1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
63 #include <linux/module.h>
64 #include <net/mac80211.h>
66 #include "iwl-notif-wait.h"
67 #include "iwl-trans.h"
68 #include "iwl-op-mode.h"
70 #include "iwl-debug.h"
72 #include "iwl-modparams.h"
74 #include "iwl-phy-db.h"
75 #include "iwl-eeprom-parse.h"
80 #include "fw-api-scan.h"
81 #include "time-event.h"
84 * module name, copyright, version, etc.
86 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
88 #define DRV_VERSION IWLWIFI_VERSION
90 MODULE_DESCRIPTION(DRV_DESCRIPTION
);
91 MODULE_VERSION(DRV_VERSION
);
92 MODULE_AUTHOR(DRV_COPYRIGHT
" " DRV_AUTHOR
);
93 MODULE_LICENSE("GPL");
95 static const struct iwl_op_mode_ops iwl_mvm_ops
;
97 struct iwl_mvm_mod_params iwlmvm_mod_params
= {
98 .power_scheme
= IWL_POWER_SCHEME_BPS
,
99 /* rest of fields are 0 by default */
102 module_param_named(init_dbg
, iwlmvm_mod_params
.init_dbg
, bool, S_IRUGO
);
103 MODULE_PARM_DESC(init_dbg
,
104 "set to true to debug an ASSERT in INIT fw (default: false");
105 module_param_named(power_scheme
, iwlmvm_mod_params
.power_scheme
, int, S_IRUGO
);
106 MODULE_PARM_DESC(power_scheme
,
107 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
110 * module init and exit functions
112 static int __init
iwl_mvm_init(void)
116 ret
= iwl_mvm_rate_control_register();
118 pr_err("Unable to register rate control algorithm: %d\n", ret
);
122 ret
= iwl_opmode_register("iwlmvm", &iwl_mvm_ops
);
125 pr_err("Unable to register MVM op_mode: %d\n", ret
);
126 iwl_mvm_rate_control_unregister();
131 module_init(iwl_mvm_init
);
133 static void __exit
iwl_mvm_exit(void)
135 iwl_opmode_deregister("iwlmvm");
136 iwl_mvm_rate_control_unregister();
138 module_exit(iwl_mvm_exit
);
140 static void iwl_mvm_nic_config(struct iwl_op_mode
*op_mode
)
142 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
143 u8 radio_cfg_type
, radio_cfg_step
, radio_cfg_dash
;
146 radio_cfg_type
= (mvm
->fw
->phy_config
& FW_PHY_CFG_RADIO_TYPE
) >>
147 FW_PHY_CFG_RADIO_TYPE_POS
;
148 radio_cfg_step
= (mvm
->fw
->phy_config
& FW_PHY_CFG_RADIO_STEP
) >>
149 FW_PHY_CFG_RADIO_STEP_POS
;
150 radio_cfg_dash
= (mvm
->fw
->phy_config
& FW_PHY_CFG_RADIO_DASH
) >>
151 FW_PHY_CFG_RADIO_DASH_POS
;
154 reg_val
|= CSR_HW_REV_STEP(mvm
->trans
->hw_rev
) <<
155 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP
;
156 reg_val
|= CSR_HW_REV_DASH(mvm
->trans
->hw_rev
) <<
157 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH
;
159 /* radio configuration */
160 reg_val
|= radio_cfg_type
<< CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE
;
161 reg_val
|= radio_cfg_step
<< CSR_HW_IF_CONFIG_REG_POS_PHY_STEP
;
162 reg_val
|= radio_cfg_dash
<< CSR_HW_IF_CONFIG_REG_POS_PHY_DASH
;
164 WARN_ON((radio_cfg_type
<< CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE
) &
165 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE
);
168 reg_val
|= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI
;
170 iwl_trans_set_bits_mask(mvm
->trans
, CSR_HW_IF_CONFIG_REG
,
171 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH
|
172 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP
|
173 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE
|
174 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP
|
175 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH
|
176 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI
|
177 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI
,
180 IWL_DEBUG_INFO(mvm
, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type
,
181 radio_cfg_step
, radio_cfg_dash
);
184 * W/A : NIC is stuck in a reset state after Early PCIe power off
185 * (PCIe power is lost before PERST# is asserted), causing ME FW
186 * to lose ownership and not being able to obtain it back.
