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/module.h>
  32 #include <linux/init.h>
  33 #include <linux/sched.h>
  34 #include <linux/dma-mapping.h>
  35
  36 #include "iwl-wifi.h"
  37 #include "iwl-dev.h"
  38 #include "iwl-core.h"
  39 #include "iwl-io.h"
  40 #include "iwl-agn-hw.h"
  41 #include "iwl-agn.h"
  42 #include "iwl-agn-calib.h"
  43 #include "iwl-trans.h"
  44 #include "iwl-fh.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 void iwl_free_fw_desc(struct iwl_trans *trans, struct fw_desc *desc)
  84 {
  85         if (desc->v_addr)
  86                 dma_free_coherent(trans->dev, desc->len,
  87                                   desc->v_addr, desc->p_addr);
  88         desc->v_addr = NULL;
  89         desc->len = 0;
  90 }
  91
  92 static void iwl_free_fw_img(struct iwl_trans *trans, struct fw_img *img)
  93 {
  94         iwl_free_fw_desc(trans, &img->code);
  95         iwl_free_fw_desc(trans, &img->data);
  96 }
  97
  98 void iwl_dealloc_ucode(struct iwl_trans *trans)
  99 {
 100         iwl_free_fw_img(trans, &trans->ucode_rt);
 101         iwl_free_fw_img(trans, &trans->ucode_init);
 102         iwl_free_fw_img(trans, &trans->ucode_wowlan);
 103 }
 104
 105 int iwl_alloc_fw_desc(struct iwl_trans *trans, struct fw_desc *desc,
 106                       const void *data, size_t len)
 107 {
 108         if (!len) {
 109                 desc->v_addr = NULL;
 110                 return -EINVAL;
 111         }
 112
 113         desc->v_addr = dma_alloc_coherent(trans->dev, len,
 114                                           &desc->p_addr, GFP_KERNEL);
 115         if (!desc->v_addr)
 116                 return -ENOMEM;
 117
 118         desc->len = len;
 119         memcpy(desc->v_addr, data, len);
 120         return 0;
 121 }
 122
 123 static inline struct fw_img *iwl_get_ucode_image(struct iwl_trans *trans,
 124                                         enum iwl_ucode_type ucode_type)
 125 {
 126         switch (ucode_type) {
 127         case IWL_UCODE_INIT:
 128                 return &trans->ucode_init;
 129         case IWL_UCODE_WOWLAN:
 130                 return &trans->ucode_wowlan;
 131         case IWL_UCODE_REGULAR:
 132                 return &trans->ucode_rt;
 133         case IWL_UCODE_NONE:
 134                 break;
 135         }
 136         return NULL;
 137 }
 138
 139 /*
 140  *  Calibration
 141  */
 142 static int iwl_set_Xtal_calib(struct iwl_trans *trans)
 143 {
 144         struct iwl_calib_xtal_freq_cmd cmd;
 145         __le16 *xtal_calib =
 146                 (__le16 *)iwl_eeprom_query_addr(trans->shrd, EEPROM_XTAL);
 147
 148         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD);
 149         cmd.cap_pin1 = le16_to_cpu(xtal_calib[0]);
 150         cmd.cap_pin2 = le16_to_cpu(xtal_calib[1]);
 151         return iwl_calib_set(trans, (void *)&cmd, sizeof(cmd));
 152 }
 153
 154 static int iwl_set_temperature_offset_calib(struct iwl_trans *trans)
 155 {
 156         struct iwl_calib_temperature_offset_cmd cmd;
 157         __le16 *offset_calib =
 158                 (__le16 *)iwl_eeprom_query_addr(trans->shrd,
 159                                                 EEPROM_RAW_TEMPERATURE);
 160
 161         memset(&cmd, 0, sizeof(cmd));
 162         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
 163         memcpy(&cmd.radio_sensor_offset, offset_calib, sizeof(*offset_calib));
 164         if (!(cmd.radio_sensor_offset))
 165                 cmd.radio_sensor_offset = DEFAULT_RADIO_SENSOR_OFFSET;
 166
 167         IWL_DEBUG_CALIB(trans, "Radio sensor offset: %d\n",
 168                         le16_to_cpu(cmd.radio_sensor_offset));
 169         return iwl_calib_set(trans, (void *)&cmd, sizeof(cmd));
 170 }
 171
 172 static int iwl_set_temperature_offset_calib_v2(struct iwl_trans *trans)
 173 {
