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

   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  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *****************************************************************************/
  62 #include <linux/types.h>
  63 #include <linux/slab.h>
  64 #include <linux/export.h>
  65 #include "iwl-drv.h"
  66 #include "iwl-modparams.h"
  67 #include "iwl-eeprom-parse.h"
  68
  69 /* EEPROM offset definitions */
  70
  71 /* indirect access definitions */
  72 #define ADDRESS_MSK                 0x0000FFFF
  73 #define INDIRECT_TYPE_MSK           0x000F0000
  74 #define INDIRECT_HOST               0x00010000
  75 #define INDIRECT_GENERAL            0x00020000
  76 #define INDIRECT_REGULATORY         0x00030000
  77 #define INDIRECT_CALIBRATION        0x00040000
  78 #define INDIRECT_PROCESS_ADJST      0x00050000
  79 #define INDIRECT_OTHERS             0x00060000
  80 #define INDIRECT_TXP_LIMIT          0x00070000
  81 #define INDIRECT_TXP_LIMIT_SIZE     0x00080000
  82 #define INDIRECT_ADDRESS            0x00100000
  83
  84 /* corresponding link offsets in EEPROM */
  85 #define EEPROM_LINK_HOST             (2*0x64)
  86 #define EEPROM_LINK_GENERAL          (2*0x65)
  87 #define EEPROM_LINK_REGULATORY       (2*0x66)
  88 #define EEPROM_LINK_CALIBRATION      (2*0x67)
  89 #define EEPROM_LINK_PROCESS_ADJST    (2*0x68)
  90 #define EEPROM_LINK_OTHERS           (2*0x69)
  91 #define EEPROM_LINK_TXP_LIMIT        (2*0x6a)
  92 #define EEPROM_LINK_TXP_LIMIT_SIZE   (2*0x6b)
  93
  94 /* General */
  95 #define EEPROM_DEVICE_ID                    (2*0x08)    /* 2 bytes */
  96 #define EEPROM_SUBSYSTEM_ID                 (2*0x0A)    /* 2 bytes */
  97 #define EEPROM_MAC_ADDRESS                  (2*0x15)    /* 6  bytes */
  98 #define EEPROM_BOARD_REVISION               (2*0x35)    /* 2  bytes */
  99 #define EEPROM_BOARD_PBA_NUMBER             (2*0x3B+1)  /* 9  bytes */
 100 #define EEPROM_VERSION                      (2*0x44)    /* 2  bytes */
 101 #define EEPROM_SKU_CAP                      (2*0x45)    /* 2  bytes */
 102 #define EEPROM_OEM_MODE                     (2*0x46)    /* 2  bytes */
 103 #define EEPROM_RADIO_CONFIG                 (2*0x48)    /* 2  bytes */
 104 #define EEPROM_NUM_MAC_ADDRESS              (2*0x4C)    /* 2  bytes */
 105
 106 /* calibration */
 107 struct iwl_eeprom_calib_hdr {
 108         u8 version;
 109         u8 pa_type;
 110         __le16 voltage;
 111 } __packed;
 112
 113 #define EEPROM_CALIB_ALL        (INDIRECT_ADDRESS | INDIRECT_CALIBRATION)
 114 #define EEPROM_XTAL             ((2*0x128) | EEPROM_CALIB_ALL)
 115
 116 /* temperature */
 117 #define EEPROM_KELVIN_TEMPERATURE       ((2*0x12A) | EEPROM_CALIB_ALL)
 118 #define EEPROM_RAW_TEMPERATURE          ((2*0x12B) | EEPROM_CALIB_ALL)
 119
 120 /* SKU Capabilities (actual values from EEPROM definition) */
 121 enum eeprom_sku_bits {
 122         EEPROM_SKU_CAP_BAND_24GHZ       = BIT(4),
 123         EEPROM_SKU_CAP_BAND_52GHZ       = BIT(5),
 124         EEPROM_SKU_CAP_11N_ENABLE       = BIT(6),
 125         EEPROM_SKU_CAP_AMT_ENABLE       = BIT(7),
 126         EEPROM_SKU_CAP_IPAN_ENABLE      = BIT(8)
 127 };
 128
 129 /* radio config bits (actual values from EEPROM definition) */
 130 #define EEPROM_RF_CFG_TYPE_MSK(x)   (x & 0x3)         /* bits 0-1   */
 131 #define EEPROM_RF_CFG_STEP_MSK(x)   ((x >> 2)  & 0x3) /* bits 2-3   */
 132 #define EEPROM_RF_CFG_DASH_MSK(x)   ((x >> 4)  & 0x3) /* bits 4-5   */
 133 #define EEPROM_RF_CFG_PNUM_MSK(x)   ((x >> 6)  & 0x3) /* bits 6-7   */
 134 #define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8)  & 0xF) /* bits 8-11  */
 135 #define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */
 136
 137
 138 /*
 139  * EEPROM bands
 140  * These are the channel numbers from each band in the order
 141  * that they are stored in the EEPROM band information. Note
 142  * that EEPROM bands aren't the same as mac80211 bands, and
 143  * there are even special "ht40 bands" in the EEPROM.
