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.
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 - 2014 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 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
189 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
190 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
191 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
194 struct iwl_rx_handlers {
197 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
198 struct iwl_device_cmd *cmd);
201 #define RX_HANDLER(_cmd_id, _fn, _async) \
202 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
205 * Handlers for fw notifications
206 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
207 * This list should be in order of frequency for performance purposes.
209 * The handler can be SYNC - this means that it will be called in the Rx path
210 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
211 * only in this case!), it should be set as ASYNC. In that case, it will be
212 * called from a worker with mvm->mutex held.
214 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
215 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false),
216 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false),
217 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
218 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
220 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
221 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false),
222 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
224 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
226 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
228 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
229 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false),
230 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
231 iwl_mvm_rx_scan_offload_complete_notif, true),
232 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_sched_scan_results,
235 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
236 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
238 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
241 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
242 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
243 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
246 #define CMD(x) [x] = #x
248 static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
251 CMD(INIT_COMPLETE_NOTIF),
252 CMD(PHY_CONTEXT_CMD),
256 CMD(MAC_CONTEXT_CMD),
258 CMD(TIME_EVENT_NOTIFICATION),
259 CMD(BINDING_CONTEXT_CMD),
261 CMD(NON_QOS_TX_COUNTER_CMD),
262 CMD(RADIO_VERSION_NOTIFICATION),
263 CMD(SCAN_REQUEST_CMD),
265 CMD(SCAN_START_NOTIFICATION),
266 CMD(SCAN_RESULTS_NOTIFICATION),
267 CMD(SCAN_COMPLETE_NOTIFICATION),
269 CMD(PHY_CONFIGURATION_CMD),
270 CMD(CALIB_RES_NOTIF_PHY_DB),
271 CMD(SET_CALIB_DEFAULT_CMD),
272 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
277 CMD(SCAN_OFFLOAD_CONFIG_CMD),
278 CMD(MATCH_FOUND_NOTIFICATION),
279 CMD(SCAN_OFFLOAD_REQUEST_CMD),
280 CMD(SCAN_OFFLOAD_ABORT_CMD),
281 CMD(SCAN_OFFLOAD_COMPLETE),
282 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
283 CMD(POWER_TABLE_CMD),
285 CMD(REPLY_RX_PHY_CMD),
286 CMD(REPLY_RX_MPDU_CMD),
287 CMD(BEACON_NOTIFICATION),
288 CMD(BEACON_TEMPLATE_CMD),
289 CMD(STATISTICS_NOTIFICATION),
290 CMD(EOSP_NOTIFICATION),
291 CMD(REDUCE_TX_POWER_CMD),
292 CMD(TX_ANT_CONFIGURATION_CMD),
295 CMD(PROT_OFFLOAD_CONFIG_CMD),
296 CMD(OFFLOADS_QUERY_CMD),
297 CMD(REMOTE_WAKE_CONFIG_CMD),
298 CMD(WOWLAN_PATTERNS),
299 CMD(WOWLAN_CONFIGURATION),
300 CMD(WOWLAN_TSC_RSC_PARAM),
301 CMD(WOWLAN_TKIP_PARAM),
302 CMD(WOWLAN_KEK_KCK_MATERIAL),
303 CMD(WOWLAN_GET_STATUSES),
304 CMD(WOWLAN_TX_POWER_PER_DB),
305 CMD(NET_DETECT_CONFIG_CMD),
306 CMD(NET_DETECT_PROFILES_QUERY_CMD),
307 CMD(NET_DETECT_PROFILES_CMD),
308 CMD(NET_DETECT_HOTSPOTS_CMD),
309 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
310 CMD(CARD_STATE_NOTIFICATION),
311 CMD(MISSED_BEACONS_NOTIFICATION),
312 CMD(BT_COEX_PRIO_TABLE),
313 CMD(BT_COEX_PROT_ENV),
314 CMD(BT_PROFILE_NOTIFICATION),
316 CMD(MCAST_FILTER_CMD),
317 CMD(BCAST_FILTER_CMD),
318 CMD(REPLY_SF_CFG_CMD),
319 CMD(REPLY_BEACON_FILTERING_CMD),
320 CMD(REPLY_THERMAL_MNG_BACKOFF),
321 CMD(MAC_PM_POWER_TABLE),
323 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
327 /* this forward declaration can avoid to export the function */
328 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
329 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
331 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
333 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
338 while (pwr_tx_backoff->pwr) {
339 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
340 return pwr_tx_backoff->backoff;
348 static struct iwl_op_mode *
349 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
350 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
352 struct ieee80211_hw *hw;
353 struct iwl_op_mode *op_mode;
355 struct iwl_trans_config trans_cfg = {};
356 static const u8 no_reclaim_cmds[] = {
363 * We use IWL_MVM_STATION_COUNT to check the validity of the station
364 * index all over the driver - check that its value corresponds to the
367 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
369 /********************************
