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b0ed7a91 LM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utosi - Support for the _OSI predefined control method | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
b0ed7a91 LM |
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 | ||
73581c02 BM |
50 | /****************************************************************************** |
51 | * | |
52 | * ACPICA policy for new _OSI strings: | |
53 | * | |
54 | * It is the stated policy of ACPICA that new _OSI strings will be integrated | |
55 | * into this module as soon as possible after they are defined. It is strongly | |
56 | * recommended that all ACPICA hosts mirror this policy and integrate any | |
57 | * changes to this module as soon as possible. There are several historical | |
58 | * reasons behind this policy: | |
59 | * | |
60 | * 1) New BIOSs tend to test only the case where the host responds TRUE to | |
61 | * the latest version of Windows, which would respond to the latest/newest | |
62 | * _OSI string. Not responding TRUE to the latest version of Windows will | |
63 | * risk executing untested code paths throughout the DSDT and SSDTs. | |
64 | * | |
65 | * 2) If a new _OSI string is recognized only after a significant delay, this | |
66 | * has the potential to cause problems on existing working machines because | |
67 | * of the possibility that a new and different path through the ASL code | |
68 | * will be executed. | |
69 | * | |
70 | * 3) New _OSI strings are tending to come out about once per year. A delay | |
71 | * in recognizing a new string for a significant amount of time risks the | |
72 | * release of another string which only compounds the initial problem. | |
73 | * | |
74 | *****************************************************************************/ | |
b0ed7a91 LM |
75 | /* |
76 | * Strings supported by the _OSI predefined control method (which is | |
77 | * implemented internally within this module.) | |
78 | * | |
79 | * March 2009: Removed "Linux" as this host no longer wants to respond true | |
80 | * for this string. Basically, the only safe OS strings are windows-related | |
81 | * and in many or most cases represent the only test path within the | |
82 | * BIOS-provided ASL code. | |
83 | * | |
84 | * The last element of each entry is used to track the newest version of | |
85 | * Windows that the BIOS has requested. | |
86 | */ | |
87 | static struct acpi_interface_info acpi_default_supported_interfaces[] = { | |
88 | /* Operating System Vendor Strings */ | |
89 | ||
90 | {"Windows 2000", NULL, 0, ACPI_OSI_WIN_2000}, /* Windows 2000 */ | |
91 | {"Windows 2001", NULL, 0, ACPI_OSI_WIN_XP}, /* Windows XP */ | |
92 | {"Windows 2001 SP1", NULL, 0, ACPI_OSI_WIN_XP_SP1}, /* Windows XP SP1 */ | |
93 | {"Windows 2001.1", NULL, 0, ACPI_OSI_WINSRV_2003}, /* Windows Server 2003 */ | |
94 | {"Windows 2001 SP2", NULL, 0, ACPI_OSI_WIN_XP_SP2}, /* Windows XP SP2 */ | |
95 | {"Windows 2001.1 SP1", NULL, 0, ACPI_OSI_WINSRV_2003_SP1}, /* Windows Server 2003 SP1 - Added 03/2006 */ | |
ba494bee | 96 | {"Windows 2006", NULL, 0, ACPI_OSI_WIN_VISTA}, /* Windows vista - Added 03/2006 */ |
b0ed7a91 LM |
97 | {"Windows 2006.1", NULL, 0, ACPI_OSI_WINSRV_2008}, /* Windows Server 2008 - Added 09/2009 */ |
98 | {"Windows 2006 SP1", NULL, 0, ACPI_OSI_WIN_VISTA_SP1}, /* Windows Vista SP1 - Added 09/2009 */ | |
23ebbf07 | 99 | {"Windows 2006 SP2", NULL, 0, ACPI_OSI_WIN_VISTA_SP2}, /* Windows Vista SP2 - Added 09/2010 */ |
b0ed7a91 | 100 | {"Windows 2009", NULL, 0, ACPI_OSI_WIN_7}, /* Windows 7 and Server 2008 R2 - Added 09/2009 */ |
a57f7f91 | 101 | {"Windows 2012", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8 and Server 2012 - Added 08/2012 */ |
