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/******************************************************************************

 *

 * Copyright(c) 2005 - 2007 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:

 * James P. Ketrenos <ipw2100-admin@linux.intel.com>

 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

 *

 *****************************************************************************/

#ifndef __iwl_3945_rs_h__

#define __iwl_3945_rs_h__

struct iwl_rate_info {

        u8 plcp;

        u8 ieee;

        u8 prev_ieee;           /* previous rate in IEEE speeds */

        u8 next_ieee;           /* next rate in IEEE speeds */

        u8 prev_rs;             /* previous rate used in rs algo */

        u8 next_rs;             /* next rate used in rs algo */

        u8 prev_rs_tgg;         /* previous rate used in TGG rs algo */

        u8 next_rs_tgg;         /* next rate used in TGG rs algo */

        u8 table_rs_index;      /* index in rate scale table cmd */

        u8 prev_table_rs;       /* prev in rate table cmd */

};

enum {

        IWL_RATE_1M_INDEX = 0,

        IWL_RATE_2M_INDEX,

        IWL_RATE_5M_INDEX,

        IWL_RATE_11M_INDEX,

        IWL_RATE_6M_INDEX,

        IWL_RATE_9M_INDEX,

        IWL_RATE_12M_INDEX,

        IWL_RATE_18M_INDEX,

        IWL_RATE_24M_INDEX,

        IWL_RATE_36M_INDEX,

        IWL_RATE_48M_INDEX,

        IWL_RATE_54M_INDEX,

        IWL_RATE_COUNT,

        IWL_RATE_INVM_INDEX,

        IWL_RATE_INVALID = IWL_RATE_INVM_INDEX

};

enum {

        IWL_RATE_6M_INDEX_TABLE = 0,

        IWL_RATE_9M_INDEX_TABLE,

        IWL_RATE_12M_INDEX_TABLE,

        IWL_RATE_18M_INDEX_TABLE,

        IWL_RATE_24M_INDEX_TABLE,

        IWL_RATE_36M_INDEX_TABLE,

        IWL_RATE_48M_INDEX_TABLE,

        IWL_RATE_54M_INDEX_TABLE,

        IWL_RATE_1M_INDEX_TABLE,

        IWL_RATE_2M_INDEX_TABLE,

        IWL_RATE_5M_INDEX_TABLE,

        IWL_RATE_11M_INDEX_TABLE,

        IWL_RATE_INVM_INDEX_TABLE = IWL_RATE_INVM_INDEX,

};

enum {

        IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX,

        IWL_LAST_OFDM_RATE = IWL_RATE_54M_INDEX,

        IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX,

        IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX,

};

/* #define vs. enum to keep from defaulting to 'large integer' */

#define IWL_RATE_6M_MASK   (1<<IWL_RATE_6M_INDEX)

#define IWL_RATE_9M_MASK   (1<<IWL_RATE_9M_INDEX)

#define IWL_RATE_12M_MASK  (1<<IWL_RATE_12M_INDEX)

#define IWL_RATE_18M_MASK  (1<<IWL_RATE_18M_INDEX)

#define IWL_RATE_24M_MASK  (1<<IWL_RATE_24M_INDEX)

#define IWL_RATE_36M_MASK  (1<<IWL_RATE_36M_INDEX)

#define IWL_RATE_48M_MASK  (1<<IWL_RATE_48M_INDEX)

#define IWL_RATE_54M_MASK  (1<<IWL_RATE_54M_INDEX)

#define IWL_RATE_1M_MASK   (1<<IWL_RATE_1M_INDEX)

#define IWL_RATE_2M_MASK   (1<<IWL_RATE_2M_INDEX)

#define IWL_RATE_5M_MASK   (1<<IWL_RATE_5M_INDEX)

