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  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
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  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
  28  *
  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  38  * All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  *
  44  *  * Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  *  * Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in
  48  *    the documentation and/or other materials provided with the
  49  *    distribution.
  50  *  * Neither the name Intel Corporation nor the names of its
  51  *    contributors may be used to endorse or promote products derived
  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67 #include <linux/module.h>
  68 #include <linux/vmalloc.h>
  69 #include <net/mac80211.h>
  70
  71 #include "fw/notif-wait.h"
  72 #include "iwl-trans.h"
  73 #include "iwl-op-mode.h"
  74 #include "fw/img.h"
  75 #include "iwl-debug.h"
  76 #include "iwl-drv.h"
  77 #include "iwl-modparams.h"
  78 #include "mvm.h"
  79 #include "iwl-phy-db.h"
  80 #include "iwl-eeprom-parse.h"
  81 #include "iwl-csr.h"
  82 #include "iwl-io.h"
  83 #include "iwl-prph.h"
  84 #include "rs.h"
  85 #include "fw/api/scan.h"
  86 #include "time-event.h"
  87 #include "fw-api.h"
  88 #include "fw/api/scan.h"
  89 #include "fw/acpi.h"
  90
  91 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  92 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  93 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  94 MODULE_LICENSE("GPL");
  95
  96 static const struct iwl_op_mode_ops iwl_mvm_ops;
  97 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  98
  99 struct iwl_mvm_mod_params iwlmvm_mod_params = {
 100         .power_scheme = IWL_POWER_SCHEME_BPS,
 101         .tfd_q_hang_detect = true
 102         /* rest of fields are 0 by default */
 103 };
 104
 105 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
 106 MODULE_PARM_DESC(init_dbg,
 107                  "set to true to debug an ASSERT in INIT fw (default: false");
 108 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
 109 MODULE_PARM_DESC(power_scheme,
 110                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 111 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 112                    bool, S_IRUGO);
 113 MODULE_PARM_DESC(tfd_q_hang_detect,
 114                  "TFD queues hang detection (default: true");
 115
 116 /*
 117  * module init and exit functions
 118  */
 119 static int __init iwl_mvm_init(void)
 120 {
 121         int ret;
 122
 123         ret = iwl_mvm_rate_control_register();
 124         if (ret) {
 125                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 126                 return ret;
 127         }
 128
 129         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 130
 131         if (ret) {
 132                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 133                 iwl_mvm_rate_control_unregister();
 134         }
 135
 136         return ret;
 137 }
 138 module_init(iwl_mvm_init);
 139
 140 static void __exit iwl_mvm_exit(void)
 141 {
 142         iwl_opmode_deregister("iwlmvm");
 143         iwl_mvm_rate_control_unregister();
 144 }
 145 module_exit(iwl_mvm_exit);
 146
 147 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 148 {
 149         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 150         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 151         u32 reg_val = 0;
 152         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 153
 154         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 155                          FW_PHY_CFG_RADIO_TYPE_POS;
 156         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 157                          FW_PHY_CFG_RADIO_STEP_POS;
 158         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 159                          FW_PHY_CFG_RADIO_DASH_POS;
 160
 161         /* SKU control */
 162         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 163                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 164         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 165                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 166
 167         /* radio configuration */
 168         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 169         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 170         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 171
 172         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 173                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 174
 175         /*
 176          * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
 177          * sampling, and shouldn't be set to any non-zero value.
 178          * The same is supposed to be true of the other HW, but unsetting
 179          * them (such as the 7260) causes automatic tests to fail on seemingly
 180          * unrelated errors. Need to further investigate this, but for now
 181          * we'll separate cases.
 182          */
 183         if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 184                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 185
 186         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 187                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 190                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 191                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 192                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 193                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 194                                 reg_val);
 195
 196         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 197                        radio_cfg_step, radio_cfg_dash);
 198
 199         /*
 200          * W/A : NIC is stuck in a reset state after Early PCIe power off
 201          * (PCIe power is lost before PERST# is asserted), causing ME FW
 202          * to lose ownership and not being able to obtain it back.
 203          */
 204         if (!mvm->trans->cfg->apmg_not_supported)
 205                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 206                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 207                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 208 }
 209
 210 /**
 211  * enum iwl_rx_handler_context context for Rx handler
 212  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 213  *      which can't acquire mvm->mutex.
 214  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 215  *      (and only in this case!), it should be set as ASYNC. In that case,
 216  *      it will be called from a worker with mvm->mutex held.
 217  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 218  *      mutex itself, it will be called from a worker without mvm->mutex held.
 219  */
 220 enum iwl_rx_handler_context {
 221         RX_HANDLER_SYNC,
 222         RX_HANDLER_ASYNC_LOCKED,
 223         RX_HANDLER_ASYNC_UNLOCKED,
 224 };
 225
 226 /**
 227  * struct iwl_rx_handlers handler for FW notification
 228  * @cmd_id: command id
 229  * @context: see &iwl_rx_handler_context
 230  * @fn: the function is called when notification is received
 231  */
 232 struct iwl_rx_handlers {
 233         u16 cmd_id;
 234         enum iwl_rx_handler_context context;
 235         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 236 };
 237
 238 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 239         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 240 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 241         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 242
 243 /*
 244  * Handlers for fw notifications
 245  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 246  * This list should be in order of frequency for performance purposes.
 247  *
 248  * The handler can be one from three contexts, see &iwl_rx_handler_context
 249  */
 250 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 251         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 252         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 253
 254         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 255                    RX_HANDLER_ASYNC_LOCKED),
 256         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 257                    RX_HANDLER_ASYNC_LOCKED),
 258         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 259                    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(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
 306                        iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
 307         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 308                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 309         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 310                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 311         RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
 312                        iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
 313 };
 314 #undef RX_HANDLER
 315 #undef RX_HANDLER_GRP
 316
 317 /* Please keep this array *SORTED* by hex value.
