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         if (!iwl_mvm_is_dqa_supported(mvm)) {
 558                 mvm->first_agg_queue = 16;
 559                 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
 560         } else {
 561                 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
 562                 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
 563         }
 564         if (mvm->cfg->base_params->num_of_queues == 16) {
 565                 mvm->aux_queue = 11;
 566                 mvm->first_agg_queue = 12;
 567         }
 568         mvm->sf_state = SF_UNINIT;
 569         mvm->cur_ucode = IWL_UCODE_INIT;
 570         mvm->drop_bcn_ap_mode = true;
 571
 572         mutex_init(&mvm->mutex);
 573         mutex_init(&mvm->d0i3_suspend_mutex);
 574         spin_lock_init(&mvm->async_handlers_lock);
 575         INIT_LIST_HEAD(&mvm->time_event_list);
 576         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 577         INIT_LIST_HEAD(&mvm->async_handlers_list);
 578         spin_lock_init(&mvm->time_event_lock);
 579         spin_lock_init(&mvm->queue_info_lock);
 580
 581         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 582         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 583         INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
 584         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 585         INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
 586         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 587         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 588
 589         spin_lock_init(&mvm->d0i3_tx_lock);
 590         spin_lock_init(&mvm->refs_lock);
 591         skb_queue_head_init(&mvm->d0i3_tx);
 592         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 593
 594         atomic_set(&mvm->queue_sync_counter, 0);
 595
 596         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 597
 598         /*
 599          * Populate the state variables that the transport layer needs
 600          * to know about.
 601          */
 602         trans_cfg.op_mode = op_mode;
 603         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 604         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 605         switch (iwlwifi_mod_params.amsdu_size) {
 606         case IWL_AMSDU_DEF:
 607         case IWL_AMSDU_4K:
 608                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 609                 break;
 610         case IWL_AMSDU_8K:
 611                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 612                 break;
 613         case IWL_AMSDU_12K:
 614                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 615                 break;
 616         default:
 617                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 618                        iwlwifi_mod_params.amsdu_size);
 619                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 620         }
 621
 622         /* the hardware splits the A-MSDU */
 623         if (mvm->cfg->mq_rx_supported)
 624                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 625         trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
 626                                                IWL_UCODE_TLV_API_WIDE_CMD_HDR);
 627
 628         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
 629                 trans_cfg.bc_table_dword = true;
 630
 631         trans_cfg.command_groups = iwl_mvm_groups;
 632         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 633
 634         if (iwl_mvm_is_dqa_supported(mvm))
 635                 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 636         else
 637                 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 638         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 639         trans_cfg.scd_set_active = true;
 640
 641         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 642         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 643
 644         /* Set a short watchdog for the command queue */
 645         trans_cfg.cmd_q_wdg_timeout =
 646                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 647
 648         snprintf(mvm->hw->wiphy->fw_version,
 649                  sizeof(mvm->hw->wiphy->fw_version),
 650                  "%s", fw->fw_version);
 651
 652         /* Configure transport layer */
 653         iwl_trans_configure(mvm->trans, &trans_cfg);
 654
 655         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 656         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 657         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 658         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 659                sizeof(trans->dbg_conf_tlv));
 660         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 661
 662         /* set up notification wait support */
 663         iwl_notification_wait_init(&mvm->notif_wait);
 664
 665         /* Init phy db */
 666         mvm->phy_db = iwl_phy_db_init(trans);
 667         if (!mvm->phy_db) {
 668                 IWL_ERR(mvm, "Cannot init phy_db\n");
 669                 goto out_free;
 670         }
 671
 672         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 673                  mvm->cfg->name, mvm->trans->hw_rev);
 674
 675         if (iwlwifi_mod_params.nvm_file)
 676                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 677         else
 678                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 679                                  "working without external nvm file\n");
 680
 681         if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
 682                  "not allowing power-up and not having nvm_file\n"))
 683                 goto out_free;
 684
 685         /*
 686          * Even if nvm exists in the nvm_file driver should read again the nvm
 687          * from the nic because there might be entries that exist in the OTP
 688          * and not in the file.
