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  * Copyright(c) 2018        Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  25  * USA
  26  *
  27  * The full GNU General Public License is included in this distribution
  28  * in the file called COPYING.
  29  *
  30  * Contact Information:
  31  *  Intel Linux Wireless <linuxwifi@intel.com>
  32  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  33  *
  34  * BSD LICENSE
  35  *
  36  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  37  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  38  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  39  * Copyright(c) 2018        Intel Corporation
  40  * All rights reserved.
  41  *
  42  * Redistribution and use in source and binary forms, with or without
  43  * modification, are permitted provided that the following conditions
  44  * are met:
  45  *
  46  *  * Redistributions of source code must retain the above copyright
  47  *    notice, this list of conditions and the following disclaimer.
  48  *  * Redistributions in binary form must reproduce the above copyright
  49  *    notice, this list of conditions and the following disclaimer in
  50  *    the documentation and/or other materials provided with the
  51  *    distribution.
  52  *  * Neither the name Intel Corporation nor the names of its
  53  *    contributors may be used to endorse or promote products derived
  54  *    from this software without specific prior written permission.
  55  *
  56  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  57  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  58  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  59  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  60  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  61  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  62  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  66  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  67  *
  68  *****************************************************************************/
  69 #include <linux/module.h>
  70 #include <linux/vmalloc.h>
  71 #include <net/mac80211.h>
  72
  73 #include "fw/notif-wait.h"
  74 #include "iwl-trans.h"
  75 #include "iwl-op-mode.h"
  76 #include "fw/img.h"
  77 #include "iwl-debug.h"
  78 #include "iwl-drv.h"
  79 #include "iwl-modparams.h"
  80 #include "mvm.h"
  81 #include "iwl-phy-db.h"
  82 #include "iwl-eeprom-parse.h"
  83 #include "iwl-csr.h"
  84 #include "iwl-io.h"
  85 #include "iwl-prph.h"
  86 #include "rs.h"
  87 #include "fw/api/scan.h"
  88 #include "time-event.h"
  89 #include "fw-api.h"
  90 #include "fw/api/scan.h"
  91 #include "fw/acpi.h"
  92
  93 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  94 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  95 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  96 MODULE_LICENSE("GPL");
  97
  98 static const struct iwl_op_mode_ops iwl_mvm_ops;
  99 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
 100
 101 struct iwl_mvm_mod_params iwlmvm_mod_params = {
 102         .power_scheme = IWL_POWER_SCHEME_BPS,
 103         .tfd_q_hang_detect = true
 104         /* rest of fields are 0 by default */
 105 };
 106
 107 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
 108 MODULE_PARM_DESC(init_dbg,
 109                  "set to true to debug an ASSERT in INIT fw (default: false");
 110 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
 111 MODULE_PARM_DESC(power_scheme,
 112                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 113 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 114                    bool, 0444);
 115 MODULE_PARM_DESC(tfd_q_hang_detect,
 116                  "TFD queues hang detection (default: true");
 117
 118 /*
 119  * module init and exit functions
 120  */
 121 static int __init iwl_mvm_init(void)
 122 {
 123         int ret;
 124
 125         ret = iwl_mvm_rate_control_register();
 126         if (ret) {
 127                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 128                 return ret;
 129         }
 130
 131         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 132         if (ret)
 133                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 134
 135         return ret;
 136 }
 137 module_init(iwl_mvm_init);
 138
 139 static void __exit iwl_mvm_exit(void)
 140 {
 141         iwl_opmode_deregister("iwlmvm");
 142         iwl_mvm_rate_control_unregister();
 143 }
 144 module_exit(iwl_mvm_exit);
 145
 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 147 {
 148         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 149         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 150         u32 reg_val = 0;
 151         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 152
 153         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 154                          FW_PHY_CFG_RADIO_TYPE_POS;
 155         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 156                          FW_PHY_CFG_RADIO_STEP_POS;
 157         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 158                          FW_PHY_CFG_RADIO_DASH_POS;
 159
 160         /* SKU control */
 161         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 162                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 163         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 164                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 165
 166         /* radio configuration */
 167         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 168         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 169         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 170
 171         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 172                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 173
 174         /*
 175          * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
 176          * sampling, and shouldn't be set to any non-zero value.
 177          * The same is supposed to be true of the other HW, but unsetting
 178          * them (such as the 7260) causes automatic tests to fail on seemingly
 179          * unrelated errors. Need to further investigate this, but for now
 180          * we'll separate cases.
 181          */
 182         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 183                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 184
 185         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 186                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 187                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 190                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 191                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 192                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 193                                 reg_val);
 194
 195         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 196                        radio_cfg_step, radio_cfg_dash);
 197
 198         /*
 199          * W/A : NIC is stuck in a reset state after Early PCIe power off
 200          * (PCIe power is lost before PERST# is asserted), causing ME FW
 201          * to lose ownership and not being able to obtain it back.
 202          */
 203         if (!mvm->trans->cfg->apmg_not_supported)
 204                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 205                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 206                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 207 }
 208
 209 /**
 210  * enum iwl_rx_handler_context context for Rx handler
 211  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 212  *      which can't acquire mvm->mutex.
 213  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 214  *      (and only in this case!), it should be set as ASYNC. In that case,
 215  *      it will be called from a worker with mvm->mutex held.
 216  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 217  *      mutex itself, it will be called from a worker without mvm->mutex held.
 218  */
 219 enum iwl_rx_handler_context {
 220         RX_HANDLER_SYNC,
 221         RX_HANDLER_ASYNC_LOCKED,
 222         RX_HANDLER_ASYNC_UNLOCKED,
 223 };
 224
 225 /**
 226  * struct iwl_rx_handlers handler for FW notification
 227  * @cmd_id: command id
 228  * @context: see &iwl_rx_handler_context
 229  * @fn: the function is called when notification is received
 230  */
 231 struct iwl_rx_handlers {
 232         u16 cmd_id;
 233         enum iwl_rx_handler_context context;
 234         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 235 };
 236
 237 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 238         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 239 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 240         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 241
 242 /*
 243  * Handlers for fw notifications
 244  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 245  * This list should be in order of frequency for performance purposes.
