1/******************************************************************************
   2 *
   3 * This file is provided under a dual BSD/GPLv2 license.  When using or
   4 * redistributing this file, you may do so under either license.
   5 *
   6 * GPL LICENSE SUMMARY
   7 *
   8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11 * Copyright(c) 2018        Intel Corporation
  12 *
  13 * This program is free software; you can redistribute it and/or modify
  14 * it under the terms of version 2 of the GNU General Public License as
  15 * published by the Free Software Foundation.
  16 *
  17 * This program is distributed in the hope that it will be useful, but
  18 * WITHOUT ANY WARRANTY; without even the implied warranty of
  19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 * General Public License for more details.
  21 *
  22 * You should have received a copy of the GNU General Public License
  23 * along with this program; if not, write to the Free Software
  24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  25 * USA
  26 *
  27 * The full GNU General Public License is included in this distribution
  28 * in the file called COPYING.
  29 *
  30 * Contact Information:
  31 *  Intel Linux Wireless <linuxwifi@intel.com>
  32 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  33 *
  34 * BSD LICENSE
  35 *
  36 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  37 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  38 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  39 * Copyright(c) 2018        Intel Corporation
  40 * All rights reserved.
  41 *
  42 * Redistribution and use in source and binary forms, with or without
  43 * modification, are permitted provided that the following conditions
  44 * are met:
  45 *
  46 *  * Redistributions of source code must retain the above copyright
  47 *    notice, this list of conditions and the following disclaimer.
  48 *  * Redistributions in binary form must reproduce the above copyright
  49 *    notice, this list of conditions and the following disclaimer in
  50 *    the documentation and/or other materials provided with the
  51 *    distribution.
  52 *  * Neither the name Intel Corporation nor the names of its
  53 *    contributors may be used to endorse or promote products derived
  54 *    from this software without specific prior written permission.
  55 *
  56 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  57 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  58 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  59 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  60 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  61 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  62 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  66 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  67 *
  68 *****************************************************************************/
  69#include <linux/module.h>
  70#include <linux/vmalloc.h>
  71#include <net/mac80211.h>
  72
  73#include "fw/notif-wait.h"
  74#include "iwl-trans.h"
  75#include "iwl-op-mode.h"
  76#include "fw/img.h"
  77#include "iwl-debug.h"
  78#include "iwl-drv.h"
  79#include "iwl-modparams.h"
  80#include "mvm.h"
  81#include "iwl-phy-db.h"
  82#include "iwl-eeprom-parse.h"
  83#include "iwl-csr.h"
  84#include "iwl-io.h"
  85#include "iwl-prph.h"
  86#include "rs.h"
  87#include "fw/api/scan.h"
  88#include "time-event.h"
 
  89#include "fw-api.h"
  90#include "fw/api/scan.h"
  91#include "fw/acpi.h"
  92
  93#define DRV_DESCRIPTION	"The new Intel(R) wireless AGN driver for Linux"
  94MODULE_DESCRIPTION(DRV_DESCRIPTION);
  95MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  96MODULE_LICENSE("GPL");
  97
  98static const struct iwl_op_mode_ops iwl_mvm_ops;
  99static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
 100
 101struct iwl_mvm_mod_params iwlmvm_mod_params = {
 102	.power_scheme = IWL_POWER_SCHEME_BPS,
 103	.tfd_q_hang_detect = true
 104	/* rest of fields are 0 by default */
 105};
 106
 107module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
 108MODULE_PARM_DESC(init_dbg,
 109		 "set to true to debug an ASSERT in INIT fw (default: false");
 110module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, 0444);
 111MODULE_PARM_DESC(power_scheme,
 112		 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
 113module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
 114		   bool, 0444);
 115MODULE_PARM_DESC(tfd_q_hang_detect,
 116		 "TFD queues hang detection (default: true");
 117
 118/*
 119 * module init and exit functions
 120 */
 121static int __init iwl_mvm_init(void)
 122{
 123	int ret;
 124
 125	ret = iwl_mvm_rate_control_register();
 126	if (ret) {
 127		pr_err("Unable to register rate control algorithm: %d\n", ret);
 128		return ret;
 129	}
 130
 131	ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
 132	if (ret)
 
 133		pr_err("Unable to register MVM op_mode: %d\n", ret);
 
 
 134
 135	return ret;
 136}
 137module_init(iwl_mvm_init);
 138
 139static void __exit iwl_mvm_exit(void)
 140{
 141	iwl_opmode_deregister("iwlmvm");
 142	iwl_mvm_rate_control_unregister();
 143}
 144module_exit(iwl_mvm_exit);
 145
 146static 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 and higher set the ADC
 176	 * sampling, and shouldn't be set to any non-zero value.
 177	 * The same is supposed to be true of the other HW, but unsetting
 178	 * them (such as the 7260) causes automatic tests to fail on seemingly
 179	 * unrelated errors. Need to further investigate this, but for now
 180	 * we'll separate cases.
 181	 */
 182	if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
 183		reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
 184
 185	iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
 186				CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
 187				CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
 188				CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
 189				CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
 190				CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
 191				CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 192				CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
 193				reg_val);
 194
 195	IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
 196		       radio_cfg_step, radio_cfg_dash);
 197
 198	/*
 199	 * W/A : NIC is stuck in a reset state after Early PCIe power off
 200	 * (PCIe power is lost before PERST# is asserted), causing ME FW
 201	 * to lose ownership and not being able to obtain it back.
 202	 */
 203	if (!mvm->trans->cfg->apmg_not_supported)
 204		iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
 205				       APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
 206				       ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
 207}
 208
 209/**
 210 * enum iwl_rx_handler_context context for Rx handler
 211 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 212 *	which can't acquire mvm->mutex.
 213 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 214 *	(and only in this case!), it should be set as ASYNC. In that case,
 215 *	it will be called from a worker with mvm->mutex held.
 216 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 217 *	mutex itself, it will be called from a worker without mvm->mutex held.
 218 */
 219enum iwl_rx_handler_context {
 220	RX_HANDLER_SYNC,
 221	RX_HANDLER_ASYNC_LOCKED,
 222	RX_HANDLER_ASYNC_UNLOCKED,
 223};
 224
 225/**
 226 * struct iwl_rx_handlers handler for FW notification
 227 * @cmd_id: command id
 228 * @context: see &iwl_rx_handler_context
 229 * @fn: the function is called when notification is received
 230 */
 231struct iwl_rx_handlers {
 232	u16 cmd_id;
 233	enum iwl_rx_handler_context context;
 234	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 235};
 236
 237#define RX_HANDLER(_cmd_id, _fn, _context)	\
 238	{ .cmd_id = _cmd_id, .fn = _fn, .context = _context }
 239#define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)	\
 240	{ .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
 241
 242/*
 243 * Handlers for fw notifications
 244 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 245 * This list should be in order of frequency for performance purposes.
 246 *
 247 * The handler can be one from three contexts, see &iwl_rx_handler_context
 248 */
 249static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 250	RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
 251	RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
 252
 253	RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
 254		   RX_HANDLER_ASYNC_LOCKED),
 255	RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
 256		   RX_HANDLER_ASYNC_LOCKED),
 257	RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
 258		   RX_HANDLER_ASYNC_LOCKED),
 