faae404e | 102 | {"Windows 2013", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8.1 and Server 2012 R2 - Added 01/2014 */ |
796888e9 | 103 | {"Windows 2015", NULL, 0, ACPI_OSI_WIN_10}, /* Windows 10 - Added 03/2015 */ |
b0ed7a91 LM |
104 | |
105 | /* Feature Group Strings */ | |
106 | ||
2cf9f5bc | 107 | {"Extended Address Space Descriptor", NULL, ACPI_OSI_FEATURE, 0}, |
b0ed7a91 LM |
108 | |
109 | /* | |
110 | * All "optional" feature group strings (features that are implemented | |
2cf9f5bc LZ |
111 | * by the host) should be dynamically modified to VALID by the host via |
112 | * acpi_install_interface or acpi_update_interfaces. Such optional feature | |
113 | * group strings are set as INVALID by default here. | |
b0ed7a91 | 114 | */ |
2cf9f5bc LZ |
115 | |
116 | {"Module Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, | |
117 | {"Processor Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, | |
118 | {"3.0 Thermal Model", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, | |
119 | {"3.0 _SCP Extensions", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, | |
120 | {"Processor Aggregator Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0} | |
b0ed7a91 LM |
121 | }; |
122 | ||
123 | /******************************************************************************* | |
124 | * | |
125 | * FUNCTION: acpi_ut_initialize_interfaces | |
126 | * | |
127 | * PARAMETERS: None | |
128 | * | |
129 | * RETURN: Status | |
130 | * | |
131 | * DESCRIPTION: Initialize the global _OSI supported interfaces list | |
132 | * | |
133 | ******************************************************************************/ | |
134 | ||
135 | acpi_status acpi_ut_initialize_interfaces(void) | |
136 | { | |
388a9902 | 137 | acpi_status status; |
b0ed7a91 LM |
138 | u32 i; |
139 | ||
388a9902 JK |
140 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
141 | if (ACPI_FAILURE(status)) { | |
142 | return (status); | |
143 | } | |
144 | ||
b0ed7a91 LM |
145 | acpi_gbl_supported_interfaces = acpi_default_supported_interfaces; |
146 | ||
147 | /* Link the static list of supported interfaces */ | |
148 | ||
149 | for (i = 0; | |
150 | i < (ACPI_ARRAY_LENGTH(acpi_default_supported_interfaces) - 1); | |
151 | i++) { | |
152 | acpi_default_supported_interfaces[i].next = | |
f5c1e1c5 | 153 | &acpi_default_supported_interfaces[(acpi_size)i + 1]; |
b0ed7a91 LM |
154 | } |
155 | ||
156 | acpi_os_release_mutex(acpi_gbl_osi_mutex); | |
157 | return (AE_OK); | |
158 | } | |
159 | ||
160 | /******************************************************************************* | |
161 | * | |
162 | * FUNCTION: acpi_ut_interface_terminate | |
163 | * | |
164 | * PARAMETERS: None | |
165 | * | |
388a9902 | 166 | * RETURN: Status |
b0ed7a91 LM |
167 | * |
168 | * DESCRIPTION: Delete all interfaces in the global list. Sets | |
169 | * acpi_gbl_supported_interfaces to NULL. | |
170 | * | |
171 | ******************************************************************************/ | |
172 | ||
388a9902 | 173 | acpi_status acpi_ut_interface_terminate(void) |
b0ed7a91 | 174 | { |
388a9902 | 175 | acpi_status status; |
b0ed7a91 LM |
176 | struct acpi_interface_info *next_interface; |
177 | ||
388a9902 JK |
178 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
179 | if (ACPI_FAILURE(status)) { | |
180 | return (status); | |
181 | } | |
b0ed7a91 | 182 | |
388a9902 | 183 | next_interface = acpi_gbl_supported_interfaces; |
b0ed7a91 LM |
184 | while (next_interface) { |
185 | acpi_gbl_supported_interfaces = next_interface->next; | |
186 | ||
b0ed7a91 | 187 | if (next_interface->flags & ACPI_OSI_DYNAMIC) { |
2cf9f5bc LZ |
188 | |
