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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 | *********************************************************/ | |
62 | static 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 | ||
79 | static 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 | ||
94 | static 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 | ||
106 | static 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 | ||
160 | static 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 | ||
217 | static 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; | |
3d986b25 | 228 | rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0); |
0c817338 LF |
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 | ||
236 | void 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 | ||
246 | void 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 | ||
0c817338 LF |
254 | radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid); |
255 | ||
e6d8a817 LF |
256 | /*set init state to that of switch */ |
257 | rtlpriv->rfkill.rfkill_state = radio_state; | |
258 | printk(KERN_INFO "rtlwifi: wireless switch is %s\n", | |
259 | rtlpriv->rfkill.rfkill_state ? "on" : "off"); | |
0c817338 | 260 | |
e6d8a817 | 261 | if (valid) { |
0c817338 LF |
262 | rtlpriv->rfkill.rfkill_state = radio_state; |
263 | ||
264 | blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1; | |
265 | wiphy_rfkill_set_hw_state(hw->wiphy, blocked); | |
266 | } | |
267 | ||
268 | wiphy_rfkill_start_polling(hw->wiphy); | |
269 | } | |
270 | ||
271 | void rtl_deinit_rfkill(struct ieee80211_hw *hw) | |
272 | { | |
273 | wiphy_rfkill_stop_polling(hw->wiphy); | |
274 | } | |
275 | ||
276 | int rtl_init_core(struct ieee80211_hw *hw) | |
277 | { | |
278 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
279 | struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw)); | |
280 | ||
281 | /* <1> init mac80211 */ | |
282 | _rtl_init_mac80211(hw); | |
283 | rtlmac->hw = hw; | |
284 | ||
285 | /* <2> rate control register */ | |
286 | if (rtl_rate_control_register()) { | |
287 | RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, | |
288 | ("rtl: Unable to register rtl_rc," | |
289 | "use default RC !!\n")); | |
290 | } else { | |
291 | hw->rate_control_algorithm = "rtl_rc"; | |
292 | } | |
293 | ||
294 | /* | |
295 | * <3> init CRDA must come after init | |
296 | * mac80211 hw in _rtl_init_mac80211. | |
297 | */ | |
298 | if (rtl_regd_init(hw, rtl_reg_notifier)) { | |
299 | RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n")); | |
300 | return 1; | |
301 | } else { | |
302 | /* CRDA regd hint must after init CRDA */ | |
303 | if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) { | |
304 | RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, | |
305 | ("regulatory_hint fail\n")); | |
306 | } | |
307 | } | |
308 | ||
309 | /* <4> locks */ | |
8a09d6d8 | 310 | mutex_init(&rtlpriv->locks.conf_mutex); |
d704300f | 311 | spin_lock_init(&rtlpriv->locks.ips_lock); |
0c817338 LF |
312 | spin_lock_init(&rtlpriv->locks.irq_th_lock); |
313 | spin_lock_init(&rtlpriv->locks.h2c_lock); | |
314 | spin_lock_init(&rtlpriv->locks.rf_ps_lock); | |
315 | spin_lock_init(&rtlpriv->locks.rf_lock); | |
316 | spin_lock_init(&rtlpriv->locks.lps_lock); | |
317 | ||
318 | rtlmac->link_state = MAC80211_NOLINK; | |
319 | ||
320 | /* <5> init deferred work */ | |
321 | _rtl_init_deferred_work(hw); | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | void rtl_deinit_core(struct ieee80211_hw *hw) | |
327 | { | |
328 | /*RC*/ | |
329 | rtl_rate_control_unregister(); | |
330 | } | |
331 | ||
332 | void rtl_init_rx_config(struct ieee80211_hw *hw) | |
333 | { | |
334 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
