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 <linux/vmalloc.h>
65 #include <net/mac80211.h>
67 #include "iwl-notif-wait.h"
68 #include "iwl-trans.h"
69 #include "iwl-op-mode.h"
71 #include "iwl-debug.h"
73 #include "iwl-modparams.h"
75 #include "iwl-phy-db.h"
76 #include "iwl-eeprom-parse.h"
81 #include "fw-api-scan.h"
82 #include "time-event.h"
83 #include "iwl-fw-error-dump.h"
86 * module name, copyright, version, etc.
88 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
90 #define DRV_VERSION IWLWIFI_VERSION
92 MODULE_DESCRIPTION(DRV_DESCRIPTION);
93 MODULE_VERSION(DRV_VERSION);
94 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
95 MODULE_LICENSE("GPL");
97 static const struct iwl_op_mode_ops iwl_mvm_ops;
99 struct iwl_mvm_mod_params iwlmvm_mod_params = {
100 .power_scheme = IWL_POWER_SCHEME_BPS,
101 /* rest of fields are 0 by default */
104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
105 MODULE_PARM_DESC(init_dbg,
106 "set to true to debug an ASSERT in INIT fw (default: false");
107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
108 MODULE_PARM_DESC(power_scheme,
109 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
112 * module init and exit functions
114 static int __init iwl_mvm_init(void)
118 ret = iwl_mvm_rate_control_register();
120 pr_err("Unable to register rate control algorithm: %d\n", ret);
124 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
127 pr_err("Unable to register MVM op_mode: %d\n", ret);
128 iwl_mvm_rate_control_unregister();
133 module_init(iwl_mvm_init);
135 static void __exit iwl_mvm_exit(void)
137 iwl_opmode_deregister("iwlmvm");
138 iwl_mvm_rate_control_unregister();
140 module_exit(iwl_mvm_exit);
142 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
144 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
145 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
148 radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >>
149 FW_PHY_CFG_RADIO_TYPE_POS;
150 radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >>
151 FW_PHY_CFG_RADIO_STEP_POS;
152 radio_cfg_dash = (mvm->fw->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->device_family != IWL_DEVICE_FAMILY_8000)
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),
237 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
239 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
240 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, true),
241 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
242 iwl_mvm_rx_scan_offload_complete_notif, true),
243 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_offload_results,
246 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
247 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
249 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
252 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
253 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
254 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
257 #define CMD(x) [x] = #x
259 static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
262 CMD(INIT_COMPLETE_NOTIF),
263 CMD(PHY_CONTEXT_CMD),
267 CMD(MAC_CONTEXT_CMD),
269 CMD(TIME_EVENT_NOTIFICATION),
270 CMD(BINDING_CONTEXT_CMD),
272 CMD(NON_QOS_TX_COUNTER_CMD),
273 CMD(RADIO_VERSION_NOTIFICATION),
274 CMD(SCAN_REQUEST_CMD),
276 CMD(SCAN_START_NOTIFICATION),
277 CMD(SCAN_RESULTS_NOTIFICATION),
278 CMD(SCAN_COMPLETE_NOTIFICATION),
280 CMD(PHY_CONFIGURATION_CMD),
281 CMD(CALIB_RES_NOTIF_PHY_DB),
282 CMD(SET_CALIB_DEFAULT_CMD),
283 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
288 CMD(SCAN_OFFLOAD_CONFIG_CMD),
289 CMD(MATCH_FOUND_NOTIFICATION),
290 CMD(SCAN_OFFLOAD_REQUEST_CMD),
291 CMD(SCAN_OFFLOAD_ABORT_CMD),
293 CMD(SCAN_OFFLOAD_COMPLETE),
294 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
295 CMD(SCAN_ITERATION_COMPLETE),
296 CMD(POWER_TABLE_CMD),
298 CMD(REPLY_RX_PHY_CMD),
299 CMD(REPLY_RX_MPDU_CMD),
300 CMD(BEACON_NOTIFICATION),
301 CMD(BEACON_TEMPLATE_CMD),
302 CMD(STATISTICS_NOTIFICATION),
303 CMD(EOSP_NOTIFICATION),
304 CMD(REDUCE_TX_POWER_CMD),
305 CMD(TX_ANT_CONFIGURATION_CMD),
308 CMD(PROT_OFFLOAD_CONFIG_CMD),
309 CMD(OFFLOADS_QUERY_CMD),
310 CMD(REMOTE_WAKE_CONFIG_CMD),
311 CMD(WOWLAN_PATTERNS),
312 CMD(WOWLAN_CONFIGURATION),
313 CMD(WOWLAN_TSC_RSC_PARAM),
314 CMD(WOWLAN_TKIP_PARAM),
315 CMD(WOWLAN_KEK_KCK_MATERIAL),
316 CMD(WOWLAN_GET_STATUSES),
317 CMD(WOWLAN_TX_POWER_PER_DB),
318 CMD(NET_DETECT_CONFIG_CMD),
319 CMD(NET_DETECT_PROFILES_QUERY_CMD),
320 CMD(NET_DETECT_PROFILES_CMD),
321 CMD(NET_DETECT_HOTSPOTS_CMD),
322 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
323 CMD(CARD_STATE_NOTIFICATION),
324 CMD(MISSED_BEACONS_NOTIFICATION),
