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e04ed0a5 WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
901069c7 | 5 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
e04ed0a5 WYG |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
19 | * USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * Contact Information: | |
25 | * Intel Linux Wireless <ilw@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | * | |
28 | *****************************************************************************/ | |
8d801080 | 29 | #include <linux/etherdevice.h> |
e04ed0a5 WYG |
30 | #include <linux/kernel.h> |
31 | #include <linux/module.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/sched.h> | |
34 | ||
35 | #include "iwl-dev.h" | |
36 | #include "iwl-core.h" | |
37 | #include "iwl-io.h" | |
38 | #include "iwl-helpers.h" | |
39 | #include "iwl-agn-hw.h" | |
40 | #include "iwl-agn.h" | |
1fa61b2e | 41 | #include "iwl-sta.h" |
bdfbf092 | 42 | #include "iwl-trans.h" |
48f20d35 | 43 | #include "iwl-shared.h" |
e04ed0a5 | 44 | |
e04ed0a5 WYG |
45 | int iwlagn_hw_valid_rtc_data_addr(u32 addr) |
46 | { | |
47 | return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) && | |
48 | (addr < IWLAGN_RTC_DATA_UPPER_BOUND); | |
49 | } | |
50 | ||
51 | int iwlagn_send_tx_power(struct iwl_priv *priv) | |
52 | { | |
ab63c68a | 53 | struct iwlagn_tx_power_dbm_cmd tx_power_cmd; |
e04ed0a5 WYG |
54 | u8 tx_ant_cfg_cmd; |
55 | ||
63013ae3 | 56 | if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->shrd->status), |
4beeba7d SG |
57 | "TX Power requested while scanning!\n")) |
58 | return -EAGAIN; | |
59 | ||
e04ed0a5 WYG |
60 | /* half dBm need to multiply */ |
61 | tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt); | |
62 | ||
63 | if (priv->tx_power_lmt_in_half_dbm && | |
64 | priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) { | |
65 | /* | |
66 | * For the newer devices which using enhanced/extend tx power | |
67 | * table in EEPROM, the format is in half dBm. driver need to | |
68 | * convert to dBm format before report to mac80211. | |
69 | * By doing so, there is a possibility of 1/2 dBm resolution | |
70 | * lost. driver will perform "round-up" operation before | |
71 | * reporting, but it will cause 1/2 dBm tx power over the | |
72 | * regulatory limit. Perform the checking here, if the | |
73 | * "tx_power_user_lmt" is higher than EEPROM value (in | |
74 | * half-dBm format), lower the tx power based on EEPROM | |
75 | */ | |
76 | tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm; | |
77 | } | |
ab63c68a WYG |
78 | tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED; |
79 | tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO; | |
e04ed0a5 WYG |
80 | |
81 | if (IWL_UCODE_API(priv->ucode_ver) == 1) | |
82 | tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1; | |
83 | else | |
84 | tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD; | |
85 | ||
e6bb4c9c | 86 | return iwl_trans_send_cmd_pdu(trans(priv), tx_ant_cfg_cmd, CMD_SYNC, |
e419d62d | 87 | sizeof(tx_power_cmd), &tx_power_cmd); |
e04ed0a5 WYG |
88 | } |
89 | ||
90 | void iwlagn_temperature(struct iwl_priv *priv) | |
91 | { | |
f8f79a5d | 92 | /* store temperature from correct statistics (in Celsius) */ |
0da0e5bf | 93 | priv->temperature = le32_to_cpu(priv->statistics.common.temperature); |
e04ed0a5 WYG |
94 | iwl_tt_handler(priv); |
95 | } | |
96 | ||
97 | u16 iwlagn_eeprom_calib_version(struct iwl_priv *priv) | |
98 | { | |
99 | struct iwl_eeprom_calib_hdr { | |
100 | u8 version; | |
101 | u8 pa_type; | |
102 | u16 voltage; | |
103 | } *hdr; | |
104 | ||
105 | hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv, | |
7944f8e4 | 106 | EEPROM_CALIB_ALL); |
e04ed0a5 WYG |
107 | return hdr->version; |
108 | ||
109 | } | |
110 | ||
111 | /* | |
112 | * EEPROM | |
113 | */ | |
114 | static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address) | |
115 | { | |
116 | u16 offset = 0; | |
117 | ||
118 | if ((address & INDIRECT_ADDRESS) == 0) | |
119 | return address; | |
120 | ||
121 | switch (address & INDIRECT_TYPE_MSK) { | |
122 | case INDIRECT_HOST: | |
7944f8e4 | 123 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_HOST); |
e04ed0a5 WYG |
124 | break; |
125 | case INDIRECT_GENERAL: | |
7944f8e4 | 126 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_GENERAL); |
e04ed0a5 WYG |
127 | break; |
128 | case INDIRECT_REGULATORY: | |
7944f8e4 | 129 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_REGULATORY); |
e04ed0a5 | 130 | break; |
8d6748ca JB |
131 | case INDIRECT_TXP_LIMIT: |
132 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT); | |
133 | break; | |
134 | case INDIRECT_TXP_LIMIT_SIZE: | |
135 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT_SIZE); | |
136 | break; | |
e04ed0a5 | 137 | case INDIRECT_CALIBRATION: |
7944f8e4 | 138 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_CALIBRATION); |
e04ed0a5 WYG |
139 | break; |
140 | case INDIRECT_PROCESS_ADJST: | |
7944f8e4 | 141 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_PROCESS_ADJST); |
e04ed0a5 WYG |
142 | break; |
143 | case INDIRECT_OTHERS: | |
7944f8e4 | 144 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_OTHERS); |
e04ed0a5 WYG |
145 | break; |
146 | default: | |
147 | IWL_ERR(priv, "illegal indirect type: 0x%X\n", | |
148 | address & INDIRECT_TYPE_MSK); | |
149 | break; | |
150 | } | |
151 | ||
152 | /* translate the offset from words to byte */ | |
153 | return (address & ADDRESS_MSK) + (offset << 1); | |
154 | } | |
155 | ||
70e3e8a6 | 156 | const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) |
e04ed0a5 WYG |
157 | { |
158 | u32 address = eeprom_indirect_address(priv, offset); | |
7cb1b088 | 159 | BUG_ON(address >= priv->cfg->base_params->eeprom_size); |
e04ed0a5 WYG |
160 | return &priv->eeprom[address]; |
161 | } | |
348ee7cd WYG |
162 | |
163 | struct iwl_mod_params iwlagn_mod_params = { | |
164 | .amsdu_size_8K = 1, | |
165 | .restart_fw = 1, | |
b7977ffa | 166 | .plcp_check = true, |
b60eec9b | 167 | .bt_coex_active = true, |
3f1e5f4a | 168 | .no_sleep_autoadjust = true, |
f7538168 | 169 | .power_level = IWL_POWER_INDEX_1, |
fee84f0d | 170 | .bt_ch_announce = true, |
48f20d35 | 171 | .wanted_ucode_alternative = 1, |
dd5b6d0a | 172 | .auto_agg = true, |
348ee7cd WYG |
173 | /* the rest are 0 by default */ |
174 | }; | |
74bcdb33 | 175 | |
8d801080 WYG |
176 | int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band) |
177 | { | |
178 | int idx = 0; | |
179 | int band_offset = 0; | |
180 | ||
181 | /* HT rate format: mac80211 wants an MCS number, which is just LSB */ | |
182 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
183 | idx = (rate_n_flags & 0xff); | |
184 | return idx; | |
185 | /* Legacy rate format, search for match in table */ | |
186 | } else { | |
187 | if (band == IEEE80211_BAND_5GHZ) | |
188 | band_offset = IWL_FIRST_OFDM_RATE; | |
189 | for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) | |
190 | if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF)) | |
191 | return idx - band_offset; | |
192 | } | |
193 | ||
194 | return -1; | |
195 | } | |
196 | ||
b6e4c55a | 197 | static int iwl_get_single_channel_for_scan(struct iwl_priv *priv, |
1dda6d28 JB |
