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 - 2013 Intel Corporation. All rights reserved.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
63 #include <linux/module.h>
64 #include <net/mac80211.h>
66 #include "iwl-notif-wait.h"
67 #include "iwl-trans.h"
68 #include "iwl-op-mode.h"
70 #include "iwl-debug.h"
72 #include "iwl-modparams.h"
74 #include "iwl-phy-db.h"
75 #include "iwl-eeprom-parse.h"
80 #include "fw-api-scan.h"
81 #include "time-event.h"
84 * module name, copyright, version, etc.
86 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
88 #define DRV_VERSION IWLWIFI_VERSION
90 MODULE_DESCRIPTION(DRV_DESCRIPTION);
91 MODULE_VERSION(DRV_VERSION);
92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
93 MODULE_LICENSE("GPL");
95 static const struct iwl_op_mode_ops iwl_mvm_ops;
97 struct iwl_mvm_mod_params iwlmvm_mod_params = {
98 .power_scheme = IWL_POWER_SCHEME_BPS,
99 /* rest of fields are 0 by default */
102 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
103 MODULE_PARM_DESC(init_dbg,
104 "set to true to debug an ASSERT in INIT fw (default: false");
105 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
106 MODULE_PARM_DESC(power_scheme,
107 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
110 * module init and exit functions
112 static int __init iwl_mvm_init(void)
116 ret = iwl_mvm_rate_control_register();
118 pr_err("Unable to register rate control algorithm: %d\n", ret);
122 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
125 pr_err("Unable to register MVM op_mode: %d\n", ret);
126 iwl_mvm_rate_control_unregister();
131 module_init(iwl_mvm_init);
133 static void __exit iwl_mvm_exit(void)
135 iwl_opmode_deregister("iwlmvm");
136 iwl_mvm_rate_control_unregister();
138 module_exit(iwl_mvm_exit);
140 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
142 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
143 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
146 radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >>
147 FW_PHY_CFG_RADIO_TYPE_POS;
148 radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >>
149 FW_PHY_CFG_RADIO_STEP_POS;
150 radio_cfg_dash = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_DASH) >>
151 FW_PHY_CFG_RADIO_DASH_POS;
154 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
155 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
156 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
157 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
159 /* radio configuration */
160 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
161 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
162 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
164 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
165 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
168 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
170 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
171 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
172 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
173 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
174 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
175 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
176 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
177 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
180 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
181 radio_cfg_step, radio_cfg_dash);
184 * W/A : NIC is stuck in a reset state after Early PCIe power off
185 * (PCIe power is lost before PERST# is asserted), causing ME FW
186 * to lose ownership and not being able to obtain it back.
188 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
189 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
190 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
193 struct iwl_rx_handlers {
196 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
197 struct iwl_device_cmd *cmd);
200 #define RX_HANDLER(_cmd_id, _fn, _async) \
201 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
204 * Handlers for fw notifications
205 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
206 * This list should be in order of frequency for performance purposes.
208 * The handler can be SYNC - this means that it will be called in the Rx path
209 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
210 * only in this case!), it should be set as ASYNC. In that case, it will be
211 * called from a worker with mvm->mutex held.
