drivers/net/wireless/intel/iwlwifi/mvm/ops.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
  24  *
  25  * The full GNU General Public License is included in this distribution
  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <linuxwifi@intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  36  * Copyright(c) 2016 Intel Deutschland GmbH
  37  * All rights reserved.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  *
  43  *  * Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  *  * Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in
  47  *    the documentation and/or other materials provided with the
  48  *    distribution.
  49  *  * Neither the name Intel Corporation nor the names of its
  50  *    contributors may be used to endorse or promote products derived
  51  *    from this software without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  54  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  55  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  56  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  57  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  58  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  59  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  60  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  61  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  63  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  64  *
  65  *****************************************************************************/
  66 #include <linux/module.h>
  67 #include <linux/vmalloc.h>
  68 #include <net/mac80211.h>
  69
  70 #include "iwl-notif-wait.h"
  71 #include "iwl-trans.h"
  72 #include "iwl-op-mode.h"
  73 #include "iwl-fw.h"
  74 #include "iwl-debug.h"
  75 #include "iwl-drv.h"
  76 #include "iwl-modparams.h"
  77 #include "mvm.h"
  78 #include "iwl-phy-db.h"
  79 #include "iwl-eeprom-parse.h"
  80 #include "iwl-csr.h"
  81 #include "iwl-io.h"
  82 #include "iwl-prph.h"
  83 #include "rs.h"
  84 #include "fw-api-scan.h"
  85 #include "time-event.h"
  86 #include "fw-dbg.h"
  87 #include "fw-api.h"
  88 #include "fw-api-scan.h"
  89
  90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  91 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  93 MODULE_LICENSE("GPL");
  94
  95 static const struct iwl_op_mode_ops iwl_mvm_ops;
  96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  97
  98 struct iwl_mvm_mod_params iwlmvm_mod_params = {
  99         .power_scheme = IWL_POWER_SCHEME_BPS,
 100         .tfd_q_hang_detect = true
 101         /* rest of fields are 0 by default */
 102 };
 103
 104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
 105 MODULE_PARM_DESC(init_dbg,
 106                  "set to true to debug an ASSERT in INIT fw (default: false");
 107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
 108 MODULE_PARM_DESC(power_scheme,
 109                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 111                    bool, S_IRUGO);
 112 MODULE_PARM_DESC(tfd_q_hang_detect,
 113                  "TFD queues hang detection (default: true");
 114
 115 /*
 116  * module init and exit functions
 117  */
 118 static int __init iwl_mvm_init(void)
 119 {
 120         int ret;
 121
 122         ret = iwl_mvm_rate_control_register();
 123         if (ret) {
 124                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 125                 return ret;
 126         }
 127
 128         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 129
 130         if (ret) {
 131                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 132                 iwl_mvm_rate_control_unregister();
 133         }
 134
 135         return ret;
 136 }
 137 module_init(iwl_mvm_init);
 138
 139 static void __exit iwl_mvm_exit(void)
 140 {
 141         iwl_opmode_deregister("iwlmvm");
 142         iwl_mvm_rate_control_unregister();
 143 }
 144 module_exit(iwl_mvm_exit);
 145
 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 147 {
 148         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 149         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 150         u32 reg_val = 0;
 151         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 152
 153         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 154                          FW_PHY_CFG_RADIO_TYPE_POS;
 155         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 156                          FW_PHY_CFG_RADIO_STEP_POS;
 157         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 158                          FW_PHY_CFG_RADIO_DASH_POS;
 159
 160         /* SKU control */
 161         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 162                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 163         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 164                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 165
 166         /* radio configuration */
 167         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 168         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 169         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 170
 171         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 172                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 173
 174         /*
 175          * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
 176          * shouldn't be set to any non-zero value. The same is supposed to be
 177          * true of the other HW, but unsetting them (such as the 7260) causes
 178          * automatic tests to fail on seemingly unrelated errors. Need to
 179          * further investigate this, but for now we'll separate cases.
 180          */
 181         if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
 182                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 183
 184         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 185                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 186                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 187                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 190                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 191                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 192                                 reg_val);
 193
 194         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 195                        radio_cfg_step, radio_cfg_dash);
 196
 197         /*
 198          * W/A : NIC is stuck in a reset state after Early PCIe power off
 199          * (PCIe power is lost before PERST# is asserted), causing ME FW
 200          * to lose ownership and not being able to obtain it back.
 201          */
 202         if (!mvm->trans->cfg->apmg_not_supported)
 203                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 204                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 205                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 206 }
 207
 208 struct iwl_rx_handlers {
 209         u16 cmd_id;
 210         bool async;
 211         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 212 };
 213
 214 #define RX_HANDLER(_cmd_id, _fn, _async)        \
 215         { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
 216 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _async) \
 217         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .async = _async }
 218
 219 /*
 220  * Handlers for fw notifications
 221  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 222  * This list should be in order of frequency for performance purposes.
 223  *
 224  * The handler can be SYNC - this means that it will be called in the Rx path
 225  * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
 226  * only in this case!), it should be set as ASYNC. In that case, it will be
 227  * called from a worker with mvm->mutex held.