198 | struct ieee80211_vif *vif, |
199 | enum ieee80211_band band, | |
200 | struct iwl_scan_channel *scan_ch) | |
b6e4c55a JB |
201 | { |
202 | const struct ieee80211_supported_band *sband; | |
b6e4c55a JB |
203 | u16 passive_dwell = 0; |
204 | u16 active_dwell = 0; | |
14023641 | 205 | int added = 0; |
b6e4c55a JB |
206 | u16 channel = 0; |
207 | ||
208 | sband = iwl_get_hw_mode(priv, band); | |
209 | if (!sband) { | |
210 | IWL_ERR(priv, "invalid band\n"); | |
211 | return added; | |
212 | } | |
213 | ||
214 | active_dwell = iwl_get_active_dwell_time(priv, band, 0); | |
1dda6d28 | 215 | passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); |
b6e4c55a JB |
216 | |
217 | if (passive_dwell <= active_dwell) | |
218 | passive_dwell = active_dwell + 1; | |
219 | ||
14023641 | 220 | channel = iwl_get_single_channel_number(priv, band); |
b6e4c55a JB |
221 | if (channel) { |
222 | scan_ch->channel = cpu_to_le16(channel); | |
223 | scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; | |
224 | scan_ch->active_dwell = cpu_to_le16(active_dwell); | |
225 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); | |
226 | /* Set txpower levels to defaults */ | |
227 | scan_ch->dsp_atten = 110; | |
228 | if (band == IEEE80211_BAND_5GHZ) | |
229 | scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; | |
230 | else | |
231 | scan_ch->tx_gain = ((1 << 5) | (5 << 3)); | |
232 | added++; | |
233 | } else | |
234 | IWL_ERR(priv, "no valid channel found\n"); | |
235 | return added; | |
236 | } | |
237 | ||
238 | static int iwl_get_channels_for_scan(struct iwl_priv *priv, | |
1dda6d28 | 239 | struct ieee80211_vif *vif, |
b6e4c55a JB |
240 | enum ieee80211_band band, |
241 | u8 is_active, u8 n_probes, | |
242 | struct iwl_scan_channel *scan_ch) | |
243 | { | |
244 | struct ieee80211_channel *chan; | |
245 | const struct ieee80211_supported_band *sband; | |
246 | const struct iwl_channel_info *ch_info; | |
247 | u16 passive_dwell = 0; | |
248 | u16 active_dwell = 0; | |
249 | int added, i; | |
250 | u16 channel; | |
251 | ||
252 | sband = iwl_get_hw_mode(priv, band); | |
253 | if (!sband) | |
254 | return 0; | |
255 | ||
256 | active_dwell = iwl_get_active_dwell_time(priv, band, n_probes); | |
1dda6d28 | 257 | passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); |
b6e4c55a JB |
258 | |
259 | if (passive_dwell <= active_dwell) | |
260 | passive_dwell = active_dwell + 1; | |
261 | ||
262 | for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) { | |
263 | chan = priv->scan_request->channels[i]; | |
264 | ||
265 | if (chan->band != band) | |
266 | continue; | |
267 | ||
81e95430 | 268 | channel = chan->hw_value; |
b6e4c55a JB |
269 | scan_ch->channel = cpu_to_le16(channel); |
270 | ||
271 | ch_info = iwl_get_channel_info(priv, band, channel); | |
272 | if (!is_channel_valid(ch_info)) { | |
273 | IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n", | |
274 | channel); | |
275 | continue; | |
276 | } | |
277 | ||
278 | if (!is_active || is_channel_passive(ch_info) || | |
279 | (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) | |
280 | scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; | |
281 | else | |
282 | scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE; | |
283 | ||
284 | if (n_probes) | |
285 | scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes); | |
286 | ||
287 | scan_ch->active_dwell = cpu_to_le16(active_dwell); | |
288 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); | |
289 | ||
290 | /* Set txpower levels to defaults */ | |
291 | scan_ch->dsp_atten = 110; | |
292 | ||
293 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use | |
294 | * power level: | |
295 | * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; | |
296 | */ | |
297 | if (band == IEEE80211_BAND_5GHZ) | |
298 | scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; | |
299 | else | |
300 | scan_ch->tx_gain = ((1 << 5) | (5 << 3)); | |
301 | ||
302 | IWL_DEBUG_SCAN(priv, "Scanning ch=%d prob=0x%X [%s %d]\n", | |
303 | channel, le32_to_cpu(scan_ch->type), | |
304 | (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ? | |
305 | "ACTIVE" : "PASSIVE", | |
306 | (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ? | |
307 | active_dwell : passive_dwell); | |
308 | ||
309 | scan_ch++; | |
310 | added++; | |
311 | } | |
312 | ||
313 | IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added); | |
314 | return added; | |
315 | } | |
316 | ||
3eecce52 | 317 | int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) |
b6e4c55a JB |
318 | { |
319 | struct iwl_host_cmd cmd = { | |
320 | .id = REPLY_SCAN_CMD, | |
3fa50738 | 321 | .len = { sizeof(struct iwl_scan_cmd), }, |
e419d62d | 322 | .flags = CMD_SYNC, |
b6e4c55a JB |
323 | }; |
324 | struct iwl_scan_cmd *scan; | |
a194e324 | 325 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
b6e4c55a JB |
326 | u32 rate_flags = 0; |
327 | u16 cmd_len; | |
328 | u16 rx_chain = 0; | |
329 | enum ieee80211_band band; | |
330 | u8 n_probes = 0; | |
d6189124 | 331 | u8 rx_ant = hw_params(priv).valid_rx_ant; |
b6e4c55a JB |
332 | u8 rate; |
333 | bool is_active = false; | |
334 | int chan_mod; | |
335 | u8 active_chains; | |
d6189124 | 336 | u8 scan_tx_antennas = hw_params(priv).valid_tx_ant; |
3eecce52 JB |
337 | int ret; |
338 | ||
6ac2f839 | 339 | lockdep_assert_held(&priv->shrd->mutex); |
b6e4c55a | 340 | |
a194e324 JB |
341 | if (vif) |
342 | ctx = iwl_rxon_ctx_from_vif(vif); | |
343 | ||
b6e4c55a JB |
344 | if (!priv->scan_cmd) { |
345 | priv->scan_cmd = kmalloc(sizeof(struct iwl_scan_cmd) + | |
346 | IWL_MAX_SCAN_SIZE, GFP_KERNEL); | |
347 | if (!priv->scan_cmd) { | |
348 | IWL_DEBUG_SCAN(priv, | |
349 | "fail to allocate memory for scan\n"); | |
3eecce52 | 350 | return -ENOMEM; |
b6e4c55a JB |
351 | } |
352 | } | |
353 | scan = priv->scan_cmd; | |
354 | memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE); | |
355 | ||
356 | scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; | |
357 | scan->quiet_time = IWL_ACTIVE_QUIET_TIME; | |
358 | ||
c6baf7fb | 359 | if (priv->scan_type != IWL_SCAN_ROC && |
266af4c7 | 360 | iwl_is_any_associated(priv)) { |
b6e4c55a JB |
361 | u16 interval = 0; |
362 | u32 extra; | |
363 | u32 suspend_time = 100; | |
364 | u32 scan_suspend_time = 100; | |
b6e4c55a JB |
365 | |
366 | IWL_DEBUG_INFO(priv, "Scanning while associated...\n"); | |
266af4c7 | 367 | switch (priv->scan_type) { |
c6baf7fb | 368 | case IWL_SCAN_ROC: |
266af4c7 JB |
369 | WARN_ON(1); |
370 | break; | |
371 | case IWL_SCAN_RADIO_RESET: | |
a6e492b9 | 372 | interval = 0; |
266af4c7 JB |
373 | break; |
374 | case IWL_SCAN_NORMAL: | |
a6e492b9 | 375 | interval = vif->bss_conf.beacon_int; |
266af4c7 JB |
376 | break; |
377 | } | |
b6e4c55a JB |
378 | |
379 | scan->suspend_time = 0; | |
380 | scan->max_out_time = cpu_to_le32(200 * 1024); | |
381 | if (!interval) | |
382 | interval = suspend_time; | |
383 | ||
384 | extra = (suspend_time / interval) << 22; | |
385 | scan_suspend_time = (extra | | |
386 | ((suspend_time % interval) * 1024)); | |
387 | scan->suspend_time = cpu_to_le32(scan_suspend_time); | |
388 | IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n", | |
389 | scan_suspend_time, interval); | |