188 if (mvm
->trans
->cfg
->device_family
!= IWL_DEVICE_FAMILY_8000
)
189 iwl_set_bits_mask_prph(mvm
->trans
, APMG_PS_CTRL_REG
,
190 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS
,
191 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS
);
194 struct iwl_rx_handlers
{
197 int (*fn
)(struct iwl_mvm
*mvm
, struct iwl_rx_cmd_buffer
*rxb
,
198 struct iwl_device_cmd
*cmd
);
201 #define RX_HANDLER(_cmd_id, _fn, _async) \
202 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
205 * Handlers for fw notifications
206 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
207 * This list should be in order of frequency for performance purposes.
209 * The handler can be SYNC - this means that it will be called in the Rx path
210 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
211 * only in this case!), it should be set as ASYNC. In that case, it will be
212 * called from a worker with mvm->mutex held.
214 static const struct iwl_rx_handlers iwl_mvm_rx_handlers
[] = {
215 RX_HANDLER(REPLY_RX_MPDU_CMD
, iwl_mvm_rx_rx_mpdu
, false),
216 RX_HANDLER(REPLY_RX_PHY_CMD
, iwl_mvm_rx_rx_phy_cmd
, false),
217 RX_HANDLER(TX_CMD
, iwl_mvm_rx_tx_cmd
, false),
218 RX_HANDLER(BA_NOTIF
, iwl_mvm_rx_ba_notif
, false),
220 RX_HANDLER(BT_PROFILE_NOTIFICATION
, iwl_mvm_rx_bt_coex_notif
, true),
221 RX_HANDLER(BEACON_NOTIFICATION
, iwl_mvm_rx_beacon_notif
, false),
222 RX_HANDLER(STATISTICS_NOTIFICATION
, iwl_mvm_rx_statistics
, true),
224 RX_HANDLER(TIME_EVENT_NOTIFICATION
, iwl_mvm_rx_time_event_notif
, false),
226 RX_HANDLER(EOSP_NOTIFICATION
, iwl_mvm_rx_eosp_notif
, false),
228 RX_HANDLER(SCAN_REQUEST_CMD
, iwl_mvm_rx_scan_response
, false),
229 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION
, iwl_mvm_rx_scan_complete
, false),
230 RX_HANDLER(SCAN_OFFLOAD_COMPLETE
,
231 iwl_mvm_rx_scan_offload_complete_notif
, true),
232 RX_HANDLER(MATCH_FOUND_NOTIFICATION
, iwl_mvm_rx_sched_scan_results
,
235 RX_HANDLER(RADIO_VERSION_NOTIFICATION
, iwl_mvm_rx_radio_ver
, false),
236 RX_HANDLER(CARD_STATE_NOTIFICATION
, iwl_mvm_rx_card_state_notif
, false),
238 RX_HANDLER(MISSED_BEACONS_NOTIFICATION
, iwl_mvm_rx_missed_beacons_notif
,
241 RX_HANDLER(REPLY_ERROR
, iwl_mvm_rx_fw_error
, false),
242 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION
,
243 iwl_mvm_power_uapsd_misbehaving_ap_notif
, false),
246 #define CMD(x) [x] = #x
248 static const char *iwl_mvm_cmd_strings
[REPLY_MAX
] = {
251 CMD(INIT_COMPLETE_NOTIF
),
252 CMD(PHY_CONTEXT_CMD
),
256 CMD(MAC_CONTEXT_CMD
),
258 CMD(TIME_EVENT_NOTIFICATION
),
259 CMD(BINDING_CONTEXT_CMD
),
261 CMD(NON_QOS_TX_COUNTER_CMD
),
262 CMD(RADIO_VERSION_NOTIFICATION
),
263 CMD(SCAN_REQUEST_CMD
),
265 CMD(SCAN_START_NOTIFICATION
),
266 CMD(SCAN_RESULTS_NOTIFICATION
),
267 CMD(SCAN_COMPLETE_NOTIFICATION
),
269 CMD(PHY_CONFIGURATION_CMD
),
270 CMD(CALIB_RES_NOTIF_PHY_DB
),
271 CMD(SET_CALIB_DEFAULT_CMD
),
272 CMD(CALIBRATION_COMPLETE_NOTIFICATION
),
277 CMD(SCAN_OFFLOAD_CONFIG_CMD
),
278 CMD(MATCH_FOUND_NOTIFICATION
