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  *
  21  * You should have received a copy of the GNU General Public License
  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-dbg.h"
  88 #include "fw-api.h"
  89 #include "fw-api-scan.h"
  90
  91 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  92 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  93 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  94 MODULE_LICENSE("GPL");
  95
  96 static const struct iwl_op_mode_ops iwl_mvm_ops;
  97 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  98
  99 struct iwl_mvm_mod_params iwlmvm_mod_params = {
 100         .power_scheme = IWL_POWER_SCHEME_BPS,
 101         .tfd_q_hang_detect = true
 102         /* rest of fields are 0 by default */
 103 };
 104
 105 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
 106 MODULE_PARM_DESC(init_dbg,
 107                  "set to true to debug an ASSERT in INIT fw (default: false");
 108 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
 109 MODULE_PARM_DESC(power_scheme,
 110                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 111 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 112                    bool, S_IRUGO);
 113 MODULE_PARM_DESC(tfd_q_hang_detect,
 114                  "TFD queues hang detection (default: true");
 115
 116 /*
 117  * module init and exit functions
 118  */
 119 static int __init iwl_mvm_init(void)
 120 {
 121         int ret;
 122
 123         ret = iwl_mvm_rate_control_register();
 124         if (ret) {
 125                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 126                 return ret;
 127         }
 128
 129         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 130
 131         if (ret) {
 132                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 133                 iwl_mvm_rate_control_unregister();
 134         }
 135
 136         return ret;
 137 }
 138 module_init(iwl_mvm_init);
 139
 140 static void __exit iwl_mvm_exit(void)
 141 {
 142         iwl_opmode_deregister("iwlmvm");
 143         iwl_mvm_rate_control_unregister();
 144 }
 145 module_exit(iwl_mvm_exit);
 146
 147 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 148 {
 149         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 150         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 151         u32 reg_val = 0;
 152         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 153
 154         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 155                          FW_PHY_CFG_RADIO_TYPE_POS;
 156         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 157                          FW_PHY_CFG_RADIO_STEP_POS;
 158         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 159                          FW_PHY_CFG_RADIO_DASH_POS;
 160
 161         /* SKU control */
 162         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 163                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 164         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 165                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 166
 167         /* radio configuration */
 168         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 169         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 170         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 171
 172         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 173                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 174
 175         /*
 176          * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
 177          * sampling, and shouldn't be set to any non-zero value.
 178          * The same is supposed to be true of the other HW, but unsetting
 179          * them (such as the 7260) causes automatic tests to fail on seemingly
 180          * unrelated errors. Need to further investigate this, but for now
 181          * we'll separate cases.
 182          */
 183         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 184                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 185
 186         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 187                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 190                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 191                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 192                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 193                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 194                                 reg_val);
 195
 196         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 197                        radio_cfg_step, radio_cfg_dash);
 198
 199         /*
 200          * W/A : NIC is stuck in a reset state after Early PCIe power off
 201          * (PCIe power is lost before PERST# is asserted), causing ME FW
 202          * to lose ownership and not being able to obtain it back.
 203          */
 204         if (!mvm->trans->cfg->apmg_not_supported)
 205                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 206                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 207                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 208 }
 209
 210 /**
 211  * enum iwl_rx_handler_context context for Rx handler
 212  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 213  *      which can't acquire mvm->mutex.
 214  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 215  *      (and only in this case!), it should be set as ASYNC. In that case,
 216  *      it will be called from a worker with mvm->mutex held.
 217  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 218  *      mutex itself, it will be called from a worker without mvm->mutex held.
 219  */
 220 enum iwl_rx_handler_context {
 221         RX_HANDLER_SYNC,
 222         RX_HANDLER_ASYNC_LOCKED,
 223         RX_HANDLER_ASYNC_UNLOCKED,
 224 };
 225
 226 /**
 227  * struct iwl_rx_handlers handler for FW notification
 228  * @cmd_id: command id
 229  * @context: see &iwl_rx_handler_context
 230  * @fn: the function is called when notification is received
 231  */
 232 struct iwl_rx_handlers {
 233         u16 cmd_id;
 234         enum iwl_rx_handler_context context;
 235         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 236 };
 237
 238 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 239         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 240 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 241         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 242
 243 /*
 244  * Handlers for fw notifications
 245  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 246  * This list should be in order of frequency for performance purposes.
