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ath9k: do not limit the chainmask to 1 for legacy mode
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / rtlwifi / base.c
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0c817338
LF		 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#include <linux/ip.h>
31#include "wifi.h"
32#include "rc.h"
33#include "base.h"
34#include "efuse.h"
35#include "cam.h"
36#include "ps.h"
37#include "regd.h"
38
39/*
40 *NOTICE!!!: This file will be very big, we hsould
41 *keep it clear under follwing roles:
42 *
43 *This file include follwing part, so, if you add new
44 *functions into this file, please check which part it
45 *should includes. or check if you should add new part
46 *for this file:
47 *
48 *1) mac80211 init functions
49 *2) tx information functions
50 *3) functions called by core.c
51 *4) wq & timer callback functions
52 *5) frame process functions
53 *6) sysfs functions
54 *7) ...
55 */
56
57/*********************************************************
58 *
59 * mac80211 init functions
60 *
61 *********************************************************/
62static struct ieee80211_channel rtl_channeltable[] = {
63 {.center_freq = 2412, .hw_value = 1,},
64 {.center_freq = 2417, .hw_value = 2,},
65 {.center_freq = 2422, .hw_value = 3,},
66 {.center_freq = 2427, .hw_value = 4,},
67 {.center_freq = 2432, .hw_value = 5,},
68 {.center_freq = 2437, .hw_value = 6,},
69 {.center_freq = 2442, .hw_value = 7,},
70 {.center_freq = 2447, .hw_value = 8,},
71 {.center_freq = 2452, .hw_value = 9,},
72 {.center_freq = 2457, .hw_value = 10,},
73 {.center_freq = 2462, .hw_value = 11,},
74 {.center_freq = 2467, .hw_value = 12,},
75 {.center_freq = 2472, .hw_value = 13,},
76 {.center_freq = 2484, .hw_value = 14,},
77};
78
79static struct ieee80211_rate rtl_ratetable[] = {
80 {.bitrate = 10, .hw_value = 0x00,},
81 {.bitrate = 20, .hw_value = 0x01,},
82 {.bitrate = 55, .hw_value = 0x02,},
83 {.bitrate = 110, .hw_value = 0x03,},
84 {.bitrate = 60, .hw_value = 0x04,},
85 {.bitrate = 90, .hw_value = 0x05,},
86 {.bitrate = 120, .hw_value = 0x06,},
87 {.bitrate = 180, .hw_value = 0x07,},
88 {.bitrate = 240, .hw_value = 0x08,},
89 {.bitrate = 360, .hw_value = 0x09,},
90 {.bitrate = 480, .hw_value = 0x0a,},
91 {.bitrate = 540, .hw_value = 0x0b,},
92};
93
94static const struct ieee80211_supported_band rtl_band_2ghz = {
95 .band = IEEE80211_BAND_2GHZ,
96
97 .channels = rtl_channeltable,
98 .n_channels = ARRAY_SIZE(rtl_channeltable),
99
100 .bitrates = rtl_ratetable,
101 .n_bitrates = ARRAY_SIZE(rtl_ratetable),
102
103 .ht_cap = {0},
104};
105
106static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
107 struct ieee80211_sta_ht_cap *ht_cap)
108{
109 struct rtl_priv *rtlpriv = rtl_priv(hw);
110 struct rtl_phy *rtlphy = &(rtlpriv->phy);
111
112 ht_cap->ht_supported = true;
113 ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
114 IEEE80211_HT_CAP_SGI_40 |
115 IEEE80211_HT_CAP_SGI_20 |
116 IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
117
118 /*
119 *Maximum length of AMPDU that the STA can receive.
