init

code/Vezba 13 - prateci materijal/apb_uvc/sv/apb_config.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_config.sv
+
+    DESCRIPTION     contains main and default configurations
+
+ ****************************************************************************/
+
+`ifndef APB_CONFIG_SV
+`define APB_CONFIG_SV
+
+/**
+ * Class: apb_config
+ */
+class apb_config extends uvm_object;
+
+    // number of master and slave agents
+    int unsigned num_of_slaves; // total number of slaves (DUT or agents)
+    int unsigned num_of_slave_agents; // number of UVM slave agents
+    bit has_master;
+
+    // configurations for every agent
+    apb_slave_config slave_cfg_queue[$];
+    apb_master_config master_cfg;
+
+    // control
+    bit has_pslverr = 1; // APB peripherals are not required to support the PSLVERR pin
+    bit has_checks = 1;
+    bit has_coverage = 1;
+
+    // UVM factory registration
+    `uvm_object_utils_begin(apb_config)
+        `uvm_field_int(num_of_slaves, UVM_DEFAULT)
+        `uvm_field_int(num_of_slave_agents, UVM_DEFAULT)
+        `uvm_field_int(has_master, UVM_DEFAULT)
+        `uvm_field_queue_object(slave_cfg_queue, UVM_DEFAULT)
+        `uvm_field_object(master_cfg, UVM_DEFAULT)
+        `uvm_field_int(has_pslverr, UVM_DEFAULT)
+        `uvm_field_int(has_checks, UVM_DEFAULT)
+        `uvm_field_int(has_coverage, UVM_DEFAULT)
+    `uvm_object_utils_end
+
+    // new - constructor
+    function new(string name = "apb_config");
+        super.new(name);
+    endfunction : new
+    
+    // additional class methods
+    extern function void add_slave( bit [ADDR_WIDTH - 1 : 0] start_addr,
+                                    bit [ADDR_WIDTH - 1 : 0] end_addr,
+                                    int unsigned psel_indx,
+                                    bit create_agent = 1,
+                                    uvm_active_passive_enum is_active = UVM_ACTIVE);
+    extern function void add_master(uvm_active_passive_enum is_active = UVM_ACTIVE);
+    extern function int unsigned get_slave_psel_by_addr(bit [ADDR_WIDTH - 1 : 0] addr);
+
+endclass : apb_config
+
+// creates and configures a slave agent config and adds to a queue
+function void apb_config::add_slave(bit [ADDR_WIDTH - 1 : 0] start_addr,
+                                    bit [ADDR_WIDTH - 1 : 0] end_addr,
+                                    int unsigned psel_indx,
+                                    bit create_agent = 1,
+                                    uvm_active_passive_enum is_active = UVM_ACTIVE);
+    apb_slave_config tmp_cfg;
+    ++num_of_slaves;
+    if(create_agent == 1) ++num_of_slave_agents;
+    tmp_cfg = apb_slave_config::type_id::create("slave_cfg");
+    tmp_cfg.start_address = start_addr;
+    tmp_cfg.end_address = end_addr;
+    tmp_cfg.psel_index = psel_indx;
+    tmp_cfg.create_agent = create_agent;
+    tmp_cfg.is_active = is_active;
+    tmp_cfg.has_checks = has_checks;
+    tmp_cfg.has_coverage = has_coverage;
+    slave_cfg_queue.push_back(tmp_cfg);
+endfunction : add_slave
+
+// creates and configures a master agent configuration
+function void apb_config::add_master(uvm_active_passive_enum is_active = UVM_ACTIVE);
+    has_master = 1;
+    master_cfg = apb_master_config::type_id::create("master_cfg");
+    master_cfg.is_active = is_active;
+    master_cfg.has_checks = has_checks;
+    master_cfg.has_coverage = has_coverage;
+endfunction : add_master
+
+// returns the slave psel index
+function int unsigned apb_config::get_slave_psel_by_addr(bit [ADDR_WIDTH - 1 : 0] addr);
+    for (int i = 0; i < slave_cfg_queue.size(); i++)
+        if(slave_cfg_queue[i].check_address_range(addr)) begin
+            return slave_cfg_queue[i].psel_index;
+        end
+    return 0;
+endfunction : get_slave_psel_by_addr
+
+/**
+ * Class: default_apb_config
+ * 
+ * Description: default configuration - one master, no slaves
+ */
+class default_apb_config extends apb_config;
+
+    `uvm_object_utils(default_apb_config)
+
+    function new(string name = "default_apb_config");
+        super.new(name);
+        add_master(UVM_ACTIVE);
+        add_slave(0, 2**ADDR_WIDTH - 1, 1, 1, UVM_ACTIVE); // TODO : remove after debug
+    endfunction : new
+
+endclass : default_apb_config
+
+`endif

