drivers/net/wireless/intel/iwlwifi/mvm/ops.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
  24  *
  25  * The full GNU General Public License is included in this distribution
  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <linuxwifi@intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  36  * Copyright(c) 2016 Intel Deutschland GmbH
  37  * All rights reserved.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  *
  43  *  * Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  *  * Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in
  47  *    the documentation and/or other materials provided with the
  48  *    distribution.
  49  *  * Neither the name Intel Corporation nor the names of its
  50  *    contributors may be used to endorse or promote products derived
  51  *    from this software without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  54  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  55  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  56  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  57  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  58  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  59  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  60  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  61  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  63  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  64  *
  65  *****************************************************************************/
  66 #include <linux/module.h>
  67 #include <linux/vmalloc.h>
  68 #include <net/mac80211.h>
  69
  70 #include "iwl-notif-wait.h"
  71 #include "iwl-trans.h"
  72 #include "iwl-op-mode.h"
  73 #include "iwl-fw.h"
  74 #include "iwl-debug.h"
  75 #include "iwl-drv.h"
  76 #include "iwl-modparams.h"
  77 #include "mvm.h"
  78 #include "iwl-phy-db.h"
  79 #include "iwl-eeprom-parse.h"
  80 #include "iwl-csr.h"
  81 #include "iwl-io.h"
  82 #include "iwl-prph.h"
  83 #include "rs.h"
  84 #include "fw-api-scan.h"
  85 #include "time-event.h"
  86 #include "fw-dbg.h"
  87 #include "fw-api.h"
  88 #include "fw-api-scan.h"
  89
  90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  91 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  93 MODULE_LICENSE("GPL");
  94
  95 static const struct iwl_op_mode_ops iwl_mvm_ops;
  96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  97
  98 struct iwl_mvm_mod_params iwlmvm_mod_params = {
  99         .power_scheme = IWL_POWER_SCHEME_BPS,
 100         .tfd_q_hang_detect = true
 101         /* rest of fields are 0 by default */
 102 };
 103
 104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
 105 MODULE_PARM_DESC(init_dbg,
 106                  "set to true to debug an ASSERT in INIT fw (default: false");
 107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
 108 MODULE_PARM_DESC(power_scheme,
 109                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 111                    bool, S_IRUGO);
 112 MODULE_PARM_DESC(tfd_q_hang_detect,
 113                  "TFD queues hang detection (default: true");
 114
 115 /*
 116  * module init and exit functions
 117  */
 118 static int __init iwl_mvm_init(void)
 119 {
 120         int ret;
 121
 122         ret = iwl_mvm_rate_control_register();
 123         if (ret) {
 124                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 125                 return ret;
 126         }
 127
 128         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 129
 130         if (ret) {
 131                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 132                 iwl_mvm_rate_control_unregister();
 133         }
 134
 135         return ret;
 136 }
 137 module_init(iwl_mvm_init);
 138
 139 static void __exit iwl_mvm_exit(void)
 140 {
 141         iwl_opmode_deregister("iwlmvm");
 142         iwl_mvm_rate_control_unregister();
 143 }
 144 module_exit(iwl_mvm_exit);
 145
 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 147 {
 148         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 149         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 150         u32 reg_val = 0;
 151         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 152
 153         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 154                          FW_PHY_CFG_RADIO_TYPE_POS;
 155         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 156                          FW_PHY_CFG_RADIO_STEP_POS;
 157         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 158                          FW_PHY_CFG_RADIO_DASH_POS;
 159
 160         /* SKU control */
 161         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 162                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 163         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 164                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 165
 166         /* radio configuration */
 167         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 168         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 169         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 170
 171         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 172                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 173
 174         /*
 175          * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
 176          * shouldn't be set to any non-zero value. The same is supposed to be
 177          * true of the other HW, but unsetting them (such as the 7260) causes
 178          * automatic tests to fail on seemingly unrelated errors. Need to
 179          * further investigate this, but for now we'll separate cases.
 180          */
 181         if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
 182                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 183
 184         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 185                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 186                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 187                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 190                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 191                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 192                                 reg_val);
 193
 194         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 195                        radio_cfg_step, radio_cfg_dash);
 196
 197         /*
 198          * W/A : NIC is stuck in a reset state after Early PCIe power off
 199          * (PCIe power is lost before PERST# is asserted), causing ME FW
 200          * to lose ownership and not being able to obtain it back.
 201          */
 202         if (!mvm->trans->cfg->apmg_not_supported)
 203                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 204                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 205                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 206 }
 207
 208 /**
 209  * enum iwl_rx_handler_context context for Rx handler
 210  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 211  *      which can't acquire mvm->mutex.
 212  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 213  *      (and only in this case!), it should be set as ASYNC. In that case,
 214  *      it will be called from a worker with mvm->mutex held.
 215  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 216  *      mutex itself, it will be called from a worker without mvm->mutex held.
 217  */
 218 enum iwl_rx_handler_context {
 219         RX_HANDLER_SYNC,
 220         RX_HANDLER_ASYNC_LOCKED,
 221         RX_HANDLER_ASYNC_UNLOCKED,
 222 };
 223
 224 /**
 225  * struct iwl_rx_handlers handler for FW notification
 226  * @cmd_id: command id
 227  * @context: see &iwl_rx_handler_context
 228  * @fn: the function is called when notification is received
 229  */
 230 struct iwl_rx_handlers {
 231         u16 cmd_id;
 232         enum iwl_rx_handler_context context;
 233         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 234 };
 235
 236 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 237         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 239         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 240
 241 /*
 242  * Handlers for fw notifications
 243  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 244  * This list should be in order of frequency for performance purposes.
