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
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 * Copyright(c) 2018 Intel Corporation
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
34 * Copyright(c) 2018 Intel Corporation
35 * All rights reserved.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
41 * * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
47 * * Neither the name Intel Corporation nor the names of its
48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *****************************************************************************/
64 #include <linux/module.h>
65 #include <linux/vmalloc.h>
66 #include <net/mac80211.h>
68 #include "fw/notif-wait.h"
69 #include "iwl-trans.h"
70 #include "iwl-op-mode.h"
72 #include "iwl-debug.h"
74 #include "iwl-modparams.h"
76 #include "iwl-phy-db.h"
77 #include "iwl-eeprom-parse.h"
82 #include "fw/api/scan.h"
83 #include "time-event.h"
85 #include "fw/api/scan.h"
88 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
89 MODULE_DESCRIPTION(DRV_DESCRIPTION);
90 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
91 MODULE_LICENSE("GPL");
93 static const struct iwl_op_mode_ops iwl_mvm_ops;
94 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
96 struct iwl_mvm_mod_params iwlmvm_mod_params = {
97 .power_scheme = IWL_POWER_SCHEME_BPS,
98 .tfd_q_hang_detect = true
99 /* rest of fields are 0 by default */
102 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, 0444);
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, 0444);
106 MODULE_PARM_DESC(power_scheme,
107 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
108 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
110 MODULE_PARM_DESC(tfd_q_hang_detect,
111 "TFD queues hang detection (default: true");
114 * module init and exit functions
116 static int __init iwl_mvm_init(void)
120 ret = iwl_mvm_rate_control_register();
122 pr_err("Unable to register rate control algorithm: %d\n", ret);
126 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
128 pr_err("Unable to register MVM op_mode: %d\n", ret);
132 module_init(iwl_mvm_init);
134 static void __exit iwl_mvm_exit(void)
136 iwl_opmode_deregister("iwlmvm");
137 iwl_mvm_rate_control_unregister();
139 module_exit(iwl_mvm_exit);
141 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
143 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
144 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
146 u32 phy_config = iwl_mvm_get_phy_config(mvm);
148 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
149 FW_PHY_CFG_RADIO_TYPE_POS;
150 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
151 FW_PHY_CFG_RADIO_STEP_POS;
152 radio_cfg_dash = (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 and higher set the ADC
171 * sampling, and shouldn't be set to any non-zero value.
172 * The same is supposed to be true of the other HW, but unsetting
173 * them (such as the 7260) causes automatic tests to fail on seemingly
174 * unrelated errors. Need to further investigate this, but for now
175 * we'll separate cases.
177 if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
178 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
180 if (iwl_fw_dbg_is_d3_debug_enabled(&mvm->fwrt))
181 reg_val |= CSR_HW_IF_CONFIG_REG_D3_DEBUG;
183 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
184 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
185 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
186 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
187 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
188 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
189 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
190 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI |
191 CSR_HW_IF_CONFIG_REG_D3_DEBUG,
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_GRP(DATA_PATH_GROUP, TLC_MNG_UPDATE_NOTIF,
253 iwl_mvm_tlc_update_notif, RX_HANDLER_SYNC),
255 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
256 RX_HANDLER_ASYNC_LOCKED),
257 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
258 RX_HANDLER_ASYNC_LOCKED),
259 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
260 RX_HANDLER_ASYNC_LOCKED),
262 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
263 iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
265 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
267 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
268 RX_HANDLER_ASYNC_LOCKED),
270 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
272 RX_HANDLER(SCAN_ITERATION_COMPLETE,
273 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
274 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
275 iwl_mvm_rx_lmac_scan_complete_notif,
276 RX_HANDLER_ASYNC_LOCKED),
277 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
279 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
280 RX_HANDLER_ASYNC_LOCKED),
281 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
282 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
284 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
287 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
290 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
291 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
292 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
293 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
294 RX_HANDLER_ASYNC_LOCKED),
295 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
296 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
297 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
298 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
300 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
301 RX_HANDLER_ASYNC_LOCKED),
302 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
304 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
305 RX_HANDLER_ASYNC_LOCKED),
306 RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
307 iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
308 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
309 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
310 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
311 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
312 RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
313 iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
316 #undef RX_HANDLER_GRP
318 /* Please keep this array *SORTED* by hex value.
