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  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
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  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
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  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <linuxwifi@intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  36  * Copyright(c) 2016 Intel Deutschland GmbH
  37  * All rights reserved.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  *
  43  *  * Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  *  * Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in
  47  *    the documentation and/or other materials provided with the
  48  *    distribution.
  49  *  * Neither the name Intel Corporation nor the names of its
  50  *    contributors may be used to endorse or promote products derived
  51  *    from this software without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  54  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  55  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  56  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  57  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  63  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  64  *
  65  *****************************************************************************/
  66 #include <linux/module.h>
  67 #include <linux/vmalloc.h>
  68 #include <net/mac80211.h>
  69
  70 #include "iwl-notif-wait.h"
  71 #include "iwl-trans.h"
  72 #include "iwl-op-mode.h"
  73 #include "iwl-fw.h"
  74 #include "iwl-debug.h"
  75 #include "iwl-drv.h"
  76 #include "iwl-modparams.h"
  77 #include "mvm.h"
  78 #include "iwl-phy-db.h"
  79 #include "iwl-eeprom-parse.h"
  80 #include "iwl-csr.h"
  81 #include "iwl-io.h"
  82 #include "iwl-prph.h"
  83 #include "rs.h"
  84 #include "fw-api-scan.h"
  85 #include "time-event.h"
  86 #include "fw-dbg.h"
  87 #include "fw-api.h"
  88 #include "fw-api-scan.h"
  89
  90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  91 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  93 MODULE_LICENSE("GPL");
  94
  95 static const struct iwl_op_mode_ops iwl_mvm_ops;
  96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  97
  98 struct iwl_mvm_mod_params iwlmvm_mod_params = {
  99         .power_scheme = IWL_POWER_SCHEME_BPS,
 100         .tfd_q_hang_detect = true
 101         /* rest of fields are 0 by default */
 102 };
 103
 104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
 105 MODULE_PARM_DESC(init_dbg,
 106                  "set to true to debug an ASSERT in INIT fw (default: false");
 107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
 108 MODULE_PARM_DESC(power_scheme,
 109                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 111                    bool, S_IRUGO);
 112 MODULE_PARM_DESC(tfd_q_hang_detect,
 113                  "TFD queues hang detection (default: true");
 114
 115 /*
 116  * module init and exit functions
 117  */
 118 static int __init iwl_mvm_init(void)
 119 {
 120         int ret;
 121
 122         ret = iwl_mvm_rate_control_register();
 123         if (ret) {
 124                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 125                 return ret;
 126         }
 127
 128         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 129
 130         if (ret) {
 131                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 132                 iwl_mvm_rate_control_unregister();
 133         }
 134
 135         return ret;
 136 }
 137 module_init(iwl_mvm_init);
 138
 139 static void __exit iwl_mvm_exit(void)
 140 {
 141         iwl_opmode_deregister("iwlmvm");
 142         iwl_mvm_rate_control_unregister();
 143 }
 144 module_exit(iwl_mvm_exit);
 145
 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 147 {
 148         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 149         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 150         u32 reg_val = 0;
 151         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 152
 153         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 154                          FW_PHY_CFG_RADIO_TYPE_POS;
 155         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 156                          FW_PHY_CFG_RADIO_STEP_POS;
 157         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 158                          FW_PHY_CFG_RADIO_DASH_POS;
 159
 160         /* SKU control */
 161         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 162                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 163         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 164                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 165
 166         /* radio configuration */
 167         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 168         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 169         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 170
 171         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 172                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 173
 174         /*
 175          * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
 176          * shouldn't be set to any non-zero value. The same is supposed to be
 177          * true of the other HW, but unsetting them (such as the 7260) causes
 178          * automatic tests to fail on seemingly unrelated errors. Need to
 179          * further investigate this, but for now we'll separate cases.
 180          */
 181         if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
 182                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 183
 184         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 185                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 186                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 187                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 190                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 191                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 192                                 reg_val);
 193
 194         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 195                        radio_cfg_step, radio_cfg_dash);
 196
 197         /*
 198          * W/A : NIC is stuck in a reset state after Early PCIe power off
 199          * (PCIe power is lost before PERST# is asserted), causing ME FW
 200          * to lose ownership and not being able to obtain it back.
 201          */
 202         if (!mvm->trans->cfg->apmg_not_supported)
 203                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 204                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 205                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 206 }
 207
 208 /**
 209  * enum iwl_rx_handler_context context for Rx handler
 210  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 211  *      which can't acquire mvm->mutex.
 212  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 213  *      (and only in this case!), it should be set as ASYNC. In that case,
 214  *      it will be called from a worker with mvm->mutex held.
 215  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 216  *      mutex itself, it will be called from a worker without mvm->mutex held.
 217  */
 218 enum iwl_rx_handler_context {
 219         RX_HANDLER_SYNC,
 220         RX_HANDLER_ASYNC_LOCKED,
 221         RX_HANDLER_ASYNC_UNLOCKED,
 222 };
 223
 224 /**
 225  * struct iwl_rx_handlers handler for FW notification
 226  * @cmd_id: command id
 227  * @context: see &iwl_rx_handler_context
 228  * @fn: the function is called when notification is received
 229  */
 230 struct iwl_rx_handlers {
 231         u16 cmd_id;
 232         enum iwl_rx_handler_context context;
 233         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 234 };
 235
 236 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 237         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 239         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 240
 241 /*
 242  * Handlers for fw notifications
 243  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 244  * This list should be in order of frequency for performance purposes.
