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0001 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
0002 /*
0003  * Copyright (C) 2012-2014, 2018-2020 Intel Corporation
0004  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
0005  * Copyright (C) 2016-2017 Intel Deutschland GmbH
0006  */
0007 #include <linux/module.h>
0008 #include <linux/rtnetlink.h>
0009 #include <linux/vmalloc.h>
0010 #include <net/mac80211.h>
0011 
0012 #include "fw/notif-wait.h"
0013 #include "iwl-trans.h"
0014 #include "iwl-op-mode.h"
0015 #include "fw/img.h"
0016 #include "iwl-debug.h"
0017 #include "iwl-drv.h"
0018 #include "iwl-modparams.h"
0019 #include "mvm.h"
0020 #include "iwl-phy-db.h"
0021 #include "iwl-eeprom-parse.h"
0022 #include "iwl-csr.h"
0023 #include "iwl-io.h"
0024 #include "iwl-prph.h"
0025 #include "rs.h"
0026 #include "fw/api/scan.h"
0027 #include "fw/api/rfi.h"
0028 #include "time-event.h"
0029 #include "fw-api.h"
0030 #include "fw/acpi.h"
0031 #include "fw/uefi.h"
0032 
0033 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
0034 MODULE_DESCRIPTION(DRV_DESCRIPTION);
0035 MODULE_LICENSE("GPL");
0036 MODULE_IMPORT_NS(IWLWIFI);
0037 
0038 static const struct iwl_op_mode_ops iwl_mvm_ops;
0039 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
0040 
0041 struct iwl_mvm_mod_params iwlmvm_mod_params = {
0042     .power_scheme = IWL_POWER_SCHEME_BPS,
0043     /* rest of fields are 0 by default */
0044 };
0045 
0046 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
0047 MODULE_PARM_DESC(init_dbg,
0048          "set to true to debug an ASSERT in INIT fw (default: false");
0049 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
0050 MODULE_PARM_DESC(power_scheme,
0051          "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
0052 
0053 /*
0054  * module init and exit functions
0055  */
0056 static int __init iwl_mvm_init(void)
0057 {
0058     int ret;
0059 
0060     ret = iwl_mvm_rate_control_register();
0061     if (ret) {
0062         pr_err("Unable to register rate control algorithm: %d\n", ret);
0063         return ret;
0064     }
0065 
0066     ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
0067     if (ret)
0068         pr_err("Unable to register MVM op_mode: %d\n", ret);
0069 
0070     return ret;
0071 }
0072 module_init(iwl_mvm_init);
0073 
0074 static void __exit iwl_mvm_exit(void)
0075 {
0076     iwl_opmode_deregister("iwlmvm");
0077     iwl_mvm_rate_control_unregister();
0078 }
0079 module_exit(iwl_mvm_exit);
0080 
0081 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
0082 {
0083     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
0084     u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
0085     u32 reg_val;
0086     u32 phy_config = iwl_mvm_get_phy_config(mvm);
0087 
0088     radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
0089              FW_PHY_CFG_RADIO_TYPE_POS;
0090     radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
0091              FW_PHY_CFG_RADIO_STEP_POS;
0092     radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
0093              FW_PHY_CFG_RADIO_DASH_POS;
0094 
0095     /* SKU control */
0096     reg_val = CSR_HW_REV_STEP_DASH(mvm->trans->hw_rev);
0097 
0098     /* radio configuration */
0099     reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
0100     reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
0101     reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
0102 
0103     WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
0104          ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
0105 
0106     /*
0107      * TODO: Bits 7-8 of CSR in 8000 HW family and higher set the ADC
0108      * sampling, and shouldn't be set to any non-zero value.
0109      * The same is supposed to be true of the other HW, but unsetting
0110      * them (such as the 7260) causes automatic tests to fail on seemingly
0111      * unrelated errors. Need to further investigate this, but for now
0112      * we'll separate cases.
0113      */
0114     if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_8000)
0115         reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
0116 
0117     if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt))
0118         reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;
0119 
0120     iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
0121                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP_DASH |
0122                 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
0123                 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
0124                 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
0125                 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
0126                 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI   |
0127                 CSR_HW_IF_CONFIG_REG_D3_DEBUG,
0128                 reg_val);
0129 
0130     IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
0131                radio_cfg_step, radio_cfg_dash);
0132 
0133     /*
0134      * W/A : NIC is stuck in a reset state after Early PCIe power off
0135      * (PCIe power is lost before PERST# is asserted), causing ME FW
0136      * to lose ownership and not being able to obtain it back.
0137      */
0138     if (!mvm->trans->cfg->apmg_not_supported)
0139         iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
0140                        APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
0141                        ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
0142 }
0143 
0144 static void iwl_mvm_rx_monitor_notif(struct iwl_mvm *mvm,
0145                      struct iwl_rx_cmd_buffer *rxb)
0146 {
0147     struct iwl_rx_packet *pkt = rxb_addr(rxb);
0148     struct iwl_datapath_monitor_notif *notif = (void *)pkt->data;
0149     struct ieee80211_supported_band *sband;
0150     const struct ieee80211_sta_he_cap *he_cap;
0151     struct ieee80211_vif *vif;
0152 
0153     if (notif->type != cpu_to_le32(IWL_DP_MON_NOTIF_TYPE_EXT_CCA))
0154         return;
0155 
0156     vif = iwl_mvm_get_vif_by_macid(mvm, notif->mac_id);
0157     if (!vif || vif->type != NL80211_IFTYPE_STATION)
0158         return;
0159 
0160     if (!vif->bss_conf.chandef.chan ||
0161         vif->bss_conf.chandef.chan->band != NL80211_BAND_2GHZ ||
0162         vif->bss_conf.chandef.width < NL80211_CHAN_WIDTH_40)
0163         return;
0164 
0165     if (!vif->cfg.assoc)
0166         return;
0167 
0168     /* this shouldn't happen *again*, ignore it */
0169     if (mvm->cca_40mhz_workaround)
0170         return;
0171 
0172     /*
0173      * We'll decrement this on disconnect - so set to 2 since we'll
0174      * still have to disconnect from the current AP first.
0175      */
0176     mvm->cca_40mhz_workaround = 2;
0177 
0178     /*
0179      * This capability manipulation isn't really ideal, but it's the
0180      * easiest choice - otherwise we'd have to do some major changes
0181      * in mac80211 to support this, which isn't worth it. This does
0182      * mean that userspace may have outdated information, but that's
0183      * actually not an issue at all.
0184      */
0185     sband = mvm->hw->wiphy->bands[NL80211_BAND_2GHZ];
0186 
0187     WARN_ON(!sband->ht_cap.ht_supported);
0188     WARN_ON(!(sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40));
0189     sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
0190 
0191     he_cap = ieee80211_get_he_iftype_cap(sband,
0192                          ieee80211_vif_type_p2p(vif));
0193 
0194     if (he_cap) {
0195         /* we know that ours is writable */
0196         struct ieee80211_sta_he_cap *he = (void *)(uintptr_t)he_cap;
0197 
0198         WARN_ON(!he->has_he);
0199         WARN_ON(!(he->he_cap_elem.phy_cap_info[0] &
0200                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G));
0201         he->he_cap_elem.phy_cap_info[0] &=
0202             ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
0203     }
0204 
0205     ieee80211_disconnect(vif, true);
0206 }
0207 
0208 void iwl_mvm_apply_fw_smps_request(struct ieee80211_vif *vif)
0209 {
0210     struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
0211     struct iwl_mvm *mvm = mvmvif->mvm;
0212     enum ieee80211_smps_mode mode = IEEE80211_SMPS_AUTOMATIC;
0213 
0214     if (mvm->fw_static_smps_request &&
0215         vif->bss_conf.chandef.width == NL80211_CHAN_WIDTH_160 &&
0216         vif->bss_conf.he_support)
0217         mode = IEEE80211_SMPS_STATIC;
0218 
0219     iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_FW, mode);
0220 }
0221 
0222 static void iwl_mvm_intf_dual_chain_req(void *data, u8 *mac,
0223                     struct ieee80211_vif *vif)
0224 {
0225     iwl_mvm_apply_fw_smps_request(vif);
0226 }
0227 
0228 static void iwl_mvm_rx_thermal_dual_chain_req(struct iwl_mvm *mvm,
0229                           struct iwl_rx_cmd_buffer *rxb)
0230 {
0231     struct iwl_rx_packet *pkt = rxb_addr(rxb);
0232     struct iwl_thermal_dual_chain_request *req = (void *)pkt->data;
0233 
0234     /*
0235      * We could pass it to the iterator data, but also need to remember
0236      * it for new interfaces that are added while in this state.
0237      */
0238     mvm->fw_static_smps_request =
0239         req->event == cpu_to_le32(THERMAL_DUAL_CHAIN_REQ_DISABLE);
0240     ieee80211_iterate_interfaces(mvm->hw,
0241                      IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER,
0242                      iwl_mvm_intf_dual_chain_req, NULL);
0243 }
0244 
0245 /**
0246  * enum iwl_rx_handler_context context for Rx handler
0247  * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
0248  *  which can't acquire mvm->mutex.
0249  * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
0250  *  (and only in this case!), it should be set as ASYNC. In that case,
0251  *  it will be called from a worker with mvm->mutex held.
0252  * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
0253  *  mutex itself, it will be called from a worker without mvm->mutex held.