319 * Access is done through binary search
321 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
322 HCMD_NAME(MVM_ALIVE),
323 HCMD_NAME(REPLY_ERROR),
325 HCMD_NAME(INIT_COMPLETE_NOTIF),
326 HCMD_NAME(PHY_CONTEXT_CMD),
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),
354 HCMD_NAME(FW_PAGING_BLOCK_CMD),
355 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
356 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
357 HCMD_NAME(HOT_SPOT_CMD),
358 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
359 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
360 HCMD_NAME(BT_COEX_CI),
361 HCMD_NAME(PHY_CONFIGURATION_CMD),
362 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
363 HCMD_NAME(PHY_DB_CMD),
364 HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
365 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
366 HCMD_NAME(POWER_TABLE_CMD),
367 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
368 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
369 HCMD_NAME(DC2DC_CONFIG_CMD),
370 HCMD_NAME(NVM_ACCESS_CMD),
371 HCMD_NAME(BEACON_NOTIFICATION),
372 HCMD_NAME(BEACON_TEMPLATE_CMD),
373 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
374 HCMD_NAME(BT_CONFIG),
375 HCMD_NAME(STATISTICS_CMD),
376 HCMD_NAME(STATISTICS_NOTIFICATION),
377 HCMD_NAME(EOSP_NOTIFICATION),
378 HCMD_NAME(REDUCE_TX_POWER_CMD),
379 HCMD_NAME(CARD_STATE_NOTIFICATION),
380 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
381 HCMD_NAME(TDLS_CONFIG_CMD),
382 HCMD_NAME(MAC_PM_POWER_TABLE),
383 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
384 HCMD_NAME(MFUART_LOAD_NOTIFICATION),
385 HCMD_NAME(RSS_CONFIG_CMD),
386 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
387 HCMD_NAME(REPLY_RX_PHY_CMD),
388 HCMD_NAME(REPLY_RX_MPDU_CMD),
389 HCMD_NAME(FRAME_RELEASE),
391 HCMD_NAME(MCC_UPDATE_CMD),
392 HCMD_NAME(MCC_CHUB_UPDATE_CMD),
393 HCMD_NAME(MARKER_CMD),
394 HCMD_NAME(BT_PROFILE_NOTIFICATION),
395 HCMD_NAME(BCAST_FILTER_CMD),
396 HCMD_NAME(MCAST_FILTER_CMD),
397 HCMD_NAME(REPLY_SF_CFG_CMD),
398 HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
399 HCMD_NAME(D3_CONFIG_CMD),
400 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
401 HCMD_NAME(OFFLOADS_QUERY_CMD),
402 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
403 HCMD_NAME(MATCH_FOUND_NOTIFICATION),
404 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
405 HCMD_NAME(WOWLAN_PATTERNS),
406 HCMD_NAME(WOWLAN_CONFIGURATION),
407 HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
408 HCMD_NAME(WOWLAN_TKIP_PARAM),
409 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
410 HCMD_NAME(WOWLAN_GET_STATUSES),
411 HCMD_NAME(SCAN_ITERATION_COMPLETE),
412 HCMD_NAME(D0I3_END_CMD),
413 HCMD_NAME(LTR_CONFIG),
416 /* Please keep this array *SORTED* by hex value.
417 * Access is done through binary search
419 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
420 HCMD_NAME(SHARED_MEM_CFG_CMD),
421 HCMD_NAME(INIT_EXTENDED_CFG_CMD),
424 /* Please keep this array *SORTED* by hex value.
425 * Access is done through binary search
427 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
428 HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
431 /* Please keep this array *SORTED* by hex value.
432 * Access is done through binary search
434 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
435 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
436 HCMD_NAME(CTDP_CONFIG_CMD),
437 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
438 HCMD_NAME(GEO_TX_POWER_LIMIT),
439 HCMD_NAME(CT_KILL_NOTIFICATION),
440 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
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_data_path_names[] = {
447 HCMD_NAME(DQA_ENABLE_CMD),
448 HCMD_NAME(UPDATE_MU_GROUPS_CMD),
449 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
450 HCMD_NAME(STA_HE_CTXT_CMD),
451 HCMD_NAME(RFH_QUEUE_CONFIG_CMD),
452 HCMD_NAME(STA_PM_NOTIF),
453 HCMD_NAME(MU_GROUP_MGMT_NOTIF),
454 HCMD_NAME(RX_QUEUES_NOTIFICATION),
457 /* Please keep this array *SORTED* by hex value.
458 * Access is done through binary search
460 static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
461 HCMD_NAME(MFU_ASSERT_DUMP_NTF),
464 /* Please keep this array *SORTED* by hex value.
465 * Access is done through binary search
467 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
468 HCMD_NAME(STORED_BEACON_NTF),
471 /* Please keep this array *SORTED* by hex value.
