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 };
 435
 436 /* Please keep this array *SORTED* by hex value.
 437  * Access is done through binary search
 438  */
 439 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 440         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 441         HCMD_NAME(CTDP_CONFIG_CMD),
 442         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 443         HCMD_NAME(CT_KILL_NOTIFICATION),
 444         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 445 };
 446
 447 /* Please keep this array *SORTED* by hex value.
 448  * Access is done through binary search
 449  */
 450 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 451         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 452         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 453         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 454         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 455 };
 456
 457 /* Please keep this array *SORTED* by hex value.
 458  * Access is done through binary search
 459  */
 460 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 461         HCMD_NAME(STORED_BEACON_NTF),
 462 };
 463
 464 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 465         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 466         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 467         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 468         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 469         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 470         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 471         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 472 };
 473
 474 /* this forward declaration can avoid to export the function */
 475 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 476 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 477
 478 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
 479 {
 480         const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
 481
 482         if (!pwr_tx_backoff)
 483                 return 0;
 484
 485         while (pwr_tx_backoff->pwr) {
 486                 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
 487                         return pwr_tx_backoff->backoff;
 488
 489                 pwr_tx_backoff++;
 490         }
 491
 492         return 0;
 493 }
 494
 495 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
 496
 497 static struct iwl_op_mode *
 498 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 499                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 500 {
 501         struct ieee80211_hw *hw;
 502         struct iwl_op_mode *op_mode;
 503         struct iwl_mvm *mvm;
 504         struct iwl_trans_config trans_cfg = {};
 505         static const u8 no_reclaim_cmds[] = {
 506                 TX_CMD,
 507         };
 508         int err, scan_size;
 509         u32 min_backoff;
 510
 511         /*
 512          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 513          * index all over the driver - check that its value corresponds to the
 514          * array size.
 515          */
 516         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 517
 518         /********************************
 519          * 1. Allocating and configuring HW data
 520          ********************************/
 521         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 522                                 sizeof(struct iwl_mvm),
 523                                 &iwl_mvm_hw_ops);
 524         if (!hw)
 525                 return NULL;
 526
 527         if (cfg->max_rx_agg_size)
 528                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 529
 530         if (cfg->max_tx_agg_size)
 531                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 532
 533         op_mode = hw->priv;
 534
 535         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 536         mvm->dev = trans->dev;
 537         mvm->trans = trans;
 538         mvm->cfg = cfg;
 539         mvm->fw = fw;
 540         mvm->hw = hw;
 541
 542         if (iwl_mvm_has_new_rx_api(mvm)) {
 543                 op_mode->ops = &iwl_mvm_ops_mq;
 544                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 545         } else {
 546                 op_mode->ops = &iwl_mvm_ops;
 547                 trans->rx_mpdu_cmd_hdr_size =
 548                         sizeof(struct iwl_rx_mpdu_res_start);
 549
 550                 if (WARN_ON(trans->num_rx_queues > 1))
 551                         goto out_free;
 552         }
 553
 554         mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
 555
 556         mvm->aux_queue = 15;
 557         mvm->first_agg_queue = 16;
 558         mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
 559         if (mvm->cfg->base_params->num_of_queues == 16) {
 560                 mvm->aux_queue = 11;
 561                 mvm->first_agg_queue = 12;
 562         }
 563         mvm->sf_state = SF_UNINIT;
 564         mvm->cur_ucode = IWL_UCODE_INIT;
 565         mvm->drop_bcn_ap_mode = true;
 566
 567         mutex_init(&mvm->mutex);
 568         mutex_init(&mvm->d0i3_suspend_mutex);
 569         spin_lock_init(&mvm->async_handlers_lock);
 570         INIT_LIST_HEAD(&mvm->time_event_list);
 571         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 572         INIT_LIST_HEAD(&mvm->async_handlers_list);
 573         spin_lock_init(&mvm->time_event_lock);
 574         spin_lock_init(&mvm->queue_info_lock);
 575
 576         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 577         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 578         INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
 579         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 580         INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
 581         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 582         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 583
 584         spin_lock_init(&mvm->d0i3_tx_lock);
 585         spin_lock_init(&mvm->refs_lock);
 586         skb_queue_head_init(&mvm->d0i3_tx);
 587         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 588
 589         atomic_set(&mvm->queue_sync_counter, 0);
 590
 591         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 592
 593         /*
 594          * Populate the state variables that the transport layer needs
 595          * to know about.