 247  *
 248  * The handler can be one from three contexts, see &iwl_rx_handler_context
 249  */
 250 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 251         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 252         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 253
 254         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 255                    RX_HANDLER_ASYNC_LOCKED),
 256         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 257                    RX_HANDLER_ASYNC_LOCKED),
 258         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 259                    RX_HANDLER_ASYNC_LOCKED),
 260         RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
 261                    iwl_mvm_rx_ant_coupling_notif, 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(ANTENNA_COUPLING_NOTIFICATION),
 330         HCMD_NAME(SCAN_CFG_CMD),
 331         HCMD_NAME(SCAN_REQ_UMAC),
 332         HCMD_NAME(SCAN_ABORT_UMAC),
 333         HCMD_NAME(SCAN_COMPLETE_UMAC),
 334         HCMD_NAME(TOF_CMD),
 335         HCMD_NAME(TOF_NOTIFICATION),
 336         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 337         HCMD_NAME(ADD_STA_KEY),
 338         HCMD_NAME(ADD_STA),
 339         HCMD_NAME(REMOVE_STA),
 340         HCMD_NAME(FW_GET_ITEM_CMD),
 341         HCMD_NAME(TX_CMD),
 342         HCMD_NAME(SCD_QUEUE_CFG),
 343         HCMD_NAME(TXPATH_FLUSH),
 344         HCMD_NAME(MGMT_MCAST_KEY),
 345         HCMD_NAME(WEP_KEY),
 346         HCMD_NAME(SHARED_MEM_CFG),
 347         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 348         HCMD_NAME(MAC_CONTEXT_CMD),
 349         HCMD_NAME(TIME_EVENT_CMD),
 350         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 351         HCMD_NAME(BINDING_CONTEXT_CMD),
 352         HCMD_NAME(TIME_QUOTA_CMD),
 353         HCMD_NAME(NON_QOS_TX_COUNTER_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_CORUN_LUT),
 361         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 362         HCMD_NAME(BT_COEX_CI),
 363         HCMD_NAME(PHY_CONFIGURATION_CMD),
 364         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 365         HCMD_NAME(PHY_DB_CMD),
 366         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 367         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 368         HCMD_NAME(POWER_TABLE_CMD),
 369         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 370         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 371         HCMD_NAME(DC2DC_CONFIG_CMD),
 372         HCMD_NAME(NVM_ACCESS_CMD),
 373         HCMD_NAME(BEACON_NOTIFICATION),
 374         HCMD_NAME(BEACON_TEMPLATE_CMD),
 375         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 376         HCMD_NAME(BT_CONFIG),
 377         HCMD_NAME(STATISTICS_CMD),
 378         HCMD_NAME(STATISTICS_NOTIFICATION),
 379         HCMD_NAME(EOSP_NOTIFICATION),
 380         HCMD_NAME(REDUCE_TX_POWER_CMD),
 381         HCMD_NAME(CARD_STATE_NOTIFICATION),
 382         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 383         HCMD_NAME(TDLS_CONFIG_CMD),
 384         HCMD_NAME(MAC_PM_POWER_TABLE),
 385         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 386         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 387         HCMD_NAME(RSS_CONFIG_CMD),
 388         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 389         HCMD_NAME(REPLY_RX_PHY_CMD),
 390         HCMD_NAME(REPLY_RX_MPDU_CMD),
 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(LINK_QUALITY_MEASUREMENT_CMD),
 430         HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
 431         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 432 };
 433
 434 /* Please keep this array *SORTED* by hex value.
 435  * Access is done through binary search
 436  */
 437 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 438         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 439         HCMD_NAME(CTDP_CONFIG_CMD),
 440         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 441         HCMD_NAME(GEO_TX_POWER_LIMIT),
 442         HCMD_NAME(CT_KILL_NOTIFICATION),
 443         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 444 };
 445
 446 /* Please keep this array *SORTED* by hex value.
 447  * Access is done through binary search
 448  */
 449 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 450         HCMD_NAME(DQA_ENABLE_CMD),
 451         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 452         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_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 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
 497 {
 498         const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
 499
 500         if (!pwr_tx_backoff)
 501                 return 0;
 502
 503         while (pwr_tx_backoff->pwr) {
 504                 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
 505                         return pwr_tx_backoff->backoff;
 506
 507                 pwr_tx_backoff++;
 508         }
 509
 510         return 0;
 511 }
 512
 513 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
 514
 515 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 516 {
 517         struct iwl_mvm *mvm =
 518                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 519         struct ieee80211_vif *tx_blocked_vif;
 520         struct iwl_mvm_vif *mvmvif;
 521
 522         mutex_lock(&mvm->mutex);
 523
 524         tx_blocked_vif =
 525                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 526                                           lockdep_is_held(&mvm->mutex));
 527
 528         if (!tx_blocked_vif)
 529                 goto unlock;
 530
 531         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 532         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 533         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 534 unlock:
 535         mutex_unlock(&mvm->mutex);
 536 }
 537
 538 static struct iwl_op_mode *
 539 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 540                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 541 {
 542         struct ieee80211_hw *hw;
 543         struct iwl_op_mode *op_mode;
 544         struct iwl_mvm *mvm;
 545         struct iwl_trans_config trans_cfg = {};
 546         static const u8 no_reclaim_cmds[] = {
 547                 TX_CMD,
 548         };
 549         int err, scan_size;
 550         u32 min_backoff;
 551
 552         /*
 553          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 554          * index all over the driver - check that its value corresponds to the
 555          * array size.