335 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
336 | ||
337 | rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf)); | |
338 | rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_MGT_FILTER, | |
339 | (u8 *) (&mac->rx_mgt_filter)); | |
340 | rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CTRL_FILTER, | |
341 | (u8 *) (&mac->rx_ctrl_filter)); | |
342 | rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_DATA_FILTER, | |
343 | (u8 *) (&mac->rx_data_filter)); | |
344 | } | |
345 | ||
346 | /********************************************************* | |
347 | * | |
348 | * tx information functions | |
349 | * | |
350 | *********************************************************/ | |
351 | static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw, | |
352 | struct rtl_tcb_desc *tcb_desc, | |
353 | struct ieee80211_tx_info *info) | |
354 | { | |
355 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
356 | u8 rate_flag = info->control.rates[0].flags; | |
357 | ||
358 | tcb_desc->use_shortpreamble = false; | |
359 | ||
360 | /* 1M can only use Long Preamble. 11B spec */ | |
361 | if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M]) | |
362 | return; | |
363 | else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) | |
364 | tcb_desc->use_shortpreamble = true; | |
365 | ||
366 | return; | |
367 | } | |
368 | ||
369 | static void _rtl_query_shortgi(struct ieee80211_hw *hw, | |
370 | struct rtl_tcb_desc *tcb_desc, | |
371 | struct ieee80211_tx_info *info) | |
372 | { | |
373 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
374 | u8 rate_flag = info->control.rates[0].flags; | |
375 | ||
376 | tcb_desc->use_shortgi = false; | |
377 | ||
378 | if (!mac->ht_enable) | |
379 | return; | |
380 | ||
381 | if (!mac->sgi_40 && !mac->sgi_20) | |
382 | return; | |
383 | ||
384 | if ((mac->bw_40 == true) && mac->sgi_40) | |
385 | tcb_desc->use_shortgi = true; | |
386 | else if ((mac->bw_40 == false) && mac->sgi_20) | |
387 | tcb_desc->use_shortgi = true; | |
388 | ||
389 | if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI)) | |
390 | tcb_desc->use_shortgi = false; | |
391 | ||
392 | } | |
393 | ||
394 | static void _rtl_query_protection_mode(struct ieee80211_hw *hw, | |
395 | struct rtl_tcb_desc *tcb_desc, | |
396 | struct ieee80211_tx_info *info) | |
397 | { | |
398 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
399 | u8 rate_flag = info->control.rates[0].flags; | |
400 | ||
401 | /* Common Settings */ | |
7ea47240 LF |
402 | tcb_desc->rts_stbc = false; |
403 | tcb_desc->cts_enable = false; | |
0c817338 | 404 | tcb_desc->rts_sc = 0; |
7ea47240 LF |
405 | tcb_desc->rts_bw = false; |
406 | tcb_desc->rts_use_shortpreamble = false; | |
407 | tcb_desc->rts_use_shortgi = false; | |
0c817338 LF |
408 | |
409 | if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) { | |
410 | /* Use CTS-to-SELF in protection mode. */ | |
7ea47240 LF |
411 | tcb_desc->rts_enable = true; |
412 | tcb_desc->cts_enable = true; | |
0c817338 LF |
413 | tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M]; |
414 | } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) { | |
415 | /* Use RTS-CTS in protection mode. */ | |
7ea47240 | 416 | tcb_desc->rts_enable = true; |
0c817338 LF |
417 | tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M]; |
418 | } | |
419 | ||
420 | } | |
421 | ||
422 | static void _rtl_txrate_selectmode(struct ieee80211_hw *hw, | |
423 | struct rtl_tcb_desc *tcb_desc) | |
424 | { | |
425 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
426 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
427 | ||
428 | if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) { | |
429 | if (mac->opmode == NL80211_IFTYPE_STATION) | |
