1 /******************************************************************************
2 *
3 * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44
45 #define __EVXFEVNT_C__
46
47 #include "acpi.h"
48 #include "accommon.h"
49 #include "actables.h"
50
51 #define _COMPONENT ACPI_EVENTS
52 ACPI_MODULE_NAME ("evxfevnt")
53
54
55 /*******************************************************************************
56 *
57 * FUNCTION: AcpiEnable
58 *
59 * PARAMETERS: None
60 *
61 * RETURN: Status
62 *
63 * DESCRIPTION: Transfers the system into ACPI mode.
64 *
65 ******************************************************************************/
66
67 ACPI_STATUS
68 AcpiEnable (
69 void)
70 {
71 ACPI_STATUS Status = AE_OK;
72
73
74 ACPI_FUNCTION_TRACE (AcpiEnable);
75
76
77 /* ACPI tables must be present */
78
79 if (!AcpiTbTablesLoaded ())
80 {
81 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
82 }
83
84 /* Check current mode */
85
86 if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI)
87 {
88 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n"));
89 }
90 else
91 {
92 /* Transition to ACPI mode */
93
94 Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI);
95 if (ACPI_FAILURE (Status))
96 {
97 ACPI_ERROR ((AE_INFO, "Could not transition to ACPI mode"));
98 return_ACPI_STATUS (Status);
99 }
100
101 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
102 "Transition to ACPI mode successful\n"));
103 }
113 * FUNCTION: AcpiDisable
114 *
115 * PARAMETERS: None
116 *
117 * RETURN: Status
118 *
119 * DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode.
120 *
121 ******************************************************************************/
122
123 ACPI_STATUS
124 AcpiDisable (
125 void)
126 {
127 ACPI_STATUS Status = AE_OK;
128
129
130 ACPI_FUNCTION_TRACE (AcpiDisable);
131
132
133 if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY)
134 {
135 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
136 "System is already in legacy (non-ACPI) mode\n"));
137 }
138 else
139 {
140 /* Transition to LEGACY mode */
141
142 Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY);
143
144 if (ACPI_FAILURE (Status))
145 {
146 ACPI_ERROR ((AE_INFO,
147 "Could not exit ACPI mode to legacy mode"));
148 return_ACPI_STATUS (Status);
149 }
150
151 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n"));
152 }
360 return_ACPI_STATUS (AE_BAD_PARAMETER);
361 }
362
363 /* Decode the Fixed Event */
364
365 if (Event > ACPI_EVENT_MAX)
366 {
367 return_ACPI_STATUS (AE_BAD_PARAMETER);
368 }
369
370 /* Get the status of the requested fixed event */
371
372 Status = AcpiReadBitRegister (
373 AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus);
374
375 return_ACPI_STATUS (Status);
376 }
377
378 ACPI_EXPORT_SYMBOL (AcpiGetEventStatus)
379
380
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1 /******************************************************************************
2 *
3 * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2014, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44
45 #define __EVXFEVNT_C__
46 #define EXPORT_ACPI_INTERFACES
47
48 #include "acpi.h"
49 #include "accommon.h"
50 #include "actables.h"
51
52 #define _COMPONENT ACPI_EVENTS
53 ACPI_MODULE_NAME ("evxfevnt")
54
55
56 #if (!ACPI_REDUCED_HARDWARE) /* Entire module */
57 /*******************************************************************************
58 *
59 * FUNCTION: AcpiEnable
60 *
61 * PARAMETERS: None
62 *
63 * RETURN: Status
64 *
65 * DESCRIPTION: Transfers the system into ACPI mode.
66 *
67 ******************************************************************************/
68
69 ACPI_STATUS
70 AcpiEnable (
71 void)
72 {
73 ACPI_STATUS Status = AE_OK;
74
75
76 ACPI_FUNCTION_TRACE (AcpiEnable);
77
78
79 /* ACPI tables must be present */
80
81 if (!AcpiTbTablesLoaded ())
82 {
83 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
84 }
85
86 /* If the Hardware Reduced flag is set, machine is always in acpi mode */
87
88 if (AcpiGbl_ReducedHardware)
89 {
90 return_ACPI_STATUS (AE_OK);
91 }
92
93 /* Check current mode */
94
95 if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI)
96 {
97 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n"));
98 }
99 else
100 {
101 /* Transition to ACPI mode */
102
103 Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI);
104 if (ACPI_FAILURE (Status))
105 {
106 ACPI_ERROR ((AE_INFO, "Could not transition to ACPI mode"));
107 return_ACPI_STATUS (Status);
108 }
109
110 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
111 "Transition to ACPI mode successful\n"));
112 }
122 * FUNCTION: AcpiDisable
123 *
124 * PARAMETERS: None
125 *
126 * RETURN: Status
127 *
128 * DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode.
129 *
130 ******************************************************************************/
131
132 ACPI_STATUS
133 AcpiDisable (
134 void)
135 {
136 ACPI_STATUS Status = AE_OK;
137
138
139 ACPI_FUNCTION_TRACE (AcpiDisable);
140
141
142 /* If the Hardware Reduced flag is set, machine is always in acpi mode */
143
144 if (AcpiGbl_ReducedHardware)
145 {
146 return_ACPI_STATUS (AE_OK);
147 }
148
149 if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY)
150 {
151 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
152 "System is already in legacy (non-ACPI) mode\n"));
153 }
154 else
155 {
156 /* Transition to LEGACY mode */
157
158 Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY);
159
160 if (ACPI_FAILURE (Status))
161 {
162 ACPI_ERROR ((AE_INFO,
163 "Could not exit ACPI mode to legacy mode"));
164 return_ACPI_STATUS (Status);
165 }
166
167 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n"));
168 }
376 return_ACPI_STATUS (AE_BAD_PARAMETER);
377 }
378
379 /* Decode the Fixed Event */
380
381 if (Event > ACPI_EVENT_MAX)
382 {
383 return_ACPI_STATUS (AE_BAD_PARAMETER);
384 }
385
386 /* Get the status of the requested fixed event */
387
388 Status = AcpiReadBitRegister (
389 AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus);
390
391 return_ACPI_STATUS (Status);
392 }
393
394 ACPI_EXPORT_SYMBOL (AcpiGetEventStatus)
395
396 #endif /* !ACPI_REDUCED_HARDWARE */
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