 689          * for nics with no_power_up_nic_in_init: rely completley on nvm_file
 690          */
 691         if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
 692                 err = iwl_nvm_init(mvm, false);
 693                 if (err)
 694                         goto out_free;
 695         } else {
 696                 err = iwl_trans_start_hw(mvm->trans);
 697                 if (err)
 698                         goto out_free;
 699
 700                 mutex_lock(&mvm->mutex);
 701                 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 702                 err = iwl_run_init_mvm_ucode(mvm, true);
 703                 if (!err || !iwlmvm_mod_params.init_dbg)
 704                         iwl_mvm_stop_device(mvm);
 705                 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 706                 mutex_unlock(&mvm->mutex);
 707                 /* returns 0 if successful, 1 if success but in rfkill */
 708                 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
 709                         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 710                         goto out_free;
 711                 }
 712         }
 713
 714         scan_size = iwl_mvm_scan_size(mvm);
 715
 716         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 717         if (!mvm->scan_cmd)
 718                 goto out_free;
 719
 720         /* Set EBS as successful as long as not stated otherwise by the FW. */
 721         mvm->last_ebs_successful = true;
 722
 723         err = iwl_mvm_mac_setup_register(mvm);
 724         if (err)
 725                 goto out_free;
 726
 727         min_backoff = calc_min_backoff(trans, cfg);
 728         iwl_mvm_thermal_initialize(mvm, min_backoff);
 729
 730         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 731         if (err)
 732                 goto out_unregister;
 733
 734         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 735
 736         /* The transport always starts with a taken reference, we can
 737          * release it now if d0i3 is supported */
 738         if (iwl_mvm_is_d0i3_supported(mvm))
 739                 iwl_trans_unref(mvm->trans);
 740
 741         iwl_mvm_tof_init(mvm);
 742
 743         setup_timer(&mvm->scan_timer, iwl_mvm_scan_timeout,
 744                     (unsigned long)mvm);
 745
 746         return op_mode;
 747
 748  out_unregister:
 749         ieee80211_unregister_hw(mvm->hw);
 750         iwl_mvm_leds_exit(mvm);
 751         iwl_mvm_thermal_exit(mvm);
 752  out_free:
 753         flush_delayed_work(&mvm->fw_dump_wk);
 754         iwl_phy_db_free(mvm->phy_db);
 755         kfree(mvm->scan_cmd);
 756         if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
 757                 iwl_trans_op_mode_leave(trans);
 758         ieee80211_free_hw(mvm->hw);
 759         return NULL;
 760 }
 761
 762 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 763 {
 764         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 765         int i;
 766
 767         /* If d0i3 is supported, we have released the reference that
 768          * the transport started with, so we should take it back now
 769          * that we are leaving.
