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),
228 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
229 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
231 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
234 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
237 #define CMD(x) [x] = #x
239 static const char *iwl_mvm_cmd_strings[REPLY_MAX] = {
242 CMD(INIT_COMPLETE_NOTIF),
243 CMD(PHY_CONTEXT_CMD),
247 CMD(MAC_CONTEXT_CMD),
249 CMD(TIME_EVENT_NOTIFICATION),
250 CMD(BINDING_CONTEXT_CMD),
252 CMD(NON_QOS_TX_COUNTER_CMD),
253 CMD(RADIO_VERSION_NOTIFICATION),
254 CMD(SCAN_REQUEST_CMD),
256 CMD(SCAN_START_NOTIFICATION),
257 CMD(SCAN_RESULTS_NOTIFICATION),
258 CMD(SCAN_COMPLETE_NOTIFICATION),
260 CMD(PHY_CONFIGURATION_CMD),
261 CMD(CALIB_RES_NOTIF_PHY_DB),
262 CMD(SET_CALIB_DEFAULT_CMD),
263 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
267 CMD(SCAN_OFFLOAD_CONFIG_CMD),
268 CMD(SCAN_OFFLOAD_REQUEST_CMD),
269 CMD(SCAN_OFFLOAD_ABORT_CMD),
270 CMD(SCAN_OFFLOAD_COMPLETE),
271 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
272 CMD(POWER_TABLE_CMD),
274 CMD(REPLY_RX_PHY_CMD),
275 CMD(REPLY_RX_MPDU_CMD),
276 CMD(BEACON_NOTIFICATION),
277 CMD(BEACON_TEMPLATE_CMD),
278 CMD(STATISTICS_NOTIFICATION),
279 CMD(REDUCE_TX_POWER_CMD),
280 CMD(TX_ANT_CONFIGURATION_CMD),
282 CMD(PROT_OFFLOAD_CONFIG_CMD),
283 CMD(OFFLOADS_QUERY_CMD),
284 CMD(REMOTE_WAKE_CONFIG_CMD),
285 CMD(WOWLAN_PATTERNS),
286 CMD(WOWLAN_CONFIGURATION),
287 CMD(WOWLAN_TSC_RSC_PARAM),
288 CMD(WOWLAN_TKIP_PARAM),
289 CMD(WOWLAN_KEK_KCK_MATERIAL),
290 CMD(WOWLAN_GET_STATUSES),
291 CMD(WOWLAN_TX_POWER_PER_DB),
292 CMD(NET_DETECT_CONFIG_CMD),
293 CMD(NET_DETECT_PROFILES_QUERY_CMD),
294 CMD(NET_DETECT_PROFILES_CMD),
295 CMD(NET_DETECT_HOTSPOTS_CMD),
296 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
297 CMD(CARD_STATE_NOTIFICATION),
298 CMD(MISSED_BEACONS_NOTIFICATION),
299 CMD(BT_COEX_PRIO_TABLE),
300 CMD(BT_COEX_PROT_ENV),
301 CMD(BT_PROFILE_NOTIFICATION),
303 CMD(MCAST_FILTER_CMD),
304 CMD(REPLY_BEACON_FILTERING_CMD),
305 CMD(REPLY_THERMAL_MNG_BACKOFF),
306 CMD(MAC_PM_POWER_TABLE),
310 /* this forward declaration can avoid to export the function */
311 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
313 static struct iwl_op_mode *
314 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
315 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
317 struct ieee80211_hw *hw;
318 struct iwl_op_mode *op_mode;
320 struct iwl_trans_config trans_cfg = {};
321 static const u8 no_reclaim_cmds[] = {
326 /********************************
327 * 1. Allocating and configuring HW data
328 ********************************/
329 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
330 sizeof(struct iwl_mvm),
336 op_mode->ops = &iwl_mvm_ops;
337 op_mode->trans = trans;
339 mvm = IWL_OP_MODE_GET_MVM(op_mode);
340 mvm->dev = trans->dev;
346 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
348 mutex_init(&mvm->mutex);
349 spin_lock_init(&mvm->async_handlers_lock);
350 INIT_LIST_HEAD(&mvm->time_event_list);
351 INIT_LIST_HEAD(&mvm->async_handlers_list);
352 spin_lock_init(&mvm->time_event_lock);
354 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
355 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
356 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
358 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
361 * Populate the state variables that the transport layer needs
364 trans_cfg.op_mode = op_mode;
365 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
366 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
367 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
369 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
370 trans_cfg.bc_table_dword = true;
372 if (!iwlwifi_mod_params.wd_disable)
373 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
375 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
377 trans_cfg.command_names = iwl_mvm_cmd_strings;
379 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
380 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