 556          */
 557         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 558
 559         /********************************
 560          * 1. Allocating and configuring HW data
 561          ********************************/
 562         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 563                                 sizeof(struct iwl_mvm),
 564                                 &iwl_mvm_hw_ops);
 565         if (!hw)
 566                 return NULL;
 567
 568         if (cfg->max_rx_agg_size)
 569                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 570
 571         if (cfg->max_tx_agg_size)
 572                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 573
 574         op_mode = hw->priv;
 575
 576         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 577         mvm->dev = trans->dev;
 578         mvm->trans = trans;
 579         mvm->cfg = cfg;
 580         mvm->fw = fw;
 581         mvm->hw = hw;
 582
 583         mvm->init_status = 0;
 584
 585         if (iwl_mvm_has_new_rx_api(mvm)) {
 586                 op_mode->ops = &iwl_mvm_ops_mq;
 587                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 588         } else {
 589                 op_mode->ops = &iwl_mvm_ops;
 590                 trans->rx_mpdu_cmd_hdr_size =
 591                         sizeof(struct iwl_rx_mpdu_res_start);
 592
 593                 if (WARN_ON(trans->num_rx_queues > 1))
 594                         goto out_free;
 595         }
 596
 597         mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 598
 599         if (!iwl_mvm_is_dqa_supported(mvm)) {
 600                 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
 601
 602                 if (mvm->cfg->base_params->num_of_queues == 16) {
 603                         mvm->aux_queue = 11;
 604                         mvm->first_agg_queue = 12;
 605                         BUILD_BUG_ON(BITS_PER_BYTE *
 606                                      sizeof(mvm->hw_queue_to_mac80211[0]) < 12);
 607                 } else {
 608                         mvm->aux_queue = 15;
 609                         mvm->first_agg_queue = 16;
 610                         BUILD_BUG_ON(BITS_PER_BYTE *
 611                                      sizeof(mvm->hw_queue_to_mac80211[0]) < 16);
 612                 }
 613         } else {
 614                 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 615                 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 616                 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 617                 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
 618                 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
 619         }
 620         mvm->sf_state = SF_UNINIT;
 621         if (iwl_mvm_has_new_tx_api(mvm))
 622                 mvm->cur_ucode = IWL_UCODE_REGULAR;
 623         else
 624                 mvm->cur_ucode = IWL_UCODE_INIT;
 625         mvm->drop_bcn_ap_mode = true;
 626
 627         mutex_init(&mvm->mutex);
 628         mutex_init(&mvm->d0i3_suspend_mutex);
 629         spin_lock_init(&mvm->async_handlers_lock);
 630         INIT_LIST_HEAD(&mvm->time_event_list);
 631         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 632         INIT_LIST_HEAD(&mvm->async_handlers_list);
 633         spin_lock_init(&mvm->time_event_lock);
 634         spin_lock_init(&mvm->queue_info_lock);
 635
 636         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 637         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 638         INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
 639         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 640         INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
 641         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 642         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 643         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 644
 645         spin_lock_init(&mvm->d0i3_tx_lock);
 646         spin_lock_init(&mvm->refs_lock);
 647         skb_queue_head_init(&mvm->d0i3_tx);
 648         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 649         init_waitqueue_head(&mvm->rx_sync_waitq);
 650
 651         atomic_set(&mvm->queue_sync_counter, 0);
 652
 653         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 654
 655         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 656
 657         /*
 658          * Populate the state variables that the transport layer needs
 659          * to know about.
 660          */
 661         trans_cfg.op_mode = op_mode;
 662         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 663         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 664         switch (iwlwifi_mod_params.amsdu_size) {
 665         case IWL_AMSDU_DEF:
 666         case IWL_AMSDU_4K:
 667                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 668                 break;
 669         case IWL_AMSDU_8K:
 670                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 671                 break;
 672         case IWL_AMSDU_12K:
 673                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 674                 break;
 675         default:
 676                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 677                        iwlwifi_mod_params.amsdu_size);
 678                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 679         }
 680
 681         /* the hardware splits the A-MSDU */
 682         if (mvm->cfg->mq_rx_supported)
 683                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 684
 685         trans->wide_cmd_header = true;
 686         trans_cfg.bc_table_dword = true;
 687
 688         trans_cfg.command_groups = iwl_mvm_groups;
 689         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 690
 691         if (iwl_mvm_is_dqa_supported(mvm))
 692                 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 693         else
 694                 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 695         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 696         trans_cfg.scd_set_active = true;
 697
 698         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 699                                           driver_data[2]);
 700
 701         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 702         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 703
 704         /* Set a short watchdog for the command queue */
 705         trans_cfg.cmd_q_wdg_timeout =
 706                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 707
 708         snprintf(mvm->hw->wiphy->fw_version,
 709                  sizeof(mvm->hw->wiphy->fw_version),
 710                  "%s", fw->fw_version);
 711
 712         /* Configure transport layer */
 713         iwl_trans_configure(mvm->trans, &trans_cfg);
 714
 715         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 716         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 717         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 718         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 719                sizeof(trans->dbg_conf_tlv));
 720         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 721
 722         /* set up notification wait support */
 723         iwl_notification_wait_init(&mvm->notif_wait);
 724
 725         /* Init phy db */
 726         mvm->phy_db = iwl_phy_db_init(trans);
 727         if (!mvm->phy_db) {
 728                 IWL_ERR(mvm, "Cannot init phy_db\n");
 729                 goto out_free;
 730         }
 731
 732         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 733                  mvm->cfg->name, mvm->trans->hw_rev);
 734
 735         if (iwlwifi_mod_params.nvm_file)
 736                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 737         else