 770          */
 771         if (iwl_mvm_is_d0i3_supported(mvm))
 772                 iwl_trans_ref(mvm->trans);
 773
 774         iwl_mvm_leds_exit(mvm);
 775
 776         iwl_mvm_thermal_exit(mvm);
 777
 778         ieee80211_unregister_hw(mvm->hw);
 779
 780         kfree(mvm->scan_cmd);
 781         kfree(mvm->mcast_filter_cmd);
 782         mvm->mcast_filter_cmd = NULL;
 783
 784 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 785         kfree(mvm->d3_resume_sram);
 786 #endif
 787
 788         iwl_trans_op_mode_leave(mvm->trans);
 789
 790         iwl_phy_db_free(mvm->phy_db);
 791         mvm->phy_db = NULL;
 792
 793         iwl_free_nvm_data(mvm->nvm_data);
 794         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 795                 kfree(mvm->nvm_sections[i].data);
 796
 797         iwl_mvm_tof_clean(mvm);
 798
 799         del_timer_sync(&mvm->scan_timer);
 800
 801         mutex_destroy(&mvm->mutex);
 802         mutex_destroy(&mvm->d0i3_suspend_mutex);
 803
 804         ieee80211_free_hw(mvm->hw);
 805 }
 806
 807 struct iwl_async_handler_entry {
 808         struct list_head list;
 809         struct iwl_rx_cmd_buffer rxb;
 810         enum iwl_rx_handler_context context;
 811         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 812 };
 813
 814 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 815 {
 816         struct iwl_async_handler_entry *entry, *tmp;
 817
 818         spin_lock_bh(&mvm->async_handlers_lock);
 819         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 820                 iwl_free_rxb(&entry->rxb);
 821                 list_del(&entry->list);
 822                 kfree(entry);
 823         }
 824         spin_unlock_bh(&mvm->async_handlers_lock);
 825 }
 826
 827 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 828 {
 829         struct iwl_mvm *mvm =
 830                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 831         struct iwl_async_handler_entry *entry, *tmp;
 832         struct list_head local_list;
 833
 834         INIT_LIST_HEAD(&local_list);
 835
 836         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 837
 838         /*
 839          * Sync with Rx path with a lock. Remove all the entries from this list,
 840          * add them to a local one (lock free), and then handle them.
 841          */
 842         spin_lock_bh(&mvm->async_handlers_lock);
 843         list_splice_init(&mvm->async_handlers_list, &local_list);
 844         spin_unlock_bh(&mvm->async_handlers_lock);
 845
 846         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 847                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 848                         mutex_lock(&mvm->mutex);
 849                 entry->fn(mvm, &entry->rxb);
 850                 iwl_free_rxb(&entry->rxb);
 851                 list_del(&entry->list);
 852                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 853                         mutex_unlock(&mvm->mutex);
 854                 kfree(entry);
 855         }
 856 }
 857
 858 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 859                                             struct iwl_rx_packet *pkt)
 860 {
 861         struct iwl_fw_dbg_trigger_tlv *trig;
 862         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 863         int i;
 864
 865         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 866                 return;
 867
 868         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 869         cmds_trig = (void *)trig->data;
 870
 871         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 872                 return;
 873
 874         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 875                 /* don't collect on CMD 0 */
 876                 if (!cmds_trig->cmds[i].cmd_id)
 877                         break;
 878
 879                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 880                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 881                         continue;
 882
 883                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 884                                             "CMD 0x%02x.%02x received",
 885                                             pkt->hdr.group_id, pkt->hdr.cmd);
 886                 break;
 887         }
 888 }
 889
 890 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 891                               struct iwl_rx_cmd_buffer *rxb,
 892                               struct iwl_rx_packet *pkt)
 893 {
 894         int i;
 895
 896         iwl_mvm_rx_check_trigger(mvm, pkt);
 897
 898         /*
 899          * Do the notification wait before RX handlers so
 900          * even if the RX handler consumes the RXB we have
 901          * access to it in the notification wait entry.
