caps.c

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/*------------------------------------------------------------------------------
 *-------------------------        ATH5K Driver          -----------------------
 *------------------------------------------------------------------------------
 *                                                           V1.0  08/02/2010
 *
 *
 *  Feb 2010 - Samuel Cabrero <samuelcabrero@gmail.com>
 *              Initial release
 *
 *  ----------------------------------------------------------------------------
 *  Copyright (C) 2000-2010, Universidad de Zaragoza, SPAIN
 *
 *  Autors:
 *              Samuel Cabrero        <samuelcabrero@gmail.com>
 *              Danilo Tardioli       <dantard@unizar.es>
 *              Jose Luis Villarroel  <jlvilla@unizar.es>
 *
 *  This is a simplified version of the original ath5k driver. It should work 
 *  with all Atheros 5xxx WLAN cards. The 802.11 layer have been removed so it
 *  just send and receive frames over the air, as if it were an Ethernet bus
 *  interface.
 *
 *  Please read ath5k_interface.h for instructions.
 *
 *  This program is distributed under the terms of GPL version 2 and 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.
 *
 *----------------------------------------------------------------------------*/
/*
 * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
 * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
 * Copyright (c) 2007-2008 Jiri Slaby <jirislaby@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

/**************\
* Capabilities *
\**************/

#include "ath5k.h"
#include "reg.h"
#include "debug.h"
#include "base.h"

/*
 * Fill the capabilities struct
 * TODO: Merge this with EEPROM code when we are done with it
 */
int ath5k_hw_set_capabilities(struct ath5k_hw *ah)
{
        u16 ee_header;

        ATH5K_TRACE(ah->ah_sc);
        /* Capabilities stored in the EEPROM */
        ee_header = ah->ah_capabilities.cap_eeprom.ee_header;

        if (ah->ah_version == AR5K_AR5210) {
                /*
                 * Set radio capabilities
                 * (The AR5110 only supports the middle 5GHz band)
                 */
                ah->ah_capabilities.cap_range.range_5ghz_min = 5120;
                ah->ah_capabilities.cap_range.range_5ghz_max = 5430;
                ah->ah_capabilities.cap_range.range_2ghz_min = 0;
                ah->ah_capabilities.cap_range.range_2ghz_max = 0;

                /* Set supported modes */
                __set_bit(AR5K_MODE_11A, ah->ah_capabilities.cap_mode);
                __set_bit(AR5K_MODE_11A_TURBO, ah->ah_capabilities.cap_mode);
        } else {
                /*
                 * XXX The tranceiver supports frequencies from 4920 to 6100GHz
                 * XXX and from 2312 to 2732GHz. There are problems with the
                 * XXX current ieee80211 implementation because the IEEE
                 * XXX channel mapping does not support negative channel
                 * XXX numbers (2312MHz is channel -19). Of course, this
                 * XXX doesn't matter because these channels are out of range
                 * XXX but some regulation domains like MKK (Japan) will
                 * XXX support frequencies somewhere around 4.8GHz.
                 */

                /*
                 * Set radio capabilities
                 */

                if (AR5K_EEPROM_HDR_11A(ee_header)) {
                        /* 4920 */
                        ah->ah_capabilities.cap_range.range_5ghz_min = 5005;
                        ah->ah_capabilities.cap_range.range_5ghz_max = 6100;

                        /* Set supported modes */
                        __set_bit(AR5K_MODE_11A,
                                        ah->ah_capabilities.cap_mode);
                        __set_bit(AR5K_MODE_11A_TURBO,
                                        ah->ah_capabilities.cap_mode);
                        if (ah->ah_version == AR5K_AR5212)
                                __set_bit(AR5K_MODE_11G_TURBO,
                                                ah->ah_capabilities.cap_mode);
                }

                /* Enable  802.11b if a 2GHz capable radio (2111/5112) is
                 * connected */
                if (AR5K_EEPROM_HDR_11B(ee_header) ||
                    (AR5K_EEPROM_HDR_11G(ee_header) &&
                     ah->ah_version != AR5K_AR5211)) {
                        /* 2312 */
                        ah->ah_capabilities.cap_range.range_2ghz_min = 2412;
                        ah->ah_capabilities.cap_range.range_2ghz_max = 2732;

                        if (AR5K_EEPROM_HDR_11B(ee_header))
                                __set_bit(AR5K_MODE_11B,
                                                ah->ah_capabilities.cap_mode);

                        if (AR5K_EEPROM_HDR_11G(ee_header) &&
                            ah->ah_version != AR5K_AR5211)
                                __set_bit(AR5K_MODE_11G,
                                                ah->ah_capabilities.cap_mode);
                }
        }

        /* Set number of supported TX queues */
        if (ah->ah_version == AR5K_AR5210)
                ah->ah_capabilities.cap_queues.q_tx_num =
                        AR5K_NUM_TX_QUEUES_NOQCU;
        else
                ah->ah_capabilities.cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES;

        return 0;
}

/* Main function used by the driver part to check caps */
int ath5k_hw_get_capability(struct ath5k_hw *ah,
                enum ath5k_capability_type cap_type,
                u32 capability, u32 *result)
{
        ATH5K_TRACE(ah->ah_sc);

        switch (cap_type) {
        case AR5K_CAP_NUM_TXQUEUES:
                if (result) {
                        if (ah->ah_version == AR5K_AR5210)
                                *result = AR5K_NUM_TX_QUEUES_NOQCU;
                        else
                                *result = AR5K_NUM_TX_QUEUES;
                        goto yes;
                }
        case AR5K_CAP_VEOL:
                goto yes;
        case AR5K_CAP_COMPRESSION:
                if (ah->ah_version == AR5K_AR5212)
                        goto yes;
                else
                        goto no;
        case AR5K_CAP_BURST:
                goto yes;
        case AR5K_CAP_TPC:
                goto yes;
        case AR5K_CAP_BSSIDMASK:
                if (ah->ah_version == AR5K_AR5212)
                        goto yes;
                else
                        goto no;
        case AR5K_CAP_XR:
                if (ah->ah_version == AR5K_AR5212)
                        goto yes;
                else
                        goto no;
        default:
                goto no;
        }

no:
        return -EINVAL;
yes:
        return 0;
}

/*
 * TODO: Following functions should be part of a new function
 * set_capability
 */

int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid,
                u16 assoc_id)
{
        ATH5K_TRACE(ah->ah_sc);

        if (ah->ah_version == AR5K_AR5210) {
                AR5K_REG_DISABLE_BITS(ah, AR5K_STA_ID1,
                        AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
                return 0;
        }

        return -EIO;
}

int ath5k_hw_disable_pspoll(struct ath5k_hw *ah)
{
        ATH5K_TRACE(ah->ah_sc);

        if (ah->ah_version == AR5K_AR5210) {
                AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1,
                        AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
                return 0;
        }

        return -EIO;
}