code/Vezba 13 - prateci materijal/apb_uvc/sv/apb_env.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_env.sv
+
+    DESCRIPTION     environment containing the master and slave agents
+
+ ****************************************************************************/
+
+`ifndef APB_ENV_SV
+`define APB_ENV_SV
+
+/**
+ * Class: apb_env
+ */
+class apb_env extends uvm_env;
+    
+    apb_slave_agent  slaves[]; // can have more than one slave
+    apb_master_agent master;   // one master
+
+    apb_config cfg; // uvc configuration
+
+    // UVM factory registration
+    `uvm_component_utils_begin(apb_env)
+        `uvm_field_object(cfg, UVM_DEFAULT)
+    `uvm_component_utils_end    
+
+    // new - constructor
+	function new(string name = "apb_env", uvm_component parent = null);
+		super.new(name, parent);
+	endfunction : new
+    
+    // UVM build_phase
+    function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+        
+        // get configuration from db or use default configuration if none is set
+        if(!uvm_config_db#(apb_config)::get(this, "", "apb_config", cfg)) begin
+            `uvm_info("NOCONFIG", "Using default_apb_config", UVM_LOW)
+            apb_config::type_id::set_type_override(default_apb_config::get_type(), 1);
+            cfg = apb_config::type_id::create("cfg");
+        end
+                
+        // set the master configuration
+        if(cfg.has_master) begin
+            uvm_config_db#(apb_config)::set(this, "master*", "apb_config", cfg);
+        end
+        // set the slave configurations
+        foreach(cfg.slave_cfg_queue[i]) begin
+            string sname;
+            sname = $sformatf("slave[%0d]*", i);
+            uvm_config_db#(apb_slave_config)::set(this, sname, "apb_slave_config", cfg.slave_cfg_queue[i]);
+        end
+
+        // create agents
+        if(cfg.has_master) begin
+            master = apb_master_agent::type_id::create("master",this);
+        end
+        if(cfg.num_of_slave_agents != 0) begin
+            slaves = new[cfg.num_of_slave_agents];
+            for(int i = 0; i < cfg.slave_cfg_queue.size(); i++) begin
+                if(cfg.slave_cfg_queue[i].create_agent == 1) begin
+                    slaves[i] = apb_slave_agent::type_id::create($sformatf("slave[%0d]", i), this);
+                end
+            end
+        end
+
+    endfunction : build_phase  
+
+endclass : apb_env
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/apb_if.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_if.sv
+
+    DESCRIPTION     apb interface
+
+ ****************************************************************************/
+
+`ifndef APB_IF_SV
+`define APB_IF_SV
+
+/**
+ * Interface: apb_if
+ */
+interface apb_if (input logic pclk, input logic presetn);
+
+    parameter ADDR_WIDTH  = 32;    // up to 32 bits
+    parameter RDATA_WIDTH = 32;    // up to 32 bits
+    parameter WDATA_WIDTH = 32;    // up to 32 bits
+    parameter SLV_NUM = 15;
+
+    // source is master
+    logic [ADDR_WIDTH - 1 : 0]  paddr;   // the APB address bus
+    logic [SLV_NUM - 1 : 0]     psel;    // select; the slave device is selected
+                                         // and that a data transfer is required
+    logic                       penable; // enable; the second and subsequent
+                                         // cycles of an APB transfer
+    logic                       pwrite;  // direction
+    logic [WDATA_WIDTH - 1 : 0] pwdata;  // write data
+    
+    // source is slave
+    logic                       pready;  // ready; the slave uses this signal to
+                                         // extend an APB transfer
+    logic [RDATA_WIDTH - 1 : 0] prdata;  // read data
+    logic                       pslverr; // indicates a transfer failure
+    
+    // control
+    bit has_checks = 1;
+    bit has_coverage = 1;
+    
+    // TODO : coverage and assertions go here...
+
+endinterface : apb_if
+
+`endif

code/Vezba 13 - prateci materijal/apb_uvc/sv/apb_pkg.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_pkg.sv
+
+    DESCRIPTION     package containing all parameters and includes
+
+ ****************************************************************************/
+
+`ifndef APB_PKG_SV
+`define APB_PKG_SV
+
+/**
+ * Package: apb_pkg
+ */
+package apb_pkg;
+    
+    parameter ADDR_WIDTH  = 32;    // up to 32 bits
+    parameter RDATA_WIDTH = 32;    // up to 32 bits
+    parameter WDATA_WIDTH = 32;    // up to 32 bits
+    parameter SLV_NUM = 15;        // up to 15 slaves
+    
+    // ==================== OBJECTS ==============================
+    typedef class apb_transaction;
+    typedef class apb_master_config;
+    typedef class apb_slave_config;
+    typedef class apb_config;
+    // ==========================================================
+
+    // ==================== SLAVE ===============================
+    typedef class apb_slave_driver;
+    typedef class apb_slave_sequencer;
+    typedef class apb_slave_monitor;
+    typedef class apb_slave_agent;
+    // ==========================================================
+
+    // ==================== MASTER ==============================
+    typedef class apb_master_driver;
+    typedef class apb_master_sequencer;
+    typedef class apb_master_monitor;
+    typedef class apb_master_agent;
+    // ==========================================================
+
+    // ==================== TOP ==================================
+    typedef class apb_env;
+    // ==========================================================
+
+    import uvm_pkg::*;
+    `include "uvm_macros.svh"
+
+    `include "apb_types.sv"
+    `include "apb_config.sv"
+
+    // ==================== MASTER ==============================
+    `include "master/sequences/apb_master_seq_lib.sv"
+    `include "master/apb_master_config.sv"
+    `include "master/apb_master_driver.sv"
+    `include "master/apb_master_monitor.sv"
+    `include "master/apb_master_sequencer.sv"
+    `include "master/apb_master_agent.sv"
+    // ==========================================================
+
+    // ==================== SLAVE ===============================
+    `include "slave/sequences/apb_slave_seq_lib.sv"
+    `include "slave/apb_slave_config.sv"
+    `include "slave/apb_slave_driver.sv"
+    `include "slave/apb_slave_monitor.sv"
+    `include "slave/apb_slave_sequencer.sv"
+    `include "slave/apb_slave_agent.sv"
+    // ==========================================================
+
+    // ==================== TOP =================================
+    `include "apb_env.sv"
+    `include "apb_transaction.sv"
+    // ==========================================================
+
+endpackage : apb_pkg
+
+`include "apb_if.sv"
+
+`endif

code/Vezba 13 - prateci materijal/apb_uvc/sv/apb_transaction.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_transaction.sv
+
+    DESCRIPTION     sequence item
+
+ ****************************************************************************/
+
+`ifndef APB_TRANSACTION_SV
+`define APB_TRANSACTION_SV
+
+/**
+ * Class: apb_transaction
+ */
+class apb_transaction extends uvm_sequence_item;
+    
+    // fields
+    rand bit [ADDR_WIDTH - 1 : 0]  addr;
+    rand apb_direction_enum        dir;
+    rand bit [RDATA_WIDTH - 1 : 0] rdata;
+    rand bit [WDATA_WIDTH - 1 : 0] wdata;
+    rand int unsigned              delay = 0;
+    bit                            error;
+    
+    // constraints
+    constraint c_delay { delay <= 10 ; }
+    
+    // UVM factory registration
+    `uvm_object_utils_begin(apb_transaction)
+        `uvm_field_int(addr, UVM_DEFAULT)
+        `uvm_field_enum(apb_direction_enum, dir, UVM_DEFAULT)
+        `uvm_field_int(rdata, UVM_DEFAULT)
+        `uvm_field_int(wdata, UVM_DEFAULT)
+        `uvm_field_int(delay, UVM_DEFAULT)
+        `uvm_field_int(error, UVM_DEFAULT)
+    `uvm_object_utils_end
+    
+    // new - constructor
+    function new(string name = "apb_transaction");
+        super.new(name);
+    endfunction : new
+    
+endclass : apb_transaction
+
+`endif

