acpi_util.c revision 1.4.2.3
1 1.4.2.2 uebayasi /* $NetBSD: acpi_util.c,v 1.4.2.3 2010/08/17 06:46:00 uebayasi Exp $ */ 2 1.4.2.2 uebayasi 3 1.4.2.2 uebayasi /*- 4 1.4.2.2 uebayasi * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. 5 1.4.2.2 uebayasi * All rights reserved. 6 1.4.2.2 uebayasi * 7 1.4.2.2 uebayasi * This code is derived from software contributed to The NetBSD Foundation 8 1.4.2.2 uebayasi * by Charles M. Hannum of By Noon Software, Inc. 9 1.4.2.2 uebayasi * 10 1.4.2.2 uebayasi * Redistribution and use in source and binary forms, with or without 11 1.4.2.2 uebayasi * modification, are permitted provided that the following conditions 12 1.4.2.2 uebayasi * are met: 13 1.4.2.2 uebayasi * 1. Redistributions of source code must retain the above copyright 14 1.4.2.2 uebayasi * notice, this list of conditions and the following disclaimer. 15 1.4.2.2 uebayasi * 2. Redistributions in binary form must reproduce the above copyright 16 1.4.2.2 uebayasi * notice, this list of conditions and the following disclaimer in the 17 1.4.2.2 uebayasi * documentation and/or other materials provided with the distribution. 18 1.4.2.2 uebayasi * 19 1.4.2.2 uebayasi * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.4.2.2 uebayasi * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.4.2.2 uebayasi * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.4.2.2 uebayasi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.4.2.2 uebayasi * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.4.2.2 uebayasi * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.4.2.2 uebayasi * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.4.2.2 uebayasi * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.4.2.2 uebayasi * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.4.2.2 uebayasi * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.4.2.2 uebayasi * POSSIBILITY OF SUCH DAMAGE. 30 1.4.2.2 uebayasi */ 31 1.4.2.2 uebayasi 32 1.4.2.2 uebayasi /* 33 1.4.2.2 uebayasi * Copyright 2001, 2003 Wasabi Systems, Inc. 34 1.4.2.2 uebayasi * All rights reserved. 35 1.4.2.2 uebayasi * 36 1.4.2.2 uebayasi * Written by Jason R. Thorpe for Wasabi Systems, Inc. 37 1.4.2.2 uebayasi * 38 1.4.2.2 uebayasi * Redistribution and use in source and binary forms, with or without 39 1.4.2.2 uebayasi * modification, are permitted provided that the following conditions 40 1.4.2.2 uebayasi * are met: 41 1.4.2.2 uebayasi * 1. Redistributions of source code must retain the above copyright 42 1.4.2.2 uebayasi * notice, this list of conditions and the following disclaimer. 43 1.4.2.2 uebayasi * 2. Redistributions in binary form must reproduce the above copyright 44 1.4.2.2 uebayasi * notice, this list of conditions and the following disclaimer in the 45 1.4.2.2 uebayasi * documentation and/or other materials provided with the distribution. 