 144  */
 145 static const u8 iwl_eeprom_band_1[14] = { /* 2.4 GHz */
 146         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
 147 };
 148
 149 static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */
 150         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
 151 };
 152
 153 static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */
 154         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
 155 };
 156
 157 static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
 158         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
 159 };
 160
 161 static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
 162         145, 149, 153, 157, 161, 165
 163 };
 164
 165 static const u8 iwl_eeprom_band_6[] = { /* 2.4 ht40 channel */
 166         1, 2, 3, 4, 5, 6, 7
 167 };
 168
 169 static const u8 iwl_eeprom_band_7[] = { /* 5.2 ht40 channel */
 170         36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
 171 };
 172
 173 #define IWL_NUM_CHANNELS        (ARRAY_SIZE(iwl_eeprom_band_1) + \
 174                                  ARRAY_SIZE(iwl_eeprom_band_2) + \
 175                                  ARRAY_SIZE(iwl_eeprom_band_3) + \
 176                                  ARRAY_SIZE(iwl_eeprom_band_4) + \
 177                                  ARRAY_SIZE(iwl_eeprom_band_5))
 178
 179 /* rate data (static) */
 180 static struct ieee80211_rate iwl_cfg80211_rates[] = {
 181         { .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, },
 182         { .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1,
 183           .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
 184         { .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2,
 185           .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
 186         { .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3,
 187           .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
 188         { .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, },
 189         { .bitrate = 9 * 10, .hw_value = 5, .hw_value_short = 5, },
 190         { .bitrate = 12 * 10, .hw_value = 6, .hw_value_short = 6, },
 191         { .bitrate = 18 * 10, .hw_value = 7, .hw_value_short = 7, },
 192         { .bitrate = 24 * 10, .hw_value = 8, .hw_value_short = 8, },
 193         { .bitrate = 36 * 10, .hw_value = 9, .hw_value_short = 9, },
 194         { .bitrate = 48 * 10, .hw_value = 10, .hw_value_short = 10, },
 195         { .bitrate = 54 * 10, .hw_value = 11, .hw_value_short = 11, },
 196 };
 197 #define RATES_24_OFFS   0
 198 #define N_RATES_24      ARRAY_SIZE(iwl_cfg80211_rates)
 199 #define RATES_52_OFFS   4
 200 #define N_RATES_52      (N_RATES_24 - RATES_52_OFFS)
 201
 202 /* EEPROM reading functions */
 203
 204 static u16 iwl_eeprom_query16(const u8 *eeprom, size_t eeprom_size, int offset)
 205 {
 206         if (WARN_ON(offset + sizeof(u16) > eeprom_size))
 207                 return 0;
 208         return le16_to_cpup((__le16 *)(eeprom + offset));
 209 }
 210
 211 static u32 eeprom_indirect_address(const u8 *eeprom, size_t eeprom_size,
 212                                    u32 address)
 213 {
 214         u16 offset = 0;
 215
 216         if ((address & INDIRECT_ADDRESS) == 0)
 217                 return address;
 218
 219         switch (address & INDIRECT_TYPE_MSK) {
 220         case INDIRECT_HOST:
 221                 offset = iwl_eeprom_query16(eeprom, eeprom_size,
 222                                             EEPROM_LINK_HOST);
 223                 break;
 224         case INDIRECT_GENERAL:
 225                 offset = iwl_eeprom_query16(eeprom, eeprom_size,
 226                                             EEPROM_LINK_GENERAL);
 227                 break;
 228         case INDIRECT_REGULATORY:
 229                 offset = iwl_eeprom_query16(eeprom, eeprom_size,
 230                                             EEPROM_LINK_REGULATORY);
 231                 break;
 232         case INDIRECT_TXP_LIMIT:
 233                 offset = iwl_eeprom_query16(eeprom, eeprom_size,
 234                                             EEPROM_LINK_TXP_LIMIT);