 245  *
 246  * The handler can be one from three contexts, see &iwl_rx_handler_context
 247  */
 248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 249         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 250         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 251
 252         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 253                    RX_HANDLER_ASYNC_LOCKED),
 254         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 255                    RX_HANDLER_ASYNC_LOCKED),
 256         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 257                    RX_HANDLER_ASYNC_LOCKED),
 258         RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
 259                    iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED),
 260
 261         RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 262                    iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 263
 264         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 265                    RX_HANDLER_SYNC),
 266         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 267                    RX_HANDLER_ASYNC_LOCKED),
 268
 269         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 270
 271         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 272                    iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 273         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 274                    iwl_mvm_rx_lmac_scan_complete_notif,
 275                    RX_HANDLER_ASYNC_LOCKED),
 276         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 277                    RX_HANDLER_SYNC),
 278         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 279                    RX_HANDLER_ASYNC_LOCKED),
 280         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 281                    iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 282
 283         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 284                    RX_HANDLER_SYNC),
 285
 286         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 287                    RX_HANDLER_SYNC),
 288
 289         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 290         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 291                    iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 292         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 293                    RX_HANDLER_ASYNC_LOCKED),
 294         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 295                        iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 296         RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 297                        iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 298
 299         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 300                    RX_HANDLER_ASYNC_LOCKED),
 301         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 302                    RX_HANDLER_SYNC),
 303         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 304                    RX_HANDLER_ASYNC_LOCKED),
 305         RX_HANDLER_GRP(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(ANTENNA_COUPLING_NOTIFICATION),
 328         HCMD_NAME(SCAN_CFG_CMD),
 329         HCMD_NAME(SCAN_REQ_UMAC),
 330         HCMD_NAME(SCAN_ABORT_UMAC),
 331         HCMD_NAME(SCAN_COMPLETE_UMAC),
 332         HCMD_NAME(TOF_CMD),
 333         HCMD_NAME(TOF_NOTIFICATION),
 334         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 335         HCMD_NAME(ADD_STA_KEY),
 336         HCMD_NAME(ADD_STA),
 337         HCMD_NAME(REMOVE_STA),
 338         HCMD_NAME(FW_GET_ITEM_CMD),
 339         HCMD_NAME(TX_CMD),
 340         HCMD_NAME(SCD_QUEUE_CFG),
 341         HCMD_NAME(TXPATH_FLUSH),
 342         HCMD_NAME(MGMT_MCAST_KEY),
 343         HCMD_NAME(WEP_KEY),
 344         HCMD_NAME(SHARED_MEM_CFG),
 345         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 346         HCMD_NAME(MAC_CONTEXT_CMD),
 347         HCMD_NAME(TIME_EVENT_CMD),
 348         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 349         HCMD_NAME(BINDING_CONTEXT_CMD),
 350         HCMD_NAME(TIME_QUOTA_CMD),
 351         HCMD_NAME(NON_QOS_TX_COUNTER_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(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
 359         HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
 360         HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
 361         HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
 362         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 363         HCMD_NAME(BT_COEX_CI),
 364         HCMD_NAME(PHY_CONFIGURATION_CMD),
 365         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 366         HCMD_NAME(PHY_DB_CMD),
 367         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 368         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 369         HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
 370         HCMD_NAME(POWER_TABLE_CMD),
 371         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 372         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 373         HCMD_NAME(DC2DC_CONFIG_CMD),
 374         HCMD_NAME(NVM_ACCESS_CMD),
 375         HCMD_NAME(SET_CALIB_DEFAULT_CMD),
 376         HCMD_NAME(BEACON_NOTIFICATION),
 377         HCMD_NAME(BEACON_TEMPLATE_CMD),
 378         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 379         HCMD_NAME(BT_CONFIG),
 380         HCMD_NAME(STATISTICS_CMD),
 381         HCMD_NAME(STATISTICS_NOTIFICATION),
 382         HCMD_NAME(EOSP_NOTIFICATION),
 383         HCMD_NAME(REDUCE_TX_POWER_CMD),
 384         HCMD_NAME(CARD_STATE_CMD),
 385         HCMD_NAME(CARD_STATE_NOTIFICATION),
 386         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 387         HCMD_NAME(TDLS_CONFIG_CMD),
 388         HCMD_NAME(MAC_PM_POWER_TABLE),
 389         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 390         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 391         HCMD_NAME(RSS_CONFIG_CMD),
 392         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 393         HCMD_NAME(REPLY_RX_PHY_CMD),
 394         HCMD_NAME(REPLY_RX_MPDU_CMD),
 395         HCMD_NAME(BA_NOTIF),
 396         HCMD_NAME(MCC_UPDATE_CMD),
 397         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 398         HCMD_NAME(MARKER_CMD),
 399         HCMD_NAME(BT_COEX_PRIO_TABLE),
 400         HCMD_NAME(BT_COEX_PROT_ENV),
 401         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 402         HCMD_NAME(BCAST_FILTER_CMD),
 403         HCMD_NAME(MCAST_FILTER_CMD),
 404         HCMD_NAME(REPLY_SF_CFG_CMD),
 405         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 406         HCMD_NAME(D3_CONFIG_CMD),
 407         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 408         HCMD_NAME(OFFLOADS_QUERY_CMD),
 409         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 410         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 411         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
 412         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 413         HCMD_NAME(WOWLAN_PATTERNS),
 414         HCMD_NAME(WOWLAN_CONFIGURATION),
 415         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 416         HCMD_NAME(WOWLAN_TKIP_PARAM),
 417         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 418         HCMD_NAME(WOWLAN_GET_STATUSES),
 419         HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
 420         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 421         HCMD_NAME(D0I3_END_CMD),
 422         HCMD_NAME(LTR_CONFIG),
 423         HCMD_NAME(REPLY_DEBUG_CMD),
 424 };
 425
 426 /* Please keep this array *SORTED* by hex value.
 427  * Access is done through binary search
 428  */
 429 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 430         HCMD_NAME(SHARED_MEM_CFG_CMD),
 431         HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 432 };
 433
 434 /* Please keep this array *SORTED* by hex value.
