drivers/net/wireless/iwlwifi/iwl-ucode.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19  * USA
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called LICENSE.GPL.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/init.h>
  32 #include <linux/sched.h>
  33
  34 #include "iwl-wifi.h"
  35 #include "iwl-dev.h"
  36 #include "iwl-core.h"
  37 #include "iwl-io.h"
  38 #include "iwl-agn-hw.h"
  39 #include "iwl-agn.h"
  40 #include "iwl-agn-calib.h"
  41 #include "iwl-trans.h"
  42 #include "iwl-fh.h"
  43 #include "iwl-op-mode.h"
  44
  45 static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
  46         {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
  47          0, COEX_UNASSOC_IDLE_FLAGS},
  48         {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
  49          0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
  50         {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
  51          0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
  52         {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
  53          0, COEX_CALIBRATION_FLAGS},
  54         {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
  55          0, COEX_PERIODIC_CALIBRATION_FLAGS},
  56         {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
  57          0, COEX_CONNECTION_ESTAB_FLAGS},
  58         {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
  59          0, COEX_ASSOCIATED_IDLE_FLAGS},
  60         {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
  61          0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
  62         {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
  63          0, COEX_ASSOC_AUTO_SCAN_FLAGS},
  64         {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
  65          0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
  66         {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
  67         {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
  68         {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
  69          0, COEX_STAND_ALONE_DEBUG_FLAGS},
  70         {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
  71          0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
  72         {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
  73         {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
  74 };
  75
  76 /******************************************************************************
  77  *
  78  * uCode download functions
  79  *
  80  ******************************************************************************/
  81
  82 static inline const struct fw_img *
  83 iwl_get_ucode_image(struct iwl_priv *priv, enum iwl_ucode_type ucode_type)
  84 {
  85         switch (ucode_type) {
  86         case IWL_UCODE_INIT:
  87                 return &priv->fw->ucode_init;
  88         case IWL_UCODE_WOWLAN:
  89                 return &priv->fw->ucode_wowlan;
  90         case IWL_UCODE_REGULAR:
  91                 return &priv->fw->ucode_rt;
  92         case IWL_UCODE_NONE:
  93                 break;
  94         }
  95         return NULL;
  96 }
  97
  98 /*
  99  *  Calibration
 100  */
 101 static int iwl_set_Xtal_calib(struct iwl_priv *priv)
 102 {
 103         struct iwl_calib_xtal_freq_cmd cmd;
 104         __le16 *xtal_calib =
 105                 (__le16 *)iwl_eeprom_query_addr(priv->shrd, EEPROM_XTAL);
 106
 107         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD);
 108         cmd.cap_pin1 = le16_to_cpu(xtal_calib[0]);
 109         cmd.cap_pin2 = le16_to_cpu(xtal_calib[1]);
 110         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
 111 }
 112
 113 static int iwl_set_temperature_offset_calib(struct iwl_priv *priv)
 114 {
 115         struct iwl_calib_temperature_offset_cmd cmd;
 116         __le16 *offset_calib =
 117                 (__le16 *)iwl_eeprom_query_addr(priv->shrd,
 118                                                 EEPROM_RAW_TEMPERATURE);
 119
 120         memset(&cmd, 0, sizeof(cmd));
 121         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
 122         memcpy(&cmd.radio_sensor_offset, offset_calib, sizeof(*offset_calib));
 123         if (!(cmd.radio_sensor_offset))
 124                 cmd.radio_sensor_offset = DEFAULT_RADIO_SENSOR_OFFSET;
 125
 126         IWL_DEBUG_CALIB(priv, "Radio sensor offset: %d\n",
 127                         le16_to_cpu(cmd.radio_sensor_offset));
 128         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
