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-ucode.h"
  35 #include "iwl-wifi.h"
  36 #include "iwl-dev.h"
  37 #include "iwl-core.h"
  38 #include "iwl-io.h"
  39 #include "iwl-agn-hw.h"
  40 #include "iwl-agn.h"
  41 #include "iwl-agn-calib.h"
  42 #include "iwl-trans.h"
  43 #include "iwl-fh.h"
  44 #include "iwl-op-mode.h"
  45
  46 static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
  47         {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
  48          0, COEX_UNASSOC_IDLE_FLAGS},
  49         {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
  50          0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
  51         {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
  52          0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
  53         {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
  54          0, COEX_CALIBRATION_FLAGS},
  55         {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
  56          0, COEX_PERIODIC_CALIBRATION_FLAGS},
  57         {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
  58          0, COEX_CONNECTION_ESTAB_FLAGS},
  59         {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
  60          0, COEX_ASSOCIATED_IDLE_FLAGS},
  61         {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
  62          0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
  63         {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
  64          0, COEX_ASSOC_AUTO_SCAN_FLAGS},
  65         {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
  66          0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
  67         {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
  68         {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
  69         {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
  70          0, COEX_STAND_ALONE_DEBUG_FLAGS},
  71         {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
  72          0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
  73         {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
  74         {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
  75 };
  76
  77 /******************************************************************************
  78  *
  79  * uCode download functions
  80  *
  81  ******************************************************************************/
  82
  83 static inline struct fw_img *iwl_get_ucode_image(struct iwl_priv *priv,
  84                                                  enum iwl_ucode_type ucode_type)
  85 {
  86         switch (ucode_type) {
  87         case IWL_UCODE_INIT:
  88                 return &nic(priv)->fw.ucode_init;
  89         case IWL_UCODE_WOWLAN:
  90                 return &nic(priv)->fw.ucode_wowlan;
  91         case IWL_UCODE_REGULAR:
  92                 return &nic(priv)->fw.ucode_rt;
  93         case IWL_UCODE_NONE:
  94                 break;
  95         }
  96         return NULL;
  97 }
  98
  99 /*
 100  *  Calibration
 101  */
 102 static int iwl_set_Xtal_calib(struct iwl_priv *priv)
 103 {
 104         struct iwl_calib_xtal_freq_cmd cmd;
 105         __le16 *xtal_calib =
 106                 (__le16 *)iwl_eeprom_query_addr(priv->shrd, EEPROM_XTAL);
 107
 108         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD);
 109         cmd.cap_pin1 = le16_to_cpu(xtal_calib[0]);
 110         cmd.cap_pin2 = le16_to_cpu(xtal_calib[1]);
 111         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
 112 }
 113
 114 static int iwl_set_temperature_offset_calib(struct iwl_priv *priv)
 115 {
 116         struct iwl_calib_temperature_offset_cmd cmd;
 117         __le16 *offset_calib =
 118                 (__le16 *)iwl_eeprom_query_addr(priv->shrd,
 119                                                 EEPROM_RAW_TEMPERATURE);
 120
 121         memset(&cmd, 0, sizeof(cmd));
 122         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
 123         memcpy(&cmd.radio_sensor_offset, offset_calib, sizeof(*offset_calib));
 124         if (!(cmd.radio_sensor_offset))
 125                 cmd.radio_sensor_offset = DEFAULT_RADIO_SENSOR_OFFSET;
 126
 127         IWL_DEBUG_CALIB(priv, "Radio sensor offset: %d\n",
 128                         le16_to_cpu(cmd.radio_sensor_offset));
 129         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
 130 }
 131
 132 static int iwl_set_temperature_offset_calib_v2(struct iwl_priv *priv)
