valid) {
404 pr_info("wireless switch is %s\n",
405 rtlpriv->rfkill.rfkill_state ? "on" : "off");
406
407 rtlpriv->rfkill.rfkill_state = radio_state;
408
409 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
410 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
411 }
412
413 wiphy_rfkill_start_polling(hw->wiphy);
414 }
415
416 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
417 {
418 wiphy_rfkill_stop_polling(hw->wiphy);
419 }
420
421 int rtl_init_core(struct ieee80211_hw *hw)
422 {
423 struct rtl_priv *rtlpriv = rtl_priv(hw);
424 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
425
426 /* <1> init mac80211 */
427 _rtl_init_mac80211(hw);
428 rtlmac->hw = hw;
429
430 /* <2> rate control register */
431 hw->rate_control_algorithm = "rtl_rc";
432
433 /*
434 * <3> init CRDA must come after init
435 * mac80211 hw in _rtl_init_mac80211.
436 */
437 if (rtl_regd_init(hw, rtl_reg_notifier)) {
438 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n"));
439 return 1;
440 } else {
441 /* CRDA regd hint must after init CRDA */
442 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
443 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
444 ("regulatory_hint fail\n"));
445 }
446 }
447
448 /* <4> locks */
449 mutex_init(&rtlpriv->locks.conf_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.lps_lock);
456 spin_lock_init(&rtlpriv->locks.waitq_lock);
457 spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
458
459 rtlmac->link_state = MAC80211_NOLINK;
460
461 /* <5> init deferred work */
462 _rtl_init_deferred_work(hw);
463
464 return 0;
465 }
466
467 void rtl_deinit_core(struct ieee80211_hw *hw)
468 {
469 }
470
471 void rtl_init_rx_config(struct ieee80211_hw *hw)
472 {
473 struct rtl_priv *rtlpriv = rtl_priv(hw);
474 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
475
476 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
477 }
478
479 /*********************************************************
480 *
481 * tx information functions
482 *
483 *********************************************************/
484 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
485 struct rtl_tcb_desc *tcb_desc,
486 struct ieee80211_tx_info *info)
487 {
488 struct rtl_priv *rtlpriv = rtl_priv(hw);
489 u8 rate_flag = info->control.rates[0].flags;
490
491 tcb_desc->use_shortpreamble = false;
492
493 /* 1M can only use Long Preamble. 11B spec */
494 if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
495 return;
496 else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
497 tcb_desc->use_shortpreamble = true;
498
499 return;
500 }
501
502 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
503 struct ieee80211_sta *sta,
504 struct rtl_tcb_desc *tcb_desc,
505 struct ieee80211_tx_info *info)
506 {
507 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
508 u8 rate_flag = info->control.rates[0].flags;
509 u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
510 tcb_desc->use_shortgi = false;
511
512 if (sta == NULL)
513 return;
514
515 sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
516 sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
517
518 if (!(sta->ht_cap.ht_supported))
519 return;
520
521 if (!sgi_40 && !sgi_20)
522 return;
523
524 if (mac->opmode == NL80211_IFTYPE_STATION)
525 bw_40 = mac->bw_40;
526 else if (mac->opmode == NL80211_IFTYPE_AP ||
527 mac->opmode == NL80211_IFTYPE_ADHOC)
528 bw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
529
530 if (bw_40 && sgi_40)
531 tcb_desc->use_shortgi = true;
532 else if ((bw_40 == false) && sgi_20)
533 tcb_desc->use_shortgi = true;
534
535 if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
536 tcb_desc->use_shortgi = false;
537 }
538
539 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
540 struct rtl_tcb_desc *tcb_desc,
541 struct ieee80211_tx_info *info)
542 {
543 struct rtl_priv *rtlpriv = rtl_priv(hw);
