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         if (ret)
 131                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 132
 133         return ret;
 134 }
 135 module_init(iwl_mvm_init);
 136
 137 static void __exit iwl_mvm_exit(void)
 138 {
 139         iwl_opmode_deregister("iwlmvm");
 140         iwl_mvm_rate_control_unregister();
 141 }
 142 module_exit(iwl_mvm_exit);
 143
 144 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 145 {
 146         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 147         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 148         u32 reg_val = 0;
 149         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 150
 151         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 152                          FW_PHY_CFG_RADIO_TYPE_POS;
 153         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 154                          FW_PHY_CFG_RADIO_STEP_POS;
 155         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 156                          FW_PHY_CFG_RADIO_DASH_POS;
 157
 158         /* SKU control */
 159         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 160                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 161         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 162                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 163
 164         /* radio configuration */
 165         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 166         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 167         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 168
 169         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 170                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 171
 172         /*
 173          * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
 174          * sampling, and shouldn't be set to any non-zero value.
 175          * The same is supposed to be true of the other HW, but unsetting
 176          * them (such as the 7260) causes automatic tests to fail on seemingly
 177          * unrelated errors. Need to further investigate this, but for now
 178          * we'll separate cases.
 179          */
 180         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 181                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 182
 183         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 184                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 185                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 186                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 187                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 189                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 190                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 191                                 reg_val);
 192
 193         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 194                        radio_cfg_step, radio_cfg_dash);
 195
 196         /*
 197          * W/A : NIC is stuck in a reset state after Early PCIe power off
 198          * (PCIe power is lost before PERST# is asserted), causing ME FW
 199          * to lose ownership and not being able to obtain it back.
 200          */
 201         if (!mvm->trans->cfg->apmg_not_supported)
 202                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 203                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 204                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 205 }
 206
 207 /**
 208  * enum iwl_rx_handler_context context for Rx handler
 209  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 210  *      which can't acquire mvm->mutex.
 211  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 212  *      (and only in this case!), it should be set as ASYNC. In that case,
 213  *      it will be called from a worker with mvm->mutex held.
 214  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 215  *      mutex itself, it will be called from a worker without mvm->mutex held.
 216  */
 217 enum iwl_rx_handler_context {
 218         RX_HANDLER_SYNC,
 219         RX_HANDLER_ASYNC_LOCKED,
 220         RX_HANDLER_ASYNC_UNLOCKED,
 221 };
 222
 223 /**
 224  * struct iwl_rx_handlers handler for FW notification
 225  * @cmd_id: command id
 226  * @context: see &iwl_rx_handler_context
 227  * @fn: the function is called when notification is received
 228  */
 229 struct iwl_rx_handlers {
 230         u16 cmd_id;
 231         enum iwl_rx_handler_context context;
 232         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 233 };
 234
 235 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 236         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 237 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 238         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 239
 240 /*
 241  * Handlers for fw notifications
 242  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 243  * This list should be in order of frequency for performance purposes.
 244  *
 245  * The handler can be one from three contexts, see &iwl_rx_handler_context
 246  */
 247 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 248         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 249         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 250
 251         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 252                    RX_HANDLER_ASYNC_LOCKED),
 253         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 254                    RX_HANDLER_ASYNC_LOCKED),
 255         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 256                    RX_HANDLER_ASYNC_LOCKED),
 257
 258         RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 259                    iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 260
 261         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 262                    RX_HANDLER_SYNC),
 263         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 264                    RX_HANDLER_ASYNC_LOCKED),
 265
 266         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 267
 268         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 269                    iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 270         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 271                    iwl_mvm_rx_lmac_scan_complete_notif,
 272                    RX_HANDLER_ASYNC_LOCKED),
 273         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 274                    RX_HANDLER_SYNC),
 275         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 276                    RX_HANDLER_ASYNC_LOCKED),
 277         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 278                    iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 279
 280         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 281                    RX_HANDLER_SYNC),
 282
 283         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 284                    RX_HANDLER_SYNC),
 285
 286         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 287         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 288                    iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 289         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 290                    RX_HANDLER_ASYNC_LOCKED),
 291         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 292                        iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 293         RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 294                        iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 295
 296         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 297                    RX_HANDLER_ASYNC_LOCKED),
 298         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 299                    RX_HANDLER_SYNC),
 300         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 301                    RX_HANDLER_ASYNC_LOCKED),
 302         RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
 303                        iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
 304         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 305                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 306         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 307                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 308         RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
 309                        iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
 310 };
 311 #undef RX_HANDLER
 312 #undef RX_HANDLER_GRP
 313
 314 /* Please keep this array *SORTED* by hex value.
