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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 | /****************************************************************************** * * Module Name: evrgnini- ACPI Address_space (Op_region) init * $Revision: 63 $ * *****************************************************************************/ /* * Copyright (C) 2000 - 2002, R. Byron Moore * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "acpi.h" #include "acevents.h" #include "acnamesp.h" #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME ("evrgnini") /******************************************************************************* * * FUNCTION: Acpi_ev_system_memory_region_setup * * PARAMETERS: Region_obj - Region we are interested in * Function - Start or stop * Handler_context - Address space handler context * Region_context - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling, a nop for now * ******************************************************************************/ acpi_status acpi_ev_system_memory_region_setup ( acpi_handle handle, u32 function, void *handler_context, void **region_context) { acpi_operand_object *region_desc = (acpi_operand_object *) handle; acpi_mem_space_context *local_region_context; ACPI_FUNCTION_TRACE ("Ev_system_memory_region_setup"); if (function == ACPI_REGION_DEACTIVATE) { if (*region_context) { ACPI_MEM_FREE (*region_context); *region_context = NULL; } return_ACPI_STATUS (AE_OK); } /* Create a new context */ local_region_context = ACPI_MEM_CALLOCATE (sizeof (acpi_mem_space_context)); if (!(local_region_context)) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Save the region length and address for use in the handler */ local_region_context->length = region_desc->region.length; local_region_context->address = region_desc->region.address; *region_context = local_region_context; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: Acpi_ev_io_space_region_setup * * PARAMETERS: Region_obj - Region we are interested in * Function - Start or stop * Handler_context - Address space handler context * Region_context - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling * ******************************************************************************/ acpi_status acpi_ev_io_space_region_setup ( acpi_handle handle, u32 function, void *handler_context, void **region_context) { ACPI_FUNCTION_TRACE ("Ev_io_space_region_setup"); if (function == ACPI_REGION_DEACTIVATE) { *region_context = NULL; } else { *region_context = handler_context; } return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: Acpi_ev_pci_config_region_setup * * PARAMETERS: Region_obj - Region we are interested in * Function - Start or stop * Handler_context - Address space handler context * Region_context - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling * * MUTEX: Assumes namespace is not locked * ******************************************************************************/ acpi_status acpi_ev_pci_config_region_setup ( acpi_handle handle, u32 function, void *handler_context, void **region_context) { acpi_status status = AE_OK; acpi_integer temp; acpi_pci_id *pci_id = *region_context; acpi_operand_object *handler_obj; acpi_namespace_node *node; acpi_operand_object *region_obj = (acpi_operand_object *) handle; acpi_device_id object_hID; ACPI_FUNCTION_TRACE ("Ev_pci_config_region_setup"); handler_obj = region_obj->region.addr_handler; if (!handler_obj) { /* * No installed handler. This shouldn't happen because the dispatch * routine checks before we get here, but we check again just in case. */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Attempting to init a region %p, with no handler\n", region_obj)); return_ACPI_STATUS (AE_NOT_EXIST); } if (function == ACPI_REGION_DEACTIVATE) { if (pci_id) { ACPI_MEM_FREE (pci_id); *region_context = NULL; } return_ACPI_STATUS (status); } /* Create a new context */ pci_id = ACPI_MEM_CALLOCATE (sizeof (acpi_pci_id)); if (!pci_id) { return_ACPI_STATUS (AE_NO_MEMORY); } /* * For PCI Config space access, we have to pass the segment, bus, * device and function numbers. This routine must acquire those. */ /* * First get device and function numbers from the _ADR object * in the parent's scope. */ node = acpi_ns_get_parent_node (region_obj->region.node); /* Evaluate the _ADR object */ status = acpi_ut_evaluate_numeric_object (METHOD_NAME__ADR, node, &temp); /* * The default is zero, and since the allocation above zeroed * the data, just do nothing on failure. */ if (ACPI_SUCCESS (status)) { pci_id->device = ACPI_HIWORD (ACPI_LODWORD (temp)); pci_id->function = ACPI_LOWORD (ACPI_LODWORD (temp)); } /* * Get the _SEG and _BBN values from the device upon which the handler * is installed. * * We need to get the _SEG and _BBN objects relative to the PCI BUS device. * This is the device the handler has been registered to handle. */ /* * If the Addr_handler.Node is still pointing to the root, we need * to scan upward for a PCI Root bridge and re-associate the Op_region * handlers with that device. */ if (handler_obj->addr_handler.node == acpi_gbl_root_node) { /* * Node is currently the parent object */ while (node != acpi_gbl_root_node) { status = acpi_ut_execute_HID (node, &object_hID); if (ACPI_SUCCESS (status)) { /* Got a valid _HID, check if this is a PCI root */ if (!