 
 259
 260	RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
 261		   iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
 262
 263	RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
 264		   RX_HANDLER_SYNC),
 265	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
 266		   RX_HANDLER_ASYNC_LOCKED),
 267
 268	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
 269
 270	RX_HANDLER(SCAN_ITERATION_COMPLETE,
 271		   iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 272	RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
 273		   iwl_mvm_rx_lmac_scan_complete_notif,
 274		   RX_HANDLER_ASYNC_LOCKED),
 275	RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
 276		   RX_HANDLER_SYNC),
 277	RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
 278		   RX_HANDLER_ASYNC_LOCKED),
 279	RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
 280		   iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
 281
 282	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
 283		   RX_HANDLER_SYNC),
 284
 285	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
 286		   RX_HANDLER_SYNC),
 287
 288	RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
 289	RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
 290		   iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
 291	RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
 292		   RX_HANDLER_ASYNC_LOCKED),
 293	RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
 294		       iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
 295	RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
 296		       iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
 297
 298	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
 299		   RX_HANDLER_ASYNC_LOCKED),
 300	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
 301		   RX_HANDLER_SYNC),
 302	RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
 303		   RX_HANDLER_ASYNC_LOCKED),
 304	RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
 305		       iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
 306	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
 307		       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
 308	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
 309		       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
 310	RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
 311		       iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
 312};
 313#undef RX_HANDLER
 314#undef RX_HANDLER_GRP
 315
 316/* Please keep this array *SORTED* by hex value.
 317 * Access is done through binary search
 318 */
 319static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
 320	HCMD_NAME(MVM_ALIVE),
 321	HCMD_NAME(REPLY_ERROR),
 322	HCMD_NAME(ECHO_CMD),
 323	HCMD_NAME(INIT_COMPLETE_NOTIF),
 324	HCMD_NAME(PHY_CONTEXT_CMD),
 325	HCMD_NAME(DBG_CFG),
 
 326	HCMD_NAME(SCAN_CFG_CMD),
 327	HCMD_NAME(SCAN_REQ_UMAC),
 328	HCMD_NAME(SCAN_ABORT_UMAC),
 329	HCMD_NAME(SCAN_COMPLETE_UMAC),
 330	HCMD_NAME(TOF_CMD),
 331	HCMD_NAME(TOF_NOTIFICATION),
 332	HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
 333	HCMD_NAME(ADD_STA_KEY),
 334	HCMD_NAME(ADD_STA),
 335	HCMD_NAME(REMOVE_STA),
 336	HCMD_NAME(FW_GET_ITEM_CMD),
 337	HCMD_NAME(TX_CMD),
 338	HCMD_NAME(SCD_QUEUE_CFG),
 339	HCMD_NAME(TXPATH_FLUSH),
 340	HCMD_NAME(MGMT_MCAST_KEY),
 341	HCMD_NAME(WEP_KEY),
 342	HCMD_NAME(SHARED_MEM_CFG),
 343	HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
 344	HCMD_NAME(MAC_CONTEXT_CMD),
 345	HCMD_NAME(TIME_EVENT_CMD),
 346	HCMD_NAME(TIME_EVENT_NOTIFICATION),
 347	HCMD_NAME(BINDING_CONTEXT_CMD),
 348	HCMD_NAME(TIME_QUOTA_CMD),
 349	HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
 350	HCMD_NAME(LEDS_CMD),
 351	HCMD_NAME(LQ_CMD),
 352	HCMD_NAME(FW_PAGING_BLOCK_CMD),
 353	HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
 354	HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
 355	HCMD_NAME(HOT_SPOT_CMD),
 356	HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
 
 
 
 
 357	HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
 358	HCMD_NAME(BT_COEX_CI),
 359	HCMD_NAME(PHY_CONFIGURATION_CMD),
 360	HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
 361	HCMD_NAME(PHY_DB_CMD),
 362	HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
 363	HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
 
 364	HCMD_NAME(POWER_TABLE_CMD),
 365	HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
 366	HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
 367	HCMD_NAME(DC2DC_CONFIG_CMD),
 368	HCMD_NAME(NVM_ACCESS_CMD),
 
 369	HCMD_NAME(BEACON_NOTIFICATION),
 370	HCMD_NAME(BEACON_TEMPLATE_CMD),
 371	HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
 372	HCMD_NAME(BT_CONFIG),
 373	HCMD_NAME(STATISTICS_CMD),
 374	HCMD_NAME(STATISTICS_NOTIFICATION),
 375	HCMD_NAME(EOSP_NOTIFICATION),
 376	HCMD_NAME(REDUCE_TX_POWER_CMD),
 
 377	HCMD_NAME(CARD_STATE_NOTIFICATION),
 378	HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
 379	HCMD_NAME(TDLS_CONFIG_CMD),
 380	HCMD_NAME(MAC_PM_POWER_TABLE),
 381	HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
 382	HCMD_NAME(MFUART_LOAD_NOTIFICATION),
 383	HCMD_NAME(RSS_CONFIG_CMD),
 384	HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
 385	HCMD_NAME(REPLY_RX_PHY_CMD),
 386	HCMD_NAME(REPLY_RX_MPDU_CMD),
 387	HCMD_NAME(FRAME_RELEASE),
 388	HCMD_NAME(BA_NOTIF),
 389	HCMD_NAME(MCC_UPDATE_CMD),
 390	HCMD_NAME(MCC_CHUB_UPDATE_CMD),
 391	HCMD_NAME(MARKER_CMD),
 