 245  *
 246  * The handler can be one from three contexts, see &iwl_rx_handler_context
 247  */
 248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 249         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 250         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 251
 252         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 253                    RX_HANDLER_ASYNC_LOCKED),
 254         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 255                    RX_HANDLER_ASYNC_LOCKED),
 256         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 257                    RX_HANDLER_ASYNC_LOCKED),
 258         RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
 259                    iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED),
 260
 261         RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 262                    iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 263
 264         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 265                    RX_HANDLER_SYNC),
 266         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 267                    RX_HANDLER_ASYNC_LOCKED),
 268
 269         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 270
 271         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 272                    iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 273         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 274                    iwl_mvm_rx_lmac_scan_complete_notif,
 275                    RX_HANDLER_ASYNC_LOCKED),
 276         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 277                    RX_HANDLER_SYNC),
 278         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 279                    RX_HANDLER_ASYNC_LOCKED),
 280         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 281                    iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 282
 283         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 284                    RX_HANDLER_SYNC),
 285
 286         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 287                    RX_HANDLER_SYNC),
 288
 289         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 290         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 291                    iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 292         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 293                    RX_HANDLER_ASYNC_LOCKED),
 294         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 295                        iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 296         RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 297                        iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 298
 299         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 300                    RX_HANDLER_ASYNC_LOCKED),
 301         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 302                    RX_HANDLER_SYNC),
 303         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 304                    RX_HANDLER_ASYNC_LOCKED),
 305         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 306                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 307         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 308                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 309 };
 310 #undef RX_HANDLER
 311 #undef RX_HANDLER_GRP
 312
 313 /* Please keep this array *SORTED* by hex value.
 314  * Access is done through binary search
 315  */
 316 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 317         HCMD_NAME(MVM_ALIVE),
 318         HCMD_NAME(REPLY_ERROR),
 319         HCMD_NAME(ECHO_CMD),
 320         HCMD_NAME(INIT_COMPLETE_NOTIF),
 321         HCMD_NAME(PHY_CONTEXT_CMD),
 322         HCMD_NAME(DBG_CFG),
 323         HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION),
 324         HCMD_NAME(SCAN_CFG_CMD),
 325         HCMD_NAME(SCAN_REQ_UMAC),
 326         HCMD_NAME(SCAN_ABORT_UMAC),
 327         HCMD_NAME(SCAN_COMPLETE_UMAC),
 328         HCMD_NAME(TOF_CMD),
 329         HCMD_NAME(TOF_NOTIFICATION),
 330         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 331         HCMD_NAME(ADD_STA_KEY),
 332         HCMD_NAME(ADD_STA),
 333         HCMD_NAME(REMOVE_STA),
 334         HCMD_NAME(FW_GET_ITEM_CMD),
 335         HCMD_NAME(TX_CMD),
 336         HCMD_NAME(SCD_QUEUE_CFG),
 337         HCMD_NAME(TXPATH_FLUSH),
 338         HCMD_NAME(MGMT_MCAST_KEY),
 339         HCMD_NAME(WEP_KEY),
 340         HCMD_NAME(SHARED_MEM_CFG),
 341         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 342         HCMD_NAME(MAC_CONTEXT_CMD),
 343         HCMD_NAME(TIME_EVENT_CMD),
 344         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 345         HCMD_NAME(BINDING_CONTEXT_CMD),
 346         HCMD_NAME(TIME_QUOTA_CMD),
 347         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 348         HCMD_NAME(LQ_CMD),
 349         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 350         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 351         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 352         HCMD_NAME(HOT_SPOT_CMD),
 353         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 354         HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
 355         HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
 356         HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
 357         HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
 358         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 359         HCMD_NAME(BT_COEX_CI),
 360         HCMD_NAME(PHY_CONFIGURATION_CMD),
 361         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 362         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 363         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 364         HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
 365         HCMD_NAME(POWER_TABLE_CMD),
 366         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 367         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 368         HCMD_NAME(DC2DC_CONFIG_CMD),
 369         HCMD_NAME(NVM_ACCESS_CMD),
 370         HCMD_NAME(SET_CALIB_DEFAULT_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_CMD),
 380         HCMD_NAME(CARD_STATE_NOTIFICATION),
 381         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 382         HCMD_NAME(TDLS_CONFIG_CMD),
 383         HCMD_NAME(MAC_PM_POWER_TABLE),
 384         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 385         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 386         HCMD_NAME(RSS_CONFIG_CMD),
 387         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 388         HCMD_NAME(REPLY_RX_PHY_CMD),
 389         HCMD_NAME(REPLY_RX_MPDU_CMD),
 390         HCMD_NAME(BA_NOTIF),
 391         HCMD_NAME(MCC_UPDATE_CMD),
 392         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 393         HCMD_NAME(MARKER_CMD),
 394         HCMD_NAME(BT_COEX_PRIO_TABLE),
 395         HCMD_NAME(BT_COEX_PROT_ENV),
 396         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 397         HCMD_NAME(BCAST_FILTER_CMD),
 398         HCMD_NAME(MCAST_FILTER_CMD),
 399         HCMD_NAME(REPLY_SF_CFG_CMD),
 400         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 401         HCMD_NAME(D3_CONFIG_CMD),
 402         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 403         HCMD_NAME(OFFLOADS_QUERY_CMD),
 404         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 405         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 406         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
 407         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 408         HCMD_NAME(WOWLAN_PATTERNS),
 409         HCMD_NAME(WOWLAN_CONFIGURATION),
 410         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 411         HCMD_NAME(WOWLAN_TKIP_PARAM),
 412         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 413         HCMD_NAME(WOWLAN_GET_STATUSES),
 414         HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
 415         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 416         HCMD_NAME(D0I3_END_CMD),
 417         HCMD_NAME(LTR_CONFIG),
 418         HCMD_NAME(REPLY_DEBUG_CMD),
 419 };
 420
 421 /* Please keep this array *SORTED* by hex value.
