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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
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  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
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  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <linuxwifi@intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  36  * Copyright(c) 2016 Intel Deutschland GmbH
  37  * All rights reserved.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  *
  43  *  * Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  *  * Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in
  47  *    the documentation and/or other materials provided with the
  48  *    distribution.
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  50  *    contributors may be used to endorse or promote products derived
  51  *    from this software without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  54  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  55  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  56  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  57  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  63  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  64  *
  65  *****************************************************************************/
  66 #include <linux/module.h>
  67 #include <linux/vmalloc.h>
  68 #include <net/mac80211.h>
  69
  70 #include "iwl-notif-wait.h"
  71 #include "iwl-trans.h"
  72 #include "iwl-op-mode.h"
  73 #include "iwl-fw.h"
  74 #include "iwl-debug.h"
  75 #include "iwl-drv.h"
  76 #include "iwl-modparams.h"
  77 #include "mvm.h"
  78 #include "iwl-phy-db.h"
  79 #include "iwl-eeprom-parse.h"
  80 #include "iwl-csr.h"
  81 #include "iwl-io.h"
  82 #include "iwl-prph.h"
  83 #include "rs.h"
  84 #include "fw-api-scan.h"
  85 #include "time-event.h"
  86 #include "fw-dbg.h"
  87 #include "fw-api.h"
  88 #include "fw-api-scan.h"
  89
  90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  91 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  93 MODULE_LICENSE("GPL");
  94
  95 static const struct iwl_op_mode_ops iwl_mvm_ops;
  96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  97
  98 struct iwl_mvm_mod_params iwlmvm_mod_params = {
  99         .power_scheme = IWL_POWER_SCHEME_BPS,
 100         .tfd_q_hang_detect = true
 101         /* rest of fields are 0 by default */
 102 };
 103
 104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
 105 MODULE_PARM_DESC(init_dbg,
 106                  "set to true to debug an ASSERT in INIT fw (default: false");
 107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
 108 MODULE_PARM_DESC(power_scheme,
 109                  "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 111                    bool, S_IRUGO);
 112 MODULE_PARM_DESC(tfd_q_hang_detect,
 113                  "TFD queues hang detection (default: true");
 114
 115 /*
 116  * module init and exit functions
 117  */
 118 static int __init iwl_mvm_init(void)
 119 {
 120         int ret;
 121
 122         ret = iwl_mvm_rate_control_register();
 123         if (ret) {
 124                 pr_err("Unable to register rate control algorithm: %d\n", ret);
 125                 return ret;
 126         }
 127
 128         ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 129
 130         if (ret) {
 131                 pr_err("Unable to register MVM op_mode: %d\n", ret);
 132                 iwl_mvm_rate_control_unregister();
 133         }
 134
 135         return ret;
 136 }
 137 module_init(iwl_mvm_init);
 138
 139 static void __exit iwl_mvm_exit(void)
 140 {
 141         iwl_opmode_deregister("iwlmvm");
 142         iwl_mvm_rate_control_unregister();
 143 }
 144 module_exit(iwl_mvm_exit);
 145
 146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
 147 {
 148         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 149         u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
 150         u32 reg_val = 0;
 151         u32 phy_config = iwl_mvm_get_phy_config(mvm);
 152
 153         radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
 154                          FW_PHY_CFG_RADIO_TYPE_POS;
 155         radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
 156                          FW_PHY_CFG_RADIO_STEP_POS;
 157         radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
 158                          FW_PHY_CFG_RADIO_DASH_POS;
 159
 160         /* SKU control */
 161         reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
 162                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
 163         reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
 164                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
 165
 166         /* radio configuration */
 167         reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
 168         reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
 169         reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
 170
 171         WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
 172                  ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
 173
 174         /*
 175          * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
 176          * shouldn't be set to any non-zero value. The same is supposed to be
 177          * true of the other HW, but unsetting them (such as the 7260) causes
 178          * automatic tests to fail on seemingly unrelated errors. Need to
 179          * further investigate this, but for now we'll separate cases.
 180          */
 181         if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
 182                 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 183
 184         iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 185                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 186                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 187                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 188                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 189                                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 190                                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 191                                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 192                                 reg_val);
 193
 194         IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 195                        radio_cfg_step, radio_cfg_dash);
 196
 197         /*
 198          * W/A : NIC is stuck in a reset state after Early PCIe power off
 199          * (PCIe power is lost before PERST# is asserted), causing ME FW
 200          * to lose ownership and not being able to obtain it back.
 201          */
 202         if (!mvm->trans->cfg->apmg_not_supported)
 203                 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 204                                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 205                                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 206 }
 207
 208 /**
 209  * enum iwl_rx_handler_context context for Rx handler
 210  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 211  *      which can't acquire mvm->mutex.
 212  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 213  *      (and only in this case!), it should be set as ASYNC. In that case,
 214  *      it will be called from a worker with mvm->mutex held.
 215  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 216  *      mutex itself, it will be called from a worker without mvm->mutex held.
 217  */
 218 enum iwl_rx_handler_context {
 219         RX_HANDLER_SYNC,
 220         RX_HANDLER_ASYNC_LOCKED,
 221         RX_HANDLER_ASYNC_UNLOCKED,
 222 };
 223
 224 /**
 225  * struct iwl_rx_handlers handler for FW notification
 226  * @cmd_id: command id
 227  * @context: see &iwl_rx_handler_context
 228  * @fn: the function is called when notification is received
 229  */
 230 struct iwl_rx_handlers {
 231         u16 cmd_id;
 232         enum iwl_rx_handler_context context;
 233         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 234 };
 235
 236 #define RX_HANDLER(_cmd_id, _fn, _context)      \
 237         { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)       \
 239         { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 240
 241 /*
 242  * Handlers for fw notifications
 243  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 244  * This list should be in order of frequency for performance purposes.
