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  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
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  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
  28  *
  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  38  * All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  *
  44  *  * Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  *  * Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in
  48  *    the documentation and/or other materials provided with the
  49  *    distribution.
  50  *  * Neither the name Intel Corporation nor the names of its
  51  *    contributors may be used to endorse or promote products derived
  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67 #include <linux/module.h>
  68 #include <linux/vmalloc.h>
  69 #include <net/mac80211.h>
  70
  71 #include "fw/notif-wait.h"
  72 #include "iwl-trans.h"
  73 #include "iwl-op-mode.h"
  74 #include "fw/img.h"
  75 #include "iwl-debug.h"
  76 #include "iwl-drv.h"
  77 #include "iwl-modparams.h"
  78 #include "mvm.h"
  79 #include "iwl-phy-db.h"
  80 #include "iwl-eeprom-parse.h"
  81 #include "iwl-csr.h"
  82 #include "iwl-io.h"
  83 #include "iwl-prph.h"
  84 #include "rs.h"
  85 #include "fw/api/scan.h"
  86 #include "time-event.h"
  87 #include "fw-api.h"
  88 #include "fw/api/scan.h"
  89 #include "fw/acpi.h"
  90
  91 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  92 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  93 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  94 MODULE_LICENSE("GPL");
  95
  96 static const struct iwl_op_mode_ops iwl_mvm_ops;
  97 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  98
  99 struct iwl_mvm_mod_params iwlmvm_mod_params = {
 100         .power_scheme = IWL_POWER_SCHEME_BPS,
 101         .tfd_q_hang_detect = true
 102         /* rest of fields are 0 by default */
 103 };
 104
 105 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
 106 MODULE_PARM_DESC(init_dbg,
 107                  "set to true to debug an ASSERT in INIT fw (default: false");
 108 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
 109 MODULE_PARM_DESC(power_scheme,
 110                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 111 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 112                    bool, S_IRUGO);
 113 MODULE_PARM_DESC(tfd_q_hang_detect,
 114                  "TFD queues hang detection (default: true");
 115
 116 /*
 117  * module init and exit functions
 118  */
 119 static int __init iwl_mvm_init(void)
 120 {
 121         int ret;
 122
 123         ret = iwl_mvm_rate_control_register();
 124         if (ret) {
 125                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 126                 return ret;
 127         }
 128
 129         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 130
 131         if (ret) {
 132                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 133                 iwl_mvm_rate_control_unregister();
 134         }
 135
 136         return ret;
 137 }
 138 module_init(iwl_mvm_init);
 139
 140 static void __exit iwl_mvm_exit(void)
 141 {
 142         iwl_opmode_deregister("iwlmvm");
 143         iwl_mvm_rate_control_unregister();
 144 }
 145 module_exit(iwl_mvm_exit);
 146
 147 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 148 {
 149         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 150         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 151         u32 reg_val = 0;
 152         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 153
 154         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 155                          FW_PHY_CFG_RADIO_TYPE_POS;
 156         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 157                          FW_PHY_CFG_RADIO_STEP_POS;
 158         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 159                          FW_PHY_CFG_RADIO_DASH_POS;
 160
 161         /* SKU control */
 162         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 163                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 164         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 165                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 166
 167         /* radio configuration */
 168         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 169         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 170         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 171
 172         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 173                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 174
 175         /*
 176          * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
 177          * sampling, and shouldn't be set to any non-zero value.
 178          * The same is supposed to be true of the other HW, but unsetting
 179          * them (such as the 7260) causes automatic tests to fail on seemingly
 180          * unrelated errors. Need to further investigate this, but for now
 181          * we'll separate cases.
 182          */
 183         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 184                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 185
 186         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 187                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 190                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 191                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 192                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 193                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 194                                 reg_val);
 195
 196         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 197                        radio_cfg_step, radio_cfg_dash);
 198
 199         /*
 200          * W/A : NIC is stuck in a reset state after Early PCIe power off
 201          * (PCIe power is lost before PERST# is asserted), causing ME FW
 202          * to lose ownership and not being able to obtain it back.
 203          */
 204         if (!mvm->trans->cfg->apmg_not_supported)
 205                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 206                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 207                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 208 }
 209
 210 /**
 211  * enum iwl_rx_handler_context context for Rx handler
 212  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 213  *      which can't acquire mvm->mutex.
 214  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 215  *      (and only in this case!), it should be set as ASYNC. In that case,
 216  *      it will be called from a worker with mvm->mutex held.
 217  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 218  *      mutex itself, it will be called from a worker without mvm->mutex held.
 219  */
 220 enum iwl_rx_handler_context {
 221         RX_HANDLER_SYNC,
 222         RX_HANDLER_ASYNC_LOCKED,
 223         RX_HANDLER_ASYNC_UNLOCKED,
 224 };
 225
 226 /**
 227  * struct iwl_rx_handlers handler for FW notification
 228  * @cmd_id: command id
 229  * @context: see &iwl_rx_handler_context
 230  * @fn: the function is called when notification is received
 231  */
 232 struct iwl_rx_handlers {
 233         u16 cmd_id;
 234         enum iwl_rx_handler_context context;
 235         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 236 };
 237
 238 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 239         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 240 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 241         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 242
 243 /*
 244  * Handlers for fw notifications
 245  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 246  * This list should be in order of frequency for performance purposes.