325 CMD(BT_COEX_PRIO_TABLE),
326 CMD(BT_COEX_PROT_ENV),
327 CMD(BT_PROFILE_NOTIFICATION),
329 CMD(MCAST_FILTER_CMD),
330 CMD(BCAST_FILTER_CMD),
331 CMD(REPLY_SF_CFG_CMD),
332 CMD(REPLY_BEACON_FILTERING_CMD),
333 CMD(REPLY_THERMAL_MNG_BACKOFF),
334 CMD(MAC_PM_POWER_TABLE),
336 CMD(BT_COEX_UPDATE_SW_BOOST),
337 CMD(BT_COEX_UPDATE_CORUN_LUT),
338 CMD(BT_COEX_UPDATE_REDUCED_TXP),
339 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
340 CMD(ANTENNA_COUPLING_NOTIFICATION),
344 /* this forward declaration can avoid to export the function */
345 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
346 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
348 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
350 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
355 while (pwr_tx_backoff->pwr) {
356 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
357 return pwr_tx_backoff->backoff;
365 static struct iwl_op_mode *
366 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
367 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
369 struct ieee80211_hw *hw;
370 struct iwl_op_mode *op_mode;
372 struct iwl_trans_config trans_cfg = {};
373 static const u8 no_reclaim_cmds[] = {
380 * We use IWL_MVM_STATION_COUNT to check the validity of the station
381 * index all over the driver - check that its value corresponds to the
384 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
386 /********************************
387 * 1. Allocating and configuring HW data
388 ********************************/
389 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
390 sizeof(struct iwl_mvm),
395 if (cfg->max_rx_agg_size)
396 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
399 op_mode->ops = &iwl_mvm_ops;
401 mvm = IWL_OP_MODE_GET_MVM(op_mode);
402 mvm->dev = trans->dev;
408 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
411 mvm->first_agg_queue = 16;
412 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
413 if (mvm->cfg->base_params->num_of_queues == 16) {
415 mvm->first_agg_queue = 12;
417 mvm->sf_state = SF_UNINIT;
419 mutex_init(&mvm->mutex);
420 mutex_init(&mvm->d0i3_suspend_mutex);
421 spin_lock_init(&mvm->async_handlers_lock);
422 INIT_LIST_HEAD(&mvm->time_event_list);
423 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
424 INIT_LIST_HEAD(&mvm->async_handlers_list);
425 spin_lock_init(&mvm->time_event_lock);
427 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
428 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
429 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
430 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
432 spin_lock_init(&mvm->d0i3_tx_lock);
433 spin_lock_init(&mvm->refs_lock);
434 skb_queue_head_init(&mvm->d0i3_tx);
435 init_waitqueue_head(&mvm->d0i3_exit_waitq);
437 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
440 * Populate the state variables that the transport layer needs
443 trans_cfg.op_mode = op_mode;
444 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
445 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
446 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
448 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
449 trans_cfg.bc_table_dword = true;
451 if (!iwlwifi_mod_params.wd_disable)
452 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
454 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
456 trans_cfg.command_names = iwl_mvm_cmd_strings;
458 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
459 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
461 snprintf(mvm->hw->wiphy->fw_version,
462 sizeof(mvm->hw->wiphy->fw_version),
463 "%s", fw->fw_version);
465 /* Configure transport layer */
466 iwl_trans_configure(mvm->trans, &trans_cfg);
468 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
469 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
471 /* set up notification wait support */
472 iwl_notification_wait_init(&mvm->notif_wait);
475 mvm->phy_db = iwl_phy_db_init(trans);
477 IWL_ERR(mvm, "Cannot init phy_db\n");
481 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
482 mvm->cfg->name, mvm->trans->hw_rev);
484 min_backoff = calc_min_backoff(trans, cfg);
485 iwl_mvm_tt_initialize(mvm, min_backoff);
486 /* set the nvm_file_name according to priority */
487 if (iwlwifi_mod_params.nvm_file)
488 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
490 mvm->nvm_file_name = mvm->cfg->default_nvm_file;
492 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
493 "not allowing power-up and not having nvm_file\n"))
497 * Even if nvm exists in the nvm_file driver should read agin the nvm
498 * from the nic because there might be entries that exist in the OTP
499 * and not in the file.
