Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/iwlwifi/iwl-eeprom-parse.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2005-2014, 2018-2020 Intel Corporation 4 * Copyright (C) 2015 Intel Mobile Communications GmbH 5 */ 6 #include <linux/types.h> 7 #include <linux/slab.h> 8 #include <linux/export.h> 9 #include "iwl-drv.h" 10 #include "iwl-modparams.h" 11 #include "iwl-eeprom-parse.h" 12 13 #if IS_ENABLED(CONFIG_IWLDVM) 14 /* EEPROM offset definitions */ 15 16 /* indirect access definitions */ 17 #define ADDRESS_MSK 0x0000FFFF 18 #define INDIRECT_TYPE_MSK 0x000F0000 19 #define INDIRECT_HOST 0x00010000 20 #define INDIRECT_GENERAL 0x00020000 21 #define INDIRECT_REGULATORY 0x00030000 22 #define INDIRECT_CALIBRATION 0x00040000 23 #define INDIRECT_PROCESS_ADJST 0x00050000 24 #define INDIRECT_OTHERS 0x00060000 25 #define INDIRECT_TXP_LIMIT 0x00070000 26 #define INDIRECT_TXP_LIMIT_SIZE 0x00080000 27 #define INDIRECT_ADDRESS 0x00100000 28 29 /* corresponding link offsets in EEPROM */ 30 #define EEPROM_LINK_HOST (2*0x64) 31 #define EEPROM_LINK_GENERAL (2*0x65) 32 #define EEPROM_LINK_REGULATORY (2*0x66) 33 #define EEPROM_LINK_CALIBRATION (2*0x67) 34 #define EEPROM_LINK_PROCESS_ADJST (2*0x68) 35 #define EEPROM_LINK_OTHERS (2*0x69) 36 #define EEPROM_LINK_TXP_LIMIT (2*0x6a) 37 #define EEPROM_LINK_TXP_LIMIT_SIZE (2*0x6b) 38 39 /* General */ 40 #define EEPROM_DEVICE_ID (2*0x08) /* 2 bytes */ 41 #define EEPROM_SUBSYSTEM_ID (2*0x0A) /* 2 bytes */ 42 #define EEPROM_MAC_ADDRESS (2*0x15) /* 6 bytes */ 43 #define EEPROM_BOARD_REVISION (2*0x35) /* 2 bytes */ 44 #define EEPROM_BOARD_PBA_NUMBER (2*0x3B+1) /* 9 bytes */ 45 #define EEPROM_VERSION (2*0x44) /* 2 bytes */ 46 #define EEPROM_SKU_CAP (2*0x45) /* 2 bytes */ 47 #define EEPROM_OEM_MODE (2*0x46) /* 2 bytes */ 48 #define EEPROM_RADIO_CONFIG (2*0x48) /* 2 bytes */ 49 #define EEPROM_NUM_MAC_ADDRESS (2*0x4C) /* 2 bytes */ 50 51 /* calibration */ 52 struct iwl_eeprom_calib_hdr { 53 u8 version; 54 u8 pa_type; 55 __le16 voltage; 56 } __packed; 57 58 #define EEPROM_CALIB_ALL (INDIRECT_ADDRESS | INDIRECT_CALIBRATION) 59 #define EEPROM_XTAL ((2*0x128) | EEPROM_CALIB_ALL) 60 61 /* temperature */ 62 #define EEPROM_KELVIN_TEMPERATURE ((2*0x12A) | EEPROM_CALIB_ALL) 63 #define EEPROM_RAW_TEMPERATURE ((2*0x12B) | EEPROM_CALIB_ALL) 64 65 /* SKU Capabilities (actual values from EEPROM definition) */ 66 enum eeprom_sku_bits { 67 EEPROM_SKU_CAP_BAND_24GHZ = BIT(4), 68 EEPROM_SKU_CAP_BAND_52GHZ = BIT(5), 69 EEPROM_SKU_CAP_11N_ENABLE = BIT(6), 70 EEPROM_SKU_CAP_AMT_ENABLE = BIT(7), 71 EEPROM_SKU_CAP_IPAN_ENABLE = BIT(8) 72 }; 73 74 /* radio config bits (actual values from EEPROM definition) */ 75 #define EEPROM_RF_CFG_TYPE_MSK(x) (x & 0x3) /* bits 0-1 */ 76 #define EEPROM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */ 77 #define EEPROM_RF_CFG_DASH_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */ 78 #define EEPROM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */ 79 #define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */ 80 #define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */ 81 82 83 /* 84 * EEPROM bands 85 * These are the channel numbers from each band in the order 86 * that they are stored in the EEPROM band information. Note 87 * that EEPROM bands aren't the same as mac80211 bands, and 88 * there are even special "ht40 bands" in the EEPROM. 