FreeBSD/Linux Kernel Cross Reference
sys/gnu/dev/bwn/phy_n/if_bwn_phy_n_sprom.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause
      *
      * Copyright (c) 2016 Landon Fuller <landonf@FreeBSD.org>
      * Copyright (c) 2017 The FreeBSD Foundation
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer,
     *    without modification.
     * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
     *    redistribution must be conditioned upon including a substantially
     *    similar Disclaimer requirement for further binary redistribution.
     *
     * NO WARRANTY
     * 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 NONINFRINGEMENT, MERCHANTIBILITY
     * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
     * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
     *
     * $FreeBSD$
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/malloc.h>
    #include <sys/kernel.h>
    #include <sys/socket.h>
    
    #include <net/ethernet.h>
    #include <net/if.h>
    #include <net/if_var.h>
    #include <net/if_arp.h>
    #include <net/if_dl.h>
    #include <net/if_llc.h>
    #include <net/if_media.h>
    #include <net/if_types.h>
    
    #include <net80211/ieee80211_var.h>
    #include <net80211/ieee80211_radiotap.h>
    #include <net80211/ieee80211_regdomain.h>
    #include <net80211/ieee80211_phy.h>
    #include <net80211/ieee80211_ratectl.h>
    
    #include <dev/bhnd/bhnd.h>
    
    #include <dev/bwn/if_bwnvar.h>
    
    #include "if_bwn_phy_n_sprom.h"
    
    #include "bhnd_nvram_map.h"
    
    
    /* Core power NVRAM variables, indexed by D11 core unit number */
    static const struct bwn_nphy_power_vars {
            const char *itt2ga;
            const char *itt5ga;
            const char *maxp2ga;
            const char *pa2ga;
            const char *pa5ga;
    } bwn_nphy_power_vars[BWN_NPHY_NUM_CORE_PWR] = {
    #define BHND_POWER_NVAR(_idx)                                   \
            { BHND_NVAR_ITT2GA ## _idx, BHND_NVAR_ITT5GA ## _idx,   \
              BHND_NVAR_MAXP2GA ## _idx, BHND_NVAR_PA2GA ## _idx,   \
              BHND_NVAR_PA5GA ## _idx }
            BHND_POWER_NVAR(0),
            BHND_POWER_NVAR(1),
            BHND_POWER_NVAR(2),
            BHND_POWER_NVAR(3)
    #undef BHND_POWER_NVAR
    };
    
    static int
    bwn_nphy_get_core_power_info_r11(struct bwn_softc *sc,
        const struct bwn_nphy_power_vars *v, struct bwn_phy_n_core_pwr_info *c)
    {
            int16_t pa5ga[12];
            int     error;
    
            /* BHND_NVAR_PA2GA[core] */
            error = bhnd_nvram_getvar_array(sc->sc_dev, v->pa2ga, c->pa_2g,
                sizeof(c->pa_2g), BHND_NVRAM_TYPE_INT16);
            if (error)
                    return (error);
    
            /* 
            * BHND_NVAR_PA5GA
            * 
            * The NVRAM variable is defined as a single pa5ga[12] array; we have
            * to split this into pa_5gl[4], pa_5g[4], and pa_5gh[4] for use
            * by bwn(4);
            */
           _Static_assert(nitems(pa5ga) == nitems(c->pa_5g) + nitems(c->pa_5gh) +
               nitems(c->pa_5gl), "cannot split pa5ga into pa_5gl/pa_5g/pa_5gh");
   
           error = bhnd_nvram_getvar_array(sc->sc_dev, v->pa5ga, pa5ga,
               sizeof(pa5ga), BHND_NVRAM_TYPE_INT16);
           if (error)
                   return (error);
   
           memcpy(c->pa_5gl, &pa5ga[0], sizeof(c->pa_5gl));
           memcpy(c->pa_5g, &pa5ga[4], sizeof(c->pa_5g));
           memcpy(c->pa_5gh, &pa5ga[8], sizeof(c->pa_5gh));
           return (0);
   }
   
   static int
   bwn_nphy_get_core_power_info_r4_r10(struct bwn_softc *sc,
       const struct bwn_nphy_power_vars *v, struct bwn_phy_n_core_pwr_info *c)
   {
           int error;
   
           /* BHND_NVAR_ITT2GA[core] */
           error = bhnd_nvram_getvar_uint8(sc->sc_dev, v->itt2ga, &c->itssi_2g);
           if (error)
                   return (error);
   
           /* BHND_NVAR_ITT5GA[core] */
           error = bhnd_nvram_getvar_uint8(sc->sc_dev, v->itt5ga, &c->itssi_5g);
           if (error)
                   return (error);
   
           return (0);
   }
   
   /*
    * siba_sprom_get_core_power_info()
    *
    * Referenced by:
    *   bwn_nphy_tx_power_ctl_setup()
    *   bwn_ppr_load_max_from_sprom()
    */
   int
   bwn_nphy_get_core_power_info(struct bwn_mac *mac, int core,
       struct bwn_phy_n_core_pwr_info *c)
   {
           struct bwn_softc                        *sc;
           const struct bwn_nphy_power_vars        *v;
           uint8_t                                  sromrev;
           int                                      error;
   
           sc = mac->mac_sc;
   
           if (core < 0 || core >= nitems(bwn_nphy_power_vars))
                   return (EINVAL);
   
           sromrev = sc->sc_board_info.board_srom_rev;
           if (sromrev < 4)
                   return (ENXIO);
   
           v = &bwn_nphy_power_vars[core];
   
           /* Any power variables not found in NVRAM (or returning a
            * shorter array for a particular NVRAM revision) should be zero
            * initialized */
           memset(c, 0x0, sizeof(*c));
   
           /* Populate SPROM revision-independent values */
           error = bhnd_nvram_getvar_uint8(sc->sc_dev, v->maxp2ga, &c->maxpwr_2g);
           if (error)
                   return (error);
   
           /* Populate SPROM revision-specific values */
           if (sromrev >= 4 && sromrev <= 10)
                   return (bwn_nphy_get_core_power_info_r4_r10(sc, v, c));
           else
                   return (bwn_nphy_get_core_power_info_r11(sc, v, c));
   }

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