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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com>
* Copyright (C) 2018 David Shah <david@symbioticeda.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "design_utils.h"
#include <algorithm>
#include <map>
#include "log.h"
#include "util.h"
NEXTPNR_NAMESPACE_BEGIN
void replace_port(CellInfo *old_cell, IdString old_name, CellInfo *rep_cell, IdString rep_name)
{
if (!old_cell->ports.count(old_name))
return;
PortInfo &old = old_cell->ports.at(old_name);
// Create port on the replacement cell if it doesn't already exist
if (!rep_cell->ports.count(rep_name)) {
rep_cell->ports[rep_name].name = rep_name;
rep_cell->ports[rep_name].type = old.type;
}
PortInfo &rep = rep_cell->ports.at(rep_name);
NPNR_ASSERT(old.type == rep.type);
rep.net = old.net;
old.net = nullptr;
if (rep.type == PORT_OUT) {
if (rep.net != nullptr) {
rep.net->driver.cell = rep_cell;
rep.net->driver.port = rep_name;
}
} else if (rep.type == PORT_IN) {
if (rep.net != nullptr) {
for (PortRef &load : rep.net->users) {
if (load.cell == old_cell && load.port == old_name) {
load.cell = rep_cell;
load.port = rep_name;
}
}
}
} else {
NPNR_ASSERT(false);
}
}
// Print utilisation of a design
void print_utilisation(const Context *ctx)
{
// Sort by Bel type
std::map<IdString, int> used_types;
for (auto &cell : ctx->cells) {
used_types[cell.second.get()->type]++;
}
std::map<IdString, int> available_types;
for (auto bel : ctx->getBels()) {
available_types[ctx->getBelType(bel)]++;
}
log_break();
log_info("Device utilisation:\n");
for (auto type : available_types) {
IdString type_id = type.first;
int used_bels = get_or_default(used_types, type.first, 0);
log_info("\t%20s: %5d/%5d %5d%%\n", type_id.c_str(ctx), used_bels, type.second, 100 * used_bels / type.second);
}
log_break();
}
// Connect a net to a port
void connect_port(const Context *ctx, NetInfo *net, CellInfo *cell, IdString port_name)
{
if (net == nullptr)
return;
PortInfo &port = cell->ports.at(port_name);
NPNR_ASSERT(port.net == nullptr);
port.net = net;
if (port.type == PORT_OUT) {
NPNR_ASSERT(net->driver.cell == nullptr);
net->driver.cell = cell;
net->driver.port = port_name;
} else if (port.type == PORT_IN || port.type == PORT_INOUT) {
PortRef user;
user.cell = cell;
user.port = port_name;
net->users.push_back(user);
} else {
NPNR_ASSERT_FALSE("invalid port type for connect_port");
}
}
void disconnect_port(const Context *ctx, CellInfo *cell, IdString port_name)
{
if (!cell->ports.count(port_name))
return;
PortInfo &port = cell->ports.at(port_name);
if (port.net != nullptr) {
port.net->users.erase(std::remove_if(port.net->users.begin(), port.net->users.end(),
[cell, port_name](const PortRef &user) {
return user.cell == cell && user.port == port_name;
}),
port.net->users.end());
if (port.net->driver.cell == cell && port.net->driver.port == port_name)
port.net->driver.cell = nullptr;
port.net = nullptr;
}
}
void connect_ports(Context *ctx, CellInfo *cell1, IdString port1_name, CellInfo *cell2, IdString port2_name)
{
PortInfo &port1 = cell1->ports.at(port1_name);
if (port1.net == nullptr) {
// No net on port1; need to create one
std::unique_ptr<NetInfo> p1net(new NetInfo());
p1net->name = ctx->id(cell1->name.str(ctx) + "$conn$" + port1_name.str(ctx));
connect_port(ctx, p1net.get(), cell1, port1_name);
IdString p1name = p1net->name;
NPNR_ASSERT(!ctx->cells.count(p1name));
ctx->nets[p1name] = std::move(p1net);
}
connect_port(ctx, port1.net, cell2, port2_name);
}
void rename_port(Context *ctx, CellInfo *cell, IdString old_name, IdString new_name)
{
if (!cell->ports.count(old_name))
return;
PortInfo pi = cell->ports.at(old_name);
if (pi.net != nullptr) {
if (pi.net->driver.cell == cell && pi.net->driver.port == old_name)
pi.net->driver.port = new_name;
for (auto &usr : pi.net->users)
if (usr.cell == cell && usr.port == old_name)
usr.port = new_name;
}
cell->ports.erase(old_name);
pi.name = new_name;
cell->ports[new_name] = pi;
}
void rename_net(Context *ctx, NetInfo *net, IdString new_name)
{
if (net == nullptr)
return;
NPNR_ASSERT(!ctx->nets.count(new_name));
std::swap(ctx->nets[net->name], ctx->nets[new_name]);
ctx->nets.erase(net->name);
net->name = new_name;
}
NEXTPNR_NAMESPACE_END
|