| // Copyright lowRISC contributors. |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| // SPDX-License-Identifier: Apache-2.0 |
| // |
| // SECDED package generated by |
| // util/design/secded_gen.py from util/design/data/secded_cfg.hjson |
| |
| package prim_secded_pkg; |
| |
| typedef enum int { |
| SecdedNone, |
| Secded_22_16, |
| Secded_28_22, |
| Secded_39_32, |
| Secded_64_57, |
| Secded_72_64, |
| SecdedHamming_22_16, |
| SecdedHamming_39_32, |
| SecdedHamming_72_64 |
| } prim_secded_e; |
| |
| function automatic int get_ecc_data_width(prim_secded_e ecc_type); |
| case (ecc_type) |
| Secded_22_16: return 16; |
| Secded_28_22: return 22; |
| Secded_39_32: return 32; |
| Secded_64_57: return 57; |
| Secded_72_64: return 64; |
| SecdedHamming_22_16: return 16; |
| SecdedHamming_39_32: return 32; |
| SecdedHamming_72_64: return 64; |
| // Return a non-zero width to avoid VCS compile issues |
| default: return 32; |
| endcase |
| endfunction |
| |
| function automatic int get_ecc_parity_width(prim_secded_e ecc_type); |
| case (ecc_type) |
| Secded_22_16: return 6; |
| Secded_28_22: return 6; |
| Secded_39_32: return 7; |
| Secded_64_57: return 7; |
| Secded_72_64: return 8; |
| SecdedHamming_22_16: return 6; |
| SecdedHamming_39_32: return 7; |
| SecdedHamming_72_64: return 8; |
| default: return 0; |
| endcase |
| endfunction |
| |
| typedef struct packed { |
| logic [15:0] data; |
| logic [5:0] syndrome; |
| logic [1:0] err; |
| } secded_22_16_t; |
| |
| typedef struct packed { |
| logic [21:0] data; |
| logic [5:0] syndrome; |
| logic [1:0] err; |
| } secded_28_22_t; |
| |
| typedef struct packed { |
| logic [31:0] data; |
| logic [6:0] syndrome; |
| logic [1:0] err; |
| } secded_39_32_t; |
| |
| typedef struct packed { |
| logic [56:0] data; |
| logic [6:0] syndrome; |
| logic [1:0] err; |
| } secded_64_57_t; |
| |
| typedef struct packed { |
| logic [63:0] data; |
| logic [7:0] syndrome; |
| logic [1:0] err; |
| } secded_72_64_t; |
| |
| typedef struct packed { |
| logic [15:0] data; |
| logic [5:0] syndrome; |
| logic [1:0] err; |
| } secded_hamming_22_16_t; |
| |
| typedef struct packed { |
| logic [31:0] data; |
| logic [6:0] syndrome; |
| logic [1:0] err; |
| } secded_hamming_39_32_t; |
| |
| typedef struct packed { |
| logic [63:0] data; |
| logic [7:0] syndrome; |
| logic [1:0] err; |
| } secded_hamming_72_64_t; |
| |
| function automatic logic [21:0] prim_secded_22_16_enc (logic [15:0] data_i); |
| logic [21:0] data_o; |
| data_o = 22'(data_i); |
| data_o[16] = ^(data_o & 22'h00496E); |
| data_o[17] = ^(data_o & 22'h00F20B); |
| data_o[18] = ^(data_o & 22'h008ED8); |
| data_o[19] = ^(data_o & 22'h007714); |
| data_o[20] = ^(data_o & 22'h00ACA5); |
| data_o[21] = ^(data_o & 22'h0011F3); |
| return data_o; |
| endfunction |
| |
| function automatic secded_22_16_t prim_secded_22_16_dec (logic [21:0] data_i); |
| logic [15:0] data_o; |
| logic [5:0] syndrome_o; |
| logic [1:0] err_o; |
| |
| secded_22_16_t dec; |
| |
| logic single_error; |
| |
| // Syndrome calculation |
| syndrome_o[0] = ^(data_i & 22'h01496E); |
| syndrome_o[1] = ^(data_i & 22'h02F20B); |
| syndrome_o[2] = ^(data_i & 22'h048ED8); |
| syndrome_o[3] = ^(data_i & 22'h087714); |
| syndrome_o[4] = ^(data_i & 22'h10ACA5); |
| syndrome_o[5] = ^(data_i & 22'h2011F3); |
| |
| // Corrected output calculation |
| data_o[0] = (syndrome_o == 6'h32) ^ data_i[0]; |
| data_o[1] = (syndrome_o == 6'h23) ^ data_i[1]; |
| data_o[2] = (syndrome_o == 6'h19) ^ data_i[2]; |
| data_o[3] = (syndrome_o == 6'h7) ^ data_i[3]; |
| data_o[4] = (syndrome_o == 6'h2c) ^ data_i[4]; |
| data_o[5] = (syndrome_o == 6'h31) ^ data_i[5]; |
| data_o[6] = (syndrome_o == 6'h25) ^ data_i[6]; |
