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Commit 61d8c626 authored by Chaya Rachel Ivgi's avatar Chaya Rachel Ivgi Committed by Luca Coelho
Browse files

iwlwifi: mvm: add debugfs to force CT-kill 



CT-kill is a thermal-based "RF-kill", which disables the NIC
completely if the temperature gets too high, in order to avoid damage.

Add a debugfs entry to simulate high temperatures, in order to test
CT-kill flows in the driver without having to physically heat the
device up.

Signed-off-by: default avatarChaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent b1a1efc5

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

+14 −0
Original line number Diff line number Diff line
@@ -114,6 +114,18 @@ static ssize_t iwl_dbgfs_stop_ctdp_write(struct iwl_mvm *mvm, char *buf, 
	return ret ?: count;

}



static ssize_t iwl_dbgfs_force_ctkill_write(struct iwl_mvm *mvm, char *buf,

					    size_t count, loff_t *ppos)

{

	if (!iwl_mvm_firmware_running(mvm) ||

	    mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)

		return -EIO;



	iwl_mvm_enter_ctkill(mvm);



	return count;

}



static ssize_t iwl_dbgfs_tx_flush_write(struct iwl_mvm *mvm, char *buf,

					size_t count, loff_t *ppos)

{
@@ -1641,6 +1653,7 @@ MVM_DEBUGFS_READ_WRITE_FILE_OPS(prph_reg, 64); 
/* Device wide debugfs entries */

MVM_DEBUGFS_READ_FILE_OPS(ctdp_budget);

MVM_DEBUGFS_WRITE_FILE_OPS(stop_ctdp, 8);

MVM_DEBUGFS_WRITE_FILE_OPS(force_ctkill, 8);

MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16);

MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);

MVM_DEBUGFS_WRITE_FILE_OPS(send_echo_cmd, 8);
@@ -1828,6 +1841,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir) 
	MVM_DEBUGFS_ADD_FILE(nic_temp, dbgfs_dir, S_IRUSR);

	MVM_DEBUGFS_ADD_FILE(ctdp_budget, dbgfs_dir, S_IRUSR);

	MVM_DEBUGFS_ADD_FILE(stop_ctdp, dbgfs_dir, S_IWUSR);

	MVM_DEBUGFS_ADD_FILE(force_ctkill, dbgfs_dir, S_IWUSR);

	MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);

	MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);

	MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, S_IRUSR);

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

+1 −0
Original line number Diff line number Diff line
@@ -1755,6 +1755,7 @@ void iwl_mvm_thermal_exit(struct iwl_mvm *mvm); 
void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state);

int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp);

void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);

void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm);

int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm);

int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 budget);

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

+1 −1
Original line number Diff line number Diff line
@@ -71,7 +71,7 @@ 


#define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT	HZ



static void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm)

void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm)

{

	struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;

	u32 duration = tt->params.ct_kill_duration;