drivers/net/wireless/iwlwifi/iwl-nvm-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  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
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  33  *
  34  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
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  39  * modification, are permitted provided that the following conditions
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  46  *    the documentation and/or other materials provided with the
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  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *****************************************************************************/
  64 #include <linux/types.h>
  65 #include <linux/slab.h>
  66 #include <linux/export.h>
  67 #include <linux/etherdevice.h>
  68 #include <linux/pci.h>
  69 #include "iwl-drv.h"
  70 #include "iwl-modparams.h"
  71 #include "iwl-nvm-parse.h"
  72
  73 /* NVM offsets (in words) definitions */
  74 enum wkp_nvm_offsets {
  75         /* NVM HW-Section offset (in words) definitions */
  76         HW_ADDR = 0x15,
  77
  78         /* NVM SW-Section offset (in words) definitions */
  79         NVM_SW_SECTION = 0x1C0,
  80         NVM_VERSION = 0,
  81         RADIO_CFG = 1,
  82         SKU = 2,
  83         N_HW_ADDRS = 3,
  84         NVM_CHANNELS = 0x1E0 - NVM_SW_SECTION,
  85
  86         /* NVM calibration section offset (in words) definitions */
  87         NVM_CALIB_SECTION = 0x2B8,
  88         XTAL_CALIB = 0x316 - NVM_CALIB_SECTION
  89 };
  90
  91 enum family_8000_nvm_offsets {
  92         /* NVM HW-Section offset (in words) definitions */
  93         HW_ADDR0_WFPM_FAMILY_8000 = 0x12,
  94         HW_ADDR1_WFPM_FAMILY_8000 = 0x16,
  95         HW_ADDR0_PCIE_FAMILY_8000 = 0x8A,
  96         HW_ADDR1_PCIE_FAMILY_8000 = 0x8E,
  97         MAC_ADDRESS_OVERRIDE_FAMILY_8000 = 1,
  98
  99         /* NVM SW-Section offset (in words) definitions */
 100         NVM_SW_SECTION_FAMILY_8000 = 0x1C0,
 101         NVM_VERSION_FAMILY_8000 = 0,
 102         RADIO_CFG_FAMILY_8000 = 0,
 103         SKU_FAMILY_8000 = 2,
 104         N_HW_ADDRS_FAMILY_8000 = 3,
 105
 106         /* NVM REGULATORY -Section offset (in words) definitions */
 107         NVM_CHANNELS_FAMILY_8000 = 0,
 108         NVM_LAR_OFFSET_FAMILY_8000_OLD = 0x4C7,
 109         NVM_LAR_OFFSET_FAMILY_8000 = 0x507,
 110         NVM_LAR_ENABLED_FAMILY_8000 = 0x7,
 111
 112         /* NVM calibration section offset (in words) definitions */
 113         NVM_CALIB_SECTION_FAMILY_8000 = 0x2B8,
 114         XTAL_CALIB_FAMILY_8000 = 0x316 - NVM_CALIB_SECTION_FAMILY_8000
 115 };
 116
 117 /* SKU Capabilities (actual values from NVM definition) */
 118 enum nvm_sku_bits {
 119         NVM_SKU_CAP_BAND_24GHZ          = BIT(0),
 120         NVM_SKU_CAP_BAND_52GHZ          = BIT(1),
 121         NVM_SKU_CAP_11N_ENABLE          = BIT(2),
 122         NVM_SKU_CAP_11AC_ENABLE         = BIT(3),
 123         NVM_SKU_CAP_MIMO_DISABLE        = BIT(5),
 124 };
 125
 126 /*
 127  * These are the channel numbers in the order that they are stored in the NVM
 128  */
 129 static const u8 iwl_nvm_channels[] = {
 130         /* 2.4 GHz */
 131         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
 132         /* 5 GHz */
 133         36, 40, 44 , 48, 52, 56, 60, 64,
 134         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144,
 135         149, 153, 157, 161, 165
 136 };
 137
 138 static const u8 iwl_nvm_channels_family_8000[] = {
 139         /* 2.4 GHz */
 140         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
 141         /* 5 GHz */
 142         36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92,
 143         96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144,
 144         149, 153, 157, 161, 165, 169, 173, 177, 181
 145 };
 146
 147 #define IWL_NUM_CHANNELS                ARRAY_SIZE(iwl_nvm_channels)
 148 #define IWL_NUM_CHANNELS_FAMILY_8000    ARRAY_SIZE(iwl_nvm_channels_family_8000)
 149 #define NUM_2GHZ_CHANNELS               14
 150 #define NUM_2GHZ_CHANNELS_FAMILY_8000   14
 151 #define FIRST_2GHZ_HT_MINUS             5
 152 #define LAST_2GHZ_HT_PLUS               9
 153 #define LAST_5GHZ_HT                    165
 154 #define LAST_5GHZ_HT_FAMILY_8000        181
 155 #define N_HW_ADDR_MASK                  0xF
 156
 157 /* rate data (static) */