 596          */
 597         trans_cfg.op_mode = op_mode;
 598         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 599         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 600         switch (iwlwifi_mod_params.amsdu_size) {
 601         case IWL_AMSDU_4K:
 602                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 603                 break;
 604         case IWL_AMSDU_8K:
 605                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 606                 break;
 607         case IWL_AMSDU_12K:
 608                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 609                 break;
 610         default:
 611                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 612                        iwlwifi_mod_params.amsdu_size);
 613                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 614         }
 615         trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
 616                                                IWL_UCODE_TLV_API_WIDE_CMD_HDR);
 617
 618         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
 619                 trans_cfg.bc_table_dword = true;
 620
 621         trans_cfg.command_groups = iwl_mvm_groups;
 622         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 623
 624         if (iwl_mvm_is_dqa_supported(mvm))
 625                 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 626         else
 627                 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 628         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 629         trans_cfg.scd_set_active = true;
 630
 631         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 632         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 633
 634         /* Set a short watchdog for the command queue */
 635         trans_cfg.cmd_q_wdg_timeout =
 636                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 637
 638         snprintf(mvm->hw->wiphy->fw_version,
 639                  sizeof(mvm->hw->wiphy->fw_version),
 640                  "%s", fw->fw_version);
 641
 642         /* Configure transport layer */
 643         iwl_trans_configure(mvm->trans, &trans_cfg);
 644
 645         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 646         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 647         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 648         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 649                sizeof(trans->dbg_conf_tlv));
 650         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 651
 652         /* set up notification wait support */
 653         iwl_notification_wait_init(&mvm->notif_wait);
 654
 655         /* Init phy db */
 656         mvm->phy_db = iwl_phy_db_init(trans);
 657         if (!mvm->phy_db) {
 658                 IWL_ERR(mvm, "Cannot init phy_db\n");
 659                 goto out_free;
 660         }
 661
 662         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 663                  mvm->cfg->name, mvm->trans->hw_rev);
 664
 665         if (iwlwifi_mod_params.nvm_file)
 666                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 667         else
 668                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 669                                  "working without external nvm file\n");
 670
 671         if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
 672                  "not allowing power-up and not having nvm_file\n"))
 673                 goto out_free;
 674
 675         /*
 676          * Even if nvm exists in the nvm_file driver should read again the nvm
 677          * from the nic because there might be entries that exist in the OTP
 678          * and not in the file.
 679          * for nics with no_power_up_nic_in_init: rely completley on nvm_file
 680          */
 681         if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
 682                 err = iwl_nvm_init(mvm, false);
 683                 if (err)
 684                         goto out_free;
 685         } else {
 686                 err = iwl_trans_start_hw(mvm->trans);
 687                 if (err)
 688                         goto out_free;
 689
 690                 mutex_lock(&mvm->mutex);
 691                 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 692                 err = iwl_run_init_mvm_ucode(mvm, true);
 693                 if (!err || !iwlmvm_mod_params.init_dbg)
 694                         iwl_mvm_stop_device(mvm);
 695                 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 696                 mutex_unlock(&mvm->mutex);
 697                 /* returns 0 if successful, 1 if success but in rfkill */
 698                 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
 699                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 700                         goto out_free;
 701                 }
 702         }
 703
 704         scan_size = iwl_mvm_scan_size(mvm);
 705
 706         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 707         if (!mvm->scan_cmd)
 708                 goto out_free;
 709
 710         /* Set EBS as successful as long as not stated otherwise by the FW. */
 711         mvm->last_ebs_successful = true;
 712
 713         err = iwl_mvm_mac_setup_register(mvm);
 714         if (err)
 715                 goto out_free;
 716
 717         min_backoff = calc_min_backoff(trans, cfg);
 718         iwl_mvm_thermal_initialize(mvm, min_backoff);
 719
 720         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 721         if (err)
 722                 goto out_unregister;
 723
 724         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 725
 726         /* The transport always starts with a taken reference, we can
 727          * release it now if d0i3 is supported */
 728         if (iwl_mvm_is_d0i3_supported(mvm))
 729                 iwl_trans_unref(mvm->trans);
 730
 731         iwl_mvm_tof_init(mvm);
 732
 733         setup_timer(&mvm->scan_timer, iwl_mvm_scan_timeout,
 734                     (unsigned long)mvm);
 735
 736         return op_mode;
 737
 738  out_unregister:
 739         ieee80211_unregister_hw(mvm->hw);
 740         iwl_mvm_leds_exit(mvm);
 741         iwl_mvm_thermal_exit(mvm);
 742  out_free:
 743         flush_delayed_work(&mvm->fw_dump_wk);
 744         iwl_phy_db_free(mvm->phy_db);
 745         kfree(mvm->scan_cmd);
 746         if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
 747                 iwl_trans_op_mode_leave(trans);
 748         ieee80211_free_hw(mvm->hw);
 749         return NULL;
 750 }
 751
 752 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 753 {
 754         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 755         int i;
 756
 757         /* If d0i3 is supported, we have released the reference that
 758          * the transport started with, so we should take it back now
 759          * that we are leaving.