 228  */
 229 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 230         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
 231         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
 232
 233         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
 234         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true),
 235         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
 236         RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
 237                    iwl_mvm_rx_ant_coupling_notif, true),
 238
 239         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
 240         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, true),
 241
 242         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
 243
 244         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 245                    iwl_mvm_rx_lmac_scan_iter_complete_notif, false),
 246         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 247                    iwl_mvm_rx_lmac_scan_complete_notif, true),
 248         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 249                    false),
 250         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 251                    true),
 252         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 253                    iwl_mvm_rx_umac_scan_iter_complete_notif, false),
 254
 255         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
 256
 257         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 258                    false),
 259
 260         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
 261         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 262                    iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
 263         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true),
 264         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 265                        iwl_mvm_temp_notif, true),
 266
 267         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 268                    true),
 269         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, false),
 270         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, true),
 271         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 272                        iwl_mvm_rx_stored_beacon_notif, false),
 273
 274 };
 275 #undef RX_HANDLER
 276 #undef RX_HANDLER_GRP
 277
 278 /* Please keep this array *SORTED* by hex value.
 279  * Access is done through binary search
 280  */
 281 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 282         HCMD_NAME(MVM_ALIVE),
 283         HCMD_NAME(REPLY_ERROR),
 284         HCMD_NAME(ECHO_CMD),
 285         HCMD_NAME(INIT_COMPLETE_NOTIF),
 286         HCMD_NAME(PHY_CONTEXT_CMD),
 287         HCMD_NAME(DBG_CFG),
 288         HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION),
 289         HCMD_NAME(SCAN_CFG_CMD),
 290         HCMD_NAME(SCAN_REQ_UMAC),
 291         HCMD_NAME(SCAN_ABORT_UMAC),
 292         HCMD_NAME(SCAN_COMPLETE_UMAC),
 293         HCMD_NAME(TOF_CMD),
 294         HCMD_NAME(TOF_NOTIFICATION),
 295         HCMD_NAME(ADD_STA_KEY),
 296         HCMD_NAME(ADD_STA),
 297         HCMD_NAME(REMOVE_STA),
 298         HCMD_NAME(FW_GET_ITEM_CMD),
 299         HCMD_NAME(TX_CMD),
 300         HCMD_NAME(SCD_QUEUE_CFG),
 301         HCMD_NAME(TXPATH_FLUSH),
 302         HCMD_NAME(MGMT_MCAST_KEY),
 303         HCMD_NAME(WEP_KEY),
 304         HCMD_NAME(SHARED_MEM_CFG),
 305         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 306         HCMD_NAME(MAC_CONTEXT_CMD),
 307         HCMD_NAME(TIME_EVENT_CMD),
 308         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 309         HCMD_NAME(BINDING_CONTEXT_CMD),
 310         HCMD_NAME(TIME_QUOTA_CMD),
 311         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 312         HCMD_NAME(LQ_CMD),
 313         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 314         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 315         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 316         HCMD_NAME(HOT_SPOT_CMD),
 317         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 318         HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
 319         HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
 320         HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
 321         HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
 322         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 323         HCMD_NAME(BT_COEX_CI),
 324         HCMD_NAME(PHY_CONFIGURATION_CMD),
 325         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 326         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 327         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 328         HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
 329         HCMD_NAME(POWER_TABLE_CMD),
 330         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 331         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 332         HCMD_NAME(DC2DC_CONFIG_CMD),
 333         HCMD_NAME(NVM_ACCESS_CMD),
 334         HCMD_NAME(SET_CALIB_DEFAULT_CMD),
 335         HCMD_NAME(BEACON_NOTIFICATION),
 336         HCMD_NAME(BEACON_TEMPLATE_CMD),
 337         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 338         HCMD_NAME(BT_CONFIG),
 339         HCMD_NAME(STATISTICS_CMD),
 340         HCMD_NAME(STATISTICS_NOTIFICATION),
 341         HCMD_NAME(EOSP_NOTIFICATION),
 342         HCMD_NAME(REDUCE_TX_POWER_CMD),
 343         HCMD_NAME(CARD_STATE_CMD),
 344         HCMD_NAME(CARD_STATE_NOTIFICATION),
 345         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 346         HCMD_NAME(TDLS_CONFIG_CMD),
 347         HCMD_NAME(MAC_PM_POWER_TABLE),
 348         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 349         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 350         HCMD_NAME(RSS_CONFIG_CMD),
 351         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 352         HCMD_NAME(REPLY_RX_PHY_CMD),
 353         HCMD_NAME(REPLY_RX_MPDU_CMD),
 354         HCMD_NAME(BA_NOTIF),
 355         HCMD_NAME(MCC_UPDATE_CMD),
 356         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 357         HCMD_NAME(MARKER_CMD),
 358         HCMD_NAME(BT_COEX_PRIO_TABLE),
 359         HCMD_NAME(BT_COEX_PROT_ENV),
 360         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 361         HCMD_NAME(BCAST_FILTER_CMD),
 362         HCMD_NAME(MCAST_FILTER_CMD),
 363         HCMD_NAME(REPLY_SF_CFG_CMD),
 364         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 365         HCMD_NAME(D3_CONFIG_CMD),
 366         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 367         HCMD_NAME(OFFLOADS_QUERY_CMD),
 368         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 369         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 370         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
 371         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 372         HCMD_NAME(WOWLAN_PATTERNS),
 373         HCMD_NAME(WOWLAN_CONFIGURATION),
 374         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 375         HCMD_NAME(WOWLAN_TKIP_PARAM),
 376         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 377         HCMD_NAME(WOWLAN_GET_STATUSES),
 378         HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
 379         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 380         HCMD_NAME(D0I3_END_CMD),
 381         HCMD_NAME(LTR_CONFIG),
 382         HCMD_NAME(REPLY_DEBUG_CMD),
 383 };
 384
 385 /* Please keep this array *SORTED* by hex value.
