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iwlwifi: mvm: move fw-dbg code to separate file
[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 #include "fw-dbg.h"
86
87 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
88 MODULE_DESCRIPTION(DRV_DESCRIPTION);
89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
90 MODULE_LICENSE("GPL");
91
92 static const struct iwl_op_mode_ops iwl_mvm_ops;
93 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
94
95 struct iwl_mvm_mod_params iwlmvm_mod_params = {
96 .power_scheme = IWL_POWER_SCHEME_BPS,
97 .tfd_q_hang_detect = true
98 /* rest of fields are 0 by default */
99 };
100
101 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
102 MODULE_PARM_DESC(init_dbg,
103 "set to true to debug an ASSERT in INIT fw (default: false");
104 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
105 MODULE_PARM_DESC(power_scheme,
106 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
107 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
108 bool, S_IRUGO);
109 MODULE_PARM_DESC(tfd_q_hang_detect,
110 "TFD queues hang detection (default: true");
111
112 /*
113 * module init and exit functions
114 */
115 static int __init iwl_mvm_init(void)
116 {
117 int ret;
118
119 ret = iwl_mvm_rate_control_register();
120 if (ret) {
121 pr_err("Unable to register rate control algorithm: %d\n", ret);
122 return ret;
123 }
124
125 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
126
127 if (ret) {
128 pr_err("Unable to register MVM op_mode: %d\n", ret);
129 iwl_mvm_rate_control_unregister();
130 }
131
132 return ret;
133 }
134 module_init(iwl_mvm_init);
135
136 static void __exit iwl_mvm_exit(void)
137 {
138 iwl_opmode_deregister("iwlmvm");
139 iwl_mvm_rate_control_unregister();
140 }
141 module_exit(iwl_mvm_exit);
142
143 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
144 {
145 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
146 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
147 u32 reg_val = 0;
148 u32 phy_config = iwl_mvm_get_phy_config(mvm);
149
150 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
151 FW_PHY_CFG_RADIO_TYPE_POS;
152 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
153 FW_PHY_CFG_RADIO_STEP_POS;
154 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
155 FW_PHY_CFG_RADIO_DASH_POS;
156
157 /* SKU control */
158 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
159 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
160 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
161 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
162
163 /* radio configuration */
164 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
165 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
166 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
167
168 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
169 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
170
171 /*
172 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
173 * shouldn't be set to any non-zero value. The same is supposed to be
174 * true of the other HW, but unsetting them (such as the 7260) causes
175 * automatic tests to fail on seemingly unrelated errors. Need to
176 * further investigate this, but for now we'll separate cases.
177 */
178 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
179 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
180
181 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
182 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
183 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
184 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
185 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
186 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
187 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
188 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
189 reg_val);
190
191 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
192 radio_cfg_step, radio_cfg_dash);
193
194 /*
195 * W/A : NIC is stuck in a reset state after Early PCIe power off
196 * (PCIe power is lost before PERST# is asserted), causing ME FW
197 * to lose ownership and not being able to obtain it back.
198 */
199 if (!mvm->trans->cfg->apmg_not_supported)
200 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
201 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
202 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
203 }
204
205 struct iwl_rx_handlers {
206 u16 cmd_id;
207 bool async;
208 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
209 };
210
211 #define RX_HANDLER(_cmd_id, _fn, _async) \
212 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
213 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _async) \
214 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .async = _async }
215
216 /*
217 * Handlers for fw notifications
218 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
219 * This list should be in order of frequency for performance purposes.
220 *
221 * The handler can be SYNC - this means that it will be called in the Rx path
222 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
223 * only in this case!), it should be set as ASYNC. In that case, it will be
224 * called from a worker with mvm->mutex held.
