projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
iwlwifi: move under intel vendor directory
[deliverable/linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / ops.c
1 /******************************************************************************
2 *
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.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 *
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.
14 *
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.
19 *
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,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
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
47 * distribution.
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.
51 *
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.
63 *
64 *****************************************************************************/
65 #include <linux/module.h>
66 #include <linux/vmalloc.h>
67 #include <net/mac80211.h>
68
69 #include "iwl-notif-wait.h"
70 #include "iwl-trans.h"
71 #include "iwl-op-mode.h"
72 #include "iwl-fw.h"
73 #include "iwl-debug.h"
74 #include "iwl-drv.h"
75 #include "iwl-modparams.h"
76 #include "mvm.h"
77 #include "iwl-phy-db.h"
78 #include "iwl-eeprom-parse.h"
79 #include "iwl-csr.h"
80 #include "iwl-io.h"
81 #include "iwl-prph.h"
82 #include "rs.h"
83 #include "fw-api-scan.h"
84 #include "time-event.h"
85
86 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
88 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
89 MODULE_LICENSE("GPL");
90
91 static const struct iwl_op_mode_ops iwl_mvm_ops;
92 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
93
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 */
98 };
99
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,
107 bool, S_IRUGO);
108 MODULE_PARM_DESC(tfd_q_hang_detect,
109 "TFD queues hang detection (default: true");
110
111 /*
112 * module init and exit functions
113 */
114 static int __init iwl_mvm_init(void)
115 {
116 int ret;
117
118 ret = iwl_mvm_rate_control_register();
119 if (ret) {
120 pr_err("Unable to register rate control algorithm: %d\n", ret);
121 return ret;
122 }
123
124 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
125
126 if (ret) {
127 pr_err("Unable to register MVM op_mode: %d\n", ret);
128 iwl_mvm_rate_control_unregister();
129 }
130
131 return ret;
132 }
133 module_init(iwl_mvm_init);
134
135 static void __exit iwl_mvm_exit(void)
136 {
137 iwl_opmode_deregister("iwlmvm");
138 iwl_mvm_rate_control_unregister();
139 }
140 module_exit(iwl_mvm_exit);
141
142 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
143 {
144 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
145 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
146 u32 reg_val = 0;
147 u32 phy_config = iwl_mvm_get_phy_config(mvm);
148
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;
155
156 /* SKU control */
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;
161
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;
166
167 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
168 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
169
170 /*
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.
176 */
177 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
178 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
179
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,
188 reg_val);
189
190 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
191 radio_cfg_step, radio_cfg_dash);
192
193 /*
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.
197 */
198 if (!mvm->trans->cfg->apmg_not_supported)
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);
202 }
203
204 struct iwl_rx_handlers {
205 u16 cmd_id;
206 bool async;
207 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
208 };
209
210 #define RX_HANDLER(_cmd_id, _fn, _async) \
211 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
212 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _async) \
213 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .async = _async }
214
215 /*
216 * Handlers for fw notifications
217 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
218 * This list should be in order of frequency for performance purposes.
219 *
220 * The handler can be SYNC - this means that it will be called in the Rx path
221 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
222 * only in this case!), it should be set as ASYNC. In that case, it will be
223 * called from a worker with mvm->mutex held.
224 */
225 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
226 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
227 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
228
229 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
230 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true),
231 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
232 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
233 iwl_mvm_rx_ant_coupling_notif, true),
234
235 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
236 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, true),
237
238 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
239
240 RX_HANDLER(SCAN_ITERATION_COMPLETE,
