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9ee718aa EL |
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) 2013 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 9 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
0a3b7119 | 10 | * Copyright(c) 2015 - 2016 Intel Deutschland GmbH |
9ee718aa EL |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
27 | * in the file called COPYING. | |
28 | * | |
29 | * Contact Information: | |
d01c5366 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
9ee718aa EL |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
51368bf7 | 35 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 36 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
0a3b7119 | 37 | * Copyright(c) 2015 - 2016 Intel Deutschland GmbH |
9ee718aa EL |
38 | * All rights reserved. |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
67 | ||
c221daf2 CRI |
68 | #include <linux/sort.h> |
69 | ||
9ee718aa | 70 | #include "mvm.h" |
9ee718aa | 71 | |
a0a09243 | 72 | #define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ |
9ee718aa | 73 | |
a0a09243 | 74 | static void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm) |
9ee718aa | 75 | { |
19789abb | 76 | struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle; |
3444682a | 77 | u32 duration = tt->params.ct_kill_duration; |
9ee718aa | 78 | |
a0a09243 LC |
79 | if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) |
80 | return; | |
9ee718aa | 81 | |
a0a09243 LC |
82 | IWL_ERR(mvm, "Enter CT Kill\n"); |
83 | iwl_mvm_set_hw_ctkill_state(mvm, true); | |
9ee718aa | 84 | |
c221daf2 CRI |
85 | if (!iwl_mvm_is_tt_in_fw(mvm)) { |
86 | tt->throttle = false; | |
87 | tt->dynamic_smps = false; | |
88 | } | |
19789abb | 89 | |
a0a09243 LC |
90 | /* Don't schedule an exit work if we're in test mode, since |
91 | * the temperature will not change unless we manually set it | |
92 | * again (or disable testing). | |
93 | */ | |
94 | if (!mvm->temperature_test) | |
19789abb | 95 | schedule_delayed_work(&tt->ct_kill_exit, |
a0a09243 | 96 | round_jiffies_relative(duration * HZ)); |
9ee718aa EL |
97 | } |
98 | ||
a0a09243 | 99 | static void iwl_mvm_exit_ctkill(struct iwl_mvm *mvm) |
9ee718aa | 100 | { |
a0a09243 LC |
101 | if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) |
102 | return; | |
9ee718aa | 103 | |
a0a09243 LC |
104 | IWL_ERR(mvm, "Exit CT Kill\n"); |
105 | iwl_mvm_set_hw_ctkill_state(mvm, false); | |
9ee718aa EL |
106 | } |
107 | ||
fd1f7550 LC |
108 | void iwl_mvm_tt_temp_changed(struct iwl_mvm *mvm, u32 temp) |
109 | { | |
110 | /* ignore the notification if we are in test mode */ | |
111 | if (mvm->temperature_test) | |
112 | return; | |
113 | ||
114 | if (mvm->temperature == temp) | |
115 | return; | |
116 | ||
117 | mvm->temperature = temp; | |
118 | iwl_mvm_tt_handler(mvm); | |
119 | } | |
120 | ||
121 | static int iwl_mvm_temp_notif_parse(struct iwl_mvm *mvm, | |
122 | struct iwl_rx_packet *pkt) | |
9ee718aa | 123 | { |
c221daf2 | 124 | struct iwl_dts_measurement_notif_v1 *notif_v1; |
a0a09243 | 125 | int len = iwl_rx_packet_payload_len(pkt); |
fd1f7550 | 126 | int temp; |
a0a09243 | 127 | |
c221daf2 CRI |
128 | /* we can use notif_v1 only, because v2 only adds an additional |
129 | * parameter, which is not used in this function. | |
130 | */ | |
131 | if (WARN_ON_ONCE(len < sizeof(*notif_v1))) { | |
a0a09243 | 132 | IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n"); |
fd1f7550 | 133 | return -EINVAL; |
a0a09243 | 134 | } |
9ee718aa | 135 | |
c221daf2 | 136 | notif_v1 = (void *)pkt->data; |
9ee718aa | 137 | |
c221daf2 | 138 | temp = le32_to_cpu(notif_v1->temp); |
9ee718aa | 139 | |
a0a09243 | 140 | /* shouldn't be negative, but since it's s32, make sure it isn't */ |
fd1f7550 LC |
141 | if (WARN_ON_ONCE(temp < 0)) |
142 | temp = 0; | |
143 | ||
144 | IWL_DEBUG_TEMP(mvm, "DTS_MEASUREMENT_NOTIFICATION - %d\n", temp); | |
