2 * Copyright (c) 2007 MIPS Technologies, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Korey Sewell
32 #ifndef __CPU_INORDER_PIPELINE_IMPL_HH__
33 #define __CPU_INORDER_PIPELINE_IMPL_HH__
39 #include "arch/isa_traits.hh"
40 #include "cpu/base.hh"
42 #include "params/InOrderCPU.hh"
48 /* This Namespace contains constants, typedefs, functions and
49 * objects specific to the Pipeline Implementation.
51 namespace ThePipeline {
53 const unsigned NumStages = 5;
54 const ThreadID MaxThreads = 8;
55 const unsigned StageWidth = 1;
56 const unsigned BackEndStartStage = 2;
58 // List of Resources The Pipeline Uses
74 // Expand this as necessary for your inter stage buffer sizes
75 static const unsigned interStageBuffSize[] = {
76 StageWidth, /* Stage 0 - 1 */
77 StageWidth, /* Stage 1 - 2 */
78 StageWidth, /* Stage 2 - 3 */
79 StageWidth, /* Stage 3 - 4 */
80 StageWidth, /* Stage 4 - 5 */
81 StageWidth, /* Stage 5 - 6 */
82 StageWidth, /* Stage 6 - 7 */
83 StageWidth, /* Stage 7 - 8 */
84 StageWidth /* Stage 8 - 9 */
87 typedef InOrderCPUParams Params;
88 typedef RefCountingPtr<InOrderDynInst> DynInstPtr;
90 //////////////////////////
91 // RESOURCE SCHEDULING
92 //////////////////////////
93 typedef ResourceSked ResSchedule;
95 void createFrontEndSchedule(DynInstPtr &inst);
96 bool createBackEndSchedule(DynInstPtr &inst);
97 int getNextPriority(DynInstPtr &inst, int stage_num);
101 int nextTaskPriority;
103 ResSchedule *instSched;
106 InstStage(DynInstPtr inst, int stage_num);
108 void needs(int unit, int request);
109 void needs(int unit, int request, int param);