430 | tcb_desc->ratr_index = 0; | |
431 | else if (mac->opmode == NL80211_IFTYPE_ADHOC) { | |
7ea47240 | 432 | if (tcb_desc->multicast || tcb_desc->broadcast) { |
0c817338 LF |
433 | tcb_desc->hw_rate = |
434 | rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M]; | |
435 | tcb_desc->use_driver_rate = 1; | |
436 | } else { | |
437 | /* TODO */ | |
438 | } | |
439 | } | |
440 | } | |
441 | ||
7ea47240 | 442 | if (rtlpriv->dm.useramask) { |
0c817338 LF |
443 | /* TODO we will differentiate adhoc and station futrue */ |
444 | tcb_desc->mac_id = 0; | |
445 | ||
446 | if ((mac->mode == WIRELESS_MODE_N_24G) || | |
447 | (mac->mode == WIRELESS_MODE_N_5G)) { | |
448 | tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB; | |
449 | } else if (mac->mode & WIRELESS_MODE_G) { | |
450 | tcb_desc->ratr_index = RATR_INX_WIRELESS_GB; | |
451 | } else if (mac->mode & WIRELESS_MODE_B) { | |
452 | tcb_desc->ratr_index = RATR_INX_WIRELESS_B; | |
453 | } | |
454 | } | |
455 | ||
456 | } | |
457 | ||
458 | static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw, | |
459 | struct rtl_tcb_desc *tcb_desc) | |
460 | { | |
461 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
462 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
463 | ||
7ea47240 | 464 | tcb_desc->packet_bw = false; |
0c817338 LF |
465 | |
466 | if (!mac->bw_40 || !mac->ht_enable) | |
467 | return; | |
468 | ||
7ea47240 | 469 | if (tcb_desc->multicast || tcb_desc->broadcast) |
0c817338 LF |
470 | return; |
471 | ||
472 | /*use legency rate, shall use 20MHz */ | |
473 | if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M]) | |
474 | return; | |
475 | ||
7ea47240 | 476 | tcb_desc->packet_bw = true; |
0c817338 LF |
477 | } |
478 | ||
479 | static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw) | |
480 | { | |
481 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
482 | struct rtl_phy *rtlphy = &(rtlpriv->phy); | |
483 | u8 hw_rate; | |
484 | ||
485 | if (get_rf_type(rtlphy) == RF_2T2R) | |
486 | hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15]; | |
487 | else | |
488 | hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7]; | |
489 | ||
490 | return hw_rate; | |
491 | } | |
492 | ||
493 | void rtl_get_tcb_desc(struct ieee80211_hw *hw, | |
494 | struct ieee80211_tx_info *info, | |
495 | struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc) | |
496 | { | |
497 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
498 | struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw)); | |
499 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); | |
500 | struct ieee80211_rate *txrate; | |
501 | u16 fc = le16_to_cpu(hdr->frame_control); | |
502 | ||
503 | memset(tcb_desc, 0, sizeof(struct rtl_tcb_desc)); | |
504 | ||
505 | if (ieee80211_is_data(fc)) { | |
506 | txrate = ieee80211_get_tx_rate(hw, info); | |
507 | tcb_desc->hw_rate = txrate->hw_value; | |
508 | ||
509 | /* | |
510 | *we set data rate RTL_RC_CCK_RATE1M | |
511 | *in rtl_rc.c if skb is special data or | |
512 | *mgt which need low data rate. | |
513 | */ | |
514 | ||
515 | /* | |
516 | *So tcb_desc->hw_rate is just used for | |
517 | *special data and mgt frames | |
518 | */ | |
519 | if (tcb_desc->hw_rate < rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M]) { | |
520 | tcb_desc->use_driver_rate = true; | |
521 | tcb_desc->ratr_index = 7; | |
522 | ||
523 | tcb_desc->hw_rate = | |
524 | rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M]; | |
525 | tcb_desc->disable_ratefallback = 1; | |
526 | } else { | |
527 | /* | |
528 | *because hw will nerver use hw_rate | |
529 | *when tcb_desc->use_driver_rate = false | |
530 | *so we never set highest N rate here, | |
531 | *and N rate will all be controled by FW | |