),
279 CMD(SCAN_OFFLOAD_REQUEST_CMD
),
280 CMD(SCAN_OFFLOAD_ABORT_CMD
),
281 CMD(SCAN_OFFLOAD_COMPLETE
),
282 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD
),
283 CMD(POWER_TABLE_CMD
),
285 CMD(REPLY_RX_PHY_CMD
),
286 CMD(REPLY_RX_MPDU_CMD
),
287 CMD(BEACON_NOTIFICATION
),
288 CMD(BEACON_TEMPLATE_CMD
),
289 CMD(STATISTICS_NOTIFICATION
),
290 CMD(EOSP_NOTIFICATION
),
291 CMD(REDUCE_TX_POWER_CMD
),
292 CMD(TX_ANT_CONFIGURATION_CMD
),
295 CMD(PROT_OFFLOAD_CONFIG_CMD
),
296 CMD(OFFLOADS_QUERY_CMD
),
297 CMD(REMOTE_WAKE_CONFIG_CMD
),
298 CMD(WOWLAN_PATTERNS
),
299 CMD(WOWLAN_CONFIGURATION
),
300 CMD(WOWLAN_TSC_RSC_PARAM
),
301 CMD(WOWLAN_TKIP_PARAM
),
302 CMD(WOWLAN_KEK_KCK_MATERIAL
),
303 CMD(WOWLAN_GET_STATUSES
),
304 CMD(WOWLAN_TX_POWER_PER_DB
),
305 CMD(NET_DETECT_CONFIG_CMD
),
306 CMD(NET_DETECT_PROFILES_QUERY_CMD
),
307 CMD(NET_DETECT_PROFILES_CMD
),
308 CMD(NET_DETECT_HOTSPOTS_CMD
),
309 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD
),
310 CMD(CARD_STATE_NOTIFICATION
),
311 CMD(MISSED_BEACONS_NOTIFICATION
),
312 CMD(BT_COEX_PRIO_TABLE
),
313 CMD(BT_COEX_PROT_ENV
),
314 CMD(BT_PROFILE_NOTIFICATION
),
316 CMD(MCAST_FILTER_CMD
),
317 CMD(BCAST_FILTER_CMD
),
318 CMD(REPLY_SF_CFG_CMD
),
319 CMD(REPLY_BEACON_FILTERING_CMD
),
320 CMD(REPLY_THERMAL_MNG_BACKOFF
),
321 CMD(MAC_PM_POWER_TABLE
),
323 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION
),
327 /* this forward declaration can avoid to export the function */
328 static void iwl_mvm_async_handlers_wk(struct work_struct
*wk
);
329 static void iwl_mvm_d0i3_exit_work(struct work_struct
*wk
);
331 static u32
calc_min_backoff(struct iwl_trans
*trans
, const struct iwl_cfg
*cfg
)
333 const struct iwl_pwr_tx_backoff
*pwr_tx_backoff
= cfg
->pwr_tx_backoffs
;
338 while (pwr_tx_backoff
->pwr
) {
339 if (trans
->dflt_pwr_limit
>= pwr_tx_backoff
->pwr
)
340 return pwr_tx_backoff
->backoff
;
348 static struct iwl_op_mode
*
349 iwl_op_mode_mvm_start(struct iwl_trans
*trans
, const struct iwl_cfg
*cfg
,
350 const struct iwl_fw
*fw
, struct dentry
*dbgfs_dir
)
352 struct ieee80211_hw
*hw
;
353 struct iwl_op_mode
*op_mode
;
355 struct iwl_trans_config trans_cfg
= {};
356 static const u8 no_reclaim_cmds
[] = {
363 * We use IWL_MVM_STATION_COUNT to check the validity of the station
364 * index all over the driver - check that its value corresponds to the
367 BUILD_BUG_ON(ARRAY_SIZE(mvm
->fw_id_to_mac_id
) != IWL_MVM_STATION_COUNT
);
369 /********************************
370 * 1. Allocating and configuring HW data
371 ********************************/
372 hw
= ieee80211_alloc_hw(sizeof(struct iwl_op_mode
) +
373 sizeof(struct iwl_mvm
),
379 op_mode
->ops
= &iwl_mvm_ops
;
381 mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
382 mvm
->dev
= trans
->dev
;
388 mvm
->restart_fw
= iwlwifi_mod_params
.restart_fw
? -1 : 0;
391 mvm
->first_agg_queue
= 16;
392 mvm
->last_agg_queue
= mvm
->cfg
->base_params
->num_of_queues
- 1;
393 if (mvm
->cfg
->base_params
->num_of_queues
== 16) {
395 mvm
