1 /*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
13 * disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29 #ifndef _LINUXKPI_LINUX_MODULE_H_
30 #define _LINUXKPI_LINUX_MODULE_H_
31
32 #include <sys/cdefs.h>
33 #include <sys/kernel.h>
34 #include <sys/types.h>
35
36 #include <linux/list.h>
37 #include <linux/compiler.h>
38 #include <linux/moduleparam.h>
39 #include "linux/kernel.h"
40
41 #define MODULE_AUTHOR(name)
42 #define MODULE_DESCRIPTION(name)
43 #define MODULE_INFO(tag, info)
44 #define MODULE_FIRMWARE(firmware)
45 #define MODULE_VERSION(version)
46 #define MODULE_SUPPORTED_DEVICE(name)
47 #define MODULE_IMPORT_NS(_name)
48
49 struct module {
50 };
51
52 #define THIS_MODULE ((struct module *)0)
53
54 #define __MODULE_STRING(x) __stringify(x)
55
56 /* OFED pre-module initialization */
57 #define SI_SUB_OFED_PREINIT (SI_SUB_ROOT_CONF - 2)
58 /* OFED default module initialization */
59 #define SI_SUB_OFED_MODINIT (SI_SUB_ROOT_CONF - 1)
60 #define SI_SUB_POST_CORE_INIT (SI_SUB_DRIVERS + 1)
61 #define SI_SUB_ARCH_INIT (SI_SUB_DRIVERS + 2)
62 #define SI_SUB_SUBSYS_INIT (SI_SUB_DRIVERS + 3)
63
64 static inline void
_module_run(void * arg)65 _module_run(void *arg)
66 {
67 int (*fn)(void);
68 fn = arg;
69 if (fn == NULL) {
70 PRINTK("_module_run null ptr! \n");
71 return;
72 }
73 int ret = fn();
74 if (ret) {
75 PRINTK("_module_run function callback ret:%d! \n", ret);
76 }
77 }
78
79 #define module_init(fn) \
80 SYSINIT(fn, SI_SUB_OFED_MODINIT, SI_ORDER_FIRST, _module_run, (fn))
81
82 #define module_exit(fn) \
83 SYSUNINIT(fn, SI_SUB_OFED_MODINIT, SI_ORDER_SECOND, _module_run, (fn))
84
85 /*
86 * The following two macros are a workaround for not having a module
87 * load and unload order resolver:
88 */
89 #define module_init_order(fn, order) \
90 SYSINIT(fn, SI_SUB_OFED_MODINIT, (order), _module_run, (fn))
91
92 #define module_exit_order(fn, order) \
93 SYSUNINIT(fn, SI_SUB_OFED_MODINIT, (order), _module_run, (fn))
94
95 #define module_get(module)
96 #define module_put(module)
97 #define try_module_get(module) 1
98
99 /*
100 * The sysinit table itself. Items are checked off as the are run.
101 * If we want to register new sysinit types, add them to newsysinit.
102 */
103 SET_DECLARE(sysinit_set, struct sysinit);
104 #define postcore_initcall(fn) SYSINIT(fn, SI_SUB_POST_CORE_INIT, SI_ORDER_FIRST, _module_run, (fn))
105 #define arch_initcall(fn) SYSINIT(fn, SI_SUB_ARCH_INIT, SI_ORDER_FIRST, _module_run, (fn))
106 #define subsys_initcall(fn) SYSINIT(fn, SI_SUB_SUBSYS_INIT, SI_ORDER_FIRST, _module_run, (fn))
107
mi_startup(enum sysinit_sub_id sub_id)108 static inline void mi_startup(enum sysinit_sub_id sub_id)
109 {
110 struct sysinit **sipp = NULL; /* system initialization*/
111 struct sysinit **xipp = NULL; /* interior loop of sort*/
112 struct sysinit *save = NULL; /* bubble*/
113 struct sysinit **sysinit = SET_BEGIN(sysinit_set);
114 struct sysinit **sysinit_end = SET_LIMIT(sysinit_set);
115
116 /*
117 * Perform a bubble sort of the system initialization objects by
118 * their subsystem (primary key) and order (secondary key).
119 */
120 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
121 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) {
122 if ((*sipp)->subsystem < (*xipp)->subsystem ||
123 ((*sipp)->subsystem == (*xipp)->subsystem &&
124 (*sipp)->order <= (*xipp)->order))
125 continue; /* skip*/
126 save = *sipp;
127 *sipp = *xipp;
128 *xipp = save;
129 }
130 }
131
132 /*
133 * Traverse the (now) ordered list of system initialization tasks.
134 * Perform each task, and continue on to the next task.
135 */
136 for (sipp = sysinit; sipp < sysinit_end; sipp++) {
137 if ((*sipp)->subsystem > sub_id) {
138 break;
139 }
140 /* Call function */
141 (*((*sipp)->func))((*sipp)->udata);
142 }
143 }
144
145 #endif /* _LINUXKPI_LINUX_MODULE_H_ */
146