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iwlwifi: 8000: change PNVM in case it doesn't match to the HW step
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
CommitLineData
8ca151b5
JB		 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 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 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
410dc5aa 26 * in the file called COPYING.
8ca151b5
JB		 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 *
51368bf7 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 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/kernel.h>
66#include <linux/slab.h>
67#include <linux/skbuff.h>
68#include <linux/netdevice.h>
69#include <linux/etherdevice.h>
f0c2646a 70#include <linux/ip.h>
2ee8f021 71#include <linux/if_arp.h>
aadede6e 72#include <linux/devcoredump.h>
8ca151b5 73#include <net/mac80211.h>
7b1dd048 74#include <net/ieee80211_radiotap.h>
f0c2646a 75#include <net/tcp.h>
8ca151b5
JB		 76
77#include "iwl-op-mode.h"
78#include "iwl-io.h"
79#include "mvm.h"
80#include "sta.h"
81#include "time-event.h"
82#include "iwl-eeprom-parse.h"
83#include "fw-api-scan.h"
84#include "iwl-phy-db.h"
507cadf2 85#include "testmode.h"
655e6d6d
EG		 86#include "iwl-fw-error-dump.h"
87#include "iwl-prph.h"
363039be 88#include "iwl-csr.h"
88931cc9 89#include "iwl-nvm-parse.h"
8ca151b5
JB		 90
91static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
92 {
93 .max = 1,
8eb38710 94 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 95 },
3c15a0fb
JB		 96 {
97 .max = 1,
8eb38710
IP		 98 .types = BIT(NL80211_IFTYPE_AP) |
99 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 100 BIT(NL80211_IFTYPE_P2P_GO),
101 },
102 {
103 .max = 1,
104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
105 },
8ca151b5
JB		 106};
107
108static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
109 {
2624a5ca 110 .num_different_channels = 2,
8ca151b5
JB		 111 .max_interfaces = 3,
112 .limits = iwl_mvm_limits,
113 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
114 },
115};
116
f0c2646a
JB		 117#ifdef CONFIG_PM_SLEEP
118static const struct nl80211_wowlan_tcp_data_token_feature
119iwl_mvm_wowlan_tcp_token_feature = {
120 .min_len = 0,
121 .max_len = 255,
122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
123};
124
125static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
126 .tok = &iwl_mvm_wowlan_tcp_token_feature,
127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .data_interval_max = 65535, /* __le16 in API */
132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
133 sizeof(struct ethhdr) -
134 sizeof(struct iphdr) -
135 sizeof(struct tcphdr),
136 .seq = true,
137};
138#endif
139
77736923 140#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 141/*
142 * Use the reserved field to indicate magic values.
143 * these values will only be used internally by the driver,
144 * and won't make it to the fw (reserved will be 0).
145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
146 * be the vif's ip address. in case there is not a single
147 * ip address (0, or more than 1), this attribute will
148 * be skipped.
149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
150 * the LSB bytes of the vif's mac address
151 */
152enum {
153 BC_FILTER_MAGIC_NONE = 0,
154 BC_FILTER_MAGIC_IP,
155 BC_FILTER_MAGIC_MAC,
156};
157
77736923
EP		 158static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
159 {
160 /* arp */
161 .discard = 0,
162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
163 .attrs = {
164 {
165 /* frame type - arp, hw type - ethernet */
166 .offset_type =
167 BCAST_FILTER_OFFSET_PAYLOAD_START,
168 .offset = sizeof(rfc1042_header),
169 .val = cpu_to_be32(0x08060001),
170 .mask = cpu_to_be32(0xffffffff),
171 },
2ee8f021
EP		 172 {
173 /* arp dest ip */
174 .offset_type =
175 BCAST_FILTER_OFFSET_PAYLOAD_START,
176 .offset = sizeof(rfc1042_header) + 2 +
177 sizeof(struct arphdr) +
178 ETH_ALEN + sizeof(__be32) +
179 ETH_ALEN,
180 .mask = cpu_to_be32(0xffffffff),
181 /* mark it as special field */
182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
183 },
184 },
185 },
186 {
187 /* dhcp offer bcast */
188 .discard = 0,
189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
190 .attrs = {
191 {
192 /* udp dest port - 68 (bootp client)*/
193 .offset_type = BCAST_FILTER_OFFSET_IP_END,
194 .offset = offsetof(struct udphdr, dest),
195 .val = cpu_to_be32(0x00440000),
196 .mask = cpu_to_be32(0xffff0000),
197 },
198 {
199 /* dhcp - lsb bytes of client hw address */
200 .offset_type = BCAST_FILTER_OFFSET_IP_END,
201 .offset = 38,
202 .mask = cpu_to_be32(0xffffffff),
203 /* mark it as special field */
204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
205 },
77736923
EP		 206 },
207 },
208 /* last filter must be empty */
209 {},
210};
211#endif
212
7498cf4c
EP		 213void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
214{
7bb426ea 215 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 216 return;
217
218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
576eeee9
EP		 219 spin_lock_bh(&mvm->refs_lock);
220 mvm->refs[ref_type]++;
221 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 222 iwl_trans_ref(mvm->trans);
223}
224
225void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
226{
7bb426ea 227 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 228 return;
229
230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
576eeee9
EP		 231 spin_lock_bh(&mvm->refs_lock);
232 WARN_ON(!mvm->refs[ref_type]--);
233 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 234 iwl_trans_unref(mvm->trans);
235}
236
576eeee9
EP		 237static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
238 enum iwl_mvm_ref_type except_ref)
7498cf4c 239{
576eeee9 240 int i, j;
7498cf4c 241
7bb426ea 242 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 243 return;
244
576eeee9
EP		 245 spin_lock_bh(&mvm->refs_lock);
246 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
247 if (except_ref == i || !mvm->refs[i])
7498cf4c
EP		 248 continue;
249
576eeee9
EP		 250 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
251 i, mvm->refs[i]);
252 for (j = 0; j < mvm->refs[i]; j++)
253 iwl_trans_unref(mvm->trans);
254 mvm->refs[i] = 0;
7498cf4c 255 }
576eeee9 256 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 257}
258
f4cf8680
EP		 259bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
260{
261 int i;
262 bool taken = false;
263
264 if (!iwl_mvm_is_d0i3_supported(mvm))
265 return true;
266
267 spin_lock_bh(&mvm->refs_lock);
268 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
269 if (mvm->refs[i]) {
270 taken = true;
271 break;
272 }
273 }
274 spin_unlock_bh(&mvm->refs_lock);
275
276 return taken;
277}
278
576eeee9 279int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
d40fc489
GG		 280{
281 iwl_mvm_ref(mvm, ref_type);
282
283 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
284 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
285 HZ)) {
286 WARN_ON_ONCE(1);
287 iwl_mvm_unref(mvm, ref_type);
288 return -EIO;
289 }
290
291 return 0;
292}
293
fe0f2de3
IP		 294static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
295{
296 int i;
297
298 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
299 for (i = 0; i < NUM_PHY_CTX; i++) {
300 mvm->phy_ctxts[i].id = i;
301 mvm->phy_ctxts[i].ref = 0;
302 }
303}
304
88931cc9 305struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
8ba2d7a1 306 const char *alpha2,
47c8b154
JD		 307 enum iwl_mcc_source src_id,
308 bool *changed)
88931cc9
AN		 309{
310 struct ieee80211_regdomain *regd = NULL;
311 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
313 struct iwl_mcc_update_resp *resp;
314
315 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
316
8ba2d7a1 317 lockdep_assert_held(&mvm->mutex);
88931cc9 318
8ba2d7a1 319 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
88931cc9
AN		 320 if (IS_ERR_OR_NULL(resp)) {
321 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
322 PTR_RET(resp));
8ba2d7a1 323 goto out;
88931cc9
AN		 324 }
325
47c8b154
JD		 326 if (changed)
327 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
328
162ee3c9 329 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
88931cc9
AN		 330 __le32_to_cpu(resp->n_channels),
331 resp->channels,
332 __le16_to_cpu(resp->mcc));
8ba2d7a1
EH		 333 /* Store the return source id */
334 src_id = resp->source_id;
88931cc9
AN		 335 kfree(resp);
336 if (IS_ERR_OR_NULL(regd)) {
337 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
8ba2d7a1
EH		 338 PTR_RET(regd));
339 goto out;
88931cc9
AN		 340 }
341
8ba2d7a1
EH		 342 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
343 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
88931cc9 344 mvm->lar_regdom_set = true;
8ba2d7a1 345 mvm->mcc_src = src_id;
88931cc9 346
8ba2d7a1 347out:
88931cc9
AN		 348 return regd;
349}
350
47c8b154
JD		 351void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
352{
353 bool changed;
354 struct ieee80211_regdomain *regd;
355
356 if (!iwl_mvm_is_lar_supported(mvm))
357 return;
358
359 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
360 if (!IS_ERR_OR_NULL(regd)) {
361 /* only update the regulatory core if changed */
362 if (changed)
363 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
364
365 kfree(regd);
366 }
367}
368
369struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
370 bool *changed)
8ba2d7a1
EH		 371{
372 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
373 iwl_mvm_is_wifi_mcc_supported(mvm) ?
374 MCC_SOURCE_GET_CURRENT :
47c8b154 375 MCC_SOURCE_OLD_FW, changed);
8ba2d7a1
EH		 376}
377
378int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
379{
380 enum iwl_mcc_source used_src;
381 struct ieee80211_regdomain *regd;
382 const struct ieee80211_regdomain *r =
383 rtnl_dereference(mvm->hw->wiphy->regd);
384
385 if (!r)
386 return 0;
387
388 /* save the last source in case we overwrite it below */
389 used_src = mvm->mcc_src;
390 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
391 /* Notify the firmware we support wifi location updates */
47c8b154 392 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
8ba2d7a1
EH		 393 if (!IS_ERR_OR_NULL(regd))
394 kfree(regd);
395 }
396
397 /* Now set our last stored MCC and source */
47c8b154 398 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, NULL);
8ba2d7a1
EH		 399 if (IS_ERR_OR_NULL(regd))
400 return -EIO;
401
402 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
403 kfree(regd);
404
405 return 0;
406}
407
8ca151b5
JB		 408int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
409{
410 struct ieee80211_hw *hw = mvm->hw;
831e85f3 411 int num_mac, ret, i;
8ca151b5
JB		 412
413 /* Tell mac80211 our characteristics */
414 hw->flags = IEEE80211_HW_SIGNAL_DBM |
415 IEEE80211_HW_SPECTRUM_MGMT |
416 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
417 IEEE80211_HW_QUEUE_CONTROL |
418 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 419 IEEE80211_HW_SUPPORTS_PS |
420 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd 421 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed 422 IEEE80211_HW_TIMING_BEACON_ONLY |
147fc9be 423 IEEE80211_HW_CONNECTION_MONITOR |
b71d9c8a
IY		 424 IEEE80211_HW_CHANCTX_STA_CSA |
425 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
8ca151b5 426
19e737c9 427 hw->queues = mvm->first_agg_queue;
398e8c6c 428 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 429 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
430 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
339b3086
ES		 431 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
432 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
8ca151b5 433 hw->rate_control_algorithm = "iwl-mvm-rs";
848955cc
JB		 434 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
435 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
8ca151b5
JB		 436
437 /*
438 * Enable 11w if advertised by firmware and software crypto
439 * is not enabled (as the firmware will interpret some mgmt
440 * packets, so enabling it with software crypto isn't safe)
441 */
442 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
443 !iwlwifi_mod_params.sw_crypto)
444 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
445
1f940386
LC		 446 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
447 hw->wiphy->features |=
448 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
449 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
fb98be5e 450
8ca151b5
JB		 451 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
452 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 453 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 454
455 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 456 BIT(NL80211_IFTYPE_P2P_CLIENT) |
457 BIT(NL80211_IFTYPE_AP) |
458 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 459 BIT(NL80211_IFTYPE_P2P_DEVICE) |
460 BIT(NL80211_IFTYPE_ADHOC);
5023d966 461
a2f73b6c 462 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
8ba2d7a1
EH		 463 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
464 if (iwl_mvm_is_lar_supported(mvm))
465 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
466 else
467 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
468 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 469
3e56eadf
JB		 470 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
471 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
472
94bbed72 473 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
bd3398e2 474
8ca151b5
JB		 475 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
476 hw->wiphy->n_iface_combinations =
477 ARRAY_SIZE(iwl_mvm_iface_combinations);
478
c451e6d4 479 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5 480 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
f1a68542
EG		 481 /* we can compensate an offset of up to 3 channels = 15 MHz */
482 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
8ca151b5
JB		 483
484 /* Extract MAC address */
485 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
486 hw->wiphy->addresses = mvm->addresses;
487 hw->wiphy->n_addresses = 1;
831e85f3
IP		 488
489 /* Extract additional MAC addresses if available */
490 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
491 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
492
493 for (i = 1; i < num_mac; i++) {
494 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 495 ETH_ALEN);
831e85f3 496 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 497 hw->wiphy->n_addresses++;
498 }
499
fe0f2de3
IP		 500 iwl_mvm_reset_phy_ctxts(mvm);
501
48849a41 502 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
20f1a5de 503
8ca151b5
JB		 504 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
505
506 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
507 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
508 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
3d44eebf 509 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
8ca151b5
JB		 510 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
511 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
512
c9faccc9
ES		 513 if ((mvm->fw->ucode_capa.capa[0] &
514 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
515 (mvm->fw->ucode_capa.api[0] &
516 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
3d44eebf
ES		 517 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
518 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
519 }
520
8ca151b5
JB		 521 hw->wiphy->hw_version = mvm->trans->hw_id;
522
ade50652 523 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 524 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
525 else
526 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
527
6efaaf33
EG		 528 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
529 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
530 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
531 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
532 /* we create the 802.11 header and zero length SSID IE. */
533 hw->wiphy->max_sched_scan_ie_len =
534 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
535 }
35a000b7 536
8ca151b5 537 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 538 NL80211_FEATURE_LOW_PRIORITY_SCAN |
0d8614b4
EP		 539 NL80211_FEATURE_P2P_GO_OPPPS |
540 NL80211_FEATURE_DYNAMIC_SMPS |
9b5452fd
EG		 541 NL80211_FEATURE_STATIC_SMPS |
542 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
8ca151b5 543
f1daa00e
AO		 544 if (mvm->fw->ucode_capa.capa[0] &
545 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
546 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
226bcd48
AK		 547 if (mvm->fw->ucode_capa.capa[0] &
548 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
549 hw->wiphy->features |= NL80211_FEATURE_QUIET;
f1daa00e 550
73897bd1
AO		 551 if (mvm->fw->ucode_capa.capa[0] &
552 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
553 hw->wiphy->features |=
554 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
555
556 if (mvm->fw->ucode_capa.capa[0] &
557 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
558 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
559
8ca151b5
JB		 560 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
561
e36e5433 562 /* currently FW API supports only one optional cipher scheme */
9ddca860 563 if (mvm->fw->cs[0].cipher) {
e36e5433 564 mvm->hw->n_cipher_schemes = 1;
9ddca860 565 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
e36e5433
MS		 566 }
567
8ca151b5 568#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 569 if (iwl_mvm_is_d0i3_supported(mvm) &&
570 device_can_wakeup(mvm->trans->dev)) {
571 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
572 hw->wiphy->wowlan = &mvm->wowlan;
91742449
EP		 573 }
574
575 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 576 mvm->trans->ops->d3_suspend &&
577 mvm->trans->ops->d3_resume &&
578 device_can_wakeup(mvm->trans->dev)) {
91742449
EP		 579 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
580 WIPHY_WOWLAN_DISCONNECT |
581 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
582 WIPHY_WOWLAN_RFKILL_RELEASE |
583 WIPHY_WOWLAN_NET_DETECT;
8ca151b5 584 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 585 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
586 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
587 WIPHY_WOWLAN_4WAY_HANDSHAKE;
588
589 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
590 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
591 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
c55385f5 592 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
964dc9e2
JB		 593 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
594 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 595 }
596#endif
597
77736923
EP		 598#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
599 /* assign default bcast filtering configuration */
600 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
601#endif
602
8ca151b5
JB		 603 ret = iwl_mvm_leds_init(mvm);
604 if (ret)
605 return ret;
606
d8f1c515
AN		 607 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
608 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
609 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
610 }
611
1d3c3f63
AN		 612 if (mvm->fw->ucode_capa.capa[0] &
613 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
614 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
615 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
616 }
617
b7327d89
EG		 618 ret = ieee80211_register_hw(mvm->hw);
619 if (ret)
620 iwl_mvm_leds_exit(mvm);
621
622 return ret;
8ca151b5
JB		 623}
624
b2492501
AN		 625static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
626 struct ieee80211_sta *sta,
627 struct sk_buff *skb)
628{
629 struct iwl_mvm_sta *mvmsta;
630 bool defer = false;
631
632 /*
633 * double check the IN_D0I3 flag both before and after
634 * taking the spinlock, in order to prevent taking
635 * the spinlock when not needed.
