drivers/net/wireless/iwlwifi/dvm/ucode.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2014 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 COPYING.
  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
  32 #include "iwl-io.h"
  33 #include "iwl-agn-hw.h"
  34 #include "iwl-trans.h"
  35 #include "iwl-fh.h"
  36 #include "iwl-op-mode.h"
  37
  38 #include "dev.h"
  39 #include "agn.h"
  40 #include "calib.h"
  41
  42 /******************************************************************************
  43  *
  44  * uCode download functions
  45  *
  46  ******************************************************************************/
  47
  48 static inline const struct fw_img *
  49 iwl_get_ucode_image(struct iwl_priv *priv, enum iwl_ucode_type ucode_type)
  50 {
  51         if (ucode_type >= IWL_UCODE_TYPE_MAX)
  52                 return NULL;
  53
  54         return &priv->fw->img[ucode_type];
  55 }
  56
  57 /*
  58  *  Calibration
  59  */
  60 static int iwl_set_Xtal_calib(struct iwl_priv *priv)
  61 {
  62         struct iwl_calib_xtal_freq_cmd cmd;
  63         __le16 *xtal_calib = priv->nvm_data->xtal_calib;
  64
  65         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD);
  66         cmd.cap_pin1 = le16_to_cpu(xtal_calib[0]);
  67         cmd.cap_pin2 = le16_to_cpu(xtal_calib[1]);
  68         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
  69 }
  70
  71 static int iwl_set_temperature_offset_calib(struct iwl_priv *priv)
  72 {
  73         struct iwl_calib_temperature_offset_cmd cmd;
  74
  75         memset(&cmd, 0, sizeof(cmd));
  76         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
  77         cmd.radio_sensor_offset = priv->nvm_data->raw_temperature;
  78         if (!(cmd.radio_sensor_offset))
  79                 cmd.radio_sensor_offset = DEFAULT_RADIO_SENSOR_OFFSET;
  80
  81         IWL_DEBUG_CALIB(priv, "Radio sensor offset: %d\n",
  82                         le16_to_cpu(cmd.radio_sensor_offset));
  83         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
  84 }
  85
  86 static int iwl_set_temperature_offset_calib_v2(struct iwl_priv *priv)
  87 {
  88         struct iwl_calib_temperature_offset_v2_cmd cmd;
  89
  90         memset(&cmd, 0, sizeof(cmd));
  91         iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
  92         cmd.radio_sensor_offset_high = priv->nvm_data->kelvin_temperature;
  93         cmd.radio_sensor_offset_low = priv->nvm_data->raw_temperature;
  94         if (!cmd.radio_sensor_offset_low) {
  95                 IWL_DEBUG_CALIB(priv, "no info in EEPROM, use default\n");
  96                 cmd.radio_sensor_offset_low = DEFAULT_RADIO_SENSOR_OFFSET;
  97                 cmd.radio_sensor_offset_high = DEFAULT_RADIO_SENSOR_OFFSET;
  98         }
  99         cmd.burntVoltageRef = priv->nvm_data->calib_voltage;
 100
 101         IWL_DEBUG_CALIB(priv, "Radio sensor offset high: %d\n",
 102                         le16_to_cpu(cmd.radio_sensor_offset_high));
 103         IWL_DEBUG_CALIB(priv, "Radio sensor offset low: %d\n",
 104                         le16_to_cpu(cmd.radio_sensor_offset_low));
 105         IWL_DEBUG_CALIB(priv, "Voltage Ref: %d\n",
 106                         le16_to_cpu(cmd.burntVoltageRef));
 107
 108         return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
 109 }
 110
 111 static int iwl_send_calib_cfg(struct iwl_priv *priv)
 112 {
 113         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 114         struct iwl_host_cmd cmd = {
 115                 .id = CALIBRATION_CFG_CMD,
 116                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 117                 .data = { &calib_cfg_cmd, },
 118         };
 119
 120         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 121         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
 122         calib_cfg_cmd.ucd_calib_cfg.once.start = IWL_CALIB_INIT_CFG_ALL;
 123         calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
 124         calib_cfg_cmd.ucd_calib_cfg.flags =
 125                 IWL_CALIB_CFG_FLAG_SEND_COMPLETE_NTFY_MSK;
 126
 127         return iwl_dvm_send_cmd(priv, &cmd);
 128 }
 129
 130 int iwl_init_alive_start(struct iwl_priv *priv)
 131 {
 132         int ret;
 133
 134         if (priv->lib->bt_params &&
 135             priv->lib->bt_params->advanced_bt_coexist) {
 136                 /*
 137                  * Tell uCode we are ready to perform calibration
 138                  * need to perform this before any calibration
 139                  * no need to close the envlope since we are going
 140                  * to load the runtime uCode later.
