ops.c 50.1 KB
Newer Older
J
Johannes Berg 已提交
1 2 3 4 5 6 7
/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
8
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
J
Johannes Berg 已提交
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
26
 * in the file called COPYING.
J
Johannes Berg 已提交
27 28
 *
 * Contact Information:
29
 *  Intel Linux Wireless <linuxwifi@intel.com>
J
Johannes Berg 已提交
30 31 32 33
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
34
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35
 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
36
 * Copyright(c) 2016 Intel Deutschland GmbH
J
Johannes Berg 已提交
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include <linux/module.h>
67
#include <linux/vmalloc.h>
J
Johannes Berg 已提交
68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
#include <net/mac80211.h>

#include "iwl-notif-wait.h"
#include "iwl-trans.h"
#include "iwl-op-mode.h"
#include "iwl-fw.h"
#include "iwl-debug.h"
#include "iwl-drv.h"
#include "iwl-modparams.h"
#include "mvm.h"
#include "iwl-phy-db.h"
#include "iwl-eeprom-parse.h"
#include "iwl-csr.h"
#include "iwl-io.h"
#include "iwl-prph.h"
#include "rs.h"
#include "fw-api-scan.h"
#include "time-event.h"
86
#include "fw-dbg.h"
87 88
#include "fw-api.h"
#include "fw-api-scan.h"
J
Johannes Berg 已提交
89 90 91 92 93 94 95

#define DRV_DESCRIPTION	"The new Intel(R) wireless AGN driver for Linux"
MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
MODULE_LICENSE("GPL");

static const struct iwl_op_mode_ops iwl_mvm_ops;
96
static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
J
Johannes Berg 已提交
97 98 99

struct iwl_mvm_mod_params iwlmvm_mod_params = {
	.power_scheme = IWL_POWER_SCHEME_BPS,
100
	.tfd_q_hang_detect = true
J
Johannes Berg 已提交
101 102 103 104 105 106 107 108 109
	/* rest of fields are 0 by default */
};

module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
MODULE_PARM_DESC(init_dbg,
		 "set to true to debug an ASSERT in INIT fw (default: false");
module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
MODULE_PARM_DESC(power_scheme,
		 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
110 111 112 113
module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
		   bool, S_IRUGO);
MODULE_PARM_DESC(tfd_q_hang_detect,
		 "TFD queues hang detection (default: true");
J
Johannes Berg 已提交
114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150

/*
 * module init and exit functions
 */
static int __init iwl_mvm_init(void)
{
	int ret;

	ret = iwl_mvm_rate_control_register();
	if (ret) {
		pr_err("Unable to register rate control algorithm: %d\n", ret);
		return ret;
	}

	ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);

	if (ret) {
		pr_err("Unable to register MVM op_mode: %d\n", ret);
		iwl_mvm_rate_control_unregister();
	}

	return ret;
}
module_init(iwl_mvm_init);

static void __exit iwl_mvm_exit(void)
{
	iwl_opmode_deregister("iwlmvm");
	iwl_mvm_rate_control_unregister();
}
module_exit(iwl_mvm_exit);

static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
	u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
	u32 reg_val = 0;
151 152 153 154 155 156 157 158
	u32 phy_config = iwl_mvm_get_phy_config(mvm);

	radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
			 FW_PHY_CFG_RADIO_TYPE_POS;
	radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
			 FW_PHY_CFG_RADIO_STEP_POS;
	radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
			 FW_PHY_CFG_RADIO_DASH_POS;
J
Johannes Berg 已提交
159 160 161 162 163 164 165 166 167 168 169 170 171 172 173

	/* SKU control */
	reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
				CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
	reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
				CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;

	/* radio configuration */
	reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
	reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
	reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;

	WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
		 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);

174 175 176 177 178 179 180 181 182
	/*
	 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
	 * shouldn't be set to any non-zero value. The same is supposed to be
	 * true of the other HW, but unsetting them (such as the 7260) causes
	 * automatic tests to fail on seemingly unrelated errors. Need to
	 * further investigate this, but for now we'll separate cases.
	 */
	if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
		reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
J
Johannes Berg 已提交
183

184 185 186 187 188 189 190 191 192
	iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
				CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
				CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
				CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
				CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
				CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
				CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
				CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
				reg_val);
J
Johannes Berg 已提交
193 194 195 196 197 198 199 200 201

	IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
		       radio_cfg_step, radio_cfg_dash);

	/*
	 * W/A : NIC is stuck in a reset state after Early PCIe power off
	 * (PCIe power is lost before PERST# is asserted), causing ME FW
	 * to lose ownership and not being able to obtain it back.
	 */
202
	if (!mvm->trans->cfg->apmg_not_supported)
203 204 205
		iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
				       APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
				       ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
J
Johannes Berg 已提交
206 207
}

208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229
/**
 * enum iwl_rx_handler_context context for Rx handler
 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
 *	which can't acquire mvm->mutex.
 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
 *	(and only in this case!), it should be set as ASYNC. In that case,
 *	it will be called from a worker with mvm->mutex held.
 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
 *	mutex itself, it will be called from a worker without mvm->mutex held.
 */
enum iwl_rx_handler_context {
	RX_HANDLER_SYNC,
	RX_HANDLER_ASYNC_LOCKED,
	RX_HANDLER_ASYNC_UNLOCKED,
};

/**
 * struct iwl_rx_handlers handler for FW notification
 * @cmd_id: command id
 * @context: see &iwl_rx_handler_context
 * @fn: the function is called when notification is received
 */
J
Johannes Berg 已提交
230
struct iwl_rx_handlers {
231
	u16 cmd_id;
232
	enum iwl_rx_handler_context context;
233
	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
J
Johannes Berg 已提交
234 235
};

236 237 238 239
#define RX_HANDLER(_cmd_id, _fn, _context)	\
	{ .cmd_id = _cmd_id, .fn = _fn, .context = _context }
#define RX_HANDLER_GRP(_grp, _cmd, _fn, _context)	\
	{ .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
J
Johannes Berg 已提交
240 241 242 243 244 245

/*
 * Handlers for fw notifications
 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
 * This list should be in order of frequency for performance purposes.
 *
246
 * The handler can be one from three contexts, see &iwl_rx_handler_context
J
Johannes Berg 已提交
247 248
 */
static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
249 250 251 252 253 254 255 256 257
	RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
	RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),

	RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
		   RX_HANDLER_ASYNC_LOCKED),
	RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
		   RX_HANDLER_ASYNC_LOCKED),
	RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
		   RX_HANDLER_ASYNC_LOCKED),
258
	RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
259
		   iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED),
260

