1/*-
2 * Copyright (c) 2002 Mitsaru Iwasaki
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27/*
28 * ACPI Table interfaces
29 */
30
31#include <sys/param.h>
32#include <sys/endian.h>
33#include <sys/kernel.h>
34#include <sys/linker.h>
35
36#include <contrib/dev/acpica/include/acpi.h>
37#include <contrib/dev/acpica/include/aclocal.h>
38#include <contrib/dev/acpica/include/actables.h>
39
40#undef _COMPONENT
41#define	_COMPONENT      ACPI_TABLES
42
43static char acpi_osname[128];
44TUNABLE_STR("hw.acpi.osname", acpi_osname, sizeof(acpi_osname));
45
46ACPI_STATUS
47AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES *InitVal,
48    ACPI_STRING *NewVal)
49{
50
51	if (InitVal == NULL || NewVal == NULL)
52		return (AE_BAD_PARAMETER);
53
54	*NewVal = NULL;
55	if (ACPI_COMPARE_NAMESEG(InitVal->Name, "_OS_") &&
56	    InitVal->Type == ACPI_TYPE_STRING && strlen(acpi_osname) > 0) {
57		printf("ACPI: Overriding _OS definition with \"%s\"\n",
58		    acpi_osname);
59		*NewVal = acpi_osname;
60	}
61	return (AE_OK);
62}
63
64ACPI_STATUS
65AcpiOsTableOverride(ACPI_TABLE_HEADER *ExistingTable,
66    ACPI_TABLE_HEADER **NewTable)
67{
68	char modname[] = "acpi_dsdt";
69	caddr_t acpi_table;
70	ACPI_TABLE_HEADER *hdr;
71	size_t sz;
72
73	if (ExistingTable == NULL || NewTable == NULL)
74		return (AE_BAD_PARAMETER);
75
76	*NewTable = NULL;
77	if (!ACPI_COMPARE_NAMESEG(ExistingTable->Signature, ACPI_SIG_DSDT))
78#ifdef notyet
79		for (int i = 0; i < ACPI_NAMESEG_SIZE; i++)
80			modname[i + 5] = tolower(ExistingTable->Signature[i]);
81#else
82		return (AE_SUPPORT);
83#endif
84	acpi_table = preload_search_by_type(modname);
85	if (acpi_table == NULL)
86		return (AE_NOT_FOUND);
87	hdr = preload_fetch_addr(acpi_table);
88	sz = preload_fetch_size(acpi_table);
89	if (hdr == NULL || sz == 0)
90		return (AE_ERROR);
91#ifndef notyet
92	/* Assume SSDT is installed with DSDT. */
93	AcpiGbl_DisableSsdtTableInstall = TRUE;
94#endif
95	*NewTable = hdr;
96	return (AE_OK);
97}
98
99ACPI_STATUS
100AcpiOsPhysicalTableOverride(ACPI_TABLE_HEADER *ExistingTable,
101    ACPI_PHYSICAL_ADDRESS *NewAddress, UINT32 *NewTableLength)
102{
103
104	return (AE_SUPPORT);
105}
106