/* 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 * * 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 #ifdef __cplusplus extern "C" { #include #include "gsm_rlcmac.h" #include "coding_scheme.h" #include "pdch_ul_controller.h" } #endif #include #include /* 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 */ #define USF_UNUSED 0x07 /* 3GPP TS 05.08 version 8.23.0 "10.2.2 BTS output power". 360 ms */ #define MS_RESYNC_NUM_FRAMES 18 /* * 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 struct osmo_mobile_identity *mi); 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, enum CodingScheme cs); int rcv_data_block(uint8_t *data, uint8_t data_len, uint32_t fn, struct pcu_l1_meas *meas, enum CodingScheme cs); struct gprs_rlcmac_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 num_tbfs_update(gprs_rlcmac_tbf *tbf, bool is_attach); 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; bool has_gprs_only_tbf_attached() 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 */ /* store number of contiguous frame number where a DL block was transmitted which can be decoded by GPRS-only MS */ uint32_t fn_without_cs14; /* PTCCH (Packet Timing Advance Control Channel) */ uint8_t ptcch_msg[GSM_MACBLOCK_LEN]; /* 'ready to use' PTCCH/D message */ #ifdef __cplusplus /* 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 /* Frequency hopping parameters */ struct { bool enabled; /* 3GPP TS 45.002 HSN / MAIO (6 bit each) */ uint8_t hsn; uint8_t maio; /* 3GPP TS 44.018, 10.5.2.21 "Mobile Allocation" */ uint8_t ma_oct_len; uint8_t ma_bit_len; uint8_t ma[8]; } fh; /* back pointers */ struct gprs_rlcmac_trx *trx; uint8_t ts_no; struct pdch_ulc *ulc; #ifdef __cplusplus private: int rcv_control_block(const uint8_t *data, uint8_t data_len, uint32_t fn, struct pcu_l1_meas *meas, enum CodingScheme 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); void rcv_cell_change_notification(Packet_Cell_Change_Notification_t *, uint32_t fn, struct pcu_l1_meas *meas); gprs_rlcmac_tbf *tbf_from_list_by_tfi( LListHead *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); void free_resources(); #endif uint8_t m_num_tbfs_gprs[2]; uint8_t m_num_tbfs_egprs[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_gprs[dir] + m_num_tbfs_egprs[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 */ #ifdef __cplusplus extern "C" { #endif void pdch_init(struct gprs_rlcmac_pdch *pdch, struct gprs_rlcmac_trx *trx, uint8_t ts_nr); void pdch_free_all_tbf(struct gprs_rlcmac_pdch *pdch); void pdch_disable(struct gprs_rlcmac_pdch *pdch); bool pdch_is_enabled(const struct gprs_rlcmac_pdch *pdch); #ifdef __cplusplus } #endif #define LOGPDCH(pdch, category, level, fmt, args...) \ LOGP(category, level, "PDCH(bts=%" PRIu8 ",trx=%" PRIu8 ",ts=%" PRIu8 ") " fmt, \ (pdch)->trx->bts->nr, (pdch)->trx->trx_no, (pdch)->ts_no, \ ## args)