472 * Access is done through binary search
474 static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
475 HCMD_NAME(NVM_ACCESS_COMPLETE),
476 HCMD_NAME(NVM_GET_INFO),
479 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
480 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
481 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
482 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
483 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
484 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
485 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
486 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
487 [REGULATORY_AND_NVM_GROUP] =
488 HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
491 /* this forward declaration can avoid to export the function */
492 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
494 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
497 static u32 iwl_mvm_min_backoff(struct iwl_mvm *mvm)
499 const struct iwl_pwr_tx_backoff *backoff = mvm->cfg->pwr_tx_backoffs;
505 dflt_pwr_limit = iwl_acpi_get_pwr_limit(mvm->dev);
507 while (backoff->pwr) {
508 if (dflt_pwr_limit >= backoff->pwr)
509 return backoff->backoff;
517 static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
519 struct iwl_mvm *mvm =
520 container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
521 struct ieee80211_vif *tx_blocked_vif;
522 struct iwl_mvm_vif *mvmvif;
524 mutex_lock(&mvm->mutex);
527 rcu_dereference_protected(mvm->csa_tx_blocked_vif,
528 lockdep_is_held(&mvm->mutex));
533 mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
534 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
535 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
537 mutex_unlock(&mvm->mutex);
540 static int iwl_mvm_fwrt_dump_start(void *ctx)
542 struct iwl_mvm *mvm = ctx;
545 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
549 mutex_lock(&mvm->mutex);
554 static void iwl_mvm_fwrt_dump_end(void *ctx)
556 struct iwl_mvm *mvm = ctx;
558 mutex_unlock(&mvm->mutex);
560 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
563 static bool iwl_mvm_fwrt_fw_running(void *ctx)
565 return iwl_mvm_firmware_running(ctx);
568 static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
569 .dump_start = iwl_mvm_fwrt_dump_start,
570 .dump_end = iwl_mvm_fwrt_dump_end,
571 .fw_running = iwl_mvm_fwrt_fw_running,
574 static struct iwl_op_mode *
575 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
576 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
578 struct ieee80211_hw *hw;
579 struct iwl_op_mode *op_mode;
581 struct iwl_trans_config trans_cfg = {};
582 static const u8 no_reclaim_cmds[] = {
587 enum iwl_amsdu_size rb_size_default;
590 * We use IWL_MVM_STATION_COUNT to check the validity of the station
591 * index all over the driver - check that its value corresponds to the
594 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
596 /********************************
597 * 1. Allocating and configuring HW data
598 ********************************/
599 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
600 sizeof(struct iwl_mvm),
605 if (cfg->max_rx_agg_size)
606 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
608 if (cfg->max_tx_agg_size)
609 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
613 mvm = IWL_OP_MODE_GET_MVM(op_mode);
614 mvm->dev = trans->dev;
620 iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm,
623 mvm->init_status = 0;
625 if (iwl_mvm_has_new_rx_api(mvm)) {
626 op_mode->ops = &iwl_mvm_ops_mq;
627 trans->rx_mpdu_cmd_hdr_size =
628 (trans->cfg->device_family >=
629 IWL_DEVICE_FAMILY_22560) ?
630 sizeof(struct iwl_rx_mpdu_desc) :
633 op_mode->ops = &iwl_mvm_ops;
634 trans->rx_mpdu_cmd_hdr_size =
635 sizeof(struct iwl_rx_mpdu_res_start);
637 if (WARN_ON(trans->num_rx_queues > 1))
641 mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
643 mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
644 mvm->snif_queue = IWL_MVM_DQA_INJECT_MONITOR_QUEUE;
645 mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
646 mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
648 mvm->sf_state = SF_UNINIT;
649 if (iwl_mvm_has_unified_ucode(mvm))
650 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
652 iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
653 mvm->drop_bcn_ap_mode = true;
655 mutex_init(&mvm->mutex);
656 mutex_init(&mvm->d0i3_suspend_mutex);
657 spin_lock_init(&mvm->async_handlers_lock);
658 INIT_LIST_HEAD(&mvm->time_event_list);
659 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
660 INIT_LIST_HEAD(&mvm->async_handlers_list);
661 spin_lock_init(&mvm->time_event_lock);
662 spin_lock_init(&mvm->queue_info_lock);
664 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
665 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
667 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
669 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
670 INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