 246  *
 247  * The handler can be one from three contexts, see &iwl_rx_handler_context
 248  */
 249 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 250         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 251         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 252
 253         RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
 254                        iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC),
 255
 256         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 257                    RX_HANDLER_ASYNC_LOCKED),
 258         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 259                    RX_HANDLER_ASYNC_LOCKED),
 260         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 261                    RX_HANDLER_ASYNC_LOCKED),
 262
 263         RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 264                    iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 265
 266         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 267                    RX_HANDLER_SYNC),
 268         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 269                    RX_HANDLER_ASYNC_LOCKED),
 270
 271         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 272
 273         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 274                    iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 275         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 276                    iwl_mvm_rx_lmac_scan_complete_notif,
 277                    RX_HANDLER_ASYNC_LOCKED),
 278         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 279                    RX_HANDLER_SYNC),
 280         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 281                    RX_HANDLER_ASYNC_LOCKED),
 282         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 283                    iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 284
 285         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 286                    RX_HANDLER_SYNC),
 287
 288         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 289                    RX_HANDLER_SYNC),
 290
 291         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 292         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 293                    iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 294         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 295                    RX_HANDLER_ASYNC_LOCKED),
 296         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 297                        iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 298         RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 299                        iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 300
 301         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 302                    RX_HANDLER_ASYNC_LOCKED),
 303         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 304                    RX_HANDLER_SYNC),
 305         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 306                    RX_HANDLER_ASYNC_LOCKED),
 307         RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
 308                        iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
 309         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 310                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 311         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 312                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 313         RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
 314                        iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
 315 };
 316 #undef RX_HANDLER
 317 #undef RX_HANDLER_GRP
 318
 319 /* Please keep this array *SORTED* by hex value.
 320  * Access is done through binary search
 321  */
 322 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 323         HCMD_NAME(MVM_ALIVE),
 324         HCMD_NAME(REPLY_ERROR),
 325         HCMD_NAME(ECHO_CMD),
 326         HCMD_NAME(INIT_COMPLETE_NOTIF),
 327         HCMD_NAME(PHY_CONTEXT_CMD),
 328         HCMD_NAME(DBG_CFG),
 329         HCMD_NAME(SCAN_CFG_CMD),
 330         HCMD_NAME(SCAN_REQ_UMAC),
 331         HCMD_NAME(SCAN_ABORT_UMAC),
 332         HCMD_NAME(SCAN_COMPLETE_UMAC),
 333         HCMD_NAME(TOF_CMD),
 334         HCMD_NAME(TOF_NOTIFICATION),
 335         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 336         HCMD_NAME(ADD_STA_KEY),
 337         HCMD_NAME(ADD_STA),
 338         HCMD_NAME(REMOVE_STA),
 339         HCMD_NAME(FW_GET_ITEM_CMD),
 340         HCMD_NAME(TX_CMD),
 341         HCMD_NAME(SCD_QUEUE_CFG),
 342         HCMD_NAME(TXPATH_FLUSH),
 343         HCMD_NAME(MGMT_MCAST_KEY),
 344         HCMD_NAME(WEP_KEY),
 345         HCMD_NAME(SHARED_MEM_CFG),
 346         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 347         HCMD_NAME(MAC_CONTEXT_CMD),
 348         HCMD_NAME(TIME_EVENT_CMD),
 349         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 350         HCMD_NAME(BINDING_CONTEXT_CMD),
 351         HCMD_NAME(TIME_QUOTA_CMD),
 352         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 353         HCMD_NAME(LEDS_CMD),
 354         HCMD_NAME(LQ_CMD),
 355         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 356         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 357         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 358         HCMD_NAME(HOT_SPOT_CMD),
 359         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 360         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 361         HCMD_NAME(BT_COEX_CI),
 362         HCMD_NAME(PHY_CONFIGURATION_CMD),
 363         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 364         HCMD_NAME(PHY_DB_CMD),
 365         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 366         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 367         HCMD_NAME(POWER_TABLE_CMD),
 368         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 369         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 370         HCMD_NAME(DC2DC_CONFIG_CMD),
 371         HCMD_NAME(NVM_ACCESS_CMD),
 372         HCMD_NAME(BEACON_NOTIFICATION),
 373         HCMD_NAME(BEACON_TEMPLATE_CMD),
 374         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 375         HCMD_NAME(BT_CONFIG),
 376         HCMD_NAME(STATISTICS_CMD),
 377         HCMD_NAME(STATISTICS_NOTIFICATION),
 378         HCMD_NAME(EOSP_NOTIFICATION),
 379         HCMD_NAME(REDUCE_TX_POWER_CMD),
 380         HCMD_NAME(CARD_STATE_NOTIFICATION),
 381         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 382         HCMD_NAME(TDLS_CONFIG_CMD),
 383         HCMD_NAME(MAC_PM_POWER_TABLE),
 384         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 385         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 386         HCMD_NAME(RSS_CONFIG_CMD),
 387         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 388         HCMD_NAME(REPLY_RX_PHY_CMD),
 389         HCMD_NAME(REPLY_RX_MPDU_CMD),
 390         HCMD_NAME(FRAME_RELEASE),
 391         HCMD_NAME(BA_NOTIF),
 392         HCMD_NAME(MCC_UPDATE_CMD),
 393         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 394         HCMD_NAME(MARKER_CMD),
 395         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 396         HCMD_NAME(BCAST_FILTER_CMD),
 397         HCMD_NAME(MCAST_FILTER_CMD),
 398         HCMD_NAME(REPLY_SF_CFG_CMD),
 399         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 400         HCMD_NAME(D3_CONFIG_CMD),
 401         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 402         HCMD_NAME(OFFLOADS_QUERY_CMD),
 403         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 404         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 405         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 406         HCMD_NAME(WOWLAN_PATTERNS),
 407         HCMD_NAME(WOWLAN_CONFIGURATION),
 408         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 409         HCMD_NAME(WOWLAN_TKIP_PARAM),
 410         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 411         HCMD_NAME(WOWLAN_GET_STATUSES),
 412         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 413         HCMD_NAME(D0I3_END_CMD),
 414         HCMD_NAME(LTR_CONFIG),
 415 };
 416
 417 /* Please keep this array *SORTED* by hex value.