89 */ 90 static const u8 iwl_eeprom_band_1[14] = { /* 2.4 GHz */ 91 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 92 }; 93 94 static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */ 95 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 96 }; 97 98 static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */ 99 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 100 }; 101 102 static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */ 103 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 104 }; 105 106 static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */ 107 145, 149, 153, 157, 161, 165 108 }; 109 110 static const u8 iwl_eeprom_band_6[] = { /* 2.4 ht40 channel */ 111 1, 2, 3, 4, 5, 6, 7 112 }; 113 114 static const u8 iwl_eeprom_band_7[] = { /* 5.2 ht40 channel */ 115 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 116 }; 117 118 #define IWL_NUM_CHANNELS (ARRAY_SIZE(iwl_eeprom_band_1) + \ 119 ARRAY_SIZE(iwl_eeprom_band_2) + \ 120 ARRAY_SIZE(iwl_eeprom_band_3) + \ 121 ARRAY_SIZE(iwl_eeprom_band_4) + \ 122 ARRAY_SIZE(iwl_eeprom_band_5)) 123 124 /* rate data (static) */ 125 static struct ieee80211_rate iwl_cfg80211_rates[] = { 126 { .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, }, 127 { .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1, 128 .flags = IEEE80211_RATE_SHORT_PREAMBLE, }, 129 { .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2, 130 .flags = IEEE80211_RATE_SHORT_PREAMBLE, }, 131 { .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3, 132 .flags = IEEE80211_RATE_SHORT_PREAMBLE, }, 133 { .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, }, 134 { .bitrate = 9 * 10, .hw_value = 5, .hw_value_short = 5, }, 135 { .bitrate = 12 * 10, .hw_value = 6, .hw_value_short = 6, }, 136 { .bitrate = 18 * 10, .hw_value = 7, .hw_value_short = 7, }, 137 { .bitrate = 24 * 10, .hw_value = 8, .hw_value_short = 8, }, 138 { .bitrate = 36 * 10, .hw_value = 9, .hw_value_short = 9, }, 139 { .bitrate = 48 * 10, .hw_value = 10, .hw_value_short = 10, }, 140 { .bitrate = 54 * 10, .hw_value = 11, .hw_value_short = 11, }, 141 }; 142 #define RATES_24_OFFS 0 143 #define N_RATES_24 ARRAY_SIZE(iwl_cfg80211_rates) 144 #define RATES_52_OFFS 4 145 #define N_RATES_52 (N_RATES_24 - RATES_52_OFFS) 146 147 /* EEPROM reading functions */ 148 149 static u16 iwl_eeprom_query16(const u8 *eeprom, size_t eeprom_size, int offset) 150 { 151 if (WARN_ON(offset + sizeof(u16) > eeprom_size)) 152 return 0; 153 return le16_to_cpup((__le16 *)(eeprom + offset)); 154 } 155 156 static u32 eeprom_indirect_address(const u8 *eeprom, size_t eeprom_size, 157 u32 address) 158 { 159 u16 offset = 0; 160 161 if ((address & INDIRECT_ADDRESS) == 0) 162 return address; 163 164 switch (address & INDIRECT_TYPE_MSK) { 165 case INDIRECT_HOST: 166 offset = iwl_eeprom_query16(eeprom, eeprom_size, 167 EEPROM_LINK_HOST); 168 break; 169 case INDIRECT_GENERAL: 170 offset = iwl_eeprom_query16(eeprom, eeprom_size, 171 EEPROM_LINK_GENERAL); 172 break; 173 case INDIRECT_REGULATORY: 174 offset = iwl_eeprom_query16(eeprom, eeprom_size, 175 EEPROM_LINK_REGULATORY); 176 break; 177 case INDIRECT_TXP_LIMIT: 178 offset = iwl_eeprom_query16(eeprom, eeprom_size, 179 EEPROM_LINK_TXP_LIMIT); 180 break; 181 case INDIRECT_TXP_LIMIT_SIZE: 182 offset = iwl_eeprom_query16(eeprom, eeprom_size, 183 EEPROM_LINK_TXP_LIMIT_SIZE); 184 break; 185 case INDIRECT_CALIBRATION: 186 offset = iwl_eeprom_query16(eeprom, eeprom_size, 187 EEPROM_LINK_CALIBRATION); 188 break; 189 case INDIRECT_PROCESS_ADJST: 190 offset = iwl_eeprom_query16(eeprom, eeprom_size, 191 EEPROM_LINK_PROCESS_ADJST); 192 break; 193 case INDIRECT_OTHERS: 194 offset = iwl_eeprom_query16(eeprom, eeprom_size, 195 EEPROM_LINK_OTHERS); 196 break; 197 default: 198 WARN_ON(1); 199 break; 200 } 201 202 /* translate the offset