| Line 32... |
Line 32... |
N, // data bus width in bytes
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N, // data bus width in bytes
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I = 1, // TID width
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I = 1, // TID width
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D = 1, // TDEST width
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D = 1, // TDEST width
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U = 1, // TUSER width
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U = 1, // TUSER width
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U_IS_EOP = -1,
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U_IS_EOP = -1,
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MA, // mux select width
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MN // number of inputs to mux
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MD = 2 ** MA
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)
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)
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(
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(
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axis_if axis_in [MD-1:0],
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axis_if axis_in[MN-1:0],
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axis_if axis_out,
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axis_if axis_out,
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input aclk,
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input aclk,
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input aresetn
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input aresetn
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);
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);
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// --------------------------------------------------------------------
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// synthesis translate_off
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initial begin
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assert(MN > 0) else $fatal;
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end
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// synthesis translate_on
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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localparam MA = $clog2(MN); // mux select width
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localparam MH = 2 ** (MA - 1); // half of ceil(number of inputs)
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localparam MR = MN - MH; // upper remainder
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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generate
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generate
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if(MA == 1)
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if(MN == 1) begin : one
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begin: catenate_gen
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axis_alias axis_alias_i(axis_in[0], axis_out);
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end
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else if(MN == 2) begin : two
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axis_catenate #(.N(N), .I(I), .D(D), .U(U), .U_IS_EOP(U_IS_EOP))
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axis_catenate #(.N(N), .I(I), .D(D), .U(U), .U_IS_EOP(U_IS_EOP))
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axis_catenate_i(.*);
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axis_catenate_i(.*);
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end
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end
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else
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else begin: recurse
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begin: recursive_catenate_gen
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// --------------------------------------------------------------------
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//
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axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_catenate_out[1:0](.*);
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axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_catenate_out[1:0](.*);
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|
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recursive_axis_catenate
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recursive_axis_catenate
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#(
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#( .N(N)
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.N(N),
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, .I(I)
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.I(I),
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, .D(D)
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.D(D),
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, .U(U)
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.U(U),
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, .U_IS_EOP(U_IS_EOP)
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.U_IS_EOP(U_IS_EOP),
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, .MN(MH)
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.MA(MA - 1)
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|
)
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)
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catenate_lo
|
catenate_lo
|
(
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( .axis_in(axis_in[MH-1:0]),
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.axis_in(axis_in[(MD/2)-1:0]),
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.axis_out(axis_catenate_out[0]),
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.axis_out(axis_catenate_out[0]),
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.*
|
.* );
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);
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|
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// --------------------------------------------------------------------
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if(MR == 1) begin : one
|
//
|
axis_alias axis_alias_i(axis_in[MH], axis_catenate_out[1]);
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end
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else if(MR == 2) begin : two
|
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axis_catenate #(.N(N), .I(I), .D(D), .U(U), .U_IS_EOP(U_IS_EOP))
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axis_catenate_i
|
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( .axis_in(axis_in[MH+1:MH]),
|
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.axis_out(axis_catenate_out[1]),
|
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.* );
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end
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else begin : more
|
recursive_axis_catenate
|
recursive_axis_catenate
|
#(
|
#( .N(N)
|
.N(N),
|
, .I(I)
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.I(I),
|
, .D(D)
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.D(D),
|
, .U(U)
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.U(U),
|
, .U_IS_EOP(U_IS_EOP)
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.U_IS_EOP(U_IS_EOP),
|
, .MN(MR)
|
.MA(MA - 1)
|
|
)
|
)
|
catenate_hi
|
catenate_hi
|
(
|
( .axis_in(axis_in[MN-1:MN-MR]),
|
.axis_in(axis_in[MD-1:(MD/2)]),
|
|
.axis_out(axis_catenate_out[1]),
|
.axis_out(axis_catenate_out[1]),
|
.*
|
.* );
|
);
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end
|
|
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// --------------------------------------------------------------------
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axis_catenate #(.N(N), .I(I), .D(D), .U(U), .U_IS_EOP(U_IS_EOP))
|
//
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axis_catenate
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#(
|
|
.N(N),
|
|
.I(I),
|
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.D(D),
|
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.U(U),
|
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.U_IS_EOP(U_IS_EOP)
|
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)
|
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axis_catenate_i(.axis_in(axis_catenate_out), .*);
|
axis_catenate_i(.axis_in(axis_catenate_out), .*);
|
end
|
end
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endgenerate
|
endgenerate
|
|
|
|
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
|
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endmodule
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endmodule
|
|
|