636 */
637 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
638 return false;
639
640 spin_lock(&mvm->d0i3_tx_lock);
641 /*
642 * testing the flag again ensures the skb dequeue
643 * loop (on d0i3 exit) hasn't run yet.
644 */
645 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
646 goto out;
647
648 mvmsta = iwl_mvm_sta_from_mac80211(sta);
649 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
650 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
651 goto out;
652
653 __skb_queue_tail(&mvm->d0i3_tx, skb);
654 ieee80211_stop_queues(mvm->hw);
655
656 /* trigger wakeup */
657 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
658 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
659
660 defer = true;
661out:
662 spin_unlock(&mvm->d0i3_tx_lock);
663 return defer;
664}
665
8ca151b5
JB		 666static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
667 struct ieee80211_tx_control *control,
668 struct sk_buff *skb)
669{
670 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 671 struct ieee80211_sta *sta = control->sta;
672 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
673 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 674
9ee718aa
EL		 675 if (iwl_mvm_is_radio_killed(mvm)) {
676 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 677 goto drop;
678 }
679
398e8c6c 680 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 681 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
682 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 683 goto drop;
684
3e56eadf
JB		 685 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
686 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
687 ieee80211_is_mgmt(hdr->frame_control) &&
688 !ieee80211_is_deauth(hdr->frame_control) &&
689 !ieee80211_is_disassoc(hdr->frame_control) &&
690 !ieee80211_is_action(hdr->frame_control)))
691 sta = NULL;
692
693 if (sta) {
b2492501
AN		 694 if (iwl_mvm_defer_tx(mvm, sta, skb))
695 return;
3e56eadf 696 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 697 goto drop;
698 return;
699 }
700
701 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
702 goto drop;
703 return;
704 drop:
705 ieee80211_free_txskb(hw, skb);
706}
707
205e2210
EG		 708static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
709{
710 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
711 return false;
712 return true;
713}
714
715static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
716{
717 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
718 return false;
719 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
720 return true;
721
722 /* enabled by default */
723 return true;
724}
725
8ca151b5
JB		 726static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
727 struct ieee80211_vif *vif,
728 enum ieee80211_ampdu_mlme_action action,
729 struct ieee80211_sta *sta, u16 tid,
730 u16 *ssn, u8 buf_size)
731{
732 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
733 int ret;
b2492501 734 bool tx_agg_ref = false;
8ca151b5
JB		 735
736 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
737 sta->addr, tid, action);
738
739 if (!(mvm->nvm_data->sku_cap_11n_enable))
740 return -EACCES;
741
b2492501 742 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 743 switch (action) {
744 case IEEE80211_AMPDU_TX_START:
745 case IEEE80211_AMPDU_TX_STOP_CONT:
746 case IEEE80211_AMPDU_TX_STOP_FLUSH:
747 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
748 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 749 /*
9256c205
EP		 750 * for tx start, wait synchronously until D0i3 exit to
751 * get the correct sequence number for the tid.
752 * additionally, some other ampdu actions use direct
753 * target access, which is not handled automatically
754 * by the trans layer (unlike commands), so wait for
755 * d0i3 exit in these cases as well.
b2492501 756 */
d40fc489
GG		 757 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
758 if (ret)
759 return ret;
760
761 tx_agg_ref = true;
9256c205
EP		 762 break;
763 default:
764 break;
b2492501
AN		 765 }
766
8ca151b5
JB		 767 mutex_lock(&mvm->mutex);
768
769 switch (action) {
770 case IEEE80211_AMPDU_RX_START:
205e2210 771 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 772 ret = -EINVAL;
773 break;
774 }
775 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
776 break;
777 case IEEE80211_AMPDU_RX_STOP:
778 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
779 break;
780 case IEEE80211_AMPDU_TX_START:
205e2210 781 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 782 ret = -EINVAL;
783 break;
784 }
8ca151b5
JB		 785 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
786 break;
787 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 788 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
789 break;
8ca151b5
JB		 790 case IEEE80211_AMPDU_TX_STOP_FLUSH:
791 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 792 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 793 break;
794 case IEEE80211_AMPDU_TX_OPERATIONAL:
795 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
796 break;
797 default:
798 WARN_ON_ONCE(1);
799 ret = -EINVAL;
800 break;
801 }
802 mutex_unlock(&mvm->mutex);
803
b2492501
AN		 804 /*
805 * If the tid is marked as started, we won't use it for offloaded
806 * traffic on the next D0i3 entry. It's safe to unref.
807 */
808 if (tx_agg_ref)
809 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
810
8ca151b5
JB		 811 return ret;
812}
813
814static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
815 struct ieee80211_vif *vif)
816{
817 struct iwl_mvm *mvm = data;
818 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
819
820 mvmvif->uploaded = false;
821 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
822
8ca151b5
JB		 823 spin_lock_bh(&mvm->time_event_lock);
824 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
825 spin_unlock_bh(&mvm->time_event_lock);
826
fe0f2de3 827 mvmvif->phy_ctxt = NULL;
8a275bad 828 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 829}
830
aadede6e
JB		 831static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
832 const void *data, size_t datalen)
833{
834 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
835 ssize_t bytes_read;
836 ssize_t bytes_read_trans;
837
838 if (offset < dump_ptrs->op_mode_len) {
839 bytes_read = min_t(ssize_t, count,
840 dump_ptrs->op_mode_len - offset);
841 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
842 bytes_read);
843 offset += bytes_read;
844 count -= bytes_read;
845
846 if (count == 0)
847 return bytes_read;
848 } else {
849 bytes_read = 0;
850 }
851
852 if (!dump_ptrs->trans_ptr)
853 return bytes_read;
854
855 offset -= dump_ptrs->op_mode_len;
856 bytes_read_trans = min_t(ssize_t, count,
857 dump_ptrs->trans_ptr->len - offset);
858 memcpy(buffer + bytes_read,
859 (u8 *)dump_ptrs->trans_ptr->data + offset,
860 bytes_read_trans);
861
862 return bytes_read + bytes_read_trans;
863}
864
865static void iwl_mvm_free_coredump(const void *data)
866{
867 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
868
869 vfree(fw_error_dump->op_mode_ptr);
870 vfree(fw_error_dump->trans_ptr);
871 kfree(fw_error_dump);
872}
873
04fd2c28
LK		 874static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
875 struct iwl_fw_error_dump_data **dump_data)
876{
877 struct iwl_fw_error_dump_fifo *fifo_hdr;
878 u32 *fifo_data;
879 u32 fifo_len;
880 unsigned long flags;
881 int i, j;
882
883 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
884 return;
885
886 /* Pull RXF data from all RXFs */
887 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
888 /*
889 * Keep aside the additional offset that might be needed for
890 * next RXF
891 */
892 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
893
894 fifo_hdr = (void *)(*dump_data)->data;
895 fifo_data = (void *)fifo_hdr->data;
896 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
897
898 /* No need to try to read the data if the length is 0 */
899 if (fifo_len == 0)
900 continue;
901
902 /* Add a TLV for the RXF */
903 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
904 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
905
906 fifo_hdr->fifo_num = cpu_to_le32(i);
907 fifo_hdr->available_bytes =
908 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
909 RXF_RD_D_SPACE +
910 offset_diff));
911 fifo_hdr->wr_ptr =
912 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
913 RXF_RD_WR_PTR +
914 offset_diff));
915 fifo_hdr->rd_ptr =
916 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
917 RXF_RD_RD_PTR +
918 offset_diff));
919 fifo_hdr->fence_ptr =
920 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
921 RXF_RD_FENCE_PTR +
922 offset_diff));
923 fifo_hdr->fence_mode =
924 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
925 RXF_SET_FENCE_MODE +
926 offset_diff));
927
928 /* Lock fence */
929 iwl_trans_write_prph(mvm->trans,
930 RXF_SET_FENCE_MODE + offset_diff, 0x1);
931 /* Set fence pointer to the same place like WR pointer */
932 iwl_trans_write_prph(mvm->trans,
933 RXF_LD_WR2FENCE + offset_diff, 0x1);
934 /* Set fence offset */
935 iwl_trans_write_prph(mvm->trans,
936 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
937 0x0);
938
939 /* Read FIFO */
940 fifo_len /= sizeof(u32); /* Size in DWORDS */
941 for (j = 0; j < fifo_len; j++)
942 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
943 RXF_FIFO_RD_FENCE_INC +
944 offset_diff);
945 *dump_data = iwl_fw_error_next_data(*dump_data);
946 }
947
948 /* Pull TXF data from all TXFs */
949 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
950 /* Mark the number of TXF we're pulling now */
951 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
952
953 fifo_hdr = (void *)(*dump_data)->data;
954 fifo_data = (void *)fifo_hdr->data;
955 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
956
957 /* No need to try to read the data if the length is 0 */
958 if (fifo_len == 0)
959 continue;
960
961 /* Add a TLV for the FIFO */
962 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
963 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
964
965 fifo_hdr->fifo_num = cpu_to_le32(i);
966 fifo_hdr->available_bytes =
967 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
968 TXF_FIFO_ITEM_CNT));
969 fifo_hdr->wr_ptr =
970 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
971 TXF_WR_PTR));
972 fifo_hdr->rd_ptr =
973 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
974 TXF_RD_PTR));
975 fifo_hdr->fence_ptr =
976 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
977 TXF_FENCE_PTR));
978 fifo_hdr->fence_mode =
979 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
980 TXF_LOCK_FENCE));
981
982 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
983 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
984 TXF_WR_PTR);
985
986 /* Dummy-read to advance the read pointer to the head */
987 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
988
989 /* Read FIFO */
990 fifo_len /= sizeof(u32); /* Size in DWORDS */
991 for (j = 0; j < fifo_len; j++)
992 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
993 TXF_READ_MODIFY_DATA);
994 *dump_data = iwl_fw_error_next_data(*dump_data);
995 }
996
997 iwl_trans_release_nic_access(mvm->trans, &flags);
998}
999
b6eaa45a
EG		 1000void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1001{
1002 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1003 !mvm->fw_dump_desc)
1004 return;
1005
1006 kfree(mvm->fw_dump_desc);
1007 mvm->fw_dump_desc = NULL;
1008}
1009
e539761d
LK		 1010#define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
1011#define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
1012
4bfa47f3 1013void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
655e6d6d
EG		 1014{
1015 struct iwl_fw_error_dump_file *dump_file;
1016 struct iwl_fw_error_dump_data *dump_data;
1017 struct iwl_fw_error_dump_info *dump_info;
a549b296 1018 struct iwl_fw_error_dump_mem *dump_mem;
b6eaa45a 1019 struct iwl_fw_error_dump_trigger_desc *dump_trig;
48eb7b34 1020 struct iwl_mvm_dump_ptrs *fw_error_dump;
655e6d6d 1021 u32 sram_len, sram_ofs;
04fd2c28 1022 u32 file_len, fifo_data_len = 0;
addfaada 1023 u32 smem_len = mvm->cfg->smem_len;
86138324 1024 u32 sram2_len = mvm->cfg->dccm2_len;
655e6d6d
EG		 1025
1026 lockdep_assert_held(&mvm->mutex);
1027
aadede6e 1028 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
48eb7b34
EG		 1029 if (!fw_error_dump)
1030 return;
1031
f53bf4c7
LK		 1032 /* SRAM - include stack CCM if driver knows the values for it */
1033 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1034 const struct fw_img *img;
1035
1036 img = &mvm->fw->img[mvm->cur_ucode];
1037 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1038 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1039 } else {
1040 sram_ofs = mvm->cfg->dccm_offset;
1041 sram_len = mvm->cfg->dccm_len;
1042 }
655e6d6d 1043
04fd2c28
LK		 1044 /* reading RXF/TXF sizes */
1045 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1046 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1047 int i;
1048
1049 fifo_data_len = 0;
1050
1051 /* Count RXF size */
1052 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1053 if (!mem_cfg->rxfifo_size[i])
1054 continue;
1055
1056 /* Add header info */
1057 fifo_data_len += mem_cfg->rxfifo_size[i] +
1058 sizeof(*dump_data) +
1059 sizeof(struct iwl_fw_error_dump_fifo);
1060 }
1061
1062 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1063 if (!mem_cfg->txfifo_size[i])
1064 continue;
655e6d6d 1065
04fd2c28
LK		 1066 /* Add header info */
1067 fifo_data_len += mem_cfg->txfifo_size[i] +
1068 sizeof(*dump_data) +
1069 sizeof(struct iwl_fw_error_dump_fifo);
1070 }
1071 }
655e6d6d
EG		 1072
1073 file_len = sizeof(*dump_file) +
04fd2c28 1074 sizeof(*dump_data) * 2 +
a549b296 1075 sram_len + sizeof(*dump_mem) +
04fd2c28 1076 fifo_data_len +
655e6d6d
EG		 1077 sizeof(*dump_info);
1078
e539761d
LK		 1079 /*
1080 * In 8000 HW family B-step include the ICCM (which resides separately)
1081 */
1082 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1083 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1084 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1085 IWL8260_ICCM_LEN;
1086
b6eaa45a
EG		 1087 if (mvm->fw_dump_desc)
1088 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1089 mvm->fw_dump_desc->len;
1090
addfaada
LK		 1091 /* Make room for the SMEM, if it exists */
1092 if (smem_len)
a549b296 1093 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
addfaada 1094
86138324
IY		 1095 /* Make room for the secondary SRAM, if it exists */
1096 if (sram2_len)
1097 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1098
5bfe6f53 1099 dump_file = vzalloc(file_len);
48eb7b34
EG		 1100 if (!dump_file) {
1101 kfree(fw_error_dump);
b6eaa45a 1102 iwl_mvm_free_fw_dump_desc(mvm);
655e6d6d 1103 return;
48eb7b34 1104 }
655e6d6d 1105
48eb7b34 1106 fw_error_dump->op_mode_ptr = dump_file;
655e6d6d
EG		 1107
1108 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
655e6d6d
EG		 1109 dump_data = (void *)dump_file->data;
1110
1111 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1112 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1113 dump_info = (void *) dump_data->data;
1114 dump_info->device_family =
1115 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1116 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1117 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
435da2ce 1118 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
655e6d6d
EG		 1119 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1120 sizeof(dump_info->fw_human_readable));
