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b0ed7a91 LM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utosi - Support for the _OSI predefined control method | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
7735ca0e | 8 | * Copyright (C) 2000 - 2017, 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 */ |
bc4d413a ML |
104 | {"Windows 2016", NULL, 0, ACPI_OSI_WIN_10_RS1}, /* Windows 10 version 1607 - Added 12/2017 */ |
105 | {"Windows 2017", NULL, 0, ACPI_OSI_WIN_10_RS2}, /* Windows 10 version 1703 - Added 12/2017 */ | |
b0ed7a91 LM |
106 | |
107 | /* Feature Group Strings */ | |
108 | ||
2cf9f5bc | 109 | {"Extended Address Space Descriptor", NULL, ACPI_OSI_FEATURE, 0}, |
b0ed7a91 LM |
110 | |
111 | /* | |
112 | * All "optional" feature group strings (features that are implemented | |
2cf9f5bc LZ |
113 | * by the host) should be dynamically modified to VALID by the host via |
114 | * acpi_install_interface or acpi_update_interfaces. Such optional feature | |
115 | * group strings are set as INVALID by default here. | |
b0ed7a91 | 116 | */ |
2cf9f5bc LZ |
117 | |
118 | {"Module Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, | |
119 | {"Processor Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, | |
120 | {"3.0 Thermal Model", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, | |
121 | {"3.0 _SCP Extensions", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}, | |
122 | {"Processor Aggregator Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0} | |
b0ed7a91 LM |
123 | }; |
124 | ||
125 | /******************************************************************************* | |
126 | * | |
127 | * FUNCTION: acpi_ut_initialize_interfaces | |
128 | * | |
129 | * PARAMETERS: None | |
130 | * | |
131 | * RETURN: Status | |
132 | * | |
133 | * DESCRIPTION: Initialize the global _OSI supported interfaces list | |
134 | * | |
135 | ******************************************************************************/ | |
136 | ||
137 | acpi_status acpi_ut_initialize_interfaces(void) | |
138 | { | |
388a9902 | 139 | acpi_status status; |
b0ed7a91 LM |
140 | u32 i; |
141 | ||
388a9902 JK |
142 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
143 | if (ACPI_FAILURE(status)) { | |
144 | return (status); | |
145 | } | |
146 | ||
b0ed7a91 LM |
147 | acpi_gbl_supported_interfaces = acpi_default_supported_interfaces; |
148 | ||
149 | /* Link the static list of supported interfaces */ | |
150 | ||
151 | for (i = 0; | |
152 | i < (ACPI_ARRAY_LENGTH(acpi_default_supported_interfaces) - 1); | |
153 | i++) { | |
154 | acpi_default_supported_interfaces[i].next = | |
f5c1e1c5 | 155 | &acpi_default_supported_interfaces[(acpi_size)i + 1]; |
b0ed7a91 LM |
156 | } |
157 | ||
158 | acpi_os_release_mutex(acpi_gbl_osi_mutex); | |
159 | return (AE_OK); | |
160 | } | |
161 | ||
162 | /******************************************************************************* | |
163 | * | |
164 | * FUNCTION: acpi_ut_interface_terminate | |
165 | * | |
166 | * PARAMETERS: None | |
167 | * | |
388a9902 | 168 | * RETURN: Status |
b0ed7a91 LM |
169 | * |
170 | * DESCRIPTION: Delete all interfaces in the global list. Sets | |
171 | * acpi_gbl_supported_interfaces to NULL. | |
172 | * | |
173 | ******************************************************************************/ | |
174 | ||
388a9902 | 175 | acpi_status acpi_ut_interface_terminate(void) |
b0ed7a91 | 176 | { |
388a9902 | 177 | acpi_status status; |
b0ed7a91 LM |
178 | struct acpi_interface_info *next_interface; |
179 | ||
388a9902 JK |
180 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
181 | if (ACPI_FAILURE(status)) { | |
182 | return (status); | |
183 | } | |
b0ed7a91 | 184 | |
388a9902 | 185 | next_interface = acpi_gbl_supported_interfaces; |
b0ed7a91 LM |