 386  * Access is done through binary search
 387  */
 388 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 389         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 390         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 391 };
 392
 393 /* Please keep this array *SORTED* by hex value.
 394  * Access is done through binary search
 395  */
 396 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 397         HCMD_NAME(STORED_BEACON_NTF),
 398 };
 399
 400 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 401         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 402         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 403         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 404         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 405 };
 406
 407 /* this forward declaration can avoid to export the function */
 408 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 409 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 410
 411 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
 412 {
 413         const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
 414
 415         if (!pwr_tx_backoff)
 416                 return 0;
 417
 418         while (pwr_tx_backoff->pwr) {
 419                 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
 420                         return pwr_tx_backoff->backoff;
 421
 422                 pwr_tx_backoff++;
 423         }
 424
 425         return 0;
 426 }
 427
 428 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
 429
 430 static struct iwl_op_mode *
 431 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 432                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 433 {
 434         struct ieee80211_hw *hw;
 435         struct iwl_op_mode *op_mode;
 436         struct iwl_mvm *mvm;
 437         struct iwl_trans_config trans_cfg = {};
 438         static const u8 no_reclaim_cmds[] = {
 439                 TX_CMD,
 440         };
 441         int err, scan_size;
 442         u32 min_backoff;
 443
 444         /*
 445          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 446          * index all over the driver - check that its value corresponds to the
 447          * array size.
 448          */
 449         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 450
 451         /********************************
 452          * 1. Allocating and configuring HW data
 453          ********************************/
 454         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 455                                 sizeof(struct iwl_mvm),
 456                                 &iwl_mvm_hw_ops);
 457         if (!hw)
 458                 return NULL;
 459
 460         if (cfg->max_rx_agg_size)
 461                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 462
 463         if (cfg->max_tx_agg_size)
 464                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 465
 466         op_mode = hw->priv;
 467
 468         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 469         mvm->dev = trans->dev;
 470         mvm->trans = trans;
 471         mvm->cfg = cfg;
 472         mvm->fw = fw;
 473         mvm->hw = hw;
 474
 475         if (iwl_mvm_has_new_rx_api(mvm)) {
 476                 op_mode->ops = &iwl_mvm_ops_mq;
 477         } else {
 478                 op_mode->ops = &iwl_mvm_ops;
 479
 480                 if (WARN_ON(trans->num_rx_queues > 1))
 481                         goto out_free;
 482         }
 483
 484         mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
 485
 486         mvm->aux_queue = 15;
 487         mvm->first_agg_queue = 16;
 488         mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
 489         if (mvm->cfg->base_params->num_of_queues == 16) {
 490                 mvm->aux_queue = 11;
 491                 mvm->first_agg_queue = 12;
 492         }
 493         mvm->sf_state = SF_UNINIT;
 494         mvm->cur_ucode = IWL_UCODE_INIT;
 495         mvm->drop_bcn_ap_mode = true;
 496
 497         mutex_init(&mvm->mutex);
 498         mutex_init(&mvm->d0i3_suspend_mutex);
 499         spin_lock_init(&mvm->async_handlers_lock);
 500         INIT_LIST_HEAD(&mvm->time_event_list);
 501         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 502         INIT_LIST_HEAD(&mvm->async_handlers_list);
 503         spin_lock_init(&mvm->time_event_lock);
 504         spin_lock_init(&mvm->queue_info_lock);
 505
 506         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 507         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 508         INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
 509         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 510         INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
 511         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 512
 513         spin_lock_init(&mvm->d0i3_tx_lock);
 514         spin_lock_init(&mvm->refs_lock);
 515         skb_queue_head_init(&mvm->d0i3_tx);
 516         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 517
 518         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 519
 520         /*
 521          * Populate the state variables that the transport layer needs
 522          * to know about.
 523          */
 524         trans_cfg.op_mode = op_mode;
 525         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 526         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 527         switch (iwlwifi_mod_params.amsdu_size) {
 528         case IWL_AMSDU_4K:
 529                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 530                 break;
 531         case IWL_AMSDU_8K:
 532                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 533                 break;
 534         case IWL_AMSDU_12K:
 535                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 536                 break;
 537         default:
 538                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 539                        iwlwifi_mod_params.amsdu_size);
 540                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 541         }
 542         trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
 543                                                IWL_UCODE_TLV_API_WIDE_CMD_HDR);
 544
 545         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
 546                 trans_cfg.bc_table_dword = true;
 547
 548         trans_cfg.command_groups = iwl_mvm_groups;
 549         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 550
 551         trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 552         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 553         trans_cfg.scd_set_active = true;
 554
 555         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 556         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 557
 558         /* Set a short watchdog for the command queue */
 559         trans_cfg.cmd_q_wdg_timeout =
 560                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 561
 562         snprintf(mvm->hw->wiphy->fw_version,
 563                  sizeof(mvm->hw->wiphy->fw_version),
 564                  "%s", fw->fw_version);
 565
 566         /* Configure transport layer */
 567         iwl_trans_configure(mvm->trans, &trans_cfg);
 568
 569         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 570         trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
 571         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 572         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 573         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 574                sizeof(trans->dbg_conf_tlv));
 575         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 576
 577         /* set up notification wait support */
 578         iwl_notification_wait_init(&mvm->notif_wait);
 579
 580         /* Init phy db */
 581         mvm->phy_db = iwl_phy_db_init(trans);
 582         if (!mvm->phy_db) {
 583                 IWL_ERR(mvm, "Cannot init phy_db\n");
 584                 goto out_free;
 585         }
 586
 587         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 588                  mvm->cfg->name, mvm->trans->hw_rev);
 589
 590         min_backoff = calc_min_backoff(trans, cfg);
 591         iwl_mvm_tt_initialize(mvm, min_backoff);
 592
 593         if (iwlwifi_mod_params.nvm_file)
 594                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 595         else
 596                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 597                                  "working without external nvm file\n");
 598
 599         if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
 600                  "not allowing power-up and not having nvm_file\n"))
 601                 goto out_free;
 602
 603         /*
 604          * Even if nvm exists in the nvm_file driver should read again the nvm
 605          * from the nic because there might be entries that exist in the OTP
 606          * and not in the file.
