linux/drivers/net/wireless/iwlwifi/dvm/ucode.c
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   1/******************************************************************************
   2 *
   3 * GPL LICENSE SUMMARY
   4 *
   5 * Copyright(c) 2008 - 2013 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#include <linux/init.h>
  32
  33#include "iwl-io.h"
  34#include "iwl-agn-hw.h"
  35#include "iwl-trans.h"
  36#include "iwl-fh.h"
  37#include "iwl-op-mode.h"
  38
  39#include "dev.h"
  40#include "agn.h"
  41#include "calib.h"
  42
  43/******************************************************************************
  44 *
  45 * uCode download functions
  46 *
  47 ******************************************************************************/
  48
  49static inline const struct fw_img *
  50iwl_get_ucode_image(struct iwl_priv *priv, enum iwl_ucode_type ucode_type)
  51{
  52        if (ucode_type >= IWL_UCODE_TYPE_MAX)
  53                return NULL;
  54
  55        return &priv->fw->img[ucode_type];
  56}
  57
  58/*
  59 *  Calibration
  60 */
  61static int iwl_set_Xtal_calib(struct iwl_priv *priv)
  62{
  63        struct iwl_calib_xtal_freq_cmd cmd;
  64        __le16 *xtal_calib = priv->nvm_data->xtal_calib;
  65
  66        iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_CRYSTAL_FRQ_CMD);
  67        cmd.cap_pin1 = le16_to_cpu(xtal_calib[0]);
  68        cmd.cap_pin2 = le16_to_cpu(xtal_calib[1]);
  69        return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
  70}
  71
  72static int iwl_set_temperature_offset_calib(struct iwl_priv *priv)
  73{
  74        struct iwl_calib_temperature_offset_cmd cmd;
  75
  76        memset(&cmd, 0, sizeof(cmd));
  77        iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
  78        cmd.radio_sensor_offset = priv->nvm_data->raw_temperature;
  79        if (!(cmd.radio_sensor_offset))
  80                cmd.radio_sensor_offset = DEFAULT_RADIO_SENSOR_OFFSET;
  81
  82        IWL_DEBUG_CALIB(priv, "Radio sensor offset: %d\n",
  83                        le16_to_cpu(cmd.radio_sensor_offset));
  84        return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
  85}
  86
  87static int iwl_set_temperature_offset_calib_v2(struct iwl_priv *priv)
  88{
  89        struct iwl_calib_temperature_offset_v2_cmd cmd;
  90
  91        memset(&cmd, 0, sizeof(cmd));
  92        iwl_set_calib_hdr(&cmd.hdr, IWL_PHY_CALIBRATE_TEMP_OFFSET_CMD);
  93        cmd.radio_sensor_offset_high = priv->nvm_data->kelvin_temperature;
  94        cmd.radio_sensor_offset_low = priv->nvm_data->raw_temperature;
  95        if (!cmd.radio_sensor_offset_low) {
  96                IWL_DEBUG_CALIB(priv, "no info in EEPROM, use default\n");
  97                cmd.radio_sensor_offset_low = DEFAULT_RADIO_SENSOR_OFFSET;
  98                cmd.radio_sensor_offset_high = DEFAULT_RADIO_SENSOR_OFFSET;
  99        }
 100        cmd.burntVoltageRef = priv->nvm_data->calib_voltage;
 101
 102        IWL_DEBUG_CALIB(priv, "Radio sensor offset high: %d\n",
 103                        le16_to_cpu(cmd.radio_sensor_offset_high));
 104        IWL_DEBUG_CALIB(priv, "Radio sensor offset low: %d\n",
 105                        le16_to_cpu(cmd.radio_sensor_offset_low));
 106        IWL_DEBUG_CALIB(priv, "Voltage Ref: %d\n",
 107                        le16_to_cpu(cmd.burntVoltageRef));
 108
 109        return iwl_calib_set(priv, (void *)&cmd, sizeof(cmd));
 110}
 111
 112static int iwl_send_calib_cfg(struct iwl_priv *priv)
 113{
 114        struct iwl_calib_cfg_cmd calib_cfg_cmd;
 115        struct iwl_host_cmd cmd = {
 116                .id = CALIBRATION_CFG_CMD,
 117                .len = { sizeof(struct iwl_calib_cfg_cmd), },
 118                .data = { &calib_cfg_cmd, },
 119        };
 120
 121        memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 122        calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
 123        calib_cfg_cmd.ucd_calib_cfg.once.start = IWL_CALIB_INIT_CFG_ALL;
 124        calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
 125        calib_cfg_cmd.ucd_calib_cfg.flags =
 126                IWL_CALIB_CFG_FLAG_SEND_COMPLETE_NTFY_MSK;
 127
 128        return iwl_dvm_send_cmd(priv, &cmd);
 129}
 130
 131int iwl_init_alive_start(struct iwl_priv *priv)
 132{
 133        int ret;
 134
 135        if (priv->lib->bt_params &&
 136            priv->lib->bt_params->advanced_bt_coexist) {
 137                /*
 138                 * Tell uCode we are ready to perform calibration
 139                 * need to perform this before any calibration
 140                 * no need to close the envlope since we are going
 141                 * to load the runtime uCode later.