| data_o[7] = (syndrome_o == 6'h34) ^ data_i[7]; |
| data_o[8] = (syndrome_o == 6'h29) ^ data_i[8]; |
| data_o[9] = (syndrome_o == 6'he) ^ data_i[9]; |
| data_o[10] = (syndrome_o == 6'h1c) ^ data_i[10]; |
| data_o[11] = (syndrome_o == 6'h15) ^ data_i[11]; |
| data_o[12] = (syndrome_o == 6'h2a) ^ data_i[12]; |
| data_o[13] = (syndrome_o == 6'h1a) ^ data_i[13]; |
| data_o[14] = (syndrome_o == 6'hb) ^ data_i[14]; |
| data_o[15] = (syndrome_o == 6'h16) ^ data_i[15]; |
| |
| // err_o calc. bit0: single error, bit1: double error |
| single_error = ^syndrome_o; |
| err_o[0] = single_error; |
| err_o[1] = ~single_error & (|syndrome_o); |
| |
| dec.data = data_o; |
| dec.syndrome = syndrome_o; |
| dec.err = err_o; |
| return dec; |
| |
| endfunction |
| |
| function automatic logic [27:0] prim_secded_28_22_enc (logic [21:0] data_i); |
| logic [27:0] data_o; |
| data_o = 28'(data_i); |
| data_o[22] = ^(data_o & 28'h03003FF); |
| data_o[23] = ^(data_o & 28'h010FC0F); |
| data_o[24] = ^(data_o & 28'h0271C71); |
| data_o[25] = ^(data_o & 28'h03B6592); |
| data_o[26] = ^(data_o & 28'h03DAAA4); |
| data_o[27] = ^(data_o & 28'h03ED348); |
| return data_o; |
| endfunction |
| |
| function automatic secded_28_22_t prim_secded_28_22_dec (logic [27:0] data_i); |
| logic [21:0] data_o; |
| logic [5:0] syndrome_o; |
| logic [1:0] err_o; |
| |
| secded_28_22_t dec; |
| |
| logic single_error; |
| |
| // Syndrome calculation |
| syndrome_o[0] = ^(data_i & 28'h07003FF); |
| syndrome_o[1] = ^(data_i & 28'h090FC0F); |
| syndrome_o[2] = ^(data_i & 28'h1271C71); |
| syndrome_o[3] = ^(data_i & 28'h23B6592); |
| syndrome_o[4] = ^(data_i & 28'h43DAAA4); |
| syndrome_o[5] = ^(data_i & 28'h83ED348); |
| |
| // Corrected output calculation |
| data_o[0] = (syndrome_o == 6'h7) ^ data_i[0]; |
| data_o[1] = (syndrome_o == 6'hb) ^ data_i[1]; |
| data_o[2] = (syndrome_o == 6'h13) ^ data_i[2]; |
| data_o[3] = (syndrome_o == 6'h23) ^ data_i[3]; |
| data_o[4] = (syndrome_o == 6'hd) ^ data_i[4]; |
| data_o[5] = (syndrome_o == 6'h15) ^ data_i[5]; |
| data_o[6] = (syndrome_o == 6'h25) ^ data_i[6]; |
| data_o[7] = (syndrome_o == 6'h19) ^ data_i[7]; |
| data_o[8] = (syndrome_o == 6'h29) ^ data_i[8]; |
| data_o[9] = (syndrome_o == 6'h31) ^ data_i[9]; |
| data_o[10] = (syndrome_o == 6'he) ^ data_i[10]; |
| data_o[11] = (syndrome_o == 6'h16) ^ data_i[11]; |
| data_o[12] = (syndrome_o == 6'h26) ^ data_i[12]; |
| data_o[13] = (syndrome_o == 6'h1a) ^ data_i[13]; |
| data_o[14] = (syndrome_o == 6'h2a) ^ data_i[14]; |
| data_o[15] = (syndrome_o == 6'h32) ^ data_i[15]; |
| data_o[16] = (syndrome_o == 6'h1c) ^ data_i[16]; |
| data_o[17] = (syndrome_o == 6'h2c) ^ data_i[17]; |
| data_o[18] = (syndrome_o == 6'h34) ^ data_i[18]; |
| data_o[19] = (syndrome_o == 6'h38) ^ data_i[19]; |
| data_o[20] = (syndrome_o == 6'h3b) ^ data_i[20]; |
| data_o[21] = (syndrome_o == 6'h3d) ^ data_i[21]; |
| |
| // err_o calc. bit0: single error, bit1: double error |
| single_error = ^syndrome_o; |
| err_o[0] = single_error; |
| err_o[1] = ~single_error & (|syndrome_o); |
| |
| dec.data = data_o; |
| dec.syndrome = syndrome_o; |
| dec.err = err_o; |
| return dec; |
| |
| endfunction |
| |
| function automatic logic [38:0] prim_secded_39_32_enc (logic [31:0] data_i); |
| logic [38:0] data_o; |
| data_o = 39'(data_i); |
| data_o[32] = ^(data_o & 39'h002606BD25); |
| data_o[33] = ^(data_o & 39'h00DEBA8050); |
| data_o[34] = ^(data_o & 39'h00413D89AA); |
| data_o[35] = ^(data_o & 39'h0031234ED1); |
| data_o[36] = ^(data_o & 39'h00C2C1323B); |
| data_o[37] = ^(data_o & 39'h002DCC624C); |
| data_o[38] = ^(data_o & 39'h0098505586); |
| return data_o; |
| endfunction |
| |