186 | while (next_interface) { |
187 | acpi_gbl_supported_interfaces = next_interface->next; | |
188 | ||
b0ed7a91 | 189 | if (next_interface->flags & ACPI_OSI_DYNAMIC) { |
2cf9f5bc LZ |
190 | |
191 | /* Only interfaces added at runtime can be freed */ | |
192 | ||
b0ed7a91 LM |
193 | ACPI_FREE(next_interface->name); |
194 | ACPI_FREE(next_interface); | |
2cf9f5bc LZ |
195 | } else { |
196 | /* Interface is in static list. Reset it to invalid or valid. */ | |
197 | ||
198 | if (next_interface->flags & ACPI_OSI_DEFAULT_INVALID) { | |
199 | next_interface->flags |= ACPI_OSI_INVALID; | |
200 | } else { | |
201 | next_interface->flags &= ~ACPI_OSI_INVALID; | |
202 | } | |
b0ed7a91 LM |
203 | } |
204 | ||
205 | next_interface = acpi_gbl_supported_interfaces; | |
206 | } | |
207 | ||
208 | acpi_os_release_mutex(acpi_gbl_osi_mutex); | |
388a9902 | 209 | return (AE_OK); |
b0ed7a91 LM |
210 | } |
211 | ||
212 | /******************************************************************************* | |
213 | * | |
214 | * FUNCTION: acpi_ut_install_interface | |
215 | * | |
216 | * PARAMETERS: interface_name - The interface to install | |
217 | * | |
218 | * RETURN: Status | |
219 | * | |
220 | * DESCRIPTION: Install the interface into the global interface list. | |
221 | * Caller MUST hold acpi_gbl_osi_mutex | |
222 | * | |
223 | ******************************************************************************/ | |
224 | ||
225 | acpi_status acpi_ut_install_interface(acpi_string interface_name) | |
226 | { | |
227 | struct acpi_interface_info *interface_info; | |
228 | ||
229 | /* Allocate info block and space for the name string */ | |
230 | ||
231 | interface_info = | |
232 | ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_interface_info)); | |
233 | if (!interface_info) { | |
234 | return (AE_NO_MEMORY); | |
235 | } | |
236 | ||
4fa4616e | 237 | interface_info->name = ACPI_ALLOCATE_ZEROED(strlen(interface_name) + 1); |
b0ed7a91 LM |
238 | if (!interface_info->name) { |
239 | ACPI_FREE(interface_info); | |
240 | return (AE_NO_MEMORY); | |
241 | } | |
242 | ||
243 | /* Initialize new info and insert at the head of the global list */ | |
244 | ||
4fa4616e | 245 | strcpy(interface_info->name, interface_name); |
b0ed7a91 LM |
246 | interface_info->flags = ACPI_OSI_DYNAMIC; |
247 | interface_info->next = acpi_gbl_supported_interfaces; | |
248 | ||
249 | acpi_gbl_supported_interfaces = interface_info; | |
250 | return (AE_OK); | |
251 | } | |
252 | ||
253 | /******************************************************************************* | |
254 | * | |
255 | * FUNCTION: acpi_ut_remove_interface | |
256 | * | |
257 | * PARAMETERS: interface_name - The interface to remove | |
258 | * | |
259 | * RETURN: Status | |
260 | * | |
261 | * DESCRIPTION: Remove the interface from the global interface list. | |
262 | * Caller MUST hold acpi_gbl_osi_mutex | |
263 | * | |
264 | ******************************************************************************/ | |
265 | ||
266 | acpi_status acpi_ut_remove_interface(acpi_string interface_name) | |
267 | { | |
268 | struct acpi_interface_info *previous_interface; | |
269 | struct acpi_interface_info *next_interface; | |
270 | ||
271 | previous_interface = next_interface = acpi_gbl_supported_interfaces; | |
272 | while (next_interface) { | |
4fa4616e | 273 | if (!strcmp(interface_name, next_interface->name)) { |
1fad8738 BM |
274 | /* |
275 | * Found: name is in either the static list | |
276 | * or was added at runtime | |
277 | */ | |
b0ed7a91 LM |
278 | if (next_interface->flags & ACPI_OSI_DYNAMIC) { |
279 | ||
280 | /* Interface was added dynamically, remove and free it */ | |
281 | ||
282 | if (previous_interface == next_interface) { | |
283 | acpi_gbl_supported_interfaces = | |
284 | next_interface->next; | |
