1 /******************************************************************************
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.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
65 #include <linux/module.h>
66 #include <linux/vmalloc.h>
67 #include <net/mac80211.h>
69 #include "iwl-notif-wait.h"
70 #include "iwl-trans.h"
71 #include "iwl-op-mode.h"
73 #include "iwl-debug.h"
75 #include "iwl-modparams.h"
77 #include "iwl-phy-db.h"
78 #include "iwl-eeprom-parse.h"
83 #include "fw-api-scan.h"
84 #include "time-event.h"
86 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
88 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
89 MODULE_LICENSE("GPL");
91 static const struct iwl_op_mode_ops iwl_mvm_ops;
93 struct iwl_mvm_mod_params iwlmvm_mod_params = {
94 .power_scheme = IWL_POWER_SCHEME_BPS,
95 .tfd_q_hang_detect = true
96 /* rest of fields are 0 by default */
99 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
100 MODULE_PARM_DESC(init_dbg,
101 "set to true to debug an ASSERT in INIT fw (default: false");
102 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
103 MODULE_PARM_DESC(power_scheme,
104 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
105 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
107 MODULE_PARM_DESC(tfd_q_hang_detect,
108 "TFD queues hang detection (default: true");
111 * module init and exit functions
113 static int __init iwl_mvm_init(void)
117 ret = iwl_mvm_rate_control_register();
119 pr_err("Unable to register rate control algorithm: %d\n", ret);
123 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
126 pr_err("Unable to register MVM op_mode: %d\n", ret);
127 iwl_mvm_rate_control_unregister();
132 module_init(iwl_mvm_init);
134 static void __exit iwl_mvm_exit(void)
136 iwl_opmode_deregister("iwlmvm");
137 iwl_mvm_rate_control_unregister();
139 module_exit(iwl_mvm_exit);
141 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
143 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
144 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
146 u32 phy_config = iwl_mvm_get_phy_config(mvm);
148 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
149 FW_PHY_CFG_RADIO_TYPE_POS;
150 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
151 FW_PHY_CFG_RADIO_STEP_POS;
152 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
153 FW_PHY_CFG_RADIO_DASH_POS;
156 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
157 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
158 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
159 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
161 /* radio configuration */
162 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
163 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
164 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
166 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
167 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
170 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
171 * shouldn't be set to any non-zero value. The same is supposed to be
172 * true of the other HW, but unsetting them (such as the 7260) causes
173 * automatic tests to fail on seemingly unrelated errors. Need to
174 * further investigate this, but for now we'll separate cases.
176 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
177 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
179 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
180 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
181 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
182 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
183 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
184 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
185 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
186 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
189 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
190 radio_cfg_step, radio_cfg_dash);
193 * W/A : NIC is stuck in a reset state after Early PCIe power off
194 * (PCIe power is lost before PERST# is asserted), causing ME FW
195 * to lose ownership and not being able to obtain it back.
197 if (!mvm->trans->cfg->apmg_not_supported)
198 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
199 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
200 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
203 struct iwl_rx_handlers {
206 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
207 struct iwl_device_cmd *cmd);
210 #define RX_HANDLER(_cmd_id, _fn, _async) \
211 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
214 * Handlers for fw notifications
215 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
216 * This list should be in order of frequency for performance purposes.
218 * The handler can be SYNC - this means that it will be called in the Rx path
219 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
220 * only in this case!), it should be set as ASYNC. In that case, it will be
221 * called from a worker with mvm->mutex held.