 418  * Access is done through binary search
 419  */
 420 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 421         HCMD_NAME(SHARED_MEM_CFG_CMD),
 422         HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 423 };
 424
 425 /* Please keep this array *SORTED* by hex value.
 426  * Access is done through binary search
 427  */
 428 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 429         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 430 };
 431
 432 /* Please keep this array *SORTED* by hex value.
 433  * Access is done through binary search
 434  */
 435 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 436         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 437         HCMD_NAME(CTDP_CONFIG_CMD),
 438         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 439         HCMD_NAME(GEO_TX_POWER_LIMIT),
 440         HCMD_NAME(CT_KILL_NOTIFICATION),
 441         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 442 };
 443
 444 /* Please keep this array *SORTED* by hex value.
 445  * Access is done through binary search
 446  */
 447 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 448         HCMD_NAME(DQA_ENABLE_CMD),
 449         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 450         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 451         HCMD_NAME(STA_HE_CTXT_CMD),
 452         HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
 453         HCMD_NAME(STA_PM_NOTIF),
 454         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 455         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 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_debug_names[] = {
 462         HCMD_NAME(MFU_ASSERT_DUMP_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_prot_offload_names[] = {
 469         HCMD_NAME(STORED_BEACON_NTF),
 470 };
 471
 472 /* Please keep this array *SORTED* by hex value.
 473  * Access is done through binary search
 474  */
 475 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 476         HCMD_NAME(NVM_ACCESS_COMPLETE),
 477         HCMD_NAME(NVM_GET_INFO),
 478 };
 479
 480 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 481         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 482         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 483         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 484         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 485         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 486         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 487         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 488         [REGULATORY_AND_NVM_GROUP] =
 489                 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 490 };
 491
 492 /* this forward declaration can avoid to export the function */
 493 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 494 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 495
 496 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
 497 {
 498         const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
 499         u64 dflt_pwr_limit;
 500
 501         if (!backoff)
 502                 return 0;
 503
 504         dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
 505
 506         while (backoff->pwr) {
 507                 if (dflt_pwr_limit >= backoff->pwr)
 508                         return backoff->backoff;
 509
 510                 backoff++;
 511         }
 512
 513         return 0;
 514 }
 515
 516 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 517 {
 518         struct iwl_mvm *mvm =
 519                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 520         struct ieee80211_vif *tx_blocked_vif;
 521         struct iwl_mvm_vif *mvmvif;
 522
 523         mutex_lock(&mvm->mutex);
 524
 525         tx_blocked_vif =
 526                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 527                                           lockdep_is_held(&mvm->mutex));
 528
 529         if (!tx_blocked_vif)
 530                 goto unlock;
 531
 532         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 533         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 534         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 535 unlock:
 536         mutex_unlock(&mvm->mutex);
 537 }
 538
 539 static int iwl_mvm_fwrt_dump_start(void *ctx)
 540 {
 541         struct iwl_mvm *mvm = ctx;
 542         int ret;
 543
 544         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 545         if (ret)
 546                 return ret;
 547
 548         mutex_lock(&mvm->mutex);
 549
 550         return 0;
 551 }
 552
 553 static void iwl_mvm_fwrt_dump_end(void *ctx)
 554 {
 555         struct iwl_mvm *mvm = ctx;
 556
 557         mutex_unlock(&mvm->mutex);
 558
 559         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 560 }
 561
 562 static bool iwl_mvm_fwrt_fw_running(void *ctx)
 563 {
 564         return iwl_mvm_firmware_running(ctx);
 565 }
 566
 567 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
 568         .dump_start = iwl_mvm_fwrt_dump_start,
 569         .dump_end = iwl_mvm_fwrt_dump_end,
 570         .fw_running = iwl_mvm_fwrt_fw_running,
 571 };
 572
 573 static struct iwl_op_mode *
 574 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 575                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 576 {
 577         struct ieee80211_hw *hw;
 578         struct iwl_op_mode *op_mode;
 579         struct iwl_mvm *mvm;
 580         struct iwl_trans_config trans_cfg = {};
 581         static const u8 no_reclaim_cmds[] = {
 582                 TX_CMD,
 583         };
 584         int err, scan_size;
 585         u32 min_backoff;
 586
 587         /*
 588          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 589          * index all over the driver - check that its value corresponds to the
 590          * array size.
 591          */
 592         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 593
 594         /********************************
 595          * 1. Allocating and configuring HW data
 596          ********************************/
 597         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 598                                 sizeof(struct iwl_mvm),
 599                                 &iwl_mvm_hw_ops);
 600         if (!hw)
 601                 return NULL;
 602
 603         if (cfg->max_rx_agg_size)
 604                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 605
 606         if (cfg->max_tx_agg_size)
 607                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 608
 609         op_mode = hw->priv;
 610
 611         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 612         mvm->dev = trans->dev;
 613         mvm->trans = trans;
 614         mvm->cfg = cfg;
 615         mvm->fw = fw;
 616         mvm->hw = hw;
 617
 618         iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
 619                             dbgfs_dir);
 620
 621         mvm->init_status = 0;
 622
 623         if (iwl_mvm_has_new_rx_api(mvm)) {
 624                 op_mode->ops = &iwl_mvm_ops_mq;
