1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <linuxwifi@intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
36 * Copyright(c) 2016 Intel Deutschland GmbH
37 * All rights reserved.
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
43 * * Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * * Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in
47 * the documentation and/or other materials provided with the
49 * * Neither the name Intel Corporation nor the names of its
50 * contributors may be used to endorse or promote products derived
51 * from this software without specific prior written permission.
53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *****************************************************************************/
66 #include <linux/module.h>
67 #include <linux/vmalloc.h>
68 #include <net/mac80211.h>
70 #include "iwl-notif-wait.h"
71 #include "iwl-trans.h"
72 #include "iwl-op-mode.h"
74 #include "iwl-debug.h"
76 #include "iwl-modparams.h"
78 #include "iwl-phy-db.h"
79 #include "iwl-eeprom-parse.h"
84 #include "fw-api-scan.h"
85 #include "time-event.h"
88 #include "fw-api-scan.h"
90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
91 MODULE_DESCRIPTION(DRV_DESCRIPTION);
92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
93 MODULE_LICENSE("GPL");
95 static const struct iwl_op_mode_ops iwl_mvm_ops;
96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
98 struct iwl_mvm_mod_params iwlmvm_mod_params = {
99 .power_scheme = IWL_POWER_SCHEME_BPS,
100 .tfd_q_hang_detect = true
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");
110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
112 MODULE_PARM_DESC(tfd_q_hang_detect,
113 "TFD queues hang detection (default: true");
116 * module init and exit functions
118 static int __init iwl_mvm_init(void)
122 ret = iwl_mvm_rate_control_register();
124 pr_err("Unable to register rate control algorithm: %d\n", ret);
128 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
131 pr_err("Unable to register MVM op_mode: %d\n", ret);
132 iwl_mvm_rate_control_unregister();
137 module_init(iwl_mvm_init);
139 static void __exit iwl_mvm_exit(void)
141 iwl_opmode_deregister("iwlmvm");
142 iwl_mvm_rate_control_unregister();
144 module_exit(iwl_mvm_exit);
146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
148 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
149 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
151 u32 phy_config = iwl_mvm_get_phy_config(mvm);
153 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
154 FW_PHY_CFG_RADIO_TYPE_POS;
155 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
156 FW_PHY_CFG_RADIO_STEP_POS;
157 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
158 FW_PHY_CFG_RADIO_DASH_POS;
161 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
162 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
163 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
164 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
166 /* radio configuration */
167 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
168 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
169 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
171 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
172 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
175 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
176 * shouldn't be set to any non-zero value. The same is supposed to be
177 * true of the other HW, but unsetting them (such as the 7260) causes
178 * automatic tests to fail on seemingly unrelated errors. Need to
179 * further investigate this, but for now we'll separate cases.
181 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
182 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
184 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
185 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
186 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
187 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
188 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
189 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
190 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
191 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
194 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
195 radio_cfg_step, radio_cfg_dash);
198 * W/A : NIC is stuck in a reset state after Early PCIe power off
199 * (PCIe power is lost before PERST# is asserted), causing ME FW
200 * to lose ownership and not being able to obtain it back.
202 if (!mvm->trans->cfg->apmg_not_supported)
203 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
204 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
205 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
209 * enum iwl_rx_handler_context context for Rx handler
210 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
211 * which can't acquire mvm->mutex.
212 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
213 * (and only in this case!), it should be set as ASYNC. In that case,
214 * it will be called from a worker with mvm->mutex held.
215 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
216 * mutex itself, it will be called from a worker without mvm->mutex held.
218 enum iwl_rx_handler_context {
220 RX_HANDLER_ASYNC_LOCKED,
221 RX_HANDLER_ASYNC_UNLOCKED,
225 * struct iwl_rx_handlers handler for FW notification
226 * @cmd_id: command id
227 * @context: see &iwl_rx_handler_context
228 * @fn: the function is called when notification is received
230 struct iwl_rx_handlers {
232 enum iwl_rx_handler_context context;
233 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
236 #define RX_HANDLER(_cmd_id, _fn, _context) \
237 { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \
239 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
242 * Handlers for fw notifications
243 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
244 * This list should be in order of frequency for performance purposes.
