system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-27 13:48:49 +00:00
Code Issues Packages Projects Releases Wiki Activity
linux/drivers/net/wireless/iwlwifi/dvm/devices.c
Johannes Berg 8f7b8db6e0 iwlwifi: fix 6000 series channel switch command 
The channel switch command for 6000 series devices
is larger than the maximum inline command size of
320 bytes. The command is therefore refused with a
warning. Fix this by allocating the command and
using the NOCOPY mechanism.

Cc: stable@kernel.org
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-16 16:28:36 +02:00

598 lines
16 KiB
C
Raw Blame History

/******************************************************************************
*
* Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
*
* 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
*
*****************************************************************************/
/*
* DVM device-specific data & functions
*/
#include "iwl-io.h"
#include "iwl-prph.h"
#include "iwl-eeprom-parse.h"
#include "agn.h"
#include "dev.h"
#include "commands.h"
/*
* 1000 series
* ===========
*/
/*
* For 1000, use advance thermal throttling critical temperature threshold,
* but legacy thermal management implementation for now.
* This is for the reason of 1000 uCode using advance thermal throttling API
* but not implement ct_kill_exit based on ct_kill exit temperature
* so the thermal throttling will still based on legacy thermal throttling
* management.
* The code here need to be modified once 1000 uCode has the advanced thermal
* throttling algorithm in place
*/
static void iwl1000_set_ct_threshold(struct iwl_priv *priv)
{
/* want Celsius */
priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
}
/* NIC configuration for 1000 series */
static void iwl1000_nic_config(struct iwl_priv *priv)
{
/* Setting digital SVR for 1000 card to 1.32V */
/* locking is acquired in iwl_set_bits_mask_prph() function */
iwl_set_bits_mask_prph(priv->trans, APMG_DIGITAL_SVR_REG,
APMG_SVR_DIGITAL_VOLTAGE_1_32,
~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
}
/**
* iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time
* @priv -- pointer to iwl_priv data structure
* @tsf_bits -- number of bits need to shift for masking)
*/
static inline u32 iwl_beacon_time_mask_low(struct iwl_priv *priv,
u16 tsf_bits)
{
return (1 << tsf_bits) - 1;
}
/**
* iwl_beacon_time_mask_high - mask of higher 32 bit of beacon time
* @priv -- pointer to iwl_priv data structure
* @tsf_bits -- number of bits need to shift for masking)
*/
static inline u32 iwl_beacon_time_mask_high(struct iwl_priv *priv,
u16 tsf_bits)
{
return ((1 << (32 - tsf_bits)) - 1) << tsf_bits;
}
/*
* extended beacon time format
* time in usec will be changed into a 32-bit value in extended:internal format
* the extended part is the beacon counts
* the internal part is the time in usec within one beacon interval
*/
static u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec,
u32 beacon_interval)
{
u32 quot;
u32 rem;
u32 interval = beacon_interval * TIME_UNIT;
if (!interval || !usec)
return 0;
quot = (usec / interval) &
(iwl_beacon_time_mask_high(priv, IWLAGN_EXT_BEACON_TIME_POS) >>