 422  * Access is done through binary search
 423  */
 424 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 425         HCMD_NAME(SHARED_MEM_CFG_CMD),
 426 };
 427
 428 /* Please keep this array *SORTED* by hex value.
 429  * Access is done through binary search
 430  */
 431 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 432         HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
 433         HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
 434         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 435 };
 436
 437 /* Please keep this array *SORTED* by hex value.
 438  * Access is done through binary search
 439  */
 440 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 441         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 442         HCMD_NAME(CTDP_CONFIG_CMD),
 443         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 444         HCMD_NAME(CT_KILL_NOTIFICATION),
 445         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 446 };
 447
 448 /* Please keep this array *SORTED* by hex value.
 449  * Access is done through binary search
 450  */
 451 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 452         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 453         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 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_prot_offload_names[] = {
 462         HCMD_NAME(STORED_BEACON_NTF),
 463 };
 464
 465 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 466         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 467         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 468         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 469         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 470         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 471         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 472         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 473 };
 474
 475 /* this forward declaration can avoid to export the function */
 476 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 477 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 478
 479 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
 480 {
 481         const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
 482
 483         if (!pwr_tx_backoff)
 484                 return 0;
 485
 486         while (pwr_tx_backoff->pwr) {
 487                 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
 488                         return pwr_tx_backoff->backoff;
 489
 490                 pwr_tx_backoff++;
 491         }
 492
 493         return 0;
 494 }
 495
 496 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
 497
 498 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 499 {
 500         struct iwl_mvm *mvm =
 501                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 502         struct ieee80211_vif *tx_blocked_vif;
 503         struct iwl_mvm_vif *mvmvif;
 504
 505         mutex_lock(&mvm->mutex);
 506
 507         tx_blocked_vif =
 508                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 509                                           lockdep_is_held(&mvm->mutex));
 510
 511         if (!tx_blocked_vif)
 512                 goto unlock;
 513
 514         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 515         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 516         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 517 unlock:
 518         mutex_unlock(&mvm->mutex);
 519 }
 520
 521 static struct iwl_op_mode *
 522 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 523                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 524 {
 525         struct ieee80211_hw *hw;
 526         struct iwl_op_mode *op_mode;
 527         struct iwl_mvm *mvm;
 528         struct iwl_trans_config trans_cfg = {};
 529         static const u8 no_reclaim_cmds[] = {
 530                 TX_CMD,
 531         };
 532         int err, scan_size;
 533         u32 min_backoff;
 534
 535         /*
 536          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 537          * index all over the driver - check that its value corresponds to the
 538          * array size.
 539          */
 540         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 541
 542         /********************************
 543          * 1. Allocating and configuring HW data
 544          ********************************/
 545         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 546                                 sizeof(struct iwl_mvm),
 547                                 &iwl_mvm_hw_ops);
 548         if (!hw)
 549                 return NULL;
 550
 551         if (cfg->max_rx_agg_size)
 552                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 553
 554         if (cfg->max_tx_agg_size)
 555                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 556
 557         op_mode = hw->priv;
 558
 559         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 560         mvm->dev = trans->dev;
 561         mvm->trans = trans;
 562         mvm->cfg = cfg;
 563         mvm->fw = fw;
 564         mvm->hw = hw;
 565
 566         if (iwl_mvm_has_new_rx_api(mvm)) {
 567                 op_mode->ops = &iwl_mvm_ops_mq;
 568                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 569         } else {
 570                 op_mode->ops = &iwl_mvm_ops;
 571                 trans->rx_mpdu_cmd_hdr_size =
 572                         sizeof(struct iwl_rx_mpdu_res_start);
 573
 574                 if (WARN_ON(trans->num_rx_queues > 1))
 575                         goto out_free;
 576         }
 577
 578         mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
 579
 580         mvm->aux_queue = 15;
 581         if (!iwl_mvm_is_dqa_supported(mvm)) {
 582                 mvm->first_agg_queue = 16;
 583                 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
 584         } else {
 585                 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
 586                 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
 587         }
 588         if (mvm->cfg->base_params->num_of_queues == 16) {
 589                 mvm->aux_queue = 11;
 590                 mvm->first_agg_queue = 12;
 591         }
 592         mvm->sf_state = SF_UNINIT;
 593         mvm->cur_ucode = IWL_UCODE_INIT;
 594         mvm->drop_bcn_ap_mode = true;
 595
 596         mutex_init(&mvm->mutex);
 597         mutex_init(&mvm->d0i3_suspend_mutex);
 598         spin_lock_init(&mvm->async_handlers_lock);
 599         INIT_LIST_HEAD(&mvm->time_event_list);
 600         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 601         INIT_LIST_HEAD(&mvm->async_handlers_list);
 602         spin_lock_init(&mvm->time_event_lock);
 603         spin_lock_init(&mvm->queue_info_lock);
 604
 605         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 606         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 607         INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
 608         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 609         INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
 610         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 611         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 612
 613         spin_lock_init(&mvm->d0i3_tx_lock);
 614         spin_lock_init(&mvm->refs_lock);
 615         skb_queue_head_init(&mvm->d0i3_tx);
 616         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 617
 618         atomic_set(&mvm->queue_sync_counter, 0);
 619
 620         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 621
 622         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 623
 624         /*
 625          * Populate the state variables that the transport layer needs
 626          * to know about.
