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.
  19  *
  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
  24  *
  25  * The full GNU General Public License is included in this distribution
  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,
  58  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  59  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  60  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  61  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  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         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 590
 591         /*
 592          * Populate the state variables that the transport layer needs
 593          * to know about.
 594          */
 595         trans_cfg.op_mode = op_mode;
 596         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 597         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 598         switch (iwlwifi_mod_params.amsdu_size) {
 599         case IWL_AMSDU_4K:
 600                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 601                 break;
 602         case IWL_AMSDU_8K:
 603                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 604                 break;
 605         case IWL_AMSDU_12K:
 606                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 607                 break;
 608         default:
 609                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 610                        iwlwifi_mod_params.amsdu_size);
 611                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 612         }
 613         trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
 614                                                IWL_UCODE_TLV_API_WIDE_CMD_HDR);
 615
 616         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
 617                 trans_cfg.bc_table_dword = true;
 618
 619         trans_cfg.command_groups = iwl_mvm_groups;
 620         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 621
 622         if (iwl_mvm_is_dqa_supported(mvm))
 623                 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 624         else
 625                 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 626         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 627         trans_cfg.scd_set_active = true;
 628
 629         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 630         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 631
 632         /* Set a short watchdog for the command queue */
 633         trans_cfg.cmd_q_wdg_timeout =
 634                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 635
 636         snprintf(mvm->hw->wiphy->fw_version,
 637                  sizeof(mvm->hw->wiphy->fw_version),
 638                  "%s", fw->fw_version);
 639
 640         /* Configure transport layer */
 641         iwl_trans_configure(mvm->trans, &trans_cfg);
 642
 643         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 644         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 645         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 646         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 647                sizeof(trans->dbg_conf_tlv));
 648         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 649
 650         /* set up notification wait support */
 651         iwl_notification_wait_init(&mvm->notif_wait);
 652
 653         /* Init phy db */
 654         mvm->phy_db = iwl_phy_db_init(trans);
 655         if (!mvm->phy_db) {
 656                 IWL_ERR(mvm, "Cannot init phy_db\n");
 657                 goto out_free;
 658         }
 659
 660         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 661                  mvm->cfg->name, mvm->trans->hw_rev);
 662
 663         if (iwlwifi_mod_params.nvm_file)
 664                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 665         else
 666                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 667                                  "working without external nvm file\n");
 668
 669         if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
 670                  "not allowing power-up and not having nvm_file\n"))
 671                 goto out_free;
 672
 673         /*
 674          * Even if nvm exists in the nvm_file driver should read again the nvm
 675          * from the nic because there might be entries that exist in the OTP
 676          * and not in the file.
 677          * for nics with no_power_up_nic_in_init: rely completley on nvm_file
 678          */
 679         if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
 680                 err = iwl_nvm_init(mvm, false);
 681                 if (err)
 682                         goto out_free;
 683         } else {
 684                 err = iwl_trans_start_hw(mvm->trans);
 685                 if (err)
 686                         goto out_free;
 687
 688                 mutex_lock(&mvm->mutex);
 689                 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 690                 err = iwl_run_init_mvm_ucode(mvm, true);
 691                 if (!err || !iwlmvm_mod_params.init_dbg)
 692                         iwl_mvm_stop_device(mvm);
 693                 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 694                 mutex_unlock(&mvm->mutex);
 695                 /* returns 0 if successful, 1 if success but in rfkill */
 696                 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
 697                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 698                         goto out_free;
 699                 }
 700         }
 701
 702         scan_size = iwl_mvm_scan_size(mvm);
 703
 704         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 705         if (!mvm->scan_cmd)
 706                 goto out_free;
 707
 708         /* Set EBS as successful as long as not stated otherwise by the FW. */
 709         mvm->last_ebs_successful = true;
 710
 711         err = iwl_mvm_mac_setup_register(mvm);
 712         if (err)
 713                 goto out_free;
 714
 715         min_backoff = calc_min_backoff(trans, cfg);
 716         iwl_mvm_thermal_initialize(mvm, min_backoff);
 717
 718         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 719         if (err)
 720                 goto out_unregister;
 721
 722         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 723
 724         /* The transport always starts with a taken reference, we can
 725          * release it now if d0i3 is supported */
 726         if (iwl_mvm_is_d0i3_supported(mvm))
 727                 iwl_trans_unref(mvm->trans);
 728
 729         iwl_mvm_tof_init(mvm);
 730
 731         setup_timer(&mvm->scan_timer, iwl_mvm_scan_timeout,
 732                     (unsigned long)mvm);
 733
 734         return op_mode;
 735
 736  out_unregister:
 737         ieee80211_unregister_hw(mvm->hw);
 738         iwl_mvm_leds_exit(mvm);
 739         iwl_mvm_thermal_exit(mvm);
 740  out_free:
 741         flush_delayed_work(&mvm->fw_dump_wk);
 742         iwl_phy_db_free(mvm->phy_db);
 743         kfree(mvm->scan_cmd);
 744         if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
 745                 iwl_trans_op_mode_leave(trans);
 746         ieee80211_free_hw(mvm->hw);
 747         return NULL;
 748 }
 749
 750 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 751 {
 752         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 753         int i;
 754
 755         /* If d0i3 is supported, we have released the reference that
 756          * the transport started with, so we should take it back now
 757          * that we are leaving.
