drivers/net/wireless/iwlwifi/iwl-agn.h

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * 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.GPL.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

#ifndef __iwl_agn_h__
#define __iwl_agn_h__

#include "iwl-dev.h"

struct iwl_ucode_capabilities;

extern struct ieee80211_ops iwlagn_hw_ops;

static inline void iwl_set_calib_hdr(struct iwl_calib_hdr *hdr, u8 cmd)
{
	hdr->op_code = cmd;
	hdr->first_group = 0;
	hdr->groups_num = 1;
	hdr->data_valid = 1;
}

void iwl_down(struct iwl_priv *priv);
void iwl_cancel_deferred_work(struct iwl_priv *priv);
void iwlagn_prepare_restart(struct iwl_priv *priv);

/* MAC80211 */
struct ieee80211_hw *iwl_alloc_all(void);
int iwlagn_mac_setup_register(struct iwl_priv *priv,
			      struct iwl_ucode_capabilities *capa);
void iwlagn_mac_unregister(struct iwl_priv *priv);

/* RXON */
int iwlagn_set_pan_params(struct iwl_priv *priv);
int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed);
void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_bss_conf *bss_conf,
			     u32 changes);
void iwlagn_config_ht40(struct ieee80211_conf *conf,
			struct iwl_rxon_context *ctx);

/* uCode */
int iwlagn_rx_calib_result(struct iwl_priv *priv,
			    struct iwl_rx_mem_buffer *rxb,
			    struct iwl_device_cmd *cmd);
void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags);

/* lib */
int iwlagn_send_tx_power(struct iwl_priv *priv);
void iwlagn_temperature(struct iwl_priv *priv);
u16 iwl_eeprom_calib_version(struct iwl_shared *shrd);
int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control);
void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control);
int iwlagn_send_beacon_cmd(struct iwl_priv *priv);
#ifdef CONFIG_PM_SLEEP
int iwlagn_send_patterns(struct iwl_priv *priv,
			 struct cfg80211_wowlan *wowlan);
int iwlagn_suspend(struct iwl_priv *priv,
		   struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan);
#endif

/* rx */
int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band);
void iwl_setup_rx_handlers(struct iwl_priv *priv);


/* tx */
int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
			struct ieee80211_sta *sta, u16 tid, u16 *ssn);
int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif,
			struct ieee80211_sta *sta, u16 tid, u8 buf_size);
int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
		       struct ieee80211_sta *sta, u16 tid);
int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
				   struct iwl_rx_mem_buffer *rxb,
				   struct iwl_device_cmd *cmd);
int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
			       struct iwl_device_cmd *cmd);

static inline u32 iwl_tx_status_to_mac80211(u32 status)
{
	status &= TX_STATUS_MSK;

	switch (status) {
	case TX_STATUS_SUCCESS:
	case TX_STATUS_DIRECT_DONE:
		return IEEE80211_TX_STAT_ACK;
	case TX_STATUS_FAIL_DEST_PS:
	case TX_STATUS_FAIL_PASSIVE_NO_RX:
		return IEEE80211_TX_STAT_TX_FILTERED;
	default:
		return 0;
	}
}

static inline bool iwl_is_tx_success(u32 status)
{
	status &= TX_STATUS_MSK;
	return (status == TX_STATUS_SUCCESS) ||
	       (status == TX_STATUS_DIRECT_DONE);
}

u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant_idx, u8 valid);

/* scan */
void iwlagn_post_scan(struct iwl_priv *priv);
void iwlagn_disable_roc(struct iwl_priv *priv);

/* bt coex */
void iwlagn_send_advance_bt_config(struct iwl_priv *priv);
int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
				  struct iwl_rx_mem_buffer *rxb,
				  struct iwl_device_cmd *cmd);
void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv);
void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv);
void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv);
void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv);
void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena);

#ifdef CONFIG_IWLWIFI_DEBUG
const char *iwl_get_tx_fail_reason(u32 status);
const char *iwl_get_agg_tx_fail_reason(u16 status);
#else
static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
static inline const char *iwl_get_agg_tx_fail_reason(u16 status) { return ""; }
#endif


/* station management */
int iwlagn_manage_ibss_station(struct iwl_priv *priv,
			       struct ieee80211_vif *vif, bool add);
#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
#define IWL_STA_UCODE_ACTIVE  BIT(1) /* ucode entry is active */
#define IWL_STA_UCODE_INPROGRESS  BIT(2) /* ucode entry is in process of
					    being activated */
#define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211;
				(this is for the IBSS BSSID stations) */
#define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */


void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
void iwl_clear_ucode_stations(struct iwl_priv *priv,
			      struct iwl_rxon_context *ctx);
void iwl_dealloc_bcast_stations(struct iwl_priv *priv);
int iwl_get_free_ucode_key_offset(struct iwl_priv *priv);
int iwl_send_add_sta(struct iwl_priv *priv,
		     struct iwl_addsta_cmd *sta, u8 flags);
int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
			   const u8 *addr, bool is_ap,
			   struct ieee80211_sta *sta, u8 *sta_id_r);
int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
		       const u8 *addr);
u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
		    const u8 *addr, bool is_ap, struct ieee80211_sta *sta);

void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
		     u8 sta_id, struct iwl_link_quality_cmd *link_cmd);
int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
		    struct iwl_link_quality_cmd *lq, u8 flags, bool init);
void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
			       struct iwl_device_cmd *cmd);