 
 392	HCMD_NAME(BT_PROFILE_NOTIFICATION),
 393	HCMD_NAME(BCAST_FILTER_CMD),
 394	HCMD_NAME(MCAST_FILTER_CMD),
 395	HCMD_NAME(REPLY_SF_CFG_CMD),
 396	HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
 397	HCMD_NAME(D3_CONFIG_CMD),
 398	HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
 399	HCMD_NAME(OFFLOADS_QUERY_CMD),
 400	HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
 401	HCMD_NAME(MATCH_FOUND_NOTIFICATION),
 
 402	HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
 403	HCMD_NAME(WOWLAN_PATTERNS),
 404	HCMD_NAME(WOWLAN_CONFIGURATION),
 405	HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
 406	HCMD_NAME(WOWLAN_TKIP_PARAM),
 407	HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
 408	HCMD_NAME(WOWLAN_GET_STATUSES),
 
 409	HCMD_NAME(SCAN_ITERATION_COMPLETE),
 410	HCMD_NAME(D0I3_END_CMD),
 411	HCMD_NAME(LTR_CONFIG),
 
 412};
 413
 414/* Please keep this array *SORTED* by hex value.
 415 * Access is done through binary search
 416 */
 417static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
 418	HCMD_NAME(SHARED_MEM_CFG_CMD),
 419	HCMD_NAME(INIT_EXTENDED_CFG_CMD),
 420};
 421
 422/* Please keep this array *SORTED* by hex value.
 423 * Access is done through binary search
 424 */
 425static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
 
 
 426	HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
 427};
 428
 429/* Please keep this array *SORTED* by hex value.
 430 * Access is done through binary search
 431 */
 432static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
 433	HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 434	HCMD_NAME(CTDP_CONFIG_CMD),
 435	HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
 436	HCMD_NAME(GEO_TX_POWER_LIMIT),
 437	HCMD_NAME(CT_KILL_NOTIFICATION),
 438	HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
 439};
 440
 441/* Please keep this array *SORTED* by hex value.
 442 * Access is done through binary search
 443 */
 444static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 445	HCMD_NAME(DQA_ENABLE_CMD),
 446	HCMD_NAME(UPDATE_MU_GROUPS_CMD),
 447	HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
 448	HCMD_NAME(STA_PM_NOTIF),
 449	HCMD_NAME(MU_GROUP_MGMT_NOTIF),
 450	HCMD_NAME(RX_QUEUES_NOTIFICATION),
 451};
 452
 453/* Please keep this array *SORTED* by hex value.
 454 * Access is done through binary search
 455 */
 456static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
 457	HCMD_NAME(MFU_ASSERT_DUMP_NTF),
 458};
 459
 460/* Please keep this array *SORTED* by hex value.
 461 * Access is done through binary search
 462 */
 463static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
 464	HCMD_NAME(STORED_BEACON_NTF),
 465};
 466
 467/* Please keep this array *SORTED* by hex value.
 468 * Access is done through binary search
 469 */
 470static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
 471	HCMD_NAME(NVM_ACCESS_COMPLETE),
 472	HCMD_NAME(NVM_GET_INFO),
 473};
 474
 475static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 476	[LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 477	[LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
 478	[SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
 479	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 480	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 481	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
 482	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 483	[REGULATORY_AND_NVM_GROUP] =
 484		HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
 485};
 486
 487/* this forward declaration can avoid to export the function */
 488static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
 489static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
 490
 491static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
 492{
 493	const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
 494	u64 dflt_pwr_limit;
 495
 496	if (!backoff)
 497		return 0;
 498
 499	dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
 
 
 500
 501	while (backoff->pwr) {
 502		if (dflt_pwr_limit >= backoff->pwr)
 503			return backoff->backoff;
 504
 505		backoff++;
 506	}
 507
 508	return 0;
 509}
 510
 
 
 511static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
 512{
 513	struct iwl_mvm *mvm =
 514		container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
 515	struct ieee80211_vif *tx_blocked_vif;
 516	struct iwl_mvm_vif *mvmvif;
 517
 518	mutex_lock(&mvm->mutex);
 519
 520	tx_blocked_vif =
 521		rcu_dereference_protected(mvm->csa_tx_blocked_vif,
 522					  lockdep_is_held(&mvm->mutex));
 523
 524	if (!tx_blocked_vif)
 525		goto unlock;
 526
 527	mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 528	iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
 529	RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
 530unlock:
 531	mutex_unlock(&mvm->mutex);
 532}
 533
 534static int iwl_mvm_fwrt_dump_start(void *ctx)
 535{
 536	struct iwl_mvm *mvm = ctx;
 537	int ret;
 538
 539	ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 540	if (ret)
 541		return ret;
 542
 543	mutex_lock(&mvm->mutex);
 544
 545	return 0;
 546}
 547
 548static void iwl_mvm_fwrt_dump_end(void *ctx)
 549{
 550	struct iwl_mvm *mvm = ctx;
 551
 552	mutex_unlock(&mvm->mutex);
 553
 554	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
 555}
 556
 557static bool iwl_mvm_fwrt_fw_running(void *ctx)
 558{
 559	return iwl_mvm_firmware_running(ctx);
 560}
 561
 562static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
 563	.dump_start = iwl_mvm_fwrt_dump_start,
 564	.dump_end = iwl_mvm_fwrt_dump_end,
 565	.fw_running = iwl_mvm_fwrt_fw_running,
 566};
 567
 568static struct iwl_op_mode *
 569iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 570		      const struct iwl_fw *fw, struct dentry *dbgfs_dir)
 571{
 572	struct ieee80211_hw *hw;
 573	struct iwl_op_mode *op_mode;
 574	struct iwl_mvm *mvm;
 575	struct iwl_trans_config trans_cfg = {};
 576	static const u8 no_reclaim_cmds[] = {
 577		TX_CMD,
 578	};
 579	int err, scan_size;
 580	u32 min_backoff;
 581
 582	/*
 583	 * We use IWL_MVM_STATION_COUNT to check the validity of the station
 584	 * index all over the driver - check that its value corresponds to the
 585	 * array size.
 586	 */
 587	BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
 588
 589	/********************************
 590	 * 1. Allocating and configuring HW data
 591	 ********************************/
 592	hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
 593				sizeof(struct iwl_mvm),
 594				&iwl_mvm_hw_ops);
 595	if (!hw)
 596		return NULL;
 597
 598	if (cfg->max_rx_agg_size)
 599		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
 600
 601	if (cfg->max_tx_agg_size)
 602		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
 603
 604	op_mode = hw->priv;
 605
 606	mvm = IWL_OP_MODE_GET_MVM(op_mode);
 607	mvm->dev = trans->dev;
 608	mvm->trans = trans;
 609	mvm->cfg = cfg;
 610	mvm->fw = fw;
 611	mvm->hw = hw;
 612
 613	iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
 614			    dbgfs_dir);
 615
 616	mvm->init_status = 0;
 617
 618	if (iwl_mvm_has_new_rx_api(mvm)) {
 619		op_mode->ops = &iwl_mvm_ops_mq;
 620		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
 621	} else {
 622		op_mode->ops = &iwl_mvm_ops;
 623		trans->rx_mpdu_cmd_hdr_size =
 624			sizeof(struct iwl_rx_mpdu_res_start);
 625
 626		if (WARN_ON(trans->num_rx_queues > 1))
 627			goto out_free;
 628	}
 629
 630	mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
 631
 632	mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
 633	mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
 634	mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
 635	mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
 636
 