500 * for nics with no_power_up_nic_in_init: rely completley on nvm_file
502 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
503 err = iwl_nvm_init(mvm, false);
507 err = iwl_trans_start_hw(mvm->trans);
511 mutex_lock(&mvm->mutex);
512 err = iwl_run_init_mvm_ucode(mvm, true);
513 iwl_trans_stop_device(trans);
514 mutex_unlock(&mvm->mutex);
515 /* returns 0 if successful, 1 if success but in rfkill */
516 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
517 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
522 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
523 scan_size = sizeof(struct iwl_scan_req_unified_lmac) +
524 sizeof(struct iwl_scan_channel_cfg_lmac) *
525 mvm->fw->ucode_capa.n_scan_channels +
526 sizeof(struct iwl_scan_probe_req);
528 scan_size = sizeof(struct iwl_scan_cmd) +
529 mvm->fw->ucode_capa.max_probe_length +
530 mvm->fw->ucode_capa.n_scan_channels *
531 sizeof(struct iwl_scan_channel);
533 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
537 err = iwl_mvm_mac_setup_register(mvm);
541 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
545 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
547 /* rpm starts with a taken ref. only set the appropriate bit here. */
548 mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1;
553 ieee80211_unregister_hw(mvm->hw);
554 iwl_mvm_leds_exit(mvm);
556 iwl_phy_db_free(mvm->phy_db);
557 kfree(mvm->scan_cmd);
558 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
559 iwl_trans_op_mode_leave(trans);
560 ieee80211_free_hw(mvm->hw);
564 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
566 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
569 iwl_mvm_leds_exit(mvm);
571 iwl_mvm_tt_exit(mvm);
573 ieee80211_unregister_hw(mvm->hw);
575 kfree(mvm->scan_cmd);
576 if (mvm->fw_error_dump) {
577 vfree(mvm->fw_error_dump->op_mode_ptr);
578 vfree(mvm->fw_error_dump->trans_ptr);
579 kfree(mvm->fw_error_dump);
581 kfree(mvm->mcast_filter_cmd);
582 mvm->mcast_filter_cmd = NULL;
584 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
585 kfree(mvm->d3_resume_sram);
588 iwl_trans_op_mode_leave(mvm->trans);
590 iwl_phy_db_free(mvm->phy_db);
593 iwl_free_nvm_data(mvm->nvm_data);
594 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
595 kfree(mvm->nvm_sections[i].data);
597 ieee80211_free_hw(mvm->hw);
600 struct iwl_async_handler_entry {
601 struct list_head list;
602 struct iwl_rx_cmd_buffer rxb;
603 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
604 struct iwl_device_cmd *cmd);
607 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
609 struct iwl_async_handler_entry *entry, *tmp;
611 spin_lock_bh(&mvm->async_handlers_lock);
612 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
613 iwl_free_rxb(&entry->rxb);
614 list_del(&entry->list);
617 spin_unlock_bh(&mvm->async_handlers_lock);
620 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
622 struct iwl_mvm *mvm =
623 container_of(wk, struct iwl_mvm, async_handlers_wk);
624 struct iwl_async_handler_entry *entry, *tmp;
625 struct list_head local_list;
627 INIT_LIST_HEAD(&local_list);
629 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
630 mutex_lock(&mvm->mutex);
633 * Sync with Rx path with a lock. Remove all the entries from this list,
634 * add them to a local one (lock free), and then handle them.