246 * The handler can be one from three contexts, see &iwl_rx_handler_context
248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
249 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
250 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
252 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
253 RX_HANDLER_ASYNC_LOCKED),
254 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
255 RX_HANDLER_ASYNC_LOCKED),
256 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
257 RX_HANDLER_ASYNC_LOCKED),
258 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
259 iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED),
261 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
262 iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
264 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
266 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
267 RX_HANDLER_ASYNC_LOCKED),
269 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
271 RX_HANDLER(SCAN_ITERATION_COMPLETE,
272 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
273 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
274 iwl_mvm_rx_lmac_scan_complete_notif,
275 RX_HANDLER_ASYNC_LOCKED),
276 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
278 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
279 RX_HANDLER_ASYNC_LOCKED),
280 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
281 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
283 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
286 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
289 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
290 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
291 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
292 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
293 RX_HANDLER_ASYNC_LOCKED),
294 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
295 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
296 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
297 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
299 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
300 RX_HANDLER_ASYNC_LOCKED),
301 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
303 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
304 RX_HANDLER_ASYNC_LOCKED),
305 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
306 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
307 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
308 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
309 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
310 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
311 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
312 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
315 #undef RX_HANDLER_GRP
317 /* Please keep this array *SORTED* by hex value.
318 * Access is done through binary search
320 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
321 HCMD_NAME(MVM_ALIVE),
322 HCMD_NAME(REPLY_ERROR),
324 HCMD_NAME(INIT_COMPLETE_NOTIF),
325 HCMD_NAME(PHY_CONTEXT_CMD),
327 HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION),
328 HCMD_NAME(SCAN_CFG_CMD),
329 HCMD_NAME(SCAN_REQ_UMAC),
330 HCMD_NAME(SCAN_ABORT_UMAC),
331 HCMD_NAME(SCAN_COMPLETE_UMAC),
333 HCMD_NAME(TOF_NOTIFICATION),
334 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
335 HCMD_NAME(ADD_STA_KEY),
337 HCMD_NAME(REMOVE_STA),
338 HCMD_NAME(FW_GET_ITEM_CMD),
340 HCMD_NAME(SCD_QUEUE_CFG),
341 HCMD_NAME(TXPATH_FLUSH),
342 HCMD_NAME(MGMT_MCAST_KEY),
344 HCMD_NAME(SHARED_MEM_CFG),
345 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
346 HCMD_NAME(MAC_CONTEXT_CMD),
347 HCMD_NAME(TIME_EVENT_CMD),
348 HCMD_NAME(TIME_EVENT_NOTIFICATION),
349 HCMD_NAME(BINDING_CONTEXT_CMD),
350 HCMD_NAME(TIME_QUOTA_CMD),
351 HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
353 HCMD_NAME(FW_PAGING_BLOCK_CMD),
354 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
355 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
356 HCMD_NAME(HOT_SPOT_CMD),
357 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
358 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
359 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
360 HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
361 HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
362 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
363 HCMD_NAME(BT_COEX_CI),
364 HCMD_NAME(PHY_CONFIGURATION_CMD),
365 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
366 HCMD_NAME(PHY_DB_CMD),
367 HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
368 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
369 HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
370 HCMD_NAME(POWER_TABLE_CMD),
371 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
372 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
373 HCMD_NAME(DC2DC_CONFIG_CMD),
374 HCMD_NAME(NVM_ACCESS_CMD),
375 HCMD_NAME(SET_CALIB_DEFAULT_CMD),
376 HCMD_NAME(BEACON_NOTIFICATION),
377 HCMD_NAME(BEACON_TEMPLATE_CMD),
378 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
379 HCMD_NAME(BT_CONFIG),
380 HCMD_NAME(STATISTICS_CMD),
381 HCMD_NAME(STATISTICS_NOTIFICATION),
382 HCMD_NAME(EOSP_NOTIFICATION),
383 HCMD_NAME(REDUCE_TX_POWER_CMD),
384 HCMD_NAME(CARD_STATE_CMD),
385 HCMD_NAME(CARD_STATE_NOTIFICATION),
386 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
387 HCMD_NAME(TDLS_CONFIG_CMD),
388 HCMD_NAME(MAC_PM_POWER_TABLE),
389 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
390 HCMD_NAME(MFUART_LOAD_NOTIFICATION),
391 HCMD_NAME(RSS_CONFIG_CMD),
392 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
393 HCMD_NAME(REPLY_RX_PHY_CMD),
394 HCMD_NAME(REPLY_RX_MPDU_CMD),
396 HCMD_NAME(MCC_UPDATE_CMD),
397 HCMD_NAME(MCC_CHUB_UPDATE_CMD),
398 HCMD_NAME(MARKER_CMD),
399 HCMD_NAME(BT_COEX_PRIO_TABLE),
400 HCMD_NAME(BT_COEX_PROT_ENV),
401 HCMD_NAME(BT_PROFILE_NOTIFICATION),
402 HCMD_NAME(BCAST_FILTER_CMD),
403 HCMD_NAME(MCAST_FILTER_CMD),
404 HCMD_NAME(REPLY_SF_CFG_CMD),
405 HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
406 HCMD_NAME(D3_CONFIG_CMD),
407 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
408 HCMD_NAME(OFFLOADS_QUERY_CMD),
409 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
410 HCMD_NAME(MATCH_FOUND_NOTIFICATION),
411 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
412 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
413 HCMD_NAME(WOWLAN_PATTERNS),
414 HCMD_NAME(WOWLAN_CONFIGURATION),
415 HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
416 HCMD_NAME(WOWLAN_TKIP_PARAM),
417 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
418 HCMD_NAME(WOWLAN_GET_STATUSES),
419 HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
420 HCMD_NAME(SCAN_ITERATION_COMPLETE),
421 HCMD_NAME(D0I3_END_CMD),
422 HCMD_NAME(LTR_CONFIG),
423 HCMD_NAME(REPLY_DEBUG_CMD),
426 /* Please keep this array *SORTED* by hex value.