225 */
226 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
227 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
228 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
229
230 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
231 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, true),
232 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
233 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
234 iwl_mvm_rx_ant_coupling_notif, true),
235
236 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
237 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc, true),
238
239 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
240
241 RX_HANDLER(SCAN_ITERATION_COMPLETE,
242 iwl_mvm_rx_lmac_scan_iter_complete_notif, false),
243 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
244 iwl_mvm_rx_lmac_scan_complete_notif, true),
245 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
246 false),
247 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
248 true),
249 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
250 iwl_mvm_rx_umac_scan_iter_complete_notif, false),
251
252 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
253
254 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
255 false),
256
257 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
258 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
259 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
260 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true),
261 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
262 iwl_mvm_temp_notif, true),
263
264 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
265 true),
266 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif, false),
267 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler, true),
268
269 };
270 #undef RX_HANDLER
271 #undef RX_HANDLER_GRP
272 #define CMD(x) [x] = #x
273
274 static const char *const iwl_mvm_cmd_strings[REPLY_MAX + 1] = {
275 CMD(MVM_ALIVE),
276 CMD(REPLY_ERROR),
277 CMD(ECHO_CMD),
278 CMD(INIT_COMPLETE_NOTIF),
279 CMD(PHY_CONTEXT_CMD),
280 CMD(MGMT_MCAST_KEY),
281 CMD(TX_CMD),
282 CMD(TXPATH_FLUSH),
283 CMD(SHARED_MEM_CFG),
284 CMD(MAC_CONTEXT_CMD),
285 CMD(TIME_EVENT_CMD),
286 CMD(TIME_EVENT_NOTIFICATION),
287 CMD(BINDING_CONTEXT_CMD),
288 CMD(TIME_QUOTA_CMD),
289 CMD(NON_QOS_TX_COUNTER_CMD),
290 CMD(DC2DC_CONFIG_CMD),
291 CMD(NVM_ACCESS_CMD),
292 CMD(PHY_CONFIGURATION_CMD),
293 CMD(CALIB_RES_NOTIF_PHY_DB),
294 CMD(SET_CALIB_DEFAULT_CMD),
295 CMD(FW_PAGING_BLOCK_CMD),
296 CMD(ADD_STA_KEY),
297 CMD(ADD_STA),
298 CMD(FW_GET_ITEM_CMD),
299 CMD(REMOVE_STA),
300 CMD(LQ_CMD),
301 CMD(SCAN_OFFLOAD_CONFIG_CMD),
302 CMD(MATCH_FOUND_NOTIFICATION),
303 CMD(SCAN_OFFLOAD_REQUEST_CMD),
304 CMD(SCAN_OFFLOAD_ABORT_CMD),
305 CMD(HOT_SPOT_CMD),
306 CMD(SCAN_OFFLOAD_COMPLETE),
307 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
308 CMD(SCAN_ITERATION_COMPLETE),
309 CMD(POWER_TABLE_CMD),
310 CMD(WEP_KEY),
311 CMD(REPLY_RX_PHY_CMD),
312 CMD(REPLY_RX_MPDU_CMD),
313 CMD(BEACON_NOTIFICATION),
314 CMD(BEACON_TEMPLATE_CMD),
315 CMD(STATISTICS_CMD),
316 CMD(STATISTICS_NOTIFICATION),
317 CMD(EOSP_NOTIFICATION),
318 CMD(REDUCE_TX_POWER_CMD),
319 CMD(TX_ANT_CONFIGURATION_CMD),
320 CMD(D3_CONFIG_CMD),
321 CMD(D0I3_END_CMD),
322 CMD(PROT_OFFLOAD_CONFIG_CMD),
323 CMD(OFFLOADS_QUERY_CMD),
324 CMD(REMOTE_WAKE_CONFIG_CMD),
325 CMD(WOWLAN_PATTERNS),
326 CMD(WOWLAN_CONFIGURATION),
327 CMD(WOWLAN_TSC_RSC_PARAM),
328 CMD(WOWLAN_TKIP_PARAM),
329 CMD(WOWLAN_KEK_KCK_MATERIAL),
330 CMD(WOWLAN_GET_STATUSES),
331 CMD(WOWLAN_TX_POWER_PER_DB),
332 CMD(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
333 CMD(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
334 CMD(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
335 CMD(CARD_STATE_NOTIFICATION),
336 CMD(MISSED_BEACONS_NOTIFICATION),
337 CMD(BT_COEX_PRIO_TABLE),
338 CMD(BT_COEX_PROT_ENV),
339 CMD(BT_PROFILE_NOTIFICATION),
340 CMD(BT_CONFIG),
341 CMD(MCAST_FILTER_CMD),
342 CMD(BCAST_FILTER_CMD),
343 CMD(REPLY_SF_CFG_CMD),
344 CMD(REPLY_BEACON_FILTERING_CMD),
345 CMD(CMD_DTS_MEASUREMENT_TRIGGER),
346 CMD(DTS_MEASUREMENT_NOTIFICATION),
347 CMD(REPLY_THERMAL_MNG_BACKOFF),
348 CMD(MAC_PM_POWER_TABLE),
349 CMD(LTR_CONFIG),
350 CMD(BT_COEX_CI),
351 CMD(BT_COEX_UPDATE_SW_BOOST),
352 CMD(BT_COEX_UPDATE_CORUN_LUT),
353 CMD(BT_COEX_UPDATE_REDUCED_TXP),
354 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
355 CMD(ANTENNA_COUPLING_NOTIFICATION),
356 CMD(SCD_QUEUE_CFG),
357 CMD(SCAN_CFG_CMD),
358 CMD(SCAN_REQ_UMAC),
359 CMD(SCAN_ABORT_UMAC),
360 CMD(SCAN_COMPLETE_UMAC),
361 CMD(TDLS_CHANNEL_SWITCH_CMD),
362 CMD(TDLS_CHANNEL_SWITCH_NOTIFICATION),
363 CMD(TDLS_CONFIG_CMD),
364 CMD(MCC_UPDATE_CMD),
365 CMD(SCAN_ITERATION_COMPLETE_UMAC),
366 };
367 #undef CMD
368
369 /* this forward declaration can avoid to export the function */
370 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
371 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
372
373 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
374 {
375 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
376
377 if (!pwr_tx_backoff)
378 return 0;
379
380 while (pwr_tx_backoff->pwr) {
381 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
382 return pwr_tx_backoff->backoff;
383
384 pwr_tx_backoff++;
385 }
386
387 return 0;
388 }
389
390 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
391
392 static struct iwl_op_mode *
393 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
394 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
395 {
396 struct ieee80211_hw *hw;
397 struct iwl_op_mode *op_mode;
398 struct iwl_mvm *mvm;
399 struct iwl_trans_config trans_cfg = {};
400 static const u8 no_reclaim_cmds[] = {
401 TX_CMD,
402 };
403 int err, scan_size;
404 u32 min_backoff;
405
406 /*
407 * We use IWL_MVM_STATION_COUNT to check the validity of the station
408 * index all over the driver - check that its value corresponds to the
409 * array size.