241 iwl_mvm_rx_lmac_scan_iter_complete_notif, false),
242 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
243 iwl_mvm_rx_lmac_scan_complete_notif, true),
244 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
245 false),
246 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
247 true),
248 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
249 iwl_mvm_rx_umac_scan_iter_complete_notif, false),
250
251 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
252
253 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
254 false),
255
256 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
257 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
258 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
259 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true),
260 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
261 iwl_mvm_temp_notif, true),
262
263 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
264 true),
265 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, false),
266 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, true),
267
268 };
269 #undef RX_HANDLER
270 #undef RX_HANDLER_GRP
271 #define CMD(x) [x] = #x
272
273 static const char *const iwl_mvm_cmd_strings[REPLY_MAX + 1] = {
274 CMD(MVM_ALIVE),
275 CMD(REPLY_ERROR),
276 CMD(ECHO_CMD),
277 CMD(INIT_COMPLETE_NOTIF),
278 CMD(PHY_CONTEXT_CMD),
279 CMD(MGMT_MCAST_KEY),
280 CMD(TX_CMD),
281 CMD(TXPATH_FLUSH),
282 CMD(SHARED_MEM_CFG),
283 CMD(MAC_CONTEXT_CMD),
284 CMD(TIME_EVENT_CMD),
285 CMD(TIME_EVENT_NOTIFICATION),
286 CMD(BINDING_CONTEXT_CMD),
287 CMD(TIME_QUOTA_CMD),
288 CMD(NON_QOS_TX_COUNTER_CMD),
289 CMD(DC2DC_CONFIG_CMD),
290 CMD(NVM_ACCESS_CMD),
291 CMD(PHY_CONFIGURATION_CMD),
292 CMD(CALIB_RES_NOTIF_PHY_DB),
293 CMD(SET_CALIB_DEFAULT_CMD),
294 CMD(FW_PAGING_BLOCK_CMD),
295 CMD(ADD_STA_KEY),
296 CMD(ADD_STA),
297 CMD(FW_GET_ITEM_CMD),
298 CMD(REMOVE_STA),
299 CMD(LQ_CMD),
300 CMD(SCAN_OFFLOAD_CONFIG_CMD),
301 CMD(MATCH_FOUND_NOTIFICATION),
302 CMD(SCAN_OFFLOAD_REQUEST_CMD),
303 CMD(SCAN_OFFLOAD_ABORT_CMD),
304 CMD(HOT_SPOT_CMD),
305 CMD(SCAN_OFFLOAD_COMPLETE),
306 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
307 CMD(SCAN_ITERATION_COMPLETE),
308 CMD(POWER_TABLE_CMD),
309 CMD(WEP_KEY),
310 CMD(REPLY_RX_PHY_CMD),
311 CMD(REPLY_RX_MPDU_CMD),
312 CMD(BEACON_NOTIFICATION),
313 CMD(BEACON_TEMPLATE_CMD),
314 CMD(STATISTICS_CMD),
315 CMD(STATISTICS_NOTIFICATION),
316 CMD(EOSP_NOTIFICATION),
317 CMD(REDUCE_TX_POWER_CMD),
318 CMD(TX_ANT_CONFIGURATION_CMD),
319 CMD(D3_CONFIG_CMD),
320 CMD(D0I3_END_CMD),
321 CMD(PROT_OFFLOAD_CONFIG_CMD),
322 CMD(OFFLOADS_QUERY_CMD),
323 CMD(REMOTE_WAKE_CONFIG_CMD),
324 CMD(WOWLAN_PATTERNS),
325 CMD(WOWLAN_CONFIGURATION),
326 CMD(WOWLAN_TSC_RSC_PARAM),
327 CMD(WOWLAN_TKIP_PARAM),
328 CMD(WOWLAN_KEK_KCK_MATERIAL),
329 CMD(WOWLAN_GET_STATUSES),
330 CMD(WOWLAN_TX_POWER_PER_DB),
331 CMD(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
332 CMD(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
333 CMD(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
334 CMD(CARD_STATE_NOTIFICATION),
335 CMD(MISSED_BEACONS_NOTIFICATION),
336 CMD(BT_COEX_PRIO_TABLE),
337 CMD(BT_COEX_PROT_ENV),
338 CMD(BT_PROFILE_NOTIFICATION),
339 CMD(BT_CONFIG),
340 CMD(MCAST_FILTER_CMD),
341 CMD(BCAST_FILTER_CMD),
342 CMD(REPLY_SF_CFG_CMD),
343 CMD(REPLY_BEACON_FILTERING_CMD),
344 CMD(CMD_DTS_MEASUREMENT_TRIGGER),
345 CMD(DTS_MEASUREMENT_NOTIFICATION),
346 CMD(REPLY_THERMAL_MNG_BACKOFF),
347 CMD(MAC_PM_POWER_TABLE),
348 CMD(LTR_CONFIG),
349 CMD(BT_COEX_CI),
350 CMD(BT_COEX_UPDATE_SW_BOOST),
351 CMD(BT_COEX_UPDATE_CORUN_LUT),
352 CMD(BT_COEX_UPDATE_REDUCED_TXP),
353 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
354 CMD(ANTENNA_COUPLING_NOTIFICATION),
355 CMD(SCD_QUEUE_CFG),
356 CMD(SCAN_CFG_CMD),
357 CMD(SCAN_REQ_UMAC),
358 CMD(SCAN_ABORT_UMAC),
359 CMD(SCAN_COMPLETE_UMAC),
360 CMD(TDLS_CHANNEL_SWITCH_CMD),
361 CMD(TDLS_CHANNEL_SWITCH_NOTIFICATION),
362 CMD(TDLS_CONFIG_CMD),
363 CMD(MCC_UPDATE_CMD),
364 CMD(SCAN_ITERATION_COMPLETE_UMAC),
365 };
366 #undef CMD
367
368 /* this forward declaration can avoid to export the function */
369 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
370 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
371
372 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
373 {
374 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
375
376 if (!pwr_tx_backoff)
377 return 0;
378
379 while (pwr_tx_backoff->pwr) {
380 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
381 return pwr_tx_backoff->backoff;
382
383 pwr_tx_backoff++;
384 }
385
386 return 0;
387 }
388
389 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
390
391 static struct iwl_op_mode *
392 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
393 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
394 {
395 struct ieee80211_hw *hw;
396 struct iwl_op_mode *op_mode;
397 struct iwl_mvm *mvm;
398 struct iwl_trans_config trans_cfg = {};
399 static const u8 no_reclaim_cmds[] = {
400 TX_CMD,
401 };
402 int err, scan_size;
403 u32 min_backoff;
404
405 /*
406 * We use IWL_MVM_STATION_COUNT to check the validity of the station
407 * index all over the driver - check that its value corresponds to the
408 * array size.