 435  * Access is done through binary search
 436  */
 437 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 438         HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
 439         HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
 440         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 441 };
 442
 443 /* Please keep this array *SORTED* by hex value.
 444  * Access is done through binary search
 445  */
 446 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 447         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 448         HCMD_NAME(CTDP_CONFIG_CMD),
 449         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 450         HCMD_NAME(GEO_TX_POWER_LIMIT),
 451         HCMD_NAME(CT_KILL_NOTIFICATION),
 452         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 453 };
 454
 455 /* Please keep this array *SORTED* by hex value.
 456  * Access is done through binary search
 457  */
 458 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 459         HCMD_NAME(DQA_ENABLE_CMD),
 460         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 461         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 462         HCMD_NAME(STA_PM_NOTIF),
 463         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 464         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 465 };
 466
 467 /* Please keep this array *SORTED* by hex value.
 468  * Access is done through binary search
 469  */
 470 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
 471         HCMD_NAME(MFU_ASSERT_DUMP_NTF),
 472 };
 473
 474 /* Please keep this array *SORTED* by hex value.
 475  * Access is done through binary search
 476  */
 477 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 478         HCMD_NAME(STORED_BEACON_NTF),
 479 };
 480
 481 /* Please keep this array *SORTED* by hex value.
 482  * Access is done through binary search
 483  */
 484 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 485         HCMD_NAME(NVM_ACCESS_COMPLETE),
 486 };
 487
 488 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 489         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 490         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 491         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 492         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 493         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 494         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 495         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 496         [REGULATORY_AND_NVM_GROUP] =
 497                 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 498 };
 499
 500 /* this forward declaration can avoid to export the function */
 501 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 502 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 503
 504 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
 505 {
 506         const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
 507
 508         if (!pwr_tx_backoff)
 509                 return 0;
 510
 511         while (pwr_tx_backoff->pwr) {
 512                 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
 513                         return pwr_tx_backoff->backoff;
 514
 515                 pwr_tx_backoff++;
 516         }
 517
 518         return 0;
 519 }
 520
 521 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
 522
 523 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 524 {
 525         struct iwl_mvm *mvm =
 526                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 527         struct ieee80211_vif *tx_blocked_vif;
 528         struct iwl_mvm_vif *mvmvif;
 529
 530         mutex_lock(&mvm->mutex);
 531
 532         tx_blocked_vif =
 533                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 534                                           lockdep_is_held(&mvm->mutex));
 535
 536         if (!tx_blocked_vif)
 537                 goto unlock;
 538
 539         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 540         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 541         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 542 unlock:
 543         mutex_unlock(&mvm->mutex);
 544 }
 545
 546 static struct iwl_op_mode *
 547 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 548                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 549 {
 550         struct ieee80211_hw *hw;
 551         struct iwl_op_mode *op_mode;
 552         struct iwl_mvm *mvm;
 553         struct iwl_trans_config trans_cfg = {};
 554         static const u8 no_reclaim_cmds[] = {
 555                 TX_CMD,
 556         };
 557         int err, scan_size;
 558         u32 min_backoff;
 559
 560         /*
 561          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 562          * index all over the driver - check that its value corresponds to the
 563          * array size.
 564          */
 565         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 566
 567         /********************************
 568          * 1. Allocating and configuring HW data
 569          ********************************/
 570         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 571                                 sizeof(struct iwl_mvm),
 572                                 &iwl_mvm_hw_ops);
 573         if (!hw)
 574                 return NULL;
 575
 576         if (cfg->max_rx_agg_size)
 577                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 578
 579         if (cfg->max_tx_agg_size)
 580                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 581
 582         op_mode = hw->priv;
 583
 584         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 585         mvm->dev = trans->dev;
 586         mvm->trans = trans;
 587         mvm->cfg = cfg;
 588         mvm->fw = fw;
 589         mvm->hw = hw;
 590
 591         if (iwl_mvm_has_new_rx_api(mvm)) {
 592                 op_mode->ops = &iwl_mvm_ops_mq;
 593                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 594         } else {
 595                 op_mode->ops = &iwl_mvm_ops;
 596                 trans->rx_mpdu_cmd_hdr_size =
 597                         sizeof(struct iwl_rx_mpdu_res_start);
 598
 599                 if (WARN_ON(trans->num_rx_queues > 1))
 600                         goto out_free;
 601         }
 602
 603         mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
 604
 605         if (!iwl_mvm_is_dqa_supported(mvm)) {
 606                 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
 607
 608                 if (mvm->cfg->base_params->num_of_queues == 16) {
 609                         mvm->aux_queue = 11;
 610                         mvm->first_agg_queue = 12;
 611                 } else {
 612                         mvm->aux_queue = 15;
 613                         mvm->first_agg_queue = 16;
 614                 }
 615         } else {
 616                 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 617                 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 618                 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 619                 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
 620                 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
 621         }
 622         mvm->sf_state = SF_UNINIT;
 623         if (iwl_mvm_has_new_tx_api(mvm))
 624                 mvm->cur_ucode = IWL_UCODE_REGULAR;
 625         else
 626                 mvm->cur_ucode = IWL_UCODE_INIT;
 627         mvm->drop_bcn_ap_mode = true;
 628
 629         mutex_init(&mvm->mutex);
 630         mutex_init(&mvm->d0i3_suspend_mutex);
 631         spin_lock_init(&mvm->async_handlers_lock);
 632         INIT_LIST_HEAD(&mvm->time_event_list);
 633         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 634         INIT_LIST_HEAD(&mvm->async_handlers_list);
 635         spin_lock_init(&mvm->time_event_lock);
 636         spin_lock_init(&mvm->queue_info_lock);
 637
 638         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 639         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 640         INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
 641         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 642         INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
 643         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 644         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 645         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 646
 647         spin_lock_init(&mvm->d0i3_tx_lock);
 648         spin_lock_init(&mvm->refs_lock);
 649         skb_queue_head_init(&mvm->d0i3_tx);
 650         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 651         init_waitqueue_head(&mvm->rx_sync_waitq);
 652
 653         atomic_set(&mvm->queue_sync_counter, 0);
 654
 655         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 656
 657         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 658
 659         /*
 660          * Populate the state variables that the transport layer needs
 661          * to know about.
