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 - 2014 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 <ilw@linux.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 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
65 #include <linux/module.h>
66 #include <linux/vmalloc.h>
67 #include <net/mac80211.h>
69 #include "iwl-notif-wait.h"
70 #include "iwl-trans.h"
71 #include "iwl-op-mode.h"
73 #include "iwl-debug.h"
75 #include "iwl-modparams.h"
77 #include "iwl-phy-db.h"
78 #include "iwl-eeprom-parse.h"
83 #include "fw-api-scan.h"
84 #include "time-event.h"
85 #include "iwl-fw-error-dump.h"
87 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
88 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
89 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
90 MODULE_LICENSE("GPL");
92 static const struct iwl_op_mode_ops iwl_mvm_ops
;
94 struct iwl_mvm_mod_params iwlmvm_mod_params
= {
95 .power_scheme
= IWL_POWER_SCHEME_BPS
,
96 .tfd_q_hang_detect
= true
97 /* rest of fields are 0 by default */
100 module_param_named(init_dbg
, iwlmvm_mod_params
.init_dbg
, bool, S_IRUGO
);
101 MODULE_PARM_DESC(init_dbg
,
102 "set to true to debug an ASSERT in INIT fw (default: false");
103 module_param_named(power_scheme
, iwlmvm_mod_params
.power_scheme
, int, S_IRUGO
);
104 MODULE_PARM_DESC(power_scheme
,
105 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
106 module_param_named(tfd_q_hang_detect
, iwlmvm_mod_params
.tfd_q_hang_detect
,
108 MODULE_PARM_DESC(tfd_q_hang_detect
,
109 "TFD queues hang detection (default: true");
112 * module init and exit functions
114 static int __init
iwl_mvm_init(void)
118 ret
= iwl_mvm_rate_control_register();
120 pr_err("Unable to register rate control algorithm: %d\n", ret
);
124 ret
= iwl_opmode_register("iwlmvm", &iwl_mvm_ops
);
127 pr_err("Unable to register MVM op_mode: %d\n", ret
);
128 iwl_mvm_rate_control_unregister();
133 module_init(iwl_mvm_init
);
135 static void __exit
iwl_mvm_exit(void)
137 iwl_opmode_deregister("iwlmvm");
138 iwl_mvm_rate_control_unregister();
140 module_exit(iwl_mvm_exit
);
142 static void iwl_mvm_nic_config(struct iwl_op_mode
*op_mode
)
144 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
145 u8 radio_cfg_type
, radio_cfg_step
, radio_cfg_dash
;
147 u32 phy_config
= iwl_mvm_get_phy_config(mvm
);
149 radio_cfg_type
= (phy_config
& FW_PHY_CFG_RADIO_TYPE
) >>
150 FW_PHY_CFG_RADIO_TYPE_POS
;
151 radio_cfg_step
= (phy_config
& FW_PHY_CFG_RADIO_STEP
) >>
152 FW_PHY_CFG_RADIO_STEP_POS
;
153 radio_cfg_dash
= (phy_config
& FW_PHY_CFG_RADIO_DASH
) >>
154 FW_PHY_CFG_RADIO_DASH_POS
;
157 reg_val
|= CSR_HW_REV_STEP(mvm
->trans
->hw_rev
) <<
158 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP
;
159 reg_val
|= CSR_HW_REV_DASH(mvm
->trans
->hw_rev
) <<
160 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH
;
162 /* radio configuration */
163 reg_val
|= radio_cfg_type
<< CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE
;
164 reg_val
|= radio_cfg_step
<< CSR_HW_IF_CONFIG_REG_POS_PHY_STEP
;
165 reg_val
|= radio_cfg_dash
<< CSR_HW_IF_CONFIG_REG_POS_PHY_DASH
;
167 WARN_ON((radio_cfg_type
<< CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE
) &
168 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE
);
171 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
172 * shouldn't be set to any non-zero value. The same is supposed to be
173 * true of the other HW, but unsetting them (such as the 7260) causes
174 * automatic tests to fail on seemingly unrelated errors. Need to
175 * further investigate this, but for now 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 iwl_trans_set_bits_mask(mvm
->trans
, CSR_HW_IF_CONFIG_REG
,
181 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH
|
182 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP
|
183 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE
|
184 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP
|
185 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH
|
186 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI
|
187 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI
,
190 IWL_DEBUG_INFO(mvm
, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type
,
191 radio_cfg_step
, radio_cfg_dash
);
194 * W/A : NIC is stuck in a reset state after Early PCIe power off
195 * (PCIe power is lost before PERST# is asserted), causing ME FW
196 * to lose ownership and not being able to obtain it back.
198 if (mvm
->trans
->cfg
->device_family
!= IWL_DEVICE_FAMILY_8000
)
199 iwl_set_bits_mask_prph(mvm
->trans
, APMG_PS_CTRL_REG
,
200 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS
,
201 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS
);
204 struct iwl_rx_handlers
{
207 int (*fn
)(struct iwl_mvm
*mvm
, struct iwl_rx_cmd_buffer
*rxb
,
208 struct iwl_device_cmd
*cmd
);
211 #define RX_HANDLER(_cmd_id, _fn, _async) \
212 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
215 * Handlers for fw notifications
216 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
217 * This list should be in order of frequency for performance purposes.
219 * The handler can be SYNC - this means that it will be called in the Rx path
220 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
221 * only in this case!), it should be set as ASYNC. In that case, it will be
222 * called from a worker with mvm->mutex held.