 607          * for nics with no_power_up_nic_in_init: rely completley on nvm_file
 608          */
 609         if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
 610                 err = iwl_nvm_init(mvm, false);
 611                 if (err)
 612                         goto out_free;
 613         } else {
 614                 err = iwl_trans_start_hw(mvm->trans);
 615                 if (err)
 616                         goto out_free;
 617
 618                 mutex_lock(&mvm->mutex);
 619                 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 620                 err = iwl_run_init_mvm_ucode(mvm, true);
 621                 if (!err || !iwlmvm_mod_params.init_dbg)
 622                         iwl_trans_stop_device(trans);
 623                 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 624                 mutex_unlock(&mvm->mutex);
 625                 /* returns 0 if successful, 1 if success but in rfkill */
 626                 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
 627                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 628                         goto out_free;
 629                 }
 630         }
 631
 632         scan_size = iwl_mvm_scan_size(mvm);
 633
 634         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 635         if (!mvm->scan_cmd)
 636                 goto out_free;
 637
 638         /* Set EBS as successful as long as not stated otherwise by the FW. */
 639         mvm->last_ebs_successful = true;
 640
 641         err = iwl_mvm_mac_setup_register(mvm);
 642         if (err)
 643                 goto out_free;
 644
 645         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 646         if (err)
 647                 goto out_unregister;
 648
 649         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 650
 651         /* rpm starts with a taken reference, we can release it now */
 652         iwl_trans_unref(mvm->trans);
 653
 654         iwl_mvm_tof_init(mvm);
 655
 656         /* init RSS hash key */
 657         get_random_bytes(mvm->secret_key, ARRAY_SIZE(mvm->secret_key));
 658
 659         return op_mode;
 660
 661  out_unregister:
 662         ieee80211_unregister_hw(mvm->hw);
 663         iwl_mvm_leds_exit(mvm);
 664  out_free:
 665         flush_delayed_work(&mvm->fw_dump_wk);
 666         iwl_phy_db_free(mvm->phy_db);
 667         kfree(mvm->scan_cmd);
 668         if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
 669                 iwl_trans_op_mode_leave(trans);
 670         ieee80211_free_hw(mvm->hw);
 671         return NULL;
 672 }
 673
 674 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 675 {
 676         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 677         int i;
 678
 679         iwl_mvm_leds_exit(mvm);
 680
 681         iwl_mvm_tt_exit(mvm);
 682
 683         ieee80211_unregister_hw(mvm->hw);
 684
 685         kfree(mvm->scan_cmd);
 686         kfree(mvm->mcast_filter_cmd);
 687         mvm->mcast_filter_cmd = NULL;
 688
 689 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 690         kfree(mvm->d3_resume_sram);
 691 #endif
 692
 693         iwl_trans_op_mode_leave(mvm->trans);
 694
 695         iwl_phy_db_free(mvm->phy_db);
 696         mvm->phy_db = NULL;
 697
 698         iwl_free_nvm_data(mvm->nvm_data);
 699         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 700                 kfree(mvm->nvm_sections[i].data);
 701
 702         iwl_mvm_tof_clean(mvm);
 703
 704         ieee80211_free_hw(mvm->hw);
 705 }
 706
 707 struct iwl_async_handler_entry {
 708         struct list_head list;
 709         struct iwl_rx_cmd_buffer rxb;
 710         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 711 };
 712
 713 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 714 {
 715         struct iwl_async_handler_entry *entry, *tmp;
 716
 717         spin_lock_bh(&mvm->async_handlers_lock);
 718         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 719                 iwl_free_rxb(&entry->rxb);
 720                 list_del(&entry->list);
 721                 kfree(entry);
 722         }
 723         spin_unlock_bh(&mvm->async_handlers_lock);
 724 }
 725
 726 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 727 {
 728         struct iwl_mvm *mvm =
 729                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 730         struct iwl_async_handler_entry *entry, *tmp;
 731         struct list_head local_list;
 732
 733         INIT_LIST_HEAD(&local_list);
 734
 735         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 736         mutex_lock(&mvm->mutex);
 737
 738         /*
 739          * Sync with Rx path with a lock. Remove all the entries from this list,
 740          * add them to a local one (lock free), and then handle them.