from words to byte */ 203 return (address & ADDRESS_MSK) + (offset << 1); 204 } 205 206 static const u8 *iwl_eeprom_query_addr(const u8 *eeprom, size_t eeprom_size, 207 u32 offset) 208 { 209 u32 address = eeprom_indirect_address(eeprom, eeprom_size, offset); 210 211 if (WARN_ON(address >= eeprom_size)) 212 return NULL; 213 214 return &eeprom[address]; 215 } 216 217 static int iwl_eeprom_read_calib(const u8 *eeprom, size_t eeprom_size, 218 struct iwl_nvm_data *data) 219 { 220 struct iwl_eeprom_calib_hdr *hdr; 221 222 hdr = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, 223 EEPROM_CALIB_ALL); 224 if (!hdr) 225 return -ENODATA; 226 data->calib_version = hdr->version; 227 data->calib_voltage = hdr->voltage; 228 229 return 0; 230 } 231 232 /** 233 * enum iwl_eeprom_channel_flags - channel flags in EEPROM 234 * @EEPROM_CHANNEL_VALID: channel is usable for this SKU/geo 235 * @EEPROM_CHANNEL_IBSS: usable as an IBSS channel 236 * @EEPROM_CHANNEL_ACTIVE: active scanning allowed 237 * @EEPROM_CHANNEL_RADAR: radar detection required 238 * @EEPROM_CHANNEL_WIDE: 20 MHz channel okay (?) 239 * @EEPROM_CHANNEL_DFS: dynamic freq selection candidate 240 */ 241 enum iwl_eeprom_channel_flags { 242 EEPROM_CHANNEL_VALID = BIT(0), 243 EEPROM_CHANNEL_IBSS = BIT(1), 244 EEPROM_CHANNEL_ACTIVE = BIT(3), 245 EEPROM_CHANNEL_RADAR = BIT(4), 246 EEPROM_CHANNEL_WIDE = BIT(5), 247 EEPROM_CHANNEL_DFS = BIT(7), 248 }; 249 250 /** 251 * struct iwl_eeprom_channel - EEPROM channel data 252 * @flags: %EEPROM_CHANNEL_* flags 253 * @max_power_avg: max power (in dBm) on this channel, at most 31 dBm 254 */ 255 struct iwl_eeprom_channel { 256 u8 flags; 257 s8 max_power_avg; 258 } __packed; 259 260 261 enum iwl_eeprom_enhanced_txpwr_flags { 262 IWL_EEPROM_ENH_TXP_FL_VALID = BIT(0), 263 IWL_EEPROM_ENH_TXP_FL_BAND_52G = BIT(1), 264 IWL_EEPROM_ENH_TXP_FL_OFDM = BIT(2), 265 IWL_EEPROM_ENH_TXP_FL_40MHZ = BIT(3), 266 IWL_EEPROM_ENH_TXP_FL_HT_AP = BIT(4), 267 IWL_EEPROM_ENH_TXP_FL_RES1 = BIT(5), 268 IWL_EEPROM_ENH_TXP_FL_RES2 = BIT(6), 269 IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE = BIT(7), 270 }; 271 272 /** 273 * struct iwl_eeprom_enhanced_txpwr 274 * @flags: entry flags 275 * @channel: channel number 276 * @chain_a_max: chain a max power in 1/2 dBm 277 * @chain_b_max: chain b max power in 1/2 dBm 278 * @chain_c_max: chain c max power in 1/2 dBm 279 * @delta_20_in_40: 20-in-40 deltas (hi/lo) 280 * @mimo2_max: mimo2 max power in 1/2 dBm 281 * @mimo3_max: mimo3 max power in 1/2 dBm 282 * 283 * This structure presents the enhanced regulatory tx power limit layout 284 * in an EEPROM image. 285 */ 286 struct iwl_eeprom_enhanced_txpwr { 287 u8 flags; 288 u8 channel; 289 s8 chain_a_max; 290 s8 chain_b_max; 291 s8 chain_c_max; 292 u8 delta_20_in_40; 293 s8 mimo2_max; 294 s8 mimo3_max; 295 } __packed; 296 297 static s8 iwl_get_max_txpwr_half_dbm(const struct iwl_nvm_data *data, 298 struct iwl_eeprom_enhanced_txpwr *txp) 299 { 300 s8 result = 0; /* (.5 dBm) */ 301 302 /* Take the highest tx power from any valid chains */ 303 if (data->valid_tx_ant & ANT_A && txp->chain_a_max > result) 304 result = txp->chain_a_max; 305 306 if (data->valid_tx_ant & ANT_B && txp->chain_b_max > result) 307 result = txp->chain_b_max; 308 309 if (data->valid_tx_ant & ANT_C && txp->chain_c_max > result) 310 result = txp->chain_c_max; 311 312 if ((data->valid_tx_ant == ANT_AB || 313 data->valid_tx_ant == ANT_BC || 314 data->valid_tx_ant == ANT_AC) && txp->mimo2_max > result) 315 result = txp->mimo2_max; 316 317 if (data->valid_tx_ant == ANT_ABC && txp->mimo3_max > result) 318 result = txp->mimo3_max; 319 320 return result; 321 } 322 323 #define EEPROM_TXP_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT) 324 #define EEPROM_TXP_ENTRY_LEN sizeof(struct iwl_eeprom_enhanced_txpwr) 325 #define EEPROM_TXP_SZ_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT_SIZE) 326 327 #define TXP_CHECK_AND_PRINT(x) \ 328 ((txp->flags & IWL_EEPROM_ENH_TXP_FL_##x) ? # x " " : "") 329 330 static void 331 iwl_eeprom_enh_txp_read_element(struct iwl_nvm_data *data, 332 struct iwl_eeprom_enhanced_txpwr *txp, 333 int n_channels, s8 max_txpower_avg) 334 { 335 int ch_idx; 336 enum nl80211_band band; 337 338 band = txp->flags & IWL_EEPROM_ENH_TXP_FL_BAND_52G ? 339 NL80211_BAND_5GHZ : NL80211_BAND_2GHZ; 340 341 for (ch_idx = 0; ch_idx < n_channels; ch_idx++) { 342 struct ieee80211_channel *chan = &data->channels[ch_idx]; 343 344 /* update matching channel or from common data only */ 345 if (txp->channel != 0 && chan->hw_value != txp->channel) 346 continue; 347 348 /* update matching band only */ 349 if (band != chan->band) 350 continue; 351 352 if (chan->max_power < max_txpower_avg && 353 !(txp->flags & IWL_EEPROM_ENH_TXP_FL_40MHZ)) 354 chan->max_power = max_txpower_avg; 355 } 356 } 357 358 static void iwl_eeprom_enhanced_txpower(struct device *dev, 359 struct iwl_nvm_data *data, 360 const u8 *eeprom, size_t eeprom_size, 361 int n_channels) 362 { 363 struct iwl_eeprom_enhanced_txpwr *txp_array, *txp; 364 int idx, entries; 365 __le16 *txp_len; 366 s8 max_txp_avg_halfdbm; 367 368 BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8); 369 370 /* the length is in 16-bit words, but we want entries */ 371 txp_len = (__le16 *)iwl_eeprom_query_addr(eeprom, eeprom_size, 372 EEPROM_TXP_SZ_OFFS); 373 entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN; 374 375 txp_array = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, 376 EEPROM_TXP_OFFS); 377 378 for (idx = 0; idx < entries; idx++) { 379 txp = &txp_array[idx]; 380 /* skip invalid entries */ 381 if (!(txp->flags & IWL_EEPROM_ENH_TXP_FL_VALID)) 382 continue; 383 384 IWL_DEBUG_EEPROM(dev, "%s %d:\t %s%s%s%s%s%s%s%s (0x%02x)\n", 385 (txp->channel && (txp->flags & 386 IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE)) ? 387 "Common " : (txp->channel) ? 388 "Channel" : "Common", 389 (txp->channel), 390 TXP_CHECK_AND_PRINT(VALID), 391 TXP_CHECK_AND_PRINT(BAND_52G), 392 TXP_CHECK_AND_PRINT(OFDM), 393 TXP_CHECK_AND_PRINT(40MHZ), 394 TXP_CHECK_AND_PRINT(HT_AP), 395 TXP_CHECK_AND_PRINT(RES1), 396 TXP_CHECK_AND_PRINT(RES2), 397 TXP_CHECK_AND_PRINT(COMMON_TYPE), 398 txp->flags); 399 IWL_DEBUG_EEPROM(dev, 400 "\t\t chain_A: %d chain_B: %d chain_C: %d\n", 401 txp->chain_a_max, txp->chain_b_max, 402 txp->chain_c_max); 403 IWL_DEBUG_EEPROM(dev, 404 "\t\t MIMO2: %d MIMO3: %d High 20_on_40: 0x%02x Low 20_on_40: 0x%02x\n", 405 txp->mimo2_max, txp->mimo3_max, 406 ((txp->delta_20_in_40 & 0xf0) >> 4), 407 (txp->delta_20_in_40 & 0x0f)); 408 409 max_txp_avg_halfdbm = iwl_get_max_txpwr_half_dbm(data, txp); 410 411 iwl_eeprom_enh_txp_read_element(data, txp, n_channels, 412 DIV_ROUND_UP(max_txp_avg_halfdbm, 2)); 413 414 if (max_txp_avg_halfdbm > data->max_tx_pwr_half_dbm) 415 data->max_tx_pwr_half_dbm = max_txp_avg_halfdbm; 416 } 417 } 418 419 static void iwl_init_band_reference(const struct iwl_cfg *cfg, 420 const u8 *eeprom, size_t eeprom_size, 421 int eeprom_band, int *eeprom_ch_count, 422 const struct iwl_eeprom_channel **ch_info, 423 const u8 **eeprom_ch_array) 424 { 425 u32 offset = cfg->eeprom_params->regulatory_bands[eeprom_band - 1]; 426 427 offset |= INDIRECT_ADDRESS | INDIRECT_REGULATORY; 428 429 *ch_info = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, offset); 430 431 switch (eeprom_band) { 432 case 1: /* 2.4GHz band */ 433 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1); 434 *eeprom_ch_array = iwl_eeprom_band_1; 435 break; 436 case 2: /* 4.9GHz band */ 437 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2); 438 *eeprom_ch_array = iwl_eeprom_band_2; 439 break; 440 case 3: /* 5.2GHz band */ 441 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3); 442 *eeprom_ch_array = iwl_eeprom_band_3; 443 break; 444 case 4: /* 5.5GHz band */ 445 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4); 446 *eeprom_ch_array = iwl_eeprom_band_4; 447 break; 448 case 5: /* 5.7GHz band */ 449 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5); 450 *eeprom_ch_array = iwl_eeprom_band_5; 451 break; 452 case 6: /* 2.4GHz ht40 channels */ 453 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6); 454 *eeprom_ch_array = iwl_eeprom_band_6; 455 break; 456 case 7: /* 5 GHz ht40 channels */ 457 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7); 458 *eeprom_ch_array = iwl_eeprom_band_7; 459 break; 460 default: 461 *eeprom_ch_count = 0; 462 *eeprom_ch_array = NULL; 463 WARN_ON(1); 464 } 465 } 466 467 #define CHECK_AND_PRINT(x) \ 468 ((eeprom_ch->flags & EEPROM_CHANNEL_##x) ? # x " " : "") 469 470 static void iwl_mod_ht40_chan_info(struct device *dev, 471 struct iwl_nvm_data *data, int n_channels, 472 enum nl80211_band band, u16 channel, 473 const struct iwl_eeprom_channel *eeprom_ch, 474 u8 clear_ht40_extension_channel) 475 { 476 struct ieee80211_channel *chan = NULL; 477 int i; 478 479 for (i = 0; i < n_channels; i++) { 480 if (data->channels[i].band != band) 481 continue; 482 if (data->channels[i].hw_value != channel) 483 continue; 484 chan = &data->channels[i]; 485 break; 486 } 487 488 if (!chan) 489 return; 490 491 IWL_DEBUG_EEPROM(dev, 492 "HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n", 493 channel, 494 band == NL80211_BAND_5GHZ ? "5.2" : "2.4", 495 CHECK_AND_PRINT(IBSS), 496 CHECK_AND_PRINT(ACTIVE), 497 CHECK_AND_PRINT(RADAR), 498 CHECK_AND_PRINT(WIDE), 499 CHECK_AND_PRINT(DFS), 500 eeprom_ch->flags, 501 eeprom_ch->max_power_avg, 502 ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) && 503 !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? "" 504 : "not "); 505 506 if (eeprom_ch->flags & EEPROM_CHANNEL_VALID) 507 chan->flags &= ~clear_ht40_extension_channel; 508 } 509 510 #define CHECK_AND_PRINT_I(x) \ 511 ((eeprom_ch_info[ch_idx].flags & EEPROM_CHANNEL_##x) ? # x " " : "") 512 513 static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg, 514 struct iwl_nvm_data *data, 515 const u8 *eeprom, size_t eeprom_size) 516 { 517 int band, ch_idx; 518 const struct iwl_eeprom_channel *eeprom_ch_info; 519 const u8 *eeprom_ch_array; 520 int eeprom_ch_count; 521 int n_channels = 0; 522 523 /* 524 * Loop through the 5 EEPROM bands and add them to the parse list 525 */ 526 for (band = 1; band <= 5; band++) { 527 struct ieee80211_channel *channel; 528 529 iwl_init_band_reference(cfg, eeprom, eeprom_size, band, 530 &eeprom_ch_count, &eeprom_ch_info, 531 &eeprom_ch_array); 532 533 /* Loop through each band adding each of the channels */ 534 for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) { 535 const struct iwl_eeprom_channel *eeprom_ch; 536 537 eeprom_ch = &eeprom_ch_info[ch_idx]; 538 539 if (!