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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 | * | |
8 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of version 2 of the GNU General Public License as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
22 | * USA | |
23 | * | |
24 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 25 | * in the file called COPYING. |
8ca151b5 JB |
26 | * |
27 | * Contact Information: | |
28 | * Intel Linux Wireless <ilw@linux.intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
33 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
34 | * All rights reserved. | |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | * | |
62 | *****************************************************************************/ | |
63 | ||
64 | #include <linux/jiffies.h> | |
65 | #include <net/mac80211.h> | |
66 | ||
67 | #include "iwl-notif-wait.h" | |
68 | #include "iwl-trans.h" | |
69 | #include "fw-api.h" | |
70 | #include "time-event.h" | |
71 | #include "mvm.h" | |
72 | #include "iwl-io.h" | |
73 | #include "iwl-prph.h" | |
74 | ||
75 | /* A TimeUnit is 1024 microsecond */ | |
76 | #define TU_TO_JIFFIES(_tu) (usecs_to_jiffies((_tu) * 1024)) | |
77 | #define MSEC_TO_TU(_msec) (_msec*1000/1024) | |
78 | ||
e635c797 IP |
79 | /* |
80 | * For the high priority TE use a time event type that has similar priority to | |
81 | * the FW's action scan priority. | |
456f6ddf | 82 | */ |
e635c797 IP |
83 | #define IWL_MVM_ROC_TE_TYPE_NORMAL TE_P2P_DEVICE_DISCOVERABLE |
84 | #define IWL_MVM_ROC_TE_TYPE_MGMT_TX TE_P2P_CLIENT_ASSOC | |
456f6ddf | 85 | |
8ca151b5 JB |
86 | void iwl_mvm_te_clear_data(struct iwl_mvm *mvm, |
87 | struct iwl_mvm_time_event_data *te_data) | |
88 | { | |
89 | lockdep_assert_held(&mvm->time_event_lock); | |
90 | ||
91 | if (te_data->id == TE_MAX) | |
92 | return; | |
93 | ||
94 | list_del(&te_data->list); | |
95 | te_data->running = false; | |
96 | te_data->uid = 0; | |
97 | te_data->id = TE_MAX; | |
98 | te_data->vif = NULL; | |
99 | } | |
100 | ||
101 | void iwl_mvm_roc_done_wk(struct work_struct *wk) | |
102 | { | |
103 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, roc_done_wk); | |
104 | ||
105 | synchronize_net(); | |
106 | ||
107 | /* | |
108 | * Flush the offchannel queue -- this is called when the time | |
109 | * event finishes or is cancelled, so that frames queued for it | |
110 | * won't get stuck on the queue and be transmitted in the next | |
111 | * time event. | |
112 | * We have to send the command asynchronously since this cannot | |
113 | * be under the mutex for locking reasons, but that's not an | |
114 | * issue as it will have to complete before the next command is | |
115 | * executed, and a new time event means a new command. | |
116 | */ | |
398e8c6c | 117 | iwl_mvm_flush_tx_path(mvm, BIT(IWL_MVM_OFFCHANNEL_QUEUE), false); |
8ca151b5 JB |
118 | } |
119 | ||
120 | static void iwl_mvm_roc_finished(struct iwl_mvm *mvm) | |
121 | { | |
122 | /* | |
123 | * First, clear the ROC_RUNNING status bit. This will cause the TX | |
124 | * path to drop offchannel transmissions. That would also be done | |
125 | * by mac80211, but it is racy, in particular in the case that the | |
126 | * time event actually completed in the firmware (which is handled | |
127 | * in iwl_mvm_te_handle_notif). | |
