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  *
  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.
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  19  * General Public License for more details.
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  22  * along with this program;
  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 <linuxwifi@intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  34  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  35  * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
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  64  *****************************************************************************/
  65
  66 #ifndef __iwl_fw_dbg_h__
  67 #define __iwl_fw_dbg_h__
  68 #include <linux/workqueue.h>
  69 #include <net/cfg80211.h>
  70 #include "runtime.h"
  71 #include "iwl-prph.h"
  72 #include "iwl-io.h"
  73 #include "file.h"
  74 #include "error-dump.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 extern const struct iwl_fw_dump_desc iwl_dump_desc_assert;
  88
  89 static inline void iwl_fw_free_dump_desc(struct iwl_fw_runtime *fwrt)
  90 {
  91         if (fwrt->dump.desc != &iwl_dump_desc_assert)
  92                 kfree(fwrt->dump.desc);
  93         fwrt->dump.desc = NULL;
  94 }
  95
  96 void iwl_fw_error_dump(struct iwl_fw_runtime *fwrt);
  97 int iwl_fw_dbg_collect_desc(struct iwl_fw_runtime *fwrt,
  98                             const struct iwl_fw_dump_desc *desc,
  99                             const struct iwl_fw_dbg_trigger_tlv *trigger);
 100 int iwl_fw_dbg_collect(struct iwl_fw_runtime *fwrt,
 101                        enum iwl_fw_dbg_trigger trig,
 102                        const char *str, size_t len,
 103                        const struct iwl_fw_dbg_trigger_tlv *trigger);
 104 int iwl_fw_dbg_collect_trig(struct iwl_fw_runtime *fwrt,
 105                             struct iwl_fw_dbg_trigger_tlv *trigger,
 106                             const char *fmt, ...) __printf(3, 4);
 107 int iwl_fw_start_dbg_conf(struct iwl_fw_runtime *fwrt, u8 id);
 108
 109 #define iwl_fw_dbg_trigger_enabled(fw, id) ({                   \
 110         void *__dbg_trigger = (fw)->dbg_trigger_tlv[(id)];      \
 111         unlikely(__dbg_trigger);                                \
 112 })
 113
 114 static inline struct iwl_fw_dbg_trigger_tlv*
 115 _iwl_fw_dbg_get_trigger(const struct iwl_fw *fw, enum iwl_fw_dbg_trigger id)
 116 {
 117         return fw->dbg_trigger_tlv[id];
 118 }
 119
 120 #define iwl_fw_dbg_get_trigger(fw, id) ({                       \
 121         BUILD_BUG_ON(!__builtin_constant_p(id));                \
 122         BUILD_BUG_ON((id) >= FW_DBG_TRIGGER_MAX);               \
 123         _iwl_fw_dbg_get_trigger((fw), (id));                    \
 124 })
 125
 126 static inline bool
 127 iwl_fw_dbg_trigger_vif_match(struct iwl_fw_dbg_trigger_tlv *trig,
 128                              struct wireless_dev *wdev)
 129 {
 130         u32 trig_vif = le32_to_cpu(trig->vif_type);
 131
 132         return trig_vif == IWL_FW_DBG_CONF_VIF_ANY ||
 133                wdev->iftype == trig_vif;
 134 }
 135
 136 static inline bool
 137 iwl_fw_dbg_trigger_stop_conf_match(struct iwl_fw_runtime *fwrt,
 138                                    struct iwl_fw_dbg_trigger_tlv *trig)
 139 {
 140         return ((trig->mode & IWL_FW_DBG_TRIGGER_STOP) &&
 141                 (fwrt->dump.conf == FW_DBG_INVALID ||
 142                 (BIT(fwrt->dump.conf) & le32_to_cpu(trig->stop_conf_ids))));
 143 }
 144
 145 static inline bool
 146 iwl_fw_dbg_no_trig_window(struct iwl_fw_runtime *fwrt,
 147                           struct iwl_fw_dbg_trigger_tlv *trig)
 148 {
 149         unsigned long wind_jiff =
 150                 msecs_to_jiffies(le16_to_cpu(trig->trig_dis_ms));
 151         u32 id = le32_to_cpu(trig->id);
 152
 153         /* If this is the first event checked, jump to update start ts */
 154         if (fwrt->dump.non_collect_ts_start[id] &&
 155             (time_after(fwrt->dump.non_collect_ts_start[id] + wind_jiff,
 156                         jiffies)))
 157                 return true;
 158
 159         fwrt->dump.non_collect_ts_start[id] = jiffies;
 160         return false;
 161 }
 162
 163 static inline bool
 164 iwl_fw_dbg_trigger_check_stop(struct iwl_fw_runtime *fwrt,
 165                               struct wireless_dev *wdev,
 166                               struct iwl_fw_dbg_trigger_tlv *trig)
 167 {
 168         if (wdev && !iwl_fw_dbg_trigger_vif_match(trig, wdev))
 169                 return false;
 170
 171         if (iwl_fw_dbg_no_trig_window(fwrt, trig)) {
 172                 IWL_WARN(fwrt, "Trigger %d occurred while no-collect window.\n",
 173                          trig->id);
 174                 return false;
 175         }
 176
 177         return iwl_fw_dbg_trigger_stop_conf_match(fwrt, trig);
 178 }
 179
 180 static inline void
 181 _iwl_fw_dbg_trigger_simple_stop(struct iwl_fw_runtime *fwrt,
 182                                 struct wireless_dev *wdev,
 183                                 struct iwl_fw_dbg_trigger_tlv *trigger)
 184 {
 185         if (!trigger)
 186                 return;
 187
 188         if (!iwl_fw_dbg_trigger_check_stop(fwrt, wdev, trigger))
 189                 return;
 190
 191         iwl_fw_dbg_collect_trig(fwrt, trigger, NULL);
 192 }
 193
 194 #define iwl_fw_dbg_trigger_simple_stop(fwrt, wdev, trig)        \
 195         _iwl_fw_dbg_trigger_simple_stop((fwrt), (wdev),         \
 196                                         iwl_fw_dbg_get_trigger((fwrt)->fw,\
 197                                                                (trig)))
 198
 199 static inline void iwl_fw_dbg_stop_recording(struct iwl_fw_runtime *fwrt)
 200 {
 201         if (fwrt->trans->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
 202                 iwl_set_bits_prph(fwrt->trans, MON_BUFF_SAMPLE_CTL, 0x100);
 203         } else {
 204                 iwl_write_prph(fwrt->trans, DBGC_IN_SAMPLE, 0);
 205                 udelay(100);
 206                 iwl_write_prph(fwrt->trans, DBGC_OUT_CTRL, 0);
 207         }
 208 }
 209
 210 static inline void iwl_fw_dump_conf_clear(struct iwl_fw_runtime *fwrt)
 211 {
 212         iwl_fw_dbg_stop_recording(fwrt);
 213
 214         fwrt->dump.conf = FW_DBG_INVALID;
 215 }
 216
 217 void iwl_fw_error_dump_wk(struct work_struct *work);
 218
 219 static inline void iwl_fw_flush_dump(struct iwl_fw_runtime *fwrt)
 220 {
 221         flush_delayed_work(&fwrt->dump.wk);
 222 }
 223
 224 static inline void iwl_fw_cancel_dump(struct iwl_fw_runtime *fwrt)
 225 {
 226         cancel_delayed_work_sync(&fwrt->dump.wk);
 227 }
 228
 229 #endif  /* __iwl_fw_dbg_h__ */