 662          */
 663         trans_cfg.op_mode = op_mode;
 664         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 665         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 666         switch (iwlwifi_mod_params.amsdu_size) {
 667         case IWL_AMSDU_DEF:
 668         case IWL_AMSDU_4K:
 669                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 670                 break;
 671         case IWL_AMSDU_8K:
 672                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 673                 break;
 674         case IWL_AMSDU_12K:
 675                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 676                 break;
 677         default:
 678                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 679                        iwlwifi_mod_params.amsdu_size);
 680                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 681         }
 682
 683         /* the hardware splits the A-MSDU */
 684         if (mvm->cfg->mq_rx_supported)
 685                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 686
 687         trans->wide_cmd_header = true;
 688         trans_cfg.bc_table_dword = true;
 689
 690         trans_cfg.command_groups = iwl_mvm_groups;
 691         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 692
 693         if (iwl_mvm_is_dqa_supported(mvm))
 694                 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 695         else
 696                 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 697         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 698         trans_cfg.scd_set_active = true;
 699
 700         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 701                                           driver_data[2]);
 702
 703         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 704         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 705
 706         /* Set a short watchdog for the command queue */
 707         trans_cfg.cmd_q_wdg_timeout =
 708                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 709
 710         snprintf(mvm->hw->wiphy->fw_version,
 711                  sizeof(mvm->hw->wiphy->fw_version),
 712                  "%s", fw->fw_version);
 713
 714         /* Configure transport layer */
 715         iwl_trans_configure(mvm->trans, &trans_cfg);
 716
 717         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 718         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 719         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 720         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 721                sizeof(trans->dbg_conf_tlv));
 722         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 723
 724         /* set up notification wait support */
 725         iwl_notification_wait_init(&mvm->notif_wait);
 726
 727         /* Init phy db */
 728         mvm->phy_db = iwl_phy_db_init(trans);
 729         if (!mvm->phy_db) {
 730                 IWL_ERR(mvm, "Cannot init phy_db\n");
 731                 goto out_free;
 732         }
 733
 734         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 735                  mvm->cfg->name, mvm->trans->hw_rev);
 736
 737         if (iwlwifi_mod_params.nvm_file)
 738                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 739         else
 740                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 741                                  "working without external nvm file\n");
 742
 743         err = iwl_trans_start_hw(mvm->trans);
 744         if (err)
 745                 goto out_free;
 746
 747         mutex_lock(&mvm->mutex);
 748         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 749         err = iwl_run_init_mvm_ucode(mvm, true);
 750         if (!err || !iwlmvm_mod_params.init_dbg)
 751                 iwl_mvm_stop_device(mvm);
 752         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 753         mutex_unlock(&mvm->mutex);
 754         /* returns 0 if successful, 1 if success but in rfkill */
 755         if (err < 0 && !iwlmvm_mod_params.init_dbg) {
 756                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 757                 goto out_free;
 758         }
 759
 760         scan_size = iwl_mvm_scan_size(mvm);
 761
 762         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 763         if (!mvm->scan_cmd)
 764                 goto out_free;
 765
 766         /* Set EBS as successful as long as not stated otherwise by the FW. */
 767         mvm->last_ebs_successful = true;
 768
 769         err = iwl_mvm_mac_setup_register(mvm);
 770         if (err)
 771                 goto out_free;
 772         mvm->hw_registered = true;
 773
 774         min_backoff = calc_min_backoff(trans, cfg);
 775         iwl_mvm_thermal_initialize(mvm, min_backoff);
 776
 777         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 778         if (err)
 779                 goto out_unregister;
 780
 781         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 782
 783         /* The transport always starts with a taken reference, we can
 784          * release it now if d0i3 is supported */
 785         if (iwl_mvm_is_d0i3_supported(mvm))
 786                 iwl_trans_unref(mvm->trans);
 787
 788         iwl_mvm_tof_init(mvm);
 789
 790         return op_mode;
 791
 792  out_unregister:
 793         ieee80211_unregister_hw(mvm->hw);
 794         mvm->hw_registered = false;
 795         iwl_mvm_leds_exit(mvm);
 796         iwl_mvm_thermal_exit(mvm);
 797  out_free:
 798         flush_delayed_work(&mvm->fw_dump_wk);
 799         iwl_phy_db_free(mvm->phy_db);
 800         kfree(mvm->scan_cmd);
 801         iwl_trans_op_mode_leave(trans);
 802
 803         ieee80211_free_hw(mvm->hw);
 804         return NULL;
 805 }
 806
 807 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 808 {
 809         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 810         int i;
 811
 812         /* If d0i3 is supported, we have released the reference that
 813          * the transport started with, so we should take it back now
 814          * that we are leaving.