120 *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
121 */
122 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
123
124 /*Minimum MPDU start spacing , */
125 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
126
127 ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
128
129 /*
130 *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
131 *base on ant_num
132 *rx_mask: RX mask
133 *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
134 *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
135 *if rx_ant >=3 rx_mask[2]=0xff;
136 *if BW_40 rx_mask[4]=0x01;
137 *highest supported RX rate
138 */
139 if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
140
141 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T2R or 2T2R\n"));
142
143 ht_cap->mcs.rx_mask[0] = 0xFF;
144 ht_cap->mcs.rx_mask[1] = 0xFF;
145 ht_cap->mcs.rx_mask[4] = 0x01;
146
147 ht_cap->mcs.rx_highest = MAX_BIT_RATE_40MHZ_MCS15;
148 } else if (get_rf_type(rtlphy) == RF_1T1R) {
149
150 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T1R\n"));
151
152 ht_cap->mcs.rx_mask[0] = 0xFF;
153 ht_cap->mcs.rx_mask[1] = 0x00;
154 ht_cap->mcs.rx_mask[4] = 0x01;
155
156 ht_cap->mcs.rx_highest = MAX_BIT_RATE_40MHZ_MCS7;
157 }
158}
159
160static void _rtl_init_mac80211(struct ieee80211_hw *hw)
161{
162 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
163 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
164 struct ieee80211_supported_band *sband;
165
166 /* <1> use mac->bands as mem for hw->wiphy->bands */
167 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
168
169 /*
170 * <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
171 * to default value(1T1R)
172 */
173 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
174 sizeof(struct ieee80211_supported_band));
175
176 /* <3> init ht cap base on ant_num */
177 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
178
179 /* <4> set mac->sband to wiphy->sband */
180 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
181
182 /* <5> set hw caps */
183 hw->flags = IEEE80211_HW_SIGNAL_DBM |
184 IEEE80211_HW_RX_INCLUDES_FCS |
185 IEEE80211_HW_BEACON_FILTER | IEEE80211_HW_AMPDU_AGGREGATION | /*PS*/
186 /*IEEE80211_HW_SUPPORTS_PS | */
187 /*IEEE80211_HW_PS_NULLFUNC_STACK | */
188 /*IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
189 IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
190
191 hw->wiphy->interface_modes =
192 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
193
194 hw->wiphy->rts_threshold = 2347;
195
196 hw->queues = AC_MAX;
197 hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
198
199 /* TODO: Correct this value for our hw */
200 /* TODO: define these hard code value */
201 hw->channel_change_time = 100;
202 hw->max_listen_interval = 5;
203 hw->max_rate_tries = 4;
204 /* hw->max_rates = 1; */
205
206 /* <6> mac address */
207 if (is_valid_ether_addr(rtlefuse->dev_addr)) {
208 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
209 } else {
210 u8 rtlmac[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
211 get_random_bytes((rtlmac + (ETH_ALEN - 1)), 1);
212 SET_IEEE80211_PERM_ADDR(hw, rtlmac);
213 }
214
215}
216
217static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
218{
219 struct rtl_priv *rtlpriv = rtl_priv(hw);
220
221 /* <1> timer */
222 init_timer(&rtlpriv->works.watchdog_timer);
223 setup_timer(&rtlpriv->works.watchdog_timer,
224 rtl_watch_dog_timer_callback, (unsigned long)hw);
225
226 /* <2> work queue */
227 rtlpriv->works.hw = hw;
228 rtlpriv->works.rtl_wq = create_workqueue(rtlpriv->cfg->name);
229 INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
230 (void *)rtl_watchdog_wq_callback);
231 INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
232 (void *)rtl_ips_nic_off_wq_callback);
233
234}
235
236void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
237{
238 struct rtl_priv *rtlpriv = rtl_priv(hw);
239
240 del_timer_sync(&rtlpriv->works.watchdog_timer);
241
242 cancel_delayed_work(&rtlpriv->works.watchdog_wq);
243 cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
244}
245
246void rtl_init_rfkill(struct ieee80211_hw *hw)
247{
248 struct rtl_priv *rtlpriv = rtl_priv(hw);
249
250 bool radio_state;
251 bool blocked;
252 u8 valid = 0;
253
254 /*set init state to rf on */
255 rtlpriv->rfkill.rfkill_state = 1;
256
257 radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
258
259 if (valid) {
260 RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
261 (KERN_INFO "wireless switch is %s\n",
262 rtlpriv->rfkill.rfkill_state ? "on" : "off"));
263
264 rtlpriv->rfkill.rfkill_state = radio_state;
265
266 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
267 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
268 }
269
270 wiphy_rfkill_start_polling(hw->wiphy);
271}
272
273void rtl_deinit_rfkill(struct ieee80211_hw *hw)
274{
275 wiphy_rfkill_stop_polling(hw->wiphy);
276}
277
278int rtl_init_core(struct ieee80211_hw *hw)
279{
280 struct rtl_priv *rtlpriv = rtl_priv(hw);
281 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
282
283 /* <1> init mac80211 */
284 _rtl_init_mac80211(hw);
285 rtlmac->hw = hw;
286
287 /* <2> rate control register */
288 if (rtl_rate_control_register()) {
289 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
290 ("rtl: Unable to register rtl_rc,"
291 "use default RC !!\n"));
292 } else {
293 hw->rate_control_algorithm = "rtl_rc";
294 }
295
296 /*
297 * <3> init CRDA must come after init
298 * mac80211 hw in _rtl_init_mac80211.