 902          */
 903         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 904
 905         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 906                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 907                 struct iwl_async_handler_entry *entry;
 908
 909                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 910                         continue;
 911
 912                 if (rx_h->context == RX_HANDLER_SYNC) {
 913                         rx_h->fn(mvm, rxb);
 914                         return;
 915                 }
 916
 917                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 918                 /* we can't do much... */
 919                 if (!entry)
 920                         return;
 921
 922                 entry->rxb._page = rxb_steal_page(rxb);
 923                 entry->rxb._offset = rxb->_offset;
 924                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 925                 entry->fn = rx_h->fn;
 926                 entry->context = rx_h->context;
 927                 spin_lock(&mvm->async_handlers_lock);
 928                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 929                 spin_unlock(&mvm->async_handlers_lock);
 930                 schedule_work(&mvm->async_handlers_wk);
 931                 break;
 932         }
 933 }
 934
 935 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 936                        struct napi_struct *napi,
 937                        struct iwl_rx_cmd_buffer *rxb)
 938 {
 939         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 940         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 941
 942         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 943                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 944         else if (pkt->hdr.cmd == FRAME_RELEASE)
 945                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
 946         else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
 947                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 948         else
 949                 iwl_mvm_rx_common(mvm, rxb, pkt);
 950 }
 951
 952 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
 953                           struct napi_struct *napi,
 954                           struct iwl_rx_cmd_buffer *rxb)
 955 {
 956         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 957         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 958
 959         if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
 960                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
 961         else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
 962                           pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
 963                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
 964         else
 965                 iwl_mvm_rx_common(mvm, rxb, pkt);
 966 }
 967
 968 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
 969 {
 970         int q;
 971
 972         if (WARN_ON_ONCE(!mq))
 973                 return;
 974
 975         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
 976                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
 977                         IWL_DEBUG_TX_QUEUES(mvm,
 978                                             "mac80211 %d already stopped\n", q);
 979                         continue;
 980                 }
 981
 982                 ieee80211_stop_queue(mvm->hw, q);
 983         }
 984 }
 985
 986 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
 987                              const struct iwl_device_cmd *cmd)
 988 {
 989         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 990
 991         /*
 992          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
 993          * commands that need to block the Tx queues.
 994          */
 995         iwl_trans_block_txq_ptrs(mvm->trans, false);
 996 }
 997
 998 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
 999 {
1000         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1001         unsigned long mq;
1002
1003         spin_lock_bh(&mvm->queue_info_lock);
1004         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1005         spin_unlock_bh(&mvm->queue_info_lock);
1006
1007         iwl_mvm_stop_mac_queues(mvm, mq);
1008 }
1009
1010 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1011 {
1012         int q;
1013
1014         if (WARN_ON_ONCE(!mq))
1015                 return;
1016
1017         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1018                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1019                         IWL_DEBUG_TX_QUEUES(mvm,
1020                                             "mac80211 %d still stopped\n", q);
1021                         continue;
1022                 }
1023
1024                 ieee80211_wake_queue(mvm->hw, q);
1025         }
1026 }
1027
1028 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1029 {
1030         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1031         unsigned long mq;
1032
1033         spin_lock_bh(&mvm->queue_info_lock);
1034         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1035         spin_unlock_bh(&mvm->queue_info_lock);
1036
1037         iwl_mvm_start_mac_queues(mvm, mq);
1038 }
1039
1040 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1041 {
1042         if (state)
1043                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1044         else
1045                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1046
1047         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1048 }
1049
1050 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1051 {
1052         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1053         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1054
1055         if (state)
1056                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1057         else
1058                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1059
1060         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1061
1062         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1063         if (calibrating)
1064                 iwl_abort_notification_waits(&mvm->notif_wait);
1065
1066         /*
1067          * Stop the device if we run OPERATIONAL firmware or if we are in the
1068          * middle of the calibrations.