code/Vezba 13 - prateci materijal/apb_uvc/sv/apb_types.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_types.sv
+
+    DESCRIPTION     contains all typedef-s used in project
+
+ ****************************************************************************/
+
+`ifndef APB_TYPES_SV
+`define APB_TYPES_SV
+
+// APB direction - read or write
+typedef enum {
+    APB_READ = 0,
+    APB_WRITE = 1
+} apb_direction_enum;
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/apb_master_agent.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_agent.sv
+
+    DESCRIPTION     master agent
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_AGENT_SV
+`define APB_MASTER_AGENT_SV
+    
+/**
+ * Class: apb_master_agent
+ */
+class apb_master_agent extends uvm_agent;
+    
+    // configuration object
+    apb_config       cfg;
+
+    // components
+    apb_master_driver       drv;
+    apb_master_sequencer    seqr;
+    apb_master_monitor      mon;
+
+    // UVM factory registration
+    `uvm_component_utils_begin(apb_master_agent)
+        `uvm_field_object(cfg, UVM_DEFAULT | UVM_REFERENCE)
+    `uvm_component_utils_end    
+
+    // new - constructor
+	function new(string name = "apb_master_agent", uvm_component parent = null);
+		super.new(name, parent);
+	endfunction : new
+    
+    // UVM build_phase
+    function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+
+        // get configuration object from db
+        if(!uvm_config_db#(apb_config)::get(this, "", "apb_config", cfg))
+            `uvm_fatal("NOCONFIG",{"Config object must be set for: ",get_full_name(),".cfg"})
+
+        // create driver and sequencer if agent is active
+        if(cfg.master_cfg.is_active == UVM_ACTIVE) begin
+            seqr = apb_master_sequencer::type_id::create("seqr", this);
+            drv = apb_master_driver::type_id::create("drv", this);
+        end
+        // always create monitor
+        mon = apb_master_monitor::type_id::create("mon", this);
+    endfunction : build_phase
+
+    // UVM connect_phase
+    function void connect_phase(uvm_phase phase);
+        super.connect_phase(phase);
+        // connect driver and sequencer if agent is active
+        if(cfg.master_cfg.is_active == UVM_ACTIVE) begin
+            drv.seq_item_port.connect(seqr.seq_item_export);
+        end
+    endfunction : connect_phase
+    
+endclass : apb_master_agent
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/apb_master_config.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_config.sv
+
+    DESCRIPTION     master configuration object
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_CONFIG_SV
+`define APB_MASTER_CONFIG_SV
+
+/**
+ * Class: apb_master_config
+ */
+class apb_master_config extends uvm_object;
+
+    // is agent active or passive
+    uvm_active_passive_enum is_active = UVM_ACTIVE;
+    // checks and coverage control
+    bit has_checks                    = 1;
+    bit has_coverage                  = 1;
+
+    // UVM factory registration
+    `uvm_object_utils_begin(apb_master_config)
+        `uvm_field_enum(uvm_active_passive_enum, is_active, UVM_DEFAULT)
+        `uvm_field_int(has_checks, UVM_DEFAULT)
+        `uvm_field_int(has_coverage, UVM_DEFAULT)    
+    `uvm_object_utils_end
+
+    // new - constructor
+	function new(string name = "apb_master_config");
+		super.new(name);
+	endfunction : new
+
+endclass : apb_master_config
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/apb_master_driver.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_driver.sv
+
+    DESCRIPTION     
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_DRIVER_SV
+`define APB_MASTER_DRIVER_SV
+
+/**
+ * Class: apb_master_driver
+ */
+class apb_master_driver extends uvm_driver #(apb_transaction, apb_transaction);
+    
+    // apb virtual interface
+    virtual apb_if vif;
+    
+    // configuration
+    apb_config cfg;
+    
+    // UVM factory registration
+    `uvm_component_utils_begin(apb_master_driver)
+        `uvm_field_object(cfg, UVM_DEFAULT | UVM_REFERENCE)
+    `uvm_component_utils_end       
+
+    // new - constructor
+	function new(string name = "apb_master_driver", uvm_component parent = null);
+		super.new(name, parent);
+	endfunction : new
+    
+    // UVM build_phase
+    virtual function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+        // get configuration object from db
+        if(!uvm_config_db#(apb_config)::get(this, "*", "apb_config", cfg))
+            `uvm_fatal("NOCONFIG",{"Config object must be set for: ",get_full_name(),".cfg"})
+    endfunction: build_phase
+    
+    // UVM connect_phase
+    virtual function void connect_phase(uvm_phase phase);
+        super.connect_phase(phase);
+        // get interface from db
+        if(!uvm_config_db#(virtual apb_if)::get(this, "", "apb_if", vif))
+            `uvm_fatal("NOVIF",{"virtual interface must be set for: ",get_full_name(),".vif"})    
+    endfunction : connect_phase
+    
+    // additional class methods
+    extern virtual task run_phase(uvm_phase phase);
+    extern virtual task get_and_drive();
+    extern virtual task reset();
+    extern virtual task drive_tr (apb_transaction tr);
+    
+endclass : apb_master_driver
+
+// UVM run_phase
+task apb_master_driver::run_phase(uvm_phase phase);
+    reset(); // init.
+    forever begin
+        fork
+            get_and_drive(); // thread killed at reset
+            @(negedge vif.presetn); // reset is active low
+        join_any
+        disable fork;
+        reset();
+    end
+endtask : run_phase
+
+// reset signals
+task apb_master_driver::reset();
+    `uvm_info(get_type_name(), "Reset observed", UVM_MEDIUM)
+    vif.paddr     <= {ADDR_WIDTH {1'b0}};
+    vif.pwdata    <= {WDATA_WIDTH {1'b0}};
+    vif.pwrite    <= 1'b0;
+    vif.psel      <= {SLV_NUM {1'b0}};
+    vif.penable   <= 1'b0;
+    @(posedge vif.presetn); // reset dropped
+endtask : reset
+
+// sequencer/driver handshake
+task apb_master_driver::get_and_drive();
+    forever begin
+        seq_item_port.get_next_item(req);
+        drive_tr(req);
+        seq_item_port.item_done();
+    end
+endtask : get_and_drive
+
+// drive transaction
+task apb_master_driver::drive_tr (apb_transaction tr);
+    int unsigned slave_index;
+    
+    // delay
+    @(posedge vif.pclk);
+    if (tr.delay > 0) begin
+        repeat(tr.delay) @(posedge vif.pclk);
+    end
+    
+    // address phase
+    slave_index = cfg.get_slave_psel_by_addr(tr.addr);
+    if(slave_index == 0) begin
+        `uvm_warning(get_type_name(), "No slave with choosed address")
+        return;
+    end
+    vif.paddr <= tr.addr;
+    vif.psel <= (1 << (slave_index - 1));
+    vif.penable <= 0;
+    vif.pwrite <= apb_direction_enum'(tr.dir);
+    if (tr.dir == APB_WRITE) begin
+        vif.pwdata <= tr.wdata;
+    end
+    
+    // data phase
+    @(posedge vif.pclk);
+    vif.penable <= 1;
+    @(posedge vif.pclk iff vif.pready);
+    tr.error = vif.pslverr;
+    if (tr.dir == APB_READ) begin
+        tr.rdata = vif.prdata;
+    end
+    vif.penable <= 0;
+    vif.psel    <= 0;
+
+    `uvm_info(get_type_name(), $sformatf("APB Finished Driving tr \n%s", tr.sprint()), UVM_HIGH)
+endtask : drive_tr
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/apb_master_monitor.sv