 235                 break;
 236         case INDIRECT_TXP_LIMIT_SIZE:
 237                 offset = iwl_eeprom_query16(eeprom, eeprom_size,
 238                                             EEPROM_LINK_TXP_LIMIT_SIZE);
 239                 break;
 240         case INDIRECT_CALIBRATION:
 241                 offset = iwl_eeprom_query16(eeprom, eeprom_size,
 242                                             EEPROM_LINK_CALIBRATION);
 243                 break;
 244         case INDIRECT_PROCESS_ADJST:
 245                 offset = iwl_eeprom_query16(eeprom, eeprom_size,
 246                                             EEPROM_LINK_PROCESS_ADJST);
 247                 break;
 248         case INDIRECT_OTHERS:
 249                 offset = iwl_eeprom_query16(eeprom, eeprom_size,
 250                                             EEPROM_LINK_OTHERS);
 251                 break;
 252         default:
 253                 WARN_ON(1);
 254                 break;
 255         }
 256
 257         /* translate the offset from words to byte */
 258         return (address & ADDRESS_MSK) + (offset << 1);
 259 }
 260
 261 static const u8 *iwl_eeprom_query_addr(const u8 *eeprom, size_t eeprom_size,
 262                                        u32 offset)
 263 {
 264         u32 address = eeprom_indirect_address(eeprom, eeprom_size, offset);
 265
 266         if (WARN_ON(address >= eeprom_size))
 267                 return NULL;
 268
 269         return &eeprom[address];
 270 }
 271
 272 static int iwl_eeprom_read_calib(const u8 *eeprom, size_t eeprom_size,
 273                                  struct iwl_nvm_data *data)
 274 {
 275         struct iwl_eeprom_calib_hdr *hdr;
 276
 277         hdr = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size,
 278                                             EEPROM_CALIB_ALL);
 279         if (!hdr)
 280                 return -ENODATA;
 281         data->calib_version = hdr->version;
 282         data->calib_voltage = hdr->voltage;
 283
 284         return 0;
 285 }
 286
 287 /**
 288  * enum iwl_eeprom_channel_flags - channel flags in EEPROM
 289  * @EEPROM_CHANNEL_VALID: channel is usable for this SKU/geo
 290  * @EEPROM_CHANNEL_IBSS: usable as an IBSS channel
 291  * @EEPROM_CHANNEL_ACTIVE: active scanning allowed
 292  * @EEPROM_CHANNEL_RADAR: radar detection required
 293  * @EEPROM_CHANNEL_WIDE: 20 MHz channel okay (?)
 294  * @EEPROM_CHANNEL_DFS: dynamic freq selection candidate
 295  */
 296 enum iwl_eeprom_channel_flags {
 297         EEPROM_CHANNEL_VALID = BIT(0),
 298         EEPROM_CHANNEL_IBSS = BIT(1),
 299         EEPROM_CHANNEL_ACTIVE = BIT(3),
 300         EEPROM_CHANNEL_RADAR = BIT(4),
 301         EEPROM_CHANNEL_WIDE = BIT(5),
 302         EEPROM_CHANNEL_DFS = BIT(7),
 303 };
 304
 305 /**
 306  * struct iwl_eeprom_channel - EEPROM channel data
 307  * @flags: %EEPROM_CHANNEL_* flags
 308  * @max_power_avg: max power (in dBm) on this channel, at most 31 dBm
 309  */
 310 struct iwl_eeprom_channel {
 311         u8 flags;
 312         s8 max_power_avg;
 313 } __packed;
 314
 315
 316 enum iwl_eeprom_enhanced_txpwr_flags {
 317         IWL_EEPROM_ENH_TXP_FL_VALID = BIT(0),
 318         IWL_EEPROM_ENH_TXP_FL_BAND_52G = BIT(1),
 319         IWL_EEPROM_ENH_TXP_FL_OFDM = BIT(2),
 320         IWL_EEPROM_ENH_TXP_FL_40MHZ = BIT(3),
 321         IWL_EEPROM_ENH_TXP_FL_HT_AP = BIT(4),
 322         IWL_EEPROM_ENH_TXP_FL_RES1 = BIT(5),
 323         IWL_EEPROM_ENH_TXP_FL_RES2 = BIT(6),
 324         IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE = BIT(7),
 325 };
 326
 327 /**
 328  * iwl_eeprom_enhanced_txpwr structure
 329  * @flags: entry flags
 330  * @channel: channel number
 331  * @chain_a_max_pwr: chain a max power in 1/2 dBm
 332  * @chain_b_max_pwr: chain b max power in 1/2 dBm
 333  * @chain_c_max_pwr: chain c max power in 1/2 dBm
 334  * @delta_20_in_40: 20-in-40 deltas (hi/lo)
 335  * @mimo2_max_pwr: mimo2 max power in 1/2 dBm
 336  * @mimo3_max_pwr: mimo3 max power in 1/2 dBm
 337  *
 338  * This structure presents the enhanced regulatory tx power limit layout
 339  * in an EEPROM image.
