drivers/net/wireless/iwlwifi/mvm/fw.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) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 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
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
  24  *
  25  * The full GNU General Public License is included in this distribution
  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  36  * All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  *
  42  *  * Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  *  * Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
  48  *  * Neither the name Intel Corporation nor the names of its
  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
  58  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  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  *****************************************************************************/
  65 #include <net/mac80211.h>
  66
  67 #include "iwl-trans.h"
  68 #include "iwl-op-mode.h"
  69 #include "iwl-fw.h"
  70 #include "iwl-debug.h"
  71 #include "iwl-csr.h" /* for iwl_mvm_rx_card_state_notif */
  72 #include "iwl-io.h" /* for iwl_mvm_rx_card_state_notif */
  73 #include "iwl-eeprom-parse.h"
  74
  75 #include "mvm.h"
  76 #include "iwl-phy-db.h"
  77
  78 #define MVM_UCODE_ALIVE_TIMEOUT HZ
  79 #define MVM_UCODE_CALIB_TIMEOUT (2*HZ)
  80
  81 #define UCODE_VALID_OK  cpu_to_le32(0x1)
  82
  83 struct iwl_mvm_alive_data {
  84         bool valid;
  85         u32 scd_base_addr;
  86 };
  87
  88 static inline const struct fw_img *
  89 iwl_get_ucode_image(struct iwl_mvm *mvm, enum iwl_ucode_type ucode_type)
  90 {
  91         if (ucode_type >= IWL_UCODE_TYPE_MAX)
  92                 return NULL;
  93
  94         return &mvm->fw->img[ucode_type];
  95 }
  96
  97 static int iwl_send_tx_ant_cfg(struct iwl_mvm *mvm, u8 valid_tx_ant)
  98 {
  99         struct iwl_tx_ant_cfg_cmd tx_ant_cmd = {
 100                 .valid = cpu_to_le32(valid_tx_ant),
 101         };
 102
 103         IWL_DEBUG_FW(mvm, "select valid tx ant: %u\n", valid_tx_ant);
 104         return iwl_mvm_send_cmd_pdu(mvm, TX_ANT_CONFIGURATION_CMD, 0,
 105                                     sizeof(tx_ant_cmd), &tx_ant_cmd);
 106 }
 107
 108 static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
 109                          struct iwl_rx_packet *pkt, void *data)
 110 {
 111         struct iwl_mvm *mvm =
 112                 container_of(notif_wait, struct iwl_mvm, notif_wait);
 113         struct iwl_mvm_alive_data *alive_data = data;
 114         struct mvm_alive_resp *palive;
 115         struct mvm_alive_resp_ver2 *palive2;
 116
 117         if (iwl_rx_packet_payload_len(pkt) == sizeof(*palive)) {
 118                 palive = (void *)pkt->data;
 119
 120                 mvm->support_umac_log = false;
 121                 mvm->error_event_table =
 122                         le32_to_cpu(palive->error_event_table_ptr);
 123                 mvm->log_event_table = le32_to_cpu(palive->log_event_table_ptr);
 124                 alive_data->scd_base_addr = le32_to_cpu(palive->scd_base_ptr);
 125
 126                 alive_data->valid = le16_to_cpu(palive->status) ==
 127                                     IWL_ALIVE_STATUS_OK;
 128                 IWL_DEBUG_FW(mvm,
 129                              "Alive VER1 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
 130                              le16_to_cpu(palive->status), palive->ver_type,
 131                              palive->ver_subtype, palive->flags);
 132         } else {
 133                 palive2 = (void *)pkt->data;
 134
 135                 mvm->error_event_table =
 136                         le32_to_cpu(palive2->error_event_table_ptr);
 137                 mvm->log_event_table =
 138                         le32_to_cpu(palive2->log_event_table_ptr);
 139                 alive_data->scd_base_addr = le32_to_cpu(palive2->scd_base_ptr);
 140                 mvm->umac_error_event_table =
 141                         le32_to_cpu(palive2->error_info_addr);
 142                 mvm->sf_space.addr = le32_to_cpu(palive2->st_fwrd_addr);
 143                 mvm->sf_space.size = le32_to_cpu(palive2->st_fwrd_size);
 144
 145                 alive_data->valid = le16_to_cpu(palive2->status) ==
 146                                     IWL_ALIVE_STATUS_OK;
 147                 if (mvm->umac_error_event_table)
 148                         mvm->support_umac_log = true;
 149
 150                 IWL_DEBUG_FW(mvm,
 151                              "Alive VER2 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
 152                              le16_to_cpu(palive2->status), palive2->ver_type,
 153                              palive2->ver_subtype, palive2->flags);
 154
 155                 IWL_DEBUG_FW(mvm,
 156                              "UMAC version: Major - 0x%x, Minor - 0x%x\n",
 157                              palive2->umac_major, palive2->umac_minor);
 158         }
 159
 160         return true;
 161 }
 162
 163 static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait,
 164                                   struct iwl_rx_packet *pkt, void *data)
 165 {
 166         struct iwl_phy_db *phy_db = data;
 167
 168         if (pkt->hdr.cmd != CALIB_RES_NOTIF_PHY_DB) {