 741          */
 742         spin_lock_bh(&mvm->async_handlers_lock);
 743         list_splice_init(&mvm->async_handlers_list, &local_list);
 744         spin_unlock_bh(&mvm->async_handlers_lock);
 745
 746         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 747                 entry->fn(mvm, &entry->rxb);
 748                 iwl_free_rxb(&entry->rxb);
 749                 list_del(&entry->list);
 750                 kfree(entry);
 751         }
 752         mutex_unlock(&mvm->mutex);
 753 }
 754
 755 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 756                                             struct iwl_rx_packet *pkt)
 757 {
 758         struct iwl_fw_dbg_trigger_tlv *trig;
 759         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 760         int i;
 761
 762         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 763                 return;
 764
 765         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 766         cmds_trig = (void *)trig->data;
 767
 768         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 769                 return;
 770
 771         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 772                 /* don't collect on CMD 0 */
 773                 if (!cmds_trig->cmds[i].cmd_id)
 774                         break;
 775
 776                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 777                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 778                         continue;
 779
 780                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 781                                             "CMD 0x%02x.%02x received",
 782                                             pkt->hdr.group_id, pkt->hdr.cmd);
 783                 break;
 784         }
 785 }
 786
 787 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 788                               struct iwl_rx_cmd_buffer *rxb,
 789                               struct iwl_rx_packet *pkt)
 790 {
 791         int i;
 792
 793         iwl_mvm_rx_check_trigger(mvm, pkt);
 794
 795         /*
 796          * Do the notification wait before RX handlers so
 797          * even if the RX handler consumes the RXB we have
 798          * access to it in the notification wait entry.
 799          */
 800         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 801
 802         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 803                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 804                 struct iwl_async_handler_entry *entry;
 805
 806                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 807                         continue;
 808
 809                 if (!rx_h->async) {
 810                         rx_h->fn(mvm, rxb);
 811                         return;
 812                 }
 813
 814                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 815                 /* we can't do much... */
 816                 if (!entry)
 817                         return;
 818
 819                 entry->rxb._page = rxb_steal_page(rxb);
 820                 entry->rxb._offset = rxb->_offset;
 821                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 822                 entry->fn = rx_h->fn;
 823                 spin_lock(&mvm->async_handlers_lock);
 824                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 825                 spin_unlock(&mvm->async_handlers_lock);
 826                 schedule_work(&mvm->async_handlers_wk);
 827                 break;
 828         }
 829 }
 830
 831 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 832                        struct napi_struct *napi,
 833                        struct iwl_rx_cmd_buffer *rxb)
 834 {
 835         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 836         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 837
 838         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 839                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 840         else if (pkt->hdr.cmd == FRAME_RELEASE)
 841                 iwl_mvm_rx_frame_release(mvm, rxb, 0);
 842         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 843                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 844         else
 845                 iwl_mvm_rx_common(mvm, rxb, pkt);
 846 }
 847
 848 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
 849                           struct napi_struct *napi,
 850                           struct iwl_rx_cmd_buffer *rxb)
 851 {
 852         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 853         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 854
 855         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 856                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
 857         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 858                 iwl_mvm_rx_phy_cmd_mq(mvm, rxb);
 859         else
 860                 iwl_mvm_rx_common(mvm, rxb, pkt);
 861 }
 862
 863 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
 864 {
 865         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 866         unsigned long mq;
 867         int q;
 868
 869         spin_lock_bh(&mvm->queue_info_lock);
 870         mq = mvm->queue_info[queue].hw_queue_to_mac80211;
 871         spin_unlock_bh(&mvm->queue_info_lock);
 872
 873         if (WARN_ON_ONCE(!mq))
 874                 return;
 875
 876         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
 877                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
 878                         IWL_DEBUG_TX_QUEUES(mvm,
 879                                             "queue %d (mac80211 %d) already stopped\n",
 880                                             queue, q);
 881                         continue;
 882                 }
 883
 884                 ieee80211_stop_queue(mvm->hw, q);
 885         }
 886 }
 887
 888 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
 889                              const struct iwl_device_cmd *cmd)
 890 {
 891         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 892
 893         /*
 894          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
 895          * commands that need to block the Tx queues.
 896          */
 897         iwl_trans_block_txq_ptrs(mvm->trans, false);
 898 }
 899
 900 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
 901 {
 902         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 903         unsigned long mq;
 904         int q;
 905
 906         spin_lock_bh(&mvm->queue_info_lock);
 907         mq = mvm->queue_info[queue].hw_queue_to_mac80211;
 908         spin_unlock_bh(&mvm->queue_info_lock);
 909
 910         if (WARN_ON_ONCE(!mq))
 911                 return;
 912
 913         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
 914                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
 915                         IWL_DEBUG_TX_QUEUES(mvm,
 916                                             "queue %d (mac80211 %d) still stopped\n",
 917                                             queue, q);
 918                         continue;
 919                 }
 920
 921                 ieee80211_wake_queue(mvm->hw, q);
 922         }
 923 }
 924
 925 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
 926 {
 927         if (state)
 928                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
 929         else
 930                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
 931
 932         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
 933 }
 934
 935 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
 936 {
 937         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 938         bool calibrating = ACCESS_ONCE(mvm->calibrating);
 939
 940         if (state)
 941                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
 942         else
 943                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
 944
 945         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
 946
 947         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
 948         if (calibrating)
 949                 iwl_abort_notification_waits(&mvm->notif_wait);
 950
 951         /*
 952          * Stop the device if we run OPERATIONAL firmware or if we are in the
 953          * middle of the calibrations.