->first_agg_queue
= 12;
397 mvm
->sf_state
= SF_UNINIT
;
399 mutex_init(&mvm
->mutex
);
400 spin_lock_init(&mvm
->async_handlers_lock
);
401 INIT_LIST_HEAD(&mvm
->time_event_list
);
402 INIT_LIST_HEAD(&mvm
->async_handlers_list
);
403 spin_lock_init(&mvm
->time_event_lock
);
405 INIT_WORK(&mvm
->async_handlers_wk
, iwl_mvm_async_handlers_wk
);
406 INIT_WORK(&mvm
->roc_done_wk
, iwl_mvm_roc_done_wk
);
407 INIT_WORK(&mvm
->sta_drained_wk
, iwl_mvm_sta_drained_wk
);
408 INIT_WORK(&mvm
->d0i3_exit_work
, iwl_mvm_d0i3_exit_work
);
410 SET_IEEE80211_DEV(mvm
->hw
, mvm
->trans
->dev
);
413 * Populate the state variables that the transport layer needs
416 trans_cfg
.op_mode
= op_mode
;
417 trans_cfg
.no_reclaim_cmds
= no_reclaim_cmds
;
418 trans_cfg
.n_no_reclaim_cmds
= ARRAY_SIZE(no_reclaim_cmds
);
419 trans_cfg
.rx_buf_size_8k
= iwlwifi_mod_params
.amsdu_size_8K
;
421 if (mvm
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_DW_BC_TABLE
)
422 trans_cfg
.bc_table_dword
= true;
424 if (!iwlwifi_mod_params
.wd_disable
)
425 trans_cfg
.queue_watchdog_timeout
= cfg
->base_params
->wd_timeout
;
427 trans_cfg
.queue_watchdog_timeout
= IWL_WATCHDOG_DISABLED
;
429 trans_cfg
.command_names
= iwl_mvm_cmd_strings
;
431 trans_cfg
.cmd_queue
= IWL_MVM_CMD_QUEUE
;
432 trans_cfg
.cmd_fifo
= IWL_MVM_CMD_FIFO
;
434 snprintf(mvm
->hw
->wiphy
->fw_version
,
435 sizeof(mvm
->hw
->wiphy
->fw_version
),
436 "%s", fw
->fw_version
);
438 /* Configure transport layer */
439 iwl_trans_configure(mvm
->trans
, &trans_cfg
);
441 trans
->rx_mpdu_cmd
= REPLY_RX_MPDU_CMD
;
442 trans
->rx_mpdu_cmd_hdr_size
= sizeof(struct iwl_rx_mpdu_res_start
);
444 /* set up notification wait support */
445 iwl_notification_wait_init(&mvm
->notif_wait
);
448 mvm
->phy_db
= iwl_phy_db_init(trans
);
450 IWL_ERR(mvm
, "Cannot init phy_db\n");
454 IWL_INFO(mvm
, "Detected %s, REV=0x%X\n",
455 mvm
->cfg
->name
, mvm
->trans
->hw_rev
);
457 min_backoff
= calc_min_backoff(trans
, cfg
);
458 iwl_mvm_tt_initialize(mvm
, min_backoff
);
461 * If the NVM exists in an external file,
462 * there is no need to unnecessarily power up the NIC at driver load
464 if (iwlwifi_mod_params
.nvm_file
) {
465 err
= iwl_nvm_init(mvm
);
469 err
= iwl_trans_start_hw(mvm
->trans
);
473 mutex_lock(&mvm
->mutex
);
474 err
= iwl_run_init_mvm_ucode(mvm
, true);
475 iwl_trans_stop_device(trans
);
476 mutex_unlock(&mvm
->mutex
);
477 /* returns 0 if successful, 1 if success but in rfkill */
478 if (err
< 0 && !iwlmvm_mod_params
.init_dbg
) {
479 IWL_ERR(mvm
, "Failed to run INIT ucode: %d\n", err
);
484 scan_size
= sizeof(struct iwl_scan_cmd
) +
485 mvm
->fw
->ucode_capa
.max_probe_length
+
486 (MAX_NUM_SCAN_CHANNELS
* sizeof(struct iwl_scan_channel
));
487 mvm
->scan_cmd
= kmalloc(scan_size
, GFP_KERNEL
);
491 err
= iwl_mvm_mac_setup_register(mvm
);
495 err
= iwl_mvm_dbgfs_register(mvm
, dbgfs_dir
);
499 if (mvm
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT
)
500 mvm
->pm_ops
= &pm_mac_ops
;
502 mvm
->pm_ops
= &pm_legacy_ops
