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  *
  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) 2012 - 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  *****************************************************************************/
  63 #include <net/mac80211.h>
  64
  65 #include "iwl-trans.h"
  66 #include "iwl-op-mode.h"
  67 #include "iwl-fw.h"
  68 #include "iwl-debug.h"
  69 #include "iwl-csr.h" /* for iwl_mvm_rx_card_state_notif */
  70 #include "iwl-io.h" /* for iwl_mvm_rx_card_state_notif */
  71 #include "iwl-eeprom-parse.h"
  72
  73 #include "mvm.h"
  74 #include "iwl-phy-db.h"
  75
  76 #define MVM_UCODE_ALIVE_TIMEOUT HZ
  77 #define MVM_UCODE_CALIB_TIMEOUT (2*HZ)
  78
  79 #define UCODE_VALID_OK  cpu_to_le32(0x1)
  80
  81 struct iwl_mvm_alive_data {
  82         bool valid;
  83         u32 scd_base_addr;
  84 };
  85
  86 static inline const struct fw_img *
  87 iwl_get_ucode_image(struct iwl_mvm *mvm, enum iwl_ucode_type ucode_type)
  88 {
  89         if (ucode_type >= IWL_UCODE_TYPE_MAX)
  90                 return NULL;
  91
  92         return &mvm->fw->img[ucode_type];
  93 }
  94
  95 static int iwl_send_tx_ant_cfg(struct iwl_mvm *mvm, u8 valid_tx_ant)
  96 {
  97         struct iwl_tx_ant_cfg_cmd tx_ant_cmd = {
  98                 .valid = cpu_to_le32(valid_tx_ant),
  99         };
 100
 101         IWL_DEBUG_FW(mvm, "select valid tx ant: %u\n", valid_tx_ant);
 102         return iwl_mvm_send_cmd_pdu(mvm, TX_ANT_CONFIGURATION_CMD, CMD_SYNC,
 103                                     sizeof(tx_ant_cmd), &tx_ant_cmd);
 104 }
 105
 106 static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
 107                          struct iwl_rx_packet *pkt, void *data)
 108 {
 109         struct iwl_mvm *mvm =
 110                 container_of(notif_wait, struct iwl_mvm, notif_wait);
 111         struct iwl_mvm_alive_data *alive_data = data;
 112         struct mvm_alive_resp *palive;
 113
 114         palive = (void *)pkt->data;
 115
 116         mvm->error_event_table = le32_to_cpu(palive->error_event_table_ptr);
 117         mvm->log_event_table = le32_to_cpu(palive->log_event_table_ptr);
 118         alive_data->scd_base_addr = le32_to_cpu(palive->scd_base_ptr);
 119
 120         alive_data->valid = le16_to_cpu(palive->status) == IWL_ALIVE_STATUS_OK;
 121         IWL_DEBUG_FW(mvm,
 122                      "Alive ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
 123                      le16_to_cpu(palive->status), palive->ver_type,
 124                      palive->ver_subtype, palive->flags);
 125
 126         return true;
 127 }
 128
 129 static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait,
 130                                   struct iwl_rx_packet *pkt, void *data)
 131 {
 132         struct iwl_phy_db *phy_db = data;
 133
 134         if (pkt->hdr.cmd != CALIB_RES_NOTIF_PHY_DB) {
 135                 WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF);
 136                 return true;
 137         }
 138
 139         WARN_ON(iwl_phy_db_set_section(phy_db, pkt, GFP_ATOMIC));
 140
 141         return false;
 142 }
 143
 144 static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
 145                                          enum iwl_ucode_type ucode_type)
 146 {
 147         struct iwl_notification_wait alive_wait;
 148         struct iwl_mvm_alive_data alive_data;
 149         const struct fw_img *fw;
 150         int ret, i;
 151         enum iwl_ucode_type old_type = mvm->cur_ucode;
 152         static const u8 alive_cmd[] = { MVM_ALIVE };
 153
 154         fw = iwl_get_ucode_image(mvm, ucode_type);
 155         if (WARN_ON(!fw))
 156                 return -EINVAL;
 157         mvm->cur_ucode = ucode_type;
 158         mvm->ucode_loaded = false;
 159
 160         iwl_init_notification_wait(&mvm->notif_wait, &alive_wait,
 161                                    alive_cmd, ARRAY_SIZE(alive_cmd),
 162                                    iwl_alive_fn, &alive_data);
 163
 164         ret = iwl_trans_start_fw(mvm->trans, fw, ucode_type == IWL_UCODE_INIT);
 165         if (ret) {
 166                 mvm->cur_ucode = old_type;
 167                 iwl_remove_notification(&mvm->notif_wait, &alive_wait);
 168                 return ret;
 169         }
 170
 171         /*
 172          * Some things may run in the background now, but we
 173          * just wait for the ALIVE notification here.