 315  * Access is done through binary search
 316  */
 317 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 318         HCMD_NAME(MVM_ALIVE),
 319         HCMD_NAME(REPLY_ERROR),
 320         HCMD_NAME(ECHO_CMD),
 321         HCMD_NAME(INIT_COMPLETE_NOTIF),
 322         HCMD_NAME(PHY_CONTEXT_CMD),
 323         HCMD_NAME(DBG_CFG),
 324         HCMD_NAME(SCAN_CFG_CMD),
 325         HCMD_NAME(SCAN_REQ_UMAC),
 326         HCMD_NAME(SCAN_ABORT_UMAC),
 327         HCMD_NAME(SCAN_COMPLETE_UMAC),
 328         HCMD_NAME(TOF_CMD),
 329         HCMD_NAME(TOF_NOTIFICATION),
 330         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 331         HCMD_NAME(ADD_STA_KEY),
 332         HCMD_NAME(ADD_STA),
 333         HCMD_NAME(REMOVE_STA),
 334         HCMD_NAME(FW_GET_ITEM_CMD),
 335         HCMD_NAME(TX_CMD),
 336         HCMD_NAME(SCD_QUEUE_CFG),
 337         HCMD_NAME(TXPATH_FLUSH),
 338         HCMD_NAME(MGMT_MCAST_KEY),
 339         HCMD_NAME(WEP_KEY),
 340         HCMD_NAME(SHARED_MEM_CFG),
 341         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 342         HCMD_NAME(MAC_CONTEXT_CMD),
 343         HCMD_NAME(TIME_EVENT_CMD),
 344         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 345         HCMD_NAME(BINDING_CONTEXT_CMD),
 346         HCMD_NAME(TIME_QUOTA_CMD),
 347         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 348         HCMD_NAME(LEDS_CMD),
 349         HCMD_NAME(LQ_CMD),
 350         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 351         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 352         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 353         HCMD_NAME(HOT_SPOT_CMD),
 354         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 355         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 356         HCMD_NAME(BT_COEX_CI),
 357         HCMD_NAME(PHY_CONFIGURATION_CMD),
 358         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 359         HCMD_NAME(PHY_DB_CMD),
 360         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 361         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 362         HCMD_NAME(POWER_TABLE_CMD),
 363         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 364         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 365         HCMD_NAME(DC2DC_CONFIG_CMD),
 366         HCMD_NAME(NVM_ACCESS_CMD),
 367         HCMD_NAME(BEACON_NOTIFICATION),
 368         HCMD_NAME(BEACON_TEMPLATE_CMD),
 369         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 370         HCMD_NAME(BT_CONFIG),
 371         HCMD_NAME(STATISTICS_CMD),
 372         HCMD_NAME(STATISTICS_NOTIFICATION),
 373         HCMD_NAME(EOSP_NOTIFICATION),
 374         HCMD_NAME(REDUCE_TX_POWER_CMD),
 375         HCMD_NAME(CARD_STATE_NOTIFICATION),
 376         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 377         HCMD_NAME(TDLS_CONFIG_CMD),
 378         HCMD_NAME(MAC_PM_POWER_TABLE),
 379         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 380         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 381         HCMD_NAME(RSS_CONFIG_CMD),
 382         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 383         HCMD_NAME(REPLY_RX_PHY_CMD),
 384         HCMD_NAME(REPLY_RX_MPDU_CMD),
 385         HCMD_NAME(FRAME_RELEASE),
 386         HCMD_NAME(BA_NOTIF),
 387         HCMD_NAME(MCC_UPDATE_CMD),
 388         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 389         HCMD_NAME(MARKER_CMD),
 390         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 391         HCMD_NAME(BCAST_FILTER_CMD),
 392         HCMD_NAME(MCAST_FILTER_CMD),
 393         HCMD_NAME(REPLY_SF_CFG_CMD),
 394         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 395         HCMD_NAME(D3_CONFIG_CMD),
 396         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 397         HCMD_NAME(OFFLOADS_QUERY_CMD),
 398         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 399         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 400         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 401         HCMD_NAME(WOWLAN_PATTERNS),
 402         HCMD_NAME(WOWLAN_CONFIGURATION),
 403         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 404         HCMD_NAME(WOWLAN_TKIP_PARAM),
 405         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 406         HCMD_NAME(WOWLAN_GET_STATUSES),
 407         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 408         HCMD_NAME(D0I3_END_CMD),
 409         HCMD_NAME(LTR_CONFIG),
 410 };
 411
 412 /* Please keep this array *SORTED* by hex value.
 413  * Access is done through binary search
 414  */
 415 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 416         HCMD_NAME(SHARED_MEM_CFG_CMD),
 417         HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 418 };
 419
 420 /* Please keep this array *SORTED* by hex value.
 421  * Access is done through binary search
 422  */
 423 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 424         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 425 };
 426
 427 /* Please keep this array *SORTED* by hex value.
 428  * Access is done through binary search
 429  */
 430 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 431         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 432         HCMD_NAME(CTDP_CONFIG_CMD),
 433         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 434         HCMD_NAME(GEO_TX_POWER_LIMIT),
 435         HCMD_NAME(CT_KILL_NOTIFICATION),
 436         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 437 };
 438
 439 /* Please keep this array *SORTED* by hex value.
