1 /*- 2 * Copyright (c) 2003 Nate Lawson 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 #include <sys/param.h> 28 #include <sys/kernel.h> 29 #include <sys/bus.h> 30 #include <sys/sbuf.h> 31 32 #include <machine/bus.h> 33 #include <machine/resource.h> 34 #include <sys/rman.h> 35 36 #include <contrib/dev/acpica/include/acpi.h> 37 38 #include <dev/acpica/acpivar.h> 39 40 /* 41 * Package manipulation convenience functions 42 */ 43 44 int 45 acpi_PkgInt(ACPI_OBJECT *res, int idx, UINT64 *dst) 46 { 47 ACPI_OBJECT *obj; 48 49 obj = &res->Package.Elements[idx]; 50 if (obj->Type != ACPI_TYPE_INTEGER) 51 return (EINVAL); 52 *dst = obj->Integer.Value; 53 54 return (0); 55 } 56 57 int 58 acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst) 59 { 60 UINT64 tmp; 61 int error; 62 63 error = acpi_PkgInt(res, idx, &tmp); 64 if (error == 0) 65 *dst = (uint32_t)tmp; 66 67 return (error); 68 } 69 70 int 71 acpi_PkgInt16(ACPI_OBJECT *res, int idx, uint16_t *dst) 72 { 73 UINT64 tmp; 74 int error; 75 76 error = acpi_PkgInt(res, idx, &tmp); 77 if (error == 0) 78 *dst = (uint16_t)tmp; 79 80 return (error); 81 } 82 83 int 84 acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size) 85 { 86 ACPI_OBJECT *obj; 87 void *ptr; 88 size_t length; 89 90 obj = &res->Package.Elements[idx]; 91 if (obj == NULL) 92 return (EINVAL); 93 94 switch (obj->Type) { 95 case ACPI_TYPE_STRING: 96 ptr = obj->String.Pointer; 97 length = obj->String.Length; 98 break; 99 case ACPI_TYPE_BUFFER: 100 ptr = obj->Buffer.Pointer; 101 length = obj->Buffer.Length; 102 break; 103 default: 104 return (EINVAL); 105 } 106 107 /* Make sure string will fit, including terminating NUL */ 108 if (++length > size) 109 return (E2BIG); 110 111 strlcpy(dst, ptr, length); 112 return (0); 113 } 114 115 int 116 acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *type, int *rid, 117 struct resource **dst, u_int flags) 118 { 119 ACPI_GENERIC_ADDRESS gas; 120 ACPI_OBJECT *obj; 121 122 obj = &res->Package.Elements[idx]; 123 if (obj == NULL || obj->Type != ACPI_TYPE_BUFFER || 124 obj->Buffer.Length < sizeof(ACPI_GENERIC_ADDRESS) + 3) 125 return (EINVAL); 126 127 memcpy(&gas, obj->Buffer.Pointer + 3, sizeof(gas)); 128 129 return (acpi_bus_alloc_gas(dev, type, rid, &gas, dst, flags)); 130 } 131 132 int 133 acpi_PkgFFH_IntelCpu(ACPI_OBJECT *res, int idx, int *vendor, int *class, 134 uint64_t *address, int *accsize) 135 { 136 ACPI_GENERIC_ADDRESS gas; 137 ACPI_OBJECT *obj; 138 139 obj = &res->Package.Elements[idx]; 140 if (obj == NULL || obj->Type != ACPI_TYPE_BUFFER || 141 obj->Buffer.Length < sizeof(ACPI_GENERIC_ADDRESS) + 3) 142 return (EINVAL); 143 144 memcpy(&gas, obj->Buffer.Pointer + 3, sizeof(gas)); 145 if (gas.SpaceId != ACPI_ADR_SPACE_FIXED_HARDWARE) 146 return (ERESTART); 147 *vendor = gas.BitWidth; 148 *class = gas.BitOffset; 149 *address = gas.Address; 150 *accsize = gas.AccessWidth; 151 return (0); 152 } 153 154 ACPI_HANDLE 155 acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj) 156 { 157 ACPI_HANDLE h; 158 159 if (obj == NULL) 160 return (NULL); 161 162 switch (obj->Type) { 163 case ACPI_TYPE_LOCAL_REFERENCE: 164 case ACPI_TYPE_ANY: 165 h = obj->Reference.Handle; 166 break; 167 case ACPI_TYPE_STRING: 168 /* 169 * The String object usually contains a fully-qualified path, so 170 * scope can be NULL. 171 * 172 * XXX This may not always be the case. 173 */ 174 if (ACPI_FAILURE(AcpiGetHandle(scope, obj->String.Pointer, &h))) 175 h = NULL; 176 break; 177 default: 178 h = NULL; 179 break; 180 } 181 182 return (h); 183 } 184