1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* BSD LICENSE
*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SCIC_SDS_REMOTE_NODE_CONTEXT_H_
#define _SCIC_SDS_REMOTE_NODE_CONTEXT_H_
/**
* This file contains the structures, constants, and prototypes associated with
* the remote node context in the silicon. It exists to model and manage
* the remote node context in the silicon.
*
*
*/
#include "isci.h"
/**
*
*
* This constant represents an invalid remote device id, it is used to program
* the STPDARNI register so the driver knows when it has received a SIGNATURE
* FIS from the SCU.
*/
#define SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX 0x0FFF
#define SCU_HARDWARE_SUSPENSION (0)
#define SCI_SOFTWARE_SUSPENSION (1)
struct isci_request;
struct isci_remote_device;
struct sci_remote_node_context;
typedef void (*scics_sds_remote_node_context_callback)(void *);
/**
* This is the enumeration of the remote node context states.
*/
enum scis_sds_remote_node_context_states {
/**
* This state is the initial state for a remote node context. On a resume
* request the remote node context will transition to the posting state.
*/
SCI_RNC_INITIAL,
/**
* This is a transition state that posts the RNi to the hardware. Once the RNC
* is posted the remote node context will be made ready.
*/
SCI_RNC_POSTING,
/**
* This is a transition state that will post an RNC invalidate to the
* hardware. Once the invalidate is complete the remote node context will
* transition to the posting state.
*/
SCI_RNC_INVALIDATING,
/**
* This is a transition state that will post an RNC resume to the hardare.
* Once the event notification of resume complete is received the remote node
* context will transition to the ready state.
*/
SCI_RNC_RESUMING,
/**
* This is the state that the remote node context must be in to accept io
* request operations.
*/
SCI_RNC_READY,
/**
* This is the state that the remote node context transitions to when it gets
* a TX suspend notification from the hardware.
*/
SCI_RNC_TX_SUSPENDED,
/**
* This is the state that the remote node context transitions to when it gets
* a TX RX suspend notification from the hardware.
*/
SCI_RNC_TX_RX_SUSPENDED,
/**
* This state is a wait state for the remote node context that waits for a
* suspend notification from the hardware. This state is entered when either
* there is a request to supend the remote node context or when there is a TC
* completion where the remote node will be suspended by the hardware.
*/
SCI_RNC_AWAIT_SUSPENSION
};
/**
*
*
* This enumeration is used to define the end destination state for the remote
* node context.
*/
enum sci_remote_node_context_destination_state {
SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED,
SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY,
SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL
};
/**
* struct sci_remote_node_context - This structure contains the data
* associated with the remote node context object. The remote node context
* (RNC) object models the the remote device information necessary to manage
* the silicon RNC.
*/
struct sci_remote_node_context {
/**
* This field indicates the remote node index (RNI) associated with
* this RNC.
*/
u16 remote_node_index;
/**
* This field is the recored suspension code or the reason for the remote node
* context suspension.
*/
u32 suspension_code;
/**
* This field is true if the remote node context is resuming from its current
* state. This can cause an automatic resume on receiving a suspension
* notification.
*/
enum sci_remote_node_context_destination_state destination_state;
/**
* This field contains the callback function that the user requested to be
* called when the requested state transition is complete.
*/
scics_sds_remote_node_context_callback user_callback;
/**
* This field contains the parameter that is called when the user requested
* state transition is completed.
*/
void *user_cookie;
/**
* This field contains the data for the object's state machine.
*/
struct sci_base_state_machine sm;
};
void sci_remote_node_context_construct(struct sci_remote_node_context *rnc,
u16 remote_node_index);
bool sci_remote_node_context_is_ready(
struct sci_remote_node_context *sci_rnc);
#define sci_remote_node_context_get_remote_node_index(rcn) \
((rnc)->remote_node_index)
enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_context *sci_rnc,
u32 event_code);
enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context *sci_rnc,
scics_sds_remote_node_context_callback callback,
void *callback_parameter);
enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context *sci_rnc,
u32 suspend_type,
scics_sds_remote_node_context_callback cb_fn,
void *cb_p);
enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *sci_rnc,
scics_sds_remote_node_context_callback cb_fn,
void *cb_p);
enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc,
struct isci_request *ireq);
enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context *sci_rnc,
struct isci_request *ireq);
#endif /* _SCIC_SDS_REMOTE_NODE_CONTEXT_H_ */
|