409 */
410 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
411
412 /********************************
413 * 1. Allocating and configuring HW data
414 ********************************/
415 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
416 sizeof(struct iwl_mvm),
417 &iwl_mvm_hw_ops);
418 if (!hw)
419 return NULL;
420
421 if (cfg->max_rx_agg_size)
422 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
423
424 if (cfg->max_tx_agg_size)
425 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
426
427 op_mode = hw->priv;
428
429 mvm = IWL_OP_MODE_GET_MVM(op_mode);
430 mvm->dev = trans->dev;
431 mvm->trans = trans;
432 mvm->cfg = cfg;
433 mvm->fw = fw;
434 mvm->hw = hw;
435
436 if (iwl_mvm_has_new_rx_api(mvm)) {
437 op_mode->ops = &iwl_mvm_ops_mq;
438 } else {
439 op_mode->ops = &iwl_mvm_ops;
440
441 if (WARN_ON(trans->num_rx_queues > 1))
442 goto out_free;
443 }
444
445 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
446
447 mvm->aux_queue = 15;
448 mvm->first_agg_queue = 16;
449 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
450 if (mvm->cfg->base_params->num_of_queues == 16) {
451 mvm->aux_queue = 11;
452 mvm->first_agg_queue = 12;
453 }
454 mvm->sf_state = SF_UNINIT;
455 mvm->low_latency_agg_frame_limit = 6;
456 mvm->cur_ucode = IWL_UCODE_INIT;
457
458 mutex_init(&mvm->mutex);
459 mutex_init(&mvm->d0i3_suspend_mutex);
460 spin_lock_init(&mvm->async_handlers_lock);
461 INIT_LIST_HEAD(&mvm->time_event_list);
462 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
463 INIT_LIST_HEAD(&mvm->async_handlers_list);
464 spin_lock_init(&mvm->time_event_lock);
465 spin_lock_init(&mvm->queue_info_lock);
466
467 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
468 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
469 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
470 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
471 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
472 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
473
474 spin_lock_init(&mvm->d0i3_tx_lock);
475 spin_lock_init(&mvm->refs_lock);
476 skb_queue_head_init(&mvm->d0i3_tx);
477 init_waitqueue_head(&mvm->d0i3_exit_waitq);
478
479 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
480
481 /*
482 * Populate the state variables that the transport layer needs
483 * to know about.
484 */
485 trans_cfg.op_mode = op_mode;
486 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
487 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
488 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
489 trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
490 IWL_UCODE_TLV_API_WIDE_CMD_HDR);
491
492 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
493 trans_cfg.bc_table_dword = true;
494
495 trans_cfg.command_names = iwl_mvm_cmd_strings;
496
497 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
498 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
499 trans_cfg.scd_set_active = true;
500
501 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
502
503 /* Set a short watchdog for the command queue */
504 trans_cfg.cmd_q_wdg_timeout =
505 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
506
507 snprintf(mvm->hw->wiphy->fw_version,
508 sizeof(mvm->hw->wiphy->fw_version),
509 "%s", fw->fw_version);
510
511 /* Configure transport layer */
512 iwl_trans_configure(mvm->trans, &trans_cfg);
513
514 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
515 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
516 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
517 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
518 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
519 sizeof(trans->dbg_conf_tlv));
520 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
521
522 /* set up notification wait support */
523 iwl_notification_wait_init(&mvm->notif_wait);
524
525 /* Init phy db */
526 mvm->phy_db = iwl_phy_db_init(trans);
527 if (!mvm->phy_db) {
528 IWL_ERR(mvm, "Cannot init phy_db\n");
529 goto out_free;
530 }
531
532 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
533 mvm->cfg->name, mvm->trans->hw_rev);
534
535 min_backoff = calc_min_backoff(trans, cfg);
536 iwl_mvm_tt_initialize(mvm, min_backoff);
537
538 if (iwlwifi_mod_params.nvm_file)
539 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
540 else
541 IWL_DEBUG_EEPROM(mvm->trans->dev,
542 "working without external nvm file\n");
543
544 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
545 "not allowing power-up and not having nvm_file\n"))
546 goto out_free;
547
548 /*
549 * Even if nvm exists in the nvm_file driver should read again the nvm
550 * from the nic because there might be entries that exist in the OTP
551 * and not in the file.