261
	RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
262
		   iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
263

264 265 266 267
	RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
		   RX_HANDLER_SYNC),
	RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
		   RX_HANDLER_ASYNC_LOCKED),
268

269
	RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
270

271
	RX_HANDLER(SCAN_ITERATION_COMPLETE,
272
		   iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
273
	RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
274 275
		   iwl_mvm_rx_lmac_scan_complete_notif,
		   RX_HANDLER_ASYNC_LOCKED),
276
	RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
277
		   RX_HANDLER_SYNC),
278
	RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
279
		   RX_HANDLER_ASYNC_LOCKED),
280
	RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
281
		   iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
282

283 284
	RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
		   RX_HANDLER_SYNC),
J
Johannes Berg 已提交
285

286
	RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
287
		   RX_HANDLER_SYNC),
288

289
	RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
290
	RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
291 292 293
		   iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
	RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
		   RX_HANDLER_ASYNC_LOCKED),
294
	RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
295
		       iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
296
	RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
297
		       iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
298

299
	RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
300 301 302 303 304
		   RX_HANDLER_ASYNC_LOCKED),
	RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
		   RX_HANDLER_SYNC),
	RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
		   RX_HANDLER_ASYNC_LOCKED),
305 306
	RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
		       iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
307
	RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
308
		       iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
309
	RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
310
		       iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
311 312
	RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
		       iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
J
Johannes Berg 已提交
313 314
};
#undef RX_HANDLER
315
#undef RX_HANDLER_GRP
316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333

/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
	HCMD_NAME(MVM_ALIVE),
	HCMD_NAME(REPLY_ERROR),
	HCMD_NAME(ECHO_CMD),
	HCMD_NAME(INIT_COMPLETE_NOTIF),
	HCMD_NAME(PHY_CONTEXT_CMD),
	HCMD_NAME(DBG_CFG),
	HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION),
	HCMD_NAME(SCAN_CFG_CMD),
	HCMD_NAME(SCAN_REQ_UMAC),
	HCMD_NAME(SCAN_ABORT_UMAC),
	HCMD_NAME(SCAN_COMPLETE_UMAC),
	HCMD_NAME(TOF_CMD),
	HCMD_NAME(TOF_NOTIFICATION),
334
	HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365
	HCMD_NAME(ADD_STA_KEY),
	HCMD_NAME(ADD_STA),
	HCMD_NAME(REMOVE_STA),
	HCMD_NAME(FW_GET_ITEM_CMD),
	HCMD_NAME(TX_CMD),
	HCMD_NAME(SCD_QUEUE_CFG),
	HCMD_NAME(TXPATH_FLUSH),
	HCMD_NAME(MGMT_MCAST_KEY),
	HCMD_NAME(WEP_KEY),
	HCMD_NAME(SHARED_MEM_CFG),
	HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
	HCMD_NAME(MAC_CONTEXT_CMD),
	HCMD_NAME(TIME_EVENT_CMD),
	HCMD_NAME(TIME_EVENT_NOTIFICATION),
	HCMD_NAME(BINDING_CONTEXT_CMD),
	HCMD_NAME(TIME_QUOTA_CMD),
	HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
	HCMD_NAME(LQ_CMD),
	HCMD_NAME(FW_PAGING_BLOCK_CMD),
	HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
	HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
	HCMD_NAME(HOT_SPOT_CMD),
	HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
	HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
	HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
	HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
	HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
	HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
	HCMD_NAME(BT_COEX_CI),
	HCMD_NAME(PHY_CONFIGURATION_CMD),
	HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
366
	HCMD_NAME(PHY_DB_CMD),
367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390
	HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
	HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
	HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
	HCMD_NAME(POWER_TABLE_CMD),
	HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
	HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
	HCMD_NAME(DC2DC_CONFIG_CMD),
	HCMD_NAME(NVM_ACCESS_CMD),
	HCMD_NAME(SET_CALIB_DEFAULT_CMD),
	HCMD_NAME(BEACON_NOTIFICATION),
	HCMD_NAME(BEACON_TEMPLATE_CMD),
	HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
	HCMD_NAME(BT_CONFIG),
	HCMD_NAME(STATISTICS_CMD),
	HCMD_NAME(STATISTICS_NOTIFICATION),
	HCMD_NAME(EOSP_NOTIFICATION),
	HCMD_NAME(REDUCE_TX_POWER_CMD),
	HCMD_NAME(CARD_STATE_CMD),
	HCMD_NAME(CARD_STATE_NOTIFICATION),
	HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
	HCMD_NAME(TDLS_CONFIG_CMD),
	HCMD_NAME(MAC_PM_POWER_TABLE),
	HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
	HCMD_NAME(MFUART_LOAD_NOTIFICATION),
391
	HCMD_NAME(RSS_CONFIG_CMD),
392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423
	HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
	HCMD_NAME(REPLY_RX_PHY_CMD),
	HCMD_NAME(REPLY_RX_MPDU_CMD),
	HCMD_NAME(BA_NOTIF),
	HCMD_NAME(MCC_UPDATE_CMD),
	HCMD_NAME(MCC_CHUB_UPDATE_CMD),
	HCMD_NAME(MARKER_CMD),
	HCMD_NAME(BT_COEX_PRIO_TABLE),
	HCMD_NAME(BT_COEX_PROT_ENV),
	HCMD_NAME(BT_PROFILE_NOTIFICATION),
	HCMD_NAME(BCAST_FILTER_CMD),
	HCMD_NAME(MCAST_FILTER_CMD),
	HCMD_NAME(REPLY_SF_CFG_CMD),
	HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
	HCMD_NAME(D3_CONFIG_CMD),
	HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
	HCMD_NAME(OFFLOADS_QUERY_CMD),
	HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
	HCMD_NAME(MATCH_FOUND_NOTIFICATION),
	HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
	HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
	HCMD_NAME(WOWLAN_PATTERNS),
	HCMD_NAME(WOWLAN_CONFIGURATION),
	HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
	HCMD_NAME(WOWLAN_TKIP_PARAM),
	HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
	HCMD_NAME(WOWLAN_GET_STATUSES),
	HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
	HCMD_NAME(SCAN_ITERATION_COMPLETE),
	HCMD_NAME(D0I3_END_CMD),
	HCMD_NAME(LTR_CONFIG),
	HCMD_NAME(REPLY_DEBUG_CMD),
J
Johannes Berg 已提交
424
};
425