c6baf7fb | 390 | } else if (priv->scan_type == IWL_SCAN_ROC) { |
266af4c7 | 391 | scan->suspend_time = 0; |
c6baf7fb JB |
392 | scan->max_out_time = 0; |
393 | scan->quiet_time = 0; | |
394 | scan->quiet_plcp_th = 0; | |
b6e4c55a JB |
395 | } |
396 | ||
266af4c7 JB |
397 | switch (priv->scan_type) { |
398 | case IWL_SCAN_RADIO_RESET: | |
b6e4c55a | 399 | IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n"); |
266af4c7 JB |
400 | break; |
401 | case IWL_SCAN_NORMAL: | |
402 | if (priv->scan_request->n_ssids) { | |
403 | int i, p = 0; | |
404 | IWL_DEBUG_SCAN(priv, "Kicking off active scan\n"); | |
405 | for (i = 0; i < priv->scan_request->n_ssids; i++) { | |
406 | /* always does wildcard anyway */ | |
407 | if (!priv->scan_request->ssids[i].ssid_len) | |
408 | continue; | |
409 | scan->direct_scan[p].id = WLAN_EID_SSID; | |
410 | scan->direct_scan[p].len = | |
411 | priv->scan_request->ssids[i].ssid_len; | |
412 | memcpy(scan->direct_scan[p].ssid, | |
413 | priv->scan_request->ssids[i].ssid, | |
414 | priv->scan_request->ssids[i].ssid_len); | |
415 | n_probes++; | |
416 | p++; | |
417 | } | |
418 | is_active = true; | |
419 | } else | |
420 | IWL_DEBUG_SCAN(priv, "Start passive scan.\n"); | |
421 | break; | |
c6baf7fb JB |
422 | case IWL_SCAN_ROC: |
423 | IWL_DEBUG_SCAN(priv, "Start ROC scan.\n"); | |
266af4c7 JB |
424 | break; |
425 | } | |
b6e4c55a JB |
426 | |
427 | scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; | |
a194e324 | 428 | scan->tx_cmd.sta_id = ctx->bcast_sta_id; |
b6e4c55a JB |
429 | scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
430 | ||
431 | switch (priv->scan_band) { | |
432 | case IEEE80211_BAND_2GHZ: | |
433 | scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; | |
246ed355 JB |
434 | chan_mod = le32_to_cpu( |
435 | priv->contexts[IWL_RXON_CTX_BSS].active.flags & | |
436 | RXON_FLG_CHANNEL_MODE_MSK) | |
b6e4c55a JB |
437 | >> RXON_FLG_CHANNEL_MODE_POS; |
438 | if (chan_mod == CHANNEL_MODE_PURE_40) { | |
439 | rate = IWL_RATE_6M_PLCP; | |
440 | } else { | |
441 | rate = IWL_RATE_1M_PLCP; | |
442 | rate_flags = RATE_MCS_CCK_MSK; | |
443 | } | |
d44ae69e JB |
444 | /* |
445 | * Internal scans are passive, so we can indiscriminately set | |
446 | * the BT ignore flag on 2.4 GHz since it applies to TX only. | |
447 | */ | |
7cb1b088 WYG |
448 | if (priv->cfg->bt_params && |
449 | priv->cfg->bt_params->advanced_bt_coexist) | |
d44ae69e | 450 | scan->tx_cmd.tx_flags |= TX_CMD_FLG_IGNORE_BT; |
b6e4c55a JB |
451 | break; |
452 | case IEEE80211_BAND_5GHZ: | |
453 | rate = IWL_RATE_6M_PLCP; | |
b6e4c55a JB |
454 | break; |
455 | default: | |
3eecce52 JB |
456 | IWL_WARN(priv, "Invalid scan band\n"); |
457 | return -EIO; | |
b6e4c55a JB |
458 | } |
459 | ||
085fbca2 JB |
460 | /* |
461 | * If active scanning is requested but a certain channel is | |
462 | * marked passive, we can do active scanning if we detect | |
463 | * transmissions. | |
464 | * | |
465 | * There is an issue with some firmware versions that triggers | |
466 | * a sysassert on a "good CRC threshold" of zero (== disabled), | |
467 | * on a radar channel even though this means that we should NOT | |
468 | * send probes. | |
469 | * | |
470 | * The "good CRC threshold" is the number of frames that we | |
471 | * need to receive during our dwell time on a channel before | |
472 | * sending out probes -- setting this to a huge value will | |
473 | * mean we never reach it, but at the same time work around | |
474 | * the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER | |
475 | * here instead of IWL_GOOD_CRC_TH_DISABLED. | |
d2690c0d JB |
476 | * |
477 | * This was fixed in later versions along with some other | |
478 | * scan changes, and the threshold behaves as a flag in those | |
479 | * versions. | |
085fbca2 | 480 | */ |
d2690c0d JB |
481 | if (priv->new_scan_threshold_behaviour) |
482 | scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT : | |
483 | IWL_GOOD_CRC_TH_DISABLED; | |
484 | else | |
485 | scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT : | |
486 | IWL_GOOD_CRC_TH_NEVER; | |
085fbca2 | 487 | |
b6e4c55a JB |
488 | band = priv->scan_band; |
489 | ||
0e1654fa JB |
490 | if (priv->cfg->scan_rx_antennas[band]) |
491 | rx_ant = priv->cfg->scan_rx_antennas[band]; | |
e7cb4955 | 492 | |
cd017f25 SG |
493 | if (band == IEEE80211_BAND_2GHZ && |
494 | priv->cfg->bt_params && | |
495 | priv->cfg->bt_params->advanced_bt_coexist) { | |
496 | /* transmit 2.4 GHz probes only on first antenna */ | |
497 | scan_tx_antennas = first_antenna(scan_tx_antennas); | |
bee008b7 WYG |
498 | } |
499 | ||
0e1654fa JB |
500 | priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band], |
501 | scan_tx_antennas); | |
b6e4c55a JB |
502 | rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]); |
503 | scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags); | |
504 | ||
505 | /* In power save mode use one chain, otherwise use all chains */ | |
63013ae3 | 506 | if (test_bit(STATUS_POWER_PMI, &priv->shrd->status)) { |
b6e4c55a JB |
507 | /* rx_ant has been set to all valid chains previously */ |
508 | active_chains = rx_ant & | |
509 | ((u8)(priv->chain_noise_data.active_chains)); | |
510 | if (!active_chains) | |
511 | active_chains = rx_ant; | |
512 | ||
513 | IWL_DEBUG_SCAN(priv, "chain_noise_data.active_chains: %u\n", | |
514 | priv->chain_noise_data.active_chains); | |
515 | ||
516 | rx_ant = first_antenna(active_chains); | |
517 | } | |
7cb1b088 WYG |
518 | if (priv->cfg->bt_params && |
519 | priv->cfg->bt_params->advanced_bt_coexist && | |
520 | priv->bt_full_concurrent) { | |
bee008b7 WYG |
521 | /* operated as 1x1 in full concurrency mode */ |
522 | rx_ant = first_antenna(rx_ant); | |
523 | } | |
524 | ||
b6e4c55a | 525 | /* MIMO is not used here, but value is required */ |
d6189124 EG |
526 | rx_chain |= |
527 | hw_params(priv).valid_rx_ant << RXON_RX_CHAIN_VALID_POS; | |
b6e4c55a JB |
528 | rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS; |
529 | rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_SEL_POS; | |
530 | rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS; | |
531 | scan->rx_chain = cpu_to_le16(rx_chain); | |
266af4c7 JB |
532 | switch (priv->scan_type) { |
533 | case IWL_SCAN_NORMAL: | |
b6e4c55a JB |
534 | cmd_len = iwl_fill_probe_req(priv, |
535 | (struct ieee80211_mgmt *)scan->data, | |
3a0b9aad | 536 | vif->addr, |
b6e4c55a JB |
537 | priv->scan_request->ie, |
538 | priv->scan_request->ie_len, | |
539 | IWL_MAX_SCAN_SIZE - sizeof(*scan)); | |
266af4c7 JB |
540 | break; |
541 | case IWL_SCAN_RADIO_RESET: | |
c6baf7fb | 542 | case IWL_SCAN_ROC: |
3a0b9aad | 543 | /* use bcast addr, will not be transmitted but must be valid */ |
b6e4c55a JB |
544 | cmd_len = iwl_fill_probe_req(priv, |
545 | (struct ieee80211_mgmt *)scan->data, | |
3a0b9aad | 546 | iwl_bcast_addr, NULL, 0, |
b6e4c55a | 547 | IWL_MAX_SCAN_SIZE - sizeof(*scan)); |
266af4c7 | 548 | break; |
266af4c7 JB |
549 | default: |
550 | BUG(); | |
b6e4c55a JB |
551 | } |
552 | scan->tx_cmd.len = cpu_to_le16(cmd_len); | |
b6e4c55a JB |
553 | |
554 | scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK | | |
555 | RXON_FILTER_BCON_AWARE_MSK); | |
556 | ||
266af4c7 JB |
557 | switch (priv->scan_type) { |