1121 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1122 sizeof(dump_info->dev_human_readable));
1123 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1124 sizeof(dump_info->bus_human_readable));
1125
1126 dump_data = iwl_fw_error_next_data(dump_data);
04fd2c28
LK		 1127 /* We only dump the FIFOs if the FW is in error state */
1128 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1129 iwl_mvm_dump_fifos(mvm, &dump_data);
655e6d6d 1130
b6eaa45a
EG		 1131 if (mvm->fw_dump_desc) {
1132 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1133 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1134 mvm->fw_dump_desc->len);
1135 dump_trig = (void *)dump_data->data;
1136 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1137 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1138
1139 /* now we can free this copy */
1140 iwl_mvm_free_fw_dump_desc(mvm);
1141 dump_data = iwl_fw_error_next_data(dump_data);
1142 }
1143
a549b296
EG		 1144 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1145 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1146 dump_mem = (void *)dump_data->data;
1147 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1148 dump_mem->offset = cpu_to_le32(sram_ofs);
1149 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
655e6d6d
EG		 1150 sram_len);
1151
addfaada
LK		 1152 if (smem_len) {
1153 dump_data = iwl_fw_error_next_data(dump_data);
e06d8437
EG		 1154 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1155 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1156 dump_mem = (void *)dump_data->data;
1157 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1158 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
addfaada 1159 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
e06d8437 1160 dump_mem->data, smem_len);
addfaada
LK		 1161 }
1162
86138324
IY		 1163 if (sram2_len) {
1164 dump_data = iwl_fw_error_next_data(dump_data);
1165 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1166 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1167 dump_mem = (void *)dump_data->data;
1168 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1169 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1170 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1171 dump_mem->data, sram2_len);
1172 }
1173
e539761d
LK		 1174 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1175 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1176 dump_data = iwl_fw_error_next_data(dump_data);
1177 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1178 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1179 sizeof(*dump_mem));
1180 dump_mem = (void *)dump_data->data;
1181 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1182 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1183 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1184 dump_mem->data, IWL8260_ICCM_LEN);
1185 }
1186
48eb7b34
EG		 1187 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1188 fw_error_dump->op_mode_len = file_len;
1189 if (fw_error_dump->trans_ptr)
1190 file_len += fw_error_dump->trans_ptr->len;
1191 dump_file->file_len = cpu_to_le32(file_len);
4bfa47f3 1192
aadede6e
JB		 1193 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1194 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
d2709ad7
EG		 1195
1196 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
655e6d6d 1197}
655e6d6d 1198
b6eaa45a
EG		 1199struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1200 .trig_desc = {
1201 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1202 },
1203};
1204
8ca151b5
JB		 1205static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1206{
58629d9d
JB		 1207 /* clear the D3 reconfig, we only need it to avoid dumping a
1208 * firmware coredump on reconfiguration, we shouldn't do that
1209 * on D3->D0 transition
1210 */
b6eaa45a
EG		 1211 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1212 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
58629d9d 1213 iwl_mvm_fw_error_dump(mvm);
b6eaa45a 1214 }
1bd3cbc1 1215
744cb695
EP		 1216 /* cleanup all stale references (scan, roc), but keep the
1217 * ucode_down ref until reconfig is complete
1218 */
1219 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1220
8ca151b5 1221 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1222
1223 mvm->scan_status = IWL_MVM_SCAN_NONE;
b1873300 1224 mvm->ps_disabled = false;
31b8b343 1225 mvm->calibrating = false;
8ca151b5
JB		 1226
1227 /* just in case one was running */
1228 ieee80211_remain_on_channel_expired(mvm->hw);
1229
1230 ieee80211_iterate_active_interfaces_atomic(
1231 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1232 iwl_mvm_cleanup_iterator, mvm);
1233
fe0f2de3 1234 mvm->p2p_device_vif = NULL;
37577fe2 1235 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 1236
1237 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 1238 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1239 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
a0f6bf2a 1240 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad
EG		 1241 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1242 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1243 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1244 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1245 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1246 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
8ca151b5
JB		 1247
1248 ieee80211_wake_queues(mvm->hw);
1249
228670b2
EP		 1250 /* clear any stale d0i3 state */
1251 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1252
8ca151b5 1253 mvm->vif_count = 0;
113a0447 1254 mvm->rx_ba_sessions = 0;
d2709ad7 1255 mvm->fw_dbg_conf = FW_DBG_INVALID;
91a8bcde
JB		 1256
1257 /* keep statistics ticking */
1258 iwl_mvm_accu_radio_stats(mvm);
8ca151b5
JB		 1259}
1260
a0a09243 1261int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 1262{
8ca151b5
JB		 1263 int ret;
1264
a0a09243 1265 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 1266
1267 /* Clean up some internal and mac80211 state on restart */
1268 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1269 iwl_mvm_restart_cleanup(mvm);
1270
1271 ret = iwl_mvm_up(mvm);
c47af22a
JB		 1272
1273 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1274 /* Something went wrong - we need to finish some cleanup
1275 * that normally iwl_mvm_mac_restart_complete() below
1276 * would do.
1277 */
1278 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1279 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1280 }
1281
a0a09243
LC		 1282 return ret;
1283}
1284
1285static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1286{
1287 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1288 int ret;
1289
37948fcf
EP		 1290 /* Some hw restart cleanups must not hold the mutex */
1291 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1292 /*
1293 * Make sure we are out of d0i3. This is needed
1294 * to make sure the reference accounting is correct
1295 * (and there is no stale d0i3_exit_work).
1296 */
1297 wait_event_timeout(mvm->d0i3_exit_waitq,
1298 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1299 &mvm->status),
1300 HZ);
1301 }
1302
a0a09243
LC		 1303 mutex_lock(&mvm->mutex);
1304 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 1305 mutex_unlock(&mvm->mutex);
1306
1307 return ret;
1308}
1309
cf2c92d8 1310static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 1311{
8ca151b5
JB		 1312 int ret;
1313
1314 mutex_lock(&mvm->mutex);
1315
1316 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 1317 iwl_mvm_d0i3_enable_tx(mvm, NULL);
7754ae79 1318 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 1319 if (ret)
1320 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1321 ret);
1322
7498cf4c
EP		 1323 /* allow transport/FW low power modes */
1324 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1325
cbd2ae2d
AN		 1326 /*
1327 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1328 * of packets the FW sent out, so we must reconnect.
1329 */
1330 iwl_mvm_teardown_tdls_peers(mvm);
1331
8ca151b5
JB		 1332 mutex_unlock(&mvm->mutex);
1333}
1334
088070a2
EP		 1335static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1336{
1337 bool exit_now;
1338
1339 if (!iwl_mvm_is_d0i3_supported(mvm))
1340 return;
1341
1342 mutex_lock(&mvm->d0i3_suspend_mutex);
1343 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1344 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1345 &mvm->d0i3_suspend_flags);
1346 mutex_unlock(&mvm->d0i3_suspend_mutex);
1347
1348 if (exit_now) {
1349 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1350 _iwl_mvm_exit_d0i3(mvm);
1351 }
6735943f
EP		 1352
1353 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1354 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1355 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1356 &mvm->status),
1357 HZ))
1358 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
088070a2
EP		 1359}
1360
cf2c92d8
EP		 1361static void
1362iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1363 enum ieee80211_reconfig_type reconfig_type)
1364{
1365 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1366
1367 switch (reconfig_type) {
1368 case IEEE80211_RECONFIG_TYPE_RESTART:
1369 iwl_mvm_restart_complete(mvm);
1370 break;
1371 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1372 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1373 break;
1374 }
1375}
1376
a0a09243 1377void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1378{
a0a09243 1379 lockdep_assert_held(&mvm->mutex);
7498cf4c 1380
91a8bcde
JB		 1381 /* firmware counters are obviously reset now, but we shouldn't
1382 * partially track so also clear the fw_reset_accu counters.
1383 */
1384 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1385
0a79a0c0
EP		 1386 /*
1387 * Disallow low power states when the FW is down by taking
1388 * the UCODE_DOWN ref. in case of ongoing hw restart the
1389 * ref is already taken, so don't take it again.
1390 */
1391 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1392 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
7498cf4c 1393
8ca151b5
JB		 1394 /* async_handlers_wk is now blocked */
1395
1396 /*
1397 * The work item could be running or queued if the
1398 * ROC time event stops just as we get here.
1399 */
1400 cancel_work_sync(&mvm->roc_done_wk);
1401
1402 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1403
1404 iwl_mvm_async_handlers_purge(mvm);
1405 /* async_handlers_list is empty and will stay empty: HW is stopped */
1406
1407 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1408 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1409
0a79a0c0
EP		 1410 /*
1411 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1412 * won't be called in this case).
1413 */
1414 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1415
bc44886d 1416 mvm->ucode_loaded = false;
a0a09243 1417}
bc44886d 1418
a0a09243
LC		 1419static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1420{
1421 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1422
1423 flush_work(&mvm->d0i3_exit_work);
1424 flush_work(&mvm->async_handlers_wk);
d2709ad7 1425 cancel_delayed_work_sync(&mvm->fw_dump_wk);
b6eaa45a 1426 iwl_mvm_free_fw_dump_desc(mvm);
a0a09243
LC		 1427
1428 mutex_lock(&mvm->mutex);
1429 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1430 mutex_unlock(&mvm->mutex);
1431
1432 /*
1433 * The worker might have been waiting for the mutex, let it run and
1434 * discover that its list is now empty.
1435 */
1436 cancel_work_sync(&mvm->async_handlers_wk);
1437}
1438
fe0f2de3
IP		 1439static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1440{
1441 u16 i;
1442
1443 lockdep_assert_held(&mvm->mutex);
1444
1445 for (i = 0; i < NUM_PHY_CTX; i++)
1446 if (!mvm->phy_ctxts[i].ref)
1447 return &mvm->phy_ctxts[i];
1448
1449 IWL_ERR(mvm, "No available PHY context\n");
1450 return NULL;
1451}
1452
ee9c6cb0
EG		 1453static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1454 s8 tx_power)
1455{
1456 /* FW is in charge of regulatory enforcement */
1457 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1458 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1459 .pwr_restriction = cpu_to_le16(tx_power),
1460 };
1461
a1022927 1462 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 1463 sizeof(reduce_txpwr_cmd),
1464 &reduce_txpwr_cmd);
1465}
1466
8ca151b5
JB		 1467static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1468 struct ieee80211_vif *vif)
1469{
1470 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1471 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1472 int ret;
1473
aa5e1832
EG		 1474 mvmvif->mvm = mvm;
1475
d40fc489
GG		 1476 /*
1477 * make sure D0i3 exit is completed, otherwise a target access
1478 * during tx queue configuration could be done when still in
1479 * D0i3 state.
1480 */
1481 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1482 if (ret)
1483 return ret;
1484
8ca151b5
JB		 1485 /*
1486 * Not much to do here. The stack will not allow interface
1487 * types or combinations that we didn't advertise, so we
1488 * don't really have to check the types.
1489 */
1490
1491 mutex_lock(&mvm->mutex);
1492
33cef925
JB		 1493 /* make sure that beacon statistics don't go backwards with FW reset */
1494 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1495 mvmvif->beacon_stats.accu_num_beacons +=
1496 mvmvif->beacon_stats.num_beacons;
1497
e89044d7 1498 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1499 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1500 if (ret)
1501 goto out_unlock;
1502
1c2abf72 1503 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1504 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1505 mvm->vif_count++;
ea183d02 1506
8ca151b5
JB		 1507 /*
1508 * The AP binding flow can be done only after the beacon
1509 * template is configured (which happens only in the mac80211
1510 * start_ap() flow), and adding the broadcast station can happen
1511 * only after the binding.
1512 * In addition, since modifying the MAC before adding a bcast
1513 * station is not allowed by the FW, delay the adding of MAC context to
1514 * the point where we can also add the bcast station.
1515 * In short: there's not much we can do at this point, other than
1516 * allocating resources :)
1517 */
5023d966
JB		 1518 if (vif->type == NL80211_IFTYPE_AP ||
1519 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1520 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1521 if (ret) {
1522 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1523 goto out_release;
1524 }
1525
77740cb4 1526 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1527 goto out_unlock;
1528 }
1529
8ca151b5
JB		 1530 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1531 if (ret)
1532 goto out_release;
1533
999609f1 1534 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e 1535 if (ret)
fd66fc1c 1536 goto out_remove_mac;
8ca151b5 1537
7df15b1e 1538 /* beacon filtering */
a1022927 1539 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1540 if (ret)
1541 goto out_remove_mac;
1542
7df15b1e 1543 if (!mvm->bf_allowed_vif &&
73e5f2c5 1544 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1545 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1546 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1547 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1548 }
1549
8ca151b5
JB		 1550 /*
1551 * P2P_DEVICE interface does not have a channel context assigned to it,
1552 * so a dedicated PHY context is allocated to it and the corresponding
1553 * MAC context is bound to it at this stage.