 440  * Access is done through binary search
 441  */
 442 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 443         HCMD_NAME(DQA_ENABLE_CMD),
 444         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 445         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 446         HCMD_NAME(STA_PM_NOTIF),
 447         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 448         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 449 };
 450
 451 /* Please keep this array *SORTED* by hex value.
 452  * Access is done through binary search
 453  */
 454 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
 455         HCMD_NAME(MFU_ASSERT_DUMP_NTF),
 456 };
 457
 458 /* Please keep this array *SORTED* by hex value.
 459  * Access is done through binary search
 460  */
 461 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 462         HCMD_NAME(STORED_BEACON_NTF),
 463 };
 464
 465 /* Please keep this array *SORTED* by hex value.
 466  * Access is done through binary search
 467  */
 468 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 469         HCMD_NAME(NVM_ACCESS_COMPLETE),
 470         HCMD_NAME(NVM_GET_INFO),
 471 };
 472
 473 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 474         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 475         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 476         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 477         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 478         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 479         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 480         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 481         [REGULATORY_AND_NVM_GROUP] =
 482                 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 483 };
 484
 485 /* this forward declaration can avoid to export the function */
 486 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 487 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 488
 489 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
 490 {
 491         const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
 492         u64 dflt_pwr_limit;
 493
 494         if (!backoff)
 495                 return 0;
 496
 497         dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
 498
 499         while (backoff->pwr) {
 500                 if (dflt_pwr_limit >= backoff->pwr)
 501                         return backoff->backoff;
 502
 503                 backoff++;
 504         }
 505
 506         return 0;
 507 }
 508
 509 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 510 {
 511         struct iwl_mvm *mvm =
 512                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 513         struct ieee80211_vif *tx_blocked_vif;
 514         struct iwl_mvm_vif *mvmvif;
 515
 516         mutex_lock(&mvm->mutex);
 517
 518         tx_blocked_vif =
 519                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 520                                           lockdep_is_held(&mvm->mutex));
 521
 522         if (!tx_blocked_vif)
 523                 goto unlock;
 524
 525         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 526         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 527         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 528 unlock:
 529         mutex_unlock(&mvm->mutex);
 530 }
 531
 532 static int iwl_mvm_fwrt_dump_start(void *ctx)
 533 {
 534         struct iwl_mvm *mvm = ctx;
 535         int ret;
 536
 537         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 538         if (ret)
 539                 return ret;
 540
 541         mutex_lock(&mvm->mutex);
 542
 543         return 0;
 544 }
 545
 546 static void iwl_mvm_fwrt_dump_end(void *ctx)
 547 {
 548         struct iwl_mvm *mvm = ctx;
 549
 550         mutex_unlock(&mvm->mutex);
 551
 552         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 553 }
 554
 555 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
 556         .dump_start = iwl_mvm_fwrt_dump_start,
 557         .dump_end = iwl_mvm_fwrt_dump_end,
 558 };
 559
 560 static struct iwl_op_mode *
 561 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 562                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 563 {
 564         struct ieee80211_hw *hw;
 565         struct iwl_op_mode *op_mode;
 566         struct iwl_mvm *mvm;
 567         struct iwl_trans_config trans_cfg = {};
 568         static const u8 no_reclaim_cmds[] = {
 569                 TX_CMD,
 570         };
 571         int err, scan_size;
 572         u32 min_backoff;
 573
 574         /*
 575          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 576          * index all over the driver - check that its value corresponds to the
 577          * array size.
