drivers/net/wireless/intel/iwlwifi/fw/dbg.h

   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) 2008 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018        Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * The full GNU General Public License is included in this distribution
  23  * in the file called COPYING.
  24  *
  25  * Contact Information:
  26  *  Intel Linux Wireless <linuxwifi@intel.com>
  27  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  28  *
  29  * BSD LICENSE
  30  *
  31  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33  * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018        Intel Corporation
  35  * All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  *
  41  *  * Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  *  * Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in
  45  *    the documentation and/or other materials provided with the
  46  *    distribution.
  47  *  * Neither the name Intel Corporation nor the names of its
  48  *    contributors may be used to endorse or promote products derived
  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  56  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  57  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  58  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  59  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *
  63  *****************************************************************************/
  64
  65 #ifndef __iwl_fw_dbg_h__
  66 #define __iwl_fw_dbg_h__
  67 #include <linux/workqueue.h>
  68 #include <net/cfg80211.h>
  69 #include "runtime.h"
  70 #include "iwl-prph.h"
  71 #include "iwl-io.h"
  72 #include "file.h"
  73 #include "error-dump.h"
  74 #include "api/commands.h"
  75
  76 /**
  77  * struct iwl_fw_dump_desc - describes the dump
  78  * @len: length of trig_desc->data
  79  * @trig_desc: the description of the dump
  80  */
  81 struct iwl_fw_dump_desc {
  82         size_t len;
  83         /* must be last */
  84         struct iwl_fw_error_dump_trigger_desc trig_desc;
  85 };
  86
  87 /**
  88  * struct iwl_fw_dbg_params - register values to restore
  89  * @in_sample: DBGC_IN_SAMPLE value
  90  * @out_ctrl: DBGC_OUT_CTRL value
  91  */
  92 struct iwl_fw_dbg_params {
  93         u32 in_sample;
  94         u32 out_ctrl;
  95 };
  96
  97 extern const struct iwl_fw_dump_desc iwl_dump_desc_assert;
  98
  99 static inline void iwl_fw_free_dump_desc(struct iwl_fw_runtime *fwrt)
 100 {
 101         if (fwrt->dump.desc != &iwl_dump_desc_assert)
 102                 kfree(fwrt->dump.desc);
 103         fwrt->dump.desc = NULL;
 104         fwrt->dump.trig = NULL;
 105 }
 106
 107 void iwl_fw_error_dump(struct iwl_fw_runtime *fwrt);
 108 int iwl_fw_dbg_collect_desc(struct iwl_fw_runtime *fwrt,
 109                             const struct iwl_fw_dump_desc *desc,
 110                             const struct iwl_fw_dbg_trigger_tlv *trigger);
 111 int iwl_fw_dbg_collect(struct iwl_fw_runtime *fwrt,
 112                        enum iwl_fw_dbg_trigger trig,
 113                        const char *str, size_t len,
 114                        const struct iwl_fw_dbg_trigger_tlv *trigger);
 115 int iwl_fw_dbg_collect_trig(struct iwl_fw_runtime *fwrt,
 116                             struct iwl_fw_dbg_trigger_tlv *trigger,
 117                             const char *fmt, ...) __printf(3, 4);
 118 int iwl_fw_start_dbg_conf(struct iwl_fw_runtime *fwrt, u8 id);
 119
 120 #define iwl_fw_dbg_trigger_enabled(fw, id) ({                   \
 121         void *__dbg_trigger = (fw)->dbg_trigger_tlv[(id)];      \
 122         unlikely(__dbg_trigger);                                \
 123 })
 124
 125 static inline struct iwl_fw_dbg_trigger_tlv*