410 */
411 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
412
413 /********************************
414 * 1. Allocating and configuring HW data
415 ********************************/
416 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
417 sizeof(struct iwl_mvm),
418 &iwl_mvm_hw_ops);
419 if (!hw)
420 return NULL;
421
422 if (cfg->max_rx_agg_size)
423 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
424
425 if (cfg->max_tx_agg_size)
426 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
427
428 op_mode = hw->priv;
429
430 mvm = IWL_OP_MODE_GET_MVM(op_mode);
431 mvm->dev = trans->dev;
432 mvm->trans = trans;
433 mvm->cfg = cfg;
434 mvm->fw = fw;
435 mvm->hw = hw;
436
437 if (iwl_mvm_has_new_rx_api(mvm)) {
438 op_mode->ops = &iwl_mvm_ops_mq;
439 } else {
440 op_mode->ops = &iwl_mvm_ops;
441
442 if (WARN_ON(trans->num_rx_queues > 1))
443 goto out_free;
444 }
445
446 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
447
448 mvm->aux_queue = 15;
449 mvm->first_agg_queue = 16;
450 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
451 if (mvm->cfg->base_params->num_of_queues == 16) {
452 mvm->aux_queue = 11;
453 mvm->first_agg_queue = 12;
454 }
455 mvm->sf_state = SF_UNINIT;
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 switch (iwlwifi_mod_params.amsdu_size) {
489 case IWL_AMSDU_4K:
490 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
491 break;
492 case IWL_AMSDU_8K:
493 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
494 break;
495 case IWL_AMSDU_12K:
496 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
497 break;
498 default:
499 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
500 iwlwifi_mod_params.amsdu_size);
501 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
502 }
503 trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
504 IWL_UCODE_TLV_API_WIDE_CMD_HDR);
505
506 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
507 trans_cfg.bc_table_dword = true;
508
509 trans_cfg.command_names = iwl_mvm_cmd_strings;
510
511 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
512 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
513 trans_cfg.scd_set_active = true;
514
515 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
516
517 /* Set a short watchdog for the command queue */
518 trans_cfg.cmd_q_wdg_timeout =
519 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
520
521 snprintf(mvm->hw->wiphy->fw_version,
522 sizeof(mvm->hw->wiphy->fw_version),
523 "%s", fw->fw_version);
524
525 /* Configure transport layer */
526 iwl_trans_configure(mvm->trans, &trans_cfg);
527
528 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
529 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
530 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
531 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
532 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
533 sizeof(trans->dbg_conf_tlv));
534 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
535
536 /* set up notification wait support */
537 iwl_notification_wait_init(&mvm->notif_wait);
538
539 /* Init phy db */
540 mvm->phy_db = iwl_phy_db_init(trans);
541 if (!mvm->phy_db) {
542 IWL_ERR(mvm, "Cannot init phy_db\n");
543 goto out_free;
544 }
545
546 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
547 mvm->cfg->name, mvm->trans->hw_rev);
548
549 min_backoff = calc_min_backoff(trans, cfg);
550 iwl_mvm_tt_initialize(mvm, min_backoff);
551
552 if (iwlwifi_mod_params.nvm_file)
553 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
554 else
555 IWL_DEBUG_EEPROM(mvm->trans->dev,
556 "working without external nvm file\n");
557
558 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
559 "not allowing power-up and not having nvm_file\n"))
560 goto out_free;
561
562 /*
563 * Even if nvm exists in the nvm_file driver should read again the nvm
564 * from the nic because there might be entries that exist in the OTP
565 * and not in the file.