 954          */
 955         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
 956 }
 957
 958 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
 959 {
 960         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 961         struct ieee80211_tx_info *info;
 962
 963         info = IEEE80211_SKB_CB(skb);
 964         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
 965         ieee80211_free_txskb(mvm->hw, skb);
 966 }
 967
 968 struct iwl_mvm_reprobe {
 969         struct device *dev;
 970         struct work_struct work;
 971 };
 972
 973 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
 974 {
 975         struct iwl_mvm_reprobe *reprobe;
 976
 977         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
 978         if (device_reprobe(reprobe->dev))
 979                 dev_err(reprobe->dev, "reprobe failed!\n");
 980         kfree(reprobe);
 981         module_put(THIS_MODULE);
 982 }
 983
 984 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
 985 {
 986         struct iwl_mvm *mvm =
 987                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
 988
 989         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
 990                 return;
 991
 992         mutex_lock(&mvm->mutex);
 993
 994         /* stop recording */
 995         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
 996                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
 997         } else {
 998                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
 999                 /* wait before we collect the data till the DBGC stop */
1000                 udelay(100);
1001         }
1002
1003         iwl_mvm_fw_error_dump(mvm);
1004
1005         /* start recording again if the firmware is not crashed */
1006         WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1007                      mvm->fw->dbg_dest_tlv &&
1008                      iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1009
1010         mutex_unlock(&mvm->mutex);
1011
1012         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1013 }
1014
1015 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1016 {
1017         iwl_abort_notification_waits(&mvm->notif_wait);
1018
1019         /*
1020          * This is a bit racy, but worst case we tell mac80211 about
1021          * a stopped/aborted scan when that was already done which
1022          * is not a problem. It is necessary to abort any os scan
1023          * here because mac80211 requires having the scan cleared
1024          * before restarting.
1025          * We'll reset the scan_status to NONE in restart cleanup in
1026          * the next start() call from mac80211. If restart isn't called
1027          * (no fw restart) scan status will stay busy.
1028          */
1029         iwl_mvm_report_scan_aborted(mvm);
1030
1031         /*
1032          * If we're restarting already, don't cycle restarts.
1033          * If INIT fw asserted, it will likely fail again.
1034          * If WoWLAN fw asserted, don't restart either, mac80211
1035          * can't recover this since we're already half suspended.
1036          */
1037         if (!mvm->restart_fw && fw_error) {
1038                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1039                                             NULL);
1040         } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1041                                     &mvm->status)) {
1042                 struct iwl_mvm_reprobe *reprobe;
1043
1044                 IWL_ERR(mvm,
1045                         "Firmware error during reconfiguration - reprobe!\n");
1046
1047                 /*
1048                  * get a module reference to avoid doing this while unloading
1049                  * anyway and to avoid scheduling a work with code that's
1050                  * being removed.
1051                  */
1052                 if (!try_module_get(THIS_MODULE)) {
1053                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1054                         return;
1055                 }
1056
1057                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1058                 if (!reprobe) {
1059                         module_put(THIS_MODULE);
1060                         return;
1061                 }
1062                 reprobe->dev = mvm->trans->dev;
1063                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1064                 schedule_work(&reprobe->work);
1065         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1066                 /* don't let the transport/FW power down */
1067                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1068
1069                 if (fw_error && mvm->restart_fw > 0)
1070                         mvm->restart_fw--;
1071                 ieee80211_restart_hw(mvm->hw);
1072         }
1073 }
1074
1075 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1076 {
1077         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1078
1079         iwl_mvm_dump_nic_error_log(mvm);
1080
1081         iwl_mvm_nic_restart(mvm, true);
1082 }
1083
1084 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1085 {
1086         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1087
1088         WARN_ON(1);
1089         iwl_mvm_nic_restart(mvm, true);
1090 }
1091
1092 struct iwl_d0i3_iter_data {
1093         struct iwl_mvm *mvm;
1094         struct ieee80211_vif *connected_vif;
1095         u8 ap_sta_id;
1096         u8 vif_count;
1097         u8 offloading_tid;
1098         bool disable_offloading;
1099 };
1100
1101 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1102                                         struct ieee80211_vif *vif,
1103                                         struct iwl_d0i3_iter_data *iter_data)
1104 {
1105         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1106         struct ieee80211_sta *ap_sta;
1107         struct iwl_mvm_sta *mvmsta;
1108         u32 available_tids = 0;
1109         u8 tid;
1110
1111         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1112                     mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1113                 return false;
1114
1115         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
1116         if (IS_ERR_OR_NULL(ap_sta))
1117                 return false;
1118
1119         mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
1120         spin_lock_bh(&mvmsta->lock);
1121         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1122                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1123
1124                 /*
1125                  * in case of pending tx packets, don't use this tid
1126                  * for offloading in order to prevent reuse of the same
1127                  * qos seq counters.
1128                  */
1129                 if (iwl_mvm_tid_queued(tid_data))
1130                         continue;
1131
1132                 if (tid_data->state != IWL_AGG_OFF)
1133                         continue;
1134
1135                 available_tids |= BIT(tid);
1136         }
1137         spin_unlock_bh(&mvmsta->lock);
1138
1139         /*
1140          * disallow protocol offloading if we have no available tid
1141          * (with no pending frames and no active aggregation,
1142          * as we don't handle "holes" properly - the scheduler needs the
1143          * frame's seq number and TFD index to match)
1144          */
1145         if (!available_tids)
1146                 return true;
1147
1148         /* for simplicity, just use the first available tid */
1149         iter_data->offloading_tid = ffs(available_tids) - 1;
1150         return false;
1151 }
1152
1153 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1154                                         struct ieee80211_vif *vif)
1155 {
1156         struct iwl_d0i3_iter_data *data = _data;
1157         struct iwl_mvm *mvm = data->mvm;
1158         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1159         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1160
1161         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1162         if (vif->type != NL80211_IFTYPE_STATION ||
1163             !vif->bss_conf.assoc)
1164                 return;
1165
1166         /*
1167          * in case of pending tx packets or active aggregations,
1168          * avoid offloading features in order to prevent reuse of
1169          * the same qos seq counters.
