1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 23 * USA 24 * 25 * The full GNU General Public License is included in this distribution 26 * in the file called COPYING. 27 * 28 * Contact Information: 29 * Intel Linux Wireless <linuxwifi@intel.com> 30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31 * 32 * BSD LICENSE 33 * 34 * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. 35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 42 * * Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * * Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in 46 * the documentation and/or other materials provided with the 47 * distribution. 48 * * Neither the name Intel Corporation nor the names of its 49 * contributors may be used to endorse or promote products derived 50 * from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 * 64 *****************************************************************************/ 65 66 #include <linux/ieee80211.h> 67 #include <linux/etherdevice.h> 68 #include <net/mac80211.h> 69 70 #include "fw-api-coex.h" 71 #include "iwl-modparams.h" 72 #include "mvm.h" 73 #include "iwl-debug.h" 74 75 /* 20MHz / 40MHz below / 40Mhz above*/ 76 static const __le64 iwl_ci_mask[][3] = { 77 /* dummy entry for channel 0 */ 78 {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)}, 79 { 80 cpu_to_le64(0x0000001FFFULL), 81 cpu_to_le64(0x0ULL), 82 cpu_to_le64(0x00007FFFFFULL), 83 }, 84 { 85 cpu_to_le64(0x000000FFFFULL), 86 cpu_to_le64(0x0ULL), 87 cpu_to_le64(0x0003FFFFFFULL), 88 }, 89 { 90 cpu_to_le64(0x000003FFFCULL), 91 cpu_to_le64(0x0ULL), 92 cpu_to_le64(0x000FFFFFFCULL), 93 }, 94 { 95 cpu_to_le64(0x00001FFFE0ULL), 96 cpu_to_le64(0x0ULL), 97 cpu_to_le64(0x007FFFFFE0ULL), 98 }, 99 { 100 cpu_to_le64(0x00007FFF80ULL), 101 cpu_to_le64(0x00007FFFFFULL), 102 cpu_to_le64(0x01FFFFFF80ULL), 103 }, 104 { 105 cpu_to_le64(0x0003FFFC00ULL), 106 cpu_to_le64(0x0003FFFFFFULL), 107 cpu_to_le64(0x0FFFFFFC00ULL), 108 }, 109 { 110 cpu_to_le64(0x000FFFF000ULL), 111 cpu_to_le64(0x000FFFFFFCULL), 112 cpu_to_le64(0x3FFFFFF000ULL), 113 }, 114 { 115 cpu_to_le64(0x007FFF8000ULL), 116 cpu_to_le64(0x007FFFFFE0ULL), 117 cpu_to_le64(0xFFFFFF8000ULL), 118 }, 119 { 120 cpu_to_le64(0x01FFFE0000ULL), 121 cpu_to_le64(0x01FFFFFF80ULL), 122 cpu_to_le64(0xFFFFFE0000ULL), 123 }, 124 { 125 cpu_to_le64(0x0FFFF00000ULL), 126 cpu_to_le64(0x0FFFFFFC00ULL), 127 cpu_to_le64(0x0ULL), 128 }, 129 { 130 cpu_to_le64(0x3FFFC00000ULL), 131 cpu_to_le64(0x3FFFFFF000ULL), 132 cpu_to_le64(0x0) 133 }, 134 { 135 cpu_to_le64(0xFFFE000000ULL), 136 cpu_to_le64(0xFFFFFF8000ULL), 137 cpu_to_le64(0x0) 138 }, 139 { 140 cpu_to_le64(0xFFF8000000ULL), 141 cpu_to_le64(0xFFFFFE0000ULL), 142 cpu_to_le64(0x0) 143 }, 144 { 145 cpu_to_le64(0xFFC0000000ULL), 146 cpu_to_le64(0x0ULL), 147 cpu_to_le64(0x0ULL) 148 }, 149 }; 150 151 struct corunning_block_luts { 152 u8 range; 153 __le32 lut20[BT_COEX_CORUN_LUT_SIZE]; 154 }; 155 156 /* 157 * Ranges for the antenna coupling calibration / co-running block LUT: 158 * LUT0: [ 0, 12[ 159 * LUT1: [12, 20[ 160 * LUT2: [20, 21[ 161 * LUT3: [21, 23[ 162 * LUT4: [23, 27[ 163 * LUT5: [27, 30[ 164 * LUT6: [30, 32[ 165 * LUT7: [32, 33[ 166 * LUT8: [33, - [ 167 */ 168 static const struct corunning_block_luts antenna_coupling_ranges[] = { 169 { 170 .range = 0, 171 .lut20 = { 172 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 173 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 174 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 175 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 176 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 177 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 178 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 179 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 180 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 181 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 182 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 183 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 184 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 185 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 186 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 187 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 188 }, 189 }, 190 { 191 .range = 12, 192 .lut20 = { 193 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 194 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 195 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 196 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 197 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 198 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 199 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 200 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 201 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 202 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 203 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 204 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 205 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 