 247  *
 248  * The handler can be one from three contexts, see &iwl_rx_handler_context
 249  */
 250 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 251         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 252         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 253
 254         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 255                    RX_HANDLER_ASYNC_LOCKED),
 256         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 257                    RX_HANDLER_ASYNC_LOCKED),
 258         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 259                    RX_HANDLER_ASYNC_LOCKED),
 260
 261         RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 262                    iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 263
 264         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 265                    RX_HANDLER_SYNC),
 266         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 267                    RX_HANDLER_ASYNC_LOCKED),
 268
 269         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 270
 271         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 272                    iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 273         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 274                    iwl_mvm_rx_lmac_scan_complete_notif,
 275                    RX_HANDLER_ASYNC_LOCKED),
 276         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 277                    RX_HANDLER_SYNC),
 278         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 279                    RX_HANDLER_ASYNC_LOCKED),
 280         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 281                    iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 282
 283         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 284                    RX_HANDLER_SYNC),
 285
 286         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 287                    RX_HANDLER_SYNC),
 288
 289         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 290         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 291                    iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 292         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 293                    RX_HANDLER_ASYNC_LOCKED),
 294         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 295                        iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 296         RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 297                        iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 298
 299         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 300                    RX_HANDLER_ASYNC_LOCKED),
 301         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 302                    RX_HANDLER_SYNC),
 303         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 304                    RX_HANDLER_ASYNC_LOCKED),
 305         RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
 306                        iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
 307         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 308                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 309         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 310                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 311         RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
 312                        iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
 313 };
 314 #undef RX_HANDLER
 315 #undef RX_HANDLER_GRP
 316
 317 /* Please keep this array *SORTED* by hex value.
 318  * Access is done through binary search
 319  */
 320 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 321         HCMD_NAME(MVM_ALIVE),
 322         HCMD_NAME(REPLY_ERROR),
 323         HCMD_NAME(ECHO_CMD),
 324         HCMD_NAME(INIT_COMPLETE_NOTIF),
 325         HCMD_NAME(PHY_CONTEXT_CMD),
 326         HCMD_NAME(DBG_CFG),
 327         HCMD_NAME(SCAN_CFG_CMD),
 328         HCMD_NAME(SCAN_REQ_UMAC),
 329         HCMD_NAME(SCAN_ABORT_UMAC),
 330         HCMD_NAME(SCAN_COMPLETE_UMAC),
 331         HCMD_NAME(TOF_CMD),
 332         HCMD_NAME(TOF_NOTIFICATION),
 333         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 334         HCMD_NAME(ADD_STA_KEY),
 335         HCMD_NAME(ADD_STA),
 336         HCMD_NAME(REMOVE_STA),
 337         HCMD_NAME(FW_GET_ITEM_CMD),
 338         HCMD_NAME(TX_CMD),
 339         HCMD_NAME(SCD_QUEUE_CFG),
 340         HCMD_NAME(TXPATH_FLUSH),
 341         HCMD_NAME(MGMT_MCAST_KEY),
 342         HCMD_NAME(WEP_KEY),
 343         HCMD_NAME(SHARED_MEM_CFG),
 344         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 345         HCMD_NAME(MAC_CONTEXT_CMD),
 346         HCMD_NAME(TIME_EVENT_CMD),
 347         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 348         HCMD_NAME(BINDING_CONTEXT_CMD),
 349         HCMD_NAME(TIME_QUOTA_CMD),
 350         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 351         HCMD_NAME(LEDS_CMD),
 352         HCMD_NAME(LQ_CMD),
 353         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 354         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 355         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 356         HCMD_NAME(HOT_SPOT_CMD),
 357         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 358         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 359         HCMD_NAME(BT_COEX_CI),
 360         HCMD_NAME(PHY_CONFIGURATION_CMD),
 361         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 362         HCMD_NAME(PHY_DB_CMD),
 363         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 364         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 365         HCMD_NAME(POWER_TABLE_CMD),
 366         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 367         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 368         HCMD_NAME(DC2DC_CONFIG_CMD),
 369         HCMD_NAME(NVM_ACCESS_CMD),
 370         HCMD_NAME(BEACON_NOTIFICATION),
 371         HCMD_NAME(BEACON_TEMPLATE_CMD),
 372         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 373         HCMD_NAME(BT_CONFIG),
 374         HCMD_NAME(STATISTICS_CMD),
 375         HCMD_NAME(STATISTICS_NOTIFICATION),
 376         HCMD_NAME(EOSP_NOTIFICATION),
 377         HCMD_NAME(REDUCE_TX_POWER_CMD),
 378         HCMD_NAME(CARD_STATE_NOTIFICATION),
 379         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 380         HCMD_NAME(TDLS_CONFIG_CMD),
 381         HCMD_NAME(MAC_PM_POWER_TABLE),
 382         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 383         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 384         HCMD_NAME(RSS_CONFIG_CMD),
 385         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 386         HCMD_NAME(REPLY_RX_PHY_CMD),
 387         HCMD_NAME(REPLY_RX_MPDU_CMD),
 388         HCMD_NAME(FRAME_RELEASE),
 389         HCMD_NAME(BA_NOTIF),
 390         HCMD_NAME(MCC_UPDATE_CMD),
 391         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 392         HCMD_NAME(MARKER_CMD),
 393         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 394         HCMD_NAME(BCAST_FILTER_CMD),
 395         HCMD_NAME(MCAST_FILTER_CMD),
 396         HCMD_NAME(REPLY_SF_CFG_CMD),
 397         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 398         HCMD_NAME(D3_CONFIG_CMD),
 399         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 400         HCMD_NAME(OFFLOADS_QUERY_CMD),
 401         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 402         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 403         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 404         HCMD_NAME(WOWLAN_PATTERNS),
 405         HCMD_NAME(WOWLAN_CONFIGURATION),
 406         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 407         HCMD_NAME(WOWLAN_TKIP_PARAM),
 408         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 409         HCMD_NAME(WOWLAN_GET_STATUSES),
 410         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 411         HCMD_NAME(D0I3_END_CMD),
 412         HCMD_NAME(LTR_CONFIG),
 413 };
 414
 415 /* Please keep this array *SORTED* by hex value.
 416  * Access is done through binary search
 417  */
 418 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 419         HCMD_NAME(SHARED_MEM_CFG_CMD),
 420         HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 421 };
 422
 423 /* Please keep this array *SORTED* by hex value.