(eeprom_ch->flags & EEPROM_CHANNEL_VALID)) { 540 IWL_DEBUG_EEPROM(dev, 541 "Ch. %d Flags %x [%sGHz] - No traffic\n", 542 eeprom_ch_array[ch_idx], 543 eeprom_ch_info[ch_idx].flags, 544 (band != 1) ? "5.2" : "2.4"); 545 continue; 546 } 547 548 channel = &data->channels[n_channels]; 549 n_channels++; 550 551 channel->hw_value = eeprom_ch_array[ch_idx]; 552 channel->band = (band == 1) ? NL80211_BAND_2GHZ 553 : NL80211_BAND_5GHZ; 554 channel->center_freq = 555 ieee80211_channel_to_frequency( 556 channel->hw_value, channel->band); 557 558 /* set no-HT40, will enable as appropriate later */ 559 channel->flags = IEEE80211_CHAN_NO_HT40; 560 561 if (!(eeprom_ch->flags & EEPROM_CHANNEL_IBSS)) 562 channel->flags |= IEEE80211_CHAN_NO_IR; 563 564 if (!(eeprom_ch->flags & EEPROM_CHANNEL_ACTIVE)) 565 channel->flags |= IEEE80211_CHAN_NO_IR; 566 567 if (eeprom_ch->flags & EEPROM_CHANNEL_RADAR) 568 channel->flags |= IEEE80211_CHAN_RADAR; 569 570 /* Initialize regulatory-based run-time data */ 571 channel->max_power = 572 eeprom_ch_info[ch_idx].max_power_avg; 573 IWL_DEBUG_EEPROM(dev, 574 "Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n", 575 channel->hw_value, 576 (band != 1) ? "5.2" : "2.4", 577 CHECK_AND_PRINT_I(VALID), 578 CHECK_AND_PRINT_I(IBSS), 579 CHECK_AND_PRINT_I(ACTIVE), 580 CHECK_AND_PRINT_I(RADAR), 581 CHECK_AND_PRINT_I(WIDE), 582 CHECK_AND_PRINT_I(DFS), 583 eeprom_ch_info[ch_idx].flags, 584 eeprom_ch_info[ch_idx].max_power_avg, 585 ((eeprom_ch_info[ch_idx].flags & 586 EEPROM_CHANNEL_IBSS) && 587 !(eeprom_ch_info[ch_idx].flags & 588 EEPROM_CHANNEL_RADAR)) 589 ? "" : "not "); 590 } 591 } 592 593 if (cfg->eeprom_params->enhanced_txpower) { 594 /* 595 * for newer device (6000 series and up) 596 * EEPROM contain enhanced tx power information 597 * driver need to process addition information 598 * to determine the max channel tx power limits 599 */ 600 iwl_eeprom_enhanced_txpower(dev, data, eeprom, eeprom_size, 601 n_channels); 602 } else { 603 /* All others use data from channel map */ 604 int i; 605 606 data->max_tx_pwr_half_dbm = -128; 607 608 for (i = 0; i < n_channels; i++) 609 data->max_tx_pwr_half_dbm = 610 max_t(s8, data->max_tx_pwr_half_dbm, 611 data->channels[i].max_power * 2); 612 } 613 614 /* Check if we do have HT40 channels */ 615 if (cfg->eeprom_params->regulatory_bands[5] == 616 EEPROM_REGULATORY_BAND_NO_HT40 && 617 cfg->eeprom_params->regulatory_bands[6] == 618 EEPROM_REGULATORY_BAND_NO_HT40) 619 return n_channels; 620 621 /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */ 622 for (band = 6; band <= 7; band++) { 623 enum nl80211_band ieeeband; 624 625 iwl_init_band_reference(cfg, eeprom, eeprom_size, band, 626 &eeprom_ch_count, &eeprom_ch_info, 627 &eeprom_ch_array); 628 629 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ 630 ieeeband = (band == 6) ? NL80211_BAND_2GHZ 631 : NL80211_BAND_5GHZ; 632 633 /* Loop through each band adding each of the channels */ 634 for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) { 635 /* Set up driver's info for lower half */ 636 iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband, 637 eeprom_ch_array[ch_idx], 638 &eeprom_ch_info[ch_idx], 639 IEEE80211_CHAN_NO_HT40PLUS); 640 641 /* Set up driver's info for upper half */ 642 iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband, 643 eeprom_ch_array[ch_idx] + 4, 644 &eeprom_ch_info[ch_idx], 645 IEEE80211_CHAN_NO_HT40MINUS); 646 } 647 } 648 649 return n_channels; 650 } 651 #endif 652 653 int iwl_init_sband_channels(struct iwl_nvm_data *data, 654 struct ieee80211_supported_band *sband, 655 int n_channels, enum nl80211_band band) 656 { 657 struct ieee80211_channel *chan = &data->channels[0]; 658 int n = 0, idx = 0; 659 660 while (idx < n_channels && chan->band != band) 661 