 340  */
 341 struct iwl_eeprom_enhanced_txpwr {
 342         u8 flags;
 343         u8 channel;
 344         s8 chain_a_max;
 345         s8 chain_b_max;
 346         s8 chain_c_max;
 347         u8 delta_20_in_40;
 348         s8 mimo2_max;
 349         s8 mimo3_max;
 350 } __packed;
 351
 352 static s8 iwl_get_max_txpwr_half_dbm(const struct iwl_nvm_data *data,
 353                                      struct iwl_eeprom_enhanced_txpwr *txp)
 354 {
 355         s8 result = 0; /* (.5 dBm) */
 356
 357         /* Take the highest tx power from any valid chains */
 358         if (data->valid_tx_ant & ANT_A && txp->chain_a_max > result)
 359                 result = txp->chain_a_max;
 360
 361         if (data->valid_tx_ant & ANT_B && txp->chain_b_max > result)
 362                 result = txp->chain_b_max;
 363
 364         if (data->valid_tx_ant & ANT_C && txp->chain_c_max > result)
 365                 result = txp->chain_c_max;
 366
 367         if ((data->valid_tx_ant == ANT_AB ||
 368              data->valid_tx_ant == ANT_BC ||
 369              data->valid_tx_ant == ANT_AC) && txp->mimo2_max > result)
 370                 result = txp->mimo2_max;
 371
 372         if (data->valid_tx_ant == ANT_ABC && txp->mimo3_max > result)
 373                 result = txp->mimo3_max;
 374
 375         return result;
 376 }
 377
 378 #define EEPROM_TXP_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT)
 379 #define EEPROM_TXP_ENTRY_LEN sizeof(struct iwl_eeprom_enhanced_txpwr)
 380 #define EEPROM_TXP_SZ_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT_SIZE)
 381
 382 #define TXP_CHECK_AND_PRINT(x) \
 383         ((txp->flags & IWL_EEPROM_ENH_TXP_FL_##x) ? # x " " : "")
 384
 385 static void
 386 iwl_eeprom_enh_txp_read_element(struct iwl_nvm_data *data,
 387                                 struct iwl_eeprom_enhanced_txpwr *txp,
 388                                 int n_channels, s8 max_txpower_avg)
 389 {
 390         int ch_idx;
 391         enum ieee80211_band band;
 392
 393         band = txp->flags & IWL_EEPROM_ENH_TXP_FL_BAND_52G ?
 394                 IEEE80211_BAND_5GHZ : IEEE80211_BAND_2GHZ;
 395
 396         for (ch_idx = 0; ch_idx < n_channels; ch_idx++) {
 397                 struct ieee80211_channel *chan = &data->channels[ch_idx];
 398
 399                 /* update matching channel or from common data only */
 400                 if (txp->channel != 0 && chan->hw_value != txp->channel)
 401                         continue;
 402
 403                 /* update matching band only */
 404                 if (band != chan->band)
 405                         continue;
 406
 407                 if (chan->max_power < max_txpower_avg &&
 408                     !(txp->flags & IWL_EEPROM_ENH_TXP_FL_40MHZ))
 409                         chan->max_power = max_txpower_avg;
 410         }
 411 }
 412
 413 static void iwl_eeprom_enhanced_txpower(struct device *dev,
 414                                         struct iwl_nvm_data *data,
 415                                         const u8 *eeprom, size_t eeprom_size,
 416                                         int n_channels)
 417 {
 418         struct iwl_eeprom_enhanced_txpwr *txp_array, *txp;
 419         int idx, entries;
 420         __le16 *txp_len;
 421         s8 max_txp_avg_halfdbm;
 422
 423         BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8);
 424
 425         /* the length is in 16-bit words, but we want entries */
 426         txp_len = (__le16 *)iwl_eeprom_query_addr(eeprom, eeprom_size,
 427                                                   EEPROM_TXP_SZ_OFFS);
 428         entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN;
 429
 430         txp_array = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size,
 431                                                   EEPROM_TXP_OFFS);
 432
 433         for (idx = 0; idx < entries; idx++) {
 434                 txp = &txp_array[idx];
 435                 /* skip invalid entries */
 436                 if (!(txp->flags & IWL_EEPROM_ENH_TXP_FL_VALID))
 437                         continue;
 438
 439                 IWL_DEBUG_EEPROM(dev, "%s %d:\t %s%s%s%s%s%s%s%s (0x%02x)\n",
 440                                  (txp->channel && (txp->flags &
 441                                         IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE)) ?
 442                                         "Common " : (txp->channel) ?