;
504 memset(&mvm
->rx_stats
, 0, sizeof(struct mvm_statistics_rx
));
506 /* rpm starts with a taken ref. only set the appropriate bit here. */
507 set_bit(IWL_MVM_REF_UCODE_DOWN
, mvm
->ref_bitmap
);
512 ieee80211_unregister_hw(mvm
->hw
);
513 iwl_mvm_leds_exit(mvm
);
515 iwl_phy_db_free(mvm
->phy_db
);
516 kfree(mvm
->scan_cmd
);
517 if (!iwlwifi_mod_params
.nvm_file
)
518 iwl_trans_op_mode_leave(trans
);
519 ieee80211_free_hw(mvm
->hw
);
523 static void iwl_op_mode_mvm_stop(struct iwl_op_mode
*op_mode
)
525 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
528 iwl_mvm_leds_exit(mvm
);
530 iwl_mvm_tt_exit(mvm
);
532 ieee80211_unregister_hw(mvm
->hw
);
534 kfree(mvm
->scan_cmd
);
535 kfree(mvm
->mcast_filter_cmd
);
536 mvm
->mcast_filter_cmd
= NULL
;
538 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
539 kfree(mvm
->d3_resume_sram
);
542 iwl_trans_op_mode_leave(mvm
->trans
);
544 iwl_phy_db_free(mvm
->phy_db
);
547 iwl_free_nvm_data(mvm
->nvm_data
);
548 for (i
= 0; i
< NVM_MAX_NUM_SECTIONS
; i
++)
549 kfree(mvm
->nvm_sections
[i
].data
);
551 ieee80211_free_hw(mvm
->hw
);
554 struct iwl_async_handler_entry
{
555 struct list_head list
;
556 struct iwl_rx_cmd_buffer rxb
;
557 int (*fn
)(struct iwl_mvm
*mvm
, struct iwl_rx_cmd_buffer
*rxb
,
558 struct iwl_device_cmd
*cmd
);
561 void iwl_mvm_async_handlers_purge(struct iwl_mvm
*mvm
)
563 struct iwl_async_handler_entry
*entry
, *tmp
;
565 spin_lock_bh(&mvm
->async_handlers_lock
);
566 list_for_each_entry_safe(entry
, tmp
, &mvm
->async_handlers_list
, list
) {
567 iwl_free_rxb(&entry
->rxb
);
568 list_del(&entry
->list
);
571 spin_unlock_bh(&mvm
->async_handlers_lock
);
574 static void iwl_mvm_async_handlers_wk(struct work_struct
*wk
)
576 struct iwl_mvm
*mvm
=
577 container_of(wk
, struct iwl_mvm
, async_handlers_wk
);
578 struct iwl_async_handler_entry
*entry
, *tmp
;
579 struct list_head local_list
;
581 INIT_LIST_HEAD(&local_list
);
583 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
584 mutex_lock(&mvm
->mutex
);
587 * Sync with Rx path with a lock. Remove all the entries from this list,
588 * add them to a local one (lock free), and then handle them.
590 spin_lock_bh(&mvm
->async_handlers_lock
);
591 list_splice_init(&mvm
->async_handlers_list
, &local_list
);
592 spin_unlock_bh(&mvm
->async_handlers_lock
);
594 list_for_each_entry_safe(entry
, tmp
, &local_list
, list
) {
595 if (entry
->fn(mvm
, &entry
->rxb
, NULL
))
597 "returned value from ASYNC handlers are ignored\n");
598 iwl_free_rxb(&entry
->rxb
);
599 list_del(&entry
->list
);
602 mutex_unlock(&mvm
->mutex
);
605 static int iwl_mvm_rx_dispatch(struct iwl_op_mode
*op_mode
,
606 struct iwl_rx_cmd_buffer
*rxb
,
607 struct iwl_device_cmd
*cmd
)
609 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
610 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
614 * Do the notification wait before RX handlers so
615 * even if the RX handler consumes the RXB we have
616 * access to it in the notification wait entry.