 627          */
 628         trans_cfg.op_mode = op_mode;
 629         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 630         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 631         switch (iwlwifi_mod_params.amsdu_size) {
 632         case IWL_AMSDU_DEF:
 633         case IWL_AMSDU_4K:
 634                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 635                 break;
 636         case IWL_AMSDU_8K:
 637                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 638                 break;
 639         case IWL_AMSDU_12K:
 640                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 641                 break;
 642         default:
 643                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 644                        iwlwifi_mod_params.amsdu_size);
 645                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 646         }
 647
 648         /* the hardware splits the A-MSDU */
 649         if (mvm->cfg->mq_rx_supported)
 650                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 651         trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
 652                                                IWL_UCODE_TLV_API_WIDE_CMD_HDR);
 653
 654         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
 655                 trans_cfg.bc_table_dword = true;
 656
 657         trans_cfg.command_groups = iwl_mvm_groups;
 658         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 659
 660         if (iwl_mvm_is_dqa_supported(mvm))
 661                 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 662         else
 663                 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 664         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 665         trans_cfg.scd_set_active = true;
 666
 667         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 668         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 669
 670         /* Set a short watchdog for the command queue */
 671         trans_cfg.cmd_q_wdg_timeout =
 672                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 673
 674         snprintf(mvm->hw->wiphy->fw_version,
 675                  sizeof(mvm->hw->wiphy->fw_version),
 676                  "%s", fw->fw_version);
 677
 678         /* Configure transport layer */
 679         iwl_trans_configure(mvm->trans, &trans_cfg);
 680
 681         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 682         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 683         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 684         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 685                sizeof(trans->dbg_conf_tlv));
 686         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 687
 688         /* set up notification wait support */
 689         iwl_notification_wait_init(&mvm->notif_wait);
 690
 691         /* Init phy db */
 692         mvm->phy_db = iwl_phy_db_init(trans);
 693         if (!mvm->phy_db) {
 694                 IWL_ERR(mvm, "Cannot init phy_db\n");
 695                 goto out_free;
 696         }
 697
 698         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 699                  mvm->cfg->name, mvm->trans->hw_rev);
 700
 701         if (iwlwifi_mod_params.nvm_file)
 702                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 703         else
 704                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 705                                  "working without external nvm file\n");
 706
 707         if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
 708                  "not allowing power-up and not having nvm_file\n"))
 709                 goto out_free;
 710
 711         /*
 712          * Even if nvm exists in the nvm_file driver should read again the nvm
 713          * from the nic because there might be entries that exist in the OTP
 714          * and not in the file.
 715          * for nics with no_power_up_nic_in_init: rely completley on nvm_file
 716          */
 717         if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
 718                 err = iwl_nvm_init(mvm, false);
 719                 if (err)
 720                         goto out_free;
 721         } else {
 722                 err = iwl_trans_start_hw(mvm->trans);
 723                 if (err)
 724                         goto out_free;
 725
 726                 mutex_lock(&mvm->mutex);
 727                 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 728                 err = iwl_run_init_mvm_ucode(mvm, true);
 729                 if (!err || !iwlmvm_mod_params.init_dbg)
 730                         iwl_mvm_stop_device(mvm);
 731                 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 732                 mutex_unlock(&mvm->mutex);
 733                 /* returns 0 if successful, 1 if success but in rfkill */
 734                 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
 735                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 736                         goto out_free;
 737                 }
 738         }
 739
 740         scan_size = iwl_mvm_scan_size(mvm);
 741
 742         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 743         if (!mvm->scan_cmd)
 744                 goto out_free;
 745
 746         /* Set EBS as successful as long as not stated otherwise by the FW. */
 747         mvm->last_ebs_successful = true;
 748
 749         err = iwl_mvm_mac_setup_register(mvm);
 750         if (err)
 751                 goto out_free;
 752
 753         min_backoff = calc_min_backoff(trans, cfg);
 754         iwl_mvm_thermal_initialize(mvm, min_backoff);
 755
 756         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 757         if (err)
 758                 goto out_unregister;
 759
 760         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 761
 762         /* The transport always starts with a taken reference, we can
 763          * release it now if d0i3 is supported */
 764         if (iwl_mvm_is_d0i3_supported(mvm))
 765                 iwl_trans_unref(mvm->trans);
 766
 767         iwl_mvm_tof_init(mvm);
 768
 769         setup_timer(&mvm->scan_timer, iwl_mvm_scan_timeout,
 770                     (unsigned long)mvm);
 771
 772         return op_mode;
 773
 774  out_unregister:
 775         ieee80211_unregister_hw(mvm->hw);
 776         iwl_mvm_leds_exit(mvm);
 777         iwl_mvm_thermal_exit(mvm);
 778  out_free:
 779         flush_delayed_work(&mvm->fw_dump_wk);
 780         iwl_phy_db_free(mvm->phy_db);
 781         kfree(mvm->scan_cmd);
 782         if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
 783                 iwl_trans_op_mode_leave(trans);
 784         ieee80211_free_hw(mvm->hw);
 785         return NULL;
 786 }
 787
 788 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 789 {
 790         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 791         int i;
 792
 793         /* If d0i3 is supported, we have released the reference that
 794          * the transport started with, so we should take it back now
 795          * that we are leaving.