285 | } else { | |
286 | previous_interface->next = | |
287 | next_interface->next; | |
288 | } | |
289 | ||
290 | ACPI_FREE(next_interface->name); | |
291 | ACPI_FREE(next_interface); | |
292 | } else { | |
293 | /* | |
1fad8738 BM |
294 | * Interface is in static list. If marked invalid, then |
295 | * it does not actually exist. Else, mark it invalid. | |
b0ed7a91 LM |
296 | */ |
297 | if (next_interface->flags & ACPI_OSI_INVALID) { | |
298 | return (AE_NOT_EXIST); | |
299 | } | |
300 | ||
301 | next_interface->flags |= ACPI_OSI_INVALID; | |
302 | } | |
303 | ||
304 | return (AE_OK); | |
305 | } | |
306 | ||
307 | previous_interface = next_interface; | |
308 | next_interface = next_interface->next; | |
309 | } | |
310 | ||
311 | /* Interface was not found */ | |
312 | ||
313 | return (AE_NOT_EXIST); | |
314 | } | |
315 | ||
2cf9f5bc LZ |
316 | /******************************************************************************* |
317 | * | |
318 | * FUNCTION: acpi_ut_update_interfaces | |
319 | * | |
320 | * PARAMETERS: action - Actions to be performed during the | |
321 | * update | |
322 | * | |
323 | * RETURN: Status | |
324 | * | |
325 | * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor | |
326 | * strings or/and feature group strings. | |
327 | * Caller MUST hold acpi_gbl_osi_mutex | |
328 | * | |
329 | ******************************************************************************/ | |
330 | ||
331 | acpi_status acpi_ut_update_interfaces(u8 action) | |
332 | { | |
333 | struct acpi_interface_info *next_interface; | |
334 | ||
335 | next_interface = acpi_gbl_supported_interfaces; | |
336 | while (next_interface) { | |
337 | if (((next_interface->flags & ACPI_OSI_FEATURE) && | |
338 | (action & ACPI_FEATURE_STRINGS)) || | |
339 | (!(next_interface->flags & ACPI_OSI_FEATURE) && | |
340 | (action & ACPI_VENDOR_STRINGS))) { | |
341 | if (action & ACPI_DISABLE_INTERFACES) { | |
342 | ||
343 | /* Mark the interfaces as invalid */ | |
344 | ||
345 | next_interface->flags |= ACPI_OSI_INVALID; | |
346 | } else { | |
347 | /* Mark the interfaces as valid */ | |
348 | ||
349 | next_interface->flags &= ~ACPI_OSI_INVALID; | |
350 | } | |
351 | } | |
352 | ||
353 | next_interface = next_interface->next; | |
354 | } | |
355 | ||
356 | return (AE_OK); | |
357 | } | |
358 | ||
b0ed7a91 LM |
359 | /******************************************************************************* |
360 | * | |
361 | * FUNCTION: acpi_ut_get_interface | |
362 | * | |
363 | * PARAMETERS: interface_name - The interface to find | |
364 | * | |
365 | * RETURN: struct acpi_interface_info if found. NULL if not found. | |
366 | * | |
367 | * DESCRIPTION: Search for the specified interface name in the global list. | |
368 | * Caller MUST hold acpi_gbl_osi_mutex | |
369 | * | |
370 | ******************************************************************************/ | |
371 | ||
372 | struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name) | |
373 | { | |
374 | struct acpi_interface_info *next_interface; | |
375 | ||
376 | next_interface = acpi_gbl_supported_interfaces; | |
377 | while (next_interface) { | |
4fa4616e | 378 | if (!strcmp(interface_name, next_interface->name)) { |
b0ed7a91 LM |
379 | return (next_interface); |
380 | } | |
381 | ||
382 | next_interface = next_interface->next; | |
383 | } | |
384 | ||
385 | return (NULL); | |
386 | } | |
387 | ||
388 | /******************************************************************************* | |
389 | * | |
390 | * FUNCTION: acpi_ut_osi_implementation | |
391 | * | |
392 | * PARAMETERS: walk_state - Current walk state | |
393 | * | |
394 | * RETURN: Status | |
955f485d BM |
395 | * Integer: TRUE (0) if input string is matched |
396 | * FALSE (-1) if string is not matched | |
b0ed7a91 LM |
