Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: utosi - Support for the _OSI predefined control method |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
Bob Moore | 25f044e | 2013-01-25 05:38:56 +0000 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2013, Intel Corp. |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include <acpi/acpi.h> |
| 45 | #include "accommon.h" |
| 46 | |
| 47 | #define _COMPONENT ACPI_UTILITIES |
| 48 | ACPI_MODULE_NAME("utosi") |
| 49 | |
| 50 | /* |
| 51 | * Strings supported by the _OSI predefined control method (which is |
| 52 | * implemented internally within this module.) |
| 53 | * |
| 54 | * March 2009: Removed "Linux" as this host no longer wants to respond true |
| 55 | * for this string. Basically, the only safe OS strings are windows-related |
| 56 | * and in many or most cases represent the only test path within the |
| 57 | * BIOS-provided ASL code. |
| 58 | * |
| 59 | * The last element of each entry is used to track the newest version of |
| 60 | * Windows that the BIOS has requested. |
| 61 | */ |
| 62 | static struct acpi_interface_info acpi_default_supported_interfaces[] = { |
| 63 | /* Operating System Vendor Strings */ |
| 64 | |
| 65 | {"Windows 2000", NULL, 0, ACPI_OSI_WIN_2000}, /* Windows 2000 */ |
| 66 | {"Windows 2001", NULL, 0, ACPI_OSI_WIN_XP}, /* Windows XP */ |
| 67 | {"Windows 2001 SP1", NULL, 0, ACPI_OSI_WIN_XP_SP1}, /* Windows XP SP1 */ |
| 68 | {"Windows 2001.1", NULL, 0, ACPI_OSI_WINSRV_2003}, /* Windows Server 2003 */ |
| 69 | {"Windows 2001 SP2", NULL, 0, ACPI_OSI_WIN_XP_SP2}, /* Windows XP SP2 */ |
| 70 | {"Windows 2001.1 SP1", NULL, 0, ACPI_OSI_WINSRV_2003_SP1}, /* Windows Server 2003 SP1 - Added 03/2006 */ |
Bob Moore | ba494be | 2012-07-12 09:40:10 +0800 | [diff] [blame] | 71 | {"Windows 2006", NULL, 0, ACPI_OSI_WIN_VISTA}, /* Windows vista - Added 03/2006 */ |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 72 | {"Windows 2006.1", NULL, 0, ACPI_OSI_WINSRV_2008}, /* Windows Server 2008 - Added 09/2009 */ |
| 73 | {"Windows 2006 SP1", NULL, 0, ACPI_OSI_WIN_VISTA_SP1}, /* Windows Vista SP1 - Added 09/2009 */ |
Bob Moore | 23ebbf0 | 2010-10-18 08:50:47 +0800 | [diff] [blame] | 74 | {"Windows 2006 SP2", NULL, 0, ACPI_OSI_WIN_VISTA_SP2}, /* Windows Vista SP2 - Added 09/2010 */ |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 75 | {"Windows 2009", NULL, 0, ACPI_OSI_WIN_7}, /* Windows 7 and Server 2008 R2 - Added 09/2009 */ |
Bob Moore | a57f7f9 | 2012-08-17 10:55:02 +0800 | [diff] [blame] | 76 | {"Windows 2012", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8 and Server 2012 - Added 08/2012 */ |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 77 | |
| 78 | /* Feature Group Strings */ |
| 79 | |
| 80 | {"Extended Address Space Descriptor", NULL, 0, 0} |
| 81 | |
| 82 | /* |
| 83 | * All "optional" feature group strings (features that are implemented |
| 84 | * by the host) should be dynamically added by the host via |
| 85 | * acpi_install_interface and should not be manually added here. |
| 86 | * |
| 87 | * Examples of optional feature group strings: |
| 88 | * |
| 89 | * "Module Device" |
| 90 | * "Processor Device" |
| 91 | * "3.0 Thermal Model" |
| 92 | * "3.0 _SCP Extensions" |
| 93 | * "Processor Aggregator Device" |
| 94 | */ |
| 95 | }; |
| 96 | |
| 97 | /******************************************************************************* |
| 98 | * |
| 99 | * FUNCTION: acpi_ut_initialize_interfaces |
| 100 | * |
| 101 | * PARAMETERS: None |
| 102 | * |
| 103 | * RETURN: Status |
| 104 | * |
| 105 | * DESCRIPTION: Initialize the global _OSI supported interfaces list |
| 106 | * |
| 107 | ******************************************************************************/ |