 318  * Access is done through binary search
 319  */
 320 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 321         HCMD_NAME(MVM_ALIVE),
 322         HCMD_NAME(REPLY_ERROR),
 323         HCMD_NAME(ECHO_CMD),
 324         HCMD_NAME(INIT_COMPLETE_NOTIF),
 325         HCMD_NAME(PHY_CONTEXT_CMD),
 326         HCMD_NAME(DBG_CFG),
 327         HCMD_NAME(SCAN_CFG_CMD),
 328         HCMD_NAME(SCAN_REQ_UMAC),
 329         HCMD_NAME(SCAN_ABORT_UMAC),
 330         HCMD_NAME(SCAN_COMPLETE_UMAC),
 331         HCMD_NAME(TOF_CMD),
 332         HCMD_NAME(TOF_NOTIFICATION),
 333         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 334         HCMD_NAME(ADD_STA_KEY),
 335         HCMD_NAME(ADD_STA),
 336         HCMD_NAME(REMOVE_STA),
 337         HCMD_NAME(FW_GET_ITEM_CMD),
 338         HCMD_NAME(TX_CMD),
 339         HCMD_NAME(SCD_QUEUE_CFG),
 340         HCMD_NAME(TXPATH_FLUSH),
 341         HCMD_NAME(MGMT_MCAST_KEY),
 342         HCMD_NAME(WEP_KEY),
 343         HCMD_NAME(SHARED_MEM_CFG),
 344         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 345         HCMD_NAME(MAC_CONTEXT_CMD),
 346         HCMD_NAME(TIME_EVENT_CMD),
 347         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 348         HCMD_NAME(BINDING_CONTEXT_CMD),
 349         HCMD_NAME(TIME_QUOTA_CMD),
 350         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 351         HCMD_NAME(LEDS_CMD),
 352         HCMD_NAME(LQ_CMD),
 353         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 354         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 355         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 356         HCMD_NAME(HOT_SPOT_CMD),
 357         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 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(PHY_DB_CMD),
 363         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 364         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_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(BEACON_NOTIFICATION),
 371         HCMD_NAME(BEACON_TEMPLATE_CMD),
 372         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 373         HCMD_NAME(BT_CONFIG),
 374         HCMD_NAME(STATISTICS_CMD),
 375         HCMD_NAME(STATISTICS_NOTIFICATION),
 376         HCMD_NAME(EOSP_NOTIFICATION),
 377         HCMD_NAME(REDUCE_TX_POWER_CMD),
 378         HCMD_NAME(CARD_STATE_NOTIFICATION),
 379         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 380         HCMD_NAME(TDLS_CONFIG_CMD),
 381         HCMD_NAME(MAC_PM_POWER_TABLE),
 382         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 383         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 384         HCMD_NAME(RSS_CONFIG_CMD),
 385         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 386         HCMD_NAME(REPLY_RX_PHY_CMD),
 387         HCMD_NAME(REPLY_RX_MPDU_CMD),
 388         HCMD_NAME(FRAME_RELEASE),
 389         HCMD_NAME(BA_NOTIF),
 390         HCMD_NAME(MCC_UPDATE_CMD),
 391         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 392         HCMD_NAME(MARKER_CMD),
 393         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 394         HCMD_NAME(BCAST_FILTER_CMD),
 395         HCMD_NAME(MCAST_FILTER_CMD),
 396         HCMD_NAME(REPLY_SF_CFG_CMD),
 397         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 398         HCMD_NAME(D3_CONFIG_CMD),
 399         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 400         HCMD_NAME(OFFLOADS_QUERY_CMD),
 401         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 402         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 403         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 404         HCMD_NAME(WOWLAN_PATTERNS),
 405         HCMD_NAME(WOWLAN_CONFIGURATION),
 406         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 407         HCMD_NAME(WOWLAN_TKIP_PARAM),
 408         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 409         HCMD_NAME(WOWLAN_GET_STATUSES),
 410         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 411         HCMD_NAME(D0I3_END_CMD),
 412         HCMD_NAME(LTR_CONFIG),
 413 };
 414
 415 /* Please keep this array *SORTED* by hex value.
 416  * Access is done through binary search
 417  */
 418 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 419         HCMD_NAME(SHARED_MEM_CFG_CMD),
 420         HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 421 };
 422
 423 /* Please keep this array *SORTED* by hex value.
 424  * Access is done through binary search
 425  */
 426 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 427         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 428 };
 429
 430 /* Please keep this array *SORTED* by hex value.
 431  * Access is done through binary search
 432  */
 433 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 434         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 435         HCMD_NAME(CTDP_CONFIG_CMD),
 436         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 437         HCMD_NAME(GEO_TX_POWER_LIMIT),
 438         HCMD_NAME(CT_KILL_NOTIFICATION),
 439         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 440 };
 441
 442 /* Please keep this array *SORTED* by hex value.
 443  * Access is done through binary search
 444  */
 445 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 446         HCMD_NAME(DQA_ENABLE_CMD),
 447         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 448         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 449         HCMD_NAME(STA_PM_NOTIF),
 450         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 451         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 452 };
 453
 454 /* Please keep this array *SORTED* by hex value.
 455  * Access is done through binary search
 456  */
 457 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
 458         HCMD_NAME(MFU_ASSERT_DUMP_NTF),
 459 };
 460
 461 /* Please keep this array *SORTED* by hex value.
 462  * Access is done through binary search
 463  */
 464 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 465         HCMD_NAME(STORED_BEACON_NTF),
 466 };
 467
 468 /* Please keep this array *SORTED* by hex value.