426 427 428 429 430 431 432
/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
	HCMD_NAME(SHARED_MEM_CFG_CMD),
};

433 434 435 436 437 438
/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
	HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
	HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
439
	HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
440 441
};

442 443 444 445 446
/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
	HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
447
	HCMD_NAME(CTDP_CONFIG_CMD),
448
	HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
449
	HCMD_NAME(GEO_TX_POWER_LIMIT),
450
	HCMD_NAME(CT_KILL_NOTIFICATION),
451 452 453
	HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
};

454 455 456 457
/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
458
	HCMD_NAME(DQA_ENABLE_CMD),
459
	HCMD_NAME(UPDATE_MU_GROUPS_CMD),
460
	HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
461
	HCMD_NAME(STA_PM_NOTIF),
462
	HCMD_NAME(MU_GROUP_MGMT_NOTIF),
463
	HCMD_NAME(RX_QUEUES_NOTIFICATION),
464 465
};

466 467 468 469 470 471 472
/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
	HCMD_NAME(MFU_ASSERT_DUMP_NTF),
};

473 474 475 476 477 478 479
/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
	HCMD_NAME(STORED_BEACON_NTF),
};

480 481 482 483 484 485 486
/* Please keep this array *SORTED* by hex value.
 * Access is done through binary search
 */
static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
	HCMD_NAME(NVM_ACCESS_COMPLETE),
};

487 488 489
static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
	[LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
	[LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
490
	[SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
491
	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
492
	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
493
	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
494
	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
495 496
	[REGULATORY_AND_NVM_GROUP] =
		HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
497 498
};

J
Johannes Berg 已提交
499 500
/* this forward declaration can avoid to export the function */
static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
501
static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
J
Johannes Berg 已提交
502

503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519
static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
{
	const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;

	if (!pwr_tx_backoff)
		return 0;

	while (pwr_tx_backoff->pwr) {
		if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
			return pwr_tx_backoff->backoff;

		pwr_tx_backoff++;
	}

	return 0;
}

520 521
static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);

522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544
static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
{
	struct iwl_mvm *mvm =
		container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
	struct ieee80211_vif *tx_blocked_vif;
	struct iwl_mvm_vif *mvmvif;

	mutex_lock(&mvm->mutex);

	tx_blocked_vif =
		rcu_dereference_protected(mvm->csa_tx_blocked_vif,
					  lockdep_is_held(&mvm->mutex));

	if (!tx_blocked_vif)
		goto unlock;

	mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
	iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
	RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
unlock:
	mutex_unlock(&mvm->mutex);
}

J
Johannes Berg 已提交
545 546 547 548 549 550 551 552 553 554 555 556
static struct iwl_op_mode *
iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
		      const struct iwl_fw *fw, struct dentry *dbgfs_dir)
{
	struct ieee80211_hw *hw;
	struct iwl_op_mode *op_mode;
	struct iwl_mvm *mvm;
	struct iwl_trans_config trans_cfg = {};
	static const u8 no_reclaim_cmds[] = {
		TX_CMD,
	};
	int err, scan_size;
557
	u32 min_backoff;
J
Johannes Berg 已提交
558

559 560 561 562 563 564 565
	/*
	 * We use IWL_MVM_STATION_COUNT to check the validity of the station
	 * index all over the driver - check that its value corresponds to the
	 * array size.
	 */
	BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);

J
Johannes Berg 已提交
566 567 568 569 570 571 572 573 574
	/********************************
	 * 1. Allocating and configuring HW data
	 ********************************/
	hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
				sizeof(struct iwl_mvm),
				&iwl_mvm_hw_ops);
	if (!hw)
		return NULL;

575 576 577
	if (cfg->max_rx_agg_size)
		hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;

578 579 580
	if (cfg->max_tx_agg_size)
		hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;

J
Johannes Berg 已提交
581 582 583 584 585 586 587 588 589
	op_mode = hw->priv;

	mvm = IWL_OP_MODE_GET_MVM(op_mode);
	mvm->dev = trans->dev;
	mvm->trans = trans;
	mvm->cfg = cfg;
	mvm->fw = fw;
	mvm->hw = hw;

590 591
	if (iwl_mvm_has_new_rx_api(mvm)) {
		op_mode->ops = &iwl_mvm_ops_mq;
592
		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
593 594
	} else {
		op_mode->ops = &iwl_mvm_ops;
595 596
		trans->rx_mpdu_cmd_hdr_size =
			sizeof(struct iwl_rx_mpdu_res_start);
597 598 599 600 601

		if (WARN_ON(trans->num_rx_queues > 1))
			goto out_free;
	}

602 603
	mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;

604 605
	if (!iwl_mvm_is_dqa_supported(mvm)) {
		mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
606 607 608 609 610 611 612 613

		if (mvm->cfg->base_params->num_of_queues == 16) {
			mvm->aux_queue = 11;
			mvm->first_agg_queue = 12;
		} else {
			mvm->aux_queue = 15;
			mvm->first_agg_queue = 16;
		}
614
	} else {
615
		mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
616 617
		mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
		mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
618 619 620
		mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
		mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
	}
621
	mvm->sf_state = SF_UNINIT;
622 623 624 625
	if (iwl_mvm_has_new_tx_api(mvm))
		mvm->cur_ucode = IWL_UCODE_REGULAR;
	else
		mvm->cur_ucode = IWL_UCODE_INIT;
626
	mvm->drop_bcn_ap_mode = true;
627

J
Johannes Berg 已提交
628
	mutex_init(&mvm->mutex);
629
	mutex_init(&mvm->d0i3_suspend_mutex);
J
Johannes Berg 已提交
630 631
	spin_lock_init(&mvm->async_handlers_lock);
	INIT_LIST_HEAD(&mvm->time_event_list);
632
	INIT_LIST_HEAD(&mvm->aux_roc_te_list);
J
Johannes Berg 已提交
633 634
	INIT_LIST_HEAD(&mvm->async_handlers_list);
	spin_lock_init(&mvm->time_event_lock);
635
	spin_lock_init(&mvm->queue_info_lock);
J
Johannes Berg 已提交
636 637 638 639

	INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
	INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
	INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
640
	INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
641
	INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
642
	INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
643
	INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
644
	INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
J
Johannes Berg 已提交
645

