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
  92 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  93 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  94 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  95 MODULE_LICENSE("GPL");
  96
  97 static const struct iwl_op_mode_ops iwl_mvm_ops;
  98 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  99
 100 struct iwl_mvm_mod_params iwlmvm_mod_params = {
 101         .power_scheme = IWL_POWER_SCHEME_BPS,
 102         .tfd_q_hang_detect = true
 103         /* rest of fields are 0 by default */
 104 };
 105
 106 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
 107 MODULE_PARM_DESC(init_dbg,
 108                  "set to true to debug an ASSERT in INIT fw (default: false");
 109 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
 110 MODULE_PARM_DESC(power_scheme,
 111                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 112 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 113                    bool, S_IRUGO);
 114 MODULE_PARM_DESC(tfd_q_hang_detect,
 115                  "TFD queues hang detection (default: true");
 116
 117 /*
 118  * module init and exit functions
 119  */
 120 static int __init iwl_mvm_init(void)
 121 {
 122         int ret;
 123
 124         ret = iwl_mvm_rate_control_register();
 125         if (ret) {
 126                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 127                 return ret;
 128         }
 129
 130         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 131
 132         if (ret) {
 133                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 134                 iwl_mvm_rate_control_unregister();
 135         }
 136
 137         return ret;
 138 }
 139 module_init(iwl_mvm_init);
 140
 141 static void __exit iwl_mvm_exit(void)
 142 {
 143         iwl_opmode_deregister("iwlmvm");
 144         iwl_mvm_rate_control_unregister();
 145 }
 146 module_exit(iwl_mvm_exit);
 147
 148 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 149 {
 150         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 151         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 152         u32 reg_val = 0;
 153         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 154
 155         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 156                          FW_PHY_CFG_RADIO_TYPE_POS;
 157         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 158                          FW_PHY_CFG_RADIO_STEP_POS;
 159         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 160                          FW_PHY_CFG_RADIO_DASH_POS;
 161
 162         /* SKU control */
 163         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 164                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 165         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 166                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 167
 168         /* radio configuration */
 169         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 170         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 171         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 172
 173         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 174                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 175
 176         /*
 177          * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
 178          * sampling, and shouldn't be set to any non-zero value.
 179          * The same is supposed to be true of the other HW, but unsetting
 180          * them (such as the 7260) causes automatic tests to fail on seemingly
 181          * unrelated errors. Need to further investigate this, but for now
 182          * we'll separate cases.
 183          */
 184         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 185                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 186
 187         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 188                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 190                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 191                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 192                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 193                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 194                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 195                                 reg_val);
 196
 197         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 198                        radio_cfg_step, radio_cfg_dash);
 199
 200         /*
 201          * W/A : NIC is stuck in a reset state after Early PCIe power off
 202          * (PCIe power is lost before PERST# is asserted), causing ME FW
 203          * to lose ownership and not being able to obtain it back.
 204          */
 205         if (!mvm->trans->cfg->apmg_not_supported)
 206                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 207                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 208                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 209 }
 210
 211 /**
 212  * enum iwl_rx_handler_context context for Rx handler
 213  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 214  *      which can't acquire mvm->mutex.
 215  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 216  *      (and only in this case!), it should be set as ASYNC. In that case,
 217  *      it will be called from a worker with mvm->mutex held.
 218  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 219  *      mutex itself, it will be called from a worker without mvm->mutex held.
 220  */
 221 enum iwl_rx_handler_context {
 222         RX_HANDLER_SYNC,
 223         RX_HANDLER_ASYNC_LOCKED,
 224         RX_HANDLER_ASYNC_UNLOCKED,
 225 };
 226
 227 /**
 228  * struct iwl_rx_handlers handler for FW notification
 229  * @cmd_id: command id
 230  * @context: see &iwl_rx_handler_context
 231  * @fn: the function is called when notification is received
 232  */
 233 struct iwl_rx_handlers {
 234         u16 cmd_id;
 235         enum iwl_rx_handler_context context;
 236         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 237 };
 238
 239 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 240         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 241 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 242         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 243
 244 /*
 245  * Handlers for fw notifications
 246  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 247  * This list should be in order of frequency for performance purposes.
 248  *
 249  * The handler can be one from three contexts, see &iwl_rx_handler_context
 250  */
 251 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 252         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 253         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 254
 255         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 256                    RX_HANDLER_ASYNC_LOCKED),
 257         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 258                    RX_HANDLER_ASYNC_LOCKED),
 259         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 260                    RX_HANDLER_ASYNC_LOCKED),
 261
 262         RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 263                    iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 264
 265         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 266                    RX_HANDLER_SYNC),
 267         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 268                    RX_HANDLER_ASYNC_LOCKED),
 269
 270         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 271
 272         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 273                    iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 274         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 275                    iwl_mvm_rx_lmac_scan_complete_notif,
 276                    RX_HANDLER_ASYNC_LOCKED),
 277         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 278                    RX_HANDLER_SYNC),
 279         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 280                    RX_HANDLER_ASYNC_LOCKED),
 281         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 282                    iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 283
 284         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 285                    RX_HANDLER_SYNC),
 286
 287         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 288                    RX_HANDLER_SYNC),
 289
 290         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 291         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 292                    iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 293         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 294                    RX_HANDLER_ASYNC_LOCKED),
 295         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 296                        iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 297         RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 298                        iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 299
 300         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 301                    RX_HANDLER_ASYNC_LOCKED),
 302         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 303                    RX_HANDLER_SYNC),
 304         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 305                    RX_HANDLER_ASYNC_LOCKED),
 306         RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
 307                        iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
 308         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 309                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 310         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 311                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 312         RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
 313                        iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
 314 };
 315 #undef RX_HANDLER
 316 #undef RX_HANDLER_GRP
 317
 318 /* Please keep this array *SORTED* by hex value.