 815          */
 816         if (iwl_mvm_is_d0i3_supported(mvm))
 817                 iwl_trans_ref(mvm->trans);
 818
 819         iwl_mvm_leds_exit(mvm);
 820
 821         iwl_mvm_thermal_exit(mvm);
 822
 823         ieee80211_unregister_hw(mvm->hw);
 824
 825         kfree(mvm->scan_cmd);
 826         kfree(mvm->mcast_filter_cmd);
 827         mvm->mcast_filter_cmd = NULL;
 828
 829 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 830         kfree(mvm->d3_resume_sram);
 831 #endif
 832
 833         iwl_trans_op_mode_leave(mvm->trans);
 834
 835         iwl_phy_db_free(mvm->phy_db);
 836         mvm->phy_db = NULL;
 837
 838         iwl_free_nvm_data(mvm->nvm_data);
 839         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 840                 kfree(mvm->nvm_sections[i].data);
 841
 842         iwl_mvm_tof_clean(mvm);
 843
 844         mutex_destroy(&mvm->mutex);
 845         mutex_destroy(&mvm->d0i3_suspend_mutex);
 846
 847         ieee80211_free_hw(mvm->hw);
 848 }
 849
 850 struct iwl_async_handler_entry {
 851         struct list_head list;
 852         struct iwl_rx_cmd_buffer rxb;
 853         enum iwl_rx_handler_context context;
 854         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 855 };
 856
 857 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 858 {
 859         struct iwl_async_handler_entry *entry, *tmp;
 860
 861         spin_lock_bh(&mvm->async_handlers_lock);
 862         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 863                 iwl_free_rxb(&entry->rxb);
 864                 list_del(&entry->list);
 865                 kfree(entry);
 866         }
 867         spin_unlock_bh(&mvm->async_handlers_lock);
 868 }
 869
 870 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 871 {
 872         struct iwl_mvm *mvm =
 873                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 874         struct iwl_async_handler_entry *entry, *tmp;
 875         LIST_HEAD(local_list);
 876
 877         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 878
 879         /*
 880          * Sync with Rx path with a lock. Remove all the entries from this list,
 881          * add them to a local one (lock free), and then handle them.
 882          */
 883         spin_lock_bh(&mvm->async_handlers_lock);
 884         list_splice_init(&mvm->async_handlers_list, &local_list);
 885         spin_unlock_bh(&mvm->async_handlers_lock);
 886
 887         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 888                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 889                         mutex_lock(&mvm->mutex);
 890                 entry->fn(mvm, &entry->rxb);
 891                 iwl_free_rxb(&entry->rxb);
 892                 list_del(&entry->list);
 893                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 894                         mutex_unlock(&mvm->mutex);
 895                 kfree(entry);
 896         }
 897 }
 898
 899 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 900                                             struct iwl_rx_packet *pkt)
 901 {
 902         struct iwl_fw_dbg_trigger_tlv *trig;
 903         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 904         int i;
 905
 906         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 907                 return;
 908
 909         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 910         cmds_trig = (void *)trig->data;
 911
 912         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 913                 return;
 914
 915         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 916                 /* don't collect on CMD 0 */
 917                 if (!cmds_trig->cmds[i].cmd_id)
 918                         break;
 919
 920                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 921                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 922                         continue;
 923
 924                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 925                                             "CMD 0x%02x.%02x received",
 926                                             pkt->hdr.group_id, pkt->hdr.cmd);
 927                 break;
 928         }
 929 }
 930
 931 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 932                               struct iwl_rx_cmd_buffer *rxb,
 933                               struct iwl_rx_packet *pkt)
 934 {
 935         int i;
 936
 937         iwl_mvm_rx_check_trigger(mvm, pkt);
 938
 939         /*
 940          * Do the notification wait before RX handlers so
 941          * even if the RX handler consumes the RXB we have
 942          * access to it in the notification wait entry.
 943          */
 944         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 945
 946         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 947                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 948                 struct iwl_async_handler_entry *entry;
 949
 950                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 951                         continue;
 952
 953                 if (rx_h->context == RX_HANDLER_SYNC) {
 954                         rx_h->fn(mvm, rxb);
 955                         return;
 956                 }
 957
 958                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 959                 /* we can't do much... */
 960                 if (!entry)
 961                         return;
 962
 963                 entry->rxb._page = rxb_steal_page(rxb);
 964                 entry->rxb._offset = rxb->_offset;
 965                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 966                 entry->fn = rx_h->fn;
 967                 entry->context = rx_h->context;
 968                 spin_lock(&mvm->async_handlers_lock);
 969                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 970                 spin_unlock(&mvm->async_handlers_lock);
 971                 schedule_work(&mvm->async_handlers_wk);
 972                 break;
 973         }
 974 }
 975
 976 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 977                        struct napi_struct *napi,
 978                        struct iwl_rx_cmd_buffer *rxb)
 979 {
 980         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 981         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 982         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
 983
 984         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
 985                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 986         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
 987                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 988         else
 989                 iwl_mvm_rx_common(mvm, rxb, pkt);
 990 }
 991
 992 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
 993                           struct napi_struct *napi,
 994                           struct iwl_rx_cmd_buffer *rxb)
 995 {
 996         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 997         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 998         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
 999
1000         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1001                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1002         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1003                                          RX_QUEUES_NOTIFICATION)))
1004                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1005         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1006                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1007         else
1008                 iwl_mvm_rx_common(mvm, rxb, pkt);
1009 }
1010
1011 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1012 {
1013         int q;
1014
1015         if (WARN_ON_ONCE(!mq))
1016                 return;
1017
1018         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1019                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1020                         IWL_DEBUG_TX_QUEUES(mvm,
1021                                             "mac80211 %d already stopped\n", q);
1022                         continue;
1023                 }
1024
1025                 ieee80211_stop_queue(mvm->hw, q);
1026         }
1027 }
1028
1029 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1030                              const struct iwl_device_cmd *cmd)
1031 {
1032         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1033
1034         /*
1035          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1036          * commands that need to block the Tx queues.