 424  * Access is done through binary search
 425  */
 426 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 427         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 428 };
 429
 430 /* Please keep this array *SORTED* by hex value.
 431  * Access is done through binary search
 432  */
 433 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 434         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 435         HCMD_NAME(CTDP_CONFIG_CMD),
 436         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 437         HCMD_NAME(GEO_TX_POWER_LIMIT),
 438         HCMD_NAME(CT_KILL_NOTIFICATION),
 439         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 440 };
 441
 442 /* Please keep this array *SORTED* by hex value.
 443  * Access is done through binary search
 444  */
 445 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 446         HCMD_NAME(DQA_ENABLE_CMD),
 447         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 448         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 449         HCMD_NAME(STA_PM_NOTIF),
 450         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 451         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 452 };
 453
 454 /* Please keep this array *SORTED* by hex value.
 455  * Access is done through binary search
 456  */
 457 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
 458         HCMD_NAME(MFU_ASSERT_DUMP_NTF),
 459 };
 460
 461 /* Please keep this array *SORTED* by hex value.
 462  * Access is done through binary search
 463  */
 464 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 465         HCMD_NAME(STORED_BEACON_NTF),
 466 };
 467
 468 /* Please keep this array *SORTED* by hex value.
 469  * Access is done through binary search
 470  */
 471 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 472         HCMD_NAME(NVM_ACCESS_COMPLETE),
 473         HCMD_NAME(NVM_GET_INFO),
 474 };
 475
 476 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 477         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 478         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 479         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 480         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 481         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 482         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 483         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 484         [REGULATORY_AND_NVM_GROUP] =
 485                 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 486 };
 487
 488 /* this forward declaration can avoid to export the function */
 489 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 490 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 491
 492 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
 493 {
 494         const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
 495         u64 dflt_pwr_limit;
 496
 497         if (!backoff)
 498                 return 0;
 499
 500         dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
 501
 502         while (backoff->pwr) {
 503                 if (dflt_pwr_limit >= backoff->pwr)
 504                         return backoff->backoff;
 505
 506                 backoff++;
 507         }
 508
 509         return 0;
 510 }
 511
 512 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 513 {
 514         struct iwl_mvm *mvm =
 515                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 516         struct ieee80211_vif *tx_blocked_vif;
 517         struct iwl_mvm_vif *mvmvif;
 518
 519         mutex_lock(&mvm->mutex);
 520
 521         tx_blocked_vif =
 522                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 523                                           lockdep_is_held(&mvm->mutex));
 524
 525         if (!tx_blocked_vif)
 526                 goto unlock;
 527
 528         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 529         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 530         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 531 unlock:
 532         mutex_unlock(&mvm->mutex);
 533 }
 534
 535 static int iwl_mvm_fwrt_dump_start(void *ctx)
 536 {
 537         struct iwl_mvm *mvm = ctx;
 538         int ret;
 539
 540         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 541         if (ret)
 542                 return ret;
 543
 544         mutex_lock(&mvm->mutex);
 545
 546         return 0;
 547 }
 548
 549 static void iwl_mvm_fwrt_dump_end(void *ctx)
 550 {
 551         struct iwl_mvm *mvm = ctx;
 552
 553         mutex_unlock(&mvm->mutex);
 554
 555         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 556 }
 557
 558 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
 559         .dump_start = iwl_mvm_fwrt_dump_start,
 560         .dump_end = iwl_mvm_fwrt_dump_end,
 561 };
 562
 563 static struct iwl_op_mode *
 564 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 565                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 566 {
 567         struct ieee80211_hw *hw;
 568         struct iwl_op_mode *op_mode;
 569         struct iwl_mvm *mvm;
 570         struct iwl_trans_config trans_cfg = {};
 571         static const u8 no_reclaim_cmds[] = {
 572                 TX_CMD,
 573         };
 574         int err, scan_size;
 575         u32 min_backoff;
 576
 577         /*
 578          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 579          * index all over the driver - check that its value corresponds to the
 580          * array size.
 581          */
 582         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 583
 584         /********************************
 585          * 1. Allocating and configuring HW data
 586          ********************************/
 587         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 588                                 sizeof(struct iwl_mvm),
 589                                 &iwl_mvm_hw_ops);
 590         if (!hw)
 591                 return NULL;
 592
 593         if (cfg->max_rx_agg_size)
 594                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 595
 596         if (cfg->max_tx_agg_size)
 597                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 598
 599         op_mode = hw->priv;
 600
 601         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 602         mvm->dev = trans->dev;
 603         mvm->trans = trans;
 604         mvm->cfg = cfg;
 605         mvm->fw = fw;
 606         mvm->hw = hw;
 607
 608         iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm);
 609
 610         mvm->init_status = 0;
 611
 612         if (iwl_mvm_has_new_rx_api(mvm)) {
 613                 op_mode->ops = &iwl_mvm_ops_mq;
 614                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 615         } else {
 616                 op_mode->ops = &iwl_mvm_ops;
 617                 trans->rx_mpdu_cmd_hdr_size =
 618                         sizeof(struct iwl_rx_mpdu_res_start);
 619
 620                 if (WARN_ON(trans->num_rx_queues > 1))
 621                         goto out_free;
 622         }
 623
 624         mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 625
 626         mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 627         mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 628         mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 629
 630         mvm->sf_state = SF_UNINIT;
 631         if (iwl_mvm_has_unified_ucode(mvm))
 632                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
 633         else
 634                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
 635         mvm->drop_bcn_ap_mode = true;
 636
 637         mutex_init(&mvm->mutex);
 638         mutex_init(&mvm->d0i3_suspend_mutex);
 639         spin_lock_init(&mvm->async_handlers_lock);
 640         INIT_LIST_HEAD(&mvm->time_event_list);
 641         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 642         INIT_LIST_HEAD(&mvm->async_handlers_list);
 643         spin_lock_init(&mvm->time_event_lock);
 644         spin_lock_init(&mvm->queue_info_lock);
 645
 646         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 647         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 648         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 649         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 650         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 651         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 652
 653         spin_lock_init(&mvm->d0i3_tx_lock);
 654         spin_lock_init(&mvm->refs_lock);
 655         skb_queue_head_init(&mvm->d0i3_tx);
 656         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 657         init_waitqueue_head(&mvm->rx_sync_waitq);
 658
 659         atomic_set(&mvm->queue_sync_counter, 0);
 660
 661         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 662
 663         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 664
 665         /*
 666          * Populate the state variables that the transport layer needs
 667          * to know about.