 126 _iwl_fw_dbg_get_trigger(const struct iwl_fw *fw, enum iwl_fw_dbg_trigger id)
 127 {
 128         return fw->dbg_trigger_tlv[id];
 129 }
 130
 131 #define iwl_fw_dbg_get_trigger(fw, id) ({                       \
 132         BUILD_BUG_ON(!__builtin_constant_p(id));                \
 133         BUILD_BUG_ON((id) >= FW_DBG_TRIGGER_MAX);               \
 134         _iwl_fw_dbg_get_trigger((fw), (id));                    \
 135 })
 136
 137 static inline bool
 138 iwl_fw_dbg_trigger_vif_match(struct iwl_fw_dbg_trigger_tlv *trig,
 139                              struct wireless_dev *wdev)
 140 {
 141         u32 trig_vif = le32_to_cpu(trig->vif_type);
 142
 143         return trig_vif == IWL_FW_DBG_CONF_VIF_ANY ||
 144                wdev->iftype == trig_vif;
 145 }
 146
 147 static inline bool
 148 iwl_fw_dbg_trigger_stop_conf_match(struct iwl_fw_runtime *fwrt,
 149                                    struct iwl_fw_dbg_trigger_tlv *trig)
 150 {
 151         return ((trig->mode & IWL_FW_DBG_TRIGGER_STOP) &&
 152                 (fwrt->dump.conf == FW_DBG_INVALID ||
 153                 (BIT(fwrt->dump.conf) & le32_to_cpu(trig->stop_conf_ids))));
 154 }
 155
 156 static inline bool
 157 iwl_fw_dbg_no_trig_window(struct iwl_fw_runtime *fwrt,
 158                           struct iwl_fw_dbg_trigger_tlv *trig)
 159 {
 160         unsigned long wind_jiff =
 161                 msecs_to_jiffies(le16_to_cpu(trig->trig_dis_ms));
 162         u32 id = le32_to_cpu(trig->id);
 163
 164         /* If this is the first event checked, jump to update start ts */
 165         if (fwrt->dump.non_collect_ts_start[id] &&
 166             (time_after(fwrt->dump.non_collect_ts_start[id] + wind_jiff,
 167                         jiffies)))
 168                 return true;
 169
 170         fwrt->dump.non_collect_ts_start[id] = jiffies;
 171         return false;
 172 }
 173
 174 static inline bool
 175 iwl_fw_dbg_trigger_check_stop(struct iwl_fw_runtime *fwrt,
 176                               struct wireless_dev *wdev,
 177                               struct iwl_fw_dbg_trigger_tlv *trig)
 178 {
 179         if (wdev && !iwl_fw_dbg_trigger_vif_match(trig, wdev))
 180                 return false;
 181
 182         if (iwl_fw_dbg_no_trig_window(fwrt, trig)) {
 183                 IWL_WARN(fwrt, "Trigger %d occurred while no-collect window.\n",
 184                          trig->id);
 185                 return false;
 186         }
 187
 188         return iwl_fw_dbg_trigger_stop_conf_match(fwrt, trig);
 189 }
 190
 191 static inline void
 192 _iwl_fw_dbg_trigger_simple_stop(struct iwl_fw_runtime *fwrt,
 193                                 struct wireless_dev *wdev,
 194                                 struct iwl_fw_dbg_trigger_tlv *trigger)
 195 {
 196         if (!trigger)
 197                 return;
 198
 199         if (!iwl_fw_dbg_trigger_check_stop(fwrt, wdev, trigger))
 200                 return;
 201
 202         iwl_fw_dbg_collect_trig(fwrt, trigger, NULL);
 203 }
 204
 205 #define iwl_fw_dbg_trigger_simple_stop(fwrt, wdev, trig)        \
 206         _iwl_fw_dbg_trigger_simple_stop((fwrt), (wdev),         \
 207                                         iwl_fw_dbg_get_trigger((fwrt)->fw,\
 208                                                                (trig)))
 209
 210 static int iwl_fw_dbg_start_stop_hcmd(struct iwl_fw_runtime *fwrt, bool start)
 211 {
 212         struct iwl_continuous_record_cmd cont_rec = {};
 213         struct iwl_host_cmd hcmd = {
 214                 .id = LDBG_CONFIG_CMD,
 215                 .flags = CMD_ASYNC,
 216                 .data[0] = &cont_rec,
 217                 .len[0] = sizeof(cont_rec),
 218         };
 219
 220         cont_rec.record_mode.enable_recording = start ?