427 * Access is done through binary search
429 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
430 HCMD_NAME(SHARED_MEM_CFG_CMD),
431 HCMD_NAME(INIT_EXTENDED_CFG_CMD),
434 /* Please keep this array *SORTED* by hex value.
435 * Access is done through binary search
437 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
438 HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
439 HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
440 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
443 /* Please keep this array *SORTED* by hex value.
444 * Access is done through binary search
446 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
447 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
448 HCMD_NAME(CTDP_CONFIG_CMD),
449 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
450 HCMD_NAME(GEO_TX_POWER_LIMIT),
451 HCMD_NAME(CT_KILL_NOTIFICATION),
452 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
455 /* Please keep this array *SORTED* by hex value.
456 * Access is done through binary search
458 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
459 HCMD_NAME(DQA_ENABLE_CMD),
460 HCMD_NAME(UPDATE_MU_GROUPS_CMD),
461 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
462 HCMD_NAME(STA_PM_NOTIF),
463 HCMD_NAME(MU_GROUP_MGMT_NOTIF),
464 HCMD_NAME(RX_QUEUES_NOTIFICATION),
467 /* Please keep this array *SORTED* by hex value.
468 * Access is done through binary search
470 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
471 HCMD_NAME(MFU_ASSERT_DUMP_NTF),
474 /* Please keep this array *SORTED* by hex value.
475 * Access is done through binary search
477 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
478 HCMD_NAME(STORED_BEACON_NTF),
481 /* Please keep this array *SORTED* by hex value.
482 * Access is done through binary search
484 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
485 HCMD_NAME(NVM_ACCESS_COMPLETE),
488 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
489 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
490 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
491 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
492 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
493 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
494 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
495 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
496 [REGULATORY_AND_NVM_GROUP] =
497 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
500 /* this forward declaration can avoid to export the function */
501 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
502 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
504 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
506 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
511 while (pwr_tx_backoff->pwr) {
512 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
513 return pwr_tx_backoff->backoff;
521 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
523 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
525 struct iwl_mvm *mvm =
526 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
527 struct ieee80211_vif *tx_blocked_vif;
528 struct iwl_mvm_vif *mvmvif;
530 mutex_lock(&mvm->mutex);
533 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
534 lockdep_is_held(&mvm->mutex));
539 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
540 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
541 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
543 mutex_unlock(&mvm->mutex);
546 static struct iwl_op_mode *
547 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
548 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
550 struct ieee80211_hw *hw;
551 struct iwl_op_mode *op_mode;
553 struct iwl_trans_config trans_cfg = {};
554 static const u8 no_reclaim_cmds[] = {
561 * We use IWL_MVM_STATION_COUNT to check the validity of the station
562 * index all over the driver - check that its value corresponds to the
565 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
567 /********************************
568 * 1. Allocating and configuring HW data
569 ********************************/
570 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
571 sizeof(struct iwl_mvm),
576 if (cfg->max_rx_agg_size)
577 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
579 if (cfg->max_tx_agg_size)
580 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
584 mvm = IWL_OP_MODE_GET_MVM(op_mode);
585 mvm->dev = trans->dev;
591 if (iwl_mvm_has_new_rx_api(mvm)) {
592 op_mode->ops = &iwl_mvm_ops_mq;
593 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
595 op_mode->ops = &iwl_mvm_ops;
596 trans->rx_mpdu_cmd_hdr_size =
597 sizeof(struct iwl_rx_mpdu_res_start);
599 if (WARN_ON(trans->num_rx_queues > 1))
603 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
605 if (!iwl_mvm_is_dqa_supported(mvm)) {
606 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
608 if (mvm->cfg->base_params->num_of_queues == 16) {
610 mvm->first_agg_queue = 12;
613 mvm->first_agg_queue = 16;
616 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
617 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
618 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
619 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
620 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
622 mvm->sf_state = SF_UNINIT;
623 if (iwl_mvm_has_new_tx_api(mvm))
624 mvm->cur_ucode = IWL_UCODE_REGULAR;
626 mvm->cur_ucode = IWL_UCODE_INIT;
627 mvm->drop_bcn_ap_mode = true;