224 static const struct iwl_rx_handlers iwl_mvm_rx_handlers
[] = {
225 RX_HANDLER(REPLY_RX_MPDU_CMD
, iwl_mvm_rx_rx_mpdu
, false),
226 RX_HANDLER(REPLY_RX_PHY_CMD
, iwl_mvm_rx_rx_phy_cmd
, false),
227 RX_HANDLER(TX_CMD
, iwl_mvm_rx_tx_cmd
, false),
228 RX_HANDLER(BA_NOTIF
, iwl_mvm_rx_ba_notif
, false),
230 RX_HANDLER(BT_PROFILE_NOTIFICATION
, iwl_mvm_rx_bt_coex_notif
, true),
231 RX_HANDLER(BEACON_NOTIFICATION
, iwl_mvm_rx_beacon_notif
, true),
232 RX_HANDLER(STATISTICS_NOTIFICATION
, iwl_mvm_rx_statistics
, true),
233 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION
,
234 iwl_mvm_rx_ant_coupling_notif
, true),
236 RX_HANDLER(TIME_EVENT_NOTIFICATION
, iwl_mvm_rx_time_event_notif
, false),
238 RX_HANDLER(EOSP_NOTIFICATION
, iwl_mvm_rx_eosp_notif
, false),
240 RX_HANDLER(SCAN_ITERATION_COMPLETE
,
241 iwl_mvm_rx_scan_offload_iter_complete_notif
, false),
242 RX_HANDLER(SCAN_OFFLOAD_COMPLETE
,
243 iwl_mvm_rx_scan_offload_complete_notif
, true),
244 RX_HANDLER(MATCH_FOUND_NOTIFICATION
, iwl_mvm_rx_scan_offload_results
,
246 RX_HANDLER(SCAN_COMPLETE_UMAC
, iwl_mvm_rx_umac_scan_complete_notif
,
249 RX_HANDLER(RADIO_VERSION_NOTIFICATION
, iwl_mvm_rx_radio_ver
, false),
250 RX_HANDLER(CARD_STATE_NOTIFICATION
, iwl_mvm_rx_card_state_notif
, false),
252 RX_HANDLER(MISSED_BEACONS_NOTIFICATION
, iwl_mvm_rx_missed_beacons_notif
,
255 RX_HANDLER(REPLY_ERROR
, iwl_mvm_rx_fw_error
, false),
256 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION
,
257 iwl_mvm_power_uapsd_misbehaving_ap_notif
, false),
258 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION
, iwl_mvm_temp_notif
, true),
260 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION
, iwl_mvm_rx_tdls_notif
,
262 RX_HANDLER(MFUART_LOAD_NOTIFICATION
, iwl_mvm_rx_mfuart_notif
, false),
266 #define CMD(x) [x] = #x
268 static const char *const iwl_mvm_cmd_strings
[REPLY_MAX
] = {
271 CMD(INIT_COMPLETE_NOTIF
),
272 CMD(PHY_CONTEXT_CMD
),
277 CMD(MAC_CONTEXT_CMD
),
279 CMD(TIME_EVENT_NOTIFICATION
),
280 CMD(BINDING_CONTEXT_CMD
),
282 CMD(NON_QOS_TX_COUNTER_CMD
),
283 CMD(RADIO_VERSION_NOTIFICATION
),
284 CMD(SCAN_REQUEST_CMD
),
286 CMD(SCAN_START_NOTIFICATION
),
287 CMD(SCAN_RESULTS_NOTIFICATION
),
288 CMD(SCAN_COMPLETE_NOTIFICATION
),
290 CMD(PHY_CONFIGURATION_CMD
),
291 CMD(CALIB_RES_NOTIF_PHY_DB
),
292 CMD(SET_CALIB_DEFAULT_CMD
),
293 CMD(CALIBRATION_COMPLETE_NOTIFICATION
),
298 CMD(SCAN_OFFLOAD_CONFIG_CMD
),
299 CMD(MATCH_FOUND_NOTIFICATION
),
300 CMD(SCAN_OFFLOAD_REQUEST_CMD
),
301 CMD(SCAN_OFFLOAD_ABORT_CMD
),
303 CMD(SCAN_OFFLOAD_COMPLETE
),
304 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD
),
305 CMD(SCAN_ITERATION_COMPLETE
),
306 CMD(POWER_TABLE_CMD
),
308 CMD(REPLY_RX_PHY_CMD
),
309 CMD(REPLY_RX_MPDU_CMD
),
310 CMD(BEACON_NOTIFICATION
),
311 CMD(BEACON_TEMPLATE_CMD
),
313 CMD(STATISTICS_NOTIFICATION
),
314 CMD(EOSP_NOTIFICATION
),
315 CMD(REDUCE_TX_POWER_CMD
),
316 CMD(TX_ANT_CONFIGURATION_CMD
),
319 CMD(PROT_OFFLOAD_CONFIG_CMD
),
320 CMD(OFFLOADS_QUERY_CMD
),
321 CMD(REMOTE_WAKE_CONFIG_CMD
),
322 CMD(WOWLAN_PATTERNS
),
323 CMD(WOWLAN_CONFIGURATION
),
324 CMD(WOWLAN_TSC_RSC_PARAM
),
325 CMD(WOWLAN_TKIP_PARAM
),
326 CMD(WOWLAN_KEK_KCK_MATERIAL
),
327 CMD(WOWLAN_GET_STATUSES
),
328 CMD(WOWLAN_TX_POWER_PER_DB
),
329 CMD(SCAN_OFFLOAD_PROFILES_QUERY_CMD
),
330 CMD(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD
),
331 CMD(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD
),
332 CMD(CARD_STATE_NOTIFICATION
),
333 CMD(MISSED_BEACONS_NOTIFICATION
),
334 CMD(BT_COEX_PRIO_TABLE
),
335 CMD(BT_COEX_PROT_ENV
),
336 CMD(BT_PROFILE_NOTIFICATION
),
338 CMD(MCAST_FILTER_CMD
),
339 CMD(BCAST_FILTER_CMD
),
340 CMD(REPLY_SF_CFG_CMD
),
341 CMD(REPLY_BEACON_FILTERING_CMD
),
342 CMD(CMD_DTS_MEASUREMENT_TRIGGER
),
343 CMD(DTS_MEASUREMENT_NOTIFICATION
),
344 CMD(REPLY_THERMAL_MNG_BACKOFF
),
345 CMD(MAC_PM_POWER_TABLE
),
348 CMD(BT_COEX_UPDATE_SW_BOOST
),
349 CMD(BT_COEX_UPDATE_CORUN_LUT
),
350 CMD(BT_COEX_UPDATE_REDUCED_TXP
),
351 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION
),
352 CMD(ANTENNA_COUPLING_NOTIFICATION
),
356 CMD(SCAN_ABORT_UMAC
),
357 CMD(SCAN_COMPLETE_UMAC
),
358 CMD(TDLS_CHANNEL_SWITCH_CMD
),
359 CMD(TDLS_CHANNEL_SWITCH_NOTIFICATION
),
360 CMD(TDLS_CONFIG_CMD
),
