You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
278 lines
8.7 KiB
278 lines
8.7 KiB
/******************************************************************************
|
|
*
|
|
* Copyright(c) 2007 - 2009 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/init.h>
|
|
|
|
#include <net/mac80211.h>
|
|
|
|
#include "iwl-eeprom.h"
|
|
#include "iwl-dev.h"
|
|
#include "iwl-core.h"
|
|
#include "iwl-commands.h"
|
|
#include "iwl-debug.h"
|
|
#include "iwl-power.h"
|
|
|
|
/*
|
|
* Setting power level allow the card to go to sleep when not busy.
|
|
*
|
|
* The power level is set to INDEX_1 (the least deep state) by
|
|
* default, and will, in the future, be the deepest state unless
|
|
* otherwise required by pm_qos network latency requirements.
|
|
*
|
|
* Using INDEX_1 without pm_qos is ok because mac80211 will disable
|
|
* PS when even checking every beacon for the TIM bit would exceed
|
|
* the required latency.
|
|
*/
|
|
|
|
#define IWL_POWER_RANGE_0_MAX (2)
|
|
#define IWL_POWER_RANGE_1_MAX (10)
|
|
|
|
|
|
#define NOSLP cpu_to_le16(0), 0, 0
|
|
#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
|
|
#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_POWER_RANGE_0_MAX */
|
|
static const struct iwl_power_vec_entry range_0[IWL_POWER_NUM] = {
|
|
{{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
|
|
{{SLP, SLP_TOUT(200), SLP_TOUT(500), SLP_VEC(1, 2, 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_POWER_RANGE_0_MAX + 1 through IWL_POWER_RANGE_1_MAX */
|
|
static const struct iwl_power_vec_entry range_1[IWL_POWER_NUM] = {
|
|
{{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
|
|
{{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}
|
|
};
|
|
|
|
/* for DTIM period > IWL_POWER_RANGE_1_MAX */
|
|
static const struct iwl_power_vec_entry range_2[IWL_POWER_NUM] = {
|
|
{{NOSLP, SLP_TOUT(0), SLP_TOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
|
|
{{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}
|
|
};
|
|
|
|
|
|
/* set card power command */
|
|
static int iwl_set_power(struct iwl_priv *priv, void *cmd)
|
|
{
|
|
return iwl_send_cmd_pdu(priv, POWER_TABLE_CMD,
|
|
sizeof(struct iwl_powertable_cmd), cmd);
|
|
}
|
|
|
|
/* initialize to default */
|
|
static void iwl_power_init_handle(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_power_mgr *pow_data;
|
|
int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_NUM;
|
|
struct iwl_powertable_cmd *cmd;
|
|
int i;
|
|
u16 lctl;
|
|
|
|
IWL_DEBUG_POWER(priv, "Initialize power \n");
|
|
|
|
pow_data = &priv->power_data;
|
|
|
|
memset(pow_data, 0, sizeof(*pow_data));
|
|
|
|
memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
|
|
memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
|
|
memcpy(&pow_data->pwr_range_2[0], &range_2[0], size);
|
|
|
|
lctl = iwl_pcie_link_ctl(priv);
|
|
|
|
IWL_DEBUG_POWER(priv, "adjust power command flags\n");
|
|
|
|
for (i = 0; i < IWL_POWER_NUM; i++) {
|
|
cmd = &pow_data->pwr_range_0[i].cmd;
|
|
|
|
if (lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN)
|
|
cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
|
|
else
|
|
cmd->flags |= IWL_POWER_PCI_PM_MSK;
|
|
}
|
|
}
|
|
|
|
/* adjust power command according to DTIM period and power level*/
|
|
static int iwl_update_power_cmd(struct iwl_priv *priv,
|
|
struct iwl_powertable_cmd *cmd, u16 mode)
|
|
{
|
|
struct iwl_power_vec_entry *range;
|
|
struct iwl_power_mgr *pow_data;
|
|
int i;
|
|
u32 max_sleep = 0;
|
|
u8 period;
|
|
bool skip;
|
|
|
|
if (mode > IWL_POWER_INDEX_5) {
|
|
IWL_DEBUG_POWER(priv, "Error invalid power mode \n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
pow_data = &priv->power_data;
|
|
|
|
if (pow_data->dtim_period <= IWL_POWER_RANGE_0_MAX)
|
|
range = &pow_data->pwr_range_0[0];
|
|
else if (pow_data->dtim_period <= IWL_POWER_RANGE_1_MAX)
|
|
range = &pow_data->pwr_range_1[0];
|
|
else
|
|
range = &pow_data->pwr_range_2[0];
|
|
|
|
period = pow_data->dtim_period;
|
|
memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
|
|
|
|
if (period == 0) {
|
|
period = 1;
|
|
skip = false;
|
|
} else {
|
|
skip = !!range[mode].no_dtim;
|
|
}
|
|
|
|
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;
|
|
cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
|
|
} else {
|
|
max_sleep = period;
|
|
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);
|
|
|
|
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 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* compute the final power mode index
|
|
*/
|
|
int iwl_power_update_mode(struct iwl_priv *priv, bool force)
|
|
{
|
|
struct iwl_power_mgr *setting = &(priv->power_data);
|
|
int ret = 0;
|
|
u16 uninitialized_var(final_mode);
|
|
bool update_chains;
|
|
|
|
/* 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;
|
|
|
|
final_mode = priv->power_data.user_power_setting;
|
|
|
|
if (setting->power_disabled)
|
|
final_mode = IWL_POWER_MODE_CAM;
|
|
|
|
if (iwl_is_ready_rf(priv) &&
|
|
((setting->power_mode != final_mode) || force)) {
|
|
struct iwl_powertable_cmd cmd;
|
|
|
|
if (final_mode != IWL_POWER_MODE_CAM)
|
|
set_bit(STATUS_POWER_PMI, &priv->status);
|
|
|
|
iwl_update_power_cmd(priv, &cmd, final_mode);
|
|
cmd.keep_alive_beacons = 0;
|
|
|
|
if (final_mode == IWL_POWER_INDEX_5)
|
|
cmd.flags |= IWL_POWER_FAST_PD;
|
|
|
|
ret = iwl_set_power(priv, &cmd);
|
|
|
|
if (final_mode == IWL_POWER_MODE_CAM)
|
|
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
|
|
IWL_DEBUG_POWER(priv, "Cannot update the power, chain noise "
|
|
"calibration running: %d\n",
|
|
priv->chain_noise_data.state);
|
|
if (!ret)
|
|
setting->power_mode = final_mode;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwl_power_update_mode);
|
|
|
|
/* set user_power_setting */
|
|
int iwl_power_set_user_mode(struct iwl_priv *priv, u16 mode)
|
|
{
|
|
if (mode >= IWL_POWER_NUM)
|
|
return -EINVAL;
|
|
|
|
priv->power_data.user_power_setting = mode;
|
|
|
|
return iwl_power_update_mode(priv, 0);
|
|
}
|
|
EXPORT_SYMBOL(iwl_power_set_user_mode);
|
|
|
|
/* initialize to default */
|
|
void iwl_power_initialize(struct iwl_priv *priv)
|
|
{
|
|
iwl_power_init_handle(priv);
|
|
priv->power_data.user_power_setting = IWL_POWER_INDEX_1;
|
|
/* default to disabled until mac80211 says otherwise */
|
|
priv->power_data.power_disabled = 1;
|
|
}
|
|
EXPORT_SYMBOL(iwl_power_initialize);
|
|
|