 760          */
 761         if (iwl_mvm_is_d0i3_supported(mvm))
 762                 iwl_trans_ref(mvm->trans);
 763
 764         iwl_mvm_leds_exit(mvm);
 765
 766         iwl_mvm_thermal_exit(mvm);
 767
 768         ieee80211_unregister_hw(mvm->hw);
 769
 770         kfree(mvm->scan_cmd);
 771         kfree(mvm->mcast_filter_cmd);
 772         mvm->mcast_filter_cmd = NULL;
 773
 774 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 775         kfree(mvm->d3_resume_sram);
 776 #endif
 777
 778         iwl_trans_op_mode_leave(mvm->trans);
 779
 780         iwl_phy_db_free(mvm->phy_db);
 781         mvm->phy_db = NULL;
 782
 783         iwl_free_nvm_data(mvm->nvm_data);
 784         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 785                 kfree(mvm->nvm_sections[i].data);
 786
 787         iwl_mvm_tof_clean(mvm);
 788
 789         del_timer_sync(&mvm->scan_timer);
 790
 791         mutex_destroy(&mvm->mutex);
 792         mutex_destroy(&mvm->d0i3_suspend_mutex);
 793
 794         ieee80211_free_hw(mvm->hw);
 795 }
 796
 797 struct iwl_async_handler_entry {
 798         struct list_head list;
 799         struct iwl_rx_cmd_buffer rxb;
 800         enum iwl_rx_handler_context context;
 801         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 802 };
 803
 804 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 805 {
 806         struct iwl_async_handler_entry *entry, *tmp;
 807
 808         spin_lock_bh(&mvm->async_handlers_lock);
 809         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 810                 iwl_free_rxb(&entry->rxb);
 811                 list_del(&entry->list);
 812                 kfree(entry);
 813         }
 814         spin_unlock_bh(&mvm->async_handlers_lock);
 815 }
 816
 817 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 818 {
 819         struct iwl_mvm *mvm =
 820                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 821         struct iwl_async_handler_entry *entry, *tmp;
 822         struct list_head local_list;
 823
 824         INIT_LIST_HEAD(&local_list);
 825
 826         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 827
 828         /*
 829          * Sync with Rx path with a lock. Remove all the entries from this list,
 830          * add them to a local one (lock free), and then handle them.
 831          */
 832         spin_lock_bh(&mvm->async_handlers_lock);
 833         list_splice_init(&mvm->async_handlers_list, &local_list);
 834         spin_unlock_bh(&mvm->async_handlers_lock);
 835
 836         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 837                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 838                         mutex_lock(&mvm->mutex);
 839                 entry->fn(mvm, &entry->rxb);
 840                 iwl_free_rxb(&entry->rxb);
 841                 list_del(&entry->list);
 842                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 843                         mutex_unlock(&mvm->mutex);
 844                 kfree(entry);
 845         }
 846 }
 847
 848 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 849                                             struct iwl_rx_packet *pkt)
 850 {
 851         struct iwl_fw_dbg_trigger_tlv *trig;
 852         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 853         int i;
 854
 855         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 856                 return;
 857
 858         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 859         cmds_trig = (void *)trig->data;
 860
 861         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 862                 return;
 863
 864         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 865                 /* don't collect on CMD 0 */
 866                 if (!cmds_trig->cmds[i].cmd_id)
 867                         break;
 868
 869                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 870                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 871                         continue;
 872
 873                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 874                                             "CMD 0x%02x.%02x received",
 875                                             pkt->hdr.group_id, pkt->hdr.cmd);
 876                 break;
 877         }
 878 }
 879
 880 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 881                               struct iwl_rx_cmd_buffer *rxb,
 882                               struct iwl_rx_packet *pkt)
 883 {
 884         int i;
 885
 886         iwl_mvm_rx_check_trigger(mvm, pkt);
 887
 888         /*
 889          * Do the notification wait before RX handlers so
 890          * even if the RX handler consumes the RXB we have
 891          * access to it in the notification wait entry.