@@ -0,0 +1,140 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_monitor.sv
+
+    DESCRIPTION     
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_MONITOR_SV
+`define APB_MASTER_MONITOR_SV
+
+/**
+ * Class: apb_master_monitor
+ */
+class apb_master_monitor extends uvm_monitor;
+    
+    // apb virtual interface
+    virtual apb_if vif;
+    
+    // configuration
+    apb_config cfg;
+    
+    // TLM - from monitor to other components
+    uvm_analysis_port #(apb_transaction) item_collected_port;
+    
+    // keep track of number of transactions
+    int unsigned num_transactions = 0;
+    
+    // current transaction
+    apb_transaction tr_collected;
+    
+    // UVM factory registration
+    `uvm_component_utils_begin(apb_master_monitor)
+        `uvm_field_object(cfg, UVM_DEFAULT | UVM_REFERENCE)
+    `uvm_component_utils_end
+    
+    // coverage
+    covergroup cg_apb_master;
+        // cover direction - read or write
+        cp_direction : coverpoint tr_collected.dir {
+            bins write = {APB_WRITE};
+            bins read  = {APB_READ};
+        }
+        // cover delay - zero or more
+        cp_delay : coverpoint tr_collected.delay {
+            bins zero = {0};
+            bins other = default;
+        }
+        // TODO : add others
+    endgroup : cg_apb_master;
+
+    // new - constructor
+	function new(string name = "apb_master_monitor", uvm_component parent = null);
+		super.new(name, parent);
+        item_collected_port = new("item_collected_port", this);
+        cg_apb_master = new();
+	endfunction : new
+    
+    // UVM build_phase
+    function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+        // get configuration object from db
+        if(!uvm_config_db#(apb_config)::get(this, "", "apb_config", cfg))
+            `uvm_fatal("NOCONFIG",{"Config object must be set for: ",get_full_name(),".cfg"})
+    endfunction: build_phase
+    
+    // UVM connect_phase
+    function void connect_phase(uvm_phase phase);
+        super.connect_phase(phase);
+        // get interface from db
+        if(!uvm_config_db#(virtual apb_if)::get(this, "", "apb_if", vif))
+            `uvm_fatal("NOVIF",{"virtual interface must be set for: ",get_full_name(),".vif"})    
+    endfunction : connect_phase
+    
+    // additional class methods
+    extern virtual task run_phase(uvm_phase phase);
+    extern virtual task collect_transactions();
+    extern virtual function void report_phase(uvm_phase phase);
+
+endclass : apb_master_monitor
+
+// UVM run_phase
+task apb_master_monitor::run_phase(uvm_phase phase);
+    forever begin
+        @(posedge vif.presetn); // reset dropped
+        `uvm_info(get_type_name(), "Reset dropped", UVM_MEDIUM)
+    
+        fork
+            collect_transactions(); // thread killed at reset
+            @(negedge vif.presetn); // reset is active low
+        join_any
+        disable fork;
+    end
+endtask : run_phase
+
+// monitor apb interface and collect transactions
+task apb_master_monitor::collect_transactions();
+    forever begin
+        tr_collected = apb_transaction::type_id::create("tr_collected");
+        
+        // wait for valid transaction
+        @(posedge vif.pclk iff (vif.psel != 0));
+        tr_collected.addr = vif.paddr;
+        tr_collected.dir = apb_direction_enum'(vif.pwrite);        
+        if(tr_collected.dir == APB_WRITE)
+            tr_collected.wdata = vif.pwdata;
+        
+        @(posedge vif.pclk); // enable
+        @(posedge vif.pclk); // ready
+        while (vif.pready !== 1'b1) begin
+            @(posedge vif.pclk);
+            tr_collected.delay++;
+        end
+        if(tr_collected.dir == APB_READ) begin
+            tr_collected.rdata = vif.prdata;
+            tr_collected.error = vif.pslverr;
+        end
+
+        item_collected_port.write(tr_collected); // TLM
+        // collect coverage if enabled
+        if(cfg.has_coverage == 1) begin
+            cg_apb_master.sample();
+        end
+        `uvm_info(get_type_name(), $sformatf("Tr collected :\n%s", tr_collected.sprint()), UVM_MEDIUM)
+        num_transactions++;
+    end // forever
+endtask : collect_transactions
+
+// UVM report_phase
+function void apb_master_monitor::report_phase(uvm_phase phase);
+    // final report
+    `uvm_info(get_type_name(), $sformatf("Report: APB monitor collected %0d transfers", num_transactions), UVM_LOW);
+endfunction : report_phase
+
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/apb_master_sequencer.sv

@@ -0,0 +1,44 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_sequencer.sv
+
+    DESCRIPTION     
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_SEQUENCER_SV
+`define APB_MASTER_SEQUENCER_SV
+
+/**
+ * Class: apb_master_sequencer
+ */
+class apb_master_sequencer extends uvm_sequencer #(apb_transaction, apb_transaction);
+    
+    // configuration
+    apb_config cfg;    
+    
+    // UVM factory registration
+    `uvm_component_utils_begin(apb_master_sequencer)
+        `uvm_field_object(cfg, UVM_DEFAULT | UVM_REFERENCE)
+    `uvm_component_utils_end
+
+    // new - constructor
+	function new(string name = "apb_master_sequencer", uvm_component parent = null);
+		super.new(name, parent);
+	endfunction : new
+    
+    // UVM build_phase
+    function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+        // get configuration object from db
+        if(!uvm_config_db#(apb_config)::get(this, "", "apb_config", cfg))
+            `uvm_fatal("NOCONFIG",{"Config object must be set for: ",get_full_name(),".cfg"})
+    endfunction: build_phase    
+
+endclass : apb_master_sequencer
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/sequences/apb_master_base_seq.sv

