diff options
| author | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2009-07-24 11:13:02 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-27 15:24:20 -0400 |
| commit | 39b73fb15e4704fd4d1e33688135810637f5f3fb (patch) | |
| tree | d0efed58f5a52ccdc19d8f133aa64af7a0691e70 /drivers/net/wireless/iwlwifi/iwl-agn.c | |
| parent | 672639de13c4db92ed6a47e68043a4317e219902 (diff) | |
iwlwifi: Thermal Throttling Management - Part 1
Part 1 of Thermal Throttling Management -
Thermal Throttling feature is used to put NIC into low power state when
driver detect the Radio temperature reach pre-defined threshold
Two Thermal Throttling Management Methods; this patch introduce the
Legacy Thermal Management:
IWL_TI_0: normal temperature, system power state
IWL_TI_1: high temperature detect, low power state
IWL_TI_2: higher temperature detected, lower power state
IWL_TI_CT_KILL: critical temperature detected, lowest power state
Once get into CT_KILL state, uCode go into sleep, driver will stop all
the active queues, then move to IWL_TI_CT_KILL state; also set up 5
seconds timer to toggle CSR flag, uCode wake up upon CSR flag change,
then measure the temperature.
If temperature is above CT_KILL exit threshold, uCode go backto sleep;
if temperature is below CT_KILL exit threshold, uCode send Card State
Notification response with appropriate CT_KILL status flag, and uCode
remain awake, Driver receive Card State Notification Response and update
the card temperature to the CT_KILL exit threshold.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 44c7f236a7a..23ae9914c84 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -637,7 +637,6 @@ static void iwl_rx_card_state_notif(struct iwl_priv *priv, struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); unsigned long status = priv->status; - unsigned long reg_flags; IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n", (flags & HW_CARD_DISABLED) ? "Kill" : "On", @@ -657,19 +656,12 @@ static void iwl_rx_card_state_notif(struct iwl_priv *priv, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); iwl_write_direct32(priv, HBUS_TARG_MBX_C, HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); - - } - - if (flags & RF_CARD_DISABLED) { - iwl_write32(priv, CSR_UCODE_DRV_GP1_SET, - CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); - iwl_read32(priv, CSR_UCODE_DRV_GP1); - spin_lock_irqsave(&priv->reg_lock, reg_flags); - if (!iwl_grab_nic_access(priv)) - iwl_release_nic_access(priv); - spin_unlock_irqrestore(&priv->reg_lock, reg_flags); } + if (flags & RF_CARD_DISABLED) + iwl_tt_enter_ct_kill(priv); } + if (!(flags & RF_CARD_DISABLED)) + iwl_tt_exit_ct_kill(priv); if (flags & HW_CARD_DISABLED) set_bit(STATUS_RF_KILL_HW, &priv->status); @@ -3015,6 +3007,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) test_bit(STATUS_RF_KILL_HW, &priv->status)); iwl_power_initialize(priv); + iwl_tt_initialize(priv); return 0; out_remove_sysfs: @@ -3067,6 +3060,8 @@ static void __devexit iwl_pci_remove(struct pci_dev *pdev) iwl_down(priv); } + iwl_tt_exit(priv); + /* make sure we flush any pending irq or * tasklet for the driver */ |