 625                 trans->rx_mpdu_cmd_hdr_size =
 626                         (trans->cfg->device_family >=
 627                          IWL_DEVICE_FAMILY_22560) ?
 628                         sizeof(struct iwl_rx_mpdu_desc) :
 629                         IWL_RX_DESC_SIZE_V1;
 630         } else {
 631                 op_mode->ops = &iwl_mvm_ops;
 632                 trans->rx_mpdu_cmd_hdr_size =
 633                         sizeof(struct iwl_rx_mpdu_res_start);
 634
 635                 if (WARN_ON(trans->num_rx_queues > 1))
 636                         goto out_free;
 637         }
 638
 639         mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 640
 641         mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 642         mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
 643         mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 644         mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 645
 646         mvm->sf_state = SF_UNINIT;
 647         if (iwl_mvm_has_unified_ucode(mvm))
 648                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
 649         else
 650                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
 651         mvm->drop_bcn_ap_mode = true;
 652
 653         mutex_init(&mvm->mutex);
 654         mutex_init(&mvm->d0i3_suspend_mutex);
 655         spin_lock_init(&mvm->async_handlers_lock);
 656         INIT_LIST_HEAD(&mvm->time_event_list);
 657         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 658         INIT_LIST_HEAD(&mvm->async_handlers_list);
 659         spin_lock_init(&mvm->time_event_lock);
 660         spin_lock_init(&mvm->queue_info_lock);
 661
 662         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 663         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 664         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 665         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 666         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 667         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 668
 669         spin_lock_init(&mvm->d0i3_tx_lock);
 670         spin_lock_init(&mvm->refs_lock);
 671         skb_queue_head_init(&mvm->d0i3_tx);
 672         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 673         init_waitqueue_head(&mvm->rx_sync_waitq);
 674
 675         atomic_set(&mvm->queue_sync_counter, 0);
 676
 677         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 678
 679         spin_lock_init(&mvm->tcm.lock);
 680         INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
 681         mvm->tcm.ts = jiffies;
 682         mvm->tcm.ll_ts = jiffies;
 683         mvm->tcm.uapsd_nonagg_ts = jiffies;
 684
 685         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 686
 687         /*
 688          * Populate the state variables that the transport layer needs
 689          * to know about.
 690          */
 691         trans_cfg.op_mode = op_mode;
 692         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 693         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 694         switch (iwlwifi_mod_params.amsdu_size) {
 695         case IWL_AMSDU_DEF:
 696         case IWL_AMSDU_4K:
 697                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 698                 break;
 699         case IWL_AMSDU_8K:
 700                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 701                 break;
 702         case IWL_AMSDU_12K:
 703                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 704                 break;
 705         default:
 706                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 707                        iwlwifi_mod_params.amsdu_size);
 708                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 709         }
 710
 711         /* the hardware splits the A-MSDU */
 712         if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
 713                 trans_cfg.rx_buf_size = IWL_AMSDU_2K;
 714                 /* TODO: remove when balanced power mode is fw supported */
 715                 iwlmvm_mod_params.power_scheme = IWL_POWER_SCHEME_CAM;
 716         } else if (mvm->cfg->mq_rx_supported) {
 717                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 718         }
 719
 720         trans->wide_cmd_header = true;
 721         trans_cfg.bc_table_dword =
 722                 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560;
 723
 724         trans_cfg.command_groups = iwl_mvm_groups;
 725         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 726
 727         trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 728         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 729         trans_cfg.scd_set_active = true;
 730
 731         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 732                                           driver_data[2]);
 733
 734         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 735
 736         /* Set a short watchdog for the command queue */
 737         trans_cfg.cmd_q_wdg_timeout =
 738                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 739
 740         snprintf(mvm->hw->wiphy->fw_version,
 741                  sizeof(mvm->hw->wiphy->fw_version),
 742                  "%s", fw->fw_version);
 743
 744         /* Configure transport layer */
 745         iwl_trans_configure(mvm->trans, &trans_cfg);
 746
 747         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 748         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 749         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 750         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 751                sizeof(trans->dbg_conf_tlv));
 752         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 753         trans->dbg_dump_mask = mvm->fw->dbg_dump_mask;
 754
 755         trans->iml = mvm->fw->iml;
 756         trans->iml_len = mvm->fw->iml_len;
 757
 758         /* set up notification wait support */
 759         iwl_notification_wait_init(&mvm->notif_wait);
 760
 761         /* Init phy db */
 762         mvm->phy_db = iwl_phy_db_init(trans);
 763         if (!mvm->phy_db) {
 764                 IWL_ERR(mvm, "Cannot init phy_db\n");
 765                 goto out_free;
 766         }
 767
 768         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 769                  mvm->cfg->name, mvm->trans->hw_rev);
 770
 771         if (iwlwifi_mod_params.nvm_file)
 772                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 773         else
 774                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 775                                  "working without external nvm file\n");
 776
 777         err = iwl_trans_start_hw(mvm->trans);
 778         if (err)
 779                 goto out_free;
 780
 781         mutex_lock(&mvm->mutex);
 782         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 783         err = iwl_run_init_mvm_ucode(mvm, true);
 784         if (!iwlmvm_mod_params.init_dbg || !err)
 785                 iwl_mvm_stop_device(mvm);
 786         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 787         mutex_unlock(&mvm->mutex);
 788         if (err < 0) {
 789                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 790                 goto out_free;
 791         }
 792
 793         scan_size = iwl_mvm_scan_size(mvm);
 794
 795         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 796         if (!mvm->scan_cmd)
 797                 goto out_free;
 798
 799         /* Set EBS as successful as long as not stated otherwise by the FW. */
 800         mvm->last_ebs_successful = true;
 801
 802         err = iwl_mvm_mac_setup_register(mvm);
 803         if (err)
 804                 goto out_free;
 805         mvm->hw_registered = true;
 806
 807         min_backoff = iwl_mvm_min_backoff(mvm);
 808         iwl_mvm_thermal_initialize(mvm, min_backoff);
 809
 810         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 811         if (err)
 812                 goto out_unregister;
 813
 814         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 815                 memset(&mvm->rx_stats_v3, 0,
 816                        sizeof(struct mvm_statistics_rx_v3));
 817         else
 818                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 819
 820         /* The transport always starts with a taken reference, we can
 821          * release it now if d0i3 is supported */
 822         if (iwl_mvm_is_d0i3_supported(mvm))
 823                 iwl_trans_unref(mvm->trans);
 824
 825         iwl_mvm_tof_init(mvm);
 826
 827         return op_mode;
 828
 829  out_unregister:
 830         if (iwlmvm_mod_params.init_dbg)
 831                 return op_mode;
 832
 833         ieee80211_unregister_hw(mvm->hw);
 834         mvm->hw_registered = false;
 835         iwl_mvm_leds_exit(mvm);
 836         iwl_mvm_thermal_exit(mvm);
 837  out_free:
 838         iwl_fw_flush_dump(&mvm->fwrt);
 839
 840         if (iwlmvm_mod_params.init_dbg)
 841                 return op_mode;
 842         iwl_phy_db_free(mvm->phy_db);
 843         kfree(mvm->scan_cmd);
 844         iwl_trans_op_mode_leave(trans);
 845
 846         ieee80211_free_hw(mvm->hw);
 847         return NULL;
 848 }
 849
 850 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 851 {
 852         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 853         int i;
 854
 855         /* If d0i3 is supported, we have released the reference that
 856          * the transport started with, so we should take it back now
 857          * that we are leaving.