223 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
224 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false),
225 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false),
226 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
227 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
229 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
230 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true),
231 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
232 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
233 iwl_mvm_rx_ant_coupling_notif, true),
235 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
236 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, true),
238 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
240 RX_HANDLER(SCAN_ITERATION_COMPLETE,
241 iwl_mvm_rx_lmac_scan_iter_complete_notif, false),
242 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
243 iwl_mvm_rx_lmac_scan_complete_notif, true),
244 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
246 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
248 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
249 iwl_mvm_rx_umac_scan_iter_complete_notif, false),
251 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
253 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
256 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
257 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
258 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
259 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true),
261 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
263 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, false),
267 #define CMD(x) [x] = #x
269 static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
272 CMD(INIT_COMPLETE_NOTIF),
273 CMD(PHY_CONTEXT_CMD),
278 CMD(MAC_CONTEXT_CMD),
280 CMD(TIME_EVENT_NOTIFICATION),
281 CMD(BINDING_CONTEXT_CMD),
283 CMD(NON_QOS_TX_COUNTER_CMD),
284 CMD(DC2DC_CONFIG_CMD),
286 CMD(PHY_CONFIGURATION_CMD),
287 CMD(CALIB_RES_NOTIF_PHY_DB),
288 CMD(SET_CALIB_DEFAULT_CMD),
293 CMD(SCAN_OFFLOAD_CONFIG_CMD),
294 CMD(MATCH_FOUND_NOTIFICATION),
295 CMD(SCAN_OFFLOAD_REQUEST_CMD),
296 CMD(SCAN_OFFLOAD_ABORT_CMD),
298 CMD(SCAN_OFFLOAD_COMPLETE),
299 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
300 CMD(SCAN_ITERATION_COMPLETE),
301 CMD(POWER_TABLE_CMD),
303 CMD(REPLY_RX_PHY_CMD),
304 CMD(REPLY_RX_MPDU_CMD),
305 CMD(BEACON_NOTIFICATION),
306 CMD(BEACON_TEMPLATE_CMD),
308 CMD(STATISTICS_NOTIFICATION),
309 CMD(EOSP_NOTIFICATION),
310 CMD(REDUCE_TX_POWER_CMD),
311 CMD(TX_ANT_CONFIGURATION_CMD),
314 CMD(PROT_OFFLOAD_CONFIG_CMD),
315 CMD(OFFLOADS_QUERY_CMD),
316 CMD(REMOTE_WAKE_CONFIG_CMD),
317 CMD(WOWLAN_PATTERNS),
318 CMD(WOWLAN_CONFIGURATION),
319 CMD(WOWLAN_TSC_RSC_PARAM),
320 CMD(WOWLAN_TKIP_PARAM),
321 CMD(WOWLAN_KEK_KCK_MATERIAL),
322 CMD(WOWLAN_GET_STATUSES),
323 CMD(WOWLAN_TX_POWER_PER_DB),
324 CMD(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
325 CMD(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
326 CMD(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
327 CMD(CARD_STATE_NOTIFICATION),
328 CMD(MISSED_BEACONS_NOTIFICATION),
329 CMD(BT_COEX_PRIO_TABLE),
330 CMD(BT_COEX_PROT_ENV),
331 CMD(BT_PROFILE_NOTIFICATION),
333 CMD(MCAST_FILTER_CMD),
334 CMD(BCAST_FILTER_CMD),
335 CMD(REPLY_SF_CFG_CMD),
336 CMD(REPLY_BEACON_FILTERING_CMD),
337 CMD(CMD_DTS_MEASUREMENT_TRIGGER),
338 CMD(DTS_MEASUREMENT_NOTIFICATION),
339 CMD(REPLY_THERMAL_MNG_BACKOFF),
340 CMD(MAC_PM_POWER_TABLE),
343 CMD(BT_COEX_UPDATE_SW_BOOST),
344 CMD(BT_COEX_UPDATE_CORUN_LUT),
345 CMD(BT_COEX_UPDATE_REDUCED_TXP),
346 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
347 CMD(ANTENNA_COUPLING_NOTIFICATION),
351 CMD(SCAN_ABORT_UMAC),
352 CMD(SCAN_COMPLETE_UMAC),
353 CMD(TDLS_CHANNEL_SWITCH_CMD),
354 CMD(TDLS_CHANNEL_SWITCH_NOTIFICATION),
355 CMD(TDLS_CONFIG_CMD),
357 CMD(SCAN_ITERATION_COMPLETE_UMAC),
361 /* this forward declaration can avoid to export the function */
362 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
363 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
365 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
367 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
372 while (pwr_tx_backoff->pwr) {
373 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
374 return pwr_tx_backoff->backoff;
382 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