 141                  */
 142                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 143                         BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 144                 if (ret)
 145                         return ret;
 146
 147         }
 148
 149         ret = iwl_send_calib_cfg(priv);
 150         if (ret)
 151                 return ret;
 152
 153         /**
 154          * temperature offset calibration is only needed for runtime ucode,
 155          * so prepare the value now.
 156          */
 157         if (priv->lib->need_temp_offset_calib) {
 158                 if (priv->lib->temp_offset_v2)
 159                         return iwl_set_temperature_offset_calib_v2(priv);
 160                 else
 161                         return iwl_set_temperature_offset_calib(priv);
 162         }
 163
 164         return 0;
 165 }
 166
 167 static int iwl_send_wimax_coex(struct iwl_priv *priv)
 168 {
 169         struct iwl_wimax_coex_cmd coex_cmd;
 170
 171         /* coexistence is disabled */
 172         memset(&coex_cmd, 0, sizeof(coex_cmd));
 173
 174         return iwl_dvm_send_cmd_pdu(priv,
 175                                 COEX_PRIORITY_TABLE_CMD, CMD_SYNC,
 176                                 sizeof(coex_cmd), &coex_cmd);
 177 }
 178
 179 static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
 180         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 181                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 182         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 183                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 184         ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 185                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 186         ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 187                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 188         ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 189                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 190         ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 191                 (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 192         ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 193                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 194         ((BT_COEX_PRIO_TBL_PRIO_COEX_OFF << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 195                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 196         ((BT_COEX_PRIO_TBL_PRIO_COEX_ON << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 197                 (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 198         0, 0, 0, 0, 0, 0, 0
 199 };
 200
 201 void iwl_send_prio_tbl(struct iwl_priv *priv)
 202 {
 203         struct iwl_bt_coex_prio_table_cmd prio_tbl_cmd;
 204
 205         memcpy(prio_tbl_cmd.prio_tbl, iwl_bt_prio_tbl,
 206                 sizeof(iwl_bt_prio_tbl));
 207         if (iwl_dvm_send_cmd_pdu(priv,
 208                                 REPLY_BT_COEX_PRIO_TABLE, CMD_SYNC,
 209                                 sizeof(prio_tbl_cmd), &prio_tbl_cmd))
 210                 IWL_ERR(priv, "failed to send BT prio tbl command\n");
 211 }
 212
 213 int iwl_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
 214 {
 215         struct iwl_bt_coex_prot_env_cmd env_cmd;
 216         int ret;
 217
 218         env_cmd.action = action;
 219         env_cmd.type = type;
 220         ret = iwl_dvm_send_cmd_pdu(priv,
 221                                REPLY_BT_COEX_PROT_ENV, CMD_SYNC,
 222                                sizeof(env_cmd), &env_cmd);
 223         if (ret)
 224                 IWL_ERR(priv, "failed to send BT env command\n");
 225         return ret;
 226 }
 227
 228 static const u8 iwlagn_default_queue_to_tx_fifo[] = {
 229         IWL_TX_FIFO_VO,
 230         IWL_TX_FIFO_VI,
 231         IWL_TX_FIFO_BE,
 232         IWL_TX_FIFO_BK,
 233 };
 234
 235 static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
 236         IWL_TX_FIFO_VO,
 237         IWL_TX_FIFO_VI,
 238         IWL_TX_FIFO_BE,
 239         IWL_TX_FIFO_BK,
