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 - 2013 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  *
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  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 - 2013 Intel Corporation. All rights reserved.
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  37  * modification, are permitted provided that the following conditions
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  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
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  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
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  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         mvm->cur_ucode = ucode_type;
 155         fw = iwl_get_ucode_image(mvm, ucode_type);
 156
 157         mvm->ucode_loaded = false;
 158
 159         if (!fw)
 160                 return -EINVAL;
 161
 162         iwl_init_notification_wait(&mvm->notif_wait, &alive_wait,
 163                                    alive_cmd, ARRAY_SIZE(alive_cmd),
 164                                    iwl_alive_fn, &alive_data);
 165
 166         ret = iwl_trans_start_fw(mvm->trans, fw, ucode_type == IWL_UCODE_INIT);
 167         if (ret) {
 168                 mvm->cur_ucode = old_type;
 169                 iwl_remove_notification(&mvm->notif_wait, &alive_wait);
 170                 return ret;
 171         }
 172
 173         /*
 174          * Some things may run in the background now, but we
 175          * just wait for the ALIVE notification here.
 176          */
 177         ret = iwl_wait_notification(&mvm->notif_wait, &alive_wait,
 178                                     MVM_UCODE_ALIVE_TIMEOUT);
 179         if (ret) {
 180                 mvm->cur_ucode = old_type;
 181                 return ret;
 182         }
 183
 184         if (!alive_data.valid) {
 185                 IWL_ERR(mvm, "Loaded ucode is not valid!\n");
 186                 mvm->cur_ucode = old_type;
 187                 return -EIO;
 188         }
 189
 190         iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);
 191
 192         /*
 193          * Note: all the queues are enabled as part of the interface
 194          * initialization, but in firmware restart scenarios they
 195          * could be stopped, so wake them up. In firmware restart,
 196          * mac80211 will have the queues stopped as well until the
 197          * reconfiguration completes. During normal startup, they
 198          * will be empty.
 199          */
 200
 201         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
 202                 if (i < IWL_MVM_FIRST_AGG_QUEUE && i != IWL_MVM_CMD_QUEUE)
 203                         mvm->queue_to_mac80211[i] = i;
 204                 else
 205                         mvm->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
 206                 atomic_set(&mvm->queue_stop_count[i], 0);
 207         }
 208
 209         mvm->transport_queue_stop = 0;
 210
 211         mvm->ucode_loaded = true;
 212
 213         return 0;
 214 }
 215
 216 static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
 217 {
 218         struct iwl_phy_cfg_cmd phy_cfg_cmd;
 219         enum iwl_ucode_type ucode_type = mvm->cur_ucode;
 220
 221         /* Set parameters */
 222         phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config);
 223         phy_cfg_cmd.calib_control.event_trigger =
 224                 mvm->fw->default_calib[ucode_type].event_trigger;
 225         phy_cfg_cmd.calib_control.flow_trigger =
 226                 mvm->fw->default_calib[ucode_type].flow_trigger;
 227
 228         IWL_DEBUG_INFO(mvm, "Sending Phy CFG command: 0x%x\n",
 229                        phy_cfg_cmd.phy_cfg);
 230
 231         return iwl_mvm_send_cmd_pdu(mvm, PHY_CONFIGURATION_CMD, CMD_SYNC,
 232                                     sizeof(phy_cfg_cmd), &phy_cfg_cmd);
 233 }
 234
 235 int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
 236 {
 237         struct iwl_notification_wait calib_wait;
 238         static const u8 init_complete[] = {
 239                 INIT_COMPLETE_NOTIF,
 240                 CALIB_RES_NOTIF_PHY_DB
 241         };
 242         int ret;
 243
 244         lockdep_assert_held(&mvm->mutex);
 245
 246         if (mvm->init_ucode_run)
 247                 return 0;
 248
 249         iwl_init_notification_wait(&mvm->notif_wait,
 250                                    &calib_wait,
 251                                    init_complete,
 252                                    ARRAY_SIZE(init_complete),
 253                                    iwl_wait_phy_db_entry,
 254                                    mvm->phy_db);
 255
 256         /* Will also start the device */
 257         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_INIT);
 258         if (ret) {
 259                 IWL_ERR(mvm, "Failed to start INIT ucode: %d\n", ret);
 260                 goto error;
 261         }
 262
 263         ret = iwl_send_bt_prio_tbl(mvm);
 264         if (ret)
 265                 goto error;
 266
 267         if (read_nvm) {
 268                 /* Read nvm */
 269                 ret = iwl_nvm_init(mvm);
 270                 if (ret) {
 271                         IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
 272                         goto error;
 273                 }
 274         }
 275
 276         ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans);
 277         WARN_ON(ret);
 278
 279         /*
 280          * abort after reading the nvm in case RF Kill is on, we will complete
 281          * the init seq later when RF kill will switch to off
 282          */
 283         if (iwl_mvm_is_radio_killed(mvm)) {
 284                 IWL_DEBUG_RF_KILL(mvm,
 285                                   "jump over all phy activities due to RF kill\n");
 286                 iwl_remove_notification(&mvm->notif_wait, &calib_wait);
 287                 return 1;
 288         }
 289
 290         /* Send TX valid antennas before triggering calibrations */
 291         ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
 292         if (ret)
 293                 goto error;
 294
 295         /*
 296          * Send phy configurations command to init uCode
 297          * to start the 16.0 uCode init image internal calibrations.