206 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 207 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 208 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 209 }, 210 }, 211 { 212 .range = 20, 213 .lut20 = { 214 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 215 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 216 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 217 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 218 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 219 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 220 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 221 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 222 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 223 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 224 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 225 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 226 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 227 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 228 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 229 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 230 }, 231 }, 232 { 233 .range = 21, 234 .lut20 = { 235 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 236 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 237 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 238 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 239 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 240 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 241 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 242 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 243 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 244 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 245 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 246 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 247 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 248 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 249 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 250 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 251 }, 252 }, 253 { 254 .range = 23, 255 .lut20 = { 256 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 257 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 258 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 259 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 260 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 261 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 262 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 263 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 264 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 265 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 266 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 267 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 268 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 269 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 270 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 271 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 272 }, 273 }, 274 { 275 .range = 27, 276 .lut20 = { 277 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 278 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 279 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 280 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 281 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 282 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 283 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 284 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 285 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 286 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 287 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 288 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 289 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 290 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 291 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 292 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 293 }, 294 }, 295 { 296 .range = 30, 297 .lut20 = { 298 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 299 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 300 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 301 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 302 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 303 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 304 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 305 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 306 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 307 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 308 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 309 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 310 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 311 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 312 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 313 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 314 }, 315 }, 316 { 317 .range = 32, 318 .lut20 = { 319 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 320 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 321 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 322 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 323 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 324 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 325 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 326 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 327 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 328 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 329 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 330 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 331 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 332 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 333 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 334 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 335 }, 336 }, 337 { 338 .range = 33, 339 .lut20 = { 340 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 341 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 342 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 343 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 344 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 345 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 346 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 347 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 348 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 349 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 350 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 351 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 352 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 353 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 354 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 355 cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), 356 }, 357 }, 358 }; 359 360 static enum iwl_bt_coex_lut_type 361 iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif) 362 { 363 struct ieee80211_chanctx_conf *chanctx_conf; 364 enum iwl_bt_coex_lut_type ret; 365 u16 phy_ctx_id; 366 u32 primary_ch_phy_id, secondary_ch_phy_id; 367 368 /* 369 * Checking that we hold mvm->mutex is a good idea, but the rate 370 * control can't acquire the mutex since it runs in Tx path. 371 * So this is racy in that case, but in the worst case, the AMPDU 372 * size limit will be wrong for a short time which is not a big 373 * issue. 374 */ 375 376 rcu_read_lock(); 377 378 chanctx_conf = rcu_dereference(vif->chanctx_conf); 379 380 if (!chanctx_conf || 381 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ) { 382 rcu_read_unlock(); 383 return BT_COEX_INVALID_LUT; 384 } 385 386 ret = BT_COEX_TX_DIS_LUT; 387 388 if (mvm->cfg->bt_shared_single_ant) { 389 rcu_read_unlock(); 390 return ret; 391 } 392 393 phy_ctx_id = *((u16 *)chanctx_conf->drv_priv); 394 primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id); 395 secondary_ch_phy_id = 396 le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id); 397 398 if (primary_ch_phy_id == phy_ctx_id) 399 ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut); 400 else if (secondary_ch_phy_id == phy_ctx_id) 401 ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut); 402 /* else - default = TX TX disallowed */ 403 404 rcu_read_unlock(); 405 406 return ret; 407 } 408 409 int iwl_send_bt_init_conf(struct iwl_mvm *mvm) 410 { 411 struct iwl_bt_coex_cmd bt_cmd = {}; 412 u32 mode; 413 414 lockdep_assert_held(&mvm->mutex); 415 416 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) { 417 switch (mvm->bt_force_ant_mode) { 418 case BT_FORCE_ANT_BT: 419 mode = BT_COEX_BT; 420 break; 421 case BT_FORCE_ANT_WIFI: 422 mode = BT_COEX_WIFI; 423 break; 424 default: 425 WARN_ON(1); 426 mode = 0; 427 } 428 429 bt_cmd.mode = cpu_to_le32(mode); 430 goto send_cmd; 431 } 432 433 mode = iwlwifi_mod_params.bt_coex_active ? BT_COEX_NW : BT_COEX_DISABLE; 434 bt_cmd.mode = cpu_to_le32(mode); 435 436 if (IWL_MVM_BT_COEX_SYNC2SCO) 437 bt_cmd.enabled_modules |= 438 cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED); 439 440 if (iwl_mvm_bt_is_plcr_supported(mvm)) 441 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_CORUN_ENABLED); 442 443 if (iwl_mvm_is_mplut_supported(mvm)) 444 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED); 445 446 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET); 447 448 send_cmd: 449 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 450 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 451 452 return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd); 453 } 454 455 static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id, 456 bool enable) 457 { 458 struct iwl_bt_coex_reduced_txp_update_cmd cmd = {}; 459 struct iwl_mvm_sta *mvmsta; 460 u32 value; 461 int ret; 462 463 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 464 if (!mvmsta) 465 return 0; 466 467 /* nothing to do */ 468 if (mvmsta->bt_reduced_txpower == enable) 469 return 0; 470 471 value = mvmsta->sta_id; 472 473 if (enable) 474 value |= BT_REDUCED_TX_POWER_BIT; 475 476 IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n", 477 enable ? "en" : "dis", sta_id); 478 479 cmd.reduced_txp = cpu_to_le32(value); 480 mvmsta->bt_reduced_txpower = enable; 481 482 ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP, CMD_ASYNC, 483 sizeof(cmd), &cmd); 484 485 return ret; 486 } 487 488 struct iwl_bt_iterator_data { 489 struct iwl_bt_coex_profile_notif *notif; 490 struct iwl_mvm *mvm; 491 struct ieee80211_chanctx_conf *primary; 492 struct ieee80211_chanctx_conf *secondary; 493 bool primary_ll; 494 }; 495 496 static inline 497 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm, 498 struct ieee80211_vif *vif, 499 bool enable, int rssi) 500 { 501 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 502 503 mvmvif->bf_data.last_bt_coex_event = rssi; 504 mvmvif->bf_data.bt_coex_max_thold = 505 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0; 506 mvmvif->bf_data.bt_coex_min_thold = 507 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0; 508 } 509 510 /* must be called under rcu_read_lock */ 511 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac, 512 struct ieee80211_vif *vif) 513 { 514 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 515 struct iwl_bt_iterator_data *data = _data; 516 struct iwl_mvm *mvm = data->mvm; 517 struct ieee80211_chanctx_conf *chanctx_conf; 518 /* default smps_mode is AUTOMATIC - only used for client modes */ 519 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 520 u32 bt_activity_grading; 521 int ave_rssi; 522 523 lockdep_assert_held(&mvm->mutex); 524 525 switch (vif->type) { 526 case NL80211_IFTYPE_STATION: 527 break; 528 case NL80211_IFTYPE_AP: 529 if (!mvmvif->ap_ibss_active) 530 return; 531 break; 532 default: 533 return; 534 } 535 536 chanctx_conf = rcu_dereference(vif->chanctx_conf); 537 538 /* If channel context is invalid or not on 2.4GHz .. */ 539 if ((!chanctx_conf || 540 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) { 541 if (vif->type == NL80211_IFTYPE_STATION) { 542 /* ... relax constraints and disable rssi events */ 543 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 544 smps_mode); 545 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, 546 false); 547 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 548 } 549 return; 550 } 551 552 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading); 553 if (bt_activity_grading >= BT_HIGH_TRAFFIC) 554 smps_mode = IEEE80211_SMPS_STATIC; 555 else if (bt_activity_grading >= BT_LOW_TRAFFIC) 556 smps_mode = IEEE80211_SMPS_DYNAMIC; 557 558 /* relax SMPS constraints for next association */ 559 if (!vif->bss_conf.assoc) 560 smps_mode = IEEE80211_SMPS_AUTOMATIC; 561 562 if (mvmvif->phy_ctxt && 563 IWL_COEX_IS_RRC_ON(mvm->last_bt_notif.ttc_rrc_status, 564 mvmvif->phy_ctxt->id)) 565 smps_mode = IEEE80211_SMPS_AUTOMATIC; 566 567 IWL_DEBUG_COEX(data->mvm, 568 "mac %d: bt_activity_grading %d smps_req %d\n", 569 mvmvif->id, bt_activity_grading, smps_mode); 570 571 if (vif->type == NL80211_IFTYPE_STATION) 572 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 573 smps_mode); 574 575 /* low latency is always primary */ 576 if (iwl_mvm_vif_low_latency(mvmvif)) { 577 data->primary_ll = true; 578 579 data->secondary = data->primary; 580 data->primary = chanctx_conf; 581 } 582 583 if (vif->type == NL80211_IFTYPE_AP) { 584 if (!mvmvif->ap_ibss_active) 585 return; 586 587 if (chanctx_conf == data->primary) 588 return; 589 590 if (!data->primary_ll) { 591 /* 592 * downgrade the current primary no matter what its 593 * type is. 594 */ 595 data->secondary = data->primary; 596 data->primary = chanctx_conf; 597 } else { 598 /* there is low latency vif - we will be secondary */ 599 data->secondary = chanctx_conf; 600 } 601 return; 602 } 603 604 /* 605 * STA / P2P Client, try to be primary if first vif. If we are in low 606 * latency mode, we are already in primary and just don't do much 607 */ 608 if (!data->primary || data->primary == chanctx_conf) 609 data->primary = chanctx_conf; 610 else if (!data->secondary) 611 /* if secondary is not NULL, it might be a GO */ 612 data->secondary = chanctx_conf; 613 614 /* 615 * don't reduce the Tx power if one of these is true: 616 * we are in LOOSE 617 * single share antenna product 618 * BT is active 619 * we are associated 620 */ 621 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT || 622 mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc || 623 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) { 624 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false); 625 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 626 return; 627 } 628 629 /* try to get the avg rssi from fw */ 630 ave_rssi = mvmvif->bf_data.ave_beacon_signal; 631 632 /* if the RSSI isn't valid, fake it is very low */ 633 if (!ave_rssi) 634 ave_rssi = -100; 635 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) { 636 