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) 2008 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2018 - 2019 Intel Corporation 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * The full GNU General Public License is included in this distribution 22 * in the file called COPYING. 23 * 24 * Contact Information: 25 * Intel Linux Wireless <linuxwifi@intel.com> 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27 * 28 * BSD LICENSE 29 * 30 * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. 31 * Copyright(c) 2015 Intel Mobile Communications GmbH 32 * Copyright(c) 2018 - 2019 Intel Corporation 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 39 * * Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * * Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in 43 * the documentation and/or other materials provided with the 44 * distribution. 45 * * Neither the name Intel Corporation nor the names of its 46 * contributors may be used to endorse or promote products derived 47 * from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 *****************************************************************************/ 61 #include <linux/types.h> 62 #include <linux/slab.h> 63 #include <linux/export.h> 64 #include "iwl-drv.h" 65 #include "iwl-modparams.h" 66 #include "iwl-eeprom-parse.h" 67 68 /* EEPROM offset definitions */ 69 70 /* indirect access definitions */ 71 #define ADDRESS_MSK 0x0000FFFF 72 #define INDIRECT_TYPE_MSK 0x000F0000 73 #define INDIRECT_HOST 0x00010000 74 #define INDIRECT_GENERAL 0x00020000 75 #define INDIRECT_REGULATORY 0x00030000 76 #define INDIRECT_CALIBRATION 0x00040000 77 #define INDIRECT_PROCESS_ADJST 0x00050000 78 #define INDIRECT_OTHERS 0x00060000 79 #define INDIRECT_TXP_LIMIT 0x00070000 80 #define INDIRECT_TXP_LIMIT_SIZE 0x00080000 81 #define INDIRECT_ADDRESS 0x00100000 82 83 /* corresponding link offsets in EEPROM */ 84 #define EEPROM_LINK_HOST (2*0x64) 85 #define EEPROM_LINK_GENERAL (2*0x65) 86 #define EEPROM_LINK_REGULATORY (2*0x66) 87 #define EEPROM_LINK_CALIBRATION (2*0x67) 88 #define EEPROM_LINK_PROCESS_ADJST (2*0x68) 89 #define EEPROM_LINK_OTHERS (2*0x69) 90 #define EEPROM_LINK_TXP_LIMIT (2*0x6a) 91 #define EEPROM_LINK_TXP_LIMIT_SIZE (2*0x6b) 92 93 /* General */ 94 #define EEPROM_DEVICE_ID (2*0x08) /* 2 bytes */ 95 #define EEPROM_SUBSYSTEM_ID (2*0x0A) /* 2 bytes */ 96 #define EEPROM_MAC_ADDRESS (2*0x15) /* 6 bytes */ 97 #define EEPROM_BOARD_REVISION (2*0x35) /* 2 bytes */ 98 #define EEPROM_BOARD_PBA_NUMBER (2*0x3B+1) /* 9 bytes */ 99 #define EEPROM_VERSION (2*0x44) /* 2 bytes */ 100 #define EEPROM_SKU_CAP (2*0x45) /* 2 bytes */ 101 #define EEPROM_OEM_MODE (2*0x46) /* 2 bytes */ 102 #define EEPROM_RADIO_CONFIG (2*0x48) /* 2 bytes */ 103 #define EEPROM_NUM_MAC_ADDRESS (2*0x4C) /* 2 bytes */ 104 105 /* calibration */ 106 struct iwl_eeprom_calib_hdr { 107 u8 version; 108 u8 pa_type; 109 __le16 voltage; 110 } __packed; 111 112 #define EEPROM_CALIB_ALL (INDIRECT_ADDRESS | INDIRECT_CALIBRATION) 113 #define EEPROM_XTAL ((2*0x128) | EEPROM_CALIB_ALL) 114 115 /* temperature */ 116 #define EEPROM_KELVIN_TEMPERATURE ((2*0x12A) | EEPROM_CALIB_ALL) 117 #define EEPROM_RAW_TEMPERATURE ((2*0x12B) | EEPROM_CALIB_ALL) 118 119 /* SKU Capabilities (actual values from EEPROM definition) */ 120 enum eeprom_sku_bits { 121 EEPROM_SKU_CAP_BAND_24GHZ = BIT(4), 122 EEPROM_SKU_CAP_BAND_52GHZ = BIT(5), 123 EEPROM_SKU_CAP_11N_ENABLE = BIT(6), 124 EEPROM_SKU_CAP_AMT_ENABLE = BIT(7), 125 EEPROM_SKU_CAP_IPAN_ENABLE = BIT(8) 126 }; 127 128 /* radio config bits (actual values from EEPROM definition) */ 129 #define EEPROM_RF_CFG_TYPE_MSK(x) (x & 0x3) /* bits 0-1 */ 130 #define EEPROM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */ 131 #define EEPROM_RF_CFG_DASH_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */ 132 #define EEPROM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */ 133 #define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */ 134 #define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */ 135 136 137 /* 138 * EEPROM bands 139 * These are the channel numbers from each band in the order 140 * that they are stored in the EEPROM band information. Note 141 * that EEPROM bands aren't the same as mac80211 bands, and 142 * there are even special "ht40 bands" in the EEPROM. 143 */ 144 static const u8 iwl_eeprom_band_1[14] = { /* 2.4 GHz */ 145 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 146 }; 147 148 static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */ 149 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 150 }; 151 152 static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */ 153 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 154 }; 155 156 static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */ 157 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 158 }; 159 160 static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */ 161 145, 149, 153, 157, 161, 165 162 }; 163 164 static const u8 iwl_eeprom_band_6[] = { /* 2.4 ht40 channel */ 165 1, 2, 3, 4, 5, 6, 7 166 }; 167 168 static const u8 iwl_eeprom_band_7[] = { /* 5.2 ht40 channel */ 169 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 170 }; 171 172 #define IWL_NUM_CHANNELS (ARRAY_SIZE(iwl_eeprom_band_1) + \ 173 ARRAY_SIZE(iwl_eeprom_band_2) + \ 174 ARRAY_SIZE(iwl_eeprom_band_3) + \ 175 ARRAY_SIZE(iwl_eeprom_band_4) + \ 176 ARRAY_SIZE(iwl_eeprom_band_5)) 177 178 /* rate data (static) */ 179 static struct ieee80211_rate iwl_cfg80211_rates[] = { 180 { .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, }, 181 { .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1, 182 .flags = IEEE80211_RATE_SHORT_PREAMBLE, }, 183 { .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2, 184 .flags = IEEE80211_RATE_SHORT_PREAMBLE, }, 185 { .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3, 186 .flags = IEEE80211_RATE_SHORT_PREAMBLE, }, 187 { .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, }, 188 { .bitrate = 9 * 10, .hw_value = 5, .hw_value_short = 5, }, 189 { .bitrate = 12 * 10, .hw_value = 6, .hw_value_short = 6, }, 190 { .bitrate = 18 * 10, .hw_value = 7, .hw_value_short = 7, }, 191 { .bitrate = 24 * 10, .hw_value = 8, .hw_value_short = 8, }, 192 { .bitrate = 36 * 10, .hw_value = 9, .hw_value_short = 9, }, 193 { .bitrate = 48 * 10, .hw_value = 10, .hw_value_short = 10, }, 194 { .bitrate = 54 * 10, .hw_value = 11, .hw_value_short = 11, }, 195 }; 196 #define RATES_24_OFFS 0 197 #define N_RATES_24 ARRAY_SIZE(iwl_cfg80211_rates) 198 #define RATES_52_OFFS 4 199 #define N_RATES_52 (N_RATES_24 - RATES_52_OFFS) 200 201 /* EEPROM reading functions */ 202 203 static u16 iwl_eeprom_query16(const u8 *eeprom, size_t eeprom_size, int offset) 204 { 205 if (WARN_ON(offset + sizeof(u16) > eeprom_size)) 206 return 0; 207 return le16_to_cpup((__le16 *)(eeprom + offset)); 208 } 209 210 static u32 eeprom_indirect_address(const u8 *eeprom, size_t eeprom_size, 211 u32 address) 212 { 213 u16 offset = 0; 214 215 if ((address & INDIRECT_ADDRESS) == 0) 216 return address; 217 218 switch (address & INDIRECT_TYPE_MSK) { 219 case INDIRECT_HOST: 220 offset = iwl_eeprom_query16(eeprom, eeprom_size, 221 EEPROM_LINK_HOST); 222 break; 223 case INDIRECT_GENERAL: 224 offset = iwl_eeprom_query16(eeprom, eeprom_size, 225 EEPROM_LINK_GENERAL); 226 break; 227 case INDIRECT_REGULATORY: 228 offset = iwl_eeprom_query16(eeprom, eeprom_size, 229 