 245  *
 246  * The handler can be one from three contexts, see &iwl_rx_handler_context
 247  */
 248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 249         RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 250         RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 251
 252         RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 253                    RX_HANDLER_ASYNC_LOCKED),
 254         RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 255                    RX_HANDLER_ASYNC_LOCKED),
 256         RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 257                    RX_HANDLER_ASYNC_LOCKED),
 258         RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
 259                    iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED),
 260
 261         RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 262                    iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 263
 264         RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 265                    RX_HANDLER_SYNC),
 266         RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 267                    RX_HANDLER_ASYNC_LOCKED),
 268
 269         RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 270
 271         RX_HANDLER(SCAN_ITERATION_COMPLETE,
 272                    iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 273         RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 274                    iwl_mvm_rx_lmac_scan_complete_notif,
 275                    RX_HANDLER_ASYNC_LOCKED),
 276         RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 277                    RX_HANDLER_SYNC),
 278         RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 279                    RX_HANDLER_ASYNC_LOCKED),
 280         RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 281                    iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 282
 283         RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 284                    RX_HANDLER_SYNC),
 285
 286         RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 287                    RX_HANDLER_SYNC),
 288
 289         RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 290         RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 291                    iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 292         RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 293                    RX_HANDLER_ASYNC_LOCKED),
 294         RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 295                        iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 296         RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 297                        iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 298
 299         RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 300                    RX_HANDLER_ASYNC_LOCKED),
 301         RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 302                    RX_HANDLER_SYNC),
 303         RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 304                    RX_HANDLER_ASYNC_LOCKED),
 305         RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 306                        iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 307         RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 308                        iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 309 };
 310 #undef RX_HANDLER
 311 #undef RX_HANDLER_GRP
 312
 313 /* Please keep this array *SORTED* by hex value.
 314  * Access is done through binary search
 315  */
 316 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 317         HCMD_NAME(MVM_ALIVE),
 318         HCMD_NAME(REPLY_ERROR),
 319         HCMD_NAME(ECHO_CMD),
 320         HCMD_NAME(INIT_COMPLETE_NOTIF),
 321         HCMD_NAME(PHY_CONTEXT_CMD),
 322         HCMD_NAME(DBG_CFG),
 323         HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION),
 324         HCMD_NAME(SCAN_CFG_CMD),
 325         HCMD_NAME(SCAN_REQ_UMAC),
 326         HCMD_NAME(SCAN_ABORT_UMAC),
 327         HCMD_NAME(SCAN_COMPLETE_UMAC),
 328         HCMD_NAME(TOF_CMD),
 329         HCMD_NAME(TOF_NOTIFICATION),
 330         HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 331         HCMD_NAME(ADD_STA_KEY),
 332         HCMD_NAME(ADD_STA),
 333         HCMD_NAME(REMOVE_STA),
 334         HCMD_NAME(FW_GET_ITEM_CMD),
 335         HCMD_NAME(TX_CMD),
 336         HCMD_NAME(SCD_QUEUE_CFG),
 337         HCMD_NAME(TXPATH_FLUSH),
 338         HCMD_NAME(MGMT_MCAST_KEY),
 339         HCMD_NAME(WEP_KEY),
 340         HCMD_NAME(SHARED_MEM_CFG),
 341         HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 342         HCMD_NAME(MAC_CONTEXT_CMD),
 343         HCMD_NAME(TIME_EVENT_CMD),
 344         HCMD_NAME(TIME_EVENT_NOTIFICATION),
 345         HCMD_NAME(BINDING_CONTEXT_CMD),
 346         HCMD_NAME(TIME_QUOTA_CMD),
 347         HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 348         HCMD_NAME(LQ_CMD),
 349         HCMD_NAME(FW_PAGING_BLOCK_CMD),
 350         HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 351         HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 352         HCMD_NAME(HOT_SPOT_CMD),
 353         HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 354         HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
 355         HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
 356         HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
 357         HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
 358         HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 359         HCMD_NAME(BT_COEX_CI),
 360         HCMD_NAME(PHY_CONFIGURATION_CMD),
 361         HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 362         HCMD_NAME(PHY_DB_CMD),
 363         HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 364         HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 365         HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
 366         HCMD_NAME(POWER_TABLE_CMD),
 367         HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 368         HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 369         HCMD_NAME(DC2DC_CONFIG_CMD),
 370         HCMD_NAME(NVM_ACCESS_CMD),
 371         HCMD_NAME(SET_CALIB_DEFAULT_CMD),
 372         HCMD_NAME(BEACON_NOTIFICATION),
 373         HCMD_NAME(BEACON_TEMPLATE_CMD),
 374         HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 375         HCMD_NAME(BT_CONFIG),
 376         HCMD_NAME(STATISTICS_CMD),
 377         HCMD_NAME(STATISTICS_NOTIFICATION),
 378         HCMD_NAME(EOSP_NOTIFICATION),
 379         HCMD_NAME(REDUCE_TX_POWER_CMD),
 380         HCMD_NAME(CARD_STATE_CMD),
 381         HCMD_NAME(CARD_STATE_NOTIFICATION),
 382         HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 383         HCMD_NAME(TDLS_CONFIG_CMD),
 384         HCMD_NAME(MAC_PM_POWER_TABLE),
 385         HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 386         HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 387         HCMD_NAME(RSS_CONFIG_CMD),
 388         HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 389         HCMD_NAME(REPLY_RX_PHY_CMD),
 390         HCMD_NAME(REPLY_RX_MPDU_CMD),
 391         HCMD_NAME(BA_NOTIF),
 392         HCMD_NAME(MCC_UPDATE_CMD),
 393         HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 394         HCMD_NAME(MARKER_CMD),
 395         HCMD_NAME(BT_COEX_PRIO_TABLE),
 396         HCMD_NAME(BT_COEX_PROT_ENV),
 397         HCMD_NAME(BT_PROFILE_NOTIFICATION),
 398         HCMD_NAME(BCAST_FILTER_CMD),
 399         HCMD_NAME(MCAST_FILTER_CMD),
 400         HCMD_NAME(REPLY_SF_CFG_CMD),
 401         HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 402         HCMD_NAME(D3_CONFIG_CMD),
 403         HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 404         HCMD_NAME(OFFLOADS_QUERY_CMD),
 405         HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 406         HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 407         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
 408         HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 409         HCMD_NAME(WOWLAN_PATTERNS),
 410         HCMD_NAME(WOWLAN_CONFIGURATION),
 411         HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 412         HCMD_NAME(WOWLAN_TKIP_PARAM),
 413         HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 414         HCMD_NAME(WOWLAN_GET_STATUSES),
 415         HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
 416         HCMD_NAME(SCAN_ITERATION_COMPLETE),
 417         HCMD_NAME(D0I3_END_CMD),
 418         HCMD_NAME(LTR_CONFIG),
 419         HCMD_NAME(REPLY_DEBUG_CMD),
 420 };
 421
 422 /* Please keep this array *SORTED* by hex value.