IWLAGN_EXT_BEACON_TIME_POS);
rem = (usec % interval) & iwl_beacon_time_mask_low(priv,
IWLAGN_EXT_BEACON_TIME_POS);
return (quot << IWLAGN_EXT_BEACON_TIME_POS) + rem;
}
/* base is usually what we get from ucode with each received frame,
* the same as HW timer counter counting down
*/
static __le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base,
u32 addon, u32 beacon_interval)
{
u32 base_low = base & iwl_beacon_time_mask_low(priv,
IWLAGN_EXT_BEACON_TIME_POS);
u32 addon_low = addon & iwl_beacon_time_mask_low(priv,
IWLAGN_EXT_BEACON_TIME_POS);
u32 interval = beacon_interval * TIME_UNIT;
u32 res = (base & iwl_beacon_time_mask_high(priv,
IWLAGN_EXT_BEACON_TIME_POS)) +
(addon & iwl_beacon_time_mask_high(priv,
IWLAGN_EXT_BEACON_TIME_POS));
if (base_low > addon_low)
res += base_low - addon_low;
else if (base_low < addon_low) {
res += interval + base_low - addon_low;
res += (1 << IWLAGN_EXT_BEACON_TIME_POS);
} else
res += (1 << IWLAGN_EXT_BEACON_TIME_POS);
return cpu_to_le32(res);
}
static const struct iwl_sensitivity_ranges iwl1000_sensitivity = {
.min_nrg_cck = 95,
.auto_corr_min_ofdm = 90,
.auto_corr_min_ofdm_mrc = 170,
.auto_corr_min_ofdm_x1 = 120,
.auto_corr_min_ofdm_mrc_x1 = 240,
.auto_corr_max_ofdm = 120,
.auto_corr_max_ofdm_mrc = 210,
.auto_corr_max_ofdm_x1 = 155,
.auto_corr_max_ofdm_mrc_x1 = 290,
.auto_corr_min_cck = 125,
.auto_corr_max_cck = 200,
.auto_corr_min_cck_mrc = 170,
.auto_corr_max_cck_mrc = 400,
.nrg_th_cck = 95,
.nrg_th_ofdm = 95,
.barker_corr_th_min = 190,
.barker_corr_th_min_mrc = 390,
.nrg_th_cca = 62,
};
static void iwl1000_hw_set_hw_params(struct iwl_priv *priv)
{
iwl1000_set_ct_threshold(priv);
/* Set initial sensitivity parameters */
priv->hw_params.sens = &iwl1000_sensitivity;
}
struct iwl_lib_ops iwl1000_lib = {
.set_hw_params = iwl1000_hw_set_hw_params,
.nic_config = iwl1000_nic_config,
.temperature = iwlagn_temperature,
};
/*
* 2000 series
* ===========
*/
static void iwl2000_set_ct_threshold(struct iwl_priv *priv)
{
/* want Celsius */
priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD;
priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
}
/* NIC configuration for 2000 series */
static void iwl2000_nic_config(struct iwl_priv *priv)
{
iwl_set_bit(priv->trans, CSR_GP_DRIVER_REG,
CSR_GP_DRIVER_REG_BIT_RADIO_IQ_INVER);
}
static const struct iwl_sensitivity_ranges iwl2000_sensitivity = {
.min_nrg_cck = 97,
.auto_corr_min_ofdm = 80,
.auto_corr_min_ofdm_mrc = 128,
.auto_corr_min_ofdm_x1 = 105,
.auto_corr_min_ofdm_mrc_x1 = 192,
.auto_corr_max_ofdm = 145,
.auto_corr_max_ofdm_mrc = 232,
.auto_corr_max_ofdm_x1 = 110,
.auto_corr_max_ofdm_mrc_x1 = 232,
.auto_corr_min_cck = 125,
.auto_corr_max_cck = 175,
.auto_corr_min_cck_mrc = 160,
.auto_corr_max_cck_mrc = 310,
.nrg_th_cck = 97,
.nrg_th_ofdm = 100,
.barker_corr_th_min = 190,
.barker_corr_th_min_mrc = 390,
.nrg_th_cca = 62,
};
static void iwl2000_hw_set_hw_params(struct iwl_priv *priv)
{
iwl2000_set_ct_threshold(priv);
/* Set initial sensitivity parameters */
priv->hw_params.sens = &iwl2000_sensitivity;
}
struct iwl_lib_ops iwl2000_lib = {
.set_hw_params = iwl2000_hw_set_hw_params,
.nic_config = iwl2000_nic_config,
