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
|
/*
* nextpnr -- Next Generation Place and Route
*
* 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.
*
*/
#ifndef PLACE_COMMON_H
#define PLACE_COMMON_H
#include "nextpnr.h"
NEXTPNR_NAMESPACE_BEGIN
typedef int64_t wirelen_t;
enum class MetricType
{
COST,
WIRELENGTH
};
// Return the wirelength of a net
wirelen_t get_net_metric(const Context *ctx, const NetInfo *net, MetricType type, float &tns);
// Return the wirelength of all nets connected to a cell
wirelen_t get_cell_metric(const Context *ctx, const CellInfo *cell, MetricType type);
// Return the wirelength of all nets connected to a cell, when the cell is at a given bel
wirelen_t get_cell_metric_at_bel(const Context *ctx, CellInfo *cell, BelId bel, MetricType type);
// Place a single cell in the lowest wirelength Bel available, optionally requiring validity check
bool place_single_cell(Context *ctx, CellInfo *cell, bool require_legality);
// Modify a design s.t. all relative placement constraints are satisfied
bool legalise_relative_constraints(Context *ctx);
// Get the total distance from satisfied constraints for a cell
int get_constraints_distance(const Context *ctx, const CellInfo *cell);
// Check that a Bel is within the region for a cell
bool check_cell_bel_region(const CellInfo *cell, BelId bel);
NEXTPNR_NAMESPACE_END
#endif
|