 423  * Access is done through binary search
 424  */
 425 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 426         HCMD_NAME(SHARED_MEM_CFG_CMD),
 427 };
 428
 429 /* Please keep this array *SORTED* by hex value.
 430  * Access is done through binary search
 431  */
 432 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 433         HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
 434         HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
 435         HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 436 };
 437
 438 /* Please keep this array *SORTED* by hex value.
 439  * Access is done through binary search
 440  */
 441 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 442         HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 443         HCMD_NAME(CTDP_CONFIG_CMD),
 444         HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 445         HCMD_NAME(CT_KILL_NOTIFICATION),
 446         HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 447 };
 448
 449 /* Please keep this array *SORTED* by hex value.
 450  * Access is done through binary search
 451  */
 452 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 453         HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 454         HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 455         HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 456         HCMD_NAME(RX_QUEUES_NOTIFICATION),
 457 };
 458
 459 /* Please keep this array *SORTED* by hex value.
 460  * Access is done through binary search
 461  */
 462 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 463         HCMD_NAME(STORED_BEACON_NTF),
 464 };
 465
 466 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 467         [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 468         [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 469         [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 470         [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 471         [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 472         [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 473         [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 474 };
 475
 476 /* this forward declaration can avoid to export the function */
 477 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 478 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 479
 480 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
 481 {
 482         const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
 483
 484         if (!pwr_tx_backoff)
 485                 return 0;
 486
 487         while (pwr_tx_backoff->pwr) {
 488                 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
 489                         return pwr_tx_backoff->backoff;
 490
 491                 pwr_tx_backoff++;
 492         }
 493
 494         return 0;
 495 }
 496
 497 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
 498
 499 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 500 {
 501         struct iwl_mvm *mvm =
 502                 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 503         struct ieee80211_vif *tx_blocked_vif;
 504         struct iwl_mvm_vif *mvmvif;
 505
 506         mutex_lock(&mvm->mutex);
 507
 508         tx_blocked_vif =
 509                 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 510                                           lockdep_is_held(&mvm->mutex));
 511
 512         if (!tx_blocked_vif)
 513                 goto unlock;
 514
 515         mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 516         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 517         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 518 unlock:
 519         mutex_unlock(&mvm->mutex);
 520 }
 521
 522 static struct iwl_op_mode *
 523 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 524                       const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 525 {
 526         struct ieee80211_hw *hw;
 527         struct iwl_op_mode *op_mode;
 528         struct iwl_mvm *mvm;
 529         struct iwl_trans_config trans_cfg = {};
 530         static const u8 no_reclaim_cmds[] = {
 531                 TX_CMD,
 532         };
 533         int err, scan_size;
 534         u32 min_backoff;
 535
 536         /*
 537          * We use IWL_MVM_STATION_COUNT to check the validity of the station
 538          * index all over the driver - check that its value corresponds to the
 539          * array size.
 540          */
 541         BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 542
 543         /********************************
 544          * 1. Allocating and configuring HW data
 545          ********************************/
 546         hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 547                                 sizeof(struct iwl_mvm),
 548                                 &iwl_mvm_hw_ops);
 549         if (!hw)
 550                 return NULL;
 551
 552         if (cfg->max_rx_agg_size)
 553                 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 554
 555         if (cfg->max_tx_agg_size)
 556                 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 557
 558         op_mode = hw->priv;
 559
 560         mvm = IWL_OP_MODE_GET_MVM(op_mode);
 561         mvm->dev = trans->dev;
 562         mvm->trans = trans;
 563         mvm->cfg = cfg;
 564         mvm->fw = fw;
 565         mvm->hw = hw;
 566
 567         if (iwl_mvm_has_new_rx_api(mvm)) {
 568                 op_mode->ops = &iwl_mvm_ops_mq;
 569                 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 570         } else {
 571                 op_mode->ops = &iwl_mvm_ops;
 572                 trans->rx_mpdu_cmd_hdr_size =
 573                         sizeof(struct iwl_rx_mpdu_res_start);
 574
 575                 if (WARN_ON(trans->num_rx_queues > 1))
 576                         goto out_free;
 577         }
 578
 579         mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
 580
 581         if (!iwl_mvm_is_dqa_supported(mvm)) {
 582                 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
 583
 584                 if (mvm->cfg->base_params->num_of_queues == 16) {
 585                         mvm->aux_queue = 11;
 586                         mvm->first_agg_queue = 12;
 587                 } else {
 588                         mvm->aux_queue = 15;
 589                         mvm->first_agg_queue = 16;
 590                 }
 591         } else {
 592                 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 593                 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
 594                 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
 595         }
 596         mvm->sf_state = SF_UNINIT;
 597         mvm->cur_ucode = IWL_UCODE_INIT;
 598         mvm->drop_bcn_ap_mode = true;
 599
 600         mutex_init(&mvm->mutex);
 601         mutex_init(&mvm->d0i3_suspend_mutex);
 602         spin_lock_init(&mvm->async_handlers_lock);
 603         INIT_LIST_HEAD(&mvm->time_event_list);
 604         INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 605         INIT_LIST_HEAD(&mvm->async_handlers_list);
 606         spin_lock_init(&mvm->time_event_lock);
 607         spin_lock_init(&mvm->queue_info_lock);
 608
 609         INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 610         INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 611         INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
 612         INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 613         INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
 614         INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 615         INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 616         INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 617
 618         spin_lock_init(&mvm->d0i3_tx_lock);
 619         spin_lock_init(&mvm->refs_lock);
 620         skb_queue_head_init(&mvm->d0i3_tx);
 621         init_waitqueue_head(&mvm->d0i3_exit_waitq);
 622
 623         atomic_set(&mvm->queue_sync_counter, 0);
 624
 625         SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 626
 627         INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 628
 629         /*
 630          * Populate the state variables that the transport layer needs
 631          * to know about.