145 | ||
146 | return temp; | |
147 | } | |
148 | ||
149 | static bool iwl_mvm_temp_notif_wait(struct iwl_notif_wait_data *notif_wait, | |
150 | struct iwl_rx_packet *pkt, void *data) | |
151 | { | |
152 | struct iwl_mvm *mvm = | |
153 | container_of(notif_wait, struct iwl_mvm, notif_wait); | |
154 | int *temp = data; | |
155 | int ret; | |
156 | ||
157 | ret = iwl_mvm_temp_notif_parse(mvm, pkt); | |
158 | if (ret < 0) | |
159 | return true; | |
160 | ||
161 | *temp = ret; | |
9ee718aa | 162 | |
a0a09243 | 163 | return true; |
9ee718aa EL |
164 | } |
165 | ||
0416841d | 166 | void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
ea9af24d LC |
167 | { |
168 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
c221daf2 CRI |
169 | struct iwl_dts_measurement_notif_v2 *notif_v2; |
170 | int len = iwl_rx_packet_payload_len(pkt); | |
ea9af24d | 171 | int temp; |
c221daf2 | 172 | u32 ths_crossed; |
ea9af24d LC |
173 | |
174 | /* the notification is handled synchronously in ctkill, so skip here */ | |
175 | if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) | |
0416841d | 176 | return; |
ea9af24d LC |
177 | |
178 | temp = iwl_mvm_temp_notif_parse(mvm, pkt); | |
c221daf2 CRI |
179 | |
180 | if (!iwl_mvm_is_tt_in_fw(mvm)) { | |
181 | if (temp >= 0) | |
182 | iwl_mvm_tt_temp_changed(mvm, temp); | |
183 | return; | |
184 | } | |
185 | ||
186 | if (WARN_ON_ONCE(len < sizeof(*notif_v2))) { | |
187 | IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n"); | |
188 | return; | |
189 | } | |
190 | ||
191 | notif_v2 = (void *)pkt->data; | |
192 | ths_crossed = le32_to_cpu(notif_v2->threshold_idx); | |
193 | ||
194 | /* 0xFF in ths_crossed means the notification is not related | |
195 | * to a trip, so we can ignore it here. | |
196 | */ | |
197 | if (ths_crossed == 0xFF) | |
198 | return; | |
199 | ||
200 | IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n", | |
201 | temp, ths_crossed); | |
202 | ||
203 | #ifdef CONFIG_THERMAL | |
204 | if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS)) | |
0416841d | 205 | return; |
ea9af24d | 206 | |
91f66a3c EG |
207 | if (mvm->tz_device.tzone) { |
208 | struct iwl_mvm_thermal_device *tz_dev = &mvm->tz_device; | |
209 | ||
91f66a3c EG |
210 | thermal_notify_framework(tz_dev->tzone, |
211 | tz_dev->fw_trips_index[ths_crossed]); | |
91f66a3c | 212 | } |
c221daf2 | 213 | #endif /* CONFIG_THERMAL */ |
ea9af24d LC |
214 | } |
215 | ||
0a3b7119 CRI |
216 | void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
217 | { | |
218 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
219 | struct ct_kill_notif *notif; | |
220 | int len = iwl_rx_packet_payload_len(pkt); | |
221 | ||
222 | if (WARN_ON_ONCE(len != sizeof(*notif))) { | |
223 | IWL_ERR(mvm, "Invalid CT_KILL_NOTIFICATION\n"); | |
224 | return; | |
225 | } | |
226 | ||
227 | notif = (struct ct_kill_notif *)pkt->data; | |
228 | IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n", | |
229 | notif->temperature); | |
230 | ||
231 | iwl_mvm_enter_ctkill(mvm); | |
232 | } | |
233 | ||
a0a09243 | 234 | static int iwl_mvm_get_temp_cmd(struct iwl_mvm *mvm) |
9ee718aa | 235 | { |
a0a09243 LC |
236 | struct iwl_dts_measurement_cmd cmd = { |
237 | .flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP), | |
9ee718aa | 238 | }; |
78efc702 AN |
239 | struct iwl_ext_dts_measurement_cmd extcmd = { |
240 | .control_mode = cpu_to_le32(DTS_AUTOMATIC), | |
241 | }; | |
09eef330 AE |
242 | u32 cmdid; |
243 | ||
244 | if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_WIDE_CMD_HDR)) | |
245 | cmdid = iwl_cmd_id(CMD_DTS_MEASUREMENT_TRIGGER_WIDE, | |
246 | PHY_OPS_GROUP, 0); | |
247 | else | |
248 | cmdid = CMD_DTS_MEASUREMENT_TRIGGER; | |
78efc702 AN |
249 | |
250 | if (!fw_has_capa(&mvm->fw->ucode_capa, | |
251 | IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE)) | |
