1 /******************************************************************************
2 *
3 * Module Name: evevent - Fixed Event handling and dispatch
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.
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 #include "acpi.h"
45 #include "accommon.h"
46 #include "acevents.h"
47
48 #define _COMPONENT ACPI_EVENTS
49 ACPI_MODULE_NAME ("evevent")
50
51 /* Local prototypes */
52
53 static ACPI_STATUS
54 AcpiEvFixedEventInitialize (
55 void);
56
57 static UINT32
58 AcpiEvFixedEventDispatch (
59 UINT32 Event);
60
61
62 /*******************************************************************************
63 *
64 * FUNCTION: AcpiEvInitializeEvents
65 *
66 * PARAMETERS: None
67 *
68 * RETURN: Status
69 *
70 * DESCRIPTION: Initialize global data structures for ACPI events (Fixed, GPE)
71 *
72 ******************************************************************************/
73
74 ACPI_STATUS
75 AcpiEvInitializeEvents (
76 void)
77 {
78 ACPI_STATUS Status;
79
80
81 ACPI_FUNCTION_TRACE (EvInitializeEvents);
82
83
84 /*
85 * Initialize the Fixed and General Purpose Events. This is done prior to
86 * enabling SCIs to prevent interrupts from occurring before the handlers
87 * are installed.
88 */
89 Status = AcpiEvFixedEventInitialize ();
90 if (ACPI_FAILURE (Status))
91 {
92 ACPI_EXCEPTION ((AE_INFO, Status,
93 "Unable to initialize fixed events"));
94 return_ACPI_STATUS (Status);
95 }
96
97 Status = AcpiEvGpeInitialize ();
98 if (ACPI_FAILURE (Status))
99 {
100 ACPI_EXCEPTION ((AE_INFO, Status,
101 "Unable to initialize general purpose events"));
102 return_ACPI_STATUS (Status);
103 }
111 * FUNCTION: AcpiEvInstallXruptHandlers
112 *
113 * PARAMETERS: None
114 *
115 * RETURN: Status
116 *
117 * DESCRIPTION: Install interrupt handlers for the SCI and Global Lock
118 *
119 ******************************************************************************/
120
121 ACPI_STATUS
122 AcpiEvInstallXruptHandlers (
123 void)
124 {
125 ACPI_STATUS Status;
126
127
128 ACPI_FUNCTION_TRACE (EvInstallXruptHandlers);
129
130
131 /* Install the SCI handler */
132
133 Status = AcpiEvInstallSciHandler ();
134 if (ACPI_FAILURE (Status))
135 {
136 ACPI_EXCEPTION ((AE_INFO, Status,
137 "Unable to install System Control Interrupt handler"));
138 return_ACPI_STATUS (Status);
139 }
140
141 /* Install the handler for the Global Lock */
142
143 Status = AcpiEvInitGlobalLockHandler ();
144 if (ACPI_FAILURE (Status))
145 {
146 ACPI_EXCEPTION ((AE_INFO, Status,
147 "Unable to initialize Global Lock handler"));
148 return_ACPI_STATUS (Status);
149 }
150
258 }
259
260 IntStatus |= AcpiEvFixedEventDispatch (i);
261 }
262 }
263
264 return (IntStatus);
265 }
266
267
268 /*******************************************************************************
269 *
270 * FUNCTION: AcpiEvFixedEventDispatch
271 *
272 * PARAMETERS: Event - Event type
273 *
274 * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
275 *
276 * DESCRIPTION: Clears the status bit for the requested event, calls the
277 * handler that previously registered for the event.
278 *
279 ******************************************************************************/
280
281 static UINT32
282 AcpiEvFixedEventDispatch (
283 UINT32 Event)
284 {
285
286 ACPI_FUNCTION_ENTRY ();
287
288
289 /* Clear the status bit */
290
291 (void) AcpiWriteBitRegister (
292 AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
293 ACPI_CLEAR_STATUS);
294
295 /*
296 * Make sure we've got a handler. If not, report an error. The event is
297 * disabled to prevent further interrupts.
298 */
299 if (NULL == AcpiGbl_FixedEventHandlers[Event].Handler)
300 {
301 (void) AcpiWriteBitRegister (
302 AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
303 ACPI_DISABLE_EVENT);
304
305 ACPI_ERROR ((AE_INFO,
306 "No installed handler for fixed event [0x%08X]",
307 Event));
308
309 return (ACPI_INTERRUPT_NOT_HANDLED);
310 }
311
312 /* Invoke the Fixed Event handler */
313
314 return ((AcpiGbl_FixedEventHandlers[Event].Handler)(
315 AcpiGbl_FixedEventHandlers[Event].Context));
316 }
317
318
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1 /******************************************************************************
2 *
3 * Module Name: evevent - Fixed Event handling and dispatch
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.