| function automatic secded_39_32_t prim_secded_39_32_dec (logic [38:0] data_i); |
| logic [31:0] data_o; |
| logic [6:0] syndrome_o; |
| logic [1:0] err_o; |
| |
| secded_39_32_t dec; |
| |
| logic single_error; |
| |
| // Syndrome calculation |
| syndrome_o[0] = ^(data_i & 39'h012606BD25); |
| syndrome_o[1] = ^(data_i & 39'h02DEBA8050); |
| syndrome_o[2] = ^(data_i & 39'h04413D89AA); |
| syndrome_o[3] = ^(data_i & 39'h0831234ED1); |
| syndrome_o[4] = ^(data_i & 39'h10C2C1323B); |
| syndrome_o[5] = ^(data_i & 39'h202DCC624C); |
| syndrome_o[6] = ^(data_i & 39'h4098505586); |
| |
| // Corrected output calculation |
| data_o[0] = (syndrome_o == 7'h19) ^ data_i[0]; |
| data_o[1] = (syndrome_o == 7'h54) ^ data_i[1]; |
| data_o[2] = (syndrome_o == 7'h61) ^ data_i[2]; |
| data_o[3] = (syndrome_o == 7'h34) ^ data_i[3]; |
| data_o[4] = (syndrome_o == 7'h1a) ^ data_i[4]; |
| data_o[5] = (syndrome_o == 7'h15) ^ data_i[5]; |
| data_o[6] = (syndrome_o == 7'h2a) ^ data_i[6]; |
| data_o[7] = (syndrome_o == 7'h4c) ^ data_i[7]; |
| data_o[8] = (syndrome_o == 7'h45) ^ data_i[8]; |
| data_o[9] = (syndrome_o == 7'h38) ^ data_i[9]; |
| data_o[10] = (syndrome_o == 7'h49) ^ data_i[10]; |
| data_o[11] = (syndrome_o == 7'hd) ^ data_i[11]; |
| data_o[12] = (syndrome_o == 7'h51) ^ data_i[12]; |
| data_o[13] = (syndrome_o == 7'h31) ^ data_i[13]; |
| data_o[14] = (syndrome_o == 7'h68) ^ data_i[14]; |
| data_o[15] = (syndrome_o == 7'h7) ^ data_i[15]; |
| data_o[16] = (syndrome_o == 7'h1c) ^ data_i[16]; |
| data_o[17] = (syndrome_o == 7'hb) ^ data_i[17]; |
| data_o[18] = (syndrome_o == 7'h25) ^ data_i[18]; |
| data_o[19] = (syndrome_o == 7'h26) ^ data_i[19]; |
| data_o[20] = (syndrome_o == 7'h46) ^ data_i[20]; |
| data_o[21] = (syndrome_o == 7'he) ^ data_i[21]; |
| data_o[22] = (syndrome_o == 7'h70) ^ data_i[22]; |
| data_o[23] = (syndrome_o == 7'h32) ^ data_i[23]; |
| data_o[24] = (syndrome_o == 7'h2c) ^ data_i[24]; |
| data_o[25] = (syndrome_o == 7'h13) ^ data_i[25]; |
| data_o[26] = (syndrome_o == 7'h23) ^ data_i[26]; |
| data_o[27] = (syndrome_o == 7'h62) ^ data_i[27]; |
| data_o[28] = (syndrome_o == 7'h4a) ^ data_i[28]; |
| data_o[29] = (syndrome_o == 7'h29) ^ data_i[29]; |
| data_o[30] = (syndrome_o == 7'h16) ^ data_i[30]; |
| data_o[31] = (syndrome_o == 7'h52) ^ data_i[31]; |
| |
| // err_o calc. bit0: single error, bit1: double error |
| single_error = ^syndrome_o; |
| err_o[0] = single_error; |
| err_o[1] = ~single_error & (|syndrome_o); |
| |
| dec.data = data_o; |
| dec.syndrome = syndrome_o; |
| dec.err = err_o; |
| return dec; |
| |
| endfunction |
| |
| function automatic logic [63:0] prim_secded_64_57_enc (logic [56:0] data_i); |
| logic [63:0] data_o; |
| data_o = 64'(data_i); |
| data_o[57] = ^(data_o & 64'h0103FFF800007FFF); |
| data_o[58] = ^(data_o & 64'h017C1FF801FF801F); |
| data_o[59] = ^(data_o & 64'h01BDE1F87E0781E1); |
| data_o[60] = ^(data_o & 64'h01DEEE3B8E388E22); |
| data_o[61] = ^(data_o & 64'h01EF76CDB2C93244); |
| data_o[62] = ^(data_o & 64'h01F7BB56D5525488); |
| data_o[63] = ^(data_o & 64'h01FBDDA769A46910); |
| return data_o; |
| endfunction |
| |
| function automatic secded_64_57_t prim_secded_64_57_dec (logic [63:0] data_i); |
| logic [56:0] data_o; |
| logic [6:0] syndrome_o; |
| logic [1:0] err_o; |
| |
| secded_64_57_t dec; |
| |
| logic single_error; |
| |
| // Syndrome calculation |
| syndrome_o[0] = ^(data_i & 64'h0303FFF800007FFF); |
| syndrome_o[1] = ^(data_i & 64'h057C1FF801FF801F); |
| syndrome_o[2] = ^(data_i & 64'h09BDE1F87E0781E1); |
| syndrome_o[3] = ^(data_i & 64'h11DEEE3B8E388E22); |
| syndrome_o[4] = ^(data_i & 64'h21EF76CDB2C93244); |
| syndrome_o[5] = ^(data_i & 64'h41F7BB56D5525488); |