128 | */ | |
129 | clear_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status); | |
130 | ||
131 | /* | |
132 | * Of course, our status bit is just as racy as mac80211, so in | |
133 | * addition, fire off the work struct which will drop all frames | |
134 | * from the hardware queues that made it through the race. First | |
135 | * it will of course synchronize the TX path to make sure that | |
136 | * any *new* TX will be rejected. | |
137 | */ | |
138 | schedule_work(&mvm->roc_done_wk); | |
139 | } | |
140 | ||
141 | /* | |
142 | * Handles a FW notification for an event that is known to the driver. | |
143 | * | |
144 | * @mvm: the mvm component | |
145 | * @te_data: the time event data | |
146 | * @notif: the notification data corresponding the time event data. | |
147 | */ | |
148 | static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm, | |
149 | struct iwl_mvm_time_event_data *te_data, | |
150 | struct iwl_time_event_notif *notif) | |
151 | { | |
152 | lockdep_assert_held(&mvm->time_event_lock); | |
153 | ||
154 | IWL_DEBUG_TE(mvm, "Handle time event notif - UID = 0x%x action %d\n", | |
155 | le32_to_cpu(notif->unique_id), | |
156 | le32_to_cpu(notif->action)); | |
157 | ||
158 | /* | |
159 | * The FW sends the start/end time event notifications even for events | |
160 | * that it fails to schedule. This is indicated in the status field of | |
161 | * the notification. This happens in cases that the scheduler cannot | |
162 | * find a schedule that can handle the event (for example requesting a | |
163 | * P2P Device discoveribility, while there are other higher priority | |
164 | * events in the system). | |
165 | */ | |
166 | WARN_ONCE(!le32_to_cpu(notif->status), | |
167 | "Failed to schedule time event\n"); | |
168 | ||
1da80e80 | 169 | if (le32_to_cpu(notif->action) & TE_NOTIF_HOST_EVENT_END) { |
8ca151b5 JB |
170 | IWL_DEBUG_TE(mvm, |
171 | "TE ended - current time %lu, estimated end %lu\n", | |
172 | jiffies, te_data->end_jiffies); | |
173 | ||
174 | if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
175 | ieee80211_remain_on_channel_expired(mvm->hw); | |
176 | iwl_mvm_roc_finished(mvm); | |
177 | } | |
178 | ||
179 | /* | |
180 | * By now, we should have finished association | |
181 | * and know the dtim period. | |
182 | */ | |
183 | if (te_data->vif->type == NL80211_IFTYPE_STATION && | |
184 | (!te_data->vif->bss_conf.assoc || | |
210a544e | 185 | !te_data->vif->bss_conf.dtim_period)) { |
8ca151b5 JB |
186 | IWL_ERR(mvm, |
187 | "No assocation and the time event is over already...\n"); | |
210a544e JB |
188 | ieee80211_connection_loss(te_data->vif); |
189 | } | |
8ca151b5 JB |
190 | |
191 | iwl_mvm_te_clear_data(mvm, te_data); | |
1da80e80 | 192 | } else if (le32_to_cpu(notif->action) & TE_NOTIF_HOST_EVENT_START) { |
8ca151b5 JB |
193 | te_data->running = true; |
194 | te_data->end_jiffies = jiffies + | |
195 | TU_TO_JIFFIES(te_data->duration); | |
196 | ||
197 | if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
198 | set_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status); | |
199 | ieee80211_ready_on_channel(mvm->hw); | |
200 | } | |
201 | } else { | |
202 | IWL_WARN(mvm, "Got TE with unknown action\n"); | |
203 | } | |
204 | } | |
205 | ||
206 | /* | |
207 | * The Rx handler for time event notifications | |