 
 
 
 
 
 
 
 
 
 
 
 637	mvm->sf_state = SF_UNINIT;
 638	if (iwl_mvm_has_unified_ucode(mvm))
 639		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
 640	else
 641		iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
 642	mvm->drop_bcn_ap_mode = true;
 643
 644	mutex_init(&mvm->mutex);
 645	mutex_init(&mvm->d0i3_suspend_mutex);
 646	spin_lock_init(&mvm->async_handlers_lock);
 647	INIT_LIST_HEAD(&mvm->time_event_list);
 648	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
 649	INIT_LIST_HEAD(&mvm->async_handlers_list);
 650	spin_lock_init(&mvm->time_event_lock);
 651	spin_lock_init(&mvm->queue_info_lock);
 652
 653	INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
 654	INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
 
 655	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
 
 656	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
 657	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
 658	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
 659
 660	spin_lock_init(&mvm->d0i3_tx_lock);
 661	spin_lock_init(&mvm->refs_lock);
 662	skb_queue_head_init(&mvm->d0i3_tx);
 663	init_waitqueue_head(&mvm->d0i3_exit_waitq);
 664	init_waitqueue_head(&mvm->rx_sync_waitq);
 665
 666	atomic_set(&mvm->queue_sync_counter, 0);
 667
 668	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
 669
 670	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
 671
 672	/*
 673	 * Populate the state variables that the transport layer needs
 674	 * to know about.
 675	 */
 676	trans_cfg.op_mode = op_mode;
 677	trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 678	trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 679	switch (iwlwifi_mod_params.amsdu_size) {
 680	case IWL_AMSDU_DEF:
 681	case IWL_AMSDU_4K:
 682		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 683		break;
 684	case IWL_AMSDU_8K:
 685		trans_cfg.rx_buf_size = IWL_AMSDU_8K;
 686		break;
 687	case IWL_AMSDU_12K:
 688		trans_cfg.rx_buf_size = IWL_AMSDU_12K;
 689		break;
 690	default:
 691		pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
 692		       iwlwifi_mod_params.amsdu_size);
 693		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 694	}
 695
 696	/* the hardware splits the A-MSDU */
 697	if (mvm->cfg->mq_rx_supported)
 698		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
 699
 700	trans->wide_cmd_header = true;
 701	trans_cfg.bc_table_dword = true;
 702
 703	trans_cfg.command_groups = iwl_mvm_groups;
 704	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
 705
 706	trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
 
 
 
 707	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
 708	trans_cfg.scd_set_active = true;
 709
 710	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
 711					  driver_data[2]);
 712
 
 713	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
 714
 715	/* Set a short watchdog for the command queue */
 716	trans_cfg.cmd_q_wdg_timeout =
 717		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
 718
 719	snprintf(mvm->hw->wiphy->fw_version,
 720		 sizeof(mvm->hw->wiphy->fw_version),
 721		 "%s", fw->fw_version);
 722
 723	/* Configure transport layer */
 724	iwl_trans_configure(mvm->trans, &trans_cfg);
 725
 726	trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
 727	trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
 728	trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
 729	memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
 730	       sizeof(trans->dbg_conf_tlv));
 731	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 732
 733	/* set up notification wait support */
 734	iwl_notification_wait_init(&mvm->notif_wait);
 735
 736	/* Init phy db */
 737	mvm->phy_db = iwl_phy_db_init(trans);
 738	if (!mvm->phy_db) {
 739		IWL_ERR(mvm, "Cannot init phy_db\n");
 740		goto out_free;
 741	}
 742
 743	IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
 744		 mvm->cfg->name, mvm->trans->hw_rev);
 745
 746	if (iwlwifi_mod_params.nvm_file)
 747		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
 748	else
 749		IWL_DEBUG_EEPROM(mvm->trans->dev,
 750				 "working without external nvm file\n");
 751
 752	err = iwl_trans_start_hw(mvm->trans);
 753	if (err)
 754		goto out_free;
 755
 756	mutex_lock(&mvm->mutex);
 757	iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
 758	err = iwl_run_init_mvm_ucode(mvm, true);
 759	if (!iwlmvm_mod_params.init_dbg || !err)
 760		iwl_mvm_stop_device(mvm);
 761	iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
 762	mutex_unlock(&mvm->mutex);
 763	if (err < 0) {
 