EEPROM_LINK_REGULATORY); 230 break; 231 case INDIRECT_TXP_LIMIT: 232 offset = iwl_eeprom_query16(eeprom, eeprom_size, 233 EEPROM_LINK_TXP_LIMIT); 234 break; 235 case INDIRECT_TXP_LIMIT_SIZE: 236 offset = iwl_eeprom_query16(eeprom, eeprom_size, 237 EEPROM_LINK_TXP_LIMIT_SIZE); 238 break; 239 case INDIRECT_CALIBRATION: 240 offset = iwl_eeprom_query16(eeprom, eeprom_size, 241 EEPROM_LINK_CALIBRATION); 242 break; 243 case INDIRECT_PROCESS_ADJST: 244 offset = iwl_eeprom_query16(eeprom, eeprom_size, 245 EEPROM_LINK_PROCESS_ADJST); 246 break; 247 case INDIRECT_OTHERS: 248 offset = iwl_eeprom_query16(eeprom, eeprom_size, 249 EEPROM_LINK_OTHERS); 250 break; 251 default: 252 WARN_ON(1); 253 break; 254 } 255 256 /* translate the offset from words to byte */ 257 return (address & ADDRESS_MSK) + (offset << 1); 258 } 259 260 static const u8 *iwl_eeprom_query_addr(const u8 *eeprom, size_t eeprom_size, 261 u32 offset) 262 { 263 u32 address = eeprom_indirect_address(eeprom, eeprom_size, offset); 264 265 if (WARN_ON(address >= eeprom_size)) 266 return NULL; 267 268 return &eeprom[address]; 269 } 270 271 static int iwl_eeprom_read_calib(const u8 *eeprom, size_t eeprom_size, 272 struct iwl_nvm_data *data) 273 { 274 struct iwl_eeprom_calib_hdr *hdr; 275 276 hdr = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, 277 EEPROM_CALIB_ALL); 278 if (!hdr) 279 return -ENODATA; 280 data->calib_version = hdr->version; 281 data->calib_voltage = hdr->voltage; 282 283 return 0; 284 } 285 286 /** 287 * enum iwl_eeprom_channel_flags - channel flags in EEPROM 288 * @EEPROM_CHANNEL_VALID: channel is usable for this SKU/geo 289 * @EEPROM_CHANNEL_IBSS: usable as an IBSS channel 290 * @EEPROM_CHANNEL_ACTIVE: active scanning allowed 291 * @EEPROM_CHANNEL_RADAR: radar detection required 292 * @EEPROM_CHANNEL_WIDE: 20 MHz channel okay (?) 293 * @EEPROM_CHANNEL_DFS: dynamic freq selection candidate 294 */ 295 enum iwl_eeprom_channel_flags { 296 EEPROM_CHANNEL_VALID = BIT(0), 297 EEPROM_CHANNEL_IBSS = BIT(1), 298 EEPROM_CHANNEL_ACTIVE = BIT(3), 299 EEPROM_CHANNEL_RADAR = BIT(4), 300 EEPROM_CHANNEL_WIDE = BIT(5), 301 EEPROM_CHANNEL_DFS = BIT(7), 302 }; 303 304 /** 305 * struct iwl_eeprom_channel - EEPROM channel data 306 * @flags: %EEPROM_CHANNEL_* flags 307 * @max_power_avg: max power (in dBm) on this channel, at most 31 dBm 308 */ 309 struct iwl_eeprom_channel { 310 u8 flags; 311 s8 max_power_avg; 312 } __packed; 313 314 315 enum iwl_eeprom_enhanced_txpwr_flags { 316 IWL_EEPROM_ENH_TXP_FL_VALID = BIT(0), 317 IWL_EEPROM_ENH_TXP_FL_BAND_52G = BIT(1), 318 IWL_EEPROM_ENH_TXP_FL_OFDM = BIT(2), 319 IWL_EEPROM_ENH_TXP_FL_40MHZ = BIT(3), 320 IWL_EEPROM_ENH_TXP_FL_HT_AP = BIT(4), 321 IWL_EEPROM_ENH_TXP_FL_RES1 = BIT(5), 322 IWL_EEPROM_ENH_TXP_FL_RES2 = BIT(6), 323 IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE = BIT(7), 324 }; 325 326 /** 327 * iwl_eeprom_enhanced_txpwr structure 328 * @flags: entry flags 329 * @channel: channel number 330 * @chain_a_max_pwr: chain a max power in 1/2 dBm 331 * @chain_b_max_pwr: chain b max power in 1/2 dBm 332 * @chain_c_max_pwr: chain c max power in 1/2 dBm 333 * @delta_20_in_40: 20-in-40 deltas (hi/lo) 334 * @mimo2_max_pwr: mimo2 max power in 1/2 dBm 335 * @mimo3_max_pwr: mimo3 max power in 1/2 dBm 336 * 337 * This structure presents the enhanced regulatory tx power limit layout 338 * in an EEPROM image. 