 169                 WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF);
 170                 return true;
 171         }
 172
 173         WARN_ON(iwl_phy_db_set_section(phy_db, pkt, GFP_ATOMIC));
 174
 175         return false;
 176 }
 177
 178 static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
 179                                          enum iwl_ucode_type ucode_type)
 180 {
 181         struct iwl_notification_wait alive_wait;
 182         struct iwl_mvm_alive_data alive_data;
 183         const struct fw_img *fw;
 184         int ret, i;
 185         enum iwl_ucode_type old_type = mvm->cur_ucode;
 186         static const u8 alive_cmd[] = { MVM_ALIVE };
 187         struct iwl_sf_region st_fwrd_space;
 188
 189         fw = iwl_get_ucode_image(mvm, ucode_type);
 190         if (WARN_ON(!fw))
 191                 return -EINVAL;
 192         mvm->cur_ucode = ucode_type;
 193         mvm->ucode_loaded = false;
 194
 195         iwl_init_notification_wait(&mvm->notif_wait, &alive_wait,
 196                                    alive_cmd, ARRAY_SIZE(alive_cmd),
 197                                    iwl_alive_fn, &alive_data);
 198
 199         ret = iwl_trans_start_fw(mvm->trans, fw, ucode_type == IWL_UCODE_INIT);
 200         if (ret) {
 201                 mvm->cur_ucode = old_type;
 202                 iwl_remove_notification(&mvm->notif_wait, &alive_wait);
 203                 return ret;
 204         }
 205
 206         /*
 207          * Some things may run in the background now, but we
 208          * just wait for the ALIVE notification here.
 209          */
 210         ret = iwl_wait_notification(&mvm->notif_wait, &alive_wait,
 211                                     MVM_UCODE_ALIVE_TIMEOUT);
 212         if (ret) {
 213                 mvm->cur_ucode = old_type;
 214                 return ret;
 215         }
 216
 217         if (!alive_data.valid) {
 218                 IWL_ERR(mvm, "Loaded ucode is not valid!\n");
 219                 mvm->cur_ucode = old_type;
 220                 return -EIO;
 221         }
 222
 223         /*
 224          * update the sdio allocation according to the pointer we get in the
 225          * alive notification.
 226          */
 227         st_fwrd_space.addr = mvm->sf_space.addr;
 228         st_fwrd_space.size = mvm->sf_space.size;
 229         ret = iwl_trans_update_sf(mvm->trans, &st_fwrd_space);
 230
 231         iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);
 232
 233         /*
 234          * Note: all the queues are enabled as part of the interface
 235          * initialization, but in firmware restart scenarios they
 236          * could be stopped, so wake them up. In firmware restart,
 237          * mac80211 will have the queues stopped as well until the
 238          * reconfiguration completes. During normal startup, they
 239          * will be empty.
 240          */
 241
 242         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
 243                 if (i < mvm->first_agg_queue && i != IWL_MVM_CMD_QUEUE)
 244                         mvm->queue_to_mac80211[i] = i;
 245                 else
 246                         mvm->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
 247                 atomic_set(&mvm->queue_stop_count[i], 0);
 248         }
 249
 250         mvm->transport_queue_stop = 0;
 251
 252         mvm->ucode_loaded = true;
 253
 254         return 0;
 255 }
 256
 257 static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
 258 {
 259         struct iwl_phy_cfg_cmd phy_cfg_cmd;
 260         enum iwl_ucode_type ucode_type = mvm->cur_ucode;
 261
 262         /* Set parameters */
 263         phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config);
 264         phy_cfg_cmd.calib_control.event_trigger =
 265                 mvm->fw->default_calib[ucode_type].event_trigger;
 266         phy_cfg_cmd.calib_control.flow_trigger =
 267                 mvm->fw->default_calib[ucode_type].flow_trigger;
 268
 269         IWL_DEBUG_INFO(mvm, "Sending Phy CFG command: 0x%x\n",
 270                        phy_cfg_cmd.phy_cfg);
 271
 272         return iwl_mvm_send_cmd_pdu(mvm, PHY_CONFIGURATION_CMD, 0,
 273                                     sizeof(phy_cfg_cmd), &phy_cfg_cmd);
 274 }
 275
 276 int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
 277 {
 278         struct iwl_notification_wait calib_wait;
 279         static const u8 init_complete[] = {
 280                 INIT_COMPLETE_NOTIF,
 281                 CALIB_RES_NOTIF_PHY_DB
 282         };
 283         int ret;
 284
 285         lockdep_assert_held(&mvm->mutex);
 286
 287         if (WARN_ON_ONCE(mvm->init_ucode_complete))
 288                 return 0;
 289
 290         iwl_init_notification_wait(&mvm->notif_wait,
 291                                    &calib_wait,
 292                                    init_complete,
 293                                    ARRAY_SIZE(init_complete),
 294                                    iwl_wait_phy_db_entry,
 295                                    mvm->phy_db);
 296
 297         /* Will also start the device */
 298         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_INIT);
 299         if (ret) {
