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("$FreeBSD$"); 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 46 static char acpi_osname[128]; 47 TUNABLE_STR("hw.acpi.osname", acpi_osname, sizeof(acpi_osname)); 48 49 ACPI_STATUS 50 AcpiOsPredefinedOverride(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_NAMESEG(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 67 ACPI_STATUS 68 AcpiOsTableOverride(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_NAMESEG(ExistingTable->Signature, ACPI_SIG_DSDT)) 81 #ifdef notyet 82 for (int i = 0; i < ACPI_NAMESEG_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 } 101 102 ACPI_STATUS 103 AcpiOsPhysicalTableOverride(ACPI_TABLE_HEADER *ExistingTable, 104 ACPI_PHYSICAL_ADDRESS *NewAddress, UINT32 *NewTableLength) 105 { 106 107 return (AE_SUPPORT); 108 } 109