diff options
author | Harald Welte <laforge@gnumonks.org> | 2010-05-28 09:44:26 +0200 |
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committer | Harald Welte <laforge@gnumonks.org> | 2010-05-28 09:44:26 +0200 |
commit | bf51438a8aeaa67076e209587b83cafe6c4fa4d2 (patch) | |
tree | 23ccc827f6ad1a3fddd97fe66ed9b45342ea8df0 /libosmocore/src/gsm_utils.c | |
parent | 900aeaf41539a0577f33b501b2cc0c525ce4ce34 (diff) |
remove libosmocore from openbsc.git
The idea was great, but it never really worked in reality...
Diffstat (limited to 'libosmocore/src/gsm_utils.c')
-rw-r--r-- | libosmocore/src/gsm_utils.c | 376 |
1 files changed, 0 insertions, 376 deletions
diff --git a/libosmocore/src/gsm_utils.c b/libosmocore/src/gsm_utils.c deleted file mode 100644 index b392fd37c..000000000 --- a/libosmocore/src/gsm_utils.c +++ /dev/null @@ -1,376 +0,0 @@ -/* - * (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de> - * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> - * (C) 2009-2010 by Harald Welte <laforge@gnumonks.org> - * - * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - */ - -//#include <openbsc/gsm_data.h> -#include <osmocore/utils.h> -#include <osmocore/gsm_utils.h> - -#include <stdlib.h> -#include <stdint.h> -#include <string.h> -#include <stdio.h> -#include <errno.h> -#include <ctype.h> - -#include "../config.h" - -/* GSM 03.38 6.2.1 Charachter packing */ -int gsm_7bit_decode(char *text, const uint8_t *user_data, uint8_t length) -{ - int i = 0; - int l = 0; - - /* FIXME: We need to account for user data headers here */ - i += l; - for (; i < length; i ++) - *(text ++) = - ((user_data[(i * 7 + 7) >> 3] << - (7 - ((i * 7 + 7) & 7))) | - (user_data[(i * 7) >> 3] >> - ((i * 7) & 7))) & 0x7f; - *text = '\0'; - - return i - l; -} - - -/* GSM 03.38 6.2.1 Charachter packing */ -int gsm_7bit_encode(uint8_t *result, const char *data) -{ - int i,j = 0; - unsigned char ch1, ch2; - int shift = 0; - - for ( i=0; i<strlen(data); i++ ) { - - ch1 = data[i] & 0x7F; - ch1 = ch1 >> shift; - ch2 = data[(i+1)] & 0x7F; - ch2 = ch2 << (7-shift); - - ch1 = ch1 | ch2; - - result[j++] = ch1; - - shift++; - - if ((shift == 7) && (i+1<strlen(data))) { - shift = 0; - i++; - } - } - - return i; -} - -/* determine power control level for given dBm value, as indicated - * by the tables in chapter 4.1.1 of GSM TS 05.05 */ -int ms_pwr_ctl_lvl(enum gsm_band band, unsigned int dbm) -{ - switch (band) { - case GSM_BAND_450: - case GSM_BAND_480: - case GSM_BAND_750: - case GSM_BAND_900: - case GSM_BAND_810: - case GSM_BAND_850: - if (dbm >= 39) - return 0; - else if (dbm < 5) - return 19; - else { - /* we are guaranteed to have (5 <= dbm < 39) */ - return 2 + ((39 - dbm) / 2); - } - break; - case GSM_BAND_1800: - if (dbm >= 36) - return 29; - else if (dbm >= 34) - return 30; - else if (dbm >= 32) - return 31; - else if (dbm == 31) - return 0; - else { - /* we are guaranteed to have (0 <= dbm < 31) */ - return (30 - dbm) / 2; - } - break; - case GSM_BAND_1900: - if (dbm >= 33) - return 30; - else if (dbm >= 32) - return 31; - else if (dbm == 31) - return 0; - else { - /* we are guaranteed to have (0 <= dbm < 31) */ - return (30 - dbm) / 2; - } - break; - } - return -EINVAL; -} - -int ms_pwr_dbm(enum gsm_band band, uint8_t lvl) -{ - lvl &= 0x1f; - - switch (band) { - case GSM_BAND_450: - case GSM_BAND_480: - case GSM_BAND_750: - case GSM_BAND_900: - case GSM_BAND_810: - case GSM_BAND_850: - if (lvl < 2) - return 39; - else if (lvl < 20) - return 39 - ((lvl - 2) * 2) ; - else - return 5; - break; - case GSM_BAND_1800: - if (lvl < 16) - return 30 - (lvl * 2); - else if (lvl < 29) - return 0; - else - return 36 - ((lvl - 29) * 2); - break; - case GSM_BAND_1900: - if (lvl < 16) - return 30 - (lvl * 2); - else if (lvl < 30) - return -EINVAL; - else - return 33 - (lvl - 30); - break; - } - return -EINVAL; -} - -/* According to TS 08.05 Chapter 8.1.4 */ -int rxlev2dbm(uint8_t rxlev) -{ - if (rxlev > 63) - rxlev = 63; - - return -110 + rxlev; -} - -/* According to TS 08.05 Chapter 8.1.4 */ -uint8_t dbm2rxlev(int dbm) -{ - int rxlev = dbm + 110; - - if (rxlev > 63) - rxlev = 63; - else if (rxlev < 0) - rxlev = 0; - - return