1037          */
1038         iwl_trans_block_txq_ptrs(mvm->trans, false);
1039 }
1040
1041 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1042 {
1043         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1044         unsigned long mq;
1045
1046         spin_lock_bh(&mvm->queue_info_lock);
1047         mq = mvm->hw_queue_to_mac80211[hw_queue];
1048         spin_unlock_bh(&mvm->queue_info_lock);
1049
1050         iwl_mvm_stop_mac_queues(mvm, mq);
1051 }
1052
1053 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1054 {
1055         int q;
1056
1057         if (WARN_ON_ONCE(!mq))
1058                 return;
1059
1060         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1061                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1062                         IWL_DEBUG_TX_QUEUES(mvm,
1063                                             "mac80211 %d still stopped\n", q);
1064                         continue;
1065                 }
1066
1067                 ieee80211_wake_queue(mvm->hw, q);
1068         }
1069 }
1070
1071 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1072 {
1073         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1074         unsigned long mq;
1075
1076         spin_lock_bh(&mvm->queue_info_lock);
1077         mq = mvm->hw_queue_to_mac80211[hw_queue];
1078         spin_unlock_bh(&mvm->queue_info_lock);
1079
1080         iwl_mvm_start_mac_queues(mvm, mq);
1081 }
1082
1083 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1084 {
1085         if (state)
1086                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1087         else
1088                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1089
1090         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1091 }
1092
1093 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1094 {
1095         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1096         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1097
1098         if (state)
1099                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1100         else
1101                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1102
1103         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1104
1105         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1106         if (calibrating)
1107                 iwl_abort_notification_waits(&mvm->notif_wait);
1108
1109         /*
1110          * Stop the device if we run OPERATIONAL firmware or if we are in the
1111          * middle of the calibrations.
1112          */
1113         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1114 }
1115
1116 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1117 {
1118         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1119         struct ieee80211_tx_info *info;
1120
1121         info = IEEE80211_SKB_CB(skb);
1122         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1123         ieee80211_free_txskb(mvm->hw, skb);
1124 }
1125
1126 struct iwl_mvm_reprobe {
1127         struct device *dev;
1128         struct work_struct work;
1129 };
1130
1131 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1132 {
1133         struct iwl_mvm_reprobe *reprobe;
1134
1135         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1136         if (device_reprobe(reprobe->dev))
1137                 dev_err(reprobe->dev, "reprobe failed!\n");
1138         kfree(reprobe);
1139         module_put(THIS_MODULE);
1140 }
1141
1142 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1143 {
1144         struct iwl_mvm *mvm =
1145                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1146
1147         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1148                 return;
1149
1150         mutex_lock(&mvm->mutex);
1151
1152         /* stop recording */
1153         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1154                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1155         } else {
1156                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1157                 /* wait before we collect the data till the DBGC stop */
1158                 udelay(100);
1159         }
1160
1161         iwl_mvm_fw_error_dump(mvm);
1162
1163         /* start recording again if the firmware is not crashed */
1164         WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1165                      mvm->fw->dbg_dest_tlv &&
1166                      iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1167
1168         mutex_unlock(&mvm->mutex);
1169
1170         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1171 }
1172
1173 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1174 {
1175         iwl_abort_notification_waits(&mvm->notif_wait);
1176
1177         /*
1178          * This is a bit racy, but worst case we tell mac80211 about
1179          * a stopped/aborted scan when that was already done which
1180          * is not a problem. It is necessary to abort any os scan
1181          * here because mac80211 requires having the scan cleared
1182          * before restarting.
1183          * We'll reset the scan_status to NONE in restart cleanup in
1184          * the next start() call from mac80211. If restart isn't called
1185          * (no fw restart) scan status will stay busy.
1186          */
1187         iwl_mvm_report_scan_aborted(mvm);
1188
1189         /*
1190          * If we're restarting already, don't cycle restarts.
1191          * If INIT fw asserted, it will likely fail again.
1192          * If WoWLAN fw asserted, don't restart either, mac80211
1193          * can't recover this since we're already half suspended.
1194          */
1195         if (!mvm->restart_fw && fw_error) {
1196                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1197                                             NULL);
1198         } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1199                                     &mvm->status)) {
1200                 struct iwl_mvm_reprobe *reprobe;
1201
1202                 IWL_ERR(mvm,
1203                         "Firmware error during reconfiguration - reprobe!\n");
1204
1205                 /*
1206                  * get a module reference to avoid doing this while unloading
1207                  * anyway and to avoid scheduling a work with code that's
1208                  * being removed.
1209                  */
1210                 if (!try_module_get(THIS_MODULE)) {
1211                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1212                         return;
1213                 }
1214
1215                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1216                 if (!reprobe) {
1217                         module_put(THIS_MODULE);
1218                         return;
1219                 }
1220                 reprobe->dev = mvm->trans->dev;
1221                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1222                 schedule_work(&reprobe->work);
1223         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
1224                    mvm->hw_registered) {
1225                 /* don't let the transport/FW power down */
1226                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1227
1228                 if (fw_error && mvm->restart_fw > 0)
1229                         mvm->restart_fw--;
1230                 ieee80211_restart_hw(mvm->hw);
1231         }
1232 }
1233
1234 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1235 {
1236         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1237
1238         iwl_mvm_dump_nic_error_log(mvm);
1239
1240         iwl_mvm_nic_restart(mvm, true);
1241 }
1242
1243 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1244 {
1245         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1246
1247         WARN_ON(1);
1248         iwl_mvm_nic_restart(mvm, true);
1249 }
1250
1251 struct iwl_d0i3_iter_data {
1252         struct iwl_mvm *mvm;
1253         struct ieee80211_vif *connected_vif;
1254         u8 ap_sta_id;
1255         u8 vif_count;
1256         u8 offloading_tid;
1257         bool disable_offloading;
1258 };
1259
1260 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1261                                         struct ieee80211_vif *vif,
1262                                         struct iwl_d0i3_iter_data *iter_data)
1263 {
1264         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1265         struct iwl_mvm_sta *mvmsta;
1266         u32 available_tids = 0;
1267         u8 tid;
1268
1269         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1270                     mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1271                 return false;
1272
1273         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1274         if (!mvmsta)
1275                 return false;
1276
1277         spin_lock_bh(&mvmsta->lock);
1278         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1279                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1280
1281                 /*
1282                  * in case of pending tx packets, don't use this tid
1283                  * for offloading in order to prevent reuse of the same
1284                  * qos seq counters.
