diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-power.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-power.c | 454 |
1 files changed, 0 insertions, 454 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c deleted file mode 100644 index 1eec18d909d..00000000000 --- a/drivers/net/wireless/iwlwifi/iwl-power.c +++ /dev/null @@ -1,454 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2007 - 2010 Intel Corporation. All rights reserved. - * - * Portions of this file are derived from the ipw3945 project, as well - * as portions of the ieee80211 subsystem header files. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA - * - * The full GNU General Public License is included in this distribution in the - * file called LICENSE. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - *****************************************************************************/ - - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> - -#include <net/mac80211.h> - -#include "iwl-eeprom.h" -#include "iwl-dev.h" -#include "iwl-core.h" -#include "iwl-io.h" -#include "iwl-commands.h" -#include "iwl-debug.h" -#include "iwl-power.h" - -/* - * Setting power level allows the card to go to sleep when not busy. - * - * We calculate a sleep command based on the required latency, which - * we get from mac80211. In order to handle thermal throttling, we can - * also use pre-defined power levels. - */ - -/* - * For now, keep using power level 1 instead of automatically - * adjusting ... - */ -bool no_sleep_autoadjust = true; -module_param(no_sleep_autoadjust, bool, S_IRUGO); -MODULE_PARM_DESC(no_sleep_autoadjust, - "don't automatically adjust sleep level " - "according to maximum network latency"); - -/* - * This defines the old power levels. They are still used by default - * (level 1) and for thermal throttle (levels 3 through 5) - */ - -struct iwl_power_vec_entry { - struct iwl_powertable_cmd cmd; - u8 no_dtim; /* number of skip dtim */ -}; - -#define IWL_DTIM_RANGE_0_MAX 2 -#define IWL_DTIM_RANGE_1_MAX 10 - -#define NOSLP cpu_to_le16(0), 0, 0 -#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0 -#define ASLP (IWL_POWER_POWER_SAVE_ENA_MSK | \ - IWL_POWER_POWER_MANAGEMENT_ENA_MSK | \ - IWL_POWER_ADVANCE_PM_ENA_MSK) -#define ASLP_TOUT(T) cpu_to_le32(T) -#define TU_TO_USEC 1024 -#define SLP_TOUT(T) cpu_to_le32((T) * TU_TO_USEC) -#define SLP_VEC(X0, X1, X2, X3, X4) {cpu_to_le32(X0), \ - cpu_to_le32(X1), \ - cpu_to_le32(X2), \ - cpu_to_le32(X3), \ - 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, 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}, - {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(2, 2, 4, 6, 0xFF)}, 2} -}; - - -/* 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, 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}, - {{SLP, SLP_TOUT(50), SLP_TOUT(100), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0}, - {{SLP, SLP_TOUT(50), SLP_TOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0}, - {{SLP, SLP_TOUT(25), SLP_TOUT(25), SLP_VEC(4, 7, 10, 10, 0xFF)}, 0} -}; - -/* advance power management */ -/* DTIM 0 - 2 */ -static const struct iwl_power_vec_entry apm_range_0[IWL_POWER_NUM] = { - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 6, 8, 0xFF), ASLP_TOUT(2)}, 2} -}; - - -/* 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 apm_range_1[IWL_POWER_NUM] = { - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 6, 8, 0xFF), 0}, 2} -}; - -/* for DTIM period > IWL_DTIM_RANGE_1_MAX */ -/* DTIM 11 - */ -static const struct iwl_power_vec_entry apm_range_2[IWL_POWER_NUM] = { - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 4, 6, 0xFF), 0}, 0}, - {{ASLP, 0, 0, ASLP_TOUT(50), ASLP_TOUT(50), - SLP_VEC(1, 2, 6, 8, 0xFF), ASLP_TOUT(2)}, 2} -}; - -static void iwl_static_sleep_cmd(struct iwl_priv *priv, - struct iwl_powertable_cmd *cmd, - enum iwl_power_level lvl, int period) -{ - const struct iwl_power_vec_entry *table; - int max_sleep[IWL_POWER_VEC_SIZE] = { 0 }; - int i; - u8 skip; - u32 slp_itrvl; - - if (priv->cfg->adv_pm) { - table = apm_range_2; - if (period <= IWL_DTIM_RANGE_1_MAX) - table = apm_range_1; - if (period <= IWL_DTIM_RANGE_0_MAX) - table = apm_range_0; - } else { - table = range_2; - if (period <= IWL_DTIM_RANGE_1_MAX) - table = range_1; - if (period <= IWL_DTIM_RANGE_0_MAX) - table = range_0; - } - - BUG_ON(lvl < 0 || lvl >= IWL_POWER_NUM); - - *cmd = table[lvl].cmd; - - if (period == 0) { - skip = 0; - period = 1; - for (i = 0; i < IWL_POWER_VEC_SIZE; i++) - max_sleep[i] = 1; - - } else { - 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; - } - - 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 - cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK; - - if (priv->cfg->base_params->shadow_reg_enable) - cmd->flags |= IWL_POWER_SHADOW_REG_ENA; - else - cmd->flags &= ~IWL_POWER_SHADOW_REG_ENA; - - if (priv->cfg->bt_params && - priv->cfg->bt_params->advanced_bt_coexist) { - if (!priv->cfg->bt_params->bt_sco_disable) - cmd->flags |= IWL_POWER_BT_SCO_ENA; - else - cmd->flags &= ~IWL_POWER_BT_SCO_ENA; - } - - - 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); -} - -static void iwl_power_sleep_cam_cmd(struct iwl_priv *priv, - struct iwl_powertable_cmd *cmd) -{ - memset(cmd, 0, sizeof(*cmd)); - - if (priv->power_data.pci_pm) - cmd->flags |= IWL_POWER_PCI_PM_MSK; - - IWL_DEBUG_POWER(priv, "Sleep command for CAM\n"); -} - -static void iwl_power_fill_sleep_cmd(struct iwl_priv *priv, - struct iwl_powertable_cmd *cmd, - int dynps_ms, int wakeup_period) -{ - /* - * These are the original power level 3 sleep successions. The - * device may behave better with such succession and was also - * only tested with that. Just like the original sleep commands, - * also adjust the succession here to the wakeup_period below. - * The ranges are the same as for the sleep commands, 0-2, 3-9 - * and >10, which is selected based on the DTIM interval for - * the sleep index but here we use the wakeup period since that - * is what we need to do for the latency requirements. - */ - static const u8 slp_succ_r0[IWL_POWER_VEC_SIZE] = { 2, 2, 2, 2, 2 }; - static const u8 slp_succ_r1[IWL_POWER_VEC_SIZE] = { 2, 4, 6, 7, 9 }; - static const u8 slp_succ_r2[IWL_POWER_VEC_SIZE] = { 2, 7, 9, 9, 0xFF }; - const u8 *slp_succ = slp_succ_r0; - int i; - - if (wakeup_period > IWL_DTIM_RANGE_0_MAX) - slp_succ = slp_succ_r1; - if (wakeup_period > IWL_DTIM_RANGE_1_MAX) - slp_succ = slp_succ_r2; - - memset(cmd, 0, sizeof(*cmd)); - - cmd->flags = IWL_POWER_DRIVER_ALLOW_SLEEP_MSK | - IWL_POWER_FAST_PD; /* no use seeing frames for others */ - - if (priv->power_data.pci_pm) - cmd->flags |= IWL_POWER_PCI_PM_MSK; - - if (priv->cfg->base_params->shadow_reg_enable) - cmd->flags |= IWL_POWER_SHADOW_REG_ENA; - else - cmd->flags &= ~IWL_POWER_SHADOW_REG_ENA; - - if (priv->cfg->bt_params && - priv->cfg->bt_params->advanced_bt_coexist) { - if (!priv->cfg->bt_params->bt_sco_disable) - cmd->flags |= IWL_POWER_BT_SCO_ENA; - else - cmd->flags &= ~IWL_POWER_BT_SCO_ENA; - } - - cmd->rx_data_timeout = cpu_to_le32(1000 * dynps_ms); - cmd->tx_data_timeout = cpu_to_le32(1000 * dynps_ms); - - for (i = 0; i < IWL_POWER_VEC_SIZE; i++) - cmd->sleep_interval[i] = - cpu_to_le32(min_t(int, slp_succ[i], wakeup_period)); - - IWL_DEBUG_POWER(priv, "Automatic sleep command\n"); -} - -static int iwl_set_power(struct iwl_priv *priv, struct iwl_powertable_cmd *cmd) -{ - IWL_DEBUG_POWER(priv, "Sending power/sleep command\n"); - IWL_DEBUG_POWER(priv, "Flags value = 0x%08X\n", cmd->flags); - IWL_DEBUG_POWER(priv, "Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout)); - IWL_DEBUG_POWER(priv, "Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout)); - IWL_DEBUG_POWER(priv, "Sleep