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
, false),
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
),
294 CMD(PROT_OFFLOAD_CONFIG_CMD
),
295 CMD(OFFLOADS_QUERY_CMD
),
296 CMD(REMOTE_WAKE_CONFIG_CMD
),
297 CMD(WOWLAN_PATTERNS
),
298 CMD(WOWLAN_CONFIGURATION
),
299 CMD(WOWLAN_TSC_RSC_PARAM
),
300 CMD(WOWLAN_TKIP_PARAM
),
301 CMD(WOWLAN_KEK_KCK_MATERIAL
),
302 CMD(WOWLAN_GET_STATUSES
),
303 CMD(WOWLAN_TX_POWER_PER_DB
),
304 CMD(NET_DETECT_CONFIG_CMD
),
305 CMD(NET_DETECT_PROFILES_QUERY_CMD
),
306 CMD(NET_DETECT_PROFILES_CMD
),
307 CMD(NET_DETECT_HOTSPOTS_CMD
),
308 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD
),
309 CMD(CARD_STATE_NOTIFICATION
),
310 CMD(MISSED_BEACONS_NOTIFICATION
),
311 CMD(BT_COEX_PRIO_TABLE
),
312 CMD(BT_COEX_PROT_ENV
),
313 CMD(BT_PROFILE_NOTIFICATION
),
315 CMD(MCAST_FILTER_CMD
),
316 CMD(BCAST_FILTER_CMD
),
317 CMD(REPLY_SF_CFG_CMD
),
318 CMD(REPLY_BEACON_FILTERING_CMD
),
319 CMD(REPLY_THERMAL_MNG_BACKOFF
),
320 CMD(MAC_PM_POWER_TABLE
),
322 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION
),
326 /* this forward declaration can avoid to export the function */
327 static void iwl_mvm_async_handlers_wk(struct work_struct
*wk
);
329 static u32
calc_min_backoff(struct iwl_trans
*trans
, const struct iwl_cfg
*cfg
)
331 const struct iwl_pwr_tx_backoff
*pwr_tx_backoff
= cfg
->pwr_tx_backoffs
;
336 while (pwr_tx_backoff
->pwr
) {
337 if (trans
->dflt_pwr_limit
>= pwr_tx_backoff
->pwr
)
338 return pwr_tx_backoff
->backoff
;
346 static struct iwl_op_mode
*
347 iwl_op_mode_mvm_start(struct iwl_trans
*trans
, const struct iwl_cfg
*cfg
,
348 const struct iwl_fw
*fw
, struct dentry
*dbgfs_dir
)
350 struct ieee80211_hw
*hw
;
351 struct iwl_op_mode
*op_mode
;
353 struct iwl_trans_config trans_cfg
= {};
354 static const u8 no_reclaim_cmds
[] = {
361 * We use IWL_MVM_STATION_COUNT to check the validity of the station
362 * index all over the driver - check that its value corresponds to the
365 BUILD_BUG_ON(ARRAY_SIZE(mvm
->fw_id_to_mac_id
) != IWL_MVM_STATION_COUNT
);
367 /********************************
368 * 1. Allocating and configuring HW data
369 ********************************/
370 hw
= ieee80211_alloc_hw(sizeof(struct iwl_op_mode
) +
371 sizeof(struct iwl_mvm
),
377 op_mode
->ops
= &iwl_mvm_ops
;
379 mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
380 mvm
->dev
= trans
->dev
;
386 mvm
->restart_fw
= iwlwifi_mod_params
.restart_fw
? -1 : 0;
389 mvm
->first_agg_queue
= 16;
390 mvm
->last_agg_queue
= mvm
->cfg
->base_params
->num_of_queues
- 1;
391 if (mvm
->cfg
->base_params
->num_of_queues
== 16) {
393 mvm
->first_agg_queue
= 12;
395 mvm
->sf_state
= SF_UNINIT
;
397 mutex_init(&mvm
->mutex
);
398 spin_lock_init(&mvm
->async_handlers_lock
);
399 INIT_LIST_HEAD(&mvm
->time_event_list
);
400 INIT_LIST_HEAD(&mvm