544 u8 rate_flag = info->control.rates[0].flags;
545
546 /* Common Settings */
547 tcb_desc->rts_stbc = false;
548 tcb_desc->cts_enable = false;
549 tcb_desc->rts_sc = 0;
550 tcb_desc->rts_bw = false;
551 tcb_desc->rts_use_shortpreamble = false;
552 tcb_desc->rts_use_shortgi = false;
553
554 if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
555 /* Use CTS-to-SELF in protection mode. */
556 tcb_desc->rts_enable = true;
557 tcb_desc->cts_enable = true;
558 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
559 } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
560 /* Use RTS-CTS in protection mode. */
561 tcb_desc->rts_enable = true;
562 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
563 }
564 }
565
566 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
567 struct ieee80211_sta *sta,
568 struct rtl_tcb_desc *tcb_desc)
569 {
570 struct rtl_priv *rtlpriv = rtl_priv(hw);
571 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
572 struct rtl_sta_info *sta_entry = NULL;
573 u8 ratr_index = 7;
574
575 if (sta) {
576 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
577 ratr_index = sta_entry->ratr_index;
578 }
579 if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
580 if (mac->opmode == NL80211_IFTYPE_STATION) {
581 tcb_desc->ratr_index = 0;
582 } else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
583 if (tcb_desc->multicast || tcb_desc->broadcast) {
584 tcb_desc->hw_rate =
585 rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
586 tcb_desc->use_driver_rate = 1;
587 } else {
588 /* TODO */
589 }
590 tcb_desc->ratr_index = ratr_index;
591 } else if (mac->opmode == NL80211_IFTYPE_AP) {
592 tcb_desc->ratr_index = ratr_index;
593 }
594 }
595
596 if (rtlpriv->dm.useramask) {
597 /* TODO we will differentiate adhoc and station futrue */
598 if (mac->opmode == NL80211_IFTYPE_STATION) {
599 tcb_desc->mac_id = 0;
600
601 if (mac->mode == WIRELESS_MODE_N_24G)
602 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
603 else if (mac->mode == WIRELESS_MODE_N_5G)
604 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
605 else if (mac->mode & WIRELESS_MODE_G)
606 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
607 else if (mac->mode & WIRELESS_MODE_B)
608 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
609 else if (mac->mode & WIRELESS_MODE_A)
610 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
611 } else if (mac->opmode == NL80211_IFTYPE_AP ||
612 mac->opmode == NL80211_IFTYPE_ADHOC) {
613 if (NULL != sta) {
614 if (sta->aid > 0)
615 tcb_desc->mac_id = sta->aid + 1;
616 else
617 tcb_desc->mac_id = 1;
618 } else {
619 tcb_desc->mac_id = 0;
620 }
621 }
622 }
623
624 }
625
626 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
627 struct ieee80211_sta *sta,
628 struct rtl_tcb_desc *tcb_desc)
629 {
630 struct rtl_priv *rtlpriv = rtl_priv(hw);
631 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
632
633 tcb_desc->packet_bw = false;
634 if (!sta)
635 return;
636 if (mac->opmode == NL80211_IFTYPE_AP ||
637 mac->opmode == NL80211_IFTYPE_ADHOC) {
638 if (!(sta->ht_cap.ht_supported) ||
639 !(sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
640 return;
641 } else if (mac->opmode == NL80211_IFTYPE_STATION) {
642 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
643 return;
644 }
645 if (tcb_desc->multicast || tcb_desc->broadcast)
646 return;
647
648 /*use legency rate, shall use 20MHz */
649 if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
650 return;
651
652 tcb_desc->packet_bw = true;
653 }
654
655 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
656 {
657 struct rtl_priv *rtlpriv = rtl_priv(hw);
658 struct rtl_phy *rtlphy = &(rtlpriv->phy);
659 u8 hw_rate;
660
661 if (get_rf_type(rtlphy) == RF_2T2R)
662 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
663 else
664 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
665