671 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
673 spin_lock_init(&mvm->d0i3_tx_lock);
674 spin_lock_init(&mvm->refs_lock);
675 skb_queue_head_init(&mvm->d0i3_tx);
676 init_waitqueue_head(&mvm->d0i3_exit_waitq);
677 init_waitqueue_head(&mvm->rx_sync_waitq);
679 atomic_set(&mvm->queue_sync_counter, 0);
681 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
683 spin_lock_init(&mvm->tcm.lock);
684 INIT_DELAYED_WORK(&mvm->tcm.work, iwl_mvm_tcm_work);
685 mvm->tcm.ts = jiffies;
686 mvm->tcm.ll_ts = jiffies;
687 mvm->tcm.uapsd_nonagg_ts = jiffies;
689 INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
692 * Populate the state variables that the transport layer needs
695 trans_cfg.op_mode = op_mode;
696 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
697 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
699 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
700 rb_size_default = IWL_AMSDU_2K;
702 rb_size_default = IWL_AMSDU_4K;
704 switch (iwlwifi_mod_params.amsdu_size) {
706 trans_cfg.rx_buf_size = rb_size_default;
709 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
712 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
715 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
718 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
719 iwlwifi_mod_params.amsdu_size);
720 trans_cfg.rx_buf_size = rb_size_default;
723 trans->wide_cmd_header = true;
724 trans_cfg.bc_table_dword =
725 mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560;
727 trans_cfg.command_groups = iwl_mvm_groups;
728 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
730 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
731 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
732 trans_cfg.scd_set_active = true;
734 trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
737 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
739 /* Set a short watchdog for the command queue */
740 trans_cfg.cmd_q_wdg_timeout =
741 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
743 snprintf(mvm->hw->wiphy->fw_version,
744 sizeof(mvm->hw->wiphy->fw_version),
745 "%s", fw->fw_version);
747 /* Configure transport layer */
748 iwl_trans_configure(mvm->trans, &trans_cfg);
750 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
751 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
752 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
753 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
754 sizeof(trans->dbg_conf_tlv));
755 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
756 trans->dbg_dump_mask = mvm->fw->dbg_dump_mask;
758 trans->iml = mvm->fw->iml;
759 trans->iml_len = mvm->fw->iml_len;
761 /* set up notification wait support */
762 iwl_notification_wait_init(&mvm->notif_wait);
765 mvm->phy_db = iwl_phy_db_init(trans);
767 IWL_ERR(mvm, "Cannot init phy_db\n");
771 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
772 mvm->cfg->name, mvm->trans->hw_rev);
774 if (iwlwifi_mod_params.nvm_file)
775 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
777 IWL_DEBUG_EEPROM(mvm->trans->dev,
778 "working without external nvm file\n");
780 err = iwl_trans_start_hw(mvm->trans);
784 mutex_lock(&mvm->mutex);
785 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
786 err = iwl_run_init_mvm_ucode(mvm, true);
787 if (!iwlmvm_mod_params.init_dbg || !err)
788 iwl_mvm_stop_device(mvm);
789 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
790 mutex_unlock(&mvm->mutex);
792 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
796 scan_size = iwl_mvm_scan_size(mvm);
798 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
802 /* Set EBS as successful as long as not stated otherwise by the FW. */
803 mvm->last_ebs_successful = true;
805 err = iwl_mvm_mac_setup_register(mvm);
808 mvm->hw_registered = true;
810 min_backoff = iwl_mvm_min_backoff(mvm);
811 iwl_mvm_thermal_initialize(mvm, min_backoff);
813 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
817 if (!iwl_mvm_has_new_rx_stats_api(mvm))
818 memset(&mvm->rx_stats_v3, 0,
819 sizeof(struct mvm_statistics_rx_v3));
821 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
823 /* The transport always starts with a taken reference, we can
824 * release it now if d0i3 is supported */
825 if (iwl_mvm_is_d0i3_supported(mvm))
826 iwl_trans_unref(mvm->trans);
828 iwl_mvm_tof_init(mvm);
833 if (iwlmvm_mod_params.init_dbg)
836 ieee80211_unregister_hw(mvm->hw);
837 mvm->hw_registered = false;
838 iwl_mvm_leds_exit(mvm);
839 iwl_mvm_thermal_exit(mvm);
841 iwl_fw_flush_dump(&mvm->fwrt);
843 if (iwlmvm_mod_params.init_dbg)
845 iwl_phy_db_free(mvm->phy_db);
846 kfree(mvm->scan_cmd);
847 iwl_trans_op_mode_leave(trans);
849 ieee80211_free_hw(mvm->hw);
853 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
855 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
858 /* If d0i3 is supported, we have released the reference that
859 * the transport started with, so we should take it back now
860 * that we are leaving.