->async_handlers_list
);
401 spin_lock_init(&mvm
->time_event_lock
);
403 INIT_WORK(&mvm
->async_handlers_wk
, iwl_mvm_async_handlers_wk
);
404 INIT_WORK(&mvm
->roc_done_wk
, iwl_mvm_roc_done_wk
);
405 INIT_WORK(&mvm
->sta_drained_wk
, iwl_mvm_sta_drained_wk
);
407 SET_IEEE80211_DEV(mvm
->hw
, mvm
->trans
->dev
);
410 * Populate the state variables that the transport layer needs
413 trans_cfg
.op_mode
= op_mode
;
414 trans_cfg
.no_reclaim_cmds
= no_reclaim_cmds
;
415 trans_cfg
.n_no_reclaim_cmds
= ARRAY_SIZE(no_reclaim_cmds
);
416 trans_cfg
.rx_buf_size_8k
= iwlwifi_mod_params
.amsdu_size_8K
;
418 if (mvm
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_DW_BC_TABLE
)
419 trans_cfg
.bc_table_dword
= true;
421 if (!iwlwifi_mod_params
.wd_disable
)
422 trans_cfg
.queue_watchdog_timeout
= cfg
->base_params
->wd_timeout
;
424 trans_cfg
.queue_watchdog_timeout
= IWL_WATCHDOG_DISABLED
;
426 trans_cfg
.command_names
= iwl_mvm_cmd_strings
;
428 trans_cfg
.cmd_queue
= IWL_MVM_CMD_QUEUE
;
429 trans_cfg
.cmd_fifo
= IWL_MVM_CMD_FIFO
;
431 snprintf(mvm
->hw
->wiphy
->fw_version
,
432 sizeof(mvm
->hw
->wiphy
->fw_version
),
433 "%s", fw
->fw_version
);
435 /* Configure transport layer */
436 iwl_trans_configure(mvm
->trans
, &trans_cfg
);
438 trans
->rx_mpdu_cmd
= REPLY_RX_MPDU_CMD
;
439 trans
->rx_mpdu_cmd_hdr_size
= sizeof(struct iwl_rx_mpdu_res_start
);
441 /* set up notification wait support */
442 iwl_notification_wait_init(&mvm
->notif_wait
);
445 mvm
->phy_db
= iwl_phy_db_init(trans
);
447 IWL_ERR(mvm
, "Cannot init phy_db\n");
451 IWL_INFO(mvm
, "Detected %s, REV=0x%X\n",
452 mvm
->cfg
->name
, mvm
->trans
->hw_rev
);
454 min_backoff
= calc_min_backoff(trans
, cfg
);
455 iwl_mvm_tt_initialize(mvm
, min_backoff
);
458 * If the NVM exists in an external file,
459 * there is no need to unnecessarily power up the NIC at driver load
461 if (iwlwifi_mod_params
.nvm_file
) {
462 err
= iwl_nvm_init(mvm
);
466 err
= iwl_trans_start_hw(mvm
->trans
);
470 mutex_lock(&mvm
->mutex
);
471 err
= iwl_run_init_mvm_ucode(mvm
, true);
472 iwl_trans_stop_device(trans
);
473 mutex_unlock(&mvm
->mutex
);
474 /* returns 0 if successful, 1 if success but in rfkill */
475 if (err
< 0 && !iwlmvm_mod_params
.init_dbg
) {
476 IWL_ERR(mvm
, "Failed to run INIT ucode: %d\n", err
);
481 scan_size
= sizeof(struct iwl_scan_cmd
) +
482 mvm
->fw
->ucode_capa
.max_probe_length
+
483 (MAX_NUM_SCAN_CHANNELS
* sizeof(struct iwl_scan_channel
));
484 mvm
->scan_cmd
= kmalloc(scan_size
, GFP_KERNEL
);
488 err
= iwl_mvm_mac_setup_register(mvm
);
492 err
= iwl_mvm_dbgfs_register(mvm
, dbgfs_dir
);
496 if (mvm
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT
)
497 mvm
->pm_ops
= &pm_mac_ops
;
499 mvm
->pm_ops
= &pm_legacy_ops
;
501 memset(&mvm
->rx_stats
, 0, sizeof(struct mvm_statistics_rx
