Harald Welte | a082a69 | 2017-07-15 15:58:13 +0200 | [diff] [blame] | 1 | /* Encoding/Decoding routines for GSM System Information messages |
| 2 | * according to 3GPP TS 44.018 Version 12.3.0 Release 12 */ |
| 3 | |
| 4 | /* (C) 2017 by Harald Welte <laforge@gnumonks.org> */ |
| 5 | |
| 6 | module GSM_Types { |
| 7 | |
| 8 | import from General_Types all; |
| 9 | import from Osmocom_Types all; |
| 10 | |
Harald Welte | bdc5dbd | 2017-07-16 00:00:43 +0200 | [diff] [blame] | 11 | type integer GsmArfcn (0..1023); |
| 12 | type integer UmtsArfcn (0..16383); |
| 13 | type integer UmtsScramblingCode (0..511); |
Harald Welte | d2e342f | 2017-07-16 07:34:13 +0200 | [diff] [blame] | 14 | const integer GsmMaxFrameNumber := 26*51*2048; |
| 15 | type integer GsmFrameNumber (0..GsmMaxFrameNumber); |
| 16 | type integer GsmRxLev (0..63); |
| 17 | type integer GsmTsc (0..7) with { variant "FIELDLENGTH(8)" }; |
| 18 | type uint32_t GsmTmsi; |
Harald Welte | 484160b | 2017-07-28 13:30:24 +0200 | [diff] [blame] | 19 | type uint32_t GprsTlli; |
Harald Welte | bdc5dbd | 2017-07-16 00:00:43 +0200 | [diff] [blame] | 20 | |
Harald Welte | 1dcc371 | 2017-08-01 00:05:52 +0200 | [diff] [blame] | 21 | type enumerated GprsCodingScheme { |
| 22 | CS1, CS2, CS3, CS4 |
| 23 | }; |
| 24 | |
Harald Welte | d2e342f | 2017-07-16 07:34:13 +0200 | [diff] [blame] | 25 | /* 10.5.2.8 */ |
| 26 | type enumerated ChannelNeeded { |
| 27 | CHAN_NEED_ANY (0), |
| 28 | CHAN_NEED_SDCCH (1), |
| 29 | CHAN_NEED_TCH_F (2), |
| 30 | CHAN_NEED_TCH_H (3) |
| 31 | } with { variant "FIELDLENGTH(2)" }; |
| 32 | type record ChannelNeeded12 { |
| 33 | ChannelNeeded second, |
| 34 | ChannelNeeded first |
| 35 | } with { variant "" }; |
| 36 | |
Harald Welte | d2e342f | 2017-07-16 07:34:13 +0200 | [diff] [blame] | 37 | |
Harald Welte | 0c8d5c0 | 2017-07-16 18:53:58 +0200 | [diff] [blame] | 38 | /* TS 48.058 9.3.1 Channel Number IE */ |
| 39 | type enumerated RslChanNr0 { |
Harald Welte | 6f3c223 | 2017-07-30 17:17:12 +0200 | [diff] [blame] | 40 | RSL_CHAN_NR_INVALID ('00000'B), |
| 41 | RSL_CHAN_NR_Bm_ACCH ('00001'B), |
| 42 | RSL_CHAN_NR_BCCH ('10000'B), |
| 43 | RSL_CHAN_NR_RACH ('10001'B), |
| 44 | RSL_CHAN_NR_PCH_AGCH ('10010'B), |
| 45 | RSL_CHAN_NR_OSMO_PDCH ('11000'B) |
Harald Welte | c84d847 | 2017-07-30 00:49:56 +0200 | [diff] [blame] | 46 | } with { variant "FIELDLENGTH(5)" variant "FIELDORDER(msb)" }; |
Harald Welte | 0c8d5c0 | 2017-07-16 18:53:58 +0200 | [diff] [blame] | 47 | |
| 48 | type record RslChanNr2 { |
| 49 | BIT4 tag ('0001'B), |
| 50 | uint1_t sub_chan |
Harald Welte | c84d847 | 2017-07-30 00:49:56 +0200 | [diff] [blame] | 51 | } with { variant "FIELDLENGTH(5)" variant "FIELDORDER(msb)" }; |
Harald Welte | 0c8d5c0 | 2017-07-16 18:53:58 +0200 | [diff] [blame] | 52 | |
| 53 | type record RslChanNr4 { |
| 54 | BIT3 tag ('001'B), |
| 55 | uint2_t sub_chan |
Harald Welte | c84d847 | 2017-07-30 00:49:56 +0200 | [diff] [blame] | 56 | } with { variant "FIELDLENGTH(5)" variant "FIELDORDER(msb)" }; |
Harald Welte | 0c8d5c0 | 2017-07-16 18:53:58 +0200 | [diff] [blame] | 57 | |
| 58 | type record RslChanNr8 { |
| 59 | BIT2 tag ('01'B), |
| 60 | uint3_t sub_chan |
Harald Welte | c84d847 | 2017-07-30 00:49:56 +0200 | [diff] [blame] | 61 | } with { variant "FIELDLENGTH(5)" variant "FIELDORDER(msb)" }; |
Harald Welte | 0c8d5c0 | 2017-07-16 18:53:58 +0200 | [diff] [blame] | 62 | |
| 63 | type union RslChanNrU { |
| 64 | RslChanNr0 ch0, |
| 65 | RslChanNr2 lm, |
| 66 | RslChanNr4 sdcch4, |
| 67 | RslChanNr8 sdcch8 |
| 68 | } with { |
| 69 | variant "TAG(lm, tag = '0001'B; |
| 70 | sdcch4, tag = '001'B; |
| 71 | sdcch8, tag = '01'B; |
| 72 | ch0, OTHERWISE)" |
| 73 | variant "FIELDLENGTH(5)" |
Harald Welte | c84d847 | 2017-07-30 00:49:56 +0200 | [diff] [blame] | 74 | variant "FIELDORDER(msb)" |