558 | case IWL_SCAN_RADIO_RESET: | |
b6e4c55a | 559 | scan->channel_count = |
1dda6d28 | 560 | iwl_get_single_channel_for_scan(priv, vif, band, |
266af4c7 JB |
561 | (void *)&scan->data[cmd_len]); |
562 | break; | |
563 | case IWL_SCAN_NORMAL: | |
b6e4c55a | 564 | scan->channel_count = |
1dda6d28 | 565 | iwl_get_channels_for_scan(priv, vif, band, |
b6e4c55a | 566 | is_active, n_probes, |
266af4c7 JB |
567 | (void *)&scan->data[cmd_len]); |
568 | break; | |
c6baf7fb | 569 | case IWL_SCAN_ROC: { |
266af4c7 JB |
570 | struct iwl_scan_channel *scan_ch; |
571 | ||
572 | scan->channel_count = 1; | |
573 | ||
574 | scan_ch = (void *)&scan->data[cmd_len]; | |
c6baf7fb | 575 | scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; |
266af4c7 | 576 | scan_ch->channel = |
c6baf7fb | 577 | cpu_to_le16(priv->hw_roc_channel->hw_value); |
266af4c7 | 578 | scan_ch->active_dwell = |
c6baf7fb JB |
579 | scan_ch->passive_dwell = |
580 | cpu_to_le16(priv->hw_roc_duration); | |
266af4c7 JB |
581 | |
582 | /* Set txpower levels to defaults */ | |
583 | scan_ch->dsp_atten = 110; | |
584 | ||
585 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use | |
586 | * power level: | |
587 | * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; | |
588 | */ | |
c6baf7fb | 589 | if (priv->hw_roc_channel->band == IEEE80211_BAND_5GHZ) |
266af4c7 JB |
590 | scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; |
591 | else | |
592 | scan_ch->tx_gain = ((1 << 5) | (5 << 3)); | |
593 | } | |
594 | break; | |
b6e4c55a | 595 | } |
266af4c7 | 596 | |
b6e4c55a JB |
597 | if (scan->channel_count == 0) { |
598 | IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count); | |
3eecce52 | 599 | return -EIO; |
b6e4c55a JB |
600 | } |
601 | ||
3fa50738 | 602 | cmd.len[0] += le16_to_cpu(scan->tx_cmd.len) + |
b6e4c55a | 603 | scan->channel_count * sizeof(struct iwl_scan_channel); |
3fa50738 | 604 | cmd.data[0] = scan; |
4ce7cc2b | 605 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; |
3fa50738 | 606 | scan->len = cpu_to_le16(cmd.len[0]); |
b6e4c55a | 607 | |
1cf26373 | 608 | /* set scan bit here for PAN params */ |
63013ae3 | 609 | set_bit(STATUS_SCAN_HW, &priv->shrd->status); |
1cf26373 | 610 | |
e3f10cea WYG |
611 | ret = iwlagn_set_pan_params(priv); |
612 | if (ret) | |
613 | return ret; | |
b6e4c55a | 614 | |
e6bb4c9c | 615 | ret = iwl_trans_send_cmd(trans(priv), &cmd); |
3eecce52 | 616 | if (ret) { |
63013ae3 | 617 | clear_bit(STATUS_SCAN_HW, &priv->shrd->status); |
e3f10cea | 618 | iwlagn_set_pan_params(priv); |
3eecce52 | 619 | } |
b6e4c55a | 620 | |
3eecce52 | 621 | return ret; |
b6e4c55a | 622 | } |
1fa61b2e JB |
623 | |
624 | int iwlagn_manage_ibss_station(struct iwl_priv *priv, | |
625 | struct ieee80211_vif *vif, bool add) | |
626 | { | |
fd1af15d JB |
627 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
628 | ||
1fa61b2e | 629 | if (add) |
a30e3112 JB |
630 | return iwlagn_add_bssid_station(priv, vif_priv->ctx, |
631 | vif->bss_conf.bssid, | |
632 | &vif_priv->ibss_bssid_sta_id); | |
fd1af15d JB |
633 | return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id, |
634 | vif->bss_conf.bssid); | |
1fa61b2e | 635 | } |
1ff504e0 | 636 | |
716c74b0 WYG |
637 | /** |
638 | * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode | |
639 | * | |
640 | * pre-requirements: | |
641 | * 1. acquire mutex before calling | |
642 | * 2. make sure rf is on and not in exit state | |
643 | */ | |
644 | int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control) | |
645 | { | |
646 | struct iwl_txfifo_flush_cmd flush_cmd; | |
647 | struct iwl_host_cmd cmd = { | |
648 | .id = REPLY_TXFIFO_FLUSH, | |
3fa50738 | 649 | .len = { sizeof(struct iwl_txfifo_flush_cmd), }, |
716c74b0 | 650 | .flags = CMD_SYNC, |
3fa50738 | 651 | .data = { &flush_cmd, }, |
716c74b0 WYG |
652 | }; |
653 | ||
654 | might_sleep(); | |
655 | ||
656 | memset(&flush_cmd, 0, sizeof(flush_cmd)); | |
ecdbe86e WYG |
657 | if (flush_control & BIT(IWL_RXON_CTX_BSS)) |
658 | flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK | | |
f88e0ecc WYG |
659 | IWL_SCD_BE_MSK | IWL_SCD_BK_MSK | |
660 | IWL_SCD_MGMT_MSK; | |
ecdbe86e | 661 | if ((flush_control & BIT(IWL_RXON_CTX_PAN)) && |
7a10e3e4 | 662 | (priv->shrd->valid_contexts != BIT(IWL_RXON_CTX_BSS))) |
f88e0ecc WYG |
663 | flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK | |
664 | IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK | | |
665 | IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK | | |
666 | IWL_PAN_SCD_MULTICAST_MSK; | |
667 | ||
88950758 | 668 | if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE) |
716c74b0 WYG |
669 | flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK; |
670 | ||
671 | IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n", | |
672 | flush_cmd.fifo_control); | |
673 | flush_cmd.flush_control = cpu_to_le16(flush_control); | |
674 | ||
e6bb4c9c | 675 | return iwl_trans_send_cmd(trans(priv), &cmd); |
716c74b0 | 676 | } |
65550636 WYG |
677 | |
678 | void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control) | |
679 | { | |
6ac2f839 | 680 | mutex_lock(&priv->shrd->mutex); |
65550636 | 681 | ieee80211_stop_queues(priv->hw); |
c68744fb | 682 | if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) { |
65550636 WYG |
683 | IWL_ERR(priv, "flush request fail\n"); |
684 | goto done; | |
685 | } | |
686 | IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n"); | |
5f178cd2 | 687 | iwl_trans_wait_tx_queue_empty(trans(priv)); |
65550636 WYG |
688 | done: |
689 | ieee80211_wake_queues(priv->hw); | |
6ac2f839 | 690 | mutex_unlock(&priv->shrd->mutex); |
65550636 | 691 | } |
b6e116e8 WYG |
692 | |
693 | /* | |
694 | * BT coex | |
695 | */ | |
696 | /* | |
697 | * Macros to access the lookup table. | |
698 | * | |
699 | * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req, | |
700 | * wifi_prio, wifi_txrx and wifi_sh_ant_req. | |
701 | * | |
702 | * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH | |
703 | * | |
704 | * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits | |
705 | * one after another in 32-bit registers, and "registers" 0 through 7 contain | |
706 | * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order). | |
707 | * | |
708 | * These macros encode that format. | |
709 | */ | |
710 | #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \ | |
711 | wifi_txrx, wifi_sh_ant_req) \ | |
712 | (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \ | |
713 | (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6)) | |
714 | ||
715 | #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \ | |
716 | lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f))) | |
717 | #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
718 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
719 | (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \ | |
720 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ | |
721 | wifi_sh_ant_req)))) | |
722 | #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
723 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
724 | LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \ | |
725 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ | |
726 | wifi_sh_ant_req)) | |