618 iwl_notification_wait_notify(&mvm
->notif_wait
, pkt
);
620 for (i
= 0; i
< ARRAY_SIZE(iwl_mvm_rx_handlers
); i
++) {
621 const struct iwl_rx_handlers
*rx_h
= &iwl_mvm_rx_handlers
[i
];
622 struct iwl_async_handler_entry
*entry
;
624 if (rx_h
->cmd_id
!= pkt
->hdr
.cmd
)
628 return rx_h
->fn(mvm
, rxb
, cmd
);
630 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
631 /* we can't do much... */
635 entry
->rxb
._page
= rxb_steal_page(rxb
);
636 entry
->rxb
._offset
= rxb
->_offset
;
637 entry
->rxb
._rx_page_order
= rxb
->_rx_page_order
;
638 entry
->fn
= rx_h
->fn
;
639 spin_lock(&mvm
->async_handlers_lock
);
640 list_add_tail(&entry
->list
, &mvm
->async_handlers_list
);
641 spin_unlock(&mvm
->async_handlers_lock
);
642 schedule_work(&mvm
->async_handlers_wk
);
649 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode
*op_mode
, int queue
)
651 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
652 int mq
= mvm
->queue_to_mac80211
[queue
];
654 if (WARN_ON_ONCE(mq
== IWL_INVALID_MAC80211_QUEUE
))
657 if (atomic_inc_return(&mvm
->queue_stop_count
[mq
]) > 1) {
658 IWL_DEBUG_TX_QUEUES(mvm
,
659 "queue %d (mac80211 %d) already stopped\n",
664 set_bit(mq
, &mvm
->transport_queue_stop
);
665 ieee80211_stop_queue(mvm
->hw
, mq
);
668 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode
*op_mode
, int queue
)
670 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
671 int mq
= mvm
->queue_to_mac80211
[queue
];
673 if (WARN_ON_ONCE(mq
== IWL_INVALID_MAC80211_QUEUE
))
676 if (atomic_dec_return(&mvm
->queue_stop_count
[mq
]) > 0) {
677 IWL_DEBUG_TX_QUEUES(mvm
,
678 "queue %d (mac80211 %d) already awake\n",
683 clear_bit(mq
, &mvm
->transport_queue_stop
);
685 ieee80211_wake_queue(mvm
->hw
, mq
);
688 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm
*mvm
, bool state
)
691 set_bit(IWL_MVM_STATUS_HW_CTKILL
, &mvm
->status
);
693 clear_bit(IWL_MVM_STATUS_HW_CTKILL
, &mvm
->status
);
695 wiphy_rfkill_set_hw_state(mvm
->hw
->wiphy
, iwl_mvm_is_radio_killed(mvm
));
698 static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode
*op_mode
, bool state
)
700 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
703 set_bit(IWL_MVM_STATUS_HW_RFKILL
, &mvm
->status
);
705 clear_bit(IWL_MVM_STATUS_HW_RFKILL
, &mvm
->status
);
707 if (state
&& mvm
->cur_ucode
!= IWL_UCODE_INIT
)
708 iwl_trans_stop_device(mvm
->trans
);
709 wiphy_rfkill_set_hw_state(mvm
->hw
->wiphy
, iwl_mvm_is_radio_killed(mvm
));
712 static void iwl_mvm_free_skb(struct iwl_op_mode
*op_mode
, struct sk_buff
*skb
)
714 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
715 struct ieee80211_tx_info
*info
;
717 info
= IEEE80211_SKB_CB(skb
);
718 iwl_trans_free_tx_cmd(mvm
->trans
, info
->driver_data
[1]);
719 ieee80211_free_txskb(mvm
->hw
, skb
);
722 struct iwl_mvm_reprobe
{
724 struct work_struct work
;
727 static void iwl_mvm_reprobe_wk(struct work_struct
*wk
)
729 struct iwl_mvm_reprobe
*reprobe
;
731 reprobe
= container_of(wk
, struct iwl_mvm_reprobe
, work
);
732 if (device_reprobe(reprobe
->dev
))
733 dev_err(reprobe
->dev
, "reprobe failed!\n");
735 module_put(THIS_MODULE
);
738 static void iwl_mvm_nic_restart(struct iwl_mvm
*mvm
)
740 iwl_abort_notification_waits(&mvm
->notif_wait
);
743 * This is a bit racy, but worst case we tell mac80211 about
744 * a stopped/aborted scan when that was already done which
745 * is not a problem. It is necessary to abort any os scan
746 * here because mac80211 requires having the scan cleared
748 * We'll reset the scan_status to NONE in restart cleanup in
749 * the next start() call from mac80211. If restart isn't called
750 * (no fw restart) scan status will stay busy.
752 switch (mvm
->scan_status
) {
753 case IWL_MVM_SCAN_NONE
:
755 case IWL_MVM_SCAN_OS
:
756 ieee80211_scan_completed(mvm
->hw
, true);
758 case IWL_MVM_SCAN_SCHED
:
759 /* Sched scan will be restarted by mac80211 in restart_hw. */
760 if (!mvm
->restart_fw
)
761 ieee80211_sched_scan_stopped(mvm
->hw
);
766 * If we're restarting already, don't cycle restarts.