339 */ 340 struct iwl_eeprom_enhanced_txpwr { 341 u8 flags; 342 u8 channel; 343 s8 chain_a_max; 344 s8 chain_b_max; 345 s8 chain_c_max; 346 u8 delta_20_in_40; 347 s8 mimo2_max; 348 s8 mimo3_max; 349 } __packed; 350 351 static s8 iwl_get_max_txpwr_half_dbm(const struct iwl_nvm_data *data, 352 struct iwl_eeprom_enhanced_txpwr *txp) 353 { 354 s8 result = 0; /* (.5 dBm) */ 355 356 /* Take the highest tx power from any valid chains */ 357 if (data->valid_tx_ant & ANT_A && txp->chain_a_max > result) 358 result = txp->chain_a_max; 359 360 if (data->valid_tx_ant & ANT_B && txp->chain_b_max > result) 361 result = txp->chain_b_max; 362 363 if (data->valid_tx_ant & ANT_C && txp->chain_c_max > result) 364 result = txp->chain_c_max; 365 366 if ((data->valid_tx_ant == ANT_AB || 367 data->valid_tx_ant == ANT_BC || 368 data->valid_tx_ant == ANT_AC) && txp->mimo2_max > result) 369 result = txp->mimo2_max; 370 371 if (data->valid_tx_ant == ANT_ABC && txp->mimo3_max > result) 372 result = txp->mimo3_max; 373 374 return result; 375 } 376 377 #define EEPROM_TXP_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT) 378 #define EEPROM_TXP_ENTRY_LEN sizeof(struct iwl_eeprom_enhanced_txpwr) 379 #define EEPROM_TXP_SZ_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT_SIZE) 380 381 #define TXP_CHECK_AND_PRINT(x) \ 382 ((txp->flags & IWL_EEPROM_ENH_TXP_FL_##x) ? # x " " : "") 383 384 static void 385 iwl_eeprom_enh_txp_read_element(struct iwl_nvm_data *data, 386 struct iwl_eeprom_enhanced_txpwr *txp, 387 int n_channels, s8 max_txpower_avg) 388 { 389 int ch_idx; 390 enum nl80211_band band; 391 392 band = txp->flags & IWL_EEPROM_ENH_TXP_FL_BAND_52G ? 393 NL80211_BAND_5GHZ : NL80211_BAND_2GHZ; 394 395 for (ch_idx = 0; ch_idx < n_channels; ch_idx++) { 396 struct ieee80211_channel *chan = &data->channels[ch_idx]; 397 398 /* update matching channel or from common data only */ 399 if (txp->channel != 0 && chan->hw_value != txp->channel) 400 continue; 401 402 /* update matching band only */ 403 if (band != chan->band) 404 continue; 405 406 if (chan->max_power < max_txpower_avg && 407 !(txp->flags & IWL_EEPROM_ENH_TXP_FL_40MHZ)) 408 chan->max_power = max_txpower_avg; 409 } 410 } 411 412 static void iwl_eeprom_enhanced_txpower(struct device *dev, 413 struct iwl_nvm_data *data, 414 const u8 *eeprom, size_t eeprom_size, 415 int n_channels) 416 { 417 struct iwl_eeprom_enhanced_txpwr *txp_array, *txp; 418 int idx, entries; 419 __le16 *txp_len; 420 s8 max_txp_avg_halfdbm; 421 422 BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8); 423 424 /* the length is in 16-bit words, but we want entries */ 425 txp_len = (__le16 *)iwl_eeprom_query_addr(eeprom, eeprom_size, 426 EEPROM_TXP_SZ_OFFS); 427 entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN; 428 429 txp_array = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, 430 EEPROM_TXP_OFFS); 431 432 for (idx = 0; idx < entries; idx++) { 433 txp = &txp_array[idx]; 434 /* skip invalid entries */ 435 if (!(txp->flags & IWL_EEPROM_ENH_TXP_FL_VALID)) 436 continue; 437 438 IWL_DEBUG_EEPROM(dev, "%s %d:\t %s%s%s%s%s%s%s%s (0x%02x)\n", 439 (txp->channel && (txp->flags & 440 IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE)) ? 441 "Common " : (txp->channel) ? 442 "Channel" : "Common", 443 (txp->channel), 444 TXP_CHECK_AND_PRINT(VALID), 445 TXP_CHECK_AND_PRINT(BAND_52G), 446 TXP_CHECK_AND_PRINT(OFDM), 447 TXP_CHECK_AND_PRINT(40MHZ), 448 TXP_CHECK_AND_PRINT(HT_AP), 449 TXP_CHECK_AND_PRINT(RES1), 450 TXP_CHECK_AND_PRINT(RES2), 451 TXP_CHECK_AND_PRINT(COMMON_TYPE), 452 txp->flags); 453 IWL_DEBUG_EEPROM(dev, 454 "\t\t chain_A: %d chain_B: %d chain_C: %d\n", 455 txp->chain_a_max, txp->chain_b_max, 456 txp->chain_c_max); 457 IWL_DEBUG_EEPROM(dev, 458 "\t\t MIMO2: %d MIMO3: %d High 20_on_40: 0x%02x Low 20_on_40: 0x%02x\n", 459 txp->mimo2_max, txp->mimo3_max, 460 ((txp->delta_20_in_40 & 0xf0) >> 4), 461 (txp->delta_20_in_40 & 0x0f)); 462 463 max_txp_avg_halfdbm = iwl_get_max_txpwr_half_dbm(data, txp); 464 465 iwl_eeprom_enh_txp_read_element(data, txp, n_channels, 