 738                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 739                                  "working without external nvm file\n");
 740
 741         err = iwl_trans_start_hw(mvm->trans);
 742         if (err)
 743                 goto out_free;
 744
 745         mutex_lock(&mvm->mutex);
 746         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 747         err = iwl_run_init_mvm_ucode(mvm, true);
 748         if (!iwlmvm_mod_params.init_dbg)
 749                 iwl_mvm_stop_device(mvm);
 750         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 751         mutex_unlock(&mvm->mutex);
 752         /* returns 0 if successful, 1 if success but in rfkill */
 753         if (err < 0) {
 754                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 755                 goto out_free;
 756         }
 757
 758         scan_size = iwl_mvm_scan_size(mvm);
 759
 760         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 761         if (!mvm->scan_cmd)
 762                 goto out_free;
 763
 764         /* Set EBS as successful as long as not stated otherwise by the FW. */
 765         mvm->last_ebs_successful = true;
 766
 767         err = iwl_mvm_mac_setup_register(mvm);
 768         if (err)
 769                 goto out_free;
 770         mvm->hw_registered = true;
 771
 772         min_backoff = calc_min_backoff(trans, cfg);
 773         iwl_mvm_thermal_initialize(mvm, min_backoff);
 774
 775         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 776         if (err)
 777                 goto out_unregister;
 778
 779         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 780                 memset(&mvm->rx_stats_v3, 0,
 781                        sizeof(struct mvm_statistics_rx_v3));
 782         else
 783                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 784
 785         /* The transport always starts with a taken reference, we can
 786          * release it now if d0i3 is supported */
 787         if (iwl_mvm_is_d0i3_supported(mvm))
 788                 iwl_trans_unref(mvm->trans);
 789
 790         iwl_mvm_tof_init(mvm);
 791
 792         return op_mode;
 793
 794  out_unregister:
 795         if (iwlmvm_mod_params.init_dbg)
 796                 return op_mode;
 797
 798         ieee80211_unregister_hw(mvm->hw);
 799         mvm->hw_registered = false;
 800         iwl_mvm_leds_exit(mvm);
 801         iwl_mvm_thermal_exit(mvm);
 802  out_free:
 803         flush_delayed_work(&mvm->fw_dump_wk);
 804
 805         if (iwlmvm_mod_params.init_dbg)
 806                 return op_mode;
 807         iwl_phy_db_free(mvm->phy_db);
 808         kfree(mvm->scan_cmd);
 809         iwl_trans_op_mode_leave(trans);
 810
 811         ieee80211_free_hw(mvm->hw);
 812         return NULL;
 813 }
 814
 815 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 816 {
 817         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 818         int i;
 819
 820         /* If d0i3 is supported, we have released the reference that
 821          * the transport started with, so we should take it back now
 822          * that we are leaving.
 823          */
 824         if (iwl_mvm_is_d0i3_supported(mvm))
 825                 iwl_trans_ref(mvm->trans);
 826
 827         iwl_mvm_leds_exit(mvm);
 828
 829         iwl_mvm_thermal_exit(mvm);
 830
 831         if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
 832                 ieee80211_unregister_hw(mvm->hw);
 833                 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 834         }
 835
 836         kfree(mvm->scan_cmd);
 837         kfree(mvm->mcast_filter_cmd);
 838         mvm->mcast_filter_cmd = NULL;
 839
 840 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 841         kfree(mvm->d3_resume_sram);
 842 #endif
 843
 844         iwl_trans_op_mode_leave(mvm->trans);
 845
 846         iwl_phy_db_free(mvm->phy_db);
 847         mvm->phy_db = NULL;
 848
 849         kfree(mvm->nvm_data);
 850         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 851                 kfree(mvm->nvm_sections[i].data);
 852
 853         iwl_mvm_tof_clean(mvm);
 854
 855         mutex_destroy(&mvm->mutex);
 856         mutex_destroy(&mvm->d0i3_suspend_mutex);
 857
 858         ieee80211_free_hw(mvm->hw);
 859 }
 860
 861 struct iwl_async_handler_entry {
 862         struct list_head list;
 863         struct iwl_rx_cmd_buffer rxb;
 864         enum iwl_rx_handler_context context;
 865         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 866 };
 867
 868 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 869 {
 870         struct iwl_async_handler_entry *entry, *tmp;
 871
 872         spin_lock_bh(&mvm->async_handlers_lock);
 873         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 874                 iwl_free_rxb(&entry->rxb);
 875                 list_del(&entry->list);
 876                 kfree(entry);
 877         }
 878         spin_unlock_bh(&mvm->async_handlers_lock);
 879 }
 880
 881 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 882 {
 883         struct iwl_mvm *mvm =
 884                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 885         struct iwl_async_handler_entry *entry, *tmp;
 886         LIST_HEAD(local_list);
 887
 888         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 889
 890         /*
 891          * Sync with Rx path with a lock. Remove all the entries from this list,
 892          * add them to a local one (lock free), and then handle them.
 893          */
 894         spin_lock_bh(&mvm->async_handlers_lock);
 895         list_splice_init(&mvm->async_handlers_list, &local_list);
 896         spin_unlock_bh(&mvm->async_handlers_lock);
 897
 898         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 899                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 900                         mutex_lock(&mvm->mutex);
 901                 entry->fn(mvm, &entry->rxb);
 902                 iwl_free_rxb(&entry->rxb);
 903                 list_del(&entry->list);
 904                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 905                         mutex_unlock(&mvm->mutex);
 906                 kfree(entry);
 907         }
 908 }
 909
 910 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 911                                             struct iwl_rx_packet *pkt)
 912 {
 913         struct iwl_fw_dbg_trigger_tlv *trig;
 914         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 915         int i;
 916
 917         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 918                 return;
 919
 920         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 921         cmds_trig = (void *)trig->data;
 922
 923         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 924                 return;
 925
 926         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 927                 /* don't collect on CMD 0 */
 928                 if (!cmds_trig->cmds[i].cmd_id)
 929                         break;
 930
 931                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 932                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 933                         continue;
 934
 935                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 936                                             "CMD 0x%02x.%02x received",
 937                                             pkt->hdr.group_id, pkt->hdr.cmd);
 938                 break;
 939         }
 940 }
 941
 942 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 943                               struct iwl_rx_cmd_buffer *rxb,
 944                               struct iwl_rx_packet *pkt)
 945 {
 946         int i;
 947
 948         iwl_mvm_rx_check_trigger(mvm, pkt);
 949
 950         /*
 951          * Do the notification wait before RX handlers so
 952          * even if the RX handler consumes the RXB we have
 953          * access to it in the notification wait entry.