532 | *when tcb_desc->use_driver_rate = false | |
533 | */ | |
534 | if (rtlmac->ht_enable) { | |
535 | tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw); | |
536 | } else { | |
537 | if (rtlmac->mode == WIRELESS_MODE_B) { | |
538 | tcb_desc->hw_rate = | |
539 | rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M]; | |
540 | } else { | |
541 | tcb_desc->hw_rate = | |
542 | rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M]; | |
543 | } | |
544 | } | |
545 | } | |
546 | ||
547 | if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) | |
7ea47240 | 548 | tcb_desc->multicast = 1; |
0c817338 | 549 | else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr))) |
7ea47240 | 550 | tcb_desc->broadcast = 1; |
0c817338 LF |
551 | |
552 | _rtl_txrate_selectmode(hw, tcb_desc); | |
553 | _rtl_query_bandwidth_mode(hw, tcb_desc); | |
554 | _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info); | |
555 | _rtl_query_shortgi(hw, tcb_desc, info); | |
556 | _rtl_query_protection_mode(hw, tcb_desc, info); | |
557 | } else { | |
558 | tcb_desc->use_driver_rate = true; | |
559 | tcb_desc->ratr_index = 7; | |
560 | tcb_desc->disable_ratefallback = 1; | |
561 | tcb_desc->mac_id = 0; | |
562 | ||
563 | tcb_desc->hw_rate = rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M]; | |
564 | } | |
565 | } | |
566 | EXPORT_SYMBOL(rtl_get_tcb_desc); | |
567 | ||
568 | bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb) | |
569 | { | |
570 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
571 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
572 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); | |
573 | u16 fc = le16_to_cpu(hdr->frame_control); | |
574 | ||
575 | if (ieee80211_is_auth(fc)) { | |
576 | RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n")); | |
577 | rtl_ips_nic_on(hw); | |
578 | ||
579 | mac->link_state = MAC80211_LINKING; | |
580 | } | |
581 | ||
582 | return true; | |
583 | } | |
584 | ||
585 | bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx) | |
586 | { | |
587 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
588 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); | |
589 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
590 | u16 fc = le16_to_cpu(hdr->frame_control); | |
591 | u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN)); | |
592 | u8 category; | |
593 | ||
594 | if (!ieee80211_is_action(fc)) | |
595 | return true; | |
596 | ||
597 | category = *act; | |
598 | act++; | |
599 | switch (category) { | |
600 | case ACT_CAT_BA: | |
601 | switch (*act) { | |
602 | case ACT_ADDBAREQ: | |
603 | if (mac->act_scanning) | |
604 | return false; | |
605 | ||
606 | RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG, | |
607 | ("%s ACT_ADDBAREQ From :" MAC_FMT "\n", | |
608 | is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2))); | |
609 | break; | |
610 | case ACT_ADDBARSP: | |
611 | RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG, | |
612 | ("%s ACT_ADDBARSP From :" MAC_FMT "\n", | |
613 | is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2))); | |
614 | break; | |
615 | case ACT_DELBA: | |
616 | RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG, | |
617 | ("ACT_ADDBADEL From :" MAC_FMT "\n", | |
618 | MAC_ARG(hdr->addr2))); | |
619 | break; | |
620 | } | |
621 | break; | |
622 | default: | |
623 | break; | |
624 | } | |
625 | ||
626 | return true; | |
627 | } | |
628 | ||
629 | /*should call before software enc*/ | |
630 | u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx) | |
631 | { | |
632 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
633 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); | |
634 | struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); | |