384 static struct iwl_op_mode *
385 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
386 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
388 struct ieee80211_hw *hw;
389 struct iwl_op_mode *op_mode;
391 struct iwl_trans_config trans_cfg = {};
392 static const u8 no_reclaim_cmds[] = {
399 * We use IWL_MVM_STATION_COUNT to check the validity of the station
400 * index all over the driver - check that its value corresponds to the
403 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
405 /********************************
406 * 1. Allocating and configuring HW data
407 ********************************/
408 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
409 sizeof(struct iwl_mvm),
414 if (cfg->max_rx_agg_size)
415 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
417 if (cfg->max_tx_agg_size)
418 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
421 op_mode->ops = &iwl_mvm_ops;
423 mvm = IWL_OP_MODE_GET_MVM(op_mode);
424 mvm->dev = trans->dev;
430 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
433 mvm->first_agg_queue = 16;
434 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
435 if (mvm->cfg->base_params->num_of_queues == 16) {
437 mvm->first_agg_queue = 12;
439 mvm->sf_state = SF_UNINIT;
440 mvm->low_latency_agg_frame_limit = 6;
441 mvm->cur_ucode = IWL_UCODE_INIT;
443 mutex_init(&mvm->mutex);
444 mutex_init(&mvm->d0i3_suspend_mutex);
445 spin_lock_init(&mvm->async_handlers_lock);
446 INIT_LIST_HEAD(&mvm->time_event_list);
447 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
448 INIT_LIST_HEAD(&mvm->async_handlers_list);
449 spin_lock_init(&mvm->time_event_lock);
451 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
452 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
453 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
454 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
455 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
456 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
458 spin_lock_init(&mvm->d0i3_tx_lock);
459 spin_lock_init(&mvm->refs_lock);
460 skb_queue_head_init(&mvm->d0i3_tx);
461 init_waitqueue_head(&mvm->d0i3_exit_waitq);
463 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
466 * Populate the state variables that the transport layer needs
469 trans_cfg.op_mode = op_mode;
470 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
471 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
472 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
474 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
475 trans_cfg.bc_table_dword = true;
477 trans_cfg.command_names = iwl_mvm_cmd_strings;
479 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
480 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
481 trans_cfg.scd_set_active = true;
483 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
485 /* Set a short watchdog for the command queue */
486 trans_cfg.cmd_q_wdg_timeout =
487 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
489 snprintf(mvm->hw->wiphy->fw_version,
490 sizeof(mvm->hw->wiphy->fw_version),
491 "%s", fw->fw_version);
493 /* Configure transport layer */
494 iwl_trans_configure(mvm->trans, &trans_cfg);
496 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
497 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
498 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
499 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
500 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
501 sizeof(trans->dbg_conf_tlv));
502 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
504 /* set up notification wait support */
505 iwl_notification_wait_init(&mvm->notif_wait);
508 mvm->phy_db = iwl_phy_db_init(trans);
510 IWL_ERR(mvm, "Cannot init phy_db\n");
514 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
515 mvm->cfg->name, mvm->trans->hw_rev);
517 min_backoff = calc_min_backoff(trans, cfg);
518 iwl_mvm_tt_initialize(mvm, min_backoff);
520 if (iwlwifi_mod_params.nvm_file)
521 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
523 IWL_DEBUG_EEPROM(mvm->trans->dev,
524 "working without external nvm file\n");
526 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
527 "not allowing power-up and not having nvm_file\n"))
531 * Even if nvm exists in the nvm_file driver should read again the nvm
532 * from the nic because there might be entries that exist in the OTP
533 * and not in the file.
