Osmocom Packet control Unit (PCU): Network-side GPRS (RLC/MAC); BTS- or BSC-colocated https://osmocom.org/projects/osmopcu
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osmo-pcu/src/mslot_class.h

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/* mslot_class.h
*
* Copyright (C) 2012 Ivan Klyuchnikov
* Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu>
* Copyright (C) 2013 by Holger Hans Peter Freyther
* Copyright (C) 2017 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#pragma once
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
/* 3GPP TS 05.02 Annex B.1 */
#define MS_NA 255 /* N/A */
#define MS_A 254 /* 1 with hopping, 0 without */
#define MS_B 253 /* 1 with hopping, 0 without (change Rx to Tx)*/
#define MS_C 252 /* 1 with hopping, 0 without (change Tx to Rx)*/
#define MS_TO 251 /* 31 symbol periods (this can be provided by a TA offset, i.e. a minimum TA value) */
#define DEFAULT_MSLOT_CLASS 12
#define NO_FREE_TFI 0xffffffff
enum { MASK_TT = 0, MASK_TR = 1 };
/* multislot class selection routines */
uint8_t mslot_class_get_ta(uint8_t ms_cl);
uint8_t mslot_class_get_tb(uint8_t ms_cl);
uint8_t mslot_class_get_ra(uint8_t ms_cl, uint8_t ta);
uint8_t mslot_class_get_rb(uint8_t ms_cl, uint8_t ta);
uint8_t mslot_class_get_tx(uint8_t ms_cl);
uint8_t mslot_class_get_rx(uint8_t ms_cl);
uint8_t mslot_class_get_sum(uint8_t ms_cl);
uint8_t mslot_class_get_type(uint8_t ms_cl);
uint8_t mslot_class_max();
/* multislot allocation helper routines */
void mslot_fill_rx_mask(uint8_t mslot_class, uint8_t num_tx, uint8_t *rx_mask);
int8_t find_free_usf(uint8_t usf_map);
int8_t find_free_tfi(uint32_t tfi_map);
void masked_override_with(char *buf, uint8_t mask, char set_char);
void ts_format(char *buf, uint8_t dl_mask, uint8_t ul_mask);
uint16_t mslot_wrap_window(uint16_t win);
bool mslot_test_and_set_bit(uint32_t *bits, size_t elem);
int16_t mslot_filter_bad(uint8_t mask, uint8_t ul_slots, uint8_t dl_slots, uint16_t rx_valid_win);