xref: /freebsd/sys/dev/isci/scil/sci_base_object.h (revision 81ad6265)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
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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.
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7  * GPL LICENSE SUMMARY
8  *
9  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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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
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17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18  * General Public License for more details.
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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.
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54  * $FreeBSD$
55  */
56 #ifndef _SCI_BASE_OBJECT_H_
57 #define _SCI_BASE_OBJECT_H_
58 
59 /**
60  * @file
61  *
62  * @brief This file contains all of the method and constants associated with
63  *        the SCI base object.  The SCI base object is the class from which
64  *        all other objects derive in the Storage Controller Interface.
65  */
66 
67 #ifdef __cplusplus
68 extern "C" {
69 #endif // __cplusplus
70 
71 #include <dev/isci/scil/sci_object.h>
72 
73 // Forward declare the logger object
74 struct SCI_BASE_LOGGER;
75 
76 /**
77  * @struct SCI_BASE_OBJECT
78  *
79  * @brief The SCI_BASE_OBJECT object represents the data and functionality
80  *        that is common to all SCI objects.  It is the base class.
81  */
82 typedef struct SCI_BASE_OBJECT
83 {
84    /**
85     * This field represents an association created by the user for this
86     * object.  The association can be whatever the user wishes.  Think of
87     * it as a cookie.
88     */
89    void * associated_object;
90 
91    /**
92     * This field simply contains a handle to the logger object to be
93     * utilized when utilizing the logger interface.
94     */
95    struct SCI_BASE_LOGGER * logger;
96 
97 } SCI_BASE_OBJECT_T;
98 
99 
100 /**
101  * @brief This method constructs the sci base object.
102  *
103  * @param[in]  base_object This parameter specifies the SCI base
104  *              object which we whish to construct.
105  * @param[in]  logger This parameter specifies the logger object to be
106  *             saved and utilized for this base object.
107  *
108  * @return none
109  */
110 void sci_base_object_construct(
111    SCI_BASE_OBJECT_T      * base_object,
112    struct SCI_BASE_LOGGER * logger
113 );
114 
115 #if defined(SCI_LOGGING)
116 /**
117  * @brief This method returns the logger to which a previous
118  *         association was created.
119  *
120  * @param[in]  base_object This parameter specifies the SCI base object for
121  *             which to retrieve the logger.
122  *
123  * @return This method returns a pointer to the logger that was
124  *          previously associated to the supplied base_object
125  *          parameter.
126  * @retval NULL This value is returned when there is no logger
127  *         association for the supplied base_object instance.
128  */
129 #define sci_base_object_get_logger(this_object) \
130    (((SCI_BASE_OBJECT_T *)(this_object))->logger)
131 
132 #else // defined(SCI_LOGGING)
133 
134 #define sci_base_object_get_logger(this_object) NULL
135 
136 #endif // defined(SCI_LOGGING)
137 
138 #ifdef __cplusplus
139 }
140 #endif // __cplusplus
141 
142 
143 #endif // _SCI_BASE_OBJECT_H_
144 
145