629 mutex_init(&mvm->mutex);
630 mutex_init(&mvm->d0i3_suspend_mutex);
631 spin_lock_init(&mvm->async_handlers_lock);
632 INIT_LIST_HEAD(&mvm->time_event_list);
633 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
634 INIT_LIST_HEAD(&mvm->async_handlers_list);
635 spin_lock_init(&mvm->time_event_lock);
636 spin_lock_init(&mvm->queue_info_lock);
638 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
639 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
640 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
641 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
642 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
643 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
644 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
645 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
647 spin_lock_init(&mvm->d0i3_tx_lock);
648 spin_lock_init(&mvm->refs_lock);
649 skb_queue_head_init(&mvm->d0i3_tx);
650 init_waitqueue_head(&mvm->d0i3_exit_waitq);
651 init_waitqueue_head(&mvm->rx_sync_waitq);
653 atomic_set(&mvm->queue_sync_counter, 0);
655 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
657 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
660 * Populate the state variables that the transport layer needs
663 trans_cfg.op_mode = op_mode;
664 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
665 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
666 switch (iwlwifi_mod_params.amsdu_size) {
669 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
672 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
675 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
678 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
679 iwlwifi_mod_params.amsdu_size);
680 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
683 /* the hardware splits the A-MSDU */
684 if (mvm->cfg->mq_rx_supported)
685 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
687 trans->wide_cmd_header = true;
688 trans_cfg.bc_table_dword = true;
690 trans_cfg.command_groups = iwl_mvm_groups;
691 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
693 if (iwl_mvm_is_dqa_supported(mvm))
694 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
696 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
697 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
698 trans_cfg.scd_set_active = true;
700 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
703 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
704 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
706 /* Set a short watchdog for the command queue */
707 trans_cfg.cmd_q_wdg_timeout =
708 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
710 snprintf(mvm->hw->wiphy->fw_version,
711 sizeof(mvm->hw->wiphy->fw_version),
712 "%s", fw->fw_version);
714 /* Configure transport layer */
715 iwl_trans_configure(mvm->trans, &trans_cfg);
717 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
718 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
719 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
720 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
721 sizeof(trans->dbg_conf_tlv));
722 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
724 /* set up notification wait support */
725 iwl_notification_wait_init(&mvm->notif_wait);
728 mvm->phy_db = iwl_phy_db_init(trans);
730 IWL_ERR(mvm, "Cannot init phy_db\n");
734 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
735 mvm->cfg->name, mvm->trans->hw_rev);
737 if (iwlwifi_mod_params.nvm_file)
738 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
740 IWL_DEBUG_EEPROM(mvm->trans->dev,
741 "working without external nvm file\n");
743 err = iwl_trans_start_hw(mvm->trans);
747 mutex_lock(&mvm->mutex);
748 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
749 err = iwl_run_init_mvm_ucode(mvm, true);
750 if (!err || !iwlmvm_mod_params.init_dbg)
751 iwl_mvm_stop_device(mvm);
752 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
753 mutex_unlock(&mvm->mutex);
754 /* returns 0 if successful, 1 if success but in rfkill */
755 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
756 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
760 scan_size = iwl_mvm_scan_size(mvm);
762 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
766 /* Set EBS as successful as long as not stated otherwise by the FW. */
767 mvm->last_ebs_successful = true;
769 err = iwl_mvm_mac_setup_register(mvm);
772 mvm->hw_registered = true;
774 min_backoff = calc_min_backoff(trans, cfg);
775 iwl_mvm_thermal_initialize(mvm, min_backoff);
777 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
781 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
783 /* The transport always starts with a taken reference, we can
784 * release it now if d0i3 is supported */
785 if (iwl_mvm_is_d0i3_supported(mvm))
786 iwl_trans_unref(mvm->trans);
788 iwl_mvm_tof_init(mvm);
793 ieee80211_unregister_hw(mvm->hw);
794 mvm->hw_registered = false;
795 iwl_mvm_leds_exit(mvm);
796 iwl_mvm_thermal_exit(mvm);
798 flush_delayed_work(&mvm->fw_dump_wk);
799 iwl_phy_db_free(mvm->phy_db);
800 kfree(mvm->scan_cmd);
801 iwl_trans_op_mode_leave(trans);
803 ieee80211_free_hw(mvm->hw);
807 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
809 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
812 /* If d0i3 is supported, we have released the reference that
813 * the transport started with, so we should take it back now
814 * that we are leaving.