252 | return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(cmd), &cmd); | |
253 | ||
254 | return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(extcmd), &extcmd); | |
9ee718aa EL |
255 | } |
256 | ||
7869318e | 257 | int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp) |
9ee718aa | 258 | { |
a0a09243 | 259 | struct iwl_notification_wait wait_temp_notif; |
09eef330 AE |
260 | static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP, |
261 | DTS_MEASUREMENT_NOTIF_WIDE) }; | |
7869318e | 262 | int ret; |
9ee718aa | 263 | |
09eef330 AE |
264 | if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_WIDE_CMD_HDR)) |
265 | temp_notif[0] = DTS_MEASUREMENT_NOTIFICATION; | |
266 | ||
a0a09243 | 267 | lockdep_assert_held(&mvm->mutex); |
b689fa79 | 268 | |
a0a09243 LC |
269 | iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif, |
270 | temp_notif, ARRAY_SIZE(temp_notif), | |
7869318e | 271 | iwl_mvm_temp_notif_wait, temp); |
efc36dbd | 272 | |
a0a09243 LC |
273 | ret = iwl_mvm_get_temp_cmd(mvm); |
274 | if (ret) { | |
275 | IWL_ERR(mvm, "Failed to get the temperature (err=%d)\n", ret); | |
276 | iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif); | |
277 | return ret; | |
278 | } | |
9ee718aa | 279 | |
a0a09243 LC |
280 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif, |
281 | IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT); | |
7869318e | 282 | if (ret) |
a0a09243 | 283 | IWL_ERR(mvm, "Getting the temperature timed out\n"); |
b689fa79 | 284 | |
7869318e | 285 | return ret; |
9ee718aa EL |
286 | } |
287 | ||
288 | static void check_exit_ctkill(struct work_struct *work) | |
289 | { | |
290 | struct iwl_mvm_tt_mgmt *tt; | |
291 | struct iwl_mvm *mvm; | |
292 | u32 duration; | |
293 | s32 temp; | |
7869318e | 294 | int ret; |
9ee718aa EL |
295 | |
296 | tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work); | |
297 | mvm = container_of(tt, struct iwl_mvm, thermal_throttle); | |
298 | ||
0a3b7119 CRI |
299 | if (iwl_mvm_is_tt_in_fw(mvm)) { |
300 | iwl_mvm_exit_ctkill(mvm); | |
301 | ||
302 | return; | |
303 | } | |
304 | ||
3444682a | 305 | duration = tt->params.ct_kill_duration; |
9ee718aa | 306 | |
a0a09243 LC |
307 | mutex_lock(&mvm->mutex); |
308 | ||
309 | if (__iwl_mvm_mac_start(mvm)) | |
310 | goto reschedule; | |
311 | ||
576eeee9 | 312 | /* make sure the device is available for direct read/writes */ |
a0a09243 LC |
313 | if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_CHECK_CTKILL)) { |
314 | __iwl_mvm_mac_stop(mvm); | |
576eeee9 | 315 | goto reschedule; |
a0a09243 | 316 | } |
576eeee9 | 317 | |
7869318e | 318 | ret = iwl_mvm_get_temp(mvm, &temp); |
9ee718aa | 319 | |
576eeee9 EP |
320 | iwl_mvm_unref(mvm, IWL_MVM_REF_CHECK_CTKILL); |
321 | ||
a0a09243 LC |
322 | __iwl_mvm_mac_stop(mvm); |
323 | ||
7869318e | 324 | if (ret) |
9ee718aa | 325 | goto reschedule; |
a0a09243 | 326 | |
9ee718aa EL |
327 | IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp); |
328 | ||
3444682a | 329 | if (temp <= tt->params.ct_kill_exit) { |
a0a09243 | 330 | mutex_unlock(&mvm->mutex); |
9ee718aa EL |
331 | iwl_mvm_exit_ctkill(mvm); |
332 | return; | |
333 | } | |
334 | ||
335 | reschedule: | |
a0a09243 | 336 | mutex_unlock(&mvm->mutex); |
9ee718aa EL |
337 | schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit, |
338 | round_jiffies(duration * HZ)); | |
339 | } | |
340 | ||
341 | static void iwl_mvm_tt_smps_iterator(void *_data, u8 *mac, | |
342 | struct ieee80211_vif *vif) | |
343 | { | |
344 | struct iwl_mvm *mvm = _data; | |
345 | enum ieee80211_smps_mode smps_mode; | |
346 | ||
347 | lockdep_assert_held(&mvm->mutex); | |
348 | ||
349 | if (mvm->thermal_throttle.dynamic_smps) | |
350 | smps_mode = IEEE80211_SMPS_DYNAMIC; | |
351 | else | |
352 | smps_mode = IEEE80211_SMPS_AUTOMATIC; | |
353 | ||
fded313e EL |
354 | if (vif->type != NL80211_IFTYPE_STATION) |