 133 {
 134         struct iwl_calib_temperature_offset_v2_cmd cmd;
 135         __le16 *offset_calib_high = (__le16 *)iwl_eeprom_query_addr(priv->shrd,
 136                                      EEPROM_KELVIN_TEMPERATURE);
 137         __le16 *offset_calib_low =
 138                 (__le16 *)iwl_eeprom_query_addr(priv->shrd,
 139                                                 EEPROM_RAW_TEMPERATURE);
 140         struct iwl_eeprom_calib_hdr *hdr;
 141
 142         memset(&cmd, 0, sizeof(cmd));
 143         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
 144         hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv->shrd,
 145                                                         EEPROM_CALIB_ALL);
 146         memcpy(&cmd.radio_sensor_offset_high, offset_calib_high,
 147                 sizeof(*offset_calib_high));
 148         memcpy(&cmd.radio_sensor_offset_low, offset_calib_low,
 149                 sizeof(*offset_calib_low));
 150         if (!(cmd.radio_sensor_offset_low)) {
 151                 IWL_DEBUG_CALIB(priv, "no info in EEPROM, use default\n");
 152                 cmd.radio_sensor_offset_low = DEFAULT_RADIO_SENSOR_OFFSET;
 153                 cmd.radio_sensor_offset_high = DEFAULT_RADIO_SENSOR_OFFSET;
 154         }
 155         memcpy(&cmd.burntVoltageRef, &hdr->voltage,
 156                 sizeof(hdr->voltage));
 157
 158         IWL_DEBUG_CALIB(priv, "Radio sensor offset high: %d\n",
 159                         le16_to_cpu(cmd.radio_sensor_offset_high));
 160         IWL_DEBUG_CALIB(priv, "Radio sensor offset low: %d\n",
 161                         le16_to_cpu(cmd.radio_sensor_offset_low));
 162         IWL_DEBUG_CALIB(priv, "Voltage Ref: %d\n",
 163                         le16_to_cpu(cmd.burntVoltageRef));
 164
 165         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
 166 }
 167
 168 static int iwl_send_calib_cfg(struct iwl_priv *priv)
 169 {
 170         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 171         struct iwl_host_cmd cmd = {
 172                 .id = CALIBRATION_CFG_CMD,
 173                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 174                 .data = { &calib_cfg_cmd, },
 175         };
 176
 177         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 178         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
 179         calib_cfg_cmd.ucd_calib_cfg.once.start = IWL_CALIB_INIT_CFG_ALL;
 180         calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
 181         calib_cfg_cmd.ucd_calib_cfg.flags =
 182                 IWL_CALIB_CFG_FLAG_SEND_COMPLETE_NTFY_MSK;
 183
 184         return iwl_trans_send_cmd(trans(priv), &cmd);
 185 }
 186
 187 int iwlagn_rx_calib_result(struct iwl_priv *priv,
 188                             struct iwl_rx_cmd_buffer *rxb,
 189                             struct iwl_device_cmd *cmd)
 190 {
 191         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 192         struct iwl_calib_hdr *hdr = (struct iwl_calib_hdr *)pkt->u.raw;
 193         int len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
 194
 195         /* reduce the size of the length field itself */
 196         len -= 4;
 197
 198         if (iwl_calib_set(priv, hdr, len))
 199                 IWL_ERR(priv, "Failed to record calibration data %d\n",
 200                         hdr->op_code);
 201
 202         return 0;
 203 }
 204
 205 int iwl_init_alive_start(struct iwl_priv *priv)
 206 {
 207         int ret;
 208
 209         if (cfg(priv)->bt_params &&
 210             cfg(priv)->bt_params->advanced_bt_coexist) {
 211                 /*
 212                  * Tell uCode we are ready to perform calibration
 213                  * need to perform this before any calibration
 214                  * no need to close the envlope since we are going
 215                  * to load the runtime uCode later.
 216                  */
 217                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 218                         BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 219                 if (ret)
 220                         return ret;
 221
 222         }
 223
 224         ret = iwl_send_calib_cfg(priv);
 225         if (ret)
 226                 return ret;
 227
 228         /**
 229          * temperature offset calibration is only needed for runtime ucode,
 230          * so prepare the value now.
