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iwlwifi: mvm: add debugfs for prph reg read/write
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / debugfs-vif.c
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820a1a50
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.
820a1a50
JB		 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
25 * in the file called COPYING.
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 *
51368bf7 33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
820a1a50
JB		 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#include "mvm.h"
64#include "debugfs.h"
65
e45a941d
AB		 66static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
67 struct ieee80211_vif *vif,
68 enum iwl_dbgfs_pm_mask param, int val)
69{
70 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
71 struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
72
73 dbgfs_pm->mask |= param;
74
75 switch (param) {
76 case MVM_DEBUGFS_PM_KEEP_ALIVE: {
77 struct ieee80211_hw *hw = mvm->hw;
78 int dtimper = hw->conf.ps_dtim_period ?: 1;
79 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
80
81 IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
82 if (val * MSEC_PER_SEC < 3 * dtimper_msec)
83 IWL_WARN(mvm,
84 "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
85 val * MSEC_PER_SEC, 3 * dtimper_msec);
86 dbgfs_pm->keep_alive_seconds = val;
87 break;
88 }
89 case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
90 IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
91 val ? "enabled" : "disabled");
92 dbgfs_pm->skip_over_dtim = val;
93 break;
94 case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
95 IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
96 dbgfs_pm->skip_dtim_periods = val;
97 break;
98 case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
99 IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
100 dbgfs_pm->rx_data_timeout = val;
101 break;
102 case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
103 IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
104 dbgfs_pm->tx_data_timeout = val;
105 break;
106 case MVM_DEBUGFS_PM_DISABLE_POWER_OFF:
107 IWL_DEBUG_POWER(mvm, "disable_power_off=%d\n", val);
108 dbgfs_pm->disable_power_off = val;
109 break;
110 case MVM_DEBUGFS_PM_LPRX_ENA:
111 IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
112 dbgfs_pm->lprx_ena = val;
113 break;
114 case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
115 IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
116 dbgfs_pm->lprx_rssi_threshold = val;
117 break;
118 case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
119 IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
120 dbgfs_pm->snooze_ena = val;
121 break;
122 case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING:
123 IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val);
124 dbgfs_pm->uapsd_misbehaving = val;
125 break;
126 }
127}
128
129static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
130 size_t count, loff_t *ppos)
131{
132 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
133 struct iwl_mvm *mvm = mvmvif->mvm;
134 enum iwl_dbgfs_pm_mask param;
135 int val, ret;
136
137 if (!strncmp("keep_alive=", buf, 11)) {
138 if (sscanf(buf + 11, "%d", &val) != 1)
139 return -EINVAL;
140 param = MVM_DEBUGFS_PM_KEEP_ALIVE;
141 } else if (!strncmp("skip_over_dtim=", buf, 15)) {
142 if (sscanf(buf + 15, "%d", &val) != 1)
143 return -EINVAL;
144 param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
145 } else if (!strncmp("skip_dtim_periods=", buf, 18)) {
146 if (sscanf(buf + 18, "%d", &val) != 1)
147 return -EINVAL;
148 param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
149 } else if (!strncmp("rx_data_timeout=", buf, 16)) {
150 if (sscanf(buf + 16, "%d", &val) != 1)
151 return -EINVAL;
152 param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
153 } else if (!strncmp("tx_data_timeout=", buf, 16)) {
154 if (sscanf(buf + 16, "%d", &val) != 1)
155 return -EINVAL;
156 param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
157 } else if (!strncmp("disable_power_off=", buf, 18) &&
158 !(mvm->fw->ucode_capa.flags &
159 IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)) {