));
506 ieee80211_unregister_hw(mvm
->hw
);
507 iwl_mvm_leds_exit(mvm
);
509 iwl_phy_db_free(mvm
->phy_db
);
510 kfree(mvm
->scan_cmd
);
511 if (!iwlwifi_mod_params
.nvm_file
)
512 iwl_trans_op_mode_leave(trans
);
513 ieee80211_free_hw(mvm
->hw
);
517 static void iwl_op_mode_mvm_stop(struct iwl_op_mode
*op_mode
)
519 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
522 iwl_mvm_leds_exit(mvm
);
524 iwl_mvm_tt_exit(mvm
);
526 ieee80211_unregister_hw(mvm
->hw
);
528 kfree(mvm
->scan_cmd
);
529 kfree(mvm
->mcast_filter_cmd
);
530 mvm
->mcast_filter_cmd
= NULL
;
532 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
533 kfree(mvm
->d3_resume_sram
);
536 iwl_trans_op_mode_leave(mvm
->trans
);
538 iwl_phy_db_free(mvm
->phy_db
);
541 iwl_free_nvm_data(mvm
->nvm_data
);
542 for (i
= 0; i
< NVM_MAX_NUM_SECTIONS
; i
++)
543 kfree(mvm
->nvm_sections
[i
].data
);
545 ieee80211_free_hw(mvm
->hw
);
548 struct iwl_async_handler_entry
{
549 struct list_head list
;
550 struct iwl_rx_cmd_buffer rxb
;
551 int (*fn
)(struct iwl_mvm
*mvm
, struct iwl_rx_cmd_buffer
*rxb
,
552 struct iwl_device_cmd
*cmd
);
555 void iwl_mvm_async_handlers_purge(struct iwl_mvm
*mvm
)
557 struct iwl_async_handler_entry
*entry
, *tmp
;
559 spin_lock_bh(&mvm
->async_handlers_lock
);
560 list_for_each_entry_safe(entry
, tmp
, &mvm
->async_handlers_list
, list
) {
561 iwl_free_rxb(&entry
->rxb
);
562 list_del(&entry
->list
);
565 spin_unlock_bh(&mvm
->async_handlers_lock
);
568 static void iwl_mvm_async_handlers_wk(struct work_struct
*wk
)
570 struct iwl_mvm
*mvm
=
571 container_of(wk
, struct iwl_mvm
, async_handlers_wk
);
572 struct iwl_async_handler_entry
*entry
, *tmp
;
573 struct list_head local_list
;
575 INIT_LIST_HEAD(&local_list
);
577 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
578 mutex_lock(&mvm
->mutex
);
581 * Sync with Rx path with a lock. Remove all the entries from this list,
582 * add them to a local one (lock free), and then handle them.
584 spin_lock_bh(&mvm
->async_handlers_lock
);
585 list_splice_init(&mvm
->async_handlers_list
, &local_list
);
586 spin_unlock_bh(&mvm
->async_handlers_lock
);
588 list_for_each_entry_safe(entry
, tmp
, &local_list
, list
) {
589 if (entry
->fn(mvm
, &entry
->rxb
, NULL
))
591 "returned value from ASYNC handlers are ignored\n");
592 iwl_free_rxb(&entry
->rxb
);
593 list_del(&entry
->list
);
596 mutex_unlock(&mvm
->mutex
);
599 static int iwl_mvm_rx_dispatch(struct iwl_op_mode
*op_mode
,
600 struct iwl_rx_cmd_buffer
*rxb
,
601 struct iwl_device_cmd
*cmd
)
603 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
604 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
608 * Do the notification wait before RX handlers so
609 * even if the RX handler consumes the RXB we have
610 * access to it in the notification wait entry.