1554 */
1555 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1556
fe0f2de3
IP		 1557 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1558 if (!mvmvif->phy_ctxt) {
1559 ret = -ENOSPC;
bd3351ba 1560 goto out_free_bf;
fe0f2de3 1561 }
8ca151b5 1562
53a9d61e 1563 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1564 ret = iwl_mvm_binding_add_vif(mvm, vif);
1565 if (ret)
53a9d61e 1566 goto out_unref_phy;
8ca151b5 1567
013290aa 1568 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1569 if (ret)
1570 goto out_unbind;
1571
1572 /* Save a pointer to p2p device vif, so it can later be used to
1573 * update the p2p device MAC when a GO is started/stopped */
1574 mvm->p2p_device_vif = vif;
1575 }
1576
63494374 1577 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1578 goto out_unlock;
1579
1580 out_unbind:
1581 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1582 out_unref_phy:
fe0f2de3 1583 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1584 out_free_bf:
1585 if (mvm->bf_allowed_vif == mvmvif) {
1586 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1587 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1588 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1589 }
8ca151b5
JB		 1590 out_remove_mac:
1591 mvmvif->phy_ctxt = NULL;
1592 iwl_mvm_mac_ctxt_remove(mvm, vif);
1593 out_release:
5ee2b215
AB		 1594 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1595 mvm->vif_count--;
1c2abf72 1596
8ca151b5
JB		 1597 iwl_mvm_mac_ctxt_release(mvm, vif);
1598 out_unlock:
1599 mutex_unlock(&mvm->mutex);
1600
d40fc489
GG		 1601 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1602
8ca151b5
JB		 1603 return ret;
1604}
1605
38a12b5b
JB		 1606static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1607 struct ieee80211_vif *vif)
8ca151b5 1608{
d92b732e 1609 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1610
1611 if (tfd_msk) {
fe92e32a
EG		 1612 /*
1613 * mac80211 first removes all the stations of the vif and
1614 * then removes the vif. When it removes a station it also
1615 * flushes the AMPDU session. So by now, all the AMPDU sessions
1616 * of all the stations of this vif are closed, and the queues
1617 * of these AMPDU sessions are properly closed.
1618 * We still need to take care of the shared queues of the vif.
1619 * Flush them here.
1620 */
8ca151b5
JB		 1621 mutex_lock(&mvm->mutex);
1622 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1623 mutex_unlock(&mvm->mutex);
fe92e32a
EG		 1624
1625 /*
1626 * There are transports that buffer a few frames in the host.
1627 * For these, the flush above isn't enough since while we were
1628 * flushing, the transport might have sent more frames to the
1629 * device. To solve this, wait here until the transport is
1630 * empty. Technically, this could have replaced the flush
1631 * above, but flush is much faster than draining. So flush
1632 * first, and drain to make sure we have no frames in the
1633 * transport anymore.
1634 * If a station still had frames on the shared queues, it is
1635 * already marked as draining, so to complete the draining, we
1636 * just need to wait until the transport is empty.
1637 */
1638 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
8ca151b5
JB		 1639 }
1640
1641 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1642 /*
1643 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1644 * We assume here that all the packets sent to the OFFCHANNEL
1645 * queue are sent in ROC session.
1646 */
1647 flush_work(&mvm->roc_done_wk);
1648 } else {
1649 /*
1650 * By now, all the AC queues are empty. The AGG queues are
1651 * empty too. We already got all the Tx responses for all the
1652 * packets in the queues. The drain work can have been
0742a75a 1653 * triggered. Flush it.
8ca151b5
JB		 1654 */
1655 flush_work(&mvm->sta_drained_wk);
1656 }
38a12b5b
JB		 1657}
1658
1659static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1660 struct ieee80211_vif *vif)
1661{
1662 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1663 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1664
1665 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1666
1667 mutex_lock(&mvm->mutex);
1668
7df15b1e
HG		 1669 if (mvm->bf_allowed_vif == mvmvif) {
1670 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1671 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1672 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1673 }
1674
63494374
JB		 1675 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1676
8ca151b5
JB		 1677 /*
1678 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1679 * interface is be handled as part of the stop_ap flow.
8ca151b5 1680 */
5023d966
JB		 1681 if (vif->type == NL80211_IFTYPE_AP ||
1682 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1683#ifdef CONFIG_NL80211_TESTMODE
1684 if (vif == mvm->noa_vif) {
1685 mvm->noa_vif = NULL;
1686 mvm->noa_duration = 0;
1687 }
1688#endif
013290aa 1689 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1690 goto out_release;
1691 }
1692
1693 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1694 mvm->p2p_device_vif = NULL;
013290aa 1695 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1696 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1697 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1698 mvmvif->phy_ctxt = NULL;
1699 }
1700
5ee2b215 1701 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1702 mvm->vif_count--;
1c2abf72 1703
999609f1 1704 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1705 iwl_mvm_mac_ctxt_remove(mvm, vif);
1706
1707out_release:
1708 iwl_mvm_mac_ctxt_release(mvm, vif);
1709 mutex_unlock(&mvm->mutex);
1710}
1711
1712static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1713{
8ca151b5
JB		 1714 return 0;
1715}
1716
e59647ea
EP		 1717struct iwl_mvm_mc_iter_data {
1718 struct iwl_mvm *mvm;
1719 int port_id;
1720};
1721
1722static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1723 struct ieee80211_vif *vif)
1724{
1725 struct iwl_mvm_mc_iter_data *data = _data;
1726 struct iwl_mvm *mvm = data->mvm;
1727 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1728 int ret, len;
1729
1730 /* if we don't have free ports, mcast frames will be dropped */
1731 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1732 return;
1733
1734 if (vif->type != NL80211_IFTYPE_STATION ||
1735 !vif->bss_conf.assoc)
1736 return;
1737
1738 cmd->port_id = data->port_id++;
1739 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1740 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1741
1c4abec0 1742 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1743 if (ret)
1744 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1745}
1746
1747static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1748{
1749 struct iwl_mvm_mc_iter_data iter_data = {
1750 .mvm = mvm,
88f2fd73
MG		 1751 };
1752
e59647ea
EP		 1753 lockdep_assert_held(&mvm->mutex);
1754
1755 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1756 return;
1757
1c4abec0 1758 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1759 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1760 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1761}
1762
e59647ea
EP		 1763static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1764 struct netdev_hw_addr_list *mc_list)
8ca151b5 1765{
e59647ea
EP		 1766 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1767 struct iwl_mcast_filter_cmd *cmd;
1768 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1769 int addr_count;
1770 bool pass_all;
e59647ea
EP		 1771 int len;
1772
f3bd58f4
MS		 1773 addr_count = netdev_hw_addr_list_count(mc_list);
1774 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1775 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1776 if (pass_all)
e59647ea 1777 addr_count = 0;
e59647ea
EP		 1778
1779 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1780 cmd = kzalloc(len, GFP_ATOMIC);
1781 if (!cmd)
1782 return 0;
1783
1784 if (pass_all) {
1785 cmd->pass_all = 1;
1786 return (u64)(unsigned long)cmd;
1787 }
1788
1789 netdev_hw_addr_list_for_each(addr, mc_list) {
1790 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1791 cmd->count, addr->addr);
1792 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1793 addr->addr, ETH_ALEN);
1794 cmd->count++;
1795 }
1796
1797 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1798}
1799
1800static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1801 unsigned int changed_flags,
1802 unsigned int *total_flags,
1803 u64 multicast)
1804{
e59647ea
EP		 1805 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1806 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1807
e59647ea 1808 mutex_lock(&mvm->mutex);
51b6b9e0 1809
e59647ea
EP		 1810 /* replace previous configuration */
1811 kfree(mvm->mcast_filter_cmd);
1812 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1813
e59647ea
EP		 1814 if (!cmd)
1815 goto out;
51b6b9e0 1816
e59647ea
EP		 1817 iwl_mvm_recalc_multicast(mvm);
1818out:
1819 mutex_unlock(&mvm->mutex);
1820 *total_flags = 0;
51b6b9e0
EG		 1821}
1822
c87163b9
EP		 1823#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1824struct iwl_bcast_iter_data {
1825 struct iwl_mvm *mvm;
1826 struct iwl_bcast_filter_cmd *cmd;
1827 u8 current_filter;
1828};
1829
1830static void
1831iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1832 const struct iwl_fw_bcast_filter *in_filter,
1833 struct iwl_fw_bcast_filter *out_filter)
1834{
1835 struct iwl_fw_bcast_filter_attr *attr;
1836 int i;
1837
1838 memcpy(out_filter, in_filter, sizeof(*out_filter));
1839
1840 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1841 attr = &out_filter->attrs[i];
1842
1843 if (!attr->mask)
1844 break;
1845
2ee8f021
EP		 1846 switch (attr->reserved1) {
1847 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1848 if (vif->bss_conf.arp_addr_cnt != 1) {
1849 attr->mask = 0;
1850 continue;
1851 }
1852
1853 attr->val = vif->bss_conf.arp_addr_list[0];
1854 break;
1855 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1856 attr->val = *(__be32 *)&vif->addr[2];
1857 break;
1858 default:
1859 break;
1860 }
1861 attr->reserved1 = 0;
c87163b9
EP		 1862 out_filter->num_attrs++;
1863 }
1864}
1865
1866static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1867 struct ieee80211_vif *vif)
1868{
1869 struct iwl_bcast_iter_data *data = _data;
1870 struct iwl_mvm *mvm = data->mvm;
1871 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1872 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1873 struct iwl_fw_bcast_mac *bcast_mac;
1874 int i;
1875
1876 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1877 return;
1878
1879 bcast_mac = &cmd->macs[mvmvif->id];
1880
e48393e8
IP		 1881 /*
1882 * enable filtering only for associated stations, but not for P2P
1883 * Clients
1884 */
1885 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1886 !vif->bss_conf.assoc)
c87163b9
EP		 1887 return;
1888
1889 bcast_mac->default_discard = 1;
1890
1891 /* copy all configured filters */
1892 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1893 /*
1894 * Make sure we don't exceed our filters limit.
1895 * if there is still a valid filter to be configured,
1896 * be on the safe side and just allow bcast for this mac.
1897 */
1898 if (WARN_ON_ONCE(data->current_filter >=
1899 ARRAY_SIZE(cmd->filters))) {
1900 bcast_mac->default_discard = 0;
1901 bcast_mac->attached_filters = 0;
1902 break;
1903 }
1904
1905 iwl_mvm_set_bcast_filter(vif,
1906 &mvm->bcast_filters[i],
1907 &cmd->filters[data->current_filter]);
1908
1909 /* skip current filter if it contains no attributes */
1910 if (!cmd->filters[data->current_filter].num_attrs)
1911 continue;
1912
1913 /* attach the filter to current mac */
1914 bcast_mac->attached_filters |=
1915 cpu_to_le16(BIT(data->current_filter));
1916
1917 data->current_filter++;
1918 }
1919}
1920
de06a59e
EP		 1921bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1922 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1923{
c87163b9
EP		 1924 struct iwl_bcast_iter_data iter_data = {
1925 .mvm = mvm,
de06a59e 1926 .cmd = cmd,
c87163b9
EP		 1927 };
1928
3b8983b1
MS		 1929 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1930 return false;
1931
de06a59e
EP		 1932 memset(cmd, 0, sizeof(*cmd));
1933 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1934 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1935
1936#ifdef CONFIG_IWLWIFI_DEBUGFS
1937 /* use debugfs filters/macs if override is configured */
1938 if (mvm->dbgfs_bcast_filtering.override) {
1939 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1940 sizeof(cmd->filters));
1941 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1942 sizeof(cmd->macs));
1943 return true;
1944 }
1945#endif
c87163b9
EP		 1946
1947 /* if no filters are configured, do nothing */
1948 if (!mvm->bcast_filters)
de06a59e 1949 return false;
c87163b9
EP		 1950
1951 /* configure and attach these filters for each associated sta vif */
1952 ieee80211_iterate_active_interfaces(
1953 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1954 iwl_mvm_bcast_filter_iterator, &iter_data);
1955
de06a59e
EP		 1956 return true;
1957}
1958static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1959 struct ieee80211_vif *vif)
1960{
1961 struct iwl_bcast_filter_cmd cmd;
1962
1963 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1964 return 0;
1965
1966 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1967 return 0;
1968
a1022927 1969 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1970 sizeof(cmd), &cmd);
1971}
1972#else
1973static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1974 struct ieee80211_vif *vif)
1975{
1976 return 0;
1977}
1978#endif
1979
8ca151b5
JB		 1980static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1981 struct ieee80211_vif *vif,
1982 struct ieee80211_bss_conf *bss_conf,
1983 u32 changes)
1984{
1985 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1986 int ret;
1987
6e97b0d2
IP		 1988 /*
1989 * Re-calculate the tsf id, as the master-slave relations depend on the
1990 * beacon interval, which was not known when the station interface was
1991 * added.
1992 */
1993 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1994 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1995
3dfd3a97
JB		 1996 /*
1997 * If we're not associated yet, take the (new) BSSID before associating
1998 * so the firmware knows. If we're already associated, then use the old
1999 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2000 * branch for disassociation below.
2001 */
2002 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2003 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2004
2005 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 2006 if (ret)
2007 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2008
3dfd3a97
JB		 2009 /* after sending it once, adopt mac80211 data */
2010 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2011 mvmvif->associated = bss_conf->assoc;
2012
8ca151b5
JB		 2013 if (changes & BSS_CHANGED_ASSOC) {
2014 if (bss_conf->assoc) {
33cef925
JB		 2015 /* clear statistics to get clean beacon counter */
2016 iwl_mvm_request_statistics(mvm, true);
2017 memset(&mvmvif->beacon_stats, 0,
2018 sizeof(mvmvif->beacon_stats));
2019
8ca151b5 2020 /* add quota for this interface */
7754ae79 2021 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 2022 if (ret) {
2023 IWL_ERR(mvm, "failed to update quotas\n");
2024 return;
2025 }
016d27e1
JB		 2026
2027 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2028 &mvm->status)) {
2029 /*
2030 * If we're restarting then the firmware will
2031 * obviously have lost synchronisation with
2032 * the AP. It will attempt to synchronise by
2033 * itself, but we can make it more reliable by
2034 * scheduling a session protection time event.
