Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b3bee580 authored by Roee Zamir's avatar Roee Zamir Committed by Luca Coelho
Browse files

iwlwifi: mvm: Add debugfs function for clocks diff 



New function, reveals the diff between gp2 and host time.

Signed-off-by: default avatarRoee Zamir <roee.zamir@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent 5a41a86c

drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c

+26 −0
Original line number Diff line number Diff line
@@ -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)

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

+1 −0
Original line number Diff line number Diff line
@@ -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,

drivers/net/wireless/intel/iwlwifi/mvm/utils.c

+22 −0
Original line number Diff line number Diff line
@@ -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)