chan = &data->channels[++idx]; 662 663 sband->channels = &data->channels[idx]; 664 665 while (idx < n_channels && chan->band == band) { 666 chan = &data->channels[++idx]; 667 n++; 668 } 669 670 sband->n_channels = n; 671 672 return n; 673 } 674 675 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ 676 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ 677 678 void iwl_init_ht_hw_capab(struct iwl_trans *trans, 679 struct iwl_nvm_data *data, 680 struct ieee80211_sta_ht_cap *ht_info, 681 enum nl80211_band band, 682 u8 tx_chains, u8 rx_chains) 683 { 684 const struct iwl_cfg *cfg = trans->cfg; 685 int max_bit_rate = 0; 686 687 tx_chains = hweight8(tx_chains); 688 if (cfg->rx_with_siso_diversity) 689 rx_chains = 1; 690 else 691 rx_chains = hweight8(rx_chains); 692 693 if (!(data->sku_cap_11n_enable) || 694 (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL) || 695 !cfg->ht_params) { 696 ht_info->ht_supported = false; 697 return; 698 } 699 700 if (data->sku_cap_mimo_disabled) 701 rx_chains = 1; 702 703 ht_info->ht_supported = true; 704 ht_info->cap = IEEE80211_HT_CAP_DSSSCCK40; 705 706 if (cfg->ht_params->stbc) { 707 ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); 708 709 if (tx_chains > 1) 710 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC; 711 } 712 713 if (cfg->ht_params->ldpc) 714 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING; 715 716 if (trans->trans_cfg->mq_rx_supported || 717 iwlwifi_mod_params.amsdu_size >= IWL_AMSDU_8K) 718 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; 719 720 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; 721 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4; 722 723 ht_info->mcs.rx_mask[0] = 0xFF; 724 if (rx_chains >= 2) 725 ht_info->mcs.rx_mask[1] = 0xFF; 726 if (rx_chains >= 3) 727 ht_info->mcs.rx_mask[2] = 0xFF; 728 729 if (cfg->ht_params->ht_greenfield_support) 730 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD; 731 ht_info->cap |= IEEE80211_HT_CAP_SGI_20; 732 733 max_bit_rate = MAX_BIT_RATE_20_MHZ; 734 735 if (cfg->ht_params->ht40_bands & BIT(band)) { 736 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 737 ht_info->cap |= IEEE80211_HT_CAP_SGI_40; 738 max_bit_rate = MAX_BIT_RATE_40_MHZ; 739 } 740 741 /* Highest supported Rx data rate */ 742 max_bit_rate *= rx_chains; 743 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); 744 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); 745 746 /* Tx MCS capabilities */ 747 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 748 if (tx_chains != rx_chains) { 749 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 750 ht_info->mcs.tx_params |= ((tx_chains - 1) << 751 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); 752 } 753 } 754 755 #if IS_ENABLED(CONFIG_IWLDVM) 756 static void iwl_init_sbands(struct iwl_trans *trans, const struct iwl_cfg *cfg, 757 struct iwl_nvm_data *data, 758 const u8 *eeprom, size_t eeprom_size) 759 { 760 struct device *dev = trans->dev; 761 int n_channels = iwl_init_channel_map(dev, cfg, data, 762 eeprom, eeprom_size); 763 int n_used = 0; 764 struct ieee80211_supported_band *sband; 765 766 sband = &data->bands[NL80211_BAND_2GHZ]; 767 sband->band = NL80211_BAND_2GHZ; 768 sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS]; 769 sband->n_bitrates = N_RATES_24; 770 n_used += iwl_init_sband_channels(data, sband, n_channels, 771 NL80211_BAND_2GHZ); 772 iwl_init_ht_hw_capab(trans, data, &sband->ht_cap, NL80211_BAND_2GHZ, 773 data->valid_tx_ant, data->valid_rx_ant); 774 775 sband = &data->bands[NL80211_BAND_5GHZ]; 776 sband->band = NL80211_BAND_5GHZ; 