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         if (!iwl_mvm_is_dqa_supported(mvm)) {
 581                 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
 582
 583                 if (mvm->cfg->base_params->num_of_queues == 16) {
 584                         mvm->aux_queue = 11;
 585                         mvm->first_agg_queue = 12;
 586                 } else {
 587                         mvm->aux_queue = 15;
 588                         mvm->first_agg_queue = 16;
 589                 }
 590         } else {
 591                 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 592                 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
 593                 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
 594         }
 595         mvm->sf_state = SF_UNINIT;
 596         mvm->cur_ucode = IWL_UCODE_INIT;
 597         mvm->drop_bcn_ap_mode = true;
 598
 599         mutex_init(&mvm->mutex);
 600         mutex_init(&mvm->d0i3_suspend_mutex);
 601         spin_lock_init(&mvm->async_handlers_lock);
 602         INIT_LIST_HEAD(&mvm->time_event_list);
 603         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 604         INIT_LIST_HEAD(&mvm->async_handlers_list);
 605         spin_lock_init(&mvm->time_event_lock);
 606         spin_lock_init(&mvm->queue_info_lock);
 607
 608         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 609         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 610         INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
 611         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 612         INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
 613         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 614         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 615         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 616
 617         spin_lock_init(&mvm->d0i3_tx_lock);
 618         spin_lock_init(&mvm->refs_lock);
 619         skb_queue_head_init(&mvm->d0i3_tx);
 620         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 621
 622         atomic_set(&mvm->queue_sync_counter, 0);
 623
 624         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 625
 626         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 627
 628         /*
 629          * Populate the state variables that the transport layer needs
 630          * to know about.
 631          */
 632         trans_cfg.op_mode = op_mode;
 633         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 634         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 635         switch (iwlwifi_mod_params.amsdu_size) {
 636         case IWL_AMSDU_DEF:
 637         case IWL_AMSDU_4K:
 638                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 639                 break;
 640         case IWL_AMSDU_8K:
 641                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 642                 break;
 643         case IWL_AMSDU_12K:
 644                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 645                 break;
 646         default:
 647                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 648                        iwlwifi_mod_params.amsdu_size);
 649                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 650         }
 651
 652         /* the hardware splits the A-MSDU */
 653         if (mvm->cfg->mq_rx_supported)
 654                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 655         trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
 656                                                IWL_UCODE_TLV_API_WIDE_CMD_HDR);
 657
 658         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
 659                 trans_cfg.bc_table_dword = true;
 660
 661         trans_cfg.command_groups = iwl_mvm_groups;
 662         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 663
 664         if (iwl_mvm_is_dqa_supported(mvm))
 665                 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 666         else
 667                 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 668         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 669         trans_cfg.scd_set_active = true;
 670
 671         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 672         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 673
 674         /* Set a short watchdog for the command queue */
 675         trans_cfg.cmd_q_wdg_timeout =
 676                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 677
 678         snprintf(mvm->hw->wiphy->fw_version,
 679                  sizeof(mvm->hw->wiphy->fw_version),
 680                  "%s", fw->fw_version);
 681
 682         /* Configure transport layer */
 683         iwl_trans_configure(mvm->trans, &trans_cfg);
 684
 685         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 686         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 687         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 688         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 689                sizeof(trans->dbg_conf_tlv));
 690         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 691
 692         /* set up notification wait support */
 693         iwl_notification_wait_init(&mvm->notif_wait);
 694
 695         /* Init phy db */
 696         mvm->phy_db = iwl_phy_db_init(trans);
 697         if (!mvm->phy_db) {
 698                 IWL_ERR(mvm, "Cannot init phy_db\n");
 699                 goto out_free;
 700         }
 701
 702         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 703                  mvm->cfg->name, mvm->trans->hw_rev);
 704
 705         if (iwlwifi_mod_params.nvm_file)
 706                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 707         else
 708                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 709                                  "working without external nvm file\n");
 710
 711         if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
 712                  "not allowing power-up and not having nvm_file\n"))
 713                 goto out_free;
 714
 715         /*
 716          * Even if nvm exists in the nvm_file driver should read again the nvm
 717          * from the nic because there might be entries that exist in the OTP
 718          * and not in the file.