(ACPI_STRNCMP (object_hID.buffer, PCI_ROOT_HID_STRING, sizeof (PCI_ROOT_HID_STRING)))) { /* Install a handler for this PCI root bridge */ status = acpi_install_address_space_handler ((acpi_handle) node, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); if (ACPI_FAILURE (status)) { ACPI_REPORT_ERROR (("Could not install Pci_config handler for %4.4s, %s\n", node->name.ascii, acpi_format_exception (status))); } break; } } node = acpi_ns_get_parent_node (node); } } else { node = handler_obj->addr_handler.node; } /* * The PCI segment number comes from the _SEG method */ status = acpi_ut_evaluate_numeric_object (METHOD_NAME__SEG, node, &temp); if (ACPI_SUCCESS (status)) { pci_id->segment = ACPI_LOWORD (temp); } /* * The PCI bus number comes from the _BBN method */ status = acpi_ut_evaluate_numeric_object (METHOD_NAME__BBN, node, &temp); if (ACPI_SUCCESS (status)) { pci_id->bus = ACPI_LOWORD (temp); } *region_context = pci_id; return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: Acpi_ev_pci_bar_region_setup * * PARAMETERS: Region_obj - Region we are interested in * Function - Start or stop * Handler_context - Address space handler context * Region_context - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling * * MUTEX: Assumes namespace is not locked * ******************************************************************************/ acpi_status acpi_ev_pci_bar_region_setup ( acpi_handle handle, u32 function, void *handler_context, void **region_context) { ACPI_FUNCTION_TRACE ("Ev_pci_bar_region_setup"); return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: Acpi_ev_cmos_region_setup * * PARAMETERS: Region_obj - Region we are interested in * Function - Start or stop * Handler_context - Address space handler context * Region_context - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling * * MUTEX: Assumes namespace is not locked * ******************************************************************************/ acpi_status acpi_ev_cmos_region_setup ( acpi_handle handle, u32 function, void *handler_context, void **region_context) { ACPI_FUNCTION_TRACE ("Ev_cmos_region_setup"); return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: Acpi_ev_default_region_setup * * PARAMETERS: Region_obj - Region we are interested in * Function - Start or stop * Handler_context - Address space handler context * Region_context - Region specific context * * RETURN: Status * * DESCRIPTION: Do any prep work for region handling * ******************************************************************************/ acpi_status acpi_ev_default_region_setup ( acpi_handle handle, u32 function, void *handler_context, void **region_context) { ACPI_FUNCTION_TRACE ("Ev_default_region_setup"); if (function == ACPI_REGION_DEACTIVATE) { *region_context = NULL; } else { *region_context = handler_context; } return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: Acpi_ev_initialize_region * * PARAMETERS: Region_obj - Region we are initializing * Acpi_ns_locked - Is namespace locked? * * RETURN: Status * * DESCRIPTION: Initializes the region, finds any _REG methods and saves them * for execution at a later time * * Get the appropriate address space handler for a newly * created region. * * This also performs address space specific intialization. For * example, PCI regions must have an _ADR object that contains * a PCI address in the scope of the definition. This address is * required to perform an access to PCI config space. * ******************************************************************************/ acpi_status acpi_ev_initialize_region ( acpi_operand_object *region_obj, u8 acpi_ns_locked) { acpi_operand_object *handler_obj; acpi_operand_object *obj_desc; ACPI_ADR_SPACE_TYPE space_id; acpi_namespace_node *node; acpi_status status; acpi_namespace_node *method_node; acpi_name *reg_name_ptr = (acpi_name *) METHOD_NAME__REG; acpi_operand_object *region_obj2; ACPI_FUNCTION_TRACE_U32 ("Ev_initialize_region", acpi_ns_locked); if (!region_obj) { return_ACPI_STATUS (AE_BAD_PARAMETER); } if (region_obj->common.flags & AOPOBJ_OBJECT_INITIALIZED) { return_ACPI_STATUS (AE_OK); } region_obj2 = acpi_ns_get_secondary_object (region_obj); if (!region_obj2) { return_ACPI_STATUS (AE_NOT_EXIST); } node = acpi_ns_get_parent_node (region_obj->region.node); space_id = region_obj->region.space_id; region_obj->region.addr_handler = NULL; region_obj2->extra.method_REG = NULL; region_obj->common.flags &= ~(AOPOBJ_SETUP_COMPLETE); region_obj->common.flags |= AOPOBJ_OBJECT_INITIALIZED; /* * Find any "_REG" method associated with this region definition */ status = acpi_ns_search_node (*reg_name_ptr, node, ACPI_TYPE_METHOD, &method_node); if (ACPI_SUCCESS (status)) { /* * The _REG method is optional and there can be only one per region * definition. This will be executed when the handler is attached * or removed */ region_obj2->extra.method_REG = method_node; } /* * The following loop depends upon the root Node having no parent * ie: Acpi_gbl_Root_node->Parent_entry being set to NULL */ while (node) { /* * Check to see if a handler exists */ handler_obj = NULL; obj_desc = acpi_ns_get_attached_object (node); if (obj_desc) { /* * Can only be a handler if the object exists */ switch (node->type) { case ACPI_TYPE_DEVICE: handler_obj = obj_desc->device.addr_handler; break; case ACPI_TYPE_PROCESSOR: handler_obj = obj_desc->processor.addr_handler; break; case ACPI_TYPE_THERMAL: handler_obj = obj_desc->thermal_zone.addr_handler; break; default: /* Ignore other objects */ break; } while (handler_obj) { /* Is this handler of the correct type? */ if (handler_obj->addr_handler.space_id == space_id) { /* Found correct handler */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Found handler %p for region %p in obj %p\n", handler_obj, region_obj, obj_desc)); status = acpi_ev_attach_region (handler_obj, region_obj, acpi_ns_locked); return_ACPI_STATUS (AE_OK); } /* Try next handler in the list */ handler_obj = handler_obj->addr_handler.next; } } /* * This node does not have the handler we need; * Pop up one level */ node = acpi_ns_get_parent_node (node); } /* * If we get here, there is no handler for this region */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "No handler for Region_type %s(%X) (Region_obj %p)\n", acpi_ut_get_region_name (space_id), space_id, region_obj)); return_ACPI_STATUS (AE_NOT_EXIST); } |