 443                                         "Channel" : "Common",
 444                                  (txp->channel),
 445                                  TXP_CHECK_AND_PRINT(VALID),
 446                                  TXP_CHECK_AND_PRINT(BAND_52G),
 447                                  TXP_CHECK_AND_PRINT(OFDM),
 448                                  TXP_CHECK_AND_PRINT(40MHZ),
 449                                  TXP_CHECK_AND_PRINT(HT_AP),
 450                                  TXP_CHECK_AND_PRINT(RES1),
 451                                  TXP_CHECK_AND_PRINT(RES2),
 452                                  TXP_CHECK_AND_PRINT(COMMON_TYPE),
 453                                  txp->flags);
 454                 IWL_DEBUG_EEPROM(dev,
 455                                  "\t\t chain_A: 0x%02x chain_B: 0X%02x chain_C: 0X%02x\n",
 456                                  txp->chain_a_max, txp->chain_b_max,
 457                                  txp->chain_c_max);
 458                 IWL_DEBUG_EEPROM(dev,
 459                                  "\t\t MIMO2: 0x%02x MIMO3: 0x%02x High 20_on_40: 0x%02x Low 20_on_40: 0x%02x\n",
 460                                  txp->mimo2_max, txp->mimo3_max,
 461                                  ((txp->delta_20_in_40 & 0xf0) >> 4),
 462                                  (txp->delta_20_in_40 & 0x0f));
 463
 464                 max_txp_avg_halfdbm = iwl_get_max_txpwr_half_dbm(data, txp);
 465
 466                 iwl_eeprom_enh_txp_read_element(data, txp, n_channels,
 467                                 DIV_ROUND_UP(max_txp_avg_halfdbm, 2));
 468
 469                 if (max_txp_avg_halfdbm > data->max_tx_pwr_half_dbm)
 470                         data->max_tx_pwr_half_dbm = max_txp_avg_halfdbm;
 471         }
 472 }
 473
 474 static void iwl_init_band_reference(const struct iwl_cfg *cfg,
 475                                     const u8 *eeprom, size_t eeprom_size,
 476                                     int eeprom_band, int *eeprom_ch_count,
 477                                     const struct iwl_eeprom_channel **ch_info,
 478                                     const u8 **eeprom_ch_array)
 479 {
 480         u32 offset = cfg->eeprom_params->regulatory_bands[eeprom_band - 1];
 481
 482         offset |= INDIRECT_ADDRESS | INDIRECT_REGULATORY;
 483
 484         *ch_info = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, offset);
 485
 486         switch (eeprom_band) {
 487         case 1:         /* 2.4GHz band */
 488                 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
 489                 *eeprom_ch_array = iwl_eeprom_band_1;
 490                 break;
 491         case 2:         /* 4.9GHz band */
 492                 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
 493                 *eeprom_ch_array = iwl_eeprom_band_2;
 494                 break;
 495         case 3:         /* 5.2GHz band */
 496                 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
 497                 *eeprom_ch_array = iwl_eeprom_band_3;
 498                 break;
 499         case 4:         /* 5.5GHz band */
 500                 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
 501                 *eeprom_ch_array = iwl_eeprom_band_4;
 502                 break;
 503         case 5:         /* 5.7GHz band */
 504                 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
 505                 *eeprom_ch_array = iwl_eeprom_band_5;
 506                 break;
 507         case 6:         /* 2.4GHz ht40 channels */
 508                 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
 509                 *eeprom_ch_array = iwl_eeprom_band_6;
 510                 break;
 511         case 7:         /* 5 GHz ht40 channels */
 512                 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
 513                 *eeprom_ch_array = iwl_eeprom_band_7;
 514                 break;
 515         default:
 516                 *eeprom_ch_count = 0;
 517                 *eeprom_ch_array = NULL;
 518                 WARN_ON(1);
 519         }
 520 }
 521
 522 #define CHECK_AND_PRINT(x) \
 523         ((eeprom_ch->flags & EEPROM_CHANNEL_##x) ? # x " " : "")
 524
 525 static void iwl_mod_ht40_chan_info(struct device *dev,
 526                                    struct iwl_nvm_data *data, int n_channels,
 527                                    enum ieee80211_band band, u16 channel,
 528                                    const struct iwl_eeprom_channel *eeprom_ch,
 529                                    u8 clear_ht40_extension_channel)
 530 {
 531         struct ieee80211_channel *chan = NULL;
 532         int i;
 533
 534         for (i = 0; i < n_channels; i++) {
 535                 if (data->channels[i].band != band)
 536                         continue;
 537                 if (data->channels[i].hw_value != channel)
 538                         continue;
 539                 chan = &data->channels[i];
 540                 break;
 541         }
 542
 543         if (!chan)
 544                 return;
 545
 546         IWL_DEBUG_EEPROM(dev,
 547                          "HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n",
 548                          channel,
 549                          band == IEEE80211_BAND_5GHZ ? "5.2" : "2.4",
 550                          CHECK_AND_PRINT(IBSS),
 551                          CHECK_AND_PRINT(ACTIVE),
 552                          CHECK_AND_PRINT(RADAR),
 553                          CHECK_AND_PRINT(WIDE),
 554                          CHECK_AND_PRINT(DFS),
 555                          eeprom_ch->flags,
 556                          eeprom_ch->max_power_avg,
 557                          ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) &&
 558                           !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? ""