 578          */
 579         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 580
 581         /********************************
 582          * 1. Allocating and configuring HW data
 583          ********************************/
 584         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 585                                 sizeof(struct iwl_mvm),
 586                                 &iwl_mvm_hw_ops);
 587         if (!hw)
 588                 return NULL;
 589
 590         if (cfg->max_rx_agg_size)
 591                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 592
 593         if (cfg->max_tx_agg_size)
 594                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 595
 596         op_mode = hw->priv;
 597
 598         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 599         mvm->dev = trans->dev;
 600         mvm->trans = trans;
 601         mvm->cfg = cfg;
 602         mvm->fw = fw;
 603         mvm->hw = hw;
 604
 605         iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
 606                             dbgfs_dir);
 607
 608         mvm->init_status = 0;
 609
 610         if (iwl_mvm_has_new_rx_api(mvm)) {
 611                 op_mode->ops = &iwl_mvm_ops_mq;
 612                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 613         } else {
 614                 op_mode->ops = &iwl_mvm_ops;
 615                 trans->rx_mpdu_cmd_hdr_size =
 616                         sizeof(struct iwl_rx_mpdu_res_start);
 617
 618                 if (WARN_ON(trans->num_rx_queues > 1))
 619                         goto out_free;
 620         }
 621
 622         mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 623
 624         mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 625         mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
 626         mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 627         mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 628
 629         mvm->sf_state = SF_UNINIT;
 630         if (iwl_mvm_has_unified_ucode(mvm))
 631                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
 632         else
 633                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
 634         mvm->drop_bcn_ap_mode = true;
 635
 636         mutex_init(&mvm->mutex);
 637         mutex_init(&mvm->d0i3_suspend_mutex);
 638         spin_lock_init(&mvm->async_handlers_lock);
 639         INIT_LIST_HEAD(&mvm->time_event_list);
 640         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 641         INIT_LIST_HEAD(&mvm->async_handlers_list);
 642         spin_lock_init(&mvm->time_event_lock);
 643         spin_lock_init(&mvm->queue_info_lock);
 644
 645         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 646         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 647         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 648         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 649         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 650         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 651
 652         spin_lock_init(&mvm->d0i3_tx_lock);
 653         spin_lock_init(&mvm->refs_lock);
 654         skb_queue_head_init(&mvm->d0i3_tx);
 655         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 656         init_waitqueue_head(&mvm->rx_sync_waitq);
 657
 658         atomic_set(&mvm->queue_sync_counter, 0);
 659
 660         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 661
 662         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 663
 664         /*
 665          * Populate the state variables that the transport layer needs
 666          * to know about.
 667          */
 668         trans_cfg.op_mode = op_mode;
 669         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 670         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 671         switch (iwlwifi_mod_params.amsdu_size) {
 672         case IWL_AMSDU_DEF:
 673         case IWL_AMSDU_4K:
 674                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 675                 break;
 676         case IWL_AMSDU_8K:
 677                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 678                 break;
 679         case IWL_AMSDU_12K:
 680                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 681                 break;
 682         default:
 683                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 684                        iwlwifi_mod_params.amsdu_size);
 685                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 686         }
 687
 688         /* the hardware splits the A-MSDU */
 689         if (mvm->cfg->mq_rx_supported)
 690                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 691
 692         trans->wide_cmd_header = true;
 693         trans_cfg.bc_table_dword = true;
 694
 695         trans_cfg.command_groups = iwl_mvm_groups;
 696         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 697
 698         trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 699         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 700         trans_cfg.scd_set_active = true;
 701
 702         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 703                                           driver_data[2]);
 704
 705         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 706
 707         /* Set a short watchdog for the command queue */
 708         trans_cfg.cmd_q_wdg_timeout =
 709                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 710
 711         snprintf(mvm->hw->wiphy->fw_version,
 712                  sizeof(mvm->hw->wiphy->fw_version),
 713                  "%s", fw->fw_version);
 714
 715         /* Configure transport layer */
 716         iwl_trans_configure(mvm->trans, &trans_cfg);
 717
 718         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 719         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 720         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 721         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 722                sizeof(trans->dbg_conf_tlv));
 723         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 724
 725         /* set up notification wait support */
 726         iwl_notification_wait_init(&mvm->notif_wait);
 727
 728         /* Init phy db */
 729         mvm->phy_db = iwl_phy_db_init(trans);
 730         if (!mvm->phy_db) {
 731                 IWL_ERR(mvm, "Cannot init phy_db\n");
 732                 goto out_free;
 733         }
 734
 735         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 736                  mvm->cfg->name, mvm->trans->hw_rev);
 737
 738         if (iwlwifi_mod_params.nvm_file)
 739                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 740         else
 741                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 742                                  "working without external nvm file\n");
 743
 744         err = iwl_trans_start_hw(mvm->trans);
 745         if (err)
 746                 goto out_free;
 747
 748         mutex_lock(&mvm->mutex);
 749         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 750         err = iwl_run_init_mvm_ucode(mvm, true);
 751         if (!iwlmvm_mod_params.init_dbg || !err)
 752                 iwl_mvm_stop_device(mvm);