727 | #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \ | |
728 | wifi_req, wifi_prio, wifi_txrx, \ | |
729 | wifi_sh_ant_req) \ | |
730 | LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \ | |
731 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ | |
732 | wifi_sh_ant_req)) | |
733 | ||
734 | #define LUT_WLAN_KILL_OP(lut, op, val) \ | |
735 | lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e))) | |
736 | #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
737 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
738 | (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
739 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)))) | |
740 | #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
741 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
742 | LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
743 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) | |
744 | #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
745 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
746 | LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
747 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) | |
748 | ||
749 | #define LUT_ANT_SWITCH_OP(lut, op, val) \ | |
750 | lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1))) | |
751 | #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
752 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
753 | (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
754 | wifi_req, wifi_prio, wifi_txrx, \ | |
755 | wifi_sh_ant_req)))) | |
756 | #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
757 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
758 | LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
759 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) | |
760 | #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
761 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
762 | LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
763 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) | |
764 | ||
765 | static const __le32 iwlagn_def_3w_lookup[12] = { | |
766 | cpu_to_le32(0xaaaaaaaa), | |
767 | cpu_to_le32(0xaaaaaaaa), | |
768 | cpu_to_le32(0xaeaaaaaa), | |
769 | cpu_to_le32(0xaaaaaaaa), | |
770 | cpu_to_le32(0xcc00ff28), | |
771 | cpu_to_le32(0x0000aaaa), | |
772 | cpu_to_le32(0xcc00aaaa), | |
773 | cpu_to_le32(0x0000aaaa), | |
774 | cpu_to_le32(0xc0004000), | |
775 | cpu_to_le32(0x00004000), | |
776 | cpu_to_le32(0xf0005000), | |
9a67d761 | 777 | cpu_to_le32(0xf0005000), |
b6e116e8 WYG |
778 | }; |
779 | ||
780 | static const __le32 iwlagn_concurrent_lookup[12] = { | |
781 | cpu_to_le32(0xaaaaaaaa), | |
782 | cpu_to_le32(0xaaaaaaaa), | |
783 | cpu_to_le32(0xaaaaaaaa), | |
784 | cpu_to_le32(0xaaaaaaaa), | |
785 | cpu_to_le32(0xaaaaaaaa), | |
786 | cpu_to_le32(0xaaaaaaaa), | |
787 | cpu_to_le32(0xaaaaaaaa), | |
788 | cpu_to_le32(0xaaaaaaaa), | |
789 | cpu_to_le32(0x00000000), | |
790 | cpu_to_le32(0x00000000), | |
791 | cpu_to_le32(0x00000000), | |
792 | cpu_to_le32(0x00000000), | |
793 | }; | |
794 | ||
795 | void iwlagn_send_advance_bt_config(struct iwl_priv *priv) | |
796 | { | |
6013270a | 797 | struct iwl_basic_bt_cmd basic = { |
b6e116e8 WYG |
798 | .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT, |
799 | .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT, | |
800 | .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT, | |
801 | .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT, | |
802 | }; | |
6013270a WYG |
803 | struct iwl6000_bt_cmd bt_cmd_6000; |
804 | struct iwl2000_bt_cmd bt_cmd_2000; | |
805 | int ret; | |
b6e116e8 WYG |
806 | |
807 | BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) != | |
6013270a WYG |
808 | sizeof(basic.bt3_lookup_table)); |
809 | ||
810 | if (priv->cfg->bt_params) { | |
811 | if (priv->cfg->bt_params->bt_session_2) { | |
812 | bt_cmd_2000.prio_boost = cpu_to_le32( | |
813 | priv->cfg->bt_params->bt_prio_boost); | |
814 | bt_cmd_2000.tx_prio_boost = 0; | |
815 | bt_cmd_2000.rx_prio_boost = 0; | |
816 | } else { | |
817 | bt_cmd_6000.prio_boost = | |
818 | priv->cfg->bt_params->bt_prio_boost; | |
819 | bt_cmd_6000.tx_prio_boost = 0; | |
820 | bt_cmd_6000.rx_prio_boost = 0; | |
821 | } | |
822 | } else { | |
823 | IWL_ERR(priv, "failed to construct BT Coex Config\n"); | |
824 | return; | |
825 | } | |
506aa156 | 826 | |
6013270a WYG |
827 | basic.kill_ack_mask = priv->kill_ack_mask; |
828 | basic.kill_cts_mask = priv->kill_cts_mask; | |
829 | basic.valid = priv->bt_valid; | |
b6e116e8 WYG |
830 | |
831 | /* | |
832 | * Configure BT coex mode to "no coexistence" when the | |
833 | * user disabled BT coexistence, we have no interface | |
834 | * (might be in monitor mode), or the interface is in | |
835 | * IBSS mode (no proper uCode support for coex then). | |
836 | */ | |
b60eec9b WYG |
837 | if (!iwlagn_mod_params.bt_coex_active || |
838 | priv->iw_mode == NL80211_IFTYPE_ADHOC) { | |
6013270a | 839 | basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED; |
b6e116e8 | 840 | } else { |
6013270a | 841 | basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W << |
b6e116e8 | 842 | IWLAGN_BT_FLAG_COEX_MODE_SHIFT; |
207ecc5e MV |
843 | |
844 | if (!priv->bt_enable_pspoll) | |
6013270a | 845 | basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; |
207ecc5e MV |
846 | else |
847 | basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; | |
e366176e | 848 | |
b6e116e8 | 849 | if (priv->bt_ch_announce) |
6013270a | 850 | basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION; |
fa7f1413 | 851 | IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags); |
b6e116e8 | 852 | } |
6013270a | 853 | priv->bt_enable_flag = basic.flags; |
b6e116e8 | 854 | if (priv->bt_full_concurrent) |
6013270a | 855 | memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup, |
b6e116e8 WYG |
856 | sizeof(iwlagn_concurrent_lookup)); |
857 | else | |
6013270a | 858 | memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup, |
b6e116e8 WYG |
859 | sizeof(iwlagn_def_3w_lookup)); |
860 | ||
fa7f1413 | 861 | IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n", |
6013270a | 862 | basic.flags ? "active" : "disabled", |
b6e116e8 WYG |
863 | priv->bt_full_concurrent ? |
864 | "full concurrency" : "3-wire"); | |
865 | ||
6013270a WYG |
866 | if (priv->cfg->bt_params->bt_session_2) { |
867 | memcpy(&bt_cmd_2000.basic, &basic, | |
868 | sizeof(basic)); | |
e6bb4c9c | 869 | ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG, |
e419d62d | 870 | CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000); |
6013270a WYG |
871 | } else { |
872 | memcpy(&bt_cmd_6000.basic, &basic, | |
873 | sizeof(basic)); | |
e6bb4c9c | 874 | ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG, |
e419d62d | 875 | CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000); |
6013270a WYG |
876 | } |
877 | if (ret) | |
b6e116e8 WYG |
878 | IWL_ERR(priv, "failed to send BT Coex Config\n"); |
879 | ||
b6e116e8 WYG |
880 | } |
881 | ||
207ecc5e MV |
882 | void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena) |
883 | { | |
884 | struct iwl_rxon_context *ctx, *found_ctx = NULL; | |
885 | bool found_ap = false; | |
886 | ||
6ac2f839 | 887 | lockdep_assert_held(&priv->shrd->mutex); |
207ecc5e MV |
