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1 | // ========== Copyright Header Begin ========================================== |
2 | // | |
3 | // OpenSPARC T2 Processor File: niu_siu_packet.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 | #include <ListMacros.vrh> | |
37 | ||
38 | #include "niu_mem.vrh" | |
39 | #include "smx_defines.vri" | |
40 | #include "niu_error_dfn.vri" | |
41 | #include "niu_cbclass.vrh" | |
42 | #include "hostErrInjTab.vrh" | |
43 | ||
44 | class Csiu_packet { | |
45 | ||
46 | // SIU Interface Packets | |
47 | ||
48 | // header | |
49 | bit [5:0] command; // bits 127:122 | |
50 | /* | |
51 | Command Encoding-- | |
52 | ||
53 | NIU to SIU | |
54 | -- Read Request command Encoding | |
55 | command[5] - response bit - 0 | |
56 | command[4] - posted bit - 0 | |
57 | command[3] - read bit - 1 | |
58 | command[2] - WriteByteMask Active bit - 0 | |
59 | command[1] - L2 bit - 1 | |
60 | command[0] - NCU bit - 0 | |
61 | ||
62 | command = 6'h0a; | |
63 | -- Write Request command Encoding | |
64 | command[5] - response bit - 0 | |
65 | command[4] - posted bit - 0 -- if ack is needed else 1 | |
66 | command[3] - read bit - 0 | |
67 | command[2] - WriteByteMask Active bit - 0 | |
68 | command[1] - L2 bit - 1 | |
69 | command[0] - NCU bit - 0 | |
70 | ||
71 | ||
72 | command = 6'h12 for write ack ; command = 6'h02 - for posted writes; | |
73 | ||
74 | SIU to NIU | |
75 | -- Read Response Command Encoding | |
76 | command[5] - response bit - 1 | |
77 | command[4] - posted bit - 0 | |
78 | command[3] - read bit - 1 | |
79 | command[2] - WriteByteMask Active bit - 0 | |
80 | command[1] - L2 bit - 1 | |
81 | command[0] - NCU bit - 0 | |
82 | ||
83 | command = 6'h2a; | |
84 | -- Write Response Command Encoding | |
85 | command[5] - response bit - 1 | |
86 | command[4] - posted bit - 0 | |
87 | command[3] - read bit - 0 | |
88 | command[2] - WriteByteMask Active bit - 0 | |
89 | command[1] - L2 bit - 1 | |
90 | command[0] - NCU bit - 0 | |
91 | ||
92 | command = 6'h22; | |
93 | ||
94 | ||
95 | */ | |
96 | bit TimeOutError; // bit 82:82 | |
97 | bit UnmappedAddressError; // bit 81:81 | |
98 | bit UncorrectableError; // bit 80:80 | |
99 | bit [15:0] id; // bits 79:64 | |
100 | bit [39:0] PA; | |
101 | bit [5:0] CtagEcc; | |
102 | bit CP; | |
103 | bit [1:0] AP; | |
104 | ||
105 | bit [127:0] header; | |
106 | ||
107 | ||
108 | // payload | |
109 | bit [63:0] data[]; | |
110 | bit [7:0] be[]; // byte enables | |
111 | bit [7:0] data_parity[]; | |
112 | ||
113 | integer NoOf8Bytes; | |
114 | ||
115 | task create_header () { | |
116 | header[127:122] = command; | |
117 | header[121:83] = 39'h0; | |
118 | header[82] = TimeOutError; | |
119 | header[81] = UnmappedAddressError; | |
120 | header[80] = UncorrectableError; | |
121 | header[61:56] = CtagEcc; | |
122 | header[79:64] = id; | |
123 | header[63:40] = 24'h0; | |
124 | header[39:0] = PA; | |
125 | } | |
126 | ||
127 | task parse_header( bit [127:0] h, (bit check_parity = 0) ) { | |