160 if (sscanf(buf + 18, "%d", &val) != 1)
161 return -EINVAL;
162 param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF;
163 } else if (!strncmp("lprx=", buf, 5)) {
164 if (sscanf(buf + 5, "%d", &val) != 1)
165 return -EINVAL;
166 param = MVM_DEBUGFS_PM_LPRX_ENA;
167 } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
168 if (sscanf(buf + 20, "%d", &val) != 1)
169 return -EINVAL;
170 if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
171 POWER_LPRX_RSSI_THRESHOLD_MIN)
172 return -EINVAL;
173 param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
174 } else if (!strncmp("snooze_enable=", buf, 14)) {
175 if (sscanf(buf + 14, "%d", &val) != 1)
176 return -EINVAL;
177 param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
178 } else if (!strncmp("uapsd_misbehaving=", buf, 18)) {
179 if (sscanf(buf + 18, "%d", &val) != 1)
180 return -EINVAL;
181 param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING;
182 } else {
183 return -EINVAL;
184 }
185
186 mutex_lock(&mvm->mutex);
187 iwl_dbgfs_update_pm(mvm, vif, param, val);
e5e7aa8e 188 ret = iwl_mvm_power_update_mac(mvm, vif);
e45a941d
AB		 189 mutex_unlock(&mvm->mutex);
190
191 return ret ?: count;
192}
193
194static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
195 char __user *user_buf,
196 size_t count, loff_t *ppos)
197{
198 struct ieee80211_vif *vif = file->private_data;
199 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
200 struct iwl_mvm *mvm = mvmvif->mvm;
201 char buf[512];
202 int bufsz = sizeof(buf);
203 int pos;
204
c1cb92fc 205 pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz);
e45a941d
AB		 206
207 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
208}
209
820a1a50
JB		 210static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
211 char __user *user_buf,
212 size_t count, loff_t *ppos)
213{
214 struct ieee80211_vif *vif = file->private_data;
215 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
7f09d704 216 struct iwl_mvm *mvm = mvmvif->mvm;
820a1a50
JB		 217 u8 ap_sta_id;
218 struct ieee80211_chanctx_conf *chanctx_conf;
219 char buf[512];
220 int bufsz = sizeof(buf);
221 int pos = 0;
222 int i;
223
224 mutex_lock(&mvm->mutex);
225
226 ap_sta_id = mvmvif->ap_sta_id;
227
2284b951
EG		 228 switch (ieee80211_vif_type_p2p(vif)) {
229 case NL80211_IFTYPE_ADHOC:
230 pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n");
231 break;
232 case NL80211_IFTYPE_STATION:
233 pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n");
234 break;
235 case NL80211_IFTYPE_AP:
236 pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n");
237 break;
238 case NL80211_IFTYPE_P2P_CLIENT:
239 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n");
240 break;
241 case NL80211_IFTYPE_P2P_GO:
242 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n");
243 break;
244 case NL80211_IFTYPE_P2P_DEVICE:
245 pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n");
246 break;
247 default:
248 break;
249 }
250
820a1a50
JB		 251 pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
252 mvmvif->id, mvmvif->color);
253 pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
254 vif->bss_conf.bssid);
255 pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
256 for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++)
257 pos += scnprintf(buf+pos, bufsz-pos,
258 "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
259 i, mvmvif->queue_params[i].txop,
260 mvmvif->queue_params[i].cw_min,
261 mvmvif->queue_params[i].cw_max,
262 mvmvif->queue_params[i].aifs,
263 mvmvif->queue_params[i].uapsd);
264
265 if (vif->type == NL80211_IFTYPE_STATION &&
266 ap_sta_id != IWL_MVM_STATION_COUNT) {
267 struct ieee80211_sta *sta;
820a1a50
JB		 268
269 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
270 lockdep_is_held(&mvm->mutex));
1ddbbb0c
JB		 271 if (!IS_ERR_OR_NULL(sta)) {
272 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
273
274 pos += scnprintf(buf+pos, bufsz-pos,
32a65c34 275 "ap_sta_id %d - reduced Tx power %d force %d\n",
1ddbbb0c 276 ap_sta_id,
32a65c34
EG		 277 mvm_sta->bt_reduced_txpower,
278 mvm_sta->bt_reduced_txpower_dbg);
1ddbbb0c 279 }
820a1a50
JB		 280 }
281
282 rcu_read_lock();
283 chanctx_conf = rcu_dereference(vif->chanctx_conf);