1285                  */
1286                 if (iwl_mvm_tid_queued(tid_data))
1287                         continue;
1288
1289                 if (tid_data->state != IWL_AGG_OFF)
1290                         continue;
1291
1292                 available_tids |= BIT(tid);
1293         }
1294         spin_unlock_bh(&mvmsta->lock);
1295
1296         /*
1297          * disallow protocol offloading if we have no available tid
1298          * (with no pending frames and no active aggregation,
1299          * as we don't handle "holes" properly - the scheduler needs the
1300          * frame's seq number and TFD index to match)
1301          */
1302         if (!available_tids)
1303                 return true;
1304
1305         /* for simplicity, just use the first available tid */
1306         iter_data->offloading_tid = ffs(available_tids) - 1;
1307         return false;
1308 }
1309
1310 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1311                                         struct ieee80211_vif *vif)
1312 {
1313         struct iwl_d0i3_iter_data *data = _data;
1314         struct iwl_mvm *mvm = data->mvm;
1315         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1316         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1317
1318         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1319         if (vif->type != NL80211_IFTYPE_STATION ||
1320             !vif->bss_conf.assoc)
1321                 return;
1322
1323         /*
1324          * in case of pending tx packets or active aggregations,
1325          * avoid offloading features in order to prevent reuse of
1326          * the same qos seq counters.
1327          */
1328         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1329                 data->disable_offloading = true;
1330
1331         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1332         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1333                                    false, flags);
1334
1335         /*
1336          * on init/association, mvm already configures POWER_TABLE_CMD
1337          * and REPLY_MCAST_FILTER_CMD, so currently don't
1338          * reconfigure them (we might want to use different
1339          * params later on, though).
1340          */
1341         data->ap_sta_id = mvmvif->ap_sta_id;
1342         data->vif_count++;
1343
1344         /*
1345          * no new commands can be sent at this stage, so it's safe
1346          * to save the vif pointer during d0i3 entrance.
1347          */
1348         data->connected_vif = vif;
1349 }
1350
1351 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1352                                     struct iwl_wowlan_config_cmd *cmd,
1353                                     struct iwl_d0i3_iter_data *iter_data)
1354 {
1355         struct ieee80211_sta *ap_sta;
1356         struct iwl_mvm_sta *mvm_ap_sta;
1357
1358         if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1359                 return;
1360
1361         rcu_read_lock();
1362
1363         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1364         if (IS_ERR_OR_NULL(ap_sta))
1365                 goto out;
1366
1367         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1368         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1369         cmd->offloading_tid = iter_data->offloading_tid;
1370         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1371                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1372         /*
1373          * The d0i3 uCode takes care of the nonqos counters,
1374          * so configure only the qos seq ones.
1375          */
1376         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1377 out:
1378         rcu_read_unlock();
1379 }
1380
1381 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1382 {
1383         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1384         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1385         int ret;
1386         struct iwl_d0i3_iter_data d0i3_iter_data = {
1387                 .mvm = mvm,
1388         };
1389         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1390                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1391                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1392                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1393         };
1394         struct iwl_d3_manager_config d3_cfg_cmd = {
1395                 .min_sleep_time = cpu_to_le32(1000),
1396                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1397         };
1398
1399         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1400
1401         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1402                 return -EINVAL;
1403
1404         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1405
1406         /*
1407          * iwl_mvm_ref_sync takes a reference before checking the flag.
1408          * so by checking there is no held reference we prevent a state
1409          * in which iwl_mvm_ref_sync continues successfully while we
1410          * configure the firmware to enter d0i3
1411          */
1412         if (iwl_mvm_ref_taken(mvm)) {
1413                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1414                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1415                 wake_up(&mvm->d0i3_exit_waitq);
1416                 return 1;
1417         }
1418
1419         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1420                                                    IEEE80211_IFACE_ITER_NORMAL,
1421                                                    iwl_mvm_enter_d0i3_iterator,
1422                                                    &d0i3_iter_data);
1423         if (d0i3_iter_data.vif_count == 1) {
1424                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1425                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1426         } else {
1427                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1428                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1429                 mvm->d0i3_offloading = false;
1430         }
1431
1432         /* make sure we have no running tx while configuring the seqno */
1433         synchronize_net();
1434
1435         /* Flush the hw queues, in case something got queued during entry */
1436         ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1437         if (ret)
1438                 return ret;
1439
1440         /* configure wowlan configuration only if needed */
1441         if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1442                 /* wake on beacons only if beacon storing isn't supported */
1443                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1444                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1445                         wowlan_config_cmd.wakeup_filter |=
1446                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1447
1448                 iwl_mvm_wowlan_config_key_params(mvm,
1449                                                  d0i3_iter_data.connected_vif,
1450                                                  true, flags);
1451
1452                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1453                                         &d0i3_iter_data);
1454
1455                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1456                                            sizeof(wowlan_config_cmd),
1457                                            &wowlan_config_cmd);
1458                 if (ret)
1459                         return ret;
1460         }
1461
1462         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1463                                     flags | CMD_MAKE_TRANS_IDLE,
1464                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1465 }
1466
1467 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1468                                        struct ieee80211_vif *vif)
1469 {
1470         struct iwl_mvm *mvm = _data;
1471         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1472
1473         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1474         if (vif->type != NL80211_IFTYPE_STATION ||
1475             !vif->bss_conf.assoc)
1476                 return;
1477
1478         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1479 }
1480
1481 struct iwl_mvm_d0i3_exit_work_iter_data {
1482         struct iwl_mvm *mvm;
1483         struct iwl_wowlan_status *status;
1484         u32 wakeup_reasons;
1485 };
1486
1487 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1488                                         struct ieee80211_vif *vif)
1489 {
1490         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1491         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1492         u32 reasons = data->wakeup_reasons;