.temperature = iwlagn_temperature,
};
struct iwl_lib_ops iwl2030_lib = {
.set_hw_params = iwl2000_hw_set_hw_params,
.nic_config = iwl2000_nic_config,
.temperature = iwlagn_temperature,
};
/*
* 5000 series
* ===========
*/
/* NIC configuration for 5000 series */
static const struct iwl_sensitivity_ranges iwl5000_sensitivity = {
.min_nrg_cck = 100,
.auto_corr_min_ofdm = 90,
.auto_corr_min_ofdm_mrc = 170,
.auto_corr_min_ofdm_x1 = 105,
.auto_corr_min_ofdm_mrc_x1 = 220,
.auto_corr_max_ofdm = 120,
.auto_corr_max_ofdm_mrc = 210,
.auto_corr_max_ofdm_x1 = 120,
.auto_corr_max_ofdm_mrc_x1 = 240,
.auto_corr_min_cck = 125,
.auto_corr_max_cck = 200,
.auto_corr_min_cck_mrc = 200,
.auto_corr_max_cck_mrc = 400,
.nrg_th_cck = 100,
.nrg_th_ofdm = 100,
.barker_corr_th_min = 190,
.barker_corr_th_min_mrc = 390,
.nrg_th_cca = 62,
};
static struct iwl_sensitivity_ranges iwl5150_sensitivity = {
.min_nrg_cck = 95,
.auto_corr_min_ofdm = 90,
.auto_corr_min_ofdm_mrc = 170,
.auto_corr_min_ofdm_x1 = 105,
.auto_corr_min_ofdm_mrc_x1 = 220,
.auto_corr_max_ofdm = 120,
.auto_corr_max_ofdm_mrc = 210,
/* max = min for performance bug in 5150 DSP */
.auto_corr_max_ofdm_x1 = 105,
.auto_corr_max_ofdm_mrc_x1 = 220,
.auto_corr_min_cck = 125,
.auto_corr_max_cck = 200,
.auto_corr_min_cck_mrc = 170,
.auto_corr_max_cck_mrc = 400,
.nrg_th_cck = 95,
.nrg_th_ofdm = 95,
.barker_corr_th_min = 190,
.barker_corr_th_min_mrc = 390,
.nrg_th_cca = 62,
};
#define IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF (-5)
static s32 iwl_temp_calib_to_offset(struct iwl_priv *priv)
{
u16 temperature, voltage;
temperature = le16_to_cpu(priv->eeprom_data->kelvin_temperature);
voltage = le16_to_cpu(priv->eeprom_data->kelvin_voltage);
/* offset = temp - volt / coeff */
return (s32)(temperature -
voltage / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF);
}
static void iwl5150_set_ct_threshold(struct iwl_priv *priv)
{
const s32 volt2temp_coef = IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF;
s32 threshold = (s32)CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY) -
iwl_temp_calib_to_offset(priv);
priv->hw_params.ct_kill_threshold = threshold * volt2temp_coef;
}
static void iwl5000_set_ct_threshold(struct iwl_priv *priv)
{
/* want Celsius */
priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD_LEGACY;
}
static void iwl5000_hw_set_hw_params(struct iwl_priv *priv)
{
iwl5000_set_ct_threshold(priv);
/* Set initial sensitivity parameters */
priv->hw_params.sens = &iwl5000_sensitivity;
}
static void iwl5150_hw_set_hw_params(struct iwl_priv *priv)
{
iwl5150_set_ct_threshold(priv);
/* Set initial sensitivity parameters */
priv->hw_params.sens = &iwl5150_sensitivity;
}
static void iwl5150_temperature(struct iwl_priv *priv)
{
u32 vt = 0;
s32 offset = iwl_temp_calib_to_offset(priv);
vt = le32_to_cpu(priv->statistics.common.temperature);
vt = vt / IWL_5150_VOLTAGE_TO_TEMPERATURE_COEFF + offset;
/* now vt hold the temperature in Kelvin */
priv->temperature = KELVIN_TO_CELSIUS(vt);
iwl_tt_handler(priv);
}
static int iwl5000_hw_channel_switch(struct iwl_priv *priv,
struct ieee80211_channel_switch *ch_switch)
{
/*
* MULTI-FIXME
* See iwlagn_mac_channel_switch.