816 if (iwl_mvm_is_d0i3_supported(mvm))
817 iwl_trans_ref(mvm->trans);
819 iwl_mvm_leds_exit(mvm);
821 iwl_mvm_thermal_exit(mvm);
823 ieee80211_unregister_hw(mvm->hw);
825 kfree(mvm->scan_cmd);
826 kfree(mvm->mcast_filter_cmd);
827 mvm->mcast_filter_cmd = NULL;
829 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
830 kfree(mvm->d3_resume_sram);
833 iwl_trans_op_mode_leave(mvm->trans);
835 iwl_phy_db_free(mvm->phy_db);
838 iwl_free_nvm_data(mvm->nvm_data);
839 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
840 kfree(mvm->nvm_sections[i].data);
842 iwl_mvm_tof_clean(mvm);
844 mutex_destroy(&mvm->mutex);
845 mutex_destroy(&mvm->d0i3_suspend_mutex);
847 ieee80211_free_hw(mvm->hw);
850 struct iwl_async_handler_entry {
851 struct list_head list;
852 struct iwl_rx_cmd_buffer rxb;
853 enum iwl_rx_handler_context context;
854 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
857 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
859 struct iwl_async_handler_entry *entry, *tmp;
861 spin_lock_bh(&mvm->async_handlers_lock);
862 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
863 iwl_free_rxb(&entry->rxb);
864 list_del(&entry->list);
867 spin_unlock_bh(&mvm->async_handlers_lock);
870 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
872 struct iwl_mvm *mvm =
873 container_of(wk, struct iwl_mvm, async_handlers_wk);
874 struct iwl_async_handler_entry *entry, *tmp;
875 LIST_HEAD(local_list);
877 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
880 * Sync with Rx path with a lock. Remove all the entries from this list,
881 * add them to a local one (lock free), and then handle them.
883 spin_lock_bh(&mvm->async_handlers_lock);
884 list_splice_init(&mvm->async_handlers_list, &local_list);
885 spin_unlock_bh(&mvm->async_handlers_lock);
887 list_for_each_entry_safe(entry, tmp, &local_list, list) {
888 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
889 mutex_lock(&mvm->mutex);
890 entry->fn(mvm, &entry->rxb);
891 iwl_free_rxb(&entry->rxb);
892 list_del(&entry->list);
893 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
894 mutex_unlock(&mvm->mutex);
899 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
900 struct iwl_rx_packet *pkt)
902 struct iwl_fw_dbg_trigger_tlv *trig;
903 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
906 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
909 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
910 cmds_trig = (void *)trig->data;
912 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
915 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
916 /* don't collect on CMD 0 */
917 if (!cmds_trig->cmds[i].cmd_id)
920 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
921 cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
924 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
925 "CMD 0x%02x.%02x received",
926 pkt->hdr.group_id, pkt->hdr.cmd);
931 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
932 struct iwl_rx_cmd_buffer *rxb,
933 struct iwl_rx_packet *pkt)
937 iwl_mvm_rx_check_trigger(mvm, pkt);
940 * Do the notification wait before RX handlers so
941 * even if the RX handler consumes the RXB we have
942 * access to it in the notification wait entry.
944 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
946 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
947 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
948 struct iwl_async_handler_entry *entry;
950 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
953 if (rx_h->context == RX_HANDLER_SYNC) {
958 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
959 /* we can't do much... */
963 entry->rxb._page = rxb_steal_page(rxb);
964 entry->rxb._offset = rxb->_offset;
965 entry->rxb._rx_page_order = rxb->_rx_page_order;
966 entry->fn = rx_h->fn;
967 entry->context = rx_h->context;
968 spin_lock(&mvm->async_handlers_lock);
969 list_add_tail(&entry->list, &mvm->async_handlers_list);
970 spin_unlock(&mvm->async_handlers_lock);
971 schedule_work(&mvm->async_handlers_wk);
976 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
977 struct napi_struct *napi,
978 struct iwl_rx_cmd_buffer *rxb)
980 struct iwl_rx_packet *pkt = rxb_addr(rxb);
981 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
982 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
984 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
985 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
986 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
987 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
989 iwl_mvm_rx_common(mvm, rxb, pkt);
992 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
993 struct napi_struct *napi,
994 struct iwl_rx_cmd_buffer *rxb)
996 struct iwl_rx_packet *pkt = rxb_addr(rxb);
997 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
998 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1000 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1001 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1002 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1003 RX_QUEUES_NOTIFICATION)))
1004 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1005 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1006 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1008 iwl_mvm_rx_common(mvm, rxb, pkt);
1011 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1015 if (WARN_ON_ONCE(!mq))
1018 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1019 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1020 IWL_DEBUG_TX_QUEUES(mvm,
1021 "mac80211 %d already stopped\n", q);
1025 ieee80211_stop_queue(mvm->hw, q);
1029 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1030 const struct iwl_device_cmd *cmd)
1032 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1035 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1036 * commands that need to block the Tx queues.