1069          */
1070         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1071 }
1072
1073 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1074 {
1075         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1076         struct ieee80211_tx_info *info;
1077
1078         info = IEEE80211_SKB_CB(skb);
1079         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1080         ieee80211_free_txskb(mvm->hw, skb);
1081 }
1082
1083 struct iwl_mvm_reprobe {
1084         struct device *dev;
1085         struct work_struct work;
1086 };
1087
1088 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1089 {
1090         struct iwl_mvm_reprobe *reprobe;
1091
1092         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1093         if (device_reprobe(reprobe->dev))
1094                 dev_err(reprobe->dev, "reprobe failed!\n");
1095         kfree(reprobe);
1096         module_put(THIS_MODULE);
1097 }
1098
1099 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1100 {
1101         struct iwl_mvm *mvm =
1102                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1103
1104         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1105                 return;
1106
1107         mutex_lock(&mvm->mutex);
1108
1109         /* stop recording */
1110         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1111                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1112         } else {
1113                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1114                 /* wait before we collect the data till the DBGC stop */
1115                 udelay(100);
1116         }
1117
1118         iwl_mvm_fw_error_dump(mvm);
1119
1120         /* start recording again if the firmware is not crashed */
1121         WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1122                      mvm->fw->dbg_dest_tlv &&
1123                      iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1124
1125         mutex_unlock(&mvm->mutex);
1126
1127         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1128 }
1129
1130 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1131 {
1132         iwl_abort_notification_waits(&mvm->notif_wait);
1133
1134         /*
1135          * This is a bit racy, but worst case we tell mac80211 about
1136          * a stopped/aborted scan when that was already done which
1137          * is not a problem. It is necessary to abort any os scan
1138          * here because mac80211 requires having the scan cleared
1139          * before restarting.
1140          * We'll reset the scan_status to NONE in restart cleanup in
1141          * the next start() call from mac80211. If restart isn't called
1142          * (no fw restart) scan status will stay busy.
1143          */
1144         iwl_mvm_report_scan_aborted(mvm);
1145
1146         /*
1147          * If we're restarting already, don't cycle restarts.
1148          * If INIT fw asserted, it will likely fail again.
1149          * If WoWLAN fw asserted, don't restart either, mac80211
1150          * can't recover this since we're already half suspended.
1151          */
1152         if (!mvm->restart_fw && fw_error) {
1153                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1154                                             NULL);
1155         } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1156                                     &mvm->status)) {
1157                 struct iwl_mvm_reprobe *reprobe;
1158
1159                 IWL_ERR(mvm,
1160                         "Firmware error during reconfiguration - reprobe!\n");
1161
1162                 /*
1163                  * get a module reference to avoid doing this while unloading
1164                  * anyway and to avoid scheduling a work with code that's
1165                  * being removed.
1166                  */
1167                 if (!try_module_get(THIS_MODULE)) {
1168                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1169                         return;
1170                 }
1171
1172                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1173                 if (!reprobe) {
1174                         module_put(THIS_MODULE);
1175                         return;
1176                 }
1177                 reprobe->dev = mvm->trans->dev;
1178                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1179                 schedule_work(&reprobe->work);
1180         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1181                 /* don't let the transport/FW power down */
1182                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1183
1184                 if (fw_error && mvm->restart_fw > 0)
1185                         mvm->restart_fw--;
1186                 ieee80211_restart_hw(mvm->hw);
1187         }
1188 }
1189
1190 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1191 {
1192         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1193
1194         iwl_mvm_dump_nic_error_log(mvm);
1195
1196         iwl_mvm_nic_restart(mvm, true);
1197 }
1198
1199 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1200 {
1201         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1202
1203         WARN_ON(1);
1204         iwl_mvm_nic_restart(mvm, true);
1205 }
1206
1207 struct iwl_d0i3_iter_data {
1208         struct iwl_mvm *mvm;
1209         struct ieee80211_vif *connected_vif;
1210         u8 ap_sta_id;
1211         u8 vif_count;
1212         u8 offloading_tid;
1213         bool disable_offloading;
1214 };
1215
1216 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1217                                         struct ieee80211_vif *vif,
1218                                         struct iwl_d0i3_iter_data *iter_data)
1219 {
1220         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1221         struct iwl_mvm_sta *mvmsta;
1222         u32 available_tids = 0;
1223         u8 tid;
1224
1225         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1226                     mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1227                 return false;
1228
1229         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1230         if (!mvmsta)
1231                 return false;
1232
1233         spin_lock_bh(&mvmsta->lock);
1234         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1235                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1236
1237                 /*
1238                  * in case of pending tx packets, don't use this tid
1239                  * for offloading in order to prevent reuse of the same
1240                  * qos seq counters.