 954          */
 955         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 956
 957         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 958                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 959                 struct iwl_async_handler_entry *entry;
 960
 961                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 962                         continue;
 963
 964                 if (rx_h->context == RX_HANDLER_SYNC) {
 965                         rx_h->fn(mvm, rxb);
 966                         return;
 967                 }
 968
 969                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 970                 /* we can't do much... */
 971                 if (!entry)
 972                         return;
 973
 974                 entry->rxb._page = rxb_steal_page(rxb);
 975                 entry->rxb._offset = rxb->_offset;
 976                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 977                 entry->fn = rx_h->fn;
 978                 entry->context = rx_h->context;
 979                 spin_lock(&mvm->async_handlers_lock);
 980                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 981                 spin_unlock(&mvm->async_handlers_lock);
 982                 schedule_work(&mvm->async_handlers_wk);
 983                 break;
 984         }
 985 }
 986
 987 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 988                        struct napi_struct *napi,
 989                        struct iwl_rx_cmd_buffer *rxb)
 990 {
 991         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 992         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 993         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
 994
 995         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
 996                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 997         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
 998                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 999         else
1000                 iwl_mvm_rx_common(mvm, rxb, pkt);
1001 }
1002
1003 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1004                           struct napi_struct *napi,
1005                           struct iwl_rx_cmd_buffer *rxb)
1006 {
1007         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1008         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1009         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1010
1011         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1012                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1013         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1014                                          RX_QUEUES_NOTIFICATION)))
1015                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1016         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1017                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1018         else
1019                 iwl_mvm_rx_common(mvm, rxb, pkt);
1020 }
1021
1022 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1023 {
1024         int q;
1025
1026         if (WARN_ON_ONCE(!mq))
1027                 return;
1028
1029         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1030                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1031                         IWL_DEBUG_TX_QUEUES(mvm,
1032                                             "mac80211 %d already stopped\n", q);
1033                         continue;
1034                 }
1035
1036                 ieee80211_stop_queue(mvm->hw, q);
1037         }
1038 }
1039
1040 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1041                              const struct iwl_device_cmd *cmd)
1042 {
1043         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1044
1045         /*
1046          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1047          * commands that need to block the Tx queues.
1048          */
1049         iwl_trans_block_txq_ptrs(mvm->trans, false);
1050 }
1051
1052 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1053 {
1054         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1055         unsigned long mq;
1056
1057         spin_lock_bh(&mvm->queue_info_lock);
1058         mq = mvm->hw_queue_to_mac80211[hw_queue];
1059         spin_unlock_bh(&mvm->queue_info_lock);
1060
1061         iwl_mvm_stop_mac_queues(mvm, mq);
1062 }
1063
1064 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1065 {
1066         int q;
1067
1068         if (WARN_ON_ONCE(!mq))
1069                 return;
1070
1071         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1072                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1073                         IWL_DEBUG_TX_QUEUES(mvm,
1074                                             "mac80211 %d still stopped\n", q);
1075                         continue;
1076                 }
1077
1078                 ieee80211_wake_queue(mvm->hw, q);
1079         }
1080 }
1081
1082 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1083 {
1084         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1085         unsigned long mq;
1086
1087         spin_lock_bh(&mvm->queue_info_lock);
1088         mq = mvm->hw_queue_to_mac80211[hw_queue];
1089         spin_unlock_bh(&mvm->queue_info_lock);
1090
1091         iwl_mvm_start_mac_queues(mvm, mq);
1092 }
1093
1094 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1095 {
1096         bool state = iwl_mvm_is_radio_killed(mvm);
1097
1098         if (state)
1099                 wake_up(&mvm->rx_sync_waitq);
1100
1101         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1102 }
1103
1104 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1105 {
1106         if (state)
1107                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1108         else
1109                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1110
1111         iwl_mvm_set_rfkill_state(mvm);
1112 }
1113
1114 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1115 {
1116         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1117         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1118
1119         if (state)
1120                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1121         else
1122                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1123
1124         iwl_mvm_set_rfkill_state(mvm);
1125
1126         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1127         if (calibrating)
1128                 iwl_abort_notification_waits(&mvm->notif_wait);
1129
1130         /*
1131          * Stop the device if we run OPERATIONAL firmware or if we are in the
1132          * middle of the calibrations.