interval vector = { %d , %d , %d , %d , %d }\n", - le32_to_cpu(cmd->sleep_interval[0]), - le32_to_cpu(cmd->sleep_interval[1]), - le32_to_cpu(cmd->sleep_interval[2]), - le32_to_cpu(cmd->sleep_interval[3]), - le32_to_cpu(cmd->sleep_interval[4])); - - return iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, - sizeof(struct iwl_powertable_cmd), cmd); -} - -static void iwl_power_build_cmd(struct iwl_priv *priv, - struct iwl_powertable_cmd *cmd) -{ - bool enabled = priv->hw->conf.flags & IEEE80211_CONF_PS; - int dtimper; - - dtimper = priv->hw->conf.ps_dtim_period ?: 1; - - if (priv->cfg->base_params->broken_powersave) - iwl_power_sleep_cam_cmd(priv, cmd); - else if (priv->cfg->base_params->supports_idle && - priv->hw->conf.flags & IEEE80211_CONF_IDLE) - iwl_static_sleep_cmd(priv, cmd, IWL_POWER_INDEX_5, 20); - else if (priv->cfg->ops->lib->tt_ops.lower_power_detection && - priv->cfg->ops->lib->tt_ops.tt_power_mode && - priv->cfg->ops->lib->tt_ops.lower_power_detection(priv)) { - /* in thermal throttling low power state */ - iwl_static_sleep_cmd(priv, cmd, - priv->cfg->ops->lib->tt_ops.tt_power_mode(priv), dtimper); - } else if (!enabled) - iwl_power_sleep_cam_cmd(priv, cmd); - else if (priv->power_data.debug_sleep_level_override >= 0) - iwl_static_sleep_cmd(priv, cmd, - priv->power_data.debug_sleep_level_override, - dtimper); - else if (no_sleep_autoadjust) - iwl_static_sleep_cmd(priv, cmd, IWL_POWER_INDEX_1, dtimper); - else - iwl_power_fill_sleep_cmd(priv, cmd, - priv->hw->conf.dynamic_ps_timeout, - priv->hw->conf.max_sleep_period); -} - -int iwl_power_set_mode(struct iwl_priv *priv, struct iwl_powertable_cmd *cmd, - bool force) -{ - int ret; - bool update_chains; - - lockdep_assert_held(&priv->mutex); - - /* Don't update the RX chain when chain noise calibration is running */ - update_chains = priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE || - priv->chain_noise_data.state == IWL_CHAIN_NOISE_ALIVE; - - if (!memcmp(&priv->power_data.sleep_cmd, cmd, sizeof(*cmd)) && !force) - return 0; - - if (!iwl_is_ready_rf(priv)) - return -EIO; - - /* scan complete use sleep_power_next, need to be updated */ - memcpy(&priv->power_data.sleep_cmd_next, cmd, sizeof(*cmd)); - if (test_bit(STATUS_SCANNING, &priv->status) && !force) { - IWL_DEBUG_INFO(priv, "Defer power set mode while scanning\n"); - return 0; - } - - if (cmd->flags & IWL_POWER_DRIVER_ALLOW_SLEEP_MSK) - set_bit(STATUS_POWER_PMI, &priv->status); - - ret = iwl_set_power(priv, cmd); - if (!ret) { - if (!(cmd->flags & IWL_POWER_DRIVER_ALLOW_SLEEP_MSK)) - clear_bit(STATUS_POWER_PMI, &priv->status); - - if (priv->cfg->ops->lib->update_chain_flags && update_chains) - priv->cfg->ops->lib->update_chain_flags(priv); - else if (priv->cfg->ops->lib->update_chain_flags) - IWL_DEBUG_POWER(priv, - "Cannot update the power, chain noise " - "calibration running: %d\n", - priv->chain_noise_data.state); - - memcpy(&priv->power_data.sleep_cmd, cmd, sizeof(*cmd)); - } else - IWL_ERR(priv, "set power fail, ret = %d", ret); - - return ret; -} -EXPORT_SYMBOL(iwl_power_set_mode); - -int iwl_power_update_mode(struct iwl_priv *priv, bool force) -{ - struct iwl_powertable_cmd cmd; - - iwl_power_build_cmd(priv, &cmd); - return iwl_power_set_mode(priv, &cmd, force); -} -EXPORT_SYMBOL(iwl_power_update_mode); - -/* initialize to default */ -void iwl_power_initialize(struct iwl_priv *priv) -{ - u16 lctl = iwl_pcie_link_ctl(priv); - - priv->power_data.pci_pm = !(lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN); - - priv->power_data.debug_sleep_level_override = -1; - - memset(&priv->power_data.sleep_cmd, 0, - sizeof(priv->power_data.sleep_cmd)); -} -EXPORT_SYMBOL(iwl_power_initialize); |