364 /* this forward declaration can avoid to export the function */
365 static void iwl_mvm_async_handlers_wk(struct work_struct
*wk
);
366 static void iwl_mvm_d0i3_exit_work(struct work_struct
*wk
);
368 static u32
calc_min_backoff(struct iwl_trans
*trans
, const struct iwl_cfg
*cfg
)
370 const struct iwl_pwr_tx_backoff
*pwr_tx_backoff
= cfg
->pwr_tx_backoffs
;
375 while (pwr_tx_backoff
->pwr
) {
376 if (trans
->dflt_pwr_limit
>= pwr_tx_backoff
->pwr
)
377 return pwr_tx_backoff
->backoff
;
385 static void iwl_mvm_fw_error_dump_wk(struct work_struct
*work
);
387 static struct iwl_op_mode
*
388 iwl_op_mode_mvm_start(struct iwl_trans
*trans
, const struct iwl_cfg
*cfg
,
389 const struct iwl_fw
*fw
, struct dentry
*dbgfs_dir
)
391 struct ieee80211_hw
*hw
;
392 struct iwl_op_mode
*op_mode
;
394 struct iwl_trans_config trans_cfg
= {};
395 static const u8 no_reclaim_cmds
[] = {
402 * We use IWL_MVM_STATION_COUNT to check the validity of the station
403 * index all over the driver - check that its value corresponds to the
406 BUILD_BUG_ON(ARRAY_SIZE(mvm
->fw_id_to_mac_id
) != IWL_MVM_STATION_COUNT
);
408 /********************************
409 * 1. Allocating and configuring HW data
410 ********************************/
411 hw
= ieee80211_alloc_hw(sizeof(struct iwl_op_mode
) +
412 sizeof(struct iwl_mvm
),
417 if (cfg
->max_rx_agg_size
)
418 hw
->max_rx_aggregation_subframes
= cfg
->max_rx_agg_size
;
420 if (cfg
->max_tx_agg_size
)
421 hw
->max_tx_aggregation_subframes
= cfg
->max_tx_agg_size
;
424 op_mode
->ops
= &iwl_mvm_ops
;
426 mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
427 mvm
->dev
= trans
->dev
;
433 mvm
->restart_fw
= iwlwifi_mod_params
.restart_fw
? -1 : 0;
436 mvm
->first_agg_queue
= 16;
437 mvm
->last_agg_queue
= mvm
->cfg
->base_params
->num_of_queues
- 1;
438 if (mvm
->cfg
->base_params
->num_of_queues
== 16) {
440 mvm
->first_agg_queue
= 12;
442 mvm
->sf_state
= SF_UNINIT
;
443 mvm
->low_latency_agg_frame_limit
= 6;
444 mvm
->cur_ucode
= IWL_UCODE_INIT
;
446 mutex_init(&mvm
->mutex
);
447 mutex_init(&mvm
->d0i3_suspend_mutex
);
448 spin_lock_init(&mvm
->async_handlers_lock
);
449 INIT_LIST_HEAD(&mvm
->time_event_list
);
450 INIT_LIST_HEAD(&mvm
->aux_roc_te_list
);
451 INIT_LIST_HEAD(&mvm
->async_handlers_list
);
452 spin_lock_init(&mvm
->time_event_lock
);
454 INIT_WORK(&mvm
->async_handlers_wk
, iwl_mvm_async_handlers_wk
);
455 INIT_WORK(&mvm
->roc_done_wk
, iwl_mvm_roc_done_wk
);
456 INIT_WORK(&mvm
->sta_drained_wk
, iwl_mvm_sta_drained_wk
);
457 INIT_WORK(&mvm
->d0i3_exit_work
, iwl_mvm_d0i3_exit_work
);
458 INIT_WORK(&mvm
->fw_error_dump_wk
, iwl_mvm_fw_error_dump_wk
);
459 INIT_DELAYED_WORK(&mvm
->tdls_cs
.dwork
, iwl_mvm_tdls_ch_switch_work
);
461 spin_lock_init(&mvm
->d0i3_tx_lock
);
462 spin_lock_init(&mvm
->refs_lock
);
463 skb_queue_head_init(&mvm
->d0i3_tx
);
464 init_waitqueue_head(&mvm
->d0i3_exit_waitq
);
466 SET_IEEE80211_DEV(mvm
->hw
, mvm
->trans
->dev
);
469 * Populate the state variables that the transport layer needs
472 trans_cfg
.op_mode
= op_mode
;
473 trans_cfg
.no_reclaim_cmds
= no_reclaim_cmds
;
474 trans_cfg
.n_no_reclaim_cmds
= ARRAY_SIZE(no_reclaim_cmds
);
475 trans_cfg
.rx_buf_size_8k
= iwlwifi_mod_params
.amsdu_size_8K
;
477 if (mvm
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_DW_BC_TABLE
)
478 trans_cfg
.bc_table_dword
= true;
480 trans_cfg
.command_names
= iwl_mvm_cmd_strings
;
482 trans_cfg
.cmd_queue
= IWL_MVM_CMD_QUEUE
;
483 trans_cfg
.cmd_fifo
= IWL_MVM_TX_FIFO_CMD
;
484 trans_cfg
.scd_set_active
= true;
486 trans_cfg
.sdio_adma_addr
= fw
->sdio_adma_addr
;
488 /* Set a short watchdog for the command queue */
489 trans_cfg
.cmd_q_wdg_timeout
=
490 iwlmvm_mod_params
.tfd_q_hang_detect
? IWL_DEF_WD_TIMEOUT
:
491 IWL_WATCHDOG_DISABLED
;
493 snprintf(mvm
->hw
->wiphy
->fw_version
,
494 sizeof(mvm
->hw
->wiphy
->fw_version
),
495 "%s", fw
->fw_version
);
497 /* Configure transport layer */
498 iwl_trans_configure(mvm
->trans
, &trans_cfg
);
500 trans
->rx_mpdu_cmd
= REPLY_RX_MPDU_CMD
;
501 trans
->rx_mpdu_cmd_hdr_size
= sizeof(struct iwl_rx_mpdu_res_start
);
502 trans
->dbg_dest_tlv
= mvm
->fw
->dbg_dest_tlv
;
503 trans
->dbg_dest_reg_num
= mvm
->fw
->dbg_dest_reg_num
;
504 memcpy(trans
->dbg_conf_tlv
, mvm
->fw
->dbg_conf_tlv
,
505 sizeof(trans
->dbg_conf_tlv