208 | */ | |
209 | int iwl_mvm_rx_time_event_notif(struct iwl_mvm *mvm, | |
210 | struct iwl_rx_cmd_buffer *rxb, | |
211 | struct iwl_device_cmd *cmd) | |
212 | { | |
213 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
214 | struct iwl_time_event_notif *notif = (void *)pkt->data; | |
215 | struct iwl_mvm_time_event_data *te_data, *tmp; | |
216 | ||
217 | IWL_DEBUG_TE(mvm, "Time event notification - UID = 0x%x action %d\n", | |
218 | le32_to_cpu(notif->unique_id), | |
219 | le32_to_cpu(notif->action)); | |
220 | ||
221 | spin_lock_bh(&mvm->time_event_lock); | |
222 | list_for_each_entry_safe(te_data, tmp, &mvm->time_event_list, list) { | |
223 | if (le32_to_cpu(notif->unique_id) == te_data->uid) | |
224 | iwl_mvm_te_handle_notif(mvm, te_data, notif); | |
225 | } | |
226 | spin_unlock_bh(&mvm->time_event_lock); | |
227 | ||
228 | return 0; | |
229 | } | |
230 | ||
ffdf968d JB |
231 | static bool iwl_mvm_time_event_response(struct iwl_notif_wait_data *notif_wait, |
232 | struct iwl_rx_packet *pkt, void *data) | |
8ca151b5 JB |
233 | { |
234 | struct iwl_mvm *mvm = | |
235 | container_of(notif_wait, struct iwl_mvm, notif_wait); | |
236 | struct iwl_mvm_time_event_data *te_data = data; | |
8ca151b5 | 237 | struct iwl_time_event_resp *resp; |
ffdf968d | 238 | int resp_len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; |
8ca151b5 | 239 | |
ffdf968d JB |
240 | if (WARN_ON(pkt->hdr.cmd != TIME_EVENT_CMD)) |
241 | return true; | |
8ca151b5 | 242 | |
ffdf968d JB |
243 | if (WARN_ON_ONCE(resp_len != sizeof(pkt->hdr) + sizeof(*resp))) { |
244 | IWL_ERR(mvm, "Invalid TIME_EVENT_CMD response\n"); | |
245 | return true; | |
246 | } | |
8ca151b5 | 247 | |
ffdf968d | 248 | resp = (void *)pkt->data; |
e3722822 JB |
249 | |
250 | /* we should never get a response to another TIME_EVENT_CMD here */ | |
251 | if (WARN_ON_ONCE(le32_to_cpu(resp->id) != te_data->id)) | |
252 | return false; | |
253 | ||
ffdf968d JB |
254 | te_data->uid = le32_to_cpu(resp->unique_id); |
255 | IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", | |
256 | te_data->uid); | |
257 | return true; | |
258 | } | |
8ca151b5 | 259 | |
ffdf968d JB |
260 | static int iwl_mvm_time_event_send_add(struct iwl_mvm *mvm, |
261 | struct ieee80211_vif *vif, | |
262 | struct iwl_mvm_time_event_data *te_data, | |
263 | struct iwl_time_event_cmd *te_cmd) | |
264 | { | |
265 | static const u8 time_event_response[] = { TIME_EVENT_CMD }; | |
266 | struct iwl_notification_wait wait_time_event; | |
267 | int ret; | |
268 | ||
269 | lockdep_assert_held(&mvm->mutex); | |
270 | ||
93630dc3 JB |
271 | IWL_DEBUG_TE(mvm, "Add new TE, duration %d TU\n", |
272 | le32_to_cpu(te_cmd->duration)); | |
273 | ||
ffdf968d JB |
274 | spin_lock_bh(&mvm->time_event_lock); |
275 | if (WARN_ON(te_data->id != TE_MAX)) { | |
276 | spin_unlock_bh(&mvm->time_event_lock); | |
277 | return -EIO; | |
278 | } | |
279 | te_data->vif = vif; | |
280 | te_data->duration = le32_to_cpu(te_cmd->duration); | |
281 | te_data->id = le32_to_cpu(te_cmd->id); | |
282 | list_add_tail(&te_data->list, &mvm->time_event_list); | |
283 | spin_unlock_bh(&mvm->time_event_lock); | |
284 | ||
285 | /* | |
286 | * Use a notification wait, which really just processes the | |
287 | * command response and doesn't wait for anything, in order | |