 142                 */
 143                ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 144                        BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 145                if (ret)
 146                        return ret;
 147
 148        }
 149
 150        ret = iwl_send_calib_cfg(priv);
 151        if (ret)
 152                return ret;
 153
 154        /**
 155         * temperature offset calibration is only needed for runtime ucode,
 156         * so prepare the value now.
 157         */
 158        if (priv->lib->need_temp_offset_calib) {
 159                if (priv->lib->temp_offset_v2)
 160                        return iwl_set_temperature_offset_calib_v2(priv);
 161                else
 162                        return iwl_set_temperature_offset_calib(priv);
 163        }
 164
 165        return 0;
 166}
 167
 168static int iwl_send_wimax_coex(struct iwl_priv *priv)
 169{
 170        struct iwl_wimax_coex_cmd coex_cmd;
 171
 172        /* coexistence is disabled */
 173        memset(&coex_cmd, 0, sizeof(coex_cmd));
 174
 175        return iwl_dvm_send_cmd_pdu(priv,
 176                                COEX_PRIORITY_TABLE_CMD, CMD_SYNC,
 177                                sizeof(coex_cmd), &coex_cmd);
 178}
 179
 180static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
 181        ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 182                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 183        ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 184                (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 185        ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 186                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 187        ((BT_COEX_PRIO_TBL_PRIO_LOW << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 188                (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 189        ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 190                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 191        ((BT_COEX_PRIO_TBL_PRIO_HIGH << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 192                (1 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 193        ((BT_COEX_PRIO_TBL_PRIO_BYPASS << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 194                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 195        ((BT_COEX_PRIO_TBL_PRIO_COEX_OFF << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 196                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 197        ((BT_COEX_PRIO_TBL_PRIO_COEX_ON << IWL_BT_COEX_PRIO_TBL_PRIO_POS) |
 198                (0 << IWL_BT_COEX_PRIO_TBL_SHARED_ANTENNA_POS)),
 199        0, 0, 0, 0, 0, 0, 0
 200};
 201
 202void iwl_send_prio_tbl(struct iwl_priv *priv)
 203{
 204        struct iwl_bt_coex_prio_table_cmd prio_tbl_cmd;
 205
 206        memcpy(prio_tbl_cmd.prio_tbl, iwl_bt_prio_tbl,
 207                sizeof(iwl_bt_prio_tbl));
 208        if (iwl_dvm_send_cmd_pdu(priv,
 209                                REPLY_BT_COEX_PRIO_TABLE, CMD_SYNC,
 210                                sizeof(prio_tbl_cmd), &prio_tbl_cmd))
 211                IWL_ERR(priv, "failed to send BT prio tbl command\n");
 212}
 213
 214int iwl_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
 215{
 216        struct iwl_bt_coex_prot_env_cmd env_cmd;
 217        int ret;
 218
 219        env_cmd.action = action;
 220        env_cmd.type = type;
 221        ret = iwl_dvm_send_cmd_pdu(priv,
 222                               REPLY_BT_COEX_PROT_ENV, CMD_SYNC,
 223                               sizeof(env_cmd), &env_cmd);
 224        if (ret)
 225                IWL_ERR(priv, "failed to send BT env command\n");
 226        return ret;
 227}
 228
 229static const u8 iwlagn_default_queue_to_tx_fifo[] = {
 230        IWL_TX_FIFO_VO,
 231        IWL_TX_FIFO_VI,
 232        IWL_TX_FIFO_BE,
 233        IWL_TX_FIFO_BK,
 234};
 235
 236static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
 237        IWL_TX_FIFO_VO,
 238        IWL_TX_FIFO_VI,
 239        IWL_TX_FIFO_BE,
