acpi_util.c revision 1.4.2.2
1 1.4.2.2 uebayasi /* $NetBSD: acpi_util.c,v 1.4.2.2 2010/04/30 14:43:06 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 1.4.2.2 2010/04/30 14:43:06 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 1.4.2.2 uebayasi /* 79 1.4.2.2 uebayasi * Evaluate an integer object. 80 1.4.2.2 uebayasi */ 81 1.4.2.2 uebayasi ACPI_STATUS 82 1.4.2.2 uebayasi acpi_eval_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER *valp) 83 1.4.2.2 uebayasi { 84 1.4.2.2 uebayasi ACPI_OBJECT obj; 85 1.4.2.2 uebayasi ACPI_BUFFER buf; 86 1.4.2.2 uebayasi ACPI_STATUS rv; 87 1.4.2.2 uebayasi 88 1.4.2.2 uebayasi if (handle == NULL) 89 1.4.2.2 uebayasi handle = ACPI_ROOT_OBJECT; 90 1.4.2.2 uebayasi 91 1.4.2.2 uebayasi buf.Pointer = &obj; 92 1.4.2.2 uebayasi buf.Length = sizeof(obj); 93 1.4.2.2 uebayasi 94 1.4.2.2 uebayasi rv = AcpiEvaluateObject(handle, path, NULL, &buf); 95 1.4.2.2 uebayasi 96 1.4.2.2 uebayasi if (ACPI_FAILURE(rv)) 97 1.4.2.2 uebayasi return rv; 98 1.4.2.2 uebayasi 99 1.4.2.2 uebayasi if (obj.Type != ACPI_TYPE_INTEGER) 100 1.4.2.2 uebayasi return AE_TYPE; 101 1.4.2.2 uebayasi 102 1.4.2.2 uebayasi if (valp != NULL) 103 1.4.2.2 uebayasi *valp = obj.Integer.Value; 104 1.4.2.2 uebayasi 105 1.4.2.2 uebayasi return AE_OK; 106 1.4.2.2 uebayasi } 107 1.4.2.2 uebayasi 108 1.4.2.2 uebayasi /* 109 1.4.2.2 uebayasi * Evaluate an integer object with a single integer input parameter. 110 1.4.2.2 uebayasi */ 111 1.4.2.2 uebayasi ACPI_STATUS 112 1.4.2.2 uebayasi acpi_eval_set_integer(ACPI_HANDLE handle, const char *path, ACPI_INTEGER val) 113 1.4.2.2 uebayasi { 114 1.4.2.2 uebayasi ACPI_OBJECT_LIST arg; 115 1.4.2.2 uebayasi ACPI_OBJECT obj; 116 1.4.2.2 uebayasi 117 1.4.2.2 uebayasi if (handle == NULL) 118 1.4.2.2 uebayasi handle = ACPI_ROOT_OBJECT; 119 1.4.2.2 uebayasi 120 1.4.2.2 uebayasi obj.Type = ACPI_TYPE_INTEGER; 121 1.4.2.2 uebayasi obj.Integer.Value = val; 122 1.4.2.2 uebayasi 123 1.4.2.2 uebayasi arg.Count = 1; 124 1.4.2.2 uebayasi arg.Pointer = &obj; 125 1.4.2.2 uebayasi 126 1.4.2.2 uebayasi return AcpiEvaluateObject(handle, path, &arg, NULL); 127 1.4.2.2 uebayasi } 128 1.4.2.2 uebayasi 129 1.4.2.2 uebayasi /* 130 1.4.2.2 uebayasi * Evaluate a (Unicode) string object. 131 1.4.2.2 uebayasi */ 132 1.4.2.2 uebayasi ACPI_STATUS 133 1.4.2.2 uebayasi acpi_eval_string(ACPI_HANDLE handle, const char *path, char **stringp) 134 1.4.2.2 uebayasi { 135 1.4.2.2 uebayasi ACPI_OBJECT *obj; 136 1.4.2.2 uebayasi ACPI_BUFFER buf; 137 1.4.2.2 uebayasi ACPI_STATUS rv; 138 1.4.2.2 uebayasi 139 1.4.2.2 uebayasi rv = acpi_eval_struct(handle, path, &buf); 140 1.4.2.2 uebayasi 141 1.4.2.2 uebayasi if (ACPI_FAILURE(rv)) 