552 * for nics with no_power_up_nic_in_init: rely completley on nvm_file
553 */
554 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
555 err = iwl_nvm_init(mvm, false);
556 if (err)
557 goto out_free;
558 } else {
559 err = iwl_trans_start_hw(mvm->trans);
560 if (err)
561 goto out_free;
562
563 mutex_lock(&mvm->mutex);
564 err = iwl_run_init_mvm_ucode(mvm, true);
565 if (!err || !iwlmvm_mod_params.init_dbg)
566 iwl_trans_stop_device(trans);
567 mutex_unlock(&mvm->mutex);
568 /* returns 0 if successful, 1 if success but in rfkill */
569 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
570 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
571 goto out_free;
572 }
573 }
574
575 scan_size = iwl_mvm_scan_size(mvm);
576
577 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
578 if (!mvm->scan_cmd)
579 goto out_free;
580
581 /* Set EBS as successful as long as not stated otherwise by the FW. */
582 mvm->last_ebs_successful = true;
583
584 err = iwl_mvm_mac_setup_register(mvm);
585 if (err)
586 goto out_free;
587
588 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
589 if (err)
590 goto out_unregister;
591
592 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
593
594 /* rpm starts with a taken ref. only set the appropriate bit here. */
595 mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1;
596
597 iwl_mvm_tof_init(mvm);
598
599 return op_mode;
600
601 out_unregister:
602 ieee80211_unregister_hw(mvm->hw);
603 iwl_mvm_leds_exit(mvm);
604 out_free:
605 flush_delayed_work(&mvm->fw_dump_wk);
606 iwl_phy_db_free(mvm->phy_db);
607 kfree(mvm->scan_cmd);
608 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
609 iwl_trans_op_mode_leave(trans);
610 ieee80211_free_hw(mvm->hw);
611 return NULL;
612 }
613
614 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
615 {
616 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
617 int i;
618
619 iwl_mvm_leds_exit(mvm);
620
621 iwl_mvm_tt_exit(mvm);
622
623 ieee80211_unregister_hw(mvm->hw);
624
625 kfree(mvm->scan_cmd);
626 kfree(mvm->mcast_filter_cmd);
627 mvm->mcast_filter_cmd = NULL;
628
629 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
630 kfree(mvm->d3_resume_sram);
631 if (mvm->nd_config) {
632 kfree(mvm->nd_config->match_sets);
633 kfree(mvm->nd_config->scan_plans);
634 kfree(mvm->nd_config);
635 mvm->nd_config = NULL;
636 }
637 #endif
638
639 iwl_trans_op_mode_leave(mvm->trans);
640
641 iwl_phy_db_free(mvm->phy_db);
642 mvm->phy_db = NULL;
643
644 iwl_free_nvm_data(mvm->nvm_data);
645 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
646 kfree(mvm->nvm_sections[i].data);
647
648 iwl_mvm_tof_clean(mvm);
649
650 ieee80211_free_hw(mvm->hw);
651 }
652
653 struct iwl_async_handler_entry {
654 struct list_head list;
655 struct iwl_rx_cmd_buffer rxb;
656 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
657 };
658
659 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
660 {
661 struct iwl_async_handler_entry *entry, *tmp;
662
663 spin_lock_bh(&mvm->async_handlers_lock);
664 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
665 iwl_free_rxb(&entry->rxb);
666 list_del(&entry->list);
667 kfree(entry);
668 }
669 spin_unlock_bh(&mvm->async_handlers_lock);
670 }
671
672 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
673 {
674 struct iwl_mvm *mvm =
675 container_of(wk, struct iwl_mvm, async_handlers_wk);
676 struct iwl_async_handler_entry *entry, *tmp;
677 struct list_head local_list;
678
679 INIT_LIST_HEAD(&local_list);
680
681 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
682 mutex_lock(&mvm->mutex);
683
684 /*
685 * Sync with Rx path with a lock. Remove all the entries from this list,
686 * add them to a local one (lock free), and then handle them.
687 */
688 spin_lock_bh(&mvm->async_handlers_lock);
689 list_splice_init(&mvm->async_handlers_list, &local_list);
690 spin_unlock_bh(&mvm->async_handlers_lock);
691
692 list_for_each_entry_safe(entry, tmp, &local_list, list) {
693 entry->fn(mvm, &entry->rxb);
694 iwl_free_rxb(&entry->rxb);
695 list_del(&entry->list);
696 kfree(entry);
697 }
698 mutex_unlock(&mvm->mutex);
699 }
700
701 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
702 struct iwl_rx_packet *pkt)
703 {
704 struct iwl_fw_dbg_trigger_tlv *trig;
705 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
706 int i;
707
708 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
709 return;
710
711 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
712 cmds_trig = (void *)trig->data;
713
714 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
715 return;
716
717 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
718 /* don't collect on CMD 0 */
719 if (!cmds_trig->cmds[i].cmd_id)
720 break;
721
722 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
723 cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
724 continue;
725
726 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
727 "CMD 0x%02x.%02x received",
728 pkt->hdr.group_id, pkt->hdr.cmd);
729 break;
730 }
731 }
732
733 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
734 struct iwl_rx_cmd_buffer *rxb,
735 struct iwl_rx_packet *pkt)
736 {
737 int i;
738
739 iwl_mvm_rx_check_trigger(mvm, pkt);
740
741 /*
742 * Do the notification wait before RX handlers so
743 * even if the RX handler consumes the RXB we have
744 * access to it in the notification wait entry.