 129 }
 130
 131 static int iwl_set_temperature_offset_calib_v2(struct iwl_priv *priv)
 132 {
 133         struct iwl_calib_temperature_offset_v2_cmd cmd;
 134         __le16 *offset_calib_high = (__le16 *)iwl_eeprom_query_addr(priv->shrd,
 135                                      EEPROM_KELVIN_TEMPERATURE);
 136         __le16 *offset_calib_low =
 137                 (__le16 *)iwl_eeprom_query_addr(priv->shrd,
 138                                                 EEPROM_RAW_TEMPERATURE);
 139         struct iwl_eeprom_calib_hdr *hdr;
 140
 141         memset(&cmd, 0, sizeof(cmd));
 142         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
 143         hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv->shrd,
 144                                                         EEPROM_CALIB_ALL);
 145         memcpy(&cmd.radio_sensor_offset_high, offset_calib_high,
 146                 sizeof(*offset_calib_high));
 147         memcpy(&cmd.radio_sensor_offset_low, offset_calib_low,
 148                 sizeof(*offset_calib_low));
 149         if (!(cmd.radio_sensor_offset_low)) {
 150                 IWL_DEBUG_CALIB(priv, "no info in EEPROM, use default\n");
 151                 cmd.radio_sensor_offset_low = DEFAULT_RADIO_SENSOR_OFFSET;
 152                 cmd.radio_sensor_offset_high = DEFAULT_RADIO_SENSOR_OFFSET;
 153         }
 154         memcpy(&cmd.burntVoltageRef, &hdr->voltage,
 155                 sizeof(hdr->voltage));
 156
 157         IWL_DEBUG_CALIB(priv, "Radio sensor offset high: %d\n",
 158                         le16_to_cpu(cmd.radio_sensor_offset_high));
 159         IWL_DEBUG_CALIB(priv, "Radio sensor offset low: %d\n",
 160                         le16_to_cpu(cmd.radio_sensor_offset_low));
 161         IWL_DEBUG_CALIB(priv, "Voltage Ref: %d\n",
 162                         le16_to_cpu(cmd.burntVoltageRef));
 163
 164         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
 165 }
 166
 167 static int iwl_send_calib_cfg(struct iwl_priv *priv)
 168 {
 169         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 170         struct iwl_host_cmd cmd = {
 171                 .id = CALIBRATION_CFG_CMD,
 172                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 173                 .data = { &calib_cfg_cmd, },
 174         };
 175
 176         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 177         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
 178         calib_cfg_cmd.ucd_calib_cfg.once.start = IWL_CALIB_INIT_CFG_ALL;
 179         calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
 180         calib_cfg_cmd.ucd_calib_cfg.flags =
 181                 IWL_CALIB_CFG_FLAG_SEND_COMPLETE_NTFY_MSK;
 182
 183         return iwl_trans_send_cmd(trans(priv), &cmd);
 184 }
 185
 186 int iwlagn_rx_calib_result(struct iwl_priv *priv,
 187                             struct iwl_rx_cmd_buffer *rxb,
 188                             struct iwl_device_cmd *cmd)
 189 {
 190         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 191         struct iwl_calib_hdr *hdr = (struct iwl_calib_hdr *)pkt->u.raw;
 192         int len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
 193
 194         /* reduce the size of the length field itself */
 195         len -= 4;
 196
 197         if (iwl_calib_set(priv, hdr, len))
 198                 IWL_ERR(priv, "Failed to record calibration data %d\n",
 199                         hdr->op_code);
 200
 201         return 0;
 202 }
 203
 204 int iwl_init_alive_start(struct iwl_priv *priv)
 205 {
 206         int ret;
 207
 208         if (cfg(priv)->bt_params &&
 209             cfg(priv)->bt_params->advanced_bt_coexist) {
 210                 /*
 211                  * Tell uCode we are ready to perform calibration
 212                  * need to perform this before any calibration
 213                  * no need to close the envlope since we are going
 214                  * to load the runtime uCode later.
 215                  */
 216                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 217                         BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 218                 if (ret)
 219                         return ret;
 220
 221         }
 222
 223         ret = iwl_send_calib_cfg(priv);
 224         if (ret)
 225                 return ret;
 226
 227         /**
 228          * temperature offset calibration is only needed for runtime ucode,
 229          * so prepare the value now.