142 1.4.2.2 uebayasi return rv; 143 1.4.2.2 uebayasi 144 1.4.2.2 uebayasi obj = buf.Pointer; 145 1.4.2.2 uebayasi 146 1.4.2.2 uebayasi if (obj->Type != ACPI_TYPE_STRING) { 147 1.4.2.2 uebayasi rv = AE_TYPE; 148 1.4.2.2 uebayasi goto out; 149 1.4.2.2 uebayasi } 150 1.4.2.2 uebayasi 151 1.4.2.2 uebayasi if (obj->String.Length == 0) { 152 1.4.2.2 uebayasi rv = AE_BAD_DATA; 153 1.4.2.2 uebayasi goto out; 154 1.4.2.2 uebayasi } 155 1.4.2.2 uebayasi 156 1.4.2.2 uebayasi *stringp = ACPI_ALLOCATE(obj->String.Length + 1); 157 1.4.2.2 uebayasi 158 1.4.2.2 uebayasi if (*stringp == NULL) { 159 1.4.2.2 uebayasi rv = AE_NO_MEMORY; 160 1.4.2.2 uebayasi goto out; 161 1.4.2.2 uebayasi } 162 1.4.2.2 uebayasi 163 1.4.2.2 uebayasi (void)memcpy(*stringp, obj->String.Pointer, obj->String.Length); 164 1.4.2.2 uebayasi 165 1.4.2.2 uebayasi (*stringp)[obj->String.Length] = '\0'; 166 1.4.2.2 uebayasi 167 1.4.2.2 uebayasi out: 168 1.4.2.2 uebayasi ACPI_FREE(buf.Pointer); 169 1.4.2.2 uebayasi 170 1.4.2.2 uebayasi return rv; 171 1.4.2.2 uebayasi } 172 1.4.2.2 uebayasi 173 1.4.2.2 uebayasi /* 174 1.4.2.2 uebayasi * Evaluate a structure. Caller must free buf.Pointer by ACPI_FREE(). 175 1.4.2.2 uebayasi */ 176 1.4.2.2 uebayasi ACPI_STATUS 177 1.4.2.2 uebayasi acpi_eval_struct(ACPI_HANDLE handle, const char *path, ACPI_BUFFER *buf) 178 1.4.2.2 uebayasi { 179 1.4.2.2 uebayasi 180 1.4.2.2 uebayasi if (handle == NULL) 181 1.4.2.2 uebayasi handle = ACPI_ROOT_OBJECT; 182 1.4.2.2 uebayasi 183 1.4.2.2 uebayasi buf->Pointer = NULL; 184 1.4.2.2 uebayasi buf->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 185 1.4.2.2 uebayasi 186 1.4.2.2 uebayasi return AcpiEvaluateObject(handle, path, NULL, buf); 187 1.4.2.2 uebayasi } 188 1.4.2.2 uebayasi 189 1.4.2.2 uebayasi /* 190 1.4.2.2 uebayasi * Evaluate a reference handle from an element in a package. 191 1.4.2.2 uebayasi */ 192 1.4.2.2 uebayasi ACPI_STATUS 193 1.4.2.2 uebayasi acpi_eval_reference_handle(ACPI_OBJECT *elm, ACPI_HANDLE *handle) 194 1.4.2.2 uebayasi { 195 1.4.2.2 uebayasi 196 1.4.2.2 uebayasi if (elm == NULL || handle == NULL) 197 1.4.2.2 uebayasi return AE_BAD_PARAMETER; 198 1.4.2.2 uebayasi 199 1.4.2.2 uebayasi switch (elm->Type) { 200 1.4.2.2 uebayasi 201 1.4.2.2 uebayasi case ACPI_TYPE_ANY: 202 1.4.2.2 uebayasi case ACPI_TYPE_LOCAL_REFERENCE: 203 1.4.2.2 uebayasi 204 1.4.2.2 uebayasi if (elm->Reference.Handle == NULL) 205 1.4.2.2 uebayasi return AE_NULL_ENTRY; 206 1.4.2.2 uebayasi 207 1.4.2.2 uebayasi *handle = elm->Reference.Handle; 208 1.4.2.2 uebayasi 209 1.4.2.2 uebayasi return AE_OK; 210 1.4.2.2 uebayasi 211 1.4.2.2 uebayasi case ACPI_TYPE_STRING: 212 1.4.2.2 uebayasi