 764		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
 765		goto out_free;
 766	}
 767
 768	scan_size = iwl_mvm_scan_size(mvm);
 769
 770	mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
 771	if (!mvm->scan_cmd)
 772		goto out_free;
 773
 774	/* Set EBS as successful as long as not stated otherwise by the FW. */
 775	mvm->last_ebs_successful = true;
 776
 777	err = iwl_mvm_mac_setup_register(mvm);
 778	if (err)
 779		goto out_free;
 780	mvm->hw_registered = true;
 781
 782	min_backoff = iwl_mvm_min_backoff(mvm);
 783	iwl_mvm_thermal_initialize(mvm, min_backoff);
 784
 785	err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
 786	if (err)
 787		goto out_unregister;
 788
 789	if (!iwl_mvm_has_new_rx_stats_api(mvm))
 790		memset(&mvm->rx_stats_v3, 0,
 791		       sizeof(struct mvm_statistics_rx_v3));
 792	else
 793		memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
 794
 795	/* The transport always starts with a taken reference, we can
 796	 * release it now if d0i3 is supported */
 797	if (iwl_mvm_is_d0i3_supported(mvm))
 798		iwl_trans_unref(mvm->trans);
 799
 800	iwl_mvm_tof_init(mvm);
 801
 802	return op_mode;
 803
 804 out_unregister:
 805	if (iwlmvm_mod_params.init_dbg)
 806		return op_mode;
 807
 808	ieee80211_unregister_hw(mvm->hw);
 809	mvm->hw_registered = false;
 810	iwl_mvm_leds_exit(mvm);
 811	iwl_mvm_thermal_exit(mvm);
 812 out_free:
 813	iwl_fw_flush_dump(&mvm->fwrt);
 814
 815	if (iwlmvm_mod_params.init_dbg)
 816		return op_mode;
 817	iwl_phy_db_free(mvm->phy_db);
 818	kfree(mvm->scan_cmd);
 819	iwl_trans_op_mode_leave(trans);
 820
 821	ieee80211_free_hw(mvm->hw);
 822	return NULL;
 823}
 824
 825static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
 826{
 827	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 828	int i;
 829
 830	/* If d0i3 is supported, we have released the reference that
 831	 * the transport started with, so we should take it back now
 832	 * that we are leaving.
 833	 */
 834	if (iwl_mvm_is_d0i3_supported(mvm))
 835		iwl_trans_ref(mvm->trans);
 836
 837	iwl_mvm_leds_exit(mvm);
 838
 839	iwl_mvm_thermal_exit(mvm);
 840
 841	if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
 842		ieee80211_unregister_hw(mvm->hw);
 843		mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 844	}
 845
 846	kfree(mvm->scan_cmd);
 847	kfree(mvm->mcast_filter_cmd);
 848	mvm->mcast_filter_cmd = NULL;
 849
 850#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
 851	kfree(mvm->d3_resume_sram);
 852#endif
 
 853	iwl_trans_op_mode_leave(mvm->trans);
 854
 855	iwl_phy_db_free(mvm->phy_db);
 856	mvm->phy_db = NULL;
 857
 858	kfree(mvm->nvm_data);
 859	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
 860		kfree(mvm->nvm_sections[i].data);
 861
 862	iwl_mvm_tof_clean(mvm);
 863
 864	mutex_destroy(&mvm->mutex);
 865	mutex_destroy(&mvm->d0i3_suspend_mutex);
 866
 867	ieee80211_free_hw(mvm->hw);
 868}
 869
 870struct iwl_async_handler_entry {
 871	struct list_head list;
 872	struct iwl_rx_cmd_buffer rxb;
 873	enum iwl_rx_handler_context context;
 874	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 875};
 876
 877void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
 878{
 879	struct iwl_async_handler_entry *entry, *tmp;
 880
 881	spin_lock_bh(&mvm->async_handlers_lock);
 882	list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
 883		iwl_free_rxb(&entry->rxb);
 884		list_del(&entry->list);
 885		kfree(entry);
 886	}
 887	spin_unlock_bh(&mvm->async_handlers_lock);
 888}
 889
 890static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
 891{
 892	struct iwl_mvm *mvm =
 893		container_of(wk, struct iwl_mvm, async_handlers_wk);
 894	struct iwl_async_handler_entry *entry, *tmp;
 895	LIST_HEAD(local_list);
 896
 897	/* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
 898
 899	/*
 900	 * Sync with Rx path with a lock. Remove all the entries from this list,
 901	 * add them to a local one (lock free), and then handle them.
 902	 */
 903	spin_lock_bh(&mvm->async_handlers_lock);
 904	list_splice_init(&mvm->async_handlers_list, &local_list);
 905	spin_unlock_bh(&mvm->async_handlers_lock);
 906
 907	list_for_each_entry_safe(entry, tmp, &local_list, list) {
 908		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 909			mutex_lock(&mvm->mutex);
 910		entry->fn(mvm, &entry->rxb);
 911		iwl_free_rxb(&entry->rxb);
 912		list_del(&entry->list);
 913		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
 914			mutex_unlock(&mvm->mutex);
 915		kfree(entry);
 916	}
 917}
 918
 919static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
 920					    struct iwl_rx_packet *pkt)
 921{
 922	struct iwl_fw_dbg_trigger_tlv *trig;
 923	struct iwl_fw_dbg_trigger_cmd *cmds_trig;
 924	int i;
 925
 926	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
 927		return;
 928
 929	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
 930	cmds_trig = (void *)trig->data;
 931
 932	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
 933		return;
 934
 935	for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
 936		/* don't collect on CMD 0 */
 937		if (!cmds_trig->cmds[i].cmd_id)
 938			break;
 939
 940		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
 941		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
 942			continue;
 943
 944		iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 945					"CMD 0x%02x.%02x received",
 946					pkt->hdr.group_id, pkt->hdr.cmd);
 947		break;
 948	}
 949}
 950
 951static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
 952			      struct iwl_rx_cmd_buffer *rxb,
 953			      struct iwl_rx_packet *pkt)
 954{
 955	int i;
 956
 957	iwl_mvm_rx_check_trigger(mvm, pkt);
 958
 959	/*
 960	 * Do the notification wait before RX handlers so
 961	 * even if the RX handler consumes the RXB we have
 962	 * access to it in the notification wait entry.
 963	 */
 964	iwl_notification_wait_notify(&mvm->notif_wait, pkt);
 965
 966	for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
 967		const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
 968		struct iwl_async_handler_entry *entry;
 969
 970		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
 971			continue;
 972
 973		if (rx_h->context == RX_HANDLER_SYNC) {
 974			rx_h->fn(mvm, rxb);
 975			return;
 976		}
 977
 978		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
 979		/* we can't do much... */
 980		if (!entry)
 981			return;
 982
 983		entry->rxb._page = rxb_steal_page(rxb);
 984		entry->rxb._offset = rxb->_offset;
 985		entry->rxb._rx_page_order = rxb->_rx_page_order;
 986		entry->fn = rx_h->fn;
 987		entry->context = rx_h->context;
 988		spin_lock(&mvm->async_handlers_lock);
 989		list_add_tail(&entry->list, &mvm->async_handlers_list);