 758          */
 759         if (iwl_mvm_is_d0i3_supported(mvm))
 760                 iwl_trans_ref(mvm->trans);
 761
 762         iwl_mvm_leds_exit(mvm);
 763
 764         iwl_mvm_thermal_exit(mvm);
 765
 766         ieee80211_unregister_hw(mvm->hw);
 767
 768         kfree(mvm->scan_cmd);
 769         kfree(mvm->mcast_filter_cmd);
 770         mvm->mcast_filter_cmd = NULL;
 771
 772 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 773         kfree(mvm->d3_resume_sram);
 774 #endif
 775
 776         iwl_trans_op_mode_leave(mvm->trans);
 777
 778         iwl_phy_db_free(mvm->phy_db);
 779         mvm->phy_db = NULL;
 780
 781         iwl_free_nvm_data(mvm->nvm_data);
 782         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 783                 kfree(mvm->nvm_sections[i].data);
 784
 785         iwl_mvm_tof_clean(mvm);
 786
 787         del_timer_sync(&mvm->scan_timer);
 788
 789         mutex_destroy(&mvm->mutex);
 790         mutex_destroy(&mvm->d0i3_suspend_mutex);
 791
 792         ieee80211_free_hw(mvm->hw);
 793 }
 794
 795 struct iwl_async_handler_entry {
 796         struct list_head list;
 797         struct iwl_rx_cmd_buffer rxb;
 798         enum iwl_rx_handler_context context;
 799         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 800 };
 801
 802 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 803 {
 804         struct iwl_async_handler_entry *entry, *tmp;
 805
 806         spin_lock_bh(&mvm->async_handlers_lock);
 807         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 808                 iwl_free_rxb(&entry->rxb);
 809                 list_del(&entry->list);
 810                 kfree(entry);
 811         }
 812         spin_unlock_bh(&mvm->async_handlers_lock);
 813 }
 814
 815 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 816 {
 817         struct iwl_mvm *mvm =
 818                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 819         struct iwl_async_handler_entry *entry, *tmp;
 820         struct list_head local_list;
 821
 822         INIT_LIST_HEAD(&local_list);
 823
 824         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 825
 826         /*
 827          * Sync with Rx path with a lock. Remove all the entries from this list,
 828          * add them to a local one (lock free), and then handle them.
 829          */
 830         spin_lock_bh(&mvm->async_handlers_lock);
 831         list_splice_init(&mvm->async_handlers_list, &local_list);
 832         spin_unlock_bh(&mvm->async_handlers_lock);
 833
 834         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 835                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 836                         mutex_lock(&mvm->mutex);
 837                 entry->fn(mvm, &entry->rxb);
 838                 iwl_free_rxb(&entry->rxb);
 839                 list_del(&entry->list);
 840                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 841                         mutex_unlock(&mvm->mutex);
 842                 kfree(entry);
 843         }
 844 }
 845
 846 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 847                                             struct iwl_rx_packet *pkt)
 848 {
 849         struct iwl_fw_dbg_trigger_tlv *trig;
 850         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 851         int i;
 852
 853         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 854                 return;
 855
 856         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 857         cmds_trig = (void *)trig->data;
 858
 859         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 860                 return;
 861
 862         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 863                 /* don't collect on CMD 0 */
 864                 if (!cmds_trig->cmds[i].cmd_id)
 865                         break;
 866
 867                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 868                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 869                         continue;
 870
 871                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 872                                             "CMD 0x%02x.%02x received",
 873                                             pkt->hdr.group_id, pkt->hdr.cmd);
 874                 break;
 875         }
 876 }
 877
 878 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 879                               struct iwl_rx_cmd_buffer *rxb,
 880                               struct iwl_rx_packet *pkt)
 881 {
 882         int i;
 883
 884         iwl_mvm_rx_check_trigger(mvm, pkt);
 885
 886         /*
 887          * Do the notification wait before RX handlers so
 888          * even if the RX handler consumes the RXB we have
 889          * access to it in the notification wait entry.