636 spin_lock_bh(&mvm->async_handlers_lock);
637 list_splice_init(&mvm->async_handlers_list, &local_list);
638 spin_unlock_bh(&mvm->async_handlers_lock);
640 list_for_each_entry_safe(entry, tmp, &local_list, list) {
641 if (entry->fn(mvm, &entry->rxb, NULL))
643 "returned value from ASYNC handlers are ignored\n");
644 iwl_free_rxb(&entry->rxb);
645 list_del(&entry->list);
648 mutex_unlock(&mvm->mutex);
651 static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
652 struct iwl_rx_cmd_buffer *rxb,
653 struct iwl_device_cmd *cmd)
655 struct iwl_rx_packet *pkt = rxb_addr(rxb);
656 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
660 * Do the notification wait before RX handlers so
661 * even if the RX handler consumes the RXB we have
662 * access to it in the notification wait entry.
664 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
666 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
667 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
668 struct iwl_async_handler_entry *entry;
670 if (rx_h->cmd_id != pkt->hdr.cmd)
674 return rx_h->fn(mvm, rxb, cmd);
676 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
677 /* we can't do much... */
681 entry->rxb._page = rxb_steal_page(rxb);
682 entry->rxb._offset = rxb->_offset;
683 entry->rxb._rx_page_order = rxb->_rx_page_order;
684 entry->fn = rx_h->fn;
685 spin_lock(&mvm->async_handlers_lock);
686 list_add_tail(&entry->list, &mvm->async_handlers_list);
687 spin_unlock(&mvm->async_handlers_lock);
688 schedule_work(&mvm->async_handlers_wk);
695 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
697 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
698 int mq = mvm->queue_to_mac80211[queue];
700 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
703 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
704 IWL_DEBUG_TX_QUEUES(mvm,
705 "queue %d (mac80211 %d) already stopped\n",
710 set_bit(mq, &mvm->transport_queue_stop);
711 ieee80211_stop_queue(mvm->hw, mq);
714 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
716 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
717 int mq = mvm->queue_to_mac80211[queue];
719 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
722 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
723 IWL_DEBUG_TX_QUEUES(mvm,
724 "queue %d (mac80211 %d) already awake\n",
729 clear_bit(mq, &mvm->transport_queue_stop);
731 ieee80211_wake_queue(mvm->hw, mq);
734 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
737 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
739 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
741 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
744 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
746 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
749 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
751 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
753 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
755 return state && mvm->cur_ucode != IWL_UCODE_INIT;
758 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
760 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
761 struct ieee80211_tx_info *info;
763 info = IEEE80211_SKB_CB(skb);
764 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
765 ieee80211_free_txskb(mvm->hw, skb);
768 struct iwl_mvm_reprobe {
770 struct work_struct work;
773 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
775 struct iwl_mvm_reprobe *reprobe;
777 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
778 if (device_reprobe(reprobe->dev))
779 dev_err(reprobe->dev, "reprobe failed!\n");
781 module_put(THIS_MODULE);
784 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
786 iwl_abort_notification_waits(&mvm->notif_wait);
789 * This is a bit racy, but worst case we tell mac80211 about
790 * a stopped/aborted scan when that was already done which
791 * is not a problem. It is necessary to abort any os scan
792 * here because mac80211 requires having the scan cleared
794 * We'll reset the scan_status to NONE in restart cleanup in
795 * the next start() call from mac80211. If restart isn't called
796 * (no fw restart) scan status will stay busy.
798 switch (mvm->scan_status) {
799 case IWL_MVM_SCAN_NONE:
801 case IWL_MVM_SCAN_OS:
802 ieee80211_scan_completed(mvm->hw, true);
804 case IWL_MVM_SCAN_SCHED:
805 /* Sched scan will be restarted by mac80211 in restart_hw. */
806 if (!mvm->restart_fw)
807 ieee80211_sched_scan_stopped(mvm->hw);
812 * If we're restarting already, don't cycle restarts.
813 * If INIT fw asserted, it will likely fail again.
814 * If WoWLAN fw asserted, don't restart either, mac80211
815 * can't recover this since we're already half suspended.