 858          */
 859         if (iwl_mvm_is_d0i3_supported(mvm))
 860                 iwl_trans_ref(mvm->trans);
 861
 862         iwl_mvm_leds_exit(mvm);
 863
 864         iwl_mvm_thermal_exit(mvm);
 865
 866         if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
 867                 ieee80211_unregister_hw(mvm->hw);
 868                 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 869         }
 870
 871         kfree(mvm->scan_cmd);
 872         kfree(mvm->mcast_filter_cmd);
 873         mvm->mcast_filter_cmd = NULL;
 874
 875 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 876         kfree(mvm->d3_resume_sram);
 877 #endif
 878         iwl_trans_op_mode_leave(mvm->trans);
 879
 880         iwl_phy_db_free(mvm->phy_db);
 881         mvm->phy_db = NULL;
 882
 883         kfree(mvm->nvm_data);
 884         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 885                 kfree(mvm->nvm_sections[i].data);
 886
 887         cancel_delayed_work_sync(&mvm->tcm.work);
 888
 889         iwl_mvm_tof_clean(mvm);
 890
 891         mutex_destroy(&mvm->mutex);
 892         mutex_destroy(&mvm->d0i3_suspend_mutex);
 893
 894         ieee80211_free_hw(mvm->hw);
 895 }
 896
 897 struct iwl_async_handler_entry {
 898         struct list_head list;
 899         struct iwl_rx_cmd_buffer rxb;
 900         enum iwl_rx_handler_context context;
 901         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 902 };
 903
 904 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 905 {
 906         struct iwl_async_handler_entry *entry, *tmp;
 907
 908         spin_lock_bh(&mvm->async_handlers_lock);
 909         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 910                 iwl_free_rxb(&entry->rxb);
 911                 list_del(&entry->list);
 912                 kfree(entry);
 913         }
 914         spin_unlock_bh(&mvm->async_handlers_lock);
 915 }
 916
 917 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 918 {
 919         struct iwl_mvm *mvm =
 920                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 921         struct iwl_async_handler_entry *entry, *tmp;
 922         LIST_HEAD(local_list);
 923
 924         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 925
 926         /*
 927          * Sync with Rx path with a lock. Remove all the entries from this list,
 928          * add them to a local one (lock free), and then handle them.
 929          */
 930         spin_lock_bh(&mvm->async_handlers_lock);
 931         list_splice_init(&mvm->async_handlers_list, &local_list);
 932         spin_unlock_bh(&mvm->async_handlers_lock);
 933
 934         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 935                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 936                         mutex_lock(&mvm->mutex);
 937                 entry->fn(mvm, &entry->rxb);
 938                 iwl_free_rxb(&entry->rxb);
 939                 list_del(&entry->list);
 940                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 941                         mutex_unlock(&mvm->mutex);
 942                 kfree(entry);
 943         }
 944 }
 945
 946 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 947                                             struct iwl_rx_packet *pkt)
 948 {
 949         struct iwl_fw_dbg_trigger_tlv *trig;
 950         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 951         int i;
 952
 953         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 954                 return;
 955
 956         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 957         cmds_trig = (void *)trig->data;
 958
 959         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
 960                 return;
 961
 962         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 963                 /* don't collect on CMD 0 */
 964                 if (!cmds_trig->cmds[i].cmd_id)
 965                         break;
 966
 967                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 968                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 969                         continue;
 970
 971                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 972                                         "CMD 0x%02x.%02x received",
 973                                         pkt->hdr.group_id, pkt->hdr.cmd);
 974                 break;
 975         }
 976 }
 977
 978 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 979                               struct iwl_rx_cmd_buffer *rxb,
 980                               struct iwl_rx_packet *pkt)
 981 {
 982         int i;
 983
 984         iwl_mvm_rx_check_trigger(mvm, pkt);
 985
 986         /*
 987          * Do the notification wait before RX handlers so
 988          * even if the RX handler consumes the RXB we have
 989          * access to it in the notification wait entry.
 990          */
 991         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 992
 993         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 994                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 995                 struct iwl_async_handler_entry *entry;
 996
 997                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 998                         continue;
 999
1000                 if (rx_h->context == RX_HANDLER_SYNC) {
1001                         rx_h->fn(mvm, rxb);
1002                         return;
1003                 }
1004
1005                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1006                 /* we can't do much... */
1007                 if (!entry)
1008                         return;
1009
1010                 entry->rxb._page = rxb_steal_page(rxb);
1011                 entry->rxb._offset = rxb->_offset;
1012                 entry->rxb._rx_page_order = rxb->_rx_page_order;
1013                 entry->fn = rx_h->fn;
1014                 entry->context = rx_h->context;
1015                 spin_lock(&mvm->async_handlers_lock);
1016                 list_add_tail(&entry->list, &mvm->async_handlers_list);
1017                 spin_unlock(&mvm->async_handlers_lock);
1018                 schedule_work(&mvm->async_handlers_wk);
1019                 break;
1020         }
1021 }
1022
1023 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1024                        struct napi_struct *napi,
1025                        struct iwl_rx_cmd_buffer *rxb)
1026 {
1027         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1028         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1029         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1030
1031         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1032                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1033         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1034                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1035         else
1036                 iwl_mvm_rx_common(mvm, rxb, pkt);
1037 }
1038
1039 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1040                           struct napi_struct *napi,
1041                           struct iwl_rx_cmd_buffer *rxb)
1042 {
1043         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1044         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1045         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1046
1047         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1048                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1049         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1050                                          RX_QUEUES_NOTIFICATION)))
1051                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1052         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1053                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1054         else
1055                 iwl_mvm_rx_common(mvm, rxb, pkt);
1056 }
1057
1058 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1059 {
1060         int q;
1061
1062         if (WARN_ON_ONCE(!mq))
1063                 return;
1064
1065         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1066                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1067                         IWL_DEBUG_TX_QUEUES(mvm,
1068                                             "mac80211 %d already stopped\n", q);
1069                         continue;
1070                 }
1071
1072                 ieee80211_stop_queue(mvm->hw, q);
1073         }
1074 }
1075
1076 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1077                              const struct iwl_device_cmd *cmd)
1078 {
1079         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1080
1081         /*
1082          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1083          * commands that need to block the Tx queues.