2035 *
2036 * The firmware needs to receive a beacon to
2037 * catch up with synchronisation, use 110% of
2038 * the beacon interval.
2039 *
2040 * Set a large maximum delay to allow for more
2041 * than a single interface.
2042 */
2043 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2044 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 2045 5 * dur, false);
016d27e1 2046 }
1f3b0ff8
LE		 2047
2048 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 2049 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 2050 if (vif->p2p) {
29a90a49 2051 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 2052 iwl_mvm_update_smps(mvm, vif,
2053 IWL_MVM_SMPS_REQ_PROT,
2054 IEEE80211_SMPS_DYNAMIC);
2055 }
8ca151b5 2056 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 2057 /*
2058 * If update fails - SF might be running in associated
2059 * mode while disassociated - which is forbidden.
2060 */
2061 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2062 "Failed to update SF upon disassociation\n");
2063
8ca151b5
JB		 2064 /* remove AP station now that the MAC is unassoc */
2065 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2066 if (ret)
2067 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 2068
2069 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2070 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 2071 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2072 /* remove quota for this interface */
7754ae79 2073 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 2074 if (ret)
2075 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 2076
2077 if (vif->p2p)
2078 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 2079
2080 /* this will take the cleared BSSID from bss_conf */
2081 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2082 if (ret)
2083 IWL_ERR(mvm,
2084 "failed to update MAC %pM (clear after unassoc)\n",
2085 vif->addr);
8ca151b5 2086 }
a20fd398 2087
e59647ea 2088 iwl_mvm_recalc_multicast(mvm);
c87163b9 2089 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 2090
a20fd398
AO		 2091 /* reset rssi values */
2092 mvmvif->bf_data.ave_beacon_signal = 0;
2093
8e484f0b 2094 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 2095 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2096 IEEE80211_SMPS_AUTOMATIC);
989c6505 2097 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 2098 /*
2099 * We received a beacon _after_ association so
2100 * remove the session protection.
2101 */
2102 iwl_mvm_remove_time_event(mvm, mvmvif,
2103 &mvmvif->time_event_data);
8ca151b5 2104 }
cc87d322
EH		 2105
2106 if (changes & BSS_CHANGED_BEACON_INFO) {
2107 iwl_mvm_sf_update(mvm, vif, false);
2108 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2109 }
2110
1bc10d3b
JB		 2111 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2112 ret = iwl_mvm_power_update_mac(mvm);
2113 if (ret)
2114 IWL_ERR(mvm, "failed to update power mode\n");
2115 }
2116
88f2fd73
MG		 2117 if (changes & BSS_CHANGED_TXPOWER) {
2118 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2119 bss_conf->txpower);
2120 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2121 }
a20fd398
AO		 2122
2123 if (changes & BSS_CHANGED_CQM) {
3c6acb61 2124 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 2125 /* reset cqm events tracking */
2126 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 2127 if (mvmvif->bf_data.bf_enabled) {
2128 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2129 if (ret)
2130 IWL_ERR(mvm,
2131 "failed to update CQM thresholds\n");
2132 }
a20fd398 2133 }
2ee8f021
EP		 2134
2135 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 2136 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 2137 iwl_mvm_configure_bcast_filter(mvm, vif);
2138 }
8ca151b5
JB		 2139}
2140
5023d966
JB		 2141static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2142 struct ieee80211_vif *vif)
8ca151b5
JB		 2143{
2144 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2145 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2146 int ret;
2147
576eeee9
EP		 2148 /*
2149 * iwl_mvm_mac_ctxt_add() might read directly from the device
2150 * (the system time), so make sure it is available.
2151 */
2152 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2153 if (ret)
2154 return ret;
2155
8ca151b5
JB		 2156 mutex_lock(&mvm->mutex);
2157
2158 /* Send the beacon template */
2159 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2160 if (ret)
2161 goto out_unlock;
2162
6e97b0d2
IP		 2163 /*
2164 * Re-calculate the tsf id, as the master-slave relations depend on the
2165 * beacon interval, which was not known when the AP interface was added.
2166 */
2167 if (vif->type == NL80211_IFTYPE_AP)
2168 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2169
8ca151b5
JB		 2170 /* Add the mac context */
2171 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2172 if (ret)
2173 goto out_unlock;
2174
2175 /* Perform the binding */
2176 ret = iwl_mvm_binding_add_vif(mvm, vif);
2177 if (ret)
2178 goto out_remove;
2179
8ca151b5
JB		 2180 /* Send the bcast station. At this stage the TBTT and DTIM time events
2181 * are added and applied to the scheduler */
013290aa 2182 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 2183 if (ret)
2184 goto out_unbind;
2185
5691e218
IP		 2186 /* must be set before quota calculations */
2187 mvmvif->ap_ibss_active = true;
2188
a11e144e 2189 /* power updated needs to be done before quotas */
999609f1 2190 iwl_mvm_power_update_mac(mvm);
a11e144e 2191
7754ae79 2192 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5 2193 if (ret)
a11e144e 2194 goto out_quota_failed;
8ca151b5 2195
5023d966 2196 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2197 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2198 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2199
29a90a49
EP		 2200 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2201
8e484f0b 2202 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2203
f697267f
AN		 2204 /* we don't support TDLS during DCM */
2205 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2206 iwl_mvm_teardown_tdls_peers(mvm);
2207
939e4904 2208 goto out_unlock;
8ca151b5 2209
a11e144e 2210out_quota_failed:
999609f1 2211 iwl_mvm_power_update_mac(mvm);
5691e218 2212 mvmvif->ap_ibss_active = false;
013290aa 2213 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5
JB		 2214out_unbind:
2215 iwl_mvm_binding_remove_vif(mvm, vif);
2216out_remove:
2217 iwl_mvm_mac_ctxt_remove(mvm, vif);
2218out_unlock:
2219 mutex_unlock(&mvm->mutex);
576eeee9 2220 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 2221 return ret;
2222}
2223
5023d966
JB		 2224static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2225 struct ieee80211_vif *vif)
8ca151b5
JB		 2226{
2227 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2228 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2229
38a12b5b
JB		 2230 iwl_mvm_prepare_mac_removal(mvm, vif);
2231
8ca151b5
JB		 2232 mutex_lock(&mvm->mutex);
2233
664322fa 2234 /* Handle AP stop while in CSA */
7f0a7c67
AO		 2235 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2236 iwl_mvm_remove_time_event(mvm, mvmvif,
2237 &mvmvif->time_event_data);
664322fa 2238 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 2239 }
664322fa 2240
003e5236
AO		 2241 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2242 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2243 mvm->csa_tx_block_bcn_timeout = 0;
2244 }
2245
5023d966 2246 mvmvif->ap_ibss_active = false;
1c87bbad 2247 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 2248
8e484f0b 2249 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2250
29a90a49
EP		 2251 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2252
5023d966 2253 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2254 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2255 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2256
7754ae79 2257 iwl_mvm_update_quotas(mvm, false, NULL);
013290aa 2258 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5 2259 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 2260
999609f1 2261 iwl_mvm_power_update_mac(mvm);
a11e144e 2262
8ca151b5
JB		 2263 iwl_mvm_mac_ctxt_remove(mvm, vif);
2264
2265 mutex_unlock(&mvm->mutex);
2266}
2267
5023d966
JB		 2268static void
2269iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2270 struct ieee80211_vif *vif,
2271 struct ieee80211_bss_conf *bss_conf,
2272 u32 changes)
8ca151b5 2273{
be2056fc 2274 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 2275
be2056fc
IP		 2276 /* Changes will be applied when the AP/IBSS is started */
2277 if (!mvmvif->ap_ibss_active)
2278 return;
2279
863230da 2280 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 2281 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 2282 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 2283 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 2284
8ca151b5 2285 /* Need to send a new beacon template to the FW */
863230da
JB		 2286 if (changes & BSS_CHANGED_BEACON &&
2287 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2288 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 2289
2290 if (changes & BSS_CHANGED_TXPOWER) {
2291 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2292 bss_conf->txpower);
2293 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2294 }
2295
8ca151b5
JB		 2296}
2297
2298static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2299 struct ieee80211_vif *vif,
2300 struct ieee80211_bss_conf *bss_conf,
2301 u32 changes)
2302{
2303 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2304
576eeee9
EP		 2305 /*
2306 * iwl_mvm_bss_info_changed_station() might call
2307 * iwl_mvm_protect_session(), which reads directly from
2308 * the device (the system time), so make sure it is available.
2309 */
2310 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2311 return;
2312
8ca151b5
JB		 2313 mutex_lock(&mvm->mutex);
2314
723f02ed 2315 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 2316 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 2317
8ca151b5
JB		 2318 switch (vif->type) {
2319 case NL80211_IFTYPE_STATION:
2320 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2321 break;
2322 case NL80211_IFTYPE_AP:
5023d966
JB		 2323 case NL80211_IFTYPE_ADHOC:
2324 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 2325 break;
2326 default:
2327 /* shouldn't happen */
2328 WARN_ON_ONCE(1);
2329 }
2330
2331 mutex_unlock(&mvm->mutex);
576eeee9 2332 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 2333}
2334
4660dfbb
EP		 2335static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2336 enum iwl_scan_status scan_type)
2337{
2338 int ret;
2339 bool wait_for_handlers = false;
2340
2341 mutex_lock(&mvm->mutex);
2342
2343 if (mvm->scan_status != scan_type) {
2344 ret = 0;
2345 /* make sure there are no pending notifications */
2346 wait_for_handlers = true;
2347 goto out;
2348 }
2349
2350 switch (scan_type) {
2351 case IWL_MVM_SCAN_SCHED:
2352 ret = iwl_mvm_scan_offload_stop(mvm, true);
2353 break;
2354 case IWL_MVM_SCAN_OS:
2355 ret = iwl_mvm_cancel_scan(mvm);
2356 break;
2357 case IWL_MVM_SCAN_NONE:
2358 default:
2359 WARN_ON_ONCE(1);
2360 ret = -EINVAL;
2361 break;
2362 }
2363 if (ret)
2364 goto out;
2365
2366 wait_for_handlers = true;
2367out:
2368 mutex_unlock(&mvm->mutex);
2369
2370 /* make sure we consume the completion notification */
2371 if (wait_for_handlers)
2372 iwl_mvm_wait_for_async_handlers(mvm);
2373
2374 return ret;
2375}
8ca151b5
JB		 2376static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2377 struct ieee80211_vif *vif,
c56ef672 2378 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 2379{
2380 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 2381 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 2382 int ret;
2383
762533ba
DS		 2384 if (req->n_channels == 0 ||
2385 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 2386 return -EINVAL;
2387
d2496221
DS		 2388 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2389 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2390 if (ret)
2391 return ret;
2392 }
4660dfbb 2393
8ca151b5
JB		 2394 mutex_lock(&mvm->mutex);
2395
88931cc9
AN		 2396 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2397 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2398 ret = -EBUSY;
2399 goto out;
2400 }
2401
4660dfbb 2402 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
8ca151b5 2403 ret = -EBUSY;
519e2026
AN		 2404 goto out;
2405 }
8ca151b5 2406
519e2026
AN		 2407 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2408
b975e55a 2409 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
d2496221 2410 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
fb98be5e 2411 else
1f940386 2412 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
fb98be5e 2413
519e2026
AN		 2414 if (ret)
2415 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2416out:
8ca151b5 2417 mutex_unlock(&mvm->mutex);
8ca151b5
JB		 2418 return ret;
2419}
2420
2421static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2422 struct ieee80211_vif *vif)
2423{
2424 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2425
2426 mutex_lock(&mvm->mutex);
2427
e7d3abab
LC		 2428 /* Due to a race condition, it's possible that mac80211 asks
2429 * us to stop a hw_scan when it's already stopped. This can
2430 * happen, for instance, if we stopped the scan ourselves,
2431 * called ieee80211_scan_completed() and the userspace called
2432 * cancel scan scan before ieee80211_scan_work() could run.
2433 * To handle that, simply return if the scan is not running.
2434 */
2435 /* FIXME: for now, we ignore this race for UMAC scans, since
2436 * they don't set the scan_status.
2437 */
2438 if ((mvm->scan_status == IWL_MVM_SCAN_OS) ||
2439 (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2440 iwl_mvm_cancel_scan(mvm);
8ca151b5
JB		 2441
2442 mutex_unlock(&mvm->mutex);
2443}
2444
2445static void
2446iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2447 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2448 int num_frames,
2449 enum ieee80211_frame_release_type reason,
2450 bool more_data)
2451{
2452 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2453
3e56eadf 2454 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2455
3e56eadf
JB		 2456 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2457 tids, more_data, false);
2458}
2459
2460static void
2461iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2462 struct ieee80211_sta *sta, u16 tids,
2463 int num_frames,
2464 enum ieee80211_frame_release_type reason,
2465 bool more_data)
2466{
2467 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2468
2469 /* Called when we need to transmit (a) frame(s) from agg queue */
2470
2471 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2472 tids, more_data, true);
8ca151b5
JB		 2473}
2474
2475static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2476 struct ieee80211_vif *vif,
2477 enum sta_notify_cmd cmd,
2478 struct ieee80211_sta *sta)
2479{
2480 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2481 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
c22b0ff5 2482 unsigned long txqs = 0, tids = 0;
3e56eadf 2483 int tid;
8ca151b5 2484
c22b0ff5
EG		 2485 spin_lock_bh(&mvmsta->lock);
2486 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2487 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2488
2489 if (tid_data->state != IWL_AGG_ON &&
2490 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2491 continue;
2492
2493 __set_bit(tid_data->txq_id, &txqs);
2494
2495 if (iwl_mvm_tid_queued(tid_data) == 0)
2496 continue;
2497
2498 __set_bit(tid, &tids);
2499 }
2500
8ca151b5
JB		 2501 switch (cmd) {
2502 case STA_NOTIFY_SLEEP:
e3d4bc8c 2503 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2504 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf 2505
c22b0ff5 2506 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
3e56eadf 2507 ieee80211_sta_set_buffered(sta, tid, true);
c22b0ff5
EG		 2508
2509 if (txqs)
2510 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
8ca151b5
JB		 2511 /*
2512 * The fw updates the STA to be asleep. Tx packets on the Tx
2513 * queues to this station will not be transmitted. The fw will
2514 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2515 */
2516 break;
2517 case STA_NOTIFY_AWAKE:
881acd89 2518 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 2519 break;
c22b0ff5
EG		 2520
2521 if (txqs)
2522 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
9cc40712 2523 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2524 break;
2525 default:
2526 break;
2527 }
c22b0ff5 2528 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2529}
2530
1ddbbb0c
JB		 2531static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2532 struct ieee80211_vif *vif,
2533 struct ieee80211_sta *sta)
2534{
2535 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 2536 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1ddbbb0c
JB		 2537
2538 /*
2539 * This is called before mac80211 does RCU synchronisation,
2540 * so here we already invalidate our internal RCU-protected
2541 * station pointer. The rest of the code will thus no longer
2542 * be able to find the station this way, and we don't rely
2543 * on further RCU synchronisation after the sta_state()
2544 * callback deleted the station.
