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
|
#include <gran/if/alloc.h>
#include "testbench.h"
struct reg {
struct packet pkt;
bool busy;
};
struct tb {
struct component component;
struct component *dut;
struct reg in;
enum {
ADD_REGION,
QUERY_EXISTING,
REMOVE_REGION,
QUERY_NONEXISTING,
FINAL
} state;
};
static stat tb_receive(struct tb *tb, struct component *from, struct packet pkt)
{
assert(tb->dut == from);
tb->in.pkt = pkt;
tb->in.busy = true;
return OK;
}
static stat tb_clock(struct tb *tb)
{
assert(tb->dut);
switch (tb->state) {
case ADD_REGION: {
struct alloc_if_new n = {.space = 0, .start = 0, .end = 10};
struct packet pkt = create_packet(0, ALLOC_IF_NEW, sizeof(n), &n, PACKET_WRITE);
assert(SEND(tb, tb->dut, pkt) == OK);
tb->state = QUERY_EXISTING;
break;
}
case QUERY_EXISTING: {
if (!tb->in.busy)
break;
struct alloc_if_r *r = (struct alloc_if_r *)&tb->in.pkt.data;
assert(r->r == ALLOC_IF_OK);
struct alloc_if_q q = {.space = 0, .addr = 5};
struct packet pkt = create_packet(0, ALLOC_IF_Q, sizeof(q), &q, PACKET_WRITE);
assert(SEND(tb, tb->dut, pkt) == OK);
tb->state = REMOVE_REGION;
tb->in.busy = false;
break;
}
case REMOVE_REGION: {
if (!tb->in.busy)
break;
struct alloc_if_r *r = (struct alloc_if_r *)&tb->in.pkt.data;
assert(r->r == ALLOC_IF_OK);
assert(r->start == 0);
assert(r->end == 10);
struct alloc_if_rm rm = {.space = 0, .start = 0, .end = 10};
struct packet pkt = create_packet(0, ALLOC_IF_RM, sizeof(rm), &rm, PACKET_WRITE);
assert(SEND(tb, tb->dut, pkt) == OK);
tb->state = QUERY_NONEXISTING;
tb->in.busy = false;
break;
}
case QUERY_NONEXISTING: {
if (!tb->in.busy)
break;
struct alloc_if_r *r = (struct alloc_if_r *)&tb->in.pkt.data;
assert(r->r == ALLOC_IF_OK);
struct alloc_if_q q = {.space = 0, .addr = 5};
struct packet pkt = create_packet(0, ALLOC_IF_Q, sizeof(q), &q, PACKET_WRITE);
assert(SEND(tb, tb->dut, pkt) == OK);
tb->state = FINAL;
tb->in.busy = false;
break;
}
case FINAL: {
if (!tb->in.busy)
break;
struct alloc_if_r *r = (struct alloc_if_r *)&tb->in.pkt.data;
assert(r->r != ALLOC_IF_OK);
return DONE;
}
default: abort();
}
return OK;
}
struct component *create_testbench()
{
struct tb *tb = calloc(1, sizeof(struct tb));
tb->component.clock = (clock_callback)tb_clock;
tb->component.receive = (receive_callback)tb_receive;
return (struct component *)tb;
}
stat testbench_connect(struct component *tb, struct component *dut)
{
struct tb *t = (struct tb *)tb;
t->dut = dut;
return OK;
}
|