0254  */
0255 enum iwl_rx_handler_context {
0256     RX_HANDLER_SYNC,
0257     RX_HANDLER_ASYNC_LOCKED,
0258     RX_HANDLER_ASYNC_UNLOCKED,
0259 };
0260 
0261 /**
0262  * struct iwl_rx_handlers handler for FW notification
0263  * @cmd_id: command id
0264  * @min_size: minimum size to expect for the notification
0265  * @context: see &iwl_rx_handler_context
0266  * @fn: the function is called when notification is received
0267  */
0268 struct iwl_rx_handlers {
0269     u16 cmd_id, min_size;
0270     enum iwl_rx_handler_context context;
0271     void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
0272 };
0273 
0274 #define RX_HANDLER_NO_SIZE(_cmd_id, _fn, _context)      \
0275     { .cmd_id = _cmd_id, .fn = _fn, .context = _context, }
0276 #define RX_HANDLER_GRP_NO_SIZE(_grp, _cmd, _fn, _context)   \
0277     { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context, }
0278 #define RX_HANDLER(_cmd_id, _fn, _context, _struct)     \
0279     { .cmd_id = _cmd_id, .fn = _fn,             \
0280       .context = _context, .min_size = sizeof(_struct), }
0281 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context, _struct)  \
0282     { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn,     \
0283       .context = _context, .min_size = sizeof(_struct), }
0284 
0285 /*
0286  * Handlers for fw notifications
0287  * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
0288  * This list should be in order of frequency for performance purposes.
0289  *
0290  * The handler can be one from three contexts, see &iwl_rx_handler_context
0291  */
0292 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
0293     RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC,
0294            struct iwl_mvm_tx_resp),
0295     RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC,
0296            struct iwl_mvm_ba_notif),
0297 
0298     RX_HANDLER_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
0299                iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC,
0300                struct iwl_tlc_update_notif),
0301 
0302     RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
0303            RX_HANDLER_ASYNC_LOCKED, struct iwl_bt_coex_profile_notif),
0304     RX_HANDLER_NO_SIZE(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
0305                RX_HANDLER_ASYNC_LOCKED),
0306     RX_HANDLER_NO_SIZE(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
0307                RX_HANDLER_ASYNC_LOCKED),
0308 
0309     RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
0310            iwl_mvm_window_status_notif, RX_HANDLER_SYNC,
0311            struct iwl_ba_window_status_notif),
0312 
0313     RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
0314            RX_HANDLER_SYNC, struct iwl_time_event_notif),
0315     RX_HANDLER_GRP(MAC_CONF_GROUP, SESSION_PROTECTION_NOTIF,
0316                iwl_mvm_rx_session_protect_notif, RX_HANDLER_SYNC,
0317                struct iwl_mvm_session_prot_notif),
0318     RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
0319            RX_HANDLER_ASYNC_LOCKED, struct iwl_mcc_chub_notif),
0320 
0321     RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC,
0322            struct iwl_mvm_eosp_notification),
0323 
0324     RX_HANDLER(SCAN_ITERATION_COMPLETE,
0325            iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC,
0326            struct iwl_lmac_scan_complete_notif),
0327     RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
0328            iwl_mvm_rx_lmac_scan_complete_notif,
0329            RX_HANDLER_ASYNC_LOCKED, struct iwl_periodic_scan_complete),
0330     RX_HANDLER_NO_SIZE(MATCH_FOUND_NOTIFICATION,
0331                iwl_mvm_rx_scan_match_found,
0332                RX_HANDLER_SYNC),
0333     RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
0334            RX_HANDLER_ASYNC_LOCKED, struct iwl_umac_scan_complete),
0335     RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
0336            iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC,
0337            struct iwl_umac_scan_iter_complete_notif),
0338 
0339     RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
0340            RX_HANDLER_SYNC, struct iwl_missed_beacons_notif),
0341 
0342     RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC,
0343            struct iwl_error_resp),
0344     RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
0345            iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC,
0346            struct iwl_uapsd_misbehaving_ap_notif),
0347     RX_HANDLER_NO_SIZE(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
0348                RX_HANDLER_ASYNC_LOCKED),
0349     RX_HANDLER_GRP_NO_SIZE(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
0350                    iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
0351     RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
0352                iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC,
0353                struct ct_kill_notif),
0354 
0355     RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
0356            RX_HANDLER_ASYNC_LOCKED,
0357            struct iwl_tdls_channel_switch_notif),
0358     RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
0359            RX_HANDLER_SYNC, struct iwl_mfuart_load_notif_v1),
0360     RX_HANDLER_GRP(LOCATION_GROUP, TOF_RESPONDER_STATS,
0361                iwl_mvm_ftm_responder_stats, RX_HANDLER_ASYNC_LOCKED,
0362                struct iwl_ftm_responder_stats),
0363 
0364     RX_HANDLER_GRP_NO_SIZE(LOCATION_GROUP, TOF_RANGE_RESPONSE_NOTIF,
0365                    iwl_mvm_ftm_range_resp, RX_HANDLER_ASYNC_LOCKED),
0366     RX_HANDLER_GRP_NO_SIZE(LOCATION_GROUP, TOF_LC_NOTIF,
0367                    iwl_mvm_ftm_lc_notif, RX_HANDLER_ASYNC_LOCKED),
0368 
0369     RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
0370                iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC,
0371                struct iwl_mfu_assert_dump_notif),
0372     RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
0373                iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC,
0374                struct iwl_stored_beacon_notif_v2),
0375     RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
0376                iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC,
0377                struct iwl_mu_group_mgmt_notif),
0378     RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
0379                iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC,
0380                struct iwl_mvm_pm_state_notification),
0381     RX_HANDLER_GRP(MAC_CONF_GROUP, PROBE_RESPONSE_DATA_NOTIF,
0382                iwl_mvm_probe_resp_data_notif,
0383                RX_HANDLER_ASYNC_LOCKED,
0384                struct iwl_probe_resp_data_notif),
0385     RX_HANDLER_GRP(MAC_CONF_GROUP, CHANNEL_SWITCH_START_NOTIF,
0386                iwl_mvm_channel_switch_start_notif,
0387                RX_HANDLER_SYNC, struct iwl_channel_switch_start_notif),
0388     RX_HANDLER_GRP(MAC_CONF_GROUP, CHANNEL_SWITCH_ERROR_NOTIF,
0389                iwl_mvm_channel_switch_error_notif,
0390                RX_HANDLER_ASYNC_UNLOCKED,
0391                struct iwl_channel_switch_error_notif),
0392     RX_HANDLER_GRP(DATA_PATH_GROUP, MONITOR_NOTIF,
0393                iwl_mvm_rx_monitor_notif, RX_HANDLER_ASYNC_LOCKED,
0394                struct iwl_datapath_monitor_notif),
0395 
0396     RX_HANDLER_GRP(DATA_PATH_GROUP, THERMAL_DUAL_CHAIN_REQUEST,
0397                iwl_mvm_rx_thermal_dual_chain_req,
0398                RX_HANDLER_ASYNC_LOCKED,
0399                struct iwl_thermal_dual_chain_request),
0400 
0401     RX_HANDLER_GRP(SYSTEM_GROUP, RFI_DEACTIVATE_NOTIF,
0402                iwl_rfi_deactivate_notif_handler, RX_HANDLER_ASYNC_UNLOCKED,
0403                struct iwl_rfi_deactivate_notif),
0404 };
0405 #undef RX_HANDLER
0406 #undef RX_HANDLER_GRP
0407 
0408 /* Please keep this array *SORTED* by hex value.