355 | return; | |
356 | ||
9ee718aa EL |
357 | iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode); |
358 | } | |
359 | ||
360 | static void iwl_mvm_tt_tx_protection(struct iwl_mvm *mvm, bool enable) | |
361 | { | |
362 | struct ieee80211_sta *sta; | |
363 | struct iwl_mvm_sta *mvmsta; | |
364 | int i, err; | |
365 | ||
366 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
367 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
368 | lockdep_is_held(&mvm->mutex)); | |
369 | if (IS_ERR_OR_NULL(sta)) | |
370 | continue; | |
5b577a90 | 371 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
9ee718aa EL |
372 | if (enable == mvmsta->tt_tx_protection) |
373 | continue; | |
e126b5d9 | 374 | err = iwl_mvm_tx_protection(mvm, mvmsta, enable); |
9ee718aa EL |
375 | if (err) { |
376 | IWL_ERR(mvm, "Failed to %s Tx protection\n", | |
377 | enable ? "enable" : "disable"); | |
378 | } else { | |
379 | IWL_DEBUG_TEMP(mvm, "%s Tx protection\n", | |
380 | enable ? "Enable" : "Disable"); | |
381 | mvmsta->tt_tx_protection = enable; | |
382 | } | |
383 | } | |
384 | } | |
385 | ||
0c0e2c71 | 386 | void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff) |
9ee718aa EL |
387 | { |
388 | struct iwl_host_cmd cmd = { | |
389 | .id = REPLY_THERMAL_MNG_BACKOFF, | |
390 | .len = { sizeof(u32), }, | |
391 | .data = { &backoff, }, | |
9ee718aa EL |
392 | }; |
393 | ||
0c0e2c71 IY |
394 | backoff = max(backoff, mvm->thermal_throttle.min_backoff); |
395 | ||
9ee718aa EL |
396 | if (iwl_mvm_send_cmd(mvm, &cmd) == 0) { |
397 | IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n", | |
398 | backoff); | |
399 | mvm->thermal_throttle.tx_backoff = backoff; | |
400 | } else { | |
401 | IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n"); | |
402 | } | |
403 | } | |
404 | ||
405 | void iwl_mvm_tt_handler(struct iwl_mvm *mvm) | |
406 | { | |
3444682a | 407 | struct iwl_tt_params *params = &mvm->thermal_throttle.params; |
9ee718aa EL |
408 | struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle; |
409 | s32 temperature = mvm->temperature; | |
dafe6c43 | 410 | bool throttle_enable = false; |
9ee718aa EL |
411 | int i; |
412 | u32 tx_backoff; | |
413 | ||
414 | IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature); | |
415 | ||
416 | if (params->support_ct_kill && temperature >= params->ct_kill_entry) { | |
417 | iwl_mvm_enter_ctkill(mvm); | |
418 | return; | |
419 | } | |
420 | ||
b689fa79 | 421 | if (params->support_ct_kill && |
3444682a | 422 | temperature <= params->ct_kill_exit) { |
b689fa79 LC |
423 | iwl_mvm_exit_ctkill(mvm); |
424 | return; | |
425 | } | |
426 | ||
9ee718aa EL |
427 | if (params->support_dynamic_smps) { |
428 | if (!tt->dynamic_smps && | |
429 | temperature >= params->dynamic_smps_entry) { | |
430 | IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n"); | |
431 | tt->dynamic_smps = true; | |
432 | ieee80211_iterate_active_interfaces_atomic( | |
433 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
434 | iwl_mvm_tt_smps_iterator, mvm); | |
dafe6c43 | 435 | throttle_enable = true; |
9ee718aa EL |
436 | } else if (tt->dynamic_smps && |
437 | temperature <= params->dynamic_smps_exit) { | |
438 | IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n"); | |
439 | tt->dynamic_smps = false; | |
440 | ieee80211_iterate_active_interfaces_atomic( | |
441 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
442 | iwl_mvm_tt_smps_iterator, mvm); | |
443 | } | |
444 | } | |
445 | ||
446 | if (params->support_tx_protection) { | |
dafe6c43 | 447 | if (temperature >= params->tx_protection_entry) { |
9ee718aa | 448 | iwl_mvm_tt_tx_protection(mvm, true); |
dafe6c43 | 449 | throttle_enable = true; |
450 | } else if (temperature <= params->tx_protection_exit) { | |
9ee718aa | 451 | iwl_mvm_tt_tx_protection(mvm, false); |
dafe6c43 | 452 | } |
9ee718aa EL |
453 | } |
