drivers/net/wireless/brcm80211/brcmutil/d11.c

   1 /*
   2  * Copyright (c) 2013 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 /*********************channel spec common functions*********************/
  17
  18 #include <linux/module.h>
  19
  20 #include <brcmu_utils.h>
  21 #include <brcmu_wifi.h>
  22 #include <brcmu_d11.h>
  23
  24 static void brcmu_d11n_encchspec(struct brcmu_chan *ch)
  25 {
  26         ch->chspec = ch->chnum & BRCMU_CHSPEC_CH_MASK;
  27
  28         switch (ch->bw) {
  29         case BRCMU_CHAN_BW_20:
  30                 ch->chspec |= BRCMU_CHSPEC_D11N_BW_20 | BRCMU_CHSPEC_D11N_SB_N;
  31                 break;
  32         case BRCMU_CHAN_BW_40:
  33         default:
  34                 WARN_ON_ONCE(1);
  35                 break;
  36         }
  37
  38         if (ch->chnum <= CH_MAX_2G_CHANNEL)
  39                 ch->chspec |= BRCMU_CHSPEC_D11N_BND_2G;
  40         else
  41                 ch->chspec |= BRCMU_CHSPEC_D11N_BND_5G;
  42 }
  43
  44 static void brcmu_d11ac_encchspec(struct brcmu_chan *ch)
  45 {
  46         ch->chspec = ch->chnum & BRCMU_CHSPEC_CH_MASK;
  47
  48         switch (ch->bw) {
  49         case BRCMU_CHAN_BW_20:
  50                 ch->chspec |= BRCMU_CHSPEC_D11AC_BW_20;
  51                 break;
  52         case BRCMU_CHAN_BW_40:
  53         case BRCMU_CHAN_BW_80:
  54         case BRCMU_CHAN_BW_80P80:
  55         case BRCMU_CHAN_BW_160:
  56         default:
  57                 WARN_ON_ONCE(1);
  58                 break;
  59         }
  60
  61         if (ch->chnum <= CH_MAX_2G_CHANNEL)
  62                 ch->chspec |= BRCMU_CHSPEC_D11AC_BND_2G;
  63         else
  64                 ch->chspec |= BRCMU_CHSPEC_D11AC_BND_5G;
  65 }
  66
  67 static void brcmu_d11n_decchspec(struct brcmu_chan *ch)
  68 {
  69         u16 val;
  70
  71         ch->chnum = (u8)(ch->chspec & BRCMU_CHSPEC_CH_MASK);
  72
  73         switch (ch->chspec & BRCMU_CHSPEC_D11N_BW_MASK) {
  74         case BRCMU_CHSPEC_D11N_BW_20:
  75                 ch->bw = BRCMU_CHAN_BW_20;
  76                 break;
  77         case BRCMU_CHSPEC_D11N_BW_40:
  78                 ch->bw = BRCMU_CHAN_BW_40;
  79                 val = ch->chspec & BRCMU_CHSPEC_D11N_SB_MASK;
  80                 if (val == BRCMU_CHSPEC_D11N_SB_L) {
  81                         ch->sb = BRCMU_CHAN_SB_L;
  82                         ch->chnum -= CH_10MHZ_APART;
  83                 } else {
  84                         ch->sb = BRCMU_CHAN_SB_U;
  85                         ch->chnum += CH_10MHZ_APART;
  86                 }
  87                 break;
  88         default:
  89                 WARN_ON_ONCE(1);
  90                 break;
  91         }
  92
  93         switch (ch->chspec & BRCMU_CHSPEC_D11N_BND_MASK) {
  94         case BRCMU_CHSPEC_D11N_BND_5G:
  95                 ch->band = BRCMU_CHAN_BAND_5G;
  96                 break;
  97         case BRCMU_CHSPEC_D11N_BND_2G:
  98                 ch->band = BRCMU_CHAN_BAND_2G;
  99                 break;
 100         default:
 101                 WARN_ON_ONCE(1);
 102                 break;
 103         }
 104 }
 105
 106 static void brcmu_d11ac_decchspec(struct brcmu_chan *ch)
 107 {
 108         u16 val;
 109
 110         ch->chnum = (u8)(ch->chspec & BRCMU_CHSPEC_CH_MASK);
 111
 112         switch (ch->chspec & BRCMU_CHSPEC_D11AC_BW_MASK) {
 113         case BRCMU_CHSPEC_D11AC_BW_20:
 114                 ch->bw = BRCMU_CHAN_BW_20;
 115                 break;
 116         case BRCMU_CHSPEC_D11AC_BW_40:
 117                 ch->bw = BRCMU_CHAN_BW_40;
 118                 val = ch->chspec & BRCMU_CHSPEC_D11AC_SB_MASK;
 119                 if (val == BRCMU_CHSPEC_D11AC_SB_L) {
 120                         ch->sb = BRCMU_CHAN_SB_L;
 121                         ch->chnum -= CH_10MHZ_APART;
 122                 } else if (val == BRCMU_CHSPEC_D11AC_SB_U) {
 123                         ch->sb = BRCMU_CHAN_SB_U;
 124                         ch->chnum += CH_10MHZ_APART;
 125                 } else {
 126                         WARN_ON_ONCE(1);
 127                 }
 128                 break;
 129         case BRCMU_CHSPEC_D11AC_BW_80:
 130                 ch->bw = BRCMU_CHAN_BW_80;
 131                 break;
 132         case BRCMU_CHSPEC_D11AC_BW_8080:
 133         case BRCMU_CHSPEC_D11AC_BW_160:
 134         default:
 135                 WARN_ON_ONCE(1);
 136                 break;
 137         }
 138
 139         switch (ch->chspec & BRCMU_CHSPEC_D11AC_BND_MASK) {
 140         case BRCMU_CHSPEC_D11AC_BND_5G:
 141                 ch->band = BRCMU_CHAN_BAND_5G;
 142                 break;
 143         case BRCMU_CHSPEC_D11AC_BND_2G:
 144                 ch->band = BRCMU_CHAN_BAND_2G;
 145                 break;
 146         default:
 147                 WARN_ON_ONCE(1);
 148                 break;
 149         }
 150 }
 151
 152 void brcmu_d11_attach(struct brcmu_d11inf *d11inf)
 153 {
 154         if (d11inf->io_type == BRCMU_D11N_IOTYPE) {
 155                 d11inf->encchspec = brcmu_d11n_encchspec;
 156                 d11inf->decchspec = brcmu_d11n_decchspec;
 157         } else {
 158                 d11inf->encchspec = brcmu_d11ac_encchspec;
 159                 d11inf->decchspec = brcmu_d11ac_decchspec;
 160         }
 161 }
 162 EXPORT_SYMBOL(brcmu_d11_attach);