1170          */
1171         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1172                 data->disable_offloading = true;
1173
1174         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1175         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1176                                    false, flags);
1177
1178         /*
1179          * on init/association, mvm already configures POWER_TABLE_CMD
1180          * and REPLY_MCAST_FILTER_CMD, so currently don't
1181          * reconfigure them (we might want to use different
1182          * params later on, though).
1183          */
1184         data->ap_sta_id = mvmvif->ap_sta_id;
1185         data->vif_count++;
1186
1187         /*
1188          * no new commands can be sent at this stage, so it's safe
1189          * to save the vif pointer during d0i3 entrance.
1190          */
1191         data->connected_vif = vif;
1192 }
1193
1194 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1195                                     struct iwl_wowlan_config_cmd *cmd,
1196                                     struct iwl_d0i3_iter_data *iter_data)
1197 {
1198         struct ieee80211_sta *ap_sta;
1199         struct iwl_mvm_sta *mvm_ap_sta;
1200
1201         if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1202                 return;
1203
1204         rcu_read_lock();
1205
1206         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1207         if (IS_ERR_OR_NULL(ap_sta))
1208                 goto out;
1209
1210         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1211         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1212         cmd->offloading_tid = iter_data->offloading_tid;
1213         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1214                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1215         /*
1216          * The d0i3 uCode takes care of the nonqos counters,
1217          * so configure only the qos seq ones.
1218          */
1219         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1220 out:
1221         rcu_read_unlock();
1222 }
1223
1224 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1225 {
1226         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1227         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1228         int ret;
1229         struct iwl_d0i3_iter_data d0i3_iter_data = {
1230                 .mvm = mvm,
1231         };
1232         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1233                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1234                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1235                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1236         };
1237         struct iwl_d3_manager_config d3_cfg_cmd = {
1238                 .min_sleep_time = cpu_to_le32(1000),
1239                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1240         };
1241
1242         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1243
1244         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1245                 return -EINVAL;
1246
1247         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1248
1249         /*
1250          * iwl_mvm_ref_sync takes a reference before checking the flag.
1251          * so by checking there is no held reference we prevent a state
1252          * in which iwl_mvm_ref_sync continues successfully while we
1253          * configure the firmware to enter d0i3
1254          */
1255         if (iwl_mvm_ref_taken(mvm)) {
1256                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1257                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1258                 wake_up(&mvm->d0i3_exit_waitq);
1259                 return 1;
1260         }
1261
1262         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1263                                                    IEEE80211_IFACE_ITER_NORMAL,
1264                                                    iwl_mvm_enter_d0i3_iterator,
1265                                                    &d0i3_iter_data);
1266         if (d0i3_iter_data.vif_count == 1) {
1267                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1268                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1269         } else {
1270                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1271                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1272                 mvm->d0i3_offloading = false;
1273         }
1274
1275         /* make sure we have no running tx while configuring the seqno */
1276         synchronize_net();
1277
1278         /* Flush the hw queues, in case something got queued during entry */
1279         ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1280         if (ret)
1281                 return ret;
1282
1283         /* configure wowlan configuration only if needed */
1284         if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1285                 /* wake on beacons only if beacon storing isn't supported */
1286                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1287                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1288                         wowlan_config_cmd.wakeup_filter |=
1289                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1290
1291                 iwl_mvm_wowlan_config_key_params(mvm,
1292                                                  d0i3_iter_data.connected_vif,
1293                                                  true, flags);
1294
1295                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1296                                         &d0i3_iter_data);
1297
1298                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1299                                            sizeof(wowlan_config_cmd),
1300                                            &wowlan_config_cmd);
1301                 if (ret)
1302                         return ret;
1303         }
1304
1305         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1306                                     flags | CMD_MAKE_TRANS_IDLE,
1307                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1308 }
1309
1310 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1311                                        struct ieee80211_vif *vif)
1312 {
1313         struct iwl_mvm *mvm = _data;
1314         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1315
1316         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1317         if (vif->type != NL80211_IFTYPE_STATION ||
1318             !vif->bss_conf.assoc)
1319                 return;
1320
1321         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1322 }
1323
1324 struct iwl_mvm_d0i3_exit_work_iter_data {
1325         struct iwl_mvm *mvm;
1326         struct iwl_wowlan_status *status;
1327         u32 wakeup_reasons;
1328 };
1329
1330 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1331                                         struct ieee80211_vif *vif)
1332 {
1333         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1334         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1335         u32 reasons = data->wakeup_reasons;
1336
1337         /* consider only the relevant station interface */
1338         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1339             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1340                 return;
1341
1342         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1343                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1344         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1345                 ieee80211_beacon_loss(vif);
1346         else
1347                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1348 }
