1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*****************************************************************************
* McPAT/CACTI
* SOFTWARE LICENSE AGREEMENT
* Copyright 2012 Hewlett-Packard Development Company, L.P.
* Copyright (c) 2010-2013 Advanced Micro Devices, Inc.
* All Rights Reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
***************************************************************************/
#include "arbiter.h"
Arbiter::Arbiter(
double n_req,
double flit_size_,
double output_len,
TechnologyParameter::DeviceType *dt
): R(n_req), flit_size(flit_size_),
o_len (output_len), deviceType(dt) {
min_w_pmos = deviceType->n_to_p_eff_curr_drv_ratio * g_tp.min_w_nmos_;
Vdd = dt->Vdd;
double technology = g_ip->F_sz_um;
NTn1 = 13.5 * technology / 2;
PTn1 = 76 * technology / 2;
NTn2 = 13.5 * technology / 2;
PTn2 = 76 * technology / 2;
NTi = 12.5 * technology / 2;
PTi = 25 * technology / 2;
NTtr = 10 * technology / 2; /*Transmission gate's nmos tr. length*/
PTtr = 20 * technology / 2; /* pmos tr. length*/
}
Arbiter::~Arbiter() {}
double
Arbiter::arb_req() {
double temp = ((R - 1) * (2 * gate_C(NTn1, 0) + gate_C(PTn1, 0)) + 2 *
gate_C(NTn2, 0) +
gate_C(PTn2, 0) + gate_C(NTi, 0) + gate_C(PTi, 0) +
drain_C_(NTi, 0, 1, 1, g_tp.cell_h_def) +
drain_C_(PTi, 1, 1, 1, g_tp.cell_h_def));
return temp;
}
double
Arbiter::arb_pri() {
/* switching capacitance of flip-flop is ignored */
double temp = 2 * (2 * gate_C(NTn1, 0) + gate_C(PTn1, 0));
return temp;
}
double
Arbiter::arb_grant() {
double temp = drain_C_(NTn1, 0, 1, 1, g_tp.cell_h_def) * 2 +
drain_C_(PTn1, 1, 1, 1, g_tp.cell_h_def) + crossbar_ctrline();
return temp;
}
double
Arbiter::arb_int() {
double temp = (drain_C_(NTn1, 0, 1, 1, g_tp.cell_h_def) * 2 +
drain_C_(PTn1, 1, 1, 1, g_tp.cell_h_def) +
2 * gate_C(NTn2, 0) + gate_C(PTn2, 0));
return temp;
}
void
Arbiter::compute_power() {
power.readOp.dynamic = (R * arb_req() * Vdd * Vdd / 2 + R * arb_pri() *
Vdd * Vdd / 2 +
arb_grant() * Vdd * Vdd + arb_int() * 0.5 * Vdd *
Vdd);
double nor1_leak = cmos_Isub_leakage(g_tp.min_w_nmos_ * NTn1 * 2,
min_w_pmos * PTn1 * 2, 2, nor);
double nor2_leak = cmos_Isub_leakage(g_tp.min_w_nmos_ * NTn2 * R,
min_w_pmos * PTn2 * R, 2, nor);
double not_leak = cmos_Isub_leakage(g_tp.min_w_nmos_ * NTi,
min_w_pmos * PTi, 1, inv);
double nor1_leak_gate = cmos_Ig_leakage(g_tp.min_w_nmos_ * NTn1 * 2,
min_w_pmos * PTn1 * 2, 2, nor);
double nor2_leak_gate = cmos_Ig_leakage(g_tp.min_w_nmos_ * NTn2 * R,
min_w_pmos * PTn2 * R, 2, nor);
double not_leak_gate = cmos_Ig_leakage(g_tp.min_w_nmos_ * NTi,
min_w_pmos * PTi, 1, inv);
//FIXME include priority table leakage
power.readOp.leakage = (nor1_leak + nor2_leak + not_leak) * Vdd;
power.readOp.gate_leakage = nor1_leak_gate * Vdd + nor2_leak_gate * Vdd +
not_leak_gate * Vdd;
}
double //wire cap with triple spacing
Arbiter::Cw3(double length) {
Wire wc(g_ip->wt, length, 1, 3, 3);
double temp = (wc.wire_cap(length, true));
return temp;
}
double
Arbiter::crossbar_ctrline() {
double temp = (Cw3(o_len * 1e-6 /* m */) +
drain_C_(NTi, 0, 1, 1, g_tp.cell_h_def) + drain_C_(PTi, 1, 1, 1, g_tp.cell_h_def) +
gate_C(NTi, 0) + gate_C(PTi, 0));
return temp;
}
double
Arbiter::transmission_buf_ctrcap() {
double temp = gate_C(NTtr, 0) + gate_C(PTtr, 0);
return temp;
}
void Arbiter::print_arbiter() {
cout << "\nArbiter Stats (" << R << " input arbiter" << ")\n\n";
cout << "Flit size : " << flit_size << " bits" << endl;
cout << "Dynamic Power : " << power.readOp.dynamic*1e9 << " (nJ)" << endl;
cout << "Leakage Power : " << power.readOp.leakage*1e3 << " (mW)" << endl;
}
|