| syndrome_o[6] = ^(data_i & 64'h81FBDDA769A46910); |
| |
| // Corrected output calculation |
| data_o[0] = (syndrome_o == 7'h7) ^ data_i[0]; |
| data_o[1] = (syndrome_o == 7'hb) ^ data_i[1]; |
| data_o[2] = (syndrome_o == 7'h13) ^ data_i[2]; |
| data_o[3] = (syndrome_o == 7'h23) ^ data_i[3]; |
| data_o[4] = (syndrome_o == 7'h43) ^ data_i[4]; |
| data_o[5] = (syndrome_o == 7'hd) ^ data_i[5]; |
| data_o[6] = (syndrome_o == 7'h15) ^ data_i[6]; |
| data_o[7] = (syndrome_o == 7'h25) ^ data_i[7]; |
| data_o[8] = (syndrome_o == 7'h45) ^ data_i[8]; |
| data_o[9] = (syndrome_o == 7'h19) ^ data_i[9]; |
| data_o[10] = (syndrome_o == 7'h29) ^ data_i[10]; |
| data_o[11] = (syndrome_o == 7'h49) ^ data_i[11]; |
| data_o[12] = (syndrome_o == 7'h31) ^ data_i[12]; |
| data_o[13] = (syndrome_o == 7'h51) ^ data_i[13]; |
| data_o[14] = (syndrome_o == 7'h61) ^ data_i[14]; |
| data_o[15] = (syndrome_o == 7'he) ^ data_i[15]; |
| data_o[16] = (syndrome_o == 7'h16) ^ data_i[16]; |
| data_o[17] = (syndrome_o == 7'h26) ^ data_i[17]; |
| data_o[18] = (syndrome_o == 7'h46) ^ data_i[18]; |
| data_o[19] = (syndrome_o == 7'h1a) ^ data_i[19]; |
| data_o[20] = (syndrome_o == 7'h2a) ^ data_i[20]; |
| data_o[21] = (syndrome_o == 7'h4a) ^ data_i[21]; |
| data_o[22] = (syndrome_o == 7'h32) ^ data_i[22]; |
| data_o[23] = (syndrome_o == 7'h52) ^ data_i[23]; |
| data_o[24] = (syndrome_o == 7'h62) ^ data_i[24]; |
| data_o[25] = (syndrome_o == 7'h1c) ^ data_i[25]; |
| data_o[26] = (syndrome_o == 7'h2c) ^ data_i[26]; |
| data_o[27] = (syndrome_o == 7'h4c) ^ data_i[27]; |
| data_o[28] = (syndrome_o == 7'h34) ^ data_i[28]; |
| data_o[29] = (syndrome_o == 7'h54) ^ data_i[29]; |
| data_o[30] = (syndrome_o == 7'h64) ^ data_i[30]; |
| data_o[31] = (syndrome_o == 7'h38) ^ data_i[31]; |
| data_o[32] = (syndrome_o == 7'h58) ^ data_i[32]; |
| data_o[33] = (syndrome_o == 7'h68) ^ data_i[33]; |
| data_o[34] = (syndrome_o == 7'h70) ^ data_i[34]; |
| data_o[35] = (syndrome_o == 7'h1f) ^ data_i[35]; |
| data_o[36] = (syndrome_o == 7'h2f) ^ data_i[36]; |
| data_o[37] = (syndrome_o == 7'h4f) ^ data_i[37]; |
| data_o[38] = (syndrome_o == 7'h37) ^ data_i[38]; |
| data_o[39] = (syndrome_o == 7'h57) ^ data_i[39]; |
| data_o[40] = (syndrome_o == 7'h67) ^ data_i[40]; |
| data_o[41] = (syndrome_o == 7'h3b) ^ data_i[41]; |
| data_o[42] = (syndrome_o == 7'h5b) ^ data_i[42]; |
| data_o[43] = (syndrome_o == 7'h6b) ^ data_i[43]; |
| data_o[44] = (syndrome_o == 7'h73) ^ data_i[44]; |
| data_o[45] = (syndrome_o == 7'h3d) ^ data_i[45]; |
| data_o[46] = (syndrome_o == 7'h5d) ^ data_i[46]; |
| data_o[47] = (syndrome_o == 7'h6d) ^ data_i[47]; |
| data_o[48] = (syndrome_o == 7'h75) ^ data_i[48]; |
| data_o[49] = (syndrome_o == 7'h79) ^ data_i[49]; |
| data_o[50] = (syndrome_o == 7'h3e) ^ data_i[50]; |
| data_o[51] = (syndrome_o == 7'h5e) ^ data_i[51]; |
| data_o[52] = (syndrome_o == 7'h6e) ^ data_i[52]; |
| data_o[53] = (syndrome_o == 7'h76) ^ data_i[53]; |
| data_o[54] = (syndrome_o == 7'h7a) ^ data_i[54]; |
| data_o[55] = (syndrome_o == 7'h7c) ^ data_i[55]; |
| data_o[56] = (syndrome_o == 7'h7f) ^ data_i[56]; |
| |
| // err_o calc. bit0: single error, bit1: double error |
| single_error = ^syndrome_o; |
| err_o[0] = single_error; |
| err_o[1] = ~single_error & (|syndrome_o); |
| |
| dec.data = data_o; |
| dec.syndrome = syndrome_o; |
| dec.err = err_o; |
| return dec; |
| |
| endfunction |
| |
| function automatic logic [71:0] prim_secded_72_64_enc (logic [63:0] data_i); |
| logic [71:0] data_o; |
| data_o = 72'(data_i); |
| data_o[64] = ^(data_o & 72'h00B9000000001FFFFF); |
| data_o[65] = ^(data_o & 72'h005E00000FFFE0003F); |
| data_o[66] = ^(data_o & 72'h0067003FF003E007C1); |