 240         IWL_TX_FIFO_BK_IPAN,
 241         IWL_TX_FIFO_BE_IPAN,
 242         IWL_TX_FIFO_VI_IPAN,
 243         IWL_TX_FIFO_VO_IPAN,
 244         IWL_TX_FIFO_BE_IPAN,
 245         IWL_TX_FIFO_UNUSED,
 246         IWL_TX_FIFO_AUX,
 247 };
 248
 249 static int iwl_alive_notify(struct iwl_priv *priv)
 250 {
 251         const u8 *queue_to_txf;
 252         u8 n_queues;
 253         int ret;
 254         int i;
 255
 256         iwl_trans_fw_alive(priv->trans, 0);
 257
 258         if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN &&
 259             priv->nvm_data->sku_cap_ipan_enable) {
 260                 n_queues = ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
 261                 queue_to_txf = iwlagn_ipan_queue_to_tx_fifo;
 262         } else {
 263                 n_queues = ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
 264                 queue_to_txf = iwlagn_default_queue_to_tx_fifo;
 265         }
 266
 267         for (i = 0; i < n_queues; i++)
 268                 if (queue_to_txf[i] != IWL_TX_FIFO_UNUSED)
 269                         iwl_trans_ac_txq_enable(priv->trans, i,
 270                                                 queue_to_txf[i]);
 271
 272         priv->passive_no_rx = false;
 273         priv->transport_queue_stop = 0;
 274
 275         ret = iwl_send_wimax_coex(priv);
 276         if (ret)
 277                 return ret;
 278
 279         if (!priv->lib->no_xtal_calib) {
 280                 ret = iwl_set_Xtal_calib(priv);
 281                 if (ret)
 282                         return ret;
 283         }
 284
 285         return iwl_send_calib_results(priv);
 286 }
 287
 288 struct iwl_alive_data {
 289         bool valid;
 290         u8 subtype;
 291 };
 292
 293 static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
 294                          struct iwl_rx_packet *pkt, void *data)
 295 {
 296         struct iwl_priv *priv =
 297                 container_of(notif_wait, struct iwl_priv, notif_wait);
 298         struct iwl_alive_data *alive_data = data;
 299         struct iwl_alive_resp *palive;
 300
 301         palive = (void *)pkt->data;
 302
 303         IWL_DEBUG_FW(priv, "Alive ucode status 0x%08X revision "
 304                        "0x%01X 0x%01X\n",
 305                        palive->is_valid, palive->ver_type,
 306                        palive->ver_subtype);
 307
 308         priv->device_pointers.error_event_table =
 309                 le32_to_cpu(palive->error_event_table_ptr);
 310         priv->device_pointers.log_event_table =
 311                 le32_to_cpu(palive->log_event_table_ptr);
 312
 313         alive_data->subtype = palive->ver_subtype;
 314         alive_data->valid = palive->is_valid == UCODE_VALID_OK;
 315
 316         return true;
 317 }
 318
 319 #define UCODE_ALIVE_TIMEOUT     HZ
 320 #define UCODE_CALIB_TIMEOUT     (2*HZ)
 321
 322 int iwl_load_ucode_wait_alive(struct iwl_priv *priv,
 323                                  enum iwl_ucode_type ucode_type)
 324 {
 325         struct iwl_notification_wait alive_wait;
 326         struct iwl_alive_data alive_data;
 327         const struct fw_img *fw;
 328         int ret;
 329         enum iwl_ucode_type old_type;
 330         static const u8 alive_cmd[] = { REPLY_ALIVE };
 331
 332         fw = iwl_get_ucode_image(priv, ucode_type);
 333         if (WARN_ON(!fw))
 334                 return -EINVAL;
 335
 336         old_type = priv->cur_ucode;
 337         priv->cur_ucode = ucode_type;
 338         priv->ucode_loaded = false;
 339
 340         iwl_init_notification_wait(&priv->notif_wait, &alive_wait,
 341                                    alive_cmd, ARRAY_SIZE(alive_cmd),
 342                                    iwl_alive_fn, &alive_data);
 343
 344         ret = iwl_trans_start_fw(priv->trans, fw, false);
 345         if (ret) {
 346                 priv->cur_ucode = old_type;
 347                 iwl_remove_notification(&priv->notif_wait, &alive_wait);
 348                 return ret;
 349         }
 350
 351         /*
 352          * Some things may run in the background now, but we
 353          * just wait for the ALIVE notification here.
