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, 0,
 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         struct mvm_alive_resp_ver2 *palive2;
 114
 115         if (iwl_rx_packet_payload_len(pkt) == sizeof(*palive)) {
 116                 palive = (void *)pkt->data;
 117
 118                 mvm->support_umac_log = false;
 119                 mvm->error_event_table =
 120                         le32_to_cpu(palive->error_event_table_ptr);
 121                 mvm->log_event_table = le32_to_cpu(palive->log_event_table_ptr);
 122                 alive_data->scd_base_addr = le32_to_cpu(palive->scd_base_ptr);
 123
 124                 alive_data->valid = le16_to_cpu(palive->status) ==
 125                                     IWL_ALIVE_STATUS_OK;
 126                 IWL_DEBUG_FW(mvm,
 127                              "Alive VER1 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
 128                              le16_to_cpu(palive->status), palive->ver_type,
 129                              palive->ver_subtype, palive->flags);
 130         } else {
 131                 palive2 = (void *)pkt->data;
 132
 133                 mvm->error_event_table =
 134                         le32_to_cpu(palive2->error_event_table_ptr);
 135                 mvm->log_event_table =
 136                         le32_to_cpu(palive2->log_event_table_ptr);
 137                 alive_data->scd_base_addr = le32_to_cpu(palive2->scd_base_ptr);
 138                 mvm->umac_error_event_table =
 139                         le32_to_cpu(palive2->error_info_addr);
 140
 141                 alive_data->valid = le16_to_cpu(palive2->status) ==
 142                                     IWL_ALIVE_STATUS_OK;
 143                 if (mvm->umac_error_event_table)
 144                         mvm->support_umac_log = true;
 145
 146                 IWL_DEBUG_FW(mvm,
 147                              "Alive VER2 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
 148                              le16_to_cpu(palive2->status), palive2->ver_type,
 149                              palive2->ver_subtype, palive2->flags);
 150
 151                 IWL_DEBUG_FW(mvm,
 152                              "UMAC version: Major - 0x%x, Minor - 0x%x\n",
 153                              palive2->umac_major, palive2->umac_minor);
 154         }
 155
 156         return true;
 157 }
 158
 159 static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait,
 160                                   struct iwl_rx_packet *pkt, void *data)
 161 {
 162         struct iwl_phy_db *phy_db = data;
 163
 164         if (pkt->hdr.cmd != CALIB_RES_NOTIF_PHY_DB) {
 165                 WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF);
 166                 return true;
 167         }
 168
 169         WARN_ON(iwl_phy_db_set_section(phy_db, pkt, GFP_ATOMIC));
 170
 171         return false;
 172 }
 173
 174 static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
 175                                          enum iwl_ucode_type ucode_type)
 176 {
 177         struct iwl_notification_wait alive_wait;
 178         struct iwl_mvm_alive_data alive_data;
 179         const struct fw_img *fw;
 180         int ret, i;
 181         enum iwl_ucode_type old_type = mvm->cur_ucode;
 182         static const u8 alive_cmd[] = { MVM_ALIVE };
 183
 184         fw = iwl_get_ucode_image(mvm, ucode_type);
 185         if (WARN_ON(!fw))
 186                 return -EINVAL;
 187         mvm->cur_ucode = ucode_type;
 188         mvm->ucode_loaded = false;
 189
 190         iwl_init_notification_wait(&mvm->notif_wait, &alive_wait,
 191                                    alive_cmd, ARRAY_SIZE(alive_cmd),
 192                                    iwl_alive_fn, &alive_data);
 193
 194         ret = iwl_trans_start_fw(mvm->trans, fw, ucode_type == IWL_UCODE_INIT);
 195         if (ret) {
 196                 mvm->cur_ucode = old_type;
 197                 iwl_remove_notification(&mvm->notif_wait, &alive_wait);
 198                 return ret;
 199         }
 200
 201         /*
 202          * Some things may run in the background now, but we
 203          * just wait for the ALIVE notification here.
