| 1 | // ========== Copyright Header Begin ========================================== |
| 2 | // |
| 3 | // OpenSPARC T2 Processor File: niu_memcbmgr.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 | #include "niu_cb_events.vri" |
| 38 | |
| 39 | /* A generic call back class to be used for Memory */ |
| 40 | #include "niu_cbclass.vrh" |
| 41 | |
| 42 | |
| 43 | class CcbManager { |
| 44 | |
| 45 | integer no_of_cbs; |
| 46 | CcbMem cbMem[]; |
| 47 | string whoami; |
| 48 | task new(string s) { |
| 49 | no_of_cbs = 0; |
| 50 | whoami = s; |
| 51 | } |
| 52 | |
| 53 | task setCallBack ( CcbMem cbMem) ; |
| 54 | function integer checkCallBack ( bit [63:0] attr, (integer req=0) ); |
| 55 | local task docb( CcbMem cb); |
| 56 | } |
| 57 | |
| 58 | task CcbManager::setCallBack ( CcbMem cb) { |
| 59 | bit[95:0] hash_in; |
| 60 | |
| 61 | if(cb.eventdfn == READ_REQUEST) { |
| 62 | hash_in = {READ_REQUEST,cb.attr}; |
| 63 | } else { |
| 64 | hash_in = {cb.attr}; |
| 65 | } |
| 66 | |
| 67 | if ( assoc_index(CHECK,this.cbMem,hash_in)) { |
| 68 | printf("%s: CcbManager::setCallBack: CallBack already set for address - %x Ignoring this request-- \n",whoami,cb.attr); |
| 69 | return; |
| 70 | } else { |
| 71 | cbMem[hash_in] = new cb; |
| 72 | no_of_cbs ++; |
| 73 | printf("%s: CcbManager::setCallBack: MEM CB DEBUG- Callback Set for address - %x , NoofActiveCBS - %d \n",whoami,cb.attr,no_of_cbs); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | function integer CcbManager::checkCallBack ( bit [63:0] attr, (integer req=0) ) { |
| 78 | CcbMem cb; |
| 79 | integer status; |
| 80 | bit[95:0] hash_in; |
| 81 | |
| 82 | |
| 83 | if(req == 1) { |
| 84 | hash_in = {READ_REQUEST,attr}; |
| 85 | } else { |
| 86 | hash_in = {attr}; |
| 87 | } |
| 88 | |
| 89 | |
| 90 | if(assoc_index(CHECK,this.cbMem,hash_in)) { |
| 91 | printf("%s: Found the entry in the cb mem- \n",whoami); |
| 92 | // do the appropriate action and return the status |
| 93 | checkCallBack = 1; |
| 94 | cb = new this.cbMem[hash_in]; |
| 95 | if(req==0) { |
| 96 | status = assoc_index(DELETE,this.cbMem,hash_in); |
| 97 | } |
| 98 | docb(cb); |
| 99 | } |
| 100 | else checkCallBack = 0; |
| 101 | |
| 102 | } |
| 103 | |
| 104 | task CcbManager::docb( CcbMem cb) { |
| 105 | |
| 106 | // Parse the events and do appropriate- |
| 107 | // cb.eventdfn == |
| 108 | |
| 109 | if(cb.eventdfn == -1) { |
| 110 | printf("%s: CcbManager::docb: ERROR Illegal CallBack event set!! FIX IT \n",whoami); |
| 111 | return; |
| 112 | } |
| 113 | |
| 114 | if(cb.semId!=-1) { |
| 115 | semaphore_put(cb.semId,1); |
| 116 | no_of_cbs --; |
| 117 | if(cb.eventdfn == GOOD_PACKET) { |
| 118 | printf("%s: CcbManager::docb: MEM CB DEBUG- CallBack Success - Address - %x \n",whoami,cb.attr); |
| 119 | } else if(cb.eventdfn == DROP_PACKET) { |
| 120 | printf("%s: CcbManager::docb: ERROR- CallBack Success - Packet Written to address - %x : Packet expected to be dropped \n",whoami,cb.attr); |
| 121 | |
| 122 | } else if( cb.eventdfn == CR_WAIT_FOR_ACK) { |
| 123 | printf("%s: CcbManager::docb: - CallBack Success - Sending Write Ack for address - %x : \n",whoami,cb.attr); |
| 124 | } else if( cb.eventdfn == READ_REQUEST) { |
| 125 | printf("%s: CcbManager::docb: - CallBack Success - Read Request for address - %x : \n",whoami,cb.attr); |
| 126 | } |
| 127 | |
| 128 | } |
| 129 | } |