| data_o[67] = ^(data_o & 72'h00CD0FC0F03C207842); |
| data_o[68] = ^(data_o & 72'h00B671C711C4438884); |
| data_o[69] = ^(data_o & 72'h00B5B65926488C9108); |
| data_o[70] = ^(data_o & 72'h00CBDAAA4A91152210); |
| data_o[71] = ^(data_o & 72'h007AED348D221A4420); |
| return data_o; |
| endfunction |
| |
| function automatic secded_72_64_t prim_secded_72_64_dec (logic [71:0] data_i); |
| logic [63:0] data_o; |
| logic [7:0] syndrome_o; |
| logic [1:0] err_o; |
| |
| secded_72_64_t dec; |
| |
| logic single_error; |
| |
| // Syndrome calculation |
| syndrome_o[0] = ^(data_i & 72'h01B9000000001FFFFF); |
| syndrome_o[1] = ^(data_i & 72'h025E00000FFFE0003F); |
| syndrome_o[2] = ^(data_i & 72'h0467003FF003E007C1); |
| syndrome_o[3] = ^(data_i & 72'h08CD0FC0F03C207842); |
| syndrome_o[4] = ^(data_i & 72'h10B671C711C4438884); |
| syndrome_o[5] = ^(data_i & 72'h20B5B65926488C9108); |
| syndrome_o[6] = ^(data_i & 72'h40CBDAAA4A91152210); |
| syndrome_o[7] = ^(data_i & 72'h807AED348D221A4420); |
| |
| // Corrected output calculation |
| data_o[0] = (syndrome_o == 8'h7) ^ data_i[0]; |
| data_o[1] = (syndrome_o == 8'hb) ^ data_i[1]; |
| data_o[2] = (syndrome_o == 8'h13) ^ data_i[2]; |
| data_o[3] = (syndrome_o == 8'h23) ^ data_i[3]; |
| data_o[4] = (syndrome_o == 8'h43) ^ data_i[4]; |
| data_o[5] = (syndrome_o == 8'h83) ^ data_i[5]; |
| data_o[6] = (syndrome_o == 8'hd) ^ data_i[6]; |
| data_o[7] = (syndrome_o == 8'h15) ^ data_i[7]; |
| data_o[8] = (syndrome_o == 8'h25) ^ data_i[8]; |
| data_o[9] = (syndrome_o == 8'h45) ^ data_i[9]; |
| data_o[10] = (syndrome_o == 8'h85) ^ data_i[10]; |
| data_o[11] = (syndrome_o == 8'h19) ^ data_i[11]; |
| data_o[12] = (syndrome_o == 8'h29) ^ data_i[12]; |
| data_o[13] = (syndrome_o == 8'h49) ^ data_i[13]; |
| data_o[14] = (syndrome_o == 8'h89) ^ data_i[14]; |
| data_o[15] = (syndrome_o == 8'h31) ^ data_i[15]; |
| data_o[16] = (syndrome_o == 8'h51) ^ data_i[16]; |
| data_o[17] = (syndrome_o == 8'h91) ^ data_i[17]; |
| data_o[18] = (syndrome_o == 8'h61) ^ data_i[18]; |
| data_o[19] = (syndrome_o == 8'ha1) ^ data_i[19]; |
| data_o[20] = (syndrome_o == 8'hc1) ^ data_i[20]; |
| data_o[21] = (syndrome_o == 8'he) ^ data_i[21]; |
| data_o[22] = (syndrome_o == 8'h16) ^ data_i[22]; |
| data_o[23] = (syndrome_o == 8'h26) ^ data_i[23]; |
| data_o[24] = (syndrome_o == 8'h46) ^ data_i[24]; |
| data_o[25] = (syndrome_o == 8'h86) ^ data_i[25]; |
| data_o[26] = (syndrome_o == 8'h1a) ^ data_i[26]; |
| data_o[27] = (syndrome_o == 8'h2a) ^ data_i[27]; |
| data_o[28] = (syndrome_o == 8'h4a) ^ data_i[28]; |
| data_o[29] = (syndrome_o == 8'h8a) ^ data_i[29]; |
| data_o[30] = (syndrome_o == 8'h32) ^ data_i[30]; |
| data_o[31] = (syndrome_o == 8'h52) ^ data_i[31]; |
| data_o[32] = (syndrome_o == 8'h92) ^ data_i[32]; |
| data_o[33] = (syndrome_o == 8'h62) ^ data_i[33]; |
| data_o[34] = (syndrome_o == 8'ha2) ^ data_i[34]; |
| data_o[35] = (syndrome_o == 8'hc2) ^ data_i[35]; |
| data_o[36] = (syndrome_o == 8'h1c) ^ data_i[36]; |
| data_o[37] = (syndrome_o == 8'h2c) ^ data_i[37]; |
| data_o[38] = (syndrome_o == 8'h4c) ^ data_i[38]; |
| data_o[39] = (syndrome_o == 8'h8c) ^ data_i[39]; |
| data_o[40] = (syndrome_o == 8'h34) ^ data_i[40]; |
| data_o[41] = (syndrome_o == 8'h54) ^ data_i[41]; |
| data_o[42] = (syndrome_o == 8'h94) ^ data_i[42]; |
| data_o[43] = (syndrome_o == 8'h64) ^ data_i[43]; |
| data_o[44] = (syndrome_o == 8'ha4) ^ data_i[44]; |
| data_o[45] = (syndrome_o == 8'hc4) ^ data_i[45]; |
| data_o[46] = (syndrome_o == 8'h38) ^ data_i[46]; |
| data_o[47] = (syndrome_o == 8'h58) ^ data_i[47]; |
| data_o[48] = (syndrome_o == 8'h98) ^ data_i[48]; |
| data_o[49] = (syndrome_o == 8'h68) ^ data_i[49]; |
| data_o[50] = (syndrome_o == 8'ha8) ^ data_i[50]; |
