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
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
|
/******************************************************************************
*
* Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
* $Revision: 22 $
*
*****************************************************************************/
/*
* Copyright (C) 2000, 2001 R. Byron Moore
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "acpi.h"
#include "acnamesp.h"
#include "achware.h"
#define _COMPONENT ACPI_HARDWARE
MODULE_NAME ("hwsleep")
/******************************************************************************
*
* FUNCTION: Acpi_set_firmware_waking_vector
*
* PARAMETERS: Physical_address - Physical address of ACPI real mode
* entry point.
*
* RETURN: AE_OK or AE_ERROR
*
* DESCRIPTION: Access function for d_firmware_waking_vector field in FACS
*
******************************************************************************/
acpi_status
acpi_set_firmware_waking_vector (
ACPI_PHYSICAL_ADDRESS physical_address)
{
FUNCTION_TRACE ("Acpi_set_firmware_waking_vector");
/* Make sure that we have an FACS */
if (!acpi_gbl_FACS) {
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
}
/* Set the vector */
if (acpi_gbl_FACS->vector_width == 32) {
* (u32 *) acpi_gbl_FACS->firmware_waking_vector = (u32) physical_address;
}
else {
*acpi_gbl_FACS->firmware_waking_vector = physical_address;
}
return_ACPI_STATUS (AE_OK);
}
/******************************************************************************
*
* FUNCTION: Acpi_get_firmware_waking_vector
*
* PARAMETERS: *Physical_address - Output buffer where contents of
* the Firmware_waking_vector field of
* the FACS will be stored.
*
* RETURN: Status
*
* DESCRIPTION: Access function for d_firmware_waking_vector field in FACS
*
******************************************************************************/
acpi_status
acpi_get_firmware_waking_vector (
ACPI_PHYSICAL_ADDRESS *physical_address)
{
FUNCTION_TRACE ("Acpi_get_firmware_waking_vector");
if (!physical_address) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Make sure that we have an FACS */
if (!acpi_gbl_FACS) {
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
}
/* Get the vector */
if (acpi_gbl_FACS->vector_width == 32) {
*physical_address = * (u32 *) acpi_gbl_FACS->firmware_waking_vector;
}
else {
*physical_address = *acpi_gbl_FACS->firmware_waking_vector;
}
return_ACPI_STATUS (AE_OK);
}
/******************************************************************************
*
* FUNCTION: Acpi_enter_sleep_state
*
* PARAMETERS: Sleep_state - Which sleep state to enter
*
* RETURN: Status
*
* DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
*
******************************************************************************/
acpi_status
acpi_enter_sleep_state (
u8 sleep_state)
{
acpi_status status;
acpi_object_list arg_list;
acpi_object arg;
u8 type_a;
u8 type_b;
u16 PM1Acontrol;
u16 PM1Bcontrol;
FUNCTION_TRACE ("Acpi_enter_sleep_state");
/*
* _PSW methods could be run here to enable wake-on keyboard, LAN, etc.
*/
status = acpi_hw_obtain_sleep_type_register_data (sleep_state, &type_a, &type_b);
if (!ACPI_SUCCESS (status)) {
return status;
}
/* run the _PTS and _GTS methods */
MEMSET(&arg_list, 0, sizeof(arg_list));
arg_list.count = 1;
arg_list.pointer = &arg;
MEMSET(&arg, 0, sizeof(arg));
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = sleep_state;
acpi_evaluate_object (NULL, "\\_PTS", &arg_list, NULL);
acpi_evaluate_object (NULL, "\\_GTS", &arg_list, NULL);
/* clear wake status */
acpi_hw_register_bit_access (ACPI_WRITE, ACPI_MTX_LOCK, WAK_STS, 1);
disable ();
acpi_hw_disable_non_wakeup_gpes();
PM1Acontrol = (u16) acpi_hw_register_read (ACPI_MTX_LOCK, PM1_CONTROL);
ACPI_DEBUG_PRINT ((ACPI_DB_OK, "Entering S%d\n", sleep_state));
/* mask off SLP_EN and SLP_TYP fields */
PM1Acontrol &= ~(SLP_TYPE_X_MASK | SLP_EN_MASK);
PM1Bcontrol = PM1Acontrol;
/* mask in SLP_TYP */
PM1Acontrol |= (type_a << acpi_hw_get_bit_shift (SLP_TYPE_X_MASK));
PM1Bcontrol |= (type_b << acpi_hw_get_bit_shift (SLP_TYPE_X_MASK));
/* write #1: fill in SLP_TYP data */
acpi_hw_register_write (ACPI_MTX_LOCK, PM1A_CONTROL, PM1Acontrol);
acpi_hw_register_write (ACPI_MTX_LOCK, PM1B_CONTROL, PM1Bcontrol);
/* mask in SLP_EN */
PM1Acontrol |= (1 << acpi_hw_get_bit_shift (SLP_EN_MASK));
PM1Bcontrol |= (1 << acpi_hw_get_bit_shift (SLP_EN_MASK));
/* flush caches */
wbinvd();
/* write #2: SLP_TYP + SLP_EN */
acpi_hw_register_write (ACPI_MTX_LOCK, PM1A_CONTROL, PM1Acontrol);
acpi_hw_register_write (ACPI_MTX_LOCK, PM1B_CONTROL, PM1Bcontrol);
/*
* Wait a second, then try again. This is to get S4/5 to work on all machines.
*/
if (sleep_state > ACPI_STATE_S3) {
acpi_os_stall(1000000);
acpi_hw_register_write (ACPI_MTX_LOCK, PM1_CONTROL,
(1 << acpi_hw_get_bit_shift (SLP_EN_MASK)));
}
/* wait until we enter sleep state */
do {
acpi_os_stall(10000);
}
while (!acpi_hw_register_bit_access (ACPI_READ, ACPI_MTX_LOCK, WAK_STS));
acpi_hw_enable_non_wakeup_gpes();
enable ();
return_ACPI_STATUS (AE_OK);
}
/******************************************************************************
*
* FUNCTION: Acpi_leave_sleep_state
*
* PARAMETERS: Sleep_state - Which sleep state we just exited
*
* RETURN: Status
*
* DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
*
******************************************************************************/
acpi_status
acpi_leave_sleep_state (
u8 sleep_state)
{
acpi_object_list arg_list;
acpi_object arg;
FUNCTION_TRACE ("Acpi_leave_sleep_state");
MEMSET (&arg_list, 0, sizeof(arg_list));
arg_list.count = 1;
arg_list.pointer = &arg;
MEMSET (&arg, 0, sizeof(arg));
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = sleep_state;
acpi_evaluate_object (NULL, "\\_BFS", &arg_list, NULL);
acpi_evaluate_object (NULL, "\\_WAK", &arg_list, NULL);
/* _WAK returns stuff - do we want to look at it? */
acpi_hw_enable_non_wakeup_gpes();
return_ACPI_STATUS (AE_OK);
}
|