 204          */
 205         ret = iwl_wait_notification(&mvm->notif_wait, &alive_wait,
 206                                     MVM_UCODE_ALIVE_TIMEOUT);
 207         if (ret) {
 208                 mvm->cur_ucode = old_type;
 209                 return ret;
 210         }
 211
 212         if (!alive_data.valid) {
 213                 IWL_ERR(mvm, "Loaded ucode is not valid!\n");
 214                 mvm->cur_ucode = old_type;
 215                 return -EIO;
 216         }
 217
 218         iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);
 219
 220         /*
 221          * Note: all the queues are enabled as part of the interface
 222          * initialization, but in firmware restart scenarios they
 223          * could be stopped, so wake them up. In firmware restart,
 224          * mac80211 will have the queues stopped as well until the
 225          * reconfiguration completes. During normal startup, they
 226          * will be empty.
 227          */
 228
 229         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
 230                 if (i < mvm->first_agg_queue && i != IWL_MVM_CMD_QUEUE)
 231                         mvm->queue_to_mac80211[i] = i;
 232                 else
 233                         mvm->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
 234                 atomic_set(&mvm->queue_stop_count[i], 0);
 235         }
 236
 237         mvm->transport_queue_stop = 0;
 238
 239         mvm->ucode_loaded = true;
 240
 241         return 0;
 242 }
 243
 244 static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
 245 {
 246         struct iwl_phy_cfg_cmd phy_cfg_cmd;
 247         enum iwl_ucode_type ucode_type = mvm->cur_ucode;
 248
 249         /* Set parameters */
 250         phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config);
 251         phy_cfg_cmd.calib_control.event_trigger =
 252                 mvm->fw->default_calib[ucode_type].event_trigger;
 253         phy_cfg_cmd.calib_control.flow_trigger =
 254                 mvm->fw->default_calib[ucode_type].flow_trigger;
 255
 256         IWL_DEBUG_INFO(mvm, "Sending Phy CFG command: 0x%x\n",
 257                        phy_cfg_cmd.phy_cfg);
 258
 259         return iwl_mvm_send_cmd_pdu(mvm, PHY_CONFIGURATION_CMD, 0,
 260                                     sizeof(phy_cfg_cmd), &phy_cfg_cmd);
 261 }
 262
 263 int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
 264 {
 265         struct iwl_notification_wait calib_wait;
 266         static const u8 init_complete[] = {
 267                 INIT_COMPLETE_NOTIF,
 268                 CALIB_RES_NOTIF_PHY_DB
 269         };
 270         int ret;
 271
 272         lockdep_assert_held(&mvm->mutex);
 273
 274         if (WARN_ON_ONCE(mvm->init_ucode_complete))
 275                 return 0;
 276
 277         iwl_init_notification_wait(&mvm->notif_wait,
 278                                    &calib_wait,
 279                                    init_complete,
 280                                    ARRAY_SIZE(init_complete),
 281                                    iwl_wait_phy_db_entry,
 282                                    mvm->phy_db);
 283
 284         /* Will also start the device */
 285         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_INIT);
 286         if (ret) {
 287                 IWL_ERR(mvm, "Failed to start INIT ucode: %d\n", ret);
 288                 goto error;
 289         }
 290
 291         ret = iwl_send_bt_init_conf(mvm);
 292         if (ret)
 293                 goto error;
 294
 295         /* Read the NVM only at driver load time, no need to do this twice */
 296         if (read_nvm) {
 297                 /* Read nvm */
 298                 ret = iwl_nvm_init(mvm, true);
 299                 if (ret) {
 300                         IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
 301                         goto error;
 302                 }
 303         }
 304
 305         /* In case we read the NVM from external file, load it to the NIC */
 306         if (mvm->nvm_file_name)
 307                 iwl_mvm_load_nvm_to_nic(mvm);
 308
 309         ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans);
 310         WARN_ON(ret);
 311
 312         /*
 313          * abort after reading the nvm in case RF Kill is on, we will complete
 314          * the init seq later when RF kill will switch to off
 315          */
 316         if (iwl_mvm_is_radio_killed(mvm)) {
 317                 IWL_DEBUG_RF_KILL(mvm,
 318                                   "jump over all phy activities due to RF kill\n");
 319                 iwl_remove_notification(&mvm->notif_wait, &calib_wait);
 320                 ret = 1;
 321                 goto out;
 322         }
 323
 324         /* Send TX valid antennas before triggering calibrations */
 325         ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
 326         if (ret)
 327                 goto error;
 328
 329         /*
 330          * Send phy configurations command to init uCode
 331          * to start the 16.0 uCode init image internal calibrations.