 753         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 754         mutex_unlock(&mvm->mutex);
 755         if (err < 0) {
 756                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 757                 goto out_free;
 758         }
 759
 760         scan_size = iwl_mvm_scan_size(mvm);
 761
 762         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 763         if (!mvm->scan_cmd)
 764                 goto out_free;
 765
 766         /* Set EBS as successful as long as not stated otherwise by the FW. */
 767         mvm->last_ebs_successful = true;
 768
 769         err = iwl_mvm_mac_setup_register(mvm);
 770         if (err)
 771                 goto out_free;
 772         mvm->hw_registered = true;
 773
 774         min_backoff = iwl_mvm_min_backoff(mvm);
 775         iwl_mvm_thermal_initialize(mvm, min_backoff);
 776
 777         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 778         if (err)
 779                 goto out_unregister;
 780
 781         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 782                 memset(&mvm->rx_stats_v3, 0,
 783                        sizeof(struct mvm_statistics_rx_v3));
 784         else
 785                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 786
 787         /* The transport always starts with a taken reference, we can
 788          * release it now if d0i3 is supported */
 789         if (iwl_mvm_is_d0i3_supported(mvm))
 790                 iwl_trans_unref(mvm->trans);
 791
 792         iwl_mvm_tof_init(mvm);
 793
 794         return op_mode;
 795
 796  out_unregister:
 797         if (iwlmvm_mod_params.init_dbg)
 798                 return op_mode;
 799
 800         ieee80211_unregister_hw(mvm->hw);
 801         mvm->hw_registered = false;
 802         iwl_mvm_leds_exit(mvm);
 803         iwl_mvm_thermal_exit(mvm);
 804  out_free:
 805         iwl_fw_runtime_exit(&mvm->fwrt);
 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         iwl_fw_runtime_exit(&mvm->fwrt);
 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 if (cmd == WIDE_ID(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF))
1024                 iwl_mvm_tlc_update_notif(mvm, pkt);
1025         else
1026                 iwl_mvm_rx_common(mvm, rxb, pkt);
1027 }
1028
1029 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1030 {
1031         int q;
1032
1033         if (WARN_ON_ONCE(!mq))
1034                 return;
1035
1036         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1037                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1038                         IWL_DEBUG_TX_QUEUES(mvm,
1039                                             "mac80211 %d already stopped\n", q);
1040                         continue;
1041                 }
1042
1043                 ieee80211_stop_queue(mvm->hw, q);
1044         }
1045 }
1046
1047 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1048                              const struct iwl_device_cmd *cmd)
1049 {
1050         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1051
1052         /*
1053          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1054          * commands that need to block the Tx queues.
1055          */
1056         iwl_trans_block_txq_ptrs(mvm->trans, false);
1057 }
1058
1059 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1060 {
1061         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1062         unsigned long mq;
1063
1064         spin_lock_bh(&mvm->queue_info_lock);
1065         mq = mvm->hw_queue_to_mac80211[hw_queue];
1066         spin_unlock_bh(&mvm->queue_info_lock);
1067
1068         iwl_mvm_stop_mac_queues(mvm, mq);
1069 }
1070
1071 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1072 {
1073         int q;
1074
1075         if (WARN_ON_ONCE(!mq))
1076                 return;
1077
1078         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1079                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1080                         IWL_DEBUG_TX_QUEUES(mvm,
1081                                             "mac80211 %d still stopped\n", q);
1082                         continue;
1083                 }
1084
1085                 ieee80211_wake_queue(mvm->hw, q);
1086         }
1087 }
1088
1089 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1090 {
1091         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1092         unsigned long mq;
1093
1094         spin_lock_bh(&mvm->queue_info_lock);
1095         mq = mvm->hw_queue_to_mac80211[hw_queue];
1096         spin_unlock_bh(&mvm->queue_info_lock);
1097
1098         iwl_mvm_start_mac_queues(mvm, mq);
1099 }
1100
1101 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1102 {
1103         bool state = iwl_mvm_is_radio_killed(mvm);
1104
1105         if (state)
1106                 wake_up(&mvm->rx_sync_waitq);
1107
1108         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1109 }
1110
1111 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1112 {
1113         if (state)
1114                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1115         else
1116                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1117
1118         iwl_mvm_set_rfkill_state(mvm);
1119 }
1120
1121 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1122 {
1123         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1124         bool calibrating = READ_ONCE(mvm->calibrating);
1125
1126         if (state)
1127                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1128         else
1129                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1130
1131         iwl_mvm_set_rfkill_state(mvm);
1132
1133         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1134         if (calibrating)
1135                 iwl_abort_notification_waits(&mvm->notif_wait);
1136
1137         /*
1138          * Stop the device if we run OPERATIONAL firmware or if we are in the
1139          * middle of the calibrations.
1140          */
1141         return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1142 }
1143
1144 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1145 {
1146         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1147         struct ieee80211_tx_info *info;
1148
1149         info = IEEE80211_SKB_CB(skb);
1150         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1151         ieee80211_free_txskb(mvm->hw, skb);
1152 }
1153
1154 struct iwl_mvm_reprobe {
1155         struct device *dev;
1156         struct work_struct work;
1157 };
1158
1159 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1160 {
1161         struct iwl_mvm_reprobe *reprobe;
1162
1163         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1164         if (device_reprobe(reprobe->dev))
1165                 dev_err(reprobe->dev, "reprobe failed!\n");
1166         kfree(reprobe);
1167         module_put(THIS_MODULE);
1168 }
1169
1170 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1171 {
1172         iwl_abort_notification_waits(&mvm->notif_wait);
1173
1174         /*
1175          * This is a bit racy, but worst case we tell mac80211 about
1176          * a stopped/aborted scan when that was already done which
1177          * is not a problem. It is necessary to abort any os scan
1178          * here because mac80211 requires having the scan cleared
1179          * before restarting.