 240        IWL_TX_FIFO_BK,
 241        IWL_TX_FIFO_BK_IPAN,
 242        IWL_TX_FIFO_BE_IPAN,
 243        IWL_TX_FIFO_VI_IPAN,
 244        IWL_TX_FIFO_VO_IPAN,
 245        IWL_TX_FIFO_BE_IPAN,
 246        IWL_TX_FIFO_UNUSED,
 247        IWL_TX_FIFO_AUX,
 248};
 249
 250static int iwl_alive_notify(struct iwl_priv *priv)
 251{
 252        const u8 *queue_to_txf;
 253        u8 n_queues;
 254        int ret;
 255        int i;
 256
 257        iwl_trans_fw_alive(priv->trans, 0);
 258
 259        if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN &&
 260            priv->nvm_data->sku_cap_ipan_enable) {
 261                n_queues = ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
 262                queue_to_txf = iwlagn_ipan_queue_to_tx_fifo;
 263        } else {
 264                n_queues = ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
 265                queue_to_txf = iwlagn_default_queue_to_tx_fifo;
 266        }
 267
 268        for (i = 0; i < n_queues; i++)
 269                if (queue_to_txf[i] != IWL_TX_FIFO_UNUSED)
 270                        iwl_trans_ac_txq_enable(priv->trans, i,
 271                                                queue_to_txf[i]);
 272
 273        priv->passive_no_rx = false;
 274        priv->transport_queue_stop = 0;
 275
 276        ret = iwl_send_wimax_coex(priv);
 277        if (ret)
 278                return ret;
 279
 280        if (!priv->lib->no_xtal_calib) {
 281                ret = iwl_set_Xtal_calib(priv);
 282                if (ret)
 283                        return ret;
 284        }
 285
 286        return iwl_send_calib_results(priv);
 287}
 288
 289struct iwl_alive_data {
 290        bool valid;
 291        u8 subtype;
 292};
 293
 294static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
 295                         struct iwl_rx_packet *pkt, void *data)
 296{
 297        struct iwl_priv *priv =
 298                container_of(notif_wait, struct iwl_priv, notif_wait);
 299        struct iwl_alive_data *alive_data = data;
 300        struct iwl_alive_resp *palive;
 301
 302        palive = (void *)pkt->data;
 303
 304        IWL_DEBUG_FW(priv, "Alive ucode status 0x%08X revision "
 305                       "0x%01X 0x%01X\n",
 306                       palive->is_valid, palive->ver_type,
 307                       palive->ver_subtype);
 308
 309        priv->device_pointers.error_event_table =
 310                le32_to_cpu(palive->error_event_table_ptr);
 311        priv->device_pointers.log_event_table =
 312                le32_to_cpu(palive->log_event_table_ptr);
 313
 314        alive_data->subtype = palive->ver_subtype;
 315        alive_data->valid = palive->is_valid == UCODE_VALID_OK;
 316
 317        return true;
 318}
 319
 320#define UCODE_ALIVE_TIMEOUT     HZ
 321#define UCODE_CALIB_TIMEOUT     (2*HZ)
 322
 323int iwl_load_ucode_wait_alive(struct iwl_priv *priv,
 324                                 enum iwl_ucode_type ucode_type)
 325{
 326        struct iwl_notification_wait alive_wait;
 327        struct iwl_alive_data alive_data;
 328        const struct fw_img *fw;
 329        int ret;
 330        enum iwl_ucode_type old_type;
 331        static const u8 alive_cmd[] = { REPLY_ALIVE };
 332
 333        old_type = priv->cur_ucode;
 334        priv->cur_ucode = ucode_type;
 335        fw = iwl_get_ucode_image(priv, ucode_type);
 336
 337        priv->ucode_loaded = false;
 338
 339        if (!fw)
 340                return -EINVAL;
 341
 342        iwl_init_notification_wait(&priv->notif_wait, &alive_wait,
 343                                   alive_cmd, ARRAY_SIZE(alive_cmd),
 344                                   iwl_alive_fn, &alive_data);
 345
 346        ret = iwl_trans_start_fw(priv->trans, fw, false);
 347        if (ret) {
 348                priv->cur_ucode = old_type;
 349                iwl_remove_notification(&priv->notif_wait, &alive_wait);
 350                return ret;
 351        }
 352
 353        /*
 354         * Some things may run in the background now, but we
 355         * just wait for the ALIVE notification here.
