Subversion Repositories openhmc

/*

 *                              .--------------. .----------------. .------------.

 *                             | .------------. | .--------------. | .----------. |

 *                             | | ____  ____ | | | ____    ____ | | |   ______ | |

 *                             | ||_   ||   _|| | ||_   \  /   _|| | | .' ___  || |

 *       ___  _ __   ___ _ __  | |  | |__| |  | | |  |   \/   |  | | |/ .'   \_|| |

 *      / _ \| '_ \ / _ \ '_ \ | |  |  __  |  | | |  | |\  /| |  | | || |       | |

 *       (_) | |_) |  __/ | | || | _| |  | |_ | | | _| |_\/_| |_ | | |\ `.___.'\| |

 *      \___/| .__/ \___|_| |_|| ||____||____|| | ||_____||_____|| | | `._____.'| |

 *           | |               | |            | | |              | | |          | |

 *           |_|               | '------------' | '--------------' | '----------' |

 *                              '--------------' '----------------' '------------'

 *

 *  openHMC - An Open Source Hybrid Memory Cube Controller

 *  (C) Copyright 2014 Computer Architecture Group - University of Heidelberg

 *  www.ziti.uni-heidelberg.de

 *  B6, 26

 *  68159 Mannheim

 *  Germany

 *

 *  Contact: openhmc@ziti.uni-heidelberg.de

 *  http://ra.ziti.uni-heidelberg.de/openhmc

 *

 *   This source file is free software: you can redistribute it and/or modify

 *   it under the terms of the GNU Lesser General Public License as published by

 *   the Free Software Foundation, either version 3 of the License, or

 *   (at your option) any later version.

 *

 *   This source file 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 Lesser General Public License for more details.

 *

 *   You should have received a copy of the GNU Lesser General Public License

 *   along with this source file.  If not, see .

 *

 *

 */

//

//

// hmc link tag checker

//

//

`ifndef hmc_tag_mon_SV

`define hmc_tag_mon_SV

class hmc_tag_mon  extends uvm_component;

        int tags_in_use[int];

        int current_tag;

        int transaction_count;

        int max_tags_in_use;

        int max_tags_available = 512;

        covergroup tags_cg;

                option.per_instance = 1;

                TAGS_IN_USE : coverpoint tags_in_use.size(){

                        bins low_usage[]        = {[1:20]};

                        bins medium_usage[]     = {[21:250]};

                        bins high_usage[]       = {[251:511]};

                        bins no_tags_available = {512};

                }

                USED_TAGS       : coverpoint current_tag{

                        bins TAGS[] = {[1:511]};

                }

        endgroup

        `uvm_component_utils_begin(hmc_tag_mon)

                `uvm_field_int(max_tags_available, UVM_DEFAULT)

        `uvm_component_utils_end

        function new ( string name="hmc_tag_mon", uvm_component parent );

                super.new(name, parent);

                tags_in_use.delete();

                max_tags_in_use = 0;

                transaction_count = 0;

                tags_cg = new();

        endfunction : new

        function void reset();

                tags_in_use.delete();

        endfunction : reset

        function void use_tag(input bit [8:0] tag);

                int tmp[];

                if (tag > max_tags_available-1)

                        `uvm_fatal(get_type_name(), $psprintf("use_tag: tag (%0d) out of range!", tag))

                 if(!tags_in_use.exists(tag) ) begin

                        tags_in_use[tag] = tag;

                        current_tag = tag;

                        tags_cg.sample();

                end

        endfunction : use_tag

        function void release_tag(input bit [8:0] tag);

                if (tags_in_use.exists(tag))

                        tags_in_use.delete(tag);

                else

                        `uvm_fatal(get_type_name(), $psprintf("release_tag: tag (%0d) not in use!", tag))

                transaction_count++;

        endfunction : release_tag

        function bit idle_check();

                idle_check = 1;

                if (tags_in_use.size() > 0) begin

                        foreach (tags_in_use[i])

                                `uvm_info(get_type_name(), $psprintf("%0d tags still in use, Tag %0d is in use!", tags_in_use.size(), i),UVM_LOW)

                        idle_check = 0;

                end

        endfunction : idle_check

        function void check_phase(uvm_phase phase);

                if (!idle_check())

                        `uvm_fatal(get_type_name(),$psprintf("Tags are still in use"))

        endfunction : check_phase

        function void report_phase(uvm_phase phase);

                `uvm_info(get_type_name(),$psprintf("max_tags_in_use %0d, transaction_count %0d", max_tags_in_use, transaction_count), UVM_LOW)

        endfunction : report_phase

endclass : hmc_tag_mon

`endif // hmc_tag_mon_SV