 231          */
 232         if (cfg(priv)->need_temp_offset_calib) {
 233                 if (cfg(priv)->temp_offset_v2)
 234                         return iwl_set_temperature_offset_calib_v2(priv);
 235                 else
 236                         return iwl_set_temperature_offset_calib(priv);
 237         }
 238
 239         return 0;
 240 }
 241
 242 static int iwl_send_wimax_coex(struct iwl_priv *priv)
 243 {
 244         struct iwl_wimax_coex_cmd coex_cmd;
 245
 246         if (cfg(priv)->base_params->support_wimax_coexist) {
 247                 /* UnMask wake up src at associated sleep */
 248                 coex_cmd.flags = COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
 249
 250                 /* UnMask wake up src at unassociated sleep */
 251                 coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
 252                 memcpy(coex_cmd.sta_prio, cu_priorities,
 253                         sizeof(struct iwl_wimax_coex_event_entry) *
 254                          COEX_NUM_OF_EVENTS);
 255
 256                 /* enabling the coexistence feature */
 257                 coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
 258
 259                 /* enabling the priorities tables */
 260                 coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
 261         } else {
 262                 /* coexistence is disabled */
 263                 memset(&coex_cmd, 0, sizeof(coex_cmd));
 264         }
 265         return iwl_trans_send_cmd_pdu(trans(priv),
 266                                 COEX_PRIORITY_TABLE_CMD, CMD_SYNC,
 267                                 sizeof(coex_cmd), &coex_cmd);
 268 }
 269
 270 static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
 271         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 272                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 273         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 274                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 275         ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 276                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 277         ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 278                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 279         ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 280                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 281         ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 282                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 283         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 284                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 285         ((BT_COEX_PRIO_TBL_PRIO_COEX_OFF << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 286                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 287         ((BT_COEX_PRIO_TBL_PRIO_COEX_ON << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 288                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 289         0, 0, 0, 0, 0, 0, 0
 290 };
 291
 292 void iwl_send_prio_tbl(struct iwl_priv *priv)
 293 {
 294         struct iwl_bt_coex_prio_table_cmd prio_tbl_cmd;
 295
 296         memcpy(prio_tbl_cmd.prio_tbl, iwl_bt_prio_tbl,
 297                 sizeof(iwl_bt_prio_tbl));
 298         if (iwl_trans_send_cmd_pdu(trans(priv),
 299                                 REPLY_BT_COEX_PRIO_TABLE, CMD_SYNC,
 300                                 sizeof(prio_tbl_cmd), &prio_tbl_cmd))
 301                 IWL_ERR(priv, "failed to send BT prio tbl command\n");
 302 }
 303
 304 int iwl_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
 305 {
 306         struct iwl_bt_coex_prot_env_cmd env_cmd;
 307         int ret;
 308
 309         env_cmd.action = action;
 310         env_cmd.type = type;
 311         ret = iwl_trans_send_cmd_pdu(trans(priv),
 312                                REPLY_BT_COEX_PROT_ENV, CMD_SYNC,
 313                                sizeof(env_cmd), &env_cmd);
 314         if (ret)
 315                 IWL_ERR(priv, "failed to send BT env command\n");
 316         return ret;
 317 }
 318
 319
 320 static int iwl_alive_notify(struct iwl_priv *priv)
 321 {
 322         struct iwl_rxon_context *ctx;
 323         int ret;
 324
 325         if (!priv->tx_cmd_pool)
 326                 priv->tx_cmd_pool =
 327                         kmem_cache_create("iwl_dev_cmd",
 328                                           sizeof(struct iwl_device_cmd),
 329                                           sizeof(void *), 0, NULL);
 330
 331         if (!priv->tx_cmd_pool)
 332                 return -ENOMEM;
 333
 334         iwl_trans_fw_alive(trans(priv));
 335         for_each_context(priv, ctx)
 336                 ctx->last_tx_rejected = false;
 337
 338         ret = iwl_send_wimax_coex(priv);
 339         if (ret)
 340                 return ret;
 341
 342         if (!cfg(priv)->no_xtal_calib) {
 343                 ret = iwl_set_Xtal_calib(priv);
 344                 if (ret)
 345                         return ret;
 346         }
 347
 348         return iwl_send_calib_results(priv);
 349 }
 350
 351
 352 /**
 353  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
 354  *   using sample data 100 bytes apart.  If these sample points are good,