284 if (chanctx_conf)
285 pos += scnprintf(buf+pos, bufsz-pos,
286 "idle rx chains %d, active rx chains: %d\n",
287 chanctx_conf->rx_chains_static,
288 chanctx_conf->rx_chains_dynamic);
289 rcu_read_unlock();
290
291 mutex_unlock(&mvm->mutex);
292
293 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
294}
295
32a65c34
EG		 296static ssize_t iwl_dbgfs_reduced_txp_write(struct ieee80211_vif *vif,
297 char *buf, size_t count,
298 loff_t *ppos)
299{
300 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
301 struct iwl_mvm *mvm = mvmvif->mvm;
302 struct iwl_mvm_sta *mvmsta;
303 bool reduced_tx_power;
304 int ret;
305
306 if (mvmvif->ap_sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))
307 return -ENOTCONN;
308
309 if (strtobool(buf, &reduced_tx_power) != 0)
310 return -EINVAL;
311
312 mutex_lock(&mvm->mutex);
313
314 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
315 mvmsta->bt_reduced_txpower_dbg = false;
316 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
317 reduced_tx_power);
318 if (!ret)
319 mvmsta->bt_reduced_txpower_dbg = true;
320
321 mutex_unlock(&mvm->mutex);
322
323 return ret ? : count;
324}
325
e45a941d
AB		 326static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
327 enum iwl_dbgfs_bf_mask param, int value)
328{
329 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
330 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
331
332 dbgfs_bf->mask |= param;
333
334 switch (param) {
335 case MVM_DEBUGFS_BF_ENERGY_DELTA:
336 dbgfs_bf->bf_energy_delta = value;
337 break;
338 case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
339 dbgfs_bf->bf_roaming_energy_delta = value;
340 break;
341 case MVM_DEBUGFS_BF_ROAMING_STATE:
342 dbgfs_bf->bf_roaming_state = value;
343 break;
344 case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
345 dbgfs_bf->bf_temp_threshold = value;
346 break;
347 case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
348 dbgfs_bf->bf_temp_fast_filter = value;
349 break;
350 case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
351 dbgfs_bf->bf_temp_slow_filter = value;
352 break;
353 case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
354 dbgfs_bf->bf_enable_beacon_filter = value;
355 break;
356 case MVM_DEBUGFS_BF_DEBUG_FLAG:
357 dbgfs_bf->bf_debug_flag = value;
358 break;
359 case MVM_DEBUGFS_BF_ESCAPE_TIMER:
360 dbgfs_bf->bf_escape_timer = value;
361 break;
362 case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
363 dbgfs_bf->ba_enable_beacon_abort = value;
364 break;
365 case MVM_DEBUGFS_BA_ESCAPE_TIMER:
366 dbgfs_bf->ba_escape_timer = value;
367 break;
368 }
369}
370
371static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf,
372 size_t count, loff_t *ppos)
373{
374 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
375 struct iwl_mvm *mvm = mvmvif->mvm;
376 enum iwl_dbgfs_bf_mask param;
377 int value, ret = 0;
378
379 if (!strncmp("bf_energy_delta=", buf, 16)) {
380 if (sscanf(buf+16, "%d", &value) != 1)
381 return -EINVAL;
382 if (value < IWL_BF_ENERGY_DELTA_MIN ||
383 value > IWL_BF_ENERGY_DELTA_MAX)
384 return -EINVAL;
385 param = MVM_DEBUGFS_BF_ENERGY_DELTA;
386 } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
387 if (sscanf(buf+24, "%d", &value) != 1)
388 return -EINVAL;
389 if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
390 value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
391 return -EINVAL;
392 param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
393 } else if (!strncmp("bf_roaming_state=", buf, 17)) {
394 if (sscanf(buf+17, "%d", &value) != 1)
395 return -EINVAL;
396 if (value < IWL_BF_ROAMING_STATE_MIN ||
397 value > IWL_BF_ROAMING_STATE_MAX)
398 return -EINVAL;
399 param = MVM_DEBUGFS_BF_ROAMING_STATE;
400 } else if (!strncmp("bf_temp_threshold=", buf, 18)) {
401 if (sscanf(buf+18, "%d", &value) != 1)
402 return -EINVAL;
403 if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
404 value > IWL_BF_TEMP_THRESHOLD_MAX)
405 return -EINVAL;
406 param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
407 } else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
408 if (sscanf(buf+20, "%d", &value) != 1)
409 return -EINVAL;
410 if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