566 * for nics with no_power_up_nic_in_init: rely completley on nvm_file
567 */
568 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
569 err = iwl_nvm_init(mvm, false);
570 if (err)
571 goto out_free;
572 } else {
573 err = iwl_trans_start_hw(mvm->trans);
574 if (err)
575 goto out_free;
576
577 mutex_lock(&mvm->mutex);
578 err = iwl_run_init_mvm_ucode(mvm, true);
579 if (!err || !iwlmvm_mod_params.init_dbg)
580 iwl_trans_stop_device(trans);
581 mutex_unlock(&mvm->mutex);
582 /* returns 0 if successful, 1 if success but in rfkill */
583 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
584 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
585 goto out_free;
586 }
587 }
588
589 scan_size = iwl_mvm_scan_size(mvm);
590
591 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
592 if (!mvm->scan_cmd)
593 goto out_free;
594
595 /* Set EBS as successful as long as not stated otherwise by the FW. */
596 mvm->last_ebs_successful = true;
597
598 err = iwl_mvm_mac_setup_register(mvm);
599 if (err)
600 goto out_free;
601
602 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
603 if (err)
604 goto out_unregister;
605
606 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
607
608 /* rpm starts with a taken ref. only set the appropriate bit here. */
609 mvm->refs[IWL_MVM_REF_UCODE_DOWN] = 1;
610
611 iwl_mvm_tof_init(mvm);
612
613 return op_mode;
614
615 out_unregister:
616 ieee80211_unregister_hw(mvm->hw);
617 iwl_mvm_leds_exit(mvm);
618 out_free:
619 flush_delayed_work(&mvm->fw_dump_wk);
620 iwl_phy_db_free(mvm->phy_db);
621 kfree(mvm->scan_cmd);
622 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
623 iwl_trans_op_mode_leave(trans);
624 ieee80211_free_hw(mvm->hw);
625 return NULL;
626 }
627
628 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
629 {
630 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
631 int i;
632
633 iwl_mvm_leds_exit(mvm);
634
635 iwl_mvm_tt_exit(mvm);
636
637 ieee80211_unregister_hw(mvm->hw);
638
639 kfree(mvm->scan_cmd);
640 kfree(mvm->mcast_filter_cmd);
641 mvm->mcast_filter_cmd = NULL;
642
643 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
644 kfree(mvm->d3_resume_sram);
645 #endif
646
647 iwl_trans_op_mode_leave(mvm->trans);
648
649 iwl_phy_db_free(mvm->phy_db);
650 mvm->phy_db = NULL;
651
652 iwl_free_nvm_data(mvm->nvm_data);
653 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
654 kfree(mvm->nvm_sections[i].data);
655
656 iwl_mvm_tof_clean(mvm);
657
658 ieee80211_free_hw(mvm->hw);
659 }
660
661 struct iwl_async_handler_entry {
662 struct list_head list;
663 struct iwl_rx_cmd_buffer rxb;
664 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
665 };
666
667 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
668 {
669 struct iwl_async_handler_entry *entry, *tmp;
670
671 spin_lock_bh(&mvm->async_handlers_lock);
672 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
673 iwl_free_rxb(&entry->rxb);
674 list_del(&entry->list);
675 kfree(entry);
676 }
677 spin_unlock_bh(&mvm->async_handlers_lock);
678 }
679
680 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
681 {
682 struct iwl_mvm *mvm =
683 container_of(wk, struct iwl_mvm, async_handlers_wk);
684 struct iwl_async_handler_entry *entry, *tmp;
685 struct list_head local_list;
686
687 INIT_LIST_HEAD(&local_list);
688
689 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
690 mutex_lock(&mvm->mutex);
691
692 /*
693 * Sync with Rx path with a lock. Remove all the entries from this list,
694 * add them to a local one (lock free), and then handle them.
695 */
696 spin_lock_bh(&mvm->async_handlers_lock);
697 list_splice_init(&mvm->async_handlers_list, &local_list);
698 spin_unlock_bh(&mvm->async_handlers_lock);
699
700 list_for_each_entry_safe(entry, tmp, &local_list, list) {
701 entry->fn(mvm, &entry->rxb);
702 iwl_free_rxb(&entry->rxb);
703 list_del(&entry->list);
704 kfree(entry);
705 }
706 mutex_unlock(&mvm->mutex);
707 }
708
709 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
710 struct iwl_rx_packet *pkt)
711 {
712 struct iwl_fw_dbg_trigger_tlv *trig;
713 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
714 int i;
715
716 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
717 return;
718
719 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
720 cmds_trig = (void *)trig->data;
721
722 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
723 return;
724
725 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
726 /* don't collect on CMD 0 */
727 if (!cmds_trig->cmds[i].cmd_id)
728 break;
729
730 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
731 cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
732 continue;
733
734 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
735 "CMD 0x%02x.%02x received",
736 pkt->hdr.group_id, pkt->hdr.cmd);
737 break;
738 }
739 }
740
741 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
742 struct iwl_rx_cmd_buffer *rxb,
743 struct iwl_rx_packet *pkt)
744 {
745 int i;
746
747 iwl_mvm_rx_check_trigger(mvm, pkt);
748
749 /*
750 * Do the notification wait before RX handlers so
751 * even if the RX handler consumes the RXB we have
752 * access to it in the notification wait entry.