 796          */
 797         if (iwl_mvm_is_d0i3_supported(mvm))
 798                 iwl_trans_ref(mvm->trans);
 799
 800         iwl_mvm_leds_exit(mvm);
 801
 802         iwl_mvm_thermal_exit(mvm);
 803
 804         ieee80211_unregister_hw(mvm->hw);
 805
 806         kfree(mvm->scan_cmd);
 807         kfree(mvm->mcast_filter_cmd);
 808         mvm->mcast_filter_cmd = NULL;
 809
 810 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 811         kfree(mvm->d3_resume_sram);
 812 #endif
 813
 814         iwl_trans_op_mode_leave(mvm->trans);
 815
 816         iwl_phy_db_free(mvm->phy_db);
 817         mvm->phy_db = NULL;
 818
 819         iwl_free_nvm_data(mvm->nvm_data);
 820         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 821                 kfree(mvm->nvm_sections[i].data);
 822
 823         iwl_mvm_tof_clean(mvm);
 824
 825         del_timer_sync(&mvm->scan_timer);
 826
 827         mutex_destroy(&mvm->mutex);
 828         mutex_destroy(&mvm->d0i3_suspend_mutex);
 829
 830         ieee80211_free_hw(mvm->hw);
 831 }
 832
 833 struct iwl_async_handler_entry {
 834         struct list_head list;
 835         struct iwl_rx_cmd_buffer rxb;
 836         enum iwl_rx_handler_context context;
 837         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 838 };
 839
 840 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 841 {
 842         struct iwl_async_handler_entry *entry, *tmp;
 843
 844         spin_lock_bh(&mvm->async_handlers_lock);
 845         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 846                 iwl_free_rxb(&entry->rxb);
 847                 list_del(&entry->list);
 848                 kfree(entry);
 849         }
 850         spin_unlock_bh(&mvm->async_handlers_lock);
 851 }
 852
 853 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 854 {
 855         struct iwl_mvm *mvm =
 856                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 857         struct iwl_async_handler_entry *entry, *tmp;
 858         struct list_head local_list;
 859
 860         INIT_LIST_HEAD(&local_list);
 861
 862         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 863
 864         /*
 865          * Sync with Rx path with a lock. Remove all the entries from this list,
 866          * add them to a local one (lock free), and then handle them.
 867          */
 868         spin_lock_bh(&mvm->async_handlers_lock);
 869         list_splice_init(&mvm->async_handlers_list, &local_list);
 870         spin_unlock_bh(&mvm->async_handlers_lock);
 871
 872         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 873                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 874                         mutex_lock(&mvm->mutex);
 875                 entry->fn(mvm, &entry->rxb);
 876                 iwl_free_rxb(&entry->rxb);
 877                 list_del(&entry->list);
 878                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 879                         mutex_unlock(&mvm->mutex);
 880                 kfree(entry);
 881         }
 882 }
 883
 884 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 885                                             struct iwl_rx_packet *pkt)
 886 {
 887         struct iwl_fw_dbg_trigger_tlv *trig;
 888         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 889         int i;
 890
 891         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 892                 return;
 893
 894         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 895         cmds_trig = (void *)trig->data;
 896
 897         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 898                 return;
 899
 900         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 901                 /* don't collect on CMD 0 */
 902                 if (!cmds_trig->cmds[i].cmd_id)
 903                         break;
 904
 905                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 906                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 907                         continue;
 908
 909                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 910                                             "CMD 0x%02x.%02x received",
 911                                             pkt->hdr.group_id, pkt->hdr.cmd);
 912                 break;
 913         }
 914 }
 915
 916 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 917                               struct iwl_rx_cmd_buffer *rxb,
 918                               struct iwl_rx_packet *pkt)
 919 {
 920         int i;
 921
 922         iwl_mvm_rx_check_trigger(mvm, pkt);
 923
 924         /*
 925          * Do the notification wait before RX handlers so
 926          * even if the RX handler consumes the RXB we have
 927          * access to it in the notification wait entry.
 928          */
 929         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 930
 931         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 932                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 933                 struct iwl_async_handler_entry *entry;
 934
 935                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 936                         continue;
 937
 938                 if (rx_h->context == RX_HANDLER_SYNC) {
 939                         rx_h->fn(mvm, rxb);
 940                         return;
 941                 }
 942
 943                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 944                 /* we can't do much... */
 945                 if (!entry)
 946                         return;
 947
 948                 entry->rxb._page = rxb_steal_page(rxb);
 949                 entry->rxb._offset = rxb->_offset;
 950                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 951                 entry->fn = rx_h->fn;
 952                 entry->context = rx_h->context;
 953                 spin_lock(&mvm->async_handlers_lock);
 954                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 955                 spin_unlock(&mvm->async_handlers_lock);
 956                 schedule_work(&mvm->async_handlers_wk);
 957                 break;
 958         }
 959 }
 960
 961 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 962                        struct napi_struct *napi,
 963                        struct iwl_rx_cmd_buffer *rxb)
 964 {
 965         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 966         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 967
 968         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 969                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 970         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 971                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 972         else
 973                 iwl_mvm_rx_common(mvm, rxb, pkt);
 974 }
 975
 976 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
 977                           struct napi_struct *napi,
 978                           struct iwl_rx_cmd_buffer *rxb)
 979 {
 980         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 981         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 982
 983         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 984                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
 985         else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
 986                           pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
 987                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
 988         else if (pkt->hdr.cmd == FRAME_RELEASE)
 989                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
 990         else
 991                 iwl_mvm_rx_common(mvm, rxb, pkt);
 992 }
 993
 994 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
 995 {
 996         int q;
 997
 998         if (WARN_ON_ONCE(!mq))
 999                 return;
1000
1001         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1002                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1003                         IWL_DEBUG_TX_QUEUES(mvm,
1004                                             "mac80211 %d already stopped\n", q);
1005                         continue;
1006                 }
1007
1008                 ieee80211_stop_queue(mvm->hw, q);
1009         }
1010 }
1011
1012 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1013                              const struct iwl_device_cmd *cmd)
1014 {
1015         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1016
1017         /*
1018          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1019          * commands that need to block the Tx queues.