817 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
818 struct iwl_mvm_reprobe *reprobe;
821 "Firmware error during reconfiguration - reprobe!\n");
824 * get a module reference to avoid doing this while unloading
825 * anyway and to avoid scheduling a work with code that's
828 if (!try_module_get(THIS_MODULE)) {
829 IWL_ERR(mvm, "Module is being unloaded - abort\n");
833 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
835 module_put(THIS_MODULE);
838 reprobe->dev = mvm->trans->dev;
839 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
840 schedule_work(&reprobe->work);
841 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
842 (!fw_error || mvm->restart_fw)) {
843 /* don't let the transport/FW power down */
844 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
846 if (fw_error && mvm->restart_fw > 0)
848 ieee80211_restart_hw(mvm->hw);
852 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
854 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
856 iwl_mvm_dump_nic_error_log(mvm);
858 iwl_mvm_nic_restart(mvm, true);
861 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
863 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
866 iwl_mvm_nic_restart(mvm, true);
869 struct iwl_d0i3_iter_data {
874 bool disable_offloading;
877 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
878 struct ieee80211_vif *vif,
879 struct iwl_d0i3_iter_data *iter_data)
881 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
882 struct ieee80211_sta *ap_sta;
883 struct iwl_mvm_sta *mvmsta;
884 u32 available_tids = 0;
887 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
888 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
891 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
892 if (IS_ERR_OR_NULL(ap_sta))
895 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
896 spin_lock_bh(&mvmsta->lock);
897 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
898 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
901 * in case of pending tx packets, don't use this tid
902 * for offloading in order to prevent reuse of the same
905 if (iwl_mvm_tid_queued(tid_data))
908 if (tid_data->state != IWL_AGG_OFF)
911 available_tids |= BIT(tid);
913 spin_unlock_bh(&mvmsta->lock);
916 * disallow protocol offloading if we have no available tid
917 * (with no pending frames and no active aggregation,
918 * as we don't handle "holes" properly - the scheduler needs the
919 * frame's seq number and TFD index to match)
924 /* for simplicity, just use the first available tid */
925 iter_data->offloading_tid = ffs(available_tids) - 1;
929 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
930 struct ieee80211_vif *vif)
932 struct iwl_d0i3_iter_data *data = _data;
933 struct iwl_mvm *mvm = data->mvm;
934 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
935 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
937 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
938 if (vif->type != NL80211_IFTYPE_STATION ||
939 !vif->bss_conf.assoc)
943 * in case of pending tx packets or active aggregations,
944 * avoid offloading features in order to prevent reuse of
945 * the same qos seq counters.
947 if (iwl_mvm_disallow_offloading(mvm, vif, data))
948 data->disable_offloading = true;
950 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
951 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags);
954 * on init/association, mvm already configures POWER_TABLE_CMD
955 * and REPLY_MCAST_FILTER_CMD, so currently don't
956 * reconfigure them (we might want to use different
957 * params later on, though).
959 data->ap_sta_id = mvmvif->ap_sta_id;
963 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
964 struct iwl_wowlan_config_cmd_v3 *cmd,
965 struct iwl_d0i3_iter_data *iter_data)
967 struct ieee80211_sta *ap_sta;
968 struct iwl_mvm_sta *mvm_ap_sta;
970 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
975 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
976 if (IS_ERR_OR_NULL(ap_sta))
979 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
980 cmd->common.is_11n_connection = ap_sta->ht_cap.ht_supported;
981 cmd->offloading_tid = iter_data->offloading_tid;
984 * The d0i3 uCode takes care of the nonqos counters,
985 * so configure only the qos seq ones.