 300                 IWL_ERR(mvm, "Failed to start INIT ucode: %d\n", ret);
 301                 goto error;
 302         }
 303
 304         ret = iwl_send_bt_init_conf(mvm);
 305         if (ret)
 306                 goto error;
 307
 308         /* Read the NVM only at driver load time, no need to do this twice */
 309         if (read_nvm) {
 310                 /* Read nvm */
 311                 ret = iwl_nvm_init(mvm, true);
 312                 if (ret) {
 313                         IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
 314                         goto error;
 315                 }
 316         }
 317
 318         /* In case we read the NVM from external file, load it to the NIC */
 319         if (mvm->nvm_file_name)
 320                 iwl_mvm_load_nvm_to_nic(mvm);
 321
 322         ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans);
 323         WARN_ON(ret);
 324
 325         /*
 326          * abort after reading the nvm in case RF Kill is on, we will complete
 327          * the init seq later when RF kill will switch to off
 328          */
 329         if (iwl_mvm_is_radio_killed(mvm)) {
 330                 IWL_DEBUG_RF_KILL(mvm,
 331                                   "jump over all phy activities due to RF kill\n");
 332                 iwl_remove_notification(&mvm->notif_wait, &calib_wait);
 333                 ret = 1;
 334                 goto out;
 335         }
 336
 337         /* Send TX valid antennas before triggering calibrations */
 338         ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
 339         if (ret)
 340                 goto error;
 341
 342         /*
 343          * Send phy configurations command to init uCode
 344          * to start the 16.0 uCode init image internal calibrations.
 345          */
 346         ret = iwl_send_phy_cfg_cmd(mvm);
 347         if (ret) {
 348                 IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
 349                         ret);
 350                 goto error;
 351         }
 352
 353         /*
 354          * Some things may run in the background now, but we
 355          * just wait for the calibration complete notification.
 356          */
 357         ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
 358                         MVM_UCODE_CALIB_TIMEOUT);
 359         if (!ret)
 360                 mvm->init_ucode_complete = true;
 361         goto out;
 362
 363 error:
 364         iwl_remove_notification(&mvm->notif_wait, &calib_wait);
 365 out:
 366         if (iwlmvm_mod_params.init_dbg && !mvm->nvm_data) {
 367                 /* we want to debug INIT and we have no NVM - fake */
 368                 mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) +
 369                                         sizeof(struct ieee80211_channel) +
 370                                         sizeof(struct ieee80211_rate),
 371                                         GFP_KERNEL);
 372                 if (!mvm->nvm_data)
 373                         return -ENOMEM;
 374                 mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
 375                 mvm->nvm_data->bands[0].n_channels = 1;
 376                 mvm->nvm_data->bands[0].n_bitrates = 1;
 377                 mvm->nvm_data->bands[0].bitrates =
 378                         (void *)mvm->nvm_data->channels + 1;
 379                 mvm->nvm_data->bands[0].bitrates->hw_value = 10;
 380         }
 381
 382         return ret;
 383 }
 384
 385 int iwl_mvm_up(struct iwl_mvm *mvm)
 386 {
 387         int ret, i;
 388         struct ieee80211_channel *chan;
 389         struct cfg80211_chan_def chandef;
 390
 391         lockdep_assert_held(&mvm->mutex);
 392
 393         ret = iwl_trans_start_hw(mvm->trans);
 394         if (ret)
 395                 return ret;
 396
 397         /*
 398          * If we haven't completed the run of the init ucode during
 399          * module loading, load init ucode now
 400          * (for example, if we were in RFKILL)
 401          */
 402         if (!mvm->init_ucode_complete) {
 403                 ret = iwl_run_init_mvm_ucode(mvm, false);
 404                 if (ret && !iwlmvm_mod_params.init_dbg) {
 405                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
 406                         /* this can't happen */
 407                         if (WARN_ON(ret > 0))
 408                                 ret = -ERFKILL;
 409                         goto error;
 410                 }
 411                 if (!iwlmvm_mod_params.init_dbg) {
 412                         /*
 413                          * should stop and start HW since that INIT
 414                          * image just loaded
 415                          */
 416                         iwl_trans_stop_device(mvm->trans);
 417                         ret = iwl_trans_start_hw(mvm->trans);
 418                         if (ret)
 419                                 return ret;
 420                 }
 421         }
 422
 423         if (iwlmvm_mod_params.init_dbg)
 424                 return 0;
 425
 426         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
 427         if (ret) {
 428                 IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
 429                 goto error;
 430         }
 431
