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 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 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 101 AcpiOsPhysicalTableOverride(ACPI_TABLE_HEADER *ExistingTable, 102 ACPI_PHYSICAL_ADDRESS *NewAddress, UINT32 *NewTableLength) 103 { 104 105 return (AE_SUPPORT); 106 } 107