 319  * Access is done through binary search
 320  */
 321 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 322         HCMD_NAME(MVM_ALIVE),
 323         HCMD_NAME(REPLY_ERROR),
 324         HCMD_NAME(ECHO_CMD),
 325         HCMD_NAME(INIT_COMPLETE_NOTIF),
 326         HCMD_NAME(PHY_CONTEXT_CMD),
 327         HCMD_NAME(DBG_CFG),
 328         HCMD_NAME(SCAN_CFG_CMD),
 329         HCMD_NAME(SCAN_REQ_UMAC),
 330         HCMD_NAME(SCAN_ABORT_UMAC),
 331         HCMD_NAME(SCAN_COMPLETE_UMAC),
 332         HCMD_NAME(TOF_CMD),
 333         HCMD_NAME(TOF_NOTIFICATION),
 334         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 335         HCMD_NAME(ADD_STA_KEY),
 336         HCMD_NAME(ADD_STA),
 337         HCMD_NAME(REMOVE_STA),
 338         HCMD_NAME(FW_GET_ITEM_CMD),
 339         HCMD_NAME(TX_CMD),
 340         HCMD_NAME(SCD_QUEUE_CFG),
 341         HCMD_NAME(TXPATH_FLUSH),
 342         HCMD_NAME(MGMT_MCAST_KEY),
 343         HCMD_NAME(WEP_KEY),
 344         HCMD_NAME(SHARED_MEM_CFG),
 345         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 346         HCMD_NAME(MAC_CONTEXT_CMD),
 347         HCMD_NAME(TIME_EVENT_CMD),
 348         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 349         HCMD_NAME(BINDING_CONTEXT_CMD),
 350         HCMD_NAME(TIME_QUOTA_CMD),
 351         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 352         HCMD_NAME(LEDS_CMD),
 353         HCMD_NAME(LQ_CMD),
 354         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 355         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 356         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 357         HCMD_NAME(HOT_SPOT_CMD),
 358         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 359         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 360         HCMD_NAME(BT_COEX_CI),
 361         HCMD_NAME(PHY_CONFIGURATION_CMD),
 362         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 363         HCMD_NAME(PHY_DB_CMD),
 364         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 365         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 366         HCMD_NAME(POWER_TABLE_CMD),
 367         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 368         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 369         HCMD_NAME(DC2DC_CONFIG_CMD),
 370         HCMD_NAME(NVM_ACCESS_CMD),
 371         HCMD_NAME(BEACON_NOTIFICATION),
 372         HCMD_NAME(BEACON_TEMPLATE_CMD),
 373         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 374         HCMD_NAME(BT_CONFIG),
 375         HCMD_NAME(STATISTICS_CMD),
 376         HCMD_NAME(STATISTICS_NOTIFICATION),
 377         HCMD_NAME(EOSP_NOTIFICATION),
 378         HCMD_NAME(REDUCE_TX_POWER_CMD),
 379         HCMD_NAME(CARD_STATE_NOTIFICATION),
 380         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 381         HCMD_NAME(TDLS_CONFIG_CMD),
 382         HCMD_NAME(MAC_PM_POWER_TABLE),
 383         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 384         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 385         HCMD_NAME(RSS_CONFIG_CMD),
 386         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 387         HCMD_NAME(REPLY_RX_PHY_CMD),
 388         HCMD_NAME(REPLY_RX_MPDU_CMD),
 389         HCMD_NAME(FRAME_RELEASE),
 390         HCMD_NAME(BA_NOTIF),
 391         HCMD_NAME(MCC_UPDATE_CMD),
 392         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 393         HCMD_NAME(MARKER_CMD),
 394         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 395         HCMD_NAME(BCAST_FILTER_CMD),
 396         HCMD_NAME(MCAST_FILTER_CMD),
 397         HCMD_NAME(REPLY_SF_CFG_CMD),
 398         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 399         HCMD_NAME(D3_CONFIG_CMD),
 400         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 401         HCMD_NAME(OFFLOADS_QUERY_CMD),
 402         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 403         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 404         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 405         HCMD_NAME(WOWLAN_PATTERNS),
 406         HCMD_NAME(WOWLAN_CONFIGURATION),
 407         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 408         HCMD_NAME(WOWLAN_TKIP_PARAM),
 409         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 410         HCMD_NAME(WOWLAN_GET_STATUSES),
 411         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 412         HCMD_NAME(D0I3_END_CMD),
 413         HCMD_NAME(LTR_CONFIG),
 414 };
 415
 416 /* Please keep this array *SORTED* by hex value.
 417  * Access is done through binary search
 418  */
 419 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 420         HCMD_NAME(SHARED_MEM_CFG_CMD),
 421         HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 422 };
 423
 424 /* Please keep this array *SORTED* by hex value.
 425  * Access is done through binary search
 426  */
 427 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 428         HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
 429         HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
 430         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 431 };
 432
 433 /* Please keep this array *SORTED* by hex value.
 434  * Access is done through binary search
 435  */
 436 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 437         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 438         HCMD_NAME(CTDP_CONFIG_CMD),
 439         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 440         HCMD_NAME(GEO_TX_POWER_LIMIT),
 441         HCMD_NAME(CT_KILL_NOTIFICATION),
 442         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 443 };
 444
 445 /* Please keep this array *SORTED* by hex value.
 446  * Access is done through binary search
 447  */
 448 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 449         HCMD_NAME(DQA_ENABLE_CMD),
 450         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 451         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 452         HCMD_NAME(STA_PM_NOTIF),
 453         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 454         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 455 };
 456
 457 /* Please keep this array *SORTED* by hex value.