 892          */
 893         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 894
 895         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 896                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 897                 struct iwl_async_handler_entry *entry;
 898
 899                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 900                         continue;
 901
 902                 if (rx_h->context == RX_HANDLER_SYNC) {
 903                         rx_h->fn(mvm, rxb);
 904                         return;
 905                 }
 906
 907                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 908                 /* we can't do much... */
 909                 if (!entry)
 910                         return;
 911
 912                 entry->rxb._page = rxb_steal_page(rxb);
 913                 entry->rxb._offset = rxb->_offset;
 914                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 915                 entry->fn = rx_h->fn;
 916                 entry->context = rx_h->context;
 917                 spin_lock(&mvm->async_handlers_lock);
 918                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 919                 spin_unlock(&mvm->async_handlers_lock);
 920                 schedule_work(&mvm->async_handlers_wk);
 921                 break;
 922         }
 923 }
 924
 925 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 926                        struct napi_struct *napi,
 927                        struct iwl_rx_cmd_buffer *rxb)
 928 {
 929         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 930         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 931
 932         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 933                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 934         else if (pkt->hdr.cmd == FRAME_RELEASE)
 935                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
 936         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 937                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 938         else
 939                 iwl_mvm_rx_common(mvm, rxb, pkt);
 940 }
 941
 942 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
 943                           struct napi_struct *napi,
 944                           struct iwl_rx_cmd_buffer *rxb)
 945 {
 946         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 947         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 948
 949         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 950                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
 951         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 952                 iwl_mvm_rx_phy_cmd_mq(mvm, rxb);
 953         else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
 954                           pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
 955                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
 956         else
 957                 iwl_mvm_rx_common(mvm, rxb, pkt);
 958 }
 959
 960 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
 961 {
 962         int q;
 963
 964         if (WARN_ON_ONCE(!mq))
 965                 return;
 966
 967         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
 968                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
 969                         IWL_DEBUG_TX_QUEUES(mvm,
 970                                             "mac80211 %d already stopped\n", q);
 971                         continue;
 972                 }
 973
 974                 ieee80211_stop_queue(mvm->hw, q);
 975         }
 976 }
 977
 978 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
 979                              const struct iwl_device_cmd *cmd)
 980 {
 981         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 982
 983         /*
 984          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
 985          * commands that need to block the Tx queues.
 986          */
 987         iwl_trans_block_txq_ptrs(mvm->trans, false);
 988 }
 989
 990 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
 991 {
 992         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 993         unsigned long mq;
 994
 995         spin_lock_bh(&mvm->queue_info_lock);
 996         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
 997         spin_unlock_bh(&mvm->queue_info_lock);
 998
 999         iwl_mvm_stop_mac_queues(mvm, mq);
1000 }
1001
1002 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1003 {
1004         int q;
1005
1006         if (WARN_ON_ONCE(!mq))
1007                 return;
1008
1009         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1010                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1011                         IWL_DEBUG_TX_QUEUES(mvm,
1012                                             "mac80211 %d still stopped\n", q);
1013                         continue;
1014                 }
1015
1016                 ieee80211_wake_queue(mvm->hw, q);
1017         }
1018 }
1019
1020 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1021 {
1022         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1023         unsigned long mq;
1024
1025         spin_lock_bh(&mvm->queue_info_lock);
1026         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1027         spin_unlock_bh(&mvm->queue_info_lock);
1028
1029         iwl_mvm_start_mac_queues(mvm, mq);
1030 }
1031
1032 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1033 {
1034         if (state)
1035                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1036         else
1037                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1038
1039         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1040 }
1041
1042 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1043 {
1044         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1045         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1046
1047         if (state)
1048                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1049         else
1050                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1051
1052         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1053
1054         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1055         if (calibrating)
1056                 iwl_abort_notification_waits(&mvm->notif_wait);
1057
1058         /*
1059          * Stop the device if we run OPERATIONAL firmware or if we are in the
1060          * middle of the calibrations.