 158 static struct ieee80211_rate iwl_cfg80211_rates[] = {
 159         { .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, },
 160         { .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1,
 161           .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
 162         { .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2,
 163           .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
 164         { .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3,
 165           .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
 166         { .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, },
 167         { .bitrate = 9 * 10, .hw_value = 5, .hw_value_short = 5, },
 168         { .bitrate = 12 * 10, .hw_value = 6, .hw_value_short = 6, },
 169         { .bitrate = 18 * 10, .hw_value = 7, .hw_value_short = 7, },
 170         { .bitrate = 24 * 10, .hw_value = 8, .hw_value_short = 8, },
 171         { .bitrate = 36 * 10, .hw_value = 9, .hw_value_short = 9, },
 172         { .bitrate = 48 * 10, .hw_value = 10, .hw_value_short = 10, },
 173         { .bitrate = 54 * 10, .hw_value = 11, .hw_value_short = 11, },
 174 };
 175 #define RATES_24_OFFS   0
 176 #define N_RATES_24      ARRAY_SIZE(iwl_cfg80211_rates)
 177 #define RATES_52_OFFS   4
 178 #define N_RATES_52      (N_RATES_24 - RATES_52_OFFS)
 179
 180 /**
 181  * enum iwl_nvm_channel_flags - channel flags in NVM
 182  * @NVM_CHANNEL_VALID: channel is usable for this SKU/geo
 183  * @NVM_CHANNEL_IBSS: usable as an IBSS channel
 184  * @NVM_CHANNEL_ACTIVE: active scanning allowed
 185  * @NVM_CHANNEL_RADAR: radar detection required
 186  * @NVM_CHANNEL_INDOOR_ONLY: only indoor use is allowed
 187  * @NVM_CHANNEL_GO_CONCURRENT: GO operation is allowed when connected to BSS
 188  *      on same channel on 2.4 or same UNII band on 5.2
 189  * @NVM_CHANNEL_WIDE: 20 MHz channel okay (?)
 190  * @NVM_CHANNEL_40MHZ: 40 MHz channel okay (?)
 191  * @NVM_CHANNEL_80MHZ: 80 MHz channel okay (?)
 192  * @NVM_CHANNEL_160MHZ: 160 MHz channel okay (?)
 193  */
 194 enum iwl_nvm_channel_flags {
 195         NVM_CHANNEL_VALID = BIT(0),
 196         NVM_CHANNEL_IBSS = BIT(1),
 197         NVM_CHANNEL_ACTIVE = BIT(3),
 198         NVM_CHANNEL_RADAR = BIT(4),
 199         NVM_CHANNEL_INDOOR_ONLY = BIT(5),
 200         NVM_CHANNEL_GO_CONCURRENT = BIT(6),
 201         NVM_CHANNEL_WIDE = BIT(8),
 202         NVM_CHANNEL_40MHZ = BIT(9),
 203         NVM_CHANNEL_80MHZ = BIT(10),
 204         NVM_CHANNEL_160MHZ = BIT(11),
 205 };
 206
 207 #define CHECK_AND_PRINT_I(x)    \
 208         ((ch_flags & NVM_CHANNEL_##x) ? # x " " : "")
 209
 210 static u32 iwl_get_channel_flags(u8 ch_num, int ch_idx, bool is_5ghz,
 211                                  u16 nvm_flags, const struct iwl_cfg *cfg)
 212 {
 213         u32 flags = IEEE80211_CHAN_NO_HT40;
 214         u32 last_5ghz_ht = LAST_5GHZ_HT;
 215
 216         if (cfg->device_family == IWL_DEVICE_FAMILY_8000)
 217                 last_5ghz_ht = LAST_5GHZ_HT_FAMILY_8000;
 218
 219         if (!is_5ghz && (nvm_flags & NVM_CHANNEL_40MHZ)) {
 220                 if (ch_num <= LAST_2GHZ_HT_PLUS)
 221                         flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
 222                 if (ch_num >= FIRST_2GHZ_HT_MINUS)
 223                         flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
 224         } else if (ch_num <= last_5ghz_ht && (nvm_flags & NVM_CHANNEL_40MHZ)) {
 225                 if ((ch_idx - NUM_2GHZ_CHANNELS) % 2 == 0)
 226                         flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
 227                 else
 228                         flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
 229         }
 230         if (!(nvm_flags & NVM_CHANNEL_80MHZ))
 231                 flags |= IEEE80211_CHAN_NO_80MHZ;
 232         if (!(nvm_flags & NVM_CHANNEL_160MHZ))
 233                 flags |= IEEE80211_CHAN_NO_160MHZ;
 234
 235         if (!(nvm_flags & NVM_CHANNEL_IBSS))
 236                 flags |= IEEE80211_CHAN_NO_IR;
 237
 238         if (!(nvm_flags & NVM_CHANNEL_ACTIVE))
 239                 flags |= IEEE80211_CHAN_NO_IR;
 240
 241         if (nvm_flags & NVM_CHANNEL_RADAR)
 242                 flags |= IEEE80211_CHAN_RADAR;
 243
 244         if (nvm_flags & NVM_CHANNEL_INDOOR_ONLY)
 245                 flags |= IEEE80211_CHAN_INDOOR_ONLY;
 246
 247         /* Set the GO concurrent flag only in case that NO_IR is set.