 458  * Access is done through binary search
 459  */
 460 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
 461         HCMD_NAME(MFU_ASSERT_DUMP_NTF),
 462 };
 463
 464 /* Please keep this array *SORTED* by hex value.
 465  * Access is done through binary search
 466  */
 467 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 468         HCMD_NAME(STORED_BEACON_NTF),
 469 };
 470
 471 /* Please keep this array *SORTED* by hex value.
 472  * Access is done through binary search
 473  */
 474 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 475         HCMD_NAME(NVM_ACCESS_COMPLETE),
 476         HCMD_NAME(NVM_GET_INFO),
 477 };
 478
 479 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 480         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 481         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 482         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 483         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 484         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 485         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 486         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 487         [REGULATORY_AND_NVM_GROUP] =
 488                 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 489 };
 490
 491 /* this forward declaration can avoid to export the function */
 492 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 493 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 494
 495 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
 496 {
 497         const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
 498
 499         if (!pwr_tx_backoff)
 500                 return 0;
 501
 502         while (pwr_tx_backoff->pwr) {
 503                 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
 504                         return pwr_tx_backoff->backoff;
 505
 506                 pwr_tx_backoff++;
 507         }
 508
 509         return 0;
 510 }
 511
 512 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 513 {
 514         struct iwl_mvm *mvm =
 515                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 516         struct ieee80211_vif *tx_blocked_vif;
 517         struct iwl_mvm_vif *mvmvif;
 518
 519         mutex_lock(&mvm->mutex);
 520
 521         tx_blocked_vif =
 522                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 523                                           lockdep_is_held(&mvm->mutex));
 524
 525         if (!tx_blocked_vif)
 526                 goto unlock;
 527
 528         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 529         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 530         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 531 unlock:
 532         mutex_unlock(&mvm->mutex);
 533 }
 534
 535 static int iwl_mvm_fwrt_dump_start(void *ctx)
 536 {
 537         struct iwl_mvm *mvm = ctx;
 538         int ret;
 539
 540         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 541         if (ret)
 542                 return ret;
 543
 544         mutex_lock(&mvm->mutex);
 545
 546         return 0;
 547 }
 548
 549 static void iwl_mvm_fwrt_dump_end(void *ctx)
 550 {
 551         struct iwl_mvm *mvm = ctx;
 552
 553         mutex_unlock(&mvm->mutex);
 554
 555         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 556 }
 557
 558 static bool iwl_mvm_fwrt_fw_running(void *ctx)
 559 {
 560         return iwl_mvm_firmware_running(ctx);
 561 }
 562
 563 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
 564         .dump_start = iwl_mvm_fwrt_dump_start,
 565         .dump_end = iwl_mvm_fwrt_dump_end,
 566         .fw_running = iwl_mvm_fwrt_fw_running,
 567 };
 568
 569 static struct iwl_op_mode *
 570 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 571                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 572 {
 573         struct ieee80211_hw *hw;
 574         struct iwl_op_mode *op_mode;
 575         struct iwl_mvm *mvm;
 576         struct iwl_trans_config trans_cfg = {};
 577         static const u8 no_reclaim_cmds[] = {
 578                 TX_CMD,
 579         };
 580         int err, scan_size;
 581         u32 min_backoff;
 582
 583         /*
 584          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 585          * index all over the driver - check that its value corresponds to the
 586          * array size.
 587          */
 588         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 589
 590         /********************************
 591          * 1. Allocating and configuring HW data
 592          ********************************/
 593         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 594                                 sizeof(struct iwl_mvm),
 595                                 &iwl_mvm_hw_ops);
 596         if (!hw)
 597                 return NULL;
 598
 599         if (cfg->max_rx_agg_size)
 600                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 601
 602         if (cfg->max_tx_agg_size)
 603                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 604
 605         op_mode = hw->priv;
 606
 607         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 608         mvm->dev = trans->dev;
 609         mvm->trans = trans;
 610         mvm->cfg = cfg;
 611         mvm->fw = fw;
 612         mvm->hw = hw;
 613
 614         iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm);
 615
 616         mvm->init_status = 0;
 617
 618         if (iwl_mvm_has_new_rx_api(mvm)) {
 619                 op_mode->ops = &iwl_mvm_ops_mq;
 620                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 621         } else {
 622                 op_mode->ops = &iwl_mvm_ops;
 623                 trans->rx_mpdu_cmd_hdr_size =
 624                         sizeof(struct iwl_rx_mpdu_res_start);
 625
 626                 if (WARN_ON(trans->num_rx_queues > 1))
 627                         goto out_free;
 628         }
 629
 630         mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 631
 632         mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 633         mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
 634         mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 635         mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 636
 637         mvm->sf_state = SF_UNINIT;
 638         if (iwl_mvm_has_unified_ucode(mvm))
 639                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
 640         else
 641                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
 642         mvm->drop_bcn_ap_mode = true;
 643
 644         mutex_init(&mvm->mutex);
 645         mutex_init(&mvm->d0i3_suspend_mutex);
 646         spin_lock_init(&mvm->async_handlers_lock);
 647         INIT_LIST_HEAD(&mvm->time_event_list);
 648         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 649         INIT_LIST_HEAD(&mvm->async_handlers_list);
 650         spin_lock_init(&mvm->time_event_lock);
 651         spin_lock_init(&mvm->queue_info_lock);
 652
 653         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 654         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 655         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 656         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 657         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 658         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 659
 660         spin_lock_init(&mvm->d0i3_tx_lock);
 661         spin_lock_init(&mvm->refs_lock);
 662         skb_queue_head_init(&mvm->d0i3_tx);
 663         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 664         init_waitqueue_head(&mvm->rx_sync_waitq);
 665
 666         atomic_set(&mvm->queue_sync_counter, 0);
 667
 668         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 669
 670         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 671
 672         /*
 673          * Populate the state variables that the transport layer needs
 674          * to know about.