));
507 /* set up notification wait support */
508 iwl_notification_wait_init(&mvm
->notif_wait
);
511 mvm
->phy_db
= iwl_phy_db_init(trans
);
513 IWL_ERR(mvm
, "Cannot init phy_db\n");
517 IWL_INFO(mvm
, "Detected %s, REV=0x%X\n",
518 mvm
->cfg
->name
, mvm
->trans
->hw_rev
);
520 min_backoff
= calc_min_backoff(trans
, cfg
);
521 iwl_mvm_tt_initialize(mvm
, min_backoff
);
522 /* set the nvm_file_name according to priority */
523 if (iwlwifi_mod_params
.nvm_file
) {
524 mvm
->nvm_file_name
= iwlwifi_mod_params
.nvm_file
;
526 if ((trans
->cfg
->device_family
== IWL_DEVICE_FAMILY_8000
) &&
527 (CSR_HW_REV_STEP(trans
->hw_rev
) == SILICON_A_STEP
))
528 mvm
->nvm_file_name
= mvm
->cfg
->default_nvm_file_8000A
;
530 mvm
->nvm_file_name
= mvm
->cfg
->default_nvm_file
;
533 if (WARN(cfg
->no_power_up_nic_in_init
&& !mvm
->nvm_file_name
,
534 "not allowing power-up and not having nvm_file\n"))
538 * Even if nvm exists in the nvm_file driver should read again the nvm
539 * from the nic because there might be entries that exist in the OTP
540 * and not in the file.
541 * for nics with no_power_up_nic_in_init: rely completley on nvm_file
543 if (cfg
->no_power_up_nic_in_init
&& mvm
->nvm_file_name
) {
544 err
= iwl_nvm_init(mvm
, false);
548 err
= iwl_trans_start_hw(mvm
->trans
);
552 mutex_lock(&mvm
->mutex
);
553 err
= iwl_run_init_mvm_ucode(mvm
, true);
554 if (!err
|| !iwlmvm_mod_params
.init_dbg
)
555 iwl_trans_stop_device(trans
);
556 mutex_unlock(&mvm
->mutex
);
557 /* returns 0 if successful, 1 if success but in rfkill */
558 if (err
< 0 && !iwlmvm_mod_params
.init_dbg
) {
559 IWL_ERR(mvm
, "Failed to run INIT ucode: %d\n", err
);
564 scan_size
= iwl_mvm_scan_size(mvm
);
566 mvm
->scan_cmd
= kmalloc(scan_size
, GFP_KERNEL
);
570 /* Set EBS as successful as long as not stated otherwise by the FW. */
571 mvm
->last_ebs_successful
= true;
573 err
= iwl_mvm_mac_setup_register(mvm
);
577 err
= iwl_mvm_dbgfs_register(mvm
, dbgfs_dir
);
581 memset(&mvm
->rx_stats
, 0, sizeof(struct mvm_statistics_rx
));
583 /* rpm starts with a taken ref. only set the appropriate bit here. */
584 mvm
->refs
[IWL_MVM_REF_UCODE_DOWN
] = 1;
589 ieee80211_unregister_hw(mvm
->hw
);
590 iwl_mvm_leds_exit(mvm
);
592 iwl_phy_db_free(mvm
->phy_db
);
593 kfree(mvm
->scan_cmd
);
594 if (!cfg
->no_power_up_nic_in_init
|| !mvm
->nvm_file_name
)
595 iwl_trans_op_mode_leave(trans
);
596 ieee80211_free_hw(mvm
->hw
);
600 static void iwl_op_mode_mvm_stop(struct iwl_op_mode
*op_mode
)
602 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
605 iwl_mvm_leds_exit(mvm
);
607 iwl_mvm_tt_exit(mvm
);
609 ieee80211_unregister_hw(mvm
->hw
);
611 kfree(mvm
->scan_cmd
);
612 kfree(mvm
->mcast_filter_cmd
);
613 mvm
->mcast_filter_cmd
= NULL
;
615 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
616 kfree(mvm
->d3_resume_sram
);
617 if (mvm
->nd_config
) {
618 kfree(mvm
->nd_config
->match_sets
);
619 kfree(mvm
->nd_config
);
620 mvm
->nd_config
= NULL
;
624 iwl_trans_op_mode_leave(mvm
->trans
);
626 iwl_phy_db_free(mvm
->phy_db
);
629 iwl_free_nvm_data(mvm
->nvm_data
);
630 for (i
= 0; i
< NVM_MAX_NUM_SECTIONS
; i
++)
631 kfree(mvm
->nvm_sections
[i
].data
);
633 ieee80211_free_hw(mvm
->hw
);
636 struct iwl_async_handler_entry
{
637 struct list_head list
;
638 struct iwl_rx_cmd_buffer rxb
;
639 int (*fn
)(struct iwl_mvm
*mvm
, struct iwl_rx_cmd_buffer
*rxb
,
640 struct iwl_device_cmd
*cmd
);
643 void iwl_mvm_async_handlers_purge(struct iwl_mvm
*mvm
)
645 struct iwl_async_handler_entry
*entry
, *tmp
;
647 spin_lock_bh(&mvm
->async_handlers_lock
);
648 list_for_each_entry_safe(entry
, tmp
, &mvm
->async_handlers_list
, list
) {
649 iwl_free_rxb(&entry
->rxb
);
650 list_del(&entry
->list
);
653 spin_unlock_bh(&mvm
->async_handlers_lock
);
656 static void iwl_mvm_async_handlers_wk(struct work_struct
*wk
)
658 struct iwl_mvm
*mvm
=
659 container_of(wk
, struct iwl_mvm
, async_handlers_wk
);
660 struct iwl_async_handler_entry
*entry
, *tmp
;
661 struct list_head local_list
;
663 INIT_LIST_HEAD(&local_list
);
665 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
666 mutex_lock(&mvm
->mutex
);
669 * Sync with Rx path with a lock. Remove all the entries from this list,
670 * add them to a local one (lock free), and then handle them.
