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#ifndef _GSM_DATA_H
#define _GSM_DATA_H
#include <sys/types.h>
#include <openbsc/timer.h>
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define GSM_MAX_BTS 8
#define BTS_MAX_TRX 8
#define TS_MAX_LCHAN 8
#define HARDCODED_ARFCN 123
/*
* Use the channel. As side effect the lchannel recycle timer
* will be started.
*/
#define LCHAN_RELEASE_TIMEOUT 4, 0
#define use_lchan(lchan) \
do { lchan->use_count++; \
schedule_timer(&lchan->release_timer, LCHAN_RELEASE_TIMEOUT); } while(0);
#define put_lchan(lchan) \
do { lchan->use_count--; } while(0);
/* communications link with a BTS */
struct gsm_bts_link {
struct gsm_bts *bts;
};
enum gsm_call_type {
GSM_CT_NONE,
GSM_CT_MO,
GSM_CT_MT,
};
enum gsm_call_state {
GSM_CSTATE_NULL,
GSM_CSTATE_INITIATED,
GSM_CSTATE_ACTIVE,
GSM_CSTATE_RELEASE_REQ,
};
/* One end of a call */
struct gsm_call {
enum gsm_call_type type;
enum gsm_call_state state;
u_int8_t transaction_id; /* 10.3.2 */
/* the 'local' subscriber */
struct gsm_subscriber *subscr;
};
enum gsm_phys_chan_config {
GSM_PCHAN_NONE,
GSM_PCHAN_CCCH,
GSM_PCHAN_CCCH_SDCCH4,
GSM_PCHAN_TCH_F,
GSM_PCHAN_TCH_H,
GSM_PCHAN_SDCCH8_SACCH8C,
GSM_PCHAN_UNKNOWN,
};
enum gsm_chan_t {
GSM_LCHAN_NONE,
GSM_LCHAN_SDCCH,
GSM_LCHAN_TCH_F,
GSM_LCHAN_TCH_H,
GSM_LCHAN_UNKNOWN,
};
/* Channel Request reason */
enum gsm_chreq_reason_t {
GSM_CHREQ_REASON_EMERG,
GSM_CHREQ_REASON_PAG,
GSM_CHREQ_REASON_CALL,
GSM_CHREQ_REASON_LOCATION_UPD,
GSM_CHREQ_REASON_OTHER,
};
/*
* LOCATION UPDATING REQUEST state
*
* Our current operation is:
* - Get imei/tmsi
* - Accept/Reject according to global policy
*/
struct gsm_loc_updating_operation {
struct timer_list updating_timer;
int waiting_for_imsi : 1;
int waiting_for_imei : 1;
};
struct gsm_lchan {
/* The TS that we're part of */
struct gsm_bts_trx_ts *ts;
/* The logical subslot number in the TS */
u_int8_t nr;
/* The lotical channel type */
enum gsm_chan_t type;
/* To whom we are allocated at the moment */
struct gsm_subscriber *subscr;
/* Timer started to release the channel */
struct timer_list release_timer;
/* local end of a call, if any */
struct gsm_call call;
/* temporary user data, to be removed... and merged into gsm_call */
void *user_data;
/*
* Operations that have a state and might be pending
*/
struct gsm_loc_updating_operation *loc_operation;
/* use count. how many users use this channel */
unsigned int use_count;
};
#define BTS_TRX_F_ACTIVATED 0x0001
/* One Timeslot in a TRX */
struct gsm_bts_trx_ts {
struct gsm_bts_trx *trx;
/* number of this timeslot at the TRX */
u_int8_t nr;
enum gsm_phys_chan_config pchan;
unsigned int flags;
struct gsm_lchan lchan[TS_MAX_LCHAN];
};
/* One TRX in a BTS */
struct gsm_bts_trx {
struct gsm_bts *bts;
/* number of this TRX in the BTS */
u_int8_t nr;
u_int16_t arfcn;
struct gsm_bts_trx_ts ts[8];
};
/* One BTS */
struct gsm_bts {
struct gsm_network *network;
/* number of ths BTS in network */
u_int8_t nr;
/* location area code of this BTS */
u_int8_t location_area_code;
/* Abis network management O&M handle */
struct abis_nm_h *nmh;
/* number of this BTS on given E1 link */
u_int8_t bts_nr;
/* CCCH is on C0 */
struct gsm_bts_trx *c0;
/* transceivers */
int num_trx;
struct gsm_bts_trx trx[BTS_MAX_TRX+1];
};
struct gsm_network {
/* global parameters */
u_int16_t country_code;
u_int16_t network_code;
char *name_long;
char *name_short;
unsigned int num_bts;
/* private lists */
struct gsm_bts bts[GSM_MAX_BTS+1];
/* management of the lower layers to allow the bsc to hook into it */
void (*update_request)(struct gsm_bts *, u_int32_t tmsi, int accepted);
void (*channel_allocated)(struct gsm_lchan *bts, enum gsm_chreq_reason_t);
void (*channel_deallocated)(struct gsm_lchan *bts);
void (*channel_response)(struct gsm_lchan *, int acked);
void (*channel_subscriber_assigned)(struct gsm_lchan *);
void (*call_state_changed)(struct gsm_lchan *, enum gsm_call_state new_state);
};
struct gsm_network *gsm_network_init(unsigned int num_bts, u_int16_t country_code,
u_int16_t network_code);
const char *gsm_pchan_name(enum gsm_phys_chan_config c);
const char *gsm_lchan_name(enum gsm_chan_t c);
const char *gsm_chreq_name(enum gsm_chreq_reason_t c);
enum gsm_e1_event {
EVT_E1_NONE,
EVT_E1_OML_UP,
EVT_E1_RSL_UP,
EVT_E1_OML_DN,
EVT_E1_RSL_DN,
};
#endif
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