 668          */
 669         trans_cfg.op_mode = op_mode;
 670         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 671         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 672         switch (iwlwifi_mod_params.amsdu_size) {
 673         case IWL_AMSDU_DEF:
 674         case IWL_AMSDU_4K:
 675                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 676                 break;
 677         case IWL_AMSDU_8K:
 678                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 679                 break;
 680         case IWL_AMSDU_12K:
 681                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 682                 break;
 683         default:
 684                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 685                        iwlwifi_mod_params.amsdu_size);
 686                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 687         }
 688
 689         /* the hardware splits the A-MSDU */
 690         if (mvm->cfg->mq_rx_supported)
 691                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 692
 693         trans->wide_cmd_header = true;
 694         trans_cfg.bc_table_dword = true;
 695
 696         trans_cfg.command_groups = iwl_mvm_groups;
 697         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 698
 699         trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 700         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 701         trans_cfg.scd_set_active = true;
 702
 703         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 704                                           driver_data[2]);
 705
 706         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 707
 708         /* Set a short watchdog for the command queue */
 709         trans_cfg.cmd_q_wdg_timeout =
 710                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 711
 712         snprintf(mvm->hw->wiphy->fw_version,
 713                  sizeof(mvm->hw->wiphy->fw_version),
 714                  "%s", fw->fw_version);
 715
 716         /* Configure transport layer */
 717         iwl_trans_configure(mvm->trans, &trans_cfg);
 718
 719         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 720         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 721         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 722         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 723                sizeof(trans->dbg_conf_tlv));
 724         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 725
 726         /* set up notification wait support */
 727         iwl_notification_wait_init(&mvm->notif_wait);
 728
 729         /* Init phy db */
 730         mvm->phy_db = iwl_phy_db_init(trans);
 731         if (!mvm->phy_db) {
 732                 IWL_ERR(mvm, "Cannot init phy_db\n");
 733                 goto out_free;
 734         }
 735
 736         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 737                  mvm->cfg->name, mvm->trans->hw_rev);
 738
 739         if (iwlwifi_mod_params.nvm_file)
 740                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 741         else
 742                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 743                                  "working without external nvm file\n");
 744
 745         err = iwl_trans_start_hw(mvm->trans);
 746         if (err)
 747                 goto out_free;
 748
 749         mutex_lock(&mvm->mutex);
 750         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 751         err = iwl_run_init_mvm_ucode(mvm, true);
 752         if (!iwlmvm_mod_params.init_dbg)
 753                 iwl_mvm_stop_device(mvm);
 754         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 755         mutex_unlock(&mvm->mutex);
 756         if (err < 0) {
 757                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 758                 goto out_free;
 759         }
 760
 761         scan_size = iwl_mvm_scan_size(mvm);
 762
 763         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 764         if (!mvm->scan_cmd)
 765                 goto out_free;
 766
 767         /* Set EBS as successful as long as not stated otherwise by the FW. */
 768         mvm->last_ebs_successful = true;
 769
 770         err = iwl_mvm_mac_setup_register(mvm);
 771         if (err)
 772                 goto out_free;
 773         mvm->hw_registered = true;
 774
 775         min_backoff = iwl_mvm_min_backoff(mvm);
 776         iwl_mvm_thermal_initialize(mvm, min_backoff);
 777
 778         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 779         if (err)
 780                 goto out_unregister;
 781
 782         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 783                 memset(&mvm->rx_stats_v3, 0,
 784                        sizeof(struct mvm_statistics_rx_v3));
 785         else
 786                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 787
 788         /* The transport always starts with a taken reference, we can
 789          * release it now if d0i3 is supported */
 790         if (iwl_mvm_is_d0i3_supported(mvm))
 791                 iwl_trans_unref(mvm->trans);
 792
 793         iwl_mvm_tof_init(mvm);
 794
 795         return op_mode;
 796
 797  out_unregister:
 798         if (iwlmvm_mod_params.init_dbg)
 799                 return op_mode;
 800
 801         ieee80211_unregister_hw(mvm->hw);
 802         mvm->hw_registered = false;
 803         iwl_mvm_leds_exit(mvm);
 804         iwl_mvm_thermal_exit(mvm);
 805  out_free:
 806         iwl_fw_flush_dump(&mvm->fwrt);
 807
 808         if (iwlmvm_mod_params.init_dbg)
 809                 return op_mode;
 810         iwl_phy_db_free(mvm->phy_db);
 811         kfree(mvm->scan_cmd);
 812         iwl_trans_op_mode_leave(trans);
 813
 814         ieee80211_free_hw(mvm->hw);
 815         return NULL;
 816 }
 817
 818 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 819 {
 820         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 821         int i;
 822
 823         /* If d0i3 is supported, we have released the reference that
 824          * the transport started with, so we should take it back now
 825          * that we are leaving.
