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
|
/*++
This file contains an 'Intel Peripheral Driver' and uniquely
identified as "Intel Reference Module" and is
licensed for Intel CPUs and chipsets under the terms of your
license agreement with Intel or your vendor. This file may
be modified by the user, subject to additional terms of the
license agreement
--*/
/*++
Copyright (c) 2006 - 2010 Intel Corporation. All rights reserved
This software and associated documentation (if any) is furnished
under a license and may only be used or copied in accordance
with the terms of the license. Except as permitted by such
license, no part of this software or documentation may be
reproduced, stored in a retrieval system, or transmitted in any
form or by any means without the express written consent of
Intel Corporation.
Module Name:
HeciHpet.h
Abstract:
Definitions for HECI driver
--*/
#ifndef _HECI_HPET_H
#define _HECI_HPET_H
#include "EdkIIGlueDxe.h"
#include "MeAccess.h"
#include "HeciRegs.h"
#include "Pci22.h"
#define HECI_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32 ('H', 'e', 'c', 'i')
#define HECI_ROUND_UP_BUFFER_LENGTH(Length) ((UINT32) ((((Length) + 3) / 4) * 4))
//
// Driver Produced Protocol Prototypes
//
#include EFI_PROTOCOL_PRODUCER (HeciSmm)
VOID
SaveHpet (
VOID
)
/*++
Routine Description:
Store the value of High Performance Timer
Arguments:
None
Returns:
None
--*/
;
VOID
RestoreHpet (
VOID
)
/*++
Routine Description:
Restore the value of High Performance Timer
Arguments:
None
Returns:
None
--*/
;
VOID
StartTimer (
OUT UINT32 *Start,
OUT UINT32 *End,
IN UINT32 Time
)
/*++
Routine Description:
Used for calculating timeouts
Arguments:
Start - Snapshot of the HPET timer
End - Calculated time when timeout period will be done
Time - Timeout period in microseconds
Returns:
VOID
--*/
;
EFI_STATUS
Timeout (
IN UINT32 Start,
IN UINT32 End
)
/*++
Routine Description:
Used to determine if a timeout has occured.
Arguments:
Start - Snapshot of the HPET timer when the timeout period started.
End - Calculated time when timeout period will be done.
Returns:
EFI_STATUS
--*/
;
VOID
EnableHpet (
VOID
)
/*++
Routine Description:
Enable Hpet function.
Arguments:
None.
Returns:
None.
--*/
;
VOID
IoDelay (
UINT32 delayTime
)
/*++
Routine Description:
Delay for at least the request number of microseconds
Arguments:
delayTime - Number of microseconds to delay.
Returns:
None.
--*/
;
VOID
SmmStall (
IN UINTN Microseconds
)
/*++
Routine Description:
Delay for at least the request number of microseconds.
Timer used is DMA refresh timer, which has 15us granularity.
You can call with any number of microseconds, but this
implementation cannot support 1us granularity.
Arguments:
Microseconds - Number of microseconds to delay.
Returns:
None
--*/
;
#endif // _HECI_HPET_H
|