@@ -0,0 +1,33 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_base_seq.sv
+
+    DESCRIPTION     base sequence to be extended by other sequences
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_BASE_SEQ_SV
+`define APB_MASTER_BASE_SEQ_SV
+    
+/**
+ * Class: apb_master_base_seq
+ */
+class apb_master_base_seq extends uvm_sequence #(apb_transaction, apb_transaction);
+    
+    // p_sequencer for APB master sequences
+    `uvm_declare_p_sequencer(apb_master_sequencer)
+    // UVM factory registration
+    `uvm_object_utils(apb_master_base_seq)
+
+    // new - constructor
+	function new(string name = "apb_master_base_seq");
+		super.new(name);
+	endfunction : new
+
+endclass : apb_master_base_seq
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/sequences/apb_master_read_after_write_seq.sv

@@ -0,0 +1,50 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_read_after_write_seq.sv
+
+    DESCRIPTION     sequence for writing and reading from one address
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_READ_AFTER_WRITE_SEQ_SV
+`define APB_MASTER_READ_AFTER_WRITE_SEQ_SV
+    
+/**
+ * Class: apb_master_read_after_write_seq
+ */
+class apb_master_read_after_write_seq extends apb_master_base_seq;
+
+    rand int unsigned delay; // transaction delay
+    rand bit [ADDR_WIDTH - 1 : 0] addr; // address to write/read
+
+    // constraints
+    constraint delay_cst { delay inside {[1 : 10]};}
+
+    // UVM factory registration
+    `uvm_object_utils(apb_master_read_after_write_seq)
+
+    // new - constructor
+    function new(string name = "apb_master_read_after_write_seq");
+        super.new(name);
+    endfunction : new
+
+    // sequence generation logic in body
+    virtual task body();
+        // write
+        `uvm_do_with( req, 
+                   {req.addr == addr;
+                    req.dir == APB_READ;
+                    req.delay == delay;})
+        // read
+        `uvm_do_with( req, 
+                   {req.addr == addr;
+                    req.dir == APB_READ;
+                    req.delay == delay;})     
+    endtask : body
+endclass : apb_master_read_after_write_seq
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/sequences/apb_master_read_all_seq.sv

@@ -0,0 +1,50 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_read_all_seq.sv
+
+    DESCRIPTION     sequence for reading from all valid addresses
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_READ_ALL_SEQ_SV
+`define APB_MASTER_READ_ALL_SEQ_SV
+    
+/**
+ * Class: apb_master_read_all_seq
+ */
+class apb_master_read_all_seq extends apb_master_base_seq;
+
+    // UVM factory registration
+    `uvm_object_utils(apb_master_read_all_seq)
+
+    // new - constructor
+    function new(string name = "apb_master_read_all_seq");
+        super.new(name);
+    endfunction : new
+
+    // sequence generation logic in body
+    virtual task body();
+        bit [ADDR_WIDTH - 1 : 0] end_addr, curr_addr;
+        
+        // read from all addresses in all slaves
+        foreach (p_sequencer.cfg.slave_cfg_queue[i]) begin
+            curr_addr = p_sequencer.cfg.slave_cfg_queue[i].start_address;
+            end_addr  = p_sequencer.cfg.slave_cfg_queue[i].end_address;
+            while (curr_addr != end_addr) begin
+                `uvm_do_with(   req, {
+                                req.addr == curr_addr;
+                                req.dir  == APB_READ;})
+                curr_addr++;
+            end
+            
+        end
+        
+    endtask : body
+    
+endclass : apb_master_read_all_seq
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/sequences/apb_master_read_seq.sv

@@ -0,0 +1,44 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_read_seq.sv
+
+    DESCRIPTION     sequence for reading from one address
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_READ_SEQ_SV
+`define APB_MASTER_READ_SEQ_SV
+    
+/**
+ * Class: apb_master_read_seq
+ */
+class apb_master_read_seq extends apb_master_base_seq;
+    
+    rand int unsigned delay; // transaction delay
+    rand bit [ADDR_WIDTH - 1 : 0] addr; // address to read
+    
+    // constraints
+    constraint delay_cst { delay inside {[1 : 10]};}
+    
+    // UVM factory registration
+    `uvm_object_utils(apb_master_read_seq)
+
+    // new - constructor
+    function new(string name = "apb_master_read_seq");
+        super.new(name);
+    endfunction : new
+
+    // sequence generation logic in body
+    virtual task body();
+        `uvm_do_with( req, 
+                      {req.addr == addr;
+                       req.dir == APB_READ;
+                       req.delay == delay;})     
+    endtask : body
+endclass : apb_master_read_seq
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/sequences/apb_master_seq_lib.sv

@@ -0,0 +1,23 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_seq_lib.sv
+
+    DESCRIPTION     sequence includes
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_SEQ_LIB_SV
+`define APB_MASTER_SEQ_LIB_SV
+
+`include "master/sequences/apb_master_base_seq.sv"
+`include "master/sequences/apb_master_simple_seq.sv"
+`include "master/sequences/apb_master_read_seq.sv"
+`include "master/sequences/apb_master_write_seq.sv"
+`include "master/sequences/apb_master_read_all_seq.sv"
+`include "master/sequences/apb_master_write_all_seq.sv"
+`include "master/sequences/apb_master_read_after_write_seq.sv"
+    
+`endif

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/sequences/apb_master_simple_seq.sv

@@ -0,0 +1,42 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_simple_seq.sv
+
+    DESCRIPTION     simple sequence; random transactions
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_SIMPLE_SEQ_SV
+`define APB_MASTER_SIMPLE_SEQ_SV
+    
+/**
+ * Class: apb_master_simple_seq
+ */
+class apb_master_simple_seq extends apb_master_base_seq;
+    
+    rand int unsigned num_of_tr;
+    
+    // constraints
+    constraint num_of_tr_cst { num_of_tr inside {[1 : 10]};}
+    
+    // UVM factory registration
+    `uvm_object_utils(apb_master_simple_seq)
+
+    // new - constructor
+	function new(string name = "apb_master_simple_seq");
+		super.new(name);
+	endfunction : new
+
+    // sequence generation logic in body
+    virtual task body();
+        repeat(num_of_tr) begin
+            `uvm_do(req)
+        end
+    endtask : body
+    
+endclass : apb_master_simple_seq
+
+`endif

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/sequences/apb_master_write_all_seq.sv