0409  * Access is done through binary search
0410  */
0411 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
0412     HCMD_NAME(UCODE_ALIVE_NTFY),
0413     HCMD_NAME(REPLY_ERROR),
0414     HCMD_NAME(ECHO_CMD),
0415     HCMD_NAME(INIT_COMPLETE_NOTIF),
0416     HCMD_NAME(PHY_CONTEXT_CMD),
0417     HCMD_NAME(DBG_CFG),
0418     HCMD_NAME(SCAN_CFG_CMD),
0419     HCMD_NAME(SCAN_REQ_UMAC),
0420     HCMD_NAME(SCAN_ABORT_UMAC),
0421     HCMD_NAME(SCAN_COMPLETE_UMAC),
0422     HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
0423     HCMD_NAME(ADD_STA_KEY),
0424     HCMD_NAME(ADD_STA),
0425     HCMD_NAME(REMOVE_STA),
0426     HCMD_NAME(FW_GET_ITEM_CMD),
0427     HCMD_NAME(TX_CMD),
0428     HCMD_NAME(SCD_QUEUE_CFG),
0429     HCMD_NAME(TXPATH_FLUSH),
0430     HCMD_NAME(MGMT_MCAST_KEY),
0431     HCMD_NAME(WEP_KEY),
0432     HCMD_NAME(SHARED_MEM_CFG),
0433     HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
0434     HCMD_NAME(MAC_CONTEXT_CMD),
0435     HCMD_NAME(TIME_EVENT_CMD),
0436     HCMD_NAME(TIME_EVENT_NOTIFICATION),
0437     HCMD_NAME(BINDING_CONTEXT_CMD),
0438     HCMD_NAME(TIME_QUOTA_CMD),
0439     HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
0440     HCMD_NAME(LEDS_CMD),
0441     HCMD_NAME(LQ_CMD),
0442     HCMD_NAME(FW_PAGING_BLOCK_CMD),
0443     HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
0444     HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
0445     HCMD_NAME(HOT_SPOT_CMD),
0446     HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
0447     HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
0448     HCMD_NAME(BT_COEX_CI),
0449     HCMD_NAME(PHY_CONFIGURATION_CMD),
0450     HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
0451     HCMD_NAME(PHY_DB_CMD),
0452     HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
0453     HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
0454     HCMD_NAME(POWER_TABLE_CMD),
0455     HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
0456     HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
0457     HCMD_NAME(NVM_ACCESS_CMD),
0458     HCMD_NAME(BEACON_NOTIFICATION),
0459     HCMD_NAME(BEACON_TEMPLATE_CMD),
0460     HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
0461     HCMD_NAME(BT_CONFIG),
0462     HCMD_NAME(STATISTICS_CMD),
0463     HCMD_NAME(STATISTICS_NOTIFICATION),
0464     HCMD_NAME(EOSP_NOTIFICATION),
0465     HCMD_NAME(REDUCE_TX_POWER_CMD),
0466     HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
0467     HCMD_NAME(TDLS_CONFIG_CMD),
0468     HCMD_NAME(MAC_PM_POWER_TABLE),
0469     HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
0470     HCMD_NAME(MFUART_LOAD_NOTIFICATION),
0471     HCMD_NAME(RSS_CONFIG_CMD),
0472     HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
0473     HCMD_NAME(REPLY_RX_PHY_CMD),
0474     HCMD_NAME(REPLY_RX_MPDU_CMD),
0475     HCMD_NAME(BAR_FRAME_RELEASE),
0476     HCMD_NAME(FRAME_RELEASE),
0477     HCMD_NAME(BA_NOTIF),
0478     HCMD_NAME(MCC_UPDATE_CMD),
0479     HCMD_NAME(MCC_CHUB_UPDATE_CMD),
0480     HCMD_NAME(MARKER_CMD),
0481     HCMD_NAME(BT_PROFILE_NOTIFICATION),
0482     HCMD_NAME(MCAST_FILTER_CMD),
0483     HCMD_NAME(REPLY_SF_CFG_CMD),
0484     HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
0485     HCMD_NAME(D3_CONFIG_CMD),
0486     HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
0487     HCMD_NAME(OFFLOADS_QUERY_CMD),
0488     HCMD_NAME(MATCH_FOUND_NOTIFICATION),
0489     HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
0490     HCMD_NAME(WOWLAN_PATTERNS),
0491     HCMD_NAME(WOWLAN_CONFIGURATION),
0492     HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
0493     HCMD_NAME(WOWLAN_TKIP_PARAM),
0494     HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
0495     HCMD_NAME(WOWLAN_GET_STATUSES),
0496     HCMD_NAME(SCAN_ITERATION_COMPLETE),
0497     HCMD_NAME(D0I3_END_CMD),
0498     HCMD_NAME(LTR_CONFIG),
0499     HCMD_NAME(LDBG_CONFIG_CMD),
0500 };
0501 
0502 /* Please keep this array *SORTED* by hex value.
0503  * Access is done through binary search
0504  */
0505 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
0506     HCMD_NAME(SHARED_MEM_CFG_CMD),
0507     HCMD_NAME(INIT_EXTENDED_CFG_CMD),
0508     HCMD_NAME(FW_ERROR_RECOVERY_CMD),
0509     HCMD_NAME(RFI_CONFIG_CMD),
0510     HCMD_NAME(RFI_GET_FREQ_TABLE_CMD),
0511     HCMD_NAME(SYSTEM_FEATURES_CONTROL_CMD),
0512     HCMD_NAME(RFI_DEACTIVATE_NOTIF),
0513 };
0514 
0515 /* Please keep this array *SORTED* by hex value.
0516  * Access is done through binary search
0517  */
0518 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
0519     HCMD_NAME(CHANNEL_SWITCH_TIME_EVENT_CMD),
0520     HCMD_NAME(SESSION_PROTECTION_CMD),
0521     HCMD_NAME(SESSION_PROTECTION_NOTIF),
0522     HCMD_NAME(CHANNEL_SWITCH_START_NOTIF),
0523 };
0524 
0525 /* Please keep this array *SORTED* by hex value.
0526  * Access is done through binary search
0527  */
0528 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
0529     HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
0530     HCMD_NAME(CTDP_CONFIG_CMD),
0531     HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
0532     HCMD_NAME(PER_CHAIN_LIMIT_OFFSET_CMD),
0533     HCMD_NAME(CT_KILL_NOTIFICATION),
0534     HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
0535 };
0536 
0537 /* Please keep this array *SORTED* by hex value.
0538  * Access is done through binary search
0539  */
0540 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
0541     HCMD_NAME(DQA_ENABLE_CMD),
0542     HCMD_NAME(UPDATE_MU_GROUPS_CMD),
0543     HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
0544     HCMD_NAME(STA_HE_CTXT_CMD),
0545     HCMD_NAME(RLC_CONFIG_CMD),
0546     HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
0547     HCMD_NAME(TLC_MNG_CONFIG_CMD),
0548     HCMD_NAME(CHEST_COLLECTOR_FILTER_CONFIG_CMD),
0549     HCMD_NAME(SCD_QUEUE_CONFIG_CMD),
0550     HCMD_NAME(MONITOR_NOTIF),
0551     HCMD_NAME(THERMAL_DUAL_CHAIN_REQUEST),
0552     HCMD_NAME(STA_PM_NOTIF),
0553     HCMD_NAME(MU_GROUP_MGMT_NOTIF),
0554     HCMD_NAME(RX_QUEUES_NOTIFICATION),
0555 };
0556 
0557 /* Please keep this array *SORTED* by hex value.
0558  * Access is done through binary search
0559  */
0560 static const struct iwl_hcmd_names iwl_mvm_location_names[] = {
0561     HCMD_NAME(TOF_RANGE_REQ_CMD),
0562     HCMD_NAME(TOF_CONFIG_CMD),
0563     HCMD_NAME(TOF_RANGE_ABORT_CMD),
0564     HCMD_NAME(TOF_RANGE_REQ_EXT_CMD),
0565     HCMD_NAME(TOF_RESPONDER_CONFIG_CMD),
0566     HCMD_NAME(TOF_RESPONDER_DYN_CONFIG_CMD),
0567     HCMD_NAME(TOF_LC_NOTIF),
0568     HCMD_NAME(TOF_RESPONDER_STATS),
0569     HCMD_NAME(TOF_MCSI_DEBUG_NOTIF),
0570     HCMD_NAME(TOF_RANGE_RESPONSE_NOTIF),
0571 };
0572 
0573 /* Please keep this array *SORTED* by hex value.
0574  * Access is done through binary search
0575  */
0576 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
0577     HCMD_NAME(STORED_BEACON_NTF),
0578 };
0579 
0580 /* Please keep this array *SORTED* by hex value.
0581  * Access is done through binary search
0582  */
0583 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
0584     HCMD_NAME(NVM_ACCESS_COMPLETE),
0585     HCMD_NAME(NVM_GET_INFO),
0586     HCMD_NAME(TAS_CONFIG),
0587 };
0588 
0589 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
0590     [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
0591     [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
0592     [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
0593     [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
0594     [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
0595     [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
0596     [LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names),
0597     [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
0598     [REGULATORY_AND_NVM_GROUP] =
0599         HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
0600 };
0601 
0602 /* this forward declaration can avoid to export the function */
0603 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
0604 
0605 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
0606 {
0607     const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
0608     u64 dflt_pwr_limit;
0609 
0610     if (!backoff)
0611         return 0;
0612 
0613     dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
0614 
0615     while (backoff->pwr) {
0616         if (dflt_pwr_limit >= backoff->pwr)
0617             return backoff->backoff;
0618 
0619         backoff++;
0620     }
0621 
0622     return 0;
0623 }
0624 
0625 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
0626 {
0627     struct iwl_mvm *mvm =
0628         container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
0629     struct ieee80211_vif *tx_blocked_vif;
0630     struct iwl_mvm_vif *mvmvif;
0631 
0632     mutex_lock(&mvm->mutex);
0633 
0634     tx_blocked_vif =
0635         rcu_dereference_protected(mvm->csa_tx_blocked_vif,
0636                       lockdep_is_held(&mvm->mutex));
0637 
0638     if (!tx_blocked_vif)
0639         goto unlock;
0640 
0641     mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
0642     iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
0643     RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
0644 unlock:
0645     mutex_unlock(&mvm->mutex);
0646 }
0647 
0648 static void iwl_mvm_fwrt_dump_start(void *ctx)
0649 {
0650     struct iwl_mvm *mvm = ctx;
0651 
0652     mutex_lock(&mvm->mutex);
0653 }
0654 
0655 static void iwl_mvm_fwrt_dump_end(void *ctx)
0656 {
0657     struct iwl_mvm *mvm = ctx;
0658 
0659     mutex_unlock(&mvm->mutex);
0660 }
0661 
0662 static bool iwl_mvm_fwrt_fw_running(void *ctx)
0663 {
0664     return iwl_mvm_firmware_running(ctx);
0665 }
0666 
0667 static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd)
0668 {
0669     struct iwl_mvm *mvm = (struct iwl_mvm *)ctx;
0670     int ret;
0671 
0672     mutex_lock(&mvm->mutex);
0673     ret = iwl_mvm_send_cmd(mvm, host_cmd);
0674     mutex_unlock(&mvm->mutex);
0675 
0676     return ret;
0677 }
0678 
0679 static bool iwl_mvm_d3_debug_enable(void *ctx)
0680 {
0681     return IWL_MVM_D3_DEBUG;
0682 }
0683 
0684 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
0685     .dump_start = iwl_mvm_fwrt_dump_start,
0686     .dump_end = iwl_mvm_fwrt_dump_end,
0687     .fw_running = iwl_mvm_fwrt_fw_running,
0688     .send_hcmd = iwl_mvm_fwrt_send_hcmd,
0689     .d3_debug_enable = iwl_mvm_d3_debug_enable,
0690 };
0691 
0692 static int iwl_mvm_start_get_nvm(struct iwl_mvm *mvm)
0693 {
0694     struct iwl_trans *trans = mvm->trans;
0695     int ret;
0696 
0697     if (trans->csme_own) {
0698         if (WARN(!mvm->mei_registered,
0699              "csme is owner, but we aren't registered to iwlmei\n"))
0700             goto get_nvm_from_fw;
0701 
0702         mvm->mei_nvm_data = iwl_mei_get_nvm();
0703         if (mvm->mei_nvm_data) {
0704             /*
0705              * mvm->mei_nvm_data is set and because of that,
0706              * we'll load the NVM from the FW when we'll get
0707              * ownership.