 174         struct iwl_calib_temperature_offset_v2_cmd cmd;
 175         __le16 *offset_calib_high = (__le16 *)iwl_eeprom_query_addr(trans->shrd,
 176                                      EEPROM_KELVIN_TEMPERATURE);
 177         __le16 *offset_calib_low =
 178                 (__le16 *)iwl_eeprom_query_addr(trans->shrd,
 179                                                 EEPROM_RAW_TEMPERATURE);
 180         struct iwl_eeprom_calib_hdr *hdr;
 181
 182         memset(&cmd, 0, sizeof(cmd));
 183         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
 184         hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(trans->shrd,
 185                                                         EEPROM_CALIB_ALL);
 186         memcpy(&cmd.radio_sensor_offset_high, offset_calib_high,
 187                 sizeof(*offset_calib_high));
 188         memcpy(&cmd.radio_sensor_offset_low, offset_calib_low,
 189                 sizeof(*offset_calib_low));
 190         if (!(cmd.radio_sensor_offset_low)) {
 191                 IWL_DEBUG_CALIB(trans, "no info in EEPROM, use default\n");
 192                 cmd.radio_sensor_offset_low = DEFAULT_RADIO_SENSOR_OFFSET;
 193                 cmd.radio_sensor_offset_high = DEFAULT_RADIO_SENSOR_OFFSET;
 194         }
 195         memcpy(&cmd.burntVoltageRef, &hdr->voltage,
 196                 sizeof(hdr->voltage));
 197
 198         IWL_DEBUG_CALIB(trans, "Radio sensor offset high: %d\n",
 199                         le16_to_cpu(cmd.radio_sensor_offset_high));
 200         IWL_DEBUG_CALIB(trans, "Radio sensor offset low: %d\n",
 201                         le16_to_cpu(cmd.radio_sensor_offset_low));
 202         IWL_DEBUG_CALIB(trans, "Voltage Ref: %d\n",
 203                         le16_to_cpu(cmd.burntVoltageRef));
 204
 205         return iwl_calib_set(trans, (void *)&cmd, sizeof(cmd));
 206 }
 207
 208 static int iwl_send_calib_cfg(struct iwl_trans *trans)
 209 {
 210         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 211         struct iwl_host_cmd cmd = {
 212                 .id = CALIBRATION_CFG_CMD,
 213                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 214                 .data = { &calib_cfg_cmd, },
 215         };
 216
 217         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 218         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
 219         calib_cfg_cmd.ucd_calib_cfg.once.start = IWL_CALIB_INIT_CFG_ALL;
 220         calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
 221         calib_cfg_cmd.ucd_calib_cfg.flags =
 222                 IWL_CALIB_CFG_FLAG_SEND_COMPLETE_NTFY_MSK;
 223
 224         return iwl_trans_send_cmd(trans, &cmd);
 225 }
 226
 227 int iwlagn_rx_calib_result(struct iwl_priv *priv,
 228                             struct iwl_rx_mem_buffer *rxb,
 229                             struct iwl_device_cmd *cmd)
 230 {
 231         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 232         struct iwl_calib_hdr *hdr = (struct iwl_calib_hdr *)pkt->u.raw;
 233         int len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
 234
 235         /* reduce the size of the length field itself */
 236         len -= 4;
 237
 238         if (iwl_calib_set(trans(priv), hdr, len))
 239                 IWL_ERR(priv, "Failed to record calibration data %d\n",
 240                         hdr->op_code);
 241
 242         return 0;
 243 }
 244
 245 int iwl_init_alive_start(struct iwl_trans *trans)
 246 {
 247         int ret;
 248
 249         if (cfg(trans)->bt_params &&
 250             cfg(trans)->bt_params->advanced_bt_coexist) {
 251                 /*
 252                  * Tell uCode we are ready to perform calibration
 253                  * need to perform this before any calibration
 254                  * no need to close the envlope since we are going
 255                  * to load the runtime uCode later.