 469  * Access is done through binary search
 470  */
 471 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 472         HCMD_NAME(NVM_ACCESS_COMPLETE),
 473         HCMD_NAME(NVM_GET_INFO),
 474 };
 475
 476 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 477         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 478         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 479         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 480         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 481         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 482         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 483         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 484         [REGULATORY_AND_NVM_GROUP] =
 485                 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 486 };
 487
 488 /* this forward declaration can avoid to export the function */
 489 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 490 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 491
 492 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
 493 {
 494         const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
 495         u64 dflt_pwr_limit;
 496
 497         if (!backoff)
 498                 return 0;
 499
 500         dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
 501
 502         while (backoff->pwr) {
 503                 if (dflt_pwr_limit >= backoff->pwr)
 504                         return backoff->backoff;
 505
 506                 backoff++;
 507         }
 508
 509         return 0;
 510 }
 511
 512 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 513 {
 514         struct iwl_mvm *mvm =
 515                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 516         struct ieee80211_vif *tx_blocked_vif;
 517         struct iwl_mvm_vif *mvmvif;
 518
 519         mutex_lock(&mvm->mutex);
 520
 521         tx_blocked_vif =
 522                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 523                                           lockdep_is_held(&mvm->mutex));
 524
 525         if (!tx_blocked_vif)
 526                 goto unlock;
 527
 528         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 529         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 530         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 531 unlock:
 532         mutex_unlock(&mvm->mutex);
 533 }
 534
 535 static int iwl_mvm_fwrt_dump_start(void *ctx)
 536 {
 537         struct iwl_mvm *mvm = ctx;
 538         int ret;
 539
 540         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 541         if (ret)
 542                 return ret;
 543
 544         mutex_lock(&mvm->mutex);
 545
 546         return 0;
 547 }
 548
 549 static void iwl_mvm_fwrt_dump_end(void *ctx)
 550 {
 551         struct iwl_mvm *mvm = ctx;
 552
 553         mutex_unlock(&mvm->mutex);
 554
 555         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 556 }
 557
 558 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
 559         .dump_start = iwl_mvm_fwrt_dump_start,
 560         .dump_end = iwl_mvm_fwrt_dump_end,
 561 };
 562
 563 static struct iwl_op_mode *
 564 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 565                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 566 {
 567         struct ieee80211_hw *hw;
 568         struct iwl_op_mode *op_mode;
 569         struct iwl_mvm *mvm;
 570         struct iwl_trans_config trans_cfg = {};
 571         static const u8 no_reclaim_cmds[] = {
 572                 TX_CMD,
 573         };
 574         int err, scan_size;
 575         u32 min_backoff;
 576
 577         /*
 578          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 579          * index all over the driver - check that its value corresponds to the
 580          * array size.
 581          */
 582         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 583
 584         /********************************
 585          * 1. Allocating and configuring HW data
 586          ********************************/
 587         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 588                                 sizeof(struct iwl_mvm),
 589                                 &iwl_mvm_hw_ops);
 590         if (!hw)
 591                 return NULL;
 592
 593         if (cfg->max_rx_agg_size)
 594                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 595
 596         if (cfg->max_tx_agg_size)
 597                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 598
 599         op_mode = hw->priv;
 600
 601         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 602         mvm->dev = trans->dev;
 603         mvm->trans = trans;
 604         mvm->cfg = cfg;
 605         mvm->fw = fw;
 606         mvm->hw = hw;
 607
 608         iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm);
 609
 610         mvm->init_status = 0;
 611
 612         if (iwl_mvm_has_new_rx_api(mvm)) {
 613                 op_mode->ops = &iwl_mvm_ops_mq;
 614                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 615         } else {
 616                 op_mode->ops = &iwl_mvm_ops;
 617                 trans->rx_mpdu_cmd_hdr_size =
 618                         sizeof(struct iwl_rx_mpdu_res_start);
 619
 620                 if (WARN_ON(trans->num_rx_queues > 1))
 621                         goto out_free;
 622         }
 623
 624         mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 625
 626         mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 627         mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
 628         mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 629         mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 630
 631         mvm->sf_state = SF_UNINIT;
 632         if (iwl_mvm_has_unified_ucode(mvm))
 633                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
 634         else
 635                 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
 636         mvm->drop_bcn_ap_mode = true;
 637
 638         mutex_init(&mvm->mutex);
 639         mutex_init(&mvm->d0i3_suspend_mutex);
 640         spin_lock_init(&mvm->async_handlers_lock);
 641         INIT_LIST_HEAD(&mvm->time_event_list);
 642         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 643         INIT_LIST_HEAD(&mvm->async_handlers_list);
 644         spin_lock_init(&mvm->time_event_lock);
 645         spin_lock_init(&mvm->queue_info_lock);
 646
 647         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 648         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 649         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 650         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 651         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 652         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 653
 654         spin_lock_init(&mvm->d0i3_tx_lock);
 655         spin_lock_init(&mvm->refs_lock);
 656         skb_queue_head_init(&mvm->d0i3_tx);
 657         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 658         init_waitqueue_head(&mvm->rx_sync_waitq);
 659
 660         atomic_set(&mvm->queue_sync_counter, 0);
 661
 662         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 663
 664         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 665
 666         /*
 667          * Populate the state variables that the transport layer needs
 668          * to know about.