@@ -0,0 +1,64 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_write_all_seq.sv
+
+    DESCRIPTION     sequence for writing to all valid addresses
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_WRITE_ALL_SEQ_SV
+`define APB_MASTER_WRITE_ALL_SEQ_SV
+
+/**
+ * Class: apb_master_write_all_seq
+ */
+class apb_master_write_all_seq extends apb_master_base_seq;
+    
+    bit data_is_rand = 1; // 1 = data will be randomly chosen for every write
+                          // 0 = used data from "data_to_write" field
+    bit [WDATA_WIDTH - 1 : 0] data_to_write;
+    rand bit [WDATA_WIDTH - 1 : 0] data;
+
+    // UVM factory registration
+    `uvm_object_utils(apb_master_write_all_seq)
+
+    // new - constructor
+    function new(string name = "apb_master_write_all_seq");
+        super.new(name);
+    endfunction : new
+
+    // sequence generation logic in body
+    virtual task body();
+        bit [ADDR_WIDTH - 1 : 0] end_addr, curr_addr;
+                    
+        // write to all addresses in all slaves
+        foreach (p_sequencer.cfg.slave_cfg_queue[i]) begin
+            curr_addr = p_sequencer.cfg.slave_cfg_queue[i].start_address;
+            end_addr  = p_sequencer.cfg.slave_cfg_queue[i].end_address;
+            while (curr_addr != end_addr) begin
+                if (data_is_rand) begin
+                    assert(this.randomize());
+                end
+                else begin
+                    data = data_to_write;
+                end
+                
+                `uvm_do_with(   req, {
+                            req.addr  == curr_addr;
+                            req.wdata == data;
+                            req.dir   == APB_WRITE;})
+                curr_addr++;
+            end
+        
+        end
+    
+    
+    endtask : body
+
+endclass : apb_master_write_all_seq
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/master/sequences/apb_master_write_seq.sv

@@ -0,0 +1,47 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_master_write_seq.sv
+
+    DESCRIPTION     sequence for writing to one address
+
+ ****************************************************************************/
+
+`ifndef APB_MASTER_WRITE_SEQ_SV
+`define APB_MASTER_WRITE_SEQ_SV
+
+/**
+ * Class: apb_master_write_seq
+ */
+class apb_master_write_seq extends apb_master_base_seq;
+
+    rand int unsigned delay; // transaction delay
+    rand bit [ADDR_WIDTH - 1 : 0] addr; // address to write
+    rand bit [WDATA_WIDTH - 1 : 0] data; // data to write
+
+    // constraints
+    constraint delay_cst { delay inside {[1 : 10]};}
+
+    // UVM factory registration
+    `uvm_object_utils(apb_master_write_seq)
+
+    // new - constructor
+    function new(string name = "apb_master_write_seq");
+        super.new(name);
+    endfunction : new
+
+    // sequence generation logic in body
+    virtual task body();
+        `uvm_do_with(   req, {
+                        req.addr == addr;
+                        req.dir == APB_WRITE;
+                        req.wdata == data;
+                        req.delay == delay;})     
+    endtask : body
+    
+endclass : apb_master_write_seq
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/slave/apb_slave_agent.sv