745 */
746 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
747
748 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
749 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
750 struct iwl_async_handler_entry *entry;
751
752 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
753 continue;
754
755 if (!rx_h->async) {
756 rx_h->fn(mvm, rxb);
757 return;
758 }
759
760 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
761 /* we can't do much... */
762 if (!entry)
763 return;
764
765 entry->rxb._page = rxb_steal_page(rxb);
766 entry->rxb._offset = rxb->_offset;
767 entry->rxb._rx_page_order = rxb->_rx_page_order;
768 entry->fn = rx_h->fn;
769 spin_lock(&mvm->async_handlers_lock);
770 list_add_tail(&entry->list, &mvm->async_handlers_list);
771 spin_unlock(&mvm->async_handlers_lock);
772 schedule_work(&mvm->async_handlers_wk);
773 break;
774 }
775 }
776
777 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
778 struct napi_struct *napi,
779 struct iwl_rx_cmd_buffer *rxb)
780 {
781 struct iwl_rx_packet *pkt = rxb_addr(rxb);
782 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
783
784 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
785 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
786 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
787 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
788 else
789 iwl_mvm_rx_common(mvm, rxb, pkt);
790 }
791
792 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
793 struct napi_struct *napi,
794 struct iwl_rx_cmd_buffer *rxb)
795 {
796 struct iwl_rx_packet *pkt = rxb_addr(rxb);
797 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
798
799 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
800 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
801 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
802 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
803 else
804 iwl_mvm_rx_common(mvm, rxb, pkt);
805 }
806
807 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
808 {
809 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
810 unsigned long mq;
811 int q;
812
813 spin_lock_bh(&mvm->queue_info_lock);
814 mq = mvm->queue_info[queue].hw_queue_to_mac80211;
815 spin_unlock_bh(&mvm->queue_info_lock);
816
817 if (WARN_ON_ONCE(!mq))
818 return;
819
820 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
821 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
822 IWL_DEBUG_TX_QUEUES(mvm,
823 "queue %d (mac80211 %d) already stopped\n",
824 queue, q);
825 continue;
826 }
827
828 ieee80211_stop_queue(mvm->hw, q);
829 }
830 }
831
832 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
833 {
834 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
835 unsigned long mq;
836 int q;
837
838 spin_lock_bh(&mvm->queue_info_lock);
839 mq = mvm->queue_info[queue].hw_queue_to_mac80211;
840 spin_unlock_bh(&mvm->queue_info_lock);
841
842 if (WARN_ON_ONCE(!mq))
843 return;
844
845 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
846 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
847 IWL_DEBUG_TX_QUEUES(mvm,
848 "queue %d (mac80211 %d) still stopped\n",
849 queue, q);
850 continue;
851 }
852
853 ieee80211_wake_queue(mvm->hw, q);
854 }
855 }
856
857 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
858 {
859 if (state)
860 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
861 else
862 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
863
864 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
865 }
866
867 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
868 {
869 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
870 bool calibrating = ACCESS_ONCE(mvm->calibrating);
871
872 if (state)
873 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
874 else
875 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
876
877 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
878
879 /* iwl_run_init_mvm_ucode is waiting for results, abort it */
880 if (calibrating)
881 iwl_abort_notification_waits(&mvm->notif_wait);
882
883 /*
884 * Stop the device if we run OPERATIONAL firmware or if we are in the
885 * middle of the calibrations.
886 */
887 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
888 }
889
890 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
891 {
892 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
893 struct ieee80211_tx_info *info;
894
895 info = IEEE80211_SKB_CB(skb);
896 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
897 ieee80211_free_txskb(mvm->hw, skb);
898 }
899
900 struct iwl_mvm_reprobe {
901 struct device *dev;
902 struct work_struct work;
903 };
904
905 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
906 {
907 struct iwl_mvm_reprobe *reprobe;
908
909 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
910 if (device_reprobe(reprobe->dev))
911 dev_err(reprobe->dev, "reprobe failed!\n");
912 kfree(reprobe);
913 module_put(THIS_MODULE);
914 }
915
916 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
917 {
918 struct iwl_mvm *mvm =
919 container_of(work, struct iwl_mvm, fw_dump_wk.work);
920
921 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
922 return;
923
924 mutex_lock(&mvm->mutex);
925
926 /* stop recording */
927 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
928 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
929 } else {
930 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
931 /* wait before we collect the data till the DBGC stop */
932 udelay(100);
933 }
934
935 iwl_mvm_fw_error_dump(mvm);
936
937 /* start recording again if the firmware is not crashed */
938 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
939 mvm->fw->dbg_dest_tlv &&
940 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
941
942 mutex_unlock(&mvm->mutex);
943
944 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
945 }
946
947 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
948 {
949 iwl_abort_notification_waits(&mvm->notif_wait);
950
951 /*
952 * This is a bit racy, but worst case we tell mac80211 about
953 * a stopped/aborted scan when that was already done which
954 * is not a problem. It is necessary to abort any os scan
955 * here because mac80211 requires having the scan cleared
956 * before restarting.
