2 * Copyright (c) 2001 Mitsuru IWASAKI
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <machine/cpufunc.h>
31 #include <dev/acpica/acpica_support.h>
33 ACPI_MODULE_NAME("SUPPORT")
36 * Implement support code temporary here until officially merged into
37 * Intel ACPI CA release.
41 #define _COMPONENT ACPI_HARDWARE
43 /******************************************************************************
45 * FUNCTION: AcpiEnterSleepStateS4Bios
51 * DESCRIPTION: Enter a system sleep state S4BIOS
53 ******************************************************************************/
56 AcpiEnterSleepStateS4Bios (
59 ACPI_OBJECT_LIST ArgList;
63 ACPI_FUNCTION_TRACE ("AcpiEnterSleepStateS4Bios");
65 /* run the _PTS and _GTS methods */
67 ACPI_MEMSET(&ArgList, 0, sizeof(ArgList));
69 ArgList.Pointer = &Arg;
71 ACPI_MEMSET(&Arg, 0, sizeof(Arg));
72 Arg.Type = ACPI_TYPE_INTEGER;
73 Arg.Integer.Value = ACPI_STATE_S4;
75 AcpiEvaluateObject (NULL, "\\_PTS", &ArgList, NULL);
76 AcpiEvaluateObject (NULL, "\\_GTS", &ArgList, NULL);
78 /* clear wake status */
80 AcpiHwBitRegisterWrite (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_LOCK);
84 AcpiHwDisableNonWakeupGpes();
92 /* write the value to command port and wait until we enter sleep state */
96 AcpiOsWritePort (AcpiGbl_FADT->SmiCmd, AcpiGbl_FADT->S4BiosReq, 8);
98 while (!AcpiHwBitRegisterRead (ACPI_BITREG_WAKE_STATUS, ACPI_MTX_LOCK));
100 AcpiHwEnableNonWakeupGpes();
104 return_ACPI_STATUS (AE_OK);
109 #define _COMPONENT ACPI_TABLES
111 /*******************************************************************************
113 * FUNCTION: AcpiSetDsdtTablePtr
115 * PARAMETERS: TablePtr - pointer to a buffer containing the entire
116 * DSDT table to override
120 * DESCRIPTION: Set DSDT table ptr for DSDT overriding. This function should
121 * be called perior than AcpiLoadTables().
123 ******************************************************************************/
127 ACPI_TABLE_HEADER *TablePtr)
129 ACPI_FUNCTION_TRACE ("AcpiSetDsdtTablePtr");
133 return_ACPI_STATUS (AE_BAD_PARAMETER);
136 if (AcpiGbl_AcpiTables[ACPI_TABLE_DSDT].LoadedIntoNamespace)
138 return_ACPI_STATUS (AE_ALREADY_EXISTS);
141 AcpiGbl_DSDT = TablePtr;
143 return_ACPI_STATUS (AE_OK);