 675          */
 676         trans_cfg.op_mode = op_mode;
 677         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 678         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 679         switch (iwlwifi_mod_params.amsdu_size) {
 680         case IWL_AMSDU_DEF:
 681         case IWL_AMSDU_4K:
 682                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 683                 break;
 684         case IWL_AMSDU_8K:
 685                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 686                 break;
 687         case IWL_AMSDU_12K:
 688                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 689                 break;
 690         default:
 691                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 692                        iwlwifi_mod_params.amsdu_size);
 693                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 694         }
 695
 696         /* the hardware splits the A-MSDU */
 697         if (mvm->cfg->mq_rx_supported)
 698                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 699
 700         trans->wide_cmd_header = true;
 701         trans_cfg.bc_table_dword = true;
 702
 703         trans_cfg.command_groups = iwl_mvm_groups;
 704         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 705
 706         trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 707         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 708         trans_cfg.scd_set_active = true;
 709
 710         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 711                                           driver_data[2]);
 712
 713         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 714         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 715
 716         /* Set a short watchdog for the command queue */
 717         trans_cfg.cmd_q_wdg_timeout =
 718                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 719
 720         snprintf(mvm->hw->wiphy->fw_version,
 721                  sizeof(mvm->hw->wiphy->fw_version),
 722                  "%s", fw->fw_version);
 723
 724         /* Configure transport layer */
 725         iwl_trans_configure(mvm->trans, &trans_cfg);
 726
 727         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 728         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 729         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 730         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 731                sizeof(trans->dbg_conf_tlv));
 732         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 733
 734         /* set up notification wait support */
 735         iwl_notification_wait_init(&mvm->notif_wait);
 736
 737         /* Init phy db */
 738         mvm->phy_db = iwl_phy_db_init(trans);
 739         if (!mvm->phy_db) {
 740                 IWL_ERR(mvm, "Cannot init phy_db\n");
 741                 goto out_free;
 742         }
 743
 744         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 745                  mvm->cfg->name, mvm->trans->hw_rev);
 746
 747         if (iwlwifi_mod_params.nvm_file)
 748                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 749         else
 750                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 751                                  "working without external nvm file\n");
 752
 753         err = iwl_trans_start_hw(mvm->trans);
 754         if (err)
 755                 goto out_free;
 756
 757         mutex_lock(&mvm->mutex);
 758         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 759         err = iwl_run_init_mvm_ucode(mvm, true);
 760         if (!iwlmvm_mod_params.init_dbg)
 761                 iwl_mvm_stop_device(mvm);
 762         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 763         mutex_unlock(&mvm->mutex);
 764         if (err < 0) {
 765                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 766                 goto out_free;
 767         }
 768
 769         scan_size = iwl_mvm_scan_size(mvm);
 770
 771         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 772         if (!mvm->scan_cmd)
 773                 goto out_free;
 774
 775         /* Set EBS as successful as long as not stated otherwise by the FW. */
 776         mvm->last_ebs_successful = true;
 777
 778         err = iwl_mvm_mac_setup_register(mvm);
 779         if (err)
 780                 goto out_free;
 781         mvm->hw_registered = true;
 782
 783         min_backoff = calc_min_backoff(trans, cfg);
 784         iwl_mvm_thermal_initialize(mvm, min_backoff);
 785
 786         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 787         if (err)
 788                 goto out_unregister;
 789
 790         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 791                 memset(&mvm->rx_stats_v3, 0,
 792                        sizeof(struct mvm_statistics_rx_v3));
 793         else
 794                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 795
 796         /* The transport always starts with a taken reference, we can
 797          * release it now if d0i3 is supported */
 798         if (iwl_mvm_is_d0i3_supported(mvm))
 799                 iwl_trans_unref(mvm->trans);
 800
 801         iwl_mvm_tof_init(mvm);
 802
 803         return op_mode;
 804
 805  out_unregister:
 806         if (iwlmvm_mod_params.init_dbg)
 807                 return op_mode;
 808
 809         ieee80211_unregister_hw(mvm->hw);
 810         mvm->hw_registered = false;
 811         iwl_mvm_leds_exit(mvm);
 812         iwl_mvm_thermal_exit(mvm);
 813  out_free:
 814         iwl_fw_flush_dump(&mvm->fwrt);
 815
 816         if (iwlmvm_mod_params.init_dbg)
 817                 return op_mode;
 818         iwl_phy_db_free(mvm->phy_db);
 819         kfree(mvm->scan_cmd);
 820         iwl_trans_op_mode_leave(trans);
 821
 822         ieee80211_free_hw(mvm->hw);
 823         return NULL;
 824 }
 825
 826 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 827 {
 828         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 829         int i;
 830
 831         /* If d0i3 is supported, we have released the reference that
 832          * the transport started with, so we should take it back now
 833          * that we are leaving.
