xref: /freebsd/sys/contrib/dev/acpica/components/utilities/utpredef.c (revision 36712a94975f5bd0d26c85377283b49a2369c82f)
1 /******************************************************************************
2  *
3  * Module Name: utpredef - support functions for predefined names
4  *
5  *****************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2019, Intel Corp.
12  * All rights reserved.
13  *
14  * 2. License
15  *
16  * 2.1. This is your license from Intel Corp. under its intellectual property
17  * rights. You may have additional license terms from the party that provided
18  * you this software, covering your right to use that party's intellectual
19  * property rights.
20  *
21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22  * copy of the source code appearing in this file ("Covered Code") an
23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24  * base code distributed originally by Intel ("Original Intel Code") to copy,
25  * make derivatives, distribute, use and display any portion of the Covered
26  * Code in any form, with the right to sublicense such rights; and
27  *
28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29  * license (with the right to sublicense), under only those claims of Intel
30  * patents that are infringed by the Original Intel Code, to make, use, sell,
31  * offer to sell, and import the Covered Code and derivative works thereof
32  * solely to the minimum extent necessary to exercise the above copyright
33  * license, and in no event shall the patent license extend to any additions
34  * to or modifications of the Original Intel Code. No other license or right
35  * is granted directly or by implication, estoppel or otherwise;
36  *
37  * The above copyright and patent license is granted only if the following
38  * conditions are met:
39  *
40  * 3. Conditions
41  *
42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43  * Redistribution of source code of any substantial portion of the Covered
44  * Code or modification with rights to further distribute source must include
45  * the above Copyright Notice, the above License, this list of Conditions,
46  * and the following Disclaimer and Export Compliance provision. In addition,
47  * Licensee must cause all Covered Code to which Licensee contributes to
48  * contain a file documenting the changes Licensee made to create that Covered
49  * Code and the date of any change. Licensee must include in that file the
50  * documentation of any changes made by any predecessor Licensee. Licensee
51  * must include a prominent statement that the modification is derived,
52  * directly or indirectly, from Original Intel Code.
53  *
54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55  * Redistribution of source code of any substantial portion of the Covered
56  * Code or modification without rights to further distribute source must
57  * include the following Disclaimer and Export Compliance provision in the
58  * documentation and/or other materials provided with distribution. In
59  * addition, Licensee may not authorize further sublicense of source of any
60  * portion of the Covered Code, and must include terms to the effect that the
61  * license from Licensee to its licensee is limited to the intellectual
62  * property embodied in the software Licensee provides to its licensee, and
63  * not to intellectual property embodied in modifications its licensee may
64  * make.
65  *
66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
67  * substantial portion of the Covered Code or modification must reproduce the
68  * above Copyright Notice, and the following Disclaimer and Export Compliance
69  * provision in the documentation and/or other materials provided with the
70  * distribution.
71  *
72  * 3.4. Intel retains all right, title, and interest in and to the Original
73  * Intel Code.
74  *
75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76  * Intel shall be used in advertising or otherwise to promote the sale, use or
77  * other dealings in products derived from or relating to the Covered Code
78  * without prior written authorization from Intel.
79  *
80  * 4. Disclaimer and Export Compliance
81  *
82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88  * PARTICULAR PURPOSE.
89  *
90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97  * LIMITED REMEDY.
98  *
99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
100  * software or system incorporating such software without first obtaining any
101  * required license or other approval from the U. S. Department of Commerce or
102  * any other agency or department of the United States Government. In the
103  * event Licensee exports any such software from the United States or
104  * re-exports any such software from a foreign destination, Licensee shall
105  * ensure that the distribution and export/re-export of the software is in
106  * compliance with all laws, regulations, orders, or other restrictions of the
107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108  * any of its subsidiaries will export/re-export any technical data, process,
109  * software, or service, directly or indirectly, to any country for which the
110  * United States government or any agency thereof requires an export license,
111  * other governmental approval, or letter of assurance, without first obtaining
112  * such license, approval or letter.