 826          */
 827         if (iwl_mvm_is_d0i3_supported(mvm))
 828                 iwl_trans_ref(mvm->trans);
 829
 830         iwl_mvm_leds_exit(mvm);
 831
 832         iwl_mvm_thermal_exit(mvm);
 833
 834         if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
 835                 ieee80211_unregister_hw(mvm->hw);
 836                 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 837         }
 838
 839         kfree(mvm->scan_cmd);
 840         kfree(mvm->mcast_filter_cmd);
 841         mvm->mcast_filter_cmd = NULL;
 842
 843 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 844         kfree(mvm->d3_resume_sram);
 845 #endif
 846
 847         iwl_trans_op_mode_leave(mvm->trans);
 848
 849         iwl_phy_db_free(mvm->phy_db);
 850         mvm->phy_db = NULL;
 851
 852         kfree(mvm->nvm_data);
 853         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 854                 kfree(mvm->nvm_sections[i].data);
 855
 856         iwl_mvm_tof_clean(mvm);
 857
 858         mutex_destroy(&mvm->mutex);
 859         mutex_destroy(&mvm->d0i3_suspend_mutex);
 860
 861         ieee80211_free_hw(mvm->hw);
 862 }
 863
 864 struct iwl_async_handler_entry {
 865         struct list_head list;
 866         struct iwl_rx_cmd_buffer rxb;
 867         enum iwl_rx_handler_context context;
 868         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 869 };
 870
 871 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 872 {
 873         struct iwl_async_handler_entry *entry, *tmp;
 874
 875         spin_lock_bh(&mvm->async_handlers_lock);
 876         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 877                 iwl_free_rxb(&entry->rxb);
 878                 list_del(&entry->list);
 879                 kfree(entry);
 880         }
 881         spin_unlock_bh(&mvm->async_handlers_lock);
 882 }
 883
 884 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 885 {
 886         struct iwl_mvm *mvm =
 887                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 888         struct iwl_async_handler_entry *entry, *tmp;
 889         LIST_HEAD(local_list);
 890
 891         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 892
 893         /*
 894          * Sync with Rx path with a lock. Remove all the entries from this list,
 895          * add them to a local one (lock free), and then handle them.
 896          */
 897         spin_lock_bh(&mvm->async_handlers_lock);
 898         list_splice_init(&mvm->async_handlers_list, &local_list);
 899         spin_unlock_bh(&mvm->async_handlers_lock);
 900
 901         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 902                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 903                         mutex_lock(&mvm->mutex);
 904                 entry->fn(mvm, &entry->rxb);
 905                 iwl_free_rxb(&entry->rxb);
 906                 list_del(&entry->list);
 907                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 908                         mutex_unlock(&mvm->mutex);
 909                 kfree(entry);
 910         }
 911 }
 912
 913 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 914                                             struct iwl_rx_packet *pkt)
 915 {
 916         struct iwl_fw_dbg_trigger_tlv *trig;
 917         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 918         int i;
 919
 920         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 921                 return;
 922
 923         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 924         cmds_trig = (void *)trig->data;
 925
 926         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
 927                 return;
 928
 929         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 930                 /* don't collect on CMD 0 */
 931                 if (!cmds_trig->cmds[i].cmd_id)
 932                         break;
 933
 934                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 935                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 936                         continue;
 937
 938                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 939                                         "CMD 0x%02x.%02x received",
 940                                         pkt->hdr.group_id, pkt->hdr.cmd);
 941                 break;
 942         }
 943 }
 944
 945 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 946                               struct iwl_rx_cmd_buffer *rxb,
 947                               struct iwl_rx_packet *pkt)
 948 {
 949         int i;
 950
 951         iwl_mvm_rx_check_trigger(mvm, pkt);
 952
 953         /*
 954          * Do the notification wait before RX handlers so
 955          * even if the RX handler consumes the RXB we have
 956          * access to it in the notification wait entry.
 957          */
 958         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 959
 960         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 961                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 962                 struct iwl_async_handler_entry *entry;
 963
 964                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 965                         continue;
 966
 967                 if (rx_h->context == RX_HANDLER_SYNC) {
 968                         rx_h->fn(mvm, rxb);
 969                         return;
 970                 }
 971
 972                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 973                 /* we can't do much... */
 974                 if (!entry)
 975                         return;
 976
 977                 entry->rxb._page = rxb_steal_page(rxb);
 978                 entry->rxb._offset = rxb->_offset;
 979                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 980                 entry->fn = rx_h->fn;
 981                 entry->context = rx_h->context;
 982                 spin_lock(&mvm->async_handlers_lock);
 983                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 984                 spin_unlock(&mvm->async_handlers_lock);
 985                 schedule_work(&mvm->async_handlers_wk);
 986                 return;
 987         }
 988
 989         iwl_fwrt_handle_notification(&mvm->fwrt, rxb);
 990 }
 991
 992 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 993                        struct napi_struct *napi,
 994                        struct iwl_rx_cmd_buffer *rxb)
 995 {
 996         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 997         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 998         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
 999
1000         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1001                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1002         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1003                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1004         else
1005                 iwl_mvm_rx_common(mvm, rxb, pkt);
1006 }
1007
1008 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1009                           struct napi_struct *napi,
1010                           struct iwl_rx_cmd_buffer *rxb)
1011 {
1012         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1013         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1014         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1015
1016         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1017                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1018         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1019                                          RX_QUEUES_NOTIFICATION)))
1020                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1021         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1022                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1023         else
1024                 iwl_mvm_rx_common(mvm, rxb, pkt);
1025 }
1026
1027 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1028 {
1029         int q;
1030
1031         if (WARN_ON_ONCE(!mq))
1032                 return;
1033
1034         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1035                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1036                         IWL_DEBUG_TX_QUEUES(mvm,
1037                                             "mac80211 %d already stopped\n", q);
1038                         continue;
1039                 }
1040
1041                 ieee80211_stop_queue(mvm->hw, q);
1042         }
1043 }
1044
1045 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1046                              const struct iwl_device_cmd *cmd)
1047 {
1048         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1049
1050         /*
1051          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1052          * commands that need to block the Tx queues.
