diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-power.c')
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-power.c | 232 |
1 files changed, 174 insertions, 58 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c index 60be976afff..8ccc0bb1d9e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-power.c +++ b/drivers/net/wireless/iwlwifi/iwl-power.c @@ -66,7 +66,7 @@ MODULE_PARM_DESC(no_sleep_autoadjust, struct iwl_power_vec_entry { struct iwl_powertable_cmd cmd; - u8 no_dtim; + u8 no_dtim; /* number of skip dtim */ }; #define IWL_DTIM_RANGE_0_MAX 2 @@ -83,8 +83,9 @@ struct iwl_power_vec_entry { cpu_to_le32(X4)} /* default power management (not Tx power) table values */ /* for DTIM period 0 through IWL_DTIM_RANGE_0_MAX */ +/* DTIM 0 - 2 */ static const struct iwl_power_vec_entry range_0[IWL_POWER_NUM] = { - {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0}, + {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 1, 2, 2, 0xFF)}, 0}, {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 2, 2, 0xFF)}, 0}, {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 2, 2, 2, 0xFF)}, 0}, {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 2, 4, 4, 0xFF)}, 1}, @@ -93,15 +94,17 @@ static const struct iwl_power_vec_entry range_0[IWL_POWER_NUM] = { /* for DTIM period IWL_DTIM_RANGE_0_MAX + 1 through IWL_DTIM_RANGE_1_MAX */ +/* DTIM 3 - 10 */ static const struct iwl_power_vec_entry range_1[IWL_POWER_NUM] = { {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0}, {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(1, 2, 3, 4, 7)}, 0}, {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 4, 6, 7, 9)}, 0}, {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 4, 6, 9, 10)}, 1}, - {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 4, 7, 10, 10)}, 2} + {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 4, 6, 10, 10)}, 2} }; /* for DTIM period > IWL_DTIM_RANGE_1_MAX */ +/* DTIM 11 - */ static const struct iwl_power_vec_entry range_2[IWL_POWER_NUM] = { {{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 3, 4, 0xFF)}, 0}, {{SLP, SLP_TOUT(200), SLP_TOUT(300), SLP_VEC(2, 4, 6, 7, 0xFF)}, 0}, @@ -115,13 +118,15 @@ static void iwl_static_sleep_cmd(struct iwl_priv *priv, enum iwl_power_level lvl, int period) { const struct iwl_power_vec_entry *table; - int max_sleep, i; - bool skip; + int max_sleep[IWL_POWER_VEC_SIZE] = { 0 }; + int i; + u8 skip; + u32 slp_itrvl; table = range_2; - if (period < IWL_DTIM_RANGE_1_MAX) + if (period <= IWL_DTIM_RANGE_1_MAX) table = range_1; - if (period < IWL_DTIM_RANGE_0_MAX) + if (period <= IWL_DTIM_RANGE_0_MAX) table = range_0; BUG_ON(lvl < 0 || lvl >= IWL_POWER_NUM); @@ -129,34 +134,60 @@ static void iwl_static_sleep_cmd(struct iwl_priv *priv, *cmd = table[lvl].cmd; if (period == 0) { - skip = false; + skip = 0; period = 1; + for (i = 0; i < IWL_POWER_VEC_SIZE; i++) + max_sleep[i] = 1; + } else { - skip = !!table[lvl].no_dtim; + skip = table[lvl].no_dtim; + for (i = 0; i < IWL_POWER_VEC_SIZE; i++) + max_sleep[i] = le32_to_cpu(cmd->sleep_interval[i]); + max_sleep[IWL_POWER_VEC_SIZE - 1] = skip + 1; } - if (skip) { - __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]; - max_sleep = le32_to_cpu(slp_itrvl); - if (max_sleep == 0xFF) - max_sleep = period * (skip + 1); - else if (max_sleep > period) - max_sleep = (le32_to_cpu(slp_itrvl) / period) * period; + slp_itrvl = le32_to_cpu(cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]); + /* figure out the listen interval based on dtim period and skip */ + if (slp_itrvl == 0xFF) + cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1] = + cpu_to_le32(period * (skip + 1)); + + slp_itrvl = le32_to_cpu(cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]); + if (slp_itrvl > period) + cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1] = + cpu_to_le32((slp_itrvl / period) * period); + + if (skip) cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK; - } else { - max_sleep = period; + else cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK; - } - for (i = 0; i < IWL_POWER_VEC_SIZE; i++) - if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep) - cmd->sleep_interval[i] = cpu_to_le32(max_sleep); + slp_itrvl = le32_to_cpu(cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1]); + if (slp_itrvl > IWL_CONN_MAX_LISTEN_INTERVAL) + cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1] = + cpu_to_le32(IWL_CONN_MAX_LISTEN_INTERVAL); + + /* enforce max sleep interval */ + for (i = IWL_POWER_VEC_SIZE - 1; i >= 0 ; i--) { + if (le32_to_cpu(cmd->sleep_interval[i]) > + (max_sleep[i] * period)) + cmd->sleep_interval[i] = + cpu_to_le32(max_sleep[i] * period); + if (i != (IWL_POWER_VEC_SIZE - 1)) { + if (le32_to_cpu(cmd->sleep_interval[i]) > + le32_to_cpu(cmd->sleep_interval[i+1])) + cmd->sleep_interval[i] = + cmd->sleep_interval[i+1]; + } + } if (priv->power_data.pci_pm) cmd->flags |= IWL_POWER_PCI_PM_MSK; else cmd->flags &= ~IWL_POWER_PCI_PM_MSK; + IWL_DEBUG_POWER(priv, "numSkipDtim = %u, dtimPeriod = %d\n", + skip, period); IWL_DEBUG_POWER(priv, "Sleep command for index %d\n", lvl + 1); } @@ -165,26 +196,26 @@ 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 +325,9 @@ 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 +382,23 @@ 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 +423,7 @@ 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 +461,7 @@ 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 +485,33 @@ 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, CMD_SYNC, false); + /* 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 +525,7 @@ 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 +554,8 @@ 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 +576,28 @@ 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 +624,13 @@ 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 +675,8 @@ 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 +708,17 @@ 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 +726,15 @@ 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 +771,11 @@ 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 +802,18 @@ 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 +849,9 @@ 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) @@ -768,16 +882,18 @@ 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); INIT_WORK(&priv->ct_exit, iwl_bg_ct_exit); - switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) { - case CSR_HW_REV_TYPE_6x00: - case CSR_HW_REV_TYPE_6x50: + if (priv->cfg->adv_thermal_throttle) { IWL_DEBUG_POWER(priv, "Advanced Thermal Throttling\n"); tt->restriction = kzalloc(sizeof(struct iwl_tt_restriction) * IWL_TI_STATE_MAX, GFP_KERNEL); @@ -810,11 +926,9 @@ void iwl_tt_initialize(struct iwl_priv *priv) &restriction_range[0], size); priv->thermal_throttle.advanced_tt = true; } - break; - default: + } else { IWL_DEBUG_POWER(priv, "Legacy Thermal Throttling\n"); priv->thermal_throttle.advanced_tt = false; - break; } } EXPORT_SYMBOL(iwl_tt_initialize); @@ -826,6 +940,8 @@ 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); |