 174          */
 175         ret = iwl_wait_notification(&mvm->notif_wait, &alive_wait,
 176                                     MVM_UCODE_ALIVE_TIMEOUT);
 177         if (ret) {
 178                 mvm->cur_ucode = old_type;
 179                 return ret;
 180         }
 181
 182         if (!alive_data.valid) {
 183                 IWL_ERR(mvm, "Loaded ucode is not valid!\n");
 184                 mvm->cur_ucode = old_type;
 185                 return -EIO;
 186         }
 187
 188         iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);
 189
 190         /*
 191          * Note: all the queues are enabled as part of the interface
 192          * initialization, but in firmware restart scenarios they
 193          * could be stopped, so wake them up. In firmware restart,
 194          * mac80211 will have the queues stopped as well until the
 195          * reconfiguration completes. During normal startup, they
 196          * will be empty.
 197          */
 198
 199         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
 200                 if (i < mvm->first_agg_queue && i != IWL_MVM_CMD_QUEUE)
 201                         mvm->queue_to_mac80211[i] = i;
 202                 else
 203                         mvm->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
 204                 atomic_set(&mvm->queue_stop_count[i], 0);
 205         }
 206
 207         mvm->transport_queue_stop = 0;
 208
 209         mvm->ucode_loaded = true;
 210
 211         return 0;
 212 }
 213
 214 static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
 215 {
 216         struct iwl_phy_cfg_cmd phy_cfg_cmd;
 217         enum iwl_ucode_type ucode_type = mvm->cur_ucode;
 218
 219         /* Set parameters */
 220         phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config);
 221         phy_cfg_cmd.calib_control.event_trigger =
 222                 mvm->fw->default_calib[ucode_type].event_trigger;
 223         phy_cfg_cmd.calib_control.flow_trigger =
 224                 mvm->fw->default_calib[ucode_type].flow_trigger;
 225
 226         IWL_DEBUG_INFO(mvm, "Sending Phy CFG command: 0x%x\n",
 227                        phy_cfg_cmd.phy_cfg);
 228
 229         return iwl_mvm_send_cmd_pdu(mvm, PHY_CONFIGURATION_CMD, CMD_SYNC,
 230                                     sizeof(phy_cfg_cmd), &phy_cfg_cmd);
 231 }
 232
 233 int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
 234 {
 235         struct iwl_notification_wait calib_wait;
 236         static const u8 init_complete[] = {
 237                 INIT_COMPLETE_NOTIF,
 238                 CALIB_RES_NOTIF_PHY_DB
 239         };
 240         int ret;
 241
 242         lockdep_assert_held(&mvm->mutex);
 243
 244         if (WARN_ON_ONCE(mvm->init_ucode_complete))
 245                 return 0;
 246
 247         iwl_init_notification_wait(&mvm->notif_wait,
 248                                    &calib_wait,
 249                                    init_complete,
 250                                    ARRAY_SIZE(init_complete),
 251                                    iwl_wait_phy_db_entry,
 252                                    mvm->phy_db);
 253
 254         /* Will also start the device */
 255         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_INIT);
 256         if (ret) {
 257                 IWL_ERR(mvm, "Failed to start INIT ucode: %d\n", ret);
 258                 goto error;
 259         }
 260
 261         ret = iwl_send_bt_prio_tbl(mvm);
 262         if (ret)
 263                 goto error;
 264
 265         /* Read the NVM only at driver load time, no need to do this twice */
 266         if (read_nvm) {
 267                 /* Read nvm */
 268                 ret = iwl_nvm_init(mvm);
 269                 if (ret) {
 270                         IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
 271                         goto error;
 272                 }
 273         }
 274
 275         /* In case we read the NVM from external file, load it to the NIC */
 276         if (iwlwifi_mod_params.nvm_file)
 277                 iwl_mvm_load_nvm_to_nic(mvm);
 278
 279         ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans);
 280         WARN_ON(ret);
 281
 282         /*
 283          * abort after reading the nvm in case RF Kill is on, we will complete
 284          * the init seq later when RF kill will switch to off
 285          */
 286         if (iwl_mvm_is_radio_killed(mvm)) {
 287                 IWL_DEBUG_RF_KILL(mvm,
 288                                   "jump over all phy activities due to RF kill\n");
 289                 iwl_remove_notification(&mvm->notif_wait, &calib_wait);
 290                 ret = 1;
 291                 goto out;
 292         }
 293
 294         /* Send TX valid antennas before triggering calibrations */
 295         ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
 296         if (ret)
 297                 goto error;
 298
 299         /*
 300          * Send phy configurations command to init uCode
 301          * to start the 16.0 uCode init image internal calibrations.