 719          * for nics with no_power_up_nic_in_init: rely completley on nvm_file
 720          */
 721         if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
 722                 err = iwl_nvm_init(mvm, false);
 723                 if (err)
 724                         goto out_free;
 725         } else {
 726                 err = iwl_trans_start_hw(mvm->trans);
 727                 if (err)
 728                         goto out_free;
 729
 730                 mutex_lock(&mvm->mutex);
 731                 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 732                 err = iwl_run_init_mvm_ucode(mvm, true);
 733                 if (!err || !iwlmvm_mod_params.init_dbg)
 734                         iwl_mvm_stop_device(mvm);
 735                 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 736                 mutex_unlock(&mvm->mutex);
 737                 /* returns 0 if successful, 1 if success but in rfkill */
 738                 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
 739                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 740                         goto out_free;
 741                 }
 742         }
 743
 744         scan_size = iwl_mvm_scan_size(mvm);
 745
 746         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 747         if (!mvm->scan_cmd)
 748                 goto out_free;
 749
 750         /* Set EBS as successful as long as not stated otherwise by the FW. */
 751         mvm->last_ebs_successful = true;
 752
 753         err = iwl_mvm_mac_setup_register(mvm);
 754         if (err)
 755                 goto out_free;
 756
 757         min_backoff = calc_min_backoff(trans, cfg);
 758         iwl_mvm_thermal_initialize(mvm, min_backoff);
 759
 760         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 761         if (err)
 762                 goto out_unregister;
 763
 764         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 765
 766         /* The transport always starts with a taken reference, we can
 767          * release it now if d0i3 is supported */
 768         if (iwl_mvm_is_d0i3_supported(mvm))
 769                 iwl_trans_unref(mvm->trans);
 770
 771         iwl_mvm_tof_init(mvm);
 772
 773         return op_mode;
 774
 775  out_unregister:
 776         ieee80211_unregister_hw(mvm->hw);
 777         iwl_mvm_leds_exit(mvm);
 778         iwl_mvm_thermal_exit(mvm);
 779  out_free:
 780         flush_delayed_work(&mvm->fw_dump_wk);
 781         iwl_phy_db_free(mvm->phy_db);
 782         kfree(mvm->scan_cmd);
 783         if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
 784                 iwl_trans_op_mode_leave(trans);
 785         ieee80211_free_hw(mvm->hw);
 786         return NULL;
 787 }
 788
 789 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 790 {
 791         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 792         int i;
 793
 794         /* If d0i3 is supported, we have released the reference that
 795          * the transport started with, so we should take it back now
 796          * that we are leaving.
 797          */
 798         if (iwl_mvm_is_d0i3_supported(mvm))
 799                 iwl_trans_ref(mvm->trans);
 800
 801         iwl_mvm_leds_exit(mvm);
 802
 803         iwl_mvm_thermal_exit(mvm);
 804
 805         ieee80211_unregister_hw(mvm->hw);
 806
 807         kfree(mvm->scan_cmd);
 808         kfree(mvm->mcast_filter_cmd);
 809         mvm->mcast_filter_cmd = NULL;
 810
 811 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 812         kfree(mvm->d3_resume_sram);
 813 #endif
 814
 815         iwl_trans_op_mode_leave(mvm->trans);
 816
 817         iwl_phy_db_free(mvm->phy_db);
 818         mvm->phy_db = NULL;
 819
 820         iwl_free_nvm_data(mvm->nvm_data);
 821         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 822                 kfree(mvm->nvm_sections[i].data);
 823
 824         iwl_mvm_tof_clean(mvm);
 825
 826         mutex_destroy(&mvm->mutex);
 827         mutex_destroy(&mvm->d0i3_suspend_mutex);
 828
 829         ieee80211_free_hw(mvm->hw);
 830 }
 831
 832 struct iwl_async_handler_entry {
 833         struct list_head list;
 834         struct iwl_rx_cmd_buffer rxb;
 835         enum iwl_rx_handler_context context;
 836         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 837 };
 838
 839 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 840 {
 841         struct iwl_async_handler_entry *entry, *tmp;
 842
 843         spin_lock_bh(&mvm->async_handlers_lock);
 844         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 845                 iwl_free_rxb(&entry->rxb);
 846                 list_del(&entry->list);
 847                 kfree(entry);
 848         }
 849         spin_unlock_bh(&mvm->async_handlers_lock);
 850 }
 851
 852 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 853 {
 854         struct iwl_mvm *mvm =
 855                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 856         struct iwl_async_handler_entry *entry, *tmp;
 857         struct list_head local_list;
 858
 859         INIT_LIST_HEAD(&local_list);
 860
 861         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 862
 863         /*
 864          * Sync with Rx path with a lock. Remove all the entries from this list,
 865          * add them to a local one (lock free), and then handle them.