189 | /* Only interfaces added at runtime can be freed */ | |
190 | ||
b0ed7a91 LM |
191 | ACPI_FREE(next_interface->name); |
192 | ACPI_FREE(next_interface); | |
2cf9f5bc LZ |
193 | } else { |
194 | /* Interface is in static list. Reset it to invalid or valid. */ | |
195 | ||
196 | if (next_interface->flags & ACPI_OSI_DEFAULT_INVALID) { | |
197 | next_interface->flags |= ACPI_OSI_INVALID; | |
198 | } else { | |
199 | next_interface->flags &= ~ACPI_OSI_INVALID; | |
200 | } | |
b0ed7a91 LM |
201 | } |
202 | ||
203 | next_interface = acpi_gbl_supported_interfaces; | |
204 | } | |
205 | ||
206 | acpi_os_release_mutex(acpi_gbl_osi_mutex); | |
388a9902 | 207 | return (AE_OK); |
b0ed7a91 LM |
208 | } |
209 | ||
210 | /******************************************************************************* | |
211 | * | |
212 | * FUNCTION: acpi_ut_install_interface | |
213 | * | |
214 | * PARAMETERS: interface_name - The interface to install | |
215 | * | |
216 | * RETURN: Status | |
217 | * | |
218 | * DESCRIPTION: Install the interface into the global interface list. | |
219 | * Caller MUST hold acpi_gbl_osi_mutex | |
220 | * | |
221 | ******************************************************************************/ | |
222 | ||
223 | acpi_status acpi_ut_install_interface(acpi_string interface_name) | |
224 | { | |
225 | struct acpi_interface_info *interface_info; | |
226 | ||
227 | /* Allocate info block and space for the name string */ | |
228 | ||
229 | interface_info = | |
230 | ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_interface_info)); | |
231 | if (!interface_info) { | |
232 | return (AE_NO_MEMORY); | |
233 | } | |
234 | ||
4fa4616e | 235 | interface_info->name = ACPI_ALLOCATE_ZEROED(strlen(interface_name) + 1); |
b0ed7a91 LM |
236 | if (!interface_info->name) { |
237 | ACPI_FREE(interface_info); | |
238 | return (AE_NO_MEMORY); | |
239 | } | |
240 | ||
241 | /* Initialize new info and insert at the head of the global list */ | |
242 | ||
4fa4616e | 243 | strcpy(interface_info->name, interface_name); |
b0ed7a91 LM |
244 | interface_info->flags = ACPI_OSI_DYNAMIC; |
245 | interface_info->next = acpi_gbl_supported_interfaces; | |
246 | ||
247 | acpi_gbl_supported_interfaces = interface_info; | |
248 | return (AE_OK); | |
249 | } | |
250 | ||
251 | /******************************************************************************* | |
252 | * | |
253 | * FUNCTION: acpi_ut_remove_interface | |
254 | * | |
255 | * PARAMETERS: interface_name - The interface to remove | |
256 | * | |
257 | * RETURN: Status | |
258 | * | |
259 | * DESCRIPTION: Remove the interface from the global interface list. | |
260 | * Caller MUST hold acpi_gbl_osi_mutex | |
261 | * | |
262 | ******************************************************************************/ | |
263 | ||
264 | acpi_status acpi_ut_remove_interface(acpi_string interface_name) | |
265 | { | |
266 | struct acpi_interface_info *previous_interface; | |
267 | struct acpi_interface_info *next_interface; | |
268 | ||
269 | previous_interface = next_interface = acpi_gbl_supported_interfaces; | |
270 | while (next_interface) { | |
4fa4616e | 271 | if (!strcmp(interface_name, next_interface->name)) { |
1fad8738 BM |
272 | /* |
273 | * Found: name is in either the static list | |
274 | * or was added at runtime | |
275 | */ | |
b0ed7a91 LM |
276 | if (next_interface->flags & ACPI_OSI_DYNAMIC) { |
277 | ||
278 | /* Interface was added dynamically, remove and free it */ | |
279 | ||
280 | if (previous_interface == next_interface) { | |
281 | acpi_gbl_supported_interfaces = | |
282 | next_interface->next; | |
283 | } else { | |
284 | previous_interface->next = | |
285 | next_interface->next; | |
286 | } | |
287 | ||