 256                  */
 257                 ret = iwl_send_bt_env(trans, IWL_BT_COEX_ENV_OPEN,
 258                         BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 259                 if (ret)
 260                         return ret;
 261
 262         }
 263
 264         ret = iwl_send_calib_cfg(trans);
 265         if (ret)
 266                 return ret;
 267
 268         /**
 269          * temperature offset calibration is only needed for runtime ucode,
 270          * so prepare the value now.
 271          */
 272         if (cfg(trans)->need_temp_offset_calib) {
 273                 if (cfg(trans)->temp_offset_v2)
 274                         return iwl_set_temperature_offset_calib_v2(trans);
 275                 else
 276                         return iwl_set_temperature_offset_calib(trans);
 277         }
 278
 279         return 0;
 280 }
 281
 282 static int iwl_send_wimax_coex(struct iwl_trans *trans)
 283 {
 284         struct iwl_wimax_coex_cmd coex_cmd;
 285
 286         if (cfg(trans)->base_params->support_wimax_coexist) {
 287                 /* UnMask wake up src at associated sleep */
 288                 coex_cmd.flags = COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
 289
 290                 /* UnMask wake up src at unassociated sleep */
 291                 coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
 292                 memcpy(coex_cmd.sta_prio, cu_priorities,
 293                         sizeof(struct iwl_wimax_coex_event_entry) *
 294                          COEX_NUM_OF_EVENTS);
 295
 296                 /* enabling the coexistence feature */
 297                 coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
 298
 299                 /* enabling the priorities tables */
 300                 coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
 301         } else {
 302                 /* coexistence is disabled */
 303                 memset(&coex_cmd, 0, sizeof(coex_cmd));
 304         }
 305         return iwl_trans_send_cmd_pdu(trans,
 306                                 COEX_PRIORITY_TABLE_CMD, CMD_SYNC,
 307                                 sizeof(coex_cmd), &coex_cmd);
 308 }
 309
 310 static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
 311         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 312                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 313         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 314                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 315         ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 316                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 317         ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 318                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 319         ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 320                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 321         ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 322                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 323         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 324                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 325         ((BT_COEX_PRIO_TBL_PRIO_COEX_OFF << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 326                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 327         ((BT_COEX_PRIO_TBL_PRIO_COEX_ON << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 328                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 329         0, 0, 0, 0, 0, 0, 0
 330 };
 331
 332 void iwl_send_prio_tbl(struct iwl_trans *trans)
 333 {
 334         struct iwl_bt_coex_prio_table_cmd prio_tbl_cmd;
 335
 336         memcpy(prio_tbl_cmd.prio_tbl, iwl_bt_prio_tbl,
 337                 sizeof(iwl_bt_prio_tbl));
 338         if (iwl_trans_send_cmd_pdu(trans,
 339                                 REPLY_BT_COEX_PRIO_TABLE, CMD_SYNC,
 340                                 sizeof(prio_tbl_cmd), &prio_tbl_cmd))
 341                 IWL_ERR(trans, "failed to send BT prio tbl command\n");
 342 }
 343
 344 int iwl_send_bt_env(struct iwl_trans *trans, u8 action, u8 type)
 345 {
 346         struct iwl_bt_coex_prot_env_cmd env_cmd;
 347         int ret;
 348
 349         env_cmd.action = action;
 350         env_cmd.type = type;
 351         ret = iwl_trans_send_cmd_pdu(trans,
 352                                REPLY_BT_COEX_PROT_ENV, CMD_SYNC,
 353                                sizeof(env_cmd), &env_cmd);
 354         if (ret)
