| /* 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. |
| */ |
| |
| #pragma once |
| |
| #include <inttypes.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #include <osmocom/core/linuxlist.h> |
| #include "gsm_rlcmac.h" |
| #include "coding_scheme.h" |
| #include "pdch_ul_controller.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 */ |
| |
| #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<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); |
| |
| 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); |
| bool pdch_is_full(const struct gprs_rlcmac_pdch *pdch); |
| const char *pdch_name(const struct gprs_rlcmac_pdch *pdch); |
| char *pdch_name_buf(const struct gprs_rlcmac_pdch *pdch, char *buf, size_t buf_size); |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #define LOGPDCH(pdch, category, level, fmt, args...) \ |
| LOGP(category, level, "%s " fmt, pdch_name(pdch), ## args) |