 990		spin_unlock(&mvm->async_handlers_lock);
 991		schedule_work(&mvm->async_handlers_wk);
 992		return;
 993	}
 994
 995	iwl_fwrt_handle_notification(&mvm->fwrt, rxb);
 996}
 997
 998static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
 999		       struct napi_struct *napi,
1000		       struct iwl_rx_cmd_buffer *rxb)
1001{
1002	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1003	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1004	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1005
1006	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1007		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1008	else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1009		iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1010	else
1011		iwl_mvm_rx_common(mvm, rxb, pkt);
1012}
1013
1014static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1015			  struct napi_struct *napi,
1016			  struct iwl_rx_cmd_buffer *rxb)
1017{
1018	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1019	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1020	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1021
1022	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1023		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1024	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1025					 RX_QUEUES_NOTIFICATION)))
1026		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1027	else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1028		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1029	else if (cmd == WIDE_ID(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF))
1030		iwl_mvm_tlc_update_notif(mvm, pkt);
1031	else
1032		iwl_mvm_rx_common(mvm, rxb, pkt);
1033}
1034
1035void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1036{
1037	int q;
1038
1039	if (WARN_ON_ONCE(!mq))
1040		return;
1041
1042	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1043		if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1044			IWL_DEBUG_TX_QUEUES(mvm,
1045					    "mac80211 %d already stopped\n", q);
1046			continue;
1047		}
1048
1049		ieee80211_stop_queue(mvm->hw, q);
1050	}
1051}
1052
1053static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1054			     const struct iwl_device_cmd *cmd)
1055{
1056	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1057
1058	/*
1059	 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1060	 * commands that need to block the Tx queues.
1061	 */
1062	iwl_trans_block_txq_ptrs(mvm->trans, false);
1063}
1064
1065static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1066{
1067	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1068	unsigned long mq;
1069
1070	spin_lock_bh(&mvm->queue_info_lock);
1071	mq = mvm->hw_queue_to_mac80211[hw_queue];
1072	spin_unlock_bh(&mvm->queue_info_lock);
1073
1074	iwl_mvm_stop_mac_queues(mvm, mq);
1075}
1076
1077void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1078{
1079	int q;
1080
1081	if (WARN_ON_ONCE(!mq))
1082		return;
1083
1084	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1085		if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1086			IWL_DEBUG_TX_QUEUES(mvm,
1087					    "mac80211 %d still stopped\n", q);
1088			continue;
1089		}
1090
1091		ieee80211_wake_queue(mvm->hw, q);
1092	}
1093}
1094
1095static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1096{
1097	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1098	unsigned long mq;
1099
1100	spin_lock_bh(&mvm->queue_info_lock);
1101	mq = mvm->hw_queue_to_mac80211[hw_queue];
1102	spin_unlock_bh(&mvm->queue_info_lock);
1103
1104	iwl_mvm_start_mac_queues(mvm, mq);
1105}
1106
1107static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1108{
1109	bool state = iwl_mvm_is_radio_killed(mvm);
1110
1111	if (state)
1112		wake_up(&mvm->rx_sync_waitq);
1113
1114	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1115}
1116
1117void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1118{
1119	if (state)
1120		set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1121	else
1122		clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1123
1124	iwl_mvm_set_rfkill_state(mvm);
1125}
1126
1127static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1128{
1129	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1130	bool calibrating = READ_ONCE(mvm->calibrating);
1131
1132	if (state)
1133		set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1134	else
1135		clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1136
1137	iwl_mvm_set_rfkill_state(mvm);
1138
1139	/* iwl_run_init_mvm_ucode is waiting for results, abort it */
1140	if (calibrating)
1141		iwl_abort_notification_waits(&mvm->notif_wait);
1142
1143	/*
1144	 * Stop the device if we run OPERATIONAL firmware or if we are in the
1145	 * middle of the calibrations.
1146	 */
1147	return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1148}
1149
1150static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1151{
1152	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1153	struct ieee80211_tx_info *info;
1154
1155	info = IEEE80211_SKB_CB(skb);
1156	iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1157	ieee80211_free_txskb(mvm->hw, skb);
1158}
1159
1160struct iwl_mvm_reprobe {
1161	struct device *dev;
1162	struct work_struct work;
1163};
1164
1165static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1166{
1167	struct iwl_mvm_reprobe *reprobe;
1168
1169	reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1170	if (device_reprobe(reprobe->dev))
1171		dev_err(reprobe->dev, "reprobe failed!\n");
1172	kfree(reprobe);
1173	module_put(THIS_MODULE);
1174}
1175
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1176void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1177{
1178	iwl_abort_notification_waits(&mvm->notif_wait);
1179
1180	/*
1181	 * This is a bit racy, but worst case we tell mac80211 about
1182	 * a stopped/aborted scan when that was already done which
1183	 * is not a problem. It is necessary to abort any os scan
1184	 * here because mac80211 requires having the scan cleared
1185	 * before restarting.
1186	 * We'll reset the scan_status to NONE in restart cleanup in
1187	 * the next start() call from mac80211. If restart isn't called
1188	 * (no fw restart) scan status will stay busy.
1189	 */
1190	iwl_mvm_report_scan_aborted(mvm);
1191
1192	/*
1193	 * If we're restarting already, don't cycle restarts.
1194	 * If INIT fw asserted, it will likely fail again.
1195	 * If WoWLAN fw asserted, don't restart either, mac80211
1196	 * can't recover this since we're already half suspended.
1197	 */
1198	if (!mvm->fw_restart && fw_error) {
1199		iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1200					NULL);
1201	} else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
 