672 spin_lock_bh(&mvm
->async_handlers_lock
);
673 list_splice_init(&mvm
->async_handlers_list
, &local_list
);
674 spin_unlock_bh(&mvm
->async_handlers_lock
);
676 list_for_each_entry_safe(entry
, tmp
, &local_list
, list
) {
677 if (entry
->fn(mvm
, &entry
->rxb
, NULL
))
679 "returned value from ASYNC handlers are ignored\n");
680 iwl_free_rxb(&entry
->rxb
);
681 list_del(&entry
->list
);
684 mutex_unlock(&mvm
->mutex
);
687 static int iwl_mvm_rx_dispatch(struct iwl_op_mode
*op_mode
,
688 struct iwl_rx_cmd_buffer
*rxb
,
689 struct iwl_device_cmd
*cmd
)
691 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
692 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
696 * Do the notification wait before RX handlers so
697 * even if the RX handler consumes the RXB we have
698 * access to it in the notification wait entry.
700 iwl_notification_wait_notify(&mvm
->notif_wait
, pkt
);
702 for (i
= 0; i
< ARRAY_SIZE(iwl_mvm_rx_handlers
); i
++) {
703 const struct iwl_rx_handlers
*rx_h
= &iwl_mvm_rx_handlers
[i
];
704 struct iwl_async_handler_entry
*entry
;
706 if (rx_h
->cmd_id
!= pkt
->hdr
.cmd
)
710 return rx_h
->fn(mvm
, rxb
, cmd
);
712 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
713 /* we can't do much... */
717 entry
->rxb
._page
= rxb_steal_page(rxb
);
718 entry
->rxb
._offset
= rxb
->_offset
;
719 entry
->rxb
._rx_page_order
= rxb
->_rx_page_order
;
720 entry
->fn
= rx_h
->fn
;
721 spin_lock(&mvm
->async_handlers_lock
);
722 list_add_tail(&entry
->list
, &mvm
->async_handlers_list
);
723 spin_unlock(&mvm
->async_handlers_lock
);
724 schedule_work(&mvm
->async_handlers_wk
);
731 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode
*op_mode
, int queue
)
733 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
734 int mq
= mvm
->queue_to_mac80211
[queue
];
736 if (WARN_ON_ONCE(mq
== IWL_INVALID_MAC80211_QUEUE
))
739 if (atomic_inc_return(&mvm
->mac80211_queue_stop_count
[mq
]) > 1) {
740 IWL_DEBUG_TX_QUEUES(mvm
,
741 "queue %d (mac80211 %d) already stopped\n",
746 ieee80211_stop_queue(mvm
->hw
, mq
);
749 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode
*op_mode
, int queue
)
751 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
752 int mq
= mvm
->queue_to_mac80211
[queue
];
754 if (WARN_ON_ONCE(mq
== IWL_INVALID_MAC80211_QUEUE
))
757 if (atomic_dec_return(&mvm
->mac80211_queue_stop_count
[mq
]) > 0) {
758 IWL_DEBUG_TX_QUEUES(mvm
,
759 "queue %d (mac80211 %d) still stopped\n",
764 ieee80211_wake_queue(mvm
->hw
, mq
);
767 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm
*mvm
, bool state
)
770 set_bit(IWL_MVM_STATUS_HW_CTKILL
, &mvm
->status
);
772 clear_bit(IWL_MVM_STATUS_HW_CTKILL
, &mvm
->status
);
774 wiphy_rfkill_set_hw_state(mvm
->hw
->wiphy
, iwl_mvm_is_radio_killed(mvm
));
777 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode
*op_mode
, bool state
)
779 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
780 bool calibrating
= ACCESS_ONCE(mvm
->calibrating
);
783 set_bit(IWL_MVM_STATUS_HW_RFKILL
, &mvm
->status
);
785 clear_bit(IWL_MVM_STATUS_HW_RFKILL
, &mvm
->status
);
787 wiphy_rfkill_set_hw_state(mvm
->hw
->wiphy
, iwl_mvm_is_radio_killed(mvm
));
789 /* iwl_run_init_mvm_ucode is waiting for results, abort it */
791 iwl_abort_notification_waits(&mvm
->notif_wait
);
794 * Stop the device if we run OPERATIONAL firmware or if we are in the
795 * middle of the calibrations.
797 return state
&& (mvm
->cur_ucode
!= IWL_UCODE_INIT
|| calibrating
);
800 static void iwl_mvm_free_skb(struct iwl_op_mode
*op_mode
, struct sk_buff
*skb
)
802 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
803 struct ieee80211_tx_info
*info
;
805 info
= IEEE80211_SKB_CB(skb
);
806 iwl_trans_free_tx_cmd(mvm
->trans
, info
->driver_data
[1]);
807 ieee80211_free_txskb(mvm
->hw
, skb
);
810 struct iwl_mvm_reprobe
{
812 struct work_struct work
;
815 static void iwl_mvm_reprobe_wk(struct work_struct
*wk
)
817 struct iwl_mvm_reprobe
*reprobe
;
819 reprobe
= container_of(wk
, struct iwl_mvm_reprobe
, work
);
820 if (device_reprobe(reprobe
->dev
))
821 dev_err(reprobe
->dev
, "reprobe failed!\n");
823 module_put(THIS_MODULE
);
826 static void iwl_mvm_fw_error_dump_wk(struct work_struct
*work
)
828 struct iwl_mvm
*mvm
=
829 container_of(work
, struct iwl_mvm
, fw_error_dump_wk
);
831 if (iwl_mvm_ref_sync(mvm
, IWL_MVM_REF_FW_DBG_COLLECT
))
834 mutex_lock(&mvm
->mutex
);
835 iwl_mvm_fw_error_dump(mvm
);
837 /* start recording again if the firmware is not crashed */
838 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR
, &mvm
->trans
->status
)) &&
839 mvm
->fw
->dbg_dest_tlv
&&
840 iwl_mvm_start_fw_dbg_conf(mvm
, mvm
->fw_dbg_conf
));
842 mutex_unlock(&mvm
->mutex
);
844 iwl_mvm_unref(mvm
, IWL_MVM_REF_FW_DBG_COLLECT
);
847 void iwl_mvm_nic_restart(struct iwl_mvm
*mvm
, bool fw_error
)
849 iwl_abort_notification_waits(&mvm
->notif_wait
);
852 * This is a bit racy, but worst case we tell mac80211 about
853 * a stopped/aborted scan when that was already done which
854 * is not a problem. It is necessary to abort any os scan
855 * here because mac80211 requires having the scan cleared
857 * We'll reset the scan_status to NONE in restart cleanup in
858 * the next start() call from mac80211. If restart isn't called
859 * (no fw restart) scan status will stay busy.