213 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
214 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false),
215 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false),
216 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
217 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
219 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
220 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false),
221 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
223 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
225 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
226 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false),
227 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
228 iwl_mvm_rx_scan_offload_complete_notif, false),
229 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_sched_scan_results,
232 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
233 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
235 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
238 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
241 #define CMD(x) [x] = #x
243 static const char *iwl_mvm_cmd_strings[REPLY_MAX] = {
246 CMD(INIT_COMPLETE_NOTIF),
247 CMD(PHY_CONTEXT_CMD),
251 CMD(MAC_CONTEXT_CMD),
253 CMD(TIME_EVENT_NOTIFICATION),
254 CMD(BINDING_CONTEXT_CMD),
256 CMD(NON_QOS_TX_COUNTER_CMD),
257 CMD(RADIO_VERSION_NOTIFICATION),
258 CMD(SCAN_REQUEST_CMD),
260 CMD(SCAN_START_NOTIFICATION),
261 CMD(SCAN_RESULTS_NOTIFICATION),
262 CMD(SCAN_COMPLETE_NOTIFICATION),
264 CMD(PHY_CONFIGURATION_CMD),
265 CMD(CALIB_RES_NOTIF_PHY_DB),
266 CMD(SET_CALIB_DEFAULT_CMD),
267 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
272 CMD(SCAN_OFFLOAD_CONFIG_CMD),
273 CMD(MATCH_FOUND_NOTIFICATION),
274 CMD(SCAN_OFFLOAD_REQUEST_CMD),
275 CMD(SCAN_OFFLOAD_ABORT_CMD),
276 CMD(SCAN_OFFLOAD_COMPLETE),
277 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
278 CMD(POWER_TABLE_CMD),
280 CMD(REPLY_RX_PHY_CMD),
281 CMD(REPLY_RX_MPDU_CMD),
282 CMD(BEACON_NOTIFICATION),
283 CMD(BEACON_TEMPLATE_CMD),
284 CMD(STATISTICS_NOTIFICATION),
285 CMD(REDUCE_TX_POWER_CMD),
286 CMD(TX_ANT_CONFIGURATION_CMD),
288 CMD(PROT_OFFLOAD_CONFIG_CMD),
289 CMD(OFFLOADS_QUERY_CMD),
290 CMD(REMOTE_WAKE_CONFIG_CMD),
291 CMD(WOWLAN_PATTERNS),
292 CMD(WOWLAN_CONFIGURATION),
293 CMD(WOWLAN_TSC_RSC_PARAM),
294 CMD(WOWLAN_TKIP_PARAM),
295 CMD(WOWLAN_KEK_KCK_MATERIAL),
296 CMD(WOWLAN_GET_STATUSES),
297 CMD(WOWLAN_TX_POWER_PER_DB),
298 CMD(NET_DETECT_CONFIG_CMD),
299 CMD(NET_DETECT_PROFILES_QUERY_CMD),
300 CMD(NET_DETECT_PROFILES_CMD),
301 CMD(NET_DETECT_HOTSPOTS_CMD),
302 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
303 CMD(CARD_STATE_NOTIFICATION),
304 CMD(MISSED_BEACONS_NOTIFICATION),
305 CMD(BT_COEX_PRIO_TABLE),
306 CMD(BT_COEX_PROT_ENV),
307 CMD(BT_PROFILE_NOTIFICATION),
309 CMD(MCAST_FILTER_CMD),
310 CMD(REPLY_BEACON_FILTERING_CMD),
311 CMD(REPLY_THERMAL_MNG_BACKOFF),
312 CMD(MAC_PM_POWER_TABLE),
317 /* this forward declaration can avoid to export the function */
318 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
320 static struct iwl_op_mode *
321 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
322 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
324 struct ieee80211_hw *hw;
325 struct iwl_op_mode *op_mode;
327 struct iwl_trans_config trans_cfg = {};
328 static const u8 no_reclaim_cmds[] = {
333 /********************************
334 * 1. Allocating and configuring HW data
335 ********************************/
336 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
337 sizeof(struct iwl_mvm),
343 op_mode->ops = &iwl_mvm_ops;
344 op_mode->trans = trans;
346 mvm = IWL_OP_MODE_GET_MVM(op_mode);
347 mvm->dev = trans->dev;
353 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
355 mutex_init(&mvm->mutex);
356 spin_lock_init(&mvm->async_handlers_lock);
357 INIT_LIST_HEAD(&mvm->time_event_list);
358 INIT_LIST_HEAD(&mvm->async_handlers_list);
359 spin_lock_init(&mvm->time_event_lock);
361 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
362 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
363 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
365 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
368 * Populate the state variables that the transport layer needs
371 trans_cfg.op_mode = op_mode;
372 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
373 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
374 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
376 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
377 trans_cfg.bc_table_dword = true;