Harald Welte | 0c8d5c0 | 2017-07-16 18:53:58 +0200 | [diff] [blame] | 75 | }; |
| 76 | |
| 77 | type record RslChannelNr { |
| 78 | RslChanNrU u, |
| 79 | uint3_t tn |
Harald Welte | c84d847 | 2017-07-30 00:49:56 +0200 | [diff] [blame] | 80 | } with { variant "FIELDLENGTH(8)" variant "FIELDORDER(msb)" }; |
Harald Welte | 0c8d5c0 | 2017-07-16 18:53:58 +0200 | [diff] [blame] | 81 | |
| 82 | template RslChannelNr t_RslChanNr0(template uint3_t tn, template RslChanNr0 cht) := { |
| 83 | u := { ch0 := cht }, |
| 84 | tn := tn |
| 85 | } |
| 86 | |
| 87 | template RslChannelNr t_RslChanNr_RACH(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_RACH); |
| 88 | template RslChannelNr t_RslChanNr_BCCH(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_BCCH); |
| 89 | template RslChannelNr t_RslChanNr_PCH_AGCH(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_PCH_AGCH); |
| 90 | template RslChannelNr t_RslChanNr_Bm(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_Bm_ACCH); |
Harald Welte | 1dcc371 | 2017-08-01 00:05:52 +0200 | [diff] [blame] | 91 | template RslChannelNr t_RslChanNr_PDCH(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_OSMO_PDCH); |
Harald Welte | 0c8d5c0 | 2017-07-16 18:53:58 +0200 | [diff] [blame] | 92 | template RslChannelNr t_RslChanNr_Lm(template uint3_t tn, uint1_t sub_slot) := { |
| 93 | u := { lm := { tag := '0001'B, sub_chan := sub_slot } }, |
| 94 | tn := tn |
| 95 | } |
| 96 | template RslChannelNr t_RslChanNr_SDCCH4(template uint3_t tn, template uint2_t sub_slot) := { |
| 97 | u := { sdcch4 := { tag := '001'B, sub_chan := sub_slot } }, |
| 98 | tn := tn |
| 99 | } |
| 100 | template RslChannelNr t_RslChanNr_SDCCH8(template uint3_t tn, template uint3_t sub_slot) := { |
| 101 | u := { sdcch8 := { tag := '01'B, sub_chan := sub_slot } }, |
| 102 | tn := tn |
| 103 | } |
Harald Welte | d2e342f | 2017-07-16 07:34:13 +0200 | [diff] [blame] | 104 | |
Harald Welte | b33e727 | 2017-07-16 21:04:12 +0200 | [diff] [blame] | 105 | /* TS 48.058 9.3.2 Link ID */ |
| 106 | type enumerated RslLinkIdC { |
| 107 | FACCH_SDCCH (0), |
| 108 | SACCH (1) |
| 109 | } with { variant "FIELDLENGTH(2)" }; |
| 110 | |
| 111 | type enumerated RslSapi0Prio { |
| 112 | SAPI0_PRIO_NORMAL (0), |
| 113 | SAPI0_PRIO_HIGH (1), |
| 114 | SAPI0_PRIO_LOW (2) |
| 115 | } with { variant "FIELDLENGTH(2)" }; |
| 116 | |
| 117 | type uint3_t GsmSapi; |
| 118 | |
| 119 | type record RslLinkId { |
| 120 | RslLinkIdC c, |
| 121 | boolean na, |
| 122 | RslSapi0Prio prio, |
| 123 | GsmSapi sapi |
| 124 | } with { variant "" }; |
| 125 | |
| 126 | template RslLinkId tr_RslLinkId := { |
| 127 | c := ?, |
| 128 | na := ?, |
| 129 | prio := ?, |
| 130 | sapi := ? |
| 131 | }; |
| 132 | |
| 133 | template RslLinkId tr_RslLinkID_DCCH(template GsmSapi sapi) modifies tr_RslLinkId := { |
| 134 | c := FACCH_SDCCH, |
| 135 | na := false, |
| 136 | sapi := sapi |
| 137 | }; |
| 138 | |
| 139 | template RslLinkId tr_RslLinkID_SACCH(template GsmSapi sapi) modifies tr_RslLinkId := { |
| 140 | c := SACCH, |
| 141 | na := false, |
| 142 | sapi := sapi |
| 143 | }; |
| 144 | |
| 145 | template RslLinkId ts_RslLinkID_DCCH(GsmSapi sapi) := { |
| 146 | c := FACCH_SDCCH, |
| 147 | na := false, |
| 148 | prio := SAPI0_PRIO_NORMAL, |
| 149 | sapi := sapi |
| 150 | }; |
| 151 | |
Harald Welte | cb5d1fb | 2017-07-17 21:00:15 +0200 | [diff] [blame] | 152 | template RslLinkId ts_RslLinkID_SACCH(GsmSapi sapi) := { |
| 153 | c := SACCH, |
| 154 | na := false, |
| 155 | prio := SAPI0_PRIO_NORMAL, |
| 156 | sapi := sapi |
Harald Welte | b33e727 | 2017-07-16 21:04:12 +0200 | [diff] [blame] | 157 | }; |
| 158 | |
Harald Welte | a082a69 | 2017-07-15 15:58:13 +0200 | [diff] [blame] | 159 | } with { encode "RAW"; variant "FIELDORDER(msb)" } |