862 if (iwl_mvm_is_d0i3_supported(mvm))
863 iwl_trans_ref(mvm->trans);
865 iwl_mvm_leds_exit(mvm);
867 iwl_mvm_thermal_exit(mvm);
869 if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
870 ieee80211_unregister_hw(mvm->hw);
871 mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
874 kfree(mvm->scan_cmd);
875 kfree(mvm->mcast_filter_cmd);
876 mvm->mcast_filter_cmd = NULL;
878 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
879 kfree(mvm->d3_resume_sram);
881 iwl_trans_op_mode_leave(mvm->trans);
883 iwl_phy_db_free(mvm->phy_db);
886 kfree(mvm->nvm_data);
887 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
888 kfree(mvm->nvm_sections[i].data);
890 cancel_delayed_work_sync(&mvm->tcm.work);
892 iwl_mvm_tof_clean(mvm);
894 mutex_destroy(&mvm->mutex);
895 mutex_destroy(&mvm->d0i3_suspend_mutex);
897 ieee80211_free_hw(mvm->hw);
900 struct iwl_async_handler_entry {
901 struct list_head list;
902 struct iwl_rx_cmd_buffer rxb;
903 enum iwl_rx_handler_context context;
904 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
907 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
909 struct iwl_async_handler_entry *entry, *tmp;
911 spin_lock_bh(&mvm->async_handlers_lock);
912 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
913 iwl_free_rxb(&entry->rxb);
914 list_del(&entry->list);
917 spin_unlock_bh(&mvm->async_handlers_lock);
920 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
922 struct iwl_mvm *mvm =
923 container_of(wk, struct iwl_mvm, async_handlers_wk);
924 struct iwl_async_handler_entry *entry, *tmp;
925 LIST_HEAD(local_list);
927 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
930 * Sync with Rx path with a lock. Remove all the entries from this list,
931 * add them to a local one (lock free), and then handle them.
933 spin_lock_bh(&mvm->async_handlers_lock);
934 list_splice_init(&mvm->async_handlers_list, &local_list);
935 spin_unlock_bh(&mvm->async_handlers_lock);
937 list_for_each_entry_safe(entry, tmp, &local_list, list) {
938 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
939 mutex_lock(&mvm->mutex);
940 entry->fn(mvm, &entry->rxb);
941 iwl_free_rxb(&entry->rxb);
942 list_del(&entry->list);
943 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
944 mutex_unlock(&mvm->mutex);
949 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
950 struct iwl_rx_packet *pkt)
952 struct iwl_fw_dbg_trigger_tlv *trig;
953 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
956 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
959 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
960 cmds_trig = (void *)trig->data;
962 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
965 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
966 /* don't collect on CMD 0 */
967 if (!cmds_trig->cmds[i].cmd_id)
970 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
971 cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
974 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
975 "CMD 0x%02x.%02x received",
976 pkt->hdr.group_id, pkt->hdr.cmd);
981 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
982 struct iwl_rx_cmd_buffer *rxb,
983 struct iwl_rx_packet *pkt)
987 iwl_mvm_rx_check_trigger(mvm, pkt);
990 * Do the notification wait before RX handlers so
991 * even if the RX handler consumes the RXB we have
992 * access to it in the notification wait entry.
994 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
996 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
997 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
998 struct iwl_async_handler_entry *entry;
1000 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
1003 if (rx_h->context == RX_HANDLER_SYNC) {
1008 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1009 /* we can't do much... */
1013 entry->rxb._page = rxb_steal_page(rxb);
1014 entry->rxb._offset = rxb->_offset;
1015 entry->rxb._rx_page_order = rxb->_rx_page_order;
1016 entry->fn = rx_h->fn;
1017 entry->context = rx_h->context;
1018 spin_lock(&mvm->async_handlers_lock);
1019 list_add_tail(&entry->list, &mvm->async_handlers_list);
1020 spin_unlock(&mvm->async_handlers_lock);
1021 schedule_work(&mvm->async_handlers_wk);
1026 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
1027 struct napi_struct *napi,
1028 struct iwl_rx_cmd_buffer *rxb)
1030 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1031 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1032 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1034 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1035 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1036 else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
1037 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
1039 iwl_mvm_rx_common(mvm, rxb, pkt);
1042 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
1043 struct napi_struct *napi,
1044 struct iwl_rx_cmd_buffer *rxb)
1046 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1047 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1048 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1050 if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1051 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
1052 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1053 RX_QUEUES_NOTIFICATION)))
1054 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
1055 else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
1056 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
1058 iwl_mvm_rx_common(mvm, rxb, pkt);
1061 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1065 if (WARN_ON_ONCE(!mq))
1068 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1069 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
1070 IWL_DEBUG_TX_QUEUES(mvm,
1071 "mac80211 %d already stopped\n", q);
1075 ieee80211_stop_queue(mvm->hw, q);
1079 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
1080 const struct iwl_device_cmd *cmd)
1082 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1085 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
1086 * commands that need to block the Tx queues.