*/
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
struct iwl5000_channel_switch_cmd cmd;
u32 switch_time_in_usec, ucode_switch_time;
u16 ch;
u32 tsf_low;
u8 switch_count;
u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
struct ieee80211_vif *vif = ctx->vif;
struct iwl_host_cmd hcmd = {
.id = REPLY_CHANNEL_SWITCH,
.len = { sizeof(cmd), },
.flags = CMD_SYNC,
.data = { &cmd, },
};
cmd.band = priv->band == IEEE80211_BAND_2GHZ;
ch = ch_switch->channel->hw_value;
IWL_DEBUG_11H(priv, "channel switch from %d to %d\n",
ctx->active.channel, ch);
cmd.channel = cpu_to_le16(ch);
cmd.rxon_flags = ctx->staging.flags;
cmd.rxon_filter_flags = ctx->staging.filter_flags;
switch_count = ch_switch->count;
tsf_low = ch_switch->timestamp & 0x0ffffffff;
/*
* calculate the ucode channel switch time
* adding TSF as one of the factor for when to switch
*/
if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
beacon_interval)) {
switch_count -= (priv->ucode_beacon_time -
tsf_low) / beacon_interval;
} else
switch_count = 0;
}
if (switch_count <= 1)
cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
else {
switch_time_in_usec =
vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
ucode_switch_time = iwl_usecs_to_beacons(priv,
switch_time_in_usec,
beacon_interval);
cmd.switch_time = iwl_add_beacon_time(priv,
priv->ucode_beacon_time,
ucode_switch_time,
beacon_interval);
}
IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
cmd.switch_time);
cmd.expect_beacon = ch_switch->channel->flags & IEEE80211_CHAN_RADAR;
return iwl_dvm_send_cmd(priv, &hcmd);
}
struct iwl_lib_ops iwl5000_lib = {
.set_hw_params = iwl5000_hw_set_hw_params,
.set_channel_switch = iwl5000_hw_channel_switch,
.temperature = iwlagn_temperature,
};
struct iwl_lib_ops iwl5150_lib = {
.set_hw_params = iwl5150_hw_set_hw_params,
.set_channel_switch = iwl5000_hw_channel_switch,
.temperature = iwl5150_temperature,
};
/*
* 6000 series
* ===========
*/
static void iwl6000_set_ct_threshold(struct iwl_priv *priv)
{
/* want Celsius */
priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD;
priv->hw_params.ct_kill_exit_threshold = CT_KILL_EXIT_THRESHOLD;
}
/* NIC configuration for 6000 series */
static void iwl6000_nic_config(struct iwl_priv *priv)
{
switch (priv->cfg->device_family) {
case IWL_DEVICE_FAMILY_6005:
case IWL_DEVICE_FAMILY_6030:
case IWL_DEVICE_FAMILY_6000:
break;
case IWL_DEVICE_FAMILY_6000i:
/* 2x2 IPA phy type */
iwl_write32(priv->trans, CSR_GP_DRIVER_REG,
CSR_GP_DRIVER_REG_BIT_RADIO_SKU_2x2_IPA);
break;
case IWL_DEVICE_FAMILY_6050:
/* Indicate calibration version to uCode. */
if (priv->eeprom_data->calib_version >= 6)
iwl_set_bit(priv->trans, CSR_GP_DRIVER_REG,
CSR_GP_DRIVER_REG_BIT_CALIB_VERSION6);
break;
case IWL_DEVICE_FAMILY_6150:
/* Indicate calibration version to uCode. */
if (priv->eeprom_data->calib_version >= 6)
iwl_set_bit(priv->trans, CSR_GP_DRIVER_REG,
CSR_GP_DRIVER_REG_BIT_CALIB_VERSION6);
iwl_set_bit(priv->trans, CSR_GP_DRIVER_REG,
CSR_GP_DRIVER_REG_BIT_6050_1x2);
break;
default:
WARN_ON(1);
}
}