666 return hw_rate;
667 }
668
669 /* mac80211's rate_idx is like this:
670 *
671 * 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
672 *
673 * B/G rate:
674 * (rx_status->flag & RX_FLAG_HT) = 0,
675 * DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
676 *
677 * N rate:
678 * (rx_status->flag & RX_FLAG_HT) = 1,
679 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
680 *
681 * 5G band:rx_status->band == IEEE80211_BAND_5GHZ
682 * A rate:
683 * (rx_status->flag & RX_FLAG_HT) = 0,
684 * DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
685 *
686 * N rate:
687 * (rx_status->flag & RX_FLAG_HT) = 1,
688 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
689 */
690 int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
691 bool isht, u8 desc_rate, bool first_ampdu)
692 {
693 int rate_idx;
694
695 if (false == isht) {
696 if (IEEE80211_BAND_2GHZ == hw->conf.channel->band) {
697 switch (desc_rate) {
698 case DESC92_RATE1M:
699 rate_idx = 0;
700 break;
701 case DESC92_RATE2M:
702 rate_idx = 1;
703 break;
704 case DESC92_RATE5_5M:
705 rate_idx = 2;
706 break;
707 case DESC92_RATE11M:
708 rate_idx = 3;
709 break;
710 case DESC92_RATE6M:
711 rate_idx = 4;
712 break;
713 case DESC92_RATE9M:
714 rate_idx = 5;
715 break;
716 case DESC92_RATE12M:
717 rate_idx = 6;
718 break;
719 case DESC92_RATE18M:
720 rate_idx = 7;
721 break;
722 case DESC92_RATE24M:
723 rate_idx = 8;
724 break;
725 case DESC92_RATE36M:
726 rate_idx = 9;
727 break;
728 case DESC92_RATE48M:
729 rate_idx = 10;
730 break;
731 case DESC92_RATE54M:
732 rate_idx = 11;
733 break;
734 default:
735 rate_idx = 0;
736 break;
737 }
738 } else {
739 switch (desc_rate) {
740 case DESC92_RATE6M:
741 rate_idx = 0;
742 break;
743 case DESC92_RATE9M:
744 rate_idx = 1;
745 break;
746 case DESC92_RATE12M:
747 rate_idx = 2;
748 break;
749 case DESC92_RATE18M:
750 rate_idx = 3;
751 break;
752 case DESC92_RATE24M:
753 rate_idx = 4;
754 break;
755 case DESC92_RATE36M:
756 rate_idx = 5;
757 break;
758 case DESC92_RATE48M:
759 rate_idx = 6;
760 break;
761 case DESC92_RATE54M:
762 rate_idx = 7;
763 break;
764 default:
765 rate_idx = 0;
766 break;
767 }
768 }
769
770 } else {
771
772 switch (desc_rate) {
773 case DESC92_RATEMCS0:
774 rate_idx = 0;
775 break;
776 case DESC92_RATEMCS1:
777 rate_idx = 1;
778 break;
779 case DESC92_RATEMCS2:
780 rate_idx = 2;
781 break;
782 case DESC92_RATEMCS3:
783 rate_idx = 3;
784 break;
785 case DESC92_RATEMCS4:
786 rate_idx = 4;
787 break;
788 case DESC92_RATEMCS5:
789 rate_idx = 5;
790 break;
791 case DESC92_RATEMCS6:
792 rate_idx = 6;
793 break;
794 case DESC92_RATEMCS7:
795 rate_idx = 7;
796 break;
797 case DESC92_RATEMCS8:
798 rate_idx = 8;
799 break;
800 case DESC92_RATEMCS9:
801 rate_idx = 9;
802 break;
803 case DESC92_RATEMCS10:
804 rate_idx = 10;
805 break;
806 case DESC92_RATEMCS11:
807 rate_idx = 11;
808 break;
809 case DESC92_RATEMCS12:
810 rate_idx = 12;
811 break;
812 case DESC92_RATEMCS13:
813 rate_idx = 13;
814 break;
815 case DESC92_RATEMCS14:
816 rate_idx = 14;
817 break;
818 case DESC92_RATEMCS15:
819 rate_idx = 15;
820 break;
821 default:
822 rate_idx = 0;
823 break;
824 }
825 }
826 return rate_idx;
827 }
828 EXPORT_SYMBOL(rtlwifi_rate_mapping);
829
830 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
831 struct ieee80211_tx_info *info,
832 struct ieee80211_sta *sta,
833 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
834 {
835 struct rtl_priv *rtlpriv = rtl_priv(hw);
836 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
837 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
838 struct ieee80211_rate *txrate;
839 __le16 fc = hdr->frame_control;
840
841 txrate = ieee80211_get_tx_rate(hw, info);
842 tcb_desc->hw_rate = txrate->hw_value;
843
844 if (ieee80211_is_data(fc)) {
845 /*
846 *we set data rate INX 0
847 *in rtl_rc.c if skb is special data or
848 *mgt which need low data rate.