1133          */
1134         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1135 }
1136
1137 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1138 {
1139         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1140         struct ieee80211_tx_info *info;
1141
1142         info = IEEE80211_SKB_CB(skb);
1143         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1144         ieee80211_free_txskb(mvm->hw, skb);
1145 }
1146
1147 struct iwl_mvm_reprobe {
1148         struct device *dev;
1149         struct work_struct work;
1150 };
1151
1152 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1153 {
1154         struct iwl_mvm_reprobe *reprobe;
1155
1156         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1157         if (device_reprobe(reprobe->dev))
1158                 dev_err(reprobe->dev, "reprobe failed!\n");
1159         kfree(reprobe);
1160         module_put(THIS_MODULE);
1161 }
1162
1163 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1164 {
1165         struct iwl_mvm *mvm =
1166                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1167
1168         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1169                 return;
1170
1171         mutex_lock(&mvm->mutex);
1172
1173         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1174                 /* stop recording */
1175                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1176
1177                 iwl_mvm_fw_error_dump(mvm);
1178
1179                 /* start recording again if the firmware is not crashed */
1180                 if (!test_bit(STATUS_FW_ERROR, &mvm->trans->status) &&
1181                     mvm->fw->dbg_dest_tlv) {
1182                         iwl_clear_bits_prph(mvm->trans,
1183                                             MON_BUFF_SAMPLE_CTL, 0x100);
1184                         iwl_clear_bits_prph(mvm->trans,
1185                                             MON_BUFF_SAMPLE_CTL, 0x1);
1186                         iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x1);
1187                 }
1188         } else {
1189                 u32 in_sample = iwl_read_prph(mvm->trans, DBGC_IN_SAMPLE);
1190                 u32 out_ctrl = iwl_read_prph(mvm->trans, DBGC_OUT_CTRL);
1191
1192                 /* stop recording */
1193                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1194                 udelay(100);
1195                 iwl_write_prph(mvm->trans, DBGC_OUT_CTRL, 0);
1196                 /* wait before we collect the data till the DBGC stop */
1197                 udelay(500);
1198
1199                 iwl_mvm_fw_error_dump(mvm);
1200
1201                 /* start recording again if the firmware is not crashed */
1202                 if (!test_bit(STATUS_FW_ERROR, &mvm->trans->status) &&
1203                     mvm->fw->dbg_dest_tlv) {
1204                         iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, in_sample);
1205                         iwl_write_prph(mvm->trans, DBGC_OUT_CTRL, out_ctrl);
1206                 }
1207         }
1208
1209         mutex_unlock(&mvm->mutex);
1210
1211         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1212 }
1213
1214 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1215 {
1216         iwl_abort_notification_waits(&mvm->notif_wait);
1217
1218         /*
1219          * This is a bit racy, but worst case we tell mac80211 about
1220          * a stopped/aborted scan when that was already done which
1221          * is not a problem. It is necessary to abort any os scan
1222          * here because mac80211 requires having the scan cleared
1223          * before restarting.
1224          * We'll reset the scan_status to NONE in restart cleanup in
1225          * the next start() call from mac80211. If restart isn't called
1226          * (no fw restart) scan status will stay busy.
1227          */
1228         iwl_mvm_report_scan_aborted(mvm);
1229
1230         /*
1231          * If we're restarting already, don't cycle restarts.
1232          * If INIT fw asserted, it will likely fail again.
1233          * If WoWLAN fw asserted, don't restart either, mac80211
1234          * can't recover this since we're already half suspended.
1235          */
1236         if (!mvm->fw_restart && fw_error) {
1237                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1238                                         NULL);
1239         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1240                 struct iwl_mvm_reprobe *reprobe;
1241
1242                 IWL_ERR(mvm,
1243                         "Firmware error during reconfiguration - reprobe!\n");
1244
1245                 /*
1246                  * get a module reference to avoid doing this while unloading
1247                  * anyway and to avoid scheduling a work with code that's
1248                  * being removed.
1249                  */
1250                 if (!try_module_get(THIS_MODULE)) {
1251                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1252                         return;
1253                 }
1254
1255                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1256                 if (!reprobe) {
1257                         module_put(THIS_MODULE);
1258                         return;
1259                 }
1260                 reprobe->dev = mvm->trans->dev;
1261                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1262                 schedule_work(&reprobe->work);
1263         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
1264                    mvm->hw_registered) {
1265                 /* don't let the transport/FW power down */
1266                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1267
1268                 if (fw_error && mvm->fw_restart > 0)
1269                         mvm->fw_restart--;
1270                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1271                 ieee80211_restart_hw(mvm->hw);
1272         }
1273 }
1274
1275 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1276 {
1277         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1278
1279         iwl_mvm_dump_nic_error_log(mvm);
1280
1281         iwl_mvm_nic_restart(mvm, true);
1282 }
1283
1284 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1285 {
1286         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1287
1288         WARN_ON(1);
1289         iwl_mvm_nic_restart(mvm, true);
1290 }
1291
1292 struct iwl_d0i3_iter_data {
1293         struct iwl_mvm *mvm;
1294         struct ieee80211_vif *connected_vif;
1295         u8 ap_sta_id;
1296         u8 vif_count;
1297         u8 offloading_tid;
1298         bool disable_offloading;
1299 };
1300
1301 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1302                                         struct ieee80211_vif *vif,
1303                                         struct iwl_d0i3_iter_data *iter_data)
1304 {
1305         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1306         struct iwl_mvm_sta *mvmsta;
1307         u32 available_tids = 0;
1308         u8 tid;
1309
1310         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1311                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1312                 return false;
1313
1314         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1315         if (!mvmsta)
1316                 return false;
1317
1318         spin_lock_bh(&mvmsta->lock);
1319         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1320                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1321
1322                 /*
1323                  * in case of pending tx packets, don't use this tid
1324                  * for offloading in order to prevent reuse of the same
1325                  * qos seq counters.