288 | * to be able to process the response and get the UID inside | |
289 | * the RX path. Using CMD_WANT_SKB doesn't work because it | |
290 | * stores the buffer and then wakes up this thread, by which | |
291 | * time another notification (that the time event started) | |
292 | * might already be processed unsuccessfully. | |
293 | */ | |
294 | iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, | |
295 | time_event_response, | |
296 | ARRAY_SIZE(time_event_response), | |
297 | iwl_mvm_time_event_response, te_data); | |
298 | ||
299 | ret = iwl_mvm_send_cmd_pdu(mvm, TIME_EVENT_CMD, CMD_SYNC, | |
300 | sizeof(*te_cmd), te_cmd); | |
301 | if (ret) { | |
302 | IWL_ERR(mvm, "Couldn't send TIME_EVENT_CMD: %d\n", ret); | |
303 | iwl_remove_notification(&mvm->notif_wait, &wait_time_event); | |
304 | goto out_clear_te; | |
305 | } | |
8ca151b5 | 306 | |
ffdf968d JB |
307 | /* No need to wait for anything, so just pass 1 (0 isn't valid) */ |
308 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); | |
309 | /* should never fail */ | |
310 | WARN_ON_ONCE(ret); | |
311 | ||
312 | if (ret) { | |
313 | out_clear_te: | |
314 | spin_lock_bh(&mvm->time_event_lock); | |
315 | iwl_mvm_te_clear_data(mvm, te_data); | |
316 | spin_unlock_bh(&mvm->time_event_lock); | |
317 | } | |
318 | return ret; | |
8ca151b5 JB |
319 | } |
320 | ||
321 | void iwl_mvm_protect_session(struct iwl_mvm *mvm, | |
322 | struct ieee80211_vif *vif, | |
323 | u32 duration, u32 min_duration) | |
324 | { | |
325 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
326 | struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data; | |
8ca151b5 | 327 | struct iwl_time_event_cmd time_cmd = {}; |
8ca151b5 JB |
328 | |
329 | lockdep_assert_held(&mvm->mutex); | |
330 | ||
331 | if (te_data->running && | |
332 | time_after(te_data->end_jiffies, | |
333 | jiffies + TU_TO_JIFFIES(min_duration))) { | |
334 | IWL_DEBUG_TE(mvm, "We have enough time in the current TE: %u\n", | |
335 | jiffies_to_msecs(te_data->end_jiffies - jiffies)); | |
336 | return; | |
337 | } | |
338 | ||
339 | if (te_data->running) { | |
340 | IWL_DEBUG_TE(mvm, "extend 0x%x: only %u ms left\n", | |
341 | te_data->uid, | |
342 | jiffies_to_msecs(te_data->end_jiffies - jiffies)); | |
343 | /* | |
344 | * we don't have enough time | |
345 | * cancel the current TE and issue a new one | |
346 | * Of course it would be better to remove the old one only | |
347 | * when the new one is added, but we don't care if we are off | |
348 | * channel for a bit. All we need to do, is not to return | |
349 | * before we actually begin to be on the channel. | |
350 | */ | |
351 | iwl_mvm_stop_session_protection(mvm, vif); | |
352 | } | |
353 | ||
8ca151b5 JB |
354 | time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); |
355 | time_cmd.id_and_color = | |
356 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)); | |
357 | time_cmd.id = cpu_to_le32(TE_BSS_STA_AGGRESSIVE_ASSOC); | |
358 | ||
359 | time_cmd.apply_time = | |
360 | cpu_to_le32(iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG)); | |
ffdf968d | 361 | |
8ca151b5 JB |
362 | time_cmd.dep_policy = TE_INDEPENDENT; |
363 | time_cmd.is_present = cpu_to_le32(1); | |
364 | time_cmd.max_frags = cpu_to_le32(TE_FRAG_NONE); | |
365 | time_cmd.max_delay = cpu_to_le32(500); | |
