| 1 | // ========== Copyright Header Begin ========================================== |
| 2 | // |
| 3 | // OpenSPARC T2 Processor File: ilupeuIhbErrPEUStr.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 | class IhbErrPEUStr extends PEUStrBase |
| 36 | { |
| 37 | integer f_errQueue; // A mailbox for bad pkt headers |
| 38 | integer f_len; // The packet's payload length |
| 39 | bit f_lenSpecified; // Was a length specified? |
| 40 | bit[4:0] f_type; // The packet's type |
| 41 | bit f_typeSpecified; // Was a type specified? |
| 42 | bit[3:0] f_mask; // Which bits are in error? |
| 43 | |
| 44 | task new( PEUTestEnv a_env ) |
| 45 | { |
| 46 | super.new( a_env ); |
| 47 | f_errQueue = 0; |
| 48 | f_lenSpecified = 0; |
| 49 | f_typeSpecified = 0; |
| 50 | f_mask = 4'b0; |
| 51 | } |
| 52 | |
| 53 | task SetErrQueue( integer a_queue ) |
| 54 | { |
| 55 | f_errQueue = a_queue; |
| 56 | } /* end SetErrQueue */ |
| 57 | |
| 58 | task SetLength( integer a_len ) |
| 59 | { |
| 60 | f_len = a_len; |
| 61 | f_lenSpecified = 1; |
| 62 | } /* end SetLength */ |
| 63 | |
| 64 | task SetType( integer a_type ) |
| 65 | { |
| 66 | f_type = a_type; |
| 67 | f_typeSpecified = 1; |
| 68 | } /* end SetType */ |
| 69 | |
| 70 | task SetMask( bit[3:0] a_mask ) |
| 71 | { |
| 72 | f_mask = a_mask; |
| 73 | } /* end SetMask */ |
| 74 | |
| 75 | task Execute() |
| 76 | { |
| 77 | bit[PEC_PCI__HDR] egressHdr; // The egress TLP's header |
| 78 | integer egressData; // A payload descriptor |
| 79 | bit[7:0] tlpTag; // The tag for the TLP |
| 80 | bit[7:0] egressAddr; // The DOU starting address |
| 81 | bit[PEC_PCI__HDR] ingressHdr; // The ingress TLP's header |
| 82 | integer ingressData; // A payload descriptor |
| 83 | bit[3:0] errMask; |
| 84 | bit[63:0] address; |
| 85 | |
| 86 | if ( f_mask != 0 ) |
| 87 | errMask = f_mask; |
| 88 | else |
| 89 | errMask = urandom()%15 + 1; |
| 90 | |
| 91 | |
| 92 | // Build a TLP, using the specified |
| 93 | // type and length, if any. |
| 94 | if ( !f_typeSpecified ) |
| 95 | { |
| 96 | randcase |
| 97 | { |
| 98 | 4 : { f_type = PEC_PCI__TYPE_MEM; f_len = urandom()%16 + 1; } |
| 99 | 1 : { f_type = PEC_PCI__TYPE_MSG; f_len = 1; } |
| 100 | 1 : { f_type = PEC_PCI__TYPE_CPL; f_len = urandom()%4 + 1; } |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | else if ( !f_lenSpecified ) |
| 105 | { |
| 106 | if ( f_type == PEC_PCI__TYPE_CPL ) |
| 107 | f_len = urandom()%4 + 1; |
| 108 | else if ( f_type == PEC_PCI__TYPE_MEM ) |
| 109 | f_len = urandom()%16 + 1; |
| 110 | else |
| 111 | f_len = 1; |
| 112 | } |
| 113 | |
| 114 | // If a completion (with data) was |
| 115 | // requested, then base it on a PIO |
| 116 | // read request. |
| 117 | if ( f_type == PEC_PCI__TYPE_CPL ) |
| 118 | { |
| 119 | f_env.allocRdTag( tlpTag ); |
| 120 | f_env.genEgressRdReq( tlpTag, egressHdr, egressData, f_len ); |
| 121 | f_env.driveILU( egressHdr, 0, egressData ); |
| 122 | f_env.expectPCIE( egressHdr, egressData ); |
| 123 | f_env.genIngressCpl( egressHdr, ingressHdr, ingressData ); |
| 124 | } |
| 125 | else |
| 126 | { |
| 127 | f_env.allocDmaTag( tlpTag ); |
| 128 | if ( f_len == 0 ) |
| 129 | f_env.genIngressRdReq( tlpTag, ingressHdr, ingressData ); |
| 130 | else |
| 131 | f_env.genIngressWrReq( tlpTag, ingressHdr, ingressData, f_len ); |
| 132 | } |
| 133 | |
| 134 | // Tweak a couple of parameters for IOS so it looks like a bypass packet |
| 135 | #ifdef N2_IOS |
| 136 | ingressHdr[PEC_PCI__FMT_4DW] = 1; |
| 137 | address = ingressHdr[PEC_PCI__ADDR]; |
| 138 | address[63:39] = 25'h1fff800; |
| 139 | ingressHdr[PEC_PCI__ADDR] = address; |
| 140 | #endif |
| 141 | |
| 142 | // Present the TLP to the TLU, and |
| 143 | // specify that parity errors are to |
| 144 | // be injected into the IHB. |
| 145 | // We aren't going to release the tag |
| 146 | // so that only one error is injected. |
| 147 | f_env.reserveIngressCredits( ingressHdr ); |
| 148 | f_env.injectIHBerror( tlpTag, errMask ); |
| 149 | f_env.drivePCIE( ingressHdr, ingressData ); |
| 150 | f_env.consumeIngressCredits( ingressHdr ); |
| 151 | |
| 152 | // We can't expect the TLP from the ILU |
| 153 | // since it is corrupted. But we do |
| 154 | // expect to enter the "drain state". |
| 155 | f_env.enterDrainState(); |
| 156 | |
| 157 | // We have to wait for a bit before |
| 158 | // we can tell the error-checker |
| 159 | // about the problem. |
| 160 | // f_env.waitIngressLatency( ingressHdr ); |
| 161 | //N2 review while( !IHB.err ) @(posedge IHB.clk); |
| 162 | f_env.wait(100); |
| 163 | |
| 164 | // Free the tag if we sent in a PIO req. |
| 165 | // if ( f_type == PEC_PCI__TYPE_CPL ) |
| 166 | // f_env.freePioTag( tlpTag ); |
| 167 | |
| 168 | // Tell the error-checker about this |
| 169 | // bad-boy. |
| 170 | if ( f_errQueue != 0 ) |
| 171 | { |
| 172 | mailbox_put( f_errQueue, e_ERR_ilu_ihb ); |
| 173 | mailbox_put( f_errQueue, ingressHdr ); |
| 174 | } |
| 175 | |
| 176 | } /* end Execute */ |
| 177 | } /* end IhbErrPEUStr */ |