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/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 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.GPL.
*
* Contact Information:
* Tomas Winkler <tomas.winkler@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.h>
#include <net/mac80211.h>
struct iwl_priv; /* FIXME: remove */
#include "iwl-debug.h"
#include "iwl-eeprom.h"
#include "iwl-4965.h" /* FIXME: remove */
#include "iwl-core.h"
#include "iwl-rfkill.h"
MODULE_DESCRIPTION("iwl core");
MODULE_VERSION(IWLWIFI_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT);
MODULE_LICENSE("GPL");
#ifdef CONFIG_IWLWIFI_DEBUG
u32 iwl_debug_level;
EXPORT_SYMBOL(iwl_debug_level);
#endif
/* This function both allocates and initializes hw and priv. */
struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
struct ieee80211_ops *hw_ops)
{
struct iwl_priv *priv;
/* mac80211 allocates memory for this device instance, including
* space for this driver's private structure */
struct ieee80211_hw *hw =
ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
if (hw == NULL) {
IWL_ERROR("Can not allocate network device\n");
goto out;
}
priv = hw->priv;
priv->hw = hw;
out:
return hw;
}
EXPORT_SYMBOL(iwl_alloc_all);
/**
* iwlcore_clear_stations_table - Clear the driver's station table
*
* NOTE: This does not clear or otherwise alter the device's station table.
*/
void iwlcore_clear_stations_table(struct iwl_priv *priv)
{
unsigned long flags;
spin_lock_irqsave(&priv->sta_lock, flags);
priv->num_stations = 0;
memset(priv->stations, 0, sizeof(priv->stations));
spin_unlock_irqrestore(&priv->sta_lock, flags);
}
EXPORT_SYMBOL(iwlcore_clear_stations_table);
void iwlcore_reset_qos(struct iwl_priv *priv)
{
u16 cw_min = 15;
u16 cw_max = 1023;
u8 aifs = 2;
u8 is_legacy = 0;
unsigned long flags;
int i;
spin_lock_irqsave(&priv->lock, flags);
priv->qos_data.qos_active = 0;
if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
if (priv->qos_data.qos_enable)
priv->qos_data.qos_active = 1;
if (!(priv->active_rate & 0xfff0)) {
cw_min = 31;
is_legacy = 1;
}
} else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
if (priv->qos_data.qos_enable)
priv->qos_data.qos_active = 1;
} else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
cw_min = 31;
is_legacy = 1;
}
if (priv->qos_data.qos_active)
aifs = 3;
priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
if (priv->qos_data.qos_active) {
i = 1;
priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
i = 2;
priv->qos_data.def_qos_parm.ac[i].cw_min =
cpu_to_le16((cw_min + 1) / 2 - 1);
priv->qos_data.def_qos_parm.ac[i].cw_max =
cpu_to_le16(cw_max);
priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
if (is_legacy)
priv->qos_data.def_qos_parm.ac[i].edca_txop =
cpu_to_le16(6016);
else
priv->qos_data.def_qos_parm.ac[i].edca_txop =
cpu_to_le16(3008);
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
i = 3;
priv->qos_data.def_qos_parm.ac[i].cw_min =
cpu_to_le16((cw_min + 1) / 4 - 1);
priv->qos_data.def_qos_parm.ac[i].cw_max =
cpu_to_le16((cw_max + 1) / 2 - 1);
priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
if (is_legacy)
priv->qos_data.def_qos_parm.ac[i].edca_txop =
cpu_to_le16(3264);
else
priv->qos_data.def_qos_parm.ac[i].edca_txop =
cpu_to_le16(1504);
} else {
for (i = 1; i < 4; i++) {
priv->qos_data.def_qos_parm.ac[i].cw_min =
cpu_to_le16(cw_min);
priv->qos_data.def_qos_parm.ac[i].cw_max =
cpu_to_le16(cw_max);
priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
}
}
IWL_DEBUG_QOS("set QoS to default \n");
spin_unlock_irqrestore(&priv->lock, flags);
}
EXPORT_SYMBOL(iwlcore_reset_qos);
/**
* iwlcore_set_rxon_channel - Set the phymode and channel values in staging RXON
* @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
* @channel: Any channel valid for the requested phymode
* In addition to setting the staging RXON, priv->phymode is also set.
*
* NOTE: Does not commit to the hardware; it sets appropriate bit fields
* in the staging RXON flag structure based on the phymode
*/
int iwlcore_set_rxon_channel(struct iwl_priv *priv,
enum ieee80211_band band,
u16 channel)
{
if (!iwl_get_channel_info(priv, band, channel)) {
IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
channel, band);
return -EINVAL;
}
if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
(priv->band == band))
return 0;
priv->staging_rxon.channel = cpu_to_le16(channel);
if (band == IEEE80211_BAND_5GHZ)
priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
else
priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
priv->band = band;
IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
return 0;
}
EXPORT_SYMBOL(iwlcore_set_rxon_channel);
static void iwlcore_init_hw(struct iwl_priv *priv)
{
struct ieee80211_hw *hw = priv->hw;
hw->rate_control_algorithm = "iwl-4965-rs";
/* Tell mac80211 and its clients (e.g. Wireless Extensions)
* the range of signal quality values that we'll provide.
* Negative values for level/noise indicate that we'll provide dBm.
* For WE, at least, non-0 values here *enable* display of values
* in app (iwconfig). */
hw->max_rssi = -20; /* signal level, negative indicates dBm */
hw->max_noise = -20; /* noise level, negative indicates dBm */
hw->max_signal = 100; /* link quality indication (%) */
/* Tell mac80211 our Tx characteristics */
hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
/* Default value; 4 EDCA QOS priorities */
hw->queues = 4;
#ifdef CONFIG_IWL4965_HT
/* Enhanced value; more queues, to support 11n aggregation */
hw->queues = 16;
#endif /* CONFIG_IWL4965_HT */
}
int iwl_setup(struct iwl_priv *priv)
{
int ret = 0;
iwlcore_init_hw(priv);
ret = priv->cfg->ops->lib->init_drv(priv);
return ret;
}
EXPORT_SYMBOL(iwl_setup);
/* Low level driver call this function to update iwlcore with
* driver status.
*/
int iwlcore_low_level_notify(struct iwl_priv *priv,
enum iwlcore_card_notify notify)
{
int ret;
switch (notify) {
case IWLCORE_INIT_EVT:
ret = iwl_rfkill_init(priv);
if (ret)
IWL_ERROR("Unable to initialize RFKILL system. "
"Ignoring error: %d\n", ret);
break;
case IWLCORE_START_EVT:
break;
case IWLCORE_STOP_EVT:
break;
case IWLCORE_REMOVE_EVT:
iwl_rfkill_unregister(priv);
break;
}
return 0;
}
EXPORT_SYMBOL(iwlcore_low_level_notify);
int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
{
u32 stat_flags = 0;
struct iwl_host_cmd cmd = {
.id = REPLY_STATISTICS_CMD,
.meta.flags = flags,
.len = sizeof(stat_flags),
.data = (u8 *) &stat_flags,
};
return iwl_send_cmd(priv, &cmd);
}
EXPORT_SYMBOL(iwl_send_statistics_request);
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