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