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iwlwifi: mvm: add ctdp operations to debugfs 

Add debugfs entries to get the ctdp budget average
and to stop ctdp.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Chaya Rachel Ivgi 2016-02-24 12:19:22 +02:00 committed by Emmanuel Grumbach
parent 7c70fee5ae
commit 00f481bd89
2 changed files with 86 additions and 34 deletions
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42
drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
View File

@ -73,6 +73,44 @@
#include "debugfs.h"
#include "iwl-fw-error-dump.h"
static ssize_t iwl_dbgfs_ctdp_budget_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, budget;
if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
return -EIO;
mutex_lock(&mvm->mutex);
budget = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_REPORT, 0);
mutex_unlock(&mvm->mutex);
if (budget < 0)
return budget;
pos = scnprintf(buf, sizeof(buf), "%d\n", budget);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t iwl_dbgfs_stop_ctdp_write(struct iwl_mvm *mvm, char *buf,
size_t count, loff_t *ppos)
{
int ret;
if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR)
return -EIO;
mutex_lock(&mvm->mutex);
ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_STOP, 0);
mutex_unlock(&mvm->mutex);
return ret ?: count;
}
static ssize_t iwl_dbgfs_tx_flush_write(struct iwl_mvm *mvm, char *buf,
size_t count, loff_t *ppos)
{
@ -1493,6 +1531,8 @@ iwl_dbgfs_send_echo_cmd_write(struct iwl_mvm *mvm, char *buf,
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(tx_flush, 16);
MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8);
MVM_DEBUGFS_WRITE_FILE_OPS(send_echo_cmd, 8);
@ -1542,6 +1582,8 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
MVM_DEBUGFS_ADD_FILE(set_nic_temperature, mvm->debugfs_dir,
S_IWUSR | S_IRUSR);
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(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);

78
drivers/net/wireless/intel/iwlwifi/mvm/tt.c
View File

@ -510,6 +510,50 @@ static const struct iwl_tt_params iwl_mvm_default_tt_params = {
.support_tx_backoff = true,
};
int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 budget)
{
struct iwl_mvm_ctdp_cmd cmd = {
.operation = cpu_to_le32(op),
.budget = cpu_to_le32(budget),
.window_size = 0,
};
int ret;
u32 status;
lockdep_assert_held(&mvm->mutex);
ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP,
CTDP_CONFIG_CMD),
sizeof(cmd), &cmd, &status);
if (ret) {
IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
return ret;
}
switch (op) {
case CTDP_CMD_OPERATION_START:
#ifdef CONFIG_THERMAL
mvm->cooling_dev.cur_state = budget;
#endif /* CONFIG_THERMAL */
break;
case CTDP_CMD_OPERATION_REPORT:
IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
/* when the function is called with CTDP_CMD_OPERATION_REPORT
* option the function should return the average budget value
* that is received from the FW.
* The budget can't be less or equal to 0, so it's possible
* to distinguish between error values and budgets.
*/
return status;
case CTDP_CMD_OPERATION_STOP:
IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n");
break;
}
return 0;
}
#ifdef CONFIG_THERMAL
static int compare_temps(const void *a, const void *b)
{
@ -738,40 +782,6 @@ static const u32 iwl_mvm_cdev_budgets[] = {
150, /* cooling state 19 */
};
int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 budget)
{
struct iwl_mvm_ctdp_cmd cmd = {
.operation = cpu_to_le32(op),
.budget = cpu_to_le32(budget),
.window_size = 0,
};
int ret;
u32 status;
lockdep_assert_held(&mvm->mutex);
ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP,
CTDP_CONFIG_CMD),
sizeof(cmd), &cmd, &status);
if (ret) {
IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
return ret;
}
/* can happen if the registration failed */
if (!mvm->cooling_dev.cdev)
return -EINVAL;
if (op == CTDP_CMD_OPERATION_START)
mvm->cooling_dev.cur_state = budget;
else if (op == CTDP_CMD_OPERATION_REPORT)
IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
return 0;
}
static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev,
unsigned long *state)
{