0708              */
0709             mvm->nvm_data =
0710                 iwl_parse_mei_nvm_data(trans, trans->cfg,
0711                                mvm->mei_nvm_data, mvm->fw);
0712             return 0;
0713         }
0714 
0715         IWL_ERR(mvm,
0716             "Got a NULL NVM from CSME, trying to get it from the device\n");
0717     }
0718 
0719 get_nvm_from_fw:
0720     rtnl_lock();
0721     wiphy_lock(mvm->hw->wiphy);
0722     mutex_lock(&mvm->mutex);
0723 
0724     ret = iwl_trans_start_hw(mvm->trans);
0725     if (ret) {
0726         mutex_unlock(&mvm->mutex);
0727         wiphy_unlock(mvm->hw->wiphy);
0728         rtnl_unlock();
0729         return ret;
0730     }
0731 
0732     ret = iwl_run_init_mvm_ucode(mvm);
0733     if (ret && ret != -ERFKILL)
0734         iwl_fw_dbg_error_collect(&mvm->fwrt, FW_DBG_TRIGGER_DRIVER);
0735     if (!ret && iwl_mvm_is_lar_supported(mvm)) {
0736         mvm->hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
0737         ret = iwl_mvm_init_mcc(mvm);
0738     }
0739 
0740     if (!iwlmvm_mod_params.init_dbg || !ret)
0741         iwl_mvm_stop_device(mvm);
0742 
0743     mutex_unlock(&mvm->mutex);
0744     wiphy_unlock(mvm->hw->wiphy);
0745     rtnl_unlock();
0746 
0747     if (ret)
0748         IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
0749 
0750     return ret;
0751 }
0752 
0753 static int iwl_mvm_start_post_nvm(struct iwl_mvm *mvm)
0754 {
0755     struct iwl_mvm_csme_conn_info *csme_conn_info __maybe_unused;
0756     int ret;
0757 
0758     iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
0759 
0760     ret = iwl_mvm_mac_setup_register(mvm);
0761     if (ret)
0762         return ret;
0763 
0764     mvm->hw_registered = true;
0765 
0766     iwl_mvm_dbgfs_register(mvm);
0767 
0768     wiphy_rfkill_set_hw_state_reason(mvm->hw->wiphy,
0769                      mvm->mei_rfkill_blocked,
0770                      RFKILL_HARD_BLOCK_NOT_OWNER);
0771 
0772     iwl_mvm_mei_set_sw_rfkill_state(mvm);
0773 
0774     return 0;
0775 }
0776 
0777 struct iwl_mvm_frob_txf_data {
0778     u8 *buf;
0779     size_t buflen;
0780 };
0781 
0782 static void iwl_mvm_frob_txf_key_iter(struct ieee80211_hw *hw,
0783                       struct ieee80211_vif *vif,
0784                       struct ieee80211_sta *sta,
0785                       struct ieee80211_key_conf *key,
0786                       void *data)
0787 {
0788     struct iwl_mvm_frob_txf_data *txf = data;
0789     u8 keylen, match, matchend;
0790     u8 *keydata;
0791     size_t i;
0792 
0793     switch (key->cipher) {
0794     case WLAN_CIPHER_SUITE_CCMP:
0795         keydata = key->key;
0796         keylen = key->keylen;
0797         break;
0798     case WLAN_CIPHER_SUITE_WEP40:
0799     case WLAN_CIPHER_SUITE_WEP104:
0800     case WLAN_CIPHER_SUITE_TKIP:
0801         /*
0802          * WEP has short keys which might show up in the payload,
0803          * and then you can deduce the key, so in this case just
0804          * remove all FIFO data.
0805          * For TKIP, we don't know the phase 2 keys here, so same.
0806          */
0807         memset(txf->buf, 0xBB, txf->buflen);
0808         return;
0809     default:
0810         return;
0811     }
0812 
0813     /* scan for key material and clear it out */
0814     match = 0;
0815     for (i = 0; i < txf->buflen; i++) {
0816         if (txf->buf[i] != keydata[match]) {
0817             match = 0;
0818             continue;
0819         }
0820         match++;
0821         if (match == keylen) {
0822             memset(txf->buf + i - keylen, 0xAA, keylen);
0823             match = 0;
0824         }
0825     }
0826 
0827     /* we're dealing with a FIFO, so check wrapped around data */
0828     matchend = match;
0829     for (i = 0; match && i < keylen - match; i++) {
0830         if (txf->buf[i] != keydata[match])
0831             break;
0832         match++;
0833         if (match == keylen) {
0834             memset(txf->buf, 0xAA, i + 1);
0835             memset(txf->buf + txf->buflen - matchend, 0xAA,
0836                    matchend);
0837             break;
0838         }
0839     }
0840 }
0841 
0842 static void iwl_mvm_frob_txf(void *ctx, void *buf, size_t buflen)
0843 {
0844     struct iwl_mvm_frob_txf_data txf = {
0845         .buf = buf,
0846         .buflen = buflen,
0847     };
0848     struct iwl_mvm *mvm = ctx;
0849 
0850     /* embedded key material exists only on old API */
0851     if (iwl_mvm_has_new_tx_api(mvm))
0852         return;
0853 
0854     rcu_read_lock();
0855     ieee80211_iter_keys_rcu(mvm->hw, NULL, iwl_mvm_frob_txf_key_iter, &txf);
0856     rcu_read_unlock();
0857 }
0858 
0859 static void iwl_mvm_frob_hcmd(void *ctx, void *hcmd, size_t len)
0860 {
0861     /* we only use wide headers for commands */
0862     struct iwl_cmd_header_wide *hdr = hcmd;
0863     unsigned int frob_start = sizeof(*hdr), frob_end = 0;
0864 
0865     if (len < sizeof(hdr))
0866         return;
0867 
0868     /* all the commands we care about are in LONG_GROUP */
0869     if (hdr->group_id != LONG_GROUP)
0870         return;
0871 
0872     switch (hdr->cmd) {
0873     case WEP_KEY:
0874     case WOWLAN_TKIP_PARAM:
0875     case WOWLAN_KEK_KCK_MATERIAL:
0876     case ADD_STA_KEY:
0877         /*
0878          * blank out everything here, easier than dealing
0879          * with the various versions of the command
0880          */
0881         frob_end = INT_MAX;
0882         break;
0883     case MGMT_MCAST_KEY:
0884         frob_start = offsetof(struct iwl_mvm_mgmt_mcast_key_cmd, igtk);
0885         BUILD_BUG_ON(offsetof(struct iwl_mvm_mgmt_mcast_key_cmd, igtk) !=
0886                  offsetof(struct iwl_mvm_mgmt_mcast_key_cmd_v1, igtk));
0887 
0888         frob_end = offsetofend(struct iwl_mvm_mgmt_mcast_key_cmd, igtk);
0889         BUILD_BUG_ON(offsetof(struct iwl_mvm_mgmt_mcast_key_cmd, igtk) <
0890                  offsetof(struct iwl_mvm_mgmt_mcast_key_cmd_v1, igtk));
0891         break;
0892     }
0893 
0894     if (frob_start >= frob_end)
0895         return;
0896 
0897     if (frob_end > len)
0898         frob_end = len;
0899 
0900     memset((u8 *)hcmd + frob_start, 0xAA, frob_end - frob_start);
0901 }
0902 
0903 static void iwl_mvm_frob_mem(void *ctx, u32 mem_addr, void *mem, size_t buflen)
0904 {
0905     const struct iwl_dump_exclude *excl;
0906     struct iwl_mvm *mvm = ctx;
0907     int i;
0908 
0909     switch (mvm->fwrt.cur_fw_img) {
0910     case IWL_UCODE_INIT:
0911     default:
0912         /* not relevant */
0913         return;
0914     case IWL_UCODE_REGULAR:
0915     case IWL_UCODE_REGULAR_USNIFFER:
0916         excl = mvm->fw->dump_excl;
0917         break;
0918     case IWL_UCODE_WOWLAN:
0919         excl = mvm->fw->dump_excl_wowlan;
0920         break;
0921     }
0922 
0923     BUILD_BUG_ON(sizeof(mvm->fw->dump_excl) !=
0924              sizeof(mvm->fw->dump_excl_wowlan));
0925 
0926     for (i = 0; i < ARRAY_SIZE(mvm->fw->dump_excl); i++) {
0927         u32 start, end;
0928 