 356         */
 357        ret = iwl_wait_notification(&priv->notif_wait, &alive_wait,
 358                                        UCODE_ALIVE_TIMEOUT);
 359        if (ret) {
 360                priv->cur_ucode = old_type;
 361                return ret;
 362        }
 363
 364        if (!alive_data.valid) {
 365                IWL_ERR(priv, "Loaded ucode is not valid!\n");
 366                priv->cur_ucode = old_type;
 367                return -EIO;
 368        }
 369
 370        priv->ucode_loaded = true;
 371
 372        if (ucode_type != IWL_UCODE_WOWLAN) {
 373                /* delay a bit to give rfkill time to run */
 374                msleep(5);
 375        }
 376
 377        ret = iwl_alive_notify(priv);
 378        if (ret) {
 379                IWL_WARN(priv,
 380                        "Could not complete ALIVE transition: %d\n", ret);
 381                priv->cur_ucode = old_type;
 382                return ret;
 383        }
 384
 385        return 0;
 386}
 387
 388static bool iwlagn_wait_calib(struct iwl_notif_wait_data *notif_wait,
 389                              struct iwl_rx_packet *pkt, void *data)
 390{
 391        struct iwl_priv *priv = data;
 392        struct iwl_calib_hdr *hdr;
 393        int len;
 394
 395        if (pkt->hdr.cmd != CALIBRATION_RES_NOTIFICATION) {
 396                WARN_ON(pkt->hdr.cmd != CALIBRATION_COMPLETE_NOTIFICATION);
 397                return true;
 398        }
 399
 400        hdr = (struct iwl_calib_hdr *)pkt->data;
 401        len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
 402
 403        /* reduce the size by the length field itself */
 404        len -= sizeof(__le32);
 405
 406        if (iwl_calib_set(priv, hdr, len))
 407                IWL_ERR(priv, "Failed to record calibration data %d\n",
 408                        hdr->op_code);
 409
 410        return false;
 411}
 412
 413int iwl_run_init_ucode(struct iwl_priv *priv)
 414{
 415        struct iwl_notification_wait calib_wait;
 416        static const u8 calib_complete[] = {
 417                CALIBRATION_RES_NOTIFICATION,
 418                CALIBRATION_COMPLETE_NOTIFICATION
 419        };
 420        int ret;
 421
 422        lockdep_assert_held(&priv->mutex);
 423
 424        /* No init ucode required? Curious, but maybe ok */
 425        if (!priv->fw->img[IWL_UCODE_INIT].sec[0].len)
 426                return 0;
 427
 428        if (priv->init_ucode_run)
 429                return 0;
 430
 431        iwl_init_notification_wait(&priv->notif_wait, &calib_wait,
 432                                   calib_complete, ARRAY_SIZE(calib_complete),
 433                                   iwlagn_wait_calib, priv);
 434
 435        /* Will also start the device */
 436        ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_INIT);
 437        if (ret)
 438                goto error;
 439
 440        ret = iwl_init_alive_start(priv);
 441        if (ret)
 442                goto error;
 443
 444        /*
 445         * Some things may run in the background now, but we
 446         * just wait for the calibration complete notification.
 447         */
 448        ret = iwl_wait_notification(&priv->notif_wait, &calib_wait,
 449                                        UCODE_CALIB_TIMEOUT);
 450        if (!ret)
 451                priv->init_ucode_run = true;
 452
 453        goto out;
 454
 455 error:
 456        iwl_remove_notification(&priv->notif_wait, &calib_wait);
 457 out:
 458        /* Whatever happened, stop the device */
 459        iwl_trans_stop_device(priv->trans);
 460        priv->ucode_loaded = false;
 461
 462        return ret;
 463}
 464