 669          */
 670         trans_cfg.op_mode = op_mode;
 671         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 672         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 673         switch (iwlwifi_mod_params.amsdu_size) {
 674         case IWL_AMSDU_DEF:
 675         case IWL_AMSDU_4K:
 676                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 677                 break;
 678         case IWL_AMSDU_8K:
 679                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 680                 break;
 681         case IWL_AMSDU_12K:
 682                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 683                 break;
 684         default:
 685                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 686                        iwlwifi_mod_params.amsdu_size);
 687                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 688         }
 689
 690         /* the hardware splits the A-MSDU */
 691         if (mvm->cfg->mq_rx_supported)
 692                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 693
 694         trans->wide_cmd_header = true;
 695         trans_cfg.bc_table_dword = true;
 696
 697         trans_cfg.command_groups = iwl_mvm_groups;
 698         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 699
 700         trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 701         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 702         trans_cfg.scd_set_active = true;
 703
 704         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 705                                           driver_data[2]);
 706
 707         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 708
 709         /* Set a short watchdog for the command queue */
 710         trans_cfg.cmd_q_wdg_timeout =
 711                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 712
 713         snprintf(mvm->hw->wiphy->fw_version,
 714                  sizeof(mvm->hw->wiphy->fw_version),
 715                  "%s", fw->fw_version);
 716
 717         /* Configure transport layer */
 718         iwl_trans_configure(mvm->trans, &trans_cfg);
 719
 720         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 721         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 722         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 723         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 724                sizeof(trans->dbg_conf_tlv));
 725         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 726
 727         /* set up notification wait support */
 728         iwl_notification_wait_init(&mvm->notif_wait);
 729
 730         /* Init phy db */
 731         mvm->phy_db = iwl_phy_db_init(trans);
 732         if (!mvm->phy_db) {
 733                 IWL_ERR(mvm, "Cannot init phy_db\n");
 734                 goto out_free;
 735         }
 736
 737         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 738                  mvm->cfg->name, mvm->trans->hw_rev);
 739
 740         if (iwlwifi_mod_params.nvm_file)
 741                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 742         else
 743                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 744                                  "working without external nvm file\n");
 745
 746         err = iwl_trans_start_hw(mvm->trans);
 747         if (err)
 748                 goto out_free;
 749
 750         mutex_lock(&mvm->mutex);
 751         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 752         err = iwl_run_init_mvm_ucode(mvm, true);
 753         if (!iwlmvm_mod_params.init_dbg)
 754                 iwl_mvm_stop_device(mvm);
 755         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 756         mutex_unlock(&mvm->mutex);
 757         if (err < 0) {
 758                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 759                 goto out_free;
 760         }
 761
 762         scan_size = iwl_mvm_scan_size(mvm);
 763
 764         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 765         if (!mvm->scan_cmd)
 766                 goto out_free;
 767
 768         /* Set EBS as successful as long as not stated otherwise by the FW. */
 769         mvm->last_ebs_successful = true;
 770
 771         err = iwl_mvm_mac_setup_register(mvm);
 772         if (err)
 773                 goto out_free;
 774         mvm->hw_registered = true;
 775
 776         min_backoff = iwl_mvm_min_backoff(mvm);
 777         iwl_mvm_thermal_initialize(mvm, min_backoff);
 778
 779         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 780         if (err)
 781                 goto out_unregister;
 782
 783         if (!iwl_mvm_has_new_rx_stats_api(mvm))
 784                 memset(&mvm->rx_stats_v3, 0,
 785                        sizeof(struct mvm_statistics_rx_v3));
 786         else
 787                 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 788
 789         /* The transport always starts with a taken reference, we can
 790          * release it now if d0i3 is supported */
 791         if (iwl_mvm_is_d0i3_supported(mvm))
 792                 iwl_trans_unref(mvm->trans);
 793
 794         iwl_mvm_tof_init(mvm);
 795
 796         return op_mode;
 797
 798  out_unregister:
 799         if (iwlmvm_mod_params.init_dbg)
 800                 return op_mode;
 801
 802         ieee80211_unregister_hw(mvm->hw);
 803         mvm->hw_registered = false;
 804         iwl_mvm_leds_exit(mvm);
 805         iwl_mvm_thermal_exit(mvm);
 806  out_free:
 807         iwl_fw_flush_dump(&mvm->fwrt);
 808
 809         if (iwlmvm_mod_params.init_dbg)
 810                 return op_mode;
 811         iwl_phy_db_free(mvm->phy_db);
 812         kfree(mvm->scan_cmd);
 813         iwl_trans_op_mode_leave(trans);
 814
 815         ieee80211_free_hw(mvm->hw);
 816         return NULL;
 817 }
 818
 819 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 820 {
 821         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 822         int i;
 823
 824         /* If d0i3 is supported, we have released the reference that
 825          * the transport started with, so we should take it back now
 826          * that we are leaving.
 827          */
 828         if (iwl_mvm_is_d0i3_supported(mvm))
 829                 iwl_trans_ref(mvm->trans);
 830
 831         iwl_mvm_leds_exit(mvm);
 832
 833         iwl_mvm_thermal_exit(mvm);
 834
 835         if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
 836                 ieee80211_unregister_hw(mvm->hw);
 837                 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 838         }
 839
 840         kfree(mvm->scan_cmd);
 841         kfree(mvm->mcast_filter_cmd);
 842         mvm->mcast_filter_cmd = NULL;
 843
 844 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 845         kfree(mvm->d3_resume_sram);
 846 #endif
 847
 848         iwl_trans_op_mode_leave(mvm->trans);
 849
 850         iwl_phy_db_free(mvm->phy_db);
 851         mvm->phy_db = NULL;
 852
 853         kfree(mvm->nvm_data);
 854         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 855                 kfree(mvm->nvm_sections[i].data);
 856
 857         iwl_mvm_tof_clean(mvm);
 858
 859         mutex_destroy(&mvm->mutex);
 860         mutex_destroy(&mvm->d0i3_suspend_mutex);
 861
 862         ieee80211_free_hw(mvm->hw);
 863 }
 864
 865 struct iwl_async_handler_entry {
 866         struct list_head list;
 867         struct iwl_rx_cmd_buffer rxb;
 868         enum iwl_rx_handler_context context;
 869         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 870 };
 871
 872 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 873 {
 874         struct iwl_async_handler_entry *entry, *tmp;
 875
 876         spin_lock_bh(&mvm->async_handlers_lock);
 877         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 878                 iwl_free_rxb(&entry->rxb);
 879                 list_del(&entry->list);
 880                 kfree(entry);
 881         }
 882         spin_unlock_bh(&mvm->async_handlers_lock);
 883 }
 884
 885 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 886 {
 887         struct iwl_mvm *mvm =
 888                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 889         struct iwl_async_handler_entry *entry, *tmp;
 890         LIST_HEAD(local_list);
 891
 892         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 893
 894         /*
 895          * Sync with Rx path with a lock. Remove all the entries from this list,
 896          * add them to a local one (lock free), and then handle them.