 866          */
 867         spin_lock_bh(&mvm->async_handlers_lock);
 868         list_splice_init(&mvm->async_handlers_list, &local_list);
 869         spin_unlock_bh(&mvm->async_handlers_lock);
 870
 871         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 872                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 873                         mutex_lock(&mvm->mutex);
 874                 entry->fn(mvm, &entry->rxb);
 875                 iwl_free_rxb(&entry->rxb);
 876                 list_del(&entry->list);
 877                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 878                         mutex_unlock(&mvm->mutex);
 879                 kfree(entry);
 880         }
 881 }
 882
 883 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 884                                             struct iwl_rx_packet *pkt)
 885 {
 886         struct iwl_fw_dbg_trigger_tlv *trig;
 887         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 888         int i;
 889
 890         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 891                 return;
 892
 893         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 894         cmds_trig = (void *)trig->data;
 895
 896         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 897                 return;
 898
 899         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 900                 /* don't collect on CMD 0 */
 901                 if (!cmds_trig->cmds[i].cmd_id)
 902                         break;
 903
 904                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 905                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 906                         continue;
 907
 908                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 909                                             "CMD 0x%02x.%02x received",
 910                                             pkt->hdr.group_id, pkt->hdr.cmd);
 911                 break;
 912         }
 913 }
 914
 915 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 916                               struct iwl_rx_cmd_buffer *rxb,
 917                               struct iwl_rx_packet *pkt)
 918 {
 919         int i;
 920
 921         iwl_mvm_rx_check_trigger(mvm, pkt);
 922
 923         /*
 924          * Do the notification wait before RX handlers so
 925          * even if the RX handler consumes the RXB we have
 926          * access to it in the notification wait entry.
 927          */
 928         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 929
 930         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 931                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 932                 struct iwl_async_handler_entry *entry;
 933
 934                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 935                         continue;
 936
 937                 if (rx_h->context == RX_HANDLER_SYNC) {
 938                         rx_h->fn(mvm, rxb);
 939                         return;
 940                 }
 941
 942                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 943                 /* we can't do much... */
 944                 if (!entry)
 945                         return;
 946
 947                 entry->rxb._page = rxb_steal_page(rxb);
 948                 entry->rxb._offset = rxb->_offset;
 949                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 950                 entry->fn = rx_h->fn;
 951                 entry->context = rx_h->context;
 952                 spin_lock(&mvm->async_handlers_lock);
 953                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 954                 spin_unlock(&mvm->async_handlers_lock);
 955                 schedule_work(&mvm->async_handlers_wk);
 956                 break;
 957         }
 958 }
 959
 960 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 961                        struct napi_struct *napi,
 962                        struct iwl_rx_cmd_buffer *rxb)
 963 {
 964         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 965         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 966
 967         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 968                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 969         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 970                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 971         else
 972                 iwl_mvm_rx_common(mvm, rxb, pkt);
 973 }
 974
 975 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
 976                           struct napi_struct *napi,
 977                           struct iwl_rx_cmd_buffer *rxb)
 978 {
 979         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 980         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 981
 982         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 983                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
 984         else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
 985                           pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
 986                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
 987         else if (pkt->hdr.cmd == FRAME_RELEASE)
 988                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
 989         else
 990                 iwl_mvm_rx_common(mvm, rxb, pkt);
 991 }
 992
 993 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
 994 {
 995         int q;
 996
 997         if (WARN_ON_ONCE(!mq))
 998                 return;
 999
1000         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1001                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1002                         IWL_DEBUG_TX_QUEUES(mvm,
1003                                             "mac80211 %d already stopped\n", q);
1004                         continue;
1005                 }
1006
1007                 ieee80211_stop_queue(mvm->hw, q);
1008         }
1009 }
1010
1011 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1012                              const struct iwl_device_cmd *cmd)
1013 {
1014         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1015
1016         /*
1017          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1018          * commands that need to block the Tx queues.