 230          */
 231         if (cfg(priv)->need_temp_offset_calib) {
 232                 if (cfg(priv)->temp_offset_v2)
 233                         return iwl_set_temperature_offset_calib_v2(priv);
 234                 else
 235                         return iwl_set_temperature_offset_calib(priv);
 236         }
 237
 238         return 0;
 239 }
 240
 241 static int iwl_send_wimax_coex(struct iwl_priv *priv)
 242 {
 243         struct iwl_wimax_coex_cmd coex_cmd;
 244
 245         if (cfg(priv)->base_params->support_wimax_coexist) {
 246                 /* UnMask wake up src at associated sleep */
 247                 coex_cmd.flags = COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
 248
 249                 /* UnMask wake up src at unassociated sleep */
 250                 coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
 251                 memcpy(coex_cmd.sta_prio, cu_priorities,
 252                         sizeof(struct iwl_wimax_coex_event_entry) *
 253                          COEX_NUM_OF_EVENTS);
 254
 255                 /* enabling the coexistence feature */
 256                 coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
 257
 258                 /* enabling the priorities tables */
 259                 coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
 260         } else {
 261                 /* coexistence is disabled */
 262                 memset(&coex_cmd, 0, sizeof(coex_cmd));
 263         }
 264         return iwl_trans_send_cmd_pdu(trans(priv),
 265                                 COEX_PRIORITY_TABLE_CMD, CMD_SYNC,
 266                                 sizeof(coex_cmd), &coex_cmd);
 267 }
 268
 269 static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
 270         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 271                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 272         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 273                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 274         ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 275                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 276         ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 277                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 278         ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 279                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 280         ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 281                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 282         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 283                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 284         ((BT_COEX_PRIO_TBL_PRIO_COEX_OFF << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 285                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 286         ((BT_COEX_PRIO_TBL_PRIO_COEX_ON << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 287                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 288         0, 0, 0, 0, 0, 0, 0
 289 };
 290
 291 void iwl_send_prio_tbl(struct iwl_priv *priv)
 292 {
 293         struct iwl_bt_coex_prio_table_cmd prio_tbl_cmd;
 294
 295         memcpy(prio_tbl_cmd.prio_tbl, iwl_bt_prio_tbl,
 296                 sizeof(iwl_bt_prio_tbl));
 297         if (iwl_trans_send_cmd_pdu(trans(priv),
 298                                 REPLY_BT_COEX_PRIO_TABLE, CMD_SYNC,
 299                                 sizeof(prio_tbl_cmd), &prio_tbl_cmd))
 300                 IWL_ERR(priv, "failed to send BT prio tbl command\n");
 301 }
 302
 303 int iwl_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
 304 {
 305         struct iwl_bt_coex_prot_env_cmd env_cmd;
 306         int ret;
 307
 308         env_cmd.action = action;
 309         env_cmd.type = type;
 310         ret = iwl_trans_send_cmd_pdu(trans(priv),
 311                                REPLY_BT_COEX_PROT_ENV, CMD_SYNC,
 312                                sizeof(env_cmd), &env_cmd);
 313         if (ret)
 314                 IWL_ERR(priv, "failed to send BT env command\n");
 315         return ret;
 316 }
 317
 318
 319 static int iwl_alive_notify(struct iwl_priv *priv)
 320 {
 321         struct iwl_rxon_context *ctx;
 322         int ret;
 323
 324         if (!priv->tx_cmd_pool)
 325                 priv->tx_cmd_pool =
 326                         kmem_cache_create("iwl_dev_cmd",
 327                                           sizeof(struct iwl_device_cmd),
 328                                           sizeof(void *), 0, NULL);
 329
 330         if (!priv->tx_cmd_pool)
 331                 return -ENOMEM;
 332
 333         iwl_trans_fw_alive(trans(priv));
 334         for_each_context(priv, ctx)
 335                 ctx->last_tx_rejected = false;
 336
 337         ret = iwl_send_wimax_coex(priv);
 338         if (ret)
 339                 return ret;
 340
 341         if (!cfg(priv)->no_xtal_calib) {
 342                 ret = iwl_set_Xtal_calib(priv);
 343                 if (ret)
 344                         return ret;
 345         }
 346
 347         return iwl_send_calib_results(priv);
 348 }
 349
 350
 351 /**
 352  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
 353  *   using sample data 100 bytes apart.  If these sample points are good,
