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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 | } |