128 | bit parity; | |
129 | integer i; | |
130 | command = h[127:122]; | |
131 | AP = h[84:83]; | |
132 | TimeOutError= h[82] ; | |
133 | UnmappedAddressError = h[81]; | |
134 | UncorrectableError = h[80] ; | |
135 | CP = h[62]; | |
136 | CtagEcc = h[61:56]; | |
137 | id = h[79:64] ; | |
138 | PA = h[39:0] ; | |
139 | // printf(" Header - %x Command = %x \n",h,command); | |
140 | // This should be part of checker and not here-- | |
141 | // check_CP | |
142 | ||
143 | if(check_parity) { | |
144 | parity = CP^command[0]^command[1]^command[2]^command[3]^command[4]^command[5]; | |
145 | if(parity!==1) { | |
146 | printf("Time:%d WARNING SIU Header - CommandParity Incorrect for ID - %x \n",TIME,h[79:64]); | |
147 | } | |
148 | ||
149 | // check_AP | |
150 | parity = 0; | |
151 | for(i = 0 ; i < 20 ; i ++) { | |
152 | parity = parity ^ PA[2*i]; | |
153 | } | |
154 | parity = parity ^ AP[0]; | |
155 | if(parity!==1) { | |
156 | printf("Time:%d WARNING SIU Header - AddressParity [0] Incorrect for ID - %x \n",TIME,h[79:64]); | |
157 | } | |
158 | parity = 0; | |
159 | for(i = 0 ; i < 20 ; i ++) { | |
160 | parity = parity ^ PA[2*i + 1]; | |
161 | } | |
162 | parity = parity ^ AP[1]; | |
163 | if(parity!==1) { | |
164 | printf("Time:%d WARNING SIU Header - AddressParity [1] Incorrect for ID - %x \n",TIME,h[79:64]); | |
165 | } | |
166 | } | |
167 | } | |
168 | ||
169 | ||
170 | task new( integer n =8) {// default of 64 bytes | |
171 | NoOf8Bytes = n; | |
172 | } | |
173 | task print(integer debug =0) { | |
174 | integer i; | |
175 | if(debug) { | |
176 | printf("Csiu_packet::print: Time = %d Header = %x id = %d \n",{get_time(HI), get_time(LO)},header,id); | |
177 | if(isReadResp() | isNPWrite()) { | |
178 | printf("Csiu_packet::print: ID - %x Address - %x \n",getTransID(),getReqAddress()); | |
179 | for(i =0;i< NoOf8Bytes;i++) { | |
180 | printf("Csiu_packet::print: Data[%d] = %x \n",i,data[i]); | |
181 | } | |
182 | } | |
183 | } | |
184 | } | |
185 | ||
186 | function integer isReadResp(); | |
187 | function integer isWriteAck(); | |
188 | function integer isReadReq(); | |
189 | function integer isNPWrite(); | |
190 | function bit[15:0] getTransID(); | |
191 | function bit[2:0] isPacketError(); | |
192 | function bit [39:0] getReqAddress(); | |
193 | task calcDataParity( bit[127:0] data, var bit[7:0] parity ) ; | |
194 | task calcParity() ; | |
195 | function bit[127:0] swap(bit [127:0] d); | |
196 | function bit [5:0] calc_CtagEcc ( bit [15:0] tag); | |
197 | ||
198 | } | |
199 | function bit[127:0] Csiu_packet:: swap ( bit [127:0] d) { | |
200 | ||
201 | integer i; | |
202 | ||
203 | swap [127:120] = d[7:0]; | |
204 | swap [119:112] = d[15:8]; | |
205 | swap [111:104] = d[23:16]; | |
206 | swap [103:96] = d[31:24]; | |
207 | swap [95:88] = d[39:32]; | |
208 | swap [87:80] = d[47:40]; | |
209 | swap [79:72] = d[55:48]; | |
210 | swap [71:64] = d[63:56]; | |
211 | swap [63:56] = d[71:64]; | |
212 | swap [55:48] = d[79:72]; | |