849 */
850
851 /*
852 *So tcb_desc->hw_rate is just used for
853 *special data and mgt frames
854 */
855 if (info->control.rates[0].idx == 0 ||
856 ieee80211_is_nullfunc(fc)) {
857 tcb_desc->use_driver_rate = true;
858 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
859
860 tcb_desc->disable_ratefallback = 1;
861 } else {
862 /*
863 *because hw will nerver use hw_rate
864 *when tcb_desc->use_driver_rate = false
865 *so we never set highest N rate here,
866 *and N rate will all be controlled by FW
867 *when tcb_desc->use_driver_rate = false
868 */
869 if (sta && (sta->ht_cap.ht_supported)) {
870 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
871 } else {
872 if (rtlmac->mode == WIRELESS_MODE_B) {
873 tcb_desc->hw_rate =
874 rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
875 } else {
876 tcb_desc->hw_rate =
877 rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
878 }
879 }
880 }
881
882 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
883 tcb_desc->multicast = 1;
884 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
885 tcb_desc->broadcast = 1;
886
887 _rtl_txrate_selectmode(hw, sta, tcb_desc);
888 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
889 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
890 _rtl_query_shortgi(hw, sta, tcb_desc, info);
891 _rtl_query_protection_mode(hw, tcb_desc, info);
892 } else {
893 tcb_desc->use_driver_rate = true;
894 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
895 tcb_desc->disable_ratefallback = 1;
896 tcb_desc->mac_id = 0;
897 tcb_desc->packet_bw = false;
898 }
899 }
900 EXPORT_SYMBOL(rtl_get_tcb_desc);
901
902 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
903 {
904 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
905 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
906 struct rtl_priv *rtlpriv = rtl_priv(hw);
907 __le16 fc = hdr->frame_control;
908 u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
909 u8 category;
910
911 if (!ieee80211_is_action(fc))
912 return true;
913
914 category = *act;
915 act++;
916 switch (category) {
917 case ACT_CAT_BA:
918 switch (*act) {
919 case ACT_ADDBAREQ:
920 if (mac->act_scanning)
921 return false;
922
923 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
924 ("%s ACT_ADDBAREQ From :%pM\n",
925 is_tx ? "Tx" : "Rx", hdr->addr2));
926 break;
927 case ACT_ADDBARSP:
928 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
929 ("%s ACT_ADDBARSP From :%pM\n",
930 is_tx ? "Tx" : "Rx", hdr->addr2));
931 break;
932 case ACT_DELBA:
933 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
934 ("ACT_ADDBADEL From :%pM\n", hdr->addr2));
935 break;
936 }
937 break;
938 default:
939 break;
940 }
941
942 return true;
943 }
944
945 /*should call before software enc*/
946 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
947 {
948 struct rtl_priv *rtlpriv = rtl_priv(hw);
949 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
950 __le16 fc = rtl_get_fc(skb);
951 u16 ether_type;
952 u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
953 const struct iphdr *ip;
954
955 if (!ieee80211_is_data(fc))
956 return false;
957
958
959 ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
960 SNAP_SIZE + PROTOC_TYPE_SIZE);
961 ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
962 /* ether_type = ntohs(ether_type); */
963
964 if (ETH_P_IP == ether_type) {
965 if (IPPROTO_UDP == ip->protocol) {
966 struct udphdr *udp = (struct udphdr *)((u8 *) ip +
967 (ip->ihl << 2));
968 if (((((u8 *) udp)[1] == 68) &&
969 (((u8 *) udp)[3] == 67)) ||
970 ((((u8 *) udp)[1] == 67) &&
971 (((u8 *) udp)[3] == 68))) {
972 /*
973 * 68 : UDP BOOTP client
974 * 67 : UDP BOOTP server
975 */
976 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
977 DBG_DMESG, ("dhcp %s !!\n",
978 (is_tx) ? "Tx" : "Rx"));
979
980 if (is_tx) {
981 rtl_lps_leave(hw);
982 ppsc->last_delaylps_stamp_jiffies =
983 jiffies;
984 }
985
986 return true;
987 }
988 }
989 } else if (ETH_P_ARP == ether_type) {
990 if (is_tx) {
991 rtl_lps_leave(hw);
992 ppsc->last_delaylps_stamp_jiffies = jiffies;
993 }
994
995 return true;
996 } else if (ETH_P_PAE == ether_type) {
997 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
998 ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx"));
999
1000 if (is_tx) {
1001 rtl_lps_leave(hw);
1002 ppsc->last_delaylps_stamp_jiffies = jiffies;
1003 }
1004
1005 return true;
1006 } else if (ETH_P_IPV6 == ether_type) {
1007 /* IPv6 */
1008 return true;
1009 }
1010
1011 return false;
1012 }
1013
1014 /*********************************************************
1015 *
1016 * functions called by core.c
1017 *