1084          */
1085         iwl_trans_block_txq_ptrs(mvm->trans, false);
1086 }
1087
1088 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1089 {
1090         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1091         unsigned long mq;
1092
1093         spin_lock_bh(&mvm->queue_info_lock);
1094         mq = mvm->hw_queue_to_mac80211[hw_queue];
1095         spin_unlock_bh(&mvm->queue_info_lock);
1096
1097         iwl_mvm_stop_mac_queues(mvm, mq);
1098 }
1099
1100 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1101 {
1102         int q;
1103
1104         if (WARN_ON_ONCE(!mq))
1105                 return;
1106
1107         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1108                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1109                         IWL_DEBUG_TX_QUEUES(mvm,
1110                                             "mac80211 %d still stopped\n", q);
1111                         continue;
1112                 }
1113
1114                 ieee80211_wake_queue(mvm->hw, q);
1115         }
1116 }
1117
1118 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1119 {
1120         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1121         unsigned long mq;
1122
1123         spin_lock_bh(&mvm->queue_info_lock);
1124         mq = mvm->hw_queue_to_mac80211[hw_queue];
1125         spin_unlock_bh(&mvm->queue_info_lock);
1126
1127         iwl_mvm_start_mac_queues(mvm, mq);
1128 }
1129
1130 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1131 {
1132         bool state = iwl_mvm_is_radio_killed(mvm);
1133
1134         if (state)
1135                 wake_up(&mvm->rx_sync_waitq);
1136
1137         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1138 }
1139
1140 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1141 {
1142         if (state)
1143                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1144         else
1145                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1146
1147         iwl_mvm_set_rfkill_state(mvm);
1148 }
1149
1150 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1151 {
1152         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1153         bool calibrating = READ_ONCE(mvm->calibrating);
1154
1155         if (state)
1156                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1157         else
1158                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1159
1160         iwl_mvm_set_rfkill_state(mvm);
1161
1162         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1163         if (calibrating)
1164                 iwl_abort_notification_waits(&mvm->notif_wait);
1165
1166         /*
1167          * Stop the device if we run OPERATIONAL firmware or if we are in the
1168          * middle of the calibrations.
1169          */
1170         return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1171 }
1172
1173 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1174 {
1175         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1176         struct ieee80211_tx_info *info;
1177
1178         info = IEEE80211_SKB_CB(skb);
1179         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1180         ieee80211_free_txskb(mvm->hw, skb);
1181 }
1182
1183 struct iwl_mvm_reprobe {
1184         struct device *dev;
1185         struct work_struct work;
1186 };
1187
1188 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1189 {
1190         struct iwl_mvm_reprobe *reprobe;
1191
1192         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1193         if (device_reprobe(reprobe->dev))
1194                 dev_err(reprobe->dev, "reprobe failed!\n");
1195         put_device(reprobe->dev);
1196         kfree(reprobe);
1197         module_put(THIS_MODULE);
1198 }
1199
1200 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1201 {
1202         iwl_abort_notification_waits(&mvm->notif_wait);
1203
1204         /*
1205          * This is a bit racy, but worst case we tell mac80211 about
1206          * a stopped/aborted scan when that was already done which
1207          * is not a problem. It is necessary to abort any os scan
1208          * here because mac80211 requires having the scan cleared
1209          * before restarting.
1210          * We'll reset the scan_status to NONE in restart cleanup in
1211          * the next start() call from mac80211. If restart isn't called
1212          * (no fw restart) scan status will stay busy.
1213          */
1214         iwl_mvm_report_scan_aborted(mvm);
1215
1216         /*
1217          * If we're restarting already, don't cycle restarts.
1218          * If INIT fw asserted, it will likely fail again.
1219          * If WoWLAN fw asserted, don't restart either, mac80211
1220          * can't recover this since we're already half suspended.
1221          */
1222         if (!mvm->fw_restart && fw_error) {
1223                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1224                                         NULL);
1225         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1226                 struct iwl_mvm_reprobe *reprobe;
1227
1228                 IWL_ERR(mvm,
1229                         "Firmware error during reconfiguration - reprobe!\n");
1230
1231                 /*
1232                  * get a module reference to avoid doing this while unloading
1233                  * anyway and to avoid scheduling a work with code that's
1234                  * being removed.
1235                  */
1236                 if (!try_module_get(THIS_MODULE)) {
1237                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1238                         return;
1239                 }
1240
1241                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1242                 if (!reprobe) {
1243                         module_put(THIS_MODULE);
1244                         return;
1245                 }
1246                 reprobe->dev = get_device(mvm->trans->dev);
1247                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1248                 schedule_work(&reprobe->work);
1249         } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1250                    mvm->hw_registered) {
1251                 /* don't let the transport/FW power down */
1252                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1253
1254                 if (fw_error && mvm->fw_restart > 0)
1255                         mvm->fw_restart--;
1256                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1257                 ieee80211_restart_hw(mvm->hw);
1258         }
1259 }
1260
1261 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1262 {
1263         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1264
1265         iwl_mvm_dump_nic_error_log(mvm);
1266
1267         iwl_mvm_nic_restart(mvm, true);
1268 }
1269
1270 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1271 {
1272         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1273
1274         WARN_ON(1);
1275         iwl_mvm_nic_restart(mvm, true);
1276 }
1277
1278 struct iwl_d0i3_iter_data {
1279         struct iwl_mvm *mvm;
1280         struct ieee80211_vif *connected_vif;
1281         u8 ap_sta_id;
1282         u8 vif_count;
1283         u8 offloading_tid;
1284         bool disable_offloading;
1285 };
1286
1287 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1288                                         struct ieee80211_vif *vif,
1289                                         struct iwl_d0i3_iter_data *iter_data)
1290 {
1291         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1292         struct iwl_mvm_sta *mvmsta;
1293         u32 available_tids = 0;
1294         u8 tid;
1295
1296         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1297                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1298                 return false;
1299
1300         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1301         if (!mvmsta)
1302                 return false;
1303
1304         spin_lock_bh(&mvmsta->lock);
1305         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1306                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1307
1308                 /*
1309                  * in case of pending tx packets, don't use this tid
1310                  * for offloading in order to prevent reuse of the same
1311                  * qos seq counters.