213 | swap [47:40] = d[87:80]; | |
214 | swap [39:32] = d[95:88]; | |
215 | swap [31:24] = d[103:96]; | |
216 | swap [23:16] = d[111:104]; | |
217 | swap [15:8] = d[119:112]; | |
218 | swap [7:0] = d[127:120]; | |
219 | ||
220 | } | |
221 | function bit[2:0] Csiu_packet::isPacketError() { | |
222 | isPacketError = {TimeOutError,UnmappedAddressError,UncorrectableError}; | |
223 | } | |
224 | function integer Csiu_packet::isReadResp() { | |
225 | isReadResp = (command === 6'h2a); | |
226 | } | |
227 | function integer Csiu_packet::isWriteAck() { | |
228 | isWriteAck = command[5] & ~command[3]; | |
229 | } | |
230 | function integer Csiu_packet::isReadReq() { | |
231 | isReadReq = (command === 6'ha); | |
232 | } | |
233 | function integer Csiu_packet::isNPWrite() { | |
234 | isNPWrite = (command === 6'h2); | |
235 | } | |
236 | function bit[15:0] Csiu_packet::getTransID() { | |
237 | getTransID = id; | |
238 | } | |
239 | function bit [39:0] Csiu_packet::getReqAddress() { | |
240 | getReqAddress = PA; | |
241 | } | |
242 | task Csiu_packet::calcDataParity( bit[127:0] data, var bit [7:0] parity ) { | |
243 | bit tmp; | |
244 | integer i,j; | |
245 | integer start; | |
246 | ||
247 | start = 0; | |
248 | parity = 0; | |
249 | for(i=0;i<7;i= i + 1 ){ | |
250 | parity[i] = 0; | |
251 | for(j=0;j<32;j= j + 2 ) { | |
252 | tmp = parity[i] ^data[start+j]; | |
253 | // printf("parity bit - %d calculated with %d\n",i,start+j); | |
254 | parity[i] = tmp; | |
255 | // printf(" calcDataParity - i- %d parity - %x data - %x \n",i,parity, data); | |
256 | } | |
257 | i++; | |
258 | start++; | |
259 | parity[i] = 0; | |
260 | for(j=0;j<32;j= j + 2 ) { | |
261 | tmp = parity[i] ^data[start+j]; | |
262 | parity[i] = tmp; | |
263 | // printf("parity bit - %d calculated with %d\n",i,start+j); | |
264 | // printf(" calcDataParity - i- %d parity - %x data - %x \n",i,parity, data); | |
265 | } | |
266 | start = start + 31; | |
267 | } | |
268 | } | |
269 | ||
270 | task Csiu_packet::calcParity() { | |
271 | integer i; | |
272 | bit[127:0] datai,swap_data; | |
273 | bit[7:0] parity; | |
274 | ||
275 | for(i =0;i<4;i++) { | |
276 | datai = { data[2*i +1],data[2*i]}; | |
277 | swap_data = swap(datai); | |
278 | calcDataParity(swap_data,parity); | |
279 | data_parity[i] = ~parity; | |
280 | } | |
281 | ||
282 | } | |
283 | function bit [5:0] Csiu_packet::calc_CtagEcc ( bit [15:0] tag) { | |
284 | bit [5:0] p; | |
285 | bit [15:0] d; | |
286 | d = tag; | |
287 | p[0] = d[0] ^ d[1]^ d[3]^ d[4]^ d[6]^ d[8]^ d[10]^ d[11]^ d[13]^ d[15]; | |
288 | p[1] = d[0] ^ d[2]^ d[3]^ d[5]^ d[6]^ d[9]^ d[10]^ d[12]^ d[13]; | |
289 | p[2] = d[1] ^ d[2]^ d[3]^ d[7]^ d[8]^ d[9]^ d[10]^ d[14]^ d[15]; | |
290 | p[3] = d[4] ^ d[5]^ d[6]^ d[7]^ d[8]^ d[9]^ d[10]; | |
291 | p[4] = d[11] ^ d[12]^ d[13]^ d[14]^ d[15]; | |
292 | p[5] = d[0] ^ d[1] ^ d[2] ^ d[3] ^ p[0] ^ p[1] ^p[2]; | |
293 | ||
294 | calc_CtagEcc = p; | |
295 | ||
296 | printf("Csiu_packet::calc_CtagEcc id - %x Ecc - %x\n",tag,p); | |
297 | } | |
298 |