1061          */
1062         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1063 }
1064
1065 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1066 {
1067         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1068         struct ieee80211_tx_info *info;
1069
1070         info = IEEE80211_SKB_CB(skb);
1071         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1072         ieee80211_free_txskb(mvm->hw, skb);
1073 }
1074
1075 struct iwl_mvm_reprobe {
1076         struct device *dev;
1077         struct work_struct work;
1078 };
1079
1080 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1081 {
1082         struct iwl_mvm_reprobe *reprobe;
1083
1084         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1085         if (device_reprobe(reprobe->dev))
1086                 dev_err(reprobe->dev, "reprobe failed!\n");
1087         kfree(reprobe);
1088         module_put(THIS_MODULE);
1089 }
1090
1091 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1092 {
1093         struct iwl_mvm *mvm =
1094                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1095
1096         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1097                 return;
1098
1099         mutex_lock(&mvm->mutex);
1100
1101         /* stop recording */
1102         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1103                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1104         } else {
1105                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1106                 /* wait before we collect the data till the DBGC stop */
1107                 udelay(100);
1108         }
1109
1110         iwl_mvm_fw_error_dump(mvm);
1111
1112         /* start recording again if the firmware is not crashed */
1113         WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1114                      mvm->fw->dbg_dest_tlv &&
1115                      iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1116
1117         mutex_unlock(&mvm->mutex);
1118
1119         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1120 }
1121
1122 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1123 {
1124         iwl_abort_notification_waits(&mvm->notif_wait);
1125
1126         /*
1127          * This is a bit racy, but worst case we tell mac80211 about
1128          * a stopped/aborted scan when that was already done which
1129          * is not a problem. It is necessary to abort any os scan
1130          * here because mac80211 requires having the scan cleared
1131          * before restarting.
1132          * We'll reset the scan_status to NONE in restart cleanup in
1133          * the next start() call from mac80211. If restart isn't called
1134          * (no fw restart) scan status will stay busy.
1135          */
1136         iwl_mvm_report_scan_aborted(mvm);
1137
1138         /*
1139          * If we're restarting already, don't cycle restarts.
1140          * If INIT fw asserted, it will likely fail again.
1141          * If WoWLAN fw asserted, don't restart either, mac80211
1142          * can't recover this since we're already half suspended.
1143          */
1144         if (!mvm->restart_fw && fw_error) {
1145                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1146                                             NULL);
1147         } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1148                                     &mvm->status)) {
1149                 struct iwl_mvm_reprobe *reprobe;
1150
1151                 IWL_ERR(mvm,
1152                         "Firmware error during reconfiguration - reprobe!\n");
1153
1154                 /*
1155                  * get a module reference to avoid doing this while unloading
1156                  * anyway and to avoid scheduling a work with code that's
1157                  * being removed.