return AcpiGetHandle(NULL, elm->String.Pointer, handle); 213 1.4.2.2 uebayasi 214 1.4.2.2 uebayasi default: 215 1.4.2.2 uebayasi return AE_TYPE; 216 1.4.2.2 uebayasi } 217 1.4.2.2 uebayasi } 218 1.4.2.2 uebayasi 219 1.4.2.2 uebayasi /* 220 1.4.2.2 uebayasi * Iterate over all objects in a package, and pass them all 221 1.4.2.2 uebayasi * to a function. If the called function returns non-AE_OK, 222 1.4.2.2 uebayasi * the iteration is stopped and that value is returned. 223 1.4.2.2 uebayasi */ 224 1.4.2.2 uebayasi ACPI_STATUS 225 1.4.2.2 uebayasi acpi_foreach_package_object(ACPI_OBJECT *pkg, 226 1.4.2.2 uebayasi ACPI_STATUS (*func)(ACPI_OBJECT *, void *), void *arg) 227 1.4.2.2 uebayasi { 228 1.4.2.2 uebayasi ACPI_STATUS rv = AE_OK; 229 1.4.2.2 uebayasi uint32_t i; 230 1.4.2.2 uebayasi 231 1.4.2.2 uebayasi if (pkg == NULL) 232 1.4.2.2 uebayasi return AE_BAD_PARAMETER; 233 1.4.2.2 uebayasi 234 1.4.2.2 uebayasi if (pkg->Type != ACPI_TYPE_PACKAGE) 235 1.4.2.2 uebayasi return AE_TYPE; 236 1.4.2.2 uebayasi 237 1.4.2.2 uebayasi for (i = 0; i < pkg->Package.Count; i++) { 238 1.4.2.2 uebayasi 239 1.4.2.2 uebayasi rv = (*func)(&pkg->Package.Elements[i], arg); 240 1.4.2.2 uebayasi 241 1.4.2.2 uebayasi if (ACPI_FAILURE(rv)) 242 1.4.2.2 uebayasi break; 243 1.4.2.2 uebayasi } 244 1.4.2.2 uebayasi 245 1.4.2.2 uebayasi return rv; 246 1.4.2.2 uebayasi } 247 1.4.2.2 uebayasi 248 1.4.2.2 uebayasi /* 249 1.4.2.2 uebayasi * Fetch data info the specified (empty) ACPI buffer. 250 1.4.2.2 uebayasi * Caller must free buf.Pointer by ACPI_FREE(). 251 1.4.2.2 uebayasi */ 252 1.4.2.2 uebayasi ACPI_STATUS 253 1.4.2.2 uebayasi acpi_get(ACPI_HANDLE handle, ACPI_BUFFER *buf, 254 1.4.2.2 uebayasi ACPI_STATUS (*getit)(ACPI_HANDLE, ACPI_BUFFER *)) 255 1.4.2.2 uebayasi { 256 1.4.2.2 uebayasi 257 1.4.2.2 uebayasi buf->Pointer = NULL; 258 1.4.2.2 uebayasi buf->Length = ACPI_ALLOCATE_LOCAL_BUFFER; 259 1.4.2.2 uebayasi 260 1.4.2.2 uebayasi return (*getit)(handle, buf); 261 1.4.2.2 uebayasi } 262 1.4.2.2 uebayasi 263 1.4.2.2 uebayasi /* 264 1.4.2.2 uebayasi * Get a device node from a handle. 265 1.4.2.2 uebayasi */ 266 1.4.2.2 uebayasi struct acpi_devnode * 267 1.4.2.2 uebayasi acpi_get_node(ACPI_HANDLE handle) 268 1.4.2.2 uebayasi { 269 1.4.2.2 uebayasi struct acpi_softc *sc = acpi_softc; /* XXX. */ 270 1.4.2.2 uebayasi struct acpi_devnode *ad; 271 1.4.2.2 uebayasi 272 1.4.2.2 uebayasi if (sc == NULL || handle == NULL) 273 1.4.2.2 uebayasi return NULL; 274 1.4.2.2 uebayasi 275 1.4.2.2 uebayasi SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 276 1.4.2.2 uebayasi 277 1.4.2.2 uebayasi if (ad->ad_handle == handle) 278 1.4.2.2 uebayasi return ad; 279 1.4.2.2 uebayasi } 280 1.4.2.2 uebayasi 281 1.4.2.2 uebayasi aprint_debug_dev(sc->sc_dev, "%s: failed to " 282 1.4.2.2 uebayasi "find node %s\n", __func__, acpi_name(handle)); 283 1.4.2.2 uebayasi 284 1.4.2.2 uebayasi return NULL; 285 1.4.2.2 uebayasi } 286 1.4.2.2 uebayasi 287 1.4.2.2 uebayasi /* 288 1.4.2.2 uebayasi * Return a complete pathname from a handle. 