0929         if (!excl[i].addr || !excl[i].size)
0930             continue;
0931 
0932         start = excl[i].addr;
0933         end = start + excl[i].size;
0934 
0935         if (end <= mem_addr || start >= mem_addr + buflen)
0936             continue;
0937 
0938         if (start < mem_addr)
0939             start = mem_addr;
0940 
0941         if (end > mem_addr + buflen)
0942             end = mem_addr + buflen;
0943 
0944         memset((u8 *)mem + start - mem_addr, 0xAA, end - start);
0945     }
0946 }
0947 
0948 static const struct iwl_dump_sanitize_ops iwl_mvm_sanitize_ops = {
0949     .frob_txf = iwl_mvm_frob_txf,
0950     .frob_hcmd = iwl_mvm_frob_hcmd,
0951     .frob_mem = iwl_mvm_frob_mem,
0952 };
0953 
0954 static void iwl_mvm_me_conn_status(void *priv, const struct iwl_mei_conn_info *conn_info)
0955 {
0956     struct iwl_mvm *mvm = priv;
0957     struct iwl_mvm_csme_conn_info *prev_conn_info, *curr_conn_info;
0958 
0959     /*
0960      * This is protected by the guarantee that this function will not be
0961      * called twice on two different threads
0962      */
0963     prev_conn_info = rcu_dereference_protected(mvm->csme_conn_info, true);
0964 
0965     curr_conn_info = kzalloc(sizeof(*curr_conn_info), GFP_KERNEL);
0966     if (!curr_conn_info)
0967         return;
0968 
0969     curr_conn_info->conn_info = *conn_info;
0970 
0971     rcu_assign_pointer(mvm->csme_conn_info, curr_conn_info);
0972 
0973     if (prev_conn_info)
0974         kfree_rcu(prev_conn_info, rcu_head);
0975 }
0976 
0977 static void iwl_mvm_mei_rfkill(void *priv, bool blocked)
0978 {
0979     struct iwl_mvm *mvm = priv;
0980 
0981     mvm->mei_rfkill_blocked = blocked;
0982     if (!mvm->hw_registered)
0983         return;
0984 
0985     wiphy_rfkill_set_hw_state_reason(mvm->hw->wiphy,
0986                      mvm->mei_rfkill_blocked,
0987                      RFKILL_HARD_BLOCK_NOT_OWNER);
0988 }
0989 
0990 static void iwl_mvm_mei_roaming_forbidden(void *priv, bool forbidden)
0991 {
0992     struct iwl_mvm *mvm = priv;
0993 
0994     if (!mvm->hw_registered || !mvm->csme_vif)
0995         return;
0996 
0997     iwl_mvm_send_roaming_forbidden_event(mvm, mvm->csme_vif, forbidden);
0998 }
0999 
1000 static void iwl_mvm_sap_connected_wk(struct work_struct *wk)
1001 {
1002     struct iwl_mvm *mvm =
1003         container_of(wk, struct iwl_mvm, sap_connected_wk);
1004     int ret;
1005 
1006     ret = iwl_mvm_start_get_nvm(mvm);
1007     if (ret)
1008         goto out_free;
1009 
1010     ret = iwl_mvm_start_post_nvm(mvm);
1011     if (ret)
1012         goto out_free;
1013 
1014     return;
1015 
1016 out_free:
1017     IWL_ERR(mvm, "Couldn't get started...\n");
1018     iwl_mei_start_unregister();
1019     iwl_mei_unregister_complete();
1020     iwl_fw_flush_dumps(&mvm->fwrt);
1021     iwl_mvm_thermal_exit(mvm);
1022     iwl_fw_runtime_free(&mvm->fwrt);
1023     iwl_phy_db_free(mvm->phy_db);
1024     kfree(mvm->scan_cmd);
1025     iwl_trans_op_mode_leave(mvm->trans);
1026     kfree(mvm->nvm_data);
1027     kfree(mvm->mei_nvm_data);
1028 
1029     ieee80211_free_hw(mvm->hw);
1030 }
1031 
1032 static void iwl_mvm_mei_sap_connected(void *priv)
1033 {
1034     struct iwl_mvm *mvm = priv;
1035 
1036     if (!mvm->hw_registered)
1037         schedule_work(&mvm->sap_connected_wk);
1038 }
1039 
1040 static void iwl_mvm_mei_nic_stolen(void *priv)
1041 {
1042     struct iwl_mvm *mvm = priv;
1043 
1044     rtnl_lock();
1045     cfg80211_shutdown_all_interfaces(mvm->hw->wiphy);
1046     rtnl_unlock();
1047 }
1048 
1049 static const struct iwl_mei_ops mei_ops = {
1050     .me_conn_status = iwl_mvm_me_conn_status,
1051     .rfkill = iwl_mvm_mei_rfkill,
1052     .roaming_forbidden = iwl_mvm_mei_roaming_forbidden,
1053     .sap_connected = iwl_mvm_mei_sap_connected,
1054     .nic_stolen = iwl_mvm_mei_nic_stolen,
1055 };
1056 
1057 static struct iwl_op_mode *
1058 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
1059               const struct iwl_fw *fw, struct dentry *dbgfs_dir)
1060 {
1061     struct ieee80211_hw *hw;
1062     struct iwl_op_mode *op_mode;
1063     struct iwl_mvm *mvm;
1064     struct iwl_trans_config trans_cfg = {};
1065     static const u8 no_reclaim_cmds[] = {
1066         TX_CMD,
1067     };
1068     int scan_size;
1069     u32 min_backoff;
1070     struct iwl_mvm_csme_conn_info *csme_conn_info __maybe_unused;
1071 
1072     /*
1073      * We use IWL_MVM_STATION_COUNT_MAX to check the validity of the station
1074      * index all over the driver - check that its value corresponds to the
1075      * array size.
1076      */
1077     BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) !=
1078              IWL_MVM_STATION_COUNT_MAX);
1079 
1080     /********************************
1081      * 1. Allocating and configuring HW data
1082      ********************************/
1083     hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
1084                 sizeof(struct iwl_mvm),
1085                 &iwl_mvm_hw_ops);
1086     if (!hw)
1087         return NULL;
1088 
1089     hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE;
1090 
1091     if (cfg->max_tx_agg_size)
1092         hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
1093     else
1094         hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE;
1095 
1096     op_mode = hw->priv;
1097 
1098     mvm = IWL_OP_MODE_GET_MVM(op_mode);
1099     mvm->dev = trans->dev;
1100     mvm->trans = trans;
1101     mvm->cfg = cfg;
1102     mvm->fw = fw;
1103     mvm->hw = hw;
1104 
1105     iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
1106                 &iwl_mvm_sanitize_ops, mvm, dbgfs_dir);
1107 
1108     iwl_mvm_get_acpi_tables(mvm);
1109     iwl_uefi_get_sgom_table(trans, &mvm->fwrt);
1110 
1111     mvm->init_status = 0;
1112 
1113     if (iwl_mvm_has_new_rx_api(mvm)) {
1114         op_mode->ops = &iwl_mvm_ops_mq;
1115         trans->rx_mpdu_cmd_hdr_size =
1116             (trans->trans_cfg->device_family >=
1117              IWL_DEVICE_FAMILY_AX210) ?
1118             sizeof(struct iwl_rx_mpdu_desc) :
1119             IWL_RX_DESC_SIZE_V1;
1120     } else {
1121         op_mode->ops = &iwl_mvm_ops;
1122         trans->rx_mpdu_cmd_hdr_size =
1123             sizeof(struct iwl_rx_mpdu_res_start);
1124 
1125         if (WARN_ON(trans->num_rx_queues > 1))
1126             goto out_free;
1127     }
1128 
1129     mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
1130 
1131     if (iwl_mvm_has_new_tx_api(mvm)) {
1132         /*
1133          * If we have the new TX/queue allocation API initialize them
1134          * all to invalid numbers. We'll rewrite the ones that we need
1135          * later, but that doesn't happen for all of them all of the
1136          * time (e.g. P2P Device is optional), and if a dynamic queue
1137          * ends up getting number 2 (IWL_MVM_DQA_P2P_DEVICE_QUEUE) then
1138          * iwl_mvm_is_static_queue() erroneously returns true, and we
1139          * might have things getting stuck.
