Subversion Repositories mpmc8

// ============================================================================
//        __
//   \\__/ o\    (C) 2022-2023  Robert Finch, Waterloo
//    \  __ /    All rights reserved.
//     \/_//     robfinch<remove>@finitron.ca
//       ||
//
// BSD 3-Clause License
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// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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//    and/or other materials provided with the distribution.
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// ============================================================================
//
package mpmc10_pkg;

parameter CACHE_ASSOC = 4;

parameter RMW = 0;
parameter NAR = 2;
parameter AMSB = 28;
parameter CMD_READ = 3'b001;
parameter CMD_WRITE = 3'b000;

// State machine states
typedef enum logic [4:0] {
        IDLE = 5'd0,
        PRESET1 = 5'd1,
        PRESET2 = 5'd2,
        WRITE_DATA0 = 5'd3,
        WRITE_DATA1 = 5'd4,
        WRITE_DATA2 = 5'd5,
        WRITE_DATA3 = 5'd6,
        READ_DATA = 5'd7,
        READ_DATA0 = 5'd8,
        READ_DATA1 = 5'd9,
        READ_DATA2 = 5'd10,
        WAIT_NACK = 5'd11,
        WRITE_TRAMP = 5'd12,    // write trampoline
        WRITE_TRAMP1 = 5'd13,
        PRESET3 = 5'd14,
        ALU = 5'd15,
        ALU1 = 5'd16,
        ALU2 = 5'd17,
        ALU3 = 5'd18,
        ALU4 = 5'd19,
        CAS = 5'd20
} mpmc10_state_t;

typedef struct packed
{
        logic [31:4] tag;
        logic modified;
        logic [127:0] data;
} mpmc10_cache_line_t;

typedef struct packed
{
        mpmc10_cache_line_t [CACHE_ASSOC-1:0] lines;
} mpmc10_quad_cache_line_t;

endpackage