 248          * Otherwise it is meaningless
 249          */
 250         if ((nvm_flags & NVM_CHANNEL_GO_CONCURRENT) &&
 251             (flags & IEEE80211_CHAN_NO_IR))
 252                 flags |= IEEE80211_CHAN_IR_CONCURRENT;
 253
 254         return flags;
 255 }
 256
 257 static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
 258                                 struct iwl_nvm_data *data,
 259                                 const __le16 * const nvm_ch_flags,
 260                                 bool lar_supported)
 261 {
 262         int ch_idx;
 263         int n_channels = 0;
 264         struct ieee80211_channel *channel;
 265         u16 ch_flags;
 266         bool is_5ghz;
 267         int num_of_ch, num_2ghz_channels;
 268         const u8 *nvm_chan;
 269
 270         if (cfg->device_family != IWL_DEVICE_FAMILY_8000) {
 271                 num_of_ch = IWL_NUM_CHANNELS;
 272                 nvm_chan = &iwl_nvm_channels[0];
 273                 num_2ghz_channels = NUM_2GHZ_CHANNELS;
 274         } else {
 275                 num_of_ch = IWL_NUM_CHANNELS_FAMILY_8000;
 276                 nvm_chan = &iwl_nvm_channels_family_8000[0];
 277                 num_2ghz_channels = NUM_2GHZ_CHANNELS_FAMILY_8000;
 278         }
 279
 280         for (ch_idx = 0; ch_idx < num_of_ch; ch_idx++) {
 281                 ch_flags = __le16_to_cpup(nvm_ch_flags + ch_idx);
 282
 283                 if (ch_idx >= num_2ghz_channels &&
 284                     !data->sku_cap_band_52GHz_enable)
 285                         continue;
 286
 287                 if (!lar_supported && !(ch_flags & NVM_CHANNEL_VALID)) {
 288                         /*
 289                          * Channels might become valid later if lar is
 290                          * supported, hence we still want to add them to
 291                          * the list of supported channels to cfg80211.
 292                          */
 293                         IWL_DEBUG_EEPROM(dev,
 294                                          "Ch. %d Flags %x [%sGHz] - No traffic\n",
 295                                          nvm_chan[ch_idx],
 296                                          ch_flags,
 297                                          (ch_idx >= num_2ghz_channels) ?
 298                                          "5.2" : "2.4");
 299                         continue;
 300                 }
 301
 302                 channel = &data->channels[n_channels];
 303                 n_channels++;
 304
 305                 channel->hw_value = nvm_chan[ch_idx];
 306                 channel->band = (ch_idx < num_2ghz_channels) ?
 307                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
 308                 channel->center_freq =
 309                         ieee80211_channel_to_frequency(
 310                                 channel->hw_value, channel->band);
 311
 312                 /* Initialize regulatory-based run-time data */
 313
 314                 /*
 315                  * Default value - highest tx power value.  max_power
 316                  * is not used in mvm, and is used for backwards compatibility
 317                  */
 318                 channel->max_power = IWL_DEFAULT_MAX_TX_POWER;
 319                 is_5ghz = channel->band == IEEE80211_BAND_5GHZ;
 320
 321                 /* don't put limitations in case we're using LAR */
 322                 if (!lar_supported)
 323                         channel->flags = iwl_get_channel_flags(nvm_chan[ch_idx],
 324                                                                ch_idx, is_5ghz,
 325                                                                ch_flags, cfg);
 326                 else
 327                         channel->flags = 0;
 328
 329                 IWL_DEBUG_EEPROM(dev,
 330                                  "Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n",
 331                                  channel->hw_value,
 332                                  is_5ghz ? "5.2" : "2.4",
 333                                  CHECK_AND_PRINT_I(VALID),
 334                                  CHECK_AND_PRINT_I(IBSS),
 335                                  CHECK_AND_PRINT_I(ACTIVE),
 336                                  CHECK_AND_PRINT_I(RADAR),
 337                                  CHECK_AND_PRINT_I(WIDE),
 338                                  CHECK_AND_PRINT_I(INDOOR_ONLY),
 339                                  CHECK_AND_PRINT_I(GO_CONCURRENT),
 340                                  ch_flags,
 341                                  channel->max_power,
 342                                  ((ch_flags & NVM_CHANNEL_IBSS) &&
 343                                   !(ch_flags & NVM_CHANNEL_RADAR))
 344                                         ? "" : "not ");
 345         }
 346
 347         return n_channels;
 348 }
 349