1326                  */
1327                 if (iwl_mvm_tid_queued(mvm, tid_data))
1328                         continue;
1329
1330                 if (tid_data->state != IWL_AGG_OFF)
1331                         continue;
1332
1333                 available_tids |= BIT(tid);
1334         }
1335         spin_unlock_bh(&mvmsta->lock);
1336
1337         /*
1338          * disallow protocol offloading if we have no available tid
1339          * (with no pending frames and no active aggregation,
1340          * as we don't handle "holes" properly - the scheduler needs the
1341          * frame's seq number and TFD index to match)
1342          */
1343         if (!available_tids)
1344                 return true;
1345
1346         /* for simplicity, just use the first available tid */
1347         iter_data->offloading_tid = ffs(available_tids) - 1;
1348         return false;
1349 }
1350
1351 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1352                                         struct ieee80211_vif *vif)
1353 {
1354         struct iwl_d0i3_iter_data *data = _data;
1355         struct iwl_mvm *mvm = data->mvm;
1356         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1357         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1358
1359         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1360         if (vif->type != NL80211_IFTYPE_STATION ||
1361             !vif->bss_conf.assoc)
1362                 return;
1363
1364         /*
1365          * in case of pending tx packets or active aggregations,
1366          * avoid offloading features in order to prevent reuse of
1367          * the same qos seq counters.
1368          */
1369         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1370                 data->disable_offloading = true;
1371
1372         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1373         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1374                                    false, flags);
1375
1376         /*
1377          * on init/association, mvm already configures POWER_TABLE_CMD
1378          * and REPLY_MCAST_FILTER_CMD, so currently don't
1379          * reconfigure them (we might want to use different
1380          * params later on, though).
1381          */
1382         data->ap_sta_id = mvmvif->ap_sta_id;
1383         data->vif_count++;
1384
1385         /*
1386          * no new commands can be sent at this stage, so it's safe
1387          * to save the vif pointer during d0i3 entrance.
1388          */
1389         data->connected_vif = vif;
1390 }
1391
1392 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1393                                     struct iwl_wowlan_config_cmd *cmd,
1394                                     struct iwl_d0i3_iter_data *iter_data)
1395 {
1396         struct ieee80211_sta *ap_sta;
1397         struct iwl_mvm_sta *mvm_ap_sta;
1398
1399         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1400                 return;
1401
1402         rcu_read_lock();
1403
1404         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1405         if (IS_ERR_OR_NULL(ap_sta))
1406                 goto out;
1407
1408         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1409         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1410         cmd->offloading_tid = iter_data->offloading_tid;
1411         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1412                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1413         /*
1414          * The d0i3 uCode takes care of the nonqos counters,
1415          * so configure only the qos seq ones.
1416          */
1417         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1418 out:
1419         rcu_read_unlock();
1420 }
1421
1422 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1423 {
1424         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1425         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1426         int ret;
1427         struct iwl_d0i3_iter_data d0i3_iter_data = {
1428                 .mvm = mvm,
1429         };
1430         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1431                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1432                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1433                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1434         };
1435         struct iwl_d3_manager_config d3_cfg_cmd = {
1436                 .min_sleep_time = cpu_to_le32(1000),
1437                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1438         };
1439
1440         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1441
1442         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1443                 return -EINVAL;
1444
1445         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1446
1447         /*
1448          * iwl_mvm_ref_sync takes a reference before checking the flag.
1449          * so by checking there is no held reference we prevent a state
1450          * in which iwl_mvm_ref_sync continues successfully while we
1451          * configure the firmware to enter d0i3
1452          */
1453         if (iwl_mvm_ref_taken(mvm)) {
1454                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1455                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1456                 wake_up(&mvm->d0i3_exit_waitq);
1457                 return 1;
1458         }
1459
1460         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1461                                                    IEEE80211_IFACE_ITER_NORMAL,
1462                                                    iwl_mvm_enter_d0i3_iterator,
1463                                                    &d0i3_iter_data);
1464         if (d0i3_iter_data.vif_count == 1) {
1465                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1466                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1467         } else {
1468                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1469                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1470                 mvm->d0i3_offloading = false;
1471         }
1472
1473         /* make sure we have no running tx while configuring the seqno */
1474         synchronize_net();
1475
1476         /* Flush the hw queues, in case something got queued during entry */
1477         /* TODO new tx api */
1478         if (iwl_mvm_has_new_tx_api(mvm)) {
1479                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1480         } else {
1481                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1482                                             flags);
1483                 if (ret)
1484                         return ret;
1485         }
1486
1487         /* configure wowlan configuration only if needed */
1488         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1489                 /* wake on beacons only if beacon storing isn't supported */
1490                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1491                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1492                         wowlan_config_cmd.wakeup_filter |=
1493                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1494
1495                 iwl_mvm_wowlan_config_key_params(mvm,
1496                                                  d0i3_iter_data.connected_vif,
1497                                                  true, flags);
1498
1499                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1500                                         &d0i3_iter_data);
1501
1502                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1503                                            sizeof(wowlan_config_cmd),
1504                                            &wowlan_config_cmd);
1505                 if (ret)
1506                         return ret;
1507         }
1508
1509         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1510                                     flags | CMD_MAKE_TRANS_IDLE,
1511                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1512 }
1513
1514 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1515                                        struct ieee80211_vif *vif)
1516 {
1517         struct iwl_mvm *mvm = _data;
1518         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1519
1520         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1521         if (vif->type != NL80211_IFTYPE_STATION ||
1522             !vif->bss_conf.assoc)
1523                 return;
1524
1525         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1526 }
1527
1528 struct iwl_mvm_d0i3_exit_work_iter_data {
1529         struct iwl_mvm *mvm;
1530         struct iwl_wowlan_status *status;
1531         u32 wakeup_reasons;
1532 };
1533
1534 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1535                                         struct ieee80211_vif *vif)
