summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/iwlwifi/iwl-power.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-power.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-power.c149
1 files changed, 119 insertions, 30 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c
index 60be976afff8..9c6b14952061 100644
--- a/drivers/net/wireless/iwlwifi/iwl-power.c
+++ b/drivers/net/wireless/iwlwifi/iwl-power.c
@@ -165,26 +165,26 @@ static void iwl_static_sleep_cmd(struct iwl_priv *priv,
*=============================================================================
* Condition Nxt State Condition Nxt State Condition Nxt State
*-----------------------------------------------------------------------------
- * IWL_TI_0 T >= 115 CT_KILL 115>T>=105 TI_1 N/A N/A
- * IWL_TI_1 T >= 115 CT_KILL 115>T>=110 TI_2 T<=95 TI_0
- * IWL_TI_2 T >= 115 CT_KILL T<=100 TI_1
+ * IWL_TI_0 T >= 114 CT_KILL 114>T>=105 TI_1 N/A N/A
+ * IWL_TI_1 T >= 114 CT_KILL 114>T>=110 TI_2 T<=95 TI_0
+ * IWL_TI_2 T >= 114 CT_KILL T<=100 TI_1
* IWL_CT_KILL N/A N/A N/A N/A T<=95 TI_0
*=============================================================================
*/
static const struct iwl_tt_trans tt_range_0[IWL_TI_STATE_MAX - 1] = {
{IWL_TI_0, IWL_ABSOLUTE_ZERO, 104},
- {IWL_TI_1, 105, CT_KILL_THRESHOLD},
- {IWL_TI_CT_KILL, CT_KILL_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
+ {IWL_TI_1, 105, CT_KILL_THRESHOLD - 1},
+ {IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
};
static const struct iwl_tt_trans tt_range_1[IWL_TI_STATE_MAX - 1] = {
{IWL_TI_0, IWL_ABSOLUTE_ZERO, 95},
- {IWL_TI_2, 110, CT_KILL_THRESHOLD},
- {IWL_TI_CT_KILL, CT_KILL_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
+ {IWL_TI_2, 110, CT_KILL_THRESHOLD - 1},
+ {IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
};
static const struct iwl_tt_trans tt_range_2[IWL_TI_STATE_MAX - 1] = {
{IWL_TI_1, IWL_ABSOLUTE_ZERO, 100},
- {IWL_TI_CT_KILL, CT_KILL_THRESHOLD + 1, IWL_ABSOLUTE_MAX},
- {IWL_TI_CT_KILL, CT_KILL_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
+ {IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX},
+ {IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
};
static const struct iwl_tt_trans tt_range_3[IWL_TI_STATE_MAX - 1] = {
{IWL_TI_0, IWL_ABSOLUTE_ZERO, CT_KILL_EXIT_THRESHOLD},
@@ -294,6 +294,9 @@ int iwl_power_update_mode(struct iwl_priv *priv, bool force)
if (priv->cfg->broken_powersave)
iwl_power_sleep_cam_cmd(priv, &cmd);
+ else if (priv->cfg->supports_idle &&
+ priv->hw->conf.flags & IEEE80211_CONF_IDLE)
+ iwl_static_sleep_cmd(priv, &cmd, IWL_POWER_INDEX_5, 20);
else if (tt->state >= IWL_TI_1)
iwl_static_sleep_cmd(priv, &cmd, tt->tt_power_mode, dtimper);
else if (!enabled)
@@ -348,6 +351,23 @@ bool iwl_ht_enabled(struct iwl_priv *priv)
}
EXPORT_SYMBOL(iwl_ht_enabled);
+bool iwl_within_ct_kill_margin(struct iwl_priv *priv)
+{
+ s32 temp = priv->temperature; /* degrees CELSIUS except 4965 */
+ bool within_margin = false;
+
+ if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)
+ temp = KELVIN_TO_CELSIUS(priv->temperature);
+
+ if (!priv->thermal_throttle.advanced_tt)
+ within_margin = ((temp + IWL_TT_CT_KILL_MARGIN) >=
+ CT_KILL_THRESHOLD_LEGACY) ? true : false;
+ else
+ within_margin = ((temp + IWL_TT_CT_KILL_MARGIN) >=
+ CT_KILL_THRESHOLD) ? true : false;
+ return within_margin;
+}
+
enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv)
{
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
@@ -372,6 +392,7 @@ enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv)
}
#define CT_KILL_EXIT_DURATION (5) /* 5 seconds duration */
+#define CT_KILL_WAITING_DURATION (300) /* 300ms duration */
/*
* toggle the bit to wake up uCode and check the temperature
@@ -409,6 +430,7 @@ static void iwl_tt_check_exit_ct_kill(unsigned long data)
/* Reschedule the ct_kill timer to occur in
* CT_KILL_EXIT_DURATION seconds to ensure we get a
* thermal update */