2545 */
2546 mutex_lock(&mvm->mutex);
2547 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2548 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2549 ERR_PTR(-ENOENT));
2550 mutex_unlock(&mvm->mutex);
2551}
2552
bd1ba664
JB		 2553static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2554 const u8 *bssid)
2555{
2556 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2557 return;
2558
2559 if (iwlwifi_mod_params.uapsd_disable) {
2560 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2561 return;
2562 }
2563
2564 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2565}
2566
8ca151b5
JB		 2567static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2568 struct ieee80211_vif *vif,
2569 struct ieee80211_sta *sta,
2570 enum ieee80211_sta_state old_state,
2571 enum ieee80211_sta_state new_state)
2572{
2573 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2574 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2575 int ret;
2576
2577 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2578 sta->addr, old_state, new_state);
2579
2580 /* this would be a mac80211 bug ... but don't crash */
2581 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2582 return -EINVAL;
2583
2584 /* if a STA is being removed, reuse its ID */
2585 flush_work(&mvm->sta_drained_wk);
2586
2587 mutex_lock(&mvm->mutex);
2588 if (old_state == IEEE80211_STA_NOTEXIST &&
2589 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2590 /*
2591 * Firmware bug - it'll crash if the beacon interval is less
2592 * than 16. We can't avoid connecting at all, so refuse the
2593 * station state change, this will cause mac80211 to abandon
2594 * attempts to connect to this AP, and eventually wpa_s will
2595 * blacklist the AP...
2596 */
2597 if (vif->type == NL80211_IFTYPE_STATION &&
2598 vif->bss_conf.beacon_int < 16) {
2599 IWL_ERR(mvm,
2600 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2601 sta->addr, vif->bss_conf.beacon_int);
2602 ret = -EINVAL;
2603 goto out_unlock;
2604 }
cf7b491d
AN		 2605
2606 if (sta->tdls &&
2607 (vif->p2p ||
fa3d07e4
AN		 2608 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2609 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2610 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2611 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2612 ret = -EBUSY;
2613 goto out_unlock;
2614 }
2615
8ca151b5 2616 ret = iwl_mvm_add_sta(mvm, vif, sta);
fa3d07e4
AN		 2617 if (sta->tdls && ret == 0)
2618 iwl_mvm_recalc_tdls_state(mvm, vif, true);
8ca151b5
JB		 2619 } else if (old_state == IEEE80211_STA_NONE &&
2620 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2621 /*
2622 * EBS may be disabled due to previous failures reported by FW.
2623 * Reset EBS status here assuming environment has been changed.
2624 */
2625 mvm->last_ebs_successful = true;
bd1ba664 2626 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
8ca151b5
JB		 2627 ret = 0;
2628 } else if (old_state == IEEE80211_STA_AUTH &&
2629 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2630 ret = iwl_mvm_update_sta(mvm, vif, sta);
2631 if (ret == 0)
2632 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2633 mvmvif->phy_ctxt->channel->band,
2634 true);
8ca151b5
JB		 2635 } else if (old_state == IEEE80211_STA_ASSOC &&
2636 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2637
2638 /* we don't support TDLS during DCM */
2639 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2640 iwl_mvm_teardown_tdls_peers(mvm);
2641
7df15b1e 2642 /* enable beacon filtering */
fa7b2e7f 2643 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2644 ret = 0;
2645 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2646 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2647 /* disable beacon filtering */
a1022927 2648 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2649 ret = 0;
2650 } else if (old_state == IEEE80211_STA_ASSOC &&
2651 new_state == IEEE80211_STA_AUTH) {
2652 ret = 0;
2653 } else if (old_state == IEEE80211_STA_AUTH &&
2654 new_state == IEEE80211_STA_NONE) {
2655 ret = 0;
2656 } else if (old_state == IEEE80211_STA_NONE &&
2657 new_state == IEEE80211_STA_NOTEXIST) {
2658 ret = iwl_mvm_rm_sta(mvm, vif, sta);
fa3d07e4
AN		 2659 if (sta->tdls)
2660 iwl_mvm_recalc_tdls_state(mvm, vif, false);
8ca151b5
JB		 2661 } else {
2662 ret = -EIO;
2663 }
48bc1307 2664 out_unlock:
8ca151b5
JB		 2665 mutex_unlock(&mvm->mutex);
2666
9c126cd6
LK		 2667 if (sta->tdls && ret == 0) {
2668 if (old_state == IEEE80211_STA_NOTEXIST &&
2669 new_state == IEEE80211_STA_NONE)
2670 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2671 else if (old_state == IEEE80211_STA_NONE &&
2672 new_state == IEEE80211_STA_NOTEXIST)
2673 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2674 }
2675
8ca151b5
JB		 2676 return ret;
2677}
2678
2679static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2680{
2681 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2682
2683 mvm->rts_threshold = value;
2684
2685 return 0;
2686}
2687
1f3b0ff8
LE		 2688static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2689 struct ieee80211_vif *vif,
2690 struct ieee80211_sta *sta, u32 changed)
2691{
2692 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2693
2694 if (vif->type == NL80211_IFTYPE_STATION &&
2695 changed & IEEE80211_RC_NSS_CHANGED)
2696 iwl_mvm_sf_update(mvm, vif, false);
2697}
2698
8ca151b5
JB		 2699static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2700 struct ieee80211_vif *vif, u16 ac,
2701 const struct ieee80211_tx_queue_params *params)
2702{
2703 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2704 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2705
2706 mvmvif->queue_params[ac] = *params;
2707
2708 /*
2709 * No need to update right away, we'll get BSS_CHANGED_QOS
2710 * The exception is P2P_DEVICE interface which needs immediate update.
2711 */
2712 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2713 int ret;
2714
2715 mutex_lock(&mvm->mutex);
3dfd3a97 2716 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2717 mutex_unlock(&mvm->mutex);
2718 return ret;
2719 }
2720 return 0;
2721}
2722
2723static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2724 struct ieee80211_vif *vif)
2725{
2726 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2727 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2728 200 + vif->bss_conf.beacon_int);
2729 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2730 100 + vif->bss_conf.beacon_int);
2731
2732 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2733 return;
2734
576eeee9
EP		 2735 /*
2736 * iwl_mvm_protect_session() reads directly from the device
2737 * (the system time), so make sure it is available.
2738 */
2739 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2740 return;
2741
8ca151b5
JB		 2742 mutex_lock(&mvm->mutex);
2743 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2744 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2745 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2746
2747 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2748}
2749
35a000b7
DS		 2750static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2751 struct ieee80211_vif *vif,
2752 struct cfg80211_sched_scan_request *req,
633e2713 2753 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2754{
2755 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2756 int ret;
2757
d2496221
DS		 2758 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2759 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2760 if (ret)
2761 return ret;
2762 }
4660dfbb 2763
35a000b7
DS		 2764 mutex_lock(&mvm->mutex);
2765
88931cc9
AN		 2766 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2767 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2768 ret = -EBUSY;
2769 goto out;
2770 }
2771
1f940386 2772 if (!vif->bss_conf.idle) {
bd5e4744
DS		 2773 ret = -EBUSY;
2774 goto out;
2775 }
2776
4660dfbb 2777 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
35a000b7
DS		 2778 ret = -EBUSY;
2779 goto out;
2780 }
2781
b141c235 2782 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
35a000b7 2783 if (ret)
b141c235 2784 mvm->scan_status = IWL_MVM_SCAN_NONE;
d2496221 2785
35a000b7
DS		 2786out:
2787 mutex_unlock(&mvm->mutex);
2788 return ret;
2789}
2790
37e3308c
JB		 2791static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2792 struct ieee80211_vif *vif)
35a000b7
DS		 2793{
2794 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2795 int ret;
35a000b7
DS		 2796
2797 mutex_lock(&mvm->mutex);
e7d3abab
LC		 2798
2799 /* Due to a race condition, it's possible that mac80211 asks
2800 * us to stop a sched_scan when it's already stopped. This
2801 * can happen, for instance, if we stopped the scan ourselves,
2802 * called ieee80211_sched_scan_stopped() and the userspace called
2803 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2804 * could run. To handle this, simply return if the scan is
2805 * not running.
2806 */
2807 /* FIXME: for now, we ignore this race for UMAC scans, since
2808 * they don't set the scan_status.
2809 */
2810 if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
2811 !(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2812 mutex_unlock(&mvm->mutex);
2813 return 0;
2814 }
2815
fb98be5e 2816 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2817 mutex_unlock(&mvm->mutex);
33ea27f6 2818 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2819
33ea27f6 2820 return ret;
35a000b7
DS		 2821}
2822
8ca151b5
JB		 2823static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2824 enum set_key_cmd cmd,
2825 struct ieee80211_vif *vif,
2826 struct ieee80211_sta *sta,
2827 struct ieee80211_key_conf *key)
2828{
2829 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2830 int ret;
2831
2832 if (iwlwifi_mod_params.sw_crypto) {
2833 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2834 return -EOPNOTSUPP;
2835 }
2836
2837 switch (key->cipher) {
2838 case WLAN_CIPHER_SUITE_TKIP:
2839 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2840 /* fall-through */
2841 case WLAN_CIPHER_SUITE_CCMP:
2842 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2843 break;
2844 case WLAN_CIPHER_SUITE_AES_CMAC:
2845 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2846 break;
2847 case WLAN_CIPHER_SUITE_WEP40:
2848 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2849 /* For non-client mode, only use WEP keys for TX as we probably
2850 * don't have a station yet anyway and would then have to keep
2851 * track of the keys, linking them to each of the clients/peers
2852 * as they appear. For now, don't do that, for performance WEP
2853 * offload doesn't really matter much, but we need it for some
2854 * other offload features in client mode.
8ca151b5 2855 */
ba3943b0
JB		 2856 if (vif->type != NL80211_IFTYPE_STATION)
2857 return 0;
2858 break;
8ca151b5 2859 default:
e36e5433
MS		 2860 /* currently FW supports only one optional cipher scheme */
2861 if (hw->n_cipher_schemes &&
2862 hw->cipher_schemes->cipher == key->cipher)
2863 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2864 else
2865 return -EOPNOTSUPP;
8ca151b5
JB		 2866 }
2867
2868 mutex_lock(&mvm->mutex);
2869
2870 switch (cmd) {
2871 case SET_KEY:
5023d966
JB		 2872 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2873 vif->type == NL80211_IFTYPE_AP) && !sta) {
2874 /*
2875 * GTK on AP interface is a TX-only key, return 0;
2876 * on IBSS they're per-station and because we're lazy
2877 * we don't support them for RX, so do the same.
2878 */
6caffd4f
JB		 2879 ret = 0;
2880 key->hw_key_idx = STA_KEY_IDX_INVALID;
2881 break;
2882 }
2883
8ca151b5
JB		 2884 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2885 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2886 if (ret) {
2887 IWL_WARN(mvm, "set key failed\n");
2888 /*
2889 * can't add key for RX, but we don't need it
2890 * in the device for TX so still return 0
2891 */
6caffd4f 2892 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2893 ret = 0;
2894 }
2895
2896 break;
2897 case DISABLE_KEY:
6caffd4f
JB		 2898 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2899 ret = 0;
2900 break;
2901 }
2902
8ca151b5
JB		 2903 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2904 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2905 break;
2906 default:
2907 ret = -EINVAL;
2908 }
2909
2910 mutex_unlock(&mvm->mutex);
2911 return ret;
2912}
2913
2914static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2915 struct ieee80211_vif *vif,
2916 struct ieee80211_key_conf *keyconf,
2917 struct ieee80211_sta *sta,
2918 u32 iv32, u16 *phase1key)
2919{
2920 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2921
5023d966
JB		 2922 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2923 return;
2924
8ca151b5
JB		 2925 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2926}
2927
2928
b112889c
AM		 2929static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2930 struct iwl_rx_packet *pkt, void *data)
2931{
2932 struct iwl_mvm *mvm =
2933 container_of(notif_wait, struct iwl_mvm, notif_wait);
2934 struct iwl_hs20_roc_res *resp;
2935 int resp_len = iwl_rx_packet_payload_len(pkt);
2936 struct iwl_mvm_time_event_data *te_data = data;
2937
2938 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2939 return true;
2940
2941 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2942 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2943 return true;
2944 }
2945
2946 resp = (void *)pkt->data;
2947
2948 IWL_DEBUG_TE(mvm,
2949 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2950 resp->status, resp->event_unique_id);
2951
2952 te_data->uid = le32_to_cpu(resp->event_unique_id);
2953 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2954 te_data->uid);
2955
2956 spin_lock_bh(&mvm->time_event_lock);
2957 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2958 spin_unlock_bh(&mvm->time_event_lock);
2959
2960 return true;
2961}
2962
2963#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2964static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2965 struct ieee80211_channel *channel,
2966 struct ieee80211_vif *vif,
2967 int duration)
2968{
2969 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2970 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2971 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2972 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2973 struct iwl_notification_wait wait_time_event;
2974 struct iwl_hs20_roc_req aux_roc_req = {
2975 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2976 .id_and_color =
2977 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2978 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2979 /* Set the channel info data */
2980 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2981 PHY_BAND_24 : PHY_BAND_5,
2982 .channel_info.channel = channel->hw_value,
2983 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2984 /* Set the time and duration */
2985 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2986 .apply_time_max_delay =
2987 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2988 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2989 };
2990
2991 /* Set the node address */
2992 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2993
a6cc5163
MG		 2994 lockdep_assert_held(&mvm->mutex);
2995
2996 spin_lock_bh(&mvm->time_event_lock);
2997
2998 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2999 spin_unlock_bh(&mvm->time_event_lock);
3000 return -EIO;
3001 }
3002
b112889c
AM		 3003 te_data->vif = vif;
3004 te_data->duration = duration;
3005 te_data->id = HOT_SPOT_CMD;
3006
b112889c
AM		 3007 spin_unlock_bh(&mvm->time_event_lock);
3008
3009 /*
3010 * Use a notification wait, which really just processes the
3011 * command response and doesn't wait for anything, in order
3012 * to be able to process the response and get the UID inside
3013 * the RX path. Using CMD_WANT_SKB doesn't work because it
3014 * stores the buffer and then wakes up this thread, by which
3015 * time another notification (that the time event started)
3016 * might already be processed unsuccessfully.