1088 iwl_trans_block_txq_ptrs(mvm->trans, false);
1091 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1093 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1096 spin_lock_bh(&mvm->queue_info_lock);
1097 mq = mvm->hw_queue_to_mac80211[hw_queue];
1098 spin_unlock_bh(&mvm->queue_info_lock);
1100 iwl_mvm_stop_mac_queues(mvm, mq);
1103 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1107 if (WARN_ON_ONCE(!mq))
1110 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1111 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1112 IWL_DEBUG_TX_QUEUES(mvm,
1113 "mac80211 %d still stopped\n", q);
1117 ieee80211_wake_queue(mvm->hw, q);
1121 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1123 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1126 spin_lock_bh(&mvm->queue_info_lock);
1127 mq = mvm->hw_queue_to_mac80211[hw_queue];
1128 spin_unlock_bh(&mvm->queue_info_lock);
1130 iwl_mvm_start_mac_queues(mvm, mq);
1133 static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
1135 bool state = iwl_mvm_is_radio_killed(mvm);
1138 wake_up(&mvm->rx_sync_waitq);
1140 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
1143 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1146 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1148 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1150 iwl_mvm_set_rfkill_state(mvm);
1153 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1155 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1156 bool calibrating = READ_ONCE(mvm->calibrating);
1159 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1161 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1163 iwl_mvm_set_rfkill_state(mvm);
1165 /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1167 iwl_abort_notification_waits(&mvm->notif_wait);
1170 * Stop the device if we run OPERATIONAL firmware or if we are in the
1171 * middle of the calibrations.
1173 return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
1176 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1178 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1179 struct ieee80211_tx_info *info;
1181 info = IEEE80211_SKB_CB(skb);
1182 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1183 ieee80211_free_txskb(mvm->hw, skb);
1186 struct iwl_mvm_reprobe {
1188 struct work_struct work;
1191 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1193 struct iwl_mvm_reprobe *reprobe;
1195 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1196 if (device_reprobe(reprobe->dev))
1197 dev_err(reprobe->dev, "reprobe failed!\n");
1199 module_put(THIS_MODULE);
1202 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1204 iwl_abort_notification_waits(&mvm->notif_wait);
1207 * This is a bit racy, but worst case we tell mac80211 about
1208 * a stopped/aborted scan when that was already done which
1209 * is not a problem. It is necessary to abort any os scan
1210 * here because mac80211 requires having the scan cleared
1211 * before restarting.
1212 * We'll reset the scan_status to NONE in restart cleanup in
1213 * the next start() call from mac80211. If restart isn't called
1214 * (no fw restart) scan status will stay busy.
1216 iwl_mvm_report_scan_aborted(mvm);
1219 * If we're restarting already, don't cycle restarts.
1220 * If INIT fw asserted, it will likely fail again.
1221 * If WoWLAN fw asserted, don't restart either, mac80211
1222 * can't recover this since we're already half suspended.
1224 if (!mvm->fw_restart && fw_error) {
1225 iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
1227 } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1228 struct iwl_mvm_reprobe *reprobe;
1231 "Firmware error during reconfiguration - reprobe!\n");
1234 * get a module reference to avoid doing this while unloading
1235 * anyway and to avoid scheduling a work with code that's
1238 if (!try_module_get(THIS_MODULE)) {
1239 IWL_ERR(mvm, "Module is being unloaded - abort\n");
1243 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1245 module_put(THIS_MODULE);
1248 reprobe->dev = mvm->trans->dev;
1249 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1250 schedule_work(&reprobe->work);
1251 } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
1252 mvm->hw_registered &&
1253 !test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1254 /* don't let the transport/FW power down */
1255 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1257 if (fw_error && mvm->fw_restart > 0)
1259 set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1260 ieee80211_restart_hw(mvm->hw);
1264 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1266 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1268 if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status))
1269 iwl_mvm_dump_nic_error_log(mvm);
1271 iwl_mvm_nic_restart(mvm, true);
1274 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1276 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1279 iwl_mvm_nic_restart(mvm, true);
1283 struct iwl_d0i3_iter_data {
1284 struct iwl_mvm *mvm;
1285 struct ieee80211_vif *connected_vif;
1289 bool disable_offloading;
1292 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1293 struct ieee80211_vif *vif,
1294 struct iwl_d0i3_iter_data *iter_data)
1296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1297 struct iwl_mvm_sta *mvmsta;
1298 u32 available_tids = 0;
1301 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1302 mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
1305 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1309 spin_lock_bh(&mvmsta->lock);
1310 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1311 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1314 * in case of pending tx packets, don't use this tid
1315 * for offloading in order to prevent reuse of the same
1318 if (iwl_mvm_tid_queued(mvm, tid_data))
1321 if (tid_data->state != IWL_AGG_OFF)
1324 available_tids |= BIT(tid);
1326 spin_unlock_bh(&mvmsta->lock);
1329 * disallow protocol offloading if we have no available tid
1330 * (with no pending frames and no active aggregation,
1331 * as we don't handle "holes" properly - the scheduler needs the
1332 * frame's seq number and TFD index to match)
1334 if (!available_tids)
1337 /* for simplicity, just use the first available tid */
1338 iter_data->offloading_tid = ffs(available_tids) - 1;
1342 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1343 struct ieee80211_vif *vif)
1345 struct iwl_d0i3_iter_data *data = _data;
1346 struct iwl_mvm *mvm = data->mvm;
1347 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1348 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1350 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1351 if (vif->type != NL80211_IFTYPE_STATION ||
1352 !vif->bss_conf.assoc)
1356 * in case of pending tx packets or active aggregations,
1357 * avoid offloading features in order to prevent reuse of
1358 * the same qos seq counters.