46 1.4.2.2 uebayasi * 3. All advertising materials mentioning features or use of this software 47 1.4.2.2 uebayasi * must display the following acknowledgement: 48 1.4.2.2 uebayasi * This product includes software developed for the NetBSD Project by 49 1.4.2.2 uebayasi * Wasabi Systems, Inc. 50 1.4.2.2 uebayasi * 4. The name of Wasabi Systems, Inc. may not be used to endorse 51 1.4.2.2 uebayasi * or promote products derived from this software without specific prior 52 1.4.2.2 uebayasi * written permission. 53 1.4.2.2 uebayasi * 54 1.4.2.2 uebayasi * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 55 1.4.2.2 uebayasi * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 56 1.4.2.2 uebayasi * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 57 1.4.2.2 uebayasi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 58 1.4.2.2 uebayasi * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 59 1.4.2.2 uebayasi * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 60 1.4.2.2 uebayasi * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 61 1.4.2.2 uebayasi * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 62 1.4.2.2 uebayasi * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 63 1.4.2.2 uebayasi * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 1.4.2.2 uebayasi * POSSIBILITY OF SUCH DAMAGE. 65 1.4.2.2 uebayasi */ 66 1.4.2.2 uebayasi 67 1.4.2.2 uebayasi #include <sys/cdefs.h> 68 1.4.2.2 uebayasi __KERNEL_RCSID(0, "$NetBSD: acpi_util.c,v 1.4.2.3 2010/08/17 06:46:00 uebayasi Exp $"); 69 1.4.2.2 uebayasi 70 1.4.2.2 uebayasi #include <sys/param.h> 71 1.4.2.2 uebayasi 72 1.4.2.2 uebayasi #include <dev/acpi/acpireg.h> 73 1.4.2.2 uebayasi #include <dev/acpi/acpivar.h> 74 1.4.2.2 uebayasi 75 1.4.2.2 uebayasi #define _COMPONENT ACPI_BUS_COMPONENT 76 1.4.2.2 uebayasi ACPI_MODULE_NAME ("acpi_util") 77 1.4.2.2 uebayasi 78 1.4.2.3 uebayasi static void acpi_clean_node(ACPI_HANDLE, void *); 79 1.4.2.3 uebayasi 80 1.4.2.2 uebayasi /* 81 1.4.2.2 uebayasi * Evaluate an integer object. 82 1.4.2.2 uebayasi */ 83 1.4.2.2 uebayasi ACPI_STATUS 84 1.4.2.2 uebayasi acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 85 1.4.2.2 uebayasi { 86 1.4.2.2 uebayasi ACPI_OBJECT obj; 87 1.4.2.2 uebayasi ACPI_BUFFER buf; 88 1.4.2.2 uebayasi ACPI_STATUS rv; 89 1.4.2.2 uebayasi 90 1.4.2.2 uebayasi if (handle == NULL) 91 1.4.2.2 uebayasi handle = ACPI_ROOT_OBJECT; 92 1.4.2.2 uebayasi 93 1.4.2.2 uebayasi buf.Pointer = &obj; 94 1.4.2.2 uebayasi buf.Length = sizeof(obj); 95 1.4.2.2 uebayasi 96 1.4.2.2 uebayasi rv = AcpiEvaluateObject(handle, path, NULL, &buf); 97 1.4.2.2 uebayasi 98 1.4.2.2 uebayasi if (ACPI_FAILURE(rv)) 99 1.4.2.2 uebayasi return rv; 100 1.4.2.2 uebayasi 101 1.4.2.2 uebayasi if (obj.Type != ACPI_TYPE_INTEGER) 102 1.4.2.2 uebayasi return AE_TYPE; 103 1.4.2.2 uebayasi 104 1.4.2.2 uebayasi if (valp != NULL) 105 1.4.2.2 uebayasi *valp = obj.Integer.Value; 106 1.4.2.2 uebayasi 107 1.4.2.2 uebayasi return AE_OK; 108 1.4.2.2 uebayasi } 109 1.4.2.2 uebayasi 110 1.4.2.2 uebayasi /* 111 1.4.2.2 uebayasi * Evaluate an integer object with a single integer input parameter. 