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/*! \file l1sap.h */
#pragma once
#include <osmocom/core/prim.h>
/*! PH-SAP related primitives (L1<->L2 SAP) */
enum osmo_ph_prim {
PRIM_PH_DATA, /*!< PH-DATA */
PRIM_PH_RACH, /*!< PH-RANDOM_ACCESS */
PRIM_PH_CONN, /*!< PH-CONNECT */
PRIM_PH_EMPTY_FRAME, /*!< PH-EMPTY_FRAME */
PRIM_PH_RTS, /*!< PH-RTS */
PRIM_MPH_INFO, /*!< MPH-INFO */
PRIM_TCH, /*!< TCH */
PRIM_TCH_RTS, /*!< TCH */
};
extern const struct value_string osmo_ph_prim_names[];
/*! PH-SAP related primitives (L1<->L2 SAP) */
enum osmo_mph_info_type {
PRIM_INFO_TIME, /*!< Current GSM time */
PRIM_INFO_MEAS, /*!< Measurement indication */
PRIM_INFO_ACTIVATE, /*!< Activation of channel */
PRIM_INFO_DEACTIVATE, /*!< Deactivation of channel */
PRIM_INFO_MODIFY, /*!< Mode Modify of channel */
PRIM_INFO_ACT_CIPH, /*!< Activation of ciphering */
PRIM_INFO_DEACT_CIPH, /*!< Deactivation of ciphering */
};
/*! PH-DATA presence information */
enum osmo_ph_pres_info_type {
PRES_INFO_INVALID = 0, /*!< Data is invalid */
PRES_INFO_HEADER = 1, /*!< Only header is present and valid */
PRES_INFO_FIRST = 3, /*!< First half of data + header are valid (2nd half may be present but invalid) */
PRES_INFO_SECOND = 5, /*!< Second half of data + header are valid (1st halfmay be present but invalid) */
PRES_INFO_BOTH = 7, /*!< Both parts + header are present and valid */
PRES_INFO_UNKNOWN
};
/*! for PH-RANDOM_ACCESS.req */
struct ph_rach_req_param {
uint8_t ra; /*!< Random Access */
uint8_t ta; /*!< Timing Advance */
uint8_t tx_power; /*!< Transmit Power */
uint8_t is_combined_ccch;/*!< Are we using a combined CCCH? */
uint16_t offset; /*!< Timing Offset */
};
/*! for PH_RA_IND burstType inforamtion */
enum ph_burst_type {
GSM_L1_BURST_TYPE_NONE = 0,
GSM_L1_BURST_TYPE_ACCESS_0,
GSM_L1_BURST_TYPE_ACCESS_1,
GSM_L1_BURST_TYPE_ACCESS_2
};
/*! for PH-RANDOM_ACCESS.ind */
struct ph_rach_ind_param {
uint8_t chan_nr; /*!< Channel Number (Like RSL) */
uint16_t ra; /*!< Random Access */
uint8_t acc_delay; /*!< Delay in bit periods */
uint32_t fn; /*!< GSM Frame Number at time of RA */
uint8_t is_11bit; /*!< no.of bits in RACH*/
enum ph_burst_type burst_type; /*!< type of burst*/
};
/*! for PH-[UNIT]DATA.{req,ind} | PH-RTS.ind */
struct ph_data_param {
uint8_t link_id; /*!< Link Identifier (Like RSL) */
uint8_t chan_nr; /*!< Channel Number (Like RSL) */
uint32_t fn; /*!< GSM Frame Number */
int8_t rssi; /*!< RSSI of receivedindication */
uint16_t ber10k; /*!< BER in units of 0.01% */
int16_t ta_offs_qbits; /* !< Burst TA Offset in quarter bits */
int16_t lqual_cb; /* !< Link quality in centiBel */
enum osmo_ph_pres_info_type pdch_presence_info; /*!< Info regarding presence/validity of header and data parts */
};
/*! for TCH.{req,ind} | TCH-RTS.ind */
struct ph_tch_param {
uint8_t chan_nr; /*!< Channel Number (Like RSL) */
uint32_t fn; /*!< GSM Frame Number */
int8_t rssi; /*!< RSSI of received indication */
uint8_t marker; /*!< RTP Marker bit (speech onset indicator) */
uint16_t ber10k; /*!< BER in units of 0.01% */
int16_t lqual_cb; /* !< Link quality in centiBel */
};
/*! for PH-CONN.ind */
struct ph_conn_ind_param {
uint32_t fn; /*!< GSM Frame Number */
};
/*! for TIME MPH-INFO.ind */
struct info_time_ind_param {
uint32_t fn; /*!< GSM Frame Number */
};
/*! for MEAS MPH-INFO.ind */
struct info_meas_ind_param {
uint8_t chan_nr; /*!< Channel Number (Like RSL) */
uint32_t fn; /*!< GSM Frame Number */
uint16_t ber10k; /*!< BER in units of 0.01% */
int16_t ta_offs_qbits; /*!< timing advance offset (in qbits) */
int16_t c_i_cb; /*!< C/I ratio in 0.1 dB */
uint8_t is_sub:1; /*!< flags */
uint8_t inv_rssi; /*!< RSSI in dBm * -1 */
};
/*! for {ACTIVATE,DEACTIVATE,MODIFY} MPH-INFO.req */
struct info_act_req_param {
uint8_t chan_nr; /*!< Channel Number (Like RSL) */
uint8_t sacch_only; /*!< \breif Only deactivate SACCH */
};
/*! for {ACTIVATE,DEACTIVATE} MPH-INFO.cnf */
struct info_act_cnf_param {
uint8_t chan_nr; /*!< Channel Number (Like RSL) */
uint8_t cause; /*!< RSL cause in case of nack */
};
/*! for {ACTIVATE,DEACTIVATE} MPH-INFO.{req,cnf} */
struct info_ciph_req_param {
uint8_t chan_nr; /*!< Channel Number (Like RSL) */
uint8_t downlink; /*!< Apply to downlink */
uint8_t uplink; /*!< Apply to uplink */
};
/*! for MPH-INFO.ind */
struct mph_info_param {
enum osmo_mph_info_type type; /*!< Info message type */
union {
struct info_time_ind_param time_ind;
struct info_meas_ind_param meas_ind;
struct info_act_req_param act_req;
struct info_act_cnf_param act_cnf;
struct info_ciph_req_param ciph_req;
} u;
};
/*! primitive header for PH-SAP primitives */
struct osmo_phsap_prim {
struct osmo_prim_hdr oph; /*!< generic primitive header */
union {
struct ph_data_param data;
struct ph_tch_param tch;
struct ph_rach_req_param rach_req;
struct ph_rach_ind_param rach_ind;
struct ph_conn_ind_param conn_ind;
struct mph_info_param info;
} u; /*!< request-specific data */
};
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