288 | ACPI_FREE(next_interface->name); | |
289 | ACPI_FREE(next_interface); | |
290 | } else { | |
291 | /* | |
1fad8738 BM |
292 | * Interface is in static list. If marked invalid, then |
293 | * it does not actually exist. Else, mark it invalid. | |
b0ed7a91 LM |
294 | */ |
295 | if (next_interface->flags & ACPI_OSI_INVALID) { | |
296 | return (AE_NOT_EXIST); | |
297 | } | |
298 | ||
299 | next_interface->flags |= ACPI_OSI_INVALID; | |
300 | } | |
301 | ||
302 | return (AE_OK); | |
303 | } | |
304 | ||
305 | previous_interface = next_interface; | |
306 | next_interface = next_interface->next; | |
307 | } | |
308 | ||
309 | /* Interface was not found */ | |
310 | ||
311 | return (AE_NOT_EXIST); | |
312 | } | |
313 | ||
2cf9f5bc LZ |
314 | /******************************************************************************* |
315 | * | |
316 | * FUNCTION: acpi_ut_update_interfaces | |
317 | * | |
318 | * PARAMETERS: action - Actions to be performed during the | |
319 | * update | |
320 | * | |
321 | * RETURN: Status | |
322 | * | |
323 | * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor | |
324 | * strings or/and feature group strings. | |
325 | * Caller MUST hold acpi_gbl_osi_mutex | |
326 | * | |
327 | ******************************************************************************/ | |
328 | ||
329 | acpi_status acpi_ut_update_interfaces(u8 action) | |
330 | { | |
331 | struct acpi_interface_info *next_interface; | |
332 | ||
333 | next_interface = acpi_gbl_supported_interfaces; | |
334 | while (next_interface) { | |
335 | if (((next_interface->flags & ACPI_OSI_FEATURE) && | |
336 | (action & ACPI_FEATURE_STRINGS)) || | |
337 | (!(next_interface->flags & ACPI_OSI_FEATURE) && | |
338 | (action & ACPI_VENDOR_STRINGS))) { | |
339 | if (action & ACPI_DISABLE_INTERFACES) { | |
340 | ||
341 | /* Mark the interfaces as invalid */ | |
342 | ||
343 | next_interface->flags |= ACPI_OSI_INVALID; | |
344 | } else { | |
345 | /* Mark the interfaces as valid */ | |
346 | ||
347 | next_interface->flags &= ~ACPI_OSI_INVALID; | |
348 | } | |
349 | } | |
350 | ||
351 | next_interface = next_interface->next; | |
352 | } | |
353 | ||
354 | return (AE_OK); | |
355 | } | |
356 | ||
b0ed7a91 LM |
357 | /******************************************************************************* |
358 | * | |
359 | * FUNCTION: acpi_ut_get_interface | |
360 | * | |
361 | * PARAMETERS: interface_name - The interface to find | |
362 | * | |
363 | * RETURN: struct acpi_interface_info if found. NULL if not found. | |
364 | * | |
365 | * DESCRIPTION: Search for the specified interface name in the global list. | |
366 | * Caller MUST hold acpi_gbl_osi_mutex | |
367 | * | |
368 | ******************************************************************************/ | |
369 | ||
370 | struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name) | |
371 | { | |
372 | struct acpi_interface_info *next_interface; | |
373 | ||
374 | next_interface = acpi_gbl_supported_interfaces; | |
375 | while (next_interface) { | |
4fa4616e | 376 | if (!strcmp(interface_name, next_interface->name)) { |
b0ed7a91 LM |
377 | return (next_interface); |
378 | } | |
379 | ||
380 | next_interface = next_interface->next; | |
381 | } | |
382 | ||
383 | return (NULL); | |
384 | } | |
385 | ||
386 | /******************************************************************************* | |
387 | * | |
388 | * FUNCTION: acpi_ut_osi_implementation | |
389 | * | |
390 | * PARAMETERS: walk_state - Current walk state | |
391 | * | |
392 | * RETURN: Status | |
955f485d BM |
393 | * Integer: TRUE (0) if input string is matched |
394 | * FALSE (-1) if string is not matched | |
b0ed7a91 LM |
395 | * |
396 | * DESCRIPTION: Implementation of the _OSI predefined control method. When | |