635 | u16 fc = le16_to_cpu(hdr->frame_control); | |
636 | u16 ether_type; | |
637 | u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb); | |
638 | const struct iphdr *ip; | |
639 | ||
640 | if (!ieee80211_is_data(fc)) | |
641 | goto end; | |
642 | ||
643 | if (ieee80211_is_nullfunc(fc)) | |
644 | return true; | |
645 | ||
646 | ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len + | |
647 | SNAP_SIZE + PROTOC_TYPE_SIZE); | |
648 | ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE); | |
649 | ether_type = ntohs(ether_type); | |
650 | ||
651 | if (ETH_P_IP == ether_type) { | |
652 | if (IPPROTO_UDP == ip->protocol) { | |
653 | struct udphdr *udp = (struct udphdr *)((u8 *) ip + | |
654 | (ip->ihl << 2)); | |
655 | if (((((u8 *) udp)[1] == 68) && | |
656 | (((u8 *) udp)[3] == 67)) || | |
657 | ((((u8 *) udp)[1] == 67) && | |
658 | (((u8 *) udp)[3] == 68))) { | |
659 | /* | |
660 | * 68 : UDP BOOTP client | |
661 | * 67 : UDP BOOTP server | |
662 | */ | |
663 | RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), | |
664 | DBG_DMESG, ("dhcp %s !!\n", | |
665 | (is_tx) ? "Tx" : "Rx")); | |
666 | ||
667 | if (is_tx) { | |
668 | rtl_lps_leave(hw); | |
669 | ppsc->last_delaylps_stamp_jiffies = | |
670 | jiffies; | |
671 | } | |
672 | ||
673 | return true; | |
674 | } | |
675 | } | |
676 | } else if (ETH_P_ARP == ether_type) { | |
677 | if (is_tx) { | |
678 | rtl_lps_leave(hw); | |
679 | ppsc->last_delaylps_stamp_jiffies = jiffies; | |
680 | } | |
681 | ||
682 | return true; | |
683 | } else if (ETH_P_PAE == ether_type) { | |
684 | RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG, | |
685 | ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx")); | |
686 | ||
687 | if (is_tx) { | |
688 | rtl_lps_leave(hw); | |
689 | ppsc->last_delaylps_stamp_jiffies = jiffies; | |
690 | } | |
691 | ||
692 | return true; | |
693 | } else if (0x86DD == ether_type) { | |
694 | return true; | |
695 | } | |
696 | ||
697 | end: | |
698 | return false; | |
699 | } | |
700 | ||
701 | /********************************************************* | |
702 | * | |
703 | * functions called by core.c | |
704 | * | |
705 | *********************************************************/ | |
706 | int rtl_tx_agg_start(struct ieee80211_hw *hw, const u8 *ra, u16 tid, u16 *ssn) | |
707 | { | |
708 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
709 | struct rtl_tid_data *tid_data; | |
710 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
711 | ||
712 | RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, | |
713 | ("on ra = %pM tid = %d\n", ra, tid)); | |
714 | ||
715 | if (unlikely(tid >= MAX_TID_COUNT)) | |
716 | return -EINVAL; | |
717 | ||
718 | if (mac->tids[tid].agg.agg_state != RTL_AGG_OFF) { | |
719 | RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, | |
720 | ("Start AGG when state is not RTL_AGG_OFF !\n")); | |
721 | return -ENXIO; | |
722 | } | |
723 | ||
724 | tid_data = &mac->tids[tid]; | |
725 | *ssn = SEQ_TO_SN(tid_data->seq_number); | |
726 | ||
727 | RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, | |
728 | ("HW queue is empty tid:%d\n", tid)); | |
729 | tid_data->agg.agg_state = RTL_AGG_ON; | |
730 | ||
731 | ieee80211_start_tx_ba_cb_irqsafe(mac->vif, ra, tid); | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
736 | int rtl_tx_agg_stop(struct ieee80211_hw *hw, const u8 * ra, u16 tid) | |
737 | { | |
738 | int ssn = -1; | |
739 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
740 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
741 | struct rtl_tid_data *tid_data; | |
742 | ||
743 | if (!ra) { | |
744 | RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n")); | |
745 | return -EINVAL; | |
746 | } | |
747 | ||