957 * We'll reset the scan_status to NONE in restart cleanup in
958 * the next start() call from mac80211. If restart isn't called
959 * (no fw restart) scan status will stay busy.
960 */
961 iwl_mvm_report_scan_aborted(mvm);
962
963 /*
964 * If we're restarting already, don't cycle restarts.
965 * If INIT fw asserted, it will likely fail again.
966 * If WoWLAN fw asserted, don't restart either, mac80211
967 * can't recover this since we're already half suspended.
968 */
969 if (!mvm->restart_fw && fw_error) {
970 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
971 NULL);
972 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
973 &mvm->status)) {
974 struct iwl_mvm_reprobe *reprobe;
975
976 IWL_ERR(mvm,
977 "Firmware error during reconfiguration - reprobe!\n");
978
979 /*
980 * get a module reference to avoid doing this while unloading
981 * anyway and to avoid scheduling a work with code that's
982 * being removed.
983 */
984 if (!try_module_get(THIS_MODULE)) {
985 IWL_ERR(mvm, "Module is being unloaded - abort\n");
986 return;
987 }
988
989 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
990 if (!reprobe) {
991 module_put(THIS_MODULE);
992 return;
993 }
994 reprobe->dev = mvm->trans->dev;
995 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
996 schedule_work(&reprobe->work);
997 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
998 /* don't let the transport/FW power down */
999 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1000
1001 if (fw_error && mvm->restart_fw > 0)
1002 mvm->restart_fw--;
1003 ieee80211_restart_hw(mvm->hw);
1004 }
1005 }
1006
1007 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1008 {
1009 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1010
1011 iwl_mvm_dump_nic_error_log(mvm);
1012
1013 iwl_mvm_nic_restart(mvm, true);
1014 }
1015
1016 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1017 {
1018 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1019
1020 WARN_ON(1);
1021 iwl_mvm_nic_restart(mvm, true);
1022 }
1023
1024 struct iwl_d0i3_iter_data {
1025 struct iwl_mvm *mvm;
1026 u8 ap_sta_id;
1027 u8 vif_count;
1028 u8 offloading_tid;
1029 bool disable_offloading;
1030 };
1031
1032 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1033 struct ieee80211_vif *vif,
1034 struct iwl_d0i3_iter_data *iter_data)
1035 {
1036 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1037 struct ieee80211_sta *ap_sta;
1038 struct iwl_mvm_sta *mvmsta;
1039 u32 available_tids = 0;
1040 u8 tid;
1041
1042 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1043 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1044 return false;
1045
1046 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
1047 if (IS_ERR_OR_NULL(ap_sta))
1048 return false;
1049
1050 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
1051 spin_lock_bh(&mvmsta->lock);
1052 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1053 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1054
1055 /*
1056 * in case of pending tx packets, don't use this tid
1057 * for offloading in order to prevent reuse of the same
1058 * qos seq counters.
1059 */
1060 if (iwl_mvm_tid_queued(tid_data))
1061 continue;
1062
1063 if (tid_data->state != IWL_AGG_OFF)
1064 continue;
1065
1066 available_tids |= BIT(tid);
1067 }
1068 spin_unlock_bh(&mvmsta->lock);
1069
1070 /*
1071 * disallow protocol offloading if we have no available tid
1072 * (with no pending frames and no active aggregation,
1073 * as we don't handle "holes" properly - the scheduler needs the
1074 * frame's seq number and TFD index to match)
1075 */
1076 if (!available_tids)
1077 return true;
1078
1079 /* for simplicity, just use the first available tid */
1080 iter_data->offloading_tid = ffs(available_tids) - 1;
1081 return false;
1082 }
1083
1084 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1085 struct ieee80211_vif *vif)
1086 {
1087 struct iwl_d0i3_iter_data *data = _data;
1088 struct iwl_mvm *mvm = data->mvm;
1089 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1090 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1091
1092 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1093 if (vif->type != NL80211_IFTYPE_STATION ||
1094 !vif->bss_conf.assoc)
1095 return;
1096
1097 /*
1098 * in case of pending tx packets or active aggregations,
1099 * avoid offloading features in order to prevent reuse of
1100 * the same qos seq counters.
