include/l1ctl_proto.h

   1 /* Messages to be sent between the different layers */
   2
   3 /* (C) 2010 by Harald Welte <laforge@gnumonks.org>
   4  * (C) 2010 by Holger Hans Peter Freyther
   5  *
   6  * All Rights Reserved
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  *
  22  */
  23
  24 #ifndef __L1CTL_PROTO_H__
  25 #define __L1CTL_PROTO_H__
  26
  27 enum {
  28         _L1CTL_NONE             = 0,
  29         L1CTL_FBSB_REQ,
  30         L1CTL_FBSB_CONF,
  31         L1CTL_DATA_IND,
  32         L1CTL_RACH_REQ,
  33         L1CTL_DM_EST_REQ,
  34         L1CTL_DATA_REQ,
  35         L1CTL_RESET_IND,
  36         L1CTL_PM_REQ,           /* power measurement */
  37         L1CTL_PM_CONF,          /* power measurement */
  38         L1CTL_ECHO_REQ,
  39         L1CTL_ECHO_CONF,
  40         L1CTL_RACH_CONF,
  41         L1CTL_RESET_REQ,
  42         L1CTL_RESET_CONF,
  43         L1CTL_DATA_CONF,
  44         L1CTL_CCCH_MODE_REQ,
  45         L1CTL_CCCH_MODE_CONF,
  46         L1CTL_DM_REL_REQ,
  47         L1CTL_PARAM_REQ,
  48         L1CTL_DM_FREQ_REQ,
  49         L1CTL_CRYPTO_REQ,
  50         L1CTL_SIM_REQ,
  51         L1CTL_SIM_CONF,
  52         L1CTL_TCH_MODE_REQ,
  53         L1CTL_TCH_MODE_CONF,
  54         L1CTL_NEIGH_PM_REQ,
  55         L1CTL_NEIGH_PM_IND,
  56 };
  57
  58 enum ccch_mode {
  59         CCCH_MODE_NONE = 0,
  60         CCCH_MODE_NON_COMBINED,
  61         CCCH_MODE_COMBINED,
  62 };
  63
  64 enum neigh_mode {
  65         NEIGH_MODE_NONE = 0,
  66         NEIGH_MODE_PM,
  67         NEIGH_MODE_SB,
  68 };
  69
  70 /*
  71  * NOTE: struct size. We do add manual padding out of the believe
  72  * that it will avoid some unaligned access.
  73  */
  74
  75 /* there are no more messages in a sequence */
  76 #define L1CTL_F_DONE    0x01
  77
  78 struct l1ctl_hdr {
  79         uint8_t msg_type;
  80         uint8_t flags;
  81         uint8_t padding[2];
  82         uint8_t data[0];
  83 } __attribute__((packed));
  84
  85 /*
  86  * downlink info ... down from the BTS..
  87  */
  88 struct l1ctl_info_dl {
  89         /* GSM 08.58 channel number (9.3.1) */
  90         uint8_t chan_nr;
  91         /* GSM 08.58 link identifier (9.3.2) */
  92         uint8_t link_id;
  93         /* the ARFCN and the band. FIXME: what about MAIO? */
  94         uint16_t band_arfcn;
  95
  96         uint32_t frame_nr;
  97
  98         uint8_t rx_level;       /* 0 .. 63 in typical GSM notation (dBm+110) */
  99         uint8_t snr;            /* Signal/Noise Ration (dB) */
 100         uint8_t num_biterr;
 101         uint8_t fire_crc;
 102
 103         uint8_t payload[0];
 104 } __attribute__((packed));
 105
 106 /* new CCCH was found. This is following the header */
 107 struct l1ctl_fbsb_conf {
 108         int16_t initial_freq_err;
 109         uint8_t result;
 110         uint8_t bsic;
 111         /* FIXME: contents of cell_info ? */
 112 } __attribute__((packed));
 113
 114 /* CCCH mode was changed */
 115 struct l1ctl_ccch_mode_conf {
 116         uint8_t ccch_mode;      /* enum ccch_mode */
 117         uint8_t padding[3];
 118 } __attribute__((packed));
 119
 120 /* TCH mode was changed */
 121 struct l1ctl_tch_mode_conf {
 122         uint8_t tch_mode;       /* enum tch_mode */
 123         uint8_t padding[3];
 124 } __attribute__((packed));
 125
 126 /* data on the CCCH was found. This is following the header */
 127 struct l1ctl_data_ind {
 128         uint8_t data[23];
 129 } __attribute__((packed));
 130
 131 /*
 132  * uplink info
 133  */
 134 struct l1ctl_info_ul {
 135         /* GSM 08.58 channel number (9.3.1) */
 136         uint8_t chan_nr;
 137         /* GSM 08.58 link identifier (9.3.2) */
 138         uint8_t link_id;
 139         uint8_t padding[2];
 140
 141         uint8_t payload[0];
 142 } __attribute__((packed));