 355                 IWL_ERR(trans, "failed to send BT env command\n");
 356         return ret;
 357 }
 358
 359
 360 static int iwl_alive_notify(struct iwl_trans *trans)
 361 {
 362         struct iwl_priv *priv = priv(trans);
 363         struct iwl_rxon_context *ctx;
 364         int ret;
 365
 366         if (!priv->tx_cmd_pool)
 367                 priv->tx_cmd_pool =
 368                         kmem_cache_create("iwl_dev_cmd",
 369                                           sizeof(struct iwl_device_cmd),
 370                                           sizeof(void *), 0, NULL);
 371
 372         if (!priv->tx_cmd_pool)
 373                 return -ENOMEM;
 374
 375         iwl_trans_fw_alive(trans);
 376         for_each_context(priv, ctx)
 377                 ctx->last_tx_rejected = false;
 378
 379         ret = iwl_send_wimax_coex(trans);
 380         if (ret)
 381                 return ret;
 382
 383         if (!cfg(priv)->no_xtal_calib) {
 384                 ret = iwl_set_Xtal_calib(trans);
 385                 if (ret)
 386                         return ret;
 387         }
 388
 389         return iwl_send_calib_results(trans);
 390 }
 391
 392
 393 /**
 394  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
 395  *   using sample data 100 bytes apart.  If these sample points are good,
 396  *   it's a pretty good bet that everything between them is good, too.
 397  */
 398 static int iwl_verify_inst_sparse(struct iwl_trans *trans,
 399                                       struct fw_desc *fw_desc)
 400 {
 401         __le32 *image = (__le32 *)fw_desc->v_addr;
 402         u32 len = fw_desc->len;
 403         u32 val;
 404         u32 i;
 405
 406         IWL_DEBUG_FW(trans, "ucode inst image size is %u\n", len);
 407
 408         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
 409                 /* read data comes through single port, auto-incr addr */
 410                 /* NOTE: Use the debugless read so we don't flood kernel log
 411                  * if IWL_DL_IO is set */
 412                 iwl_write_direct32(trans, HBUS_TARG_MEM_RADDR,
 413                         i + IWLAGN_RTC_INST_LOWER_BOUND);
 414                 val = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
 415                 if (val != le32_to_cpu(*image))
 416                         return -EIO;
 417         }
 418
 419         return 0;
 420 }
 421
 422 static void iwl_print_mismatch_inst(struct iwl_trans *trans,
 423                                     struct fw_desc *fw_desc)
 424 {
 425         __le32 *image = (__le32 *)fw_desc->v_addr;
 426         u32 len = fw_desc->len;
 427         u32 val;
 428         u32 offs;
 429         int errors = 0;
 430
 431         IWL_DEBUG_FW(trans, "ucode inst image size is %u\n", len);
 432
 433         iwl_write_direct32(trans, HBUS_TARG_MEM_RADDR,
 434                            IWLAGN_RTC_INST_LOWER_BOUND);
 435
 436         for (offs = 0;
 437              offs < len && errors < 20;
 438              offs += sizeof(u32), image++) {
 439                 /* read data comes through single port, auto-incr addr */
 440                 val = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
 441                 if (val != le32_to_cpu(*image)) {
 442                         IWL_ERR(trans, "uCode INST section at "
 443                                 "offset 0x%x, is 0x%x, s/b 0x%x\n",
 444                                 offs, val, le32_to_cpu(*image));
 445                         errors++;
 446                 }
 447         }
 448 }
 449
 450 /**
 451  * iwl_verify_ucode - determine which instruction image is in SRAM,
 452  *    and verify its contents
 453  */
 454 static int iwl_verify_ucode(struct iwl_trans *trans,
 455                             enum iwl_ucode_type ucode_type)
 456 {
 457         struct fw_img *img = iwl_get_ucode_image(trans, ucode_type);
 458
 459         if (!img) {
 460                 IWL_ERR(trans, "Invalid ucode requested (%d)\n", ucode_type);
 461                 return -EINVAL;
 462         }
 463
 464         if (!iwl_verify_inst_sparse(trans, &img->code)) {
 465                 IWL_DEBUG_FW(trans, "uCode is good in inst SRAM\n");
 466                 return 0;
 467         }
 468
 469         IWL_ERR(trans, "UCODE IMAGE IN INSTRUCTION SRAM NOT VALID!!\n");
 470
 471         iwl_print_mismatch_inst(trans, &img->code);
 472         return -EIO;
 473 }
 474
 475 struct iwl_alive_data {
 476         bool valid;
 477         u8 subtype;
 478 };
 479
 480 static void iwl_alive_fn(struct iwl_trans *trans,