888 | |
889 | /* Check whether AP or GO mode is active. */ | |
890 | if (rssi_ena) { | |
891 | for_each_context(priv, ctx) { | |
892 | if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP && | |
893 | iwl_is_associated_ctx(ctx)) { | |
894 | found_ap = true; | |
895 | break; | |
896 | } | |
897 | } | |
898 | } | |
899 | ||
900 | /* | |
901 | * If disable was received or If GO/AP mode, disable RSSI | |
902 | * measurements. | |
903 | */ | |
904 | if (!rssi_ena || found_ap) { | |
905 | if (priv->cur_rssi_ctx) { | |
906 | ctx = priv->cur_rssi_ctx; | |
907 | ieee80211_disable_rssi_reports(ctx->vif); | |
908 | priv->cur_rssi_ctx = NULL; | |
909 | } | |
910 | return; | |
911 | } | |
912 | ||
913 | /* | |
914 | * If rssi measurements need to be enabled, consider all cases now. | |
915 | * Figure out how many contexts are active. | |
916 | */ | |
917 | for_each_context(priv, ctx) { | |
918 | if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION && | |
919 | iwl_is_associated_ctx(ctx)) { | |
920 | found_ctx = ctx; | |
921 | break; | |
922 | } | |
923 | } | |
924 | ||
925 | /* | |
926 | * rssi monitor already enabled for the correct interface...nothing | |
927 | * to do. | |
928 | */ | |
929 | if (found_ctx == priv->cur_rssi_ctx) | |
930 | return; | |
931 | ||
932 | /* | |
933 | * Figure out if rssi monitor is currently enabled, and needs | |
934 | * to be changed. If rssi monitor is already enabled, disable | |
935 | * it first else just enable rssi measurements on the | |
936 | * interface found above. | |
937 | */ | |
938 | if (priv->cur_rssi_ctx) { | |
939 | ctx = priv->cur_rssi_ctx; | |
940 | if (ctx->vif) | |
941 | ieee80211_disable_rssi_reports(ctx->vif); | |
942 | } | |
943 | ||
944 | priv->cur_rssi_ctx = found_ctx; | |
945 | ||
946 | if (!found_ctx) | |
947 | return; | |
948 | ||
949 | ieee80211_enable_rssi_reports(found_ctx->vif, | |
950 | IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD, | |
951 | IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD); | |
952 | } | |
953 | ||
954 | static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg) | |
955 | { | |
956 | return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >> | |
957 | BT_UART_MSG_FRAME3SCOESCO_POS; | |
958 | } | |
959 | ||
b6e116e8 WYG |
960 | static void iwlagn_bt_traffic_change_work(struct work_struct *work) |
961 | { | |
962 | struct iwl_priv *priv = | |
963 | container_of(work, struct iwl_priv, bt_traffic_change_work); | |
8bd413e6 | 964 | struct iwl_rxon_context *ctx; |
b6e116e8 WYG |
965 | int smps_request = -1; |
966 | ||
c4197c62 WYG |
967 | if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { |
968 | /* bt coex disabled */ | |
969 | return; | |
970 | } | |
971 | ||
5eda74a4 SG |
972 | /* |
973 | * Note: bt_traffic_load can be overridden by scan complete and | |
974 | * coex profile notifications. Ignore that since only bad consequence | |
975 | * can be not matching debug print with actual state. | |
976 | */ | |
fa7f1413 | 977 | IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n", |
b6e116e8 WYG |
978 | priv->bt_traffic_load); |
979 | ||
980 | switch (priv->bt_traffic_load) { | |
981 | case IWL_BT_COEX_TRAFFIC_LOAD_NONE: | |
f5682c01 WYG |
982 | if (priv->bt_status) |
983 | smps_request = IEEE80211_SMPS_DYNAMIC; | |
984 | else | |
985 | smps_request = IEEE80211_SMPS_AUTOMATIC; | |
b6e116e8 WYG |
986 | break; |
987 | case IWL_BT_COEX_TRAFFIC_LOAD_LOW: | |
988 | smps_request = IEEE80211_SMPS_DYNAMIC; | |
989 | break; | |
990 | case IWL_BT_COEX_TRAFFIC_LOAD_HIGH: | |
991 | case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS: | |
992 | smps_request = IEEE80211_SMPS_STATIC; | |
993 | break; | |
994 | default: | |
995 | IWL_ERR(priv, "Invalid BT traffic load: %d\n", | |
996 | priv->bt_traffic_load); | |
997 | break; | |
998 | } | |
999 | ||
6ac2f839 | 1000 | mutex_lock(&priv->shrd->mutex); |
b6e116e8 | 1001 | |
5eda74a4 SG |
1002 | /* |
1003 | * We can not send command to firmware while scanning. When the scan | |
1004 | * complete we will schedule this work again. We do check with mutex | |
1005 | * locked to prevent new scan request to arrive. We do not check | |
1006 | * STATUS_SCANNING to avoid race when queue_work two times from | |
1007 | * different notifications, but quit and not perform any work at all. | |
1008 | */ | |
63013ae3 | 1009 | if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) |
5eda74a4 SG |
1010 | goto out; |
1011 | ||
6b6db91c | 1012 | iwl_update_chain_flags(priv); |
b6e116e8 | 1013 | |
8bd413e6 | 1014 | if (smps_request != -1) { |
88e9ba76 | 1015 | priv->current_ht_config.smps = smps_request; |
8bd413e6 JB |
1016 | for_each_context(priv, ctx) { |
1017 | if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) | |
1018 | ieee80211_request_smps(ctx->vif, smps_request); | |
1019 | } | |
1020 | } | |
207ecc5e MV |
1021 | |
1022 | /* | |
1023 | * Dynamic PS poll related functionality. Adjust RSSI measurements if | |
1024 | * necessary. | |
1025 | */ | |
1026 | iwlagn_bt_coex_rssi_monitor(priv); | |
5eda74a4 | 1027 | out: |
6ac2f839 | 1028 | mutex_unlock(&priv->shrd->mutex); |
b6e116e8 WYG |
1029 | } |
1030 | ||
207ecc5e MV |
1031 | /* |
1032 | * If BT sco traffic, and RSSI monitor is enabled, move measurements to the | |
1033 | * correct interface or disable it if this is the last interface to be | |
1034 | * removed. | |
1035 | */ | |
1036 | void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv) | |
1037 | { | |
1038 | if (priv->bt_is_sco && | |
1039 | priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS) | |
1040 | iwlagn_bt_adjust_rssi_monitor(priv, true); | |
1041 | else | |
1042 | iwlagn_bt_adjust_rssi_monitor(priv, false); | |
1043 | } | |
1044 | ||
b6e116e8 WYG |
1045 | static void iwlagn_print_uartmsg(struct iwl_priv *priv, |
1046 | struct iwl_bt_uart_msg *uart_msg) | |
1047 | { | |
fa7f1413 | 1048 | IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, " |
b6e116e8 WYG |
1049 | "Update Req = 0x%X", |
1050 | (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >> | |
1051 | BT_UART_MSG_FRAME1MSGTYPE_POS, | |
1052 | (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >> | |
1053 | BT_UART_MSG_FRAME1SSN_POS, | |
1054 | (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >> | |
1055 | BT_UART_MSG_FRAME1UPDATEREQ_POS); | |
1056 | ||
fa7f1413 | 1057 | IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, " |
b6e116e8 WYG |
1058 | "Chl_SeqN = 0x%X, In band = 0x%X", |
1059 | (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >> | |
1060 | BT_UART_MSG_FRAME2OPENCONNECTIONS_POS, | |
1061 | (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >> | |
1062 | BT_UART_MSG_FRAME2TRAFFICLOAD_POS, | |
1063 | (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >> | |
1064 | BT_UART_MSG_FRAME2CHLSEQN_POS, | |
1065 | (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >> | |
1066 | BT_UART_MSG_FRAME2INBAND_POS); | |
1067 | ||
fa7f1413 | 1068 | IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, " |
b6e116e8 WYG |
1069 | "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X", |
1070 | (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >> | |
1071 | BT_UART_MSG_FRAME3SCOESCO_POS, | |
1072 | (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >> | |