 559                                                                       : "not ");
 560
 561         if (eeprom_ch->flags & EEPROM_CHANNEL_VALID)
 562                 chan->flags &= ~clear_ht40_extension_channel;
 563 }
 564
 565 #define CHECK_AND_PRINT_I(x)    \
 566         ((eeprom_ch_info[ch_idx].flags & EEPROM_CHANNEL_##x) ? # x " " : "")
 567
 568 static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
 569                                 struct iwl_nvm_data *data,
 570                                 const u8 *eeprom, size_t eeprom_size)
 571 {
 572         int band, ch_idx;
 573         const struct iwl_eeprom_channel *eeprom_ch_info;
 574         const u8 *eeprom_ch_array;
 575         int eeprom_ch_count;
 576         int n_channels = 0;
 577
 578         /*
 579          * Loop through the 5 EEPROM bands and add them to the parse list
 580          */
 581         for (band = 1; band <= 5; band++) {
 582                 struct ieee80211_channel *channel;
 583
 584                 iwl_init_band_reference(cfg, eeprom, eeprom_size, band,
 585                                         &eeprom_ch_count, &eeprom_ch_info,
 586                                         &eeprom_ch_array);
 587
 588                 /* Loop through each band adding each of the channels */
 589                 for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) {
 590                         const struct iwl_eeprom_channel *eeprom_ch;
 591
 592                         eeprom_ch = &eeprom_ch_info[ch_idx];
 593
 594                         if (!(eeprom_ch->flags & EEPROM_CHANNEL_VALID)) {
 595                                 IWL_DEBUG_EEPROM(dev,
 596                                                  "Ch. %d Flags %x [%sGHz] - No traffic\n",
 597                                                  eeprom_ch_array[ch_idx],
 598                                                  eeprom_ch_info[ch_idx].flags,
 599                                                  (band != 1) ? "5.2" : "2.4");
 600                                 continue;
 601                         }
 602
 603                         channel = &data->channels[n_channels];
 604                         n_channels++;
 605
 606                         channel->hw_value = eeprom_ch_array[ch_idx];
 607                         channel->band = (band == 1) ? IEEE80211_BAND_2GHZ
 608                                                     : IEEE80211_BAND_5GHZ;
 609                         channel->center_freq =
 610                                 ieee80211_channel_to_frequency(
 611                                         channel->hw_value, channel->band);
 612
 613                         /* set no-HT40, will enable as appropriate later */
 614                         channel->flags = IEEE80211_CHAN_NO_HT40;
 615
 616                         if (!(eeprom_ch->flags & EEPROM_CHANNEL_IBSS))
 617                                 channel->flags |= IEEE80211_CHAN_NO_IR;
 618
 619                         if (!(eeprom_ch->flags & EEPROM_CHANNEL_ACTIVE))
 620                                 channel->flags |= IEEE80211_CHAN_NO_IR;
 621
 622                         if (eeprom_ch->flags & EEPROM_CHANNEL_RADAR)
 623                                 channel->flags |= IEEE80211_CHAN_RADAR;
 624
 625                         /* Initialize regulatory-based run-time data */
 626                         channel->max_power =
 627                                 eeprom_ch_info[ch_idx].max_power_avg;
 628                         IWL_DEBUG_EEPROM(dev,
 629                                          "Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n",
 630                                          channel->hw_value,
 631                                          (band != 1) ? "5.2" : "2.4",
 632                                          CHECK_AND_PRINT_I(VALID),
 633                                          CHECK_AND_PRINT_I(IBSS),
 634                                          CHECK_AND_PRINT_I(ACTIVE),
 635                                          CHECK_AND_PRINT_I(RADAR),
 636                                          CHECK_AND_PRINT_I(WIDE),
 637                                          CHECK_AND_PRINT_I(DFS),
 638                                          eeprom_ch_info[ch_idx].flags,
 639                                          eeprom_ch_info[ch_idx].max_power_avg,
 640                                          ((eeprom_ch_info[ch_idx].flags &
 641                                                         EEPROM_CHANNEL_IBSS) &&
 642                                           !(eeprom_ch_info[ch_idx].flags &
 643                                                         EEPROM_CHANNEL_RADAR))
 644                                                 ? "" : "not ");
 645                 }
 646         }
 647
 648         if (cfg->eeprom_params->enhanced_txpower) {
 649                 /*
 650                  * for newer device (6000 series and up)
 651                  * EEPROM contain enhanced tx power information
 652                  * driver need to process addition information
 653                  * to determine the max channel tx power limits
 654                  */
 655                 iwl_eeprom_enhanced_txpower(dev, data, eeprom, eeprom_size,
 656                                             n_channels);
 657         } else {
 658                 /* All others use data from channel map */
 659                 int i;
 660
 661                 data->max_tx_pwr_half_dbm = -128;
 662
 663                 for (i = 0; i < n_channels; i++)
 664                         data->max_tx_pwr_half_dbm =
 665                                 max_t(s8, data->max_tx_pwr_half_dbm,
 666                                       data->channels[i].max_power * 2);
 667         }
 668
 669         /* Check if we do have HT40 channels */
 670         if (cfg->eeprom_params->regulatory_bands[5] ==
 671                                 EEPROM_REGULATORY_BAND_NO_HT40 &&
