xref: /freebsd/sys/dev/isci/scil/sci_base_object.h (revision 7fdf597e96a02165cfe22ff357b857d5fa15ed8a)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
3  *
4  * This file is provided under a dual BSD/GPLv2 license.  When using or
5  * redistributing this file, you may do so under either license.
6  *
7  * GPL LICENSE SUMMARY
8  *
9  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of version 2 of the GNU General Public License as
13  * published by the Free Software Foundation.
14  *
15  * This program is distributed in the hope that it will be useful, but
16  * WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18  * General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
23  * The full GNU General Public License is included in this distribution
24  * in the file called LICENSE.GPL.
25  *
26  * BSD LICENSE
27  *
28  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
29  * All rights reserved.
30  *
31  * Redistribution and use in source and binary forms, with or without
32  * modification, are permitted provided that the following conditions
33  * are met:
34  *
35  *   * Redistributions of source code must retain the above copyright
36  *     notice, this list of conditions and the following disclaimer.
37  *   * Redistributions in binary form must reproduce the above copyright
38  *     notice, this list of conditions and the following disclaimer in
39  *     the documentation and/or other materials provided with the
40  *     distribution.
41  *
42  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
43  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
44  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
45  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
46  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
47  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
48  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
49  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
50  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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52  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
53  */
54 #ifndef _SCI_BASE_OBJECT_H_
55 #define _SCI_BASE_OBJECT_H_
56 
57 /**
58  * @file
59  *
60  * @brief This file contains all of the method and constants associated with
61  *        the SCI base object.  The SCI base object is the class from which
62  *        all other objects derive in the Storage Controller Interface.
63  */
64 
65 #ifdef __cplusplus
66 extern "C" {
67 #endif // __cplusplus
68 
69 #include <dev/isci/scil/sci_object.h>
70 
71 // Forward declare the logger object
72 struct SCI_BASE_LOGGER;
73 
74 /**
75  * @struct SCI_BASE_OBJECT
76  *
77  * @brief The SCI_BASE_OBJECT object represents the data and functionality
78  *        that is common to all SCI objects.  It is the base class.
79  */
80 typedef struct SCI_BASE_OBJECT
81 {
82    /**
83     * This field represents an association created by the user for this
84     * object.  The association can be whatever the user wishes.  Think of
85     * it as a cookie.
86     */
87    void * associated_object;
88 
89    /**
90     * This field simply contains a handle to the logger object to be
91     * utilized when utilizing the logger interface.
92     */
93    struct SCI_BASE_LOGGER * logger;
94 
95 } SCI_BASE_OBJECT_T;
96 
97 
98 /**
99  * @brief This method constructs the sci base object.
100  *
101  * @param[in]  base_object This parameter specifies the SCI base
102  *              object which we whish to construct.
103  * @param[in]  logger This parameter specifies the logger object to be
104  *             saved and utilized for this base object.
105  *
106  * @return none
107  */
108 void sci_base_object_construct(
109    SCI_BASE_OBJECT_T      * base_object,
110    struct SCI_BASE_LOGGER * logger
111 );
112 
113 #if defined(SCI_LOGGING)
114 /**
115  * @brief This method returns the logger to which a previous
116  *         association was created.
117  *
118  * @param[in]  base_object This parameter specifies the SCI base object for
119  *             which to retrieve the logger.
120  *
121  * @return This method returns a pointer to the logger that was
122  *          previously associated to the supplied base_object
123  *          parameter.
124  * @retval NULL This value is returned when there is no logger
125  *         association for the supplied base_object instance.
126  */
127 #define sci_base_object_get_logger(this_object) \
128    (((SCI_BASE_OBJECT_T *)(this_object))->logger)
129 
130 #else // defined(SCI_LOGGING)
131 
132 #define sci_base_object_get_logger(this_object) NULL
133 
134 #endif // defined(SCI_LOGGING)
135 
136 #ifdef __cplusplus
137 }
138 #endif // __cplusplus
139 
140 
141 #endif // _SCI_BASE_OBJECT_H_
142 
143