646
	spin_lock_init(&mvm->d0i3_tx_lock);
647
	spin_lock_init(&mvm->refs_lock);
648 649
	skb_queue_head_init(&mvm->d0i3_tx);
	init_waitqueue_head(&mvm->d0i3_exit_waitq);
650
	init_waitqueue_head(&mvm->rx_sync_waitq);
651

652 653
	atomic_set(&mvm->queue_sync_counter, 0);

J
Johannes Berg 已提交
654 655
	SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);

656 657
	INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);

J
Johannes Berg 已提交
658 659 660 661 662 663 664
	/*
	 * Populate the state variables that the transport layer needs
	 * to know about.
	 */
	trans_cfg.op_mode = op_mode;
	trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
	trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
665
	switch (iwlwifi_mod_params.amsdu_size) {
666
	case IWL_AMSDU_DEF:
667 668 669 670 671 672 673 674 675 676 677 678 679 680
	case IWL_AMSDU_4K:
		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
		break;
	case IWL_AMSDU_8K:
		trans_cfg.rx_buf_size = IWL_AMSDU_8K;
		break;
	case IWL_AMSDU_12K:
		trans_cfg.rx_buf_size = IWL_AMSDU_12K;
		break;
	default:
		pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
		       iwlwifi_mod_params.amsdu_size);
		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
	}
681 682 683 684

	/* the hardware splits the A-MSDU */
	if (mvm->cfg->mq_rx_supported)
		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
J
Johannes Berg 已提交
685

686 687
	trans->wide_cmd_header = true;
	trans_cfg.bc_table_dword = true;
J
Johannes Berg 已提交
688

689 690
	trans_cfg.command_groups = iwl_mvm_groups;
	trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
J
Johannes Berg 已提交
691

692 693 694 695
	if (iwl_mvm_is_dqa_supported(mvm))
		trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
	else
		trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
696
	trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
697
	trans_cfg.scd_set_active = true;
J
Johannes Berg 已提交
698

699 700 701
	trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
					  driver_data[2]);

702
	trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
703
	trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
704

705 706
	/* Set a short watchdog for the command queue */
	trans_cfg.cmd_q_wdg_timeout =
707
		iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
708

J
Johannes Berg 已提交
709 710 711 712 713 714 715 716
	snprintf(mvm->hw->wiphy->fw_version,
		 sizeof(mvm->hw->wiphy->fw_version),
		 "%s", fw->fw_version);

	/* Configure transport layer */
	iwl_trans_configure(mvm->trans, &trans_cfg);

	trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
717 718 719 720
	trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
	trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
	memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
	       sizeof(trans->dbg_conf_tlv));
721
	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
J
Johannes Berg 已提交
722 723 724 725 726 727 728 729 730 731 732 733 734 735

	/* set up notification wait support */
	iwl_notification_wait_init(&mvm->notif_wait);

	/* Init phy db */
	mvm->phy_db = iwl_phy_db_init(trans);
	if (!mvm->phy_db) {
		IWL_ERR(mvm, "Cannot init phy_db\n");
		goto out_free;
	}

	IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
		 mvm->cfg->name, mvm->trans->hw_rev);

736
	if (iwlwifi_mod_params.nvm_file)
737
		mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
738 739 740
	else
		IWL_DEBUG_EEPROM(mvm->trans->dev,
				 "working without external nvm file\n");
741

742 743
	err = iwl_trans_start_hw(mvm->trans);
	if (err)
744 745
		goto out_free;

746 747
	mutex_lock(&mvm->mutex);
	iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
748 749 750 751
	if (iwl_mvm_has_new_tx_api(mvm))
		err = iwl_run_unified_mvm_ucode(mvm, true);
	else
		err = iwl_run_init_mvm_ucode(mvm, true);
752 753 754 755 756 757 758 759
	if (!err || !iwlmvm_mod_params.init_dbg)
		iwl_mvm_stop_device(mvm);
	iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
	mutex_unlock(&mvm->mutex);
	/* returns 0 if successful, 1 if success but in rfkill */
	if (err < 0 && !iwlmvm_mod_params.init_dbg) {
		IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
		goto out_free;
J
Johannes Berg 已提交
760 761
	}

762
	scan_size = iwl_mvm_scan_size(mvm);
763

J
Johannes Berg 已提交
764 765 766 767
	mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
	if (!mvm->scan_cmd)
		goto out_free;

768 769 770
	/* Set EBS as successful as long as not stated otherwise by the FW. */
	mvm->last_ebs_successful = true;

J
Johannes Berg 已提交
771 772 773
	err = iwl_mvm_mac_setup_register(mvm);
	if (err)
		goto out_free;
774
	mvm->hw_registered = true;
J
Johannes Berg 已提交
775

776 777 778
	min_backoff = calc_min_backoff(trans, cfg);
	iwl_mvm_thermal_initialize(mvm, min_backoff);

J
Johannes Berg 已提交
779 780 781 782
	err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
	if (err)
		goto out_unregister;

783 784
	memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));

785 786 787 788
	/* The transport always starts with a taken reference, we can
	 * release it now if d0i3 is supported */
	if (iwl_mvm_is_d0i3_supported(mvm))
		iwl_trans_unref(mvm->trans);
789

790 791
	iwl_mvm_tof_init(mvm);

J
Johannes Berg 已提交
792 793 794 795
	return op_mode;

 out_unregister:
	ieee80211_unregister_hw(mvm->hw);
796
	mvm->hw_registered = false;
797
	iwl_mvm_leds_exit(mvm);
798
	iwl_mvm_thermal_exit(mvm);
J
Johannes Berg 已提交
799
 out_free:
800
	flush_delayed_work(&mvm->fw_dump_wk);
J
Johannes Berg 已提交
801 802
	iwl_phy_db_free(mvm->phy_db);
	kfree(mvm->scan_cmd);
803 804
	iwl_trans_op_mode_leave(trans);

J
Johannes Berg 已提交
805 806 807 808 809 810 811 812 813
	ieee80211_free_hw(mvm->hw);
	return NULL;
}

static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
	int i;

814 815 816 817 818 819 820
	/* If d0i3 is supported, we have released the reference that
	 * the transport started with, so we should take it back now
	 * that we are leaving.
	 */
	if (iwl_mvm_is_d0i3_supported(mvm))
		iwl_trans_ref(mvm->trans);

J
Johannes Berg 已提交
821 822
	iwl_mvm_leds_exit(mvm);

823
	iwl_mvm_thermal_exit(mvm);
824

J
Johannes Berg 已提交
825 826 827
	ieee80211_unregister_hw(mvm->hw);

	kfree(mvm->scan_cmd);
828 829
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = NULL;
J
Johannes Berg 已提交
830

