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Source at commit 228f7b47f7d97c7aa4ce8b072f3575226ec294ce created 8 years 7 days ago. By Werner Almesberger, Makefile (man): generate and display the man page | |
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1 | /* |
2 | * hole.c - Classify holes and connect them with pads |
3 | * |
4 | * Written 2010, 2012 by Werner Almesberger |
5 | * Copyright 2010, 2012 by Werner Almesberger |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | * (at your option) any later version. |
11 | */ |
12 | |
13 | |
14 | #include "error.h" |
15 | #include "inst.h" |
16 | #include "overlap.h" |
17 | #include "hole.h" |
18 | |
19 | |
20 | static int check_through_hole(struct inst *pad, struct inst *hole) |
21 | { |
22 | if (!overlap(pad, hole, ao_none)) |
23 | return 1; |
24 | if (!inside(hole, pad)) { |
25 | fail("hole (line %d) not completely inside " |
26 | "pad \"%s\" (line %d)", hole->obj->lineno, |
27 | pad->u.pad.name, pad->obj->lineno); |
28 | instantiation_error = pad->obj; |
29 | return 0; |
30 | } |
31 | if (hole->u.hole.pad) { |
32 | /* |
33 | * A hole can only be on several pads if the pads themselves |
34 | * overlap. We'll catch this error in refine_copper. |
35 | */ |
36 | return 1; |
37 | } |
38 | if (pad->u.pad.hole) { |
39 | fail("pad \"%s\" (line %d) has multiple holes (lines %d, %d)", |
40 | pad->u.pad.name, pad->obj->lineno, |
41 | hole->obj->lineno, pad->u.pad.hole->obj->lineno); |
42 | instantiation_error = pad->obj; |
43 | return 0; |
44 | } |
45 | pad->u.pad.hole = hole; |
46 | hole->u.hole.pad = pad; |
47 | return 1; |
48 | } |
49 | |
50 | |
51 | static int connect_holes(const struct pkg *pkg) |
52 | { |
53 | struct inst *pad, *hole; |
54 | |
55 | for (pad = pkg->insts[ip_pad_copper]; pad; pad = pad->next) |
56 | for (hole = pkg->insts[ip_hole]; hole; hole = hole->next) |
57 | if (!check_through_hole(pad, hole)) |
58 | return 0; |
59 | return 1; |
60 | } |
61 | |
62 | |
63 | static void clear_links(const struct pkg *pkg) |
64 | { |
65 | struct inst *pad, *hole; |
66 | |
67 | for (pad = pkg->insts[ip_pad_copper]; pad; pad = pad->next) |
68 | pad->u.pad.hole = NULL; |
69 | for (pad = pkg->insts[ip_pad_special]; pad; pad = pad->next) |
70 | pad->u.pad.hole = NULL; |
71 | for (hole = pkg->insts[ip_hole]; hole; hole = hole->next) |
72 | hole->u.hole.pad = NULL; |
73 | } |
74 | |
75 | |
76 | int link_holes(int linked) |
77 | { |
78 | const struct pkg *pkg; |
79 | |
80 | for (pkg = pkgs; pkg; pkg = pkg->next) { |
81 | clear_links(pkg); |
82 | if (linked) |
83 | if (!connect_holes(pkg)) |
84 | return 0; |
85 | } |
86 | return 1; |
87 | } |
88 |
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