xref: /freebsd/sys/dev/isci/scil/scif_task_request.h (revision e796cc77c586c2955b2f3940dbf4991b31e8d289)
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56 #ifndef _SCIF_TASK_REQUEST_H_
57 #define _SCIF_TASK_REQUEST_H_
58 
59 /**
60  * @file
61  *
62  * @brief This file contains the structures and interface methods that
63  *        can be referenced and used by the SCI user for the SCI task
64  *        management request object.
65  */
66 
67 #ifdef __cplusplus
68 extern "C" {
69 #endif // __cplusplus
70 
71 #include <dev/isci/scil/sci_types.h>
72 #include <dev/isci/scil/sci_status.h>
73 
74 
75 /**
76  * @brief This method simply returns the size required to construct an SCI
77  *        based task request object (includes core & framework object size).
78  *
79  * @return Retrun the size of the SCI task request object.
80  */
81 U32 scif_task_request_get_object_size(
82    void
83 );
84 
85 /**
86  * @brief This method is called by the SCIF user to construct a task
87  *        management request.  This method will construct a SCIC task request
88  *        internally.
89  *
90  * @note  The SCI framework implementation will create an association between
91  *        the user task request object and the framework task request object.
92  *
93  * @param[in]  scif_controller the handle to the framework controller object
94  *             for which to build an IO request.
95  * @param[in]  scif_remote_device This parameter specifies the framework
96  *             remote device with which this task request is to be associated.
97  * @param[in]  io_tag This parameter specifies the IO tag to be associated
98  *             with this request.  If SCI_CONTROLLER_INVALID_IO_TAG is
99  *             passed, then a copy of the request is built internally.  The
100  *             request will be copied into the actual controller request
101  *             memory when the IO tag is allocated internally during the
102  *             scif_controller_start_task() method.
103  * @param[in]  user_task_request_object This parameter specifies the user
104  *             task request to be utilized during task construction.  This task
105  *             pointer will become the associated object for the framework
106  *             task request object.
107  * @param[in]  task_request_memory This parameter specifies the memory
108  *             to be utilized in the construction of the framework task request.
109  * @param[in]  scif_task_request This parameter specifies the handle to be
110  *             utilized for all further interactions with this task request
111  *             object.
112  *
113  * @return Indicate if the controller successfully built the task request.
114  * @retval SCI_SUCCESS This value is returned if the task request was
115  *         successfully built.
116  */
117 SCI_STATUS scif_task_request_construct(
118    SCI_CONTROLLER_HANDLE_T      scif_controller,
119    SCI_REMOTE_DEVICE_HANDLE_T   scif_remote_device,
120    U16                          io_tag,
121    void                       * user_task_request_object,
122    void                       * task_request_memory,
123    SCI_TASK_REQUEST_HANDLE_T  * scif_task_request
124 );
125 
126 #ifdef __cplusplus
127 }
128 #endif // __cplusplus
129 
130 #endif // _SCIF_TASK_REQUEST_H_
131 
132