| data_o[51] = (syndrome_o == 8'hc8) ^ data_i[51]; |
| data_o[52] = (syndrome_o == 8'h70) ^ data_i[52]; |
| data_o[53] = (syndrome_o == 8'hb0) ^ data_i[53]; |
| data_o[54] = (syndrome_o == 8'hd0) ^ data_i[54]; |
| data_o[55] = (syndrome_o == 8'he0) ^ data_i[55]; |
| data_o[56] = (syndrome_o == 8'h6d) ^ data_i[56]; |
| data_o[57] = (syndrome_o == 8'hd6) ^ data_i[57]; |
| data_o[58] = (syndrome_o == 8'h3e) ^ data_i[58]; |
| data_o[59] = (syndrome_o == 8'hcb) ^ data_i[59]; |
| data_o[60] = (syndrome_o == 8'hb3) ^ data_i[60]; |
| data_o[61] = (syndrome_o == 8'hb5) ^ data_i[61]; |
| data_o[62] = (syndrome_o == 8'hce) ^ data_i[62]; |
| data_o[63] = (syndrome_o == 8'h79) ^ data_i[63]; |
| |
| // err_o calc. bit0: single error, bit1: double error |
| single_error = ^syndrome_o; |
| err_o[0] = single_error; |
| err_o[1] = ~single_error & (|syndrome_o); |
| |
| dec.data = data_o; |
| dec.syndrome = syndrome_o; |
| dec.err = err_o; |
| return dec; |
| |
| endfunction |
| |
| function automatic logic [21:0] prim_secded_hamming_22_16_enc (logic [15:0] data_i); |
| logic [21:0] data_o; |
| data_o = 22'(data_i); |
| data_o[16] = ^(data_o & 22'h00AD5B); |
| data_o[17] = ^(data_o & 22'h00366D); |
| data_o[18] = ^(data_o & 22'h00C78E); |
| data_o[19] = ^(data_o & 22'h0007F0); |
| data_o[20] = ^(data_o & 22'h00F800); |
| data_o[21] = ^(data_o & 22'h1FFFFF); |
| return data_o; |
| endfunction |
| |
| function automatic secded_22_16_t prim_secded_hamming_22_16_dec (logic [21:0] data_i); |
| logic [15:0] data_o; |
| logic [5:0] syndrome_o; |
| logic [1:0] err_o; |
| |
| secded_22_16_t dec; |
| |
| |
| // Syndrome calculation |
| syndrome_o[0] = ^(data_i & 22'h01AD5B); |
| syndrome_o[1] = ^(data_i & 22'h02366D); |
| syndrome_o[2] = ^(data_i & 22'h04C78E); |
| syndrome_o[3] = ^(data_i & 22'h0807F0); |
| syndrome_o[4] = ^(data_i & 22'h10F800); |
| syndrome_o[5] = ^(data_i & 22'h3FFFFF); |
| |
| // Corrected output calculation |
| data_o[0] = (syndrome_o == 6'h23) ^ data_i[0]; |
| data_o[1] = (syndrome_o == 6'h25) ^ data_i[1]; |
| data_o[2] = (syndrome_o == 6'h26) ^ data_i[2]; |
| data_o[3] = (syndrome_o == 6'h27) ^ data_i[3]; |
| data_o[4] = (syndrome_o == 6'h29) ^ data_i[4]; |
| data_o[5] = (syndrome_o == 6'h2a) ^ data_i[5]; |
| data_o[6] = (syndrome_o == 6'h2b) ^ data_i[6]; |
| data_o[7] = (syndrome_o == 6'h2c) ^ data_i[7]; |
| data_o[8] = (syndrome_o == 6'h2d) ^ data_i[8]; |
| data_o[9] = (syndrome_o == 6'h2e) ^ data_i[9]; |
| data_o[10] = (syndrome_o == 6'h2f) ^ data_i[10]; |
| data_o[11] = (syndrome_o == 6'h31) ^ data_i[11]; |
| data_o[12] = (syndrome_o == 6'h32) ^ data_i[12]; |
| data_o[13] = (syndrome_o == 6'h33) ^ data_i[13]; |
| data_o[14] = (syndrome_o == 6'h34) ^ data_i[14]; |
| data_o[15] = (syndrome_o == 6'h35) ^ data_i[15]; |
| |
| // err_o calc. bit0: single error, bit1: double error |
| err_o[0] = syndrome_o[5]; |
| err_o[1] = |syndrome_o[4:0] & ~syndrome_o[5]; |
| |
| dec.data = data_o; |
| dec.syndrome = syndrome_o; |
| dec.err = err_o; |
| return dec; |
| |
| endfunction |
| |
| function automatic logic [38:0] prim_secded_hamming_39_32_enc (logic [31:0] data_i); |
| logic [38:0] data_o; |
| data_o = 39'(data_i); |
| data_o[32] = ^(data_o & 39'h0056AAAD5B); |
| data_o[33] = ^(data_o & 39'h009B33366D); |
| data_o[34] = ^(data_o & 39'h00E3C3C78E); |
| data_o[35] = ^(data_o & 39'h0003FC07F0); |
| data_o[36] = ^(data_o & 39'h0003FFF800); |
| data_o[37] = ^(data_o & 39'h00FC000000); |
| data_o[38] = ^(data_o & 39'h3FFFFFFFFF); |
| return data_o; |
| endfunction |
| |
| function automatic secded_39_32_t prim_secded_hamming_39_32_dec (logic [38:0] data_i); |
| logic [31:0] data_o; |
| logic [6:0] syndrome_o; |