112 1.4.2.2 uebayasi */ 113 1.4.2.2 uebayasi ACPI_STATUS 114 1.4.2.2 uebayasi acpi_eval_set_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER val) 115 1.4.2.2 uebayasi { 116 1.4.2.2 uebayasi ACPI_OBJECT_LIST arg; 117 1.4.2.2 uebayasi ACPI_OBJECT obj; 118 1.4.2.2 uebayasi 119 1.4.2.2 uebayasi if (handle == NULL) 120 1.4.2.2 uebayasi handle = ACPI_ROOT_OBJECT; 121 1.4.2.2 uebayasi 122 1.4.2.2 uebayasi obj.Type = ACPI_TYPE_INTEGER; 123 1.4.2.2 uebayasi obj.Integer.Value = val; 124 1.4.2.2 uebayasi 125 1.4.2.2 uebayasi arg.Count = 1; 126 1.4.2.2 uebayasi arg.Pointer = &obj; 127 1.4.2.2 uebayasi 128 1.4.2.2 uebayasi return AcpiEvaluateObject(handle, path, &arg, NULL); 129 1.4.2.2 uebayasi } 130 1.4.2.2 uebayasi 131 1.4.2.2 uebayasi /* 132 1.4.2.2 uebayasi * Evaluate a (Unicode) string object. 133 1.4.2.2 uebayasi */ 134 1.4.2.2 uebayasi ACPI_STATUS 135 1.4.2.2 uebayasi acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 136 1.4.2.2 uebayasi { 137 1.4.2.2 uebayasi ACPI_OBJECT *obj; 138 1.4.2.2 uebayasi ACPI_BUFFER buf; 139 1.4.2.2 uebayasi ACPI_STATUS rv; 140 1.4.2.2 uebayasi 141 1.4.2.2 uebayasi rv = acpi_eval_struct(handle, path, &buf); 142 1.4.2.2 uebayasi 143 1.4.2.2 uebayasi if (ACPI_FAILURE(rv)) 144 1.4.2.2 uebayasi return rv; 145 1.4.2.2 uebayasi 146 1.4.2.2 uebayasi obj = buf.Pointer; 147 1.4.2.2 uebayasi 148 1.4.2.2 uebayasi if (obj->Type != ACPI_TYPE_STRING) { 149 1.4.2.2 uebayasi rv = AE_TYPE; 150 1.4.2.2 uebayasi goto out; 151 1.4.2.2 uebayasi } 152 1.4.2.2 uebayasi 153 1.4.2.2 uebayasi if (obj->String.Length == 0) { 154 1.4.2.2 uebayasi rv = AE_BAD_DATA; 155 1.4.2.2 uebayasi goto out; 156 1.4.2.2 uebayasi } 157 1.4.2.2 uebayasi 158 1.4.2.2 uebayasi *stringp = ACPI_ALLOCATE(obj->String.Length + 1); 159 1.4.2.2 uebayasi 160 1.4.2.2 uebayasi if (*stringp == NULL) { 161 1.4.2.2 uebayasi rv = AE_NO_MEMORY; 162 1.4.2.2 uebayasi goto out; 163 1.4.2.2 uebayasi } 164 1.4.2.2 uebayasi 165 1.4.2.2 uebayasi (void)memcpy(*stringp, obj->String.Pointer, obj->String.Length); 166 1.4.2.2 uebayasi 167 1.4.2.2 uebayasi (*stringp)[obj->String.Length] = '\0'; 168 1.4.2.2 uebayasi 169 1.4.2.2 uebayasi out: 170 1.4.2.2 uebayasi ACPI_FREE(buf.Pointer); 171 1.4.2.2 uebayasi 172 1.4.2.2 uebayasi return rv; 173 1.4.2.2 uebayasi } 174 1.4.2.2 uebayasi 175 1.4.2.2 uebayasi /* 176 1.4.2.2 uebayasi * Evaluate a structure. Caller must free buf.Pointer by ACPI_FREE(). 177 1.4.2.2 uebayasi */ 178 1.4.2.2 uebayasi ACPI_STATUS 179 1.4.2.2 uebayasi acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *buf) 180 1.4.2.2 uebayasi { 181 1.4.2.2 uebayasi 182 1.4.2.2 uebayasi if (handle == NULL) 183 1.4.2.2 uebayasi handle = ACPI_ROOT_OBJECT; 184 1.4.2.2 uebayasi 185 1.4.2.2 uebayasi buf->Pointer = NULL; 186 1.4.2.2 uebayasi buf->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 187 1.4.2.2 uebayasi 188 1.4.2.2 uebayasi return AcpiEvaluateObject(handle, path, NULL, buf); 189 1.4.2.2 uebayasi } 190 1.4.2.2 uebayasi 191 1.4.2.2 uebayasi /* 192 1.4.2.2 uebayasi * Evaluate a reference handle from an element in a package. 