| 108 | |
| 109 | acpi_status acpi_ut_initialize_interfaces(void) |
| 110 | { |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 111 | acpi_status status; |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 112 | u32 i; |
| 113 | |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 114 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
| 115 | if (ACPI_FAILURE(status)) { |
| 116 | return (status); |
| 117 | } |
| 118 | |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 119 | acpi_gbl_supported_interfaces = acpi_default_supported_interfaces; |
| 120 | |
| 121 | /* Link the static list of supported interfaces */ |
| 122 | |
| 123 | for (i = 0; |
| 124 | i < (ACPI_ARRAY_LENGTH(acpi_default_supported_interfaces) - 1); |
| 125 | i++) { |
| 126 | acpi_default_supported_interfaces[i].next = |
| 127 | &acpi_default_supported_interfaces[(acpi_size) i + 1]; |
| 128 | } |
| 129 | |
| 130 | acpi_os_release_mutex(acpi_gbl_osi_mutex); |
| 131 | return (AE_OK); |
| 132 | } |
| 133 | |
| 134 | /******************************************************************************* |
| 135 | * |
| 136 | * FUNCTION: acpi_ut_interface_terminate |
| 137 | * |
| 138 | * PARAMETERS: None |
| 139 | * |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 140 | * RETURN: Status |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 141 | * |
| 142 | * DESCRIPTION: Delete all interfaces in the global list. Sets |
| 143 | * acpi_gbl_supported_interfaces to NULL. |
| 144 | * |
| 145 | ******************************************************************************/ |
| 146 | |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 147 | acpi_status acpi_ut_interface_terminate(void) |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 148 | { |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 149 | acpi_status status; |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 150 | struct acpi_interface_info *next_interface; |
| 151 | |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 152 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
| 153 | if (ACPI_FAILURE(status)) { |
| 154 | return (status); |
| 155 | } |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 156 | |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 157 | next_interface = acpi_gbl_supported_interfaces; |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 158 | while (next_interface) { |
| 159 | acpi_gbl_supported_interfaces = next_interface->next; |
| 160 | |
| 161 | /* Only interfaces added at runtime can be freed */ |
| 162 | |
| 163 | if (next_interface->flags & ACPI_OSI_DYNAMIC) { |
| 164 | ACPI_FREE(next_interface->name); |
| 165 | ACPI_FREE(next_interface); |
| 166 | } |
| 167 | |
| 168 | next_interface = acpi_gbl_supported_interfaces; |
| 169 | } |
| 170 | |
| 171 | acpi_os_release_mutex(acpi_gbl_osi_mutex); |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 172 | return (AE_OK); |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | /******************************************************************************* |
| 176 | * |
| 177 | * FUNCTION: acpi_ut_install_interface |
| 178 | * |
| 179 | * PARAMETERS: interface_name - The interface to install |
| 180 | * |
| 181 | * RETURN: Status |
| 182 | * |
| 183 | * DESCRIPTION: Install the interface into the global interface list. |
| 184 | * Caller MUST hold acpi_gbl_osi_mutex |
| 185 | * |
| 186 | ******************************************************************************/ |
| 187 | |
| 188 | acpi_status acpi_ut_install_interface(acpi_string interface_name) |
| 189 | { |
| 190 | struct acpi_interface_info *interface_info; |
| 191 | |
| 192 | /* Allocate info block and space for the name string */ |
| 193 | |
| 194 | interface_info = |