289 1.4.2.2 uebayasi * 290 1.4.2.2 uebayasi * Note that the function uses static data storage; 291 1.4.2.2 uebayasi * if the data is needed for future use, it should be 292 1.4.2.2 uebayasi * copied before any subsequent calls overwrite it. 293 1.4.2.2 uebayasi */ 294 1.4.2.2 uebayasi const char * 295 1.4.2.2 uebayasi acpi_name(ACPI_HANDLE handle) 296 1.4.2.2 uebayasi { 297 1.4.2.2 uebayasi static char name[80]; 298 1.4.2.2 uebayasi ACPI_BUFFER buf; 299 1.4.2.2 uebayasi ACPI_STATUS rv; 300 1.4.2.2 uebayasi 301 1.4.2.2 uebayasi if (handle == NULL) 302 1.4.2.2 uebayasi handle = ACPI_ROOT_OBJECT; 303 1.4.2.2 uebayasi 304 1.4.2.2 uebayasi buf.Pointer = name; 305 1.4.2.2 uebayasi buf.Length = sizeof(name); 306 1.4.2.2 uebayasi 307 1.4.2.2 uebayasi rv = AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf); 308 1.4.2.2 uebayasi 309 1.4.2.2 uebayasi if (ACPI_FAILURE(rv)) 310 1.4.2.2 uebayasi return "UNKNOWN"; 311 1.4.2.2 uebayasi 312 1.4.2.2 uebayasi return name; 313 1.4.2.2 uebayasi } 314 1.4.2.2 uebayasi 315 1.4.2.2 uebayasi /* 316 1.4.2.2 uebayasi * Match given IDs against _HID and _CIDs. 317 1.4.2.2 uebayasi */ 318 1.4.2.2 uebayasi int 319 1.4.2.2 uebayasi acpi_match_hid(ACPI_DEVICE_INFO *ad, const char * const *ids) 320 1.4.2.2 uebayasi { 321 1.4.2.2 uebayasi uint32_t i, n; 322 1.4.2.2 uebayasi char *id; 323 1.4.2.2 uebayasi 324 1.4.2.2 uebayasi while (*ids) { 325 1.4.2.2 uebayasi 326 1.4.2.2 uebayasi if ((ad->Valid & ACPI_VALID_HID) != 0) { 327 1.4.2.2 uebayasi 328 1.4.2.2 uebayasi if (pmatch(ad->HardwareId.String, *ids, NULL) == 2) 329 1.4.2.2 uebayasi return 1; 330 1.4.2.2 uebayasi } 331 1.4.2.2 uebayasi 332 1.4.2.2 uebayasi if ((ad->Valid & ACPI_VALID_CID) != 0) { 333 1.4.2.2 uebayasi 334 1.4.2.2 uebayasi n = ad->CompatibleIdList.Count; 335 1.4.2.2 uebayasi 336 1.4.2.2 uebayasi for (i = 0; i < n; i++) { 337 1.4.2.2 uebayasi 338 1.4.2.2 uebayasi id = ad->CompatibleIdList.Ids[i].String; 339 1.4.2.2 uebayasi 340 1.4.2.2 uebayasi if (pmatch(id, *ids, NULL) == 2) 341 1.4.2.2 uebayasi return 1; 342 1.4.2.2 uebayasi } 343 1.4.2.2 uebayasi } 344 1.4.2.2 uebayasi 345 1.4.2.2 uebayasi ids++; 346 1.4.2.2 uebayasi } 347 1.4.2.2 uebayasi 348 1.4.2.2 uebayasi return 0; 349 1.4.2.2 uebayasi } 350 1.4.2.2 uebayasi 351
Indexes created Mon Sep 29 21:09:56 GMT 2025