861 switch (mvm
->scan_status
) {
862 case IWL_MVM_SCAN_NONE
:
864 case IWL_MVM_SCAN_OS
:
865 ieee80211_scan_completed(mvm
->hw
, true);
867 case IWL_MVM_SCAN_SCHED
:
868 /* Sched scan will be restarted by mac80211 in restart_hw. */
869 if (!mvm
->restart_fw
)
870 ieee80211_sched_scan_stopped(mvm
->hw
);
875 * If we're restarting already, don't cycle restarts.
876 * If INIT fw asserted, it will likely fail again.
877 * If WoWLAN fw asserted, don't restart either, mac80211
878 * can't recover this since we're already half suspended.
880 if (!mvm
->restart_fw
&& fw_error
) {
881 schedule_work(&mvm
->fw_error_dump_wk
);
882 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART
,
884 struct iwl_mvm_reprobe
*reprobe
;
887 "Firmware error during reconfiguration - reprobe!\n");
890 * get a module reference to avoid doing this while unloading
891 * anyway and to avoid scheduling a work with code that's
894 if (!try_module_get(THIS_MODULE
)) {
895 IWL_ERR(mvm
, "Module is being unloaded - abort\n");
899 reprobe
= kzalloc(sizeof(*reprobe
), GFP_ATOMIC
);
901 module_put(THIS_MODULE
);
904 reprobe
->dev
= mvm
->trans
->dev
;
905 INIT_WORK(&reprobe
->work
, iwl_mvm_reprobe_wk
);
906 schedule_work(&reprobe
->work
);
907 } else if (mvm
->cur_ucode
== IWL_UCODE_REGULAR
) {
908 /* don't let the transport/FW power down */
909 iwl_mvm_ref(mvm
, IWL_MVM_REF_UCODE_DOWN
);
911 if (fw_error
&& mvm
->restart_fw
> 0)
913 ieee80211_restart_hw(mvm
->hw
);
917 static void iwl_mvm_nic_error(struct iwl_op_mode
*op_mode
)
919 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
921 iwl_mvm_dump_nic_error_log(mvm
);
923 iwl_mvm_nic_restart(mvm
, true);
926 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode
*op_mode
)
928 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
931 iwl_mvm_nic_restart(mvm
, true);
934 struct iwl_d0i3_iter_data
{
939 bool disable_offloading
;
942 static bool iwl_mvm_disallow_offloading(struct iwl_mvm
*mvm
,
943 struct ieee80211_vif
*vif
,
944 struct iwl_d0i3_iter_data
*iter_data
)
946 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
947 struct ieee80211_sta
*ap_sta
;
948 struct iwl_mvm_sta
*mvmsta
;
949 u32 available_tids
= 0;
952 if (WARN_ON(vif
->type
!= NL80211_IFTYPE_STATION
||
953 mvmvif
->ap_sta_id
== IWL_MVM_STATION_COUNT
))
956 ap_sta
= rcu_dereference(mvm
->fw_id_to_mac_id
[mvmvif
->ap_sta_id
]);
957 if (IS_ERR_OR_NULL(ap_sta
))
960 mvmsta
= iwl_mvm_sta_from_mac80211(ap_sta
);
961 spin_lock_bh(&mvmsta
->lock
);
962 for (tid
= 0; tid
< IWL_MAX_TID_COUNT
; tid
++) {
963 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
966 * in case of pending tx packets, don't use this tid
967 * for offloading in order to prevent reuse of the same
970 if (iwl_mvm_tid_queued(tid_data
))
973 if (tid_data
->state
!= IWL_AGG_OFF
)
976 available_tids
|= BIT(tid
);
978 spin_unlock_bh(&mvmsta
->lock
);
981 * disallow protocol offloading if we have no available tid
982 * (with no pending frames and no active aggregation,
983 * as we don't handle "holes" properly - the scheduler needs the
984 * frame's seq number and TFD index to match)
989 /* for simplicity, just use the first available tid */
990 iter_data
->offloading_tid
= ffs(available_tids
) - 1;
994 static void iwl_mvm_enter_d0i3_iterator(void *_data
, u8
*mac
,
995 struct ieee80211_vif
*vif
)
997 struct iwl_d0i3_iter_data
*data
= _data
;
998 struct iwl_mvm
*mvm
= data
->mvm
;
999 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1000 u32 flags
= CMD_ASYNC
| CMD_HIGH_PRIO
| CMD_SEND_IN_IDLE
;
1002 IWL_DEBUG_RPM(mvm
, "entering D0i3 - vif %pM\n", vif
->addr
);
1003 if (vif
->type
!= NL80211_IFTYPE_STATION
||
1004 !vif
->bss_conf
.assoc
)
1008 * in case of pending tx packets or active aggregations,
1009 * avoid offloading features in order to prevent reuse of
1010 * the same qos seq counters.
1012 if (iwl_mvm_disallow_offloading(mvm
, vif
, data
))
1013 data
->disable_offloading
= true;
1015 iwl_mvm_update_d0i3_power_mode(mvm
, vif
, true, flags
);
1016 iwl_mvm_send_proto_offload(mvm
, vif
, data
->disable_offloading
, flags
);
1019 * on init/association, mvm already configures POWER_TABLE_CMD
1020 * and REPLY_MCAST_FILTER_CMD, so currently don't
1021 * reconfigure them (we might want to use different
1022 * params later on, though).