534 * for nics with no_power_up_nic_in_init: rely completley on nvm_file
536 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
537 err = iwl_nvm_init(mvm, false);
541 err = iwl_trans_start_hw(mvm->trans);
545 mutex_lock(&mvm->mutex);
546 err = iwl_run_init_mvm_ucode(mvm, true);
547 if (!err || !iwlmvm_mod_params.init_dbg)
548 iwl_trans_stop_device(trans);
549 mutex_unlock(&mvm->mutex);
550 /* returns 0 if successful, 1 if success but in rfkill */
551 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
552 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
557 scan_size = iwl_mvm_scan_size(mvm);
559 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
563 /* Set EBS as successful as long as not stated otherwise by the FW. */
564 mvm->last_ebs_successful = true;
566 err = iwl_mvm_mac_setup_register(mvm);
570 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
574 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
576 /* rpm starts with a taken ref. only set the appropriate bit here. */
577 mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1;
582 ieee80211_unregister_hw(mvm->hw);
583 iwl_mvm_leds_exit(mvm);
585 iwl_phy_db_free(mvm->phy_db);
586 kfree(mvm->scan_cmd);
587 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
588 iwl_trans_op_mode_leave(trans);
589 ieee80211_free_hw(mvm->hw);
593 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
595 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
598 iwl_mvm_leds_exit(mvm);
600 iwl_mvm_tt_exit(mvm);
602 ieee80211_unregister_hw(mvm->hw);
604 kfree(mvm->scan_cmd);
605 kfree(mvm->mcast_filter_cmd);
606 mvm->mcast_filter_cmd = NULL;
608 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
609 kfree(mvm->d3_resume_sram);
610 if (mvm->nd_config) {
611 kfree(mvm->nd_config->match_sets);
612 kfree(mvm->nd_config);
613 mvm->nd_config = NULL;
617 iwl_trans_op_mode_leave(mvm->trans);
619 iwl_phy_db_free(mvm->phy_db);
622 iwl_free_nvm_data(mvm->nvm_data);
623 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
624 kfree(mvm->nvm_sections[i].data);
626 ieee80211_free_hw(mvm->hw);
629 struct iwl_async_handler_entry {
630 struct list_head list;
631 struct iwl_rx_cmd_buffer rxb;
632 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
633 struct iwl_device_cmd *cmd);
636 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
638 struct iwl_async_handler_entry *entry, *tmp;
640 spin_lock_bh(&mvm->async_handlers_lock);
641 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
642 iwl_free_rxb(&entry->rxb);
643 list_del(&entry->list);
646 spin_unlock_bh(&mvm->async_handlers_lock);
649 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
651 struct iwl_mvm *mvm =
652 container_of(wk, struct iwl_mvm, async_handlers_wk);
653 struct iwl_async_handler_entry *entry, *tmp;
654 struct list_head local_list;
656 INIT_LIST_HEAD(&local_list);
658 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
659 mutex_lock(&mvm->mutex);
662 * Sync with Rx path with a lock. Remove all the entries from this list,
663 * add them to a local one (lock free), and then handle them.
665 spin_lock_bh(&mvm->async_handlers_lock);
666 list_splice_init(&mvm->async_handlers_list, &local_list);
667 spin_unlock_bh(&mvm->async_handlers_lock);
669 list_for_each_entry_safe(entry, tmp, &local_list, list) {
670 if (entry->fn(mvm, &entry->rxb, NULL))
672 "returned value from ASYNC handlers are ignored\n");
673 iwl_free_rxb(&entry->rxb);
674 list_del(&entry->list);
677 mutex_unlock(&mvm->mutex);
680 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
681 struct iwl_rx_packet *pkt)
683 struct iwl_fw_dbg_trigger_tlv *trig;
684 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
687 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
690 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
691 cmds_trig = (void *)trig->data;
693 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
696 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
697 /* don't collect on CMD 0 */
698 if (!cmds_trig->cmds[i].cmd_id)
701 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd)
704 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
705 "CMD 0x%02x received",
711 static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
712 struct iwl_rx_cmd_buffer *rxb,
713 struct iwl_device_cmd *cmd)
715 struct iwl_rx_packet *pkt = rxb_addr(rxb);
716 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
719 iwl_mvm_rx_check_trigger(mvm, pkt);
722 * Do the notification wait before RX handlers so
723 * even if the RX handler consumes the RXB we have
724 * access to it in the notification wait entry.