1053          */
1054         iwl_trans_block_txq_ptrs(mvm->trans, false);
1055 }
1056
1057 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1058 {
1059         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1060         unsigned long mq;
1061
1062         spin_lock_bh(&mvm->queue_info_lock);
1063         mq = mvm->hw_queue_to_mac80211[hw_queue];
1064         spin_unlock_bh(&mvm->queue_info_lock);
1065
1066         iwl_mvm_stop_mac_queues(mvm, mq);
1067 }
1068
1069 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1070 {
1071         int q;
1072
1073         if (WARN_ON_ONCE(!mq))
1074                 return;
1075
1076         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1077                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1078                         IWL_DEBUG_TX_QUEUES(mvm,
1079                                             "mac80211 %d still stopped\n", q);
1080                         continue;
1081                 }
1082
1083                 ieee80211_wake_queue(mvm->hw, q);
1084         }
1085 }
1086
1087 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1088 {
1089         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1090         unsigned long mq;
1091
1092         spin_lock_bh(&mvm->queue_info_lock);
1093         mq = mvm->hw_queue_to_mac80211[hw_queue];
1094         spin_unlock_bh(&mvm->queue_info_lock);
1095
1096         iwl_mvm_start_mac_queues(mvm, mq);
1097 }
1098
1099 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1100 {
1101         bool state = iwl_mvm_is_radio_killed(mvm);
1102
1103         if (state)
1104                 wake_up(&mvm->rx_sync_waitq);
1105
1106         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1107 }
1108
1109 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1110 {
1111         if (state)
1112                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1113         else
1114                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1115
1116         iwl_mvm_set_rfkill_state(mvm);
1117 }
1118
1119 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1120 {
1121         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1122         bool calibrating = READ_ONCE(mvm->calibrating);
1123
1124         if (state)
1125                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1126         else
1127                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1128
1129         iwl_mvm_set_rfkill_state(mvm);
1130
1131         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1132         if (calibrating)
1133                 iwl_abort_notification_waits(&mvm->notif_wait);
1134
1135         /*
1136          * Stop the device if we run OPERATIONAL firmware or if we are in the
1137          * middle of the calibrations.
1138          */
1139         return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1140 }
1141
1142 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1143 {
1144         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1145         struct ieee80211_tx_info *info;
1146
1147         info = IEEE80211_SKB_CB(skb);
1148         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1149         ieee80211_free_txskb(mvm->hw, skb);
1150 }
1151
1152 struct iwl_mvm_reprobe {
1153         struct device *dev;
1154         struct work_struct work;
1155 };
1156
1157 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1158 {
1159         struct iwl_mvm_reprobe *reprobe;
1160
1161         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1162         if (device_reprobe(reprobe->dev))
1163                 dev_err(reprobe->dev, "reprobe failed!\n");
1164         kfree(reprobe);
1165         module_put(THIS_MODULE);
1166 }
1167
1168 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1169 {
1170         iwl_abort_notification_waits(&mvm->notif_wait);
1171
1172         /*
1173          * This is a bit racy, but worst case we tell mac80211 about
1174          * a stopped/aborted scan when that was already done which
1175          * is not a problem. It is necessary to abort any os scan
1176          * here because mac80211 requires having the scan cleared
1177          * before restarting.
1178          * We'll reset the scan_status to NONE in restart cleanup in
1179          * the next start() call from mac80211. If restart isn't called
1180          * (no fw restart) scan status will stay busy.
1181          */
1182         iwl_mvm_report_scan_aborted(mvm);
1183
1184         /*
1185          * If we're restarting already, don't cycle restarts.
1186          * If INIT fw asserted, it will likely fail again.
1187          * If WoWLAN fw asserted, don't restart either, mac80211
1188          * can't recover this since we're already half suspended.
1189          */
1190         if (!mvm->fw_restart && fw_error) {
1191                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1192                                         NULL);
1193         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1194                 struct iwl_mvm_reprobe *reprobe;
1195
1196                 IWL_ERR(mvm,
1197                         "Firmware error during reconfiguration - reprobe!\n");
1198
1199                 /*
1200                  * get a module reference to avoid doing this while unloading
1201                  * anyway and to avoid scheduling a work with code that's
1202                  * being removed.
1203                  */
1204                 if (!try_module_get(THIS_MODULE)) {
1205                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1206                         return;
1207                 }
1208
1209                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1210                 if (!reprobe) {
1211                         module_put(THIS_MODULE);
1212                         return;
1213                 }
1214                 reprobe->dev = mvm->trans->dev;
1215                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1216                 schedule_work(&reprobe->work);
1217         } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1218                    mvm->hw_registered) {
1219                 /* don't let the transport/FW power down */
1220                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1221
1222                 if (fw_error && mvm->fw_restart > 0)
1223                         mvm->fw_restart--;
1224                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1225                 ieee80211_restart_hw(mvm->hw);
1226         }
1227 }
1228
1229 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1230 {
1231         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1232
1233         iwl_mvm_dump_nic_error_log(mvm);
1234
1235         iwl_mvm_nic_restart(mvm, true);
1236 }
1237
1238 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1239 {
1240         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1241
1242         WARN_ON(1);
1243         iwl_mvm_nic_restart(mvm, true);
1244 }
1245
1246 struct iwl_d0i3_iter_data {
1247         struct iwl_mvm *mvm;
1248         struct ieee80211_vif *connected_vif;
1249         u8 ap_sta_id;
1250         u8 vif_count;
1251         u8 offloading_tid;
1252         bool disable_offloading;
1253 };
1254
1255 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1256                                         struct ieee80211_vif *vif,
1257                                         struct iwl_d0i3_iter_data *iter_data)
1258 {
1259         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1260         struct iwl_mvm_sta *mvmsta;
1261         u32 available_tids = 0;
1262         u8 tid;
1263
1264         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1265                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1266                 return false;
1267
1268         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1269         if (!mvmsta)
1270                 return false;
1271
1272         spin_lock_bh(&mvmsta->lock);
1273         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1274                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1275
1276                 /*
1277                  * in case of pending tx packets, don't use this tid
1278                  * for offloading in order to prevent reuse of the same
1279                  * qos seq counters.