3017 */
3018 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3019 time_event_response,
3020 ARRAY_SIZE(time_event_response),
3021 iwl_mvm_rx_aux_roc, te_data);
3022
3023 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3024 &aux_roc_req);
3025
3026 if (res) {
3027 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3028 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3029 goto out_clear_te;
3030 }
3031
3032 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3033 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3034 /* should never fail */
3035 WARN_ON_ONCE(res);
3036
3037 if (res) {
3038 out_clear_te:
3039 spin_lock_bh(&mvm->time_event_lock);
3040 iwl_mvm_te_clear_data(mvm, te_data);
3041 spin_unlock_bh(&mvm->time_event_lock);
3042 }
3043
3044 return res;
3045}
3046
8ca151b5
JB		 3047static int iwl_mvm_roc(struct ieee80211_hw *hw,
3048 struct ieee80211_vif *vif,
3049 struct ieee80211_channel *channel,
d339d5ca
IP		 3050 int duration,
3051 enum ieee80211_roc_type type)
8ca151b5
JB		 3052{
3053 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 3054 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 3055 struct cfg80211_chan_def chandef;
31d385ae
IP		 3056 struct iwl_mvm_phy_ctxt *phy_ctxt;
3057 int ret, i;
3058
3059 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3060 duration, type);
8ca151b5 3061
a6cc5163
MG		 3062 mutex_lock(&mvm->mutex);
3063
b112889c
AM		 3064 switch (vif->type) {
3065 case NL80211_IFTYPE_STATION:
5ac6c72e
LC		 3066 if (mvm->fw->ucode_capa.capa[0] &
3067 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
3068 /* Use aux roc framework (HS20) */
3069 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3070 vif, duration);
3071 goto out_unlock;
3072 }
3073 IWL_ERR(mvm, "hotspot not supported\n");
3074 ret = -EINVAL;
a6cc5163 3075 goto out_unlock;
b112889c
AM		 3076 case NL80211_IFTYPE_P2P_DEVICE:
3077 /* handle below */
3078 break;
3079 default:
3080 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 3081 ret = -EINVAL;
3082 goto out_unlock;
8ca151b5
JB		 3083 }
3084
31d385ae
IP		 3085 for (i = 0; i < NUM_PHY_CTX; i++) {
3086 phy_ctxt = &mvm->phy_ctxts[i];
3087 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3088 continue;
3089
3090 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3091 /*
3092 * Unbind the P2P_DEVICE from the current PHY context,
3093 * and if the PHY context is not used remove it.
3094 */
3095 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3096 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3097 goto out_unlock;
3098
3099 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3100
3101 /* Bind the P2P_DEVICE to the current PHY Context */
3102 mvmvif->phy_ctxt = phy_ctxt;
3103
3104 ret = iwl_mvm_binding_add_vif(mvm, vif);
3105 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3106 goto out_unlock;
3107
3108 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3109 goto schedule_time_event;
3110 }
3111 }
3112
3113 /* Need to update the PHY context only if the ROC channel changed */
3114 if (channel == mvmvif->phy_ctxt->channel)
3115 goto schedule_time_event;
3116
8ca151b5 3117 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 3118
31d385ae
IP		 3119 /*
3120 * Change the PHY context configuration as it is currently referenced
3121 * only by the P2P Device MAC
3122 */
3123 if (mvmvif->phy_ctxt->ref == 1) {
3124 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3125 &chandef, 1, 1);
3126 if (ret)
3127 goto out_unlock;
3128 } else {
3129 /*
3130 * The PHY context is shared with other MACs. Need to remove the
3131 * P2P Device from the binding, allocate an new PHY context and
3132 * create a new binding
3133 */
3134 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3135 if (!phy_ctxt) {
3136 ret = -ENOSPC;
3137 goto out_unlock;
3138 }
3139
3140 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3141 1, 1);
3142 if (ret) {
3143 IWL_ERR(mvm, "Failed to change PHY context\n");
3144 goto out_unlock;
3145 }
3146
3147 /* Unbind the P2P_DEVICE from the current PHY context */
3148 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3149 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3150 goto out_unlock;
3151
3152 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3153
3154 /* Bind the P2P_DEVICE to the new allocated PHY context */
3155 mvmvif->phy_ctxt = phy_ctxt;
3156
3157 ret = iwl_mvm_binding_add_vif(mvm, vif);
3158 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3159 goto out_unlock;
3160
3161 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3162 }
3163
3164schedule_time_event:
8ca151b5 3165 /* Schedule the time events */
e635c797 3166 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 3167
31d385ae 3168out_unlock:
8ca151b5
JB		 3169 mutex_unlock(&mvm->mutex);
3170 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 3171 return ret;
3172}
3173
3174static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3175{
3176 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3177
3178 IWL_DEBUG_MAC80211(mvm, "enter\n");
3179
3180 mutex_lock(&mvm->mutex);
bf5da87f 3181 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 3182 mutex_unlock(&mvm->mutex);
3183
3184 IWL_DEBUG_MAC80211(mvm, "leave\n");
3185 return 0;
3186}
3187
b08c1d97
LC		 3188static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3189 struct ieee80211_chanctx_conf *ctx)
8ca151b5 3190{
fe0f2de3
IP		 3191 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3192 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 3193 int ret;
3194
b08c1d97
LC		 3195 lockdep_assert_held(&mvm->mutex);
3196
53a9d61e 3197 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 3198
fe0f2de3
IP		 3199 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3200 if (!phy_ctxt) {
3201 ret = -ENOSPC;
3202 goto out;
3203 }
8ca151b5 3204
dcbc3e1a 3205 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 3206 ctx->rx_chains_static,
3207 ctx->rx_chains_dynamic);
fe0f2de3
IP		 3208 if (ret) {
3209 IWL_ERR(mvm, "Failed to add PHY context\n");
3210 goto out;
3211 }
3212
53a9d61e 3213 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 3214 *phy_ctxt_id = phy_ctxt->id;
3215out:
b08c1d97
LC		 3216 return ret;
3217}
3218
3219static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3220 struct ieee80211_chanctx_conf *ctx)
3221{
3222 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3223 int ret;
3224
3225 mutex_lock(&mvm->mutex);
3226 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 3227 mutex_unlock(&mvm->mutex);
b08c1d97 3228
8ca151b5
JB		 3229 return ret;
3230}
3231
b08c1d97
LC		 3232static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3233 struct ieee80211_chanctx_conf *ctx)
3234{
3235 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3236 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3237
3238 lockdep_assert_held(&mvm->mutex);
3239
3240 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3241}
3242
8ca151b5
JB		 3243static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3244 struct ieee80211_chanctx_conf *ctx)
3245{
3246 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 3247
3248 mutex_lock(&mvm->mutex);
b08c1d97 3249 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 3250 mutex_unlock(&mvm->mutex);
3251}
3252
3253static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3254 struct ieee80211_chanctx_conf *ctx,
3255 u32 changed)
3256{
3257 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 3258 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3259 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 3260
31d385ae
IP		 3261 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3262 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3263 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 3264 IEEE80211_CHANCTX_CHANGE_RADAR |
3265 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 3266 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3267 phy_ctxt->ref, changed))
3268 return;
3269
8ca151b5 3270 mutex_lock(&mvm->mutex);
4d66449a 3271 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 3272 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 3273 ctx->rx_chains_static,
3274 ctx->rx_chains_dynamic);
3275 mutex_unlock(&mvm->mutex);
3276}
3277
b08c1d97
LC		 3278static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3279 struct ieee80211_vif *vif,
f0c97783
LC		 3280 struct ieee80211_chanctx_conf *ctx,
3281 bool switching_chanctx)
8ca151b5 3282{
fe0f2de3
IP		 3283 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3284 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 3285 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3286 int ret;
3287
b08c1d97 3288 lockdep_assert_held(&mvm->mutex);
8ca151b5 3289
fe0f2de3 3290 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 3291
3292 switch (vif->type) {
3293 case NL80211_IFTYPE_AP:
4741dd04
LC		 3294 /* only needed if we're switching chanctx (i.e. during CSA) */
3295 if (switching_chanctx) {
bd3398e2
AO		 3296 mvmvif->ap_ibss_active = true;
3297 break;
3298 }
5023d966 3299 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 3300 /*
3301 * The AP binding flow is handled as part of the start_ap flow
5023d966 3302 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 3303 */
3304 ret = 0;
b08c1d97 3305 goto out;
8ca151b5 3306 case NL80211_IFTYPE_STATION:
2533edce 3307 break;
8ca151b5 3308 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 3309 /* always disable PS when a monitor interface is active */
3310 mvmvif->ps_disabled = true;
8ca151b5
JB		 3311 break;
3312 default:
3313 ret = -EINVAL;
b08c1d97 3314 goto out;
8ca151b5
JB		 3315 }
3316
3317 ret = iwl_mvm_binding_add_vif(mvm, vif);
3318 if (ret)
b08c1d97 3319 goto out;
8ca151b5
JB		 3320
3321 /*
92d85562
AB		 3322 * Power state must be updated before quotas,
3323 * otherwise fw will complain.
3324 */
999609f1 3325 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 3326
3327 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 3328 * interfaces. For the other types, the bss_info changed flow
3329 * will handle quota settings.
3330 */
3331 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 3332 mvmvif->monitor_active = true;
7754ae79 3333 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 3334 if (ret)
3335 goto out_remove_binding;
3336 }
3337
bd3398e2 3338 /* Handle binding during CSA */
a57c688d 3339 if (vif->type == NL80211_IFTYPE_AP) {
7754ae79 3340 iwl_mvm_update_quotas(mvm, false, NULL);
3dfd3a97 3341 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 3342 }
3343
4741dd04 3344 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 3345 u32 duration = 2 * vif->bss_conf.beacon_int;
3346
3347 /* iwl_mvm_protect_session() reads directly from the
3348 * device (the system time), so make sure it is
3349 * available.
3350 */
3351 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3352 if (ret)
3353 goto out_remove_binding;
3354
3355 /* Protect the session to make sure we hear the first
3356 * beacon on the new channel.
3357 */
3358 iwl_mvm_protect_session(mvm, vif, duration, duration,
3359 vif->bss_conf.beacon_int / 2,
3360 true);
3361
3362 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3363
7754ae79 3364 iwl_mvm_update_quotas(mvm, false, NULL);
0ce04ce7
LC		 3365 }
3366
b08c1d97 3367 goto out;
8ca151b5 3368
b08c1d97 3369out_remove_binding:
8ca151b5 3370 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 3371 iwl_mvm_power_update_mac(mvm);
b08c1d97 3372out:
8ca151b5
JB		 3373 if (ret)
3374 mvmvif->phy_ctxt = NULL;
3375 return ret;
3376}
b08c1d97
LC		 3377static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3378 struct ieee80211_vif *vif,
3379 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 3380{
3381 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 3382 int ret;
8ca151b5
JB		 3383
3384 mutex_lock(&mvm->mutex);
f0c97783 3385 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 3386 mutex_unlock(&mvm->mutex);
3387
3388 return ret;
3389}
3390
3391static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3392 struct ieee80211_vif *vif,
f0c97783
LC		 3393 struct ieee80211_chanctx_conf *ctx,
3394 bool switching_chanctx)
b08c1d97
LC		 3395{
3396 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 3397 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 3398
3399 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 3400
3401 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3402
8ca151b5 3403 switch (vif->type) {
5023d966 3404 case NL80211_IFTYPE_ADHOC:
b08c1d97 3405 goto out;
8ca151b5 3406 case NL80211_IFTYPE_MONITOR:
1e1391ca 3407 mvmvif->monitor_active = false;
2533edce 3408 mvmvif->ps_disabled = false;
8ca151b5 3409 break;
bd3398e2
AO		 3410 case NL80211_IFTYPE_AP:
3411 /* This part is triggered only during CSA */
4741dd04 3412 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 3413 goto out;
bd3398e2 3414
7ef0aab6
AO		 3415 mvmvif->csa_countdown = false;
3416
003e5236
AO		 3417 /* Set CS bit on all the stations */
3418 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3419
3420 /* Save blocked iface, the timeout is set on the next beacon */
3421 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3422
bd3398e2 3423 mvmvif->ap_ibss_active = false;
f0c97783
LC		 3424 break;
3425 case NL80211_IFTYPE_STATION:
3426 if (!switching_chanctx)
3427 break;
3428
3429 disabled_vif = vif;
3430
3dfd3a97 3431 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 3432 break;
8ca151b5
JB		 3433 default:
3434 break;
3435 }
3436
7754ae79 3437 iwl_mvm_update_quotas(mvm, false, disabled_vif);
1e1391ca 3438 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 3439
b08c1d97 3440out:
a11e144e 3441 mvmvif->phy_ctxt = NULL;
999609f1 3442 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 3443}
3444
3445static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3446 struct ieee80211_vif *vif,
3447 struct ieee80211_chanctx_conf *ctx)
3448{
3449 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3450
3451 mutex_lock(&mvm->mutex);
f0c97783 3452 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 3453 mutex_unlock(&mvm->mutex);
3454}
3455
50cc9574
LC		 3456static int
3457iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3458 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3459{
b08c1d97
LC		 3460 int ret;
3461
b08c1d97 3462 mutex_lock(&mvm->mutex);
f0c97783 3463 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3464 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3465
3466 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3467 if (ret) {
3468 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3469 goto out_reassign;
3470 }
3471
f0c97783
LC		 3472 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3473 true);
b08c1d97
LC		 3474 if (ret) {
3475 IWL_ERR(mvm,
3476 "failed to assign new_ctx during channel switch\n");
3477 goto out_remove;
3478 }
3479
f697267f
AN		 3480 /* we don't support TDLS during DCM - can be caused by channel switch */
3481 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3482 iwl_mvm_teardown_tdls_peers(mvm);
3483
b08c1d97
LC		 3484 goto out;
3485
3486out_remove:
3487 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3488
3489out_reassign:
6fd1fb63 3490 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3491 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3492 goto out_restart;
3493 }
3494
6fd1fb63
LC		 3495 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3496 true)) {
b08c1d97
LC		 3497 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3498 goto out_restart;
3499 }
3500
3501 goto out;
3502
3503out_restart:
3504 /* things keep failing, better restart the hw */
3505 iwl_mvm_nic_restart(mvm, false);
3506
3507out:
3508 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3509
3510 return ret;
3511}
3512
48a256e8
LC		 3513static int
3514iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3515 struct ieee80211_vif_chanctx_switch *vifs)
3516{
3517 int ret;
3518
3519 mutex_lock(&mvm->mutex);
3520 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3521
3522 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3523 true);
3524 if (ret) {
3525 IWL_ERR(mvm,
3526 "failed to assign new_ctx during channel switch\n");
3527 goto out_reassign;
3528 }
3529
3530 goto out;
3531
3532out_reassign:
3533 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3534 true)) {
3535 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3536 goto out_restart;
3537 }
3538
3539 goto out;
3540
3541out_restart:
3542 /* things keep failing, better restart the hw */
3543 iwl_mvm_nic_restart(mvm, false);
3544
3545out:
3546 mutex_unlock(&mvm->mutex);
3547
3548 return ret;
3549}
3550
50cc9574
LC		 3551static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3552 struct ieee80211_vif_chanctx_switch *vifs,
3553 int n_vifs,
3554 enum ieee80211_chanctx_switch_mode mode)
3555{
3556 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3557 int ret;
3558
3559 /* we only support a single-vif right now */
3560 if (n_vifs > 1)
3561 return -EOPNOTSUPP;
3562
3563 switch (mode) {
3564 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3565 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3566 break;
3567 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3568 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3569 break;
3570 default:
3571 ret = -EOPNOTSUPP;
3572 break;
3573 }
3574
b08c1d97
LC		 3575 return ret;
3576}
3577
8ca151b5
JB		 3578static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3579 struct ieee80211_sta *sta,
3580 bool set)
3581{
3582 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 3583 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 3584
3585 if (!mvm_sta || !mvm_sta->vif) {
3586 IWL_ERR(mvm, "Station is not associated to a vif\n");
3587 return -EINVAL;
3588 }
3589
3590 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3591}
3592
507cadf2
DS		 3593#ifdef CONFIG_NL80211_TESTMODE
3594static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3595 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3596 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3597 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3598};
3599
3600static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3601 struct ieee80211_vif *vif,
3602 void *data, int len)
3603{
3604 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3605 int err;
3606 u32 noa_duration;
3607
3608 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3609 if (err)
3610 return err;
3611
3612 if (!tb[IWL_MVM_TM_ATTR_CMD])
3613 return -EINVAL;
3614
3615 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3616 case IWL_MVM_TM_CMD_SET_NOA:
3617 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3618 !vif->bss_conf.enable_beacon ||
3619 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3620 return -EINVAL;
3621
3622 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3623 if (noa_duration >= vif->bss_conf.beacon_int)
3624 return -EINVAL;
3625
3626 mvm->noa_duration = noa_duration;
3627 mvm->noa_vif = vif;
3628
7754ae79 3629 return iwl_mvm_update_quotas(mvm, false, NULL);
f6c6ad42
JB		 3630 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3631 /* must be associated client vif - ignore authorized */
3632 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3633 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3634 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3635 return -EINVAL;
3636
3637 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3638 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3639 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3640 }
3641
3642 return -EOPNOTSUPP;
3643}
3644
3645static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3646 struct ieee80211_vif *vif,
3647 void *data, int len)
3648{
3649 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3650 int err;
3651
3652 mutex_lock(&mvm->mutex);
3653 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3654 mutex_unlock(&mvm->mutex);
3655
3656 return err;
3657}
3658#endif
3659
622e3f9b
LC		 3660static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3661 struct ieee80211_vif *vif,
3662 struct ieee80211_channel_switch *chsw)
3663{
3664 /* By implementing this operation, we prevent mac80211 from
3665 * starting its own channel switch timer, so that we can call
3666 * ieee80211_chswitch_done() ourselves at the right time
3667 * (which is when the absence time event starts).