/**
 * iwl_clear_driver_stations - clear knowledge of all stations from driver
 * @priv: iwl priv struct
 *
 * This is called during iwl_down() to make sure that in the case
 * we're coming there from a hardware restart mac80211 will be
 * able to reconfigure stations -- if we're getting there in the
 * normal down flow then the stations will already be cleared.
 */
static inline void iwl_clear_driver_stations(struct iwl_priv *priv)
{
	unsigned long flags;
	struct iwl_rxon_context *ctx;

	spin_lock_irqsave(&priv->shrd->sta_lock, flags);
	memset(priv->stations, 0, sizeof(priv->stations));
	priv->num_stations = 0;

	priv->ucode_key_table = 0;

	for_each_context(priv, ctx) {
		/*
		 * Remove all key information that is not stored as part
		 * of station information since mac80211 may not have had
		 * a chance to remove all the keys. When device is
		 * reconfigured by mac80211 after an error all keys will
		 * be reconfigured.
		 */
		memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
		ctx->key_mapping_keys = 0;
	}

	spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
}

static inline int iwl_sta_id(struct ieee80211_sta *sta)
{
	if (WARN_ON(!sta))
		return IWL_INVALID_STATION;

	return ((struct iwl_station_priv *)sta->drv_priv)->sta_id;
}

/**
 * iwl_sta_id_or_broadcast - return sta_id or broadcast sta
 * @priv: iwl priv
 * @context: the current context
 * @sta: mac80211 station
 *
 * In certain circumstances mac80211 passes a station pointer
 * that may be %NULL, for example during TX or key setup. In
 * that case, we need to use the broadcast station, so this
 * inline wraps that pattern.
 */
static inline int iwl_sta_id_or_broadcast(struct iwl_priv *priv,
					  struct iwl_rxon_context *context,
					  struct ieee80211_sta *sta)
{
	int sta_id;

	if (!sta)
		return context->bcast_sta_id;

	sta_id = iwl_sta_id(sta);

	/*
	 * mac80211 should not be passing a partially
	 * initialised station!
	 */
	WARN_ON(sta_id == IWL_INVALID_STATION);

	return sta_id;
}

int iwlagn_alloc_bcast_station(struct iwl_priv *priv,
			       struct iwl_rxon_context *ctx);
int iwlagn_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
			     const u8 *addr, u8 *sta_id_r);
int iwl_remove_default_wep_key(struct iwl_priv *priv,
			       struct iwl_rxon_context *ctx,
			       struct ieee80211_key_conf *key);
int iwl_set_default_wep_key(struct iwl_priv *priv,
			    struct iwl_rxon_context *ctx,
			    struct ieee80211_key_conf *key);
int iwl_restore_default_wep_keys(struct iwl_priv *priv,
				 struct iwl_rxon_context *ctx);
int iwl_set_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
			struct ieee80211_key_conf *key,
			struct ieee80211_sta *sta);
int iwl_remove_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
			   struct ieee80211_key_conf *key,
			   struct ieee80211_sta *sta);
void iwl_update_tkip_key(struct iwl_priv *priv,
			 struct ieee80211_vif *vif,
			 struct ieee80211_key_conf *keyconf,
			 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key);
int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid);
int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
			 int tid, u16 ssn);
int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
			int tid);
void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt);
int iwl_update_bcast_station(struct iwl_priv *priv,
			     struct iwl_rxon_context *ctx);
int iwl_update_bcast_stations(struct iwl_priv *priv);

/* rate */
static inline u32 iwl_ant_idx_to_flags(u8 ant_idx)
{
	return BIT(ant_idx) << RATE_MCS_ANT_POS;
}

static inline u8 iwl_hw_get_rate(__le32 rate_n_flags)
{
	return le32_to_cpu(rate_n_flags) & RATE_MCS_RATE_MSK;
}

static inline __le32 iwl_hw_set_rate_n_flags(u8 rate, u32 flags)
{
	return cpu_to_le32(flags|(u32)rate);
}

/* eeprom */
void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv);
void iwl_eeprom_get_mac(const struct iwl_shared *shrd, u8 *mac);

extern int iwl_alive_start(struct iwl_priv *priv);
/* svtool */
#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
extern int iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data,
				   int len);
extern int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw,
				    struct sk_buff *skb,
				    struct netlink_callback *cb,
				    void *data, int len);
extern void iwl_testmode_init(struct iwl_priv *priv);
extern void iwl_testmode_cleanup(struct iwl_priv *priv);
#else
static inline
int iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data, int len)
{
	return -ENOSYS;
}
static inline
int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb,
		      struct netlink_callback *cb,
		      void *data, int len)
{
	return -ENOSYS;
}
static inline
void iwl_testmode_init(struct iwl_priv *priv)
{
}
static inline
void iwl_testmode_cleanup(struct iwl_priv *priv)
{
}
#endif

#endif /* __iwl_agn_h__ */