1180          * We'll reset the scan_status to NONE in restart cleanup in
1181          * the next start() call from mac80211. If restart isn't called
1182          * (no fw restart) scan status will stay busy.
1183          */
1184         iwl_mvm_report_scan_aborted(mvm);
1185
1186         /*
1187          * If we're restarting already, don't cycle restarts.
1188          * If INIT fw asserted, it will likely fail again.
1189          * If WoWLAN fw asserted, don't restart either, mac80211
1190          * can't recover this since we're already half suspended.
1191          */
1192         if (!mvm->fw_restart && fw_error) {
1193                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1194                                         NULL);
1195         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1196                 struct iwl_mvm_reprobe *reprobe;
1197
1198                 IWL_ERR(mvm,
1199                         "Firmware error during reconfiguration - reprobe!\n");
1200
1201                 /*
1202                  * get a module reference to avoid doing this while unloading
1203                  * anyway and to avoid scheduling a work with code that's
1204                  * being removed.
1205                  */
1206                 if (!try_module_get(THIS_MODULE)) {
1207                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1208                         return;
1209                 }
1210
1211                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1212                 if (!reprobe) {
1213                         module_put(THIS_MODULE);
1214                         return;
1215                 }
1216                 reprobe->dev = mvm->trans->dev;
1217                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1218                 schedule_work(&reprobe->work);
1219         } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1220                    mvm->hw_registered) {
1221                 /* don't let the transport/FW power down */
1222                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1223
1224                 if (fw_error && mvm->fw_restart > 0)
1225                         mvm->fw_restart--;
1226                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1227                 ieee80211_restart_hw(mvm->hw);
1228         }
1229 }
1230
1231 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1232 {
1233         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1234
1235         iwl_mvm_dump_nic_error_log(mvm);
1236
1237         iwl_mvm_nic_restart(mvm, true);
1238 }
1239
1240 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1241 {
1242         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1243
1244         WARN_ON(1);
1245         iwl_mvm_nic_restart(mvm, true);
1246 }
1247
1248 struct iwl_d0i3_iter_data {
1249         struct iwl_mvm *mvm;
1250         struct ieee80211_vif *connected_vif;
1251         u8 ap_sta_id;
1252         u8 vif_count;
1253         u8 offloading_tid;
1254         bool disable_offloading;
1255 };
1256
1257 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1258                                         struct ieee80211_vif *vif,
1259                                         struct iwl_d0i3_iter_data *iter_data)
1260 {
1261         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1262         struct iwl_mvm_sta *mvmsta;
1263         u32 available_tids = 0;
1264         u8 tid;
1265
1266         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1267                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1268                 return false;
1269
1270         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1271         if (!mvmsta)
1272                 return false;
1273
1274         spin_lock_bh(&mvmsta->lock);
1275         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1276                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1277
1278                 /*
1279                  * in case of pending tx packets, don't use this tid
1280                  * for offloading in order to prevent reuse of the same
1281                  * qos seq counters.
1282                  */
1283                 if (iwl_mvm_tid_queued(mvm, tid_data))
1284                         continue;
1285
1286                 if (tid_data->state != IWL_AGG_OFF)
1287                         continue;
1288
1289                 available_tids |= BIT(tid);
1290         }
1291         spin_unlock_bh(&mvmsta->lock);
1292
1293         /*
1294          * disallow protocol offloading if we have no available tid
1295          * (with no pending frames and no active aggregation,
1296          * as we don't handle "holes" properly - the scheduler needs the
1297          * frame's seq number and TFD index to match)
1298          */
1299         if (!available_tids)
1300                 return true;
1301
1302         /* for simplicity, just use the first available tid */
1303         iter_data->offloading_tid = ffs(available_tids) - 1;
1304         return false;
1305 }
1306
1307 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1308                                         struct ieee80211_vif *vif)
1309 {
1310         struct iwl_d0i3_iter_data *data = _data;
1311         struct iwl_mvm *mvm = data->mvm;
1312         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1313         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1314
1315         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1316         if (vif->type != NL80211_IFTYPE_STATION ||
1317             !vif->bss_conf.assoc)
1318                 return;
1319
1320         /*
1321          * in case of pending tx packets or active aggregations,
1322          * avoid offloading features in order to prevent reuse of
1323          * the same qos seq counters.
1324          */
1325         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1326                 data->disable_offloading = true;
1327
1328         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1329         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1330                                    false, flags);
1331
1332         /*
1333          * on init/association, mvm already configures POWER_TABLE_CMD
1334          * and REPLY_MCAST_FILTER_CMD, so currently don't
1335          * reconfigure them (we might want to use different
1336          * params later on, though).
1337          */
1338         data->ap_sta_id = mvmvif->ap_sta_id;
1339         data->vif_count++;
1340
1341         /*
1342          * no new commands can be sent at this stage, so it's safe
1343          * to save the vif pointer during d0i3 entrance.