1312                  */
1313                 if (iwl_mvm_tid_queued(mvm, tid_data))
1314                         continue;
1315
1316                 if (tid_data->state != IWL_AGG_OFF)
1317                         continue;
1318
1319                 available_tids |= BIT(tid);
1320         }
1321         spin_unlock_bh(&mvmsta->lock);
1322
1323         /*
1324          * disallow protocol offloading if we have no available tid
1325          * (with no pending frames and no active aggregation,
1326          * as we don't handle "holes" properly - the scheduler needs the
1327          * frame's seq number and TFD index to match)
1328          */
1329         if (!available_tids)
1330                 return true;
1331
1332         /* for simplicity, just use the first available tid */
1333         iter_data->offloading_tid = ffs(available_tids) - 1;
1334         return false;
1335 }
1336
1337 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1338                                         struct ieee80211_vif *vif)
1339 {
1340         struct iwl_d0i3_iter_data *data = _data;
1341         struct iwl_mvm *mvm = data->mvm;
1342         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1343         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1344
1345         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1346         if (vif->type != NL80211_IFTYPE_STATION ||
1347             !vif->bss_conf.assoc)
1348                 return;
1349
1350         /*
1351          * in case of pending tx packets or active aggregations,
1352          * avoid offloading features in order to prevent reuse of
1353          * the same qos seq counters.
1354          */
1355         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1356                 data->disable_offloading = true;
1357
1358         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1359         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1360                                    false, flags);
1361
1362         /*
1363          * on init/association, mvm already configures POWER_TABLE_CMD
1364          * and REPLY_MCAST_FILTER_CMD, so currently don't
1365          * reconfigure them (we might want to use different
1366          * params later on, though).
1367          */
1368         data->ap_sta_id = mvmvif->ap_sta_id;
1369         data->vif_count++;
1370
1371         /*
1372          * no new commands can be sent at this stage, so it's safe
1373          * to save the vif pointer during d0i3 entrance.
1374          */
1375         data->connected_vif = vif;
1376 }
1377
1378 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1379                                     struct iwl_wowlan_config_cmd *cmd,
1380                                     struct iwl_d0i3_iter_data *iter_data)
1381 {
1382         struct ieee80211_sta *ap_sta;
1383         struct iwl_mvm_sta *mvm_ap_sta;
1384
1385         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1386                 return;
1387
1388         rcu_read_lock();
1389
1390         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1391         if (IS_ERR_OR_NULL(ap_sta))
1392                 goto out;
1393
1394         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1395         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1396         cmd->offloading_tid = iter_data->offloading_tid;
1397         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1398                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1399         /*
1400          * The d0i3 uCode takes care of the nonqos counters,
1401          * so configure only the qos seq ones.
1402          */
1403         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1404 out:
1405         rcu_read_unlock();
1406 }
1407
1408 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1409 {
1410         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1411         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1412         int ret;
1413         struct iwl_d0i3_iter_data d0i3_iter_data = {
1414                 .mvm = mvm,
1415         };
1416         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1417                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1418                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1419                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1420         };
1421         struct iwl_d3_manager_config d3_cfg_cmd = {
1422                 .min_sleep_time = cpu_to_le32(1000),
1423                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1424         };
1425
1426         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1427
1428         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1429                 return -EINVAL;
1430
1431         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1432
1433         /*
1434          * iwl_mvm_ref_sync takes a reference before checking the flag.
1435          * so by checking there is no held reference we prevent a state
1436          * in which iwl_mvm_ref_sync continues successfully while we
1437          * configure the firmware to enter d0i3
1438          */
1439         if (iwl_mvm_ref_taken(mvm)) {
1440                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1441                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1442                 wake_up(&mvm->d0i3_exit_waitq);
1443                 return 1;
1444         }
1445
1446         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1447                                                    IEEE80211_IFACE_ITER_NORMAL,
1448                                                    iwl_mvm_enter_d0i3_iterator,
1449                                                    &d0i3_iter_data);
1450         if (d0i3_iter_data.vif_count == 1) {
1451                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1452                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1453         } else {
1454                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1455                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1456                 mvm->d0i3_offloading = false;
1457         }
1458
1459         iwl_mvm_pause_tcm(mvm, true);
1460         /* make sure we have no running tx while configuring the seqno */
1461         synchronize_net();
1462
1463         /* Flush the hw queues, in case something got queued during entry */
1464         /* TODO new tx api */
1465         if (iwl_mvm_has_new_tx_api(mvm)) {
1466                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1467         } else {
1468                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1469                                             flags);
1470                 if (ret)
1471                         return ret;
1472         }
1473
1474         /* configure wowlan configuration only if needed */
1475         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1476                 /* wake on beacons only if beacon storing isn't supported */
1477                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1478                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1479                         wowlan_config_cmd.wakeup_filter |=
1480                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1481
1482                 iwl_mvm_wowlan_config_key_params(mvm,
1483                                                  d0i3_iter_data.connected_vif,
1484                                                  true, flags);
1485
1486                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1487                                         &d0i3_iter_data);
1488
1489                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1490                                            sizeof(wowlan_config_cmd),
1491                                            &wowlan_config_cmd);
1492                 if (ret)
1493                         return ret;
1494         }
1495
1496         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1497                                     flags | CMD_MAKE_TRANS_IDLE,
1498                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1499 }
1500
1501 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1502                                        struct ieee80211_vif *vif)
1503 {
1504         struct iwl_mvm *mvm = _data;
1505         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1506
1507         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1508         if (vif->type != NL80211_IFTYPE_STATION ||
1509             !vif->bss_conf.assoc)
1510                 return;
1511
1512         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1513 }
1514
1515 struct iwl_mvm_d0i3_exit_work_iter_data {
1516         struct iwl_mvm *mvm;
1517         struct iwl_wowlan_status *status;
1518         u32 wakeup_reasons;
1519 };
1520