 672             cfg->eeprom_params->regulatory_bands[6] ==
 673                                 EEPROM_REGULATORY_BAND_NO_HT40)
 674                 return n_channels;
 675
 676         /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */
 677         for (band = 6; band <= 7; band++) {
 678                 enum ieee80211_band ieeeband;
 679
 680                 iwl_init_band_reference(cfg, eeprom, eeprom_size, band,
 681                                         &eeprom_ch_count, &eeprom_ch_info,
 682                                         &eeprom_ch_array);
 683
 684                 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
 685                 ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ
 686                                        : IEEE80211_BAND_5GHZ;
 687
 688                 /* Loop through each band adding each of the channels */
 689                 for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) {
 690                         /* Set up driver's info for lower half */
 691                         iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband,
 692                                                eeprom_ch_array[ch_idx],
 693                                                &eeprom_ch_info[ch_idx],
 694                                                IEEE80211_CHAN_NO_HT40PLUS);
 695
 696                         /* Set up driver's info for upper half */
 697                         iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband,
 698                                                eeprom_ch_array[ch_idx] + 4,
 699                                                &eeprom_ch_info[ch_idx],
 700                                                IEEE80211_CHAN_NO_HT40MINUS);
 701                 }
 702         }
 703
 704         return n_channels;
 705 }
 706
 707 int iwl_init_sband_channels(struct iwl_nvm_data *data,
 708                             struct ieee80211_supported_band *sband,
 709                             int n_channels, enum ieee80211_band band)
 710 {
 711         struct ieee80211_channel *chan = &data->channels[0];
 712         int n = 0, idx = 0;
 713
 714         while (chan->band != band && idx < n_channels)
 715                 chan = &data->channels[++idx];
 716
 717         sband->channels = &data->channels[idx];
 718
 719         while (chan->band == band && idx < n_channels) {
 720                 chan = &data->channels[++idx];
 721                 n++;
 722         }
 723
 724         sband->n_channels = n;
 725
 726         return n;
 727 }
 728
 729 #define MAX_BIT_RATE_40_MHZ     150 /* Mbps */
 730 #define MAX_BIT_RATE_20_MHZ     72 /* Mbps */
 731
 732 void iwl_init_ht_hw_capab(const struct iwl_cfg *cfg,
 733                           struct iwl_nvm_data *data,
 734                           struct ieee80211_sta_ht_cap *ht_info,
 735                           enum ieee80211_band band,
 736                           u8 tx_chains, u8 rx_chains)
 737 {
 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) || !cfg->ht_params) {
 747                 ht_info->ht_supported = false;
 748                 return;
 749         }
 750
 751         ht_info->ht_supported = true;
 752         ht_info->cap = IEEE80211_HT_CAP_DSSSCCK40;
 753
 754         if (cfg->ht_params->stbc) {
 755                 ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
 756
 757                 if (tx_chains > 1)
 758                         ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
 759         }
 760
 761         if (cfg->ht_params->ldpc)
 762                 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
 763
 764         if (iwlwifi_mod_params.amsdu_size_8K)
 765                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
 766
 767         ht_info->ampdu_factor = cfg->max_ht_ampdu_exponent;
 768         ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
 769
 770         ht_info->mcs.rx_mask[0] = 0xFF;
 771         if (rx_chains >= 2)
 772                 ht_info->mcs.rx_mask[1] = 0xFF;
 773         if (rx_chains >= 3)
 774                 ht_info->mcs.rx_mask[2] = 0xFF;
 775
 776         if (cfg->ht_params->ht_greenfield_support)
 777                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
 778         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
 779
 780         max_bit_rate = MAX_BIT_RATE_20_MHZ;
 781
 782         if (cfg->ht_params->ht40_bands & BIT(band)) {
 783                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 784                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
 785                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
 786         }
 787
 788         /* Highest supported Rx data rate */
 789         max_bit_rate *= rx_chains;
 790         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
 791         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
 792
 793         /* Tx MCS capabilities */
 794         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 795         if (tx_chains != rx_chains) {
 796                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
 797                 ht_info->mcs.tx_params |= ((tx_chains - 1) <<
 798                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
 799         }
 800 }
 801
 802 static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
 803                             struct iwl_nvm_data *data,
 804                             const u8 *eeprom, size_t eeprom_size)
 805 {
 806         int n_channels = iwl_init_channel_map(dev, cfg, data,
 807                                               eeprom, eeprom_size);
 808         int n_used = 0;
 809         struct ieee80211_supported_band *sband;
 810
 811         sband = &data->bands[IEEE80211_BAND_2GHZ];
 812         sband->band = IEEE80211_BAND_2GHZ;