 890          */
 891         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 892
 893         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 894                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 895                 struct iwl_async_handler_entry *entry;
 896
 897                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 898                         continue;
 899
 900                 if (rx_h->context == RX_HANDLER_SYNC) {
 901                         rx_h->fn(mvm, rxb);
 902                         return;
 903                 }
 904
 905                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 906                 /* we can't do much... */
 907                 if (!entry)
 908                         return;
 909
 910                 entry->rxb._page = rxb_steal_page(rxb);
 911                 entry->rxb._offset = rxb->_offset;
 912                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 913                 entry->fn = rx_h->fn;
 914                 entry->context = rx_h->context;
 915                 spin_lock(&mvm->async_handlers_lock);
 916                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 917                 spin_unlock(&mvm->async_handlers_lock);
 918                 schedule_work(&mvm->async_handlers_wk);
 919                 break;
 920         }
 921 }
 922
 923 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 924                        struct napi_struct *napi,
 925                        struct iwl_rx_cmd_buffer *rxb)
 926 {
 927         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 928         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 929
 930         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 931                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 932         else if (pkt->hdr.cmd == FRAME_RELEASE)
 933                 iwl_mvm_rx_frame_release(mvm, rxb, 0);
 934         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 935                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 936         else
 937                 iwl_mvm_rx_common(mvm, rxb, pkt);
 938 }
 939
 940 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
 941                           struct napi_struct *napi,
 942                           struct iwl_rx_cmd_buffer *rxb)
 943 {
 944         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 945         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 946
 947         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 948                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
 949         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 950                 iwl_mvm_rx_phy_cmd_mq(mvm, rxb);
 951         else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
 952                           pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
 953                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
 954         else
 955                 iwl_mvm_rx_common(mvm, rxb, pkt);
 956 }
 957
 958 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
 959 {
 960         int q;
 961
 962         if (WARN_ON_ONCE(!mq))
 963                 return;
 964
 965         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
 966                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
 967                         IWL_DEBUG_TX_QUEUES(mvm,
 968                                             "mac80211 %d already stopped\n", q);
 969                         continue;
 970                 }
 971
 972                 ieee80211_stop_queue(mvm->hw, q);
 973         }
 974 }
 975
 976 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
 977                              const struct iwl_device_cmd *cmd)
 978 {
 979         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 980
 981         /*
 982          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
 983          * commands that need to block the Tx queues.
 984          */
 985         iwl_trans_block_txq_ptrs(mvm->trans, false);
 986 }
 987
 988 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
 989 {
 990         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 991         unsigned long mq;
 992
 993         spin_lock_bh(&mvm->queue_info_lock);
 994         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
 995         spin_unlock_bh(&mvm->queue_info_lock);
 996
 997         iwl_mvm_stop_mac_queues(mvm, mq);
 998 }
 999
1000 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1001 {
1002         int q;
1003
1004         if (WARN_ON_ONCE(!mq))
1005                 return;
1006
1007         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1008                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1009                         IWL_DEBUG_TX_QUEUES(mvm,
1010                                             "mac80211 %d still stopped\n", q);
1011                         continue;
1012                 }
1013
1014                 ieee80211_wake_queue(mvm->hw, q);
1015         }
1016 }
1017
1018 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1019 {
1020         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1021         unsigned long mq;
1022
1023         spin_lock_bh(&mvm->queue_info_lock);
1024         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1025         spin_unlock_bh(&mvm->queue_info_lock);
1026
1027         iwl_mvm_start_mac_queues(mvm, mq);
1028 }
1029
1030 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1031 {
1032         if (state)
1033                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1034         else
1035                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1036
1037         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1038 }
1039
1040 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1041 {
1042         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1043         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1044
1045         if (state)
1046                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1047         else
1048                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1049
1050         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1051
1052         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1053         if (calibrating)
1054                 iwl_abort_notification_waits(&mvm->notif_wait);
1055
1056         /*
1057          * Stop the device if we run OPERATIONAL firmware or if we are in the
1058          * middle of the calibrations.
