1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2016 Landon Fuller <landonf@FreeBSD.org> 5 * Copyright (c) 2017 The FreeBSD Foundation 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer, 13 * without modification. 14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 15 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 16 * redistribution must be conditioned upon including a substantially 17 * similar Disclaimer requirement for further binary redistribution. 18 * 19 * NO WARRANTY 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 23 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 24 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 25 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 28 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGES. 31 */ 32 33 #include <sys/cdefs.h> 34 #include <sys/param.h> 35 #include <sys/malloc.h> 36 #include <sys/kernel.h> 37 #include <sys/socket.h> 38 39 #include <net/ethernet.h> 40 #include <net/if.h> 41 #include <net/if_var.h> 42 #include <net/if_arp.h> 43 #include <net/if_dl.h> 44 #include <net/if_llc.h> 45 #include <net/if_media.h> 46 #include <net/if_types.h> 47 48 #include <net80211/ieee80211_var.h> 49 #include <net80211/ieee80211_radiotap.h> 50 #include <net80211/ieee80211_regdomain.h> 51 #include <net80211/ieee80211_phy.h> 52 #include <net80211/ieee80211_ratectl.h> 53 54 #include <dev/bhnd/bhnd.h> 55 56 #include <dev/bwn/if_bwnvar.h> 57 58 #include "if_bwn_phy_n_sprom.h" 59 60 #include "bhnd_nvram_map.h" 61 62 63 /* Core power NVRAM variables, indexed by D11 core unit number */ 64 static const struct bwn_nphy_power_vars { 65 const char *itt2ga; 66 const char *itt5ga; 67 const char *maxp2ga; 68 const char *pa2ga; 69 const char *pa5ga; 70 } bwn_nphy_power_vars[BWN_NPHY_NUM_CORE_PWR] = { 71 #define BHND_POWER_NVAR(_idx) \ 72 { BHND_NVAR_ITT2GA ## _idx, BHND_NVAR_ITT5GA ## _idx, \ 73 BHND_NVAR_MAXP2GA ## _idx, BHND_NVAR_PA2GA ## _idx, \ 74 BHND_NVAR_PA5GA ## _idx } 75 BHND_POWER_NVAR(0), 76 BHND_POWER_NVAR(1), 77 BHND_POWER_NVAR(2), 78 BHND_POWER_NVAR(3) 79 #undef BHND_POWER_NVAR 80 }; 81 82 static int 83 bwn_nphy_get_core_power_info_r11(struct bwn_softc *sc, 84 const struct bwn_nphy_power_vars *v, struct bwn_phy_n_core_pwr_info *c) 85 { 86 int16_t pa5ga[12]; 87 int error; 88 89 /* BHND_NVAR_PA2GA[core] */ 90 error = bhnd_nvram_getvar_array(sc->sc_dev, v->pa2ga, c->pa_2g, 91 sizeof(c->pa_2g), BHND_NVRAM_TYPE_INT16); 92 if (error) 93 return (error); 94 95 /* 96 * BHND_NVAR_PA5GA 97 * 98 * The NVRAM variable is defined as a single pa5ga[12] array; we have 99 * to split this into pa_5gl[4], pa_5g[4], and pa_5gh[4] for use 100 * by bwn(4); 101 */ 102 _Static_assert(nitems(pa5ga) == nitems(c->pa_5g) + nitems(c->pa_5gh) + 103 nitems(c->pa_5gl), "cannot split pa5ga into pa_5gl/pa_5g/pa_5gh"); 104 105 error = bhnd_nvram_getvar_array(sc->sc_dev, v->pa5ga, pa5ga, 106 sizeof(pa5ga), BHND_NVRAM_TYPE_INT16); 107 if (error) 108 return (error); 109 110 memcpy(c->pa_5gl, &pa5ga[0], sizeof(c->pa_5gl)); 111 memcpy(c->pa_5g, &pa5ga[4], sizeof(c->pa_5g)); 112 memcpy(c->pa_5gh, &pa5ga[8], sizeof(c->pa_5gh)); 113 return (0); 114 } 115 116 static int 117 bwn_nphy_get_core_power_info_r4_r10(struct bwn_softc *sc, 118 const struct bwn_nphy_power_vars *v, struct bwn_phy_n_core_pwr_info *c) 119 { 120 int error; 121 122 /* BHND_NVAR_ITT2GA[core] */ 123 error = bhnd_nvram_getvar_uint8(sc->sc_dev, v->itt2ga, &c->itssi_2g); 124 if (error) 125 return (error); 126 127 /* BHND_NVAR_ITT5GA[core] */ 128 error = bhnd_nvram_getvar_uint8(sc->sc_dev, v->itt5ga, &c->itssi_5g); 129 if (error) 130 return (error); 131 132 return (0); 133 } 134 135 /* 136 * siba_sprom_get_core_power_info() 137 * 138 * Referenced by: 139 * bwn_nphy_tx_power_ctl_setup() 140 * bwn_ppr_load_max_from_sprom() 141 */ 142 int 143 bwn_nphy_get_core_power_info(struct bwn_mac *mac, int core, 144 struct bwn_phy_n_core_pwr_info *c) 145 { 146 struct bwn_softc *sc; 147 const struct bwn_nphy_power_vars *v; 148 uint8_t sromrev; 149 int error; 150 151 sc = mac->mac_sc; 152 153 if (core < 0 || core >= nitems(bwn_nphy_power_vars)) 154 return (EINVAL); 155 156 sromrev = sc->sc_board_info.board_srom_rev; 157 if (sromrev < 4) 158 return (ENXIO); 159 160 v = &bwn_nphy_power_vars[core]; 161 162 /* Any power variables not found in NVRAM (or returning a 163 * shorter array for a particular NVRAM revision) should be zero 164 * initialized */ 165 memset(c, 0x0, sizeof(*c)); 166 167 /* Populate SPROM revision-independent values */ 168 error = bhnd_nvram_getvar_uint8(sc->sc_dev, v->maxp2ga, &c->maxpwr_2g); 169 if (error) 170 return (error); 171 172 /* Populate SPROM revision-specific values */ 173 if (sromrev >= 4 && sromrev <= 10) 174 return (bwn_nphy_get_core_power_info_r4_r10(sc, v, c)); 175 else 176 return (bwn_nphy_get_core_power_info_r11(sc, v, c)); 177 } 178