370 * 1. Allocating and configuring HW data
371 ********************************/
372 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
373 sizeof(struct iwl_mvm),
379 op_mode->ops = &iwl_mvm_ops;
381 mvm = IWL_OP_MODE_GET_MVM(op_mode);
382 mvm->dev = trans->dev;
388 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
391 mvm->first_agg_queue = 16;
392 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
393 if (mvm->cfg->base_params->num_of_queues == 16) {
395 mvm->first_agg_queue = 12;
397 mvm->sf_state = SF_UNINIT;
399 mutex_init(&mvm->mutex);
400 spin_lock_init(&mvm->async_handlers_lock);
401 INIT_LIST_HEAD(&mvm->time_event_list);
402 INIT_LIST_HEAD(&mvm->async_handlers_list);
403 spin_lock_init(&mvm->time_event_lock);
405 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
406 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
407 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
408 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
410 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
413 * Populate the state variables that the transport layer needs
416 trans_cfg.op_mode = op_mode;
417 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
418 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
419 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
421 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
422 trans_cfg.bc_table_dword = true;
424 if (!iwlwifi_mod_params.wd_disable)
425 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
427 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
429 trans_cfg.command_names = iwl_mvm_cmd_strings;
431 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
432 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
434 snprintf(mvm->hw->wiphy->fw_version,
435 sizeof(mvm->hw->wiphy->fw_version),
436 "%s", fw->fw_version);
438 /* Configure transport layer */
439 iwl_trans_configure(mvm->trans, &trans_cfg);
441 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
442 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
444 /* set up notification wait support */
445 iwl_notification_wait_init(&mvm->notif_wait);
448 mvm->phy_db = iwl_phy_db_init(trans);
450 IWL_ERR(mvm, "Cannot init phy_db\n");
454 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
455 mvm->cfg->name, mvm->trans->hw_rev);
457 min_backoff = calc_min_backoff(trans, cfg);
458 iwl_mvm_tt_initialize(mvm, min_backoff);
461 * If the NVM exists in an external file,
462 * there is no need to unnecessarily power up the NIC at driver load
464 if (iwlwifi_mod_params.nvm_file) {
465 err = iwl_nvm_init(mvm);
469 err = iwl_trans_start_hw(mvm->trans);
473 mutex_lock(&mvm->mutex);
474 err = iwl_run_init_mvm_ucode(mvm, true);
475 iwl_trans_stop_device(trans);
476 mutex_unlock(&mvm->mutex);
477 /* returns 0 if successful, 1 if success but in rfkill */
478 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
479 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
484 scan_size = sizeof(struct iwl_scan_cmd) +
485 mvm->fw->ucode_capa.max_probe_length +
486 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
487 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
491 err = iwl_mvm_mac_setup_register(mvm);
495 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
499 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
501 /* rpm starts with a taken ref. only set the appropriate bit here. */
502 set_bit(IWL_MVM_REF_UCODE_DOWN, mvm->ref_bitmap);
507 ieee80211_unregister_hw(mvm->hw);
508 iwl_mvm_leds_exit(mvm);
510 iwl_phy_db_free(mvm->phy_db);
511 kfree(mvm->scan_cmd);
512 if (!iwlwifi_mod_params.nvm_file)
513 iwl_trans_op_mode_leave(trans);
514 ieee80211_free_hw(mvm->hw);
518 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
520 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
523 iwl_mvm_leds_exit(mvm);
525 iwl_mvm_tt_exit(mvm);
527 ieee80211_unregister_hw(mvm->hw);
529 kfree(mvm->scan_cmd);
530 kfree(mvm->mcast_filter_cmd);
531 mvm->mcast_filter_cmd = NULL;
533 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
534 kfree(mvm->d3_resume_sram);
537 iwl_trans_op_mode_leave(mvm->trans);
539 iwl_phy_db_free(mvm->phy_db);
542 iwl_free_nvm_data(mvm->nvm_data);
543 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
544 kfree(mvm->nvm_sections[i].data);
546 ieee80211_free_hw(mvm->hw);
549 struct iwl_async_handler_entry {
550 struct list_head list;
551 struct iwl_rx_cmd_buffer rxb;
552 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
553 struct iwl_device_cmd *cmd);
556 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
558 struct iwl_async_handler_entry *entry, *tmp;
560 spin_lock_bh(&mvm->async_handlers_lock);
561 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
562 iwl_free_rxb(&entry->rxb);
563 list_del(&entry->list);
566 spin_unlock_bh(&mvm->async_handlers_lock);
569 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
571 struct iwl_mvm *mvm =
572 container_of(wk, struct iwl_mvm, async_handlers_wk);
573 struct iwl_async_handler_entry *entry, *tmp;
574 struct list_head local_list;
576 INIT_LIST_HEAD(&local_list);
578 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
579 mutex_lock(&mvm->mutex);
582 * Sync with Rx path with a lock. Remove all the entries from this list,
583 * add them to a local one (lock free), and then handle them.