397 | * an invocation of _OSI is encountered in the system AML, | |
398 | * control is transferred to this function. | |
399 | * | |
955f485d BM |
400 | * (August 2016) |
401 | * Note: _OSI is now defined to return "Ones" to indicate a match, for | |
402 | * compatibility with other ACPI implementations. On a 32-bit DSDT, Ones | |
403 | * is 0xFFFFFFFF. On a 64-bit DSDT, Ones is 0xFFFFFFFFFFFFFFFF | |
404 | * (ACPI_UINT64_MAX). | |
405 | * | |
406 | * This function always returns ACPI_UINT64_MAX for TRUE, and later code | |
407 | * will truncate this to 32 bits if necessary. | |
408 | * | |
b0ed7a91 LM |
409 | ******************************************************************************/ |
410 | ||
f5c1e1c5 | 411 | acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state) |
b0ed7a91 LM |
412 | { |
413 | union acpi_operand_object *string_desc; | |
414 | union acpi_operand_object *return_desc; | |
415 | struct acpi_interface_info *interface_info; | |
416 | acpi_interface_handler interface_handler; | |
388a9902 | 417 | acpi_status status; |
955f485d | 418 | u64 return_value; |
b0ed7a91 LM |
419 | |
420 | ACPI_FUNCTION_TRACE(ut_osi_implementation); | |
421 | ||
422 | /* Validate the string input argument (from the AML caller) */ | |
423 | ||
424 | string_desc = walk_state->arguments[0].object; | |
425 | if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) { | |
426 | return_ACPI_STATUS(AE_TYPE); | |
427 | } | |
428 | ||
429 | /* Create a return object */ | |
430 | ||
431 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); | |
432 | if (!return_desc) { | |
433 | return_ACPI_STATUS(AE_NO_MEMORY); | |
434 | } | |
435 | ||
436 | /* Default return value is 0, NOT SUPPORTED */ | |
437 | ||
438 | return_value = 0; | |
388a9902 JK |
439 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
440 | if (ACPI_FAILURE(status)) { | |
3aa2eeac JK |
441 | acpi_ut_remove_reference(return_desc); |
442 | return_ACPI_STATUS(status); | |
388a9902 | 443 | } |
b0ed7a91 LM |
444 | |
445 | /* Lookup the interface in the global _OSI list */ | |
446 | ||
447 | interface_info = acpi_ut_get_interface(string_desc->string.pointer); | |
448 | if (interface_info && !(interface_info->flags & ACPI_OSI_INVALID)) { | |
449 | /* | |
450 | * The interface is supported. | |
451 | * Update the osi_data if necessary. We keep track of the latest | |
452 | * version of Windows that has been requested by the BIOS. | |
453 | */ | |
454 | if (interface_info->value > acpi_gbl_osi_data) { | |
455 | acpi_gbl_osi_data = interface_info->value; | |
456 | } | |
457 | ||
955f485d | 458 | return_value = ACPI_UINT64_MAX; |
b0ed7a91 LM |
459 | } |
460 | ||
461 | acpi_os_release_mutex(acpi_gbl_osi_mutex); | |
462 | ||
463 | /* | |
464 | * Invoke an optional _OSI interface handler. The host OS may wish | |
465 | * to do some interface-specific handling. For example, warn about | |
466 | * certain interfaces or override the true/false support value. | |
467 | */ | |
468 | interface_handler = acpi_gbl_interface_handler; | |
469 | if (interface_handler) { | |
955f485d BM |
470 | if (interface_handler |
471 | (string_desc->string.pointer, (u32)return_value)) { | |
472 | return_value = ACPI_UINT64_MAX; | |
473 | } | |
b0ed7a91 LM |
474 | } |
475 | ||
476 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO, | |
477 | "ACPI: BIOS _OSI(\"%s\") is %ssupported\n", | |
478 | string_desc->string.pointer, | |
479 | return_value == 0 ? "not " : "")); | |
480 | ||
481 | /* Complete the return object */ | |
482 | ||
483 | return_desc->integer.value = return_value; | |
484 | walk_state->return_desc = return_desc; | |
485 | return_ACPI_STATUS(AE_OK); | |
486 | } |