 481                             struct iwl_rx_packet *pkt,
 482                             void *data)
 483 {
 484         struct iwl_alive_data *alive_data = data;
 485         struct iwl_alive_resp *palive;
 486
 487         palive = &pkt->u.alive_frame;
 488
 489         IWL_DEBUG_FW(trans, "Alive ucode status 0x%08X revision "
 490                        "0x%01X 0x%01X\n",
 491                        palive->is_valid, palive->ver_type,
 492                        palive->ver_subtype);
 493
 494         trans->shrd->device_pointers.error_event_table =
 495                 le32_to_cpu(palive->error_event_table_ptr);
 496         trans->shrd->device_pointers.log_event_table =
 497                 le32_to_cpu(palive->log_event_table_ptr);
 498
 499         alive_data->subtype = palive->ver_subtype;
 500         alive_data->valid = palive->is_valid == UCODE_VALID_OK;
 501 }
 502
 503 /* notification wait support */
 504 void iwl_init_notification_wait(struct iwl_shared *shrd,
 505                                    struct iwl_notification_wait *wait_entry,
 506                                    u8 cmd,
 507                                    void (*fn)(struct iwl_trans *trans,
 508                                               struct iwl_rx_packet *pkt,
 509                                               void *data),
 510                                    void *fn_data)
 511 {
 512         wait_entry->fn = fn;
 513         wait_entry->fn_data = fn_data;
 514         wait_entry->cmd = cmd;
 515         wait_entry->triggered = false;
 516         wait_entry->aborted = false;
 517
 518         spin_lock_bh(&shrd->notif_wait_lock);
 519         list_add(&wait_entry->list, &shrd->notif_waits);
 520         spin_unlock_bh(&shrd->notif_wait_lock);
 521 }
 522
 523 int iwl_wait_notification(struct iwl_shared *shrd,
 524                              struct iwl_notification_wait *wait_entry,
 525                              unsigned long timeout)
 526 {
 527         int ret;
 528
 529         ret = wait_event_timeout(shrd->notif_waitq,
 530                                  wait_entry->triggered || wait_entry->aborted,
 531                                  timeout);
 532
 533         spin_lock_bh(&shrd->notif_wait_lock);
 534         list_del(&wait_entry->list);
 535         spin_unlock_bh(&shrd->notif_wait_lock);
 536
 537         if (wait_entry->aborted)
 538                 return -EIO;
 539
 540         /* return value is always >= 0 */
 541         if (ret <= 0)
 542                 return -ETIMEDOUT;
 543         return 0;
 544 }
 545
 546 void iwl_remove_notification(struct iwl_shared *shrd,
 547                                 struct iwl_notification_wait *wait_entry)
 548 {
 549         spin_lock_bh(&shrd->notif_wait_lock);
 550         list_del(&wait_entry->list);
 551         spin_unlock_bh(&shrd->notif_wait_lock);
 552 }
 553
 554 void iwl_abort_notification_waits(struct iwl_shared *shrd)
 555 {
 556         unsigned long flags;
 557         struct iwl_notification_wait *wait_entry;
 558
 559         spin_lock_irqsave(&shrd->notif_wait_lock, flags);
 560         list_for_each_entry(wait_entry, &shrd->notif_waits, list)
 561                 wait_entry->aborted = true;
 562         spin_unlock_irqrestore(&shrd->notif_wait_lock, flags);
 563
 564         wake_up_all(&shrd->notif_waitq);
 565 }
 566
 567 #define UCODE_ALIVE_TIMEOUT     HZ
 568 #define UCODE_CALIB_TIMEOUT     (2*HZ)
 569
 570 int iwl_load_ucode_wait_alive(struct iwl_trans *trans,
 571                                  enum iwl_ucode_type ucode_type)
 572 {
 573         struct iwl_notification_wait alive_wait;
 574         struct iwl_alive_data alive_data;
 575         struct fw_img *fw;
 576         int ret;
 577         enum iwl_ucode_type old_type;
 578
 579         iwl_init_notification_wait(trans->shrd, &alive_wait, REPLY_ALIVE,
 580                                       iwl_alive_fn, &alive_data);
 581
 582         old_type = trans->shrd->ucode_type;
 583         trans->shrd->ucode_type = ucode_type;
 584         fw = iwl_get_ucode_image(trans, ucode_type);
 585
 586         if (!fw)
 587                 return -EINVAL;
 588
 589         ret = iwl_trans_start_fw(trans, fw);
 590         if (ret) {
 591                 trans->shrd->ucode_type = old_type;
 592                 iwl_remove_notification(trans->shrd, &alive_wait);
 593                 return ret;
 594         }
 595
 596         /*
 597          * Some things may run in the background now, but we
 598          * just wait for the ALIVE notification here.