1059          */
1060         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1061 }
1062
1063 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1064 {
1065         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1066         struct ieee80211_tx_info *info;
1067
1068         info = IEEE80211_SKB_CB(skb);
1069         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1070         ieee80211_free_txskb(mvm->hw, skb);
1071 }
1072
1073 struct iwl_mvm_reprobe {
1074         struct device *dev;
1075         struct work_struct work;
1076 };
1077
1078 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1079 {
1080         struct iwl_mvm_reprobe *reprobe;
1081
1082         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1083         if (device_reprobe(reprobe->dev))
1084                 dev_err(reprobe->dev, "reprobe failed!\n");
1085         kfree(reprobe);
1086         module_put(THIS_MODULE);
1087 }
1088
1089 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1090 {
1091         struct iwl_mvm *mvm =
1092                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1093
1094         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1095                 return;
1096
1097         mutex_lock(&mvm->mutex);
1098
1099         /* stop recording */
1100         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1101                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1102         } else {
1103                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1104                 /* wait before we collect the data till the DBGC stop */
1105                 udelay(100);
1106         }
1107
1108         iwl_mvm_fw_error_dump(mvm);
1109
1110         /* start recording again if the firmware is not crashed */
1111         WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1112                      mvm->fw->dbg_dest_tlv &&
1113                      iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1114
1115         mutex_unlock(&mvm->mutex);
1116
1117         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1118 }
1119
1120 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1121 {
1122         iwl_abort_notification_waits(&mvm->notif_wait);
1123
1124         /*
1125          * This is a bit racy, but worst case we tell mac80211 about
1126          * a stopped/aborted scan when that was already done which
1127          * is not a problem. It is necessary to abort any os scan
1128          * here because mac80211 requires having the scan cleared
1129          * before restarting.
1130          * We'll reset the scan_status to NONE in restart cleanup in
1131          * the next start() call from mac80211. If restart isn't called
1132          * (no fw restart) scan status will stay busy.
1133          */
1134         iwl_mvm_report_scan_aborted(mvm);
1135
1136         /*
1137          * If we're restarting already, don't cycle restarts.
1138          * If INIT fw asserted, it will likely fail again.
1139          * If WoWLAN fw asserted, don't restart either, mac80211
1140          * can't recover this since we're already half suspended.
1141          */
1142         if (!mvm->restart_fw && fw_error) {
1143                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1144                                             NULL);
1145         } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1146                                     &mvm->status)) {
1147                 struct iwl_mvm_reprobe *reprobe;
1148
1149                 IWL_ERR(mvm,
1150                         "Firmware error during reconfiguration - reprobe!\n");
1151
1152                 /*
1153                  * get a module reference to avoid doing this while unloading
1154                  * anyway and to avoid scheduling a work with code that's
1155                  * being removed.
