215 lines
6.8 KiB
C++
215 lines
6.8 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_PHY_H
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#define SRSUE_PHY_H
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#include "phy_common.h"
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#include "phy_metrics.h"
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#include "prach.h"
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#include "sf_worker.h"
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#include "srslte/common/log_filter.h"
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#include "srslte/common/threads.h"
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#include "srslte/common/trace.h"
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#include "srslte/interfaces/phy_interface_types.h"
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#include "srslte/interfaces/radio_interfaces.h"
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#include "srslte/interfaces/ue_interfaces.h"
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#include "srslte/radio/radio.h"
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#include "srslte/srslte.h"
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#include "srsue/hdr/phy/ue_lte_phy_base.h"
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#include "sync.h"
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namespace srsue {
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typedef _Complex float cf_t;
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class phy_cmd_proc : public srslte::thread
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{
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public:
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phy_cmd_proc() : thread("PHY_CMD") { start(); }
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~phy_cmd_proc() { stop(); }
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void add_cmd(std::function<void(void)> cmd) { cmd_queue.push(cmd); }
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void stop()
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{
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if (running) {
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add_cmd([this]() { running = false; });
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wait_thread_finish();
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}
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}
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private:
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void run_thread()
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{
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std::function<void(void)> cmd;
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while (running) {
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cmd = cmd_queue.wait_pop();
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cmd();
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}
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}
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bool running = true;
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// Queue for commands
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srslte::block_queue<std::function<void(void)> > cmd_queue;
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};
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class phy final : public ue_lte_phy_base, public srslte::thread
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{
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public:
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explicit phy(srslte::logger* logger_) : logger(logger_), workers_pool(MAX_WORKERS), common(), thread("PHY"){};
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~phy() final { stop(); }
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// Init defined in base class
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int init(const phy_args_t& args_) final;
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// Init for LTE PHYs
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int init(const phy_args_t& args_, stack_interface_phy_lte* stack_, srslte::radio_interface_phy* radio_) final;
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void stop() final;
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void wait_initialize() final;
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bool is_initiated();
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void get_metrics(phy_metrics_t* m) final;
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void srslte_phy_logger(phy_logger_level_t log_level, char* str);
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void enable_pregen_signals(bool enable) final;
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void radio_overflow() final;
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void radio_failure() final;
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/********** RRC INTERFACE ********************/
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bool cell_search() final;
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bool cell_select(phy_cell_t cell) final;
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// Sets the new PHY configuration for the given CC. The configuration is applied in the background. The notify()
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// function will be called when the reconfiguration is completed. Unless the PRACH configuration has changed, the
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// reconfiguration will not take more than 3 ms
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bool set_config(srslte::phy_cfg_t config, uint32_t cc_idx) final;
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// Adds or modifies the cell configuration for a given CC. If the EARFCN has changed w.r.t. the previous value, or if
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// the cell is new, this function might take a few hundred ms to complete, depending on the radio
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bool set_scell(srslte_cell_t cell_info, uint32_t cc_idx, uint32_t earfcn) final;
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// Applies a TDD configuration in the background. This function will take less than 3 ms to execute.
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void set_config_tdd(srslte_tdd_config_t& tdd_config) final;
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// Todo
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void set_config_mbsfn_sib2(srslte::mbsfn_sf_cfg_t* cfg_list, uint32_t nof_cfgs) final;
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void set_config_mbsfn_sib13(const srslte::sib13_t& sib13) final;
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void set_config_mbsfn_mcch(const srslte::mcch_msg_t& mcch) final;
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// This function applies the new configuration immediately
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void set_cells_to_meas(uint32_t earfcn, const std::set<uint32_t>& pci) final;
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// This function applies the new configuration immediately
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void meas_stop() final;
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// also MAC interface
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bool cell_is_camping() final;
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/********** MAC INTERFACE ********************/
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// Precomputes sequences for the given RNTI. The computation is done in the background.
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void set_crnti(uint16_t rnti) final;
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/* Transmits PRACH in the next opportunity */
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void prach_send(uint32_t preamble_idx, int allowed_subframe, float target_power_dbm, float ta_base_sec) final;
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prach_info_t prach_get_info() final;
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/* Indicates the transmission of a SR signal in the next opportunity */
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void sr_send() final;
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int sr_last_tx_tti() final;
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// Time advance commands
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void set_timeadv_rar(uint32_t ta_cmd) final;
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void set_timeadv(uint32_t ta_cmd) final;
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/* Activate / Disactivate SCell*/
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void set_activation_deactivation_scell(uint32_t ta_cmd) final;
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/* Sets RAR dci payload */
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void set_rar_grant(uint8_t grant_payload[SRSLTE_RAR_GRANT_LEN], uint16_t rnti) final;
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/*Set MAC->PHY MCH period stopping point*/
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void set_mch_period_stop(uint32_t stop) final;
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float get_phr() final;
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float get_pathloss_db() final;
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uint32_t get_current_tti() final;
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void start_plot() final;
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const static int MAX_WORKERS = 4;
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const static int DEFAULT_WORKERS = 4;
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std::string get_type() final { return "lte_soft"; }
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private:
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void run_thread() final;
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void configure_prach_params();
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void reset();
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std::mutex config_mutex;
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std::condition_variable config_cond;
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bool is_configured = false;
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uint32_t nof_workers = 0;
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const static int SF_RECV_THREAD_PRIO = 0;
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const static int WORKERS_THREAD_PRIO = 2;
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srslte::radio_interface_phy* radio = nullptr;
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std::vector<std::unique_ptr<srslte::log_filter> > log_vec;
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srslte::logger* logger = nullptr;
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srslte::log* log_h = nullptr;
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srslte::log* log_phy_lib_h = nullptr;
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srsue::stack_interface_phy_lte* stack = nullptr;
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srslte::thread_pool workers_pool;
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std::vector<std::unique_ptr<sf_worker> > workers;
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phy_common common;
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sync sfsync;
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prach prach_buffer;
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srslte_prach_cfg_t prach_cfg = {};
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srslte_tdd_config_t tdd_config = {};
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srslte::phy_cfg_t config = {};
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phy_args_t args = {};
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// Since cell_search/cell_select operations take a lot of time, we use another queue to process the other commands
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// in parallel and avoid accumulating in the queue
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phy_cmd_proc cmd_worker_cell, cmd_worker;
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// Tracks the current selected cell (last call to cell_select)
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srslte_cell_t selected_cell = {};
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static void set_default_args(phy_args_t& args);
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bool check_args(const phy_args_t& args);
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};
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} // namespace srsue
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#endif // SRSUE_PHY_H
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