1024 data
->ap_sta_id
= mvmvif
->ap_sta_id
;
1028 static void iwl_mvm_set_wowlan_data(struct iwl_mvm
*mvm
,
1029 struct iwl_wowlan_config_cmd
*cmd
,
1030 struct iwl_d0i3_iter_data
*iter_data
)
1032 struct ieee80211_sta
*ap_sta
;
1033 struct iwl_mvm_sta
*mvm_ap_sta
;
1035 if (iter_data
->ap_sta_id
== IWL_MVM_STATION_COUNT
)
1040 ap_sta
= rcu_dereference(mvm
->fw_id_to_mac_id
[iter_data
->ap_sta_id
]);
1041 if (IS_ERR_OR_NULL(ap_sta
))
1044 mvm_ap_sta
= iwl_mvm_sta_from_mac80211(ap_sta
);
1045 cmd
->is_11n_connection
= ap_sta
->ht_cap
.ht_supported
;
1046 cmd
->offloading_tid
= iter_data
->offloading_tid
;
1049 * The d0i3 uCode takes care of the nonqos counters,
1050 * so configure only the qos seq ones.
1052 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta
, cmd
);
1057 int iwl_mvm_enter_d0i3(struct iwl_op_mode
*op_mode
)
1059 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
1060 u32 flags
= CMD_ASYNC
| CMD_HIGH_PRIO
| CMD_SEND_IN_IDLE
;
1062 struct iwl_d0i3_iter_data d0i3_iter_data
= {
1065 struct iwl_wowlan_config_cmd wowlan_config_cmd
= {
1066 .wakeup_filter
= cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME
|
1067 IWL_WOWLAN_WAKEUP_BEACON_MISS
|
1068 IWL_WOWLAN_WAKEUP_LINK_CHANGE
|
1069 IWL_WOWLAN_WAKEUP_BCN_FILTERING
),
1071 struct iwl_d3_manager_config d3_cfg_cmd
= {
1072 .min_sleep_time
= cpu_to_le32(1000),
1073 .wakeup_flags
= cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR
),
1076 IWL_DEBUG_RPM(mvm
, "MVM entering D0i3\n");
1078 /* make sure we have no running tx while configuring the qos */
1079 set_bit(IWL_MVM_STATUS_IN_D0I3
, &mvm
->status
);
1083 * iwl_mvm_ref_sync takes a reference before checking the flag.
1084 * so by checking there is no held reference we prevent a state
1085 * in which iwl_mvm_ref_sync continues successfully while we
1086 * configure the firmware to enter d0i3
1088 if (iwl_mvm_ref_taken(mvm
)) {
1089 IWL_DEBUG_RPM(mvm
->trans
, "abort d0i3 due to taken ref\n");
1090 clear_bit(IWL_MVM_STATUS_IN_D0I3
, &mvm
->status
);
1091 wake_up(&mvm
->d0i3_exit_waitq
);
1095 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
1096 IEEE80211_IFACE_ITER_NORMAL
,
1097 iwl_mvm_enter_d0i3_iterator
,
1099 if (d0i3_iter_data
.vif_count
== 1) {
1100 mvm
->d0i3_ap_sta_id
= d0i3_iter_data
.ap_sta_id
;
1101 mvm
->d0i3_offloading
= !d0i3_iter_data
.disable_offloading
;
1103 WARN_ON_ONCE(d0i3_iter_data
.vif_count
> 1);
1104 mvm
->d0i3_ap_sta_id
= IWL_MVM_STATION_COUNT
;
1105 mvm
->d0i3_offloading
= false;
1108 iwl_mvm_set_wowlan_data(mvm
, &wowlan_config_cmd
, &d0i3_iter_data
);
1109 ret
= iwl_mvm_send_cmd_pdu(mvm
, WOWLAN_CONFIGURATION
, flags
,
1110 sizeof(wowlan_config_cmd
),
1111 &wowlan_config_cmd
);
1115 return iwl_mvm_send_cmd_pdu(mvm
, D3_CONFIG_CMD
,
1116 flags
| CMD_MAKE_TRANS_IDLE
,
1117 sizeof(d3_cfg_cmd
), &d3_cfg_cmd
);
1120 static void iwl_mvm_exit_d0i3_iterator(void *_data
, u8
*mac
,
1121 struct ieee80211_vif
*vif
)
1123 struct iwl_mvm
*mvm
= _data
;
1124 u32 flags
= CMD_ASYNC
| CMD_HIGH_PRIO
;
1126 IWL_DEBUG_RPM(mvm
, "exiting D0i3 - vif %pM\n", vif
->addr
);
1127 if (vif
->type
!= NL80211_IFTYPE_STATION
||
1128 !vif
->bss_conf
.assoc
)
1131 iwl_mvm_update_d0i3_power_mode(mvm
, vif
, false, flags
);
1134 static void iwl_mvm_d0i3_disconnect_iter(void *data
, u8
*mac
,
1135 struct ieee80211_vif
*vif
)
1137 struct iwl_mvm
*mvm
= data
;
1138 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1140 if (vif
->type
== NL80211_IFTYPE_STATION
&& vif
->bss_conf
.assoc
&&
1141 mvm
->d0i3_ap_sta_id
== mvmvif
->ap_sta_id
)
1142 ieee80211_connection_loss(vif
);
1145 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm
*mvm
, __le16
*qos_seq
)
1147 struct ieee80211_sta
*sta
= NULL
;
1148 struct iwl_mvm_sta
*mvm_ap_sta
;
1150 bool wake_queues
= false;
1152 lockdep_assert_held(&mvm
->mutex
);
1154 spin_lock_bh(&mvm
->d0i3_tx_lock
);
1156 if (mvm
->d0i3_ap_sta_id
== IWL_MVM_STATION_COUNT
)
1159 IWL_DEBUG_RPM(mvm
, "re-enqueue packets\n");
1161 /* get the sta in order to update seq numbers and re-enqueue skbs */
1162 sta
= rcu_dereference_protected(
1163 mvm
