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
|
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* System hooks for Chrome EC */
#include "hooks.h"
#include "link_defs.h"
#include "util.h"
struct hook_ptrs {
const struct hook_data *start;
const struct hook_data *end;
};
/* Hook data start and end pointers for each type of hook. Must be in same
* order as enum hook_type. */
static const struct hook_ptrs hook_list[] = {
{__hooks_init, __hooks_init_end},
{__hooks_freq_change, __hooks_freq_change_end},
{__hooks_sysjump, __hooks_sysjump_end},
};
int hook_notify(enum hook_type type, int stop_on_error)
{
const struct hook_data *start, *end, *p;
int count, called = 0;
int last_prio = HOOK_PRIO_FIRST - 1, prio;
int rv_error = EC_SUCCESS, rv;
start = hook_list[type].start;
end = hook_list[type].end;
count = ((uint32_t)end - (uint32_t)start) / sizeof(struct hook_data);
/* Call all the hooks in priority order */
while (called < count) {
/* Find the lowest remaining priority */
for (p = start, prio = HOOK_PRIO_LAST + 1; p < end; p++) {
if (p->priority < prio && p->priority > last_prio)
prio = p->priority;
}
last_prio = prio;
/* Call all the hooks with that priority */
for (p = start; p < end; p++) {
if (p->priority == prio) {
called++;
rv = p->routine();
if (rv != EC_SUCCESS) {
if (stop_on_error)
return rv;
else if (rv_error == EC_SUCCESS)
rv_error = rv;
}
}
}
}
/* Return the first error seen, if any */
return rv_error;
}
|