831 832 833 834
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
	kfree(mvm->d3_resume_sram);
#endif

835
	iwl_trans_op_mode_leave(mvm->trans);
J
Johannes Berg 已提交
836 837 838 839 840

	iwl_phy_db_free(mvm->phy_db);
	mvm->phy_db = NULL;

	iwl_free_nvm_data(mvm->nvm_data);
841
	for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
J
Johannes Berg 已提交
842 843
		kfree(mvm->nvm_sections[i].data);

844 845
	iwl_mvm_tof_clean(mvm);

846 847 848
	mutex_destroy(&mvm->mutex);
	mutex_destroy(&mvm->d0i3_suspend_mutex);

J
Johannes Berg 已提交
849 850 851 852 853 854
	ieee80211_free_hw(mvm->hw);
}

struct iwl_async_handler_entry {
	struct list_head list;
	struct iwl_rx_cmd_buffer rxb;
855
	enum iwl_rx_handler_context context;
856
	void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
J
Johannes Berg 已提交
857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876
};

void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
{
	struct iwl_async_handler_entry *entry, *tmp;

	spin_lock_bh(&mvm->async_handlers_lock);
	list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
		iwl_free_rxb(&entry->rxb);
		list_del(&entry->list);
		kfree(entry);
	}
	spin_unlock_bh(&mvm->async_handlers_lock);
}

static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
{
	struct iwl_mvm *mvm =
		container_of(wk, struct iwl_mvm, async_handlers_wk);
	struct iwl_async_handler_entry *entry, *tmp;
877
	LIST_HEAD(local_list);
J
Johannes Berg 已提交
878 879 880 881 882 883 884 885 886 887 888 889

	/* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */

	/*
	 * Sync with Rx path with a lock. Remove all the entries from this list,
	 * add them to a local one (lock free), and then handle them.
	 */
	spin_lock_bh(&mvm->async_handlers_lock);
	list_splice_init(&mvm->async_handlers_list, &local_list);
	spin_unlock_bh(&mvm->async_handlers_lock);

	list_for_each_entry_safe(entry, tmp, &local_list, list) {
890 891
		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
			mutex_lock(&mvm->mutex);
892
		entry->fn(mvm, &entry->rxb);
J
Johannes Berg 已提交
893 894
		iwl_free_rxb(&entry->rxb);
		list_del(&entry->list);
895 896
		if (entry->context == RX_HANDLER_ASYNC_LOCKED)
			mutex_unlock(&mvm->mutex);
J
Johannes Berg 已提交
897 898 899 900
		kfree(entry);
	}
}

901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921
static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
					    struct iwl_rx_packet *pkt)
{
	struct iwl_fw_dbg_trigger_tlv *trig;
	struct iwl_fw_dbg_trigger_cmd *cmds_trig;
	int i;

	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
		return;

	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
	cmds_trig = (void *)trig->data;

	if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
		return;

	for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
		/* don't collect on CMD 0 */
		if (!cmds_trig->cmds[i].cmd_id)
			break;

922 923
		if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
		    cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
924 925
			continue;

926
		iwl_mvm_fw_dbg_collect_trig(mvm, trig,
927 928
					    "CMD 0x%02x.%02x received",
					    pkt->hdr.group_id, pkt->hdr.cmd);
929 930 931 932
		break;
	}
}

933 934 935
static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
			      struct iwl_rx_cmd_buffer *rxb,
			      struct iwl_rx_packet *pkt)
J
Johannes Berg 已提交
936
{
937
	int i;
938

939 940
	iwl_mvm_rx_check_trigger(mvm, pkt);

J
Johannes Berg 已提交
941 942 943 944 945 946 947 948 949
	/*
	 * Do the notification wait before RX handlers so
	 * even if the RX handler consumes the RXB we have
	 * access to it in the notification wait entry.
	 */
	iwl_notification_wait_notify(&mvm->notif_wait, pkt);

	for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
		const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
950 951
		struct iwl_async_handler_entry *entry;

952
		if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
953 954
			continue;

955
		if (rx_h->context == RX_HANDLER_SYNC) {
956
			rx_h->fn(mvm, rxb);
957
			return;
958
		}
959 960 961 962

		entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
		/* we can't do much... */
		if (!entry)
963
			return;
964 965 966 967 968

		entry->rxb._page = rxb_steal_page(rxb);
		entry->rxb._offset = rxb->_offset;
		entry->rxb._rx_page_order = rxb->_rx_page_order;
		entry->fn = rx_h->fn;
969
		entry->context = rx_h->context;
970 971 972 973 974
		spin_lock(&mvm->async_handlers_lock);
		list_add_tail(&entry->list, &mvm->async_handlers_list);
		spin_unlock(&mvm->async_handlers_lock);
		schedule_work(&mvm->async_handlers_wk);
		break;
J
Johannes Berg 已提交
975 976 977
	}
}

978 979 980 981 982 983
static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
		       struct napi_struct *napi,
		       struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
984
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
985

986
	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
987
		iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
988
	else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
989 990 991 992 993 994 995 996 997 998 999
		iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
	else
		iwl_mvm_rx_common(mvm, rxb, pkt);
}

static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
			  struct napi_struct *napi,
			  struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1000
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1001

1002
	if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1003
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1004 1005
	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
					 RX_QUEUES_NOTIFICATION)))
1006
		iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1007
	else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1008
		iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1009 1010 1011 1012
	else
		iwl_mvm_rx_common(mvm, rxb, pkt);
}

1013
void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
J
Johannes Berg 已提交
1014
{
1015
	int q;
J
Johannes Berg 已提交
1016

1017
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
1018 1019
		return;

1020 1021 1022
	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
		if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
			IWL_DEBUG_TX_QUEUES(mvm,
1023
					    "mac80211 %d already stopped\n", q);
1024 1025 1026 1027 1028
			continue;
		}

		ieee80211_stop_queue(mvm->hw, q);
	}
J
Johannes Berg 已提交
1029 1030
}

1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042
static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
			     const struct iwl_device_cmd *cmd)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

	/*
	 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
	 * commands that need to block the Tx queues.
	 */
	iwl_trans_block_txq_ptrs(mvm->trans, false);
}

1043
static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
J
Johannes Berg 已提交
1044 1045
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1046
	unsigned long mq;
J
Johannes Berg 已提交
1047

