drivers/net/wireless/intel/iwlwifi/iwl-eeprom-parse.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2005-2014, 2018-2021, 2023 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 - enhanced regulatory TX power limits
 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         ht_info->mcs.rx_mask[1] = 0x00;
 725         ht_info->mcs.rx_mask[2] = 0x00;
 726
 727         if (rx_chains >= 2)
 728                 ht_info->mcs.rx_mask[1] = 0xFF;
 729         if (rx_chains >= 3)
 730                 ht_info->mcs.rx_mask[2] = 0xFF;
 731
 732         if (cfg->ht_params->ht_greenfield_support)
 733                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 734         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 735
 736         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 737
 738         if (cfg->ht_params->ht40_bands & BIT(band)) {
 739                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 740                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 741                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 742         }
 743
 744         /* Highest supported Rx data rate */
 745         max_bit_rate *= rx_chains;
 746         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 747         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 748
 749         /* Tx MCS capabilities */
 750         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 751         if (tx_chains != rx_chains) {
 752                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 753                 ht_info->mcs.tx_params |= ((tx_chains - 1) <<
 754                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 755         }
 756 }
 757
 758 #if IS_ENABLED(CONFIG_IWLDVM)
 759 static void iwl_init_sbands(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 760                             struct iwl_nvm_data *data,
 761                             const u8 *eeprom, size_t eeprom_size)
 762 {
 763         struct device *dev = trans->dev;
 764         int n_channels = iwl_init_channel_map(dev, cfg, data,
 765                                               eeprom, eeprom_size);
 766         int n_used = 0;
 767         struct ieee80211_supported_band *sband;
 768
 769         sband = &data->bands[NL80211_BAND_2GHZ];
 770         sband->band = NL80211_BAND_2GHZ;
 771         sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS];
 772         sband->n_bitrates = N_RATES_24;
 773         n_used += iwl_init_sband_channels(data, sband, n_channels,
 774                                           NL80211_BAND_2GHZ);
 775         iwl_init_ht_hw_capab(trans, data, &sband->ht_cap, NL80211_BAND_2GHZ,
 776                              data->valid_tx_ant, data->valid_rx_ant);
 777
 778         sband = &data->bands[NL80211_BAND_5GHZ];
 779         sband->band = NL80211_BAND_5GHZ;
 780         sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS];
 781         sband->n_bitrates = N_RATES_52;
 782         n_used += iwl_init_sband_channels(data, sband, n_channels,
 783                                           NL80211_BAND_5GHZ);
 784         iwl_init_ht_hw_capab(trans, data, &sband->ht_cap, NL80211_BAND_5GHZ,
 785                              data->valid_tx_ant, data->valid_rx_ant);
 786
 787         if (n_channels != n_used)
 788                 IWL_ERR_DEV(dev, "EEPROM: used only %d of %d channels\n",
 789                             n_used, n_channels);
 790 }
 791
 792 /* EEPROM data functions */
 793
 794 struct iwl_nvm_data *
 795 iwl_parse_eeprom_data(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 796                       const u8 *eeprom, size_t eeprom_size)
 797 {
 798         struct iwl_nvm_data *data;
 799         struct device *dev = trans->dev;
 800         const void *tmp;
 801         u16 radio_cfg, sku;
 802
 803         if (WARN_ON(!cfg || !cfg->eeprom_params))
 804                 return NULL;
 805
 806         data = kzalloc(struct_size(data, channels, IWL_NUM_CHANNELS),
 807                        GFP_KERNEL);
 808         if (!data)
 809                 return NULL;
 810
 811         /* get MAC address(es) */
 812         tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_MAC_ADDRESS);
 813         if (!tmp)
 814                 goto err_free;
 815         memcpy(data->hw_addr, tmp, ETH_ALEN);
 816         data->n_hw_addrs = iwl_eeprom_query16(eeprom, eeprom_size,
 817                                               EEPROM_NUM_MAC_ADDRESS);
 818
 819         if (iwl_eeprom_read_calib(eeprom, eeprom_size, data))
 820                 goto err_free;
 821
 822         tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_XTAL);
 823         if (!tmp)
 824                 goto err_free;
 825         memcpy(data->xtal_calib, tmp, sizeof(data->xtal_calib));
 826
 827         tmp = iwl_eeprom_query_addr(eeprom, eeprom_size,
 828                                     EEPROM_RAW_TEMPERATURE);
 829         if (!tmp)
 830                 goto err_free;
 831         data->raw_temperature = *(__le16 *)tmp;
 832
 833         tmp = iwl_eeprom_query_addr(eeprom, eeprom_size,
 834                                     EEPROM_KELVIN_TEMPERATURE);
 835         if (!tmp)
 836                 goto err_free;
 837         data->kelvin_temperature = *(__le16 *)tmp;
 838         data->kelvin_voltage = *((__le16 *)tmp + 1);
 839
 840         radio_cfg = iwl_eeprom_query16(eeprom, eeprom_size,
 841                                              EEPROM_RADIO_CONFIG);
 842         data->radio_cfg_dash = EEPROM_RF_CFG_DASH_MSK(radio_cfg);
 843         data->radio_cfg_pnum = EEPROM_RF_CFG_PNUM_MSK(radio_cfg);
 844         data->radio_cfg_step = EEPROM_RF_CFG_STEP_MSK(radio_cfg);
 845         data->radio_cfg_type = EEPROM_RF_CFG_TYPE_MSK(radio_cfg);
 846         data->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg);
 847         data->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg);
 848
 849         sku = iwl_eeprom_query16(eeprom, eeprom_size,
 850                                  EEPROM_SKU_CAP);
 851         data->sku_cap_11n_enable = sku & EEPROM_SKU_CAP_11N_ENABLE;
 852         data->sku_cap_amt_enable = sku & EEPROM_SKU_CAP_AMT_ENABLE;
 853         data->sku_cap_band_24ghz_enable = sku & EEPROM_SKU_CAP_BAND_24GHZ;
 854         data->sku_cap_band_52ghz_enable = sku & EEPROM_SKU_CAP_BAND_52GHZ;
 855         data->sku_cap_ipan_enable = sku & EEPROM_SKU_CAP_IPAN_ENABLE;
 856         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
 857                 data->sku_cap_11n_enable = false;
 858
 859         data->nvm_version = iwl_eeprom_query16(eeprom, eeprom_size,
 860                                                EEPROM_VERSION);
 861
 862         /* check overrides (some devices have wrong EEPROM) */
 863         if (cfg->valid_tx_ant)
 864                 data->valid_tx_ant = cfg->valid_tx_ant;
 865         if (cfg->valid_rx_ant)
 866                 data->valid_rx_ant = cfg->valid_rx_ant;
 867
 868         if (!data->valid_tx_ant || !data->valid_rx_ant) {
 869                 IWL_ERR_DEV(dev, "invalid antennas (0x%x, 0x%x)\n",
 870                             data->valid_tx_ant, data->valid_rx_ant);
 871                 goto err_free;
 872         }
 873
 874         iwl_init_sbands(trans, cfg, data, eeprom, eeprom_size);
 875
 876         return data;
 877  err_free:
 878         kfree(data);
 879         return NULL;
 880 }
 881 IWL_EXPORT_SYMBOL(iwl_parse_eeprom_data);
 882 #endif