585 spin_lock_bh(&mvm->async_handlers_lock);
586 list_splice_init(&mvm->async_handlers_list, &local_list);
587 spin_unlock_bh(&mvm->async_handlers_lock);
589 list_for_each_entry_safe(entry, tmp, &local_list, list) {
590 if (entry->fn(mvm, &entry->rxb, NULL))
592 "returned value from ASYNC handlers are ignored\n");
593 iwl_free_rxb(&entry->rxb);
594 list_del(&entry->list);
597 mutex_unlock(&mvm->mutex);
600 static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
601 struct iwl_rx_cmd_buffer *rxb,
602 struct iwl_device_cmd *cmd)
604 struct iwl_rx_packet *pkt = rxb_addr(rxb);
605 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
609 * Do the notification wait before RX handlers so
610 * even if the RX handler consumes the RXB we have
611 * access to it in the notification wait entry.
613 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
615 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
616 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
617 struct iwl_async_handler_entry *entry;
619 if (rx_h->cmd_id != pkt->hdr.cmd)
623 return rx_h->fn(mvm, rxb, cmd);
625 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
626 /* we can't do much... */
630 entry->rxb._page = rxb_steal_page(rxb);
631 entry->rxb._offset = rxb->_offset;
632 entry->rxb._rx_page_order = rxb->_rx_page_order;
633 entry->fn = rx_h->fn;
634 spin_lock(&mvm->async_handlers_lock);
635 list_add_tail(&entry->list, &mvm->async_handlers_list);
636 spin_unlock(&mvm->async_handlers_lock);
637 schedule_work(&mvm->async_handlers_wk);
644 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
646 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
647 int mq = mvm->queue_to_mac80211[queue];
649 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
652 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
653 IWL_DEBUG_TX_QUEUES(mvm,
654 "queue %d (mac80211 %d) already stopped\n",
659 set_bit(mq, &mvm->transport_queue_stop);
660 ieee80211_stop_queue(mvm->hw, mq);
663 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
665 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
666 int mq = mvm->queue_to_mac80211[queue];
668 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
671 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
672 IWL_DEBUG_TX_QUEUES(mvm,
673 "queue %d (mac80211 %d) already awake\n",
678 clear_bit(mq, &mvm->transport_queue_stop);
680 ieee80211_wake_queue(mvm->hw, mq);
683 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
686 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
688 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
690 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
693 static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
695 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
698 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
700 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
702 if (state && mvm->cur_ucode != IWL_UCODE_INIT)
703 iwl_trans_stop_device(mvm->trans);
704 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
707 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
709 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
710 struct ieee80211_tx_info *info;
712 info = IEEE80211_SKB_CB(skb);
713 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
714 ieee80211_free_txskb(mvm->hw, skb);
717 struct iwl_mvm_reprobe {
719 struct work_struct work;
722 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
724 struct iwl_mvm_reprobe *reprobe;
726 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
727 if (device_reprobe(reprobe->dev))
728 dev_err(reprobe->dev, "reprobe failed!\n");
730 module_put(THIS_MODULE);
733 static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
735 iwl_abort_notification_waits(&mvm->notif_wait);
738 * This is a bit racy, but worst case we tell mac80211 about
739 * a stopped/aborted scan when that was already done which
740 * is not a problem. It is necessary to abort any os scan
741 * here because mac80211 requires having the scan cleared
743 * We'll reset the scan_status to NONE in restart cleanup in
744 * the next start() call from mac80211. If restart isn't called
745 * (no fw restart) scan status will stay busy.
747 switch (mvm->scan_status) {
748 case IWL_MVM_SCAN_NONE:
750 case IWL_MVM_SCAN_OS:
751 ieee80211_scan_completed(mvm->hw, true);
753 case IWL_MVM_SCAN_SCHED:
754 /* Sched scan will be restarted by mac80211 in restart_hw. */
755 if (!mvm->restart_fw)
756 ieee80211_sched_scan_stopped(mvm->hw);
761 * If we're restarting already, don't cycle restarts.
762 * If INIT fw asserted, it will likely fail again.
763 * If WoWLAN fw asserted, don't restart either, mac80211
764 * can't recover this since we're already half suspended.