612 iwl_notification_wait_notify(&mvm
->notif_wait
, pkt
);
614 for (i
= 0; i
< ARRAY_SIZE(iwl_mvm_rx_handlers
); i
++) {
615 const struct iwl_rx_handlers
*rx_h
= &iwl_mvm_rx_handlers
[i
];
616 struct iwl_async_handler_entry
*entry
;
618 if (rx_h
->cmd_id
!= pkt
->hdr
.cmd
)
622 return rx_h
->fn(mvm
, rxb
, cmd
);
624 entry
= kzalloc(sizeof(*entry
), GFP_ATOMIC
);
625 /* we can't do much... */
629 entry
->rxb
._page
= rxb_steal_page(rxb
);
630 entry
->rxb
._offset
= rxb
->_offset
;
631 entry
->rxb
._rx_page_order
= rxb
->_rx_page_order
;
632 entry
->fn
= rx_h
->fn
;
633 spin_lock(&mvm
->async_handlers_lock
);
634 list_add_tail(&entry
->list
, &mvm
->async_handlers_list
);
635 spin_unlock(&mvm
->async_handlers_lock
);
636 schedule_work(&mvm
->async_handlers_wk
);
643 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode
*op_mode
, int queue
)
645 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
646 int mq
= mvm
->queue_to_mac80211
[queue
];
648 if (WARN_ON_ONCE(mq
== IWL_INVALID_MAC80211_QUEUE
))
651 if (atomic_inc_return(&mvm
->queue_stop_count
[mq
]) > 1) {
652 IWL_DEBUG_TX_QUEUES(mvm
,
653 "queue %d (mac80211 %d) already stopped\n",
658 set_bit(mq
, &mvm
->transport_queue_stop
);
659 ieee80211_stop_queue(mvm
->hw
, mq
);
662 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode
*op_mode
, int queue
)
664 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
665 int mq
= mvm
->queue_to_mac80211
[queue
];
667 if (WARN_ON_ONCE(mq
== IWL_INVALID_MAC80211_QUEUE
))
670 if (atomic_dec_return(&mvm
->queue_stop_count
[mq
]) > 0) {
671 IWL_DEBUG_TX_QUEUES(mvm
,
672 "queue %d (mac80211 %d) already awake\n",
677 clear_bit(mq
, &mvm
->transport_queue_stop
);
679 ieee80211_wake_queue(mvm
->hw
, mq
);
682 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm
*mvm
, bool state
)
685 set_bit(IWL_MVM_STATUS_HW_CTKILL
, &mvm
->status
);
687 clear_bit(IWL_MVM_STATUS_HW_CTKILL
, &mvm
->status
);
689 wiphy_rfkill_set_hw_state(mvm
->hw
->wiphy
, iwl_mvm_is_radio_killed(mvm
));
692 static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode
*op_mode
, bool state
)
694 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
697 set_bit(IWL_MVM_STATUS_HW_RFKILL
, &mvm
->status
);
699 clear_bit(IWL_MVM_STATUS_HW_RFKILL
, &mvm
->status
);
701 if (state
&& mvm
->cur_ucode
!= IWL_UCODE_INIT
)
702 iwl_trans_stop_device(mvm
->trans
);
703 wiphy_rfkill_set_hw_state(mvm
->hw
->wiphy
, iwl_mvm_is_radio_killed(mvm
));
706 static void iwl_mvm_free_skb(struct iwl_op_mode
*op_mode
, struct sk_buff
*skb
)
708 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
709 struct ieee80211_tx_info
*info
;
711 info
= IEEE80211_SKB_CB(skb
);
712 iwl_trans_free_tx_cmd(mvm
->trans
, info
->driver_data
[1]);
713 ieee80211_free_txskb(mvm
->hw
, skb
);
716 struct iwl_mvm_reprobe
{
718 struct work_struct work
;
721 static void iwl_mvm_reprobe_wk(struct work_struct
*wk
)
723 struct iwl_mvm_reprobe
*reprobe
;
725 reprobe
= container_of(wk
, struct iwl_mvm_reprobe
, work
);
726 if (device_reprobe(reprobe
->dev
))
727 dev_err(reprobe
->dev
, "reprobe failed!\n");
729 module_put(THIS_MODULE
);
732 static void iwl_mvm_nic_restart(struct iwl_mvm
*mvm
)
734 iwl_abort_notification_waits(&mvm
->notif_wait
);
737 * This is a bit racy, but worst case we tell mac80211 about
738 * a stopped/aborted scan when that was already done which
739 * is not a problem. It is necessary to abort any os scan
740 * here because mac80211 requires having the scan cleared
742 * We'll reset the scan_status to NONE in restart cleanup in
743 * the next start() call from mac80211. If restart isn't called
744 * (no fw restart) scan status will stay busy.