1048
	spin_lock_bh(&mvm->queue_info_lock);
1049
	mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1050
	spin_unlock_bh(&mvm->queue_info_lock);
J
Johannes Berg 已提交
1051

1052 1053 1054 1055 1056 1057 1058
	iwl_mvm_stop_mac_queues(mvm, mq);
}

void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
{
	int q;

1059
	if (WARN_ON_ONCE(!mq))
J
Johannes Berg 已提交
1060 1061
		return;

1062 1063 1064
	for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
		if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
			IWL_DEBUG_TX_QUEUES(mvm,
1065
					    "mac80211 %d still stopped\n", q);
1066 1067 1068 1069 1070
			continue;
		}

		ieee80211_wake_queue(mvm->hw, q);
	}
J
Johannes Berg 已提交
1071 1072
}

1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084
static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
	unsigned long mq;

	spin_lock_bh(&mvm->queue_info_lock);
	mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
	spin_unlock_bh(&mvm->queue_info_lock);

	iwl_mvm_start_mac_queues(mvm, mq);
}

1085 1086 1087 1088 1089 1090 1091 1092 1093 1094
void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
{
	if (state)
		set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
	else
		clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);

	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
}

1095
static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
J
Johannes Berg 已提交
1096 1097
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1098
	bool calibrating = ACCESS_ONCE(mvm->calibrating);
J
Johannes Berg 已提交
1099 1100 1101 1102 1103 1104

	if (state)
		set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
	else
		clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);

1105
	wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1106

1107 1108 1109 1110 1111 1112 1113 1114 1115
	/* iwl_run_init_mvm_ucode is waiting for results, abort it */
	if (calibrating)
		iwl_abort_notification_waits(&mvm->notif_wait);

	/*
	 * Stop the device if we run OPERATIONAL firmware or if we are in the
	 * middle of the calibrations.
	 */
	return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
J
Johannes Berg 已提交
1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127
}

static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
	struct ieee80211_tx_info *info;

	info = IEEE80211_SKB_CB(skb);
	iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
	ieee80211_free_txskb(mvm->hw, skb);
}

1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143
struct iwl_mvm_reprobe {
	struct device *dev;
	struct work_struct work;
};

static void iwl_mvm_reprobe_wk(struct work_struct *wk)
{
	struct iwl_mvm_reprobe *reprobe;

	reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
	if (device_reprobe(reprobe->dev))
		dev_err(reprobe->dev, "reprobe failed!\n");
	kfree(reprobe);
	module_put(THIS_MODULE);
}

1144 1145 1146
static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
{
	struct iwl_mvm *mvm =
1147
		container_of(work, struct iwl_mvm, fw_dump_wk.work);
1148

1149 1150 1151
	if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
		return;

1152
	mutex_lock(&mvm->mutex);
1153 1154 1155 1156 1157 1158 1159 1160 1161 1162

	/* stop recording */
	if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
		iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
	} else {
		iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
		/* wait before we collect the data till the DBGC stop */
		udelay(100);
	}

1163
	iwl_mvm_fw_error_dump(mvm);
1164 1165 1166

	/* start recording again if the firmware is not crashed */
	WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
E
Emmanuel Grumbach 已提交
1167 1168
		     mvm->fw->dbg_dest_tlv &&
		     iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1169

1170
	mutex_unlock(&mvm->mutex);
1171 1172

	iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1173 1174
}

1175
void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
J
Johannes Berg 已提交
1176 1177 1178
{
	iwl_abort_notification_waits(&mvm->notif_wait);

1179 1180 1181 1182 1183 1184 1185 1186 1187 1188
	/*
	 * This is a bit racy, but worst case we tell mac80211 about
	 * a stopped/aborted scan when that was already done which
	 * is not a problem. It is necessary to abort any os scan
	 * here because mac80211 requires having the scan cleared
	 * before restarting.
	 * We'll reset the scan_status to NONE in restart cleanup in
	 * the next start() call from mac80211. If restart isn't called
	 * (no fw restart) scan status will stay busy.
	 */
1189
	iwl_mvm_report_scan_aborted(mvm);
1190

J
Johannes Berg 已提交
1191 1192 1193 1194 1195 1196
	/*
	 * If we're restarting already, don't cycle restarts.
	 * If INIT fw asserted, it will likely fail again.
	 * If WoWLAN fw asserted, don't restart either, mac80211
	 * can't recover this since we're already half suspended.
	 */
1197
	if (!mvm->restart_fw && fw_error) {
1198 1199
		iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
					    NULL);
1200 1201
	} else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
				    &mvm->status)) {
1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224
		struct iwl_mvm_reprobe *reprobe;

		IWL_ERR(mvm,
			"Firmware error during reconfiguration - reprobe!\n");

		/*
		 * get a module reference to avoid doing this while unloading
		 * anyway and to avoid scheduling a work with code that's
		 * being removed.
		 */
		if (!try_module_get(THIS_MODULE)) {
			IWL_ERR(mvm, "Module is being unloaded - abort\n");
			return;
		}

		reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
		if (!reprobe) {
			module_put(THIS_MODULE);
			return;
		}
		reprobe->dev = mvm->trans->dev;
		INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
		schedule_work(&reprobe->work);
1225 1226
	} else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
		   mvm->hw_registered) {
1227 1228 1229
		/* don't let the transport/FW power down */
		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);

1230
		if (fw_error && mvm->restart_fw > 0)
1231
			mvm->restart_fw--;
J
Johannes Berg 已提交
1232 1233 1234 1235
		ieee80211_restart_hw(mvm->hw);
	}
}

1236 1237 1238 1239 1240
static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

	iwl_mvm_dump_nic_error_log(mvm);
1241

1242
	iwl_mvm_nic_restart(mvm, true);
1243 1244
}

J
Johannes Berg 已提交
1245 1246
static 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);

J
Johannes Berg 已提交
1249
	WARN_ON(1);
1250
	iwl_mvm_nic_restart(mvm, true);
J
Johannes Berg 已提交
1251 1252
}

1253 1254
struct iwl_d0i3_iter_data {
	struct iwl_mvm *mvm;
1255
	struct ieee80211_vif *connected_vif;
1256 1257
	u8 ap_sta_id;
	u8 vif_count;
1258 1259
	u8 offloading_tid;
	bool disable_offloading;
1260 1261
};

1262 1263 1264 1265 1266 1267 1268 1269 1270 1271
static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
					struct iwl_d0i3_iter_data *iter_data)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm_sta *mvmsta;
	u32 available_tids = 0;
	u8 tid;

	if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1272
		    mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1273 1274
		return false;