1101 */
1102 if (iwl_mvm_disallow_offloading(mvm, vif, data))
1103 data->disable_offloading = true;
1104
1105 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1106 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags);
1107
1108 /*
1109 * on init/association, mvm already configures POWER_TABLE_CMD
1110 * and REPLY_MCAST_FILTER_CMD, so currently don't
1111 * reconfigure them (we might want to use different
1112 * params later on, though).
1113 */
1114 data->ap_sta_id = mvmvif->ap_sta_id;
1115 data->vif_count++;
1116 }
1117
1118 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1119 struct iwl_wowlan_config_cmd *cmd,
1120 struct iwl_d0i3_iter_data *iter_data)
1121 {
1122 struct ieee80211_sta *ap_sta;
1123 struct iwl_mvm_sta *mvm_ap_sta;
1124
1125 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1126 return;
1127
1128 rcu_read_lock();
1129
1130 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1131 if (IS_ERR_OR_NULL(ap_sta))
1132 goto out;
1133
1134 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1135 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1136 cmd->offloading_tid = iter_data->offloading_tid;
1137
1138 /*
1139 * The d0i3 uCode takes care of the nonqos counters,
1140 * so configure only the qos seq ones.
1141 */
1142 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1143 out:
1144 rcu_read_unlock();
1145 }
1146
1147 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1148 {
1149 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1150 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1151 int ret;
1152 struct iwl_d0i3_iter_data d0i3_iter_data = {
1153 .mvm = mvm,
1154 };
1155 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1156 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1157 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1158 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
1159 IWL_WOWLAN_WAKEUP_BCN_FILTERING),
1160 };
1161 struct iwl_d3_manager_config d3_cfg_cmd = {
1162 .min_sleep_time = cpu_to_le32(1000),
1163 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1164 };
1165
1166 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1167
1168 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1169
1170 /*
1171 * iwl_mvm_ref_sync takes a reference before checking the flag.
1172 * so by checking there is no held reference we prevent a state
1173 * in which iwl_mvm_ref_sync continues successfully while we
1174 * configure the firmware to enter d0i3
1175 */
1176 if (iwl_mvm_ref_taken(mvm)) {
1177 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1178 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1179 wake_up(&mvm->d0i3_exit_waitq);
1180 return 1;
1181 }
1182
1183 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1184 IEEE80211_IFACE_ITER_NORMAL,
1185 iwl_mvm_enter_d0i3_iterator,
1186 &d0i3_iter_data);
1187 if (d0i3_iter_data.vif_count == 1) {
1188 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1189 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1190 } else {
1191 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1192 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1193 mvm->d0i3_offloading = false;
1194 }
1195
1196 /* make sure we have no running tx while configuring the seqno */
1197 synchronize_net();
1198
1199 /* configure wowlan configuration only if needed */
1200 if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1201 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1202 &d0i3_iter_data);
1203
1204 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1205 sizeof(wowlan_config_cmd),
1206 &wowlan_config_cmd);
1207 if (ret)
1208 return ret;
1209 }
1210
1211 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1212 flags | CMD_MAKE_TRANS_IDLE,
1213 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1214 }
1215
1216 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1217 struct ieee80211_vif *vif)
1218 {
1219 struct iwl_mvm *mvm = _data;
1220 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1221
1222 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1223 if (vif->type != NL80211_IFTYPE_STATION ||
1224 !vif->bss_conf.assoc)
1225 return;
1226
1227 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1228 }
1229
1230 struct iwl_mvm_wakeup_reason_iter_data {
1231 struct iwl_mvm *mvm;
1232 u32 wakeup_reasons;
1233 };
1234
1235 static void iwl_mvm_d0i3_wakeup_reason_iter(void *_data, u8 *mac,
1236 struct ieee80211_vif *vif)
1237 {
1238 struct iwl_mvm_wakeup_reason_iter_data *data = _data;
1239 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1240
1241 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc &&
1242 data->mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) {
1243 if (data->wakeup_reasons &
1244 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1245 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1246 else
1247 ieee80211_beacon_loss(vif);
1248 }
1249 }
1250
1251 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1252 {
1253 struct ieee80211_sta *sta = NULL;
1254 struct iwl_mvm_sta *mvm_ap_sta;
1255 int i;
1256 bool wake_queues = false;
1257
1258 lockdep_assert_held(&mvm->mutex);
1259
1260 spin_lock_bh(&mvm->d0i3_tx_lock);
1261
1262 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1263 goto out;
1264
1265 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1266
1267 /* get the sta in order to update seq numbers and re-enqueue skbs */