 332          */
 333         ret = iwl_send_phy_cfg_cmd(mvm);
 334         if (ret) {
 335                 IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
 336                         ret);
 337                 goto error;
 338         }
 339
 340         /*
 341          * Some things may run in the background now, but we
 342          * just wait for the calibration complete notification.
 343          */
 344         ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
 345                         MVM_UCODE_CALIB_TIMEOUT);
 346         if (!ret)
 347                 mvm->init_ucode_complete = true;
 348         goto out;
 349
 350 error:
 351         iwl_remove_notification(&mvm->notif_wait, &calib_wait);
 352 out:
 353         if (iwlmvm_mod_params.init_dbg && !mvm->nvm_data) {
 354                 /* we want to debug INIT and we have no NVM - fake */
 355                 mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) +
 356                                         sizeof(struct ieee80211_channel) +
 357                                         sizeof(struct ieee80211_rate),
 358                                         GFP_KERNEL);
 359                 if (!mvm->nvm_data)
 360                         return -ENOMEM;
 361                 mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
 362                 mvm->nvm_data->bands[0].n_channels = 1;
 363                 mvm->nvm_data->bands[0].n_bitrates = 1;
 364                 mvm->nvm_data->bands[0].bitrates =
 365                         (void *)mvm->nvm_data->channels + 1;
 366                 mvm->nvm_data->bands[0].bitrates->hw_value = 10;
 367         }
 368
 369         return ret;
 370 }
 371
 372 int iwl_mvm_up(struct iwl_mvm *mvm)
 373 {
 374         int ret, i;
 375         struct ieee80211_channel *chan;
 376         struct cfg80211_chan_def chandef;
 377
 378         lockdep_assert_held(&mvm->mutex);
 379
 380         ret = iwl_trans_start_hw(mvm->trans);
 381         if (ret)
 382                 return ret;
 383
 384         /*
 385          * If we haven't completed the run of the init ucode during
 386          * module loading, load init ucode now
 387          * (for example, if we were in RFKILL)
 388          */
 389         if (!mvm->init_ucode_complete) {
 390                 ret = iwl_run_init_mvm_ucode(mvm, false);
 391                 if (ret && !iwlmvm_mod_params.init_dbg) {
 392                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
 393                         /* this can't happen */
 394                         if (WARN_ON(ret > 0))
 395                                 ret = -ERFKILL;
 396                         goto error;
 397                 }
 398                 if (!iwlmvm_mod_params.init_dbg) {
 399                         /*
 400                          * should stop and start HW since that INIT
 401                          * image just loaded
 402                          */
 403                         iwl_trans_stop_device(mvm->trans);
 404                         ret = iwl_trans_start_hw(mvm->trans);
 405                         if (ret)
 406                                 return ret;
 407                 }
 408         }
 409
 410         if (iwlmvm_mod_params.init_dbg)
 411                 return 0;
 412
 413         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
 414         if (ret) {
 415                 IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
 416                 goto error;
 417         }
 418
 419         ret = iwl_mvm_sf_update(mvm, NULL, false);
 420         if (ret)
 421                 IWL_ERR(mvm, "Failed to initialize Smart Fifo\n");
 422
 423         ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
 424         if (ret)
 425                 goto error;
 426
 427         ret = iwl_send_bt_init_conf(mvm);
 428         if (ret)
 429                 goto error;
 430
 431         /* Send phy db control command and then phy db calibration*/
 432         ret = iwl_send_phy_db_data(mvm->phy_db);
 433         if (ret)
 434                 goto error;
 435
 436         ret = iwl_send_phy_cfg_cmd(mvm);
 437         if (ret)
 438                 goto error;
 439
 440         /* init the fw <-> mac80211 STA mapping */
 441         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
 442                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 443
 444         /* Add auxiliary station for scanning */
 445         ret = iwl_mvm_add_aux_sta(mvm);
 446         if (ret)
 447                 goto error;
 448
 449         /* Add all the PHY contexts */
 450         chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
 451         cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
 452         for (i = 0; i < NUM_PHY_CTX; i++) {
 453                 /*
 454                  * The channel used here isn't relevant as it's
 455                  * going to be overwritten in the other flows.