rxlev; -} - -const char *gsm_band_name(enum gsm_band band) -{ - switch (band) { - case GSM_BAND_450: - return "GSM450"; - case GSM_BAND_480: - return "GSM450"; - case GSM_BAND_750: - return "GSM750"; - case GSM_BAND_810: - return "GSM810"; - case GSM_BAND_850: - return "GSM850"; - case GSM_BAND_900: - return "GSM900"; - case GSM_BAND_1800: - return "DCS1800"; - case GSM_BAND_1900: - return "PCS1900"; - } - return "invalid"; -} - -enum gsm_band gsm_band_parse(const char* mhz) -{ - while (*mhz && !isdigit(*mhz)) - mhz++; - - if (*mhz == '\0') - return -EINVAL; - - switch (strtol(mhz, NULL, 10)) { - case 450: - return GSM_BAND_450; - case 480: - return GSM_BAND_480; - case 750: - return GSM_BAND_750; - case 810: - return GSM_BAND_810; - case 850: - return GSM_BAND_850; - case 900: - return GSM_BAND_900; - case 1800: - return GSM_BAND_1800; - case 1900: - return GSM_BAND_1900; - default: - return -EINVAL; - } -} - - -#ifdef HAVE_EXECINFO_H -#include <execinfo.h> -void generate_backtrace() -{ - int i, nptrs; - void *buffer[100]; - char **strings; - - nptrs = backtrace(buffer, ARRAY_SIZE(buffer)); - printf("backtrace() returned %d addresses\n", nptrs); - - strings = backtrace_symbols(buffer, nptrs); - if (!strings) - return; - - for (i = 1; i < nptrs; i++) - printf("%s\n", strings[i]); - - free(strings); -} -#endif - -enum gsm_band gsm_arfcn2band(uint16_t arfcn) -{ - if (arfcn & ARFCN_PCS) - return GSM_BAND_1900; - else if (arfcn <= 124) - return GSM_BAND_900; - else if (arfcn >= 955 && arfcn <= 1023) - return GSM_BAND_900; - else if (arfcn >= 128 && arfcn <= 251) - return GSM_BAND_850; - else if (arfcn >= 512 && arfcn <= 885) - return GSM_BAND_1800; - else if (arfcn >= 259 && arfcn <= 293) - return GSM_BAND_450; - else if (arfcn >= 306 && arfcn <= 340) - return GSM_BAND_480; - else if (arfcn >= 350 && arfcn <= 425) - return GSM_BAND_810; - else if (arfcn >= 438 && arfcn <= 511) - return GSM_BAND_750; - else - return GSM_BAND_1800; -} - -/* Convert an ARFCN to the frequency in MHz * 10 */ -uint16_t gsm_arfcn2freq10(uint16_t arfcn, int uplink) -{ - uint16_t freq10_ul; - uint16_t freq10_dl; - - if (arfcn & ARFCN_PCS) { - /* DCS 1900 */ - arfcn &= ~ARFCN_PCS; - freq10_ul = 18502 + 2 * (arfcn-512); - freq10_dl = freq10_ul + 800; - } else if (arfcn <= 124) { - /* Primary GSM + ARFCN 0 of E-GSM */ - freq10_ul = 8900 + 2 * arfcn; - freq10_dl = freq10_ul + 450; - } else if (arfcn >= 955 && arfcn <= 1023) { - /* E-GSM and R-GSM */ - freq10_ul = 8900 + 2 * (arfcn - 1024); - freq10_dl = freq10_ul + 450; - } else if (arfcn >= 128 && arfcn <= 251) { - /* GSM 850 */ - freq10_ul = 8242 + 2 * (arfcn - 128); - freq10_dl = freq10_ul + 450; - } else if (arfcn >= 512 && arfcn <= 885) { - /* DCS 1800 */ - freq10_ul = 17102 + 2 * (arfcn - 512); - freq10_dl = freq10_ul + 950; - } else if (arfcn >= 259 && arfcn <= 293) { - /* GSM 450 */ - freq10_ul = 4506 + 2 * (arfcn - 259); - freq10_dl = freq10_ul + 100; - } else if (arfcn >= 306 && arfcn <= 340) { - /* GSM 480 */ - freq10_ul = 4790 + 2 * (arfcn - 306); - freq10_dl = freq10_ul + 100; - } else if (arfcn >= 350 && arfcn <= 425) { - /* GSM 810 */ - freq10_ul = 8060 + 2 * (arfcn - 350); - freq10_dl = freq10_ul + 450; - } else if (arfcn >= 438 && arfcn <= 511) { - /* GSM 750 */ - freq10_ul = 7472 + 2 * (arfcn - 438); - freq10_dl = freq10_ul + 300; - } else - return 0xffff; - - if (uplink) - return freq10_ul; - else - return freq10_dl; -} - -void gsm_fn2gsmtime(struct gsm_time *time, uint32_t fn) -{ - time->fn = fn; - time->t1 = time->fn / (26*51); - time->t2 = time->fn % 26; - time->t3 = time->fn % 51; - time->tc = (time->fn / 51) % 8; -} - -uint32_t gsm_gsmtime2fn(struct gsm_time *time) -{ - /* TS 05.02 Chapter 4.3.3 TDMA frame number */ - return (51 * ((time->t3 - time->t2 + 26) % 26) + time->t3 + (26 * 51 * time->t1)); -} - -/* TS 03.03 Chapter 2.6 */ -int gprs_tlli_type(uint32_t tlli) -{ - if ((tlli & 0xc0000000) == 0xc0000000) - return TLLI_LOCAL; - else if ((tlli & 0xc0000000) == 0x80000000) - return TLLI_FOREIGN; - else if ((tlli & 0xf8000000) == 0x78000000) - return TLLI_RANDOM; - else if ((tlli & 0xf8000000) == 0x70000000) - return TLLI_AUXILIARY; - - return TLLI_RESERVED; -} |