 350 static void iwl_init_vht_hw_capab(const struct iwl_cfg *cfg,
 351                                   struct iwl_nvm_data *data,
 352                                   struct ieee80211_sta_vht_cap *vht_cap,
 353                                   u8 tx_chains, u8 rx_chains)
 354 {
 355         int num_rx_ants = num_of_ant(rx_chains);
 356         int num_tx_ants = num_of_ant(tx_chains);
 357         unsigned int max_ampdu_exponent = (cfg->max_vht_ampdu_exponent ?:
 358                                            IEEE80211_VHT_MAX_AMPDU_1024K);
 359
 360         vht_cap->vht_supported = true;
 361
 362         vht_cap->cap = IEEE80211_VHT_CAP_SHORT_GI_80 |
 363                        IEEE80211_VHT_CAP_RXSTBC_1 |
 364                        IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
 365                        3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT |
 366                        max_ampdu_exponent <<
 367                        IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
 368
 369         if (cfg->ht_params->ldpc)
 370                 vht_cap->cap |= IEEE80211_VHT_CAP_RXLDPC;
 371
 372         if (data->sku_cap_mimo_disabled) {
 373                 num_rx_ants = 1;
 374                 num_tx_ants = 1;
 375         }
 376
 377         if (num_tx_ants > 1)
 378                 vht_cap->cap |= IEEE80211_VHT_CAP_TXSTBC;
 379         else
 380                 vht_cap->cap |= IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN;
 381
 382         if (iwlwifi_mod_params.amsdu_size_8K)
 383                 vht_cap->cap |= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991;
 384
 385         vht_cap->vht_mcs.rx_mcs_map =
 386                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
 387                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
 388                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
 389                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
 390                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
 391                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
 392                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
 393                             IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
 394
 395         if (num_rx_ants == 1 || cfg->rx_with_siso_diversity) {
 396                 vht_cap->cap |= IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN;
 397                 /* this works because NOT_SUPPORTED == 3 */
 398                 vht_cap->vht_mcs.rx_mcs_map |=
 399                         cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << 2);
 400         }
 401
 402         vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
 403 }
 404
 405 static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
 406                             struct iwl_nvm_data *data,
 407                             const __le16 *ch_section,
 408                             u8 tx_chains, u8 rx_chains, bool lar_supported)
 409 {
 410         int n_channels;
 411         int n_used = 0;
 412         struct ieee80211_supported_band *sband;
 413
 414         if (cfg->device_family != IWL_DEVICE_FAMILY_8000)
 415                 n_channels = iwl_init_channel_map(
 416                                 dev, cfg, data,
 417                                 &ch_section[NVM_CHANNELS], lar_supported);
 418         else
 419                 n_channels = iwl_init_channel_map(
 420                                 dev, cfg, data,
 421                                 &ch_section[NVM_CHANNELS_FAMILY_8000],
 422                                 lar_supported);
 423
 424         sband = &data->bands[IEEE80211_BAND_2GHZ];
 425         sband->band = IEEE80211_BAND_2GHZ;
 426         sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS];
 427         sband->n_bitrates = N_RATES_24;
 428         n_used += iwl_init_sband_channels(data, sband, n_channels,
 429                                           IEEE80211_BAND_2GHZ);
 430         iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_2GHZ,
 431                              tx_chains, rx_chains);
 432
 433         sband = &data->bands[IEEE80211_BAND_5GHZ];
 434         sband->band = IEEE80211_BAND_5GHZ;
 435         sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS];
 436         sband->n_bitrates = N_RATES_52;
 437         n_used += iwl_init_sband_channels(data, sband, n_channels,
 438                                           IEEE80211_BAND_5GHZ);
 439         iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_5GHZ,
 440                              tx_chains, rx_chains);
 441         if (data->sku_cap_11ac_enable)
 442                 iwl_init_vht_hw_capab(cfg, data, &sband->vht_cap,
 443                                       tx_chains, rx_chains);
 444