113  *
114  *****************************************************************************
115  *
116  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 #include <contrib/dev/acpica/include/acpi.h>
153 #include <contrib/dev/acpica/include/accommon.h>
154 #include <contrib/dev/acpica/include/acpredef.h>
155 
156 
157 #define _COMPONENT          ACPI_UTILITIES
158         ACPI_MODULE_NAME    ("utpredef")
159 
160 
161 /*
162  * Names for the types that can be returned by the predefined objects.
163  * Used for warning messages. Must be in the same order as the ACPI_RTYPEs
164  */
165 static const char   *UtRtypeNames[] =
166 {
167     "/Integer",
168     "/String",
169     "/Buffer",
170     "/Package",
171     "/Reference",
172 };
173 
174 
175 /*******************************************************************************
176  *
177  * FUNCTION:    AcpiUtGetNextPredefinedMethod
178  *
179  * PARAMETERS:  ThisName            - Entry in the predefined method/name table
180  *
181  * RETURN:      Pointer to next entry in predefined table.
182  *
183  * DESCRIPTION: Get the next entry in the predefine method table. Handles the
184  *              cases where a package info entry follows a method name that
185  *              returns a package.
186  *
187  ******************************************************************************/
188 
189 const ACPI_PREDEFINED_INFO *
190 AcpiUtGetNextPredefinedMethod (
191     const ACPI_PREDEFINED_INFO  *ThisName)
192 {
193 
194     /*
195      * Skip next entry in the table if this name returns a Package
196      * (next entry contains the package info)
197      */
198     if ((ThisName->Info.ExpectedBtypes & ACPI_RTYPE_PACKAGE) &&
199         (ThisName->Info.ExpectedBtypes != ACPI_RTYPE_ALL))
200     {
201         ThisName++;
202     }
203 
204     ThisName++;
205     return (ThisName);
206 }
207 
208 
209 /*******************************************************************************
210  *
211  * FUNCTION:    AcpiUtMatchPredefinedMethod
212  *
213  * PARAMETERS:  Name                - Name to find
214  *
215  * RETURN:      Pointer to entry in predefined table. NULL indicates not found.
216  *
217  * DESCRIPTION: Check an object name against the predefined object list.
218  *
219  ******************************************************************************/
220 
221 const ACPI_PREDEFINED_INFO *
222 AcpiUtMatchPredefinedMethod (
223     char                        *Name)
224 {
225     const ACPI_PREDEFINED_INFO  *ThisName;
226 
227 
228     /* Quick check for a predefined name, first character must be underscore */
229 
230     if (Name[0] != '_')
231     {
232         return (NULL);
233     }
234 
235     /* Search info table for a predefined method/object name */
236 
237     ThisName = AcpiGbl_PredefinedMethods;
238     while (ThisName->Info.Name[0])
239     {
240         if (ACPI_COMPARE_NAMESEG (Name, ThisName->Info.Name))
241         {
242             return (ThisName);
243         }
244 
245         ThisName = AcpiUtGetNextPredefinedMethod (ThisName);
246     }
247 
248     return (NULL); /* Not found */
249 }
250 
251 
252 /*******************************************************************************
253  *
254  * FUNCTION:    AcpiUtGetExpectedReturnTypes
255  *
256  * PARAMETERS:  Buffer              - Where the formatted string is returned
257  *              ExpectedBTypes      - Bitfield of expected data types
258  *
259  * RETURN:      Formatted string in Buffer.
260  *
261  * DESCRIPTION: Format the expected object types into a printable string.