 298          */
 299         ret = iwl_send_phy_cfg_cmd(mvm);
 300         if (ret) {
 301                 IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
 302                         ret);
 303                 goto error;
 304         }
 305
 306         /*
 307          * Some things may run in the background now, but we
 308          * just wait for the calibration complete notification.
 309          */
 310         ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
 311                         MVM_UCODE_CALIB_TIMEOUT);
 312         if (!ret)
 313                 mvm->init_ucode_run = true;
 314         goto out;
 315
 316 error:
 317         iwl_remove_notification(&mvm->notif_wait, &calib_wait);
 318 out:
 319         if (!iwlmvm_mod_params.init_dbg) {
 320                 iwl_trans_stop_device(mvm->trans);
 321         } else if (!mvm->nvm_data) {
 322                 /* we want to debug INIT and we have no NVM - fake */
 323                 mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) +
 324                                         sizeof(struct ieee80211_channel) +
 325                                         sizeof(struct ieee80211_rate),
 326                                         GFP_KERNEL);
 327                 if (!mvm->nvm_data)
 328                         return -ENOMEM;
 329                 mvm->nvm_data->valid_rx_ant = 1;
 330                 mvm->nvm_data->valid_tx_ant = 1;
 331                 mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
 332                 mvm->nvm_data->bands[0].n_channels = 1;
 333                 mvm->nvm_data->bands[0].n_bitrates = 1;
 334                 mvm->nvm_data->bands[0].bitrates =
 335                         (void *)mvm->nvm_data->channels + 1;
 336                 mvm->nvm_data->bands[0].bitrates->hw_value = 10;
 337         }
 338
 339         return ret;
 340 }
 341
 342 #define UCODE_CALIB_TIMEOUT     (2*HZ)
 343
 344 int iwl_mvm_up(struct iwl_mvm *mvm)
 345 {
 346         int ret, i;
 347         struct ieee80211_channel *chan;
 348         struct cfg80211_chan_def chandef;
 349
 350         lockdep_assert_held(&mvm->mutex);
 351
 352         ret = iwl_trans_start_hw(mvm->trans);
 353         if (ret)
 354                 return ret;
 355
 356         /* If we were in RFKILL during module loading, load init ucode now */
 357         if (!mvm->init_ucode_run) {
 358                 ret = iwl_run_init_mvm_ucode(mvm, false);
 359                 if (ret && !iwlmvm_mod_params.init_dbg) {
 360                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
 361                         /* this can't happen */
 362                         if (WARN_ON(ret > 0))
 363                                 ret = -ERFKILL;
 364                         goto error;
 365                 }
 366                 /* should stop & start HW since that INIT image just loaded */
 367                 iwl_trans_stop_hw(mvm->trans, false);
 368                 ret = iwl_trans_start_hw(mvm->trans);
 369                 if (ret)
 370                         return ret;
 371         }
 372
 373         if (iwlmvm_mod_params.init_dbg)
 374                 return 0;
 375
 376         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
 377         if (ret) {
 378                 IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
 379                 goto error;
 380         }
 381
 382         ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
 383         if (ret)
 384                 goto error;
 385
 386         ret = iwl_send_bt_prio_tbl(mvm);
 387         if (ret)
 388                 goto error;
 389
 390         ret = iwl_send_bt_init_conf(mvm);
 391         if (ret)
 392                 goto error;
 393
 394         /* Send phy db control command and then phy db calibration*/
 395         ret = iwl_send_phy_db_data(mvm->phy_db);
 396         if (ret)
 397                 goto error;
 398
 399         ret = iwl_send_phy_cfg_cmd(mvm);
 400         if (ret)
 401                 goto error;
 402
 403         /* init the fw <-> mac80211 STA mapping */
 404         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
 405                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 406
 407         /* Add auxiliary station for scanning */
 408         ret = iwl_mvm_add_aux_sta(mvm);
 409         if (ret)
 410                 goto error;
 411
 412         /* Add all the PHY contexts */
 413         chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
 414         cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
 415         for (i = 0; i < NUM_PHY_CTX; i++) {
 416                 /*
 417                  * The channel used here isn't relevant as it's
 418                  * going to be overwritten in the other flows.