1020          */
1021         iwl_trans_block_txq_ptrs(mvm->trans, false);
1022 }
1023
1024 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1025 {
1026         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1027         unsigned long mq;
1028
1029         spin_lock_bh(&mvm->queue_info_lock);
1030         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1031         spin_unlock_bh(&mvm->queue_info_lock);
1032
1033         iwl_mvm_stop_mac_queues(mvm, mq);
1034 }
1035
1036 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1037 {
1038         int q;
1039
1040         if (WARN_ON_ONCE(!mq))
1041                 return;
1042
1043         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1044                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1045                         IWL_DEBUG_TX_QUEUES(mvm,
1046                                             "mac80211 %d still stopped\n", q);
1047                         continue;
1048                 }
1049
1050                 ieee80211_wake_queue(mvm->hw, q);
1051         }
1052 }
1053
1054 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1055 {
1056         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1057         unsigned long mq;
1058
1059         spin_lock_bh(&mvm->queue_info_lock);
1060         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1061         spin_unlock_bh(&mvm->queue_info_lock);
1062
1063         iwl_mvm_start_mac_queues(mvm, mq);
1064 }
1065
1066 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1067 {
1068         if (state)
1069                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1070         else
1071                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1072
1073         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1074 }
1075
1076 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1077 {
1078         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1079         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1080
1081         if (state)
1082                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1083         else
1084                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1085
1086         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1087
1088         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1089         if (calibrating)
1090                 iwl_abort_notification_waits(&mvm->notif_wait);
1091
1092         /*
1093          * Stop the device if we run OPERATIONAL firmware or if we are in the
1094          * middle of the calibrations.
1095          */
1096         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1097 }
1098
1099 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1100 {
1101         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1102         struct ieee80211_tx_info *info;
1103
1104         info = IEEE80211_SKB_CB(skb);
1105         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1106         ieee80211_free_txskb(mvm->hw, skb);
1107 }
1108
1109 struct iwl_mvm_reprobe {
1110         struct device *dev;
1111         struct work_struct work;
1112 };
1113
1114 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1115 {
1116         struct iwl_mvm_reprobe *reprobe;
1117
1118         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1119         if (device_reprobe(reprobe->dev))
1120                 dev_err(reprobe->dev, "reprobe failed!\n");
1121         kfree(reprobe);
1122         module_put(THIS_MODULE);
1123 }
1124
1125 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1126 {
1127         struct iwl_mvm *mvm =
1128                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1129
1130         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1131                 return;
1132
1133         mutex_lock(&mvm->mutex);
1134
1135         /* stop recording */
1136         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1137                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1138         } else {
1139                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1140                 /* wait before we collect the data till the DBGC stop */
1141                 udelay(100);
1142         }
1143
1144         iwl_mvm_fw_error_dump(mvm);
1145
1146         /* start recording again if the firmware is not crashed */
1147         WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1148                      mvm->fw->dbg_dest_tlv &&
1149                      iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1150
1151         mutex_unlock(&mvm->mutex);
1152
1153         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1154 }
1155
1156 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1157 {
1158         iwl_abort_notification_waits(&mvm->notif_wait);
1159
1160         /*
1161          * This is a bit racy, but worst case we tell mac80211 about
1162          * a stopped/aborted scan when that was already done which
1163          * is not a problem. It is necessary to abort any os scan
1164          * here because mac80211 requires having the scan cleared
1165          * before restarting.
1166          * We'll reset the scan_status to NONE in restart cleanup in
1167          * the next start() call from mac80211. If restart isn't called
1168          * (no fw restart) scan status will stay busy.
1169          */
1170         iwl_mvm_report_scan_aborted(mvm);
1171
1172         /*
1173          * If we're restarting already, don't cycle restarts.
1174          * If INIT fw asserted, it will likely fail again.
1175          * If WoWLAN fw asserted, don't restart either, mac80211
1176          * can't recover this since we're already half suspended.
1177          */
1178         if (!mvm->restart_fw && fw_error) {
1179                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1180                                             NULL);
1181         } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1182                                     &mvm->status)) {
1183                 struct iwl_mvm_reprobe *reprobe;
1184
1185                 IWL_ERR(mvm,
1186                         "Firmware error during reconfiguration - reprobe!\n");
1187
1188                 /*
1189                  * get a module reference to avoid doing this while unloading
1190                  * anyway and to avoid scheduling a work with code that's
1191                  * being removed.
1192                  */
1193                 if (!try_module_get(THIS_MODULE)) {
1194                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1195                         return;
1196                 }
1197
1198                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1199                 if (!reprobe) {
1200                         module_put(THIS_MODULE);
1201                         return;
1202                 }
1203                 reprobe->dev = mvm->trans->dev;
1204                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1205                 schedule_work(&reprobe->work);
1206         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1207                 /* don't let the transport/FW power down */
1208                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1209
1210                 if (fw_error && mvm->restart_fw > 0)
1211                         mvm->restart_fw--;
1212                 ieee80211_restart_hw(mvm->hw);
1213         }
1214 }
1215
1216 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1217 {
1218         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1219
1220         iwl_mvm_dump_nic_error_log(mvm);
1221
1222         iwl_mvm_nic_restart(mvm, true);
1223 }
1224
1225 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1226 {
1227         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1228
1229         WARN_ON(1);
1230         iwl_mvm_nic_restart(mvm, true);
1231 }
1232
1233 struct iwl_d0i3_iter_data {
1234         struct iwl_mvm *mvm;
1235         struct ieee80211_vif *connected_vif;
1236         u8 ap_sta_id;
1237         u8 vif_count;
1238         u8 offloading_tid;
1239         bool disable_offloading;
1240 };
1241
1242 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1243                                         struct ieee80211_vif *vif,
1244                                         struct iwl_d0i3_iter_data *iter_data)
1245 {
1246         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1247         struct iwl_mvm_sta *mvmsta;
1248         u32 available_tids = 0;
1249         u8 tid;
1250
1251         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1252                     mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1253                 return false;
1254
1255         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1256         if (!mvmsta)
1257                 return false;
1258
1259         spin_lock_bh(&mvmsta->lock);
1260         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1261                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1262
1263                 /*
1264                  * in case of pending tx packets, don't use this tid
1265                  * for offloading in order to prevent reuse of the same
1266                  * qos seq counters.