466 DIV_ROUND_UP(max_txp_avg_halfdbm, 2)); 467 468 if (max_txp_avg_halfdbm > data->max_tx_pwr_half_dbm) 469 data->max_tx_pwr_half_dbm = max_txp_avg_halfdbm; 470 } 471 } 472 473 static void iwl_init_band_reference(const struct iwl_cfg *cfg, 474 const u8 *eeprom, size_t eeprom_size, 475 int eeprom_band, int *eeprom_ch_count, 476 const struct iwl_eeprom_channel **ch_info, 477 const u8 **eeprom_ch_array) 478 { 479 u32 offset = cfg->eeprom_params->regulatory_bands[eeprom_band - 1]; 480 481 offset |= INDIRECT_ADDRESS | INDIRECT_REGULATORY; 482 483 *ch_info = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, offset); 484 485 switch (eeprom_band) { 486 case 1: /* 2.4GHz band */ 487 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1); 488 *eeprom_ch_array = iwl_eeprom_band_1; 489 break; 490 case 2: /* 4.9GHz band */ 491 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2); 492 *eeprom_ch_array = iwl_eeprom_band_2; 493 break; 494 case 3: /* 5.2GHz band */ 495 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3); 496 *eeprom_ch_array = iwl_eeprom_band_3; 497 break; 498 case 4: /* 5.5GHz band */ 499 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4); 500 *eeprom_ch_array = iwl_eeprom_band_4; 501 break; 502 case 5: /* 5.7GHz band */ 503 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5); 504 *eeprom_ch_array = iwl_eeprom_band_5; 505 break; 506 case 6: /* 2.4GHz ht40 channels */ 507 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6); 508 *eeprom_ch_array = iwl_eeprom_band_6; 509 break; 510 case 7: /* 5 GHz ht40 channels */ 511 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7); 512 *eeprom_ch_array = iwl_eeprom_band_7; 513 break; 514 default: 515 *eeprom_ch_count = 0; 516 *eeprom_ch_array = NULL; 517 WARN_ON(1); 518 } 519 } 520 521 #define CHECK_AND_PRINT(x) \ 522 ((eeprom_ch->flags & EEPROM_CHANNEL_##x) ? # x " " : "") 523 524 static void iwl_mod_ht40_chan_info(struct device *dev, 525 struct iwl_nvm_data *data, int n_channels, 526 enum nl80211_band band, u16 channel, 527 const struct iwl_eeprom_channel *eeprom_ch, 528 u8 clear_ht40_extension_channel) 529 { 530 struct ieee80211_channel *chan = NULL; 531 int i; 532 533 for (i = 0; i < n_channels; i++) { 534 if (data->channels[i].band != band) 535 continue; 536 if (data->channels[i].hw_value != channel) 537 continue; 538 chan = &data->channels[i]; 539 break; 540 } 541 542 if (!chan) 543 return; 544 545 IWL_DEBUG_EEPROM(dev, 546 "HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n", 547 channel, 548 band == NL80211_BAND_5GHZ ? "5.2" : "2.4", 549 CHECK_AND_PRINT(IBSS), 550 CHECK_AND_PRINT(ACTIVE), 551 CHECK_AND_PRINT(RADAR), 552 CHECK_AND_PRINT(WIDE), 553 CHECK_AND_PRINT(DFS), 554 eeprom_ch->flags, 555 eeprom_ch->max_power_avg, 556 ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) && 557 !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" 558 : "not "); 559 560 if (eeprom_ch->flags & EEPROM_CHANNEL_VALID) 561 chan->flags &= ~clear_ht40_extension_channel; 562 } 563 564 #define CHECK_AND_PRINT_I(x) \ 565 ((eeprom_ch_info[ch_idx].flags & EEPROM_CHANNEL_##x) ? # x " " : "") 566 567 static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg, 568 struct iwl_nvm_data *data, 569 const u8 *eeprom, size_t eeprom_size) 570 { 571 int band, ch_idx; 572 const struct iwl_eeprom_channel *eeprom_ch_info; 573 const u8 *eeprom_ch_array; 574 int eeprom_ch_count; 575 int n_channels = 0; 576 577 /* 578 * Loop through the 5 EEPROM bands and add them to the parse list 579 */ 580 for (band = 1; band <= 5; band++) { 581 struct ieee80211_channel *channel; 582 583 iwl_init_band_reference(cfg, eeprom, eeprom_size, band, 584 &eeprom_ch_count, &eeprom_ch_info, 585 &eeprom_ch_array); 586 587 /* Loop through each band adding each of the channels */ 588 for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) { 589 const struct iwl_eeprom_channel *eeprom_ch; 590 591 eeprom_ch = &eeprom_ch_info[ch_idx]; 592 593 if (!