 599          */
 600         ret = iwl_wait_notification(trans->shrd, &alive_wait,
 601                                         UCODE_ALIVE_TIMEOUT);
 602         if (ret) {
 603                 trans->shrd->ucode_type = old_type;
 604                 return ret;
 605         }
 606
 607         if (!alive_data.valid) {
 608                 IWL_ERR(trans, "Loaded ucode is not valid!\n");
 609                 trans->shrd->ucode_type = old_type;
 610                 return -EIO;
 611         }
 612
 613         /*
 614          * This step takes a long time (60-80ms!!) and
 615          * WoWLAN image should be loaded quickly, so
 616          * skip it for WoWLAN.
 617          */
 618         if (ucode_type != IWL_UCODE_WOWLAN) {
 619                 ret = iwl_verify_ucode(trans, ucode_type);
 620                 if (ret) {
 621                         trans->shrd->ucode_type = old_type;
 622                         return ret;
 623                 }
 624
 625                 /* delay a bit to give rfkill time to run */
 626                 msleep(5);
 627         }
 628
 629         ret = iwl_alive_notify(trans);
 630         if (ret) {
 631                 IWL_WARN(trans,
 632                         "Could not complete ALIVE transition: %d\n", ret);
 633                 trans->shrd->ucode_type = old_type;
 634                 return ret;
 635         }
 636
 637         return 0;
 638 }
 639
 640 int iwl_run_init_ucode(struct iwl_trans *trans)
 641 {
 642         struct iwl_notification_wait calib_wait;
 643         int ret;
 644
 645         lockdep_assert_held(&trans->shrd->mutex);
 646
 647         /* No init ucode required? Curious, but maybe ok */
 648         if (!trans->ucode_init.code.len)
 649                 return 0;
 650
 651         if (trans->shrd->ucode_type != IWL_UCODE_NONE)
 652                 return 0;
 653
 654         iwl_init_notification_wait(trans->shrd, &calib_wait,
 655                                       CALIBRATION_COMPLETE_NOTIFICATION,
 656                                       NULL, NULL);
 657
 658         /* Will also start the device */
 659         ret = iwl_load_ucode_wait_alive(trans, IWL_UCODE_INIT);
 660         if (ret)
 661                 goto error;
 662
 663         ret = iwl_init_alive_start(trans);
 664         if (ret)
 665                 goto error;
 666
 667         /*
 668          * Some things may run in the background now, but we
 669          * just wait for the calibration complete notification.
 670          */
 671         ret = iwl_wait_notification(trans->shrd, &calib_wait,
 672                                         UCODE_CALIB_TIMEOUT);
 673
 674         goto out;
 675
 676  error:
 677         iwl_remove_notification(trans->shrd, &calib_wait);
 678  out:
 679         /* Whatever happened, stop the device */
 680         iwl_trans_stop_device(trans);
 681         return ret;
 682 }