167 lines
5.1 KiB
C++
167 lines
5.1 KiB
C++
/* pdch.h
|
|
*
|
|
* Copyright (C) 2012 Ivan Klyuchnikov
|
|
* Copyright (C) 2013 by Holger Hans Peter Freyther
|
|
* Copyright (C) 2018 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
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#include <osmocom/core/linuxlist.h>
|
|
#include "gsm_rlcmac.h"
|
|
}
|
|
|
|
#include <gprs_coding_scheme.h>
|
|
#include <bts.h>
|
|
#endif
|
|
|
|
#include <tbf.h>
|
|
|
|
#include <stdint.h>
|
|
|
|
/* PTCCH (Packet Timing Advance Control Channel) */
|
|
#define PTCCH_TAI_FREE 0x7f /*!< Special value for unused TA Indexes */
|
|
#define PTCCH_TAI_NUM 16 /*!< Number of PTCCH/U slots and thus TA Indexes */
|
|
#define PTCCH_PADDING 0x2b /*!< PTCCH/D messages need to be padded to 23 octets */
|
|
|
|
/*
|
|
* PDCH instance
|
|
*/
|
|
struct gprs_rlcmac_pdch {
|
|
#ifdef __cplusplus
|
|
struct gprs_rlcmac_paging *dequeue_paging();
|
|
struct msgb *packet_paging_request();
|
|
|
|
bool add_paging(uint8_t chan_needed, const uint8_t *mi, uint8_t mi_len);
|
|
|
|
void free_resources();
|
|
|
|
bool is_enabled() const;
|
|
|
|
void enable();
|
|
void disable();
|
|
|
|
/* dispatching of messages */
|
|
int rcv_block(uint8_t *data, uint8_t len, uint32_t fn,
|
|
struct pcu_l1_meas *meas);
|
|
int rcv_block_gprs(uint8_t *data, uint8_t data_len, uint32_t fn,
|
|
struct pcu_l1_meas *meas, GprsCodingScheme cs);
|
|
int rcv_data_block(uint8_t *data, uint8_t data_len, uint32_t fn,
|
|
struct pcu_l1_meas *meas, GprsCodingScheme cs);
|
|
|
|
gprs_rlcmac_bts *bts_data() const;
|
|
BTS *bts() const;
|
|
uint8_t trx_no() const;
|
|
|
|
struct gprs_rlcmac_ul_tbf *ul_tbf_by_tfi(uint8_t tfi);
|
|
struct gprs_rlcmac_dl_tbf *dl_tbf_by_tfi(uint8_t tfi);
|
|
|
|
void attach_tbf(gprs_rlcmac_tbf *tbf);
|
|
void detach_tbf(gprs_rlcmac_tbf *tbf);
|
|
|
|
unsigned num_tbfs(enum gprs_rlcmac_tbf_direction dir) const;
|
|
|
|
void reserve(enum gprs_rlcmac_tbf_direction dir);
|
|
void unreserve(enum gprs_rlcmac_tbf_direction dir);
|
|
unsigned num_reserved(enum gprs_rlcmac_tbf_direction dir) const;
|
|
|
|
uint8_t assigned_usf() const;
|
|
uint32_t assigned_tfi(enum gprs_rlcmac_tbf_direction dir) const;
|
|
#endif
|
|
|
|
uint8_t m_is_enabled; /* TS is enabled */
|
|
uint8_t tsc; /* TSC of this slot */
|
|
uint8_t next_ul_tfi; /* next uplink TBF/TFI to schedule (0..31) */
|
|
uint8_t next_dl_tfi; /* next downlink TBF/TFI to schedule (0..31) */
|
|
uint8_t next_ctrl_prio; /* next kind of ctrl message to schedule */
|
|
struct llist_head paging_list; /* list of paging messages */
|
|
uint32_t last_rts_fn; /* store last frame number of RTS */
|
|
|
|
/* PTCCH (Packet Timing Advance Control Channel) */
|
|
uint8_t ptcch_msg[GSM_MACBLOCK_LEN]; /* 'ready to use' PTCCH/D message */
|
|
#ifdef __cplusplus
|
|
/* Initialize the PTCCH/D message */
|
|
void init_ptcch_msg(void);
|
|
/* Obtain an unused TA Index for a TBF */
|
|
uint8_t reserve_tai(uint8_t ta);
|
|
/* Mark a given TA Index as free, so it can be used again */
|
|
void release_tai(uint8_t tai);
|
|
/* Update the actual Timing Advance value for a given TA Index */
|
|
void update_ta(uint8_t tai, uint8_t ta);
|
|
#endif
|
|
|
|
/* back pointers */
|
|
struct gprs_rlcmac_trx *trx;
|
|
uint8_t ts_no;
|
|
|
|
#ifdef __cplusplus
|
|
private:
|
|
int rcv_control_block(const uint8_t *data, uint8_t data_len, uint32_t fn,
|
|
struct pcu_l1_meas *meas, GprsCodingScheme cs);
|
|
|
|
void rcv_control_ack(Packet_Control_Acknowledgement_t *, uint32_t fn);
|
|
void rcv_control_dl_ack_nack(Packet_Downlink_Ack_Nack_t *, uint32_t fn, struct pcu_l1_meas *meas);
|
|
void rcv_control_egprs_dl_ack_nack(EGPRS_PD_AckNack_t *, uint32_t fn, struct pcu_l1_meas *meas);
|
|
void rcv_resource_request(Packet_Resource_Request_t *t, uint32_t fn, struct pcu_l1_meas *meas);
|
|
void rcv_measurement_report(Packet_Measurement_Report_t *t, uint32_t fn);
|
|
gprs_rlcmac_tbf *tbf_from_list_by_tfi(
|
|
LListHead<gprs_rlcmac_tbf> *tbf_list, uint8_t tfi,
|
|
enum gprs_rlcmac_tbf_direction dir);
|
|
gprs_rlcmac_tbf *tbf_by_tfi(uint8_t tfi,
|
|
enum gprs_rlcmac_tbf_direction dir);
|
|
#endif
|
|
|
|
uint8_t m_num_tbfs[2];
|
|
uint8_t m_num_reserved[2];
|
|
uint8_t m_assigned_usf; /* bit set */
|
|
uint32_t m_assigned_tfi[2]; /* bit set */
|
|
struct gprs_rlcmac_tbf *m_tbfs[2][32];
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
|
|
inline unsigned gprs_rlcmac_pdch::num_tbfs(enum gprs_rlcmac_tbf_direction dir) const
|
|
{
|
|
return m_num_tbfs[dir];
|
|
}
|
|
|
|
inline unsigned gprs_rlcmac_pdch::num_reserved(
|
|
enum gprs_rlcmac_tbf_direction dir) const
|
|
{
|
|
return gprs_rlcmac_pdch::m_num_reserved[dir];
|
|
}
|
|
|
|
inline uint8_t gprs_rlcmac_pdch::assigned_usf() const
|
|
{
|
|
return m_assigned_usf;
|
|
}
|
|
|
|
inline uint32_t gprs_rlcmac_pdch::assigned_tfi(
|
|
enum gprs_rlcmac_tbf_direction dir) const
|
|
{
|
|
return m_assigned_tfi[dir];
|
|
}
|
|
|
|
inline bool gprs_rlcmac_pdch::is_enabled() const
|
|
{
|
|
return m_is_enabled;
|
|
}
|
|
|
|
#endif /* __cplusplus */
|