1158                  */
1159                 if (!try_module_get(THIS_MODULE)) {
1160                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1161                         return;
1162                 }
1163
1164                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1165                 if (!reprobe) {
1166                         module_put(THIS_MODULE);
1167                         return;
1168                 }
1169                 reprobe->dev = mvm->trans->dev;
1170                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1171                 schedule_work(&reprobe->work);
1172         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1173                 /* don't let the transport/FW power down */
1174                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1175
1176                 if (fw_error && mvm->restart_fw > 0)
1177                         mvm->restart_fw--;
1178                 ieee80211_restart_hw(mvm->hw);
1179         }
1180 }
1181
1182 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1183 {
1184         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1185
1186         iwl_mvm_dump_nic_error_log(mvm);
1187
1188         iwl_mvm_nic_restart(mvm, true);
1189 }
1190
1191 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1192 {
1193         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1194
1195         WARN_ON(1);
1196         iwl_mvm_nic_restart(mvm, true);
1197 }
1198
1199 struct iwl_d0i3_iter_data {
1200         struct iwl_mvm *mvm;
1201         struct ieee80211_vif *connected_vif;
1202         u8 ap_sta_id;
1203         u8 vif_count;
1204         u8 offloading_tid;
1205         bool disable_offloading;
1206 };
1207
1208 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1209                                         struct ieee80211_vif *vif,
1210                                         struct iwl_d0i3_iter_data *iter_data)
1211 {
1212         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1213         struct ieee80211_sta *ap_sta;
1214         struct iwl_mvm_sta *mvmsta;
1215         u32 available_tids = 0;
1216         u8 tid;
1217
1218         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1219                     mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1220                 return false;
1221
1222         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
1223         if (IS_ERR_OR_NULL(ap_sta))
1224                 return false;
1225
1226         mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
1227         spin_lock_bh(&mvmsta->lock);
1228         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1229                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1230
1231                 /*
1232                  * in case of pending tx packets, don't use this tid
1233                  * for offloading in order to prevent reuse of the same
1234                  * qos seq counters.
1235                  */
1236                 if (iwl_mvm_tid_queued(tid_data))
1237                         continue;
1238
1239                 if (tid_data->state != IWL_AGG_OFF)
1240                         continue;
1241
1242                 available_tids |= BIT(tid);
1243         }
1244         spin_unlock_bh(&mvmsta->lock);
1245
1246         /*
1247          * disallow protocol offloading if we have no available tid
1248          * (with no pending frames and no active aggregation,
1249          * as we don't handle "holes" properly - the scheduler needs the
1250          * frame's seq number and TFD index to match)
1251          */
1252         if (!available_tids)
1253                 return true;
1254
1255         /* for simplicity, just use the first available tid */
1256         iter_data->offloading_tid = ffs(available_tids) - 1;
1257         return false;
1258 }
1259
1260 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1261                                         struct ieee80211_vif *vif)
1262 {
1263         struct iwl_d0i3_iter_data *data = _data;
1264         struct iwl_mvm *mvm = data->mvm;
1265         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1266         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1267
1268         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1269         if (vif->type != NL80211_IFTYPE_STATION ||
1270             !vif->bss_conf.assoc)
1271                 return;
1272
1273         /*
1274          * in case of pending tx packets or active aggregations,
1275          * avoid offloading features in order to prevent reuse of
1276          * the same qos seq counters.
1277          */
1278         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1279                 data->disable_offloading = true;
1280
1281         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1282         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1283                                    false, flags);
1284
1285         /*
1286          * on init/association, mvm already configures POWER_TABLE_CMD
1287          * and REPLY_MCAST_FILTER_CMD, so currently don't
1288          * reconfigure them (we might want to use different
1289          * params later on, though).
1290          */
1291         data->ap_sta_id = mvmvif->ap_sta_id;
1292         data->vif_count++;
1293
1294         /*
1295          * no new commands can be sent at this stage, so it's safe
1296          * to save the vif pointer during d0i3 entrance.
1297          */
1298         data->connected_vif = vif;
1299 }
1300
1301 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1302                                     struct iwl_wowlan_config_cmd *cmd,
1303                                     struct iwl_d0i3_iter_data *iter_data)
1304 {
1305         struct ieee80211_sta *ap_sta;
1306         struct iwl_mvm_sta *mvm_ap_sta;
1307
1308         if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1309                 return;
1310
1311         rcu_read_lock();
1312
1313         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1314         if (IS_ERR_OR_NULL(ap_sta))
1315                 goto out;
1316
1317         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1318         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1319         cmd->offloading_tid = iter_data->offloading_tid;
1320         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1321                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1322         /*
1323          * The d0i3 uCode takes care of the nonqos counters,
1324          * so configure only the qos seq ones.
1325          */
1326         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1327 out:
1328         rcu_read_unlock();
1329 }
1330
1331 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1332 {
1333         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1334         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1335         int ret;
1336         struct iwl_d0i3_iter_data d0i3_iter_data = {
1337                 .mvm = mvm,
1338         };
1339         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1340                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1341                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1342                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1343         };
1344         struct iwl_d3_manager_config d3_cfg_cmd = {
1345                 .min_sleep_time = cpu_to_le32(1000),
1346                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1347         };
1348
1349         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1350
1351         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1352                 return -EINVAL;
1353
1354         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1355
1356         /*
1357          * iwl_mvm_ref_sync takes a reference before checking the flag.