->fw_id_to_mac_id
[mvm
->d0i3_ap_sta_id
],
1164 lockdep_is_held(&mvm
->mutex
));
1166 if (IS_ERR_OR_NULL(sta
)) {
1171 if (mvm
->d0i3_offloading
&& qos_seq
) {
1172 /* update qos seq numbers if offloading was enabled */
1173 mvm_ap_sta
= iwl_mvm_sta_from_mac80211(sta
);
1174 for (i
= 0; i
< IWL_MAX_TID_COUNT
; i
++) {
1175 u16 seq
= le16_to_cpu(qos_seq
[i
]);
1176 /* firmware stores last-used one, we store next one */
1178 mvm_ap_sta
->tid_data
[i
].seq_number
= seq
;
1182 /* re-enqueue (or drop) all packets */
1183 while (!skb_queue_empty(&mvm
->d0i3_tx
)) {
1184 struct sk_buff
*skb
= __skb_dequeue(&mvm
->d0i3_tx
);
1186 if (!sta
|| iwl_mvm_tx_skb(mvm
, skb
, sta
))
1187 ieee80211_free_txskb(mvm
->hw
, skb
);
1189 /* if the skb_queue is not empty, we need to wake queues */
1192 clear_bit(IWL_MVM_STATUS_IN_D0I3
, &mvm
->status
);
1193 wake_up(&mvm
->d0i3_exit_waitq
);
1194 mvm
->d0i3_ap_sta_id
= IWL_MVM_STATION_COUNT
;
1196 ieee80211_wake_queues(mvm
->hw
);
1198 spin_unlock_bh(&mvm
->d0i3_tx_lock
);
1201 static void iwl_mvm_d0i3_exit_work(struct work_struct
*wk
)
1203 struct iwl_mvm
*mvm
= container_of(wk
, struct iwl_mvm
, d0i3_exit_work
);
1204 struct iwl_host_cmd get_status_cmd
= {
1205 .id
= WOWLAN_GET_STATUSES
,
1206 .flags
= CMD_HIGH_PRIO
| CMD_WANT_SKB
,
1208 struct iwl_wowlan_status
*status
;
1210 u32 disconnection_reasons
, wakeup_reasons
;
1211 __le16
*qos_seq
= NULL
;
1213 mutex_lock(&mvm
->mutex
);
1214 ret
= iwl_mvm_send_cmd(mvm
, &get_status_cmd
);
1218 if (!get_status_cmd
.resp_pkt
)
1221 status
= (void *)get_status_cmd
.resp_pkt
->data
;
1222 wakeup_reasons
= le32_to_cpu(status
->wakeup_reasons
);
1223 qos_seq
= status
->qos_seq_ctr
;
1225 IWL_DEBUG_RPM(mvm
, "wakeup reasons: 0x%x\n", wakeup_reasons
);
1227 disconnection_reasons
=
1228 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON
|
1229 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH
;
1230 if (wakeup_reasons
& disconnection_reasons
)
1231 ieee80211_iterate_active_interfaces(
1232 mvm
->hw
, IEEE80211_IFACE_ITER_NORMAL
,
1233 iwl_mvm_d0i3_disconnect_iter
, mvm
);
1235 iwl_free_resp(&get_status_cmd
);
1237 iwl_mvm_d0i3_enable_tx(mvm
, qos_seq
);
1238 iwl_mvm_unref(mvm
, IWL_MVM_REF_EXIT_WORK
);
1239 mutex_unlock(&mvm
->mutex
);
1242 int _iwl_mvm_exit_d0i3(struct iwl_mvm
*mvm
)
1244 u32 flags
= CMD_ASYNC
| CMD_HIGH_PRIO
| CMD_SEND_IN_IDLE
|
1248 IWL_DEBUG_RPM(mvm
, "MVM exiting D0i3\n");
1250 mutex_lock(&mvm
->d0i3_suspend_mutex
);
1251 if (test_bit(D0I3_DEFER_WAKEUP
, &mvm
->d0i3_suspend_flags
)) {
1252 IWL_DEBUG_RPM(mvm
, "Deferring d0i3 exit until resume\n");
1253 __set_bit(D0I3_PENDING_WAKEUP
, &mvm
->d0i3_suspend_flags
);
1254 mutex_unlock(&mvm
->d0i3_suspend_mutex
);
1257 mutex_unlock(&mvm
->d0i3_suspend_mutex
);
1259 ret
= iwl_mvm_send_cmd_pdu(mvm
, D0I3_END_CMD
, flags
, 0, NULL
);
1263 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
1264 IEEE80211_IFACE_ITER_NORMAL
,
1265 iwl_mvm_exit_d0i3_iterator
,
1268 schedule_work(&mvm
->d0i3_exit_work
);
1272 int iwl_mvm_exit_d0i3(struct iwl_op_mode
*op_mode
)
1274 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
1276 iwl_mvm_ref(mvm
, IWL_MVM_REF_EXIT_WORK
);
1277 return _iwl_mvm_exit_d0i3(mvm
);
1280 static void iwl_mvm_napi_add(struct iwl_op_mode
*op_mode
,
1281 struct napi_struct
*napi
,
1282 struct net_device
*napi_dev
,
1283 int (*poll
)(struct napi_struct
*, int),
1286 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
1288 ieee80211_napi_add(mvm
->hw
, napi
, napi_dev
, poll
, weight
);
1291 static const struct iwl_op_mode_ops iwl_mvm_ops
= {
1292 .start
= iwl_op_mode_mvm_start
,
1293 .stop
= iwl_op_mode_mvm_stop
,
1294 .rx
= iwl_mvm_rx_dispatch
,
1295 .queue_full
= iwl_mvm_stop_sw_queue
,
1296 .queue_not_full
= iwl_mvm_wake_sw_queue
,
1297 .hw_rf_kill
= iwl_mvm_set_hw_rfkill_state
,
1298 .free_skb
= iwl_mvm_free_skb
,
1299 .nic_error
= iwl_mvm_nic_error
,
1300 .cmd_queue_full
= iwl_mvm_cmd_queue_full
,
1301 .nic_config
= iwl_mvm_nic_config
,
1302 .enter_d0i3
= iwl_mvm_enter_d0i3
,
1303 .exit_d0i3
= iwl_mvm_exit_d0i3
,
1304 .napi_add
= iwl_mvm_napi_add
,