1241                  */
1242                 if (iwl_mvm_tid_queued(tid_data))
1243                         continue;
1244
1245                 if (tid_data->state != IWL_AGG_OFF)
1246                         continue;
1247
1248                 available_tids |= BIT(tid);
1249         }
1250         spin_unlock_bh(&mvmsta->lock);
1251
1252         /*
1253          * disallow protocol offloading if we have no available tid
1254          * (with no pending frames and no active aggregation,
1255          * as we don't handle "holes" properly - the scheduler needs the
1256          * frame's seq number and TFD index to match)
1257          */
1258         if (!available_tids)
1259                 return true;
1260
1261         /* for simplicity, just use the first available tid */
1262         iter_data->offloading_tid = ffs(available_tids) - 1;
1263         return false;
1264 }
1265
1266 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1267                                         struct ieee80211_vif *vif)
1268 {
1269         struct iwl_d0i3_iter_data *data = _data;
1270         struct iwl_mvm *mvm = data->mvm;
1271         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1272         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1273
1274         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1275         if (vif->type != NL80211_IFTYPE_STATION ||
1276             !vif->bss_conf.assoc)
1277                 return;
1278
1279         /*
1280          * in case of pending tx packets or active aggregations,
1281          * avoid offloading features in order to prevent reuse of
1282          * the same qos seq counters.
1283          */
1284         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1285                 data->disable_offloading = true;
1286
1287         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1288         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1289                                    false, flags);
1290
1291         /*
1292          * on init/association, mvm already configures POWER_TABLE_CMD
1293          * and REPLY_MCAST_FILTER_CMD, so currently don't
1294          * reconfigure them (we might want to use different
1295          * params later on, though).
1296          */
1297         data->ap_sta_id = mvmvif->ap_sta_id;
1298         data->vif_count++;
1299
1300         /*
1301          * no new commands can be sent at this stage, so it's safe
1302          * to save the vif pointer during d0i3 entrance.
1303          */
1304         data->connected_vif = vif;
1305 }
1306
1307 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1308                                     struct iwl_wowlan_config_cmd *cmd,
1309                                     struct iwl_d0i3_iter_data *iter_data)
1310 {
1311         struct ieee80211_sta *ap_sta;
1312         struct iwl_mvm_sta *mvm_ap_sta;
1313
1314         if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1315                 return;
1316
1317         rcu_read_lock();
1318
1319         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1320         if (IS_ERR_OR_NULL(ap_sta))
1321                 goto out;
1322
1323         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1324         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1325         cmd->offloading_tid = iter_data->offloading_tid;
1326         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1327                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1328         /*
1329          * The d0i3 uCode takes care of the nonqos counters,
1330          * so configure only the qos seq ones.
1331          */
1332         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1333 out:
1334         rcu_read_unlock();
1335 }
1336
1337 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1338 {
1339         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1340         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1341         int ret;
1342         struct iwl_d0i3_iter_data d0i3_iter_data = {
1343                 .mvm = mvm,
1344         };
1345         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1346                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1347                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1348                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1349         };
1350         struct iwl_d3_manager_config d3_cfg_cmd = {
1351                 .min_sleep_time = cpu_to_le32(1000),
1352                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1353         };
1354
1355         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1356
1357         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1358                 return -EINVAL;
1359
1360         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1361
1362         /*
1363          * iwl_mvm_ref_sync takes a reference before checking the flag.