1358          * so by checking there is no held reference we prevent a state
1359          * in which iwl_mvm_ref_sync continues successfully while we
1360          * configure the firmware to enter d0i3
1361          */
1362         if (iwl_mvm_ref_taken(mvm)) {
1363                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1364                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1365                 wake_up(&mvm->d0i3_exit_waitq);
1366                 return 1;
1367         }
1368
1369         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1370                                                    IEEE80211_IFACE_ITER_NORMAL,
1371                                                    iwl_mvm_enter_d0i3_iterator,
1372                                                    &d0i3_iter_data);
1373         if (d0i3_iter_data.vif_count == 1) {
1374                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1375                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1376         } else {
1377                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1378                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1379                 mvm->d0i3_offloading = false;
1380         }
1381
1382         /* make sure we have no running tx while configuring the seqno */
1383         synchronize_net();
1384
1385         /* Flush the hw queues, in case something got queued during entry */
1386         ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1387         if (ret)
1388                 return ret;
1389
1390         /* configure wowlan configuration only if needed */
1391         if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1392                 /* wake on beacons only if beacon storing isn't supported */
1393                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1394                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1395                         wowlan_config_cmd.wakeup_filter |=
1396                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1397
1398                 iwl_mvm_wowlan_config_key_params(mvm,
1399                                                  d0i3_iter_data.connected_vif,
1400                                                  true, flags);
1401
1402                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1403                                         &d0i3_iter_data);
1404
1405                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1406                                            sizeof(wowlan_config_cmd),
1407                                            &wowlan_config_cmd);
1408                 if (ret)
1409                         return ret;
1410         }
1411
1412         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1413                                     flags | CMD_MAKE_TRANS_IDLE,
1414                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1415 }
1416
1417 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1418                                        struct ieee80211_vif *vif)
1419 {
1420         struct iwl_mvm *mvm = _data;
1421         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1422
1423         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1424         if (vif->type != NL80211_IFTYPE_STATION ||
1425             !vif->bss_conf.assoc)
1426                 return;
1427
1428         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1429 }
1430
1431 struct iwl_mvm_d0i3_exit_work_iter_data {
1432         struct iwl_mvm *mvm;
1433         struct iwl_wowlan_status *status;
1434         u32 wakeup_reasons;
1435 };
1436
1437 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1438                                         struct ieee80211_vif *vif)
1439 {
1440         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1441         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1442         u32 reasons = data->wakeup_reasons;
1443
1444         /* consider only the relevant station interface */
1445         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1446             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1447                 return;
1448
1449         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1450                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1451         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1452                 ieee80211_beacon_loss(vif);
1453         else
1454                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1455 }
1456
1457 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1458 {
1459         struct ieee80211_sta *sta = NULL;
1460         struct iwl_mvm_sta *mvm_ap_sta;
1461         int i;
1462         bool wake_queues = false;
1463
1464         lockdep_assert_held(&mvm->mutex);
1465
1466         spin_lock_bh(&mvm->d0i3_tx_lock);
1467
1468         if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1469                 goto out;
1470
1471         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1472
1473         /* get the sta in order to update seq numbers and re-enqueue skbs */
1474         sta = rcu_dereference_protected(
1475                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1476                         lockdep_is_held(&mvm->mutex));
1477
1478         if (IS_ERR_OR_NULL(sta)) {
1479                 sta = NULL;
1480                 goto out;
1481         }
1482
1483         if (mvm->d0i3_offloading && qos_seq) {
1484                 /* update qos seq numbers if offloading was enabled */
1485                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1486                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1487                         u16 seq = le16_to_cpu(qos_seq[i]);
1488                         /* firmware stores last-used one, we store next one */
1489                         seq += 0x10;
1490                         mvm_ap_sta->tid_data[i].seq_number = seq;
1491                 }
1492         }
1493 out:
1494         /* re-enqueue (or drop) all packets */
1495         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1496                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1497
1498                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1499                         ieee80211_free_txskb(mvm->hw, skb);