262  *
263  ******************************************************************************/
264 
265 void
266 AcpiUtGetExpectedReturnTypes (
267     char                    *Buffer,
268     UINT32                  ExpectedBtypes)
269 {
270     UINT32                  ThisRtype;
271     UINT32                  i;
272     UINT32                  j;
273 
274 
275     if (!ExpectedBtypes)
276     {
277         strcpy (Buffer, "NONE");
278         return;
279     }
280 
281     j = 1;
282     Buffer[0] = 0;
283     ThisRtype = ACPI_RTYPE_INTEGER;
284 
285     for (i = 0; i < ACPI_NUM_RTYPES; i++)
286     {
287         /* If one of the expected types, concatenate the name of this type */
288 
289         if (ExpectedBtypes & ThisRtype)
290         {
291             strcat (Buffer, &UtRtypeNames[i][j]);
292             j = 0;              /* Use name separator from now on */
293         }
294 
295         ThisRtype <<= 1;    /* Next Rtype */
296     }
297 }
298 
299 
300 /*******************************************************************************
301  *
302  * The remaining functions are used by iASL and AcpiHelp only
303  *
304  ******************************************************************************/
305 
306 #if (defined ACPI_ASL_COMPILER || defined ACPI_HELP_APP)
307 
308 /* Local prototypes */
309 
310 static UINT32
311 AcpiUtGetArgumentTypes (
312     char                    *Buffer,
313     UINT16                  ArgumentTypes);
314 
315 
316 /* Types that can be returned externally by a predefined name */
317 
318 static const char   *UtExternalTypeNames[] = /* Indexed by ACPI_TYPE_* */
319 {
320     ", UNSUPPORTED-TYPE",
321     ", Integer",
322     ", String",
323     ", Buffer",
324     ", Package"
325 };
326 
327 /* Bit widths for resource descriptor predefined names */
328 
329 static const char   *UtResourceTypeNames[] =
330 {
331     "/1",
332     "/2",
333     "/3",
334     "/8",
335     "/16",
336     "/32",
337     "/64",
338     "/variable",
339 };
340 
341 
342 /*******************************************************************************
343  *
344  * FUNCTION:    AcpiUtMatchResourceName
345  *
346  * PARAMETERS:  Name                - Name to find
347  *
348  * RETURN:      Pointer to entry in the resource table. NULL indicates not
349  *              found.
350  *
351  * DESCRIPTION: Check an object name against the predefined resource
352  *              descriptor object list.
353  *
354  ******************************************************************************/
355 
356 const ACPI_PREDEFINED_INFO *
357 AcpiUtMatchResourceName (
358     char                        *Name)
359 {
360     const ACPI_PREDEFINED_INFO  *ThisName;
361 
362 
363     /*
364      * Quick check for a predefined name, first character must
365      * be underscore
366      */
367     if (Name[0] != '_')
368     {
369         return (NULL);
370     }
371 
372     /* Search info table for a predefined method/object name */
373 
374     ThisName = AcpiGbl_ResourceNames;
375     while (ThisName->Info.Name[0])
376     {
377         if (ACPI_COMPARE_NAMESEG (Name, ThisName->Info.Name))
378         {
379             return (ThisName);
380         }
381 
382         ThisName++;
383     }
384 
385     return (NULL); /* Not found */
386 }
387 
388 
389 /*******************************************************************************
390  *
391  * FUNCTION:    AcpiUtDisplayPredefinedMethod
392  *
393  * PARAMETERS:  Buffer              - Scratch buffer for this function
394  *              ThisName            - Entry in the predefined method/name table
395  *              MultiLine           - TRUE if output should be on >1 line
396  *
397  * RETURN:      None
398  *
399  * DESCRIPTION: Display information about a predefined method. Number and
400  *              type of the input arguments, and expected type(s) for the
401  *              return value, if any.
402  *
403  ******************************************************************************/
404 
405 void
406 AcpiUtDisplayPredefinedMethod (
407     char                        *Buffer,
408     const ACPI_PREDEFINED_INFO  *ThisName,
409     BOOLEAN                     MultiLine)
410 {
411     UINT32                      ArgCount;
412 
413     /*
414      * Get the argument count and the string buffer
415      * containing all argument types
416      */
417     ArgCount = AcpiUtGetArgumentTypes (Buffer,
418         ThisName->Info.ArgumentList);
419 
420     if (MultiLine)
421     {
422         printf ("      ");
423     }
424 
425     printf ("%4.4s    Requires %s%u argument%s",
426         ThisName->Info.Name,
427         (ThisName->Info.ArgumentList & ARG_COUNT_IS_MINIMUM) ?