726 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
728 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
729 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
730 struct iwl_async_handler_entry *entry;
732 if (rx_h->cmd_id != pkt->hdr.cmd)
736 return rx_h->fn(mvm, rxb, cmd);
738 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
739 /* we can't do much... */
743 entry->rxb._page = rxb_steal_page(rxb);
744 entry->rxb._offset = rxb->_offset;
745 entry->rxb._rx_page_order = rxb->_rx_page_order;
746 entry->fn = rx_h->fn;
747 spin_lock(&mvm->async_handlers_lock);
748 list_add_tail(&entry->list, &mvm->async_handlers_list);
749 spin_unlock(&mvm->async_handlers_lock);
750 schedule_work(&mvm->async_handlers_wk);
757 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
759 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
760 int mq = mvm->queue_to_mac80211[queue];
762 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
765 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[mq]) > 1) {
766 IWL_DEBUG_TX_QUEUES(mvm,
767 "queue %d (mac80211 %d) already stopped\n",
772 ieee80211_stop_queue(mvm->hw, mq);
775 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
777 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
778 int mq = mvm->queue_to_mac80211[queue];
780 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
783 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[mq]) > 0) {
784 IWL_DEBUG_TX_QUEUES(mvm,
785 "queue %d (mac80211 %d) still stopped\n",
790 ieee80211_wake_queue(mvm->hw, mq);
793 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
796 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
798 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
800 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
803 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
805 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
806 bool calibrating = ACCESS_ONCE(mvm->calibrating);
809 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
811 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
813 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
815 /* iwl_run_init_mvm_ucode is waiting for results, abort it */
817 iwl_abort_notification_waits(&mvm->notif_wait);
820 * Stop the device if we run OPERATIONAL firmware or if we are in the
821 * middle of the calibrations.
823 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
826 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
828 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
829 struct ieee80211_tx_info *info;
831 info = IEEE80211_SKB_CB(skb);
832 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
833 ieee80211_free_txskb(mvm->hw, skb);
836 struct iwl_mvm_reprobe {
838 struct work_struct work;
841 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
843 struct iwl_mvm_reprobe *reprobe;
845 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
846 if (device_reprobe(reprobe->dev))
847 dev_err(reprobe->dev, "reprobe failed!\n");
849 module_put(THIS_MODULE);
852 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
854 struct iwl_mvm *mvm =
855 container_of(work, struct iwl_mvm, fw_dump_wk.work);
857 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
860 mutex_lock(&mvm->mutex);
863 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
864 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
866 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
867 /* wait before we collect the data till the DBGC stop */
871 iwl_mvm_fw_error_dump(mvm);
873 /* start recording again if the firmware is not crashed */
874 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
875 mvm->fw->dbg_dest_tlv &&
876 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
878 mutex_unlock(&mvm->mutex);
880 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
883 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
885 iwl_abort_notification_waits(&mvm->notif_wait);
888 * This is a bit racy, but worst case we tell mac80211 about
889 * a stopped/aborted scan when that was already done which
890 * is not a problem. It is necessary to abort any os scan
891 * here because mac80211 requires having the scan cleared
893 * We'll reset the scan_status to NONE in restart cleanup in
894 * the next start() call from mac80211. If restart isn't called
895 * (no fw restart) scan status will stay busy.
897 iwl_mvm_report_scan_aborted(mvm);
900 * If we're restarting already, don't cycle restarts.
901 * If INIT fw asserted, it will likely fail again.
902 * If WoWLAN fw asserted, don't restart either, mac80211
903 * can't recover this since we're already half suspended.
905 if (!mvm->restart_fw && fw_error) {
906 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 0);
907 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
909 struct iwl_mvm_reprobe *reprobe;
912 "Firmware error during reconfiguration - reprobe!\n");
915 * get a module reference to avoid doing this while unloading
916 * anyway and to avoid scheduling a work with code that's
919 if (!try_module_get(THIS_MODULE)) {
920 IWL_ERR(mvm, "Module is being unloaded - abort\n");
924 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
926 module_put(THIS_MODULE);
929 reprobe->dev = mvm->trans->dev;
930 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
931 schedule_work(&reprobe->work);
932 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
933 /* don't let the transport/FW power down */
934 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
936 if (fw_error && mvm->restart_fw > 0)