366 | /* TODO: why do we need to interval = bi if it is not periodic? */ | |
367 | time_cmd.interval = cpu_to_le32(1); | |
368 | time_cmd.interval_reciprocal = cpu_to_le32(iwl_mvm_reciprocal(1)); | |
369 | time_cmd.duration = cpu_to_le32(duration); | |
370 | time_cmd.repeat = cpu_to_le32(1); | |
1da80e80 IP |
371 | time_cmd.notify = cpu_to_le32(TE_NOTIF_HOST_EVENT_START | |
372 | TE_NOTIF_HOST_EVENT_END); | |
8ca151b5 | 373 | |
ffdf968d | 374 | iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd); |
8ca151b5 JB |
375 | } |
376 | ||
377 | /* | |
378 | * Explicit request to remove a time event. The removal of a time event needs to | |
379 | * be synchronized with the flow of a time event's end notification, which also | |
380 | * removes the time event from the op mode data structures. | |
381 | */ | |
382 | void iwl_mvm_remove_time_event(struct iwl_mvm *mvm, | |
383 | struct iwl_mvm_vif *mvmvif, | |
384 | struct iwl_mvm_time_event_data *te_data) | |
385 | { | |
386 | struct iwl_time_event_cmd time_cmd = {}; | |
387 | u32 id, uid; | |
388 | int ret; | |
389 | ||
390 | /* | |
391 | * It is possible that by the time we got to this point the time | |
392 | * event was already removed. | |
393 | */ | |
394 | spin_lock_bh(&mvm->time_event_lock); | |
395 | ||
396 | /* Save time event uid before clearing its data */ | |
397 | uid = te_data->uid; | |
398 | id = te_data->id; | |
399 | ||
400 | /* | |
401 | * The clear_data function handles time events that were already removed | |
402 | */ | |
403 | iwl_mvm_te_clear_data(mvm, te_data); | |
404 | spin_unlock_bh(&mvm->time_event_lock); | |
405 | ||
406 | /* | |
407 | * It is possible that by the time we try to remove it, the time event | |
408 | * has already ended and removed. In such a case there is no need to | |
409 | * send a removal command. | |
410 | */ | |
411 | if (id == TE_MAX) { | |
412 | IWL_DEBUG_TE(mvm, "TE 0x%x has already ended\n", uid); | |
413 | return; | |
414 | } | |
415 | ||
416 | /* When we remove a TE, the UID is to be set in the id field */ | |
417 | time_cmd.id = cpu_to_le32(uid); | |
418 | time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); | |
419 | time_cmd.id_and_color = | |
420 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)); | |
421 | ||
422 | IWL_DEBUG_TE(mvm, "Removing TE 0x%x\n", le32_to_cpu(time_cmd.id)); | |
e3722822 | 423 | ret = iwl_mvm_send_cmd_pdu(mvm, TIME_EVENT_CMD, CMD_SYNC, |
8ca151b5 JB |
424 | sizeof(time_cmd), &time_cmd); |
425 | if (WARN_ON(ret)) | |
426 | return; | |
427 | } | |
428 | ||
429 | void iwl_mvm_stop_session_protection(struct iwl_mvm *mvm, | |
430 | struct ieee80211_vif *vif) | |
431 | { | |
432 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
433 | struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data; | |
434 | ||
435 | lockdep_assert_held(&mvm->mutex); | |
436 | iwl_mvm_remove_time_event(mvm, mvmvif, te_data); | |
437 | } | |
438 | ||
8ca151b5 | 439 | int iwl_mvm_start_p2p_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
e635c797 | 440 | int duration, enum ieee80211_roc_type type) |
8ca151b5 JB |
441 | { |
442 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
443 | struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data; | |
8ca151b5 | 444 | struct iwl_time_event_cmd time_cmd = {}; |
8ca151b5 JB |
445 | |