753 */
754 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
755
756 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
757 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
758 struct iwl_async_handler_entry *entry;
759
760 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
761 continue;
762
763 if (!rx_h->async) {
764 rx_h->fn(mvm, rxb);
765 return;
766 }
767
768 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
769 /* we can't do much... */
770 if (!entry)
771 return;
772
773 entry->rxb._page = rxb_steal_page(rxb);
774 entry->rxb._offset = rxb->_offset;
775 entry->rxb._rx_page_order = rxb->_rx_page_order;
776 entry->fn = rx_h->fn;
777 spin_lock(&mvm->async_handlers_lock);
778 list_add_tail(&entry->list, &mvm->async_handlers_list);
779 spin_unlock(&mvm->async_handlers_lock);
780 schedule_work(&mvm->async_handlers_wk);
781 break;
782 }
783 }
784
785 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
786 struct napi_struct *napi,
787 struct iwl_rx_cmd_buffer *rxb)
788 {
789 struct iwl_rx_packet *pkt = rxb_addr(rxb);
790 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
791
792 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
793 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
794 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
795 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
796 else
797 iwl_mvm_rx_common(mvm, rxb, pkt);
798 }
799
800 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
801 struct napi_struct *napi,
802 struct iwl_rx_cmd_buffer *rxb)
803 {
804 struct iwl_rx_packet *pkt = rxb_addr(rxb);
805 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
806
807 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
808 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
809 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
810 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
811 else
812 iwl_mvm_rx_common(mvm, rxb, pkt);
813 }
814
815 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
816 {
817 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
818 unsigned long mq;
819 int q;
820
821 spin_lock_bh(&mvm->queue_info_lock);
822 mq = mvm->queue_info[queue].hw_queue_to_mac80211;
823 spin_unlock_bh(&mvm->queue_info_lock);
824
825 if (WARN_ON_ONCE(!mq))
826 return;
827
828 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
829 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
830 IWL_DEBUG_TX_QUEUES(mvm,
831 "queue %d (mac80211 %d) already stopped\n",
832 queue, q);
833 continue;
834 }
835
836 ieee80211_stop_queue(mvm->hw, q);
837 }
838 }
839
840 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
841 {
842 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
843 unsigned long mq;
844 int q;
845
846 spin_lock_bh(&mvm->queue_info_lock);
847 mq = mvm->queue_info[queue].hw_queue_to_mac80211;
848 spin_unlock_bh(&mvm->queue_info_lock);
849
850 if (WARN_ON_ONCE(!mq))
851 return;
852
853 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
854 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
855 IWL_DEBUG_TX_QUEUES(mvm,
856 "queue %d (mac80211 %d) still stopped\n",
857 queue, q);
858 continue;
859 }
860
861 ieee80211_wake_queue(mvm->hw, q);
862 }
863 }
864
865 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
866 {
867 if (state)
868 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
869 else
870 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
871
872 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
873 }
874
875 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
876 {
877 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
878 bool calibrating = ACCESS_ONCE(mvm->calibrating);
879
880 if (state)
881 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
882 else
883 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
884
885 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
886
887 /* iwl_run_init_mvm_ucode is waiting for results, abort it */
888 if (calibrating)
889 iwl_abort_notification_waits(&mvm->notif_wait);
890
891 /*
892 * Stop the device if we run OPERATIONAL firmware or if we are in the
893 * middle of the calibrations.
894 */
895 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
896 }
897
898 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
899 {
900 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
901 struct ieee80211_tx_info *info;
902
903 info = IEEE80211_SKB_CB(skb);
904 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
905 ieee80211_free_txskb(mvm->hw, skb);
906 }
907
908 struct iwl_mvm_reprobe {
909 struct device *dev;
910 struct work_struct work;
911 };
912
913 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
914 {
915 struct iwl_mvm_reprobe *reprobe;
916
917 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
918 if (device_reprobe(reprobe->dev))
919 dev_err(reprobe->dev, "reprobe failed!\n");
920 kfree(reprobe);
921 module_put(THIS_MODULE);
922 }
923
924 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
925 {
926 struct iwl_mvm *mvm =
927 container_of(work, struct iwl_mvm, fw_dump_wk.work);
928
929 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
930 return;
931
932 mutex_lock(&mvm->mutex);
933
934 /* stop recording */
935 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
936 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
937 } else {
938 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
939 /* wait before we collect the data till the DBGC stop */
940 udelay(100);
941 }
942
943 iwl_mvm_fw_error_dump(mvm);
944
945 /* start recording again if the firmware is not crashed */
946 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
947 mvm->fw->dbg_dest_tlv &&
948 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
949
950 mutex_unlock(&mvm->mutex);
951
952 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
953 }
954
955 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
956 {
957 iwl_abort_notification_waits(&mvm->notif_wait);
958
959 /*
960 * This is a bit racy, but worst case we tell mac80211 about
961 * a stopped/aborted scan when that was already done which
962 * is not a problem. It is necessary to abort any os scan
963 * here because mac80211 requires having the scan cleared
964 * before restarting.
