xref: /freebsd/sys/dev/isci/scil/scic_sds_stp_pio_request.h (revision 4f52dfbb8d6c4d446500c5b097e3806ec219fbd4)
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.
10  *
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
13  * published by the Free Software Foundation.
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16  * WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18  * General Public License for more details.
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21  * along with this program; if not, write to the Free Software
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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26  * BSD LICENSE
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28  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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55  */
56 #ifndef _SCIC_SDS_SATA_PIO_REQUEST_H_
57 #define _SCIC_SDS_SATA_PIO_REQUEST_H_
58 
59 #ifdef __cplusplus
60 extern "C" {
61 #endif // __cplusplus
62 
63 #include <dev/isci/scil/sci_base_state.h>
64 #include <dev/isci/scil/scic_sds_request.h>
65 #include <dev/isci/scil/scu_task_context.h>
66 
67 /**
68  * @file
69  *
70  * @brief This file contains the structures and constants for SATA PIO
71  *        requests.
72  */
73 
74 
75 /**
76  * @enum
77  *
78  * This is the enumeration of the SATA PIO DATA IN started substate machine.
79  */
80 enum _SCIC_SDS_STP_REQUEST_STARTED_PIO_SUBSTATES
81 {
82    /**
83     * While in this state the IO request object is waiting for the TC completion
84     * notification for the H2D Register FIS
85     */
86    SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
87 
88    /**
89     * While in this state the IO request object is waiting for either a PIO Setup
90     * FIS or a D2H register FIS.  The type of frame received is based on the
91     * result of the prior frame and line conditions.
92     */
93    SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
94 
95    /**
96     * While in this state the IO request object is waiting for a DATA frame from
97     * the device.
98     */
99    SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
100 
101    /**
102     * While in this state the IO request object is waiting to transmit the next data
103     * frame to the device.
104     */
105    SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
106 
107    SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES
108 };
109 
110 
111 
112 
113 // ---------------------------------------------------------------------------
114 
115 extern SCIC_SDS_IO_REQUEST_STATE_HANDLER_T
116    scic_sds_stp_request_started_pio_substate_handler_table[
117       SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES];
118 
119 extern SCI_BASE_STATE_T
120    scic_sds_stp_request_started_pio_substate_table[
121       SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES];
122 
123 // ---------------------------------------------------------------------------
124 
125 SCU_SGL_ELEMENT_T * scic_sds_stp_request_pio_get_next_sgl(
126    SCIC_SDS_STP_REQUEST_T * this_request
127 );
128 
129 #ifdef __cplusplus
130 }
131 #endif // __cplusplus
132 
133 #endif   // _SCIC_SDS_SATA_PIO_REQUEST_H_
134