1500
1501                 /* if the skb_queue is not empty, we need to wake queues */
1502                 wake_queues = true;
1503         }
1504         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1505         wake_up(&mvm->d0i3_exit_waitq);
1506         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1507         if (wake_queues)
1508                 ieee80211_wake_queues(mvm->hw);
1509
1510         spin_unlock_bh(&mvm->d0i3_tx_lock);
1511 }
1512
1513 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1514 {
1515         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1516         struct iwl_host_cmd get_status_cmd = {
1517                 .id = WOWLAN_GET_STATUSES,
1518                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1519         };
1520         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1521                 .mvm = mvm,
1522         };
1523
1524         struct iwl_wowlan_status *status;
1525         int ret;
1526         u32 wakeup_reasons = 0;
1527         __le16 *qos_seq = NULL;
1528
1529         mutex_lock(&mvm->mutex);
1530         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1531         if (ret)
1532                 goto out;
1533
1534         if (!get_status_cmd.resp_pkt)
1535                 goto out;
1536
1537         status = (void *)get_status_cmd.resp_pkt->data;
1538         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1539         qos_seq = status->qos_seq_ctr;
1540
1541         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1542
1543         iter_data.wakeup_reasons = wakeup_reasons;
1544         iter_data.status = status;
1545         ieee80211_iterate_active_interfaces(mvm->hw,
1546                                             IEEE80211_IFACE_ITER_NORMAL,
1547                                             iwl_mvm_d0i3_exit_work_iter,
1548                                             &iter_data);
1549 out:
1550         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1551
1552         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1553                        wakeup_reasons);
1554
1555         /* qos_seq might point inside resp_pkt, so free it only now */
1556         if (get_status_cmd.resp_pkt)
1557                 iwl_free_resp(&get_status_cmd);
1558
1559         /* the FW might have updated the regdomain */
1560         iwl_mvm_update_changed_regdom(mvm);
1561
1562         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1563         mutex_unlock(&mvm->mutex);
1564 }
1565
1566 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1567 {
1568         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1569                     CMD_WAKE_UP_TRANS;
1570         int ret;
1571
1572         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1573
1574         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1575                 return -EINVAL;
1576
1577         mutex_lock(&mvm->d0i3_suspend_mutex);
1578         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1579                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1580                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1581                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1582                 return 0;
1583         }
1584         mutex_unlock(&mvm->d0i3_suspend_mutex);
1585
1586         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1587         if (ret)
1588                 goto out;
1589
1590         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1591                                                    IEEE80211_IFACE_ITER_NORMAL,
1592                                                    iwl_mvm_exit_d0i3_iterator,
1593                                                    mvm);
1594 out:
1595         schedule_work(&mvm->d0i3_exit_work);
1596         return ret;
1597 }
1598
1599 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1600 {
1601         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1602
1603         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1604         return _iwl_mvm_exit_d0i3(mvm);
1605 }
1606
1607 #define IWL_MVM_COMMON_OPS                                      \
1608         /* these could be differentiated */                     \
1609         .async_cb = iwl_mvm_async_cb,                           \
1610         .queue_full = iwl_mvm_stop_sw_queue,                    \
1611         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1612         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1613         .free_skb = iwl_mvm_free_skb,                           \
1614         .nic_error = iwl_mvm_nic_error,                         \
1615         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1616         .nic_config = iwl_mvm_nic_config,                       \
1617         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1618         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1619         /* as we only register one, these MUST be common! */    \
1620         .start = iwl_op_mode_mvm_start,                         \
1621         .stop = iwl_op_mode_mvm_stop
1622
1623 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1624         IWL_MVM_COMMON_OPS,
1625         .rx = iwl_mvm_rx,
1626 };
1627
1628 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1629                               struct napi_struct *napi,
1630                               struct iwl_rx_cmd_buffer *rxb,
1631                               unsigned int queue)
1632 {
1633         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1634         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1635
1636         if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1637                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1638         else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
1639                           pkt->hdr.group_id == DATA_PATH_GROUP))
1640                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1641         else
1642                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1643 }
1644
1645 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1646         IWL_MVM_COMMON_OPS,
1647         .rx = iwl_mvm_rx_mq,
1648         .rx_rss = iwl_mvm_rx_mq_rss,
1649 };