965 * We'll reset the scan_status to NONE in restart cleanup in
966 * the next start() call from mac80211. If restart isn't called
967 * (no fw restart) scan status will stay busy.
968 */
969 iwl_mvm_report_scan_aborted(mvm);
970
971 /*
972 * If we're restarting already, don't cycle restarts.
973 * If INIT fw asserted, it will likely fail again.
974 * If WoWLAN fw asserted, don't restart either, mac80211
975 * can't recover this since we're already half suspended.
976 */
977 if (!mvm->restart_fw && fw_error) {
978 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
979 NULL);
980 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
981 &mvm->status)) {
982 struct iwl_mvm_reprobe *reprobe;
983
984 IWL_ERR(mvm,
985 "Firmware error during reconfiguration - reprobe!\n");
986
987 /*
988 * get a module reference to avoid doing this while unloading
989 * anyway and to avoid scheduling a work with code that's
990 * being removed.
991 */
992 if (!try_module_get(THIS_MODULE)) {
993 IWL_ERR(mvm, "Module is being unloaded - abort\n");
994 return;
995 }
996
997 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
998 if (!reprobe) {
999 module_put(THIS_MODULE);
1000 return;
1001 }
1002 reprobe->dev = mvm->trans->dev;
1003 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1004 schedule_work(&reprobe->work);
1005 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1006 /* don't let the transport/FW power down */
1007 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1008
1009 if (fw_error && mvm->restart_fw > 0)
1010 mvm->restart_fw--;
1011 ieee80211_restart_hw(mvm->hw);
1012 }
1013 }
1014
1015 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1016 {
1017 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1018
1019 iwl_mvm_dump_nic_error_log(mvm);
1020
1021 iwl_mvm_nic_restart(mvm, true);
1022 }
1023
1024 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1025 {
1026 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1027
1028 WARN_ON(1);
1029 iwl_mvm_nic_restart(mvm, true);
1030 }
1031
1032 struct iwl_d0i3_iter_data {
1033 struct iwl_mvm *mvm;
1034 u8 ap_sta_id;
1035 u8 vif_count;
1036 u8 offloading_tid;
1037 bool disable_offloading;
1038 };
1039
1040 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1041 struct ieee80211_vif *vif,
1042 struct iwl_d0i3_iter_data *iter_data)
1043 {
1044 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1045 struct ieee80211_sta *ap_sta;
1046 struct iwl_mvm_sta *mvmsta;
1047 u32 available_tids = 0;
1048 u8 tid;
1049
1050 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1051 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1052 return false;
1053
1054 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
1055 if (IS_ERR_OR_NULL(ap_sta))
1056 return false;
1057
1058 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
1059 spin_lock_bh(&mvmsta->lock);
1060 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1061 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1062
1063 /*
1064 * in case of pending tx packets, don't use this tid
1065 * for offloading in order to prevent reuse of the same
1066 * qos seq counters.
1067 */
1068 if (iwl_mvm_tid_queued(tid_data))
1069 continue;
1070
1071 if (tid_data->state != IWL_AGG_OFF)
1072 continue;
1073
1074 available_tids |= BIT(tid);
1075 }
1076 spin_unlock_bh(&mvmsta->lock);
1077
1078 /*
1079 * disallow protocol offloading if we have no available tid
1080 * (with no pending frames and no active aggregation,
1081 * as we don't handle "holes" properly - the scheduler needs the
1082 * frame's seq number and TFD index to match)
1083 */
1084 if (!available_tids)
1085 return true;
1086
1087 /* for simplicity, just use the first available tid */
1088 iter_data->offloading_tid = ffs(available_tids) - 1;
1089 return false;
1090 }
1091
1092 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1093 struct ieee80211_vif *vif)
1094 {
1095 struct iwl_d0i3_iter_data *data = _data;
1096 struct iwl_mvm *mvm = data->mvm;
1097 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1098 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1099
1100 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1101 if (vif->type != NL80211_IFTYPE_STATION ||
1102 !vif->bss_conf.assoc)
1103 return;
1104
1105 /*
1106 * in case of pending tx packets or active aggregations,
1107 * avoid offloading features in order to prevent reuse of
1108 * the same qos seq counters.