777 sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS]; 778 sband->n_bitrates = N_RATES_52; 779 n_used += iwl_init_sband_channels(data, sband, n_channels, 780 NL80211_BAND_5GHZ); 781 iwl_init_ht_hw_capab(trans, data, &sband->ht_cap, NL80211_BAND_5GHZ, 782 data->valid_tx_ant, data->valid_rx_ant); 783 784 if (n_channels != n_used) 785 IWL_ERR_DEV(dev, "EEPROM: used only %d of %d channels\n", 786 n_used, n_channels); 787 } 788 789 /* EEPROM data functions */ 790 791 struct iwl_nvm_data * 792 iwl_parse_eeprom_data(struct iwl_trans *trans, const struct iwl_cfg *cfg, 793 const u8 *eeprom, size_t eeprom_size) 794 { 795 struct iwl_nvm_data *data; 796 struct device *dev = trans->dev; 797 const void *tmp; 798 u16 radio_cfg, sku; 799 800 if (WARN_ON(!cfg || !cfg->eeprom_params)) 801 return NULL; 802 803 data = kzalloc(struct_size(data, channels, IWL_NUM_CHANNELS), 804 GFP_KERNEL); 805 if (!data) 806 return NULL; 807 808 /* get MAC address(es) */ 809 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_MAC_ADDRESS); 810 if (!tmp) 811 goto err_free; 812 memcpy(data->hw_addr, tmp, ETH_ALEN); 813 data->n_hw_addrs = iwl_eeprom_query16(eeprom, eeprom_size, 814 EEPROM_NUM_MAC_ADDRESS); 815 816 if (iwl_eeprom_read_calib(eeprom, eeprom_size, data)) 817 goto err_free; 818 819 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_XTAL); 820 if (!tmp) 821 goto err_free; 822 memcpy(data->xtal_calib, tmp, sizeof(data->xtal_calib)); 823 824 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, 825 EEPROM_RAW_TEMPERATURE); 826 if (!tmp) 827 goto err_free; 828 data->raw_temperature = *(__le16 *)tmp; 829 830 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, 831 EEPROM_KELVIN_TEMPERATURE); 832 if (!tmp) 833 goto err_free; 834 data->kelvin_temperature = *(__le16 *)tmp; 835 data->kelvin_voltage = *((__le16 *)tmp + 1); 836 837 radio_cfg = iwl_eeprom_query16(eeprom, eeprom_size, 838 EEPROM_RADIO_CONFIG); 839 data->radio_cfg_dash = EEPROM_RF_CFG_DASH_MSK(radio_cfg); 840 data->radio_cfg_pnum = EEPROM_RF_CFG_PNUM_MSK(radio_cfg); 841 data->radio_cfg_step = EEPROM_RF_CFG_STEP_MSK(radio_cfg); 842 data->radio_cfg_type = EEPROM_RF_CFG_TYPE_MSK(radio_cfg); 843 data->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg); 844 data->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg); 845 846 sku = iwl_eeprom_query16(eeprom, eeprom_size, 847 EEPROM_SKU_CAP); 848 data->sku_cap_11n_enable = sku & EEPROM_SKU_CAP_11N_ENABLE; 849 data->sku_cap_amt_enable = sku & EEPROM_SKU_CAP_AMT_ENABLE; 850 data->sku_cap_band_24ghz_enable = sku & EEPROM_SKU_CAP_BAND_24GHZ; 851 data->sku_cap_band_52ghz_enable = sku & EEPROM_SKU_CAP_BAND_52GHZ; 852 data->sku_cap_ipan_enable = sku & EEPROM_SKU_CAP_IPAN_ENABLE; 853 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL) 854 data->sku_cap_11n_enable = false; 855 856 data->nvm_version = iwl_eeprom_query16(eeprom, eeprom_size, 857 EEPROM_VERSION); 858 859 /* check overrides (some devices have wrong EEPROM) */ 860 if (cfg->valid_tx_ant) 861 data->valid_tx_ant = cfg->valid_tx_ant; 862 if (cfg->valid_rx_ant) 863 data->valid_rx_ant = cfg->valid_rx_ant; 864 865 if (!data->valid_tx_ant || !data->valid_rx_ant) { 866 IWL_ERR_DEV(dev, "invalid antennas (0x%x, 0x%x)\n", 867 data->valid_tx_ant, data->valid_rx_ant); 868 goto err_free; 869 } 870 871 iwl_init_sbands(trans, cfg, data, eeprom, eeprom_size); 872 873 return data; 874 err_free: 875 kfree(data); 876 return NULL; 877 } 878 IWL_EXPORT_SYMBOL(iwl_parse_eeprom_data); 879 #endif
Cache object: 684efa20b3390e5a03df8dba6fbaf40a
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]