@@ -0,0 +1,67 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_slave_agent.sv
+
+    DESCRIPTION     slave agent
+
+ ****************************************************************************/
+
+`ifndef APB_SLAVE_AGENT_SV
+`define APB_SLAVE_AGENT_SV
+    
+/**
+ * Class: apb_slave_agent
+ */
+class apb_slave_agent extends uvm_agent;
+    
+    // configuration object
+    apb_slave_config       cfg;
+
+    // components
+    apb_slave_driver       drv;
+    apb_slave_sequencer    seqr;
+    apb_slave_monitor      mon;
+
+    // UVM factory registration
+    `uvm_component_utils_begin(apb_slave_agent)
+        `uvm_field_object(cfg, UVM_DEFAULT | UVM_REFERENCE)
+    `uvm_component_utils_end    
+
+    // new - constructor
+	function new(string name = "apb_slave_agent", uvm_component parent = null);
+		super.new(name, parent);
+	endfunction : new
+    
+    // UVM build_phase
+    function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+
+        // get configuration object from db
+        if(!uvm_config_db#(apb_slave_config)::get(this, "", "apb_slave_config", cfg))
+            `uvm_fatal("NOCONFIG",{"Config object must be set for: ",get_full_name(),".cfg"})
+
+        // create driver and sequencer if agent is active
+        if(cfg.is_active == UVM_ACTIVE) begin
+            seqr = apb_slave_sequencer::type_id::create("seqr", this);
+            drv = apb_slave_driver::type_id::create("drv", this);
+        end
+        // always create monitor
+        mon = apb_slave_monitor::type_id::create("mon", this);
+    endfunction : build_phase
+
+    // UVM connect_phase
+    function void connect_phase(uvm_phase phase);
+        super.connect_phase(phase);
+        // connect driver and sequencer if agent is active
+        if(cfg.is_active == UVM_ACTIVE) begin
+            drv.seq_item_port.connect(seqr.seq_item_export);
+        end
+    endfunction : connect_phase
+    
+endclass : apb_slave_agent
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/slave/apb_slave_config.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_slave_config.sv
+
+    DESCRIPTION     slave configuration object
+
+ ****************************************************************************/
+
+`ifndef APB_SLAVE_CONFIG_SV
+`define APB_SLAVE_CONFIG_SV
+
+/**
+ * Class: apb_slave_config
+ */
+class apb_slave_config extends uvm_object;
+
+    // is agent active or passive
+    uvm_active_passive_enum is_active = UVM_ACTIVE;
+    // checks and coverage control
+    bit has_checks                    = 1;
+    bit has_coverage                  = 1;
+    // address range
+    rand bit [ADDR_WIDTH - 1 : 0] start_address;
+    rand bit [ADDR_WIDTH - 1 : 0] end_address;
+    // slave index
+    rand int unsigned psel_index;
+    // create agent or just use cfg for address and psel purposes
+    bit create_agent = 1;
+
+    // constraints
+    constraint addr_cst { start_address <= end_address; }
+    constraint psel_cst { psel_index inside {[0 : SLV_NUM]};} // max 15 slaves
+    
+    // UVM factory registration
+    `uvm_object_utils_begin(apb_slave_config)
+        `uvm_field_enum(uvm_active_passive_enum, is_active, UVM_DEFAULT)
+        `uvm_field_int(has_checks, UVM_DEFAULT)
+        `uvm_field_int(has_coverage, UVM_DEFAULT)
+        `uvm_field_int(start_address, UVM_DEFAULT)
+        `uvm_field_int(end_address, UVM_DEFAULT)
+        `uvm_field_int(psel_index, UVM_DEFAULT)
+        `uvm_field_int(create_agent, UVM_DEFAULT)
+    `uvm_object_utils_end
+
+    // new - constructor
+	function new(string name = "apb_slave_config");
+		super.new(name);
+	endfunction : new
+    
+    // checks to see if an address is in the configured range
+    function bit check_address_range(bit [ADDR_WIDTH - 1 : 0] addr);
+        return (!((start_address > addr) || (end_address < addr)));
+    endfunction : check_address_range
+    
+    // checks to see if current psel index is for this slave
+    function bit check_psel_index(logic [SLV_NUM - 1 : 0] psel);
+        for (int i = 0; i < SLV_NUM; i++) begin
+            if((psel[i] == 1) && (psel_index == (i + 1)))
+                return 1;
+        end
+        return 0;
+    endfunction : check_psel_index
+
+endclass : apb_slave_config
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/slave/apb_slave_driver.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_slave_driver.sv
+
+    DESCRIPTION     drives slave response
+
+ ****************************************************************************/
+
+`ifndef APB_SLAVE_DRIVER_SV
+`define APB_SLAVE_DRIVER_SV
+
+/**
+ * Class: apb_slave_driver
+ */
+class apb_slave_driver extends uvm_driver #(apb_transaction, apb_transaction);
+    
+    // apb virtual interface
+    virtual apb_if vif;
+    
+    // configuration
+    apb_slave_config cfg;
+    
+    // UVM factory registration
+    `uvm_component_utils_begin(apb_slave_driver)
+        `uvm_field_object(cfg, UVM_DEFAULT | UVM_REFERENCE)
+    `uvm_component_utils_end       
+
+    // new - constructor
+	function new(string name = "apb_slave_driver", uvm_component parent = null);
+		super.new(name, parent);
+	endfunction : new
+    
+    // UVM build_phase
+    function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+        // get configuration object from db
+        if(!uvm_config_db#(apb_slave_config)::get(this, "", "apb_slave_config", cfg))
+            `uvm_fatal("NOCONFIG",{"Config object must be set for: ",get_full_name(),".cfg"})
+    endfunction: build_phase
+    
+    // UVM connect_phase
+    function void connect_phase(uvm_phase phase);
+        super.connect_phase(phase);
+        // get interface from db
+        if(!uvm_config_db#(virtual apb_if)::get(this, "", "apb_if", vif))
+            `uvm_fatal("NOVIF",{"virtual interface must be set for: ",get_full_name(),".vif"})    
+    endfunction : connect_phase
+    
+    // additional class methods
+    extern virtual task run_phase(uvm_phase phase);
+    extern virtual task get_and_drive();
+    extern virtual task reset();
+    extern virtual task drive_tr (apb_transaction tr);    
+
+endclass : apb_slave_driver
+
+// UVM run_phase
+task apb_slave_driver::run_phase(uvm_phase phase);
+    reset(); // init.
+    forever begin
+        fork
+            get_and_drive(); // thread killed at reset
+            @(negedge vif.presetn); // reset is active low
+        join_any
+        disable fork;
+        
+        reset();
+    end
+endtask : run_phase
+
+// reset signals
+task apb_slave_driver::reset();
+    `uvm_info(get_type_name(), "Reset observed", UVM_MEDIUM)
+    vif.prdata  <= {WDATA_WIDTH {1'bZ}};
+    vif.pready  <= 1'b0;
+    vif.pslverr <= 1'b0;
+     @(posedge vif.presetn); // reset dropped
+endtask : reset
+
+// sequencer/driver handshake
+task apb_slave_driver::get_and_drive();
+    forever begin
+        seq_item_port.get_next_item(req);
+        drive_tr(req);
+        seq_item_port.item_done();
+    end
+endtask : get_and_drive
+
+// drive transaction
+task apb_slave_driver::drive_tr (apb_transaction tr);
+    
+    // wait for the master to initiate the transaction
+    @(posedge vif.pclk iff (vif.penable && cfg.check_psel_index(vif.psel)));
+
+    tr.dir = apb_direction_enum'(vif.pwrite);
+    
+    // delay
+    if (tr.delay > 0) begin
+        repeat(tr.delay) @(posedge vif.pclk);
+    end    
+    // respond
+    vif.pslverr <= tr.error;
+    vif.pready <= 1'b1;
+    if (tr.dir == APB_READ)
+        vif.prdata <= tr.rdata;
+    @(posedge vif.pclk);
+    vif.prdata <= {WDATA_WIDTH {1'bZ}};
+    vif.pready <= 1'b0;
+
+    `uvm_info(get_type_name(), $sformatf("APB Finished Driving tr \n%s", tr.sprint()), UVM_HIGH)
+endtask : drive_tr
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/slave/apb_slave_monitor.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_slave_monitor.sv
+
+    DESCRIPTION     monitors transactions for slave
+
+ ****************************************************************************/
+
+`ifndef APB_SLAVE_MONITOR_SV
+`define APB_SLAVE_MONITOR_SV
+
+/**
+ * Class: apb_slave_monitor
+ */
+class apb_slave_monitor extends uvm_monitor;
+    
+    // apb virtual interface
+    virtual apb_if vif;
+    
+    // configuration
+    apb_slave_config cfg;
+    
+    // TLM - from monitor to other components
+    uvm_analysis_port #(apb_transaction) item_collected_port;
+    
+    // keep track of number of transactions
+    int unsigned num_transactions = 0;
+    
+    // current transaction
+    apb_transaction tr_collected;
+    
+    // UVM factory registration
+    `uvm_component_utils_begin(apb_slave_monitor)
+        `uvm_field_object(cfg, UVM_DEFAULT | UVM_REFERENCE)
+    `uvm_component_utils_end
+    
+    // coverage
+    covergroup cg_apb_slave;
+        // cover direction - read or write
+        cp_direction : coverpoint tr_collected.dir {
+            bins write = {APB_WRITE};
+            bins read  = {APB_READ};
+        }
+        // cover delay - zero or more
+        cp_delay : coverpoint tr_collected.delay {
+            bins zero = {0};
+            bins other = default;
+        }
+        // TODO : add others
+    endgroup : cg_apb_slave;
+
+    // new - constructor
+	function new(string name = "apb_slave_monitor", uvm_component parent = null);
+		super.new(name, parent);
+        item_collected_port = new("item_collected_port", this);
+        cg_apb_slave = new();        
+	endfunction : new
+    
+    // UVM build_phase
+    function void build_phase(uvm_phase phase);
+        super.build_phase(phase);
+        // get configuration object from db
+        if(!uvm_config_db#(apb_slave_config)::get(this, "", "apb_slave_config", cfg))
+            `uvm_fatal("NOCONFIG",{"Config object must be set for: ",get_full_name(),".cfg"})
+    endfunction: build_phase
+    
+    // UVM connect_phase
+    function void connect_phase(uvm_phase phase);
+        super.connect_phase(phase);
+        // get interface from db
+        if(!uvm_config_db#(virtual apb_if)::get(this, "", "apb_if", vif))
+            `uvm_fatal("NOVIF",{"virtual interface must be set for: ",get_full_name(),".vif"})    
+    endfunction : connect_phase
+    
+    // additional class methods
+    extern virtual task run_phase(uvm_phase phase);
+    extern virtual task collect_transactions();
+    extern virtual function void report_phase(uvm_phase phase);
+
+endclass : apb_slave_monitor
+
+// UVM run_phase
+task apb_slave_monitor::run_phase(uvm_phase phase);
+    forever begin
+        @(posedge vif.presetn); // reset dropped
+        `uvm_info(get_type_name(), "Reset dropped", UVM_MEDIUM)
+    
+        fork
+            collect_transactions(); // thread killed at reset
+            @(negedge vif.presetn); // reset is active low
+        join_any
+        disable fork;
+    end
+endtask : run_phase
+
+// monitor apb interface and collect transactions
+task apb_slave_monitor::collect_transactions();
+    forever begin
+        tr_collected = apb_transaction::type_id::create("tr_collected");
+        
+        // collect transactions only for this slave
+        @(posedge vif.pclk iff (cfg.check_psel_index(vif.psel)));
+        tr_collected.addr = vif.paddr;
+        tr_collected.dir = apb_direction_enum'(vif.pwrite);        
+        if(tr_collected.dir == APB_WRITE)
+            tr_collected.wdata = vif.pwdata;
+        
+        @(posedge vif.pclk); // enable
+        @(posedge vif.pclk); // ready
+        // wait for ready
+        while (vif.pready !== 1'b1) begin
+            @(posedge vif.pclk);
+            tr_collected.delay++;
+        end
+        if(tr_collected.dir == APB_READ) begin
+            tr_collected.rdata = vif.prdata;
+            tr_collected.error = vif.pslverr;
+        end
+
+        item_collected_port.write(tr_collected); // TLM
+        // collect coverage if enabled
+        if(cfg.has_coverage == 1) begin
+            cg_apb_slave.sample();
+        end
+        `uvm_info(get_type_name(), $sformatf("Tr collected :\n%s", tr_collected.sprint()), UVM_MEDIUM)
+        num_transactions++;
+    end // forever
+endtask : collect_transactions
+
+// UVM report_phase
+function void apb_slave_monitor::report_phase(uvm_phase phase);
+    // final report
+    `uvm_info(get_type_name(), $sformatf("Report: APB monitor collected %0d transfers", num_transactions), UVM_LOW);
+endfunction : report_phase
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/slave/apb_slave_sequencer.sv