1156                  */
1157                 if (!try_module_get(THIS_MODULE)) {
1158                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1159                         return;
1160                 }
1161
1162                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1163                 if (!reprobe) {
1164                         module_put(THIS_MODULE);
1165                         return;
1166                 }
1167                 reprobe->dev = mvm->trans->dev;
1168                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1169                 schedule_work(&reprobe->work);
1170         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1171                 /* don't let the transport/FW power down */
1172                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1173
1174                 if (fw_error && mvm->restart_fw > 0)
1175                         mvm->restart_fw--;
1176                 ieee80211_restart_hw(mvm->hw);
1177         }
1178 }
1179
1180 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1181 {
1182         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1183
1184         iwl_mvm_dump_nic_error_log(mvm);
1185
1186         iwl_mvm_nic_restart(mvm, true);
1187 }
1188
1189 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1190 {
1191         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1192
1193         WARN_ON(1);
1194         iwl_mvm_nic_restart(mvm, true);
1195 }
1196
1197 struct iwl_d0i3_iter_data {
1198         struct iwl_mvm *mvm;
1199         struct ieee80211_vif *connected_vif;
1200         u8 ap_sta_id;
1201         u8 vif_count;
1202         u8 offloading_tid;
1203         bool disable_offloading;
1204 };
1205
1206 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1207                                         struct ieee80211_vif *vif,
1208                                         struct iwl_d0i3_iter_data *iter_data)
1209 {
1210         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1211         struct ieee80211_sta *ap_sta;
1212         struct iwl_mvm_sta *mvmsta;
1213         u32 available_tids = 0;
1214         u8 tid;
1215
1216         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1217                     mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1218                 return false;
1219
1220         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
1221         if (IS_ERR_OR_NULL(ap_sta))
1222                 return false;
1223
1224         mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
1225         spin_lock_bh(&mvmsta->lock);
1226         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1227                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1228
1229                 /*
1230                  * in case of pending tx packets, don't use this tid
1231                  * for offloading in order to prevent reuse of the same
1232                  * qos seq counters.
1233                  */
1234                 if (iwl_mvm_tid_queued(tid_data))
1235                         continue;
1236
1237                 if (tid_data->state != IWL_AGG_OFF)
1238                         continue;
1239
1240                 available_tids |= BIT(tid);
1241         }
1242         spin_unlock_bh(&mvmsta->lock);
1243
1244         /*
1245          * disallow protocol offloading if we have no available tid
1246          * (with no pending frames and no active aggregation,
1247          * as we don't handle "holes" properly - the scheduler needs the
1248          * frame's seq number and TFD index to match)
1249          */
1250         if (!available_tids)
1251                 return true;
1252
1253         /* for simplicity, just use the first available tid */
1254         iter_data->offloading_tid = ffs(available_tids) - 1;
1255         return false;
1256 }
1257
1258 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1259                                         struct ieee80211_vif *vif)
1260 {
1261         struct iwl_d0i3_iter_data *data = _data;
1262         struct iwl_mvm *mvm = data->mvm;
1263         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1264         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1265
1266         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1267         if (vif->type != NL80211_IFTYPE_STATION ||
1268             !vif->bss_conf.assoc)
1269                 return;
1270
1271         /*
1272          * in case of pending tx packets or active aggregations,
1273          * avoid offloading features in order to prevent reuse of
1274          * the same qos seq counters.
1275          */
1276         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1277                 data->disable_offloading = true;
1278
1279         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1280         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1281                                    false, flags);
1282
1283         /*
1284          * on init/association, mvm already configures POWER_TABLE_CMD
1285          * and REPLY_MCAST_FILTER_CMD, so currently don't
1286          * reconfigure them (we might want to use different
1287          * params later on, though).
1288          */
1289         data->ap_sta_id = mvmvif->ap_sta_id;
1290         data->vif_count++;
1291
1292         /*
1293          * no new commands can be sent at this stage, so it's safe
1294          * to save the vif pointer during d0i3 entrance.
1295          */
1296         data->connected_vif = vif;
1297 }
1298
1299 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1300                                     struct iwl_wowlan_config_cmd *cmd,
1301                                     struct iwl_d0i3_iter_data *iter_data)
1302 {
1303         struct ieee80211_sta *ap_sta;
1304         struct iwl_mvm_sta *mvm_ap_sta;
1305
1306         if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1307                 return;
1308
1309         rcu_read_lock();
1310
1311         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1312         if (IS_ERR_OR_NULL(ap_sta))
1313                 goto out;
1314
1315         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1316         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1317         cmd->offloading_tid = iter_data->offloading_tid;
1318         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1319                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1320         /*
1321          * The d0i3 uCode takes care of the nonqos counters,
1322          * so configure only the qos seq ones.
1323          */
1324         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1325 out:
1326         rcu_read_unlock();
1327 }
1328
1329 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1330 {
1331         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1332         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1333         int ret;
1334         struct iwl_d0i3_iter_data d0i3_iter_data = {
1335                 .mvm = mvm,
1336         };
1337         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1338                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1339                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1340                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1341         };
1342         struct iwl_d3_manager_config d3_cfg_cmd = {
1343                 .min_sleep_time = cpu_to_le32(1000),
1344                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1345         };
1346
1347         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1348
1349         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1350                 return -EINVAL;
1351
1352         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1353
1354         /*
1355          * iwl_mvm_ref_sync takes a reference before checking the flag.