 834          */
 835         if (iwl_mvm_is_d0i3_supported(mvm))
 836                 iwl_trans_ref(mvm->trans);
 837
 838         iwl_mvm_leds_exit(mvm);
 839
 840         iwl_mvm_thermal_exit(mvm);
 841
 842         if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
 843                 ieee80211_unregister_hw(mvm->hw);
 844                 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 845         }
 846
 847         kfree(mvm->scan_cmd);
 848         kfree(mvm->mcast_filter_cmd);
 849         mvm->mcast_filter_cmd = NULL;
 850
 851 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 852         kfree(mvm->d3_resume_sram);
 853 #endif
 854
 855         iwl_trans_op_mode_leave(mvm->trans);
 856
 857         iwl_phy_db_free(mvm->phy_db);
 858         mvm->phy_db = NULL;
 859
 860         kfree(mvm->nvm_data);
 861         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 862                 kfree(mvm->nvm_sections[i].data);
 863
 864         iwl_mvm_tof_clean(mvm);
 865
 866         mutex_destroy(&mvm->mutex);
 867         mutex_destroy(&mvm->d0i3_suspend_mutex);
 868
 869         ieee80211_free_hw(mvm->hw);
 870 }
 871
 872 struct iwl_async_handler_entry {
 873         struct list_head list;
 874         struct iwl_rx_cmd_buffer rxb;
 875         enum iwl_rx_handler_context context;
 876         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 877 };
 878
 879 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 880 {
 881         struct iwl_async_handler_entry *entry, *tmp;
 882
 883         spin_lock_bh(&mvm->async_handlers_lock);
 884         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 885                 iwl_free_rxb(&entry->rxb);
 886                 list_del(&entry->list);
 887                 kfree(entry);
 888         }
 889         spin_unlock_bh(&mvm->async_handlers_lock);
 890 }
 891
 892 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 893 {
 894         struct iwl_mvm *mvm =
 895                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 896         struct iwl_async_handler_entry *entry, *tmp;
 897         LIST_HEAD(local_list);
 898
 899         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 900
 901         /*
 902          * Sync with Rx path with a lock. Remove all the entries from this list,
 903          * add them to a local one (lock free), and then handle them.
 904          */
 905         spin_lock_bh(&mvm->async_handlers_lock);
 906         list_splice_init(&mvm->async_handlers_list, &local_list);
 907         spin_unlock_bh(&mvm->async_handlers_lock);
 908
 909         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 910                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 911                         mutex_lock(&mvm->mutex);
 912                 entry->fn(mvm, &entry->rxb);
 913                 iwl_free_rxb(&entry->rxb);
 914                 list_del(&entry->list);
 915                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 916                         mutex_unlock(&mvm->mutex);
 917                 kfree(entry);
 918         }
 919 }
 920
 921 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 922                                             struct iwl_rx_packet *pkt)
 923 {
 924         struct iwl_fw_dbg_trigger_tlv *trig;
 925         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 926         int i;
 927
 928         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 929                 return;
 930
 931         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 932         cmds_trig = (void *)trig->data;
 933
 934         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
 935                 return;
 936
 937         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 938                 /* don't collect on CMD 0 */
 939                 if (!cmds_trig->cmds[i].cmd_id)
 940                         break;
 941
 942                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 943                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 944                         continue;
 945
 946                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 947                                         "CMD 0x%02x.%02x received",
 948                                         pkt->hdr.group_id, pkt->hdr.cmd);
 949                 break;
 950         }
 951 }
 952
 953 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 954                               struct iwl_rx_cmd_buffer *rxb,
 955                               struct iwl_rx_packet *pkt)
 956 {
 957         int i;
 958
 959         iwl_mvm_rx_check_trigger(mvm, pkt);
 960
 961         /*
 962          * Do the notification wait before RX handlers so
 963          * even if the RX handler consumes the RXB we have
 964          * access to it in the notification wait entry.
 965          */
 966         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 967
 968         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 969                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 970                 struct iwl_async_handler_entry *entry;
 971
 972                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 973                         continue;
 974
 975                 if (rx_h->context == RX_HANDLER_SYNC) {
 976                         rx_h->fn(mvm, rxb);
 977                         return;
 978                 }
 979
 980                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 981                 /* we can't do much... */
 982                 if (!entry)
 983                         return;
 984
 985                 entry->rxb._page = rxb_steal_page(rxb);
 986                 entry->rxb._offset = rxb->_offset;
 987                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 988                 entry->fn = rx_h->fn;
 989                 entry->context = rx_h->context;
 990                 spin_lock(&mvm->async_handlers_lock);
 991                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 992                 spin_unlock(&mvm->async_handlers_lock);
 993                 schedule_work(&mvm->async_handlers_wk);
 994                 return;
 995         }
 996
 997         iwl_fwrt_handle_notification(&mvm->fwrt, rxb);
 998 }
 999
1000 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1001                        struct napi_struct *napi,
1002                        struct iwl_rx_cmd_buffer *rxb)
1003 {
1004         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1005         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1006         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1007
1008         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1009                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1010         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1011                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1012         else
1013                 iwl_mvm_rx_common(mvm, rxb, pkt);
1014 }
1015
1016 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1017                           struct napi_struct *napi,
1018                           struct iwl_rx_cmd_buffer *rxb)
1019 {
1020         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1021         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1022         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1023
1024         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1025                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1026         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1027                                          RX_QUEUES_NOTIFICATION)))
1028                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1029         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1030                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1031         else
1032                 iwl_mvm_rx_common(mvm, rxb, pkt);
1033 }
1034
1035 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1036 {
1037         int q;
1038
1039         if (WARN_ON_ONCE(!mq))
1040                 return;
1041
1042         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1043                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1044                         IWL_DEBUG_TX_QUEUES(mvm,
1045                                             "mac80211 %d already stopped\n", q);
1046                         continue;
1047                 }
1048
1049                 ieee80211_stop_queue(mvm->hw, q);
1050         }
1051 }
1052
1053 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1054                              const struct iwl_device_cmd *cmd)
1055 {
1056         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1057
1058         /*
1059          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1060          * commands that need to block the Tx queues.