 302          */
 303         ret = iwl_send_phy_cfg_cmd(mvm);
 304         if (ret) {
 305                 IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
 306                         ret);
 307                 goto error;
 308         }
 309
 310         /*
 311          * Some things may run in the background now, but we
 312          * just wait for the calibration complete notification.
 313          */
 314         ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
 315                         MVM_UCODE_CALIB_TIMEOUT);
 316         if (!ret)
 317                 mvm->init_ucode_complete = true;
 318         goto out;
 319
 320 error:
 321         iwl_remove_notification(&mvm->notif_wait, &calib_wait);
 322 out:
 323         if (iwlmvm_mod_params.init_dbg && !mvm->nvm_data) {
 324                 /* we want to debug INIT and we have no NVM - fake */
 325                 mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) +
 326                                         sizeof(struct ieee80211_channel) +
 327                                         sizeof(struct ieee80211_rate),
 328                                         GFP_KERNEL);
 329                 if (!mvm->nvm_data)
 330                         return -ENOMEM;
 331                 mvm->nvm_data->valid_rx_ant = 1;
 332                 mvm->nvm_data->valid_tx_ant = 1;
 333                 mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
 334                 mvm->nvm_data->bands[0].n_channels = 1;
 335                 mvm->nvm_data->bands[0].n_bitrates = 1;
 336                 mvm->nvm_data->bands[0].bitrates =
 337                         (void *)mvm->nvm_data->channels + 1;
 338                 mvm->nvm_data->bands[0].bitrates->hw_value = 10;
 339         }
 340
 341         return ret;
 342 }
 343
 344 #define UCODE_CALIB_TIMEOUT     (2*HZ)
 345
 346 int iwl_mvm_up(struct iwl_mvm *mvm)
 347 {
 348         int ret, i;
 349         struct ieee80211_channel *chan;
 350         struct cfg80211_chan_def chandef;
 351
 352         lockdep_assert_held(&mvm->mutex);
 353
 354         ret = iwl_trans_start_hw(mvm->trans);
 355         if (ret)
 356                 return ret;
 357
 358         /*
 359          * If we haven't completed the run of the init ucode during
 360          * module loading, load init ucode now
 361          * (for example, if we were in RFKILL)
 362          */
 363         if (!mvm->init_ucode_complete) {
 364                 ret = iwl_run_init_mvm_ucode(mvm, false);
 365                 if (ret && !iwlmvm_mod_params.init_dbg) {
 366                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
 367                         /* this can't happen */
 368                         if (WARN_ON(ret > 0))
 369                                 ret = -ERFKILL;
 370                         goto error;
 371                 }
 372                 if (!iwlmvm_mod_params.init_dbg) {
 373                         /*
 374                          * should stop and start HW since that INIT
 375                          * image just loaded
 376                          */
 377                         iwl_trans_stop_device(mvm->trans);
 378                         ret = iwl_trans_start_hw(mvm->trans);
 379                         if (ret)
 380                                 return ret;
 381                 }
 382         }
 383
 384         if (iwlmvm_mod_params.init_dbg)
 385                 return 0;
 386
 387         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
 388         if (ret) {
 389                 IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
 390                 goto error;
 391         }
 392
 393         ret = iwl_mvm_sf_update(mvm, NULL, false);
 394         if (ret)
 395                 IWL_ERR(mvm, "Failed to initialize Smart Fifo\n");
 396
 397         ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
 398         if (ret)
 399                 goto error;
 400
 401         ret = iwl_send_bt_prio_tbl(mvm);
 402         if (ret)
 403                 goto error;
 404
 405         ret = iwl_send_bt_init_conf(mvm);
 406         if (ret)
 407                 goto error;
 408
 409         /* Send phy db control command and then phy db calibration*/
 410         ret = iwl_send_phy_db_data(mvm->phy_db);
 411         if (ret)
 412                 goto error;
 413
 414         ret = iwl_send_phy_cfg_cmd(mvm);
 415         if (ret)
 416                 goto error;
 417
 418         /* init the fw <-> mac80211 STA mapping */
 419         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
 420                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 421
 422         /* Add auxiliary station for scanning */
 423         ret = iwl_mvm_add_aux_sta(mvm);
 424         if (ret)
 425                 goto error;
 426
 427         /* Add all the PHY contexts */
 428         chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
 429         cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
 430         for (i = 0; i < NUM_PHY_CTX; i++) {
 431                 /*
 432                  * The channel used here isn't relevant as it's
 433                  * going to be overwritten in the other flows.