1202		struct iwl_mvm_reprobe *reprobe;
1203
1204		IWL_ERR(mvm,
1205			"Firmware error during reconfiguration - reprobe!\n");
1206
1207		/*
1208		 * get a module reference to avoid doing this while unloading
1209		 * anyway and to avoid scheduling a work with code that's
1210		 * being removed.
1211		 */
1212		if (!try_module_get(THIS_MODULE)) {
1213			IWL_ERR(mvm, "Module is being unloaded - abort\n");
1214			return;
1215		}
1216
1217		reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1218		if (!reprobe) {
1219			module_put(THIS_MODULE);
1220			return;
1221		}
1222		reprobe->dev = mvm->trans->dev;
1223		INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1224		schedule_work(&reprobe->work);
1225	} else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1226		   mvm->hw_registered) {
1227		/* don't let the transport/FW power down */
1228		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1229
1230		if (fw_error && mvm->fw_restart > 0)
1231			mvm->fw_restart--;
1232		set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1233		ieee80211_restart_hw(mvm->hw);
1234	}
1235}
1236
1237static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1238{
1239	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1240
1241	iwl_mvm_dump_nic_error_log(mvm);
1242
1243	iwl_mvm_nic_restart(mvm, true);
1244}
1245
1246static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1247{
1248	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1249
1250	WARN_ON(1);
1251	iwl_mvm_nic_restart(mvm, true);
1252}
1253
1254struct iwl_d0i3_iter_data {
1255	struct iwl_mvm *mvm;
1256	struct ieee80211_vif *connected_vif;
1257	u8 ap_sta_id;
1258	u8 vif_count;
1259	u8 offloading_tid;
1260	bool disable_offloading;
1261};
1262
1263static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1264					struct ieee80211_vif *vif,
1265					struct iwl_d0i3_iter_data *iter_data)
1266{
1267	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1268	struct iwl_mvm_sta *mvmsta;
1269	u32 available_tids = 0;
1270	u8 tid;
1271
1272	if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1273		    mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1274		return false;
1275
1276	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1277	if (!mvmsta)
1278		return false;
1279
1280	spin_lock_bh(&mvmsta->lock);
1281	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1282		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1283
1284		/*
1285		 * in case of pending tx packets, don't use this tid
1286		 * for offloading in order to prevent reuse of the same
1287		 * qos seq counters.
1288		 */
1289		if (iwl_mvm_tid_queued(mvm, tid_data))
1290			continue;
1291
1292		if (tid_data->state != IWL_AGG_OFF)
1293			continue;
1294
1295		available_tids |= BIT(tid);
1296	}
1297	spin_unlock_bh(&mvmsta->lock);
1298
1299	/*
1300	 * disallow protocol offloading if we have no available tid
1301	 * (with no pending frames and no active aggregation,
1302	 * as we don't handle "holes" properly - the scheduler needs the
1303	 * frame's seq number and TFD index to match)
1304	 */
1305	if (!available_tids)
1306		return true;
1307
1308	/* for simplicity, just use the first available tid */
1309	iter_data->offloading_tid = ffs(available_tids) - 1;
1310	return false;
1311}
1312
1313static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1314					struct ieee80211_vif *vif)
1315{
1316	struct iwl_d0i3_iter_data *data = _data;
1317	struct iwl_mvm *mvm = data->mvm;
1318	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1319	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1320
1321	IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1322	if (vif->type != NL80211_IFTYPE_STATION ||
1323	    !vif->bss_conf.assoc)
1324		return;
1325
1326	/*
1327	 * in case of pending tx packets or active aggregations,
1328	 * avoid offloading features in order to prevent reuse of
1329	 * the same qos seq counters.
1330	 */
1331	if (iwl_mvm_disallow_offloading(mvm, vif, data))
1332		data->disable_offloading = true;
1333
1334	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1335	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1336				   false, flags);
1337
1338	/*
1339	 * on init/association, mvm already configures POWER_TABLE_CMD
1340	 * and REPLY_MCAST_FILTER_CMD, so currently don't
1341	 * reconfigure them (we might want to use different
1342	 * params later on, though).
1343	 */
1344	data->ap_sta_id = mvmvif->ap_sta_id;
1345	data->vif_count++;
1346
1347	/*
1348	 * no new commands can be sent at this stage, so it's safe
1349	 * to save the vif pointer during d0i3 entrance.
1350	 */
1351	data->connected_vif = vif;
1352}
1353
1354static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1355				    struct iwl_wowlan_config_cmd *cmd,
1356				    struct iwl_d0i3_iter_data *iter_data)
1357{
1358	struct ieee80211_sta *ap_sta;
1359	struct iwl_mvm_sta *mvm_ap_sta;
1360
1361	if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1362		return;
1363
1364	rcu_read_lock();
1365
1366	ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1367	if (IS_ERR_OR_NULL(ap_sta))
1368		goto out;
1369
1370	mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1371	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1372	cmd->offloading_tid = iter_data->offloading_tid;
1373	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1374		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1375	/*
1376	 * The d0i3 uCode takes care of the nonqos counters,
1377	 * so configure only the qos seq ones.
1378	 */
1379	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1380out:
1381	rcu_read_unlock();
1382}
1383
1384int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1385{
1386	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1387	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1388	int ret;
1389	struct iwl_d0i3_iter_data d0i3_iter_data = {
1390		.mvm = mvm,
1391	};
1392	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1393		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1394					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1395					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1396	};
1397	struct iwl_d3_manager_config d3_cfg_cmd = {
1398		.min_sleep_time = cpu_to_le32(1000),
1399		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1400	};
1401
1402	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1403
1404	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1405		return -EINVAL;
1406
1407	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1408
1409	/*
1410	 * iwl_mvm_ref_sync takes a reference before checking the flag.
1411	 * so by checking there is no held reference we prevent a state
1412	 * in which iwl_mvm_ref_sync continues successfully while we
1413	 * configure the firmware to enter d0i3
1414	 */
1415	if (iwl_mvm_ref_taken(mvm)) {
1416		IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1417		clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1418		wake_up(&mvm->d0i3_exit_waitq);
1419		return 1;
1420	}
1421
1422	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1423						   IEEE80211_IFACE_ITER_NORMAL,
1424						   iwl_mvm_enter_d0i3_iterator,
1425						   &d0i3_iter_data);
1426	if (d0i3_iter_data.vif_count == 1) {
1427		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1428		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1429	} else {
1430		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1431		mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1432		mvm->d0i3_offloading = false;
1433	}
1434
1435	/* make sure we have no running tx while configuring the seqno */
1436	synchronize_net();
1437
1438	/* Flush the hw queues, in case something got queued during entry */
1439	/* TODO new tx api */
1440	if (iwl_mvm_has_new_tx_api(mvm)) {
1441		WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1442	} else {
1443		ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1444					    flags);
1445		if (ret)
1446			return ret;
1447	}
1448
1449	/* configure wowlan configuration only if needed */
1450	if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1451		/* wake on beacons only if beacon storing isn't supported */
1452		if (!fw_has_capa(&mvm->fw->ucode_capa,
1453				 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1454			wowlan_config_cmd.wakeup_filter |=
1455				cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1456
1457		iwl_mvm_wowlan_config_key_params(mvm,
1458						 d0i3_iter_data.connected_vif,
1459						 true, flags);
1460
1461		iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1462					&d0i3_iter_data);
1463
1464		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1465					   sizeof(wowlan_config_cmd),
1466					   &wowlan_config_cmd);
1467		if (ret)
1468			return ret;
1469	}
1470
1471	return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1472				    flags | CMD_MAKE_TRANS_IDLE,
1473				    sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1474}
1475
1476static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1477				       struct ieee80211_vif *vif)
1478{
1479	struct iwl_mvm *mvm = _data;
1480	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1481
1482	IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1483	if (vif->type != NL80211_IFTYPE_STATION ||
1484	    !vif->bss_conf.assoc)
1485		return;
1486
1487	iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1488}
1489
1490struct iwl_mvm_d0i3_exit_work_iter_data {
1491	struct iwl_mvm *mvm;
1492	struct iwl_wowlan_status *status;
1493	u32 wakeup_reasons;
1494};
1495
1496static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1497					struct ieee80211_vif *vif)
1498{
1499	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1500	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1501	u32 reasons = data->wakeup_reasons;
1502
1503	/* consider only the relevant station interface */
1504	if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1505	    data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1506		return;
1507
1508	if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1509		iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1510	else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1511		ieee80211_beacon_loss(vif);
1512	else
1513		iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1514}
1515
1516void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1517{
1518	struct ieee80211_sta *sta = NULL;
1519	struct iwl_mvm_sta *mvm_ap_sta;
1520	int i;
1521	bool wake_queues = false;
1522
1523	lockdep_assert_held(&mvm->mutex);
1524
1525	spin_lock_bh(&mvm->d0i3_tx_lock);
1526
1527	if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1528		goto out;
1529
1530	IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1531
1532	/* get the sta in order to update seq numbers and re-enqueue skbs */
1533	sta = rcu_dereference_protected(
1534			mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1535			lockdep_is_held(&mvm->mutex));
1536
1537	if (IS_ERR_OR_NULL(sta)) {
1538		sta = NULL;
1539		goto out;
1540	}
1541
1542	if (mvm->d0i3_offloading && qos_seq) {
1543		/* update qos seq numbers if offloading was enabled */
1544		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1545		for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1546			u16 seq = le16_to_cpu(qos_seq[i]);
1547			/* firmware stores last-used one, we store next one */
1548			seq += 0x10;
1549			mvm_ap_sta->tid_data[i].seq_number = seq;
1550		}
1551	}
1552out:
1553	/* re-enqueue (or drop) all packets */
1554	while (!skb_queue_empty(&mvm->d0i3_tx)) {
1555		struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1556
1557		if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1558			ieee80211_free_txskb(mvm->hw, skb);
1559
1560		/* if the skb_queue is not empty, we need to wake queues */
1561		wake_queues = true;
1562	}
1563	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1564	wake_up(&mvm->d0i3_exit_waitq);
1565	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1566	if (wake_queues)
1567		ieee80211_wake_queues(mvm->hw);
1568
1569	spin_unlock_bh(&mvm->d0i3_tx_lock);
1570}
1571
1572static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1573{
1574	struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1575	struct iwl_host_cmd get_status_cmd = {
1576		.id = WOWLAN_GET_STATUSES,
1577		.flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1578	};
1579	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1580		.mvm = mvm,
1581	};
1582
1583	struct iwl_wowlan_status *status;
1584	int ret;
1585	u32 wakeup_reasons = 0;
1586	__le16 *qos_seq = NULL;
1587
1588	mutex_lock(&mvm->mutex);
1589	ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1590	if (ret)
1591		goto out;
1592
 