1018 *********************************************************/
1019 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1020 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1021 {
1022 struct rtl_priv *rtlpriv = rtl_priv(hw);
1023 struct rtl_tid_data *tid_data;
1024 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1025 struct rtl_sta_info *sta_entry = NULL;
1026
1027 if (sta == NULL)
1028 return -EINVAL;
1029
1030 if (unlikely(tid >= MAX_TID_COUNT))
1031 return -EINVAL;
1032
1033 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1034 if (!sta_entry)
1035 return -ENXIO;
1036 tid_data = &sta_entry->tids[tid];
1037
1038 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1039 ("on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
1040 tid_data->seq_number));
1041
1042 *ssn = tid_data->seq_number;
1043 tid_data->agg.agg_state = RTL_AGG_START;
1044
1045 ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1046
1047 return 0;
1048 }
1049
1050 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1051 struct ieee80211_sta *sta, u16 tid)
1052 {
1053 struct rtl_priv *rtlpriv = rtl_priv(hw);
1054 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1055 struct rtl_sta_info *sta_entry = NULL;
1056
1057 if (sta == NULL)
1058 return -EINVAL;
1059
1060 if (!sta->addr) {
1061 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
1062 return -EINVAL;
1063 }
1064
1065 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1066 ("on ra = %pM tid = %d\n", sta->addr, tid));
1067
1068 if (unlikely(tid >= MAX_TID_COUNT))
1069 return -EINVAL;
1070
1071 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1072 sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1073
1074 ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1075
1076 return 0;
1077 }
1078
1079 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1080 struct ieee80211_sta *sta, u16 tid)
1081 {
1082 struct rtl_priv *rtlpriv = rtl_priv(hw);
1083 struct rtl_sta_info *sta_entry = NULL;
1084
1085 if (sta == NULL)
1086 return -EINVAL;
1087
1088 if (!sta->addr) {
1089 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
1090 return -EINVAL;
1091 }
1092
1093 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1094 ("on ra = %pM tid = %d\n", sta->addr, tid));
1095
1096 if (unlikely(tid >= MAX_TID_COUNT))
1097 return -EINVAL;
1098
1099 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1100 sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1101
1102 return 0;
1103 }
1104
1105 /*********************************************************
1106 *
1107 * wq & timer callback functions
1108 *
1109 *********************************************************/
1110 void rtl_watchdog_wq_callback(void *data)
1111 {
1112 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1113 struct rtl_works,
1114 watchdog_wq);
1115 struct ieee80211_hw *hw = rtlworks->hw;
1116 struct rtl_priv *rtlpriv = rtl_priv(hw);
1117 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1118 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1119 bool busytraffic = false;
1120 bool higher_busytraffic = false;
1121 bool higher_busyrxtraffic = false;
1122 u8 idx, tid;
1123 u32 rx_cnt_inp4eriod = 0;
1124 u32 tx_cnt_inp4eriod = 0;
1125 u32 aver_rx_cnt_inperiod = 0;
1126 u32 aver_tx_cnt_inperiod = 0;
1127 u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1128 u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1129 bool enter_ps = false;
1130
1131 if (is_hal_stop(rtlhal))
1132 return;
1133
1134 /* <1> Determine if action frame is allowed */
1135 if (mac->link_state > MAC80211_NOLINK) {
1136 if (mac->cnt_after_linked < 20)
1137 mac->cnt_after_linked++;
1138 } else {
1139 mac->cnt_after_linked = 0;
1140 }
1141
1142 /*
1143 *<2> to check if traffic busy, if
1144 * busytraffic we don't change channel
1145 */
1146 if (mac->link_state >= MAC80211_LINKED) {
1147
1148 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1149 for (idx = 0; idx <= 2; idx++) {
1150 rtlpriv->link_info.num_rx_in4period[idx] =
1151 rtlpriv->link_info.num_rx_in4period[idx + 1];
1152 rtlpriv->link_info.num_tx_in4period[idx] =
1153 rtlpriv->link_info.num_tx_in4period[idx + 1];
1154 }
1155 rtlpriv->link_info.num_rx_in4period[3] =
1156 rtlpriv->link_info.num_rx_inperiod;
1157 rtlpriv->link_info.num_tx_in4period[3] =
1158 rtlpriv->link_info.num_tx_inperiod;
1159 for (idx = 0; idx <= 3; idx++) {
1160 rx_cnt_inp4eriod +=
1161 rtlpriv->link_info.num_rx_in4period[idx];
1162 tx_cnt_inp4eriod +=
1163 rtlpriv->link_info.num_tx_in4period[idx];
1164 }
1165 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1166 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1167
1168 /* (2) check traffic busy */