299 */
300 if (rtl_regd_init(hw, rtl_reg_notifier)) {
301 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n"));
302 return 1;
303 } else {
304 /* CRDA regd hint must after init CRDA */
305 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
306 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
307 ("regulatory_hint fail\n"));
308 }
309 }
310
311 /* <4> locks */
8a09d6d8 312 mutex_init(&rtlpriv->locks.conf_mutex);
d704300f 313 spin_lock_init(&rtlpriv->locks.ips_lock);
0c817338
LF		 314 spin_lock_init(&rtlpriv->locks.irq_th_lock);
315 spin_lock_init(&rtlpriv->locks.h2c_lock);
316 spin_lock_init(&rtlpriv->locks.rf_ps_lock);
317 spin_lock_init(&rtlpriv->locks.rf_lock);
318 spin_lock_init(&rtlpriv->locks.lps_lock);
319
320 rtlmac->link_state = MAC80211_NOLINK;
321
322 /* <5> init deferred work */
323 _rtl_init_deferred_work(hw);
324
325 return 0;
326}
327
328void rtl_deinit_core(struct ieee80211_hw *hw)
329{
330 /*RC*/
331 rtl_rate_control_unregister();
332}
333
334void rtl_init_rx_config(struct ieee80211_hw *hw)
335{
336 struct rtl_priv *rtlpriv = rtl_priv(hw);
337 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
338
339 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
340 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_MGT_FILTER,
341 (u8 *) (&mac->rx_mgt_filter));
342 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CTRL_FILTER,
343 (u8 *) (&mac->rx_ctrl_filter));
344 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_DATA_FILTER,
345 (u8 *) (&mac->rx_data_filter));
346}
347
348/*********************************************************
349 *
350 * tx information functions
351 *
352 *********************************************************/
353static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
354 struct rtl_tcb_desc *tcb_desc,
355 struct ieee80211_tx_info *info)
356{
357 struct rtl_priv *rtlpriv = rtl_priv(hw);
358 u8 rate_flag = info->control.rates[0].flags;
359
360 tcb_desc->use_shortpreamble = false;
361
362 /* 1M can only use Long Preamble. 11B spec */
363 if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
364 return;
365 else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
366 tcb_desc->use_shortpreamble = true;
367
368 return;
369}
370
371static void _rtl_query_shortgi(struct ieee80211_hw *hw,
372 struct rtl_tcb_desc *tcb_desc,
373 struct ieee80211_tx_info *info)
374{
375 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
376 u8 rate_flag = info->control.rates[0].flags;
377
378 tcb_desc->use_shortgi = false;
379
380 if (!mac->ht_enable)
381 return;
382
383 if (!mac->sgi_40 && !mac->sgi_20)
384 return;
385
386 if ((mac->bw_40 == true) && mac->sgi_40)
387 tcb_desc->use_shortgi = true;
388 else if ((mac->bw_40 == false) && mac->sgi_20)
389 tcb_desc->use_shortgi = true;
390
391 if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
392 tcb_desc->use_shortgi = false;
393
394}
395
396static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
397 struct rtl_tcb_desc *tcb_desc,
398 struct ieee80211_tx_info *info)
399{
400 struct rtl_priv *rtlpriv = rtl_priv(hw);
401 u8 rate_flag = info->control.rates[0].flags;
402
403 /* Common Settings */
404 tcb_desc->b_rts_stbc = false;
405 tcb_desc->b_cts_enable = false;
406 tcb_desc->rts_sc = 0;
407 tcb_desc->b_rts_bw = false;