1536 {
1537         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1538         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1539         u32 reasons = data->wakeup_reasons;
1540
1541         /* consider only the relevant station interface */
1542         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1543             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1544                 return;
1545
1546         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1547                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1548         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1549                 ieee80211_beacon_loss(vif);
1550         else
1551                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1552 }
1553
1554 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1555 {
1556         struct ieee80211_sta *sta = NULL;
1557         struct iwl_mvm_sta *mvm_ap_sta;
1558         int i;
1559         bool wake_queues = false;
1560
1561         lockdep_assert_held(&mvm->mutex);
1562
1563         spin_lock_bh(&mvm->d0i3_tx_lock);
1564
1565         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1566                 goto out;
1567
1568         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1569
1570         /* get the sta in order to update seq numbers and re-enqueue skbs */
1571         sta = rcu_dereference_protected(
1572                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1573                         lockdep_is_held(&mvm->mutex));
1574
1575         if (IS_ERR_OR_NULL(sta)) {
1576                 sta = NULL;
1577                 goto out;
1578         }
1579
1580         if (mvm->d0i3_offloading && qos_seq) {
1581                 /* update qos seq numbers if offloading was enabled */
1582                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1583                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1584                         u16 seq = le16_to_cpu(qos_seq[i]);
1585                         /* firmware stores last-used one, we store next one */
1586                         seq += 0x10;
1587                         mvm_ap_sta->tid_data[i].seq_number = seq;
1588                 }
1589         }
1590 out:
1591         /* re-enqueue (or drop) all packets */
1592         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1593                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1594
1595                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1596                         ieee80211_free_txskb(mvm->hw, skb);
1597
1598                 /* if the skb_queue is not empty, we need to wake queues */
1599                 wake_queues = true;
1600         }
1601         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1602         wake_up(&mvm->d0i3_exit_waitq);
1603         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1604         if (wake_queues)
1605                 ieee80211_wake_queues(mvm->hw);
1606
1607         spin_unlock_bh(&mvm->d0i3_tx_lock);
1608 }
1609
1610 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1611 {
1612         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1613         struct iwl_host_cmd get_status_cmd = {
1614                 .id = WOWLAN_GET_STATUSES,
1615                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1616         };
1617         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1618                 .mvm = mvm,
1619         };
1620
1621         struct iwl_wowlan_status *status;
1622         int ret;
1623         u32 wakeup_reasons = 0;
1624         __le16 *qos_seq = NULL;
1625
1626         mutex_lock(&mvm->mutex);
1627         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1628         if (ret)
1629                 goto out;
1630
1631         status = (void *)get_status_cmd.resp_pkt->data;
1632         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1633         qos_seq = status->qos_seq_ctr;
1634
1635         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1636
1637         iter_data.wakeup_reasons = wakeup_reasons;
1638         iter_data.status = status;
1639         ieee80211_iterate_active_interfaces(mvm->hw,
1640                                             IEEE80211_IFACE_ITER_NORMAL,
1641                                             iwl_mvm_d0i3_exit_work_iter,
1642                                             &iter_data);
1643 out:
1644         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1645
1646         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1647                        wakeup_reasons);
1648
1649         /* qos_seq might point inside resp_pkt, so free it only now */
1650         if (get_status_cmd.resp_pkt)
1651                 iwl_free_resp(&get_status_cmd);
1652
1653         /* the FW might have updated the regdomain */
1654         iwl_mvm_update_changed_regdom(mvm);
1655
1656         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1657         mutex_unlock(&mvm->mutex);
1658 }
1659
1660 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1661 {
1662         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1663                     CMD_WAKE_UP_TRANS;
1664         int ret;
1665
1666         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1667
1668         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1669                 return -EINVAL;
1670
1671         mutex_lock(&mvm->d0i3_suspend_mutex);
1672         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1673                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1674                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1675                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1676                 return 0;
1677         }
1678         mutex_unlock(&mvm->d0i3_suspend_mutex);
1679
1680         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1681         if (ret)
1682                 goto out;
1683
1684         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1685                                                    IEEE80211_IFACE_ITER_NORMAL,
1686                                                    iwl_mvm_exit_d0i3_iterator,
1687                                                    mvm);
1688 out:
1689         schedule_work(&mvm->d0i3_exit_work);
1690         return ret;
1691 }
1692
1693 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1694 {
1695         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1696
1697         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1698         return _iwl_mvm_exit_d0i3(mvm);
1699 }
1700
1701 #define IWL_MVM_COMMON_OPS                                      \
1702         /* these could be differentiated */                     \
1703         .async_cb = iwl_mvm_async_cb,                           \
1704         .queue_full = iwl_mvm_stop_sw_queue,                    \
1705         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1706         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1707         .free_skb = iwl_mvm_free_skb,                           \
1708         .nic_error = iwl_mvm_nic_error,                         \
1709         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1710         .nic_config = iwl_mvm_nic_config,                       \
1711         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1712         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1713         /* as we only register one, these MUST be common! */    \
1714         .start = iwl_op_mode_mvm_start,                         \
1715         .stop = iwl_op_mode_mvm_stop
1716
1717 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1718         IWL_MVM_COMMON_OPS,
1719         .rx = iwl_mvm_rx,
1720 };
1721
1722 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1723                               struct napi_struct *napi,
1724                               struct iwl_rx_cmd_buffer *rxb,
1725                               unsigned int queue)
1726 {
1727         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1728         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1729         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1730
1731         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1732                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1733         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1734                                          RX_QUEUES_NOTIFICATION)))
1735                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1736         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1737                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1738 }
1739
1740 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1741         IWL_MVM_COMMON_OPS,
1742         .rx = iwl_mvm_rx_mq,
1743         .rx_rss = iwl_mvm_rx_mq_rss,
1744 };