 432         ret = iwl_mvm_sf_update(mvm, NULL, false);
 433         if (ret)
 434                 IWL_ERR(mvm, "Failed to initialize Smart Fifo\n");
 435
 436         ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
 437         if (ret)
 438                 goto error;
 439
 440         ret = iwl_send_bt_init_conf(mvm);
 441         if (ret)
 442                 goto error;
 443
 444         /* Send phy db control command and then phy db calibration*/
 445         ret = iwl_send_phy_db_data(mvm->phy_db);
 446         if (ret)
 447                 goto error;
 448
 449         ret = iwl_send_phy_cfg_cmd(mvm);
 450         if (ret)
 451                 goto error;
 452
 453         /* init the fw <-> mac80211 STA mapping */
 454         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
 455                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 456
 457         /* Add auxiliary station for scanning */
 458         ret = iwl_mvm_add_aux_sta(mvm);
 459         if (ret)
 460                 goto error;
 461
 462         /* Add all the PHY contexts */
 463         chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
 464         cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
 465         for (i = 0; i < NUM_PHY_CTX; i++) {
 466                 /*
 467                  * The channel used here isn't relevant as it's
 468                  * going to be overwritten in the other flows.
 469                  * For now use the first channel we have.
 470                  */
 471                 ret = iwl_mvm_phy_ctxt_add(mvm, &mvm->phy_ctxts[i],
 472                                            &chandef, 1, 1);
 473                 if (ret)
 474                         goto error;
 475         }
 476
 477         /* Initialize tx backoffs to the minimal possible */
 478         iwl_mvm_tt_tx_backoff(mvm, 0);
 479
 480         ret = iwl_mvm_power_update_device(mvm);
 481         if (ret)
 482                 goto error;
 483
 484         /* allow FW/transport low power modes if not during restart */
 485         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 486                 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 487
 488         IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
 489         return 0;
 490  error:
 491         iwl_trans_stop_device(mvm->trans);
 492         return ret;
 493 }
 494
 495 int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
 496 {
 497         int ret, i;
 498
 499         lockdep_assert_held(&mvm->mutex);
 500
 501         ret = iwl_trans_start_hw(mvm->trans);
 502         if (ret)
 503                 return ret;
 504
 505         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_WOWLAN);
 506         if (ret) {
 507                 IWL_ERR(mvm, "Failed to start WoWLAN firmware: %d\n", ret);
 508                 goto error;
 509         }
 510
 511         ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
 512         if (ret)
 513                 goto error;
 514
 515         /* Send phy db control command and then phy db calibration*/
 516         ret = iwl_send_phy_db_data(mvm->phy_db);
 517         if (ret)
 518                 goto error;
 519
 520         ret = iwl_send_phy_cfg_cmd(mvm);
 521         if (ret)
 522                 goto error;
 523
 524         /* init the fw <-> mac80211 STA mapping */
 525         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
 526                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 527
 528         /* Add auxiliary station for scanning */
 529         ret = iwl_mvm_add_aux_sta(mvm);
 530         if (ret)
 531                 goto error;
 532
 533         return 0;
 534  error:
 535         iwl_trans_stop_device(mvm->trans);
 536         return ret;
 537 }
 538
 539 int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
 540                                     struct iwl_rx_cmd_buffer *rxb,
 541                                     struct iwl_device_cmd *cmd)
 542 {
 543         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 544         struct iwl_card_state_notif *card_state_notif = (void *)pkt->data;
 545         u32 flags = le32_to_cpu(card_state_notif->flags);
 546
 547         IWL_DEBUG_RF_KILL(mvm, "Card state received: HW:%s SW:%s CT:%s\n",
 548                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 549                           (flags & SW_CARD_DISABLED) ? "Kill" : "On",
 550                           (flags & CT_KILL_CARD_DISABLED) ?
 551                           "Reached" : "Not reached");
 552
 553         return 0;
 554 }
 555
 556 int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 557                          struct iwl_device_cmd *cmd)
 558 {
 559         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 560         struct iwl_radio_version_notif *radio_version = (void *)pkt->data;
 561
 562         /* TODO: what to do with that? */
 563         IWL_DEBUG_INFO(mvm,
 564                        "Radio version: flavor: 0x%08x, step 0x%08x, dash 0x%08x\n",
 565                        le32_to_cpu(radio_version->radio_flavor),
 566                        le32_to_cpu(radio_version->radio_step),
 567                        le32_to_cpu(radio_version->radio_dash));
 568         return 0;
 569 }