1073 | BT_UART_MSG_FRAME3SNIFF_POS, | |
1074 | (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >> | |
1075 | BT_UART_MSG_FRAME3A2DP_POS, | |
1076 | (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >> | |
1077 | BT_UART_MSG_FRAME3ACL_POS, | |
1078 | (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >> | |
1079 | BT_UART_MSG_FRAME3MASTER_POS, | |
1080 | (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >> | |
1081 | BT_UART_MSG_FRAME3OBEX_POS); | |
1082 | ||
fa7f1413 | 1083 | IWL_DEBUG_COEX(priv, "Idle duration = 0x%X", |
b6e116e8 WYG |
1084 | (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >> |
1085 | BT_UART_MSG_FRAME4IDLEDURATION_POS); | |
1086 | ||
fa7f1413 | 1087 | IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, " |
b6e116e8 WYG |
1088 | "eSCO Retransmissions = 0x%X", |
1089 | (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >> | |
1090 | BT_UART_MSG_FRAME5TXACTIVITY_POS, | |
1091 | (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >> | |
1092 | BT_UART_MSG_FRAME5RXACTIVITY_POS, | |
1093 | (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >> | |
1094 | BT_UART_MSG_FRAME5ESCORETRANSMIT_POS); | |
1095 | ||
fa7f1413 | 1096 | IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X", |
b6e116e8 WYG |
1097 | (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >> |
1098 | BT_UART_MSG_FRAME6SNIFFINTERVAL_POS, | |
1099 | (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >> | |
1100 | BT_UART_MSG_FRAME6DISCOVERABLE_POS); | |
1101 | ||
fa7f1413 | 1102 | IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = " |
399f66fd | 1103 | "0x%X, Inquiry = 0x%X, Connectable = 0x%X", |
b6e116e8 WYG |
1104 | (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >> |
1105 | BT_UART_MSG_FRAME7SNIFFACTIVITY_POS, | |
399f66fd WYG |
1106 | (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >> |
1107 | BT_UART_MSG_FRAME7PAGE_POS, | |
1108 | (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >> | |
1109 | BT_UART_MSG_FRAME7INQUIRY_POS, | |
b6e116e8 WYG |
1110 | (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >> |
1111 | BT_UART_MSG_FRAME7CONNECTABLE_POS); | |
1112 | } | |
1113 | ||
506aa156 WYG |
1114 | static void iwlagn_set_kill_msk(struct iwl_priv *priv, |
1115 | struct iwl_bt_uart_msg *uart_msg) | |
b6e116e8 | 1116 | { |
506aa156 | 1117 | u8 kill_msk; |
20407ed8 | 1118 | static const __le32 bt_kill_ack_msg[2] = { |
506aa156 WYG |
1119 | IWLAGN_BT_KILL_ACK_MASK_DEFAULT, |
1120 | IWLAGN_BT_KILL_ACK_CTS_MASK_SCO }; | |
1121 | static const __le32 bt_kill_cts_msg[2] = { | |
1122 | IWLAGN_BT_KILL_CTS_MASK_DEFAULT, | |
1123 | IWLAGN_BT_KILL_ACK_CTS_MASK_SCO }; | |
1124 | ||
1125 | kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) | |
1126 | ? 1 : 0; | |
1127 | if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] || | |
1128 | priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) { | |
b6e116e8 | 1129 | priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK; |
506aa156 WYG |
1130 | priv->kill_ack_mask = bt_kill_ack_msg[kill_msk]; |
1131 | priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK; | |
1132 | priv->kill_cts_mask = bt_kill_cts_msg[kill_msk]; | |
1133 | ||
b6e116e8 | 1134 | /* schedule to send runtime bt_config */ |
74e28e44 | 1135 | queue_work(priv->shrd->workqueue, &priv->bt_runtime_config); |
b6e116e8 | 1136 | } |
b6e116e8 WYG |
1137 | } |
1138 | ||
1139 | void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv, | |
1140 | struct iwl_rx_mem_buffer *rxb) | |
1141 | { | |
1142 | unsigned long flags; | |
1143 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1144 | struct iwl_bt_coex_profile_notif *coex = &pkt->u.bt_coex_profile_notif; | |
b6e116e8 | 1145 | struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg; |
b6e116e8 | 1146 | |
c4197c62 WYG |
1147 | if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) { |
1148 | /* bt coex disabled */ | |
1149 | return; | |
1150 | } | |
1151 | ||
fa7f1413 WYG |
1152 | IWL_DEBUG_COEX(priv, "BT Coex notification:\n"); |
1153 | IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status); | |
1154 | IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load); | |
1155 | IWL_DEBUG_COEX(priv, " CI compliance: %d\n", | |
b6e116e8 WYG |
1156 | coex->bt_ci_compliance); |
1157 | iwlagn_print_uartmsg(priv, uart_msg); | |
1158 | ||
66e863a5 | 1159 | priv->last_bt_traffic_load = priv->bt_traffic_load; |
207ecc5e MV |
1160 | priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg); |
1161 | ||
b6e116e8 WYG |
1162 | if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { |
1163 | if (priv->bt_status != coex->bt_status || | |
66e863a5 | 1164 | priv->last_bt_traffic_load != coex->bt_traffic_load) { |
b6e116e8 WYG |
1165 | if (coex->bt_status) { |
1166 | /* BT on */ | |
1167 | if (!priv->bt_ch_announce) | |
1168 | priv->bt_traffic_load = | |
1169 | IWL_BT_COEX_TRAFFIC_LOAD_HIGH; | |
1170 | else | |
1171 | priv->bt_traffic_load = | |
1172 | coex->bt_traffic_load; | |
1173 | } else { | |
1174 | /* BT off */ | |
1175 | priv->bt_traffic_load = | |
1176 | IWL_BT_COEX_TRAFFIC_LOAD_NONE; | |
1177 | } | |
1178 | priv->bt_status = coex->bt_status; | |
74e28e44 | 1179 | queue_work(priv->shrd->workqueue, |
b6e116e8 WYG |
1180 | &priv->bt_traffic_change_work); |
1181 | } | |
b6e116e8 WYG |
1182 | } |
1183 | ||
506aa156 | 1184 | iwlagn_set_kill_msk(priv, uart_msg); |
b6e116e8 WYG |
1185 | |
1186 | /* FIXME: based on notification, adjust the prio_boost */ | |
1187 | ||
10b15e6f | 1188 | spin_lock_irqsave(&priv->shrd->lock, flags); |
b6e116e8 | 1189 | priv->bt_ci_compliance = coex->bt_ci_compliance; |
10b15e6f | 1190 | spin_unlock_irqrestore(&priv->shrd->lock, flags); |
b6e116e8 WYG |
1191 | } |
1192 | ||
1193 | void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv) | |
1194 | { | |
b6e116e8 WYG |
1195 | priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] = |
1196 | iwlagn_bt_coex_profile_notif; | |
1197 | } | |
1198 | ||
1199 | void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv) | |
1200 | { | |
b6e116e8 WYG |
1201 | INIT_WORK(&priv->bt_traffic_change_work, |
1202 | iwlagn_bt_traffic_change_work); | |
1203 | } | |
1204 | ||
1205 | void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv) | |
1206 | { | |
1207 | cancel_work_sync(&priv->bt_traffic_change_work); | |
1208 | } | |
5de33068 JB |
1209 | |
1210 | static bool is_single_rx_stream(struct iwl_priv *priv) | |
1211 | { | |
1212 | return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC || | |
1213 | priv->current_ht_config.single_chain_sufficient; | |
1214 | } | |
1215 | ||
1216 | #define IWL_NUM_RX_CHAINS_MULTIPLE 3 | |
1217 | #define IWL_NUM_RX_CHAINS_SINGLE 2 | |
1218 | #define IWL_NUM_IDLE_CHAINS_DUAL 2 | |
1219 | #define IWL_NUM_IDLE_CHAINS_SINGLE 1 | |
1220 | ||
1221 | /* | |
1222 | * Determine how many receiver/antenna chains to use. | |
1223 | * | |
1224 | * More provides better reception via diversity. Fewer saves power | |
1225 | * at the expense of throughput, but only when not in powersave to | |
1226 | * start with. | |
1227 | * | |
1228 | * MIMO (dual stream) requires at least 2, but works better with 3. | |
1229 | * This does not determine *which* chains to use, just how many. | |
1230 | */ | |