767 * If INIT fw asserted, it will likely fail again.
768 * If WoWLAN fw asserted, don't restart either, mac80211
769 * can't recover this since we're already half suspended.
771 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
772 struct iwl_mvm_reprobe
*reprobe
;
775 "Firmware error during reconfiguration - reprobe!\n");
778 * get a module reference to avoid doing this while unloading
779 * anyway and to avoid scheduling a work with code that's
782 if (!try_module_get(THIS_MODULE
)) {
783 IWL_ERR(mvm
, "Module is being unloaded - abort\n");
787 reprobe
= kzalloc(sizeof(*reprobe
), GFP_ATOMIC
);
789 module_put(THIS_MODULE
);
792 reprobe
->dev
= mvm
->trans
->dev
;
793 INIT_WORK(&reprobe
->work
, iwl_mvm_reprobe_wk
);
794 schedule_work(&reprobe
->work
);
795 } else if (mvm
->cur_ucode
== IWL_UCODE_REGULAR
&& mvm
->restart_fw
) {
796 /* don't let the transport/FW power down */
797 iwl_mvm_ref(mvm
, IWL_MVM_REF_UCODE_DOWN
);
799 if (mvm
->restart_fw
> 0)
801 ieee80211_restart_hw(mvm
->hw
);
805 static void iwl_mvm_nic_error(struct iwl_op_mode
*op_mode
)
807 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
809 iwl_mvm_dump_nic_error_log(mvm
);
810 if (!mvm
->restart_fw
)
811 iwl_mvm_dump_sram(mvm
);
813 iwl_mvm_nic_restart(mvm
);
816 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode
*op_mode
)
818 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
821 iwl_mvm_nic_restart(mvm
);
824 struct iwl_d0i3_iter_data
{
830 static void iwl_mvm_enter_d0i3_iterator(void *_data
, u8
*mac
,
831 struct ieee80211_vif
*vif
)
833 struct iwl_d0i3_iter_data
*data
= _data
;
834 struct iwl_mvm
*mvm
= data
->mvm
;
835 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
836 u32 flags
= CMD_ASYNC
| CMD_HIGH_PRIO
| CMD_SEND_IN_IDLE
;
838 IWL_DEBUG_RPM(mvm
, "entering D0i3 - vif %pM\n", vif
->addr
);
839 if (vif
->type
!= NL80211_IFTYPE_STATION
||
840 !vif
->bss_conf
.assoc
)
843 iwl_mvm_update_d0i3_power_mode(mvm
, vif
, true, flags
);
846 * on init/association, mvm already configures POWER_TABLE_CMD
847 * and REPLY_MCAST_FILTER_CMD, so currently don't
848 * reconfigure them (we might want to use different
849 * params later on, though).
851 data
->ap_sta_id
= mvmvif
->ap_sta_id
;
855 static int iwl_mvm_enter_d0i3(struct iwl_op_mode
*op_mode
)
857 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
858 u32 flags
= CMD_ASYNC
| CMD_HIGH_PRIO
| CMD_SEND_IN_IDLE
;
860 struct iwl_d0i3_iter_data d0i3_iter_data
= {
863 struct iwl_wowlan_config_cmd wowlan_config_cmd
= {
864 .wakeup_filter
= cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME
|
865 IWL_WOWLAN_WAKEUP_BEACON_MISS
|
866 IWL_WOWLAN_WAKEUP_LINK_CHANGE
|
867 IWL_WOWLAN_WAKEUP_BCN_FILTERING
),
869 struct iwl_d3_manager_config d3_cfg_cmd
= {
870 .min_sleep_time
= cpu_to_le32(1000),
873 IWL_DEBUG_RPM(mvm
, "MVM entering D0i3\n");
875 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
876 IEEE80211_IFACE_ITER_NORMAL
,
877 iwl_mvm_enter_d0i3_iterator
,
879 if (d0i3_iter_data
.vif_count
== 1) {
880 mvm
->d0i3_ap_sta_id
= d0i3_iter_data
.ap_sta_id
;
882 WARN_ON_ONCE(d0i3_iter_data