379 if (!iwlwifi_mod_params.wd_disable)
380 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
382 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
384 trans_cfg.command_names = iwl_mvm_cmd_strings;
386 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
387 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
389 snprintf(mvm->hw->wiphy->fw_version,
390 sizeof(mvm->hw->wiphy->fw_version),
391 "%s", fw->fw_version);
393 /* Configure transport layer */
394 iwl_trans_configure(mvm->trans, &trans_cfg);
396 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
397 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
399 /* set up notification wait support */
400 iwl_notification_wait_init(&mvm->notif_wait);
403 mvm->phy_db = iwl_phy_db_init(trans);
405 IWL_ERR(mvm, "Cannot init phy_db\n");
409 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
410 mvm->cfg->name, mvm->trans->hw_rev);
412 iwl_mvm_tt_initialize(mvm);
415 * If the NVM exists in an external file,
416 * there is no need to unnecessarily power up the NIC at driver load
418 if (iwlwifi_mod_params.nvm_file) {
421 err = iwl_trans_start_hw(mvm->trans);
425 mutex_lock(&mvm->mutex);
426 err = iwl_run_init_mvm_ucode(mvm, true);
427 mutex_unlock(&mvm->mutex);
428 /* returns 0 if successful, 1 if success but in rfkill */
429 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
430 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
434 /* Stop the hw after the ALIVE and NVM has been read */
435 if (!iwlmvm_mod_params.init_dbg)
436 iwl_trans_stop_hw(mvm->trans, false);
439 scan_size = sizeof(struct iwl_scan_cmd) +
440 mvm->fw->ucode_capa.max_probe_length +
441 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
442 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
446 err = iwl_mvm_mac_setup_register(mvm);
450 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
454 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD)
455 mvm->pm_ops = &pm_mac_ops;
457 mvm->pm_ops = &pm_legacy_ops;
459 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
464 ieee80211_unregister_hw(mvm->hw);
466 iwl_phy_db_free(mvm->phy_db);
467 kfree(mvm->scan_cmd);
468 if (!iwlwifi_mod_params.nvm_file)
469 iwl_trans_stop_hw(trans, true);
470 ieee80211_free_hw(mvm->hw);
474 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
476 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
479 iwl_mvm_leds_exit(mvm);
481 iwl_mvm_tt_exit(mvm);
483 ieee80211_unregister_hw(mvm->hw);
485 kfree(mvm->scan_cmd);
487 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
488 kfree(mvm->d3_resume_sram);
491 iwl_trans_stop_hw(mvm->trans, true);
493 iwl_phy_db_free(mvm->phy_db);
496 iwl_free_nvm_data(mvm->nvm_data);
497 for (i = 0; i < NVM_NUM_OF_SECTIONS; i++)
498 kfree(mvm->nvm_sections[i].data);
500 ieee80211_free_hw(mvm->hw);
503 struct iwl_async_handler_entry {
504 struct list_head list;
505 struct iwl_rx_cmd_buffer rxb;
506 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
507 struct iwl_device_cmd *cmd);
510 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
512 struct iwl_async_handler_entry *entry, *tmp;
514 spin_lock_bh(&mvm->async_handlers_lock);
515 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
516 iwl_free_rxb(&entry->rxb);
517 list_del(&entry->list);
520 spin_unlock_bh(&mvm->async_handlers_lock);
523 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
525 struct iwl_mvm *mvm =
526 container_of(wk, struct iwl_mvm, async_handlers_wk);
527 struct iwl_async_handler_entry *entry, *tmp;
528 struct list_head local_list;
530 INIT_LIST_HEAD(&local_list);
532 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
533 mutex_lock(&mvm->mutex);
536 * Sync with Rx path with a lock. Remove all the entries from this list,
537 * add them to a local one (lock free), and then handle them.
539 spin_lock_bh(&mvm->async_handlers_lock);
540 list_splice_init(&mvm->async_handlers_list, &local_list);
541 spin_unlock_bh(&mvm->async_handlers_lock);
543 list_for_each_entry_safe(entry, tmp, &local_list, list) {
544 if (entry->fn(mvm, &entry->rxb, NULL))
546 "returned value from ASYNC handlers are ignored\n");
547 iwl_free_rxb(&entry->rxb);
548 list_del(&entry->list);
551 mutex_unlock(&mvm->mutex);
554 static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
555 struct iwl_rx_cmd_buffer *rxb,
556 struct iwl_device_cmd *cmd)
558 struct iwl_rx_packet *pkt = rxb_addr(rxb);
559 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
563 * Do the notification wait before RX handlers so
564 * even if the RX handler consumes the RXB we have
565 * access to it in the notification wait entry.