| 195 | ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_interface_info)); |
| 196 | if (!interface_info) { |
| 197 | return (AE_NO_MEMORY); |
| 198 | } |
| 199 | |
| 200 | interface_info->name = |
| 201 | ACPI_ALLOCATE_ZEROED(ACPI_STRLEN(interface_name) + 1); |
| 202 | if (!interface_info->name) { |
| 203 | ACPI_FREE(interface_info); |
| 204 | return (AE_NO_MEMORY); |
| 205 | } |
| 206 | |
| 207 | /* Initialize new info and insert at the head of the global list */ |
| 208 | |
| 209 | ACPI_STRCPY(interface_info->name, interface_name); |
| 210 | interface_info->flags = ACPI_OSI_DYNAMIC; |
| 211 | interface_info->next = acpi_gbl_supported_interfaces; |
| 212 | |
| 213 | acpi_gbl_supported_interfaces = interface_info; |
| 214 | return (AE_OK); |
| 215 | } |
| 216 | |
| 217 | /******************************************************************************* |
| 218 | * |
| 219 | * FUNCTION: acpi_ut_remove_interface |
| 220 | * |
| 221 | * PARAMETERS: interface_name - The interface to remove |
| 222 | * |
| 223 | * RETURN: Status |
| 224 | * |
| 225 | * DESCRIPTION: Remove the interface from the global interface list. |
| 226 | * Caller MUST hold acpi_gbl_osi_mutex |
| 227 | * |
| 228 | ******************************************************************************/ |
| 229 | |
| 230 | acpi_status acpi_ut_remove_interface(acpi_string interface_name) |
| 231 | { |
| 232 | struct acpi_interface_info *previous_interface; |
| 233 | struct acpi_interface_info *next_interface; |
| 234 | |
| 235 | previous_interface = next_interface = acpi_gbl_supported_interfaces; |
| 236 | while (next_interface) { |
| 237 | if (!ACPI_STRCMP(interface_name, next_interface->name)) { |
| 238 | |
| 239 | /* Found: name is in either the static list or was added at runtime */ |
| 240 | |
| 241 | if (next_interface->flags & ACPI_OSI_DYNAMIC) { |
| 242 | |
| 243 | /* Interface was added dynamically, remove and free it */ |
| 244 | |
| 245 | if (previous_interface == next_interface) { |
| 246 | acpi_gbl_supported_interfaces = |
| 247 | next_interface->next; |
| 248 | } else { |
| 249 | previous_interface->next = |
| 250 | next_interface->next; |
| 251 | } |
| 252 | |
| 253 | ACPI_FREE(next_interface->name); |
| 254 | ACPI_FREE(next_interface); |
| 255 | } else { |
| 256 | /* |
| 257 | * Interface is in static list. If marked invalid, then it |
| 258 | * does not actually exist. Else, mark it invalid. |
| 259 | */ |
| 260 | if (next_interface->flags & ACPI_OSI_INVALID) { |
| 261 | return (AE_NOT_EXIST); |
| 262 | } |
| 263 | |
| 264 | next_interface->flags |= ACPI_OSI_INVALID; |
| 265 | } |
| 266 | |
| 267 | return (AE_OK); |
| 268 | } |
| 269 | |
| 270 | previous_interface = next_interface; |
| 271 | next_interface = next_interface->next; |
| 272 | } |
| 273 | |
| 274 | /* Interface was not found */ |
| 275 | |
| 276 | return (AE_NOT_EXIST); |
| 277 | } |
| 278 | |
| 279 | /******************************************************************************* |
| 280 | * |
| 281 | * FUNCTION: acpi_ut_get_interface |
| 282 | * |
| 283 | * PARAMETERS: interface_name - The interface to find |
| 284 | * |
| 285 | * RETURN: struct acpi_interface_info if found. NULL if not found. |
| 286 | * |
| 287 | * DESCRIPTION: Search for the specified interface name in the global list. |
| 288 | * Caller MUST hold acpi_gbl_osi_mutex |
| 289 | * |
| 290 | ******************************************************************************/ |
| 291 | |
| 292 | struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name) |
| 293 | { |
| 294 | struct acpi_interface_info *next_interface; |
| 295 | |
| 296 | next_interface = acpi_gbl_supported_interfaces; |
| 297 | while (next_interface) { |
| 298 | if (!ACPI_STRCMP(interface_name, next_interface->name)) { |