 445         if (n_channels != n_used)
 446                 IWL_ERR_DEV(dev, "NVM: used only %d of %d channels\n",
 447                             n_used, n_channels);
 448 }
 449
 450 static int iwl_get_sku(const struct iwl_cfg *cfg, const __le16 *nvm_sw,
 451                        const __le16 *phy_sku)
 452 {
 453         if (cfg->device_family != IWL_DEVICE_FAMILY_8000)
 454                 return le16_to_cpup(nvm_sw + SKU);
 455
 456         return le32_to_cpup((__le32 *)(phy_sku + SKU_FAMILY_8000));
 457 }
 458
 459 static int iwl_get_nvm_version(const struct iwl_cfg *cfg, const __le16 *nvm_sw)
 460 {
 461         if (cfg->device_family != IWL_DEVICE_FAMILY_8000)
 462                 return le16_to_cpup(nvm_sw + NVM_VERSION);
 463         else
 464                 return le32_to_cpup((__le32 *)(nvm_sw +
 465                                                NVM_VERSION_FAMILY_8000));
 466 }
 467
 468 static int iwl_get_radio_cfg(const struct iwl_cfg *cfg, const __le16 *nvm_sw,
 469                              const __le16 *phy_sku)
 470 {
 471         if (cfg->device_family != IWL_DEVICE_FAMILY_8000)
 472                 return le16_to_cpup(nvm_sw + RADIO_CFG);
 473
 474         return le32_to_cpup((__le32 *)(nvm_sw + RADIO_CFG_FAMILY_8000));
 475
 476 }
 477
 478 static int iwl_get_n_hw_addrs(const struct iwl_cfg *cfg, const __le16 *nvm_sw)
 479 {
 480         int n_hw_addr;
 481
 482         if (cfg->device_family != IWL_DEVICE_FAMILY_8000)
 483                 return le16_to_cpup(nvm_sw + N_HW_ADDRS);
 484
 485         n_hw_addr = le32_to_cpup((__le32 *)(nvm_sw + N_HW_ADDRS_FAMILY_8000));
 486
 487         return n_hw_addr & N_HW_ADDR_MASK;
 488 }
 489
 490 static void iwl_set_radio_cfg(const struct iwl_cfg *cfg,
 491                               struct iwl_nvm_data *data,
 492                               u32 radio_cfg)
 493 {
 494         if (cfg->device_family != IWL_DEVICE_FAMILY_8000) {
 495                 data->radio_cfg_type = NVM_RF_CFG_TYPE_MSK(radio_cfg);
 496                 data->radio_cfg_step = NVM_RF_CFG_STEP_MSK(radio_cfg);
 497                 data->radio_cfg_dash = NVM_RF_CFG_DASH_MSK(radio_cfg);
 498                 data->radio_cfg_pnum = NVM_RF_CFG_PNUM_MSK(radio_cfg);
 499                 return;
 500         }
 501
 502         /* set the radio configuration for family 8000 */
 503         data->radio_cfg_type = NVM_RF_CFG_TYPE_MSK_FAMILY_8000(radio_cfg);
 504         data->radio_cfg_step = NVM_RF_CFG_STEP_MSK_FAMILY_8000(radio_cfg);
 505         data->radio_cfg_dash = NVM_RF_CFG_DASH_MSK_FAMILY_8000(radio_cfg);
 506         data->radio_cfg_pnum = NVM_RF_CFG_FLAVOR_MSK_FAMILY_8000(radio_cfg);
 507         data->valid_tx_ant = NVM_RF_CFG_TX_ANT_MSK_FAMILY_8000(radio_cfg);
 508         data->valid_rx_ant = NVM_RF_CFG_RX_ANT_MSK_FAMILY_8000(radio_cfg);
 509 }
 510
 511 static void iwl_set_hw_address(const struct iwl_cfg *cfg,
 512                                struct iwl_nvm_data *data,
 513                                const __le16 *nvm_sec)
 514 {
 515         const u8 *hw_addr = (const u8 *)(nvm_sec + HW_ADDR);
 516
 517         /* The byte order is little endian 16 bit, meaning 214365 */
 518         data->hw_addr[0] = hw_addr[1];
 519         data->hw_addr[1] = hw_addr[0];
 520         data->hw_addr[2] = hw_addr[3];
 521         data->hw_addr[3] = hw_addr[2];
 522         data->hw_addr[4] = hw_addr[5];
 523         data->hw_addr[5] = hw_addr[4];
 524 }
 525
 526 static void iwl_set_hw_address_family_8000(struct device *dev,
 527                                            const struct iwl_cfg *cfg,
 528                                            struct iwl_nvm_data *data,
 529                                            const __le16 *mac_override,
 530                                            const __le16 *nvm_hw,
 531                                            u32 mac_addr0, u32 mac_addr1)
 532 {
 533         const u8 *hw_addr;
 534
 535         if (mac_override) {
 536                 static const u8 reserved_mac[] = {
 537                         0x02, 0xcc, 0xaa, 0xff, 0xee, 0x00
 538                 };
 539
 540                 hw_addr = (const u8 *)(mac_override +
 541                                  MAC_ADDRESS_OVERRIDE_FAMILY_8000);
 542
 543                 /* The byte order is little endian 16 bit, meaning 214365 */
 544                 data->hw_addr[0] = hw_addr[1];
 545                 data->hw_addr[1] = hw_addr[0];
 546                 data->hw_addr[2] = hw_addr[3];
 547                 data->hw_addr[3] = hw_addr[2];
 548                 data->hw_addr[4] = hw_addr[5];
 549                 data->hw_addr[5] = hw_addr[4];
 550
 551                 /*
 552                  * Force the use of the OTP MAC address in case of reserved MAC
 553                  * address in the NVM, or if address is given but invalid.
