xref: /freebsd/sys/dev/isci/scil/scif_task_request.h (revision 734e82fe33aa764367791a7d603b383996c6b40b)
1 /*-
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9  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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53  */
54 #ifndef _SCIF_TASK_REQUEST_H_
55 #define _SCIF_TASK_REQUEST_H_
56 
57 /**
58  * @file
59  *
60  * @brief This file contains the structures and interface methods that
61  *        can be referenced and used by the SCI user for the SCI task
62  *        management request object.
63  */
64 
65 #ifdef __cplusplus
66 extern "C" {
67 #endif // __cplusplus
68 
69 #include <dev/isci/scil/sci_types.h>
70 #include <dev/isci/scil/sci_status.h>
71 
72 
73 /**
74  * @brief This method simply returns the size required to construct an SCI
75  *        based task request object (includes core & framework object size).
76  *
77  * @return Retrun the size of the SCI task request object.
78  */
79 U32 scif_task_request_get_object_size(
80    void
81 );
82 
83 /**
84  * @brief This method is called by the SCIF user to construct a task
85  *        management request.  This method will construct a SCIC task request
86  *        internally.
87  *
88  * @note  The SCI framework implementation will create an association between
89  *        the user task request object and the framework task request object.
90  *
91  * @param[in]  scif_controller the handle to the framework controller object
92  *             for which to build an IO request.
93  * @param[in]  scif_remote_device This parameter specifies the framework
94  *             remote device with which this task request is to be associated.
95  * @param[in]  io_tag This parameter specifies the IO tag to be associated
96  *             with this request.  If SCI_CONTROLLER_INVALID_IO_TAG is
97  *             passed, then a copy of the request is built internally.  The
98  *             request will be copied into the actual controller request
99  *             memory when the IO tag is allocated internally during the
100  *             scif_controller_start_task() method.
101  * @param[in]  user_task_request_object This parameter specifies the user
102  *             task request to be utilized during task construction.  This task
103  *             pointer will become the associated object for the framework
104  *             task request object.
105  * @param[in]  task_request_memory This parameter specifies the memory
106  *             to be utilized in the construction of the framework task request.
107  * @param[in]  scif_task_request This parameter specifies the handle to be
108  *             utilized for all further interactions with this task request
109  *             object.
110  *
111  * @return Indicate if the controller successfully built the task request.
112  * @retval SCI_SUCCESS This value is returned if the task request was
113  *         successfully built.
114  */
115 SCI_STATUS scif_task_request_construct(
116    SCI_CONTROLLER_HANDLE_T      scif_controller,
117    SCI_REMOTE_DEVICE_HANDLE_T   scif_remote_device,
118    U16                          io_tag,
119    void                       * user_task_request_object,
120    void                       * task_request_memory,
121    SCI_TASK_REQUEST_HANDLE_T  * scif_task_request
122 );
123 
124 #ifdef __cplusplus
125 }
126 #endif // __cplusplus
127 
128 #endif // _SCIF_TASK_REQUEST_H_
129 
130