454 | ||
455 | if (params->support_tx_backoff) { | |
1b8ebbd3 | 456 | tx_backoff = tt->min_backoff; |
9ee718aa EL |
457 | for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) { |
458 | if (temperature < params->tx_backoff[i].temperature) | |
459 | break; | |
1b8ebbd3 EL |
460 | tx_backoff = max(tt->min_backoff, |
461 | params->tx_backoff[i].backoff); | |
9ee718aa | 462 | } |
1b8ebbd3 | 463 | if (tx_backoff != tt->min_backoff) |
dafe6c43 | 464 | throttle_enable = true; |
9ee718aa EL |
465 | if (tt->tx_backoff != tx_backoff) |
466 | iwl_mvm_tt_tx_backoff(mvm, tx_backoff); | |
467 | } | |
dafe6c43 | 468 | |
469 | if (!tt->throttle && throttle_enable) { | |
470 | IWL_WARN(mvm, | |
471 | "Due to high temperature thermal throttling initiated\n"); | |
472 | tt->throttle = true; | |
19a04bdd EL |
473 | } else if (tt->throttle && !tt->dynamic_smps && |
474 | tt->tx_backoff == tt->min_backoff && | |
dafe6c43 | 475 | temperature <= params->tx_protection_exit) { |
476 | IWL_WARN(mvm, | |
477 | "Temperature is back to normal thermal throttling stopped\n"); | |
478 | tt->throttle = false; | |
479 | } | |
9ee718aa EL |
480 | } |
481 | ||
3444682a | 482 | static const struct iwl_tt_params iwl_mvm_default_tt_params = { |
9ee718aa EL |
483 | .ct_kill_entry = 118, |
484 | .ct_kill_exit = 96, | |
485 | .ct_kill_duration = 5, | |
486 | .dynamic_smps_entry = 114, | |
487 | .dynamic_smps_exit = 110, | |
488 | .tx_protection_entry = 114, | |
489 | .tx_protection_exit = 108, | |
490 | .tx_backoff = { | |
491 | {.temperature = 112, .backoff = 200}, | |
492 | {.temperature = 113, .backoff = 600}, | |
493 | {.temperature = 114, .backoff = 1200}, | |
494 | {.temperature = 115, .backoff = 2000}, | |
495 | {.temperature = 116, .backoff = 4000}, | |
496 | {.temperature = 117, .backoff = 10000}, | |
497 | }, | |
498 | .support_ct_kill = true, | |
499 | .support_dynamic_smps = true, | |
500 | .support_tx_protection = true, | |
501 | .support_tx_backoff = true, | |
502 | }; | |
503 | ||
b358993b CRI |
504 | /* budget in mWatt */ |
505 | static const u32 iwl_mvm_cdev_budgets[] = { | |
506 | 2000, /* cooling state 0 */ | |
507 | 1800, /* cooling state 1 */ | |
508 | 1600, /* cooling state 2 */ | |
509 | 1400, /* cooling state 3 */ | |
510 | 1200, /* cooling state 4 */ | |
511 | 1000, /* cooling state 5 */ | |
512 | 900, /* cooling state 6 */ | |
513 | 800, /* cooling state 7 */ | |
514 | 700, /* cooling state 8 */ | |
515 | 650, /* cooling state 9 */ | |
516 | 600, /* cooling state 10 */ | |
517 | 550, /* cooling state 11 */ | |
518 | 500, /* cooling state 12 */ | |
519 | 450, /* cooling state 13 */ | |
520 | 400, /* cooling state 14 */ | |
521 | 350, /* cooling state 15 */ | |
522 | 300, /* cooling state 16 */ | |
523 | 250, /* cooling state 17 */ | |
524 | 200, /* cooling state 18 */ | |
525 | 150, /* cooling state 19 */ | |
526 | }; | |
527 | ||
528 | int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 state) | |
00f481bd CRI |
529 | { |
530 | struct iwl_mvm_ctdp_cmd cmd = { | |
531 | .operation = cpu_to_le32(op), | |
b358993b | 532 | .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]), |
00f481bd CRI |
533 | .window_size = 0, |
534 | }; | |
535 | int ret; | |
536 | u32 status; | |
537 | ||
538 | lockdep_assert_held(&mvm->mutex); | |
539 | ||
540 | ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP, | |
541 | CTDP_CONFIG_CMD), | |
542 | sizeof(cmd), &cmd, &status); | |
543 | ||
544 | if (ret) { | |
545 | IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret); | |
546 | return ret; | |
547 | } | |
548 | ||
549 | switch (op) { | |
550 | case CTDP_CMD_OPERATION_START: | |
551 | #ifdef CONFIG_THERMAL | |
b358993b | 552 | mvm->cooling_dev.cur_state = state; |
00f481bd CRI |
553 | #endif /* CONFIG_THERMAL */ |
554 | break; | |
555 | case CTDP_CMD_OPERATION_REPORT: | |
556 | IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status); | |