 897          */
 898         spin_lock_bh(&mvm->async_handlers_lock);
 899         list_splice_init(&mvm->async_handlers_list, &local_list);
 900         spin_unlock_bh(&mvm->async_handlers_lock);
 901
 902         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 903                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 904                         mutex_lock(&mvm->mutex);
 905                 entry->fn(mvm, &entry->rxb);
 906                 iwl_free_rxb(&entry->rxb);
 907                 list_del(&entry->list);
 908                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 909                         mutex_unlock(&mvm->mutex);
 910                 kfree(entry);
 911         }
 912 }
 913
 914 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 915                                             struct iwl_rx_packet *pkt)
 916 {
 917         struct iwl_fw_dbg_trigger_tlv *trig;
 918         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 919         int i;
 920
 921         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 922                 return;
 923
 924         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 925         cmds_trig = (void *)trig->data;
 926
 927         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
 928                 return;
 929
 930         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 931                 /* don't collect on CMD 0 */
 932                 if (!cmds_trig->cmds[i].cmd_id)
 933                         break;
 934
 935                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 936                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 937                         continue;
 938
 939                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 940                                         "CMD 0x%02x.%02x received",
 941                                         pkt->hdr.group_id, pkt->hdr.cmd);
 942                 break;
 943         }
 944 }
 945
 946 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 947                               struct iwl_rx_cmd_buffer *rxb,
 948                               struct iwl_rx_packet *pkt)
 949 {
 950         int i;
 951
 952         iwl_mvm_rx_check_trigger(mvm, pkt);
 953
 954         /*
 955          * Do the notification wait before RX handlers so
 956          * even if the RX handler consumes the RXB we have
 957          * access to it in the notification wait entry.
 958          */
 959         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 960
 961         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 962                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 963                 struct iwl_async_handler_entry *entry;
 964
 965                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 966                         continue;
 967
 968                 if (rx_h->context == RX_HANDLER_SYNC) {
 969                         rx_h->fn(mvm, rxb);
 970                         return;
 971                 }
 972
 973                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 974                 /* we can't do much... */
 975                 if (!entry)
 976                         return;
 977
 978                 entry->rxb._page = rxb_steal_page(rxb);
 979                 entry->rxb._offset = rxb->_offset;
 980                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 981                 entry->fn = rx_h->fn;
 982                 entry->context = rx_h->context;
 983                 spin_lock(&mvm->async_handlers_lock);
 984                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 985                 spin_unlock(&mvm->async_handlers_lock);
 986                 schedule_work(&mvm->async_handlers_wk);
 987                 return;
 988         }
 989
 990         iwl_fwrt_handle_notification(&mvm->fwrt, rxb);
 991 }
 992
 993 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 994                        struct napi_struct *napi,
 995                        struct iwl_rx_cmd_buffer *rxb)
 996 {
 997         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 998         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 999         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1000
1001         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1002                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1003         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1004                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1005         else
1006                 iwl_mvm_rx_common(mvm, rxb, pkt);
1007 }
1008
1009 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1010                           struct napi_struct *napi,
1011                           struct iwl_rx_cmd_buffer *rxb)
1012 {
1013         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1014         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1015         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1016
1017         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1018                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1019         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1020                                          RX_QUEUES_NOTIFICATION)))
1021                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1022         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1023                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1024         else
1025                 iwl_mvm_rx_common(mvm, rxb, pkt);
1026 }
1027
1028 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1029 {
1030         int q;
1031
1032         if (WARN_ON_ONCE(!mq))
1033                 return;
1034
1035         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1036                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1037                         IWL_DEBUG_TX_QUEUES(mvm,
1038                                             "mac80211 %d already stopped\n", q);
1039                         continue;
1040                 }
1041
1042                 ieee80211_stop_queue(mvm->hw, q);
1043         }
1044 }
1045
1046 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1047                              const struct iwl_device_cmd *cmd)
1048 {
1049         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1050
1051         /*
1052          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1053          * commands that need to block the Tx queues.