1038 iwl_trans_block_txq_ptrs(mvm->trans, false);
1041 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1043 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1046 spin_lock_bh(&mvm->queue_info_lock);
1047 mq = mvm->hw_queue_to_mac80211[hw_queue];
1048 spin_unlock_bh(&mvm->queue_info_lock);
1050 iwl_mvm_stop_mac_queues(mvm, mq);
1053 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1057 if (WARN_ON_ONCE(!mq))
1060 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1061 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1062 IWL_DEBUG_TX_QUEUES(mvm,
1063 "mac80211 %d still stopped\n", q);
1067 ieee80211_wake_queue(mvm->hw, q);
1071 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1073 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1076 spin_lock_bh(&mvm->queue_info_lock);
1077 mq = mvm->hw_queue_to_mac80211[hw_queue];
1078 spin_unlock_bh(&mvm->queue_info_lock);
1080 iwl_mvm_start_mac_queues(mvm, mq);
1083 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1086 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1088 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1090 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1093 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1095 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1096 bool calibrating = ACCESS_ONCE(mvm->calibrating);
1099 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1101 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1103 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1105 /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1107 iwl_abort_notification_waits(&mvm->notif_wait);
1110 * Stop the device if we run OPERATIONAL firmware or if we are in the
1111 * middle of the calibrations.
1113 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1116 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1118 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1119 struct ieee80211_tx_info *info;
1121 info = IEEE80211_SKB_CB(skb);
1122 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1123 ieee80211_free_txskb(mvm->hw, skb);
1126 struct iwl_mvm_reprobe {
1128 struct work_struct work;
1131 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1133 struct iwl_mvm_reprobe *reprobe;
1135 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1136 if (device_reprobe(reprobe->dev))
1137 dev_err(reprobe->dev, "reprobe failed!\n");
1139 module_put(THIS_MODULE);
1142 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1144 struct iwl_mvm *mvm =
1145 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1147 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1150 mutex_lock(&mvm->mutex);
1152 /* stop recording */
1153 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1154 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1156 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1157 /* wait before we collect the data till the DBGC stop */
1161 iwl_mvm_fw_error_dump(mvm);
1163 /* start recording again if the firmware is not crashed */
1164 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1165 mvm->fw->dbg_dest_tlv &&
1166 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1168 mutex_unlock(&mvm->mutex);
1170 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1173 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1175 iwl_abort_notification_waits(&mvm->notif_wait);
1178 * This is a bit racy, but worst case we tell mac80211 about
1179 * a stopped/aborted scan when that was already done which
1180 * is not a problem. It is necessary to abort any os scan
1181 * here because mac80211 requires having the scan cleared
1182 * before restarting.
1183 * We'll reset the scan_status to NONE in restart cleanup in
1184 * the next start() call from mac80211. If restart isn't called
1185 * (no fw restart) scan status will stay busy.
1187 iwl_mvm_report_scan_aborted(mvm);
1190 * If we're restarting already, don't cycle restarts.
1191 * If INIT fw asserted, it will likely fail again.
1192 * If WoWLAN fw asserted, don't restart either, mac80211
1193 * can't recover this since we're already half suspended.
1195 if (!mvm->restart_fw && fw_error) {
1196 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1198 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1200 struct iwl_mvm_reprobe *reprobe;
1203 "Firmware error during reconfiguration - reprobe!\n");
1206 * get a module reference to avoid doing this while unloading
1207 * anyway and to avoid scheduling a work with code that's
1210 if (!try_module_get(THIS_MODULE)) {
1211 IWL_ERR(mvm, "Module is being unloaded - abort\n");
1215 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1217 module_put(THIS_MODULE);
1220 reprobe->dev = mvm->trans->dev;
1221 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1222 schedule_work(&reprobe->work);
1223 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
1224 mvm->hw_registered) {
1225 /* don't let the transport/FW power down */
1226 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1228 if (fw_error && mvm->restart_fw > 0)
1230 ieee80211_restart_hw(mvm->hw);
1234 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1236 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1238 iwl_mvm_dump_nic_error_log(mvm);
1240 iwl_mvm_nic_restart(mvm, true);
1243 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1245 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1248 iwl_mvm_nic_restart(mvm, true);
1251 struct iwl_d0i3_iter_data {
1252 struct iwl_mvm *mvm;
1253 struct ieee80211_vif *connected_vif;
1257 bool disable_offloading;
1260 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1261 struct ieee80211_vif *vif,
1262 struct iwl_d0i3_iter_data *iter_data)
1264 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1265 struct iwl_mvm_sta *mvmsta;
1266 u32 available_tids = 0;
1269 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1270 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1273 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1277 spin_lock_bh(&mvmsta->lock);
1278 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1279 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1282 * in case of pending tx packets, don't use this tid
1283 * for offloading in order to prevent reuse of the same
1286 if (iwl_mvm_tid_queued(tid_data))
1289 if (tid_data->state != IWL_AGG_OFF)
1292 available_tids |= BIT(tid);
1294 spin_unlock_bh(&mvmsta->lock);
1297 * disallow protocol offloading if we have no available tid
1298 * (with no pending frames and no active aggregation,
1299 * as we don't handle "holes" properly - the scheduler needs the
1300 * frame's seq number and TFD index to match)
1302 if (!available_tids)
1305 /* for simplicity, just use the first available tid */
1306 iter_data->offloading_tid = ffs(available_tids) - 1;
1310 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1311 struct ieee80211_vif *vif)
1313 struct iwl_d0i3_iter_data *data = _data;
1314 struct iwl_mvm *mvm = data->mvm;
1315 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1316 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1318 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1319 if (vif->type != NL80211_IFTYPE_STATION ||
1320 !vif->bss_conf.assoc)
1324 * in case of pending tx packets or active aggregations,
1325 * avoid offloading features in order to prevent reuse of
1326 * the same qos seq counters.