| logic [1:0] err_o; |
| |
| secded_39_32_t dec; |
| |
| |
| // Syndrome calculation |
| syndrome_o[0] = ^(data_i & 39'h0156AAAD5B); |
| syndrome_o[1] = ^(data_i & 39'h029B33366D); |
| syndrome_o[2] = ^(data_i & 39'h04E3C3C78E); |
| syndrome_o[3] = ^(data_i & 39'h0803FC07F0); |
| syndrome_o[4] = ^(data_i & 39'h1003FFF800); |
| syndrome_o[5] = ^(data_i & 39'h20FC000000); |
| syndrome_o[6] = ^(data_i & 39'h7FFFFFFFFF); |
| |
| // Corrected output calculation |
| data_o[0] = (syndrome_o == 7'h43) ^ data_i[0]; |
| data_o[1] = (syndrome_o == 7'h45) ^ data_i[1]; |
| data_o[2] = (syndrome_o == 7'h46) ^ data_i[2]; |
| data_o[3] = (syndrome_o == 7'h47) ^ data_i[3]; |
| data_o[4] = (syndrome_o == 7'h49) ^ data_i[4]; |
| data_o[5] = (syndrome_o == 7'h4a) ^ data_i[5]; |
| data_o[6] = (syndrome_o == 7'h4b) ^ data_i[6]; |
| data_o[7] = (syndrome_o == 7'h4c) ^ data_i[7]; |
| data_o[8] = (syndrome_o == 7'h4d) ^ data_i[8]; |
| data_o[9] = (syndrome_o == 7'h4e) ^ data_i[9]; |
| data_o[10] = (syndrome_o == 7'h4f) ^ data_i[10]; |
| data_o[11] = (syndrome_o == 7'h51) ^ data_i[11]; |
| data_o[12] = (syndrome_o == 7'h52) ^ data_i[12]; |
| data_o[13] = (syndrome_o == 7'h53) ^ data_i[13]; |
| data_o[14] = (syndrome_o == 7'h54) ^ data_i[14]; |
| data_o[15] = (syndrome_o == 7'h55) ^ data_i[15]; |
| data_o[16] = (syndrome_o == 7'h56) ^ data_i[16]; |
| data_o[17] = (syndrome_o == 7'h57) ^ data_i[17]; |
| data_o[18] = (syndrome_o == 7'h58) ^ data_i[18]; |
| data_o[19] = (syndrome_o == 7'h59) ^ data_i[19]; |
| data_o[20] = (syndrome_o == 7'h5a) ^ data_i[20]; |
| data_o[21] = (syndrome_o == 7'h5b) ^ data_i[21]; |
| data_o[22] = (syndrome_o == 7'h5c) ^ data_i[22]; |
| data_o[23] = (syndrome_o == 7'h5d) ^ data_i[23]; |
| data_o[24] = (syndrome_o == 7'h5e) ^ data_i[24]; |
| data_o[25] = (syndrome_o == 7'h5f) ^ data_i[25]; |
| data_o[26] = (syndrome_o == 7'h61) ^ data_i[26]; |
| data_o[27] = (syndrome_o == 7'h62) ^ data_i[27]; |
| data_o[28] = (syndrome_o == 7'h63) ^ data_i[28]; |
| data_o[29] = (syndrome_o == 7'h64) ^ data_i[29]; |
| data_o[30] = (syndrome_o == 7'h65) ^ data_i[30]; |
| data_o[31] = (syndrome_o == 7'h66) ^ data_i[31]; |
| |
| // err_o calc. bit0: single error, bit1: double error |
| err_o[0] = syndrome_o[6]; |
| err_o[1] = |syndrome_o[5:0] & ~syndrome_o[6]; |
| |
| dec.data = data_o; |
| dec.syndrome = syndrome_o; |
| dec.err = err_o; |
| return dec; |
| |
| endfunction |
| |
| function automatic logic [71:0] prim_secded_hamming_72_64_enc (logic [63:0] data_i); |
| logic [71:0] data_o; |
| data_o = 72'(data_i); |
| data_o[64] = ^(data_o & 72'h00AB55555556AAAD5B); |
| data_o[65] = ^(data_o & 72'h00CD9999999B33366D); |
| data_o[66] = ^(data_o & 72'h00F1E1E1E1E3C3C78E); |
| data_o[67] = ^(data_o & 72'h0001FE01FE03FC07F0); |
| data_o[68] = ^(data_o & 72'h0001FFFE0003FFF800); |
| data_o[69] = ^(data_o & 72'h0001FFFFFFFC000000); |
| data_o[70] = ^(data_o & 72'h00FE00000000000000); |
| data_o[71] = ^(data_o & 72'h7FFFFFFFFFFFFFFFFF); |
| return data_o; |
| endfunction |
| |
| function automatic secded_72_64_t prim_secded_hamming_72_64_dec (logic [71:0] data_i); |
| logic [63:0] data_o; |
| logic [7:0] syndrome_o; |
| logic [1:0] err_o; |
| |
| secded_72_64_t dec; |
| |
| |
| // Syndrome calculation |
| syndrome_o[0] = ^(data_i & 72'h01AB55555556AAAD5B); |
| syndrome_o[1] = ^(data_i & 72'h02CD9999999B33366D); |
| syndrome_o[2] = ^(data_i & 72'h04F1E1E1E1E3C3C78E); |
| syndrome_o[3] = ^(data_i & 72'h0801FE01FE03FC07F0); |
| syndrome_o[4] = ^(data_i & 72'h1001FFFE0003FFF800); |
| syndrome_o[5] = ^(data_i & 72'h2001FFFFFFFC000000); |
| syndrome_o[6] = ^(data_i & 72'h40FE00000000000000); |
| syndrome_o[7] = ^(data_i & 72'hFFFFFFFFFFFFFFFFFF); |
| |