408 tcb_desc->b_rts_use_shortpreamble = false;
409 tcb_desc->b_rts_use_shortgi = false;
410
411 if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
412 /* Use CTS-to-SELF in protection mode. */
413 tcb_desc->b_rts_enable = true;
414 tcb_desc->b_cts_enable = true;
415 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
416 } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
417 /* Use RTS-CTS in protection mode. */
418 tcb_desc->b_rts_enable = true;
419 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
420 }
421
422}
423
424static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
425 struct rtl_tcb_desc *tcb_desc)
426{
427 struct rtl_priv *rtlpriv = rtl_priv(hw);
428 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
429
430 if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
431 if (mac->opmode == NL80211_IFTYPE_STATION)
432 tcb_desc->ratr_index = 0;
433 else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
434 if (tcb_desc->b_multicast || tcb_desc->b_broadcast) {
435 tcb_desc->hw_rate =
436 rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
437 tcb_desc->use_driver_rate = 1;
438 } else {
439 /* TODO */
440 }
441 }
442 }
443
444 if (rtlpriv->dm.b_useramask) {
445 /* TODO we will differentiate adhoc and station futrue */
446 tcb_desc->mac_id = 0;
447
448 if ((mac->mode == WIRELESS_MODE_N_24G) ||
449 (mac->mode == WIRELESS_MODE_N_5G)) {
450 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
451 } else if (mac->mode & WIRELESS_MODE_G) {
452 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
453 } else if (mac->mode & WIRELESS_MODE_B) {
454 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
455 }
456 }
457
458}
459
460static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
461 struct rtl_tcb_desc *tcb_desc)
462{
463 struct rtl_priv *rtlpriv = rtl_priv(hw);
464 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
465
466 tcb_desc->b_packet_bw = false;
467
468 if (!mac->bw_40 || !mac->ht_enable)
469 return;
470
471 if (tcb_desc->b_multicast || tcb_desc->b_broadcast)
472 return;
473
474 /*use legency rate, shall use 20MHz */
475 if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
476 return;
477
478 tcb_desc->b_packet_bw = true;
479}
480
481static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
482{
483 struct rtl_priv *rtlpriv = rtl_priv(hw);
484 struct rtl_phy *rtlphy = &(rtlpriv->phy);
485 u8 hw_rate;
486
487 if (get_rf_type(rtlphy) == RF_2T2R)
488 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
489 else
490 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
491
492 return hw_rate;
493}
494
495void rtl_get_tcb_desc(struct ieee80211_hw *hw,
496 struct ieee80211_tx_info *info,
497 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
498{
499 struct rtl_priv *rtlpriv = rtl_priv(hw);
500 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
501 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
502 struct ieee80211_rate *txrate;
503 u16 fc = le16_to_cpu(hdr->frame_control);
504
505 memset(tcb_desc, 0, sizeof(struct rtl_tcb_desc));
506
507 if (ieee80211_is_data(fc)) {
508 txrate = ieee80211_get_tx_rate(hw, info);
509 tcb_desc->hw_rate = txrate->hw_value;
510
511 /*
512 *we set data rate RTL_RC_CCK_RATE1M
513 *in rtl_rc.c if skb is special data or
514 *mgt which need low data rate.