 554                  */
 555                 if (is_valid_ether_addr(data->hw_addr) &&
 556                     memcmp(reserved_mac, hw_addr, ETH_ALEN) != 0)
 557                         return;
 558
 559                 IWL_ERR_DEV(dev,
 560                             "mac address from nvm override section is not valid\n");
 561         }
 562
 563         if (nvm_hw) {
 564                 /* read the MAC address from HW resisters */
 565                 hw_addr = (const u8 *)&mac_addr0;
 566                 data->hw_addr[0] = hw_addr[3];
 567                 data->hw_addr[1] = hw_addr[2];
 568                 data->hw_addr[2] = hw_addr[1];
 569                 data->hw_addr[3] = hw_addr[0];
 570
 571                 hw_addr = (const u8 *)&mac_addr1;
 572                 data->hw_addr[4] = hw_addr[1];
 573                 data->hw_addr[5] = hw_addr[0];
 574
 575                 if (!is_valid_ether_addr(data->hw_addr))
 576                         IWL_ERR_DEV(dev,
 577                                     "mac address from hw section is not valid\n");
 578
 579                 return;
 580         }
 581
 582         IWL_ERR_DEV(dev, "mac address is not found\n");
 583 }
 584
 585 struct iwl_nvm_data *
 586 iwl_parse_nvm_data(struct device *dev, const struct iwl_cfg *cfg,
 587                    const __le16 *nvm_hw, const __le16 *nvm_sw,
 588                    const __le16 *nvm_calib, const __le16 *regulatory,
 589                    const __le16 *mac_override, const __le16 *phy_sku,
 590                    u8 tx_chains, u8 rx_chains, bool lar_fw_supported,
 591                    u32 mac_addr0, u32 mac_addr1)
 592 {
 593         struct iwl_nvm_data *data;
 594         u32 sku;
 595         u32 radio_cfg;
 596         u16 lar_config;
 597
 598         if (cfg->device_family != IWL_DEVICE_FAMILY_8000)
 599                 data = kzalloc(sizeof(*data) +
 600                                sizeof(struct ieee80211_channel) *
 601                                IWL_NUM_CHANNELS,
 602                                GFP_KERNEL);
 603         else
 604                 data = kzalloc(sizeof(*data) +
 605                                sizeof(struct ieee80211_channel) *
 606                                IWL_NUM_CHANNELS_FAMILY_8000,
 607                                GFP_KERNEL);
 608         if (!data)
 609                 return NULL;
 610
 611         data->nvm_version = iwl_get_nvm_version(cfg, nvm_sw);
 612
 613         radio_cfg = iwl_get_radio_cfg(cfg, nvm_sw, phy_sku);
 614         iwl_set_radio_cfg(cfg, data, radio_cfg);
 615         if (data->valid_tx_ant)
 616                 tx_chains &= data->valid_tx_ant;
 617         if (data->valid_rx_ant)
 618                 rx_chains &= data->valid_rx_ant;
 619
 620         sku = iwl_get_sku(cfg, nvm_sw, phy_sku);
 621         data->sku_cap_band_24GHz_enable = sku & NVM_SKU_CAP_BAND_24GHZ;
 622         data->sku_cap_band_52GHz_enable = sku & NVM_SKU_CAP_BAND_52GHZ;
 623         data->sku_cap_11n_enable = sku & NVM_SKU_CAP_11N_ENABLE;
 624         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
 625                 data->sku_cap_11n_enable = false;
 626         data->sku_cap_11ac_enable = data->sku_cap_11n_enable &&
 627                                     (sku & NVM_SKU_CAP_11AC_ENABLE);
 628         data->sku_cap_mimo_disabled = sku & NVM_SKU_CAP_MIMO_DISABLE;
 629
 630         data->n_hw_addrs = iwl_get_n_hw_addrs(cfg, nvm_sw);
 631
 632         if (cfg->device_family != IWL_DEVICE_FAMILY_8000) {
 633                 /* Checking for required sections */
 634                 if (!nvm_calib) {
 635                         IWL_ERR_DEV(dev,
 636                                     "Can't parse empty Calib NVM sections\n");
 637                         kfree(data);
 638                         return NULL;
 639                 }
 640                 /* in family 8000 Xtal calibration values moved to OTP */
 641                 data->xtal_calib[0] = *(nvm_calib + XTAL_CALIB);
 642                 data->xtal_calib[1] = *(nvm_calib + XTAL_CALIB + 1);
 643         }
 644
 645         if (cfg->device_family != IWL_DEVICE_FAMILY_8000) {
 646                 iwl_set_hw_address(cfg, data, nvm_hw);
 647
 648                 iwl_init_sbands(dev, cfg, data, nvm_sw,
 649                                 tx_chains, rx_chains, lar_fw_supported);
 650         } else {
 651                 u16 lar_offset = data->nvm_version < 0xE39 ?
