Subversion Repositories apb2spi

class apb_driver extends uvm_driver#(apb_seq_item);

        `uvm_component_utils(apb_driver)

        //uvm_analysis_port#(apb_seq_item) apb_ap;

        virtual apb_if v_intf;

        apb_seq_item txns;

function new(string name,uvm_component parent);

        super.new(name,parent);

        //apb_ap = new("apb_ap",this);

endfunction

function void build_phase(uvm_phase phase);

        super.build_phase(phase);

        if(!uvm_config_db #(virtual apb_if)::get(this,"*","apb_vif",v_intf))

                `uvm_fatal("NO_APB_V_INTF","Virtual interface couldn't be obtained for apb driver")

        else

                `uvm_info("APB_V_INTF","Virtual interface has been obtained driver",UVM_NONE)

        txns = apb_seq_item::type_id::create("txns");

endfunction

task run_phase(uvm_phase phase);

        v_intf.PENABLE = 1'b0;

        forever begin

                `uvm_info("DRVR_RUN","Inside the run phase of driver",UVM_NONE)

                seq_item_port.get_next_item(txns);

                `uvm_info("DRVR_RUN",$psprintf("After getting the seq_item from seq, value of seq_item is %p",this.txns),UVM_NONE)

                v_intf.PADDR = txns.paddr;

                //repeat(1)@(posedge v_intf.PCLK);

                `uvm_info("DRVR_RUN","After assigning PADDR from sequence_item",UVM_NONE)

                if(txns.pwrite==1'b1)begin

                        `uvm_info("DRVR_RUN","Invoking the apb_write task",UVM_NONE)

                        apb_write(txns);

                end else begin

                        `uvm_info("DRVR_RUN","Invoking the apb_read task",UVM_NONE)

                        apb_read(txns);

                end

                repeat(1)@(posedge v_intf.PCLK);

                seq_item_port.item_done();

        end

endtask

task apb_write(apb_seq_item txns);

begin

        @(posedge v_intf.PCLK);

        //wait(v_intf.PREADY==1'b0);

        v_intf.PSEL = 1'b1;

        v_intf.PENABLE = 1'b0;

        v_intf.PADDR = txns.paddr;

        v_intf.PWRITE = txns.pwrite;

        @(posedge v_intf.PCLK);

        v_intf.PENABLE = 1'b1;

        wait(v_intf.PREADY==1'b1);

        v_intf.PWDATA = txns.pwdata;

        wait(v_intf.PREADY==1'b0);

        v_intf.PSEL = 1'b0;

        v_intf.PADDR = 'h0;

        v_intf.PWRITE = 'h0;

        v_intf.PENABLE = 1'b0;

end

endtask

task apb_read(apb_seq_item txns);

begin

        @(posedge v_intf.PCLK);

        //wait(v_intf.PREADY==1'b0);

        v_intf.PSEL = 1'b1;

        v_intf.PENABLE = 1'b0;

        v_intf.PADDR = txns.paddr;

        v_intf.PWRITE = 1'b0;

        repeat(1)@(posedge v_intf.PCLK);

        v_intf.PENABLE = 1'b1;

        wait(v_intf.PREADY==1'b1);

        txns.prdata = v_intf.PRDATA;

        wait(v_intf.PREADY==1'b0);

        v_intf.PSEL = 1'b0;

        v_intf.PADDR = 'h0;

        v_intf.PWRITE = 'h0;

        v_intf.PENABLE = 1'b0;

end

endtask

endclass