766 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
767 struct iwl_mvm_reprobe *reprobe;
770 "Firmware error during reconfiguration - reprobe!\n");
773 * get a module reference to avoid doing this while unloading
774 * anyway and to avoid scheduling a work with code that's
777 if (!try_module_get(THIS_MODULE)) {
778 IWL_ERR(mvm, "Module is being unloaded - abort\n");
782 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
784 module_put(THIS_MODULE);
787 reprobe->dev = mvm->trans->dev;
788 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
789 schedule_work(&reprobe->work);
790 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) {
791 /* don't let the transport/FW power down */
792 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
794 if (mvm->restart_fw > 0)
796 ieee80211_restart_hw(mvm->hw);
800 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
802 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
804 iwl_mvm_dump_nic_error_log(mvm);
805 if (!mvm->restart_fw)
806 iwl_mvm_dump_sram(mvm);
808 iwl_mvm_nic_restart(mvm);
811 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
813 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
816 iwl_mvm_nic_restart(mvm);
819 struct iwl_d0i3_iter_data {
825 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
826 struct ieee80211_vif *vif)
828 struct iwl_d0i3_iter_data *data = _data;
829 struct iwl_mvm *mvm = data->mvm;
830 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
831 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
833 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
834 if (vif->type != NL80211_IFTYPE_STATION ||
835 !vif->bss_conf.assoc)
838 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
841 * on init/association, mvm already configures POWER_TABLE_CMD
842 * and REPLY_MCAST_FILTER_CMD, so currently don't
843 * reconfigure them (we might want to use different
844 * params later on, though).
846 data->ap_sta_id = mvmvif->ap_sta_id;
850 static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
852 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
853 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
855 struct iwl_d0i3_iter_data d0i3_iter_data = {
858 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
859 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
860 IWL_WOWLAN_WAKEUP_BEACON_MISS |
861 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
862 IWL_WOWLAN_WAKEUP_BCN_FILTERING),
864 struct iwl_d3_manager_config d3_cfg_cmd = {
865 .min_sleep_time = cpu_to_le32(1000),
868 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
870 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
871 IEEE80211_IFACE_ITER_NORMAL,
872 iwl_mvm_enter_d0i3_iterator,
874 if (d0i3_iter_data.vif_count == 1) {
875 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
877 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
878 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
881 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
882 sizeof(wowlan_config_cmd),
887 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
888 flags | CMD_MAKE_TRANS_IDLE,
889 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
892 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
893 struct ieee80211_vif *vif)
895 struct iwl_mvm *mvm = _data;
896 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
898 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
899 if (vif->type != NL80211_IFTYPE_STATION ||
900 !vif->bss_conf.assoc)
903 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
906 static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac,
907 struct ieee80211_vif *vif)
909 struct iwl_mvm *mvm = data;
910 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
912 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc &&
913 mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
914 ieee80211_connection_loss(vif);
917 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
919 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
920 struct iwl_host_cmd get_status_cmd = {
921 .id = WOWLAN_GET_STATUSES,
922 .flags = CMD_SYNC | CMD_HIGH_PRIO | CMD_WANT_SKB,
924 struct iwl_wowlan_status_v6 *status;
926 u32 disconnection_reasons, wakeup_reasons;
928 mutex_lock(&mvm->mutex);
929 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
933 if (!get_status_cmd.resp_pkt)
936 status = (void *)get_status_cmd.resp_pkt->data;
937 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
939 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
941 disconnection_reasons =
942 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
943 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
944 if (wakeup_reasons & disconnection_reasons)
945 ieee80211_iterate_active_interfaces(
946 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
947 iwl_mvm_d0i3_disconnect_iter, mvm);
949 iwl_free_resp(&get_status_cmd);
951 mutex_unlock(&mvm->mutex);
954 static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
956 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
957 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
961 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
963 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
967 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
968 IEEE80211_IFACE_ITER_NORMAL,
969 iwl_mvm_exit_d0i3_iterator,
972 schedule_work(&mvm->d0i3_exit_work);
976 static const struct iwl_op_mode_ops iwl_mvm_ops = {
977 .start = iwl_op_mode_mvm_start,
978 .stop = iwl_op_mode_mvm_stop,
979 .rx = iwl_mvm_rx_dispatch,
980 .queue_full = iwl_mvm_stop_sw_queue,
981 .queue_not_full = iwl_mvm_wake_sw_queue,
982 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
983 .free_skb = iwl_mvm_free_skb,
984 .nic_error = iwl_mvm_nic_error,
985 .cmd_queue_full = iwl_mvm_cmd_queue_full,
986 .nic_config = iwl_mvm_nic_config,
987 .enter_d0i3 = iwl_mvm_enter_d0i3,
988 .exit_d0i3 = iwl_mvm_exit_d0i3,