 354  *   it's a pretty good bet that everything between them is good, too.
 355  */
 356 static int iwl_verify_inst_sparse(struct iwl_priv *priv,
 357                                   const struct fw_desc *fw_desc)
 358 {
 359         __le32 *image = (__le32 *)fw_desc->v_addr;
 360         u32 len = fw_desc->len;
 361         u32 val;
 362         u32 i;
 363
 364         IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
 365
 366         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
 367                 /* read data comes through single port, auto-incr addr */
 368                 /* NOTE: Use the debugless read so we don't flood kernel log
 369                  * if IWL_DL_IO is set */
 370                 iwl_write_direct32(trans(priv), HBUS_TARG_MEM_RADDR,
 371                         i + IWLAGN_RTC_INST_LOWER_BOUND);
 372                 val = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 373                 if (val != le32_to_cpu(*image))
 374                         return -EIO;
 375         }
 376
 377         return 0;
 378 }
 379
 380 static void iwl_print_mismatch_inst(struct iwl_priv *priv,
 381                                     const struct fw_desc *fw_desc)
 382 {
 383         __le32 *image = (__le32 *)fw_desc->v_addr;
 384         u32 len = fw_desc->len;
 385         u32 val;
 386         u32 offs;
 387         int errors = 0;
 388
 389         IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
 390
 391         iwl_write_direct32(trans(priv), HBUS_TARG_MEM_RADDR,
 392                            IWLAGN_RTC_INST_LOWER_BOUND);
 393
 394         for (offs = 0;
 395              offs < len && errors < 20;
 396              offs += sizeof(u32), image++) {
 397                 /* read data comes through single port, auto-incr addr */
 398                 val = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 399                 if (val != le32_to_cpu(*image)) {
 400                         IWL_ERR(priv, "uCode INST section at "
 401                                 "offset 0x%x, is 0x%x, s/b 0x%x\n",
 402                                 offs, val, le32_to_cpu(*image));
 403                         errors++;
 404                 }
 405         }
 406 }
 407
 408 /**
 409  * iwl_verify_ucode - determine which instruction image is in SRAM,
 410  *    and verify its contents
 411  */
 412 static int iwl_verify_ucode(struct iwl_priv *priv,
 413                             enum iwl_ucode_type ucode_type)
 414 {
 415         const struct fw_img *img = iwl_get_ucode_image(priv, ucode_type);
 416
 417         if (!img) {
 418                 IWL_ERR(priv, "Invalid ucode requested (%d)\n", ucode_type);
 419                 return -EINVAL;
 420         }
 421
 422         if (!iwl_verify_inst_sparse(priv, &img->code)) {
 423                 IWL_DEBUG_FW(priv, "uCode is good in inst SRAM\n");
 424                 return 0;
 425         }
 426
 427         IWL_ERR(priv, "UCODE IMAGE IN INSTRUCTION SRAM NOT VALID!!\n");
 428
 429         iwl_print_mismatch_inst(priv, &img->code);
 430         return -EIO;
 431 }
 432
 433 struct iwl_alive_data {
 434         bool valid;
 435         u8 subtype;
 436 };
 437
 438 static void iwl_alive_fn(struct iwl_priv *priv,
 439                             struct iwl_rx_packet *pkt,
 440                             void *data)
 441 {
 442         struct iwl_alive_data *alive_data = data;
 443         struct iwl_alive_resp *palive;
 444
 445         palive = &pkt->u.alive_frame;
 446
 447         IWL_DEBUG_FW(priv, "Alive ucode status 0x%08X revision "
 448                        "0x%01X 0x%01X\n",
 449                        palive->is_valid, palive->ver_type,
 450                        palive->ver_subtype);
 451
 452         priv->shrd->device_pointers.error_event_table =
 453                 le32_to_cpu(palive->error_event_table_ptr);
 454         priv->shrd->device_pointers.log_event_table =
 455                 le32_to_cpu(palive->log_event_table_ptr);
 456
 457         alive_data->subtype = palive->ver_subtype;
 458         alive_data->valid = palive->is_valid == UCODE_VALID_OK;
 459 }
 460
 461 /* notification wait support */
 462 void iwl_init_notification_wait(struct iwl_shared *shrd,
 463                                 struct iwl_notification_wait *wait_entry,
 464                                 u8 cmd,
 465                                 void (*fn)(struct iwl_priv *priv,
 466                                            struct iwl_rx_packet *pkt,
 467                                            void *data),
 468                                 void *fn_data)
 469 {
 470         wait_entry->fn = fn;
 471         wait_entry->fn_data = fn_data;
 472         wait_entry->cmd = cmd;
 473         wait_entry->triggered = false;
 474         wait_entry->aborted = false;
 475
 476         spin_lock_bh(&shrd->notif_wait_lock);
 477         list_add(&wait_entry->list, &shrd->notif_waits);
 478         spin_unlock_bh(&shrd->notif_wait_lock);
 479 }
 480
 481 int iwl_wait_notification(struct iwl_shared *shrd,
 482                              struct iwl_notification_wait *wait_entry,
 483                              unsigned long timeout)
 484 {
 485         int ret;
 486
 487         ret = wait_event_timeout(shrd->notif_waitq,
 488                                  wait_entry->triggered || wait_entry->aborted,