1140          */
1141         mvm->aux_queue = IWL_MVM_INVALID_QUEUE;
1142         mvm->snif_queue = IWL_MVM_INVALID_QUEUE;
1143         mvm->probe_queue = IWL_MVM_INVALID_QUEUE;
1144         mvm->p2p_dev_queue = IWL_MVM_INVALID_QUEUE;
1145     } else {
1146         mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
1147         mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
1148         mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
1149         mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
1150     }
1151 
1152     mvm->sf_state = SF_UNINIT;
1153     if (iwl_mvm_has_unified_ucode(mvm))
1154         iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
1155     else
1156         iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
1157     mvm->drop_bcn_ap_mode = true;
1158 
1159     mutex_init(&mvm->mutex);
1160     spin_lock_init(&mvm->async_handlers_lock);
1161     INIT_LIST_HEAD(&mvm->time_event_list);
1162     INIT_LIST_HEAD(&mvm->aux_roc_te_list);
1163     INIT_LIST_HEAD(&mvm->async_handlers_list);
1164     spin_lock_init(&mvm->time_event_lock);
1165     INIT_LIST_HEAD(&mvm->ftm_initiator.loc_list);
1166     INIT_LIST_HEAD(&mvm->ftm_initiator.pasn_list);
1167     INIT_LIST_HEAD(&mvm->resp_pasn_list);
1168 
1169     INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
1170     INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
1171     INIT_WORK(&mvm->sap_connected_wk, iwl_mvm_sap_connected_wk);
1172     INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
1173     INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
1174     INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
1175     INIT_LIST_HEAD(&mvm->add_stream_txqs);
1176 
1177     init_waitqueue_head(&mvm->rx_sync_waitq);
1178 
1179     mvm->queue_sync_state = 0;
1180 
1181     SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
1182 
1183     spin_lock_init(&mvm->tcm.lock);
1184     INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
1185     mvm->tcm.ts = jiffies;
1186     mvm->tcm.ll_ts = jiffies;
1187     mvm->tcm.uapsd_nonagg_ts = jiffies;
1188 
1189     INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
1190 
1191     mvm->cmd_ver.d0i3_resp =
1192         iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, D0I3_END_CMD,
1193                     0);
1194     /* we only support version 1 */
1195     if (WARN_ON_ONCE(mvm->cmd_ver.d0i3_resp > 1))
1196         goto out_free;
1197 
1198     mvm->cmd_ver.range_resp =
1199         iwl_fw_lookup_notif_ver(mvm->fw, LOCATION_GROUP,
1200                     TOF_RANGE_RESPONSE_NOTIF, 5);
1201     /* we only support up to version 9 */
1202     if (WARN_ON_ONCE(mvm->cmd_ver.range_resp > 9))
1203         goto out_free;
1204 
1205     /*
1206      * Populate the state variables that the transport layer needs
1207      * to know about.
1208      */
1209     trans_cfg.op_mode = op_mode;
1210     trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1211     trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1212 
1213     switch (iwlwifi_mod_params.amsdu_size) {
1214     case IWL_AMSDU_DEF:
1215         trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1216         break;
1217     case IWL_AMSDU_4K:
1218         trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1219         break;
1220     case IWL_AMSDU_8K:
1221         trans_cfg.rx_buf_size = IWL_AMSDU_8K;
1222         break;
1223     case IWL_AMSDU_12K:
1224         trans_cfg.rx_buf_size = IWL_AMSDU_12K;
1225         break;
1226     default:
1227         pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
1228                iwlwifi_mod_params.amsdu_size);
1229         trans_cfg.rx_buf_size = IWL_AMSDU_4K;
1230     }
1231 
1232     trans->wide_cmd_header = true;
1233     trans_cfg.bc_table_dword =
1234         mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210;
1235 
1236     trans_cfg.command_groups = iwl_mvm_groups;
1237     trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
1238 
1239     trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
1240     trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
1241     trans_cfg.scd_set_active = true;
1242 
1243     trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
1244                       driver_data[2]);
1245 
1246     /* Set a short watchdog for the command queue */
1247     trans_cfg.cmd_q_wdg_timeout =
1248         iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
1249 
1250     snprintf(mvm->hw->wiphy->fw_version,
1251          sizeof(mvm->hw->wiphy->fw_version),
1252          "%s", fw->fw_version);
1253 
1254     trans_cfg.fw_reset_handshake = fw_has_capa(&mvm->fw->ucode_capa,
1255                            IWL_UCODE_TLV_CAPA_FW_RESET_HANDSHAKE);
1256 
1257     trans_cfg.queue_alloc_cmd_ver =
1258         iwl_fw_lookup_cmd_ver(mvm->fw,
1259                       WIDE_ID(DATA_PATH_GROUP,
1260                           SCD_QUEUE_CONFIG_CMD),
1261                       0);
1262     mvm->sta_remove_requires_queue_remove =
1263         trans_cfg.queue_alloc_cmd_ver > 0;
1264 
1265     /* Configure transport layer */
1266     iwl_trans_configure(mvm->trans, &trans_cfg);
1267 
1268     trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1269     trans->dbg.dest_tlv = mvm->fw->dbg.dest_tlv;
1270     trans->dbg.n_dest_reg = mvm->fw->dbg.n_dest_reg;
1271     memcpy(trans->dbg.conf_tlv, mvm->fw->dbg.conf_tlv,
1272            sizeof(trans->dbg.conf_tlv));
1273     trans->dbg.trigger_tlv = mvm->fw->dbg.trigger_tlv;
1274 
1275     trans->iml = mvm->fw->iml;
1276     trans->iml_len = mvm->fw->iml_len;
1277 
1278     /* set up notification wait support */
1279     iwl_notification_wait_init(&mvm->notif_wait);
1280 
1281     /* Init phy db */
1282     mvm->phy_db = iwl_phy_db_init(trans);
1283     if (!mvm->phy_db) {
1284         IWL_ERR(mvm, "Cannot init phy_db\n");
1285         goto out_free;
1286     }
1287 
1288     IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
1289          mvm->trans->name, mvm->trans->hw_rev);
1290 
1291     if (iwlwifi_mod_params.nvm_file)
1292         mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
1293     else
1294         IWL_DEBUG_EEPROM(mvm->trans->dev,
1295                  "working without external nvm file\n");
1296 
1297     scan_size = iwl_mvm_scan_size(mvm);
1298 
1299     mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
1300     if (!mvm->scan_cmd)
1301         goto out_free;
1302 
1303     /* invalidate ids to prevent accidental removal of sta_id 0 */
1304     mvm->aux_sta.sta_id = IWL_MVM_INVALID_STA;
1305     mvm->snif_sta.sta_id = IWL_MVM_INVALID_STA;
1306 
1307     /* Set EBS as successful as long as not stated otherwise by the FW. */
1308     mvm->last_ebs_successful = true;
1309 
1310     min_backoff = iwl_mvm_min_backoff(mvm);
1311     iwl_mvm_thermal_initialize(mvm, min_backoff);
1312 
1313     if (!iwl_mvm_has_new_rx_stats_api(mvm))
1314         memset(&mvm->rx_stats_v3, 0,
1315                sizeof(struct mvm_statistics_rx_v3));
1316     else
1317         memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
1318 
1319     mvm->debugfs_dir = dbgfs_dir;
1320 
1321     mvm->mei_registered = !iwl_mei_register(mvm, &mei_ops);
1322 
1323     if (iwl_mvm_start_get_nvm(mvm)) {
1324         /*
1325          * Getting NVM failed while CSME is the owner, but we are
1326          * registered to MEI, we'll get the NVM later when it'll be
1327          * possible to get it from CSME.
1328          */
1329         if (trans->csme_own && mvm->mei_registered)
1330             return op_mode;
1331 
1332         goto out_thermal_exit;
1333     }
1334 
1335 
1336     if (iwl_mvm_start_post_nvm(mvm))
1337         goto out_thermal_exit;
1338 
1339     return op_mode;
1340 
1341  out_thermal_exit:
1342     iwl_mvm_thermal_exit(mvm);
1343     if (mvm->mei_registered) {
1344         iwl_mei_start_unregister();
1345         iwl_mei_unregister_complete();
1346     }
1347  out_free:
1348     iwl_fw_flush_dumps(&mvm->fwrt);
1349     iwl_fw_runtime_free(&mvm->fwrt);
1350 
1351     if (iwlmvm_mod_params.init_dbg)
1352         return op_mode;
1353     iwl_phy_db_free(mvm->phy_db);
1354     kfree(mvm->scan_cmd);
1355     iwl_trans_op_mode_leave(trans);
1356 
1357     ieee80211_free_hw(mvm->hw);
1358     return NULL;
1359 }
1360 
1361 void iwl_mvm_stop_device(struct iwl_mvm *mvm)
1362 {
1363     lockdep_assert_held(&mvm->mutex);
1364 
1365     iwl_fw_cancel_timestamp(&mvm->fwrt);
1366 
1367     clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1368 
1369     iwl_fw_dbg_stop_sync(&mvm->fwrt);
1370     iwl_trans_stop_device(mvm->trans);
1371     iwl_free_fw_paging(&mvm->fwrt);
1372     iwl_fw_dump_conf_clear(&mvm->fwrt);
1373     iwl_mvm_mei_device_down(mvm);
1374 }
1375 
1376 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
1377 {
1378     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1379     int i;
1380 
1381     if (mvm->mei_registered) {
1382         rtnl_lock();
1383         iwl_mei_set_netdev(NULL);
1384         rtnl_unlock();
1385         iwl_mei_start_unregister();
1386     }
1387 
1388     /*
1389      * After we unregister from mei, the worker can't be scheduled
1390      * anymore.
1391      */
1392     cancel_work_sync(&mvm->sap_connected_wk);
1393 
1394     iwl_mvm_leds_exit(mvm);
1395 
1396     iwl_mvm_thermal_exit(mvm);
1397 
1398     /*
1399      * If we couldn't get ownership on the device and we couldn't
1400      * get the NVM from CSME, we haven't registered to mac80211.
1401      * In that case, we didn't fail op_mode_start, because we are
1402      * waiting for CSME to allow us to get the NVM to register to
1403      * mac80211. If that didn't happen, we haven't registered to
1404      * mac80211, hence the if below.