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true)) 637 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 638 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) { 639 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false)) 640 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 641 } 642 643 /* Begin to monitor the RSSI: it may influence the reduced Tx power */ 644 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi); 645 } 646 647 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm) 648 { 649 struct iwl_bt_iterator_data data = { 650 .mvm = mvm, 651 .notif = &mvm->last_bt_notif, 652 }; 653 struct iwl_bt_coex_ci_cmd cmd = {}; 654 u8 ci_bw_idx; 655 656 /* Ignore updates if we are in force mode */ 657 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 658 return; 659 660 rcu_read_lock(); 661 ieee80211_iterate_active_interfaces_atomic( 662 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 663 iwl_mvm_bt_notif_iterator, &data); 664 665 if (data.primary) { 666 struct ieee80211_chanctx_conf *chan = data.primary; 667 if (WARN_ON(!chan->def.chan)) { 668 rcu_read_unlock(); 669 return; 670 } 671 672 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 673 ci_bw_idx = 0; 674 } else { 675 if (chan->def.center_freq1 > 676 chan->def.chan->center_freq) 677 ci_bw_idx = 2; 678 else 679 ci_bw_idx = 1; 680 } 681 682 cmd.bt_primary_ci = 683 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 684 cmd.primary_ch_phy_id = 685 cpu_to_le32(*((u16 *)data.primary->drv_priv)); 686 } 687 688 if (data.secondary) { 689 struct ieee80211_chanctx_conf *chan = data.secondary; 690 if (WARN_ON(!data.secondary->def.chan)) { 691 rcu_read_unlock(); 692 return; 693 } 694 695 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 696 ci_bw_idx = 0; 697 } else { 698 if (chan->def.center_freq1 > 699 chan->def.chan->center_freq) 700 ci_bw_idx = 2; 701 else 702 ci_bw_idx = 1; 703 } 704 705 cmd.bt_secondary_ci = 706 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 707 cmd.secondary_ch_phy_id = 708 cpu_to_le32(*((u16 *)data.secondary->drv_priv)); 709 } 710 711 rcu_read_unlock(); 712 713 /* Don't spam the fw with the same command over and over */ 714 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) { 715 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0, 716 sizeof(cmd), &cmd)) 717 IWL_ERR(mvm, "Failed to send BT_CI cmd\n"); 718 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd)); 719 } 720 } 721 722 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm, 723 struct iwl_rx_cmd_buffer *rxb) 724 { 725 struct iwl_rx_packet *pkt = rxb_addr(rxb); 726 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data; 727 728 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n"); 729 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance); 730 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n", 731 le32_to_cpu(notif->primary_ch_lut)); 732 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n", 733 le32_to_cpu(notif->secondary_ch_lut)); 734 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n", 735 le32_to_cpu(notif->bt_activity_grading)); 736 737 /* remember this notification for future use: rssi fluctuations */ 738 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif)); 739 740 iwl_mvm_bt_coex_notif_handle(mvm); 741 } 742 743 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 744 enum ieee80211_rssi_event_data rssi_event) 745 { 746 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 747 int ret; 748 749 lockdep_assert_held(&mvm->mutex); 750 751 /* Ignore updates if we are in force mode */ 752 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 753 return; 754 755 /* 756 * Rssi update while not associated - can happen since the statistics 757 * are handled asynchronously 758 */ 759 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) 760 return; 761 762 /* No BT - reports should be disabled */ 763 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) 764 return; 765 766 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid, 767 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW"); 768 769 /* 770 * Check if rssi is good enough for reduced Tx power, but not in loose 771 * scheme. 772 */ 773 if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant || 774 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT) 775 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, 776 false); 777 else 778 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true); 779 780 if (ret) 781 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n"); 782 } 783 784 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) 785 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200) 786 787 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm, 788 struct ieee80211_sta *sta) 789 { 790 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 791 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 792 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt; 793 enum iwl_bt_coex_lut_type lut_type; 794 795 if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id)) 796 