382 snprintf(mvm->hw->wiphy->fw_version,
383 sizeof(mvm->hw->wiphy->fw_version),
384 "%s", fw->fw_version);
386 /* Configure transport layer */
387 iwl_trans_configure(mvm->trans, &trans_cfg);
389 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
390 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
392 /* set up notification wait support */
393 iwl_notification_wait_init(&mvm->notif_wait);
396 mvm->phy_db = iwl_phy_db_init(trans);
398 IWL_ERR(mvm, "Cannot init phy_db\n");
402 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
403 mvm->cfg->name, mvm->trans->hw_rev);
405 err = iwl_trans_start_hw(mvm->trans);
409 iwl_mvm_tt_initialize(mvm);
411 mutex_lock(&mvm->mutex);
412 err = iwl_run_init_mvm_ucode(mvm, true);
413 mutex_unlock(&mvm->mutex);
414 /* returns 0 if successful, 1 if success but in rfkill */
415 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
416 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
420 /* Stop the hw after the ALIVE and NVM has been read */
421 if (!iwlmvm_mod_params.init_dbg)
422 iwl_trans_stop_hw(mvm->trans, false);
424 scan_size = sizeof(struct iwl_scan_cmd) +
425 mvm->fw->ucode_capa.max_probe_length +
426 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
427 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
431 err = iwl_mvm_mac_setup_register(mvm);
435 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
439 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD)
440 mvm->pm_ops = &pm_mac_ops;
442 mvm->pm_ops = &pm_legacy_ops;
444 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
449 ieee80211_unregister_hw(mvm->hw);
451 iwl_phy_db_free(mvm->phy_db);
452 kfree(mvm->scan_cmd);
453 iwl_trans_stop_hw(trans, true);
454 ieee80211_free_hw(mvm->hw);
458 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
460 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
463 iwl_mvm_leds_exit(mvm);
465 iwl_mvm_tt_exit(mvm);
467 ieee80211_unregister_hw(mvm->hw);
469 kfree(mvm->scan_cmd);
471 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
472 kfree(mvm->d3_resume_sram);
475 iwl_trans_stop_hw(mvm->trans, true);
477 iwl_phy_db_free(mvm->phy_db);
480 iwl_free_nvm_data(mvm->nvm_data);
481 for (i = 0; i < NVM_NUM_OF_SECTIONS; i++)
482 kfree(mvm->nvm_sections[i].data);
484 ieee80211_free_hw(mvm->hw);
487 struct iwl_async_handler_entry {
488 struct list_head list;
489 struct iwl_rx_cmd_buffer rxb;
490 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
491 struct iwl_device_cmd *cmd);
494 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
496 struct iwl_async_handler_entry *entry, *tmp;
498 spin_lock_bh(&mvm->async_handlers_lock);
499 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
500 iwl_free_rxb(&entry->rxb);
501 list_del(&entry->list);
504 spin_unlock_bh(&mvm->async_handlers_lock);
507 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
509 struct iwl_mvm *mvm =
510 container_of(wk, struct iwl_mvm, async_handlers_wk);
511 struct iwl_async_handler_entry *entry, *tmp;
512 struct list_head local_list;
514 INIT_LIST_HEAD(&local_list);
516 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
517 mutex_lock(&mvm->mutex);
520 * Sync with Rx path with a lock. Remove all the entries from this list,
521 * add them to a local one (lock free), and then handle them.
523 spin_lock_bh(&mvm->async_handlers_lock);
524 list_splice_init(&mvm->async_handlers_list, &local_list);
525 spin_unlock_bh(&mvm->async_handlers_lock);
527 list_for_each_entry_safe(entry, tmp, &local_list, list) {
528 if (entry->fn(mvm, &entry->rxb, NULL))
530 "returned value from ASYNC handlers are ignored\n");
531 iwl_free_rxb(&entry->rxb);
532 list_del(&entry->list);
535 mutex_unlock(&mvm->mutex);
538 static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
539 struct iwl_rx_cmd_buffer *rxb,
540 struct iwl_device_cmd *cmd)
542 struct iwl_rx_packet *pkt = rxb_addr(rxb);
543 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
547 * Do the notification wait before RX handlers so
548 * even if the RX handler consumes the RXB we have
549 * access to it in the notification wait entry.