 632          */
 633         trans_cfg.op_mode = op_mode;
 634         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 635         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 636         switch (iwlwifi_mod_params.amsdu_size) {
 637         case IWL_AMSDU_DEF:
 638         case IWL_AMSDU_4K:
 639                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 640                 break;
 641         case IWL_AMSDU_8K:
 642                 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 643                 break;
 644         case IWL_AMSDU_12K:
 645                 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 646                 break;
 647         default:
 648                 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 649                        iwlwifi_mod_params.amsdu_size);
 650                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 651         }
 652
 653         /* the hardware splits the A-MSDU */
 654         if (mvm->cfg->mq_rx_supported)
 655                 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 656
 657         trans->wide_cmd_header = true;
 658         trans_cfg.bc_table_dword = true;
 659
 660         trans_cfg.command_groups = iwl_mvm_groups;
 661         trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 662
 663         if (iwl_mvm_is_dqa_supported(mvm))
 664                 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 665         else
 666                 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
 667         trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 668         trans_cfg.scd_set_active = true;
 669
 670         trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 671                                           driver_data[2]);
 672
 673         trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
 674         trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 675
 676         /* Set a short watchdog for the command queue */
 677         trans_cfg.cmd_q_wdg_timeout =
 678                 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 679
 680         snprintf(mvm->hw->wiphy->fw_version,
 681                  sizeof(mvm->hw->wiphy->fw_version),
 682                  "%s", fw->fw_version);
 683
 684         /* Configure transport layer */
 685         iwl_trans_configure(mvm->trans, &trans_cfg);
 686
 687         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 688         trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 689         trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 690         memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 691                sizeof(trans->dbg_conf_tlv));
 692         trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 693
 694         /* set up notification wait support */
 695         iwl_notification_wait_init(&mvm->notif_wait);
 696
 697         /* Init phy db */
 698         mvm->phy_db = iwl_phy_db_init(trans);
 699         if (!mvm->phy_db) {
 700                 IWL_ERR(mvm, "Cannot init phy_db\n");
 701                 goto out_free;
 702         }
 703
 704         IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 705                  mvm->cfg->name, mvm->trans->hw_rev);
 706
 707         if (iwlwifi_mod_params.nvm_file)
 708                 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 709         else
 710                 IWL_DEBUG_EEPROM(mvm->trans->dev,
 711                                  "working without external nvm file\n");
 712
 713         err = iwl_trans_start_hw(mvm->trans);
 714         if (err)
 715                 goto out_free;
 716
 717         mutex_lock(&mvm->mutex);
 718         iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 719         err = iwl_run_init_mvm_ucode(mvm, true);
 720         if (!err || !iwlmvm_mod_params.init_dbg)
 721                 iwl_mvm_stop_device(mvm);
 722         iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 723         mutex_unlock(&mvm->mutex);
 724         /* returns 0 if successful, 1 if success but in rfkill */
 725         if (err < 0 && !iwlmvm_mod_params.init_dbg) {
 726                 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 727                 goto out_free;
 728         }
 729
 730         scan_size = iwl_mvm_scan_size(mvm);
 731
 732         mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 733         if (!mvm->scan_cmd)
 734                 goto out_free;
 735
 736         /* Set EBS as successful as long as not stated otherwise by the FW. */
 737         mvm->last_ebs_successful = true;
 738
 739         err = iwl_mvm_mac_setup_register(mvm);
 740         if (err)
 741                 goto out_free;
 742
 743         min_backoff = calc_min_backoff(trans, cfg);
 744         iwl_mvm_thermal_initialize(mvm, min_backoff);
 745
 746         err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 747         if (err)
 748                 goto out_unregister;
 749
 750         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 751
 752         /* The transport always starts with a taken reference, we can
 753          * release it now if d0i3 is supported */
 754         if (iwl_mvm_is_d0i3_supported(mvm))
 755                 iwl_trans_unref(mvm->trans);
 756
 757         iwl_mvm_tof_init(mvm);
 758
 759         return op_mode;
 760
 761  out_unregister:
 762         ieee80211_unregister_hw(mvm->hw);
 763         iwl_mvm_leds_exit(mvm);
 764         iwl_mvm_thermal_exit(mvm);
 765  out_free:
 766         flush_delayed_work(&mvm->fw_dump_wk);
 767         iwl_phy_db_free(mvm->phy_db);
 768         kfree(mvm->scan_cmd);
 769         iwl_trans_op_mode_leave(trans);
 770
 771         ieee80211_free_hw(mvm->hw);
 772         return NULL;
 773 }
 774
 775 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 776 {
 777         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 778         int i;
 779
 780         /* If d0i3 is supported, we have released the reference that
 781          * the transport started with, so we should take it back now
 782          * that we are leaving.