446 | lockdep_assert_held(&mvm->mutex); | |
447 | if (te_data->running) { | |
448 | IWL_WARN(mvm, "P2P_DEVICE remain on channel already running\n"); | |
449 | return -EBUSY; | |
450 | } | |
451 | ||
452 | /* | |
453 | * Flush the done work, just in case it's still pending, so that | |
454 | * the work it does can complete and we can accept new frames. | |
455 | */ | |
456 | flush_work(&mvm->roc_done_wk); | |
457 | ||
8ca151b5 JB |
458 | time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); |
459 | time_cmd.id_and_color = | |
460 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)); | |
e635c797 IP |
461 | |
462 | switch (type) { | |
463 | case IEEE80211_ROC_TYPE_NORMAL: | |
464 | time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE_NORMAL); | |
465 | break; | |
466 | case IEEE80211_ROC_TYPE_MGMT_TX: | |
467 | time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE_MGMT_TX); | |
468 | break; | |
469 | default: | |
470 | WARN_ONCE(1, "Got an invalid ROC type\n"); | |
471 | return -EINVAL; | |
472 | } | |
8ca151b5 JB |
473 | |
474 | time_cmd.apply_time = cpu_to_le32(0); | |
475 | time_cmd.dep_policy = cpu_to_le32(TE_INDEPENDENT); | |
476 | time_cmd.is_present = cpu_to_le32(1); | |
8ca151b5 JB |
477 | time_cmd.interval = cpu_to_le32(1); |
478 | ||
479 | /* | |
e635c797 | 480 | * The P2P Device TEs can have lower priority than other events |
8ca151b5 | 481 | * that are being scheduled by the driver/fw, and thus it might not be |
e635c797 IP |
482 | * scheduled. To improve the chances of it being scheduled, allow them |
483 | * to be fragmented, and in addition allow them to be delayed. | |
8ca151b5 JB |
484 | */ |
485 | time_cmd.max_frags = cpu_to_le32(MSEC_TO_TU(duration)/20); | |
486 | time_cmd.max_delay = cpu_to_le32(MSEC_TO_TU(duration/2)); | |
487 | time_cmd.duration = cpu_to_le32(MSEC_TO_TU(duration)); | |
488 | time_cmd.repeat = cpu_to_le32(1); | |
1da80e80 IP |
489 | time_cmd.notify = cpu_to_le32(TE_NOTIF_HOST_EVENT_START | |
490 | TE_NOTIF_HOST_EVENT_END); | |
8ca151b5 | 491 | |
ffdf968d | 492 | return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd); |
8ca151b5 JB |
493 | } |
494 | ||
495 | void iwl_mvm_stop_p2p_roc(struct iwl_mvm *mvm) | |
496 | { | |
497 | struct iwl_mvm_vif *mvmvif; | |
498 | struct iwl_mvm_time_event_data *te_data; | |
499 | ||
500 | lockdep_assert_held(&mvm->mutex); | |
501 | ||
502 | /* | |
503 | * Iterate over the list of time events and find the time event that is | |
504 | * associated with a P2P_DEVICE interface. | |
505 | * This assumes that a P2P_DEVICE interface can have only a single time | |
506 | * event at any given time and this time event coresponds to a ROC | |
507 | * request | |
508 | */ | |
509 | mvmvif = NULL; | |
510 | spin_lock_bh(&mvm->time_event_lock); | |
511 | list_for_each_entry(te_data, &mvm->time_event_list, list) { | |
512 | if (te_data->vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
513 | mvmvif = iwl_mvm_vif_from_mac80211(te_data->vif); | |
514 | break; | |
515 | } | |
516 | } | |
517 | spin_unlock_bh(&mvm->time_event_lock); | |
518 | ||
519 | if (!mvmvif) { | |
520 | IWL_WARN(mvm, "P2P_DEVICE no remain on channel event\n"); | |
521 | return; | |
522 | } | |
523 | ||
524 | iwl_mvm_remove_time_event(mvm, mvmvif, te_data); | |
525 | ||
526 | iwl_mvm_roc_finished(mvm); | |
527 | } |