 813         sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS];
 814         sband->n_bitrates = N_RATES_24;
 815         n_used += iwl_init_sband_channels(data, sband, n_channels,
 816                                           IEEE80211_BAND_2GHZ);
 817         iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_2GHZ,
 818                              data->valid_tx_ant, data->valid_rx_ant);
 819
 820         sband = &data->bands[IEEE80211_BAND_5GHZ];
 821         sband->band = IEEE80211_BAND_5GHZ;
 822         sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS];
 823         sband->n_bitrates = N_RATES_52;
 824         n_used += iwl_init_sband_channels(data, sband, n_channels,
 825                                           IEEE80211_BAND_5GHZ);
 826         iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_5GHZ,
 827                              data->valid_tx_ant, data->valid_rx_ant);
 828
 829         if (n_channels != n_used)
 830                 IWL_ERR_DEV(dev, "EEPROM: used only %d of %d channels\n",
 831                             n_used, n_channels);
 832 }
 833
 834 /* EEPROM data functions */
 835
 836 struct iwl_nvm_data *
 837 iwl_parse_eeprom_data(struct device *dev, const struct iwl_cfg *cfg,
 838                       const u8 *eeprom, size_t eeprom_size)
 839 {
 840         struct iwl_nvm_data *data;
 841         const void *tmp;
 842         u16 radio_cfg, sku;
 843
 844         if (WARN_ON(!cfg || !cfg->eeprom_params))
 845                 return NULL;
 846
 847         data = kzalloc(sizeof(*data) +
 848                        sizeof(struct ieee80211_channel) * IWL_NUM_CHANNELS,
 849                        GFP_KERNEL);
 850         if (!data)
 851                 return NULL;
 852
 853         /* get MAC address(es) */
 854         tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_MAC_ADDRESS);
 855         if (!tmp)
 856                 goto err_free;
 857         memcpy(data->hw_addr, tmp, ETH_ALEN);
 858         data->n_hw_addrs = iwl_eeprom_query16(eeprom, eeprom_size,
 859                                               EEPROM_NUM_MAC_ADDRESS);
 860
 861         if (iwl_eeprom_read_calib(eeprom, eeprom_size, data))
 862                 goto err_free;
 863
 864         tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_XTAL);
 865         if (!tmp)
 866                 goto err_free;
 867         memcpy(data->xtal_calib, tmp, sizeof(data->xtal_calib));
 868
 869         tmp = iwl_eeprom_query_addr(eeprom, eeprom_size,
 870                                     EEPROM_RAW_TEMPERATURE);
 871         if (!tmp)
 872                 goto err_free;
 873         data->raw_temperature = *(__le16 *)tmp;
 874
 875         tmp = iwl_eeprom_query_addr(eeprom, eeprom_size,
 876                                     EEPROM_KELVIN_TEMPERATURE);
 877         if (!tmp)
 878                 goto err_free;
 879         data->kelvin_temperature = *(__le16 *)tmp;
 880         data->kelvin_voltage = *((__le16 *)tmp + 1);
 881
 882         radio_cfg = iwl_eeprom_query16(eeprom, eeprom_size,
 883                                              EEPROM_RADIO_CONFIG);
 884         data->radio_cfg_dash = EEPROM_RF_CFG_DASH_MSK(radio_cfg);
 885         data->radio_cfg_pnum = EEPROM_RF_CFG_PNUM_MSK(radio_cfg);
 886         data->radio_cfg_step = EEPROM_RF_CFG_STEP_MSK(radio_cfg);
 887         data->radio_cfg_type = EEPROM_RF_CFG_TYPE_MSK(radio_cfg);
 888         data->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg);
 889         data->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg);
 890
 891         sku = iwl_eeprom_query16(eeprom, eeprom_size,
 892                                  EEPROM_SKU_CAP);
 893         data->sku_cap_11n_enable = sku & EEPROM_SKU_CAP_11N_ENABLE;
 894         data->sku_cap_amt_enable = sku & EEPROM_SKU_CAP_AMT_ENABLE;
 895         data->sku_cap_band_24GHz_enable = sku & EEPROM_SKU_CAP_BAND_24GHZ;
 896         data->sku_cap_band_52GHz_enable = sku & EEPROM_SKU_CAP_BAND_52GHZ;
 897         data->sku_cap_ipan_enable = sku & EEPROM_SKU_CAP_IPAN_ENABLE;
 898         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
 899                 data->sku_cap_11n_enable = false;
 900
 901         data->nvm_version = iwl_eeprom_query16(eeprom, eeprom_size,
 902                                                EEPROM_VERSION);
 903
 904         /* check overrides (some devices have wrong EEPROM) */
 905         if (cfg->valid_tx_ant)
 906                 data->valid_tx_ant = cfg->valid_tx_ant;
 907         if (cfg->valid_rx_ant)
 908                 data->valid_rx_ant = cfg->valid_rx_ant;
 909
 910         if (!data->valid_tx_ant || !data->valid_rx_ant) {
 911                 IWL_ERR_DEV(dev, "invalid antennas (0x%x, 0x%x)\n",
 912                             data->valid_tx_ant, data->valid_rx_ant);
 913                 goto err_free;
 914         }
 915
 916         iwl_init_sbands(dev, cfg, data, eeprom, eeprom_size);
 917
 918         return data;
 919  err_free:
 920         kfree(data);
 921         return NULL;
 922 }
 923 IWL_EXPORT_SYMBOL(iwl_parse_eeprom_data);
 924
 925 /* helper functions */
 926 int iwl_nvm_check_version(struct iwl_nvm_data *data,
 927                              struct iwl_trans *trans)
 928 {
 929         if (data->nvm_version >= trans->cfg->nvm_ver ||
 930             data->calib_version >= trans->cfg->nvm_calib_ver) {
 931                 IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n",
 932                                data->nvm_version, data->calib_version);
 933                 return 0;
 934         }
 935
 936         IWL_ERR(trans,
 937                 "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
 938                 data->nvm_version, trans->cfg->nvm_ver,
 939                 data->calib_version,  trans->cfg->nvm_calib_ver);
 940         return -EINVAL;
 941 }
 942 IWL_EXPORT_SYMBOL(iwl_nvm_check_version);