(eeprom_ch->flags & EEPROM_CHANNEL_VALID)) { 594 IWL_DEBUG_EEPROM(dev, 595 "Ch. %d Flags %x [%sGHz] - No traffic\n", 596 eeprom_ch_array[ch_idx], 597 eeprom_ch_info[ch_idx].flags, 598 (band != 1) ? "5.2" : "2.4"); 599 continue; 600 } 601 602 channel = &data->channels[n_channels]; 603 n_channels++; 604 605 channel->hw_value = eeprom_ch_array[ch_idx]; 606 channel->band = (band == 1) ? NL80211_BAND_2GHZ 607 : NL80211_BAND_5GHZ; 608 channel->center_freq = 609 ieee80211_channel_to_frequency( 610 channel->hw_value, channel->band); 611 612 /* set no-HT40, will enable as appropriate later */ 613 channel->flags = IEEE80211_CHAN_NO_HT40; 614 615 if (!(eeprom_ch->flags & EEPROM_CHANNEL_IBSS)) 616 channel->flags |= IEEE80211_CHAN_NO_IR; 617 618 if (!(eeprom_ch->flags & EEPROM_CHANNEL_ACTIVE)) 619 channel->flags |= IEEE80211_CHAN_NO_IR; 620 621 if (eeprom_ch->flags & EEPROM_CHANNEL_RADAR) 622 channel->flags |= IEEE80211_CHAN_RADAR; 623 624 /* Initialize regulatory-based run-time data */ 625 channel->max_power = 626 eeprom_ch_info[ch_idx].max_power_avg; 627 IWL_DEBUG_EEPROM(dev, 628 "Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n", 629 channel->hw_value, 630 (band != 1) ? "5.2" : "2.4", 631 CHECK_AND_PRINT_I(VALID), 632 CHECK_AND_PRINT_I(IBSS), 633 CHECK_AND_PRINT_I(ACTIVE), 634 CHECK_AND_PRINT_I(RADAR), 635 CHECK_AND_PRINT_I(WIDE), 636 CHECK_AND_PRINT_I(DFS), 637 eeprom_ch_info[ch_idx].flags, 638 eeprom_ch_info[ch_idx].max_power_avg, 639 ((eeprom_ch_info[ch_idx].flags & 640 EEPROM_CHANNEL_IBSS) && 641 !(eeprom_ch_info[ch_idx].flags & 642 EEPROM_CHANNEL_RADAR)) 643 ? "" : "not "); 644 } 645 } 646 647 if (cfg->eeprom_params->enhanced_txpower) { 648 /* 649 * for newer device (6000 series and up) 650 * EEPROM contain enhanced tx power information 651 * driver need to process addition information 652 * to determine the max channel tx power limits 653 */ 654 iwl_eeprom_enhanced_txpower(dev, data, eeprom, eeprom_size, 655 n_channels); 656 } else { 657 /* All others use data from channel map */ 658 int i; 659 660 data->max_tx_pwr_half_dbm = -128; 661 662 for (i = 0; i < n_channels; i++) 663 data->max_tx_pwr_half_dbm = 664 max_t(s8, data->max_tx_pwr_half_dbm, 665 data->channels[i].max_power * 2); 666 } 667 668 /* Check if we do have HT40 channels */ 669 if (cfg->eeprom_params->regulatory_bands[5] == 670 EEPROM_REGULATORY_BAND_NO_HT40 && 671 cfg->eeprom_params->regulatory_bands[6] == 672 EEPROM_REGULATORY_BAND_NO_HT40) 673 return n_channels; 674 675 /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */ 676 for (band = 6; band <= 7; band++) { 677 enum nl80211_band ieeeband; 678 679 iwl_init_band_reference(cfg, eeprom, eeprom_size, band, 680 &eeprom_ch_count, &eeprom_ch_info, 681 &eeprom_ch_array); 682 683 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ 684 ieeeband = (band == 6) ? NL80211_BAND_2GHZ 685 : NL80211_BAND_5GHZ; 686 687 /* Loop through each band adding each of the channels */ 688 for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) { 689 /* Set up driver's info for lower half */ 690 iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband, 691 eeprom_ch_array[ch_idx], 692 &eeprom_ch_info[ch_idx], 693 IEEE80211_CHAN_NO_HT40PLUS); 694 695 /* Set up driver's info for upper half */ 696 iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband, 697 eeprom_ch_array[ch_idx] + 4, 698 &eeprom_ch_info[ch_idx], 699 IEEE80211_CHAN_NO_HT40MINUS); 700 } 701 } 702 703 return n_channels; 