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