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 797 798 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 799 BT_HIGH_TRAFFIC) 800 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 801 802 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 803 804 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT) 805 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 806 807 /* tight coex, high bt traffic, reduce AGG time limit */ 808 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT; 809 } 810 811 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm, 812 struct ieee80211_sta *sta) 813 { 814 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 815 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 816 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt; 817 enum iwl_bt_coex_lut_type lut_type; 818 819 if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id)) 820 return true; 821 822 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 823 BT_HIGH_TRAFFIC) 824 return true; 825 826 /* 827 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas 828 * since BT is already killed. 829 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while 830 * we Tx. 831 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO. 832 */ 833 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 834 return lut_type != BT_COEX_LOOSE_LUT; 835 } 836 837 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant) 838 { 839 /* there is no other antenna, shared antenna is always available */ 840 if (mvm->cfg->bt_shared_single_ant) 841 return true; 842 843 if (ant & mvm->cfg->non_shared_ant) 844 return true; 845 846 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 847 BT_HIGH_TRAFFIC; 848 } 849 850 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm) 851 { 852 /* there is no other antenna, shared antenna is always available */ 853 if (mvm->cfg->bt_shared_single_ant) 854 return true; 855 856 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC; 857 } 858 859 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm, 860 enum nl80211_band band) 861 { 862 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading); 863 864 if (band != NL80211_BAND_2GHZ) 865 return false; 866 867 return bt_activity >= BT_LOW_TRAFFIC; 868 } 869 870 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, 871 struct ieee80211_tx_info *info, u8 ac) 872 { 873 __le16 fc = hdr->frame_control; 874 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm); 875 876 if (info->band != NL80211_BAND_2GHZ) 877 return 0; 878 879 if (unlikely(mvm->bt_tx_prio)) 880 return mvm->bt_tx_prio - 1; 881 882 if (likely(ieee80211_is_data(fc))) { 883 if (likely(ieee80211_is_data_qos(fc))) { 884 switch (ac) { 885 case IEEE80211_AC_BE: 886 return mplut_enabled ? 1 : 0; 887 case IEEE80211_AC_VI: 888 return mplut_enabled ? 2 : 3; 889 case IEEE80211_AC_VO: 890 return 3; 891 default: 892 return 0; 893 } 894 } else if (is_multicast_ether_addr(hdr->addr1)) { 895 return 3; 896 } else 897 return 0; 898 } else if (ieee80211_is_mgmt(fc)) { 899 return ieee80211_is_disassoc(fc) ? 0 : 3; 900 } else if (ieee80211_is_ctl(fc)) { 901 /* ignore cfend and cfendack frames as we never send those */ 902 return 3; 903 } 904 905 return 0; 906 } 907 908 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm) 909 { 910 iwl_mvm_bt_coex_notif_handle(mvm); 911 } 912 913 void iwl_mvm_rx_ant_coupling_notif(struct iwl_mvm *mvm, 914 struct iwl_rx_cmd_buffer *rxb) 915 { 916 struct iwl_rx_packet *pkt = rxb_addr(rxb); 917 u32 ant_isolation = le32_to_cpup((void *)pkt->data); 918 struct iwl_bt_coex_corun_lut_update_cmd cmd = {}; 919 u8 __maybe_unused lower_bound, upper_bound; 920 u8 lut; 921 922 if (!iwl_mvm_bt_is_plcr_supported(mvm)) 923 return; 924 925 lockdep_assert_held(&mvm->mutex); 926 927 /* Ignore updates if we are in force mode */ 928 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 929 return; 930 931 if (ant_isolation == mvm->last_ant_isol) 932 return; 933 934 for (lut = 0; lut < ARRAY_SIZE(antenna_coupling_ranges) - 1; lut++) 935 if (ant_isolation < antenna_coupling_ranges[lut + 1].range) 936 break; 937 938 lower_bound = antenna_coupling_ranges[lut].range; 939 940 if (lut < ARRAY_SIZE(antenna_coupling_ranges) - 1) 941 upper_bound = antenna_coupling_ranges[lut + 1].range; 942 else 943 upper_bound = antenna_coupling_ranges[lut].range; 944 945 IWL_DEBUG_COEX(mvm, "Antenna isolation=%d in range [%d,%d[, lut=%d\n", 946 ant_isolation, lower_bound, upper_bound, lut); 947 948 mvm->last_ant_isol = ant_isolation; 949 950 if (mvm->last_corun_lut == lut) 951 return; 952 953 mvm->last_corun_lut = lut; 954 955 /* For the moment, use the same LUT for 20GHz and 40GHz */ 956 memcpy(&cmd.corun_lut20, antenna_coupling_ranges[lut].lut20, 957 sizeof(cmd.corun_lut20)); 958 959 memcpy(&cmd.corun_lut40, antenna_coupling_ranges[lut].lut20, 960 sizeof(cmd.corun_lut40)); 961 962 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_CORUN_LUT, 0, 963 sizeof(cmd), &cmd)) 964 IWL_ERR(mvm, 965 "failed to send BT_COEX_UPDATE_CORUN_LUT command\n"); 966 } 967