1493
1494         /* consider only the relevant station interface */
1495         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1496             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1497                 return;
1498
1499         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1500                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1501         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1502                 ieee80211_beacon_loss(vif);
1503         else
1504                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1505 }
1506
1507 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1508 {
1509         struct ieee80211_sta *sta = NULL;
1510         struct iwl_mvm_sta *mvm_ap_sta;
1511         int i;
1512         bool wake_queues = false;
1513
1514         lockdep_assert_held(&mvm->mutex);
1515
1516         spin_lock_bh(&mvm->d0i3_tx_lock);
1517
1518         if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1519                 goto out;
1520
1521         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1522
1523         /* get the sta in order to update seq numbers and re-enqueue skbs */
1524         sta = rcu_dereference_protected(
1525                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1526                         lockdep_is_held(&mvm->mutex));
1527
1528         if (IS_ERR_OR_NULL(sta)) {
1529                 sta = NULL;
1530                 goto out;
1531         }
1532
1533         if (mvm->d0i3_offloading && qos_seq) {
1534                 /* update qos seq numbers if offloading was enabled */
1535                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1536                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1537                         u16 seq = le16_to_cpu(qos_seq[i]);
1538                         /* firmware stores last-used one, we store next one */
1539                         seq += 0x10;
1540                         mvm_ap_sta->tid_data[i].seq_number = seq;
1541                 }
1542         }
1543 out:
1544         /* re-enqueue (or drop) all packets */
1545         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1546                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1547
1548                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1549                         ieee80211_free_txskb(mvm->hw, skb);
1550
1551                 /* if the skb_queue is not empty, we need to wake queues */
1552                 wake_queues = true;
1553         }
1554         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1555         wake_up(&mvm->d0i3_exit_waitq);
1556         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1557         if (wake_queues)
1558                 ieee80211_wake_queues(mvm->hw);
1559
1560         spin_unlock_bh(&mvm->d0i3_tx_lock);
1561 }
1562
1563 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1564 {
1565         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1566         struct iwl_host_cmd get_status_cmd = {
1567                 .id = WOWLAN_GET_STATUSES,
1568                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1569         };
1570         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1571                 .mvm = mvm,
1572         };
1573
1574         struct iwl_wowlan_status *status;
1575         int ret;
1576         u32 wakeup_reasons = 0;
1577         __le16 *qos_seq = NULL;
1578
1579         mutex_lock(&mvm->mutex);
1580         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1581         if (ret)
1582                 goto out;
1583
1584         if (!get_status_cmd.resp_pkt)
1585                 goto out;
1586
1587         status = (void *)get_status_cmd.resp_pkt->data;
1588         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1589         qos_seq = status->qos_seq_ctr;
1590
1591         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1592
1593         iter_data.wakeup_reasons = wakeup_reasons;
1594         iter_data.status = status;
1595         ieee80211_iterate_active_interfaces(mvm->hw,
1596                                             IEEE80211_IFACE_ITER_NORMAL,
1597                                             iwl_mvm_d0i3_exit_work_iter,
1598                                             &iter_data);
1599 out:
1600         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1601
1602         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1603                        wakeup_reasons);
1604
1605         /* qos_seq might point inside resp_pkt, so free it only now */
1606         if (get_status_cmd.resp_pkt)
1607                 iwl_free_resp(&get_status_cmd);
1608
1609         /* the FW might have updated the regdomain */
1610         iwl_mvm_update_changed_regdom(mvm);
1611
1612         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1613         mutex_unlock(&mvm->mutex);
1614 }
1615
1616 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1617 {
1618         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1619                     CMD_WAKE_UP_TRANS;
1620         int ret;
1621
1622         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1623
1624         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1625                 return -EINVAL;
1626
1627         mutex_lock(&mvm->d0i3_suspend_mutex);
1628         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1629                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1630                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1631                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1632                 return 0;
1633         }
1634         mutex_unlock(&mvm->d0i3_suspend_mutex);
1635
1636         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1637         if (ret)
1638                 goto out;
1639
1640         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1641                                                    IEEE80211_IFACE_ITER_NORMAL,
1642                                                    iwl_mvm_exit_d0i3_iterator,
1643                                                    mvm);
1644 out:
1645         schedule_work(&mvm->d0i3_exit_work);
1646         return ret;
1647 }
1648
1649 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1650 {
1651         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1652
1653         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1654         return _iwl_mvm_exit_d0i3(mvm);
1655 }
1656
1657 #define IWL_MVM_COMMON_OPS                                      \
1658         /* these could be differentiated */                     \
1659         .async_cb = iwl_mvm_async_cb,                           \
1660         .queue_full = iwl_mvm_stop_sw_queue,                    \
1661         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1662         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1663         .free_skb = iwl_mvm_free_skb,                           \
1664         .nic_error = iwl_mvm_nic_error,                         \
1665         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1666         .nic_config = iwl_mvm_nic_config,                       \
1667         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1668         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1669         /* as we only register one, these MUST be common! */    \
1670         .start = iwl_op_mode_mvm_start,                         \
1671         .stop = iwl_op_mode_mvm_stop
1672
1673 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1674         IWL_MVM_COMMON_OPS,
1675         .rx = iwl_mvm_rx,
1676 };
1677
1678 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1679                               struct napi_struct *napi,
1680                               struct iwl_rx_cmd_buffer *rxb,
1681                               unsigned int queue)
1682 {
1683         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1684         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1685         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1686
1687         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1688                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1689         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1690                                          RX_QUEUES_NOTIFICATION)))
1691                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1692         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1693                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1694 }
1695
1696 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1697         IWL_MVM_COMMON_OPS,
1698         .rx = iwl_mvm_rx_mq,
1699         .rx_rss = iwl_mvm_rx_mq_rss,
1700 };