 419                  * For now use the first channel we have.
 420                  */
 421                 ret = iwl_mvm_phy_ctxt_add(mvm, &mvm->phy_ctxts[i],
 422                                            &chandef, 1, 1);
 423                 if (ret)
 424                         goto error;
 425         }
 426
 427         IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
 428         return 0;
 429  error:
 430         iwl_trans_stop_device(mvm->trans);
 431         return ret;
 432 }
 433
 434 int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
 435 {
 436         int ret, i;
 437
 438         lockdep_assert_held(&mvm->mutex);
 439
 440         ret = iwl_trans_start_hw(mvm->trans);
 441         if (ret)
 442                 return ret;
 443
 444         ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_WOWLAN);
 445         if (ret) {
 446                 IWL_ERR(mvm, "Failed to start WoWLAN firmware: %d\n", ret);
 447                 goto error;
 448         }
 449
 450         ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
 451         if (ret)
 452                 goto error;
 453
 454         /* Send phy db control command and then phy db calibration*/
 455         ret = iwl_send_phy_db_data(mvm->phy_db);
 456         if (ret)
 457                 goto error;
 458
 459         ret = iwl_send_phy_cfg_cmd(mvm);
 460         if (ret)
 461                 goto error;
 462
 463         /* init the fw <-> mac80211 STA mapping */
 464         for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
 465                 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
 466
 467         /* Add auxiliary station for scanning */
 468         ret = iwl_mvm_add_aux_sta(mvm);
 469         if (ret)
 470                 goto error;
 471
 472         return 0;
 473  error:
 474         iwl_trans_stop_device(mvm->trans);
 475         return ret;
 476 }
 477
 478 int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
 479                                     struct iwl_rx_cmd_buffer *rxb,
 480                                     struct iwl_device_cmd *cmd)
 481 {
 482         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 483         struct iwl_card_state_notif *card_state_notif = (void *)pkt->data;
 484         u32 flags = le32_to_cpu(card_state_notif->flags);
 485
 486         IWL_DEBUG_RF_KILL(mvm, "Card state received: HW:%s SW:%s CT:%s\n",
 487                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 488                           (flags & SW_CARD_DISABLED) ? "Kill" : "On",
 489                           (flags & CT_KILL_CARD_DISABLED) ?
 490                           "Reached" : "Not reached");
 491
 492         return 0;
 493 }
 494
 495 int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 496                          struct iwl_device_cmd *cmd)
 497 {
 498         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 499         struct iwl_radio_version_notif *radio_version = (void *)pkt->data;
 500
 501         /* TODO: what to do with that? */
 502         IWL_DEBUG_INFO(mvm,
 503                        "Radio version: flavor: 0x%08x, step 0x%08x, dash 0x%08x\n",
 504                        le32_to_cpu(radio_version->radio_flavor),
 505                        le32_to_cpu(radio_version->radio_step),
 506                        le32_to_cpu(radio_version->radio_dash));
 507         return 0;
 508 }