 355  *   it's a pretty good bet that everything between them is good, too.
 356  */
 357 static int iwl_verify_inst_sparse(struct iwl_priv *priv,
 358                                   struct fw_desc *fw_desc)
 359 {
 360         __le32 *image = (__le32 *)fw_desc->v_addr;
 361         u32 len = fw_desc->len;
 362         u32 val;
 363         u32 i;
 364
 365         IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
 366
 367         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
 368                 /* read data comes through single port, auto-incr addr */
 369                 /* NOTE: Use the debugless read so we don't flood kernel log
 370                  * if IWL_DL_IO is set */
 371                 iwl_write_direct32(trans(priv), HBUS_TARG_MEM_RADDR,
 372                         i + IWLAGN_RTC_INST_LOWER_BOUND);
 373                 val = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 374                 if (val != le32_to_cpu(*image))
 375                         return -EIO;
 376         }
 377
 378         return 0;
 379 }
 380
 381 static void iwl_print_mismatch_inst(struct iwl_priv *priv,
 382                                     struct fw_desc *fw_desc)
 383 {
 384         __le32 *image = (__le32 *)fw_desc->v_addr;
 385         u32 len = fw_desc->len;
 386         u32 val;
 387         u32 offs;
 388         int errors = 0;
 389
 390         IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
 391
 392         iwl_write_direct32(trans(priv), HBUS_TARG_MEM_RADDR,
 393                            IWLAGN_RTC_INST_LOWER_BOUND);
 394
 395         for (offs = 0;
 396              offs < len && errors < 20;
 397              offs += sizeof(u32), image++) {
 398                 /* read data comes through single port, auto-incr addr */
 399                 val = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 400                 if (val != le32_to_cpu(*image)) {
 401                         IWL_ERR(priv, "uCode INST section at "
 402                                 "offset 0x%x, is 0x%x, s/b 0x%x\n",
 403                                 offs, val, le32_to_cpu(*image));
 404                         errors++;
 405                 }
 406         }
 407 }
 408
 409 /**
 410  * iwl_verify_ucode - determine which instruction image is in SRAM,
 411  *    and verify its contents
 412  */
 413 static int iwl_verify_ucode(struct iwl_priv *priv,
 414                             enum iwl_ucode_type ucode_type)
 415 {
 416         struct fw_img *img = iwl_get_ucode_image(priv, ucode_type);
 417
 418         if (!img) {
 419                 IWL_ERR(priv, "Invalid ucode requested (%d)\n", ucode_type);
 420                 return -EINVAL;
 421         }
 422
 423         if (!iwl_verify_inst_sparse(priv, &img->code)) {
 424                 IWL_DEBUG_FW(priv, "uCode is good in inst SRAM\n");
 425                 return 0;
 426         }
 427
 428         IWL_ERR(priv, "UCODE IMAGE IN INSTRUCTION SRAM NOT VALID!!\n");
 429
 430         iwl_print_mismatch_inst(priv, &img->code);
 431         return -EIO;
 432 }
 433
 434 struct iwl_alive_data {
 435         bool valid;
 436         u8 subtype;
 437 };
 438
 439 static void iwl_alive_fn(struct iwl_priv *priv,
 440                             struct iwl_rx_packet *pkt,
 441                             void *data)
 442 {
 443         struct iwl_alive_data *alive_data = data;
 444         struct iwl_alive_resp *palive;
 445
 446         palive = &pkt->u.alive_frame;
 447
 448         IWL_DEBUG_FW(priv, "Alive ucode status 0x%08X revision "
 449                        "0x%01X 0x%01X\n",
 450                        palive->is_valid, palive->ver_type,
 451                        palive->ver_subtype);
 452
 453         priv->shrd->device_pointers.error_event_table =
 454                 le32_to_cpu(palive->error_event_table_ptr);
 455         priv->shrd->device_pointers.log_event_table =
 456                 le32_to_cpu(palive->log_event_table_ptr);
 457
 458         alive_data->subtype = palive->ver_subtype;
 459         alive_data->valid = palive->is_valid == UCODE_VALID_OK;
 460 }
 461
 462 /* notification wait support */
 463 void iwl_init_notification_wait(struct iwl_shared *shrd,
 464                                 struct iwl_notification_wait *wait_entry,
 465                                 u8 cmd,
 466                                 void (*fn)(struct iwl_priv *priv,
 467                                            struct iwl_rx_packet *pkt,
 468                                            void *data),
 469                                 void *fn_data)
 470 {
 471         wait_entry->fn = fn;
 472         wait_entry->fn_data = fn_data;
 473         wait_entry->cmd = cmd;
 474         wait_entry->triggered = false;
 475         wait_entry->aborted = false;
 476
 477         spin_lock_bh(&shrd->notif_wait_lock);
 478         list_add(&wait_entry->list, &shrd->notif_waits);
 479         spin_unlock_bh(&shrd->notif_wait_lock);
 480 }
 481
 482 int iwl_wait_notification(struct iwl_shared *shrd,
 483                              struct iwl_notification_wait *wait_entry,
 484                              unsigned long timeout)
 485 {
 486         int ret;
 487
 488         ret = wait_event_timeout(shrd->notif_waitq,
 489                                  wait_entry->triggered || wait_entry->aborted,