 652                                  NVM_LAR_OFFSET_FAMILY_8000_OLD :
 653                                  NVM_LAR_OFFSET_FAMILY_8000;
 654
 655                 lar_config = le16_to_cpup(regulatory + lar_offset);
 656                 data->lar_enabled = !!(lar_config &
 657                                        NVM_LAR_ENABLED_FAMILY_8000);
 658
 659                 /* MAC address in family 8000 */
 660                 iwl_set_hw_address_family_8000(dev, cfg, data, mac_override,
 661                                                nvm_hw, mac_addr0, mac_addr1);
 662
 663                 iwl_init_sbands(dev, cfg, data, regulatory,
 664                                 tx_chains, rx_chains,
 665                                 lar_fw_supported && data->lar_enabled);
 666         }
 667
 668         data->calib_version = 255;
 669
 670         return data;
 671 }
 672 IWL_EXPORT_SYMBOL(iwl_parse_nvm_data);
 673
 674 static u32 iwl_nvm_get_regdom_bw_flags(const u8 *nvm_chan,
 675                                        int ch_idx, u16 nvm_flags,
 676                                        const struct iwl_cfg *cfg)
 677 {
 678         u32 flags = NL80211_RRF_NO_HT40;
 679         u32 last_5ghz_ht = LAST_5GHZ_HT;
 680
 681         if (cfg->device_family == IWL_DEVICE_FAMILY_8000)
 682                 last_5ghz_ht = LAST_5GHZ_HT_FAMILY_8000;
 683
 684         if (ch_idx < NUM_2GHZ_CHANNELS &&
 685             (nvm_flags & NVM_CHANNEL_40MHZ)) {
 686                 if (nvm_chan[ch_idx] <= LAST_2GHZ_HT_PLUS)
 687                         flags &= ~NL80211_RRF_NO_HT40PLUS;
 688                 if (nvm_chan[ch_idx] >= FIRST_2GHZ_HT_MINUS)
 689                         flags &= ~NL80211_RRF_NO_HT40MINUS;
 690         } else if (nvm_chan[ch_idx] <= last_5ghz_ht &&
 691                    (nvm_flags & NVM_CHANNEL_40MHZ)) {
 692                 if ((ch_idx - NUM_2GHZ_CHANNELS) % 2 == 0)
 693                         flags &= ~NL80211_RRF_NO_HT40PLUS;
 694                 else
 695                         flags &= ~NL80211_RRF_NO_HT40MINUS;
 696         }
 697
 698         if (!(nvm_flags & NVM_CHANNEL_80MHZ))
 699                 flags |= NL80211_RRF_NO_80MHZ;
 700         if (!(nvm_flags & NVM_CHANNEL_160MHZ))
 701                 flags |= NL80211_RRF_NO_160MHZ;
 702
 703         if (!(nvm_flags & NVM_CHANNEL_ACTIVE))
 704                 flags |= NL80211_RRF_NO_IR;
 705
 706         if (nvm_flags & NVM_CHANNEL_RADAR)
 707                 flags |= NL80211_RRF_DFS;
 708
 709         if (nvm_flags & NVM_CHANNEL_INDOOR_ONLY)
 710                 flags |= NL80211_RRF_NO_OUTDOOR;
 711
 712         /* Set the GO concurrent flag only in case that NO_IR is set.
 713          * Otherwise it is meaningless
 714          */
 715         if ((nvm_flags & NVM_CHANNEL_GO_CONCURRENT) &&
 716             (flags & NL80211_RRF_NO_IR))
 717                 flags |= NL80211_RRF_GO_CONCURRENT;
 718
 719         return flags;
 720 }
 721
 722 struct ieee80211_regdomain *
 723 iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg,
 724                        int num_of_ch, __le32 *channels, u16 fw_mcc)
 725 {
 726         int ch_idx;
 727         u16 ch_flags, prev_ch_flags = 0;
 728         const u8 *nvm_chan = cfg->device_family == IWL_DEVICE_FAMILY_8000 ?
 729                              iwl_nvm_channels_family_8000 : iwl_nvm_channels;
 730         struct ieee80211_regdomain *regd;
 731         int size_of_regd;
 732         struct ieee80211_reg_rule *rule;
 733         enum ieee80211_band band;
 734         int center_freq, prev_center_freq = 0;
 735         int valid_rules = 0;
 736         bool new_rule;
 737         int max_num_ch = cfg->device_family == IWL_DEVICE_FAMILY_8000 ?