1019          */
1020         iwl_trans_block_txq_ptrs(mvm->trans, false);
1021 }
1022
1023 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1024 {
1025         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1026         unsigned long mq;
1027
1028         spin_lock_bh(&mvm->queue_info_lock);
1029         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1030         spin_unlock_bh(&mvm->queue_info_lock);
1031
1032         iwl_mvm_stop_mac_queues(mvm, mq);
1033 }
1034
1035 void iwl_mvm_start_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_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1044                         IWL_DEBUG_TX_QUEUES(mvm,
1045                                             "mac80211 %d still stopped\n", q);
1046                         continue;
1047                 }
1048
1049                 ieee80211_wake_queue(mvm->hw, q);
1050         }
1051 }
1052
1053 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1054 {
1055         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1056         unsigned long mq;
1057
1058         spin_lock_bh(&mvm->queue_info_lock);
1059         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1060         spin_unlock_bh(&mvm->queue_info_lock);
1061
1062         iwl_mvm_start_mac_queues(mvm, mq);
1063 }
1064
1065 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1066 {
1067         if (state)
1068                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1069         else
1070                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1071
1072         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1073 }
1074
1075 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1076 {
1077         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1078         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1079
1080         if (state)
1081                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1082         else
1083                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1084
1085         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1086
1087         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1088         if (calibrating)
1089                 iwl_abort_notification_waits(&mvm->notif_wait);
1090
1091         /*
1092          * Stop the device if we run OPERATIONAL firmware or if we are in the
1093          * middle of the calibrations.
1094          */
1095         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1096 }
1097
1098 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1099 {
1100         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1101         struct ieee80211_tx_info *info;
1102
1103         info = IEEE80211_SKB_CB(skb);
1104         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1105         ieee80211_free_txskb(mvm->hw, skb);
1106 }
1107
1108 struct iwl_mvm_reprobe {
1109         struct device *dev;
1110         struct work_struct work;
1111 };
1112
1113 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1114 {
1115         struct iwl_mvm_reprobe *reprobe;
1116
1117         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1118         if (device_reprobe(reprobe->dev))
1119                 dev_err(reprobe->dev, "reprobe failed!\n");
1120         kfree(reprobe);
1121         module_put(THIS_MODULE);
1122 }
1123
1124 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1125 {
1126         struct iwl_mvm *mvm =
1127                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1128
1129         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1130                 return;
1131
1132         mutex_lock(&mvm->mutex);
1133
1134         /* stop recording */
1135         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1136                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1137         } else {
1138                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1139                 /* wait before we collect the data till the DBGC stop */
1140                 udelay(100);
1141         }
1142
1143         iwl_mvm_fw_error_dump(mvm);
1144
1145         /* start recording again if the firmware is not crashed */
1146         WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1147                      mvm->fw->dbg_dest_tlv &&
1148                      iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1149
1150         mutex_unlock(&mvm->mutex);
1151
1152         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1153 }
1154
1155 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1156 {
1157         iwl_abort_notification_waits(&mvm->notif_wait);
1158
1159         /*
1160          * This is a bit racy, but worst case we tell mac80211 about
1161          * a stopped/aborted scan when that was already done which
1162          * is not a problem. It is necessary to abort any os scan
1163          * here because mac80211 requires having the scan cleared
1164          * before restarting.
1165          * We'll reset the scan_status to NONE in restart cleanup in
1166          * the next start() call from mac80211. If restart isn't called
1167          * (no fw restart) scan status will stay busy.
1168          */
1169         iwl_mvm_report_scan_aborted(mvm);
1170
1171         /*
1172          * If we're restarting already, don't cycle restarts.
1173          * If INIT fw asserted, it will likely fail again.
1174          * If WoWLAN fw asserted, don't restart either, mac80211
1175          * can't recover this since we're already half suspended.
1176          */
1177         if (!mvm->restart_fw && fw_error) {
1178                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1179                                             NULL);
1180         } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1181                                     &mvm->status)) {
1182                 struct iwl_mvm_reprobe *reprobe;
1183
1184                 IWL_ERR(mvm,
1185                         "Firmware error during reconfiguration - reprobe!\n");
1186
1187                 /*
1188                  * get a module reference to avoid doing this while unloading
1189                  * anyway and to avoid scheduling a work with code that's
1190                  * being removed.
