diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c | 26 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/utils.c | 22 |
3 files changed, 49 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c index b23271755daf..8ff19210ef1e 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c @@ -504,6 +504,28 @@ static inline char *iwl_dbgfs_is_match(char *name, char *buf) return !strncmp(name, buf, len) ? buf + len : NULL; } +static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_vif *vif = file->private_data; + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct iwl_mvm *mvm = mvmvif->mvm; + u32 curr_gp2; + u64 curr_os; + s64 diff; + char buf[64]; + const size_t bufsz = sizeof(buf); + int pos = 0; + + iwl_mvm_get_sync_time(mvm, &curr_gp2, &curr_os); + do_div(curr_os, NSEC_PER_USEC); + diff = curr_os - curr_gp2; + pos += scnprintf(buf + pos, bufsz - pos, "diff=%lld\n", diff); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + static ssize_t iwl_dbgfs_tof_enable_write(struct ieee80211_vif *vif, char *buf, size_t count, loff_t *ppos) @@ -1530,6 +1552,8 @@ MVM_DEBUGFS_READ_FILE_OPS(tof_range_response); MVM_DEBUGFS_READ_WRITE_FILE_OPS(tof_responder_params, 32); MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32); MVM_DEBUGFS_WRITE_FILE_OPS(lqm_send_cmd, 64); +MVM_DEBUGFS_READ_FILE_OPS(os_device_timediff); + void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { @@ -1570,6 +1594,8 @@ void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif) MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, S_IRUSR | S_IWUSR); MVM_DEBUGFS_ADD_FILE_VIF(lqm_send_cmd, mvmvif->dbgfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE_VIF(os_device_timediff, + mvmvif->dbgfs_dir, S_IRUSR); if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p && mvmvif == mvm->bf_allowed_vif) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index e68a2bdc84ed..b7cfdcbcf95b 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -1268,6 +1268,7 @@ u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx); void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm); u8 first_antenna(u8 mask); u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx); +void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime); /* Tx / Host Commands */ int __must_check iwl_mvm_send_cmd(struct iwl_mvm *mvm, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c index 7c138fedcb19..9e366e28c983 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c @@ -1225,6 +1225,28 @@ void iwl_mvm_inactivity_check(struct iwl_mvm *mvm) rcu_read_unlock(); } +void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) +{ + bool ps_disabled; + + lockdep_assert_held(&mvm->mutex); + + /* Disable power save when reading GP2 */ + ps_disabled = mvm->ps_disabled; + if (!ps_disabled) { + mvm->ps_disabled = true; + iwl_mvm_power_update_device(mvm); + } + + *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG); + *boottime = ktime_get_boot_ns(); + + if (!ps_disabled) { + mvm->ps_disabled = ps_disabled; + iwl_mvm_power_update_device(mvm); + } +} + int iwl_mvm_send_lqm_cmd(struct ieee80211_vif *vif, enum iwl_lqm_cmd_operatrions operation, u32 duration, u32 timeout) |
