1 /******************************************************************************
2  *
3  * Module Name: utaddress - OpRegion address range check
4  *
5  *****************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2018, 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 "acpi.h"
153 #include "accommon.h"
154 #include "acnamesp.h"
155 
156 
157 #define _COMPONENT          ACPI_UTILITIES
158         ACPI_MODULE_NAME    ("utaddress")
159 
160 
161 /*******************************************************************************
162  *
163  * FUNCTION:    AcpiUtAddAddressRange
164  *
165  * PARAMETERS:  SpaceId             - Address space ID
166  *              Address             - OpRegion start address
167  *              Length              - OpRegion length
168  *              RegionNode          - OpRegion namespace node
169  *
170  * RETURN:      Status
171  *
172  * DESCRIPTION: Add the Operation Region address range to the global list.
173  *              The only supported Space IDs are Memory and I/O. Called when
174  *              the OpRegion address/length operands are fully evaluated.
175  *
176  * MUTEX:       Locks the namespace
177  *
178  * NOTE: Because this interface is only called when an OpRegion argument
179  * list is evaluated, there cannot be any duplicate RegionNodes.
180  * Duplicate Address/Length values are allowed, however, so that multiple
181  * address conflicts can be detected.
182  *
183  ******************************************************************************/
184 
185 ACPI_STATUS
AcpiUtAddAddressRange(ACPI_ADR_SPACE_TYPE SpaceId,ACPI_PHYSICAL_ADDRESS Address,UINT32 Length,ACPI_NAMESPACE_NODE * RegionNode)186 AcpiUtAddAddressRange (
187     ACPI_ADR_SPACE_TYPE     SpaceId,
188     ACPI_PHYSICAL_ADDRESS   Address,
189     UINT32                  Length,
190     ACPI_NAMESPACE_NODE     *RegionNode)
191 {
192     ACPI_ADDRESS_RANGE      *RangeInfo;
193 
194 
195     ACPI_FUNCTION_TRACE (UtAddAddressRange);
196 
197 
198     if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
199         (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO))
200     {
201         return_ACPI_STATUS (AE_OK);
202     }
203 
204     /* Allocate/init a new info block, add it to the appropriate list */
205 
206     RangeInfo = ACPI_ALLOCATE (sizeof (ACPI_ADDRESS_RANGE));
207     if (!RangeInfo)
208     {
209         return_ACPI_STATUS (AE_NO_MEMORY);
210     }
211 
212     RangeInfo->StartAddress = Address;
213     RangeInfo->EndAddress = (Address + Length - 1);
214     RangeInfo->RegionNode = RegionNode;
215 
216     RangeInfo->Next = AcpiGbl_AddressRangeList[SpaceId];
217     AcpiGbl_AddressRangeList[SpaceId] = RangeInfo;
218 
219     ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
220         "\nAdded [%4.4s] address range: 0x%8.8X%8.8X-0x%8.8X%8.8X\n",
221         AcpiUtGetNodeName (RangeInfo->RegionNode),
222         ACPI_FORMAT_UINT64 (Address),
223         ACPI_FORMAT_UINT64 (RangeInfo->EndAddress)));
224 
225     return_ACPI_STATUS (AE_OK);
226 }
227 
228 
229 /*******************************************************************************
230  *
231  * FUNCTION:    AcpiUtRemoveAddressRange
232  *
233  * PARAMETERS:  SpaceId             - Address space ID
234  *              RegionNode          - OpRegion namespace node
235  *
236  * RETURN:      None
237  *
238  * DESCRIPTION: Remove the Operation Region from the global list. The only
239  *              supported Space IDs are Memory and I/O. Called when an
240  *              OpRegion is deleted.
241  *
242  * MUTEX:       Assumes the namespace is locked
243  *
244  ******************************************************************************/
245 
246 void
AcpiUtRemoveAddressRange(ACPI_ADR_SPACE_TYPE SpaceId,ACPI_NAMESPACE_NODE * RegionNode)247 AcpiUtRemoveAddressRange (
248     ACPI_ADR_SPACE_TYPE     SpaceId,
249     ACPI_NAMESPACE_NODE     *RegionNode)
250 {
251     ACPI_ADDRESS_RANGE      *RangeInfo;
252     ACPI_ADDRESS_RANGE      *Prev;
253 
254 
255     ACPI_FUNCTION_TRACE (UtRemoveAddressRange);
256 
257 
258     if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
259         (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO))
260     {
261         return_VOID;
262     }
263 
264     /* Get the appropriate list head and check the list */
265 
266     RangeInfo = Prev = AcpiGbl_AddressRangeList[SpaceId];
267     while (RangeInfo)
268     {
269         if (RangeInfo->RegionNode == RegionNode)
270         {
271             if (RangeInfo == Prev) /* Found at list head */
272             {
273                 AcpiGbl_AddressRangeList[SpaceId] = RangeInfo->Next;
274             }
275             else
276             {
277                 Prev->Next = RangeInfo->Next;
278             }
279 
280             ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
281                 "\nRemoved [%4.4s] address range: 0x%8.8X%8.8X-0x%8.8X%8.8X\n",
282                 AcpiUtGetNodeName (RangeInfo->RegionNode),
283                 ACPI_FORMAT_UINT64 (RangeInfo->StartAddress),
284                 ACPI_FORMAT_UINT64 (RangeInfo->EndAddress)));
285 
286             ACPI_FREE (RangeInfo);
287             return_VOID;
288         }
289 
290         Prev = RangeInfo;
291         RangeInfo = RangeInfo->Next;
292     }
293 
294     return_VOID;
295 }
296 
297 
298 /*******************************************************************************
299  *
300  * FUNCTION:    AcpiUtCheckAddressRange
301  *
302  * PARAMETERS:  SpaceId             - Address space ID
303  *              Address             - Start address
304  *              Length              - Length of address range
305  *              Warn                - TRUE if warning on overlap desired
306  *
307  * RETURN:      Count of the number of conflicts detected. Zero is always
308  *              returned for Space IDs other than Memory or I/O.