1344          */
1345         data->connected_vif = vif;
1346 }
1347
1348 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1349                                     struct iwl_wowlan_config_cmd *cmd,
1350                                     struct iwl_d0i3_iter_data *iter_data)
1351 {
1352         struct ieee80211_sta *ap_sta;
1353         struct iwl_mvm_sta *mvm_ap_sta;
1354
1355         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1356                 return;
1357
1358         rcu_read_lock();
1359
1360         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1361         if (IS_ERR_OR_NULL(ap_sta))
1362                 goto out;
1363
1364         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1365         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1366         cmd->offloading_tid = iter_data->offloading_tid;
1367         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1368                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1369         /*
1370          * The d0i3 uCode takes care of the nonqos counters,
1371          * so configure only the qos seq ones.
1372          */
1373         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1374 out:
1375         rcu_read_unlock();
1376 }
1377
1378 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1379 {
1380         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1381         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1382         int ret;
1383         struct iwl_d0i3_iter_data d0i3_iter_data = {
1384                 .mvm = mvm,
1385         };
1386         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1387                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1388                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1389                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1390         };
1391         struct iwl_d3_manager_config d3_cfg_cmd = {
1392                 .min_sleep_time = cpu_to_le32(1000),
1393                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1394         };
1395
1396         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1397
1398         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1399                 return -EINVAL;
1400
1401         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1402
1403         /*
1404          * iwl_mvm_ref_sync takes a reference before checking the flag.
1405          * so by checking there is no held reference we prevent a state
1406          * in which iwl_mvm_ref_sync continues successfully while we
1407          * configure the firmware to enter d0i3
1408          */
1409         if (iwl_mvm_ref_taken(mvm)) {
1410                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1411                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1412                 wake_up(&mvm->d0i3_exit_waitq);
1413                 return 1;
1414         }
1415
1416         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1417                                                    IEEE80211_IFACE_ITER_NORMAL,
1418                                                    iwl_mvm_enter_d0i3_iterator,
1419                                                    &d0i3_iter_data);
1420         if (d0i3_iter_data.vif_count == 1) {
1421                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1422                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1423         } else {
1424                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1425                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1426                 mvm->d0i3_offloading = false;
1427         }
1428
1429         /* make sure we have no running tx while configuring the seqno */
1430         synchronize_net();
1431
1432         /* Flush the hw queues, in case something got queued during entry */
1433         /* TODO new tx api */
1434         if (iwl_mvm_has_new_tx_api(mvm)) {
1435                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1436         } else {
1437                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1438                                             flags);
1439                 if (ret)
1440                         return ret;
1441         }
1442
1443         /* configure wowlan configuration only if needed */
1444         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1445                 /* wake on beacons only if beacon storing isn't supported */
1446                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1447                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1448                         wowlan_config_cmd.wakeup_filter |=
1449                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1450
1451                 iwl_mvm_wowlan_config_key_params(mvm,
1452                                                  d0i3_iter_data.connected_vif,
1453                                                  true, flags);
1454
1455                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1456                                         &d0i3_iter_data);
1457
1458                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1459                                            sizeof(wowlan_config_cmd),
1460                                            &wowlan_config_cmd);
1461                 if (ret)
1462                         return ret;
1463         }
1464
1465         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1466                                     flags | CMD_MAKE_TRANS_IDLE,
1467                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1468 }
1469
1470 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1471                                        struct ieee80211_vif *vif)
1472 {
1473         struct iwl_mvm *mvm = _data;
1474         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1475
1476         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1477         if (vif->type != NL80211_IFTYPE_STATION ||
1478             !vif->bss_conf.assoc)
1479                 return;
1480
1481         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1482 }
1483
1484 struct iwl_mvm_d0i3_exit_work_iter_data {
1485         struct iwl_mvm *mvm;
1486         struct iwl_wowlan_status *status;
1487         u32 wakeup_reasons;
1488 };
1489
1490 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1491                                         struct ieee80211_vif *vif)
1492 {
1493         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1494         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1495         u32 reasons = data->wakeup_reasons;
1496
1497         /* consider only the relevant station interface */
1498         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1499             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1500                 return;
1501
1502         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1503                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1504         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1505                 ieee80211_beacon_loss(vif);
1506         else
1507                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1508 }
1509
1510 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1511 {
1512         struct ieee80211_sta *sta = NULL;
1513         struct iwl_mvm_sta *mvm_ap_sta;
1514         int i;
1515         bool wake_queues = false;
1516
1517         lockdep_assert_held(&mvm->mutex);
1518
1519         spin_lock_bh(&mvm->d0i3_tx_lock);
1520
1521         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1522                 goto out;