1054          */
1055         iwl_trans_block_txq_ptrs(mvm->trans, false);
1056 }
1057
1058 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1059 {
1060         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1061         unsigned long mq;
1062
1063         spin_lock_bh(&mvm->queue_info_lock);
1064         mq = mvm->hw_queue_to_mac80211[hw_queue];
1065         spin_unlock_bh(&mvm->queue_info_lock);
1066
1067         iwl_mvm_stop_mac_queues(mvm, mq);
1068 }
1069
1070 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1071 {
1072         int q;
1073
1074         if (WARN_ON_ONCE(!mq))
1075                 return;
1076
1077         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1078                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1079                         IWL_DEBUG_TX_QUEUES(mvm,
1080                                             "mac80211 %d still stopped\n", q);
1081                         continue;
1082                 }
1083
1084                 ieee80211_wake_queue(mvm->hw, q);
1085         }
1086 }
1087
1088 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1089 {
1090         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1091         unsigned long mq;
1092
1093         spin_lock_bh(&mvm->queue_info_lock);
1094         mq = mvm->hw_queue_to_mac80211[hw_queue];
1095         spin_unlock_bh(&mvm->queue_info_lock);
1096
1097         iwl_mvm_start_mac_queues(mvm, mq);
1098 }
1099
1100 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1101 {
1102         bool state = iwl_mvm_is_radio_killed(mvm);
1103
1104         if (state)
1105                 wake_up(&mvm->rx_sync_waitq);
1106
1107         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1108 }
1109
1110 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1111 {
1112         if (state)
1113                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1114         else
1115                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1116
1117         iwl_mvm_set_rfkill_state(mvm);
1118 }
1119
1120 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1121 {
1122         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1123         bool calibrating = READ_ONCE(mvm->calibrating);
1124
1125         if (state)
1126                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1127         else
1128                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1129
1130         iwl_mvm_set_rfkill_state(mvm);
1131
1132         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1133         if (calibrating)
1134                 iwl_abort_notification_waits(&mvm->notif_wait);
1135
1136         /*
1137          * Stop the device if we run OPERATIONAL firmware or if we are in the
1138          * middle of the calibrations.
1139          */
1140         return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1141 }
1142
1143 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1144 {
1145         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1146         struct ieee80211_tx_info *info;
1147
1148         info = IEEE80211_SKB_CB(skb);
1149         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1150         ieee80211_free_txskb(mvm->hw, skb);
1151 }
1152
1153 struct iwl_mvm_reprobe {
1154         struct device *dev;
1155         struct work_struct work;
1156 };
1157
1158 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1159 {
1160         struct iwl_mvm_reprobe *reprobe;
1161
1162         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1163         if (device_reprobe(reprobe->dev))
1164                 dev_err(reprobe->dev, "reprobe failed!\n");
1165         kfree(reprobe);
1166         module_put(THIS_MODULE);
1167 }
1168
1169 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1170 {
1171         iwl_abort_notification_waits(&mvm->notif_wait);
1172
1173         /*
1174          * This is a bit racy, but worst case we tell mac80211 about
1175          * a stopped/aborted scan when that was already done which
1176          * is not a problem. It is necessary to abort any os scan
1177          * here because mac80211 requires having the scan cleared
1178          * before restarting.
1179          * We'll reset the scan_status to NONE in restart cleanup in
1180          * the next start() call from mac80211. If restart isn't called
1181          * (no fw restart) scan status will stay busy.
1182          */
1183         iwl_mvm_report_scan_aborted(mvm);
1184
1185         /*
1186          * If we're restarting already, don't cycle restarts.
1187          * If INIT fw asserted, it will likely fail again.
1188          * If WoWLAN fw asserted, don't restart either, mac80211
1189          * can't recover this since we're already half suspended.
1190          */
1191         if (!mvm->fw_restart && fw_error) {
1192                 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1193                                         NULL);
1194         } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1195                 struct iwl_mvm_reprobe *reprobe;
1196
1197                 IWL_ERR(mvm,
1198                         "Firmware error during reconfiguration - reprobe!\n");
1199
1200                 /*
1201                  * get a module reference to avoid doing this while unloading
1202                  * anyway and to avoid scheduling a work with code that's
1203                  * being removed.
1204                  */
1205                 if (!try_module_get(THIS_MODULE)) {
1206                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1207                         return;
1208                 }
1209
1210                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1211                 if (!reprobe) {
1212                         module_put(THIS_MODULE);
1213                         return;
1214                 }
1215                 reprobe->dev = mvm->trans->dev;
1216                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1217                 schedule_work(&reprobe->work);
1218         } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1219                    mvm->hw_registered) {
1220                 /* don't let the transport/FW power down */
1221                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1222
1223                 if (fw_error && mvm->fw_restart > 0)
1224                         mvm->fw_restart--;
1225                 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1226                 ieee80211_restart_hw(mvm->hw);
1227         }
1228 }
1229
1230 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1231 {
1232         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1233
1234         iwl_mvm_dump_nic_error_log(mvm);
1235
1236         iwl_mvm_nic_restart(mvm, true);
1237 }
1238
1239 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1240 {
1241         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1242
1243         WARN_ON(1);
1244         iwl_mvm_nic_restart(mvm, true);
1245 }
1246
1247 struct iwl_d0i3_iter_data {
1248         struct iwl_mvm *mvm;
1249         struct ieee80211_vif *connected_vif;
1250         u8 ap_sta_id;
1251         u8 vif_count;
1252         u8 offloading_tid;
1253         bool disable_offloading;
1254 };
1255
1256 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1257                                         struct ieee80211_vif *vif,
1258                                         struct iwl_d0i3_iter_data *iter_data)
1259 {
1260         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1261         struct iwl_mvm_sta *mvmsta;
1262         u32 available_tids = 0;
1263         u8 tid;
1264
1265         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1266                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1267                 return false;
1268
1269         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1270         if (!mvmsta)
1271                 return false;
1272
1273         spin_lock_bh(&mvmsta->lock);
1274         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1275                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1276
1277                 /*
1278                  * in case of pending tx packets, don't use this tid
1279                  * for offloading in order to prevent reuse of the same
1280                  * qos seq counters.