 456                  * For now use the first channel we have.
 457                  */
 458                 ret = iwl_mvm_phy_ctxt_add(mvm, &mvm->phy_ctxts[i],
 459                                            &chandef, 1, 1);
 460                 if (ret)
 461                         goto error;
 462         }
 463
 464         /* Initialize tx backoffs to the minimal possible */
 465         iwl_mvm_tt_tx_backoff(mvm, 0);
 466
 467         ret = iwl_mvm_power_update_device(mvm);
 468         if (ret)
 469                 goto error;
 470
 471         /* allow FW/transport low power modes if not during restart */
 472         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 473                 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 474
 475         IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
 476         return 0;
 477  error:
 478         iwl_trans_stop_device(mvm->trans);
 479         return ret;
 480 }
 481
 482 int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
 483 {
 484         int ret, i;
 485
 486         lockdep_assert_held(&mvm->mutex);
 487
 488         ret = iwl_trans_start_hw(mvm->trans);
 489         if (ret)
 490                 return ret;
 491
 492         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_WOWLAN);
 493         if (ret) {
 494                 IWL_ERR(mvm, "Failed to start WoWLAN firmware: %d\n", ret);
 495                 goto error;
 496         }
 497
 498         ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
 499         if (ret)
 500                 goto error;
 501
 502         /* Send phy db control command and then phy db calibration*/
 503         ret = iwl_send_phy_db_data(mvm->phy_db);
 504         if (ret)
 505                 goto error;
 506
 507         ret = iwl_send_phy_cfg_cmd(mvm);
 508         if (ret)
 509                 goto error;
 510
 511         /* init the fw <-> mac80211 STA mapping */
 512         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
 513                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 514
 515         /* Add auxiliary station for scanning */
 516         ret = iwl_mvm_add_aux_sta(mvm);
 517         if (ret)
 518                 goto error;
 519
 520         return 0;
 521  error:
 522         iwl_trans_stop_device(mvm->trans);
 523         return ret;
 524 }
 525
 526 int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
 527                                     struct iwl_rx_cmd_buffer *rxb,
 528                                     struct iwl_device_cmd *cmd)
 529 {
 530         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 531         struct iwl_card_state_notif *card_state_notif = (void *)pkt->data;
 532         u32 flags = le32_to_cpu(card_state_notif->flags);
 533
 534         IWL_DEBUG_RF_KILL(mvm, "Card state received: HW:%s SW:%s CT:%s\n",
 535                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 536                           (flags & SW_CARD_DISABLED) ? "Kill" : "On",
 537                           (flags & CT_KILL_CARD_DISABLED) ?
 538                           "Reached" : "Not reached");
 539
 540         return 0;
 541 }
 542
 543 int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 544                          struct iwl_device_cmd *cmd)
 545 {
 546         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 547         struct iwl_radio_version_notif *radio_version = (void *)pkt->data;
 548
 549         /* TODO: what to do with that? */
 550         IWL_DEBUG_INFO(mvm,
 551                        "Radio version: flavor: 0x%08x, step 0x%08x, dash 0x%08x\n",
 552                        le32_to_cpu(radio_version->radio_flavor),
 553                        le32_to_cpu(radio_version->radio_step),
 554                        le32_to_cpu(radio_version->radio_dash));
 555         return 0;
 556 }