938 ieee80211_restart_hw(mvm->hw);
942 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
944 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
946 iwl_mvm_dump_nic_error_log(mvm);
948 iwl_mvm_nic_restart(mvm, true);
951 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
953 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
956 iwl_mvm_nic_restart(mvm, true);
959 struct iwl_d0i3_iter_data {
964 bool disable_offloading;
967 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
968 struct ieee80211_vif *vif,
969 struct iwl_d0i3_iter_data *iter_data)
971 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
972 struct ieee80211_sta *ap_sta;
973 struct iwl_mvm_sta *mvmsta;
974 u32 available_tids = 0;
977 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
978 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
981 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
982 if (IS_ERR_OR_NULL(ap_sta))
985 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
986 spin_lock_bh(&mvmsta->lock);
987 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
988 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
991 * in case of pending tx packets, don't use this tid
992 * for offloading in order to prevent reuse of the same
995 if (iwl_mvm_tid_queued(tid_data))
998 if (tid_data->state != IWL_AGG_OFF)
1001 available_tids |= BIT(tid);
1003 spin_unlock_bh(&mvmsta->lock);
1006 * disallow protocol offloading if we have no available tid
1007 * (with no pending frames and no active aggregation,
1008 * as we don't handle "holes" properly - the scheduler needs the
1009 * frame's seq number and TFD index to match)
1011 if (!available_tids)
1014 /* for simplicity, just use the first available tid */
1015 iter_data->offloading_tid = ffs(available_tids) - 1;
1019 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1020 struct ieee80211_vif *vif)
1022 struct iwl_d0i3_iter_data *data = _data;
1023 struct iwl_mvm *mvm = data->mvm;
1024 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1025 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1027 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1028 if (vif->type != NL80211_IFTYPE_STATION ||
1029 !vif->bss_conf.assoc)
1033 * in case of pending tx packets or active aggregations,
1034 * avoid offloading features in order to prevent reuse of
1035 * the same qos seq counters.
1037 if (iwl_mvm_disallow_offloading(mvm, vif, data))
1038 data->disable_offloading = true;
1040 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1041 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags);
1044 * on init/association, mvm already configures POWER_TABLE_CMD
1045 * and REPLY_MCAST_FILTER_CMD, so currently don't
1046 * reconfigure them (we might want to use different
1047 * params later on, though).
1049 data->ap_sta_id = mvmvif->ap_sta_id;
1053 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1054 struct iwl_wowlan_config_cmd *cmd,
1055 struct iwl_d0i3_iter_data *iter_data)
1057 struct ieee80211_sta *ap_sta;
1058 struct iwl_mvm_sta *mvm_ap_sta;
1060 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1065 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1066 if (IS_ERR_OR_NULL(ap_sta))
1069 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1070 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1071 cmd->offloading_tid = iter_data->offloading_tid;
1074 * The d0i3 uCode takes care of the nonqos counters,
1075 * so configure only the qos seq ones.
1077 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1082 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1084 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1085 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1087 struct iwl_d0i3_iter_data d0i3_iter_data = {
1090 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1091 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1092 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1093 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
1094 IWL_WOWLAN_WAKEUP_BCN_FILTERING),
1096 struct iwl_d3_manager_config d3_cfg_cmd = {
1097 .min_sleep_time = cpu_to_le32(1000),
1098 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1101 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1103 /* make sure we have no running tx while configuring the qos */
1104 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1108 * iwl_mvm_ref_sync takes a reference before checking the flag.
1109 * so by checking there is no held reference we prevent a state
1110 * in which iwl_mvm_ref_sync continues successfully while we
1111 * configure the firmware to enter d0i3
1113 if (iwl_mvm_ref_taken(mvm)) {
1114 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1115 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1116 wake_up(&mvm->d0i3_exit_waitq);
1120 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1121 IEEE80211_IFACE_ITER_NORMAL,
1122 iwl_mvm_enter_d0i3_iterator,
1124 if (d0i3_iter_data.vif_count == 1) {
1125 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1126 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1128 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1129 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1130 mvm->d0i3_offloading = false;
1133 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data);
1134 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1135 sizeof(wowlan_config_cmd),
1136 &wowlan_config_cmd);
1140 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1141 flags | CMD_MAKE_TRANS_IDLE,