746 switch (mvm
->scan_status
) {
747 case IWL_MVM_SCAN_NONE
:
749 case IWL_MVM_SCAN_OS
:
750 ieee80211_scan_completed(mvm
->hw
, true);
752 case IWL_MVM_SCAN_SCHED
:
753 /* Sched scan will be restarted by mac80211 in restart_hw. */
754 if (!mvm
->restart_fw
)
755 ieee80211_sched_scan_stopped(mvm
->hw
);
760 * If we're restarting already, don't cycle restarts.
761 * If INIT fw asserted, it will likely fail again.
762 * If WoWLAN fw asserted, don't restart either, mac80211
763 * can't recover this since we're already half suspended.
765 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
766 struct iwl_mvm_reprobe
*reprobe
;
769 "Firmware error during reconfiguration - reprobe!\n");
772 * get a module reference to avoid doing this while unloading
773 * anyway and to avoid scheduling a work with code that's
776 if (!try_module_get(THIS_MODULE
)) {
777 IWL_ERR(mvm
, "Module is being unloaded - abort\n");
781 reprobe
= kzalloc(sizeof(*reprobe
), GFP_ATOMIC
);
783 module_put(THIS_MODULE
);
786 reprobe
->dev
= mvm
->trans
->dev
;
787 INIT_WORK(&reprobe
->work
, iwl_mvm_reprobe_wk
);
788 schedule_work(&reprobe
->work
);
789 } else if (mvm
->cur_ucode
== IWL_UCODE_REGULAR
&& mvm
->restart_fw
) {
790 if (mvm
->restart_fw
> 0)
792 ieee80211_restart_hw(mvm
->hw
);
796 static void iwl_mvm_nic_error(struct iwl_op_mode
*op_mode
)
798 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
800 iwl_mvm_dump_nic_error_log(mvm
);
801 if (!mvm
->restart_fw
)
802 iwl_mvm_dump_sram(mvm
);
804 iwl_mvm_nic_restart(mvm
);
807 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode
*op_mode
)
809 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
812 iwl_mvm_nic_restart(mvm
);
815 static int iwl_mvm_enter_d0i3(struct iwl_op_mode
*op_mode
)
817 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
819 IWL_DEBUG_RPM(mvm
, "MVM entering D0i3\n");
823 static int iwl_mvm_exit_d0i3(struct iwl_op_mode
*op_mode
)
825 struct iwl_mvm
*mvm
= IWL_OP_MODE_GET_MVM(op_mode
);
827 IWL_DEBUG_RPM(mvm
, "MVM exiting D0i3\n");
831 static const struct iwl_op_mode_ops iwl_mvm_ops
= {
832 .start
= iwl_op_mode_mvm_start
,
833 .stop
= iwl_op_mode_mvm_stop
,
834 .rx
= iwl_mvm_rx_dispatch
,
835 .queue_full
= iwl_mvm_stop_sw_queue
,
836 .queue_not_full
= iwl_mvm_wake_sw_queue
,
837 .hw_rf_kill
= iwl_mvm_set_hw_rfkill_state
,
838 .free_skb
= iwl_mvm_free_skb
,
839 .nic_error
= iwl_mvm_nic_error
,
840 .cmd_queue_full
= iwl_mvm_cmd_queue_full
,
841 .nic_config
= iwl_mvm_nic_config
,
842 .enter_d0i3
= iwl_mvm_enter_d0i3
,
843 .exit_d0i3
= iwl_mvm_exit_d0i3
,