static const struct iwl_sensitivity_ranges iwl6000_sensitivity = {
.min_nrg_cck = 110,
.auto_corr_min_ofdm = 80,
.auto_corr_min_ofdm_mrc = 128,
.auto_corr_min_ofdm_x1 = 105,
.auto_corr_min_ofdm_mrc_x1 = 192,
.auto_corr_max_ofdm = 145,
.auto_corr_max_ofdm_mrc = 232,
.auto_corr_max_ofdm_x1 = 110,
.auto_corr_max_ofdm_mrc_x1 = 232,
.auto_corr_min_cck = 125,
.auto_corr_max_cck = 175,
.auto_corr_min_cck_mrc = 160,
.auto_corr_max_cck_mrc = 310,
.nrg_th_cck = 110,
.nrg_th_ofdm = 110,
.barker_corr_th_min = 190,
.barker_corr_th_min_mrc = 336,
.nrg_th_cca = 62,
};
static void iwl6000_hw_set_hw_params(struct iwl_priv *priv)
{
iwl6000_set_ct_threshold(priv);
/* Set initial sensitivity parameters */
priv->hw_params.sens = &iwl6000_sensitivity;
}
static int iwl6000_hw_channel_switch(struct iwl_priv *priv,
struct ieee80211_channel_switch *ch_switch)
{
/*
* MULTI-FIXME
* See iwlagn_mac_channel_switch.
*/
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
struct iwl6000_channel_switch_cmd *cmd;
u32 switch_time_in_usec, ucode_switch_time;
u16 ch;
u32 tsf_low;
u8 switch_count;
u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
struct ieee80211_vif *vif = ctx->vif;
struct iwl_host_cmd hcmd = {
.id = REPLY_CHANNEL_SWITCH,
.len = { sizeof(*cmd), },
.flags = CMD_SYNC,
.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
};
int err;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
hcmd.data[0] = cmd;
cmd->band = priv->band == IEEE80211_BAND_2GHZ;
ch = ch_switch->channel->hw_value;
IWL_DEBUG_11H(priv, "channel switch from %u to %u\n",
ctx->active.channel, ch);
cmd->channel = cpu_to_le16(ch);
cmd->rxon_flags = ctx->staging.flags;
cmd->rxon_filter_flags = ctx->staging.filter_flags;
switch_count = ch_switch->count;
tsf_low = ch_switch->timestamp & 0x0ffffffff;
/*
* calculate the ucode channel switch time
* adding TSF as one of the factor for when to switch
*/
if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
beacon_interval)) {
switch_count -= (priv->ucode_beacon_time -
tsf_low) / beacon_interval;
} else
switch_count = 0;
}
if (switch_count <= 1)
cmd->switch_time = cpu_to_le32(priv->ucode_beacon_time);
else {
switch_time_in_usec =
vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
ucode_switch_time = iwl_usecs_to_beacons(priv,
switch_time_in_usec,
beacon_interval);
cmd->switch_time = iwl_add_beacon_time(priv,
priv->ucode_beacon_time,
ucode_switch_time,
beacon_interval);
}
IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
cmd->switch_time);
cmd->expect_beacon = ch_switch->channel->flags & IEEE80211_CHAN_RADAR;
err = iwl_dvm_send_cmd(priv, &hcmd);
kfree(cmd);
return err;
}
struct iwl_lib_ops iwl6000_lib = {
.set_hw_params = iwl6000_hw_set_hw_params,
.set_channel_switch = iwl6000_hw_channel_switch,
.nic_config = iwl6000_nic_config,
.temperature = iwlagn_temperature,
};
struct iwl_lib_ops iwl6030_lib = {
.set_hw_params = iwl6000_hw_set_hw_params,
.set_channel_switch = iwl6000_hw_channel_switch,
.nic_config = iwl6000_nic_config,
.temperature = iwlagn_temperature,
};
Reference in a new issue View git blame Copy permalink