1169 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
1170 busytraffic = true;
1171
1172 /* Higher Tx/Rx data. */
1173 if (aver_rx_cnt_inperiod > 4000 ||
1174 aver_tx_cnt_inperiod > 4000) {
1175 higher_busytraffic = true;
1176
1177 /* Extremely high Rx data. */
1178 if (aver_rx_cnt_inperiod > 5000)
1179 higher_busyrxtraffic = true;
1180 }
1181
1182 /* check every tid's tx traffic */
1183 for (tid = 0; tid <= 7; tid++) {
1184 for (idx = 0; idx <= 2; idx++)
1185 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1186 rtlpriv->link_info.tidtx_in4period[tid]
1187 [idx + 1];
1188 rtlpriv->link_info.tidtx_in4period[tid][3] =
1189 rtlpriv->link_info.tidtx_inperiod[tid];
1190
1191 for (idx = 0; idx <= 3; idx++)
1192 tidtx_inp4eriod[tid] +=
1193 rtlpriv->link_info.tidtx_in4period[tid][idx];
1194 aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1195 if (aver_tidtx_inperiod[tid] > 5000)
1196 rtlpriv->link_info.higher_busytxtraffic[tid] =
1197 true;
1198 else
1199 rtlpriv->link_info.higher_busytxtraffic[tid] =
1200 false;
1201 }
1202
1203 if (((rtlpriv->link_info.num_rx_inperiod +
1204 rtlpriv->link_info.num_tx_inperiod) > 8) ||
1205 (rtlpriv->link_info.num_rx_inperiod > 2))
1206 enter_ps = false;
1207 else
1208 enter_ps = true;
1209
1210 /* LeisurePS only work in infra mode. */
1211 if (enter_ps)
1212 rtl_lps_enter(hw);
1213 else
1214 rtl_lps_leave(hw);
1215 }
1216
1217 rtlpriv->link_info.num_rx_inperiod = 0;
1218 rtlpriv->link_info.num_tx_inperiod = 0;
1219 for (tid = 0; tid <= 7; tid++)
1220 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1221
1222 rtlpriv->link_info.busytraffic = busytraffic;
1223 rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1224 rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1225
1226 /* <3> DM */
1227 rtlpriv->cfg->ops->dm_watchdog(hw);
1228 }
1229
1230 void rtl_watch_dog_timer_callback(unsigned long data)
1231 {
1232 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1233 struct rtl_priv *rtlpriv = rtl_priv(hw);
1234
1235 queue_delayed_work(rtlpriv->works.rtl_wq,
1236 &rtlpriv->works.watchdog_wq, 0);
1237
1238 mod_timer(&rtlpriv->works.watchdog_timer,
1239 jiffies + MSECS(RTL_WATCH_DOG_TIME));
1240 }
1241
1242 /*********************************************************
1243 *
1244 * frame process functions
1245 *
1246 *********************************************************/
1247 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1248 {
1249 struct ieee80211_mgmt *mgmt = (void *)data;
1250 u8 *pos, *end;
1251
1252 pos = (u8 *)mgmt->u.beacon.variable;
1253 end = data + len;
1254 while (pos < end) {
1255 if (pos + 2 + pos[1] > end)
1256 return NULL;
1257
1258 if (pos[0] == ie)
1259 return pos;
1260
1261 pos += 2 + pos[1];
1262 }
1263 return NULL;
1264 }
1265
1266 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1267 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
1268 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1269 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1270 {
1271 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1272 struct sk_buff *skb;
1273 struct ieee80211_mgmt *action_frame;
1274
1275 /* 27 = header + category + action + smps mode */
1276 skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1277 if (!skb)
1278 return NULL;
1279
1280 skb_reserve(skb, hw->extra_tx_headroom);
1281 action_frame = (void *)skb_put(skb, 27);
1282 memset(action_frame, 0, 27);
1283 memcpy(action_frame->da, da, ETH_ALEN);
1284 memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1285 memcpy(action_frame->bssid, bssid, ETH_ALEN);
1286 action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1287 IEEE80211_STYPE_ACTION);
1288 action_frame->u.action.category = WLAN_CATEGORY_HT;
1289 action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1290 switch (smps) {
1291 case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1292 case IEEE80211_SMPS_NUM_MODES:/* 4 */
1293 WARN_ON(1);
1294 case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1295 action_frame->u.action.u.ht_smps.smps_control =
1296 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1297 break;
1298 case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1299 action_frame->u.action.u.ht_smps.smps_control =
1300 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1301 break;
1302 case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1303 action_frame->u.action.u.ht_smps.smps_control =
1304 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1305 break;
1306 }
1307
1308 return skb;
1309 }
1310
1311 int rtl_send_smps_action(struct ieee80211_hw *hw,
1312 struct ieee80211_sta *sta, u8 *da, u8 *bssid,