1191                  */
1192                 if (!try_module_get(THIS_MODULE)) {
1193                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1194                         return;
1195                 }
1196
1197                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1198                 if (!reprobe) {
1199                         module_put(THIS_MODULE);
1200                         return;
1201                 }
1202                 reprobe->dev = mvm->trans->dev;
1203                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1204                 schedule_work(&reprobe->work);
1205         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1206                 /* don't let the transport/FW power down */
1207                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1208
1209                 if (fw_error && mvm->restart_fw > 0)
1210                         mvm->restart_fw--;
1211                 ieee80211_restart_hw(mvm->hw);
1212         }
1213 }
1214
1215 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1216 {
1217         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1218
1219         iwl_mvm_dump_nic_error_log(mvm);
1220
1221         iwl_mvm_nic_restart(mvm, true);
1222 }
1223
1224 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1225 {
1226         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1227
1228         WARN_ON(1);
1229         iwl_mvm_nic_restart(mvm, true);
1230 }
1231
1232 struct iwl_d0i3_iter_data {
1233         struct iwl_mvm *mvm;
1234         struct ieee80211_vif *connected_vif;
1235         u8 ap_sta_id;
1236         u8 vif_count;
1237         u8 offloading_tid;
1238         bool disable_offloading;
1239 };
1240
1241 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1242                                         struct ieee80211_vif *vif,
1243                                         struct iwl_d0i3_iter_data *iter_data)
1244 {
1245         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1246         struct iwl_mvm_sta *mvmsta;
1247         u32 available_tids = 0;
1248         u8 tid;
1249
1250         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1251                     mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1252                 return false;
1253
1254         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1255         if (!mvmsta)
1256                 return false;
1257
1258         spin_lock_bh(&mvmsta->lock);
1259         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1260                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1261
1262                 /*
1263                  * in case of pending tx packets, don't use this tid
1264                  * for offloading in order to prevent reuse of the same
1265                  * qos seq counters.
1266                  */
1267                 if (iwl_mvm_tid_queued(tid_data))
1268                         continue;
1269
1270                 if (tid_data->state != IWL_AGG_OFF)
1271                         continue;
1272
1273                 available_tids |= BIT(tid);
1274         }
1275         spin_unlock_bh(&mvmsta->lock);
1276
1277         /*
1278          * disallow protocol offloading if we have no available tid
1279          * (with no pending frames and no active aggregation,
1280          * as we don't handle "holes" properly - the scheduler needs the
1281          * frame's seq number and TFD index to match)
1282          */
1283         if (!available_tids)
1284                 return true;
1285
1286         /* for simplicity, just use the first available tid */
1287         iter_data->offloading_tid = ffs(available_tids) - 1;
1288         return false;
1289 }
1290
1291 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1292                                         struct ieee80211_vif *vif)
1293 {
1294         struct iwl_d0i3_iter_data *data = _data;
1295         struct iwl_mvm *mvm = data->mvm;
1296         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1297         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1298
1299         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1300         if (vif->type != NL80211_IFTYPE_STATION ||
1301             !vif->bss_conf.assoc)
1302                 return;
1303
1304         /*
1305          * in case of pending tx packets or active aggregations,
1306          * avoid offloading features in order to prevent reuse of
1307          * the same qos seq counters.
1308          */
1309         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1310                 data->disable_offloading = true;
1311
1312         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1313         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1314                                    false, flags);
1315
1316         /*
1317          * on init/association, mvm already configures POWER_TABLE_CMD
1318          * and REPLY_MCAST_FILTER_CMD, so currently don't
1319          * reconfigure them (we might want to use different
1320          * params later on, though).
1321          */
1322         data->ap_sta_id = mvmvif->ap_sta_id;
1323         data->vif_count++;
1324
1325         /*
1326          * no new commands can be sent at this stage, so it's safe
1327          * to save the vif pointer during d0i3 entrance.
1328          */
1329         data->connected_vif = vif;
1330 }
1331
1332 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1333                                     struct iwl_wowlan_config_cmd *cmd,
1334                                     struct iwl_d0i3_iter_data *iter_data)
1335 {
1336         struct ieee80211_sta *ap_sta;
1337         struct iwl_mvm_sta *mvm_ap_sta;
1338
1339         if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1340                 return;
1341
1342         rcu_read_lock();
1343
1344         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1345         if (IS_ERR_OR_NULL(ap_sta))
1346                 goto out;
1347
1348         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1349         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1350         cmd->offloading_tid = iter_data->offloading_tid;
1351         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1352                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1353         /*
1354          * The d0i3 uCode takes care of the nonqos counters,
1355          * so configure only the qos seq ones.