557 | /* when the function is called with CTDP_CMD_OPERATION_REPORT | |
558 | * option the function should return the average budget value | |
559 | * that is received from the FW. | |
560 | * The budget can't be less or equal to 0, so it's possible | |
561 | * to distinguish between error values and budgets. | |
562 | */ | |
563 | return status; | |
564 | case CTDP_CMD_OPERATION_STOP: | |
565 | IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n"); | |
566 | break; | |
567 | } | |
568 | ||
569 | return 0; | |
570 | } | |
571 | ||
c221daf2 CRI |
572 | #ifdef CONFIG_THERMAL |
573 | static int compare_temps(const void *a, const void *b) | |
574 | { | |
575 | return ((s16)le16_to_cpu(*(__le16 *)a) - | |
576 | (s16)le16_to_cpu(*(__le16 *)b)); | |
577 | } | |
578 | ||
579 | int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm) | |
580 | { | |
581 | struct temp_report_ths_cmd cmd = {0}; | |
582 | int ret, i, j, idx = 0; | |
583 | ||
584 | lockdep_assert_held(&mvm->mutex); | |
585 | ||
91f66a3c EG |
586 | if (!mvm->tz_device.tzone) |
587 | return -EINVAL; | |
588 | ||
c221daf2 CRI |
589 | /* The driver holds array of temperature trips that are unsorted |
590 | * and uncompressed, the FW should get it compressed and sorted | |
591 | */ | |
592 | ||
593 | /* compress temp_trips to cmd array, remove uninitialized values*/ | |
91f66a3c | 594 | for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) { |
c221daf2 CRI |
595 | if (mvm->tz_device.temp_trips[i] != S16_MIN) { |
596 | cmd.thresholds[idx++] = | |
597 | cpu_to_le16(mvm->tz_device.temp_trips[i]); | |
598 | } | |
91f66a3c | 599 | } |
c221daf2 CRI |
600 | cmd.num_temps = cpu_to_le32(idx); |
601 | ||
602 | if (!idx) | |
603 | goto send; | |
604 | ||
605 | /*sort cmd array*/ | |
606 | sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL); | |
607 | ||
608 | /* we should save the indexes of trips because we sort | |
609 | * and compress the orginal array | |
610 | */ | |
611 | for (i = 0; i < idx; i++) { | |
612 | for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) { | |
613 | if (le16_to_cpu(cmd.thresholds[i]) == | |
614 | mvm->tz_device.temp_trips[j]) | |
615 | mvm->tz_device.fw_trips_index[i] = j; | |
616 | } | |
617 | } | |
618 | ||
619 | send: | |
620 | ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP, | |
621 | TEMP_REPORTING_THRESHOLDS_CMD), | |
622 | 0, sizeof(cmd), &cmd); | |
623 | if (ret) | |
624 | IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n", | |
625 | ret); | |
626 | ||
627 | return ret; | |
628 | } | |
629 | ||
630 | static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device, | |
631 | int *temperature) | |
632 | { | |
633 | struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata; | |
634 | int ret; | |
635 | int temp; | |
636 | ||
637 | mutex_lock(&mvm->mutex); | |
638 | ||
639 | if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) { | |
640 | ret = -EIO; | |
641 | goto out; | |
642 | } | |
643 | ||
644 | ret = iwl_mvm_get_temp(mvm, &temp); | |
645 | if (ret) | |
646 | goto out; | |
647 | ||
648 | *temperature = temp * 1000; | |
649 | ||
650 | out: | |
651 | mutex_unlock(&mvm->mutex); | |
652 | return ret; | |
653 | } | |
654 | ||
655 | static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device *device, | |
656 | int trip, int *temp) | |
657 | { | |
658 | struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata; | |
659 | ||
660 | if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) | |
661 | return -EINVAL; | |
662 | ||
663 | *temp = mvm->tz_device.temp_trips[trip] * 1000; | |
664 | ||
665 | return 0; | |
666 | } | |
667 | ||
668 | static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device *device, | |
669 | int trip, enum thermal_trip_type *type) | |
670 | { | |
671 | if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) | |
