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1 | // ========== Copyright Header Begin ========================================== |
2 | // | |
3 | // OpenSPARC T2 Processor File: siu_common.vr | |
4 | // Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved | |
5 | // 4150 Network Circle, Santa Clara, California 95054, U.S.A. | |
6 | // | |
7 | // * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
8 | // | |
9 | // This program is free software; you can redistribute it and/or modify | |
10 | // it under the terms of the GNU General Public License as published by | |
11 | // the Free Software Foundation; version 2 of the License. | |
12 | // | |
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | // | |
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | // | |
22 | // For the avoidance of doubt, and except that if any non-GPL license | |
23 | // choice is available it will apply instead, Sun elects to use only | |
24 | // the General Public License version 2 (GPLv2) at this time for any | |
25 | // software where a choice of GPL license versions is made | |
26 | // available with the language indicating that GPLv2 or any later version | |
27 | // may be used, or where a choice of which version of the GPL is applied is | |
28 | // otherwise unspecified. | |
29 | // | |
30 | // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
31 | // CA 95054 USA or visit www.sun.com if you need additional information or | |
32 | // have any questions. | |
33 | // | |
34 | // ========== Copyright Header End ============================================ | |
35 | #include <vera_defines.vrh> | |
36 | ||
37 | function reg[2:0] pbank_sel(reg[3:0] pbank, reg[2:0] bank_sel) | |
38 | { | |
39 | reg [2:0] result = bank_sel; | |
40 | ||
41 | case (pbank) { | |
42 | 4'b0001: result[2:1] = 2'b0; | |
43 | 4'b0010: result[2:1] = 2'b01; | |
44 | 4'b0011: result[2] = 1'b0; | |
45 | 4'b0100: result[2:1] = 2'b10; | |
46 | 4'b0101: result[2:1] = {bank_sel[1], 1'b0}; | |
47 | 4'b0110: result[2:1] = {bank_sel[1], ~bank_sel[1]}; | |
48 | 4'b1000: result[2:1] = 2'b11; | |
49 | 4'b1001: result[2:1] = {bank_sel[1], bank_sel[1]}; | |
50 | 4'b1010: result[1] = 1'b1; | |
51 | 4'b1100: result[2:1] = {1'b1, bank_sel[1]}; | |
52 | 4'b1111: result = bank_sel; | |
53 | default: | |
54 | printf ("ERROR! illegal partial bank selections!\n"); | |
55 | } | |
56 | ||
57 | pbank_sel = result; | |
58 | } | |
59 | ||
60 | function reg[1:0] interleave_parity(reg[39:0] data, integer size) | |
61 | { | |
62 | integer i; | |
63 | reg oparity = 0; | |
64 | reg eparity = 0; | |
65 | ||
66 | size = (size > 40) ? 40 : size; | |
67 | ||
68 | for (i=0; i<size; i=i+2) eparity ^= data[i]; | |
69 | for (i=1; i<size; i=i+2) oparity ^= data[i]; | |
70 | ||
71 | interleave_parity = {~oparity, ~eparity}; | |
72 | } | |
73 | ||
74 | function reg[5:0] gen_ctag_ecc(reg[15:0] data) | |
75 | { | |
76 | bit [5:0] temp_ecc; | |
77 | ||
78 | temp_ecc[0] = data[0] ^ data[1] ^ data[3] ^ data[4] ^ data[6] ^ data[8] ^ | |
79 | data[10] ^ data[11] ^ data[13] ^ data[15]; | |
80 | ||
81 | temp_ecc[1] = data[0] ^ data[2] ^ data[3] ^ data[5] ^ data[6] ^ data[9] ^ | |
82 | data[10] ^ data[12] ^ data[13]; | |
83 | ||
84 | temp_ecc[2] = data[1] ^ data[2] ^ data[3] ^ data[7] ^ data[8] ^ data[9] ^ | |
85 | data[10] ^ data[14] ^ data[15]; | |
86 | ||
87 | temp_ecc[3] = data[4] ^ data[5] ^ data[6] ^ data[7] ^ data[8] ^ data[9] ^ | |
88 | data[10]; | |
89 | ||
90 | temp_ecc[4] = data[11] ^ data[12] ^ data[13] ^ data[14] ^ data[15]; | |
91 | ||
92 | //temp_ecc[5] = ~(temp_ecc[0] ^ temp_ecc[1] ^ temp_ecc[2] ^ temp_ecc[3] ^ temp_ecc[4]); | |
93 | temp_ecc[5] = data[0] ^ data[1] ^ data[2] ^ data[3] ^ temp_ecc[0] ^ temp_ecc[1] ^ temp_ecc[2]; | |
94 | gen_ctag_ecc = temp_ecc; | |
95 | } | |
96 | ||
97 | function reg gen_beparity(reg[15:0] data) | |
98 | { | |
99 | bit temp_beparity; | |
100 | ||
101 | temp_beparity = data[0] ^ data[1] ^ data[2] ^ data[3] ^ data[4] ^ data[5] ^ data[6] ^ data[7] ^ data[8] ^ data[9] ^ data[10] ^ data[11] ^ data[12] ^ data[13] ^ data[14] ^ data[15]; | |
102 | gen_beparity = !(temp_beparity); | |
103 | } |