1275 1276
	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
	if (!mvmsta)
1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311
		return false;

	spin_lock_bh(&mvmsta->lock);
	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];

		/*
		 * in case of pending tx packets, don't use this tid
		 * for offloading in order to prevent reuse of the same
		 * qos seq counters.
		 */
		if (iwl_mvm_tid_queued(tid_data))
			continue;

		if (tid_data->state != IWL_AGG_OFF)
			continue;

		available_tids |= BIT(tid);
	}
	spin_unlock_bh(&mvmsta->lock);

	/*
	 * disallow protocol offloading if we have no available tid
	 * (with no pending frames and no active aggregation,
	 * as we don't handle "holes" properly - the scheduler needs the
	 * frame's seq number and TFD index to match)
	 */
	if (!available_tids)
		return true;

	/* for simplicity, just use the first available tid */
	iter_data->offloading_tid = ffs(available_tids) - 1;
	return false;
}

1312 1313 1314
static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
{
1315 1316 1317
	struct iwl_d0i3_iter_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1318 1319 1320 1321 1322 1323 1324
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;

	IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
	if (vif->type != NL80211_IFTYPE_STATION ||
	    !vif->bss_conf.assoc)
		return;

1325 1326 1327 1328 1329 1330 1331 1332
	/*
	 * in case of pending tx packets or active aggregations,
	 * avoid offloading features in order to prevent reuse of
	 * the same qos seq counters.
	 */
	if (iwl_mvm_disallow_offloading(mvm, vif, data))
		data->disable_offloading = true;

1333
	iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1334 1335
	iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
				   false, flags);
1336 1337 1338 1339 1340 1341 1342

	/*
	 * on init/association, mvm already configures POWER_TABLE_CMD
	 * and REPLY_MCAST_FILTER_CMD, so currently don't
	 * reconfigure them (we might want to use different
	 * params later on, though).
	 */
1343 1344
	data->ap_sta_id = mvmvif->ap_sta_id;
	data->vif_count++;
1345 1346 1347 1348 1349 1350

	/*
	 * no new commands can be sent at this stage, so it's safe
	 * to save the vif pointer during d0i3 entrance.
	 */
	data->connected_vif = vif;
1351 1352
}

1353
static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1354
				    struct iwl_wowlan_config_cmd *cmd,
1355 1356 1357 1358 1359
				    struct iwl_d0i3_iter_data *iter_data)
{
	struct ieee80211_sta *ap_sta;
	struct iwl_mvm_sta *mvm_ap_sta;

1360
	if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1361 1362 1363 1364 1365 1366 1367 1368 1369
		return;

	rcu_read_lock();

	ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
	if (IS_ERR_OR_NULL(ap_sta))
		goto out;

	mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1370
	cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1371
	cmd->offloading_tid = iter_data->offloading_tid;
S
Sara Sharon 已提交
1372
	cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1373
		ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1374 1375 1376 1377
	/*
	 * The d0i3 uCode takes care of the nonqos counters,
	 * so configure only the qos seq ones.
	 */
1378
	iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1379 1380 1381
out:
	rcu_read_unlock();
}
1382 1383

int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
E
Eliad Peller 已提交
1384 1385
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1386
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1387
	int ret;
1388 1389 1390
	struct iwl_d0i3_iter_data d0i3_iter_data = {
		.mvm = mvm,
	};
1391 1392 1393
	struct iwl_wowlan_config_cmd wowlan_config_cmd = {
		.wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
					     IWL_WOWLAN_WAKEUP_BEACON_MISS |
1394
					     IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1395
	};
1396 1397
	struct iwl_d3_manager_config d3_cfg_cmd = {
		.min_sleep_time = cpu_to_le32(1000),
1398
		.wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1399
	};
E
Eliad Peller 已提交
1400 1401

	IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1402

1403 1404 1405
	if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
		return -EINVAL;

1406 1407
	set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

1408 1409 1410 1411 1412 1413 1414 1415 1416
	/*
	 * iwl_mvm_ref_sync takes a reference before checking the flag.
	 * so by checking there is no held reference we prevent a state
	 * in which iwl_mvm_ref_sync continues successfully while we
	 * configure the firmware to enter d0i3
	 */
	if (iwl_mvm_ref_taken(mvm)) {
		IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
		clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1417
		wake_up(&mvm->d0i3_exit_waitq);
1418 1419 1420
		return 1;
	}

1421 1422 1423
	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_enter_d0i3_iterator,
1424 1425 1426
						   &d0i3_iter_data);
	if (d0i3_iter_data.vif_count == 1) {
		mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1427
		mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1428 1429
	} else {
		WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1430
		mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1431
		mvm->d0i3_offloading = false;
1432
	}
1433

1434 1435 1436
	/* make sure we have no running tx while configuring the seqno */
	synchronize_net();

1437 1438 1439 1440 1441
	/* Flush the hw queues, in case something got queued during entry */
	ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
	if (ret)
		return ret;

1442
	/* configure wowlan configuration only if needed */
1443
	if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1444 1445 1446 1447 1448 1449
		/* wake on beacons only if beacon storing isn't supported */
		if (!fw_has_capa(&mvm->fw->ucode_capa,
				 IWL_UCODE_TLV_CAPA_BEACON_STORING))
			wowlan_config_cmd.wakeup_filter |=
				cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);

1450 1451 1452 1453
		iwl_mvm_wowlan_config_key_params(mvm,
						 d0i3_iter_data.connected_vif,
						 true, flags);

1454 1455 1456 1457 1458 1459 1460 1461 1462
		iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
					&d0i3_iter_data);

		ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
					   sizeof(wowlan_config_cmd),
					   &wowlan_config_cmd);
		if (ret)
			return ret;
	}
1463

1464 1465 1466
	return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
				    flags | CMD_MAKE_TRANS_IDLE,
				    sizeof(d3_cfg_cmd), &d3_cfg_cmd);
E
Eliad Peller 已提交
1467 1468
}

1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482
static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
				       struct ieee80211_vif *vif)
{
	struct iwl_mvm *mvm = _data;
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;

	IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
	if (vif->type != NL80211_IFTYPE_STATION ||
	    !vif->bss_conf.assoc)
		return;

	iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
}

1483
struct iwl_mvm_d0i3_exit_work_iter_data {
1484
	struct iwl_mvm *mvm;
1485
	struct iwl_wowlan_status *status;
1486 1487 1488
	u32 wakeup_reasons;
};