193 1.4.2.2 uebayasi */ 194 1.4.2.2 uebayasi ACPI_STATUS 195 1.4.2.2 uebayasi acpi_eval_reference_handle(ACPI_OBJECT *elm, ACPI_HANDLE *handle) 196 1.4.2.2 uebayasi { 197 1.4.2.2 uebayasi 198 1.4.2.2 uebayasi if (elm == NULL || handle == NULL) 199 1.4.2.2 uebayasi return AE_BAD_PARAMETER; 200 1.4.2.2 uebayasi 201 1.4.2.2 uebayasi switch (elm->Type) { 202 1.4.2.2 uebayasi 203 1.4.2.2 uebayasi case ACPI_TYPE_ANY: 204 1.4.2.2 uebayasi case ACPI_TYPE_LOCAL_REFERENCE: 205 1.4.2.2 uebayasi 206 1.4.2.2 uebayasi if (elm->Reference.Handle == NULL) 207 1.4.2.2 uebayasi return AE_NULL_ENTRY; 208 1.4.2.2 uebayasi 209 1.4.2.2 uebayasi *handle = elm->Reference.Handle; 210 1.4.2.2 uebayasi 211 1.4.2.2 uebayasi return AE_OK; 212 1.4.2.2 uebayasi 213 1.4.2.2 uebayasi case ACPI_TYPE_STRING: 214 1.4.2.2 uebayasi return AcpiGetHandle(NULL, elm->String.Pointer, handle); 215 1.4.2.2 uebayasi 216 1.4.2.2 uebayasi default: 217 1.4.2.2 uebayasi return AE_TYPE; 218 1.4.2.2 uebayasi } 219 1.4.2.2 uebayasi } 220 1.4.2.2 uebayasi 221 1.4.2.2 uebayasi /* 222 1.4.2.2 uebayasi * Iterate over all objects in a package, and pass them all 223 1.4.2.2 uebayasi * to a function. If the called function returns non-AE_OK, 224 1.4.2.2 uebayasi * the iteration is stopped and that value is returned. 225 1.4.2.2 uebayasi */ 226 1.4.2.2 uebayasi ACPI_STATUS 227 1.4.2.2 uebayasi acpi_foreach_package_object(ACPI_OBJECT *pkg, 228 1.4.2.2 uebayasi ACPI_STATUS (*func)(ACPI_OBJECT *, void *), void *arg) 229 1.4.2.2 uebayasi { 230 1.4.2.2 uebayasi ACPI_STATUS rv = AE_OK; 231 1.4.2.2 uebayasi uint32_t i; 232 1.4.2.2 uebayasi 233 1.4.2.2 uebayasi if (pkg == NULL) 234 1.4.2.2 uebayasi return AE_BAD_PARAMETER; 235 1.4.2.2 uebayasi 236 1.4.2.2 uebayasi if (pkg->Type != ACPI_TYPE_PACKAGE) 237 1.4.2.2 uebayasi return AE_TYPE; 238 1.4.2.2 uebayasi 239 1.4.2.2 uebayasi for (i = 0; i < pkg->Package.Count; i++) { 240 1.4.2.2 uebayasi 241 1.4.2.2 uebayasi rv = (*func)(&pkg->Package.Elements[i], arg); 242 1.4.2.2 uebayasi 243 1.4.2.2 uebayasi if (ACPI_FAILURE(rv)) 244 1.4.2.2 uebayasi break; 245 1.4.2.2 uebayasi } 246 1.4.2.2 uebayasi 247 1.4.2.2 uebayasi return rv; 248 1.4.2.2 uebayasi } 249 1.4.2.2 uebayasi 250 1.4.2.2 uebayasi /* 251 1.4.2.2 uebayasi * Fetch data info the specified (empty) ACPI buffer. 252 1.4.2.2 uebayasi * Caller must free buf.Pointer by ACPI_FREE(). 253 1.4.2.2 uebayasi */ 254 1.4.2.2 uebayasi ACPI_STATUS 255 1.4.2.2 uebayasi acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 256 1.4.2.2 uebayasi ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 257 1.4.2.2 uebayasi { 258 1.4.2.2 uebayasi 259 1.4.2.2 uebayasi buf->Pointer = NULL; 260 1.4.2.2 uebayasi buf->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 261 1.4.2.2 uebayasi 262 1.4.2.2 uebayasi return (*getit)(handle, buf); 263 1.4.2.2 uebayasi } 264 1.4.2.2 uebayasi 265 1.4.2.2 uebayasi /* 266 1.4.2.2 uebayasi * Get a device node from a handle. 267 1.4.2.2 uebayasi */ 268 1.4.2.2 uebayasi struct acpi_devnode * 269 1.4.2.2 uebayasi acpi_get_node(ACPI_HANDLE handle) 270 1.4.2.2 uebayasi { 271 1.4.2.2 uebayasi struct acpi_devnode *ad; 272 1.4.2.3 uebayasi ACPI_STATUS rv; 273 1.4.2.2 uebayasi 274 1.4.2.3 uebayasi if (handle == NULL) 275 1.4.2.2 uebayasi return NULL; 276 1.4.2.2 uebayasi 277 1.4.2.3 uebayasi rv = AcpiGetData(handle, acpi_clean_node, (void **)&ad); 278 1.4.2.2 uebayasi 279 1.4.2.3 uebayasi if (ACPI_FAILURE(rv)) 280 1.4.2.3 uebayasi return NULL; 281 1.4.2.3 uebayasi 282 1.4.2.3 uebayasi return ad; 283 1.4.2.3 uebayasi } 284 1.4.2.2 uebayasi 285 1.4.2.3 uebayasi /* 286 1.4.2.3 uebayasi * Associate a device node with a handle. 