1268 sta = rcu_dereference_protected(
1269 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1270 lockdep_is_held(&mvm->mutex));
1271
1272 if (IS_ERR_OR_NULL(sta)) {
1273 sta = NULL;
1274 goto out;
1275 }
1276
1277 if (mvm->d0i3_offloading && qos_seq) {
1278 /* update qos seq numbers if offloading was enabled */
1279 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1280 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1281 u16 seq = le16_to_cpu(qos_seq[i]);
1282 /* firmware stores last-used one, we store next one */
1283 seq += 0x10;
1284 mvm_ap_sta->tid_data[i].seq_number = seq;
1285 }
1286 }
1287 out:
1288 /* re-enqueue (or drop) all packets */
1289 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1290 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1291
1292 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1293 ieee80211_free_txskb(mvm->hw, skb);
1294
1295 /* if the skb_queue is not empty, we need to wake queues */
1296 wake_queues = true;
1297 }
1298 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1299 wake_up(&mvm->d0i3_exit_waitq);
1300 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1301 if (wake_queues)
1302 ieee80211_wake_queues(mvm->hw);
1303
1304 spin_unlock_bh(&mvm->d0i3_tx_lock);
1305 }
1306
1307 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1308 {
1309 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1310 struct iwl_host_cmd get_status_cmd = {
1311 .id = WOWLAN_GET_STATUSES,
1312 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1313 };
1314 struct iwl_wowlan_status *status;
1315 int ret;
1316 u32 handled_reasons, wakeup_reasons = 0;
1317 __le16 *qos_seq = NULL;
1318
1319 mutex_lock(&mvm->mutex);
1320 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1321 if (ret)
1322 goto out;
1323
1324 if (!get_status_cmd.resp_pkt)
1325 goto out;
1326
1327 status = (void *)get_status_cmd.resp_pkt->data;
1328 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1329 qos_seq = status->qos_seq_ctr;
1330
1331 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1332
1333 handled_reasons = IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1334 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1335 if (wakeup_reasons & handled_reasons) {
1336 struct iwl_mvm_wakeup_reason_iter_data data = {
1337 .mvm = mvm,
1338 .wakeup_reasons = wakeup_reasons,
1339 };
1340
1341 ieee80211_iterate_active_interfaces(
1342 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1343 iwl_mvm_d0i3_wakeup_reason_iter, &data);
1344 }
1345 out:
1346 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1347
1348 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1349 wakeup_reasons);
1350
1351 /* qos_seq might point inside resp_pkt, so free it only now */
1352 if (get_status_cmd.resp_pkt)
1353 iwl_free_resp(&get_status_cmd);
1354
1355 /* the FW might have updated the regdomain */
1356 iwl_mvm_update_changed_regdom(mvm);
1357
1358 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1359 mutex_unlock(&mvm->mutex);
1360 }
1361
1362 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1363 {
1364 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1365 CMD_WAKE_UP_TRANS;
1366 int ret;
1367
1368 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1369
1370 mutex_lock(&mvm->d0i3_suspend_mutex);
1371 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1372 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1373 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1374 mutex_unlock(&mvm->d0i3_suspend_mutex);
1375 return 0;
1376 }
1377 mutex_unlock(&mvm->d0i3_suspend_mutex);
1378
1379 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1380 if (ret)
1381 goto out;
1382
1383 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1384 IEEE80211_IFACE_ITER_NORMAL,
1385 iwl_mvm_exit_d0i3_iterator,
1386 mvm);
1387 out:
1388 schedule_work(&mvm->d0i3_exit_work);
1389 return ret;
1390 }
1391
1392 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1393 {
1394 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1395
1396 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1397 return _iwl_mvm_exit_d0i3(mvm);
1398 }
1399
1400 #define IWL_MVM_COMMON_OPS \
1401 /* these could be differentiated */ \
1402 .queue_full = iwl_mvm_stop_sw_queue, \
1403 .queue_not_full = iwl_mvm_wake_sw_queue, \
1404 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
1405 .free_skb = iwl_mvm_free_skb, \
1406 .nic_error = iwl_mvm_nic_error, \
1407 .cmd_queue_full = iwl_mvm_cmd_queue_full, \
1408 .nic_config = iwl_mvm_nic_config, \
1409 .enter_d0i3 = iwl_mvm_enter_d0i3, \
1410 .exit_d0i3 = iwl_mvm_exit_d0i3, \
1411 /* as we only register one, these MUST be common! */ \
1412 .start = iwl_op_mode_mvm_start, \
1413 .stop = iwl_op_mode_mvm_stop
1414
1415 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1416 IWL_MVM_COMMON_OPS,
1417 .rx = iwl_mvm_rx,
1418 };
1419
1420 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1421 struct napi_struct *napi,
1422 struct iwl_rx_cmd_buffer *rxb,
1423 unsigned int queue)
1424 {
1425 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1426
1427 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1428 }
1429
1430 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1431 IWL_MVM_COMMON_OPS,
1432 .rx = iwl_mvm_rx_mq,
1433 .rx_rss = iwl_mvm_rx_mq_rss,
1434 };
Linux kernel - Deliverables
This page took 0.061085 seconds and 5 git commands to generate.