411 value > IWL_BF_TEMP_FAST_FILTER_MAX)
412 return -EINVAL;
413 param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
414 } else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
415 if (sscanf(buf+20, "%d", &value) != 1)
416 return -EINVAL;
417 if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
418 value > IWL_BF_TEMP_SLOW_FILTER_MAX)
419 return -EINVAL;
420 param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
421 } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
422 if (sscanf(buf+24, "%d", &value) != 1)
423 return -EINVAL;
424 if (value < 0 || value > 1)
425 return -EINVAL;
426 param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
427 } else if (!strncmp("bf_debug_flag=", buf, 14)) {
428 if (sscanf(buf+14, "%d", &value) != 1)
429 return -EINVAL;
430 if (value < 0 || value > 1)
431 return -EINVAL;
432 param = MVM_DEBUGFS_BF_DEBUG_FLAG;
433 } else if (!strncmp("bf_escape_timer=", buf, 16)) {
434 if (sscanf(buf+16, "%d", &value) != 1)
435 return -EINVAL;
436 if (value < IWL_BF_ESCAPE_TIMER_MIN ||
437 value > IWL_BF_ESCAPE_TIMER_MAX)
438 return -EINVAL;
439 param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
440 } else if (!strncmp("ba_escape_timer=", buf, 16)) {
441 if (sscanf(buf+16, "%d", &value) != 1)
442 return -EINVAL;
443 if (value < IWL_BA_ESCAPE_TIMER_MIN ||
444 value > IWL_BA_ESCAPE_TIMER_MAX)
445 return -EINVAL;
446 param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
447 } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
448 if (sscanf(buf+23, "%d", &value) != 1)
449 return -EINVAL;
450 if (value < 0 || value > 1)
451 return -EINVAL;
452 param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
453 } else {
454 return -EINVAL;
455 }
456
457 mutex_lock(&mvm->mutex);
458 iwl_dbgfs_update_bf(vif, param, value);
459 if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value)
3dd37d05 460 ret = iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
e45a941d 461 else
3dd37d05 462 ret = iwl_mvm_enable_beacon_filter(mvm, vif, CMD_SYNC);
e45a941d
AB		 463 mutex_unlock(&mvm->mutex);
464
465 return ret ?: count;
466}
467
468static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
469 char __user *user_buf,
470 size_t count, loff_t *ppos)
471{
472 struct ieee80211_vif *vif = file->private_data;
473 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
474 char buf[256];
475 int pos = 0;
476 const size_t bufsz = sizeof(buf);
477 struct iwl_beacon_filter_cmd cmd = {
478 IWL_BF_CMD_CONFIG_DEFAULTS,
479 .bf_enable_beacon_filter =
480 cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
481 .ba_enable_beacon_abort =
482 cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
483 };
484
485 iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
486 if (mvmvif->bf_data.bf_enabled)
487 cmd.bf_enable_beacon_filter = cpu_to_le32(1);
488 else
489 cmd.bf_enable_beacon_filter = 0;
490
491 pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
492 le32_to_cpu(cmd.bf_energy_delta));
493 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
494 le32_to_cpu(cmd.bf_roaming_energy_delta));
495 pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
496 le32_to_cpu(cmd.bf_roaming_state));
497 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
498 le32_to_cpu(cmd.bf_temp_threshold));
499 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
500 le32_to_cpu(cmd.bf_temp_fast_filter));
501 pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
502 le32_to_cpu(cmd.bf_temp_slow_filter));
503 pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
504 le32_to_cpu(cmd.bf_enable_beacon_filter));
505 pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
506 le32_to_cpu(cmd.bf_debug_flag));
507 pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
508 le32_to_cpu(cmd.bf_escape_timer));
509 pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
510 le32_to_cpu(cmd.ba_escape_timer));
511 pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
512 le32_to_cpu(cmd.ba_enable_beacon_abort));
513
514 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
515}
516
a21d7bcb
JB		 517static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
518 size_t count, loff_t *ppos)
519{
520 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