551 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
553 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
554 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
555 struct iwl_async_handler_entry *entry;
557 if (rx_h->cmd_id != pkt->hdr.cmd)
561 return rx_h->fn(mvm, rxb, cmd);
563 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
564 /* we can't do much... */
568 entry->rxb._page = rxb_steal_page(rxb);
569 entry->rxb._offset = rxb->_offset;
570 entry->rxb._rx_page_order = rxb->_rx_page_order;
571 entry->fn = rx_h->fn;
572 spin_lock(&mvm->async_handlers_lock);
573 list_add_tail(&entry->list, &mvm->async_handlers_list);
574 spin_unlock(&mvm->async_handlers_lock);
575 schedule_work(&mvm->async_handlers_wk);
582 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
584 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
585 int mq = mvm->queue_to_mac80211[queue];
587 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
590 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
591 IWL_DEBUG_TX_QUEUES(mvm,
592 "queue %d (mac80211 %d) already stopped\n",
597 set_bit(mq, &mvm->transport_queue_stop);
598 ieee80211_stop_queue(mvm->hw, mq);
601 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
603 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
604 int mq = mvm->queue_to_mac80211[queue];
606 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
609 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
610 IWL_DEBUG_TX_QUEUES(mvm,
611 "queue %d (mac80211 %d) already awake\n",
616 clear_bit(mq, &mvm->transport_queue_stop);
618 ieee80211_wake_queue(mvm->hw, mq);
621 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
624 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
626 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
628 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
631 static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
633 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
636 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
638 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
640 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
643 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
645 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
646 struct ieee80211_tx_info *info;
648 info = IEEE80211_SKB_CB(skb);
649 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
650 ieee80211_free_txskb(mvm->hw, skb);
653 struct iwl_mvm_reprobe {
655 struct work_struct work;
658 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
660 struct iwl_mvm_reprobe *reprobe;
662 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
663 if (device_reprobe(reprobe->dev))
664 dev_err(reprobe->dev, "reprobe failed!\n");
666 module_put(THIS_MODULE);
669 static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
671 iwl_abort_notification_waits(&mvm->notif_wait);
674 * If we're restarting already, don't cycle restarts.
675 * If INIT fw asserted, it will likely fail again.
676 * If WoWLAN fw asserted, don't restart either, mac80211
677 * can't recover this since we're already half suspended.
679 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
680 struct iwl_mvm_reprobe *reprobe;
683 "Firmware error during reconfiguration - reprobe!\n");
686 * get a module reference to avoid doing this while unloading
687 * anyway and to avoid scheduling a work with code that's
690 if (!try_module_get(THIS_MODULE)) {
691 IWL_ERR(mvm, "Module is being unloaded - abort\n");
695 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
697 module_put(THIS_MODULE);
700 reprobe->dev = mvm->trans->dev;
701 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
702 schedule_work(&reprobe->work);
703 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) {
705 * This is a bit racy, but worst case we tell mac80211 about
706 * a stopped/aborted (sched) scan when that was already done
707 * which is not a problem. It is necessary to abort any scan
708 * here because mac80211 requires having the scan cleared
710 * We'll reset the scan_status to NONE in restart cleanup in
711 * the next start() call from mac80211.
713 switch (mvm->scan_status) {
714 case IWL_MVM_SCAN_NONE:
716 case IWL_MVM_SCAN_OS:
717 ieee80211_scan_completed(mvm->hw, true);
721 if (mvm->restart_fw > 0)
723 ieee80211_restart_hw(mvm->hw);
727 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
729 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
731 iwl_mvm_dump_nic_error_log(mvm);
732 if (!mvm->restart_fw)
733 iwl_mvm_dump_sram(mvm);
735 iwl_mvm_nic_restart(mvm);
738 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
740 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
743 iwl_mvm_nic_restart(mvm);
746 static const struct iwl_op_mode_ops iwl_mvm_ops = {
747 .start = iwl_op_mode_mvm_start,
748 .stop = iwl_op_mode_mvm_stop,
749 .rx = iwl_mvm_rx_dispatch,
750 .queue_full = iwl_mvm_stop_sw_queue,
751 .queue_not_full = iwl_mvm_wake_sw_queue,
752 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
753 .free_skb = iwl_mvm_free_skb,
754 .nic_error = iwl_mvm_nic_error,
755 .cmd_queue_full = iwl_mvm_cmd_queue_full,
756 .nic_config = iwl_mvm_nic_config,