704 } 705 706 int iwl_init_sband_channels(struct iwl_nvm_data *data, 707 struct ieee80211_supported_band *sband, 708 int n_channels, enum nl80211_band band) 709 { 710 struct ieee80211_channel *chan = &data->channels[0]; 711 int n = 0, idx = 0; 712 713 while (idx < n_channels && chan->band != band) 714 chan = &data->channels[++idx]; 715 716 sband->channels = &data->channels[idx]; 717 718 while (idx < n_channels && chan->band == band) { 719 chan = &data->channels[++idx]; 720 n++; 721 } 722 723 sband->n_channels = n; 724 725 return n; 726 } 727 728 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ 729 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ 730 731 void iwl_init_ht_hw_capab(struct iwl_trans *trans, 732 struct iwl_nvm_data *data, 733 struct ieee80211_sta_ht_cap *ht_info, 734 enum nl80211_band band, 735 u8 tx_chains, u8 rx_chains) 736 { 737 const struct iwl_cfg *cfg = trans->cfg; 738 int max_bit_rate = 0; 739 740 tx_chains = hweight8(tx_chains); 741 if (cfg->rx_with_siso_diversity) 742 rx_chains = 1; 743 else 744 rx_chains = hweight8(rx_chains); 745 746 if (!(data->sku_cap_11n_enable) || 747 (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL) || 748 !cfg->ht_params) { 749 ht_info->ht_supported = false; 750 return; 751 } 752 753 if (data->sku_cap_mimo_disabled) 754 rx_chains = 1; 755 756 ht_info->ht_supported = true; 757 ht_info->cap = IEEE80211_HT_CAP_DSSSCCK40; 758 759 if (cfg->ht_params->stbc) { 760 ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); 761 762 if (tx_chains > 1) 763 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC; 764 } 765 766 if (cfg->ht_params->ldpc) 767 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING; 768 769 if ((trans->trans_cfg->mq_rx_supported && 770 iwlwifi_mod_params.amsdu_size == IWL_AMSDU_DEF) || 771 iwlwifi_mod_params.amsdu_size >= IWL_AMSDU_8K) 772 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; 773 774 ht_info->ampdu_factor = cfg->max_ht_ampdu_exponent; 775 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4; 776 777 ht_info->mcs.rx_mask[0] = 0xFF; 778 if (rx_chains >= 2) 779 ht_info->mcs.rx_mask[1] = 0xFF; 780 if (rx_chains >= 3) 781 ht_info->mcs.rx_mask[2] = 0xFF; 782 783 if (cfg->ht_params->ht_greenfield_support) 784 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD; 785 ht_info->cap |= IEEE80211_HT_CAP_SGI_20; 786 787 max_bit_rate = MAX_BIT_RATE_20_MHZ; 788 789 if (cfg->ht_params->ht40_bands & BIT(band)) { 790 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 791 ht_info->cap |= IEEE80211_HT_CAP_SGI_40; 792 max_bit_rate = MAX_BIT_RATE_40_MHZ; 793 } 794 795 /* Highest supported Rx data rate */ 796 max_bit_rate *= rx_chains; 797 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); 798 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); 799 800 /* Tx MCS capabilities */ 801 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 802 if (tx_chains != rx_chains) { 803 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 804 ht_info->mcs.tx_params |= ((tx_chains - 1) << 805 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); 806 } 807 } 808 809 static void iwl_init_sbands(struct iwl_trans *trans, const struct iwl_cfg *cfg, 810 struct iwl_nvm_data *data, 811 const u8 *eeprom, size_t eeprom_size) 812 { 813 struct device *dev = trans->dev; 814 int n_channels = iwl_init_channel_map(dev, cfg, data, 815 eeprom, eeprom_size); 816 int n_used = 0; 817 struct ieee80211_supported_band *sband; 818 819 sband = &data->bands[NL80211_BAND_2GHZ]; 820 sband->band = NL80211_BAND_2GHZ; 821 sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS]; 822 sband->n_bitrates = N_RATES_24; 823 n_used += iwl_init_sband_channels(data, sband, n_channels, 824 