1109 */
1110 if (iwl_mvm_disallow_offloading(mvm, vif, data))
1111 data->disable_offloading = true;
1112
1113 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1114 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading, flags);
1115
1116 /*
1117 * on init/association, mvm already configures POWER_TABLE_CMD
1118 * and REPLY_MCAST_FILTER_CMD, so currently don't
1119 * reconfigure them (we might want to use different
1120 * params later on, though).
1121 */
1122 data->ap_sta_id = mvmvif->ap_sta_id;
1123 data->vif_count++;
1124 }
1125
1126 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1127 struct iwl_wowlan_config_cmd *cmd,
1128 struct iwl_d0i3_iter_data *iter_data)
1129 {
1130 struct ieee80211_sta *ap_sta;
1131 struct iwl_mvm_sta *mvm_ap_sta;
1132
1133 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1134 return;
1135
1136 rcu_read_lock();
1137
1138 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1139 if (IS_ERR_OR_NULL(ap_sta))
1140 goto out;
1141
1142 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1143 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1144 cmd->offloading_tid = iter_data->offloading_tid;
1145
1146 /*
1147 * The d0i3 uCode takes care of the nonqos counters,
1148 * so configure only the qos seq ones.
1149 */
1150 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1151 out:
1152 rcu_read_unlock();
1153 }
1154
1155 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1156 {
1157 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1158 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1159 int ret;
1160 struct iwl_d0i3_iter_data d0i3_iter_data = {
1161 .mvm = mvm,
1162 };
1163 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1164 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1165 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1166 IWL_WOWLAN_WAKEUP_LINK_CHANGE |
1167 IWL_WOWLAN_WAKEUP_BCN_FILTERING),
1168 };
1169 struct iwl_d3_manager_config d3_cfg_cmd = {
1170 .min_sleep_time = cpu_to_le32(1000),
1171 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1172 };
1173
1174 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1175
1176 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1177
1178 /*
1179 * iwl_mvm_ref_sync takes a reference before checking the flag.
1180 * so by checking there is no held reference we prevent a state
1181 * in which iwl_mvm_ref_sync continues successfully while we
1182 * configure the firmware to enter d0i3
1183 */
1184 if (iwl_mvm_ref_taken(mvm)) {
1185 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1186 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1187 wake_up(&mvm->d0i3_exit_waitq);
1188 return 1;
1189 }
1190
1191 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1192 IEEE80211_IFACE_ITER_NORMAL,
1193 iwl_mvm_enter_d0i3_iterator,
1194 &d0i3_iter_data);
1195 if (d0i3_iter_data.vif_count == 1) {
1196 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1197 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1198 } else {
1199 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1200 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1201 mvm->d0i3_offloading = false;
1202 }
1203
1204 /* make sure we have no running tx while configuring the seqno */
1205 synchronize_net();
1206
1207 /* Flush the hw queues, in case something got queued during entry */
1208 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1209 if (ret)
1210 return ret;
1211
1212 /* configure wowlan configuration only if needed */
1213 if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1214 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1215 &d0i3_iter_data);
1216
1217 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1218 sizeof(wowlan_config_cmd),
1219 &wowlan_config_cmd);
1220 if (ret)
1221 return ret;
1222 }
1223
1224 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1225 flags | CMD_MAKE_TRANS_IDLE,
1226 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1227 }
1228
1229 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1230 struct ieee80211_vif *vif)
1231 {
1232 struct iwl_mvm *mvm = _data;
1233 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1234
1235 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1236 if (vif->type != NL80211_IFTYPE_STATION ||
1237 !vif->bss_conf.assoc)
1238 return;
1239
1240 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1241 }
1242
1243 struct iwl_mvm_wakeup_reason_iter_data {
1244 struct iwl_mvm *mvm;
1245 u32 wakeup_reasons;
1246 };
1247
1248 static void iwl_mvm_d0i3_wakeup_reason_iter(void *_data, u8 *mac,
1249 struct ieee80211_vif *vif)
1250 {
1251 struct iwl_mvm_wakeup_reason_iter_data *data = _data;
1252 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1253
1254 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc &&
1255 data->mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) {
1256 if (data->wakeup_reasons &
1257 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1258 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1259 else
1260 ieee80211_beacon_loss(vif);
1261 }
1262 }
1263
1264 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1265 {
1266 struct ieee80211_sta *sta = NULL;
1267 struct iwl_mvm_sta *mvm_ap_sta;
1268 int i;
1269 bool wake_queues = false;
1270
1271 lockdep_assert_held(&mvm->mutex);
1272
1273 spin_lock_bh(&mvm->d0i3_tx_lock);
1274
1275 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1276 goto out;
1277
1278 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1279