3668 */
3669
3670 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3671 "dummy channel switch op\n");
3672}
3673
f028905c
LC		 3674static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3675 struct ieee80211_vif *vif,
3676 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3677{
3678 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3679 struct ieee80211_vif *csa_vif;
f6c34820 3680 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3681 u32 apply_time;
f028905c 3682 int ret;
bd3398e2
AO		 3683
3684 mutex_lock(&mvm->mutex);
664322fa 3685
81d62d5a
JB		 3686 mvmvif->csa_failed = false;
3687
6b20d774 3688 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3689 chsw->chandef.center_freq1);
6b20d774 3690
f35d9c55
EG		 3691 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH,
3692 NULL, 0);
3693
6b20d774
LC		 3694 switch (vif->type) {
3695 case NL80211_IFTYPE_AP:
3696 csa_vif =
3697 rcu_dereference_protected(mvm->csa_vif,
3698 lockdep_is_held(&mvm->mutex));
3699 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3700 "Another CSA is already in progress")) {
3701 ret = -EBUSY;
3702 goto out_unlock;
3703 }
3704
3705 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3706
7ef0aab6
AO		 3707 if (WARN_ONCE(mvmvif->csa_countdown,
3708 "Previous CSA countdown didn't complete")) {
3709 ret = -EBUSY;
3710 goto out_unlock;
3711 }
3712
6b20d774 3713 break;
dc88b4ba 3714 case NL80211_IFTYPE_STATION:
4500e133
LC		 3715 /* Schedule the time event to a bit before beacon 1,
3716 * to make sure we're in the new channel when the
3717 * GO/AP arrives.
3718 */
3719 apply_time = chsw->device_timestamp +
3720 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3721 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3722
3723 if (chsw->block_tx)
3724 iwl_mvm_csa_client_absent(mvm, vif);
3725
4500e133 3726 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3727 apply_time);
c6e0a3e0
LC		 3728 if (mvmvif->bf_data.bf_enabled) {
3729 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3730 if (ret)
3731 goto out_unlock;
3732 }
3733
dc88b4ba 3734 break;
6b20d774
LC		 3735 default:
3736 break;
3737 }
bd3398e2 3738
f6c34820
LC		 3739 mvmvif->ps_disabled = true;
3740
3741 ret = iwl_mvm_power_update_ps(mvm);
3742 if (ret)
3743 goto out_unlock;
f028905c 3744
e198f5e7
AN		 3745 /* we won't be on this channel any longer */
3746 iwl_mvm_teardown_tdls_peers(mvm);
3747
bd3398e2
AO		 3748out_unlock:
3749 mutex_unlock(&mvm->mutex);
f028905c
LC		 3750
3751 return ret;
bd3398e2
AO		 3752}
3753
f6c34820
LC		 3754static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3755 struct ieee80211_vif *vif)
3756{
3757 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3758 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3759 int ret;
3760
3761 mutex_lock(&mvm->mutex);
3762
81d62d5a
JB		 3763 if (mvmvif->csa_failed) {
3764 mvmvif->csa_failed = false;
3765 ret = -EIO;
3766 goto out_unlock;
3767 }
3768
a57c688d
LC		 3769 if (vif->type == NL80211_IFTYPE_STATION) {
3770 struct iwl_mvm_sta *mvmsta;
3771
3772 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3773 mvmvif->ap_sta_id);
3774
3775 if (WARN_ON(!mvmsta)) {
3776 ret = -EIO;
3777 goto out_unlock;
3778 }
3779
3780 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3781
3782 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3783
3784 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3785 if (ret)
3786 goto out_unlock;
686e7fe1
LC		 3787
3788 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3789 }
3790
f6c34820
LC		 3791 mvmvif->ps_disabled = false;
3792
3793 ret = iwl_mvm_power_update_ps(mvm);
3794
a57c688d 3795out_unlock:
f6c34820
LC		 3796 mutex_unlock(&mvm->mutex);
3797
3798 return ret;
3799}
3800
c5b0e7c0
EG		 3801static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3802 struct ieee80211_vif *vif, u32 queues, bool drop)
3803{
3804 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3805 struct iwl_mvm_vif *mvmvif;
3806 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3807 struct ieee80211_sta *sta;
3808 int i;
3809 u32 msk = 0;
c5b0e7c0
EG		 3810
3811 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3812 return;
3813
3814 mutex_lock(&mvm->mutex);
3815 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3816
a0f6bf2a
AN		 3817 /* flush the AP-station and all TDLS peers */
3818 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3819 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3820 lockdep_is_held(&mvm->mutex));
3821 if (IS_ERR_OR_NULL(sta))
3822 continue;
3823
3824 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3825 if (mvmsta->vif != vif)
3826 continue;
3827
3828 /* make sure only TDLS peers or the AP are flushed */
3829 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3830
3831 msk |= mvmsta->tfd_queue_msk;
480acbce 3832 }
c5b0e7c0 3833
6d440b25
EG		 3834 if (drop) {
3835 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3836 IWL_ERR(mvm, "flush request fail\n");
3837 mutex_unlock(&mvm->mutex);
3838 } else {
3839 mutex_unlock(&mvm->mutex);
4e6c48e0 3840
6d440b25
EG		 3841 /* this can take a while, and we may need/want other operations
3842 * to succeed while doing this, so do it without the mutex held
3843 */
3844 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3845 }
c5b0e7c0
EG		 3846}
3847
91a8bcde
JB		 3848static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3849 struct survey_info *survey)
3850{
3851 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3852 int ret;
3853
3854 memset(survey, 0, sizeof(*survey));
3855
3856 /* only support global statistics right now */
3857 if (idx != 0)
3858 return -ENOENT;
3859
3860 if (!(mvm->fw->ucode_capa.capa[0] &
3861 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3862 return -ENOENT;
3863
3864 mutex_lock(&mvm->mutex);
3865
3866 if (mvm->ucode_loaded) {
33cef925 3867 ret = iwl_mvm_request_statistics(mvm, false);
91a8bcde
JB		 3868 if (ret)
3869 goto out;
3870 }
3871
3872 survey->filled = SURVEY_INFO_TIME |
3873 SURVEY_INFO_TIME_RX |
3874 SURVEY_INFO_TIME_TX |
3875 SURVEY_INFO_TIME_SCAN;
3876 survey->time = mvm->accu_radio_stats.on_time_rf +
3877 mvm->radio_stats.on_time_rf;
3878 do_div(survey->time, USEC_PER_MSEC);
3879
3880 survey->time_rx = mvm->accu_radio_stats.rx_time +
3881 mvm->radio_stats.rx_time;
3882 do_div(survey->time_rx, USEC_PER_MSEC);
3883
3884 survey->time_tx = mvm->accu_radio_stats.tx_time +
3885 mvm->radio_stats.tx_time;
3886 do_div(survey->time_tx, USEC_PER_MSEC);
3887
3888 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3889 mvm->radio_stats.on_time_scan;
3890 do_div(survey->time_scan, USEC_PER_MSEC);
3891
3892 out:
3893 mutex_unlock(&mvm->mutex);
3894 return ret;
3895}
3896
33cef925
JB		 3897static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3898 struct ieee80211_vif *vif,
3899 struct ieee80211_sta *sta,
3900 struct station_info *sinfo)
3901{
3902 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3903 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3904 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3905
3906 if (!(mvm->fw->ucode_capa.capa[0] &
3907 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3908 return;
3909
3910 /* if beacon filtering isn't on mac80211 does it anyway */
3911 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3912 return;
3913
3914 if (!vif->bss_conf.assoc)
3915 return;
3916
3917 mutex_lock(&mvm->mutex);
3918
3919 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3920 goto unlock;
3921
3922 if (iwl_mvm_request_statistics(mvm, false))
3923 goto unlock;
3924
3925 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3926 mvmvif->beacon_stats.accu_num_beacons;
3927 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3928 if (mvmvif->beacon_stats.avg_signal) {
3929 /* firmware only reports a value after RXing a few beacons */
3930 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3931 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3932 }
3933 unlock:
3934 mutex_unlock(&mvm->mutex);
3935}
3936
e5209263 3937const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3938 .tx = iwl_mvm_mac_tx,
3939 .ampdu_action = iwl_mvm_mac_ampdu_action,
3940 .start = iwl_mvm_mac_start,
cf2c92d8 3941 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 3942 .stop = iwl_mvm_mac_stop,
3943 .add_interface = iwl_mvm_mac_add_interface,
3944 .remove_interface = iwl_mvm_mac_remove_interface,
3945 .config = iwl_mvm_mac_config,
e59647ea 3946 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 3947 .configure_filter = iwl_mvm_configure_filter,
3948 .bss_info_changed = iwl_mvm_bss_info_changed,
3949 .hw_scan = iwl_mvm_mac_hw_scan,
3950 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3951 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3952 .sta_state = iwl_mvm_mac_sta_state,
3953 .sta_notify = iwl_mvm_mac_sta_notify,
3954 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3955 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3956 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3957 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3958 .conf_tx = iwl_mvm_mac_conf_tx,
3959 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3960 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3961 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3962 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3963 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3964 .set_key = iwl_mvm_mac_set_key,
3965 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3966 .remain_on_channel = iwl_mvm_roc,
3967 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3968 .add_chanctx = iwl_mvm_add_chanctx,
3969 .remove_chanctx = iwl_mvm_remove_chanctx,
3970 .change_chanctx = iwl_mvm_change_chanctx,
3971 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3972 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3973 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3974
5023d966
JB		 3975 .start_ap = iwl_mvm_start_ap_ibss,
3976 .stop_ap = iwl_mvm_stop_ap_ibss,
3977 .join_ibss = iwl_mvm_start_ap_ibss,
3978 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3979
3980 .set_tim = iwl_mvm_set_tim,
3981
622e3f9b 3982 .channel_switch = iwl_mvm_channel_switch,
f028905c 3983 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 3984 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 3985
1d3c3f63
AN		 3986 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3987 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3988 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3989
507cadf2
DS		 3990 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3991
8ca151b5
JB		 3992#ifdef CONFIG_PM_SLEEP
3993 /* look at d3.c */
3994 .suspend = iwl_mvm_suspend,
3995 .resume = iwl_mvm_resume,
3996 .set_wakeup = iwl_mvm_set_wakeup,
3997 .set_rekey_data = iwl_mvm_set_rekey_data,
3998#if IS_ENABLED(CONFIG_IPV6)
3999 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4000#endif
4001 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4002#endif
91a8bcde 4003 .get_survey = iwl_mvm_mac_get_survey,
33cef925 4004 .sta_statistics = iwl_mvm_mac_sta_statistics,
8ca151b5 4005};
Linux kernel - Deliverables
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