1364          * so by checking there is no held reference we prevent a state
1365          * in which iwl_mvm_ref_sync continues successfully while we
1366          * configure the firmware to enter d0i3
1367          */
1368         if (iwl_mvm_ref_taken(mvm)) {
1369                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1370                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1371                 wake_up(&mvm->d0i3_exit_waitq);
1372                 return 1;
1373         }
1374
1375         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1376                                                    IEEE80211_IFACE_ITER_NORMAL,
1377                                                    iwl_mvm_enter_d0i3_iterator,
1378                                                    &d0i3_iter_data);
1379         if (d0i3_iter_data.vif_count == 1) {
1380                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1381                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1382         } else {
1383                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1384                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1385                 mvm->d0i3_offloading = false;
1386         }
1387
1388         /* make sure we have no running tx while configuring the seqno */
1389         synchronize_net();
1390
1391         /* Flush the hw queues, in case something got queued during entry */
1392         ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1393         if (ret)
1394                 return ret;
1395
1396         /* configure wowlan configuration only if needed */
1397         if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1398                 /* wake on beacons only if beacon storing isn't supported */
1399                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1400                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1401                         wowlan_config_cmd.wakeup_filter |=
1402                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1403
1404                 iwl_mvm_wowlan_config_key_params(mvm,
1405                                                  d0i3_iter_data.connected_vif,
1406                                                  true, flags);
1407
1408                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1409                                         &d0i3_iter_data);
1410
1411                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1412                                            sizeof(wowlan_config_cmd),
1413                                            &wowlan_config_cmd);
1414                 if (ret)
1415                         return ret;
1416         }
1417
1418         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1419                                     flags | CMD_MAKE_TRANS_IDLE,
1420                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1421 }
1422
1423 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1424                                        struct ieee80211_vif *vif)
1425 {
1426         struct iwl_mvm *mvm = _data;
1427         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1428
1429         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1430         if (vif->type != NL80211_IFTYPE_STATION ||
1431             !vif->bss_conf.assoc)
1432                 return;
1433
1434         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1435 }
1436
1437 struct iwl_mvm_d0i3_exit_work_iter_data {
1438         struct iwl_mvm *mvm;
1439         struct iwl_wowlan_status *status;
1440         u32 wakeup_reasons;
1441 };
1442
1443 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1444                                         struct ieee80211_vif *vif)
1445 {
1446         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1447         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1448         u32 reasons = data->wakeup_reasons;
1449
1450         /* consider only the relevant station interface */
1451         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1452             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1453                 return;
1454
1455         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1456                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1457         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1458                 ieee80211_beacon_loss(vif);
1459         else
1460                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1461 }
1462
1463 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1464 {
1465         struct ieee80211_sta *sta = NULL;
1466         struct iwl_mvm_sta *mvm_ap_sta;
1467         int i;
1468         bool wake_queues = false;
1469
1470         lockdep_assert_held(&mvm->mutex);
1471
1472         spin_lock_bh(&mvm->d0i3_tx_lock);
1473
1474         if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1475                 goto out;
1476
1477         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1478
1479         /* get the sta in order to update seq numbers and re-enqueue skbs */
1480         sta = rcu_dereference_protected(
1481                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1482                         lockdep_is_held(&mvm->mutex));
1483
1484         if (IS_ERR_OR_NULL(sta)) {
1485                 sta = NULL;
1486                 goto out;
1487         }
1488
1489         if (mvm->d0i3_offloading && qos_seq) {
1490                 /* update qos seq numbers if offloading was enabled */
1491                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1492                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1493                         u16 seq = le16_to_cpu(qos_seq[i]);
1494                         /* firmware stores last-used one, we store next one */
1495                         seq += 0x10;
1496                         mvm_ap_sta->tid_data[i].seq_number = seq;
1497                 }
1498         }
1499 out:
1500         /* re-enqueue (or drop) all packets */
1501         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1502                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1503
1504                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1505                         ieee80211_free_txskb(mvm->hw, skb);