 783          */
 784         if (iwl_mvm_is_d0i3_supported(mvm))
 785                 iwl_trans_ref(mvm->trans);
 786
 787         iwl_mvm_leds_exit(mvm);
 788
 789         iwl_mvm_thermal_exit(mvm);
 790
 791         ieee80211_unregister_hw(mvm->hw);
 792
 793         kfree(mvm->scan_cmd);
 794         kfree(mvm->mcast_filter_cmd);
 795         mvm->mcast_filter_cmd = NULL;
 796
 797 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 798         kfree(mvm->d3_resume_sram);
 799 #endif
 800
 801         iwl_trans_op_mode_leave(mvm->trans);
 802
 803         iwl_phy_db_free(mvm->phy_db);
 804         mvm->phy_db = NULL;
 805
 806         iwl_free_nvm_data(mvm->nvm_data);
 807         for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 808                 kfree(mvm->nvm_sections[i].data);
 809
 810         iwl_mvm_tof_clean(mvm);
 811
 812         mutex_destroy(&mvm->mutex);
 813         mutex_destroy(&mvm->d0i3_suspend_mutex);
 814
 815         ieee80211_free_hw(mvm->hw);
 816 }
 817
 818 struct iwl_async_handler_entry {
 819         struct list_head list;
 820         struct iwl_rx_cmd_buffer rxb;
 821         enum iwl_rx_handler_context context;
 822         void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 823 };
 824
 825 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 826 {
 827         struct iwl_async_handler_entry *entry, *tmp;
 828
 829         spin_lock_bh(&mvm->async_handlers_lock);
 830         list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 831                 iwl_free_rxb(&entry->rxb);
 832                 list_del(&entry->list);
 833                 kfree(entry);
 834         }
 835         spin_unlock_bh(&mvm->async_handlers_lock);
 836 }
 837
 838 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 839 {
 840         struct iwl_mvm *mvm =
 841                 container_of(wk, struct iwl_mvm, async_handlers_wk);
 842         struct iwl_async_handler_entry *entry, *tmp;
 843         LIST_HEAD(local_list);
 844
 845         /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 846
 847         /*
 848          * Sync with Rx path with a lock. Remove all the entries from this list,
 849          * add them to a local one (lock free), and then handle them.
 850          */
 851         spin_lock_bh(&mvm->async_handlers_lock);
 852         list_splice_init(&mvm->async_handlers_list, &local_list);
 853         spin_unlock_bh(&mvm->async_handlers_lock);
 854
 855         list_for_each_entry_safe(entry, tmp, &local_list, list) {
 856                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 857                         mutex_lock(&mvm->mutex);
 858                 entry->fn(mvm, &entry->rxb);
 859                 iwl_free_rxb(&entry->rxb);
 860                 list_del(&entry->list);
 861                 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 862                         mutex_unlock(&mvm->mutex);
 863                 kfree(entry);
 864         }
 865 }
 866
 867 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 868                                             struct iwl_rx_packet *pkt)
 869 {
 870         struct iwl_fw_dbg_trigger_tlv *trig;
 871         struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 872         int i;
 873
 874         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 875                 return;
 876
 877         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 878         cmds_trig = (void *)trig->data;
 879
 880         if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
 881                 return;
 882
 883         for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 884                 /* don't collect on CMD 0 */
 885                 if (!cmds_trig->cmds[i].cmd_id)
 886                         break;
 887
 888                 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 889                     cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 890                         continue;
 891
 892                 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
 893                                             "CMD 0x%02x.%02x received",
 894                                             pkt->hdr.group_id, pkt->hdr.cmd);
 895                 break;
 896         }
 897 }
 898
 899 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 900                               struct iwl_rx_cmd_buffer *rxb,
 901                               struct iwl_rx_packet *pkt)
 902 {
 903         int i;
 904
 905         iwl_mvm_rx_check_trigger(mvm, pkt);
 906
 907         /*
 908          * Do the notification wait before RX handlers so
 909          * even if the RX handler consumes the RXB we have
 910          * access to it in the notification wait entry.
 911          */
 912         iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 913
 914         for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 915                 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 916                 struct iwl_async_handler_entry *entry;
 917
 918                 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 919                         continue;
 920
 921                 if (rx_h->context == RX_HANDLER_SYNC) {
 922                         rx_h->fn(mvm, rxb);
 923                         return;
 924                 }
 925
 926                 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 927                 /* we can't do much... */
 928                 if (!entry)
 929                         return;
 930
 931                 entry->rxb._page = rxb_steal_page(rxb);
 932                 entry->rxb._offset = rxb->_offset;
 933                 entry->rxb._rx_page_order = rxb->_rx_page_order;
 934                 entry->fn = rx_h->fn;
 935                 entry->context = rx_h->context;
 936                 spin_lock(&mvm->async_handlers_lock);
 937                 list_add_tail(&entry->list, &mvm->async_handlers_list);
 938                 spin_unlock(&mvm->async_handlers_lock);
 939                 schedule_work(&mvm->async_handlers_wk);
 940                 break;
 941         }
 942 }
 943
 944 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 945                        struct napi_struct *napi,
 946                        struct iwl_rx_cmd_buffer *rxb)
 947 {
 948         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 949         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 950         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
 951
 952         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
 953                 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
 954         else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
 955                 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
 956         else
 957                 iwl_mvm_rx_common(mvm, rxb, pkt);
 958 }
 959
 960 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
 961                           struct napi_struct *napi,
 962                           struct iwl_rx_cmd_buffer *rxb)
 963 {
 964         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 965         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 966         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
 967
 968         if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
 969                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
 970         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
 971                                          RX_QUEUES_NOTIFICATION)))
 972                 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
 973         else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
 974                 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
 975         else
 976                 iwl_mvm_rx_common(mvm, rxb, pkt);
 977 }
 978
 979 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
 980 {
 981         int q;
 982
 983         if (WARN_ON_ONCE(!mq))
 984                 return;
 985
 986         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
 987                 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
 988                         IWL_DEBUG_TX_QUEUES(mvm,
 989                                             "mac80211 %d already stopped\n", q);
 990                         continue;
 991                 }
 992
 993                 ieee80211_stop_queue(mvm->hw, q);
 994         }
 995 }
 996
 997 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
 998                              const struct iwl_device_cmd *cmd)
 999 {
1000         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1001
1002         /*
1003          * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1004          * commands that need to block the Tx queues.
