Commit a2d450e3 authored by Anjaneyulu's avatar Anjaneyulu Committed by Johannes Berg
Browse files

wifi: iwlwifi: mvm: debugfs for fw system stats 



Add debgufs handler for fw system statistics command.

Signed-off-by: default avatarAnjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: default avatarGregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20231022173519.e77efee7cd85.I99f370f26f94f73e06aec2a8eaf21ebcc82f60a9@changeid


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent b6e3d1ba

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

+104 −0
Original line number Diff line number Diff line
@@ -1005,6 +1005,13 @@ static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file, 
	char *buf;

	int ret;

	size_t bufsz;

	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,

					   WIDE_ID(SYSTEM_GROUP,

						   SYSTEM_STATISTICS_CMD),

					   IWL_FW_CMD_VER_UNKNOWN);



	if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)

		return -EOPNOTSUPP;



	if (iwl_mvm_has_new_rx_stats_api(mvm))

		bufsz = ((sizeof(struct mvm_statistics_rx) /
@@ -1184,6 +1191,101 @@ static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file, 
}

#undef PRINT_STAT_LE32



static ssize_t iwl_dbgfs_fw_system_stats_read(struct file *file,

					      char __user *user_buf,

					      size_t count, loff_t *ppos)

{

	char *buff, *pos, *endpos;

	int ret;

	size_t bufsz;

	int i;

	struct iwl_mvm_vif *mvmvif;

	struct ieee80211_vif *vif;

	struct iwl_mvm *mvm = file->private_data;

	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,

					   WIDE_ID(SYSTEM_GROUP,

						   SYSTEM_STATISTICS_CMD),

					   IWL_FW_CMD_VER_UNKNOWN);



	/* in case of a wrong cmd version, allocate buffer only for error msg */

	bufsz = (cmd_ver == 1) ? 4096 : 64;



	buff = kzalloc(bufsz, GFP_KERNEL);

	if (!buff)

		return -ENOMEM;



	pos = buff;

	endpos = pos + bufsz;



	if (cmd_ver != 1) {

		pos += scnprintf(pos, endpos - pos,

				 "System stats not supported:%d\n", cmd_ver);

		goto send_out;

	}



	mutex_lock(&mvm->mutex);

	if (iwl_mvm_firmware_running(mvm))

		iwl_mvm_request_statistics(mvm, false);



	for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {

		vif = iwl_mvm_rcu_dereference_vif_id(mvm, i, false);

		if (!vif)

			continue;



		if (vif->type == NL80211_IFTYPE_STATION)

			break;

	}



	if (i == NUM_MAC_INDEX_DRIVER || !vif) {

		pos += scnprintf(pos, endpos - pos, "vif is NULL\n");

		goto release_send_out;

	}



	mvmvif = iwl_mvm_vif_from_mac80211(vif);

	if (!mvmvif) {

		pos += scnprintf(pos, endpos - pos, "mvmvif is NULL\n");

		goto release_send_out;

	}



	for_each_mvm_vif_valid_link(mvmvif, i) {

		struct iwl_mvm_vif_link_info *link_info = mvmvif->link[i];



		pos += scnprintf(pos, endpos - pos,

				 "link_id %d", i);

		pos += scnprintf(pos, endpos - pos,

				 " num_beacons %d",

				 link_info->beacon_stats.num_beacons);

		pos += scnprintf(pos, endpos - pos,

				 " accu_num_beacons %d",

				 link_info->beacon_stats.accu_num_beacons);

		pos += scnprintf(pos, endpos - pos,

				 " avg_signal %d\n",

				 link_info->beacon_stats.avg_signal);

	}



	pos += scnprintf(pos, endpos - pos,

			 "radio_stats.rx_time %lld\n",

			 mvm->radio_stats.rx_time);

	pos += scnprintf(pos, endpos - pos,

			 "radio_stats.tx_time %lld\n",

			 mvm->radio_stats.tx_time);

	pos += scnprintf(pos, endpos - pos,

			 "accu_radio_stats.rx_time %lld\n",

			 mvm->accu_radio_stats.rx_time);

	pos += scnprintf(pos, endpos - pos,

			 "accu_radio_stats.tx_time %lld\n",

			 mvm->accu_radio_stats.tx_time);



release_send_out:

	mutex_unlock(&mvm->mutex);



send_out:

	ret = simple_read_from_buffer(user_buf, count, ppos, buff, pos - buff);

	kfree(buff);



	return ret;

}



static ssize_t iwl_dbgfs_frame_stats_read(struct iwl_mvm *mvm,

					  char __user *user_buf, size_t count,

					  loff_t *ppos,
@@ -2053,6 +2155,7 @@ MVM_DEBUGFS_READ_FILE_OPS(bt_cmd); 
MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off, 64);

MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);

MVM_DEBUGFS_READ_FILE_OPS(drv_rx_stats);

MVM_DEBUGFS_READ_FILE_OPS(fw_system_stats);

MVM_DEBUGFS_READ_FILE_OPS(fw_ver);

MVM_DEBUGFS_READ_FILE_OPS(phy_integration_ver);

MVM_DEBUGFS_READ_FILE_OPS(tas_get_status);
@@ -2260,6 +2363,7 @@ void iwl_mvm_dbgfs_register(struct iwl_mvm *mvm) 
	MVM_DEBUGFS_ADD_FILE(fw_ver, mvm->debugfs_dir, 0400);

	MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, 0400);

	MVM_DEBUGFS_ADD_FILE(drv_rx_stats, mvm->debugfs_dir, 0400);

	MVM_DEBUGFS_ADD_FILE(fw_system_stats, mvm->debugfs_dir, 0400);

	MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, 0200);

	MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, 0200);

	MVM_DEBUGFS_ADD_FILE(bt_tx_prio, mvm->debugfs_dir, 0200);