1328 if (iwl_mvm_disallow_offloading(mvm, vif, data))
1329 data->disable_offloading = true;
1331 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1332 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1336 * on init/association, mvm already configures POWER_TABLE_CMD
1337 * and REPLY_MCAST_FILTER_CMD, so currently don't
1338 * reconfigure them (we might want to use different
1339 * params later on, though).
1341 data->ap_sta_id = mvmvif->ap_sta_id;
1345 * no new commands can be sent at this stage, so it's safe
1346 * to save the vif pointer during d0i3 entrance.
1348 data->connected_vif = vif;
1351 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1352 struct iwl_wowlan_config_cmd *cmd,
1353 struct iwl_d0i3_iter_data *iter_data)
1355 struct ieee80211_sta *ap_sta;
1356 struct iwl_mvm_sta *mvm_ap_sta;
1358 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1363 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1364 if (IS_ERR_OR_NULL(ap_sta))
1367 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1368 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1369 cmd->offloading_tid = iter_data->offloading_tid;
1370 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1371 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1373 * The d0i3 uCode takes care of the nonqos counters,
1374 * so configure only the qos seq ones.
1376 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1381 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1383 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1384 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1386 struct iwl_d0i3_iter_data d0i3_iter_data = {
1389 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1390 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1391 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1392 IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1394 struct iwl_d3_manager_config d3_cfg_cmd = {
1395 .min_sleep_time = cpu_to_le32(1000),
1396 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1399 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1401 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1404 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1407 * iwl_mvm_ref_sync takes a reference before checking the flag.
1408 * so by checking there is no held reference we prevent a state
1409 * in which iwl_mvm_ref_sync continues successfully while we
1410 * configure the firmware to enter d0i3
1412 if (iwl_mvm_ref_taken(mvm)) {
1413 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1414 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1415 wake_up(&mvm->d0i3_exit_waitq);
1419 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1420 IEEE80211_IFACE_ITER_NORMAL,
1421 iwl_mvm_enter_d0i3_iterator,
1423 if (d0i3_iter_data.vif_count == 1) {
1424 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1425 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1427 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1428 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1429 mvm->d0i3_offloading = false;
1432 /* make sure we have no running tx while configuring the seqno */
1435 /* Flush the hw queues, in case something got queued during entry */
1436 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1440 /* configure wowlan configuration only if needed */
1441 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1442 /* wake on beacons only if beacon storing isn't supported */
1443 if (!fw_has_capa(&mvm->fw->ucode_capa,
1444 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1445 wowlan_config_cmd.wakeup_filter |=
1446 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1448 iwl_mvm_wowlan_config_key_params(mvm,
1449 d0i3_iter_data.connected_vif,
1452 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1455 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1456 sizeof(wowlan_config_cmd),
1457 &wowlan_config_cmd);
1462 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1463 flags | CMD_MAKE_TRANS_IDLE,
1464 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1467 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1468 struct ieee80211_vif *vif)
1470 struct iwl_mvm *mvm = _data;
1471 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1473 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1474 if (vif->type != NL80211_IFTYPE_STATION ||
1475 !vif->bss_conf.assoc)
1478 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1481 struct iwl_mvm_d0i3_exit_work_iter_data {
1482 struct iwl_mvm *mvm;
1483 struct iwl_wowlan_status *status;
1487 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1488 struct ieee80211_vif *vif)
1490 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1491 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1492 u32 reasons = data->wakeup_reasons;
1494 /* consider only the relevant station interface */
1495 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1496 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1499 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1500 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1501 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1502 ieee80211_beacon_loss(vif);
1504 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1507 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1509 struct ieee80211_sta *sta = NULL;
