caps.c

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/*
 * Copyright (c) 2004-2008 Reyk Floeter <[email protected]>
 * Copyright (c) 2006-2008 Nick Kossifidis <[email protected]>
 * Copyright (c) 2007-2008 Jiri Slaby <[email protected]>
 *
 * 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 "../regd.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)
{
    struct ath5k_capabilities *caps = &ah->ah_capabilities;
    u16 ee_header;

    /* Capabilities stored in the EEPROM */
    ee_header = caps->cap_eeprom.ee_header;

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

        /* Set supported modes */
        __set_bit(AR5K_MODE_11A, caps->cap_mode);
    } else {
        /*
         * XXX The transceiver supports frequencies from 4920 to 6100MHz
         * XXX and from 2312 to 2732MHz. 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 the
         * XXX legal range.
         */

        /*
         * Set radio capabilities
         */

        if (AR5K_EEPROM_HDR_11A(ee_header)) {
            if (ath_is_49ghz_allowed(caps->cap_eeprom.ee_regdomain))
                caps->cap_range.range_5ghz_min = 4920;
            else
                caps->cap_range.range_5ghz_min = 5005;
            caps->cap_range.range_5ghz_max = 6100;

            /* Set supported modes */
            __set_bit(AR5K_MODE_11A, caps->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 */
            caps->cap_range.range_2ghz_min = 2412;
            caps->cap_range.range_2ghz_max = 2732;

            /* Override 2GHz modes on SoCs that need it
             * NOTE: cap_needs_2GHz_ovr gets set from
             * ath_ahb_probe */
            if (!caps->cap_needs_2GHz_ovr) {
                if (AR5K_EEPROM_HDR_11B(ee_header))
                    __set_bit(AR5K_MODE_11B,
                            caps->cap_mode);

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

    if ((ah->ah_radio_5ghz_revision & 0xf0) == AR5K_SREV_RAD_2112)
        __clear_bit(AR5K_MODE_11A, caps->cap_mode);

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

    /* Newer hardware has PHY error counters */
    if (ah->ah_mac_srev >= AR5K_SREV_AR5213A)
        caps->cap_has_phyerr_counters = true;
    else
        caps->cap_has_phyerr_counters = false;

    /* MACs since AR5212 have MRR support */
    if (ah->ah_version == AR5K_AR5212)
        caps->cap_has_mrr_support = true;
    else
        caps->cap_has_mrr_support = false;

    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)
{
    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)
{
    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;
}