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 #include "acpi.h"
45 #include "accommon.h"
46 #include "acevents.h"
47
48 #define _COMPONENT ACPI_EVENTS
49 ACPI_MODULE_NAME ("evevent")
50
51 #if (!ACPI_REDUCED_HARDWARE) /* Entire module */
52
53 /* Local prototypes */
54
55 static ACPI_STATUS
56 AcpiEvFixedEventInitialize (
57 void);
58
59 static UINT32
60 AcpiEvFixedEventDispatch (
61 UINT32 Event);
62
63
64 /*******************************************************************************
65 *
66 * FUNCTION: AcpiEvInitializeEvents
67 *
68 * PARAMETERS: None
69 *
70 * RETURN: Status
71 *
72 * DESCRIPTION: Initialize global data structures for ACPI events (Fixed, GPE)
73 *
74 ******************************************************************************/
75
76 ACPI_STATUS
77 AcpiEvInitializeEvents (
78 void)
79 {
80 ACPI_STATUS Status;
81
82
83 ACPI_FUNCTION_TRACE (EvInitializeEvents);
84
85
86 /* If Hardware Reduced flag is set, there are no fixed events */
87
88 if (AcpiGbl_ReducedHardware)
89 {
90 return_ACPI_STATUS (AE_OK);
91 }
92
93 /*
94 * Initialize the Fixed and General Purpose Events. This is done prior to
95 * enabling SCIs to prevent interrupts from occurring before the handlers
96 * are installed.
97 */
98 Status = AcpiEvFixedEventInitialize ();
99 if (ACPI_FAILURE (Status))
100 {
101 ACPI_EXCEPTION ((AE_INFO, Status,
102 "Unable to initialize fixed events"));
103 return_ACPI_STATUS (Status);
104 }
105
106 Status = AcpiEvGpeInitialize ();
107 if (ACPI_FAILURE (Status))
108 {
109 ACPI_EXCEPTION ((AE_INFO, Status,
110 "Unable to initialize general purpose events"));
111 return_ACPI_STATUS (Status);
112 }
120 * FUNCTION: AcpiEvInstallXruptHandlers
121 *
122 * PARAMETERS: None
123 *
124 * RETURN: Status
125 *
126 * DESCRIPTION: Install interrupt handlers for the SCI and Global Lock
127 *
128 ******************************************************************************/
129
130 ACPI_STATUS
131 AcpiEvInstallXruptHandlers (
132 void)
133 {
134 ACPI_STATUS Status;
135
136
137 ACPI_FUNCTION_TRACE (EvInstallXruptHandlers);
138
139
140 /* If Hardware Reduced flag is set, there is no ACPI h/w */
141
142 if (AcpiGbl_ReducedHardware)
143 {
144 return_ACPI_STATUS (AE_OK);
145 }
146
147 /* Install the SCI handler */
148
149 Status = AcpiEvInstallSciHandler ();
150 if (ACPI_FAILURE (Status))
151 {
152 ACPI_EXCEPTION ((AE_INFO, Status,
153 "Unable to install System Control Interrupt handler"));
154 return_ACPI_STATUS (Status);
155 }
156
157 /* Install the handler for the Global Lock */
158
159 Status = AcpiEvInitGlobalLockHandler ();
160 if (ACPI_FAILURE (Status))
161 {
162 ACPI_EXCEPTION ((AE_INFO, Status,
163 "Unable to initialize Global Lock handler"));
164 return_ACPI_STATUS (Status);
165 }
166
274 }
275
276 IntStatus |= AcpiEvFixedEventDispatch (i);
277 }
278 }
279
280 return (IntStatus);
281 }
282
283
284 /*******************************************************************************
285 *
286 * FUNCTION: AcpiEvFixedEventDispatch
287 *
288 * PARAMETERS: Event - Event type
289 *
290 * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
291 *
292 * DESCRIPTION: Clears the status bit for the requested event, calls the
293 * handler that previously registered for the event.
294 * NOTE: If there is no handler for the event, the event is
295 * disabled to prevent further interrupts.
296 *
297 ******************************************************************************/
298
299 static UINT32
300 AcpiEvFixedEventDispatch (
301 UINT32 Event)
302 {
303
304 ACPI_FUNCTION_ENTRY ();
305
306
307 /* Clear the status bit */
308
309 (void) AcpiWriteBitRegister (
310 AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
311 ACPI_CLEAR_STATUS);
312
313 /*
314 * Make sure that a handler exists. If not, report an error
315 * and disable the event to prevent further interrupts.
316 */
317 if (!AcpiGbl_FixedEventHandlers[Event].Handler)
318 {
319 (void) AcpiWriteBitRegister (
320 AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
321 ACPI_DISABLE_EVENT);
322
323 ACPI_ERROR ((AE_INFO,
324 "No installed handler for fixed event - %s (%u), disabling",
325 AcpiUtGetEventName (Event), Event));
326
327 return (ACPI_INTERRUPT_NOT_HANDLED);
328 }
329
330 /* Invoke the Fixed Event handler */
331
332 return ((AcpiGbl_FixedEventHandlers[Event].Handler)(
333 AcpiGbl_FixedEventHandlers[Event].Context));
334 }
335
336 #endif /* !ACPI_REDUCED_HARDWARE */
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