1280                  */
1281                 if (iwl_mvm_tid_queued(mvm, tid_data))
1282                         continue;
1283
1284                 if (tid_data->state != IWL_AGG_OFF)
1285                         continue;
1286
1287                 available_tids |= BIT(tid);
1288         }
1289         spin_unlock_bh(&mvmsta->lock);
1290
1291         /*
1292          * disallow protocol offloading if we have no available tid
1293          * (with no pending frames and no active aggregation,
1294          * as we don't handle "holes" properly - the scheduler needs the
1295          * frame's seq number and TFD index to match)
1296          */
1297         if (!available_tids)
1298                 return true;
1299
1300         /* for simplicity, just use the first available tid */
1301         iter_data->offloading_tid = ffs(available_tids) - 1;
1302         return false;
1303 }
1304
1305 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1306                                         struct ieee80211_vif *vif)
1307 {
1308         struct iwl_d0i3_iter_data *data = _data;
1309         struct iwl_mvm *mvm = data->mvm;
1310         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1311         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1312
1313         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1314         if (vif->type != NL80211_IFTYPE_STATION ||
1315             !vif->bss_conf.assoc)
1316                 return;
1317
1318         /*
1319          * in case of pending tx packets or active aggregations,
1320          * avoid offloading features in order to prevent reuse of
1321          * the same qos seq counters.
1322          */
1323         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1324                 data->disable_offloading = true;
1325
1326         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1327         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1328                                    false, flags);
1329
1330         /*
1331          * on init/association, mvm already configures POWER_TABLE_CMD
1332          * and REPLY_MCAST_FILTER_CMD, so currently don't
1333          * reconfigure them (we might want to use different
1334          * params later on, though).
1335          */
1336         data->ap_sta_id = mvmvif->ap_sta_id;
1337         data->vif_count++;
1338
1339         /*
1340          * no new commands can be sent at this stage, so it's safe
1341          * to save the vif pointer during d0i3 entrance.
1342          */
1343         data->connected_vif = vif;
1344 }
1345
1346 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1347                                     struct iwl_wowlan_config_cmd *cmd,
1348                                     struct iwl_d0i3_iter_data *iter_data)
1349 {
1350         struct ieee80211_sta *ap_sta;
1351         struct iwl_mvm_sta *mvm_ap_sta;
1352
1353         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1354                 return;
1355
1356         rcu_read_lock();
1357
1358         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1359         if (IS_ERR_OR_NULL(ap_sta))
1360                 goto out;
1361
1362         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1363         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1364         cmd->offloading_tid = iter_data->offloading_tid;
1365         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1366                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1367         /*
1368          * The d0i3 uCode takes care of the nonqos counters,
1369          * so configure only the qos seq ones.
1370          */
1371         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1372 out:
1373         rcu_read_unlock();
1374 }
1375
1376 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1377 {
1378         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1379         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1380         int ret;
1381         struct iwl_d0i3_iter_data d0i3_iter_data = {
1382                 .mvm = mvm,
1383         };
1384         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1385                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1386                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1387                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1388         };
1389         struct iwl_d3_manager_config d3_cfg_cmd = {
1390                 .min_sleep_time = cpu_to_le32(1000),
1391                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1392         };
1393
1394         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1395
1396         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1397                 return -EINVAL;
1398
1399         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1400
1401         /*
1402          * iwl_mvm_ref_sync takes a reference before checking the flag.
1403          * so by checking there is no held reference we prevent a state
1404          * in which iwl_mvm_ref_sync continues successfully while we
1405          * configure the firmware to enter d0i3
1406          */
1407         if (iwl_mvm_ref_taken(mvm)) {
1408                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1409                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1410                 wake_up(&mvm->d0i3_exit_waitq);
1411                 return 1;
1412         }
1413
1414         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1415                                                    IEEE80211_IFACE_ITER_NORMAL,
1416                                                    iwl_mvm_enter_d0i3_iterator,
1417                                                    &d0i3_iter_data);
1418         if (d0i3_iter_data.vif_count == 1) {
1419                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1420                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1421         } else {
1422                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1423                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1424                 mvm->d0i3_offloading = false;
1425         }
1426
1427         /* make sure we have no running tx while configuring the seqno */
1428         synchronize_net();
1429
1430         /* Flush the hw queues, in case something got queued during entry */
1431         /* TODO new tx api */
1432         if (iwl_mvm_has_new_tx_api(mvm)) {
1433                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1434         } else {
1435                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1436                                             flags);
1437                 if (ret)
1438                         return ret;
1439         }
1440
1441         /* configure wowlan configuration only if needed */
1442         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1443                 /* wake on beacons only if beacon storing isn't supported */
1444                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1445                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1446                         wowlan_config_cmd.wakeup_filter |=
1447                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1448
1449                 iwl_mvm_wowlan_config_key_params(mvm,
1450                                                  d0i3_iter_data.connected_vif,
1451                                                  true, flags);
1452
1453                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1454                                         &d0i3_iter_data);
1455
1456                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1457                                            sizeof(wowlan_config_cmd),
1458                                            &wowlan_config_cmd);
1459                 if (ret)
1460                         return ret;
1461         }
1462
1463         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1464                                     flags | CMD_MAKE_TRANS_IDLE,
1465                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1466 }
1467
1468 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1469                                        struct ieee80211_vif *vif)
1470 {
1471         struct iwl_mvm *mvm = _data;
1472         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1473
1474         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1475         if (vif->type != NL80211_IFTYPE_STATION ||
1476             !vif->bss_conf.assoc)
1477                 return;
1478
1479         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1480 }
1481
1482 struct iwl_mvm_d0i3_exit_work_iter_data {
1483         struct iwl_mvm *mvm;
1484         struct iwl_wowlan_status *status;
1485         u32 wakeup_reasons;
1486 };
1487
1488 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1489                                         struct ieee80211_vif *vif)