987 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &cmd->common);
991 static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
993 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
994 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
996 struct iwl_d0i3_iter_data d0i3_iter_data = {
999 struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {
1002 cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1003 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1004 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
1005 IWL_WOWLAN_WAKEUP_BCN_FILTERING),
1008 struct iwl_d3_manager_config d3_cfg_cmd = {
1009 .min_sleep_time = cpu_to_le32(1000),
1012 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1014 /* make sure we have no running tx while configuring the qos */
1015 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1018 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1019 IEEE80211_IFACE_ITER_NORMAL,
1020 iwl_mvm_enter_d0i3_iterator,
1022 if (d0i3_iter_data.vif_count == 1) {
1023 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1024 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1026 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1027 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1028 mvm->d0i3_offloading = false;
1031 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd, &d0i3_iter_data);
1032 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1033 sizeof(wowlan_config_cmd),
1034 &wowlan_config_cmd);
1038 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1039 flags | CMD_MAKE_TRANS_IDLE,
1040 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1043 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1044 struct ieee80211_vif *vif)
1046 struct iwl_mvm *mvm = _data;
1047 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1049 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1050 if (vif->type != NL80211_IFTYPE_STATION ||
1051 !vif->bss_conf.assoc)
1054 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1057 static void iwl_mvm_d0i3_disconnect_iter(void *data, u8 *mac,
1058 struct ieee80211_vif *vif)
1060 struct iwl_mvm *mvm = data;
1061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1063 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc &&
1064 mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1065 ieee80211_connection_loss(vif);
1068 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1070 struct ieee80211_sta *sta = NULL;
1071 struct iwl_mvm_sta *mvm_ap_sta;
1073 bool wake_queues = false;
1075 lockdep_assert_held(&mvm->mutex);
1077 spin_lock_bh(&mvm->d0i3_tx_lock);
1079 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1082 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1084 /* get the sta in order to update seq numbers and re-enqueue skbs */
1085 sta = rcu_dereference_protected(
1086 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1087 lockdep_is_held(&mvm->mutex));
1089 if (IS_ERR_OR_NULL(sta)) {
1094 if (mvm->d0i3_offloading && qos_seq) {
1095 /* update qos seq numbers if offloading was enabled */
1096 mvm_ap_sta = (struct iwl_mvm_sta *)sta->drv_priv;
1097 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1098 u16 seq = le16_to_cpu(qos_seq[i]);
1099 /* firmware stores last-used one, we store next one */
1101 mvm_ap_sta->tid_data[i].seq_number = seq;
1105 /* re-enqueue (or drop) all packets */
1106 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1107 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1109 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1110 ieee80211_free_txskb(mvm->hw, skb);
1112 /* if the skb_queue is not empty, we need to wake queues */
1115 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1116 wake_up(&mvm->d0i3_exit_waitq);
1117 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1119 ieee80211_wake_queues(mvm->hw);
1121 spin_unlock_bh(&mvm->d0i3_tx_lock);
1124 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1126 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1127 struct iwl_host_cmd get_status_cmd = {
1128 .id = WOWLAN_GET_STATUSES,
1129 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1131 struct iwl_wowlan_status *status;
1133 u32 disconnection_reasons, wakeup_reasons;
1134 __le16 *qos_seq = NULL;
1136 mutex_lock(&mvm->mutex);
1137 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1141 if (!get_status_cmd.resp_pkt)
1144 status = (void *)get_status_cmd.resp_pkt->data;
1145 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1146 qos_seq = status->qos_seq_ctr;
1148 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1150 disconnection_reasons =
1151 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1152 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1153 if (wakeup_reasons & disconnection_reasons)
1154 ieee80211_iterate_active_interfaces(
1155 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1156 iwl_mvm_d0i3_disconnect_iter, mvm);
1158 iwl_free_resp(&get_status_cmd);
1160 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1161 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1162 mutex_unlock(&mvm->mutex);
1165 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1167 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1171 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1173 mutex_lock(&mvm->d0i3_suspend_mutex);
1174 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1175 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1176 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1177 mutex_unlock(&mvm->d0i3_suspend_mutex);
1180 mutex_unlock(&mvm->d0i3_suspend_mutex);
1182 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1186 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1187 IEEE80211_IFACE_ITER_NORMAL,
1188 iwl_mvm_exit_d0i3_iterator,
1191 schedule_work(&mvm->d0i3_exit_work);
1195 static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1197 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1199 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1200 return _iwl_mvm_exit_d0i3(mvm);
1203 static void iwl_mvm_napi_add(struct iwl_op_mode *op_mode,
1204 struct napi_struct *napi,
1205 struct net_device *napi_dev,
1206 int (*poll)(struct napi_struct *, int),
1209 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1211 ieee80211_napi_add(mvm->hw, napi, napi_dev, poll, weight);
1214 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1215 .start = iwl_op_mode_mvm_start,
1216 .stop = iwl_op_mode_mvm_stop,
1217 .rx = iwl_mvm_rx_dispatch,
1218 .queue_full = iwl_mvm_stop_sw_queue,
1219 .queue_not_full = iwl_mvm_wake_sw_queue,
1220 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
1221 .free_skb = iwl_mvm_free_skb,
1222 .nic_error = iwl_mvm_nic_error,
1223 .cmd_queue_full = iwl_mvm_cmd_queue_full,
1224 .nic_config = iwl_mvm_nic_config,
1225 .enter_d0i3 = iwl_mvm_enter_d0i3,
1226 .exit_d0i3 = iwl_mvm_exit_d0i3,
1227 .napi_add = iwl_mvm_napi_add,