1281                  */
1282                 if (iwl_mvm_tid_queued(mvm, tid_data))
1283                         continue;
1284
1285                 if (tid_data->state != IWL_AGG_OFF)
1286                         continue;
1287
1288                 available_tids |= BIT(tid);
1289         }
1290         spin_unlock_bh(&mvmsta->lock);
1291
1292         /*
1293          * disallow protocol offloading if we have no available tid
1294          * (with no pending frames and no active aggregation,
1295          * as we don't handle "holes" properly - the scheduler needs the
1296          * frame's seq number and TFD index to match)
1297          */
1298         if (!available_tids)
1299                 return true;
1300
1301         /* for simplicity, just use the first available tid */
1302         iter_data->offloading_tid = ffs(available_tids) - 1;
1303         return false;
1304 }
1305
1306 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1307                                         struct ieee80211_vif *vif)
1308 {
1309         struct iwl_d0i3_iter_data *data = _data;
1310         struct iwl_mvm *mvm = data->mvm;
1311         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1312         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1313
1314         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1315         if (vif->type != NL80211_IFTYPE_STATION ||
1316             !vif->bss_conf.assoc)
1317                 return;
1318
1319         /*
1320          * in case of pending tx packets or active aggregations,
1321          * avoid offloading features in order to prevent reuse of
1322          * the same qos seq counters.
1323          */
1324         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1325                 data->disable_offloading = true;
1326
1327         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1328         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1329                                    false, flags);
1330
1331         /*
1332          * on init/association, mvm already configures POWER_TABLE_CMD
1333          * and REPLY_MCAST_FILTER_CMD, so currently don't
1334          * reconfigure them (we might want to use different
1335          * params later on, though).
1336          */
1337         data->ap_sta_id = mvmvif->ap_sta_id;
1338         data->vif_count++;
1339
1340         /*
1341          * no new commands can be sent at this stage, so it's safe
1342          * to save the vif pointer during d0i3 entrance.
1343          */
1344         data->connected_vif = vif;
1345 }
1346
1347 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1348                                     struct iwl_wowlan_config_cmd *cmd,
1349                                     struct iwl_d0i3_iter_data *iter_data)
1350 {
1351         struct ieee80211_sta *ap_sta;
1352         struct iwl_mvm_sta *mvm_ap_sta;
1353
1354         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1355                 return;
1356
1357         rcu_read_lock();
1358
1359         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1360         if (IS_ERR_OR_NULL(ap_sta))
1361                 goto out;
1362
1363         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1364         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1365         cmd->offloading_tid = iter_data->offloading_tid;
1366         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1367                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1368         /*
1369          * The d0i3 uCode takes care of the nonqos counters,
1370          * so configure only the qos seq ones.
1371          */
1372         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1373 out:
1374         rcu_read_unlock();
1375 }
1376
1377 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1378 {
1379         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1380         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1381         int ret;
1382         struct iwl_d0i3_iter_data d0i3_iter_data = {
1383                 .mvm = mvm,
1384         };
1385         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1386                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1387                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1388                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1389         };
1390         struct iwl_d3_manager_config d3_cfg_cmd = {
1391                 .min_sleep_time = cpu_to_le32(1000),
1392                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1393         };
1394
1395         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1396
1397         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1398                 return -EINVAL;
1399
1400         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1401
1402         /*
1403          * iwl_mvm_ref_sync takes a reference before checking the flag.
1404          * so by checking there is no held reference we prevent a state
1405          * in which iwl_mvm_ref_sync continues successfully while we
1406          * configure the firmware to enter d0i3
1407          */
1408         if (iwl_mvm_ref_taken(mvm)) {
1409                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1410                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1411                 wake_up(&mvm->d0i3_exit_waitq);
1412                 return 1;
1413         }
1414
1415         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1416                                                    IEEE80211_IFACE_ITER_NORMAL,
1417                                                    iwl_mvm_enter_d0i3_iterator,
1418                                                    &d0i3_iter_data);
1419         if (d0i3_iter_data.vif_count == 1) {
1420                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1421                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1422         } else {
1423                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1424                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1425                 mvm->d0i3_offloading = false;
1426         }
1427
1428         /* make sure we have no running tx while configuring the seqno */
1429         synchronize_net();
1430
1431         /* Flush the hw queues, in case something got queued during entry */
1432         /* TODO new tx api */
1433         if (iwl_mvm_has_new_tx_api(mvm)) {
1434                 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1435         } else {
1436                 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1437                                             flags);
1438                 if (ret)
1439                         return ret;
1440         }
1441
1442         /* configure wowlan configuration only if needed */
1443         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1444                 /* wake on beacons only if beacon storing isn't supported */
1445                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1446                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1447                         wowlan_config_cmd.wakeup_filter |=
1448                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1449
1450                 iwl_mvm_wowlan_config_key_params(mvm,
1451                                                  d0i3_iter_data.connected_vif,
1452                                                  true, flags);
1453
1454                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1455                                         &d0i3_iter_data);
1456
1457                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1458                                            sizeof(wowlan_config_cmd),
1459                                            &wowlan_config_cmd);
1460                 if (ret)
1461                         return ret;
1462         }
1463
1464         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1465                                     flags | CMD_MAKE_TRANS_IDLE,
1466                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1467 }
1468
1469 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1470                                        struct ieee80211_vif *vif)
1471 {
1472         struct iwl_mvm *mvm = _data;
1473         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1474
1475         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1476         if (vif->type != NL80211_IFTYPE_STATION ||
1477             !vif->bss_conf.assoc)
1478                 return;
1479
1480         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1481 }
1482
1483 struct iwl_mvm_d0i3_exit_work_iter_data {
1484         struct iwl_mvm *mvm;
1485         struct iwl_wowlan_status *status;
1486         u32 wakeup_reasons;
1487 };
1488
1489 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1490                                         struct ieee80211_vif *vif)