1231 | static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) | |
1232 | { | |
1233 | if (priv->cfg->bt_params && | |
1234 | priv->cfg->bt_params->advanced_bt_coexist && | |
1235 | (priv->bt_full_concurrent || | |
1236 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { | |
1237 | /* | |
1238 | * only use chain 'A' in bt high traffic load or | |
1239 | * full concurrency mode | |
1240 | */ | |
1241 | return IWL_NUM_RX_CHAINS_SINGLE; | |
1242 | } | |
1243 | /* # of Rx chains to use when expecting MIMO. */ | |
1244 | if (is_single_rx_stream(priv)) | |
1245 | return IWL_NUM_RX_CHAINS_SINGLE; | |
1246 | else | |
1247 | return IWL_NUM_RX_CHAINS_MULTIPLE; | |
1248 | } | |
1249 | ||
1250 | /* | |
1251 | * When we are in power saving mode, unless device support spatial | |
1252 | * multiplexing power save, use the active count for rx chain count. | |
1253 | */ | |
1254 | static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) | |
1255 | { | |
1256 | /* # Rx chains when idling, depending on SMPS mode */ | |
1257 | switch (priv->current_ht_config.smps) { | |
1258 | case IEEE80211_SMPS_STATIC: | |
1259 | case IEEE80211_SMPS_DYNAMIC: | |
1260 | return IWL_NUM_IDLE_CHAINS_SINGLE; | |
1261 | case IEEE80211_SMPS_OFF: | |
1262 | return active_cnt; | |
1263 | default: | |
1264 | WARN(1, "invalid SMPS mode %d", | |
1265 | priv->current_ht_config.smps); | |
1266 | return active_cnt; | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | /* up to 4 chains */ | |
1271 | static u8 iwl_count_chain_bitmap(u32 chain_bitmap) | |
1272 | { | |
1273 | u8 res; | |
1274 | res = (chain_bitmap & BIT(0)) >> 0; | |
1275 | res += (chain_bitmap & BIT(1)) >> 1; | |
1276 | res += (chain_bitmap & BIT(2)) >> 2; | |
1277 | res += (chain_bitmap & BIT(3)) >> 3; | |
1278 | return res; | |
1279 | } | |
1280 | ||
1281 | /** | |
1282 | * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image | |
1283 | * | |
1284 | * Selects how many and which Rx receivers/antennas/chains to use. | |
1285 | * This should not be used for scan command ... it puts data in wrong place. | |
1286 | */ | |
1287 | void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
1288 | { | |
1289 | bool is_single = is_single_rx_stream(priv); | |
63013ae3 | 1290 | bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->shrd->status); |
5de33068 JB |
1291 | u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; |
1292 | u32 active_chains; | |
1293 | u16 rx_chain; | |
1294 | ||
1295 | /* Tell uCode which antennas are actually connected. | |
1296 | * Before first association, we assume all antennas are connected. | |
1297 | * Just after first association, iwl_chain_noise_calibration() | |
1298 | * checks which antennas actually *are* connected. */ | |
1299 | if (priv->chain_noise_data.active_chains) | |
1300 | active_chains = priv->chain_noise_data.active_chains; | |
1301 | else | |
d6189124 | 1302 | active_chains = hw_params(priv).valid_rx_ant; |
5de33068 JB |
1303 | |
1304 | if (priv->cfg->bt_params && | |
1305 | priv->cfg->bt_params->advanced_bt_coexist && | |
1306 | (priv->bt_full_concurrent || | |
1307 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { | |
1308 | /* | |
1309 | * only use chain 'A' in bt high traffic load or | |
1310 | * full concurrency mode | |
1311 | */ | |
1312 | active_chains = first_antenna(active_chains); | |
1313 | } | |
1314 | ||
1315 | rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; | |
1316 | ||
1317 | /* How many receivers should we use? */ | |
1318 | active_rx_cnt = iwl_get_active_rx_chain_count(priv); | |
1319 | idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt); | |
1320 | ||
1321 | ||
1322 | /* correct rx chain count according hw settings | |
1323 | * and chain noise calibration | |
1324 | */ | |
1325 | valid_rx_cnt = iwl_count_chain_bitmap(active_chains); | |
1326 | if (valid_rx_cnt < active_rx_cnt) | |
1327 | active_rx_cnt = valid_rx_cnt; | |
1328 | ||
1329 | if (valid_rx_cnt < idle_rx_cnt) | |
1330 | idle_rx_cnt = valid_rx_cnt; | |
1331 | ||
1332 | rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; | |
1333 | rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; | |
1334 | ||
1335 | ctx->staging.rx_chain = cpu_to_le16(rx_chain); | |
1336 | ||
1337 | if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam) | |
1338 | ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; | |
1339 | else | |
1340 | ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; | |
1341 | ||
1342 | IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n", | |
1343 | ctx->staging.rx_chain, | |
1344 | active_rx_cnt, idle_rx_cnt); | |
1345 | ||
1346 | WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || | |
1347 | active_rx_cnt < idle_rx_cnt); | |
1348 | } | |
facd982e JB |
1349 | |
1350 | u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid) | |
1351 | { | |
1352 | int i; | |
1353 | u8 ind = ant; | |
1354 | ||
1355 | if (priv->band == IEEE80211_BAND_2GHZ && | |
1356 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH) | |
1357 | return 0; | |
1358 | ||
1359 | for (i = 0; i < RATE_ANT_NUM - 1; i++) { | |
1360 | ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; | |
1361 | if (valid & BIT(ind)) | |
1362 | return ind; | |
1363 | } | |
1364 | return ant; | |
1365 | } | |
fed73292 | 1366 | |
7194207c JB |
1367 | /* notification wait support */ |
1368 | void iwlagn_init_notification_wait(struct iwl_priv *priv, | |
1369 | struct iwl_notification_wait *wait_entry, | |
09f18afe | 1370 | u8 cmd, |
7194207c | 1371 | void (*fn)(struct iwl_priv *priv, |
09f18afe JB |
1372 | struct iwl_rx_packet *pkt, |
1373 | void *data), | |
1374 | void *fn_data) | |
7194207c JB |
1375 | { |
1376 | wait_entry->fn = fn; | |
09f18afe | 1377 | wait_entry->fn_data = fn_data; |
7194207c JB |
1378 | wait_entry->cmd = cmd; |
1379 | wait_entry->triggered = false; | |
e74fe233 | 1380 | wait_entry->aborted = false; |
7194207c | 1381 | |
898ed67b WYG |
1382 | spin_lock_bh(&priv->notif_wait_lock); |
1383 | list_add(&wait_entry->list, &priv->notif_waits); | |
1384 | spin_unlock_bh(&priv->notif_wait_lock); | |
7194207c JB |
1385 | } |
1386 | ||
a8674a1e JB |
1387 | int iwlagn_wait_notification(struct iwl_priv *priv, |
1388 | struct iwl_notification_wait *wait_entry, | |
1389 | unsigned long timeout) | |
7194207c JB |
1390 | { |
1391 | int ret; | |
1392 | ||
898ed67b | 1393 | ret = wait_event_timeout(priv->notif_waitq, |
e74fe233 | 1394 | wait_entry->triggered || wait_entry->aborted, |
7194207c JB |
1395 | timeout); |
1396 | ||
898ed67b | 1397 | spin_lock_bh(&priv->notif_wait_lock); |
7194207c | 1398 | list_del(&wait_entry->list); |
898ed67b | 1399 | spin_unlock_bh(&priv->notif_wait_lock); |
7194207c | 1400 | |
e74fe233 JB |
1401 | if (wait_entry->aborted) |
1402 | return -EIO; | |
1403 | ||
a8674a1e JB |
1404 | /* return value is always >= 0 */ |
1405 | if (ret <= 0) | |
1406 | return -ETIMEDOUT; | |
1407 | return 0; | |
7194207c JB |
1408 | } |
1409 | ||
1410 | void iwlagn_remove_notification(struct iwl_priv *priv, | |
1411 | struct iwl_notification_wait *wait_entry) | |
1412 | { | |
898ed67b | 1413 | spin_lock_bh(&priv->notif_wait_lock); |
7194207c | 1414 | list_del(&wait_entry->list); |
898ed67b | 1415 | spin_unlock_bh(&priv->notif_wait_lock); |
7194207c | 1416 | } |