1356          */
1357         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1358 out:
1359         rcu_read_unlock();
1360 }
1361
1362 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1363 {
1364         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1365         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1366         int ret;
1367         struct iwl_d0i3_iter_data d0i3_iter_data = {
1368                 .mvm = mvm,
1369         };
1370         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1371                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1372                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1373                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1374         };
1375         struct iwl_d3_manager_config d3_cfg_cmd = {
1376                 .min_sleep_time = cpu_to_le32(1000),
1377                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1378         };
1379
1380         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1381
1382         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1383                 return -EINVAL;
1384
1385         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1386
1387         /*
1388          * iwl_mvm_ref_sync takes a reference before checking the flag.
1389          * so by checking there is no held reference we prevent a state
1390          * in which iwl_mvm_ref_sync continues successfully while we
1391          * configure the firmware to enter d0i3
1392          */
1393         if (iwl_mvm_ref_taken(mvm)) {
1394                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1395                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1396                 wake_up(&mvm->d0i3_exit_waitq);
1397                 return 1;
1398         }
1399
1400         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1401                                                    IEEE80211_IFACE_ITER_NORMAL,
1402                                                    iwl_mvm_enter_d0i3_iterator,
1403                                                    &d0i3_iter_data);
1404         if (d0i3_iter_data.vif_count == 1) {
1405                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1406                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1407         } else {
1408                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1409                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1410                 mvm->d0i3_offloading = false;
1411         }
1412
1413         /* make sure we have no running tx while configuring the seqno */
1414         synchronize_net();
1415
1416         /* Flush the hw queues, in case something got queued during entry */
1417         ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1418         if (ret)
1419                 return ret;
1420
1421         /* configure wowlan configuration only if needed */
1422         if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1423                 /* wake on beacons only if beacon storing isn't supported */
1424                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1425                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1426                         wowlan_config_cmd.wakeup_filter |=
1427                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1428
1429                 iwl_mvm_wowlan_config_key_params(mvm,
1430                                                  d0i3_iter_data.connected_vif,
1431                                                  true, flags);
1432
1433                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1434                                         &d0i3_iter_data);
1435
1436                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1437                                            sizeof(wowlan_config_cmd),
1438                                            &wowlan_config_cmd);
1439                 if (ret)
1440                         return ret;
1441         }
1442
1443         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1444                                     flags | CMD_MAKE_TRANS_IDLE,
1445                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1446 }
1447
1448 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1449                                        struct ieee80211_vif *vif)
1450 {
1451         struct iwl_mvm *mvm = _data;
1452         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1453
1454         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1455         if (vif->type != NL80211_IFTYPE_STATION ||
1456             !vif->bss_conf.assoc)
1457                 return;
1458
1459         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1460 }
1461
1462 struct iwl_mvm_d0i3_exit_work_iter_data {
1463         struct iwl_mvm *mvm;
1464         struct iwl_wowlan_status *status;
1465         u32 wakeup_reasons;
1466 };
1467
1468 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1469                                         struct ieee80211_vif *vif)
1470 {
1471         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1472         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1473         u32 reasons = data->wakeup_reasons;
1474
1475         /* consider only the relevant station interface */
1476         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1477             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1478                 return;
1479
1480         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1481                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1482         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1483                 ieee80211_beacon_loss(vif);
1484         else
1485                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1486 }
1487
1488 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1489 {
1490         struct ieee80211_sta *sta = NULL;
1491         struct iwl_mvm_sta *mvm_ap_sta;
1492         int i;
1493         bool wake_queues = false;
1494
1495         lockdep_assert_held(&mvm->mutex);
1496
1497         spin_lock_bh(&mvm->d0i3_tx_lock);
1498
1499         if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1500                 goto out;
1501
1502         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1503
1504         /* get the sta in order to update seq numbers and re-enqueue skbs */
1505         sta = rcu_dereference_protected(
1506                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1507                         lockdep_is_held(&mvm->mutex));
1508
1509         if (IS_ERR_OR_NULL(sta)) {
1510                 sta = NULL;
1511                 goto out;
1512         }
1513
1514         if (mvm->d0i3_offloading && qos_seq) {
1515                 /* update qos seq numbers if offloading was enabled */