 
 
1593	status = (void *)get_status_cmd.resp_pkt->data;
1594	wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1595	qos_seq = status->qos_seq_ctr;
1596
1597	IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1598
1599	iter_data.wakeup_reasons = wakeup_reasons;
1600	iter_data.status = status;
1601	ieee80211_iterate_active_interfaces(mvm->hw,
1602					    IEEE80211_IFACE_ITER_NORMAL,
1603					    iwl_mvm_d0i3_exit_work_iter,
1604					    &iter_data);
1605out:
1606	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1607
1608	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1609		       wakeup_reasons);
1610
1611	/* qos_seq might point inside resp_pkt, so free it only now */
1612	if (get_status_cmd.resp_pkt)
1613		iwl_free_resp(&get_status_cmd);
1614
1615	/* the FW might have updated the regdomain */
1616	iwl_mvm_update_changed_regdom(mvm);
1617
1618	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1619	mutex_unlock(&mvm->mutex);
1620}
1621
1622int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1623{
1624	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1625		    CMD_WAKE_UP_TRANS;
1626	int ret;
1627
1628	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1629
1630	if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1631		return -EINVAL;
1632
1633	mutex_lock(&mvm->d0i3_suspend_mutex);
1634	if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1635		IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1636		__set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1637		mutex_unlock(&mvm->d0i3_suspend_mutex);
1638		return 0;
1639	}
1640	mutex_unlock(&mvm->d0i3_suspend_mutex);
1641
1642	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1643	if (ret)
1644		goto out;
1645
1646	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1647						   IEEE80211_IFACE_ITER_NORMAL,
1648						   iwl_mvm_exit_d0i3_iterator,
1649						   mvm);
1650out:
1651	schedule_work(&mvm->d0i3_exit_work);
1652	return ret;
1653}
1654
1655int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1656{
1657	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1658
1659	iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1660	return _iwl_mvm_exit_d0i3(mvm);
1661}
1662
1663#define IWL_MVM_COMMON_OPS					\
1664	/* these could be differentiated */			\
1665	.async_cb = iwl_mvm_async_cb,				\
1666	.queue_full = iwl_mvm_stop_sw_queue,			\
1667	.queue_not_full = iwl_mvm_wake_sw_queue,		\
1668	.hw_rf_kill = iwl_mvm_set_hw_rfkill_state,		\
1669	.free_skb = iwl_mvm_free_skb,				\
1670	.nic_error = iwl_mvm_nic_error,				\
1671	.cmd_queue_full = iwl_mvm_cmd_queue_full,		\
1672	.nic_config = iwl_mvm_nic_config,			\
1673	.enter_d0i3 = iwl_mvm_enter_d0i3,			\
1674	.exit_d0i3 = iwl_mvm_exit_d0i3,				\
1675	/* as we only register one, these MUST be common! */	\
1676	.start = iwl_op_mode_mvm_start,				\
1677	.stop = iwl_op_mode_mvm_stop
1678
1679static const struct iwl_op_mode_ops iwl_mvm_ops = {
1680	IWL_MVM_COMMON_OPS,
1681	.rx = iwl_mvm_rx,
1682};
1683
1684static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1685			      struct napi_struct *napi,
1686			      struct iwl_rx_cmd_buffer *rxb,
1687			      unsigned int queue)
1688{
1689	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1690	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1691	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1692
1693	if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1694		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1695	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1696					 RX_QUEUES_NOTIFICATION)))
1697		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1698	else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1699		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1700}
1701
1702static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1703	IWL_MVM_COMMON_OPS,
1704	.rx = iwl_mvm_rx_mq,
1705	.rx_rss = iwl_mvm_rx_mq_rss,
1706};