1405      */
1406     if (mvm->hw_registered)
1407         ieee80211_unregister_hw(mvm->hw);
1408 
1409     kfree(mvm->scan_cmd);
1410     kfree(mvm->mcast_filter_cmd);
1411     mvm->mcast_filter_cmd = NULL;
1412 
1413     kfree(mvm->error_recovery_buf);
1414     mvm->error_recovery_buf = NULL;
1415 
1416     iwl_trans_op_mode_leave(mvm->trans);
1417 
1418     iwl_phy_db_free(mvm->phy_db);
1419     mvm->phy_db = NULL;
1420 
1421     kfree(mvm->nvm_data);
1422     kfree(mvm->mei_nvm_data);
1423     kfree(rcu_access_pointer(mvm->csme_conn_info));
1424     kfree(mvm->temp_nvm_data);
1425     for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
1426         kfree(mvm->nvm_sections[i].data);
1427 
1428     cancel_delayed_work_sync(&mvm->tcm.work);
1429 
1430     iwl_fw_runtime_free(&mvm->fwrt);
1431     mutex_destroy(&mvm->mutex);
1432 
1433     if (mvm->mei_registered)
1434         iwl_mei_unregister_complete();
1435 
1436     ieee80211_free_hw(mvm->hw);
1437 }
1438 
1439 struct iwl_async_handler_entry {
1440     struct list_head list;
1441     struct iwl_rx_cmd_buffer rxb;
1442     enum iwl_rx_handler_context context;
1443     void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
1444 };
1445 
1446 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
1447 {
1448     struct iwl_async_handler_entry *entry, *tmp;
1449 
1450     spin_lock_bh(&mvm->async_handlers_lock);
1451     list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
1452         iwl_free_rxb(&entry->rxb);
1453         list_del(&entry->list);
1454         kfree(entry);
1455     }
1456     spin_unlock_bh(&mvm->async_handlers_lock);
1457 }
1458 
1459 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
1460 {
1461     struct iwl_mvm *mvm =
1462         container_of(wk, struct iwl_mvm, async_handlers_wk);
1463     struct iwl_async_handler_entry *entry, *tmp;
1464     LIST_HEAD(local_list);
1465 
1466     /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
1467 
1468     /*
1469      * Sync with Rx path with a lock. Remove all the entries from this list,
1470      * add them to a local one (lock free), and then handle them.
1471      */
1472     spin_lock_bh(&mvm->async_handlers_lock);
1473     list_splice_init(&mvm->async_handlers_list, &local_list);
1474     spin_unlock_bh(&mvm->async_handlers_lock);
1475 
1476     list_for_each_entry_safe(entry, tmp, &local_list, list) {
1477         if (entry->context == RX_HANDLER_ASYNC_LOCKED)
1478             mutex_lock(&mvm->mutex);
1479         entry->fn(mvm, &entry->rxb);
1480         iwl_free_rxb(&entry->rxb);
1481         list_del(&entry->list);
1482         if (entry->context == RX_HANDLER_ASYNC_LOCKED)
1483             mutex_unlock(&mvm->mutex);
1484         kfree(entry);
1485     }
1486 }
1487 
1488 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
1489                         struct iwl_rx_packet *pkt)
1490 {
1491     struct iwl_fw_dbg_trigger_tlv *trig;
1492     struct iwl_fw_dbg_trigger_cmd *cmds_trig;
1493     int i;
1494 
1495     trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
1496                      FW_DBG_TRIGGER_FW_NOTIF);
1497     if (!trig)
1498         return;
1499 
1500     cmds_trig = (void *)trig->data;
1501 
1502     for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
1503         /* don't collect on CMD 0 */
1504         if (!cmds_trig->cmds[i].cmd_id)
1505             break;
1506 
1507         if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
1508             cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
1509             continue;
1510 
1511         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1512                     "CMD 0x%02x.%02x received",
1513                     pkt->hdr.group_id, pkt->hdr.cmd);
1514         break;
1515     }
1516 }
1517 
1518 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
1519                   struct iwl_rx_cmd_buffer *rxb,
1520                   struct iwl_rx_packet *pkt)
1521 {
1522     unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1523     int i;
1524     union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1525 
1526     iwl_dbg_tlv_time_point(&mvm->fwrt,
1527                    IWL_FW_INI_TIME_POINT_FW_RSP_OR_NOTIF, &tp_data);
1528     iwl_mvm_rx_check_trigger(mvm, pkt);
1529 
1530     /*
1531      * Do the notification wait before RX handlers so
1532      * even if the RX handler consumes the RXB we have
1533      * access to it in the notification wait entry.
1534      */
1535     iwl_notification_wait_notify(&mvm->notif_wait, pkt);
1536 
1537     for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
1538         const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
1539         struct iwl_async_handler_entry *entry;
1540 
1541         if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1542             continue;
1543 
1544         if (unlikely(pkt_len < rx_h->min_size))
1545             return;
1546 
1547         if (rx_h->context == RX_HANDLER_SYNC) {
1548             rx_h->fn(mvm, rxb);
1549             return;
1550         }
1551 
1552         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1553         /* we can't do much... */
1554         if (!entry)
1555             return;
1556 
1557         entry->rxb._page = rxb_steal_page(rxb);
1558         entry->rxb._offset = rxb->_offset;
1559         entry->rxb._rx_page_order = rxb->_rx_page_order;
1560         entry->fn = rx_h->fn;
1561         entry->context = rx_h->context;
1562         spin_lock(&mvm->async_handlers_lock);
1563         list_add_tail(&entry->list, &mvm->async_handlers_list);
1564         spin_unlock(&mvm->async_handlers_lock);
1565         schedule_work(&mvm->async_handlers_wk);
1566         break;
1567     }
1568 }
1569 
1570 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1571                struct napi_struct *napi,
1572                struct iwl_rx_cmd_buffer *rxb)
1573 {
1574     struct iwl_rx_packet *pkt = rxb_addr(rxb);
1575     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1576     u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1577 
1578     if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1579         iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1580     else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1581         iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1582     else
1583         iwl_mvm_rx_common(mvm, rxb, pkt);
1584 }
1585 
1586 void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1587            struct napi_struct *napi,
1588            struct iwl_rx_cmd_buffer *rxb)
1589 {
1590     struct iwl_rx_packet *pkt = rxb_addr(rxb);
1591     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1592     u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1593 
1594     if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1595         iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1596     else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1597                      RX_QUEUES_NOTIFICATION)))
1598         iwl_mvm_rx_queue_notif(mvm, napi, rxb, 0);
1599     else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1600         iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1601     else if (cmd == WIDE_ID(LEGACY_GROUP, BAR_FRAME_RELEASE))
1602         iwl_mvm_rx_bar_frame_release(mvm, napi, rxb, 0);
1603     else if (cmd == WIDE_ID(DATA_PATH_GROUP, RX_NO_DATA_NOTIF))
1604         iwl_mvm_rx_monitor_no_data(mvm, napi, rxb, 0);
1605     else
1606         iwl_mvm_rx_common(mvm, rxb, pkt);
1607 }
1608 
1609 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1610                  const struct iwl_device_cmd *cmd)
1611 {
1612     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1613 
1614     /*
1615      * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1616      * commands that need to block the Tx queues.
1617      */
1618     iwl_trans_block_txq_ptrs(mvm->trans, false);
1619 }
1620 
1621 static int iwl_mvm_is_static_queue(struct iwl_mvm *mvm, int queue)
1622 {
1623     return queue == mvm->aux_queue || queue == mvm->probe_queue ||
1624         queue == mvm->p2p_dev_queue || queue == mvm->snif_queue;
1625 }
1626 
1627 static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode,
1628                        int hw_queue, bool start)
1629 {
1630     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1631     struct ieee80211_sta *sta;
1632     struct ieee80211_txq *txq;
1633     struct iwl_mvm_txq *mvmtxq;
1634     int i;
1635     unsigned long tid_bitmap;
1636     struct iwl_mvm_sta *mvmsta;
1637     u8 sta_id;
1638 
1639     sta_id = iwl_mvm_has_new_tx_api(mvm) ?
1640         mvm->tvqm_info[hw_queue].sta_id :
1641         mvm->queue_info[hw_queue].ra_sta_id;
1642 
1643     if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))
1644         return;
1645 
1646     rcu_read_lock();
1647 
1648     sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1649     if (IS_ERR_OR_NULL(sta))
1650         goto out;
1651     mvmsta = iwl_mvm_sta_from_mac80211(sta);
1652 
1653     if (iwl_mvm_is_static_queue(mvm, hw_queue)) {
1654         if (!start)
1655             ieee80211_stop_queues(mvm->hw);
1656         else if (mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1657             ieee80211_wake_queues(mvm->hw);
1658 
1659         goto out;
1660     }
1661 
1662     if (iwl_mvm_has_new_tx_api(mvm)) {
1663         int tid = mvm->tvqm_info[hw_queue].txq_tid;
1664 
1665         tid_bitmap = BIT(tid);
1666     } else {
1667         tid_bitmap = mvm->queue_info[hw_queue].tid_bitmap;
1668     }
1669 
1670     for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1671         int tid = i;
1672 
1673         if (tid == IWL_MAX_TID_COUNT)
1674             tid = IEEE80211_NUM_TIDS;
1675 
1676         txq = sta->txq[tid];
1677         mvmtxq = iwl_mvm_txq_from_mac80211(txq);
1678         mvmtxq->stopped = !start;
1679 
1680         if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST)
1681             iwl_mvm_mac_itxq_xmit(mvm->hw, txq);
1682     }
1683 
1684 out:
1685     rcu_read_unlock();
1686 }
1687 
1688 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1689 {
1690     iwl_mvm_queue_state_change(op_mode, hw_queue, false);
1691 }
1692 
1693 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1694 {
1695     iwl_mvm_queue_state_change(op_mode, hw_queue, true);
1696 }
1697 
1698 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1699 {
1700     bool state = iwl_mvm_is_radio_killed(mvm);
1701 
1702     if (state)
1703         wake_up(&mvm->rx_sync_waitq);
1704 
1705     wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1706 }
1707 
1708 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1709 {
1710     if (state)
1711         set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1712     else
1713         clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1714 
1715     iwl_mvm_set_rfkill_state(mvm);
1716 }
1717 
1718 struct iwl_mvm_csme_conn_info *iwl_mvm_get_csme_conn_info(struct iwl_mvm *mvm)
1719 {
1720     return rcu_dereference_protected(mvm->csme_conn_info,
1721                      lockdep_is_held(&mvm->mutex));
1722 }
1723 
1724 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1725 {
1726     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1727     bool rfkill_safe_init_done = READ_ONCE(mvm->rfkill_safe_init_done);
1728     bool unified = iwl_mvm_has_unified_ucode(mvm);
1729 
1730     if (state)
1731         set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1732     else
1733         clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1734 
1735     iwl_mvm_set_rfkill_state(mvm);
1736 
1737      /* iwl_run_init_mvm_ucode is waiting for results, abort it. */
1738     if (rfkill_safe_init_done)
1739         iwl_abort_notification_waits(&mvm->notif_wait);
1740 
1741     /*
1742      * Don't ask the transport to stop the firmware. We'll do it
1743      * after cfg80211 takes us down.
