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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: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Chaya Rachel Ivgi 2017-06-27 14:13:02 +03:00 committed by Luca Coelho
parent b1a1efc576
commit 61d8c62646
3 changed files with 16 additions and 1 deletions
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14
drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
View File

@ -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);

1
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
View File

@ -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);

2
drivers/net/wireless/intel/iwlwifi/mvm/tt.c
View File

@ -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;