diff options
Diffstat (limited to 'src/osmo-bts-trx/l1_if.h')
| -rw-r--r-- | src/osmo-bts-trx/l1_if.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/osmo-bts-trx/l1_if.h b/src/osmo-bts-trx/l1_if.h new file mode 100644 index 00000000..278537e1 --- /dev/null +++ b/src/osmo-bts-trx/l1_if.h @@ -0,0 +1,179 @@ +#ifndef L1_IF_H_TRX +#define L1_IF_H_TRX + +/* These types define the different channels on a multiframe. + * Each channel has queues and can be activated individually. + */ +enum trx_chan_type { + TRXC_IDLE = 0, + TRXC_FCCH, + TRXC_SCH, + TRXC_BCCH, + TRXC_RACH, + TRXC_CCCH, + TRXC_TCHF, + TRXC_TCHH_0, + TRXC_TCHH_1, + TRXC_SDCCH4_0, + TRXC_SDCCH4_1, + TRXC_SDCCH4_2, + TRXC_SDCCH4_3, + TRXC_SDCCH8_0, + TRXC_SDCCH8_1, + TRXC_SDCCH8_2, + TRXC_SDCCH8_3, + TRXC_SDCCH8_4, + TRXC_SDCCH8_5, + TRXC_SDCCH8_6, + TRXC_SDCCH8_7, + TRXC_SACCHTF, + TRXC_SACCHTH_0, + TRXC_SACCHTH_1, + TRXC_SACCH4_0, + TRXC_SACCH4_1, + TRXC_SACCH4_2, + TRXC_SACCH4_3, + TRXC_SACCH8_0, + TRXC_SACCH8_1, + TRXC_SACCH8_2, + TRXC_SACCH8_3, + TRXC_SACCH8_4, + TRXC_SACCH8_5, + TRXC_SACCH8_6, + TRXC_SACCH8_7, + TRXC_PDTCH, + TRXC_PTCCH, + _TRX_CHAN_MAX +}; + +/* States each channel on a multiframe */ +struct trx_chan_state { + /* scheduler */ + uint8_t active; /* Channel is active */ + ubit_t *dl_bursts; /* burst buffer for TX */ + sbit_t *ul_bursts; /* burst buffer for RX */ + uint32_t ul_first_fn; /* fn of first burst */ + uint8_t ul_mask; /* mask of received bursts */ + + /* RSSI / TOA */ + uint8_t rssi_num; /* number of RSSI values */ + float rssi_sum; /* sum of RSSI values */ + uint8_t toa_num; /* number of TOA values */ + float toa_sum; /* sum of TOA values */ + + /* loss detection */ + uint8_t lost; /* (SACCH) loss detection */ + + /* mode */ + uint8_t rsl_cmode, tch_mode; /* mode for TCH channels */ + + /* AMR */ + uint8_t codec[4]; /* 4 possible codecs for amr */ + int codecs; /* number of possible codecs */ + float ber_sum; /* sum of bit error rates */ + int ber_num; /* number of bit error rates */ + uint8_t ul_ft; /* current uplink FT index */ + uint8_t dl_ft; /* current downlink FT index */ + uint8_t ul_cmr; /* current uplink CMR index */ + uint8_t dl_cmr; /* current downlink CMR index */ + uint8_t amr_loop; /* if AMR loop is enabled */ + + /* TCH/H */ + uint8_t dl_ongoing_facch; /* FACCH/H on downlink */ + uint8_t ul_ongoing_facch; /* FACCH/H on uplink */ + + /* encryption */ + int ul_encr_algo; /* A5/x encry algo downlink */ + int dl_encr_algo; /* A5/x encry algo uplink */ + int ul_encr_key_len; + int dl_encr_key_len; + uint8_t ul_encr_key[8]; + uint8_t dl_encr_key[8]; + + /* measurements */ + struct { + uint8_t clock; /* cyclic clock counter */ + int8_t rssi[32]; /* last RSSI values */ + int rssi_count; /* received RSSI values */ + int rssi_valid_count; /* number of stored value */ + int rssi_got_burst; /* any burst received so far */ + float toa_sum; /* sum of TOA values */ + int toa_num; /* number of TOA value */ + } meas; + + /* handover */ + uint8_t ho_rach_detect; /* if rach detection is on */ +}; + +struct trx_config { + uint8_t poweron; /* poweron(1) or poweroff(0) */ + int poweron_sent; + + int arfcn_valid; + uint16_t arfcn; + int arfcn_sent; + + int tsc_valid; + uint8_t tsc; + int tsc_sent; + + int bsic_valid; + uint8_t bsic; + int bsic_sent; + + int rxgain_valid; + int rxgain; + int rxgain_sent; + + int power_valid; + int power; + int power_oml; + int power_sent; + + int maxdly_valid; + int maxdly; + int maxdly_sent; + + uint8_t slotmask; + + int slottype_valid[8]; + uint8_t slottype[8]; + int slottype_sent[8]; +}; + +struct trx_l1h { + struct llist_head trx_ctrl_list; + + struct gsm_bts_trx *trx; + + struct osmo_fd trx_ofd_ctrl; + struct osmo_timer_list trx_ctrl_timer; + struct osmo_fd trx_ofd_data; + + /* transceiver config */ + struct trx_config config; + + uint8_t mf_index[8]; /* selected multiframe index */ + uint32_t mf_last_fn[8]; /* last received frame */ + uint8_t mf_period[8]; /* period of multiframe */ + struct trx_sched_frame *mf_frames[8]; /* pointer to frame layout */ + + /* Channel states for all channels on all timeslots */ + struct trx_chan_state chan_states[8][_TRX_CHAN_MAX]; + struct llist_head dl_prims[8]; /* Queue primitves for TX */ + uint8_t ho_rach_detect[8][8]; +}; + +struct trx_l1h *l1if_open(struct gsm_bts_trx *trx); +void l1if_close(struct trx_l1h *l1h); +void l1if_reset(struct trx_l1h *l1h); +int check_transceiver_availability(struct gsm_bts *bts, int avail); +int l1if_provision_transceiver_trx(struct trx_l1h *l1h); +int l1if_provision_transceiver(struct gsm_bts *bts); +int l1if_mph_time_ind(struct gsm_bts *bts, uint32_t fn); +void l1if_fill_meas_res(struct osmo_phsap_prim *l1sap, uint8_t chan_nr, float ta, + float ber, float rssi); +int l1if_process_meas_res(struct gsm_bts_trx *trx, uint8_t tn, uint32_t fn, uint8_t chan_nr, + int n_errors, int n_bits_total, float rssi, float toa); + +#endif /* L1_IF_H_TRX */ |