397 | * |
398 | * DESCRIPTION: Implementation of the _OSI predefined control method. When | |
399 | * an invocation of _OSI is encountered in the system AML, | |
400 | * control is transferred to this function. | |
401 | * | |
955f485d BM |
402 | * (August 2016) |
403 | * Note: _OSI is now defined to return "Ones" to indicate a match, for | |
404 | * compatibility with other ACPI implementations. On a 32-bit DSDT, Ones | |
405 | * is 0xFFFFFFFF. On a 64-bit DSDT, Ones is 0xFFFFFFFFFFFFFFFF | |
406 | * (ACPI_UINT64_MAX). | |
407 | * | |
408 | * This function always returns ACPI_UINT64_MAX for TRUE, and later code | |
409 | * will truncate this to 32 bits if necessary. | |
410 | * | |
b0ed7a91 LM |
411 | ******************************************************************************/ |
412 | ||
f5c1e1c5 | 413 | acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state) |
b0ed7a91 LM |
414 | { |
415 | union acpi_operand_object *string_desc; | |
416 | union acpi_operand_object *return_desc; | |
417 | struct acpi_interface_info *interface_info; | |
418 | acpi_interface_handler interface_handler; | |
388a9902 | 419 | acpi_status status; |
955f485d | 420 | u64 return_value; |
b0ed7a91 LM |
421 | |
422 | ACPI_FUNCTION_TRACE(ut_osi_implementation); | |
423 | ||
424 | /* Validate the string input argument (from the AML caller) */ | |
425 | ||
426 | string_desc = walk_state->arguments[0].object; | |
427 | if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) { | |
428 | return_ACPI_STATUS(AE_TYPE); | |
429 | } | |
430 | ||
431 | /* Create a return object */ | |
432 | ||
433 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); | |
434 | if (!return_desc) { | |
435 | return_ACPI_STATUS(AE_NO_MEMORY); | |
436 | } | |
437 | ||
438 | /* Default return value is 0, NOT SUPPORTED */ | |
439 | ||
440 | return_value = 0; | |
388a9902 JK |
441 | status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER); |
442 | if (ACPI_FAILURE(status)) { | |
3aa2eeac JK |
443 | acpi_ut_remove_reference(return_desc); |
444 | return_ACPI_STATUS(status); | |
388a9902 | 445 | } |
b0ed7a91 LM |
446 | |
447 | /* Lookup the interface in the global _OSI list */ | |
448 | ||
449 | interface_info = acpi_ut_get_interface(string_desc->string.pointer); | |
450 | if (interface_info && !(interface_info->flags & ACPI_OSI_INVALID)) { | |
451 | /* | |
452 | * The interface is supported. | |
453 | * Update the osi_data if necessary. We keep track of the latest | |
454 | * version of Windows that has been requested by the BIOS. | |
455 | */ | |
456 | if (interface_info->value > acpi_gbl_osi_data) { | |
457 | acpi_gbl_osi_data = interface_info->value; | |
458 | } | |
459 | ||
955f485d | 460 | return_value = ACPI_UINT64_MAX; |
b0ed7a91 LM |
461 | } |
462 | ||
463 | acpi_os_release_mutex(acpi_gbl_osi_mutex); | |
464 | ||
465 | /* | |
466 | * Invoke an optional _OSI interface handler. The host OS may wish | |
467 | * to do some interface-specific handling. For example, warn about | |
468 | * certain interfaces or override the true/false support value. | |
469 | */ | |
470 | interface_handler = acpi_gbl_interface_handler; | |
471 | if (interface_handler) { | |
955f485d BM |
472 | if (interface_handler |
473 | (string_desc->string.pointer, (u32)return_value)) { | |
474 | return_value = ACPI_UINT64_MAX; | |
475 | } | |
b0ed7a91 LM |
476 | } |
477 | ||
478 | ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO, | |
479 | "ACPI: BIOS _OSI(\"%s\") is %ssupported\n", | |
480 | string_desc->string.pointer, | |
481 | return_value == 0 ? "not " : "")); | |
482 | ||
483 | /* Complete the return object */ | |
484 | ||
485 | return_desc->integer.value = return_value; | |
486 | walk_state->return_desc = return_desc; | |
487 | return_ACPI_STATUS(AE_OK); | |
488 | } |