+ IWL_DEBUG_POWER(priv, "schedule ct_kill exit timer\n");
mod_timer(&priv->thermal_throttle.ct_kill_exit_tm, jiffies +
CT_KILL_EXIT_DURATION * HZ);
}
@@ -432,6 +454,33 @@ static void iwl_perform_ct_kill_task(struct iwl_priv *priv,
}
}
+static void iwl_tt_ready_for_ct_kill(unsigned long data)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)data;
+ struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ /* temperature timer expired, ready to go into CT_KILL state */
+ if (tt->state != IWL_TI_CT_KILL) {
+ IWL_DEBUG_POWER(priv, "entering CT_KILL state when temperature timer expired\n");
+ tt->state = IWL_TI_CT_KILL;
+ set_bit(STATUS_CT_KILL, &priv->status);
+ iwl_perform_ct_kill_task(priv, true);
+ }
+}
+
+static void iwl_prepare_ct_kill_task(struct iwl_priv *priv)
+{
+ IWL_DEBUG_POWER(priv, "Prepare to enter IWL_TI_CT_KILL\n");
+ /* make request to retrieve statistics information */
+ iwl_send_statistics_request(priv, 0);
+ /* Reschedule the ct_kill wait timer */
+ mod_timer(&priv->thermal_throttle.ct_kill_waiting_tm,
+ jiffies + msecs_to_jiffies(CT_KILL_WAITING_DURATION));
+}
+
#define IWL_MINIMAL_POWER_THRESHOLD (CT_KILL_THRESHOLD_LEGACY)
#define IWL_REDUCED_PERFORMANCE_THRESHOLD_2 (100)
#define IWL_REDUCED_PERFORMANCE_THRESHOLD_1 (90)
@@ -445,7 +494,7 @@ static void iwl_perform_ct_kill_task(struct iwl_priv *priv,
* Throttle early enough to lower the power consumption before
* drastic steps are needed
*/
-static void iwl_legacy_tt_handler(struct iwl_priv *priv, s32 temp)
+static void iwl_legacy_tt_handler(struct iwl_priv *priv, s32 temp, bool force)
{
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
enum iwl_tt_state old_state;
@@ -474,6 +523,8 @@ static void iwl_legacy_tt_handler(struct iwl_priv *priv, s32 temp)
#ifdef CONFIG_IWLWIFI_DEBUG
tt->tt_previous_temp = temp;
#endif
+ /* stop ct_kill_waiting_tm timer */
+ del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
if (tt->state != old_state) {
switch (tt->state) {
case IWL_TI_0:
@@ -494,17 +545,28 @@ static void iwl_legacy_tt_handler(struct iwl_priv *priv, s32 temp)
break;
}
mutex_lock(&priv->mutex);
- if (iwl_power_update_mode(priv, true)) {
+ if (old_state == IWL_TI_CT_KILL)
+ clear_bit(STATUS_CT_KILL, &priv->status);
+ if (tt->state != IWL_TI_CT_KILL &&
+ iwl_power_update_mode(priv, true)) {
/* TT state not updated
* try again during next temperature read
*/
+ if (old_state == IWL_TI_CT_KILL)
+ set_bit(STATUS_CT_KILL, &priv->status);
tt->state = old_state;
IWL_ERR(priv, "Cannot update power mode, "
"TT state not updated\n");
} else {
- if (tt->state == IWL_TI_CT_KILL)
- iwl_perform_ct_kill_task(priv, true);
- else if (old_state == IWL_TI_CT_KILL &&
+ if (tt->state == IWL_TI_CT_KILL) {
+ if (force) {
+ set_bit(STATUS_CT_KILL, &priv->status);
+ iwl_perform_ct_kill_task(priv, true);
+ } else {
+ iwl_prepare_ct_kill_task(priv);
+ tt->state = old_state;
+ }
+ } else if (old_state == IWL_TI_CT_KILL &&
tt->state != IWL_TI_CT_KILL)
iwl_perform_ct_kill_task(priv, false);
IWL_DEBUG_POWER(priv, "Temperature state changed %u\n",
@@ -531,13 +593,13 @@ static void iwl_legacy_tt_handler(struct iwl_priv *priv, s32 temp)
*=============================================================================
* Condition Nxt State Condition Nxt State Condition Nxt State
*-----------------------------------------------------------------------------
- * IWL_TI_0 T >= 115 CT_KILL 115>T>=105 TI_1 N/A N/A
- * IWL_TI_1 T >= 115 CT_KILL 115>T>=110 TI_2 T<=95 TI_0
- * IWL_TI_2 T >= 115 CT_KILL T<=100 TI_1
+ * IWL_TI_0 T >= 114 CT_KILL 114>T>=105 TI_1 N/A N/A
+ * IWL_TI_1 T >= 114 CT_KILL 114>T>=110 TI_2 T<=95 TI_0
+ * IWL_TI_2 T >= 114 CT_KILL T<=100 TI_1
* IWL_CT_KILL N/A N/A N/A N/A T<=95 TI_0
*=============================================================================
*/
-static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp)
+static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp, bool force)
{
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