521 struct iwl_mvm *mvm = mvmvif->mvm;
522 u8 value;
523 int ret;
524
525 ret = kstrtou8(buf, 0, &value);
526 if (ret)
527 return ret;
528 if (value > 1)
529 return -EINVAL;
530
531 mutex_lock(&mvm->mutex);
532 iwl_mvm_update_low_latency(mvm, vif, value);
533 mutex_unlock(&mvm->mutex);
534
535 return count;
536}
537
538static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
539 char __user *user_buf,
540 size_t count, loff_t *ppos)
541{
542 struct ieee80211_vif *vif = file->private_data;
543 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
544 char buf[3];
545
546 buf[0] = mvmvif->low_latency ? '1' : '0';
547 buf[1] = '\n';
548 buf[2] = '\0';
549 return simple_read_from_buffer(user_buf, count, ppos, buf, sizeof(buf));
550}
551
e45a941d
AB		 552#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
553 _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
554#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
555 _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
820a1a50
JB		 556#define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
557 if (!debugfs_create_file(#name, mode, parent, vif, \
558 &iwl_dbgfs_##name##_ops)) \
559 goto err; \
560 } while (0)
561
562MVM_DEBUGFS_READ_FILE_OPS(mac_params);
e45a941d
AB		 563MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
564MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
a21d7bcb 565MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
32a65c34 566MVM_DEBUGFS_WRITE_FILE_OPS(reduced_txp, 10);
820a1a50
JB		 567
568void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
569{
570 struct dentry *dbgfs_dir = vif->debugfs_dir;
571 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
572 char buf[100];
573
574 /*
575 * Check if debugfs directory already exist before creating it.
576 * This may happen when, for example, resetting hw or suspend-resume
577 */
578 if (!dbgfs_dir || mvmvif->dbgfs_dir)
579 return;
580
581 mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
7f09d704 582 mvmvif->mvm = mvm;
820a1a50
JB		 583
584 if (!mvmvif->dbgfs_dir) {
585 IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
586 dbgfs_dir->d_name.name);
587 return;
588 }
589
c1cb92fc
EG		 590 if ((mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT) &&
591 iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
e45a941d
AB		 592 ((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
593 (vif->type == NL80211_IFTYPE_STATION && vif->p2p &&
594 mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PS)))
595 MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
596 S_IRUSR);
597
32a65c34
EG		 598 MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, S_IRUSR);
599 MVM_DEBUGFS_ADD_FILE_VIF(reduced_txp, mvmvif->dbgfs_dir, S_IWUSR);
a21d7bcb
JB		 600 MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir,
601 S_IRUSR | S_IWUSR);
820a1a50 602
e45a941d
AB		 603 if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
604 mvmvif == mvm->bf_allowed_vif)
605 MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir,
606 S_IRUSR | S_IWUSR);
607
820a1a50
JB		 608 /*
609 * Create symlink for convenience pointing to interface specific
610 * debugfs entries for the driver. For example, under
611 * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
612 * find
613 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
614 */
615 snprintf(buf, 100, "../../../%s/%s/%s/%s",
616 dbgfs_dir->d_parent->d_parent->d_name.name,
617 dbgfs_dir->d_parent->d_name.name,
618 dbgfs_dir->d_name.name,
619 mvmvif->dbgfs_dir->d_name.name);
620
621 mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
622 mvm->debugfs_dir, buf);
623 if (!mvmvif->dbgfs_slink)
624 IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
625 dbgfs_dir->d_name.name);
626 return;
627err:
628 IWL_ERR(mvm, "Can't create debugfs entity\n");
629}
630
631void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
632{
633 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
634
635 debugfs_remove(mvmvif->dbgfs_slink);
636 mvmvif->dbgfs_slink = NULL;
637
638 debugfs_remove_recursive(mvmvif->dbgfs_dir);
639 mvmvif->dbgfs_dir = NULL;
640}
Linux kernel - Deliverables
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