515 */
516
517 /*
518 *So tcb_desc->hw_rate is just used for
519 *special data and mgt frames
520 */
521 if (tcb_desc->hw_rate < rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M]) {
522 tcb_desc->use_driver_rate = true;
523 tcb_desc->ratr_index = 7;
524
525 tcb_desc->hw_rate =
526 rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
527 tcb_desc->disable_ratefallback = 1;
528 } else {
529 /*
530 *because hw will nerver use hw_rate
531 *when tcb_desc->use_driver_rate = false
532 *so we never set highest N rate here,
533 *and N rate will all be controled by FW
534 *when tcb_desc->use_driver_rate = false
535 */
536 if (rtlmac->ht_enable) {
537 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
538 } else {
539 if (rtlmac->mode == WIRELESS_MODE_B) {
540 tcb_desc->hw_rate =
541 rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
542 } else {
543 tcb_desc->hw_rate =
544 rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
545 }
546 }
547 }
548
549 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
550 tcb_desc->b_multicast = 1;
551 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
552 tcb_desc->b_broadcast = 1;
553
554 _rtl_txrate_selectmode(hw, tcb_desc);
555 _rtl_query_bandwidth_mode(hw, tcb_desc);
556 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
557 _rtl_query_shortgi(hw, tcb_desc, info);
558 _rtl_query_protection_mode(hw, tcb_desc, info);
559 } else {
560 tcb_desc->use_driver_rate = true;
561 tcb_desc->ratr_index = 7;
562 tcb_desc->disable_ratefallback = 1;
563 tcb_desc->mac_id = 0;
564
565 tcb_desc->hw_rate = rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
566 }
567}
568EXPORT_SYMBOL(rtl_get_tcb_desc);
569
570bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb)
571{
572 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
573 struct rtl_priv *rtlpriv = rtl_priv(hw);
574 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
575 u16 fc = le16_to_cpu(hdr->frame_control);
576
577 if (ieee80211_is_auth(fc)) {
578 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n"));
579 rtl_ips_nic_on(hw);
580
581 mac->link_state = MAC80211_LINKING;
582 }
583
584 return true;
585}
586
587bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
588{
589 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
590 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
591 struct rtl_priv *rtlpriv = rtl_priv(hw);
592 u16 fc = le16_to_cpu(hdr->frame_control);
593 u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
594 u8 category;
595
596 if (!ieee80211_is_action(fc))
597 return true;
598
599 category = *act;
600 act++;
601 switch (category) {
602 case ACT_CAT_BA:
603 switch (*act) {
604 case ACT_ADDBAREQ:
605 if (mac->act_scanning)
606 return false;
607
608 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
609 ("%s ACT_ADDBAREQ From :" MAC_FMT "\n",
610 is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
611 break;
612 case ACT_ADDBARSP:
613 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
614 ("%s ACT_ADDBARSP From :" MAC_FMT "\n",
615 is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
616 break;
617 case ACT_DELBA:
618 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
619 ("ACT_ADDBADEL From :" MAC_FMT "\n",
620 MAC_ARG(hdr->addr2)));
621 break;
622 }
623 break;
624 default:
625 break;
626 }
627
628 return true;
629}
630
631/*should call before software enc*/
632u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
633{
634 struct rtl_priv *rtlpriv = rtl_priv(hw);
635 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
636 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
637 u16 fc = le16_to_cpu(hdr->frame_control);
638 u16 ether_type;
639 u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
640 const struct iphdr *ip;
641
642 if (!ieee80211_is_data(fc))
643 goto end;
644
645 if (ieee80211_is_nullfunc(fc))
646 return true;
647
648 ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
649 SNAP_SIZE + PROTOC_TYPE_SIZE);
650 ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
651 ether_type = ntohs(ether_type);
652
653 if (ETH_P_IP == ether_type) {
654 if (IPPROTO_UDP == ip->protocol) {
655 struct udphdr *udp = (struct udphdr *)((u8 *) ip +
656 (ip->ihl << 2));
