188 lines
6.0 KiB
C++
188 lines
6.0 KiB
C++
/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSUE_MAC_H
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#define SRSUE_MAC_H
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#include "demux.h"
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#include "dl_harq.h"
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#include "mac_metrics.h"
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#include "mux.h"
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#include "proc_bsr.h"
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#include "proc_phr.h"
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#include "proc_ra.h"
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#include "proc_sr.h"
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#include "srslte/common/logmap.h"
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#include "srslte/common/mac_pcap.h"
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#include "srslte/common/threads.h"
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#include "srslte/common/timers.h"
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#include "srslte/common/tti_sync_cv.h"
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#include "srslte/interfaces/ue_interfaces.h"
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#include "ul_harq.h"
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#include <condition_variable>
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#include <mutex>
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namespace srsue {
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class mac : public mac_interface_phy_lte,
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public mac_interface_rrc,
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public srslte::timer_callback,
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public mac_interface_demux
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{
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public:
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mac(const char* logname);
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~mac();
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bool init(phy_interface_mac_lte* phy,
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rlc_interface_mac* rlc,
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rrc_interface_mac* rrc,
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srslte::timer_handler* timers_,
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stack_interface_mac* stack);
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void stop();
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void get_metrics(mac_metrics_t m[SRSLTE_MAX_CARRIERS]);
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/******** Interface from PHY (PHY -> MAC) ****************/
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/* see mac_interface.h for comments */
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void new_grant_ul(uint32_t cc_idx, mac_grant_ul_t grant, tb_action_ul_t* action);
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void new_grant_dl(uint32_t cc_idx, mac_grant_dl_t grant, tb_action_dl_t* action);
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void new_mch_dl(srslte_pdsch_grant_t phy_grant, tb_action_dl_t* action);
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void tb_decoded(uint32_t cc_idx, mac_grant_dl_t grant, bool ack[SRSLTE_MAX_CODEWORDS]);
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void bch_decoded_ok(uint32_t cc_idx, uint8_t* payload, uint32_t len);
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uint16_t get_dl_sched_rnti(uint32_t tti);
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uint16_t get_ul_sched_rnti(uint32_t tti);
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void mch_decoded(uint32_t len, bool crc);
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void process_mch_pdu(uint32_t len);
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void set_mbsfn_config(uint32_t nof_mbsfn_services);
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void run_tti(const uint32_t tti);
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/** Stack interface */
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void notify_phy_config_completed();
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/******** Interface from RRC (RRC -> MAC) ****************/
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void bcch_start_rx(int si_window_start, int si_window_length);
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void bcch_stop_rx();
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void pcch_start_rx();
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void setup_lcid(uint32_t lcid, uint32_t lcg, uint32_t priority, int PBR_x_tti, uint32_t BSD);
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void setup_lcid(const logical_channel_config_t& config);
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void mch_start_rx(uint32_t lcid);
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void reconfiguration(const uint32_t& cc_idx, const bool& enable);
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void reset();
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void wait_uplink();
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/******** set/get MAC configuration ****************/
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void set_config(mac_cfg_t& mac_cfg);
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void set_contention_id(uint64_t uecri);
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/******* interface from demux object ****************/
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void reset_harq(uint32_t cc_idx);
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bool contention_resolution_id_rcv(uint64_t id);
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void start_noncont_ho(uint32_t preamble_index, uint32_t prach_mask);
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void start_cont_ho();
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void get_rntis(ue_rnti_t* rntis);
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void set_ho_rnti(uint16_t crnti, uint16_t target_pci);
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/*********** interface for stack ******************/
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void process_pdus();
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void notify_ra_completed();
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void start_pcap(srslte::mac_pcap* pcap);
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// Timer callback interface
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void timer_expired(uint32_t timer_id);
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uint32_t get_current_tti();
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private:
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void clear_rntis();
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bool is_in_window(uint32_t tti, int* start, int* len);
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static const int MAC_MAIN_THREAD_PRIO = -1; // Use default high-priority below UHD
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static const int MAC_PDU_THREAD_PRIO = 5;
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// Interaction with PHY
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phy_interface_mac_lte* phy_h = nullptr;
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rlc_interface_mac* rlc_h = nullptr;
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rrc_interface_mac* rrc_h = nullptr;
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stack_interface_mac* stack_h = nullptr;
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srslte::log_ref log_h;
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mac_interface_phy_lte::mac_phy_cfg_mbsfn_t phy_mbsfn_cfg;
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// RNTI search window scheduling
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int si_window_length = -1, si_window_start = -1;
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int ra_window_length = -1, ra_window_start = -1;
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int p_window_start = -1;
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// UE-specific RNTIs
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ue_rnti_t uernti;
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/* Multiplexing/Demultiplexing Units */
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mux mux_unit;
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demux demux_unit;
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/* DL/UL HARQ */
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dl_harq_entity_vector dl_harq;
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ul_harq_entity_vector ul_harq;
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ul_harq_cfg_t ul_harq_cfg;
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/* MAC Uplink-related Procedures */
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ra_proc ra_procedure;
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sr_proc sr_procedure;
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bsr_proc bsr_procedure;
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phr_proc phr_procedure;
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/* Buffers for PCH reception (not included in DL HARQ) */
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const static uint32_t pch_payload_buffer_sz = 8 * 1024;
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srslte_softbuffer_rx_t pch_softbuffer;
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uint8_t pch_payload_buffer[pch_payload_buffer_sz];
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/* Buffers for MCH reception (not included in DL HARQ) */
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const static uint32_t mch_payload_buffer_sz = SRSLTE_MAX_BUFFER_SIZE_BYTES;
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srslte_softbuffer_rx_t mch_softbuffer;
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uint8_t mch_payload_buffer[mch_payload_buffer_sz];
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srslte::mch_pdu mch_msg;
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/* Functions for MAC Timers */
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srslte::timer_handler::unique_timer timer_alignment;
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void setup_timers(int time_alignment_timer);
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void timer_alignment_expire();
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srslte::timer_handler* timers = nullptr;
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// pointer to MAC PCAP object
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srslte::mac_pcap* pcap = nullptr;
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bool is_first_ul_grant = false;
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mac_metrics_t metrics[SRSLTE_MAX_CARRIERS] = {};
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bool initialized = false;
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const uint8_t PCELL_CC_IDX = 0;
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};
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} // namespace srsue
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#endif // SRSUE_MAC_H
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