1490 {
1491         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1492         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1493         u32 reasons = data->wakeup_reasons;
1494
1495         /* consider only the relevant station interface */
1496         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1497             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1498                 return;
1499
1500         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1501                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1502         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1503                 ieee80211_beacon_loss(vif);
1504         else
1505                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1506 }
1507
1508 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1509 {
1510         struct ieee80211_sta *sta = NULL;
1511         struct iwl_mvm_sta *mvm_ap_sta;
1512         int i;
1513         bool wake_queues = false;
1514
1515         lockdep_assert_held(&mvm->mutex);
1516
1517         spin_lock_bh(&mvm->d0i3_tx_lock);
1518
1519         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1520                 goto out;
1521
1522         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1523
1524         /* get the sta in order to update seq numbers and re-enqueue skbs */
1525         sta = rcu_dereference_protected(
1526                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1527                         lockdep_is_held(&mvm->mutex));
1528
1529         if (IS_ERR_OR_NULL(sta)) {
1530                 sta = NULL;
1531                 goto out;
1532         }
1533
1534         if (mvm->d0i3_offloading && qos_seq) {
1535                 /* update qos seq numbers if offloading was enabled */
1536                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1537                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1538                         u16 seq = le16_to_cpu(qos_seq[i]);
1539                         /* firmware stores last-used one, we store next one */
1540                         seq += 0x10;
1541                         mvm_ap_sta->tid_data[i].seq_number = seq;
1542                 }
1543         }
1544 out:
1545         /* re-enqueue (or drop) all packets */
1546         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1547                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1548
1549                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1550                         ieee80211_free_txskb(mvm->hw, skb);
1551
1552                 /* if the skb_queue is not empty, we need to wake queues */
1553                 wake_queues = true;
1554         }
1555         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1556         wake_up(&mvm->d0i3_exit_waitq);
1557         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1558         if (wake_queues)
1559                 ieee80211_wake_queues(mvm->hw);
1560
1561         spin_unlock_bh(&mvm->d0i3_tx_lock);
1562 }
1563
1564 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1565 {
1566         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1567         struct iwl_host_cmd get_status_cmd = {
1568                 .id = WOWLAN_GET_STATUSES,
1569                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1570         };
1571         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1572                 .mvm = mvm,
1573         };
1574
1575         struct iwl_wowlan_status *status;
1576         int ret;
1577         u32 wakeup_reasons = 0;
1578         __le16 *qos_seq = NULL;
1579
1580         mutex_lock(&mvm->mutex);
1581         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1582         if (ret)
1583                 goto out;
1584
1585         status = (void *)get_status_cmd.resp_pkt->data;
1586         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1587         qos_seq = status->qos_seq_ctr;
1588
1589         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1590
1591         iter_data.wakeup_reasons = wakeup_reasons;
1592         iter_data.status = status;
1593         ieee80211_iterate_active_interfaces(mvm->hw,
1594                                             IEEE80211_IFACE_ITER_NORMAL,
1595                                             iwl_mvm_d0i3_exit_work_iter,
1596                                             &iter_data);
1597 out:
1598         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1599
1600         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1601                        wakeup_reasons);
1602
1603         /* qos_seq might point inside resp_pkt, so free it only now */
1604         if (get_status_cmd.resp_pkt)
1605                 iwl_free_resp(&get_status_cmd);
1606
1607         /* the FW might have updated the regdomain */
1608         iwl_mvm_update_changed_regdom(mvm);
1609
1610         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1611         mutex_unlock(&mvm->mutex);
1612 }
1613
1614 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1615 {
1616         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1617                     CMD_WAKE_UP_TRANS;
1618         int ret;
1619
1620         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1621
1622         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1623                 return -EINVAL;
1624
1625         mutex_lock(&mvm->d0i3_suspend_mutex);
1626         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1627                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1628                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1629                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1630                 return 0;
1631         }
1632         mutex_unlock(&mvm->d0i3_suspend_mutex);
1633
1634         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1635         if (ret)
1636                 goto out;
1637
1638         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1639                                                    IEEE80211_IFACE_ITER_NORMAL,
1640                                                    iwl_mvm_exit_d0i3_iterator,
1641                                                    mvm);
1642 out:
1643         schedule_work(&mvm->d0i3_exit_work);
1644         return ret;
1645 }
1646
1647 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1648 {
1649         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1650
1651         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1652         return _iwl_mvm_exit_d0i3(mvm);
1653 }
1654
1655 #define IWL_MVM_COMMON_OPS                                      \
1656         /* these could be differentiated */                     \
1657         .async_cb = iwl_mvm_async_cb,                           \
1658         .queue_full = iwl_mvm_stop_sw_queue,                    \
1659         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1660         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1661         .free_skb = iwl_mvm_free_skb,                           \
1662         .nic_error = iwl_mvm_nic_error,                         \
1663         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1664         .nic_config = iwl_mvm_nic_config,                       \
1665         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1666         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1667         /* as we only register one, these MUST be common! */    \
1668         .start = iwl_op_mode_mvm_start,                         \
1669         .stop = iwl_op_mode_mvm_stop
1670
1671 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1672         IWL_MVM_COMMON_OPS,
1673         .rx = iwl_mvm_rx,
1674 };
1675
1676 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1677                               struct napi_struct *napi,
1678                               struct iwl_rx_cmd_buffer *rxb,
1679                               unsigned int queue)
1680 {
1681         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1682         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1683         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1684
1685         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1686                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1687         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1688                                          RX_QUEUES_NOTIFICATION)))
1689                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1690         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1691                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1692 }
1693
1694 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1695         IWL_MVM_COMMON_OPS,
1696         .rx = iwl_mvm_rx_mq,
1697         .rx_rss = iwl_mvm_rx_mq_rss,
1698 };