1061          */
1062         iwl_trans_block_txq_ptrs(mvm->trans, false);
1063 }
1064
1065 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1066 {
1067         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1068         unsigned long mq;
1069
1070         spin_lock_bh(&mvm->queue_info_lock);
1071         mq = mvm->hw_queue_to_mac80211[hw_queue];
1072         spin_unlock_bh(&mvm->queue_info_lock);
1073
1074         iwl_mvm_stop_mac_queues(mvm, mq);
1075 }
1076
1077 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1078 {
1079         int q;
1080
1081         if (WARN_ON_ONCE(!mq))
1082                 return;
1083
1084         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1085                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1086                         IWL_DEBUG_TX_QUEUES(mvm,
1087                                             "mac80211 %d still stopped\n", q);
1088                         continue;
1089                 }
1090
1091                 ieee80211_wake_queue(mvm->hw, q);
1092         }
1093 }
1094
1095 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1096 {
1097         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1098         unsigned long mq;
1099
1100         spin_lock_bh(&mvm->queue_info_lock);
1101         mq = mvm->hw_queue_to_mac80211[hw_queue];
1102         spin_unlock_bh(&mvm->queue_info_lock);
1103
1104         iwl_mvm_start_mac_queues(mvm, mq);
1105 }
1106
1107 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1108 {
1109         bool state = iwl_mvm_is_radio_killed(mvm);
1110
1111         if (state)
1112                 wake_up(&mvm->rx_sync_waitq);
1113
1114         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1115 }
1116
1117 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1118 {
1119         if (state)
1120                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1121         else
1122                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1123
1124         iwl_mvm_set_rfkill_state(mvm);
1125 }
1126
1127 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1128 {
1129         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1130         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1131
1132         if (state)
1133                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1134         else
1135                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1136
1137         iwl_mvm_set_rfkill_state(mvm);
1138
1139         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1140         if (calibrating)
1141                 iwl_abort_notification_waits(&mvm->notif_wait);
1142
1143         /*
1144          * Stop the device if we run OPERATIONAL firmware or if we are in the
1145          * middle of the calibrations.
1146          */
1147         return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1148 }
1149
1150 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1151 {
1152         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1153         struct ieee80211_tx_info *info;
1154
1155         info = IEEE80211_SKB_CB(skb);
1156         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1157         ieee80211_free_txskb(mvm->hw, skb);
1158 }
1159
1160 struct iwl_mvm_reprobe {
1161         struct device *dev;
1162         struct work_struct work;
1163 };
1164
1165 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1166 {
1167         struct iwl_mvm_reprobe *reprobe;
1168
1169         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1170         if (device_reprobe(reprobe->dev))
1171                 dev_err(reprobe->dev, "reprobe failed!\n");
1172         put_device(reprobe->dev);
1173         kfree(reprobe);
1174         module_put(THIS_MODULE);
1175 }
1176
1177 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1178 {
1179         iwl_abort_notification_waits(&mvm->notif_wait);
1180
1181         /*
1182          * This is a bit racy, but worst case we tell mac80211 about
1183          * a stopped/aborted scan when that was already done which
1184          * is not a problem. It is necessary to abort any os scan
1185          * here because mac80211 requires having the scan cleared
1186          * before restarting.
1187          * We'll reset the scan_status to NONE in restart cleanup in
1188          * the next start() call from mac80211. If restart isn't called
1189          * (no fw restart) scan status will stay busy.
1190          */
1191         iwl_mvm_report_scan_aborted(mvm);
1192
1193         /*
1194          * If we're restarting already, don't cycle restarts.
1195          * If INIT fw asserted, it will likely fail again.
1196          * If WoWLAN fw asserted, don't restart either, mac80211
1197          * can't recover this since we're already half suspended.
1198          */
1199         if (!mvm->fw_restart && fw_error) {
1200                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1201                                         NULL);
1202         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1203                 struct iwl_mvm_reprobe *reprobe;
1204
1205                 IWL_ERR(mvm,
1206                         "Firmware error during reconfiguration - reprobe!\n");
1207
1208                 /*
1209                  * get a module reference to avoid doing this while unloading
1210                  * anyway and to avoid scheduling a work with code that's
1211                  * being removed.
1212                  */
1213                 if (!try_module_get(THIS_MODULE)) {
1214                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1215                         return;
1216                 }
1217
1218                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1219                 if (!reprobe) {
1220                         module_put(THIS_MODULE);
1221                         return;
1222                 }
1223                 reprobe->dev = get_device(mvm->trans->dev);
1224                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1225                 schedule_work(&reprobe->work);
1226         } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1227                    mvm->hw_registered) {
1228                 /* don't let the transport/FW power down */
1229                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1230
1231                 if (fw_error && mvm->fw_restart > 0)
1232                         mvm->fw_restart--;
1233                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1234                 ieee80211_restart_hw(mvm->hw);
1235         }
1236 }
1237
1238 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1239 {
1240         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1241
1242         iwl_mvm_dump_nic_error_log(mvm);
1243
1244         iwl_mvm_nic_restart(mvm, true);
1245 }
1246
1247 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1248 {
1249         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1250
1251         WARN_ON(1);
1252         iwl_mvm_nic_restart(mvm, true);
1253 }
1254
1255 struct iwl_d0i3_iter_data {
1256         struct iwl_mvm *mvm;
1257         struct ieee80211_vif *connected_vif;
1258         u8 ap_sta_id;
1259         u8 vif_count;
1260         u8 offloading_tid;
1261         bool disable_offloading;
1262 };
1263
1264 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1265                                         struct ieee80211_vif *vif,
1266                                         struct iwl_d0i3_iter_data *iter_data)
1267 {
1268         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1269         struct iwl_mvm_sta *mvmsta;
1270         u32 available_tids = 0;
1271         u8 tid;
1272
1273         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1274                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1275                 return false;
1276
1277         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1278         if (!mvmsta)
1279                 return false;
1280
1281         spin_lock_bh(&mvmsta->lock);
1282         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1283                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1284
1285                 /*
1286                  * in case of pending tx packets, don't use this tid
1287                  * for offloading in order to prevent reuse of the same
1288                  * qos seq counters.