1489 1490
static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
					struct ieee80211_vif *vif)
1491
{
1492
	struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1493
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1494
	u32 reasons = data->wakeup_reasons;
1495

1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506
	/* consider only the relevant station interface */
	if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
	    data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
		return;

	if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
		iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
	else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
		ieee80211_beacon_loss(vif);
	else
		iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1507 1508
}

1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519
void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
{
	struct ieee80211_sta *sta = NULL;
	struct iwl_mvm_sta *mvm_ap_sta;
	int i;
	bool wake_queues = false;

	lockdep_assert_held(&mvm->mutex);

	spin_lock_bh(&mvm->d0i3_tx_lock);

1520
	if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536
		goto out;

	IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");

	/* get the sta in order to update seq numbers and re-enqueue skbs */
	sta = rcu_dereference_protected(
			mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
			lockdep_is_held(&mvm->mutex));

	if (IS_ERR_OR_NULL(sta)) {
		sta = NULL;
		goto out;
	}

	if (mvm->d0i3_offloading && qos_seq) {
		/* update qos seq numbers if offloading was enabled */
1537
		mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557
		for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
			u16 seq = le16_to_cpu(qos_seq[i]);
			/* firmware stores last-used one, we store next one */
			seq += 0x10;
			mvm_ap_sta->tid_data[i].seq_number = seq;
		}
	}
out:
	/* re-enqueue (or drop) all packets */
	while (!skb_queue_empty(&mvm->d0i3_tx)) {
		struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);

		if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
			ieee80211_free_txskb(mvm->hw, skb);

		/* if the skb_queue is not empty, we need to wake queues */
		wake_queues = true;
	}
	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
	wake_up(&mvm->d0i3_exit_waitq);
1558
	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1559 1560 1561 1562 1563 1564
	if (wake_queues)
		ieee80211_wake_queues(mvm->hw);

	spin_unlock_bh(&mvm->d0i3_tx_lock);
}

1565 1566 1567 1568 1569
static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
{
	struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
	struct iwl_host_cmd get_status_cmd = {
		.id = WOWLAN_GET_STATUSES,
E
Emmanuel Grumbach 已提交
1570
		.flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1571
	};
1572 1573 1574 1575
	struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
		.mvm = mvm,
	};

1576
	struct iwl_wowlan_status *status;
1577
	int ret;
1578
	u32 wakeup_reasons = 0;
1579
	__le16 *qos_seq = NULL;
1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590

	mutex_lock(&mvm->mutex);
	ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
	if (ret)
		goto out;

	if (!get_status_cmd.resp_pkt)
		goto out;

	status = (void *)get_status_cmd.resp_pkt->data;
	wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1591
	qos_seq = status->qos_seq_ctr;
1592 1593 1594

	IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);

1595 1596 1597 1598 1599 1600
	iter_data.wakeup_reasons = wakeup_reasons;
	iter_data.status = status;
	ieee80211_iterate_active_interfaces(mvm->hw,
					    IEEE80211_IFACE_ITER_NORMAL,
					    iwl_mvm_d0i3_exit_work_iter,
					    &iter_data);
1601
out:
1602
	iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1603

1604 1605 1606
	IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
		       wakeup_reasons);

1607 1608 1609 1610
	/* qos_seq might point inside resp_pkt, so free it only now */
	if (get_status_cmd.resp_pkt)
		iwl_free_resp(&get_status_cmd);

1611 1612 1613
	/* the FW might have updated the regdomain */
	iwl_mvm_update_changed_regdom(mvm);

1614
	iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1615 1616 1617
	mutex_unlock(&mvm->mutex);
}

1618
int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
E
Eliad Peller 已提交
1619
{
1620 1621
	u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
		    CMD_WAKE_UP_TRANS;
1622
	int ret;
E
Eliad Peller 已提交
1623 1624

	IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1625

1626 1627 1628
	if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
		return -EINVAL;

1629 1630 1631 1632 1633 1634 1635 1636 1637
	mutex_lock(&mvm->d0i3_suspend_mutex);
	if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
		IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
		__set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
		mutex_unlock(&mvm->d0i3_suspend_mutex);
		return 0;
	}
	mutex_unlock(&mvm->d0i3_suspend_mutex);

1638 1639
	ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
	if (ret)
1640
		goto out;
1641 1642 1643 1644 1645

	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   iwl_mvm_exit_d0i3_iterator,
						   mvm);
1646 1647 1648
out:
	schedule_work(&mvm->d0i3_exit_work);
	return ret;
E
Eliad Peller 已提交
1649 1650
}

1651
int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1652 1653 1654 1655 1656 1657 1658
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);

	iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
	return _iwl_mvm_exit_d0i3(mvm);
}

1659 1660
#define IWL_MVM_COMMON_OPS					\
	/* these could be differentiated */			\
1661
	.async_cb = iwl_mvm_async_cb,				\
1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674
	.queue_full = iwl_mvm_stop_sw_queue,			\
	.queue_not_full = iwl_mvm_wake_sw_queue,		\
	.hw_rf_kill = iwl_mvm_set_hw_rfkill_state,		\
	.free_skb = iwl_mvm_free_skb,				\
	.nic_error = iwl_mvm_nic_error,				\
	.cmd_queue_full = iwl_mvm_cmd_queue_full,		\
	.nic_config = iwl_mvm_nic_config,			\
	.enter_d0i3 = iwl_mvm_enter_d0i3,			\
	.exit_d0i3 = iwl_mvm_exit_d0i3,				\
	/* as we only register one, these MUST be common! */	\
	.start = iwl_op_mode_mvm_start,				\
	.stop = iwl_op_mode_mvm_stop

J
Johannes Berg 已提交
1675
static const struct iwl_op_mode_ops iwl_mvm_ops = {
1676 1677 1678 1679 1680 1681 1682 1683 1684 1685
	IWL_MVM_COMMON_OPS,
	.rx = iwl_mvm_rx,
};

static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
			      struct napi_struct *napi,
			      struct iwl_rx_cmd_buffer *rxb,
			      unsigned int queue)
{
	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1686
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1687
	u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1688

1689
	if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1690
		iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1691 1692
	else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
					 RX_QUEUES_NOTIFICATION)))
1693
		iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1694
	else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1695
		iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1696 1697 1698 1699 1700 1701
}

static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
	IWL_MVM_COMMON_OPS,
	.rx = iwl_mvm_rx_mq,
	.rx_rss = iwl_mvm_rx_mq_rss,
J
Johannes Berg 已提交
1702
};