428             "(at least) " : "",
429         ArgCount, ArgCount != 1 ? "s" : "");
430 
431     /* Display the types for any arguments */
432 
433     if (ArgCount > 0)
434     {
435         printf (" (%s)", Buffer);
436     }
437 
438     if (MultiLine)
439     {
440         printf ("\n    ");
441     }
442 
443     /* Get the return value type(s) allowed */
444 
445     if (ThisName->Info.ExpectedBtypes)
446     {
447         AcpiUtGetExpectedReturnTypes (Buffer, ThisName->Info.ExpectedBtypes);
448         printf ("  Return value types: %s\n", Buffer);
449     }
450     else
451     {
452         printf ("  No return value\n");
453     }
454 }
455 
456 
457 /*******************************************************************************
458  *
459  * FUNCTION:    AcpiUtGetArgumentTypes
460  *
461  * PARAMETERS:  Buffer              - Where to return the formatted types
462  *              ArgumentTypes       - Types field for this method
463  *
464  * RETURN:      Count - the number of arguments required for this method
465  *
466  * DESCRIPTION: Format the required data types for this method (Integer,
467  *              String, Buffer, or Package) and return the required argument
468  *              count.
469  *
470  ******************************************************************************/
471 
472 static UINT32
473 AcpiUtGetArgumentTypes (
474     char                    *Buffer,
475     UINT16                  ArgumentTypes)
476 {
477     UINT16                  ThisArgumentType;
478     UINT16                  SubIndex;
479     UINT16                  ArgCount;
480     UINT32                  i;
481 
482 
483     *Buffer = 0;
484     SubIndex = 2;
485 
486     /* First field in the types list is the count of args to follow */
487 
488     ArgCount = METHOD_GET_ARG_COUNT (ArgumentTypes);
489     if (ArgCount > METHOD_PREDEF_ARGS_MAX)
490     {
491         printf ("**** Invalid argument count (%u) "
492             "in predefined info structure\n", ArgCount);
493         return (ArgCount);
494     }
495 
496     /* Get each argument from the list, convert to ascii, store to buffer */
497 
498     for (i = 0; i < ArgCount; i++)
499     {
500         ThisArgumentType = METHOD_GET_NEXT_TYPE (ArgumentTypes);
501 
502         if (!ThisArgumentType || (ThisArgumentType > METHOD_MAX_ARG_TYPE))
503         {
504             printf ("**** Invalid argument type (%u) "
505                 "in predefined info structure\n", ThisArgumentType);
506             return (ArgCount);
507         }
508 
509         strcat (Buffer, UtExternalTypeNames[ThisArgumentType] + SubIndex);
510         SubIndex = 0;
511     }
512 
513     return (ArgCount);
514 }
515 
516 
517 /*******************************************************************************
518  *
519  * FUNCTION:    AcpiUtGetResourceBitWidth
520  *
521  * PARAMETERS:  Buffer              - Where the formatted string is returned
522  *              Types               - Bitfield of expected data types
523  *
524  * RETURN:      Count of return types. Formatted string in Buffer.
525  *
526  * DESCRIPTION: Format the resource bit widths into a printable string.
527  *
528  ******************************************************************************/
529 
530 UINT32
531 AcpiUtGetResourceBitWidth (
532     char                    *Buffer,
533     UINT16                  Types)
534 {
535     UINT32                  i;
536     UINT16                  SubIndex;
537     UINT32                  Found;
538 
539 
540     *Buffer = 0;
541     SubIndex = 1;
542     Found = 0;
543 
544     for (i = 0; i < NUM_RESOURCE_WIDTHS; i++)
545     {
546         if (Types & 1)
547         {
548             strcat (Buffer, &(UtResourceTypeNames[i][SubIndex]));
549             SubIndex = 0;
550             Found++;
551         }
552 
553         Types >>= 1;
554     }
555 
556     return (Found);
557 }
558 #endif
559