657 if (((((u8 *) udp)[1] == 68) &&
658 (((u8 *) udp)[3] == 67)) ||
659 ((((u8 *) udp)[1] == 67) &&
660 (((u8 *) udp)[3] == 68))) {
661 /*
662 * 68 : UDP BOOTP client
663 * 67 : UDP BOOTP server
664 */
665 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
666 DBG_DMESG, ("dhcp %s !!\n",
667 (is_tx) ? "Tx" : "Rx"));
668
669 if (is_tx) {
670 rtl_lps_leave(hw);
671 ppsc->last_delaylps_stamp_jiffies =
672 jiffies;
673 }
674
675 return true;
676 }
677 }
678 } else if (ETH_P_ARP == ether_type) {
679 if (is_tx) {
680 rtl_lps_leave(hw);
681 ppsc->last_delaylps_stamp_jiffies = jiffies;
682 }
683
684 return true;
685 } else if (ETH_P_PAE == ether_type) {
686 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
687 ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx"));
688
689 if (is_tx) {
690 rtl_lps_leave(hw);
691 ppsc->last_delaylps_stamp_jiffies = jiffies;
692 }
693
694 return true;
695 } else if (0x86DD == ether_type) {
696 return true;
697 }
698
699end:
700 return false;
701}
702
703/*********************************************************
704 *
705 * functions called by core.c
706 *
707 *********************************************************/
708int rtl_tx_agg_start(struct ieee80211_hw *hw, const u8 *ra, u16 tid, u16 *ssn)
709{
710 struct rtl_priv *rtlpriv = rtl_priv(hw);
711 struct rtl_tid_data *tid_data;
712 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
713
714 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
715 ("on ra = %pM tid = %d\n", ra, tid));
716
717 if (unlikely(tid >= MAX_TID_COUNT))
718 return -EINVAL;
719
720 if (mac->tids[tid].agg.agg_state != RTL_AGG_OFF) {
721 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
722 ("Start AGG when state is not RTL_AGG_OFF !\n"));
723 return -ENXIO;
724 }
725
726 tid_data = &mac->tids[tid];
727 *ssn = SEQ_TO_SN(tid_data->seq_number);
728
729 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
730 ("HW queue is empty tid:%d\n", tid));
731 tid_data->agg.agg_state = RTL_AGG_ON;
732
733 ieee80211_start_tx_ba_cb_irqsafe(mac->vif, ra, tid);
734
735 return 0;
736}
737
738int rtl_tx_agg_stop(struct ieee80211_hw *hw, const u8 * ra, u16 tid)
739{
740 int ssn = -1;
741 struct rtl_priv *rtlpriv = rtl_priv(hw);
742 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
743 struct rtl_tid_data *tid_data;
744
745 if (!ra) {
746 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
747 return -EINVAL;
748 }
749
750 if (unlikely(tid >= MAX_TID_COUNT))
751 return -EINVAL;
752
753 if (mac->tids[tid].agg.agg_state != RTL_AGG_ON)
754 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
755 ("Stopping AGG while state not ON or starting\n"));
756
757 tid_data = &mac->tids[tid];
758 ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
759
760 mac->tids[tid].agg.agg_state = RTL_AGG_OFF;
761
762 ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, ra, tid);
763
764 return 0;
765}
766
767/*********************************************************
768 *
769 * wq & timer callback functions
770 *
771 *********************************************************/
772void rtl_watchdog_wq_callback(void *data)
773{
774 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
775 struct rtl_works,
776 watchdog_wq);
777 struct ieee80211_hw *hw = rtlworks->hw;
778 struct rtl_priv *rtlpriv = rtl_priv(hw);
779 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
780 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
781
782 bool b_busytraffic = false;
783 bool b_higher_busytraffic = false;
784 bool b_higher_busyrxtraffic = false;
785 bool b_higher_busytxtraffic = false;
786
787 u8 idx = 0;
788 u32 rx_cnt_inp4eriod = 0;
789 u32 tx_cnt_inp4eriod = 0;
790 u32 aver_rx_cnt_inperiod = 0;
791 u32 aver_tx_cnt_inperiod = 0;
792
793 bool benter_ps = false;
794
795 if (is_hal_stop(rtlhal))
796 return;
797
798 /* <1> Determine if action frame is allowed */
799 if (mac->link_state > MAC80211_NOLINK) {
800 if (mac->cnt_after_linked < 20)
801 mac->cnt_after_linked++;
802 } else {
803 mac->cnt_after_linked = 0;
804 }
805
806 /* <2> DM */
807 rtlpriv->cfg->ops->dm_watchdog(hw);
808
809 /*
810 *<3> to check if traffic busy, if
811 * busytraffic we don't change channel
812 */
813 if (mac->link_state >= MAC80211_LINKED) {
814