1506
1507                 /* if the skb_queue is not empty, we need to wake queues */
1508                 wake_queues = true;
1509         }
1510         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1511         wake_up(&mvm->d0i3_exit_waitq);
1512         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1513         if (wake_queues)
1514                 ieee80211_wake_queues(mvm->hw);
1515
1516         spin_unlock_bh(&mvm->d0i3_tx_lock);
1517 }
1518
1519 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1520 {
1521         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1522         struct iwl_host_cmd get_status_cmd = {
1523                 .id = WOWLAN_GET_STATUSES,
1524                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1525         };
1526         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1527                 .mvm = mvm,
1528         };
1529
1530         struct iwl_wowlan_status *status;
1531         int ret;
1532         u32 wakeup_reasons = 0;
1533         __le16 *qos_seq = NULL;
1534
1535         mutex_lock(&mvm->mutex);
1536         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1537         if (ret)
1538                 goto out;
1539
1540         if (!get_status_cmd.resp_pkt)
1541                 goto out;
1542
1543         status = (void *)get_status_cmd.resp_pkt->data;
1544         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1545         qos_seq = status->qos_seq_ctr;
1546
1547         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1548
1549         iter_data.wakeup_reasons = wakeup_reasons;
1550         iter_data.status = status;
1551         ieee80211_iterate_active_interfaces(mvm->hw,
1552                                             IEEE80211_IFACE_ITER_NORMAL,
1553                                             iwl_mvm_d0i3_exit_work_iter,
1554                                             &iter_data);
1555 out:
1556         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1557
1558         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1559                        wakeup_reasons);
1560
1561         /* qos_seq might point inside resp_pkt, so free it only now */
1562         if (get_status_cmd.resp_pkt)
1563                 iwl_free_resp(&get_status_cmd);
1564
1565         /* the FW might have updated the regdomain */
1566         iwl_mvm_update_changed_regdom(mvm);
1567
1568         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1569         mutex_unlock(&mvm->mutex);
1570 }
1571
1572 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1573 {
1574         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1575                     CMD_WAKE_UP_TRANS;
1576         int ret;
1577
1578         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1579
1580         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1581                 return -EINVAL;
1582
1583         mutex_lock(&mvm->d0i3_suspend_mutex);
1584         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1585                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1586                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1587                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1588                 return 0;
1589         }
1590         mutex_unlock(&mvm->d0i3_suspend_mutex);
1591
1592         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1593         if (ret)
1594                 goto out;
1595
1596         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1597                                                    IEEE80211_IFACE_ITER_NORMAL,
1598                                                    iwl_mvm_exit_d0i3_iterator,
1599                                                    mvm);
1600 out:
1601         schedule_work(&mvm->d0i3_exit_work);
1602         return ret;
1603 }
1604
1605 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1606 {
1607         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1608
1609         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1610         return _iwl_mvm_exit_d0i3(mvm);
1611 }
1612
1613 #define IWL_MVM_COMMON_OPS                                      \
1614         /* these could be differentiated */                     \
1615         .async_cb = iwl_mvm_async_cb,                           \
1616         .queue_full = iwl_mvm_stop_sw_queue,                    \
1617         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1618         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1619         .free_skb = iwl_mvm_free_skb,                           \
1620         .nic_error = iwl_mvm_nic_error,                         \
1621         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1622         .nic_config = iwl_mvm_nic_config,                       \
1623         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1624         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1625         /* as we only register one, these MUST be common! */    \
1626         .start = iwl_op_mode_mvm_start,                         \
1627         .stop = iwl_op_mode_mvm_stop
1628
1629 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1630         IWL_MVM_COMMON_OPS,
1631         .rx = iwl_mvm_rx,
1632 };
1633
1634 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1635                               struct napi_struct *napi,
1636                               struct iwl_rx_cmd_buffer *rxb,
1637                               unsigned int queue)
1638 {
1639         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1640         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1641
1642         if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1643                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1644         else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
1645                           pkt->hdr.group_id == DATA_PATH_GROUP))
1646                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1647         else
1648                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1649 }
1650
1651 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1652         IWL_MVM_COMMON_OPS,
1653         .rx = iwl_mvm_rx_mq,
1654         .rx_rss = iwl_mvm_rx_mq_rss,
1655 };