1356          * so by checking there is no held reference we prevent a state
1357          * in which iwl_mvm_ref_sync continues successfully while we
1358          * configure the firmware to enter d0i3
1359          */
1360         if (iwl_mvm_ref_taken(mvm)) {
1361                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1362                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1363                 wake_up(&mvm->d0i3_exit_waitq);
1364                 return 1;
1365         }
1366
1367         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1368                                                    IEEE80211_IFACE_ITER_NORMAL,
1369                                                    iwl_mvm_enter_d0i3_iterator,
1370                                                    &d0i3_iter_data);
1371         if (d0i3_iter_data.vif_count == 1) {
1372                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1373                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1374         } else {
1375                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1376                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1377                 mvm->d0i3_offloading = false;
1378         }
1379
1380         /* make sure we have no running tx while configuring the seqno */
1381         synchronize_net();
1382
1383         /* Flush the hw queues, in case something got queued during entry */
1384         ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1385         if (ret)
1386                 return ret;
1387
1388         /* configure wowlan configuration only if needed */
1389         if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1390                 /* wake on beacons only if beacon storing isn't supported */
1391                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1392                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1393                         wowlan_config_cmd.wakeup_filter |=
1394                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1395
1396                 iwl_mvm_wowlan_config_key_params(mvm,
1397                                                  d0i3_iter_data.connected_vif,
1398                                                  true, flags);
1399
1400                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1401                                         &d0i3_iter_data);
1402
1403                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1404                                            sizeof(wowlan_config_cmd),
1405                                            &wowlan_config_cmd);
1406                 if (ret)
1407                         return ret;
1408         }
1409
1410         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1411                                     flags | CMD_MAKE_TRANS_IDLE,
1412                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1413 }
1414
1415 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1416                                        struct ieee80211_vif *vif)
1417 {
1418         struct iwl_mvm *mvm = _data;
1419         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1420
1421         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1422         if (vif->type != NL80211_IFTYPE_STATION ||
1423             !vif->bss_conf.assoc)
1424                 return;
1425
1426         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1427 }
1428
1429 struct iwl_mvm_d0i3_exit_work_iter_data {
1430         struct iwl_mvm *mvm;
1431         struct iwl_wowlan_status *status;
1432         u32 wakeup_reasons;
1433 };
1434
1435 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1436                                         struct ieee80211_vif *vif)
1437 {
1438         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1439         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1440         u32 reasons = data->wakeup_reasons;
1441
1442         /* consider only the relevant station interface */
1443         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1444             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1445                 return;
1446
1447         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1448                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1449         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1450                 ieee80211_beacon_loss(vif);
1451         else
1452                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1453 }
1454
1455 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1456 {
1457         struct ieee80211_sta *sta = NULL;
1458         struct iwl_mvm_sta *mvm_ap_sta;
1459         int i;
1460         bool wake_queues = false;
1461
1462         lockdep_assert_held(&mvm->mutex);
1463
1464         spin_lock_bh(&mvm->d0i3_tx_lock);
1465
1466         if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1467                 goto out;
1468
1469         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1470
1471         /* get the sta in order to update seq numbers and re-enqueue skbs */
1472         sta = rcu_dereference_protected(
1473                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1474                         lockdep_is_held(&mvm->mutex));
1475
1476         if (IS_ERR_OR_NULL(sta)) {
1477                 sta = NULL;
1478                 goto out;
1479         }
1480
1481         if (mvm->d0i3_offloading && qos_seq) {
1482                 /* update qos seq numbers if offloading was enabled */
1483                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1484                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1485                         u16 seq = le16_to_cpu(qos_seq[i]);
1486                         /* firmware stores last-used one, we store next one */
1487                         seq += 0x10;
1488                         mvm_ap_sta->tid_data[i].seq_number = seq;
1489                 }
1490         }
1491 out:
1492         /* re-enqueue (or drop) all packets */
1493         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1494                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1495
1496                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1497                         ieee80211_free_txskb(mvm->hw, skb);