 354          */
 355         ret = iwl_wait_notification(&priv->notif_wait, &alive_wait,
 356                                         UCODE_ALIVE_TIMEOUT);
 357         if (ret) {
 358                 priv->cur_ucode = old_type;
 359                 return ret;
 360         }
 361
 362         if (!alive_data.valid) {
 363                 IWL_ERR(priv, "Loaded ucode is not valid!\n");
 364                 priv->cur_ucode = old_type;
 365                 return -EIO;
 366         }
 367
 368         priv->ucode_loaded = true;
 369
 370         if (ucode_type != IWL_UCODE_WOWLAN) {
 371                 /* delay a bit to give rfkill time to run */
 372                 msleep(5);
 373         }
 374
 375         ret = iwl_alive_notify(priv);
 376         if (ret) {
 377                 IWL_WARN(priv,
 378                         "Could not complete ALIVE transition: %d\n", ret);
 379                 priv->cur_ucode = old_type;
 380                 return ret;
 381         }
 382
 383         return 0;
 384 }
 385
 386 static bool iwlagn_wait_calib(struct iwl_notif_wait_data *notif_wait,
 387                               struct iwl_rx_packet *pkt, void *data)
 388 {
 389         struct iwl_priv *priv = data;
 390         struct iwl_calib_hdr *hdr;
 391
 392         if (pkt->hdr.cmd != CALIBRATION_RES_NOTIFICATION) {
 393                 WARN_ON(pkt->hdr.cmd != CALIBRATION_COMPLETE_NOTIFICATION);
 394                 return true;
 395         }
 396
 397         hdr = (struct iwl_calib_hdr *)pkt->data;
 398
 399         if (iwl_calib_set(priv, hdr, iwl_rx_packet_payload_len(pkt)))
 400                 IWL_ERR(priv, "Failed to record calibration data %d\n",
 401                         hdr->op_code);
 402
 403         return false;
 404 }
 405
 406 int iwl_run_init_ucode(struct iwl_priv *priv)
 407 {
 408         struct iwl_notification_wait calib_wait;
 409         static const u8 calib_complete[] = {
 410                 CALIBRATION_RES_NOTIFICATION,
 411                 CALIBRATION_COMPLETE_NOTIFICATION
 412         };
 413         int ret;
 414
 415         lockdep_assert_held(&priv->mutex);
 416
 417         /* No init ucode required? Curious, but maybe ok */
 418         if (!priv->fw->img[IWL_UCODE_INIT].sec[0].len)
 419                 return 0;
 420
 421         if (priv->init_ucode_run)
 422                 return 0;
 423
 424         iwl_init_notification_wait(&priv->notif_wait, &calib_wait,
 425                                    calib_complete, ARRAY_SIZE(calib_complete),
 426                                    iwlagn_wait_calib, priv);
 427
 428         /* Will also start the device */
 429         ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_INIT);
 430         if (ret)
 431                 goto error;
 432
 433         ret = iwl_init_alive_start(priv);
 434         if (ret)
 435                 goto error;
 436
 437         /*
 438          * Some things may run in the background now, but we
 439          * just wait for the calibration complete notification.
 440          */
 441         ret = iwl_wait_notification(&priv->notif_wait, &calib_wait,
 442                                         UCODE_CALIB_TIMEOUT);
 443         if (!ret)
 444                 priv->init_ucode_run = true;
 445
 446         goto out;
 447
 448  error:
 449         iwl_remove_notification(&priv->notif_wait, &calib_wait);
 450  out:
 451         /* Whatever happened, stop the device */
 452         iwl_trans_stop_device(priv->trans);
 453         priv->ucode_loaded = false;
 454
 455         return ret;
 456 }