1313 enum ieee80211_smps_mode smps)
1314 {
1315 struct rtl_priv *rtlpriv = rtl_priv(hw);
1316 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1317 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1318 struct sk_buff *skb = rtl_make_smps_action(hw, smps, da, bssid);
1319 struct rtl_tcb_desc tcb_desc;
1320 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1321
1322 if (rtlpriv->mac80211.act_scanning)
1323 goto err_free;
1324
1325 if (!sta)
1326 goto err_free;
1327
1328 if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1329 goto err_free;
1330
1331 if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1332 goto err_free;
1333
1334 /* this is a type = mgmt * stype = action frame */
1335 if (skb) {
1336 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1337 struct rtl_sta_info *sta_entry =
1338 (struct rtl_sta_info *) sta->drv_priv;
1339 sta_entry->mimo_ps = smps;
1340 rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
1341
1342 info->control.rates[0].idx = 0;
1343 info->control.sta = sta;
1344 info->band = hw->conf.channel->band;
1345 rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
1346 }
1347 err_free:
1348 return 0;
1349 }
1350
1351 /*********************************************************
1352 *
1353 * IOT functions
1354 *
1355 *********************************************************/
1356 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1357 struct octet_string vendor_ie)
1358 {
1359 struct rtl_priv *rtlpriv = rtl_priv(hw);
1360 bool matched = false;
1361 static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1362 static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1363 static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1364 static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1365 static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1366 static u8 racap[] = { 0x00, 0x0c, 0x43 };
1367 static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1368 static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1369
1370 if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1371 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1372 rtlpriv->mac80211.vendor = PEER_ATH;
1373 matched = true;
1374 } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1375 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1376 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1377 rtlpriv->mac80211.vendor = PEER_BROAD;
1378 matched = true;
1379 } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1380 rtlpriv->mac80211.vendor = PEER_RAL;
1381 matched = true;
1382 } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1383 rtlpriv->mac80211.vendor = PEER_CISCO;
1384 matched = true;
1385 } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1386 rtlpriv->mac80211.vendor = PEER_MARV;
1387 matched = true;
1388 }
1389
1390 return matched;
1391 }
1392
1393 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1394 unsigned int len)
1395 {
1396 struct ieee80211_mgmt *mgmt = (void *)data;
1397 struct octet_string vendor_ie;
1398 u8 *pos, *end;
1399
1400 pos = (u8 *)mgmt->u.beacon.variable;
1401 end = data + len;
1402 while (pos < end) {
1403 if (pos[0] == 221) {
1404 vendor_ie.length = pos[1];
1405 vendor_ie.octet = &pos[2];
1406 if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1407 return true;
1408 }
1409
1410 if (pos + 2 + pos[1] > end)
1411 return false;
1412
1413 pos += 2 + pos[1];
1414 }
1415 return false;
1416 }
1417
1418 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1419 {
1420 struct rtl_priv *rtlpriv = rtl_priv(hw);
1421 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1422 struct ieee80211_hdr *hdr = (void *)data;
1423 u32 vendor = PEER_UNKNOWN;
1424
1425 static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1426 static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1427 static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1428 static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1429 static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1430 static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1431 static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1432 static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1433 static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1434 static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1435 static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1436 static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1437 static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1438 static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1439 static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1440 static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1441