1267                  */
1268                 if (iwl_mvm_tid_queued(tid_data))
1269                         continue;
1270
1271                 if (tid_data->state != IWL_AGG_OFF)
1272                         continue;
1273
1274                 available_tids |= BIT(tid);
1275         }
1276         spin_unlock_bh(&mvmsta->lock);
1277
1278         /*
1279          * disallow protocol offloading if we have no available tid
1280          * (with no pending frames and no active aggregation,
1281          * as we don't handle "holes" properly - the scheduler needs the
1282          * frame's seq number and TFD index to match)
1283          */
1284         if (!available_tids)
1285                 return true;
1286
1287         /* for simplicity, just use the first available tid */
1288         iter_data->offloading_tid = ffs(available_tids) - 1;
1289         return false;
1290 }
1291
1292 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1293                                         struct ieee80211_vif *vif)
1294 {
1295         struct iwl_d0i3_iter_data *data = _data;
1296         struct iwl_mvm *mvm = data->mvm;
1297         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1298         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1299
1300         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1301         if (vif->type != NL80211_IFTYPE_STATION ||
1302             !vif->bss_conf.assoc)
1303                 return;
1304
1305         /*
1306          * in case of pending tx packets or active aggregations,
1307          * avoid offloading features in order to prevent reuse of
1308          * the same qos seq counters.
1309          */
1310         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1311                 data->disable_offloading = true;
1312
1313         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1314         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1315                                    false, flags);
1316
1317         /*
1318          * on init/association, mvm already configures POWER_TABLE_CMD
1319          * and REPLY_MCAST_FILTER_CMD, so currently don't
1320          * reconfigure them (we might want to use different
1321          * params later on, though).
1322          */
1323         data->ap_sta_id = mvmvif->ap_sta_id;
1324         data->vif_count++;
1325
1326         /*
1327          * no new commands can be sent at this stage, so it's safe
1328          * to save the vif pointer during d0i3 entrance.
1329          */
1330         data->connected_vif = vif;
1331 }
1332
1333 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1334                                     struct iwl_wowlan_config_cmd *cmd,
1335                                     struct iwl_d0i3_iter_data *iter_data)
1336 {
1337         struct ieee80211_sta *ap_sta;
1338         struct iwl_mvm_sta *mvm_ap_sta;
1339
1340         if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1341                 return;
1342
1343         rcu_read_lock();
1344
1345         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1346         if (IS_ERR_OR_NULL(ap_sta))
1347                 goto out;
1348
1349         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1350         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1351         cmd->offloading_tid = iter_data->offloading_tid;
1352         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1353                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1354         /*
1355          * The d0i3 uCode takes care of the nonqos counters,
1356          * so configure only the qos seq ones.
1357          */
1358         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1359 out:
1360         rcu_read_unlock();
1361 }
1362
1363 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1364 {
1365         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1366         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1367         int ret;
1368         struct iwl_d0i3_iter_data d0i3_iter_data = {
1369                 .mvm = mvm,
1370         };
1371         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1372                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1373                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1374                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1375         };
1376         struct iwl_d3_manager_config d3_cfg_cmd = {
1377                 .min_sleep_time = cpu_to_le32(1000),
1378                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1379         };
1380
1381         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1382
1383         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1384                 return -EINVAL;
1385
1386         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1387
1388         /*
1389          * iwl_mvm_ref_sync takes a reference before checking the flag.
1390          * so by checking there is no held reference we prevent a state
1391          * in which iwl_mvm_ref_sync continues successfully while we
1392          * configure the firmware to enter d0i3
1393          */
1394         if (iwl_mvm_ref_taken(mvm)) {
1395                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1396                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1397                 wake_up(&mvm->d0i3_exit_waitq);
1398                 return 1;
1399         }
1400
1401         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1402                                                    IEEE80211_IFACE_ITER_NORMAL,
1403                                                    iwl_mvm_enter_d0i3_iterator,
1404                                                    &d0i3_iter_data);
1405         if (d0i3_iter_data.vif_count == 1) {
1406                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1407                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1408         } else {
1409                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1410                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1411                 mvm->d0i3_offloading = false;
1412         }
1413
1414         /* make sure we have no running tx while configuring the seqno */
1415         synchronize_net();
1416
1417         /* Flush the hw queues, in case something got queued during entry */
1418         ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1419         if (ret)
1420                 return ret;
1421
1422         /* configure wowlan configuration only if needed */
1423         if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1424                 /* wake on beacons only if beacon storing isn't supported */
1425                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1426                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1427                         wowlan_config_cmd.wakeup_filter |=
1428                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1429
1430                 iwl_mvm_wowlan_config_key_params(mvm,
1431                                                  d0i3_iter_data.connected_vif,
1432                                                  true, flags);
1433
1434                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1435                                         &d0i3_iter_data);
1436
1437                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1438                                            sizeof(wowlan_config_cmd),
1439                                            &wowlan_config_cmd);
1440                 if (ret)
1441                         return ret;
1442         }
1443
1444         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1445                                     flags | CMD_MAKE_TRANS_IDLE,
1446                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1447 }
1448
1449 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1450                                        struct ieee80211_vif *vif)
1451 {
1452         struct iwl_mvm *mvm = _data;
1453         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1454
1455         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1456         if (vif->type != NL80211_IFTYPE_STATION ||
1457             !vif->bss_conf.assoc)
1458                 return;
1459
1460         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1461 }
1462
1463 struct iwl_mvm_d0i3_exit_work_iter_data {
1464         struct iwl_mvm *mvm;
1465         struct iwl_wowlan_status *status;
1466         u32 wakeup_reasons;
1467 };
1468
1469 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1470                                         struct ieee80211_vif *vif)
1471 {