748 | if (unlikely(tid >= MAX_TID_COUNT)) | |
749 | return -EINVAL; | |
750 | ||
751 | if (mac->tids[tid].agg.agg_state != RTL_AGG_ON) | |
752 | RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, | |
753 | ("Stopping AGG while state not ON or starting\n")); | |
754 | ||
755 | tid_data = &mac->tids[tid]; | |
756 | ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4; | |
757 | ||
758 | mac->tids[tid].agg.agg_state = RTL_AGG_OFF; | |
759 | ||
760 | ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, ra, tid); | |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
765 | /********************************************************* | |
766 | * | |
767 | * wq & timer callback functions | |
768 | * | |
769 | *********************************************************/ | |
770 | void rtl_watchdog_wq_callback(void *data) | |
771 | { | |
772 | struct rtl_works *rtlworks = container_of_dwork_rtl(data, | |
773 | struct rtl_works, | |
774 | watchdog_wq); | |
775 | struct ieee80211_hw *hw = rtlworks->hw; | |
776 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
777 | struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); | |
778 | struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); | |
779 | ||
7ea47240 LF |
780 | bool busytraffic = false; |
781 | bool higher_busytraffic = false; | |
782 | bool higher_busyrxtraffic = false; | |
783 | bool higher_busytxtraffic = false; | |
0c817338 LF |
784 | |
785 | u8 idx = 0; | |
786 | u32 rx_cnt_inp4eriod = 0; | |
787 | u32 tx_cnt_inp4eriod = 0; | |
788 | u32 aver_rx_cnt_inperiod = 0; | |
789 | u32 aver_tx_cnt_inperiod = 0; | |
790 | ||
7ea47240 | 791 | bool enter_ps = false; |
0c817338 LF |
792 | |
793 | if (is_hal_stop(rtlhal)) | |
794 | return; | |
795 | ||
796 | /* <1> Determine if action frame is allowed */ | |
797 | if (mac->link_state > MAC80211_NOLINK) { | |
798 | if (mac->cnt_after_linked < 20) | |
799 | mac->cnt_after_linked++; | |
800 | } else { | |
801 | mac->cnt_after_linked = 0; | |
802 | } | |
803 | ||
804 | /* <2> DM */ | |
805 | rtlpriv->cfg->ops->dm_watchdog(hw); | |
806 | ||
807 | /* | |
808 | *<3> to check if traffic busy, if | |
809 | * busytraffic we don't change channel | |
810 | */ | |
811 | if (mac->link_state >= MAC80211_LINKED) { | |
812 | ||
813 | /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */ | |
814 | for (idx = 0; idx <= 2; idx++) { | |
815 | rtlpriv->link_info.num_rx_in4period[idx] = | |
816 | rtlpriv->link_info.num_rx_in4period[idx + 1]; | |
817 | rtlpriv->link_info.num_tx_in4period[idx] = | |
818 | rtlpriv->link_info.num_tx_in4period[idx + 1]; | |
819 | } | |
820 | rtlpriv->link_info.num_rx_in4period[3] = | |
821 | rtlpriv->link_info.num_rx_inperiod; | |
822 | rtlpriv->link_info.num_tx_in4period[3] = | |
823 | rtlpriv->link_info.num_tx_inperiod; | |
824 | for (idx = 0; idx <= 3; idx++) { | |
825 | rx_cnt_inp4eriod += | |
826 | rtlpriv->link_info.num_rx_in4period[idx]; | |
827 | tx_cnt_inp4eriod += | |
828 | rtlpriv->link_info.num_tx_in4period[idx]; | |
829 | } | |
830 | aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4; | |
831 | aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4; | |
832 | ||
833 | /* (2) check traffic busy */ | |
834 | if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100) | |
7ea47240 | 835 | busytraffic = true; |
0c817338 LF |
836 | |
837 | /* Higher Tx/Rx data. */ | |
838 | if (aver_rx_cnt_inperiod > 4000 || | |
839 | aver_tx_cnt_inperiod > 4000) { | |
7ea47240 | 840 | higher_busytraffic = true; |
0c817338 LF |
841 | |
842 | /* Extremely high Rx data. */ | |
843 | if (aver_rx_cnt_inperiod > 5000) | |
7ea47240 | 844 | higher_busyrxtraffic = true; |
0c817338 | 845 | else |
7ea47240 | 846 | higher_busytxtraffic = false; |
0c817338 LF |
847 | } |
848 | ||