1442 if (mac->opmode != NL80211_IFTYPE_STATION)
1443 return;
1444
1445 if (mac->link_state == MAC80211_NOLINK) {
1446 mac->vendor = PEER_UNKNOWN;
1447 return;
1448 }
1449
1450 if (mac->cnt_after_linked > 2)
1451 return;
1452
1453 /* check if this really is a beacon */
1454 if (!ieee80211_is_beacon(hdr->frame_control))
1455 return;
1456
1457 /* min. beacon length + FCS_LEN */
1458 if (len <= 40 + FCS_LEN)
1459 return;
1460
1461 /* and only beacons from the associated BSSID, please */
1462 if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid))
1463 return;
1464
1465 if (rtl_find_221_ie(hw, data, len))
1466 vendor = mac->vendor;
1467
1468 if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1469 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1470 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1471 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1472 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1473 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1474 vendor == PEER_ATH) {
1475 vendor = PEER_ATH;
1476 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>ath find\n"));
1477 } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1478 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1479 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1480 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1481 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1482 vendor == PEER_RAL) {
1483 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>ral findn\n"));
1484 vendor = PEER_RAL;
1485 } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1486 vendor == PEER_CISCO) {
1487 vendor = PEER_CISCO;
1488 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>cisco find\n"));
1489 } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1490 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1491 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1492 vendor == PEER_BROAD) {
1493 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>broad find\n"));
1494 vendor = PEER_BROAD;
1495 } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1496 vendor == PEER_MARV) {
1497 vendor = PEER_MARV;
1498 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>marv find\n"));
1499 }
1500
1501 mac->vendor = vendor;
1502 }
1503
1504 /*********************************************************
1505 *
1506 * sysfs functions
1507 *
1508 *********************************************************/
1509 static ssize_t rtl_show_debug_level(struct device *d,
1510 struct device_attribute *attr, char *buf)
1511 {
1512 struct ieee80211_hw *hw = dev_get_drvdata(d);
1513 struct rtl_priv *rtlpriv = rtl_priv(hw);
1514
1515 return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1516 }
1517
1518 static ssize_t rtl_store_debug_level(struct device *d,
1519 struct device_attribute *attr,
1520 const char *buf, size_t count)
1521 {
1522 struct ieee80211_hw *hw = dev_get_drvdata(d);
1523 struct rtl_priv *rtlpriv = rtl_priv(hw);
1524 unsigned long val;
1525 int ret;
1526
1527 ret = strict_strtoul(buf, 0, &val);
1528 if (ret) {
1529 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1530 } else {
1531 rtlpriv->dbg.global_debuglevel = val;
1532 printk(KERN_DEBUG "debuglevel:%x\n",
1533 rtlpriv->dbg.global_debuglevel);
1534 }
1535
1536 return strnlen(buf, count);
1537 }
1538
1539 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1540 rtl_show_debug_level, rtl_store_debug_level);
1541
1542 static struct attribute *rtl_sysfs_entries[] = {
1543
1544 &dev_attr_debug_level.attr,
1545
1546 NULL
1547 };
1548
1549 /*
1550 * "name" is folder name witch will be
1551 * put in device directory like :
1552 * sys/devices/pci0000:00/0000:00:1c.4/
1553 * 0000:06:00.0/rtl_sysfs
1554 */
1555 struct attribute_group rtl_attribute_group = {
1556 .name = "rtlsysfs",
1557 .attrs = rtl_sysfs_entries,
1558 };
1559
1560 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
1561 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
1562 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
1563 MODULE_LICENSE("GPL");
1564 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1565
1566 static int __init rtl_core_module_init(void)
1567 {
1568 if (rtl_rate_control_register())
1569 pr_err("Unable to register rtl_rc, use default RC !!\n");
1570
1571 return 0;
1572 }
1573
1574 static void __exit rtl_core_module_exit(void)
1575 {
1576 /*RC*/
1577 rtl_rate_control_unregister();
1578 }
1579
1580 module_init(rtl_core_module_init);
1581 module_exit(rtl_core_module_exit);
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