1498
1499                 /* if the skb_queue is not empty, we need to wake queues */
1500                 wake_queues = true;
1501         }
1502         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1503         wake_up(&mvm->d0i3_exit_waitq);
1504         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1505         if (wake_queues)
1506                 ieee80211_wake_queues(mvm->hw);
1507
1508         spin_unlock_bh(&mvm->d0i3_tx_lock);
1509 }
1510
1511 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1512 {
1513         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1514         struct iwl_host_cmd get_status_cmd = {
1515                 .id = WOWLAN_GET_STATUSES,
1516                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1517         };
1518         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1519                 .mvm = mvm,
1520         };
1521
1522         struct iwl_wowlan_status *status;
1523         int ret;
1524         u32 wakeup_reasons = 0;
1525         __le16 *qos_seq = NULL;
1526
1527         mutex_lock(&mvm->mutex);
1528         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1529         if (ret)
1530                 goto out;
1531
1532         if (!get_status_cmd.resp_pkt)
1533                 goto out;
1534
1535         status = (void *)get_status_cmd.resp_pkt->data;
1536         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1537         qos_seq = status->qos_seq_ctr;
1538
1539         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1540
1541         iter_data.wakeup_reasons = wakeup_reasons;
1542         iter_data.status = status;
1543         ieee80211_iterate_active_interfaces(mvm->hw,
1544                                             IEEE80211_IFACE_ITER_NORMAL,
1545                                             iwl_mvm_d0i3_exit_work_iter,
1546                                             &iter_data);
1547 out:
1548         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1549
1550         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1551                        wakeup_reasons);
1552
1553         /* qos_seq might point inside resp_pkt, so free it only now */
1554         if (get_status_cmd.resp_pkt)
1555                 iwl_free_resp(&get_status_cmd);
1556
1557         /* the FW might have updated the regdomain */
1558         iwl_mvm_update_changed_regdom(mvm);
1559
1560         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1561         mutex_unlock(&mvm->mutex);
1562 }
1563
1564 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1565 {
1566         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1567                     CMD_WAKE_UP_TRANS;
1568         int ret;
1569
1570         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1571
1572         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1573                 return -EINVAL;
1574
1575         mutex_lock(&mvm->d0i3_suspend_mutex);
1576         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1577                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1578                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1579                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1580                 return 0;
1581         }
1582         mutex_unlock(&mvm->d0i3_suspend_mutex);
1583
1584         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1585         if (ret)
1586                 goto out;
1587
1588         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1589                                                    IEEE80211_IFACE_ITER_NORMAL,
1590                                                    iwl_mvm_exit_d0i3_iterator,
1591                                                    mvm);
1592 out:
1593         schedule_work(&mvm->d0i3_exit_work);
1594         return ret;
1595 }
1596
1597 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1598 {
1599         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1600
1601         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1602         return _iwl_mvm_exit_d0i3(mvm);
1603 }
1604
1605 #define IWL_MVM_COMMON_OPS                                      \
1606         /* these could be differentiated */                     \
1607         .async_cb = iwl_mvm_async_cb,                           \
1608         .queue_full = iwl_mvm_stop_sw_queue,                    \
1609         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1610         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1611         .free_skb = iwl_mvm_free_skb,                           \
1612         .nic_error = iwl_mvm_nic_error,                         \
1613         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1614         .nic_config = iwl_mvm_nic_config,                       \
1615         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1616         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1617         /* as we only register one, these MUST be common! */    \
1618         .start = iwl_op_mode_mvm_start,                         \
1619         .stop = iwl_op_mode_mvm_stop
1620
1621 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1622         IWL_MVM_COMMON_OPS,
1623         .rx = iwl_mvm_rx,
1624 };
1625
1626 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1627                               struct napi_struct *napi,
1628                               struct iwl_rx_cmd_buffer *rxb,
1629                               unsigned int queue)
1630 {
1631         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1632         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1633
1634         if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1635                 iwl_mvm_rx_frame_release(mvm, rxb, queue);
1636         else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
1637                           pkt->hdr.group_id == DATA_PATH_GROUP))
1638                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1639         else
1640                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1641 }
1642
1643 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1644         IWL_MVM_COMMON_OPS,
1645         .rx = iwl_mvm_rx_mq,
1646         .rx_rss = iwl_mvm_rx_mq_rss,
1647 };