 221                 cpu_to_le16(START_DEBUG_RECORDING) :
 222                 cpu_to_le16(STOP_DEBUG_RECORDING);
 223
 224         return iwl_trans_send_cmd(fwrt->trans, &hcmd);
 225 }
 226
 227 static inline void
 228 _iwl_fw_dbg_stop_recording(struct iwl_trans *trans,
 229                            struct iwl_fw_dbg_params *params)
 230 {
 231         if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
 232                 iwl_set_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x100);
 233                 return;
 234         }
 235
 236         if (params) {
 237                 params->in_sample = iwl_read_prph(trans, DBGC_IN_SAMPLE);
 238                 params->out_ctrl = iwl_read_prph(trans, DBGC_OUT_CTRL);
 239         }
 240
 241         iwl_write_prph(trans, DBGC_IN_SAMPLE, 0);
 242         udelay(100);
 243         iwl_write_prph(trans, DBGC_OUT_CTRL, 0);
 244 }
 245
 246 static inline void
 247 iwl_fw_dbg_stop_recording(struct iwl_fw_runtime *fwrt,
 248                           struct iwl_fw_dbg_params *params)
 249 {
 250         if (fwrt->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560)
 251                 _iwl_fw_dbg_stop_recording(fwrt->trans, params);
 252         else
 253                 iwl_fw_dbg_start_stop_hcmd(fwrt, false);
 254 }
 255
 256 static inline void
 257 _iwl_fw_dbg_restart_recording(struct iwl_trans *trans,
 258                               struct iwl_fw_dbg_params *params)
 259 {
 260         if (WARN_ON(!params))
 261                 return;
 262
 263         if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
 264                 iwl_clear_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x100);
 265                 iwl_clear_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x1);
 266                 iwl_set_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x1);
 267         } else {
 268                 iwl_write_prph(trans, DBGC_IN_SAMPLE, params->in_sample);
 269                 udelay(100);
 270                 iwl_write_prph(trans, DBGC_OUT_CTRL, params->out_ctrl);
 271         }
 272 }
 273
 274 static inline void
 275 iwl_fw_dbg_restart_recording(struct iwl_fw_runtime *fwrt,
 276                              struct iwl_fw_dbg_params *params)
 277 {
 278         if (fwrt->trans->cfg->device_family < IWL_DEVICE_FAMILY_22560)
 279                 _iwl_fw_dbg_restart_recording(fwrt->trans, params);
 280         else
 281                 iwl_fw_dbg_start_stop_hcmd(fwrt, true);
 282 }
 283
 284 static inline void iwl_fw_dump_conf_clear(struct iwl_fw_runtime *fwrt)
 285 {
 286         fwrt->dump.conf = FW_DBG_INVALID;
 287 }
 288
 289 void iwl_fw_error_dump_wk(struct work_struct *work);
 290
 291 static inline bool iwl_fw_dbg_is_d3_debug_enabled(struct iwl_fw_runtime *fwrt)
 292 {
 293         return fw_has_capa(&fwrt->fw->ucode_capa,
 294                            IWL_UCODE_TLV_CAPA_D3_DEBUG) &&
 295                 fwrt->trans->cfg->d3_debug_data_length &&
 296                 fwrt->fw->dbg_dump_mask & BIT(IWL_FW_ERROR_DUMP_D3_DEBUG_DATA);
 297 }
 298
 299 void iwl_fw_dbg_read_d3_debug_data(struct iwl_fw_runtime *fwrt);
 300
 301 static inline void iwl_fw_flush_dump(struct iwl_fw_runtime *fwrt)
 302 {
 303         flush_delayed_work(&fwrt->dump.wk);
 304 }
 305
 306 static inline void iwl_fw_cancel_dump(struct iwl_fw_runtime *fwrt)
 307 {
 308         cancel_delayed_work_sync(&fwrt->dump.wk);
 309 }
 310
 311 #ifdef CONFIG_IWLWIFI_DEBUGFS
 312 static inline void iwl_fw_cancel_timestamp(struct iwl_fw_runtime *fwrt)
 313 {
 314         fwrt->timestamp.delay = 0;
 315         cancel_delayed_work_sync(&fwrt->timestamp.wk);
 316 }
 317
 318 void iwl_fw_trigger_timestamp(struct iwl_fw_runtime *fwrt, u32 delay);
 319
 320 static inline void iwl_fw_suspend_timestamp(struct iwl_fw_runtime *fwrt)
 321 {
 322         cancel_delayed_work_sync(&fwrt->timestamp.wk);
 323 }
 324
 325 static inline void iwl_fw_resume_timestamp(struct iwl_fw_runtime *fwrt)
 326 {
 327         if (!fwrt->timestamp.delay)
 328                 return;
 329
 330         schedule_delayed_work(&fwrt->timestamp.wk,
 331                               round_jiffies_relative(fwrt->timestamp.delay));
 332 }
 333
 334 #else
 335
 336 static inline void iwl_fw_cancel_timestamp(struct iwl_fw_runtime *fwrt) {}
 337
 338 static inline void iwl_fw_trigger_timestamp(struct iwl_fw_runtime *fwrt,
 339                                             u32 delay) {}
 340
 341 static inline void iwl_fw_suspend_timestamp(struct iwl_fw_runtime *fwrt) {}
 342
 343 static inline void iwl_fw_resume_timestamp(struct iwl_fw_runtime *fwrt) {}
 344
 345 #endif /* CONFIG_IWLWIFI_DEBUGFS */
 346
 347 #endif  /* __iwl_fw_dbg_h__ */