1523
1524         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1525
1526         /* get the sta in order to update seq numbers and re-enqueue skbs */
1527         sta = rcu_dereference_protected(
1528                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1529                         lockdep_is_held(&mvm->mutex));
1530
1531         if (IS_ERR_OR_NULL(sta)) {
1532                 sta = NULL;
1533                 goto out;
1534         }
1535
1536         if (mvm->d0i3_offloading && qos_seq) {
1537                 /* update qos seq numbers if offloading was enabled */
1538                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1539                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1540                         u16 seq = le16_to_cpu(qos_seq[i]);
1541                         /* firmware stores last-used one, we store next one */
1542                         seq += 0x10;
1543                         mvm_ap_sta->tid_data[i].seq_number = seq;
1544                 }
1545         }
1546 out:
1547         /* re-enqueue (or drop) all packets */
1548         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1549                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1550
1551                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1552                         ieee80211_free_txskb(mvm->hw, skb);
1553
1554                 /* if the skb_queue is not empty, we need to wake queues */
1555                 wake_queues = true;
1556         }
1557         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1558         wake_up(&mvm->d0i3_exit_waitq);
1559         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1560         if (wake_queues)
1561                 ieee80211_wake_queues(mvm->hw);
1562
1563         spin_unlock_bh(&mvm->d0i3_tx_lock);
1564 }
1565
1566 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1567 {
1568         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1569         struct iwl_host_cmd get_status_cmd = {
1570                 .id = WOWLAN_GET_STATUSES,
1571                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1572         };
1573         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1574                 .mvm = mvm,
1575         };
1576
1577         struct iwl_wowlan_status *status;
1578         int ret;
1579         u32 wakeup_reasons = 0;
1580         __le16 *qos_seq = NULL;
1581
1582         mutex_lock(&mvm->mutex);
1583         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1584         if (ret)
1585                 goto out;
1586
1587         status = (void *)get_status_cmd.resp_pkt->data;
1588         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1589         qos_seq = status->qos_seq_ctr;
1590
1591         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1592
1593         iter_data.wakeup_reasons = wakeup_reasons;
1594         iter_data.status = status;
1595         ieee80211_iterate_active_interfaces(mvm->hw,
1596                                             IEEE80211_IFACE_ITER_NORMAL,
1597                                             iwl_mvm_d0i3_exit_work_iter,
1598                                             &iter_data);
1599 out:
1600         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1601
1602         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1603                        wakeup_reasons);
1604
1605         /* qos_seq might point inside resp_pkt, so free it only now */
1606         if (get_status_cmd.resp_pkt)
1607                 iwl_free_resp(&get_status_cmd);
1608
1609         /* the FW might have updated the regdomain */
1610         iwl_mvm_update_changed_regdom(mvm);
1611
1612         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1613         mutex_unlock(&mvm->mutex);
1614 }
1615
1616 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1617 {
1618         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1619                     CMD_WAKE_UP_TRANS;
1620         int ret;
1621
1622         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1623
1624         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1625                 return -EINVAL;
1626
1627         mutex_lock(&mvm->d0i3_suspend_mutex);
1628         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1629                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1630                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1631                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1632                 return 0;
1633         }
1634         mutex_unlock(&mvm->d0i3_suspend_mutex);
1635
1636         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1637         if (ret)
1638                 goto out;
1639
1640         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1641                                                    IEEE80211_IFACE_ITER_NORMAL,
1642                                                    iwl_mvm_exit_d0i3_iterator,
1643                                                    mvm);
1644 out:
1645         schedule_work(&mvm->d0i3_exit_work);
1646         return ret;
1647 }
1648
1649 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1650 {
1651         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1652
1653         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1654         return _iwl_mvm_exit_d0i3(mvm);
1655 }
1656
1657 #define IWL_MVM_COMMON_OPS                                      \
1658         /* these could be differentiated */                     \
1659         .async_cb = iwl_mvm_async_cb,                           \
1660         .queue_full = iwl_mvm_stop_sw_queue,                    \
1661         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1662         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1663         .free_skb = iwl_mvm_free_skb,                           \
1664         .nic_error = iwl_mvm_nic_error,                         \
1665         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1666         .nic_config = iwl_mvm_nic_config,                       \
1667         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1668         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1669         /* as we only register one, these MUST be common! */    \
1670         .start = iwl_op_mode_mvm_start,                         \
1671         .stop = iwl_op_mode_mvm_stop
1672
1673 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1674         IWL_MVM_COMMON_OPS,
1675         .rx = iwl_mvm_rx,
1676 };
1677
1678 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1679                               struct napi_struct *napi,
1680                               struct iwl_rx_cmd_buffer *rxb,
1681                               unsigned int queue)
1682 {
1683         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1684         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1685         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1686
1687         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1688                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1689         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1690                                          RX_QUEUES_NOTIFICATION)))
1691                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1692         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1693                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1694 }
1695
1696 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1697         IWL_MVM_COMMON_OPS,
1698         .rx = iwl_mvm_rx_mq,
1699         .rx_rss = iwl_mvm_rx_mq_rss,
1700 };