672 | return -EINVAL; | |
673 | ||
674 | *type = THERMAL_TRIP_PASSIVE; | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
679 | static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device, | |
680 | int trip, int temp) | |
681 | { | |
682 | struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata; | |
683 | struct iwl_mvm_thermal_device *tzone; | |
684 | int i, ret; | |
685 | s16 temperature; | |
686 | ||
687 | mutex_lock(&mvm->mutex); | |
688 | ||
689 | if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) { | |
690 | ret = -EIO; | |
691 | goto out; | |
692 | } | |
693 | ||
694 | if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) { | |
695 | ret = -EINVAL; | |
696 | goto out; | |
697 | } | |
698 | ||
699 | if ((temp / 1000) > S16_MAX) { | |
700 | ret = -EINVAL; | |
701 | goto out; | |
702 | } | |
703 | ||
704 | temperature = (s16)(temp / 1000); | |
705 | tzone = &mvm->tz_device; | |
706 | ||
707 | if (!tzone) { | |
708 | ret = -EIO; | |
709 | goto out; | |
710 | } | |
711 | ||
712 | /* no updates*/ | |
713 | if (tzone->temp_trips[trip] == temperature) { | |
714 | ret = 0; | |
715 | goto out; | |
716 | } | |
717 | ||
718 | /* already existing temperature */ | |
719 | for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) { | |
720 | if (tzone->temp_trips[i] == temperature) { | |
721 | ret = -EINVAL; | |
722 | goto out; | |
723 | } | |
724 | } | |
725 | ||
726 | tzone->temp_trips[trip] = temperature; | |
727 | ||
728 | ret = iwl_mvm_send_temp_report_ths_cmd(mvm); | |
729 | out: | |
730 | mutex_unlock(&mvm->mutex); | |
731 | return ret; | |
732 | } | |
733 | ||
734 | static struct thermal_zone_device_ops tzone_ops = { | |
735 | .get_temp = iwl_mvm_tzone_get_temp, | |
736 | .get_trip_temp = iwl_mvm_tzone_get_trip_temp, | |
737 | .get_trip_type = iwl_mvm_tzone_get_trip_type, | |
738 | .set_trip_temp = iwl_mvm_tzone_set_trip_temp, | |
739 | }; | |
740 | ||
741 | /* make all trips writable */ | |
742 | #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1) | |
743 | ||
744 | static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm) | |
745 | { | |
746 | int i; | |
747 | char name[] = "iwlwifi"; | |
748 | ||
749 | if (!iwl_mvm_is_tt_in_fw(mvm)) { | |
750 | mvm->tz_device.tzone = NULL; | |
751 | ||
752 | return; | |
753 | } | |
754 | ||
755 | BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH); | |
756 | ||
757 | mvm->tz_device.tzone = thermal_zone_device_register(name, | |
758 | IWL_MAX_DTS_TRIPS, | |
759 | IWL_WRITABLE_TRIPS_MSK, | |
760 | mvm, &tzone_ops, | |
761 | NULL, 0, 0); | |
762 | if (IS_ERR(mvm->tz_device.tzone)) { | |
763 | IWL_DEBUG_TEMP(mvm, | |
764 | "Failed to register to thermal zone (err = %ld)\n", | |
765 | PTR_ERR(mvm->tz_device.tzone)); | |
91f66a3c | 766 | mvm->tz_device.tzone = NULL; |
c221daf2 CRI |
767 | return; |
768 | } | |
769 | ||
770 | /* 0 is a valid temperature, | |
771 | * so initialize the array with S16_MIN which invalid temperature | |
772 | */ | |
773 | for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++) | |
774 | mvm->tz_device.temp_trips[i] = S16_MIN; | |
775 | } | |
776 | ||
5c89e7bc CRI |
777 | static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev, |
778 | unsigned long *state) | |
779 | { | |
780 | *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1; | |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
785 | static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device *cdev, | |
786 | unsigned long *state) | |
787 | { | |
788 | struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata); | |
789 | ||
5c89e7bc | 790 | *state = mvm->cooling_dev.cur_state; |
b358993b | 791 | |
5c89e7bc CRI |
792 | return 0; |
793 | } | |
794 | ||
795 | static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev, | |
796 | unsigned long new_state) | |
797 | { | |
798 | struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata); | |
