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
|
/*
* Copyright (c) 2025 Ian Marco Moffett and L5 engineers
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Description: Module interface
* Author: Ian Marco Moffett
*/
#ifndef _OS_MODULE_H_
#define _OS_MODULE_H_ 1
#include <sys/types.h>
/* Early (high priority)modules */
extern char __modules_init_start[];
extern char __modules_init_end[];
/*
* Module type enumeration
*
* @MODTYPE_GENERIC: Generic module/driver
* @MODTYPE_PCI: PCI driver
*/
typedef enum {
MODTYPE_GENERIC,
MODTYPE_PCI,
} modtype_t;
struct module {
const char *name;
modtype_t type;
int(*init)(struct module *modp);
};
/*
* Export a module to be started up upon
* early boot.
*/
#define MODULE_EXPORT(NAME, TYPE, INIT_FN) \
__attribute__((used, section(".modules"))) \
struct module __module_##INIT_FN = { \
.name = (NAME), \
.type = (TYPE), \
.init = (INIT_FN) \
};
/*
* XXX: Guarding this in case ever exported
*/
#if defined(_KERNEL)
/*
* Used internally to initializemodules
*/
#define __MODULES_INIT(TYPE) \
for (struct module *__m = (struct module *)__modules_init_start; \
(uintptr_t)__m < (uintptr_t)__modules_init_end; ++__m) \
{ \
if (__m->type == ((TYPE))) \
__m->init(__m); \
}
#endif /* _KERNEL */
#endif /* !_OS_MODULE_H_ */
|
