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//----------------------------------------------------------------------//
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// The MIT License
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//
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// Copyright (c) 2008 Abhinav Agarwal, Alfred Man Cheuk Ng
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// Contact: abhiag@gmail.com
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//----------------------------------------------------------------------//
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//*************************************************************
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// Type definitions for use in the Reed-Solomon modules
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//-------------------------------------------------------------
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import Vector::*;
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typedef Bit#(8) Byte;
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typedef Byte Polynomial;
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typedef Vector#(n,Byte) Syndrome#(numeric type n);
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typedef enum
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{ NO_ERROR,
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CORRECTABLE,
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INCORRECTABLE
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} ErrInfo deriving (Bits, Eq);
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`include "RSParameters.bsv"
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typedef TMul#(T,2) TwoT; // 2 * T
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typedef TAdd#(T,2) TPlusTwo; // T + 2
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typedef TDiv#(T,2) HalfT; // T/2
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// -----------------------------------------------------------
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// The primitive polynomial defines the Galois field in which
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// Reed-Solomon decoder operates, and all the following
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// arithmetic operations are defined under. Changing this
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// value cause the whole Reed-Solomon decoder to operate
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// under the new primitive polynomial.
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// primitive_polynomial[i] = Coefficient of x**i for i = 0:7
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// -----------------------------------------------------------
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Byte n_param = 8'd255;
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Byte t_param = fromInteger(valueOf(T));
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