799 | int ret; | |
800 | ||
801 | if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) | |
802 | return -EIO; | |
803 | ||
5c89e7bc CRI |
804 | mutex_lock(&mvm->mutex); |
805 | ||
806 | if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) { | |
807 | ret = -EINVAL; | |
808 | goto unlock; | |
809 | } | |
810 | ||
811 | ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START, | |
b358993b | 812 | new_state); |
5c89e7bc CRI |
813 | |
814 | unlock: | |
815 | mutex_unlock(&mvm->mutex); | |
816 | return ret; | |
817 | } | |
818 | ||
819 | static struct thermal_cooling_device_ops tcooling_ops = { | |
820 | .get_max_state = iwl_mvm_tcool_get_max_state, | |
821 | .get_cur_state = iwl_mvm_tcool_get_cur_state, | |
822 | .set_cur_state = iwl_mvm_tcool_set_cur_state, | |
823 | }; | |
824 | ||
91f66a3c | 825 | static void iwl_mvm_cooling_device_register(struct iwl_mvm *mvm) |
5c89e7bc CRI |
826 | { |
827 | char name[] = "iwlwifi"; | |
828 | ||
91f66a3c EG |
829 | if (!iwl_mvm_is_ctdp_supported(mvm)) |
830 | return; | |
5c89e7bc CRI |
831 | |
832 | BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH); | |
833 | ||
834 | mvm->cooling_dev.cdev = | |
835 | thermal_cooling_device_register(name, | |
836 | mvm, | |
837 | &tcooling_ops); | |
838 | ||
839 | if (IS_ERR(mvm->cooling_dev.cdev)) { | |
840 | IWL_DEBUG_TEMP(mvm, | |
841 | "Failed to register to cooling device (err = %ld)\n", | |
842 | PTR_ERR(mvm->cooling_dev.cdev)); | |
91f66a3c EG |
843 | mvm->cooling_dev.cdev = NULL; |
844 | return; | |
5c89e7bc | 845 | } |
5c89e7bc CRI |
846 | } |
847 | ||
c221daf2 CRI |
848 | static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm *mvm) |
849 | { | |
91f66a3c | 850 | if (!iwl_mvm_is_tt_in_fw(mvm) || !mvm->tz_device.tzone) |
c221daf2 CRI |
851 | return; |
852 | ||
91f66a3c EG |
853 | IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n"); |
854 | thermal_zone_device_unregister(mvm->tz_device.tzone); | |
855 | mvm->tz_device.tzone = NULL; | |
c221daf2 | 856 | } |
5c89e7bc CRI |
857 | |
858 | static void iwl_mvm_cooling_device_unregister(struct iwl_mvm *mvm) | |
859 | { | |
91f66a3c | 860 | if (!iwl_mvm_is_ctdp_supported(mvm) || !mvm->cooling_dev.cdev) |
5c89e7bc CRI |
861 | return; |
862 | ||
91f66a3c EG |
863 | IWL_DEBUG_TEMP(mvm, "Cooling device unregister\n"); |
864 | thermal_cooling_device_unregister(mvm->cooling_dev.cdev); | |
865 | mvm->cooling_dev.cdev = NULL; | |
5c89e7bc | 866 | } |
c221daf2 CRI |
867 | #endif /* CONFIG_THERMAL */ |
868 | ||
869 | void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff) | |
9ee718aa EL |
870 | { |
871 | struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle; | |
872 | ||
873 | IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n"); | |
6be497f2 | 874 | |
3444682a CRI |
875 | if (mvm->cfg->thermal_params) |
876 | tt->params = *mvm->cfg->thermal_params; | |
6be497f2 | 877 | else |
3444682a | 878 | tt->params = iwl_mvm_default_tt_params; |
6be497f2 | 879 | |
dafe6c43 | 880 | tt->throttle = false; |
19789abb | 881 | tt->dynamic_smps = false; |
0c0e2c71 | 882 | tt->min_backoff = min_backoff; |
9ee718aa | 883 | INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill); |
c221daf2 CRI |
884 | |
885 | #ifdef CONFIG_THERMAL | |
5c89e7bc | 886 | iwl_mvm_cooling_device_register(mvm); |
c221daf2 CRI |
887 | iwl_mvm_thermal_zone_register(mvm); |
888 | #endif | |
9ee718aa EL |
889 | } |
890 | ||
c221daf2 | 891 | void iwl_mvm_thermal_exit(struct iwl_mvm *mvm) |
9ee718aa EL |
892 | { |
893 | cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit); | |
894 | IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n"); | |
c221daf2 CRI |
895 | |
896 | #ifdef CONFIG_THERMAL | |
5c89e7bc | 897 | iwl_mvm_cooling_device_unregister(mvm); |
c221daf2 CRI |
898 | iwl_mvm_thermal_zone_unregister(mvm); |
899 | #endif | |
9ee718aa | 900 | } |