1289                  */
1290                 if (iwl_mvm_tid_queued(mvm, tid_data))
1291                         continue;
1292
1293                 if (tid_data->state != IWL_AGG_OFF)
1294                         continue;
1295
1296                 available_tids |= BIT(tid);
1297         }
1298         spin_unlock_bh(&mvmsta->lock);
1299
1300         /*
1301          * disallow protocol offloading if we have no available tid
1302          * (with no pending frames and no active aggregation,
1303          * as we don't handle "holes" properly - the scheduler needs the
1304          * frame's seq number and TFD index to match)
1305          */
1306         if (!available_tids)
1307                 return true;
1308
1309         /* for simplicity, just use the first available tid */
1310         iter_data->offloading_tid = ffs(available_tids) - 1;
1311         return false;
1312 }
1313
1314 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1315                                         struct ieee80211_vif *vif)
1316 {
1317         struct iwl_d0i3_iter_data *data = _data;
1318         struct iwl_mvm *mvm = data->mvm;
1319         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1320         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1321
1322         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1323         if (vif->type != NL80211_IFTYPE_STATION ||
1324             !vif->bss_conf.assoc)
1325                 return;
1326
1327         /*
1328          * in case of pending tx packets or active aggregations,
1329          * avoid offloading features in order to prevent reuse of
1330          * the same qos seq counters.
1331          */
1332         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1333                 data->disable_offloading = true;
1334
1335         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1336         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1337                                    false, flags);
1338
1339         /*
1340          * on init/association, mvm already configures POWER_TABLE_CMD
1341          * and REPLY_MCAST_FILTER_CMD, so currently don't
1342          * reconfigure them (we might want to use different
1343          * params later on, though).
1344          */
1345         data->ap_sta_id = mvmvif->ap_sta_id;
1346         data->vif_count++;
1347
1348         /*
1349          * no new commands can be sent at this stage, so it's safe
1350          * to save the vif pointer during d0i3 entrance.
1351          */
1352         data->connected_vif = vif;
1353 }
1354
1355 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1356                                     struct iwl_wowlan_config_cmd *cmd,
1357                                     struct iwl_d0i3_iter_data *iter_data)
1358 {
1359         struct ieee80211_sta *ap_sta;
1360         struct iwl_mvm_sta *mvm_ap_sta;
1361
1362         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1363                 return;
1364
1365         rcu_read_lock();
1366
1367         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1368         if (IS_ERR_OR_NULL(ap_sta))
1369                 goto out;
1370
1371         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1372         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1373         cmd->offloading_tid = iter_data->offloading_tid;
1374         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1375                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1376         /*
1377          * The d0i3 uCode takes care of the nonqos counters,
1378          * so configure only the qos seq ones.
1379          */
1380         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1381 out:
1382         rcu_read_unlock();
1383 }
1384
1385 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1386 {
1387         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1388         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1389         int ret;
1390         struct iwl_d0i3_iter_data d0i3_iter_data = {
1391                 .mvm = mvm,
1392         };
1393         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1394                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1395                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1396                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1397         };
1398         struct iwl_d3_manager_config d3_cfg_cmd = {
1399                 .min_sleep_time = cpu_to_le32(1000),
1400                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1401         };
1402
1403         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1404
1405         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1406                 return -EINVAL;
1407
1408         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1409
1410         /*
1411          * iwl_mvm_ref_sync takes a reference before checking the flag.
1412          * so by checking there is no held reference we prevent a state
1413          * in which iwl_mvm_ref_sync continues successfully while we
1414          * configure the firmware to enter d0i3
1415          */
1416         if (iwl_mvm_ref_taken(mvm)) {
1417                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1418                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1419                 wake_up(&mvm->d0i3_exit_waitq);
1420                 return 1;
1421         }
1422
1423         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1424                                                    IEEE80211_IFACE_ITER_NORMAL,
1425                                                    iwl_mvm_enter_d0i3_iterator,
1426                                                    &d0i3_iter_data);
1427         if (d0i3_iter_data.vif_count == 1) {
1428                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1429                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1430         } else {
1431                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1432                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1433                 mvm->d0i3_offloading = false;
1434         }
1435
1436         /* make sure we have no running tx while configuring the seqno */
1437         synchronize_net();
1438
1439         /* Flush the hw queues, in case something got queued during entry */
1440         /* TODO new tx api */
1441         if (iwl_mvm_has_new_tx_api(mvm)) {
1442                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1443         } else {
1444                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1445                                             flags);
1446                 if (ret)
1447                         return ret;
1448         }
1449
1450         /* configure wowlan configuration only if needed */
1451         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1452                 /* wake on beacons only if beacon storing isn't supported */
1453                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1454                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1455                         wowlan_config_cmd.wakeup_filter |=
1456                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1457
1458                 iwl_mvm_wowlan_config_key_params(mvm,
1459                                                  d0i3_iter_data.connected_vif,
1460                                                  true, flags);
1461
1462                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1463                                         &d0i3_iter_data);
1464
1465                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1466                                            sizeof(wowlan_config_cmd),
1467                                            &wowlan_config_cmd);
1468                 if (ret)
1469                         return ret;
1470         }
1471
1472         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1473                                     flags | CMD_MAKE_TRANS_IDLE,
1474                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1475 }
1476
1477 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1478                                        struct ieee80211_vif *vif)
1479 {
1480         struct iwl_mvm *mvm = _data;
1481         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1482
1483         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1484         if (vif->type != NL80211_IFTYPE_STATION ||
1485             !vif->bss_conf.assoc)
1486                 return;
1487
1488         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1489 }
1490
1491 struct iwl_mvm_d0i3_exit_work_iter_data {
1492         struct iwl_mvm *mvm;
1493         struct iwl_wowlan_status *status;
1494         u32 wakeup_reasons;
1495 };
1496
1497 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1498                                         struct ieee80211_vif *vif)
