xref: /freebsd/sys/dev/isci/scil/scic_sds_stp_pio_request.h (revision 39ee7a7a6bdd1557b1c3532abf60d139798ac88b)
1 /*-
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7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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54 #ifndef _SCIC_SDS_SATA_PIO_REQUEST_H_
55 #define _SCIC_SDS_SATA_PIO_REQUEST_H_
56 
57 #ifdef __cplusplus
58 extern "C" {
59 #endif // __cplusplus
60 
61 #include <dev/isci/scil/sci_base_state.h>
62 #include <dev/isci/scil/scic_sds_request.h>
63 #include <dev/isci/scil/scu_task_context.h>
64 
65 /**
66  * @file
67  *
68  * @brief This file contains the structures and constants for SATA PIO
69  *        requests.
70  */
71 
72 
73 /**
74  * @enum
75  *
76  * This is the enumeration of the SATA PIO DATA IN started substate machine.
77  */
78 enum _SCIC_SDS_STP_REQUEST_STARTED_PIO_SUBSTATES
79 {
80    /**
81     * While in this state the IO request object is waiting for the TC completion
82     * notification for the H2D Register FIS
83     */
84    SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
85 
86    /**
87     * While in this state the IO request object is waiting for either a PIO Setup
88     * FIS or a D2H register FIS.  The type of frame received is based on the
89     * result of the prior frame and line conditions.
90     */
91    SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
92 
93    /**
94     * While in this state the IO request object is waiting for a DATA frame from
95     * the device.
96     */
97    SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
98 
99    /**
100     * While in this state the IO request object is waiting to transmit the next data
101     * frame to the device.
102     */
103    SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
104 
105    SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES
106 };
107 
108 
109 
110 
111 // ---------------------------------------------------------------------------
112 
113 extern SCIC_SDS_IO_REQUEST_STATE_HANDLER_T
114    scic_sds_stp_request_started_pio_substate_handler_table[
115       SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES];
116 
117 extern SCI_BASE_STATE_T
118    scic_sds_stp_request_started_pio_substate_table[
119       SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES];
120 
121 // ---------------------------------------------------------------------------
122 
123 SCU_SGL_ELEMENT_T * scic_sds_stp_request_pio_get_next_sgl(
124    SCIC_SDS_STP_REQUEST_T * this_request
125 );
126 
127 #ifdef __cplusplus
128 }
129 #endif // __cplusplus
130 
131 #endif   // _SCIC_SDS_SATA_PIO_REQUEST_H_
132