567 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
569 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
570 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
571 struct iwl_async_handler_entry *entry;
573 if (rx_h->cmd_id != pkt->hdr.cmd)
577 return rx_h->fn(mvm, rxb, cmd);
579 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
580 /* we can't do much... */
584 entry->rxb._page = rxb_steal_page(rxb);
585 entry->rxb._offset = rxb->_offset;
586 entry->rxb._rx_page_order = rxb->_rx_page_order;
587 entry->fn = rx_h->fn;
588 spin_lock(&mvm->async_handlers_lock);
589 list_add_tail(&entry->list, &mvm->async_handlers_list);
590 spin_unlock(&mvm->async_handlers_lock);
591 schedule_work(&mvm->async_handlers_wk);
598 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
600 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
601 int mq = mvm->queue_to_mac80211[queue];
603 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
606 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
607 IWL_DEBUG_TX_QUEUES(mvm,
608 "queue %d (mac80211 %d) already stopped\n",
613 set_bit(mq, &mvm->transport_queue_stop);
614 ieee80211_stop_queue(mvm->hw, mq);
617 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
619 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
620 int mq = mvm->queue_to_mac80211[queue];
622 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
625 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
626 IWL_DEBUG_TX_QUEUES(mvm,
627 "queue %d (mac80211 %d) already awake\n",
632 clear_bit(mq, &mvm->transport_queue_stop);
634 ieee80211_wake_queue(mvm->hw, mq);
637 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
640 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
642 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
644 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
647 static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
649 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
652 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
654 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
656 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
659 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
661 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
662 struct ieee80211_tx_info *info;
664 info = IEEE80211_SKB_CB(skb);
665 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
666 ieee80211_free_txskb(mvm->hw, skb);
669 struct iwl_mvm_reprobe {
671 struct work_struct work;
674 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
676 struct iwl_mvm_reprobe *reprobe;
678 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
679 if (device_reprobe(reprobe->dev))
680 dev_err(reprobe->dev, "reprobe failed!\n");
682 module_put(THIS_MODULE);
685 static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
687 iwl_abort_notification_waits(&mvm->notif_wait);
690 * If we're restarting already, don't cycle restarts.
691 * If INIT fw asserted, it will likely fail again.
692 * If WoWLAN fw asserted, don't restart either, mac80211
693 * can't recover this since we're already half suspended.
695 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
696 struct iwl_mvm_reprobe *reprobe;
699 "Firmware error during reconfiguration - reprobe!\n");
702 * get a module reference to avoid doing this while unloading
703 * anyway and to avoid scheduling a work with code that's
706 if (!try_module_get(THIS_MODULE)) {
707 IWL_ERR(mvm, "Module is being unloaded - abort\n");
711 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
713 module_put(THIS_MODULE);
716 reprobe->dev = mvm->trans->dev;
717 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
718 schedule_work(&reprobe->work);
719 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) {
721 * This is a bit racy, but worst case we tell mac80211 about
722 * a stopped/aborted (sched) scan when that was already done
723 * which is not a problem. It is necessary to abort any scan
724 * here because mac80211 requires having the scan cleared
726 * We'll reset the scan_status to NONE in restart cleanup in
727 * the next start() call from mac80211.
729 switch (mvm->scan_status) {
730 case IWL_MVM_SCAN_NONE:
732 case IWL_MVM_SCAN_OS:
733 ieee80211_scan_completed(mvm->hw, true);
735 case IWL_MVM_SCAN_SCHED:
736 ieee80211_sched_scan_stopped(mvm->hw);
740 if (mvm->restart_fw > 0)
742 ieee80211_restart_hw(mvm->hw);
746 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
748 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
750 iwl_mvm_dump_nic_error_log(mvm);
751 if (!mvm->restart_fw)
752 iwl_mvm_dump_sram(mvm);
754 iwl_mvm_nic_restart(mvm);
757 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
759 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
762 iwl_mvm_nic_restart(mvm);
765 static const struct iwl_op_mode_ops iwl_mvm_ops = {
766 .start = iwl_op_mode_mvm_start,
767 .stop = iwl_op_mode_mvm_stop,
768 .rx = iwl_mvm_rx_dispatch,
769 .queue_full = iwl_mvm_stop_sw_queue,
770 .queue_not_full = iwl_mvm_wake_sw_queue,
771 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
772 .free_skb = iwl_mvm_free_skb,
773 .nic_error = iwl_mvm_nic_error,
774 .cmd_queue_full = iwl_mvm_cmd_queue_full,
775 .nic_config = iwl_mvm_nic_config,