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