1280 /* get the sta in order to update seq numbers and re-enqueue skbs */
1281 sta = rcu_dereference_protected(
1282 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1283 lockdep_is_held(&mvm->mutex));
1284
1285 if (IS_ERR_OR_NULL(sta)) {
1286 sta = NULL;
1287 goto out;
1288 }
1289
1290 if (mvm->d0i3_offloading && qos_seq) {
1291 /* update qos seq numbers if offloading was enabled */
1292 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1293 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1294 u16 seq = le16_to_cpu(qos_seq[i]);
1295 /* firmware stores last-used one, we store next one */
1296 seq += 0x10;
1297 mvm_ap_sta->tid_data[i].seq_number = seq;
1298 }
1299 }
1300 out:
1301 /* re-enqueue (or drop) all packets */
1302 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1303 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1304
1305 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1306 ieee80211_free_txskb(mvm->hw, skb);
1307
1308 /* if the skb_queue is not empty, we need to wake queues */
1309 wake_queues = true;
1310 }
1311 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1312 wake_up(&mvm->d0i3_exit_waitq);
1313 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1314 if (wake_queues)
1315 ieee80211_wake_queues(mvm->hw);
1316
1317 spin_unlock_bh(&mvm->d0i3_tx_lock);
1318 }
1319
1320 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1321 {
1322 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1323 struct iwl_host_cmd get_status_cmd = {
1324 .id = WOWLAN_GET_STATUSES,
1325 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1326 };
1327 struct iwl_wowlan_status *status;
1328 int ret;
1329 u32 handled_reasons, wakeup_reasons = 0;
1330 __le16 *qos_seq = NULL;
1331
1332 mutex_lock(&mvm->mutex);
1333 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1334 if (ret)
1335 goto out;
1336
1337 if (!get_status_cmd.resp_pkt)
1338 goto out;
1339
1340 status = (void *)get_status_cmd.resp_pkt->data;
1341 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1342 qos_seq = status->qos_seq_ctr;
1343
1344 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1345
1346 handled_reasons = IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1347 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1348 if (wakeup_reasons & handled_reasons) {
1349 struct iwl_mvm_wakeup_reason_iter_data data = {
1350 .mvm = mvm,
1351 .wakeup_reasons = wakeup_reasons,
1352 };
1353
1354 ieee80211_iterate_active_interfaces(
1355 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1356 iwl_mvm_d0i3_wakeup_reason_iter, &data);
1357 }
1358 out:
1359 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1360
1361 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1362 wakeup_reasons);
1363
1364 /* qos_seq might point inside resp_pkt, so free it only now */
1365 if (get_status_cmd.resp_pkt)
1366 iwl_free_resp(&get_status_cmd);
1367
1368 /* the FW might have updated the regdomain */
1369 iwl_mvm_update_changed_regdom(mvm);
1370
1371 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1372 mutex_unlock(&mvm->mutex);
1373 }
1374
1375 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1376 {
1377 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1378 CMD_WAKE_UP_TRANS;
1379 int ret;
1380
1381 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1382
1383 mutex_lock(&mvm->d0i3_suspend_mutex);
1384 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1385 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1386 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1387 mutex_unlock(&mvm->d0i3_suspend_mutex);
1388 return 0;
1389 }
1390 mutex_unlock(&mvm->d0i3_suspend_mutex);
1391
1392 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1393 if (ret)
1394 goto out;
1395
1396 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1397 IEEE80211_IFACE_ITER_NORMAL,
1398 iwl_mvm_exit_d0i3_iterator,
1399 mvm);
1400 out:
1401 schedule_work(&mvm->d0i3_exit_work);
1402 return ret;
1403 }
1404
1405 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1406 {
1407 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1408
1409 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1410 return _iwl_mvm_exit_d0i3(mvm);
1411 }
1412
1413 #define IWL_MVM_COMMON_OPS \
1414 /* these could be differentiated */ \
1415 .queue_full = iwl_mvm_stop_sw_queue, \
1416 .queue_not_full = iwl_mvm_wake_sw_queue, \
1417 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
1418 .free_skb = iwl_mvm_free_skb, \
1419 .nic_error = iwl_mvm_nic_error, \
1420 .cmd_queue_full = iwl_mvm_cmd_queue_full, \
1421 .nic_config = iwl_mvm_nic_config, \
1422 .enter_d0i3 = iwl_mvm_enter_d0i3, \
1423 .exit_d0i3 = iwl_mvm_exit_d0i3, \
1424 /* as we only register one, these MUST be common! */ \
1425 .start = iwl_op_mode_mvm_start, \
1426 .stop = iwl_op_mode_mvm_stop
1427
1428 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1429 IWL_MVM_COMMON_OPS,
1430 .rx = iwl_mvm_rx,
1431 };
1432
1433 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1434 struct napi_struct *napi,
1435 struct iwl_rx_cmd_buffer *rxb,
1436 unsigned int queue)
1437 {
1438 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1439
1440 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
1441 }
1442
1443 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1444 IWL_MVM_COMMON_OPS,
1445 .rx = iwl_mvm_rx_mq,
1446 .rx_rss = iwl_mvm_rx_mq_rss,
1447 };
Linux kernel - Deliverables
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