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+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_slave_sequencer.sv
+
+    DESCRIPTION     
+
+ ****************************************************************************/
+
+`ifndef APB_SLAVE_SEQUENCER_SV
+`define APB_SLAVE_SEQUENCER_SV
+
+/**
+ * Class: apb_slave_sequencer
+ */
+class apb_slave_sequencer extends uvm_sequencer #(apb_transaction, apb_transaction);
+    
+    // UVM factory registration
+    `uvm_component_utils (apb_slave_sequencer)
+
+    // new - constructor
+	function new(string name = "apb_slave_sequencer", uvm_component parent = null);
+		super.new(name, parent);
+	endfunction : new
+    
+    // Note: equivalent to
+    // typedef uvm_sequencer#(apb_transaction, apb_transaction) apb_slave_sequencer;
+
+endclass : apb_slave_sequencer
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/slave/sequences/apb_slave_base_seq.sv

@@ -0,0 +1,31 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_slave_base_seq.sv
+
+    DESCRIPTION     base sequence to be extended by other sequences
+
+ ****************************************************************************/
+
+`ifndef APB_SLAVE_BASE_SEQ_SV
+`define APB_SLAVE_BASE_SEQ_SV
+    
+/**
+ * Class: apb_slave_base_seq
+ */
+class apb_slave_base_seq extends uvm_sequence #(apb_transaction, apb_transaction);
+    
+    // UVM factory registration
+    `uvm_object_utils(apb_slave_base_seq)
+
+    // new - constructor
+	function new(string name = "apb_slave_base_seq");
+		super.new(name);
+	endfunction : new
+
+endclass : apb_slave_base_seq
+
+`endif
+

code/Vezba 13 - prateci materijal/apb_uvc/sv/slave/sequences/apb_slave_seq_lib.sv

@@ -0,0 +1,18 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_slave_seq_lib.sv
+
+    DESCRIPTION     sequence includes
+
+ ****************************************************************************/
+
+`ifndef APB_SLAVE_SEQ_LIB_SV
+`define APB_SLAVE_SEQ_LIB_SV
+
+`include "slave/sequences/apb_slave_base_seq.sv"
+`include "slave/sequences/apb_slave_simple_seq.sv"
+    
+`endif

code/Vezba 13 - prateci materijal/apb_uvc/sv/slave/sequences/apb_slave_simple_seq.sv

@@ -0,0 +1,38 @@
+/****************************************************************************
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+    |F|u|n|c|t|i|o|n|a|l| |V|e|r|i|f|i|c|a|t|i|o|n| |o|f| |H|a|r|d|w|a|r|e|
+    +-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+ +-+-+-+-+-+-+-+-+
+
+    FILE            apb_slave_simple_seq.sv
+
+    DESCRIPTION     simple sequence; always respond with random data
+
+ ****************************************************************************/
+
+`ifndef APB_SLAVE_SIMPLE_SEQ_SV
+`define APB_SLAVE_SIMPLE_SEQ_SV
+    
+/**
+ * Class: apb_slave_simple_seq
+ */
+class apb_slave_simple_seq extends apb_slave_base_seq;
+    
+    // UVM factory registration
+    `uvm_object_utils(apb_slave_simple_seq)
+
+    // new - constructor
+	function new(string name = "apb_slave_simple_seq");
+		super.new(name);
+	endfunction : new
+    
+    // sequence generation logic in body
+    virtual task body();
+        forever begin
+            `uvm_do(req)
+        end
+    endtask : body    
+
+endclass : apb_slave_simple_seq
+
+`endif
+