 434                  * For now use the first channel we have.
 435                  */
 436                 ret = iwl_mvm_phy_ctxt_add(mvm, &mvm->phy_ctxts[i],
 437                                            &chandef, 1, 1);
 438                 if (ret)
 439                         goto error;
 440         }
 441
 442         if (mvm->trans->ltr_enabled) {
 443                 struct iwl_ltr_config_cmd cmd = {
 444                         .flags = cpu_to_le32(LTR_CFG_FLAG_FEATURE_ENABLE),
 445                 };
 446
 447                 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, LTR_CONFIG, 0,
 448                                              sizeof(cmd), &cmd));
 449         }
 450
 451         ret = iwl_mvm_power_update_device_mode(mvm);
 452         if (ret)
 453                 goto error;
 454
 455         IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
 456         return 0;
 457  error:
 458         iwl_trans_stop_device(mvm->trans);
 459         return ret;
 460 }
 461
 462 int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
 463 {
 464         int ret, i;
 465
 466         lockdep_assert_held(&mvm->mutex);
 467
 468         ret = iwl_trans_start_hw(mvm->trans);
 469         if (ret)
 470                 return ret;
 471
 472         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_WOWLAN);
 473         if (ret) {
 474                 IWL_ERR(mvm, "Failed to start WoWLAN firmware: %d\n", ret);
 475                 goto error;
 476         }
 477
 478         ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
 479         if (ret)
 480                 goto error;
 481
 482         /* Send phy db control command and then phy db calibration*/
 483         ret = iwl_send_phy_db_data(mvm->phy_db);
 484         if (ret)
 485                 goto error;
 486
 487         ret = iwl_send_phy_cfg_cmd(mvm);
 488         if (ret)
 489                 goto error;
 490
 491         /* init the fw <-> mac80211 STA mapping */
 492         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
 493                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 494
 495         /* Add auxiliary station for scanning */
 496         ret = iwl_mvm_add_aux_sta(mvm);
 497         if (ret)
 498                 goto error;
 499
 500         return 0;
 501  error:
 502         iwl_trans_stop_device(mvm->trans);
 503         return ret;
 504 }
 505
 506 int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
 507                                     struct iwl_rx_cmd_buffer *rxb,
 508                                     struct iwl_device_cmd *cmd)
 509 {
 510         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 511         struct iwl_card_state_notif *card_state_notif = (void *)pkt->data;
 512         u32 flags = le32_to_cpu(card_state_notif->flags);
 513
 514         IWL_DEBUG_RF_KILL(mvm, "Card state received: HW:%s SW:%s CT:%s\n",
 515                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 516                           (flags & SW_CARD_DISABLED) ? "Kill" : "On",
 517                           (flags & CT_KILL_CARD_DISABLED) ?
 518                           "Reached" : "Not reached");
 519
 520         return 0;
 521 }
 522
 523 int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 524                          struct iwl_device_cmd *cmd)
 525 {
 526         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 527         struct iwl_radio_version_notif *radio_version = (void *)pkt->data;
 528
 529         /* TODO: what to do with that? */
 530         IWL_DEBUG_INFO(mvm,
 531                        "Radio version: flavor: 0x%08x, step 0x%08x, dash 0x%08x\n",
 532                        le32_to_cpu(radio_version->radio_flavor),
 533                        le32_to_cpu(radio_version->radio_step),
 534                        le32_to_cpu(radio_version->radio_dash));
 535         return 0;
 536 }