1005          */
1006         iwl_trans_block_txq_ptrs(mvm->trans, false);
1007 }
1008
1009 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1010 {
1011         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1012         unsigned long mq;
1013
1014         spin_lock_bh(&mvm->queue_info_lock);
1015         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1016         spin_unlock_bh(&mvm->queue_info_lock);
1017
1018         iwl_mvm_stop_mac_queues(mvm, mq);
1019 }
1020
1021 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1022 {
1023         int q;
1024
1025         if (WARN_ON_ONCE(!mq))
1026                 return;
1027
1028         for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1029                 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1030                         IWL_DEBUG_TX_QUEUES(mvm,
1031                                             "mac80211 %d still stopped\n", q);
1032                         continue;
1033                 }
1034
1035                 ieee80211_wake_queue(mvm->hw, q);
1036         }
1037 }
1038
1039 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1040 {
1041         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1042         unsigned long mq;
1043
1044         spin_lock_bh(&mvm->queue_info_lock);
1045         mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1046         spin_unlock_bh(&mvm->queue_info_lock);
1047
1048         iwl_mvm_start_mac_queues(mvm, mq);
1049 }
1050
1051 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1052 {
1053         if (state)
1054                 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1055         else
1056                 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1057
1058         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1059 }
1060
1061 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1062 {
1063         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1064         bool calibrating = ACCESS_ONCE(mvm->calibrating);
1065
1066         if (state)
1067                 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1068         else
1069                 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1070
1071         wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1072
1073         /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1074         if (calibrating)
1075                 iwl_abort_notification_waits(&mvm->notif_wait);
1076
1077         /*
1078          * Stop the device if we run OPERATIONAL firmware or if we are in the
1079          * middle of the calibrations.
1080          */
1081         return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1082 }
1083
1084 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1085 {
1086         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1087         struct ieee80211_tx_info *info;
1088
1089         info = IEEE80211_SKB_CB(skb);
1090         iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1091         ieee80211_free_txskb(mvm->hw, skb);
1092 }
1093
1094 struct iwl_mvm_reprobe {
1095         struct device *dev;
1096         struct work_struct work;
1097 };
1098
1099 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1100 {
1101         struct iwl_mvm_reprobe *reprobe;
1102
1103         reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1104         if (device_reprobe(reprobe->dev))
1105                 dev_err(reprobe->dev, "reprobe failed!\n");
1106         kfree(reprobe);
1107         module_put(THIS_MODULE);
1108 }
1109
1110 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1111 {
1112         struct iwl_mvm *mvm =
1113                 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1114
1115         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1116                 return;
1117
1118         mutex_lock(&mvm->mutex);
1119
1120         /* stop recording */
1121         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1122                 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1123         } else {
1124                 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1125                 /* wait before we collect the data till the DBGC stop */
1126                 udelay(100);
1127         }
1128
1129         iwl_mvm_fw_error_dump(mvm);
1130
1131         /* start recording again if the firmware is not crashed */
1132         WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1133                      mvm->fw->dbg_dest_tlv &&
1134                      iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1135
1136         mutex_unlock(&mvm->mutex);
1137
1138         iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1139 }
1140
1141 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1142 {
1143         iwl_abort_notification_waits(&mvm->notif_wait);
1144
1145         /*
1146          * This is a bit racy, but worst case we tell mac80211 about
1147          * a stopped/aborted scan when that was already done which
1148          * is not a problem. It is necessary to abort any os scan
1149          * here because mac80211 requires having the scan cleared
1150          * before restarting.
1151          * We'll reset the scan_status to NONE in restart cleanup in
1152          * the next start() call from mac80211. If restart isn't called
1153          * (no fw restart) scan status will stay busy.
1154          */
1155         iwl_mvm_report_scan_aborted(mvm);
1156
1157         /*
1158          * If we're restarting already, don't cycle restarts.
1159          * If INIT fw asserted, it will likely fail again.
1160          * If WoWLAN fw asserted, don't restart either, mac80211
1161          * can't recover this since we're already half suspended.
1162          */
1163         if (!mvm->restart_fw && fw_error) {
1164                 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1165                                             NULL);
1166         } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1167                                     &mvm->status)) {
1168                 struct iwl_mvm_reprobe *reprobe;
1169
1170                 IWL_ERR(mvm,
1171                         "Firmware error during reconfiguration - reprobe!\n");
1172
1173                 /*
1174                  * get a module reference to avoid doing this while unloading
1175                  * anyway and to avoid scheduling a work with code that's
1176                  * being removed.
1177                  */
1178                 if (!try_module_get(THIS_MODULE)) {
1179                         IWL_ERR(mvm, "Module is being unloaded - abort\n");
1180                         return;
1181                 }
1182
1183                 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1184                 if (!reprobe) {
1185                         module_put(THIS_MODULE);
1186                         return;
1187                 }
1188                 reprobe->dev = mvm->trans->dev;
1189                 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1190                 schedule_work(&reprobe->work);
1191         } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1192                 /* don't let the transport/FW power down */
1193                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1194
1195                 if (fw_error && mvm->restart_fw > 0)
1196                         mvm->restart_fw--;
1197                 ieee80211_restart_hw(mvm->hw);
1198         }
1199 }
1200
1201 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1202 {
1203         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1204
1205         iwl_mvm_dump_nic_error_log(mvm);
1206
1207         iwl_mvm_nic_restart(mvm, true);
1208 }
1209
1210 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1211 {
1212         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1213
1214         WARN_ON(1);
1215         iwl_mvm_nic_restart(mvm, true);
1216 }
1217
1218 struct iwl_d0i3_iter_data {
1219         struct iwl_mvm *mvm;
1220         struct ieee80211_vif *connected_vif;
1221         u8 ap_sta_id;
1222         u8 vif_count;
1223         u8 offloading_tid;
1224         bool disable_offloading;
1225 };
1226
1227 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1228                                         struct ieee80211_vif *vif,
1229                                         struct iwl_d0i3_iter_data *iter_data)
1230 {
1231         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1232         struct iwl_mvm_sta *mvmsta;
1233         u32 available_tids = 0;
1234         u8 tid;
1235
1236         if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1237                     mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1238                 return false;
1239
1240         mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1241         if (!mvmsta)
1242                 return false;
1243
1244         spin_lock_bh(&mvmsta->lock);
1245         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1246                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1247
1248                 /*
1249                  * in case of pending tx packets, don't use this tid
1250                  * for offloading in order to prevent reuse of the same
1251                  * qos seq counters.