1360 if (iwl_mvm_disallow_offloading(mvm, vif, data))
1361 data->disable_offloading = true;
1363 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1364 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1368 * on init/association, mvm already configures POWER_TABLE_CMD
1369 * and REPLY_MCAST_FILTER_CMD, so currently don't
1370 * reconfigure them (we might want to use different
1371 * params later on, though).
1373 data->ap_sta_id = mvmvif->ap_sta_id;
1377 * no new commands can be sent at this stage, so it's safe
1378 * to save the vif pointer during d0i3 entrance.
1380 data->connected_vif = vif;
1383 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1384 struct iwl_wowlan_config_cmd *cmd,
1385 struct iwl_d0i3_iter_data *iter_data)
1387 struct ieee80211_sta *ap_sta;
1388 struct iwl_mvm_sta *mvm_ap_sta;
1390 if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
1395 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1396 if (IS_ERR_OR_NULL(ap_sta))
1399 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1400 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1401 cmd->offloading_tid = iter_data->offloading_tid;
1402 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1403 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1405 * The d0i3 uCode takes care of the nonqos counters,
1406 * so configure only the qos seq ones.
1408 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1413 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1415 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1416 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1418 struct iwl_d0i3_iter_data d0i3_iter_data = {
1421 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1422 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1423 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1424 IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1426 struct iwl_d3_manager_config d3_cfg_cmd = {
1427 .min_sleep_time = cpu_to_le32(1000),
1428 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1431 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1433 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1436 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1439 * iwl_mvm_ref_sync takes a reference before checking the flag.
1440 * so by checking there is no held reference we prevent a state
1441 * in which iwl_mvm_ref_sync continues successfully while we
1442 * configure the firmware to enter d0i3
1444 if (iwl_mvm_ref_taken(mvm)) {
1445 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1446 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1447 wake_up(&mvm->d0i3_exit_waitq);
1451 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1452 IEEE80211_IFACE_ITER_NORMAL,
1453 iwl_mvm_enter_d0i3_iterator,
1455 if (d0i3_iter_data.vif_count == 1) {
1456 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1457 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1459 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1460 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1461 mvm->d0i3_offloading = false;
1464 iwl_mvm_pause_tcm(mvm, true);
1465 /* make sure we have no running tx while configuring the seqno */
1468 /* Flush the hw queues, in case something got queued during entry */
1469 /* TODO new tx api */
1470 if (iwl_mvm_has_new_tx_api(mvm)) {
1471 WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
1473 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
1479 /* configure wowlan configuration only if needed */
1480 if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
1481 /* wake on beacons only if beacon storing isn't supported */
1482 if (!fw_has_capa(&mvm->fw->ucode_capa,
1483 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1484 wowlan_config_cmd.wakeup_filter |=
1485 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1487 iwl_mvm_wowlan_config_key_params(mvm,
1488 d0i3_iter_data.connected_vif,
1491 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1494 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1495 sizeof(wowlan_config_cmd),
1496 &wowlan_config_cmd);
1501 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1502 flags | CMD_MAKE_TRANS_IDLE,
1503 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1506 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1507 struct ieee80211_vif *vif)
1509 struct iwl_mvm *mvm = _data;
1510 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1512 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1513 if (vif->type != NL80211_IFTYPE_STATION ||
1514 !vif->bss_conf.assoc)
1517 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1520 struct iwl_mvm_d0i3_exit_work_iter_data {
1521 struct iwl_mvm *mvm;
1522 struct iwl_wowlan_status *status;
1526 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1527 struct ieee80211_vif *vif)
1529 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1530 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1531 u32 reasons = data->wakeup_reasons;
1533 /* consider only the relevant station interface */
1534 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1535 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1538 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1539 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1540 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1541 ieee80211_beacon_loss(vif);