 738                          IWL_NUM_CHANNELS_FAMILY_8000 : IWL_NUM_CHANNELS;
 739
 740         if (WARN_ON_ONCE(num_of_ch > NL80211_MAX_SUPP_REG_RULES))
 741                 return ERR_PTR(-EINVAL);
 742
 743         if (WARN_ON(num_of_ch > max_num_ch))
 744                 num_of_ch = max_num_ch;
 745
 746         IWL_DEBUG_DEV(dev, IWL_DL_LAR, "building regdom for %d channels\n",
 747                       num_of_ch);
 748
 749         /* build a regdomain rule for every valid channel */
 750         size_of_regd =
 751                 sizeof(struct ieee80211_regdomain) +
 752                 num_of_ch * sizeof(struct ieee80211_reg_rule);
 753
 754         regd = kzalloc(size_of_regd, GFP_KERNEL);
 755         if (!regd)
 756                 return ERR_PTR(-ENOMEM);
 757
 758         for (ch_idx = 0; ch_idx < num_of_ch; ch_idx++) {
 759                 ch_flags = (u16)__le32_to_cpup(channels + ch_idx);
 760                 band = (ch_idx < NUM_2GHZ_CHANNELS) ?
 761                        IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
 762                 center_freq = ieee80211_channel_to_frequency(nvm_chan[ch_idx],
 763                                                              band);
 764                 new_rule = false;
 765
 766                 if (!(ch_flags & NVM_CHANNEL_VALID)) {
 767                         IWL_DEBUG_DEV(dev, IWL_DL_LAR,
 768                                       "Ch. %d Flags %x [%sGHz] - No traffic\n",
 769                                       nvm_chan[ch_idx],
 770                                       ch_flags,
 771                                       (ch_idx >= NUM_2GHZ_CHANNELS) ?
 772                                       "5.2" : "2.4");
 773                         continue;
 774                 }
 775
 776                 /* we can't continue the same rule */
 777                 if (ch_idx == 0 || prev_ch_flags != ch_flags ||
 778                     center_freq - prev_center_freq > 20) {
 779                         valid_rules++;
 780                         new_rule = true;
 781                 }
 782
 783                 rule = &regd->reg_rules[valid_rules - 1];
 784
 785                 if (new_rule)
 786                         rule->freq_range.start_freq_khz =
 787                                                 MHZ_TO_KHZ(center_freq - 10);
 788
 789                 rule->freq_range.end_freq_khz = MHZ_TO_KHZ(center_freq + 10);
 790
 791                 /* this doesn't matter - not used by FW */
 792                 rule->power_rule.max_antenna_gain = DBI_TO_MBI(6);
 793                 rule->power_rule.max_eirp =
 794                         DBM_TO_MBM(IWL_DEFAULT_MAX_TX_POWER);
 795
 796                 rule->flags = iwl_nvm_get_regdom_bw_flags(nvm_chan, ch_idx,
 797                                                           ch_flags, cfg);
 798
 799                 /* rely on auto-calculation to merge BW of contiguous chans */
 800                 rule->flags |= NL80211_RRF_AUTO_BW;
 801                 rule->freq_range.max_bandwidth_khz = 0;
 802
 803                 prev_ch_flags = ch_flags;
 804                 prev_center_freq = center_freq;
 805
 806                 IWL_DEBUG_DEV(dev, IWL_DL_LAR,
 807                               "Ch. %d [%sGHz] %s%s%s%s%s%s%s%s%s(0x%02x): Ad-Hoc %ssupported\n",
 808                               center_freq,
 809                               band == IEEE80211_BAND_5GHZ ? "5.2" : "2.4",
 810                               CHECK_AND_PRINT_I(VALID),
 811                               CHECK_AND_PRINT_I(ACTIVE),
 812                               CHECK_AND_PRINT_I(RADAR),
 813                               CHECK_AND_PRINT_I(WIDE),
 814                               CHECK_AND_PRINT_I(40MHZ),
 815                               CHECK_AND_PRINT_I(80MHZ),
 816                               CHECK_AND_PRINT_I(160MHZ),
 817                               CHECK_AND_PRINT_I(INDOOR_ONLY),
 818                               CHECK_AND_PRINT_I(GO_CONCURRENT),
 819                               ch_flags,
 820                               ((ch_flags & NVM_CHANNEL_ACTIVE) &&
 821                                !(ch_flags & NVM_CHANNEL_RADAR))
 822                                          ? "" : "not ");
 823         }
 824
 825         regd->n_reg_rules = valid_rules;
 826
 827         /* set alpha2 from FW. */
 828         regd->alpha2[0] = fw_mcc >> 8;
 829         regd->alpha2[1] = fw_mcc & 0xff;
 830
 831         return regd;
 832 }
 833 IWL_EXPORT_SYMBOL(iwl_parse_nvm_mcc_info);