1252                  */
1253                 if (iwl_mvm_tid_queued(tid_data))
1254                         continue;
1255
1256                 if (tid_data->state != IWL_AGG_OFF)
1257                         continue;
1258
1259                 available_tids |= BIT(tid);
1260         }
1261         spin_unlock_bh(&mvmsta->lock);
1262
1263         /*
1264          * disallow protocol offloading if we have no available tid
1265          * (with no pending frames and no active aggregation,
1266          * as we don't handle "holes" properly - the scheduler needs the
1267          * frame's seq number and TFD index to match)
1268          */
1269         if (!available_tids)
1270                 return true;
1271
1272         /* for simplicity, just use the first available tid */
1273         iter_data->offloading_tid = ffs(available_tids) - 1;
1274         return false;
1275 }
1276
1277 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1278                                         struct ieee80211_vif *vif)
1279 {
1280         struct iwl_d0i3_iter_data *data = _data;
1281         struct iwl_mvm *mvm = data->mvm;
1282         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1283         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1284
1285         IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1286         if (vif->type != NL80211_IFTYPE_STATION ||
1287             !vif->bss_conf.assoc)
1288                 return;
1289
1290         /*
1291          * in case of pending tx packets or active aggregations,
1292          * avoid offloading features in order to prevent reuse of
1293          * the same qos seq counters.
1294          */
1295         if (iwl_mvm_disallow_offloading(mvm, vif, data))
1296                 data->disable_offloading = true;
1297
1298         iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1299         iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1300                                    false, flags);
1301
1302         /*
1303          * on init/association, mvm already configures POWER_TABLE_CMD
1304          * and REPLY_MCAST_FILTER_CMD, so currently don't
1305          * reconfigure them (we might want to use different
1306          * params later on, though).
1307          */
1308         data->ap_sta_id = mvmvif->ap_sta_id;
1309         data->vif_count++;
1310
1311         /*
1312          * no new commands can be sent at this stage, so it's safe
1313          * to save the vif pointer during d0i3 entrance.
1314          */
1315         data->connected_vif = vif;
1316 }
1317
1318 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1319                                     struct iwl_wowlan_config_cmd *cmd,
1320                                     struct iwl_d0i3_iter_data *iter_data)
1321 {
1322         struct ieee80211_sta *ap_sta;
1323         struct iwl_mvm_sta *mvm_ap_sta;
1324
1325         if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1326                 return;
1327
1328         rcu_read_lock();
1329
1330         ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1331         if (IS_ERR_OR_NULL(ap_sta))
1332                 goto out;
1333
1334         mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1335         cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1336         cmd->offloading_tid = iter_data->offloading_tid;
1337         cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1338                 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1339         /*
1340          * The d0i3 uCode takes care of the nonqos counters,
1341          * so configure only the qos seq ones.
1342          */
1343         iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1344 out:
1345         rcu_read_unlock();
1346 }
1347
1348 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1349 {
1350         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1351         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1352         int ret;
1353         struct iwl_d0i3_iter_data d0i3_iter_data = {
1354                 .mvm = mvm,
1355         };
1356         struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1357                 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1358                                              IWL_WOWLAN_WAKEUP_BEACON_MISS |
1359                                              IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1360         };
1361         struct iwl_d3_manager_config d3_cfg_cmd = {
1362                 .min_sleep_time = cpu_to_le32(1000),
1363                 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1364         };
1365
1366         IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1367
1368         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1369                 return -EINVAL;
1370
1371         set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1372
1373         /*
1374          * iwl_mvm_ref_sync takes a reference before checking the flag.
1375          * so by checking there is no held reference we prevent a state
1376          * in which iwl_mvm_ref_sync continues successfully while we
1377          * configure the firmware to enter d0i3
1378          */
1379         if (iwl_mvm_ref_taken(mvm)) {
1380                 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1381                 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1382                 wake_up(&mvm->d0i3_exit_waitq);
1383                 return 1;
1384         }
1385
1386         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1387                                                    IEEE80211_IFACE_ITER_NORMAL,
1388                                                    iwl_mvm_enter_d0i3_iterator,
1389                                                    &d0i3_iter_data);
1390         if (d0i3_iter_data.vif_count == 1) {
1391                 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1392                 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1393         } else {
1394                 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1395                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1396                 mvm->d0i3_offloading = false;
1397         }
1398
1399         /* make sure we have no running tx while configuring the seqno */
1400         synchronize_net();
1401
1402         /* Flush the hw queues, in case something got queued during entry */
1403         ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1404         if (ret)
1405                 return ret;
1406
1407         /* configure wowlan configuration only if needed */
1408         if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1409                 /* wake on beacons only if beacon storing isn't supported */
1410                 if (!fw_has_capa(&mvm->fw->ucode_capa,
1411                                  IWL_UCODE_TLV_CAPA_BEACON_STORING))
1412                         wowlan_config_cmd.wakeup_filter |=
1413                                 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1414
1415                 iwl_mvm_wowlan_config_key_params(mvm,
1416                                                  d0i3_iter_data.connected_vif,
1417                                                  true, flags);
1418
1419                 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1420                                         &d0i3_iter_data);
1421
1422                 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1423                                            sizeof(wowlan_config_cmd),
1424                                            &wowlan_config_cmd);
1425                 if (ret)
1426                         return ret;
1427         }
1428
1429         return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1430                                     flags | CMD_MAKE_TRANS_IDLE,
1431                                     sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1432 }
1433
1434 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1435                                        struct ieee80211_vif *vif)
1436 {
1437         struct iwl_mvm *mvm = _data;
1438         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1439
1440         IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1441         if (vif->type != NL80211_IFTYPE_STATION ||
1442             !vif->bss_conf.assoc)
1443                 return;
1444
1445         iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1446 }
1447
1448 struct iwl_mvm_d0i3_exit_work_iter_data {
1449         struct iwl_mvm *mvm;
1450         struct iwl_wowlan_status *status;
1451         u32 wakeup_reasons;
1452 };
1453
1454 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1455                                         struct ieee80211_vif *vif)
1456 {
1457         struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1458         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1459         u32 reasons = data->wakeup_reasons;