849 | if (((rtlpriv->link_info.num_rx_inperiod + | |
850 | rtlpriv->link_info.num_tx_inperiod) > 8) || | |
851 | (rtlpriv->link_info.num_rx_inperiod > 2)) | |
7ea47240 | 852 | enter_ps = false; |
0c817338 | 853 | else |
7ea47240 | 854 | enter_ps = true; |
0c817338 LF |
855 | |
856 | /* LeisurePS only work in infra mode. */ | |
7ea47240 | 857 | if (enter_ps) |
0c817338 LF |
858 | rtl_lps_enter(hw); |
859 | else | |
860 | rtl_lps_leave(hw); | |
861 | } | |
862 | ||
863 | rtlpriv->link_info.num_rx_inperiod = 0; | |
864 | rtlpriv->link_info.num_tx_inperiod = 0; | |
865 | ||
7ea47240 LF |
866 | rtlpriv->link_info.busytraffic = busytraffic; |
867 | rtlpriv->link_info.higher_busytraffic = higher_busytraffic; | |
868 | rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic; | |
0c817338 LF |
869 | |
870 | } | |
871 | ||
872 | void rtl_watch_dog_timer_callback(unsigned long data) | |
873 | { | |
874 | struct ieee80211_hw *hw = (struct ieee80211_hw *)data; | |
875 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
876 | ||
877 | queue_delayed_work(rtlpriv->works.rtl_wq, | |
878 | &rtlpriv->works.watchdog_wq, 0); | |
879 | ||
880 | mod_timer(&rtlpriv->works.watchdog_timer, | |
881 | jiffies + MSECS(RTL_WATCH_DOG_TIME)); | |
882 | } | |
883 | ||
884 | /********************************************************* | |
885 | * | |
886 | * sysfs functions | |
887 | * | |
888 | *********************************************************/ | |
889 | static ssize_t rtl_show_debug_level(struct device *d, | |
890 | struct device_attribute *attr, char *buf) | |
891 | { | |
892 | struct ieee80211_hw *hw = dev_get_drvdata(d); | |
893 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
894 | ||
895 | return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel); | |
896 | } | |
897 | ||
898 | static ssize_t rtl_store_debug_level(struct device *d, | |
899 | struct device_attribute *attr, | |
900 | const char *buf, size_t count) | |
901 | { | |
902 | struct ieee80211_hw *hw = dev_get_drvdata(d); | |
903 | struct rtl_priv *rtlpriv = rtl_priv(hw); | |
904 | unsigned long val; | |
905 | int ret; | |
906 | ||
907 | ret = strict_strtoul(buf, 0, &val); | |
908 | if (ret) { | |
909 | printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf); | |
910 | } else { | |
911 | rtlpriv->dbg.global_debuglevel = val; | |
912 | printk(KERN_DEBUG "debuglevel:%x\n", | |
913 | rtlpriv->dbg.global_debuglevel); | |
914 | } | |
915 | ||
916 | return strnlen(buf, count); | |
917 | } | |
918 | ||
919 | static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, | |
920 | rtl_show_debug_level, rtl_store_debug_level); | |
921 | ||
922 | static struct attribute *rtl_sysfs_entries[] = { | |
923 | ||
924 | &dev_attr_debug_level.attr, | |
925 | ||
926 | NULL | |
927 | }; | |
928 | ||
929 | /* | |
930 | * "name" is folder name witch will be | |
931 | * put in device directory like : | |
932 | * sys/devices/pci0000:00/0000:00:1c.4/ | |
933 | * 0000:06:00.0/rtl_sysfs | |
934 | */ | |
935 | struct attribute_group rtl_attribute_group = { | |
936 | .name = "rtlsysfs", | |
937 | .attrs = rtl_sysfs_entries, | |
938 | }; | |
939 | ||
940 | MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>"); | |
941 | MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>"); | |
942 | MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>"); | |
943 | MODULE_LICENSE("GPL"); | |
944 | MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core"); | |
945 | ||
946 | static int __init rtl_core_module_init(void) | |
947 | { | |
948 | return 0; | |
949 | } | |
950 | ||
951 | static void __exit rtl_core_module_exit(void) | |
952 | { | |
953 | } | |
954 | ||
955 | module_init(rtl_core_module_init); | |
956 | module_exit(rtl_core_module_exit); |