int i;
@@ -582,6 +644,8 @@ static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp)
break;
}
}
+ /* stop ct_kill_waiting_tm timer */
+ del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
if (changed) {
struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
@@ -613,12 +677,17 @@ static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp)
iwl_set_rxon_ht(priv, &priv->current_ht_config);
}
mutex_lock(&priv->mutex);
- if (iwl_power_update_mode(priv, true)) {
+ if (old_state == IWL_TI_CT_KILL)
+ clear_bit(STATUS_CT_KILL, &priv->status);
+ if (tt->state != IWL_TI_CT_KILL &&
+ iwl_power_update_mode(priv, true)) {
/* TT state not updated
* try again during next temperature read
*/
IWL_ERR(priv, "Cannot update power mode, "
"TT state not updated\n");
+ if (old_state == IWL_TI_CT_KILL)
+ set_bit(STATUS_CT_KILL, &priv->status);
tt->state = old_state;
} else {
IWL_DEBUG_POWER(priv,
@@ -626,9 +695,15 @@ static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp)
tt->state);
if (old_state != IWL_TI_CT_KILL &&
tt->state == IWL_TI_CT_KILL) {
- IWL_DEBUG_POWER(priv, "Enter IWL_TI_CT_KILL\n");
- iwl_perform_ct_kill_task(priv, true);
-
+ if (force) {
+ IWL_DEBUG_POWER(priv,
+ "Enter IWL_TI_CT_KILL\n");
+ set_bit(STATUS_CT_KILL, &priv->status);
+ iwl_perform_ct_kill_task(priv, true);
+ } else {
+ iwl_prepare_ct_kill_task(priv);
+ tt->state = old_state;
+ }
} else if (old_state == IWL_TI_CT_KILL &&
tt->state != IWL_TI_CT_KILL) {
IWL_DEBUG_POWER(priv, "Exit IWL_TI_CT_KILL\n");
@@ -665,10 +740,11 @@ static void iwl_bg_ct_enter(struct work_struct *work)
"- ucode going to sleep!\n");
if (!priv->thermal_throttle.advanced_tt)
iwl_legacy_tt_handler(priv,
- IWL_MINIMAL_POWER_THRESHOLD);
+ IWL_MINIMAL_POWER_THRESHOLD,
+ true);
else
iwl_advance_tt_handler(priv,
- CT_KILL_THRESHOLD + 1);
+ CT_KILL_THRESHOLD + 1, true);
}
}
@@ -695,11 +771,18 @@ static void iwl_bg_ct_exit(struct work_struct *work)
IWL_ERR(priv,
"Device temperature below critical"
"- ucode awake!\n");
+ /*
+ * exit from CT_KILL state
+ * reset the current temperature reading
+ */
+ priv->temperature = 0;
if (!priv->thermal_throttle.advanced_tt)
iwl_legacy_tt_handler(priv,
- IWL_REDUCED_PERFORMANCE_THRESHOLD_2);
+ IWL_REDUCED_PERFORMANCE_THRESHOLD_2,
+ true);
else
- iwl_advance_tt_handler(priv, CT_KILL_EXIT_THRESHOLD);
+ iwl_advance_tt_handler(priv, CT_KILL_EXIT_THRESHOLD,
+ true);
}
}
@@ -735,9 +818,9 @@ static void iwl_bg_tt_work(struct work_struct *work)
temp = KELVIN_TO_CELSIUS(priv->temperature);
if (!priv->thermal_throttle.advanced_tt)
- iwl_legacy_tt_handler(priv, temp);
+ iwl_legacy_tt_handler(priv, temp, false);
else
- iwl_advance_tt_handler(priv, temp);
+ iwl_advance_tt_handler(priv, temp, false);
}
void iwl_tt_handler(struct iwl_priv *priv)
@@ -768,8 +851,12 @@ void iwl_tt_initialize(struct iwl_priv *priv)
tt->state = IWL_TI_0;
init_timer(&priv->thermal_throttle.ct_kill_exit_tm);
priv->thermal_throttle.ct_kill_exit_tm.data = (unsigned long)priv;
- priv->thermal_throttle.ct_kill_exit_tm.function = iwl_tt_check_exit_ct_kill;
-
+ priv->thermal_throttle.ct_kill_exit_tm.function =
+ iwl_tt_check_exit_ct_kill;
+ init_timer(&priv->thermal_throttle.ct_kill_waiting_tm);
+ priv->thermal_throttle.ct_kill_waiting_tm.data = (unsigned long)priv;
+ priv->thermal_throttle.ct_kill_waiting_tm.function =
+ iwl_tt_ready_for_ct_kill;
/* setup deferred ct kill work */
INIT_WORK(&priv->tt_work, iwl_bg_tt_work);
INIT_WORK(&priv->ct_enter, iwl_bg_ct_enter);
@@ -826,6 +913,8 @@ void iwl_tt_exit(struct iwl_priv *priv)
/* stop ct_kill_exit_tm timer if activated */
del_timer_sync(&priv->thermal_throttle.ct_kill_exit_tm);
+ /* stop ct_kill_waiting_tm timer if activated */
+ del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
cancel_work_sync(&priv->tt_work);
cancel_work_sync(&priv->ct_enter);
cancel_work_sync(&priv->ct_exit);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-15 02:36:52 +0300