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/cdefs.h>
32__FBSDID("$FreeBSD: stable/11/sys/dev/acpica/Osd/OsdTable.c 316303 2017-03-30 20:18:34Z jkim $");
33
34#include <sys/param.h>
35#include <sys/endian.h>
36#include <sys/kernel.h>
37#include <sys/linker.h>
38
39#include <contrib/dev/acpica/include/acpi.h>
40#include <contrib/dev/acpica/include/aclocal.h>
41#include <contrib/dev/acpica/include/actables.h>
42
43#undef _COMPONENT
44#define	_COMPONENT      ACPI_TABLES
45
46static char acpi_osname[128];
47TUNABLE_STR("hw.acpi.osname", acpi_osname, sizeof(acpi_osname));
48
49ACPI_STATUS
50AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES *InitVal,
51    ACPI_STRING *NewVal)
52{
53
54	if (InitVal == NULL || NewVal == NULL)
55		return (AE_BAD_PARAMETER);
56
57	*NewVal = NULL;
58	if (ACPI_COMPARE_NAME(InitVal->Name, "_OS_") &&
59	    InitVal->Type == ACPI_TYPE_STRING && strlen(acpi_osname) > 0) {
60		printf("ACPI: Overriding _OS definition with \"%s\"\n",
61		    acpi_osname);
62		*NewVal = acpi_osname;
63	}
64	return (AE_OK);
65}
66
67ACPI_STATUS
68AcpiOsTableOverride(ACPI_TABLE_HEADER *ExistingTable,
69    ACPI_TABLE_HEADER **NewTable)
70{
71	char modname[] = "acpi_dsdt";
72	caddr_t acpi_table;
73	ACPI_TABLE_HEADER *hdr;
74	size_t sz;
75
76	if (ExistingTable == NULL || NewTable == NULL)
77		return (AE_BAD_PARAMETER);
78
79	*NewTable = NULL;
80	if (!ACPI_COMPARE_NAME(ExistingTable->Signature, ACPI_SIG_DSDT))
81#ifdef notyet
82		for (int i = 0; i < ACPI_NAME_SIZE; i++)
83			modname[i + 5] = tolower(ExistingTable->Signature[i]);
84#else
85		return (AE_SUPPORT);
86#endif
87	acpi_table = preload_search_by_type(modname);
88	if (acpi_table == NULL)
89		return (AE_NOT_FOUND);
90	hdr = preload_fetch_addr(acpi_table);
91	sz = preload_fetch_size(acpi_table);
92	if (hdr == NULL || sz == 0)
93		return (AE_ERROR);
94#ifndef notyet
95	/* Assume SSDT is installed with DSDT. */
96	AcpiGbl_DisableSsdtTableInstall = TRUE;
97#endif
98	*NewTable = hdr;
99	return (AE_OK);
100}
101
102ACPI_STATUS
103AcpiOsPhysicalTableOverride(ACPI_TABLE_HEADER *ExistingTable,
104    ACPI_PHYSICAL_ADDRESS *NewAddress, UINT32 *NewTableLength)
105{
106
107	return (AE_SUPPORT);
108}
109