.vif_count
> 1);
883 mvm
->d0i3_ap_sta_id
= IWL_MVM_STATION_COUNT
;
886 ret
= iwl_mvm_send_cmd_pdu(mvm
, WOWLAN_CONFIGURATION
, flags
,
887 sizeof(wowlan_config_cmd
),
892 return iwl_mvm_send_cmd_pdu(mvm
, D3_CONFIG_CMD
,
893 flags
| CMD_MAKE_TRANS_IDLE
,
894 sizeof(d3_cfg_cmd
), &d3_cfg_cmd
);
897 static void iwl_mvm_exit_d0i3_iterator(void *_data
, u8
*mac
,
898 struct ieee80211_vif
*vif
)
900 struct iwl_mvm
*mvm
= _data
;
901 u32 flags
= CMD_ASYNC
| CMD_HIGH_PRIO
;
903 IWL_DEBUG_RPM(mvm
, "exiting D0i3 - vif %pM\n", vif
->addr
);
904 if (vif
->type
!= NL80211_IFTYPE_STATION
||
905 !vif
->bss_conf
.assoc
)
908 iwl_mvm_update_d0i3_power_mode(mvm
, vif
, false, flags
);
911 static void iwl_mvm_d0i3_disconnect_iter(void *data
, u8
*mac
,
912 struct ieee80211_vif
*vif
)
914 struct iwl_mvm
*mvm
= data
;
915 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
917 if (vif
->type
== NL80211_IFTYPE_STATION
&& vif
->bss_conf
.assoc
&&
918 mvm
->d0i3_ap_sta_id
== mvmvif
->ap_sta_id
)
919 ieee80211_connection_loss(vif
);
922 static void iwl_mvm_d0i3_exit_work(struct work_struct
*wk
)
924 struct iwl_mvm
*mvm
= container_of(wk
, struct iwl_mvm
, d0i3_exit_work
);
925 struct iwl_host_cmd get_status_cmd
= {
926 .id
= WOWLAN_GET_STATUSES
,
927 .flags
= CMD_SYNC
| CMD_HIGH_PRIO
| CMD_WANT_SKB
,
929 struct iwl_wowlan_status_v6
*status
;
931 u32 disconnection_reasons
, wakeup_reasons
;
933 mutex_lock(&mvm
->mutex
);
934 ret
= iwl_mvm_send_cmd(mvm
, &get_status_cmd
);
938 if (!get_status_cmd
.resp_pkt
)
941 status
= (void *)get_status_cmd
.resp_pkt
->data
;
942 wakeup_reasons
= le32_to_cpu(status
->wakeup_reasons
);
944 IWL_DEBUG_RPM(mvm
, "wakeup reasons: 0x%x\n", wakeup_reasons
);
946 disconnection_reasons
=
947 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON
|
948 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH
;
949 if (wakeup_reasons
& disconnection_reasons
)
950 ieee80211_iterate_active_interfaces(
951 mvm
->hw
, IEEE80211_IFACE_ITER_NORMAL
,
952 iwl_mvm_d0i3_disconnect_iter
, mvm
);
954 iwl_free_resp(&get_status_cmd
);
956 mutex_unlock(&mvm
->mutex
);
959 static int iwl_mvm_exit_d0i3(struct iwl_op_mode
*op_mode
)
961 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
962 u32 flags
= CMD_ASYNC
| CMD_HIGH_PRIO
| CMD_SEND_IN_IDLE
|
966 IWL_DEBUG_RPM(mvm
, "MVM exiting D0i3\n");
968 ret
= iwl_mvm_send_cmd_pdu(mvm
, D0I3_END_CMD
, flags
, 0, NULL
);
972 ieee80211_iterate_active_interfaces_atomic(mvm
->hw
,
973 IEEE80211_IFACE_ITER_NORMAL
,
974 iwl_mvm_exit_d0i3_iterator
,
977 schedule_work(&mvm
->d0i3_exit_work
);
981 static const struct iwl_op_mode_ops iwl_mvm_ops
= {
982 .start
= iwl_op_mode_mvm_start
,
983 .stop
= iwl_op_mode_mvm_stop
,
984 .rx
= iwl_mvm_rx_dispatch
,
985 .queue_full
= iwl_mvm_stop_sw_queue
,
986 .queue_not_full
= iwl_mvm_wake_sw_queue
,
987 .hw_rf_kill
= iwl_mvm_set_hw_rfkill_state
,
988 .free_skb
= iwl_mvm_free_skb
,
989 .nic_error
= iwl_mvm_nic_error
,
990 .cmd_queue_full
= iwl_mvm_cmd_queue_full
,
991 .nic_config
= iwl_mvm_nic_config
,
992 .enter_d0i3
= iwl_mvm_enter_d0i3
,
993 .exit_d0i3
= iwl_mvm_exit_d0i3
,