#define IWL_RATE_11M_MASK  (1<<IWL_RATE_11M_INDEX)

enum {

        IWL_RATE_6M_PLCP = 13,

        IWL_RATE_9M_PLCP = 15,

        IWL_RATE_12M_PLCP = 5,

        IWL_RATE_18M_PLCP = 7,

        IWL_RATE_24M_PLCP = 9,

        IWL_RATE_36M_PLCP = 11,

        IWL_RATE_48M_PLCP = 1,

        IWL_RATE_54M_PLCP = 3,

        IWL_RATE_1M_PLCP = 10,

        IWL_RATE_2M_PLCP = 20,

        IWL_RATE_5M_PLCP = 55,

        IWL_RATE_11M_PLCP = 110,

};

enum {

        IWL_RATE_6M_IEEE = 12,

        IWL_RATE_9M_IEEE = 18,

        IWL_RATE_12M_IEEE = 24,

        IWL_RATE_18M_IEEE = 36,

        IWL_RATE_24M_IEEE = 48,

        IWL_RATE_36M_IEEE = 72,

        IWL_RATE_48M_IEEE = 96,

        IWL_RATE_54M_IEEE = 108,

        IWL_RATE_1M_IEEE = 2,

        IWL_RATE_2M_IEEE = 4,

        IWL_RATE_5M_IEEE = 11,

        IWL_RATE_11M_IEEE = 22,

};

#define IWL_CCK_BASIC_RATES_MASK    \

       (IWL_RATE_1M_MASK          | \

        IWL_RATE_2M_MASK)

#define IWL_CCK_RATES_MASK          \

       (IWL_BASIC_RATES_MASK      | \

        IWL_RATE_5M_MASK          | \

        IWL_RATE_11M_MASK)

#define IWL_OFDM_BASIC_RATES_MASK   \

        (IWL_RATE_6M_MASK         | \

        IWL_RATE_12M_MASK         | \

        IWL_RATE_24M_MASK)

#define IWL_OFDM_RATES_MASK         \

       (IWL_OFDM_BASIC_RATES_MASK | \

        IWL_RATE_9M_MASK          | \

        IWL_RATE_18M_MASK         | \

        IWL_RATE_36M_MASK         | \

        IWL_RATE_48M_MASK         | \

        IWL_RATE_54M_MASK)

#define IWL_BASIC_RATES_MASK         \

        (IWL_OFDM_BASIC_RATES_MASK | \

         IWL_CCK_BASIC_RATES_MASK)

#define IWL_RATES_MASK ((1<<IWL_RATE_COUNT)-1)

#define IWL_INVALID_VALUE    -1

#define IWL_MIN_RSSI_VAL                 -100

#define IWL_MAX_RSSI_VAL                    0

extern const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];

static inline u8 iwl_get_prev_ieee_rate(u8 rate_index)

{

        u8 rate = iwl_rates[rate_index].prev_ieee;

        if (rate == IWL_RATE_INVALID)

                rate = rate_index;

        return rate;

}

/**

 * iwl_fill_rs_info - Fill an output text buffer with the rate representation

 *

 * NOTE:  This is provided as a quick mechanism for a user to visualize

 * the performance of the rate control alogirthm and is not meant to be

 * parsed software.

 */

extern int iwl_fill_rs_info(struct ieee80211_hw *, char *buf, u8 sta_id);

/**

 * iwl_rate_scale_init - Initialize the rate scale table based on assoc info

 *

 * The specific througput table used is based on the type of network

 * the associated with, including A, B, G, and G w/ TGG protection

 */

extern void iwl_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);

/**

 * iwl_rate_control_register - Register the rate control algorithm callbacks

 *

 * Since the rate control algorithm is hardware specific, there is no need

 * or reason to place it as a stand alone module.  The driver can call

 * iwl_rate_control_register in order to register the rate control callbacks

 * with the mac80211 subsystem.  This should be performed prior to calling

 * ieee80211_register_hw

 *

 */

extern void iwl_rate_control_register(struct ieee80211_hw *hw);

/**

 * iwl_rate_control_unregister - Unregister the rate control callbacks

 *

 * This should be called after calling ieee80211_unregister_hw, but before

 * the driver is unloaded.

 */

extern void iwl_rate_control_unregister(struct ieee80211_hw *hw);

#endif