1499 {
1500         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1501         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1502         u32 reasons = data->wakeup_reasons;
1503
1504         /* consider only the relevant station interface */
1505         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1506             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1507                 return;
1508
1509         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1510                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1511         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1512                 ieee80211_beacon_loss(vif);
1513         else
1514                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1515 }
1516
1517 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1518 {
1519         struct ieee80211_sta *sta = NULL;
1520         struct iwl_mvm_sta *mvm_ap_sta;
1521         int i;
1522         bool wake_queues = false;
1523
1524         lockdep_assert_held(&mvm->mutex);
1525
1526         spin_lock_bh(&mvm->d0i3_tx_lock);
1527
1528         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1529                 goto out;
1530
1531         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1532
1533         /* get the sta in order to update seq numbers and re-enqueue skbs */
1534         sta = rcu_dereference_protected(
1535                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1536                         lockdep_is_held(&mvm->mutex));
1537
1538         if (IS_ERR_OR_NULL(sta)) {
1539                 sta = NULL;
1540                 goto out;
1541         }
1542
1543         if (mvm->d0i3_offloading && qos_seq) {
1544                 /* update qos seq numbers if offloading was enabled */
1545                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1546                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1547                         u16 seq = le16_to_cpu(qos_seq[i]);
1548                         /* firmware stores last-used one, we store next one */
1549                         seq += 0x10;
1550                         mvm_ap_sta->tid_data[i].seq_number = seq;
1551                 }
1552         }
1553 out:
1554         /* re-enqueue (or drop) all packets */
1555         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1556                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1557
1558                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1559                         ieee80211_free_txskb(mvm->hw, skb);
1560
1561                 /* if the skb_queue is not empty, we need to wake queues */
1562                 wake_queues = true;
1563         }
1564         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1565         wake_up(&mvm->d0i3_exit_waitq);
1566         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1567         if (wake_queues)
1568                 ieee80211_wake_queues(mvm->hw);
1569
1570         spin_unlock_bh(&mvm->d0i3_tx_lock);
1571 }
1572
1573 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1574 {
1575         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1576         struct iwl_host_cmd get_status_cmd = {
1577                 .id = WOWLAN_GET_STATUSES,
1578                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1579         };
1580         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1581                 .mvm = mvm,
1582         };
1583
1584         struct iwl_wowlan_status *status;
1585         int ret;
1586         u32 wakeup_reasons = 0;
1587         __le16 *qos_seq = NULL;
1588
1589         mutex_lock(&mvm->mutex);
1590         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1591         if (ret)
1592                 goto out;
1593
1594         status = (void *)get_status_cmd.resp_pkt->data;
1595         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1596         qos_seq = status->qos_seq_ctr;
1597
1598         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1599
1600         iter_data.wakeup_reasons = wakeup_reasons;
1601         iter_data.status = status;
1602         ieee80211_iterate_active_interfaces(mvm->hw,
1603                                             IEEE80211_IFACE_ITER_NORMAL,
1604                                             iwl_mvm_d0i3_exit_work_iter,
1605                                             &iter_data);
1606 out:
1607         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1608
1609         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1610                        wakeup_reasons);
1611
1612         /* qos_seq might point inside resp_pkt, so free it only now */
1613         if (get_status_cmd.resp_pkt)
1614                 iwl_free_resp(&get_status_cmd);
1615
1616         /* the FW might have updated the regdomain */
1617         iwl_mvm_update_changed_regdom(mvm);
1618
1619         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1620         mutex_unlock(&mvm->mutex);
1621 }
1622
1623 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1624 {
1625         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1626                     CMD_WAKE_UP_TRANS;
1627         int ret;
1628
1629         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1630
1631         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1632                 return -EINVAL;
1633
1634         mutex_lock(&mvm->d0i3_suspend_mutex);
1635         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1636                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1637                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1638                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1639                 return 0;
1640         }
1641         mutex_unlock(&mvm->d0i3_suspend_mutex);
1642
1643         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1644         if (ret)
1645                 goto out;
1646
1647         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1648                                                    IEEE80211_IFACE_ITER_NORMAL,
1649                                                    iwl_mvm_exit_d0i3_iterator,
1650                                                    mvm);
1651 out:
1652         schedule_work(&mvm->d0i3_exit_work);
1653         return ret;
1654 }
1655
1656 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1657 {
1658         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1659
1660         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1661         return _iwl_mvm_exit_d0i3(mvm);
1662 }
1663
1664 #define IWL_MVM_COMMON_OPS                                      \
1665         /* these could be differentiated */                     \
1666         .async_cb = iwl_mvm_async_cb,                           \
1667         .queue_full = iwl_mvm_stop_sw_queue,                    \
1668         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1669         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1670         .free_skb = iwl_mvm_free_skb,                           \
1671         .nic_error = iwl_mvm_nic_error,                         \
1672         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1673         .nic_config = iwl_mvm_nic_config,                       \
1674         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1675         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1676         /* as we only register one, these MUST be common! */    \
1677         .start = iwl_op_mode_mvm_start,                         \
1678         .stop = iwl_op_mode_mvm_stop
1679
1680 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1681         IWL_MVM_COMMON_OPS,
1682         .rx = iwl_mvm_rx,
1683 };
1684
1685 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1686                               struct napi_struct *napi,
1687                               struct iwl_rx_cmd_buffer *rxb,
1688                               unsigned int queue)
1689 {
1690         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1691         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1692         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1693
1694         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1695                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1696         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1697                                          RX_QUEUES_NOTIFICATION)))
1698                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1699         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1700                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1701 }
1702
1703 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1704         IWL_MVM_COMMON_OPS,
1705         .rx = iwl_mvm_rx_mq,
1706         .rx_rss = iwl_mvm_rx_mq_rss,
1707 };