1472         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1473         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1474         u32 reasons = data->wakeup_reasons;
1475
1476         /* consider only the relevant station interface */
1477         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1478             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1479                 return;
1480
1481         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1482                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1483         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1484                 ieee80211_beacon_loss(vif);
1485         else
1486                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1487 }
1488
1489 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1490 {
1491         struct ieee80211_sta *sta = NULL;
1492         struct iwl_mvm_sta *mvm_ap_sta;
1493         int i;
1494         bool wake_queues = false;
1495
1496         lockdep_assert_held(&mvm->mutex);
1497
1498         spin_lock_bh(&mvm->d0i3_tx_lock);
1499
1500         if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1501                 goto out;
1502
1503         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1504
1505         /* get the sta in order to update seq numbers and re-enqueue skbs */
1506         sta = rcu_dereference_protected(
1507                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1508                         lockdep_is_held(&mvm->mutex));
1509
1510         if (IS_ERR_OR_NULL(sta)) {
1511                 sta = NULL;
1512                 goto out;
1513         }
1514
1515         if (mvm->d0i3_offloading && qos_seq) {
1516                 /* update qos seq numbers if offloading was enabled */
1517                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1518                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1519                         u16 seq = le16_to_cpu(qos_seq[i]);
1520                         /* firmware stores last-used one, we store next one */
1521                         seq += 0x10;
1522                         mvm_ap_sta->tid_data[i].seq_number = seq;
1523                 }
1524         }
1525 out:
1526         /* re-enqueue (or drop) all packets */
1527         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1528                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1529
1530                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1531                         ieee80211_free_txskb(mvm->hw, skb);
1532
1533                 /* if the skb_queue is not empty, we need to wake queues */
1534                 wake_queues = true;
1535         }
1536         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1537         wake_up(&mvm->d0i3_exit_waitq);
1538         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1539         if (wake_queues)
1540                 ieee80211_wake_queues(mvm->hw);
1541
1542         spin_unlock_bh(&mvm->d0i3_tx_lock);
1543 }
1544
1545 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1546 {
1547         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1548         struct iwl_host_cmd get_status_cmd = {
1549                 .id = WOWLAN_GET_STATUSES,
1550                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1551         };
1552         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1553                 .mvm = mvm,
1554         };
1555
1556         struct iwl_wowlan_status *status;
1557         int ret;
1558         u32 wakeup_reasons = 0;
1559         __le16 *qos_seq = NULL;
1560
1561         mutex_lock(&mvm->mutex);
1562         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1563         if (ret)
1564                 goto out;
1565
1566         if (!get_status_cmd.resp_pkt)
1567                 goto out;
1568
1569         status = (void *)get_status_cmd.resp_pkt->data;
1570         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1571         qos_seq = status->qos_seq_ctr;
1572
1573         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1574
1575         iter_data.wakeup_reasons = wakeup_reasons;
1576         iter_data.status = status;
1577         ieee80211_iterate_active_interfaces(mvm->hw,
1578                                             IEEE80211_IFACE_ITER_NORMAL,
1579                                             iwl_mvm_d0i3_exit_work_iter,
1580                                             &iter_data);
1581 out:
1582         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1583
1584         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1585                        wakeup_reasons);
1586
1587         /* qos_seq might point inside resp_pkt, so free it only now */
1588         if (get_status_cmd.resp_pkt)
1589                 iwl_free_resp(&get_status_cmd);
1590
1591         /* the FW might have updated the regdomain */
1592         iwl_mvm_update_changed_regdom(mvm);
1593
1594         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1595         mutex_unlock(&mvm->mutex);
1596 }
1597
1598 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1599 {
1600         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1601                     CMD_WAKE_UP_TRANS;
1602         int ret;
1603
1604         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1605
1606         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1607                 return -EINVAL;
1608
1609         mutex_lock(&mvm->d0i3_suspend_mutex);
1610         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1611                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1612                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1613                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1614                 return 0;
1615         }
1616         mutex_unlock(&mvm->d0i3_suspend_mutex);
1617
1618         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1619         if (ret)
1620                 goto out;
1621
1622         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1623                                                    IEEE80211_IFACE_ITER_NORMAL,
1624                                                    iwl_mvm_exit_d0i3_iterator,
1625                                                    mvm);
1626 out:
1627         schedule_work(&mvm->d0i3_exit_work);
1628         return ret;
1629 }
1630
1631 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1632 {
1633         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1634
1635         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1636         return _iwl_mvm_exit_d0i3(mvm);
1637 }
1638
1639 #define IWL_MVM_COMMON_OPS                                      \
1640         /* these could be differentiated */                     \
1641         .async_cb = iwl_mvm_async_cb,                           \
1642         .queue_full = iwl_mvm_stop_sw_queue,                    \
1643         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1644         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1645         .free_skb = iwl_mvm_free_skb,                           \
1646         .nic_error = iwl_mvm_nic_error,                         \
1647         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1648         .nic_config = iwl_mvm_nic_config,                       \
1649         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1650         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1651         /* as we only register one, these MUST be common! */    \
1652         .start = iwl_op_mode_mvm_start,                         \
1653         .stop = iwl_op_mode_mvm_stop
1654
1655 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1656         IWL_MVM_COMMON_OPS,
1657         .rx = iwl_mvm_rx,
1658 };
1659
1660 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1661                               struct napi_struct *napi,
1662                               struct iwl_rx_cmd_buffer *rxb,
1663                               unsigned int queue)
1664 {
1665         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1666         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1667
1668         if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1669                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1670         else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
1671                           pkt->hdr.group_id == DATA_PATH_GROUP))
1672                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1673         else
1674                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1675 }
1676
1677 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1678         IWL_MVM_COMMON_OPS,
1679         .rx = iwl_mvm_rx_mq,
1680         .rx_rss = iwl_mvm_rx_mq_rss,
1681 };