| 299 | return (next_interface); |
| 300 | } |
| 301 | |
| 302 | next_interface = next_interface->next; |
| 303 | } |
| 304 | |
| 305 | return (NULL); |
| 306 | } |
| 307 | |
| 308 | /******************************************************************************* |
| 309 | * |
| 310 | * FUNCTION: acpi_ut_osi_implementation |
| 311 | * |
| 312 | * PARAMETERS: walk_state - Current walk state |
| 313 | * |
| 314 | * RETURN: Status |
| 315 | * |
| 316 | * DESCRIPTION: Implementation of the _OSI predefined control method. When |
| 317 | * an invocation of _OSI is encountered in the system AML, |
| 318 | * control is transferred to this function. |
| 319 | * |
| 320 | ******************************************************************************/ |
| 321 | |
| 322 | acpi_status acpi_ut_osi_implementation(struct acpi_walk_state * walk_state) |
| 323 | { |
| 324 | union acpi_operand_object *string_desc; |
| 325 | union acpi_operand_object *return_desc; |
| 326 | struct acpi_interface_info *interface_info; |
| 327 | acpi_interface_handler interface_handler; |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 328 | acpi_status status; |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 329 | u32 return_value; |
| 330 | |
| 331 | ACPI_FUNCTION_TRACE(ut_osi_implementation); |
| 332 | |
| 333 | /* Validate the string input argument (from the AML caller) */ |
| 334 | |
| 335 | string_desc = walk_state->arguments[0].object; |
| 336 | if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) { |
| 337 | return_ACPI_STATUS(AE_TYPE); |
| 338 | } |
| 339 | |
| 340 | /* Create a return object */ |
| 341 | |
| 342 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
| 343 | if (!return_desc) { |
| 344 | return_ACPI_STATUS(AE_NO_MEMORY); |
| 345 | } |
| 346 | |
| 347 | /* Default return value is 0, NOT SUPPORTED */ |
| 348 | |
| 349 | return_value = 0; |
Jung-uk Kim | 388a990 | 2013-04-12 00:24:34 +0000 | [diff] [blame^] | 350 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
| 351 | if (ACPI_FAILURE(status)) { |
| 352 | return (status); |
| 353 | } |
Lin Ming | b0ed7a9 | 2010-08-06 09:35:51 +0800 | [diff] [blame] | 354 | |
| 355 | /* Lookup the interface in the global _OSI list */ |
| 356 | |
| 357 | interface_info = acpi_ut_get_interface(string_desc->string.pointer); |
| 358 | if (interface_info && !(interface_info->flags & ACPI_OSI_INVALID)) { |
| 359 | /* |
| 360 | * The interface is supported. |
| 361 | * Update the osi_data if necessary. We keep track of the latest |
| 362 | * version of Windows that has been requested by the BIOS. |
| 363 | */ |
| 364 | if (interface_info->value > acpi_gbl_osi_data) { |
| 365 | acpi_gbl_osi_data = interface_info->value; |
| 366 | } |
| 367 | |
| 368 | return_value = ACPI_UINT32_MAX; |
| 369 | } |
| 370 | |
| 371 | acpi_os_release_mutex(acpi_gbl_osi_mutex); |
| 372 | |
| 373 | /* |
| 374 | * Invoke an optional _OSI interface handler. The host OS may wish |
| 375 | * to do some interface-specific handling. For example, warn about |
| 376 | * certain interfaces or override the true/false support value. |
| 377 | */ |
| 378 | interface_handler = acpi_gbl_interface_handler; |
| 379 | if (interface_handler) { |
| 380 | return_value = |
| 381 | interface_handler(string_desc->string.pointer, |
| 382 | return_value); |
| 383 | } |
| 384 | |
| 385 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO, |
| 386 | "ACPI: BIOS _OSI(\"%s\") is %ssupported\n", |
| 387 | string_desc->string.pointer, |
| 388 | return_value == 0 ? "not " : "")); |
| 389 | |
| 390 | /* Complete the return object */ |
| 391 | |
| 392 | return_desc->integer.value = return_value; |
| 393 | walk_state->return_desc = return_desc; |
| 394 | return_ACPI_STATUS(AE_OK); |
| 395 | } |