1510 struct iwl_mvm_sta *mvm_ap_sta;
1512 bool wake_queues = false;
1514 lockdep_assert_held(&mvm->mutex);
1516 spin_lock_bh(&mvm->d0i3_tx_lock);
1518 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1521 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1523 /* get the sta in order to update seq numbers and re-enqueue skbs */
1524 sta = rcu_dereference_protected(
1525 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1526 lockdep_is_held(&mvm->mutex));
1528 if (IS_ERR_OR_NULL(sta)) {
1533 if (mvm->d0i3_offloading && qos_seq) {
1534 /* update qos seq numbers if offloading was enabled */
1535 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1536 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1537 u16 seq = le16_to_cpu(qos_seq[i]);
1538 /* firmware stores last-used one, we store next one */
1540 mvm_ap_sta->tid_data[i].seq_number = seq;
1544 /* re-enqueue (or drop) all packets */
1545 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1546 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1548 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1549 ieee80211_free_txskb(mvm->hw, skb);
1551 /* if the skb_queue is not empty, we need to wake queues */
1554 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1555 wake_up(&mvm->d0i3_exit_waitq);
1556 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1558 ieee80211_wake_queues(mvm->hw);
1560 spin_unlock_bh(&mvm->d0i3_tx_lock);
1563 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1565 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1566 struct iwl_host_cmd get_status_cmd = {
1567 .id = WOWLAN_GET_STATUSES,
1568 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1570 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1574 struct iwl_wowlan_status *status;
1576 u32 wakeup_reasons = 0;
1577 __le16 *qos_seq = NULL;
1579 mutex_lock(&mvm->mutex);
1580 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1584 if (!get_status_cmd.resp_pkt)
1587 status = (void *)get_status_cmd.resp_pkt->data;
1588 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1589 qos_seq = status->qos_seq_ctr;
1591 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1593 iter_data.wakeup_reasons = wakeup_reasons;
1594 iter_data.status = status;
1595 ieee80211_iterate_active_interfaces(mvm->hw,
1596 IEEE80211_IFACE_ITER_NORMAL,
1597 iwl_mvm_d0i3_exit_work_iter,
1600 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1602 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1605 /* qos_seq might point inside resp_pkt, so free it only now */
1606 if (get_status_cmd.resp_pkt)
1607 iwl_free_resp(&get_status_cmd);
1609 /* the FW might have updated the regdomain */
1610 iwl_mvm_update_changed_regdom(mvm);
1612 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1613 mutex_unlock(&mvm->mutex);
1616 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1618 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1622 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1624 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1627 mutex_lock(&mvm->d0i3_suspend_mutex);
1628 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1629 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1630 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1631 mutex_unlock(&mvm->d0i3_suspend_mutex);
1634 mutex_unlock(&mvm->d0i3_suspend_mutex);
1636 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1640 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1641 IEEE80211_IFACE_ITER_NORMAL,
1642 iwl_mvm_exit_d0i3_iterator,
1645 schedule_work(&mvm->d0i3_exit_work);
1649 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1651 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1653 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1654 return _iwl_mvm_exit_d0i3(mvm);
1657 #define IWL_MVM_COMMON_OPS \
1658 /* these could be differentiated */ \
1659 .async_cb = iwl_mvm_async_cb, \
1660 .queue_full = iwl_mvm_stop_sw_queue, \
1661 .queue_not_full = iwl_mvm_wake_sw_queue, \
1662 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
1663 .free_skb = iwl_mvm_free_skb, \
1664 .nic_error = iwl_mvm_nic_error, \
1665 .cmd_queue_full = iwl_mvm_cmd_queue_full, \
1666 .nic_config = iwl_mvm_nic_config, \
1667 .enter_d0i3 = iwl_mvm_enter_d0i3, \
1668 .exit_d0i3 = iwl_mvm_exit_d0i3, \
1669 /* as we only register one, these MUST be common! */ \
1670 .start = iwl_op_mode_mvm_start, \
1671 .stop = iwl_op_mode_mvm_stop
1673 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1678 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1679 struct napi_struct *napi,
1680 struct iwl_rx_cmd_buffer *rxb,
1683 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1684 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1685 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1687 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1688 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1689 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1690 RX_QUEUES_NOTIFICATION)))
1691 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1692 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1693 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1696 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1698 .rx = iwl_mvm_rx_mq,
1699 .rx_rss = iwl_mvm_rx_mq_rss,