1543 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1546 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1548 struct ieee80211_sta *sta = NULL;
1549 struct iwl_mvm_sta *mvm_ap_sta;
1551 bool wake_queues = false;
1553 lockdep_assert_held(&mvm->mutex);
1555 spin_lock_bh(&mvm->d0i3_tx_lock);
1557 if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
1560 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1562 /* get the sta in order to update seq numbers and re-enqueue skbs */
1563 sta = rcu_dereference_protected(
1564 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1565 lockdep_is_held(&mvm->mutex));
1567 if (IS_ERR_OR_NULL(sta)) {
1572 if (mvm->d0i3_offloading && qos_seq) {
1573 /* update qos seq numbers if offloading was enabled */
1574 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1575 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1576 u16 seq = le16_to_cpu(qos_seq[i]);
1577 /* firmware stores last-used one, we store next one */
1579 mvm_ap_sta->tid_data[i].seq_number = seq;
1583 /* re-enqueue (or drop) all packets */
1584 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1585 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1587 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1588 ieee80211_free_txskb(mvm->hw, skb);
1590 /* if the skb_queue is not empty, we need to wake queues */
1593 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1594 wake_up(&mvm->d0i3_exit_waitq);
1595 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1597 ieee80211_wake_queues(mvm->hw);
1599 spin_unlock_bh(&mvm->d0i3_tx_lock);
1602 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1604 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1605 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1609 struct iwl_wowlan_status *status;
1610 u32 wakeup_reasons = 0;
1611 __le16 *qos_seq = NULL;
1613 mutex_lock(&mvm->mutex);
1615 status = iwl_mvm_send_wowlan_get_status(mvm);
1616 if (IS_ERR_OR_NULL(status)) {
1617 /* set to NULL so we don't need to check before kfree'ing */
1622 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1623 qos_seq = status->qos_seq_ctr;
1625 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1627 iter_data.wakeup_reasons = wakeup_reasons;
1628 iter_data.status = status;
1629 ieee80211_iterate_active_interfaces(mvm->hw,
1630 IEEE80211_IFACE_ITER_NORMAL,
1631 iwl_mvm_d0i3_exit_work_iter,
1634 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1636 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1639 /* qos_seq might point inside resp_pkt, so free it only now */
1642 /* the FW might have updated the regdomain */
1643 iwl_mvm_update_changed_regdom(mvm);
1645 iwl_mvm_resume_tcm(mvm);
1646 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1647 mutex_unlock(&mvm->mutex);
1650 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1652 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1656 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1658 if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
1661 mutex_lock(&mvm->d0i3_suspend_mutex);
1662 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1663 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1664 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1665 mutex_unlock(&mvm->d0i3_suspend_mutex);
1668 mutex_unlock(&mvm->d0i3_suspend_mutex);
1670 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1674 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1675 IEEE80211_IFACE_ITER_NORMAL,
1676 iwl_mvm_exit_d0i3_iterator,
1679 schedule_work(&mvm->d0i3_exit_work);
1683 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1685 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1687 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1688 return _iwl_mvm_exit_d0i3(mvm);
1691 #define IWL_MVM_D0I3_OPS \
1692 .enter_d0i3 = iwl_mvm_enter_d0i3, \
1693 .exit_d0i3 = iwl_mvm_exit_d0i3,
1694 #else /* CONFIG_PM */
1695 #define IWL_MVM_D0I3_OPS
1696 #endif /* CONFIG_PM */
1698 #define IWL_MVM_COMMON_OPS \
1699 /* these could be differentiated */ \
1700 .async_cb = iwl_mvm_async_cb, \
1701 .queue_full = iwl_mvm_stop_sw_queue, \
1702 .queue_not_full = iwl_mvm_wake_sw_queue, \
1703 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
1704 .free_skb = iwl_mvm_free_skb, \
1705 .nic_error = iwl_mvm_nic_error, \
1706 .cmd_queue_full = iwl_mvm_cmd_queue_full, \
1707 .nic_config = iwl_mvm_nic_config, \
1709 /* as we only register one, these MUST be common! */ \
1710 .start = iwl_op_mode_mvm_start, \
1711 .stop = iwl_op_mode_mvm_stop
1713 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1718 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1719 struct napi_struct *napi,
1720 struct iwl_rx_cmd_buffer *rxb,
1723 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1724 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1725 u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
1727 if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
1728 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1729 else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
1730 RX_QUEUES_NOTIFICATION)))
1731 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1732 else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
1733 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1736 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1738 .rx = iwl_mvm_rx_mq,
1739 .rx_rss = iwl_mvm_rx_mq_rss,