815 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
816 for (idx = 0; idx <= 2; idx++) {
817 rtlpriv->link_info.num_rx_in4period[idx] =
818 rtlpriv->link_info.num_rx_in4period[idx + 1];
819 rtlpriv->link_info.num_tx_in4period[idx] =
820 rtlpriv->link_info.num_tx_in4period[idx + 1];
821 }
822 rtlpriv->link_info.num_rx_in4period[3] =
823 rtlpriv->link_info.num_rx_inperiod;
824 rtlpriv->link_info.num_tx_in4period[3] =
825 rtlpriv->link_info.num_tx_inperiod;
826 for (idx = 0; idx <= 3; idx++) {
827 rx_cnt_inp4eriod +=
828 rtlpriv->link_info.num_rx_in4period[idx];
829 tx_cnt_inp4eriod +=
830 rtlpriv->link_info.num_tx_in4period[idx];
831 }
832 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
833 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
834
835 /* (2) check traffic busy */
836 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
837 b_busytraffic = true;
838
839 /* Higher Tx/Rx data. */
840 if (aver_rx_cnt_inperiod > 4000 ||
841 aver_tx_cnt_inperiod > 4000) {
842 b_higher_busytraffic = true;
843
844 /* Extremely high Rx data. */
845 if (aver_rx_cnt_inperiod > 5000)
846 b_higher_busyrxtraffic = true;
847 else
848 b_higher_busytxtraffic = false;
849 }
850
851 if (((rtlpriv->link_info.num_rx_inperiod +
852 rtlpriv->link_info.num_tx_inperiod) > 8) ||
853 (rtlpriv->link_info.num_rx_inperiod > 2))
854 benter_ps = false;
855 else
856 benter_ps = true;
857
858 /* LeisurePS only work in infra mode. */
859 if (benter_ps)
860 rtl_lps_enter(hw);
861 else
862 rtl_lps_leave(hw);
863 }
864
865 rtlpriv->link_info.num_rx_inperiod = 0;
866 rtlpriv->link_info.num_tx_inperiod = 0;
867
868 rtlpriv->link_info.b_busytraffic = b_busytraffic;
869 rtlpriv->link_info.b_higher_busytraffic = b_higher_busytraffic;
870 rtlpriv->link_info.b_higher_busyrxtraffic = b_higher_busyrxtraffic;
871
872}
873
874void rtl_watch_dog_timer_callback(unsigned long data)
875{
876 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
877 struct rtl_priv *rtlpriv = rtl_priv(hw);
878
879 queue_delayed_work(rtlpriv->works.rtl_wq,
880 &rtlpriv->works.watchdog_wq, 0);
881
882 mod_timer(&rtlpriv->works.watchdog_timer,
883 jiffies + MSECS(RTL_WATCH_DOG_TIME));
884}
885
886/*********************************************************
887 *
888 * sysfs functions
889 *
890 *********************************************************/
891static ssize_t rtl_show_debug_level(struct device *d,
892 struct device_attribute *attr, char *buf)
893{
894 struct ieee80211_hw *hw = dev_get_drvdata(d);
895 struct rtl_priv *rtlpriv = rtl_priv(hw);
896
897 return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
898}
899
900static ssize_t rtl_store_debug_level(struct device *d,
901 struct device_attribute *attr,
902 const char *buf, size_t count)
903{
904 struct ieee80211_hw *hw = dev_get_drvdata(d);
905 struct rtl_priv *rtlpriv = rtl_priv(hw);
906 unsigned long val;
907 int ret;
908
909 ret = strict_strtoul(buf, 0, &val);
910 if (ret) {
911 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
912 } else {
913 rtlpriv->dbg.global_debuglevel = val;
914 printk(KERN_DEBUG "debuglevel:%x\n",
915 rtlpriv->dbg.global_debuglevel);
916 }
917
918 return strnlen(buf, count);
919}
920
921static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
922 rtl_show_debug_level, rtl_store_debug_level);
923
924static struct attribute *rtl_sysfs_entries[] = {
925
926 &dev_attr_debug_level.attr,
927
928 NULL
929};
930
931/*
932 * "name" is folder name witch will be
933 * put in device directory like :
934 * sys/devices/pci0000:00/0000:00:1c.4/
935 * 0000:06:00.0/rtl_sysfs
936 */
937struct attribute_group rtl_attribute_group = {
938 .name = "rtlsysfs",
939 .attrs = rtl_sysfs_entries,
940};
941
942MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
943MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
944MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
945MODULE_LICENSE("GPL");
946MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
947
948static int __init rtl_core_module_init(void)
949{
950 return 0;
951}
952
953static void __exit rtl_core_module_exit(void)
954{
955}
956
957module_init(rtl_core_module_init);
958module_exit(rtl_core_module_exit);
kernel source for telekom puls (alcatel/mediatek)