 489                                  timeout);
 490
 491         spin_lock_bh(&shrd->notif_wait_lock);
 492         list_del(&wait_entry->list);
 493         spin_unlock_bh(&shrd->notif_wait_lock);
 494
 495         if (wait_entry->aborted)
 496                 return -EIO;
 497
 498         /* return value is always >= 0 */
 499         if (ret <= 0)
 500                 return -ETIMEDOUT;
 501         return 0;
 502 }
 503
 504 void iwl_remove_notification(struct iwl_shared *shrd,
 505                                 struct iwl_notification_wait *wait_entry)
 506 {
 507         spin_lock_bh(&shrd->notif_wait_lock);
 508         list_del(&wait_entry->list);
 509         spin_unlock_bh(&shrd->notif_wait_lock);
 510 }
 511
 512 void iwl_abort_notification_waits(struct iwl_shared *shrd)
 513 {
 514         unsigned long flags;
 515         struct iwl_notification_wait *wait_entry;
 516
 517         spin_lock_irqsave(&shrd->notif_wait_lock, flags);
 518         list_for_each_entry(wait_entry, &shrd->notif_waits, list)
 519                 wait_entry->aborted = true;
 520         spin_unlock_irqrestore(&shrd->notif_wait_lock, flags);
 521
 522         wake_up_all(&shrd->notif_waitq);
 523 }
 524
 525 #define UCODE_ALIVE_TIMEOUT     HZ
 526 #define UCODE_CALIB_TIMEOUT     (2*HZ)
 527
 528 int iwl_load_ucode_wait_alive(struct iwl_priv *priv,
 529                                  enum iwl_ucode_type ucode_type)
 530 {
 531         struct iwl_notification_wait alive_wait;
 532         struct iwl_alive_data alive_data;
 533         const struct fw_img *fw;
 534         int ret;
 535         enum iwl_ucode_type old_type;
 536
 537         iwl_init_notification_wait(priv->shrd, &alive_wait, REPLY_ALIVE,
 538                                       iwl_alive_fn, &alive_data);
 539
 540         old_type = priv->shrd->ucode_type;
 541         priv->shrd->ucode_type = ucode_type;
 542         fw = iwl_get_ucode_image(priv, ucode_type);
 543
 544         if (!fw)
 545                 return -EINVAL;
 546
 547         ret = iwl_trans_start_fw(trans(priv), fw);
 548         if (ret) {
 549                 priv->shrd->ucode_type = old_type;
 550                 iwl_remove_notification(priv->shrd, &alive_wait);
 551                 return ret;
 552         }
 553
 554         /*
 555          * Some things may run in the background now, but we
 556          * just wait for the ALIVE notification here.
 557          */
 558         ret = iwl_wait_notification(priv->shrd, &alive_wait,
 559                                         UCODE_ALIVE_TIMEOUT);
 560         if (ret) {
 561                 priv->shrd->ucode_type = old_type;
 562                 return ret;
 563         }
 564
 565         if (!alive_data.valid) {
 566                 IWL_ERR(priv, "Loaded ucode is not valid!\n");
 567                 priv->shrd->ucode_type = old_type;
 568                 return -EIO;
 569         }
 570
 571         /*
 572          * This step takes a long time (60-80ms!!) and
 573          * WoWLAN image should be loaded quickly, so
 574          * skip it for WoWLAN.
 575          */
 576         if (ucode_type != IWL_UCODE_WOWLAN) {
 577                 ret = iwl_verify_ucode(priv, ucode_type);
 578                 if (ret) {
 579                         priv->shrd->ucode_type = old_type;
 580                         return ret;
 581                 }
 582
 583                 /* delay a bit to give rfkill time to run */
 584                 msleep(5);
 585         }
 586
 587         ret = iwl_alive_notify(priv);
 588         if (ret) {
 589                 IWL_WARN(priv,
 590                         "Could not complete ALIVE transition: %d\n", ret);
 591                 priv->shrd->ucode_type = old_type;
 592                 return ret;
 593         }
 594
 595         return 0;
 596 }
 597
 598 int iwl_run_init_ucode(struct iwl_priv *priv)
 599 {
 600         struct iwl_notification_wait calib_wait;
 601         int ret;
 602
 603         lockdep_assert_held(&priv->shrd->mutex);
 604
 605         /* No init ucode required? Curious, but maybe ok */
 606         if (!priv->fw->ucode_init.code.len)
 607                 return 0;
 608
 609         if (priv->shrd->ucode_type != IWL_UCODE_NONE)
 610                 return 0;
 611
 612         iwl_init_notification_wait(priv->shrd, &calib_wait,
 613                                       CALIBRATION_COMPLETE_NOTIFICATION,
 614                                       NULL, NULL);
 615
 616         /* Will also start the device */
 617         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_INIT);
 618         if (ret)
 619                 goto error;
 620
 621         ret = iwl_init_alive_start(priv);
 622         if (ret)
 623                 goto error;
 624
 625         /*
 626          * Some things may run in the background now, but we
 627          * just wait for the calibration complete notification.
 628          */
 629         ret = iwl_wait_notification(priv->shrd, &calib_wait,
 630                                         UCODE_CALIB_TIMEOUT);
 631
 632         goto out;
 633
 634  error:
 635         iwl_remove_notification(priv->shrd, &calib_wait);
 636  out:
 637         /* Whatever happened, stop the device */
 638         iwl_trans_stop_device(trans(priv));
 639         return ret;
 640 }