xref: /freebsd/sys/dev/isci/scil/sci_base_object.h (revision cc16dea626cf2fc80cde667ac4798065108e596c)
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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