1521 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1522                                         struct ieee80211_vif *vif)
1523 {
1524         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1525         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1526         u32 reasons = data->wakeup_reasons;
1527
1528         /* consider only the relevant station interface */
1529         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1530             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1531                 return;
1532
1533         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1534                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1535         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1536                 ieee80211_beacon_loss(vif);
1537         else
1538                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1539 }
1540
1541 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1542 {
1543         struct ieee80211_sta *sta = NULL;
1544         struct iwl_mvm_sta *mvm_ap_sta;
1545         int i;
1546         bool wake_queues = false;
1547
1548         lockdep_assert_held(&mvm->mutex);
1549
1550         spin_lock_bh(&mvm->d0i3_tx_lock);
1551
1552         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1553                 goto out;
1554
1555         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1556
1557         /* get the sta in order to update seq numbers and re-enqueue skbs */
1558         sta = rcu_dereference_protected(
1559                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1560                         lockdep_is_held(&mvm->mutex));
1561
1562         if (IS_ERR_OR_NULL(sta)) {
1563                 sta = NULL;
1564                 goto out;
1565         }
1566
1567         if (mvm->d0i3_offloading && qos_seq) {
1568                 /* update qos seq numbers if offloading was enabled */
1569                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1570                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1571                         u16 seq = le16_to_cpu(qos_seq[i]);
1572                         /* firmware stores last-used one, we store next one */
1573                         seq += 0x10;
1574                         mvm_ap_sta->tid_data[i].seq_number = seq;
1575                 }
1576         }
1577 out:
1578         /* re-enqueue (or drop) all packets */
1579         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1580                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1581
1582                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1583                         ieee80211_free_txskb(mvm->hw, skb);
1584
1585                 /* if the skb_queue is not empty, we need to wake queues */
1586                 wake_queues = true;
1587         }
1588         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1589         wake_up(&mvm->d0i3_exit_waitq);
1590         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1591         if (wake_queues)
1592                 ieee80211_wake_queues(mvm->hw);
1593
1594         spin_unlock_bh(&mvm->d0i3_tx_lock);
1595 }
1596
1597 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1598 {
1599         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1600         struct iwl_host_cmd get_status_cmd = {
1601                 .id = WOWLAN_GET_STATUSES,
1602                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1603         };
1604         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1605                 .mvm = mvm,
1606         };
1607
1608         struct iwl_wowlan_status *status;
1609         int ret;
1610         u32 wakeup_reasons = 0;
1611         __le16 *qos_seq = NULL;
1612
1613         mutex_lock(&mvm->mutex);
1614         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1615         if (ret)
1616                 goto out;
1617
1618         status = (void *)get_status_cmd.resp_pkt->data;
1619         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1620         qos_seq = status->qos_seq_ctr;
1621
1622         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1623
1624         iter_data.wakeup_reasons = wakeup_reasons;
1625         iter_data.status = status;
1626         ieee80211_iterate_active_interfaces(mvm->hw,
1627                                             IEEE80211_IFACE_ITER_NORMAL,
1628                                             iwl_mvm_d0i3_exit_work_iter,
1629                                             &iter_data);
1630 out:
1631         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1632
1633         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1634                        wakeup_reasons);
1635
1636         /* qos_seq might point inside resp_pkt, so free it only now */
1637         if (get_status_cmd.resp_pkt)
1638                 iwl_free_resp(&get_status_cmd);
1639
1640         /* the FW might have updated the regdomain */
1641         iwl_mvm_update_changed_regdom(mvm);
1642
1643         iwl_mvm_resume_tcm(mvm);
1644         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1645         mutex_unlock(&mvm->mutex);
1646 }
1647
1648 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1649 {
1650         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1651                     CMD_WAKE_UP_TRANS;
1652         int ret;
1653
1654         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1655
1656         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1657                 return -EINVAL;
1658
1659         mutex_lock(&mvm->d0i3_suspend_mutex);
1660         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1661                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1662                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1663                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1664                 return 0;
1665         }
1666         mutex_unlock(&mvm->d0i3_suspend_mutex);
1667
1668         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1669         if (ret)
1670                 goto out;
1671
1672         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1673                                                    IEEE80211_IFACE_ITER_NORMAL,
1674                                                    iwl_mvm_exit_d0i3_iterator,
1675                                                    mvm);
1676 out:
1677         schedule_work(&mvm->d0i3_exit_work);
1678         return ret;
1679 }
1680
1681 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1682 {
1683         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1684
1685         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1686         return _iwl_mvm_exit_d0i3(mvm);
1687 }
1688
1689 #define IWL_MVM_COMMON_OPS                                      \
1690         /* these could be differentiated */                     \
1691         .async_cb = iwl_mvm_async_cb,                           \
1692         .queue_full = iwl_mvm_stop_sw_queue,                    \
1693         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1694         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1695         .free_skb = iwl_mvm_free_skb,                           \
1696         .nic_error = iwl_mvm_nic_error,                         \
1697         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1698         .nic_config = iwl_mvm_nic_config,                       \
1699         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1700         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1701         /* as we only register one, these MUST be common! */    \
1702         .start = iwl_op_mode_mvm_start,                         \
1703         .stop = iwl_op_mode_mvm_stop
1704
1705 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1706         IWL_MVM_COMMON_OPS,
1707         .rx = iwl_mvm_rx,
1708 };
1709
1710 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1711                               struct napi_struct *napi,
1712                               struct iwl_rx_cmd_buffer *rxb,
1713                               unsigned int queue)
1714 {
1715         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1716         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1717         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1718
1719         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1720                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1721         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1722                                          RX_QUEUES_NOTIFICATION)))
1723                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1724         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1725                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1726 }
1727
1728 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1729         IWL_MVM_COMMON_OPS,
1730         .rx = iwl_mvm_rx_mq,
1731         .rx_rss = iwl_mvm_rx_mq_rss,
1732 };