| // Corrected output calculation |
| data_o[0] = (syndrome_o == 8'h83) ^ data_i[0]; |
| data_o[1] = (syndrome_o == 8'h85) ^ data_i[1]; |
| data_o[2] = (syndrome_o == 8'h86) ^ data_i[2]; |
| data_o[3] = (syndrome_o == 8'h87) ^ data_i[3]; |
| data_o[4] = (syndrome_o == 8'h89) ^ data_i[4]; |
| data_o[5] = (syndrome_o == 8'h8a) ^ data_i[5]; |
| data_o[6] = (syndrome_o == 8'h8b) ^ data_i[6]; |
| data_o[7] = (syndrome_o == 8'h8c) ^ data_i[7]; |
| data_o[8] = (syndrome_o == 8'h8d) ^ data_i[8]; |
| data_o[9] = (syndrome_o == 8'h8e) ^ data_i[9]; |
| data_o[10] = (syndrome_o == 8'h8f) ^ data_i[10]; |
| data_o[11] = (syndrome_o == 8'h91) ^ data_i[11]; |
| data_o[12] = (syndrome_o == 8'h92) ^ data_i[12]; |
| data_o[13] = (syndrome_o == 8'h93) ^ data_i[13]; |
| data_o[14] = (syndrome_o == 8'h94) ^ data_i[14]; |
| data_o[15] = (syndrome_o == 8'h95) ^ data_i[15]; |
| data_o[16] = (syndrome_o == 8'h96) ^ data_i[16]; |
| data_o[17] = (syndrome_o == 8'h97) ^ data_i[17]; |
| data_o[18] = (syndrome_o == 8'h98) ^ data_i[18]; |
| data_o[19] = (syndrome_o == 8'h99) ^ data_i[19]; |
| data_o[20] = (syndrome_o == 8'h9a) ^ data_i[20]; |
| data_o[21] = (syndrome_o == 8'h9b) ^ data_i[21]; |
| data_o[22] = (syndrome_o == 8'h9c) ^ data_i[22]; |
| data_o[23] = (syndrome_o == 8'h9d) ^ data_i[23]; |
| data_o[24] = (syndrome_o == 8'h9e) ^ data_i[24]; |
| data_o[25] = (syndrome_o == 8'h9f) ^ data_i[25]; |
| data_o[26] = (syndrome_o == 8'ha1) ^ data_i[26]; |
| data_o[27] = (syndrome_o == 8'ha2) ^ data_i[27]; |
| data_o[28] = (syndrome_o == 8'ha3) ^ data_i[28]; |
| data_o[29] = (syndrome_o == 8'ha4) ^ data_i[29]; |
| data_o[30] = (syndrome_o == 8'ha5) ^ data_i[30]; |
| data_o[31] = (syndrome_o == 8'ha6) ^ data_i[31]; |
| data_o[32] = (syndrome_o == 8'ha7) ^ data_i[32]; |
| data_o[33] = (syndrome_o == 8'ha8) ^ data_i[33]; |
| data_o[34] = (syndrome_o == 8'ha9) ^ data_i[34]; |
| data_o[35] = (syndrome_o == 8'haa) ^ data_i[35]; |
| data_o[36] = (syndrome_o == 8'hab) ^ data_i[36]; |
| data_o[37] = (syndrome_o == 8'hac) ^ data_i[37]; |
| data_o[38] = (syndrome_o == 8'had) ^ data_i[38]; |
| data_o[39] = (syndrome_o == 8'hae) ^ data_i[39]; |
| data_o[40] = (syndrome_o == 8'haf) ^ data_i[40]; |
| data_o[41] = (syndrome_o == 8'hb0) ^ data_i[41]; |
| data_o[42] = (syndrome_o == 8'hb1) ^ data_i[42]; |
| data_o[43] = (syndrome_o == 8'hb2) ^ data_i[43]; |
| data_o[44] = (syndrome_o == 8'hb3) ^ data_i[44]; |
| data_o[45] = (syndrome_o == 8'hb4) ^ data_i[45]; |
| data_o[46] = (syndrome_o == 8'hb5) ^ data_i[46]; |
| data_o[47] = (syndrome_o == 8'hb6) ^ data_i[47]; |
| data_o[48] = (syndrome_o == 8'hb7) ^ data_i[48]; |
| data_o[49] = (syndrome_o == 8'hb8) ^ data_i[49]; |
| data_o[50] = (syndrome_o == 8'hb9) ^ data_i[50]; |
| data_o[51] = (syndrome_o == 8'hba) ^ data_i[51]; |
| data_o[52] = (syndrome_o == 8'hbb) ^ data_i[52]; |
| data_o[53] = (syndrome_o == 8'hbc) ^ data_i[53]; |
| data_o[54] = (syndrome_o == 8'hbd) ^ data_i[54]; |
| data_o[55] = (syndrome_o == 8'hbe) ^ data_i[55]; |
| data_o[56] = (syndrome_o == 8'hbf) ^ data_i[56]; |
| data_o[57] = (syndrome_o == 8'hc1) ^ data_i[57]; |
| data_o[58] = (syndrome_o == 8'hc2) ^ data_i[58]; |
| data_o[59] = (syndrome_o == 8'hc3) ^ data_i[59]; |
| data_o[60] = (syndrome_o == 8'hc4) ^ data_i[60]; |
| data_o[61] = (syndrome_o == 8'hc5) ^ data_i[61]; |
| data_o[62] = (syndrome_o == 8'hc6) ^ data_i[62]; |
| data_o[63] = (syndrome_o == 8'hc7) ^ data_i[63]; |
| |
| // err_o calc. bit0: single error, bit1: double error |
| err_o[0] = syndrome_o[7]; |
| err_o[1] = |syndrome_o[6:0] & ~syndrome_o[7]; |
| |
| dec.data = data_o; |
| dec.syndrome = syndrome_o; |
| dec.err = err_o; |
| return dec; |
| |
| endfunction |
| |
| |
| endpackage |