1142 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1145 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1146 struct ieee80211_vif *vif)
1148 struct iwl_mvm *mvm = _data;
1149 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1151 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1152 if (vif->type != NL80211_IFTYPE_STATION ||
1153 !vif->bss_conf.assoc)
1156 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1159 static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac,
1160 struct ieee80211_vif *vif)
1162 struct iwl_mvm *mvm = data;
1163 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1165 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc &&
1166 mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1167 iwl_mvm_connection_loss(mvm, vif, "D0i3");
1170 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1172 struct ieee80211_sta *sta = NULL;
1173 struct iwl_mvm_sta *mvm_ap_sta;
1175 bool wake_queues = false;
1177 lockdep_assert_held(&mvm->mutex);
1179 spin_lock_bh(&mvm->d0i3_tx_lock);
1181 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1184 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1186 /* get the sta in order to update seq numbers and re-enqueue skbs */
1187 sta = rcu_dereference_protected(
1188 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1189 lockdep_is_held(&mvm->mutex));
1191 if (IS_ERR_OR_NULL(sta)) {
1196 if (mvm->d0i3_offloading && qos_seq) {
1197 /* update qos seq numbers if offloading was enabled */
1198 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1199 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1200 u16 seq = le16_to_cpu(qos_seq[i]);
1201 /* firmware stores last-used one, we store next one */
1203 mvm_ap_sta->tid_data[i].seq_number = seq;
1207 /* re-enqueue (or drop) all packets */
1208 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1209 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1211 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1212 ieee80211_free_txskb(mvm->hw, skb);
1214 /* if the skb_queue is not empty, we need to wake queues */
1217 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1218 wake_up(&mvm->d0i3_exit_waitq);
1219 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1221 ieee80211_wake_queues(mvm->hw);
1223 spin_unlock_bh(&mvm->d0i3_tx_lock);
1226 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1228 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1229 struct iwl_host_cmd get_status_cmd = {
1230 .id = WOWLAN_GET_STATUSES,
1231 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1233 struct iwl_wowlan_status *status;
1235 u32 disconnection_reasons, wakeup_reasons;
1236 __le16 *qos_seq = NULL;
1238 mutex_lock(&mvm->mutex);
1239 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1243 if (!get_status_cmd.resp_pkt)
1246 status = (void *)get_status_cmd.resp_pkt->data;
1247 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1248 qos_seq = status->qos_seq_ctr;
1250 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1252 disconnection_reasons =
1253 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1254 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1255 if (wakeup_reasons & disconnection_reasons)
1256 ieee80211_iterate_active_interfaces(
1257 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1258 iwl_mvm_d0i3_disconnect_iter, mvm);
1260 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1262 /* qos_seq might point inside resp_pkt, so free it only now */
1263 if (get_status_cmd.resp_pkt)
1264 iwl_free_resp(&get_status_cmd);
1266 /* the FW might have updated the regdomain */
1267 iwl_mvm_update_changed_regdom(mvm);
1269 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1270 mutex_unlock(&mvm->mutex);
1273 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1275 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1279 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1281 mutex_lock(&mvm->d0i3_suspend_mutex);
1282 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1283 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1284 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1285 mutex_unlock(&mvm->d0i3_suspend_mutex);
1288 mutex_unlock(&mvm->d0i3_suspend_mutex);
1290 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1294 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1295 IEEE80211_IFACE_ITER_NORMAL,
1296 iwl_mvm_exit_d0i3_iterator,
1299 schedule_work(&mvm->d0i3_exit_work);
1303 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1305 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1307 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1308 return _iwl_mvm_exit_d0i3(mvm);
1311 static void iwl_mvm_napi_add(struct iwl_op_mode *op_mode,
1312 struct napi_struct *napi,
1313 struct net_device *napi_dev,
1314 int (*poll)(struct napi_struct *, int),
1317 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1319 ieee80211_napi_add(mvm->hw, napi, napi_dev, poll, weight);
1322 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1323 .start = iwl_op_mode_mvm_start,
1324 .stop = iwl_op_mode_mvm_stop,
1325 .rx = iwl_mvm_rx_dispatch,
1326 .queue_full = iwl_mvm_stop_sw_queue,
1327 .queue_not_full = iwl_mvm_wake_sw_queue,
1328 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
1329 .free_skb = iwl_mvm_free_skb,
1330 .nic_error = iwl_mvm_nic_error,
1331 .cmd_queue_full = iwl_mvm_cmd_queue_full,
1332 .nic_config = iwl_mvm_nic_config,
1333 .enter_d0i3 = iwl_mvm_enter_d0i3,
1334 .exit_d0i3 = iwl_mvm_exit_d0i3,
1335 .napi_add = iwl_mvm_napi_add,