287 1.4.2.3 uebayasi */ 288 1.4.2.3 uebayasi void 289 1.4.2.3 uebayasi acpi_set_node(struct acpi_devnode *ad) 290 1.4.2.3 uebayasi { 291 1.4.2.2 uebayasi 292 1.4.2.3 uebayasi (void)AcpiAttachData(ad->ad_handle, acpi_clean_node, ad); 293 1.4.2.3 uebayasi } 294 1.4.2.3 uebayasi 295 1.4.2.3 uebayasi static void 296 1.4.2.3 uebayasi acpi_clean_node(ACPI_HANDLE handle, void *aux) 297 1.4.2.3 uebayasi { 298 1.4.2.3 uebayasi /* Nothing. */ 299 1.4.2.2 uebayasi } 300 1.4.2.2 uebayasi 301 1.4.2.2 uebayasi /* 302 1.4.2.2 uebayasi * Return a complete pathname from a handle. 303 1.4.2.2 uebayasi * 304 1.4.2.2 uebayasi * Note that the function uses static data storage; 305 1.4.2.2 uebayasi * if the data is needed for future use, it should be 306 1.4.2.2 uebayasi * copied before any subsequent calls overwrite it. 307 1.4.2.2 uebayasi */ 308 1.4.2.2 uebayasi const char * 309 1.4.2.2 uebayasi acpi_name(ACPI_HANDLE handle) 310 1.4.2.2 uebayasi { 311 1.4.2.2 uebayasi static char name[80]; 312 1.4.2.2 uebayasi ACPI_BUFFER buf; 313 1.4.2.2 uebayasi ACPI_STATUS rv; 314 1.4.2.2 uebayasi 315 1.4.2.2 uebayasi if (handle == NULL) 316 1.4.2.2 uebayasi handle = ACPI_ROOT_OBJECT; 317 1.4.2.2 uebayasi 318 1.4.2.2 uebayasi buf.Pointer = name; 319 1.4.2.2 uebayasi buf.Length = sizeof(name); 320 1.4.2.2 uebayasi 321 1.4.2.2 uebayasi rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 322 1.4.2.2 uebayasi 323 1.4.2.2 uebayasi if (ACPI_FAILURE(rv)) 324 1.4.2.2 uebayasi return "UNKNOWN"; 325 1.4.2.2 uebayasi 326 1.4.2.2 uebayasi return name; 327 1.4.2.2 uebayasi } 328 1.4.2.2 uebayasi 329 1.4.2.2 uebayasi /* 330 1.4.2.2 uebayasi * Match given IDs against _HID and _CIDs. 331 1.4.2.2 uebayasi */ 332 1.4.2.2 uebayasi int 333 1.4.2.2 uebayasi acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 334 1.4.2.2 uebayasi { 335 1.4.2.2 uebayasi uint32_t i, n; 336 1.4.2.2 uebayasi char *id; 337 1.4.2.2 uebayasi 338 1.4.2.2 uebayasi while (*ids) { 339 1.4.2.2 uebayasi 340 1.4.2.2 uebayasi if ((ad->Valid & ACPI_VALID_HID) != 0) { 341 1.4.2.2 uebayasi 342 1.4.2.2 uebayasi if (pmatch(ad->HardwareId.String, *ids, NULL) == 2) 343 1.4.2.2 uebayasi return 1; 344 1.4.2.2 uebayasi } 345 1.4.2.2 uebayasi 346 1.4.2.2 uebayasi if ((ad->Valid & ACPI_VALID_CID) != 0) { 347 1.4.2.2 uebayasi 348 1.4.2.2 uebayasi n = ad->CompatibleIdList.Count; 349 1.4.2.2 uebayasi 350 1.4.2.2 uebayasi for (i = 0; i < n; i++) { 351 1.4.2.2 uebayasi 352 1.4.2.2 uebayasi id = ad->CompatibleIdList.Ids[i].String; 353 1.4.2.2 uebayasi 354 1.4.2.2 uebayasi if (pmatch(id, *ids, NULL) == 2) 355 1.4.2.2 uebayasi return 1; 356 1.4.2.2 uebayasi } 357 1.4.2.2 uebayasi } 358 1.4.2.2 uebayasi 359 1.4.2.2 uebayasi ids++; 360 1.4.2.2 uebayasi } 361 1.4.2.2 uebayasi 362 1.4.2.2 uebayasi return 0; 363 1.4.2.2 uebayasi } 364 1.4.2.2 uebayasi 365
Indexes created Mon Sep 29 21:09:56 GMT 2025