1516                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1517                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1518                         u16 seq = le16_to_cpu(qos_seq[i]);
1519                         /* firmware stores last-used one, we store next one */
1520                         seq += 0x10;
1521                         mvm_ap_sta->tid_data[i].seq_number = seq;
1522                 }
1523         }
1524 out:
1525         /* re-enqueue (or drop) all packets */
1526         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1527                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1528
1529                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1530                         ieee80211_free_txskb(mvm->hw, skb);
1531
1532                 /* if the skb_queue is not empty, we need to wake queues */
1533                 wake_queues = true;
1534         }
1535         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1536         wake_up(&mvm->d0i3_exit_waitq);
1537         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1538         if (wake_queues)
1539                 ieee80211_wake_queues(mvm->hw);
1540
1541         spin_unlock_bh(&mvm->d0i3_tx_lock);
1542 }
1543
1544 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1545 {
1546         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1547         struct iwl_host_cmd get_status_cmd = {
1548                 .id = WOWLAN_GET_STATUSES,
1549                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1550         };
1551         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1552                 .mvm = mvm,
1553         };
1554
1555         struct iwl_wowlan_status *status;
1556         int ret;
1557         u32 wakeup_reasons = 0;
1558         __le16 *qos_seq = NULL;
1559
1560         mutex_lock(&mvm->mutex);
1561         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1562         if (ret)
1563                 goto out;
1564
1565         if (!get_status_cmd.resp_pkt)
1566                 goto out;
1567
1568         status = (void *)get_status_cmd.resp_pkt->data;
1569         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1570         qos_seq = status->qos_seq_ctr;
1571
1572         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1573
1574         iter_data.wakeup_reasons = wakeup_reasons;
1575         iter_data.status = status;
1576         ieee80211_iterate_active_interfaces(mvm->hw,
1577                                             IEEE80211_IFACE_ITER_NORMAL,
1578                                             iwl_mvm_d0i3_exit_work_iter,
1579                                             &iter_data);
1580 out:
1581         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1582
1583         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1584                        wakeup_reasons);
1585
1586         /* qos_seq might point inside resp_pkt, so free it only now */
1587         if (get_status_cmd.resp_pkt)
1588                 iwl_free_resp(&get_status_cmd);
1589
1590         /* the FW might have updated the regdomain */
1591         iwl_mvm_update_changed_regdom(mvm);
1592
1593         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1594         mutex_unlock(&mvm->mutex);
1595 }
1596
1597 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1598 {
1599         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1600                     CMD_WAKE_UP_TRANS;
1601         int ret;
1602
1603         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1604
1605         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1606                 return -EINVAL;
1607
1608         mutex_lock(&mvm->d0i3_suspend_mutex);
1609         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1610                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1611                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1612                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1613                 return 0;
1614         }
1615         mutex_unlock(&mvm->d0i3_suspend_mutex);
1616
1617         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1618         if (ret)
1619                 goto out;
1620
1621         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1622                                                    IEEE80211_IFACE_ITER_NORMAL,
1623                                                    iwl_mvm_exit_d0i3_iterator,
1624                                                    mvm);
1625 out:
1626         schedule_work(&mvm->d0i3_exit_work);
1627         return ret;
1628 }
1629
1630 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1631 {
1632         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1633
1634         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1635         return _iwl_mvm_exit_d0i3(mvm);
1636 }
1637
1638 #define IWL_MVM_COMMON_OPS                                      \
1639         /* these could be differentiated */                     \
1640         .async_cb = iwl_mvm_async_cb,                           \
1641         .queue_full = iwl_mvm_stop_sw_queue,                    \
1642         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1643         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1644         .free_skb = iwl_mvm_free_skb,                           \
1645         .nic_error = iwl_mvm_nic_error,                         \
1646         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1647         .nic_config = iwl_mvm_nic_config,                       \
1648         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1649         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1650         /* as we only register one, these MUST be common! */    \
1651         .start = iwl_op_mode_mvm_start,                         \
1652         .stop = iwl_op_mode_mvm_stop
1653
1654 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1655         IWL_MVM_COMMON_OPS,
1656         .rx = iwl_mvm_rx,
1657 };
1658
1659 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1660                               struct napi_struct *napi,
1661                               struct iwl_rx_cmd_buffer *rxb,
1662                               unsigned int queue)
1663 {
1664         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1665         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1666
1667         if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1668                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1669         else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
1670                           pkt->hdr.group_id == DATA_PATH_GROUP))
1671                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1672         else
1673                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1674 }
1675
1676 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1677         IWL_MVM_COMMON_OPS,
1678         .rx = iwl_mvm_rx_mq,
1679         .rx_rss = iwl_mvm_rx_mq_rss,
1680 };