1744      */
1745     if (unified)
1746         return false;
1747 
1748     /*
1749      * Stop the device if we run OPERATIONAL firmware or if we are in the
1750      * middle of the calibrations.
1751      */
1752     return state && rfkill_safe_init_done;
1753 }
1754 
1755 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1756 {
1757     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1758     struct ieee80211_tx_info *info;
1759 
1760     info = IEEE80211_SKB_CB(skb);
1761     iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1762     ieee80211_free_txskb(mvm->hw, skb);
1763 }
1764 
1765 struct iwl_mvm_reprobe {
1766     struct device *dev;
1767     struct work_struct work;
1768 };
1769 
1770 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1771 {
1772     struct iwl_mvm_reprobe *reprobe;
1773 
1774     reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1775     if (device_reprobe(reprobe->dev))
1776         dev_err(reprobe->dev, "reprobe failed!\n");
1777     put_device(reprobe->dev);
1778     kfree(reprobe);
1779     module_put(THIS_MODULE);
1780 }
1781 
1782 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1783 {
1784     iwl_abort_notification_waits(&mvm->notif_wait);
1785     iwl_dbg_tlv_del_timers(mvm->trans);
1786 
1787     /*
1788      * This is a bit racy, but worst case we tell mac80211 about
1789      * a stopped/aborted scan when that was already done which
1790      * is not a problem. It is necessary to abort any os scan
1791      * here because mac80211 requires having the scan cleared
1792      * before restarting.
1793      * We'll reset the scan_status to NONE in restart cleanup in
1794      * the next start() call from mac80211. If restart isn't called
1795      * (no fw restart) scan status will stay busy.
1796      */
1797     iwl_mvm_report_scan_aborted(mvm);
1798 
1799     /*
1800      * If we're restarting already, don't cycle restarts.
1801      * If INIT fw asserted, it will likely fail again.
1802      * If WoWLAN fw asserted, don't restart either, mac80211
1803      * can't recover this since we're already half suspended.
1804      */
1805     if (!mvm->fw_restart && fw_error) {
1806         iwl_fw_error_collect(&mvm->fwrt, false);
1807     } else if (test_bit(IWL_MVM_STATUS_STARTING,
1808                 &mvm->status)) {
1809         IWL_ERR(mvm, "Starting mac, retry will be triggered anyway\n");
1810     } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1811         struct iwl_mvm_reprobe *reprobe;
1812 
1813         IWL_ERR(mvm,
1814             "Firmware error during reconfiguration - reprobe!\n");
1815 
1816         /*
1817          * get a module reference to avoid doing this while unloading
1818          * anyway and to avoid scheduling a work with code that's
1819          * being removed.
1820          */
1821         if (!try_module_get(THIS_MODULE)) {
1822             IWL_ERR(mvm, "Module is being unloaded - abort\n");
1823             return;
1824         }
1825 
1826         reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1827         if (!reprobe) {
1828             module_put(THIS_MODULE);
1829             return;
1830         }
1831         reprobe->dev = get_device(mvm->trans->dev);
1832         INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1833         schedule_work(&reprobe->work);
1834     } else if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1835                 &mvm->status)) {
1836         IWL_ERR(mvm, "HW restart already requested, but not started\n");
1837     } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1838            mvm->hw_registered &&
1839            !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1840         /* This should be first thing before trying to collect any
1841          * data to avoid endless loops if any HW error happens while
1842          * collecting debug data.
1843          */
1844         set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1845 
1846         if (mvm->fw->ucode_capa.error_log_size) {
1847             u32 src_size = mvm->fw->ucode_capa.error_log_size;
1848             u32 src_addr = mvm->fw->ucode_capa.error_log_addr;
1849             u8 *recover_buf = kzalloc(src_size, GFP_ATOMIC);
1850 
1851             if (recover_buf) {
1852                 mvm->error_recovery_buf = recover_buf;
1853                 iwl_trans_read_mem_bytes(mvm->trans,
1854                              src_addr,
1855                              recover_buf,
1856                              src_size);
1857             }
1858         }
1859 
1860         iwl_fw_error_collect(&mvm->fwrt, false);
1861 
1862         if (fw_error && mvm->fw_restart > 0) {
1863             mvm->fw_restart--;
1864             ieee80211_restart_hw(mvm->hw);
1865         } else if (mvm->fwrt.trans->dbg.restart_required) {
1866             IWL_DEBUG_INFO(mvm, "FW restart requested after debug collection\n");
1867             mvm->fwrt.trans->dbg.restart_required = FALSE;
1868             ieee80211_restart_hw(mvm->hw);
1869         } else if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_8000) {
1870             ieee80211_restart_hw(mvm->hw);
1871         }
1872     }
1873 }
1874 
1875 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode, bool sync)
1876 {
1877     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1878 
1879     if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status) &&
1880         !test_and_clear_bit(IWL_MVM_STATUS_SUPPRESS_ERROR_LOG_ONCE,
1881                 &mvm->status))
1882         iwl_mvm_dump_nic_error_log(mvm);
1883 
1884     if (sync) {
1885         iwl_fw_error_collect(&mvm->fwrt, true);
1886         /*
1887          * Currently, the only case for sync=true is during
1888          * shutdown, so just stop in this case. If/when that
1889          * changes, we need to be a bit smarter here.
1890          */
1891         return;
1892     }
1893 
1894     /*
1895      * If the firmware crashes while we're already considering it
1896      * to be dead then don't ask for a restart, that cannot do
1897      * anything useful anyway.
1898      */
1899     if (!test_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status))
1900         return;
1901 
1902     iwl_mvm_nic_restart(mvm, false);
1903 }
1904 
1905 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1906 {
1907     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1908 
1909     WARN_ON(1);
1910     iwl_mvm_nic_restart(mvm, true);
1911 }
1912 
1913 static void iwl_op_mode_mvm_time_point(struct iwl_op_mode *op_mode,
1914                        enum iwl_fw_ini_time_point tp_id,
1915                        union iwl_dbg_tlv_tp_data *tp_data)
1916 {
1917     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1918 
1919     iwl_dbg_tlv_time_point(&mvm->fwrt, tp_id, tp_data);
1920 }
1921 
1922 #define IWL_MVM_COMMON_OPS                  \
1923     /* these could be differentiated */         \
1924     .async_cb = iwl_mvm_async_cb,               \
1925     .queue_full = iwl_mvm_stop_sw_queue,            \
1926     .queue_not_full = iwl_mvm_wake_sw_queue,        \
1927     .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,      \
1928     .free_skb = iwl_mvm_free_skb,               \
1929     .nic_error = iwl_mvm_nic_error,             \
1930     .cmd_queue_full = iwl_mvm_cmd_queue_full,       \
1931     .nic_config = iwl_mvm_nic_config,           \
1932     /* as we only register one, these MUST be common! */    \
1933     .start = iwl_op_mode_mvm_start,             \
1934     .stop = iwl_op_mode_mvm_stop,               \
1935     .time_point = iwl_op_mode_mvm_time_point
1936 
1937 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1938     IWL_MVM_COMMON_OPS,
1939     .rx = iwl_mvm_rx,
1940 };
1941 
1942 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1943                   struct napi_struct *napi,
1944                   struct iwl_rx_cmd_buffer *rxb,
1945                   unsigned int queue)
1946 {
1947     struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1948     struct iwl_rx_packet *pkt = rxb_addr(rxb);
1949     u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1950 
1951     if (unlikely(queue >= mvm->trans->num_rx_queues))
1952         return;
1953 
1954     if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1955         iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1956     else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1957                      RX_QUEUES_NOTIFICATION)))
1958         iwl_mvm_rx_queue_notif(mvm, napi, rxb, queue);
1959     else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1960         iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1961 }
1962 
1963 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1964     IWL_MVM_COMMON_OPS,
1965     .rx = iwl_mvm_rx_mq,
1966     .rx_rss = iwl_mvm_rx_mq_rss,
1967 };
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