 143
 144 /*
 145  * msg for FBSB_REQ
 146  * the l1_info_ul header is in front
 147  */
 148 struct l1ctl_fbsb_req {
 149         uint16_t band_arfcn;
 150         uint16_t timeout;       /* in TDMA frames */
 151
 152         uint16_t freq_err_thresh1;
 153         uint16_t freq_err_thresh2;
 154
 155         uint8_t num_freqerr_avg;
 156         uint8_t flags;          /* L1CTL_FBSB_F_* */
 157         uint8_t sync_info_idx;
 158         uint8_t ccch_mode;      /* enum ccch_mode */
 159 } __attribute__((packed));
 160
 161 #define L1CTL_FBSB_F_FB0        (1 << 0)
 162 #define L1CTL_FBSB_F_FB1        (1 << 1)
 163 #define L1CTL_FBSB_F_SB         (1 << 2)
 164 #define L1CTL_FBSB_F_FB01SB     (L1CTL_FBSB_F_FB0|L1CTL_FBSB_F_FB1|L1CTL_FBSB_F_SB)
 165
 166 /*
 167  * msg for CCCH_MODE_REQ
 168  * the l1_info_ul header is in front
 169  */
 170 struct l1ctl_ccch_mode_req {
 171         uint8_t ccch_mode;      /* enum ccch_mode */
 172         uint8_t padding[3];
 173 } __attribute__((packed));
 174
 175 /*
 176  * msg for TCH_MODE_REQ
 177  * the l1_info_ul header is in front
 178  */
 179 struct l1ctl_tch_mode_req {
 180         uint8_t tch_mode;       /* enum gsm48_chan_mode */
 181         uint8_t padding[3];
 182 } __attribute__((packed));
 183
 184 /* the l1_info_ul header is in front */
 185 struct l1ctl_rach_req {
 186         uint8_t ra;
 187         uint8_t combined;
 188         uint16_t offset;
 189 } __attribute__((packed));
 190
 191 /* the l1_info_ul header is in front */
 192 struct l1ctl_par_req {
 193         int8_t ta;
 194         uint8_t tx_power;
 195         uint8_t padding[2];
 196 } __attribute__((packed));
 197
 198 struct l1ctl_h0 {
 199         uint16_t band_arfcn;
 200 } __attribute__((packed));
 201
 202 struct l1ctl_h1 {
 203         uint8_t hsn;
 204         uint8_t maio;
 205         uint8_t n;
 206         uint8_t _padding[1];
 207         uint16_t ma[64];
 208 } __attribute__((packed));
 209
 210 struct l1ctl_dm_est_req {
 211         uint8_t tsc;
 212         uint8_t h;
 213         union {
 214                 struct l1ctl_h0 h0;
 215                 struct l1ctl_h1 h1;
 216         };
 217         uint8_t tch_mode;
 218         uint8_t _padding[1];
 219 } __attribute__((packed));
 220
 221 struct l1ctl_dm_freq_req {
 222         uint16_t fn;
 223         uint8_t tsc;
 224         uint8_t h;
 225         union {
 226                 struct l1ctl_h0 h0;
 227                 struct l1ctl_h1 h1;
 228         };
 229 } __attribute__((packed));
 230
 231 struct l1ctl_crypto_req {
 232         uint8_t algo;
 233         uint8_t key[0];
 234 } __attribute__((packed));
 235
 236 struct l1ctl_pm_req {
 237         uint8_t type;
 238         uint8_t padding[3];
 239
 240         union {
 241                 struct {
 242                         uint16_t band_arfcn_from;
 243                         uint16_t band_arfcn_to;
 244                 } range;
 245         };
 246 } __attribute__((packed));
 247
 248 /* a single L1CTL_PM response */
 249 struct l1ctl_pm_conf {
 250         uint16_t band_arfcn;
 251         uint8_t pm[2];
 252 } __attribute__((packed));
 253
 254 enum l1ctl_reset_type {
 255         L1CTL_RES_T_BOOT,       /* only _IND */
 256         L1CTL_RES_T_FULL,
 257         L1CTL_RES_T_SCHED,
 258 };
 259
 260 /* argument to L1CTL_RESET_REQ and L1CTL_RESET_IND */
 261 struct l1ctl_reset {
 262         uint8_t type;
 263         uint8_t pad[3];
 264 } __attribute__((packed));
 265
 266 struct l1ctl_neigh_pm_req {
 267         uint8_t n;
 268         uint8_t padding[1];
 269         uint16_t band_arfcn[64];
 270 } __attribute__((packed));
 271
 272 /* neighbour cell measurement results */
 273 struct l1ctl_neigh_pm_ind {
 274         uint16_t band_arfcn;
 275         uint8_t pm[2];
 276 } __attribute__((packed));
 277
 278 #endif /* __L1CTL_PROTO_H__ */