1349
1350 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1351 {
1352         struct ieee80211_sta *sta = NULL;
1353         struct iwl_mvm_sta *mvm_ap_sta;
1354         int i;
1355         bool wake_queues = false;
1356
1357         lockdep_assert_held(&mvm->mutex);
1358
1359         spin_lock_bh(&mvm->d0i3_tx_lock);
1360
1361         if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1362                 goto out;
1363
1364         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1365
1366         /* get the sta in order to update seq numbers and re-enqueue skbs */
1367         sta = rcu_dereference_protected(
1368                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1369                         lockdep_is_held(&mvm->mutex));
1370
1371         if (IS_ERR_OR_NULL(sta)) {
1372                 sta = NULL;
1373                 goto out;
1374         }
1375
1376         if (mvm->d0i3_offloading && qos_seq) {
1377                 /* update qos seq numbers if offloading was enabled */
1378                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1379                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1380                         u16 seq = le16_to_cpu(qos_seq[i]);
1381                         /* firmware stores last-used one, we store next one */
1382                         seq += 0x10;
1383                         mvm_ap_sta->tid_data[i].seq_number = seq;
1384                 }
1385         }
1386 out:
1387         /* re-enqueue (or drop) all packets */
1388         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1389                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1390
1391                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1392                         ieee80211_free_txskb(mvm->hw, skb);
1393
1394                 /* if the skb_queue is not empty, we need to wake queues */
1395                 wake_queues = true;
1396         }
1397         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1398         wake_up(&mvm->d0i3_exit_waitq);
1399         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1400         if (wake_queues)
1401                 ieee80211_wake_queues(mvm->hw);
1402
1403         spin_unlock_bh(&mvm->d0i3_tx_lock);
1404 }
1405
1406 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1407 {
1408         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1409         struct iwl_host_cmd get_status_cmd = {
1410                 .id = WOWLAN_GET_STATUSES,
1411                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1412         };
1413         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1414                 .mvm = mvm,
1415         };
1416
1417         struct iwl_wowlan_status *status;
1418         int ret;
1419         u32 wakeup_reasons = 0;
1420         __le16 *qos_seq = NULL;
1421
1422         mutex_lock(&mvm->mutex);
1423         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1424         if (ret)
1425                 goto out;
1426
1427         if (!get_status_cmd.resp_pkt)
1428                 goto out;
1429
1430         status = (void *)get_status_cmd.resp_pkt->data;
1431         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1432         qos_seq = status->qos_seq_ctr;
1433
1434         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1435
1436         iter_data.wakeup_reasons = wakeup_reasons;
1437         iter_data.status = status;
1438         ieee80211_iterate_active_interfaces(mvm->hw,
1439                                             IEEE80211_IFACE_ITER_NORMAL,
1440                                             iwl_mvm_d0i3_exit_work_iter,
1441                                             &iter_data);
1442 out:
1443         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1444
1445         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1446                        wakeup_reasons);
1447
1448         /* qos_seq might point inside resp_pkt, so free it only now */
1449         if (get_status_cmd.resp_pkt)
1450                 iwl_free_resp(&get_status_cmd);
1451
1452         /* the FW might have updated the regdomain */
1453         iwl_mvm_update_changed_regdom(mvm);
1454
1455         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1456         mutex_unlock(&mvm->mutex);
1457 }
1458
1459 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1460 {
1461         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1462                     CMD_WAKE_UP_TRANS;
1463         int ret;
1464
1465         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1466
1467         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1468                 return -EINVAL;
1469
1470         mutex_lock(&mvm->d0i3_suspend_mutex);
1471         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1472                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1473                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1474                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1475                 return 0;
1476         }
1477         mutex_unlock(&mvm->d0i3_suspend_mutex);
1478
1479         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1480         if (ret)
1481                 goto out;
1482
1483         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1484                                                    IEEE80211_IFACE_ITER_NORMAL,
1485                                                    iwl_mvm_exit_d0i3_iterator,
1486                                                    mvm);
1487 out:
1488         schedule_work(&mvm->d0i3_exit_work);
1489         return ret;
1490 }
1491
1492 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1493 {
1494         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1495
1496         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1497         return _iwl_mvm_exit_d0i3(mvm);
1498 }
1499
1500 #define IWL_MVM_COMMON_OPS                                      \
1501         /* these could be differentiated */                     \
1502         .async_cb = iwl_mvm_async_cb,                           \
1503         .queue_full = iwl_mvm_stop_sw_queue,                    \
1504         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1505         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1506         .free_skb = iwl_mvm_free_skb,                           \
1507         .nic_error = iwl_mvm_nic_error,                         \
1508         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1509         .nic_config = iwl_mvm_nic_config,                       \
1510         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1511         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1512         /* as we only register one, these MUST be common! */    \
1513         .start = iwl_op_mode_mvm_start,                         \
1514         .stop = iwl_op_mode_mvm_stop
1515
1516 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1517         IWL_MVM_COMMON_OPS,
1518         .rx = iwl_mvm_rx,
1519 };
1520
1521 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1522                               struct napi_struct *napi,
1523                               struct iwl_rx_cmd_buffer *rxb,
1524                               unsigned int queue)
1525 {
1526         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1527         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1528
1529         if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1530                 iwl_mvm_rx_frame_release(mvm, rxb, queue);
1531         else
1532                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1533 }
1534
1535 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1536         IWL_MVM_COMMON_OPS,
1537         .rx = iwl_mvm_rx_mq,
1538         .rx_rss = iwl_mvm_rx_mq_rss,
1539 };