NL80211_BAND_2GHZ); 825 iwl_init_ht_hw_capab(trans, data, &sband->ht_cap, NL80211_BAND_2GHZ, 826 data->valid_tx_ant, data->valid_rx_ant); 827 828 sband = &data->bands[NL80211_BAND_5GHZ]; 829 sband->band = NL80211_BAND_5GHZ; 830 sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS]; 831 sband->n_bitrates = N_RATES_52; 832 n_used += iwl_init_sband_channels(data, sband, n_channels, 833 NL80211_BAND_5GHZ); 834 iwl_init_ht_hw_capab(trans, data, &sband->ht_cap, NL80211_BAND_5GHZ, 835 data->valid_tx_ant, data->valid_rx_ant); 836 837 if (n_channels != n_used) 838 IWL_ERR_DEV(dev, "EEPROM: used only %d of %d channels\n", 839 n_used, n_channels); 840 } 841 842 /* EEPROM data functions */ 843 844 struct iwl_nvm_data * 845 iwl_parse_eeprom_data(struct iwl_trans *trans, const struct iwl_cfg *cfg, 846 const u8 *eeprom, size_t eeprom_size) 847 { 848 struct iwl_nvm_data *data; 849 struct device *dev = trans->dev; 850 const void *tmp; 851 u16 radio_cfg, sku; 852 853 if (WARN_ON(!cfg || !cfg->eeprom_params)) 854 return NULL; 855 856 data = kzalloc(struct_size(data, channels, IWL_NUM_CHANNELS), 857 GFP_KERNEL); 858 if (!data) 859 return NULL; 860 861 /* get MAC address(es) */ 862 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_MAC_ADDRESS); 863 if (!tmp) 864 goto err_free; 865 memcpy(data->hw_addr, tmp, ETH_ALEN); 866 data->n_hw_addrs = iwl_eeprom_query16(eeprom, eeprom_size, 867 EEPROM_NUM_MAC_ADDRESS); 868 869 if (iwl_eeprom_read_calib(eeprom, eeprom_size, data)) 870 goto err_free; 871 872 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_XTAL); 873 if (!tmp) 874 goto err_free; 875 memcpy(data->xtal_calib, tmp, sizeof(data->xtal_calib)); 876 877 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, 878 EEPROM_RAW_TEMPERATURE); 879 if (!tmp) 880 goto err_free; 881 data->raw_temperature = *(__le16 *)tmp; 882 883 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, 884 EEPROM_KELVIN_TEMPERATURE); 885 if (!tmp) 886 goto err_free; 887 data->kelvin_temperature = *(__le16 *)tmp; 888 data->kelvin_voltage = *((__le16 *)tmp + 1); 889 890 radio_cfg = iwl_eeprom_query16(eeprom, eeprom_size, 891 EEPROM_RADIO_CONFIG); 892 data->radio_cfg_dash = EEPROM_RF_CFG_DASH_MSK(radio_cfg); 893 data->radio_cfg_pnum = EEPROM_RF_CFG_PNUM_MSK(radio_cfg); 894 data->radio_cfg_step = EEPROM_RF_CFG_STEP_MSK(radio_cfg); 895 data->radio_cfg_type = EEPROM_RF_CFG_TYPE_MSK(radio_cfg); 896 data->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg); 897 data->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg); 898 899 sku = iwl_eeprom_query16(eeprom, eeprom_size, 900 EEPROM_SKU_CAP); 901 data->sku_cap_11n_enable = sku & EEPROM_SKU_CAP_11N_ENABLE; 902 data->sku_cap_amt_enable = sku & EEPROM_SKU_CAP_AMT_ENABLE; 903 data->sku_cap_band_24ghz_enable = sku & EEPROM_SKU_CAP_BAND_24GHZ; 904 data->sku_cap_band_52ghz_enable = sku & EEPROM_SKU_CAP_BAND_52GHZ; 905 data->sku_cap_ipan_enable = sku & EEPROM_SKU_CAP_IPAN_ENABLE; 906 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL) 907 data->sku_cap_11n_enable = false; 908 909 data->nvm_version = iwl_eeprom_query16(eeprom, eeprom_size, 910 EEPROM_VERSION); 911 912 /* check overrides (some devices have wrong EEPROM) */ 913 if (cfg->valid_tx_ant) 914 data->valid_tx_ant = cfg->valid_tx_ant; 915 if (cfg->valid_rx_ant) 916 data->valid_rx_ant = cfg->valid_rx_ant; 917 918 if (!data->valid_tx_ant || !data->valid_rx_ant) { 919 IWL_ERR_DEV(dev, "invalid antennas (0x%x, 0x%x)\n", 920 data->valid_tx_ant, data->valid_rx_ant); 921 goto err_free; 922 } 923 924 iwl_init_sbands(trans, cfg, data, eeprom, eeprom_size); 925 926 return data; 927 err_free: 928 kfree(data); 929 return NULL; 930 } 931 IWL_EXPORT_SYMBOL(iwl_parse_eeprom_data); 932