1460
1461         /* consider only the relevant station interface */
1462         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1463             data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1464                 return;
1465
1466         if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1467                 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1468         else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1469                 ieee80211_beacon_loss(vif);
1470         else
1471                 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1472 }
1473
1474 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1475 {
1476         struct ieee80211_sta *sta = NULL;
1477         struct iwl_mvm_sta *mvm_ap_sta;
1478         int i;
1479         bool wake_queues = false;
1480
1481         lockdep_assert_held(&mvm->mutex);
1482
1483         spin_lock_bh(&mvm->d0i3_tx_lock);
1484
1485         if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1486                 goto out;
1487
1488         IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1489
1490         /* get the sta in order to update seq numbers and re-enqueue skbs */
1491         sta = rcu_dereference_protected(
1492                         mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1493                         lockdep_is_held(&mvm->mutex));
1494
1495         if (IS_ERR_OR_NULL(sta)) {
1496                 sta = NULL;
1497                 goto out;
1498         }
1499
1500         if (mvm->d0i3_offloading && qos_seq) {
1501                 /* update qos seq numbers if offloading was enabled */
1502                 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1503                 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1504                         u16 seq = le16_to_cpu(qos_seq[i]);
1505                         /* firmware stores last-used one, we store next one */
1506                         seq += 0x10;
1507                         mvm_ap_sta->tid_data[i].seq_number = seq;
1508                 }
1509         }
1510 out:
1511         /* re-enqueue (or drop) all packets */
1512         while (!skb_queue_empty(&mvm->d0i3_tx)) {
1513                 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1514
1515                 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1516                         ieee80211_free_txskb(mvm->hw, skb);
1517
1518                 /* if the skb_queue is not empty, we need to wake queues */
1519                 wake_queues = true;
1520         }
1521         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1522         wake_up(&mvm->d0i3_exit_waitq);
1523         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1524         if (wake_queues)
1525                 ieee80211_wake_queues(mvm->hw);
1526
1527         spin_unlock_bh(&mvm->d0i3_tx_lock);
1528 }
1529
1530 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1531 {
1532         struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1533         struct iwl_host_cmd get_status_cmd = {
1534                 .id = WOWLAN_GET_STATUSES,
1535                 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1536         };
1537         struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1538                 .mvm = mvm,
1539         };
1540
1541         struct iwl_wowlan_status *status;
1542         int ret;
1543         u32 wakeup_reasons = 0;
1544         __le16 *qos_seq = NULL;
1545
1546         mutex_lock(&mvm->mutex);
1547         ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1548         if (ret)
1549                 goto out;
1550
1551         if (!get_status_cmd.resp_pkt)
1552                 goto out;
1553
1554         status = (void *)get_status_cmd.resp_pkt->data;
1555         wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1556         qos_seq = status->qos_seq_ctr;
1557
1558         IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1559
1560         iter_data.wakeup_reasons = wakeup_reasons;
1561         iter_data.status = status;
1562         ieee80211_iterate_active_interfaces(mvm->hw,
1563                                             IEEE80211_IFACE_ITER_NORMAL,
1564                                             iwl_mvm_d0i3_exit_work_iter,
1565                                             &iter_data);
1566 out:
1567         iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1568
1569         IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1570                        wakeup_reasons);
1571
1572         /* qos_seq might point inside resp_pkt, so free it only now */
1573         if (get_status_cmd.resp_pkt)
1574                 iwl_free_resp(&get_status_cmd);
1575
1576         /* the FW might have updated the regdomain */
1577         iwl_mvm_update_changed_regdom(mvm);
1578
1579         iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1580         mutex_unlock(&mvm->mutex);
1581 }
1582
1583 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1584 {
1585         u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1586                     CMD_WAKE_UP_TRANS;
1587         int ret;
1588
1589         IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1590
1591         if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1592                 return -EINVAL;
1593
1594         mutex_lock(&mvm->d0i3_suspend_mutex);
1595         if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1596                 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1597                 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1598                 mutex_unlock(&mvm->d0i3_suspend_mutex);
1599                 return 0;
1600         }
1601         mutex_unlock(&mvm->d0i3_suspend_mutex);
1602
1603         ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1604         if (ret)
1605                 goto out;
1606
1607         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1608                                                    IEEE80211_IFACE_ITER_NORMAL,
1609                                                    iwl_mvm_exit_d0i3_iterator,
1610                                                    mvm);
1611 out:
1612         schedule_work(&mvm->d0i3_exit_work);
1613         return ret;
1614 }
1615
1616 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1617 {
1618         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1619
1620         iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1621         return _iwl_mvm_exit_d0i3(mvm);
1622 }
1623
1624 #define IWL_MVM_COMMON_OPS                                      \
1625         /* these could be differentiated */                     \
1626         .async_cb = iwl_mvm_async_cb,                           \
1627         .queue_full = iwl_mvm_stop_sw_queue,                    \
1628         .queue_not_full = iwl_mvm_wake_sw_queue,                \
1629         .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,              \
1630         .free_skb = iwl_mvm_free_skb,                           \
1631         .nic_error = iwl_mvm_nic_error,                         \
1632         .cmd_queue_full = iwl_mvm_cmd_queue_full,               \
1633         .nic_config = iwl_mvm_nic_config,                       \
1634         .enter_d0i3 = iwl_mvm_enter_d0i3,                       \
1635         .exit_d0i3 = iwl_mvm_exit_d0i3,                         \
1636         /* as we only register one, these MUST be common! */    \
1637         .start = iwl_op_mode_mvm_start,                         \
1638         .stop = iwl_op_mode_mvm_stop
1639
1640 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1641         IWL_MVM_COMMON_OPS,
1642         .rx = iwl_mvm_rx,
1643 };
1644
1645 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1646                               struct napi_struct *napi,
1647                               struct iwl_rx_cmd_buffer *rxb,
1648                               unsigned int queue)
1649 {
1650         struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1651         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1652         u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1653
1654         if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1655                 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1656         else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1657                                          RX_QUEUES_NOTIFICATION)))
1658                 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1659         else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1660                 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1661 }
1662
1663 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1664         IWL_MVM_COMMON_OPS,
1665         .rx = iwl_mvm_rx_mq,
1666         .rx_rss = iwl_mvm_rx_mq_rss,
1667 };