1491 {
1492         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1493         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1494         u32 reasons = data->wakeup_reasons;
1495
1496         /* consider only the relevant station interface */
1497         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1498             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1499                 return;
1500
1501         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1502                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1503         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1504                 ieee80211_beacon_loss(vif);
1505         else
1506                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1507 }
1508
1509 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1510 {
1511         struct ieee80211_sta *sta = NULL;
1512         struct iwl_mvm_sta *mvm_ap_sta;
1513         int i;
1514         bool wake_queues = false;
1515
1516         lockdep_assert_held(&mvm->mutex);
1517
1518         spin_lock_bh(&mvm->d0i3_tx_lock);
1519
1520         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1521                 goto out;
1522
1523         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1524
1525         /* get the sta in order to update seq numbers and re-enqueue skbs */
1526         sta = rcu_dereference_protected(
1527                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1528                         lockdep_is_held(&mvm->mutex));
1529
1530         if (IS_ERR_OR_NULL(sta)) {
1531                 sta = NULL;
1532                 goto out;
1533         }
1534
1535         if (mvm->d0i3_offloading && qos_seq) {
1536                 /* update qos seq numbers if offloading was enabled */
1537                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1538                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1539                         u16 seq = le16_to_cpu(qos_seq[i]);
1540                         /* firmware stores last-used one, we store next one */
1541                         seq += 0x10;
1542                         mvm_ap_sta->tid_data[i].seq_number = seq;
1543                 }
1544         }
1545 out:
1546         /* re-enqueue (or drop) all packets */
1547         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1548                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1549
1550                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1551                         ieee80211_free_txskb(mvm->hw, skb);
1552
1553                 /* if the skb_queue is not empty, we need to wake queues */
1554                 wake_queues = true;
1555         }
1556         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1557         wake_up(&mvm->d0i3_exit_waitq);
1558         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1559         if (wake_queues)
1560                 ieee80211_wake_queues(mvm->hw);
1561
1562         spin_unlock_bh(&mvm->d0i3_tx_lock);
1563 }
1564
1565 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1566 {
1567         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1568         struct iwl_host_cmd get_status_cmd = {
1569                 .id = WOWLAN_GET_STATUSES,
1570                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1571         };
1572         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1573                 .mvm = mvm,
1574         };
1575
1576         struct iwl_wowlan_status *status;
1577         int ret;
1578         u32 wakeup_reasons = 0;
1579         __le16 *qos_seq = NULL;
1580
1581         mutex_lock(&mvm->mutex);
1582         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1583         if (ret)
1584                 goto out;
1585
1586         status = (void *)get_status_cmd.resp_pkt->data;
1587         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1588         qos_seq = status->qos_seq_ctr;
1589
1590         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1591
1592         iter_data.wakeup_reasons = wakeup_reasons;
1593         iter_data.status = status;
1594         ieee80211_iterate_active_interfaces(mvm->hw,
1595                                             IEEE80211_IFACE_ITER_NORMAL,
1596                                             iwl_mvm_d0i3_exit_work_iter,
1597                                             &iter_data);
1598 out:
1599         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1600
1601         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1602                        wakeup_reasons);
1603
1604         /* qos_seq might point inside resp_pkt, so free it only now */
1605         if (get_status_cmd.resp_pkt)
1606                 iwl_free_resp(&get_status_cmd);
1607
1608         /* the FW might have updated the regdomain */
1609         iwl_mvm_update_changed_regdom(mvm);
1610
1611         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1612         mutex_unlock(&mvm->mutex);
1613 }
1614
1615 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1616 {
1617         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1618                     CMD_WAKE_UP_TRANS;
1619         int ret;
1620
1621         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1622
1623         if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1624                 return -EINVAL;
1625
1626         mutex_lock(&mvm->d0i3_suspend_mutex);
1627         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1628                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1629                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1630                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1631                 return 0;
1632         }
1633         mutex_unlock(&mvm->d0i3_suspend_mutex);
1634
1635         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1636         if (ret)
1637                 goto out;
1638
1639         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1640                                                    IEEE80211_IFACE_ITER_NORMAL,
1641                                                    iwl_mvm_exit_d0i3_iterator,
1642                                                    mvm);
1643 out:
1644         schedule_work(&mvm->d0i3_exit_work);
1645         return ret;
1646 }
1647
1648 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1649 {
1650         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1651
1652         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1653         return _iwl_mvm_exit_d0i3(mvm);
1654 }
1655
1656 #define IWL_MVM_COMMON_OPS                                      \
1657         /* these could be differentiated */                     \
1658         .async_cb = iwl_mvm_async_cb,                           \
1659         .queue_full = iwl_mvm_stop_sw_queue,                    \
1660         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1661         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1662         .free_skb = iwl_mvm_free_skb,                           \
1663         .nic_error = iwl_mvm_nic_error,                         \
1664         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1665         .nic_config = iwl_mvm_nic_config,                       \
1666         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1667         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1668         /* as we only register one, these MUST be common! */    \
1669         .start = iwl_op_mode_mvm_start,                         \
1670         .stop = iwl_op_mode_mvm_stop
1671
1672 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1673         IWL_MVM_COMMON_OPS,
1674         .rx = iwl_mvm_rx,
1675 };
1676
1677 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1678                               struct napi_struct *napi,
1679                               struct iwl_rx_cmd_buffer *rxb,
1680                               unsigned int queue)
1681 {
1682         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1683         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1684         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1685
1686         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1687                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1688         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1689                                          RX_QUEUES_NOTIFICATION)))
1690                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1691         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1692                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1693 }
1694
1695 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1696         IWL_MVM_COMMON_OPS,
1697         .rx = iwl_mvm_rx_mq,
1698         .rx_rss = iwl_mvm_rx_mq_rss,
1699 };