 490                                  timeout);
 491
 492         spin_lock_bh(&shrd->notif_wait_lock);
 493         list_del(&wait_entry->list);
 494         spin_unlock_bh(&shrd->notif_wait_lock);
 495
 496         if (wait_entry->aborted)
 497                 return -EIO;
 498
 499         /* return value is always >= 0 */
 500         if (ret <= 0)
 501                 return -ETIMEDOUT;
 502         return 0;
 503 }
 504
 505 void iwl_remove_notification(struct iwl_shared *shrd,
 506                                 struct iwl_notification_wait *wait_entry)
 507 {
 508         spin_lock_bh(&shrd->notif_wait_lock);
 509         list_del(&wait_entry->list);
 510         spin_unlock_bh(&shrd->notif_wait_lock);
 511 }
 512
 513 void iwl_abort_notification_waits(struct iwl_shared *shrd)
 514 {
 515         unsigned long flags;
 516         struct iwl_notification_wait *wait_entry;
 517
 518         spin_lock_irqsave(&shrd->notif_wait_lock, flags);
 519         list_for_each_entry(wait_entry, &shrd->notif_waits, list)
 520                 wait_entry->aborted = true;
 521         spin_unlock_irqrestore(&shrd->notif_wait_lock, flags);
 522
 523         wake_up_all(&shrd->notif_waitq);
 524 }
 525
 526 #define UCODE_ALIVE_TIMEOUT     HZ
 527 #define UCODE_CALIB_TIMEOUT     (2*HZ)
 528
 529 int iwl_load_ucode_wait_alive(struct iwl_priv *priv,
 530                                  enum iwl_ucode_type ucode_type)
 531 {
 532         struct iwl_notification_wait alive_wait;
 533         struct iwl_alive_data alive_data;
 534         struct fw_img *fw;
 535         int ret;
 536         enum iwl_ucode_type old_type;
 537
 538         iwl_init_notification_wait(priv->shrd, &alive_wait, REPLY_ALIVE,
 539                                       iwl_alive_fn, &alive_data);
 540
 541         old_type = priv->shrd->ucode_type;
 542         priv->shrd->ucode_type = ucode_type;
 543         fw = iwl_get_ucode_image(priv, ucode_type);
 544
 545         if (!fw)
 546                 return -EINVAL;
 547
 548         ret = iwl_trans_start_fw(trans(priv), fw);
 549         if (ret) {
 550                 priv->shrd->ucode_type = old_type;
 551                 iwl_remove_notification(priv->shrd, &alive_wait);
 552                 return ret;
 553         }
 554
 555         /*
 556          * Some things may run in the background now, but we
 557          * just wait for the ALIVE notification here.
 558          */
 559         ret = iwl_wait_notification(priv->shrd, &alive_wait,
 560                                         UCODE_ALIVE_TIMEOUT);
 561         if (ret) {
 562                 priv->shrd->ucode_type = old_type;
 563                 return ret;
 564         }
 565
 566         if (!alive_data.valid) {
 567                 IWL_ERR(priv, "Loaded ucode is not valid!\n");
 568                 priv->shrd->ucode_type = old_type;
 569                 return -EIO;
 570         }
 571
 572         /*
 573          * This step takes a long time (60-80ms!!) and
 574          * WoWLAN image should be loaded quickly, so
 575          * skip it for WoWLAN.
 576          */
 577         if (ucode_type != IWL_UCODE_WOWLAN) {
 578                 ret = iwl_verify_ucode(priv, ucode_type);
 579                 if (ret) {
 580                         priv->shrd->ucode_type = old_type;
 581                         return ret;
 582                 }
 583
 584                 /* delay a bit to give rfkill time to run */
 585                 msleep(5);
 586         }
 587
 588         ret = iwl_alive_notify(priv);
 589         if (ret) {
 590                 IWL_WARN(priv,
 591                         "Could not complete ALIVE transition: %d\n", ret);
 592                 priv->shrd->ucode_type = old_type;
 593                 return ret;
 594         }
 595
 596         return 0;
 597 }
 598
 599 int iwl_run_init_ucode(struct iwl_priv *priv)
 600 {
 601         struct iwl_notification_wait calib_wait;
 602         int ret;
 603
 604         lockdep_assert_held(&priv->shrd->mutex);
 605
 606         /* No init ucode required? Curious, but maybe ok */
 607         if (!nic(priv)->fw.ucode_init.code.len)
 608                 return 0;
 609
 610         if (priv->shrd->ucode_type != IWL_UCODE_NONE)
 611                 return 0;
 612
 613         iwl_init_notification_wait(priv->shrd, &calib_wait,
 614                                       CALIBRATION_COMPLETE_NOTIFICATION,
 615                                       NULL, NULL);
 616
 617         /* Will also start the device */
 618         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_INIT);
 619         if (ret)
 620                 goto error;
 621
 622         ret = iwl_init_alive_start(priv);
 623         if (ret)
 624                 goto error;
 625
 626         /*
 627          * Some things may run in the background now, but we
 628          * just wait for the calibration complete notification.
 629          */
 630         ret = iwl_wait_notification(priv->shrd, &calib_wait,
 631                                         UCODE_CALIB_TIMEOUT);
 632
 633         goto out;
 634
 635  error:
 636         iwl_remove_notification(priv->shrd, &calib_wait);
 637  out:
 638         /* Whatever happened, stop the device */
 639         iwl_trans_stop_device(trans(priv));
 640         return ret;
 641 }