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iwlwifi: mvm: Add set NIC temperature debug option

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Add ability to set the NIC's temperature and ignore the actual temperature
that the FW supplies.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Matti Gottlieb 2014-07-17 16:41:14 +03:00 committed by Emmanuel Grumbach
parent 433ab34d26
commit 7280d1f0bd
3 changed files with 86 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
drivers/net/wireless/iwlwifi/mvm/debugfs.c
View File

@ -257,6 +257,60 @@ static ssize_t iwl_dbgfs_sram_write(struct iwl_mvm *mvm, char *buf,
return count;
}
static ssize_t iwl_dbgfs_set_nic_temperature_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_mvm *mvm = file->private_data;
char buf[16];
int pos;
if (!mvm->temperature_test)
pos = scnprintf(buf , sizeof(buf), "disabled\n");
else
pos = scnprintf(buf , sizeof(buf), "%d\n", mvm->temperature);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
/*
* Set NIC Temperature
* Cause the driver to ignore the actual NIC temperature reported by the FW
* Enable: any value between IWL_MVM_DEBUG_SET_TEMPERATURE_MIN -
* IWL_MVM_DEBUG_SET_TEMPERATURE_MAX
* Disable: IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE
*/
static ssize_t iwl_dbgfs_set_nic_temperature_write(struct iwl_mvm *mvm,
char *buf, size_t count,
loff_t *ppos)
{
int temperature;
if (kstrtoint(buf, 10, &temperature))
return -EINVAL;
/* not a legal temperature */
if ((temperature > IWL_MVM_DEBUG_SET_TEMPERATURE_MAX &&
temperature != IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) ||
temperature < IWL_MVM_DEBUG_SET_TEMPERATURE_MIN)
return -EINVAL;
mutex_lock(&mvm->mutex);
if (temperature == IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) {
mvm->temperature_test = false;
} else {
mvm->temperature_test = true;
mvm->temperature = temperature;
}
IWL_DEBUG_TEMP(mvm, "%sabling debug set temperature (temp = %d)\n",
mvm->temperature_test ? "En" : "Dis" ,
mvm->temperature);
/* handle the temperature change */
iwl_mvm_tt_handler(mvm);
mutex_unlock(&mvm->mutex);
return count;
}
static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
@ -1296,6 +1350,7 @@ MVM_DEBUGFS_READ_WRITE_FILE_OPS(prph_reg, 64);
MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16);
MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64);
MVM_DEBUGFS_READ_FILE_OPS(stations);
MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
@ -1336,6 +1391,8 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR);
MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR);
MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
MVM_DEBUGFS_ADD_FILE(set_nic_temperature, mvm->debugfs_dir,
S_IWUSR | S_IRUSR);
MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
MVM_DEBUGFS_ADD_FILE(fw_error_dump, dbgfs_dir, S_IRUSR);
MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);

10
drivers/net/wireless/iwlwifi/mvm/mvm.h
View File

@ -512,6 +512,10 @@ enum {
D0I3_PENDING_WAKEUP,
};
#define IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE 0xff
#define IWL_MVM_DEBUG_SET_TEMPERATURE_MIN -100
#define IWL_MVM_DEBUG_SET_TEMPERATURE_MAX 200
struct iwl_mvm {
/* for logger access */
struct device *dev;
@ -694,6 +698,12 @@ struct iwl_mvm {
/* Thermal Throttling and CTkill */
struct iwl_mvm_tt_mgmt thermal_throttle;
s32 temperature; /* Celsius */
/*
* Debug option to set the NIC temperature. This option makes the
* driver think this is the actual NIC temperature, and ignore the
* real temperature that is received from the fw
*/
bool temperature_test; /* Debug test temperature is enabled */
#ifdef CONFIG_NL80211_TESTMODE
u32 noa_duration;

19
drivers/net/wireless/iwlwifi/mvm/rx.c
View File

@ -491,10 +491,29 @@ int iwl_mvm_rx_statistics(struct iwl_mvm *mvm,
.mvm = mvm,
};
/*
* set temperature debug enabled - ignore FW temperature updates
* and use the user set temperature.
*/
if (mvm->temperature_test) {
if (mvm->temperature < le32_to_cpu(common->temperature))
IWL_DEBUG_TEMP(mvm,
"Ignoring FW temperature update that is greater than the debug set temperature (debug temp = %d, fw temp = %d)\n",
mvm->temperature,
le32_to_cpu(common->temperature));
/*
* skip iwl_mvm_tt_handler since we are in
* temperature debug mode and we are ignoring
* the new temperature value
*/
goto update;
}
if (mvm->temperature != le32_to_cpu(common->temperature)) {
mvm->temperature = le32_to_cpu(common->temperature);
iwl_mvm_tt_handler(mvm);
}
update:
iwl_mvm_update_rx_statistics(mvm, stats);
ieee80211_iterate_active_interfaces(mvm->hw,