309  *
310  * DESCRIPTION: Check if the input address range overlaps any of the
311  *              ASL operation region address ranges. The only supported
312  *              Space IDs are Memory and I/O.
313  *
314  * MUTEX:       Assumes the namespace is locked.
315  *
316  ******************************************************************************/
317 
318 UINT32
AcpiUtCheckAddressRange(ACPI_ADR_SPACE_TYPE SpaceId,ACPI_PHYSICAL_ADDRESS Address,UINT32 Length,BOOLEAN Warn)319 AcpiUtCheckAddressRange (
320     ACPI_ADR_SPACE_TYPE     SpaceId,
321     ACPI_PHYSICAL_ADDRESS   Address,
322     UINT32                  Length,
323     BOOLEAN                 Warn)
324 {
325     ACPI_ADDRESS_RANGE      *RangeInfo;
326     ACPI_PHYSICAL_ADDRESS   EndAddress;
327     char                    *Pathname;
328     UINT32                  OverlapCount = 0;
329 
330 
331     ACPI_FUNCTION_TRACE (UtCheckAddressRange);
332 
333 
334     if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
335         (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO))
336     {
337         return_UINT32 (0);
338     }
339 
340     RangeInfo = AcpiGbl_AddressRangeList[SpaceId];
341     EndAddress = Address + Length - 1;
342 
343     /* Check entire list for all possible conflicts */
344 
345     while (RangeInfo)
346     {
347         /*
348          * Check if the requested address/length overlaps this
349          * address range. There are four cases to consider:
350          *
351          * 1) Input address/length is contained completely in the
352          *    address range
353          * 2) Input address/length overlaps range at the range start
354          * 3) Input address/length overlaps range at the range end
355          * 4) Input address/length completely encompasses the range
356          */
357         if ((Address <= RangeInfo->EndAddress) &&
358             (EndAddress >= RangeInfo->StartAddress))
359         {
360             /* Found an address range overlap */
361 
362             OverlapCount++;
363             if (Warn)   /* Optional warning message */
364             {
365                 Pathname = AcpiNsGetNormalizedPathname (RangeInfo->RegionNode, TRUE);
366 
367                 ACPI_WARNING ((AE_INFO,
368                     "%s range 0x%8.8X%8.8X-0x%8.8X%8.8X conflicts with OpRegion 0x%8.8X%8.8X-0x%8.8X%8.8X (%s)",
369                     AcpiUtGetRegionName (SpaceId),
370                     ACPI_FORMAT_UINT64 (Address),
371                     ACPI_FORMAT_UINT64 (EndAddress),
372                     ACPI_FORMAT_UINT64 (RangeInfo->StartAddress),
373                     ACPI_FORMAT_UINT64 (RangeInfo->EndAddress),
374                     Pathname));
375                 ACPI_FREE (Pathname);
376             }
377         }
378 
379         RangeInfo = RangeInfo->Next;
380     }
381 
382     return_UINT32 (OverlapCount);
383 }
384 
385 
386 /*******************************************************************************
387  *
388  * FUNCTION:    AcpiUtDeleteAddressLists
389  *
390  * PARAMETERS:  None
391  *
392  * RETURN:      None
393  *
394  * DESCRIPTION: Delete all global address range lists (called during
395  *              subsystem shutdown).
396  *
397  ******************************************************************************/
398 
399 void
AcpiUtDeleteAddressLists(void)400 AcpiUtDeleteAddressLists (
401     void)
402 {
403     ACPI_ADDRESS_RANGE      *Next;
404     ACPI_ADDRESS_RANGE      *RangeInfo;
405     int                     i;
406 
407 
408     /* Delete all elements in all address range lists */
409 
410     for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++)
411     {
412         Next = AcpiGbl_AddressRangeList[i];
413 
414         while (Next)
415         {
416             RangeInfo = Next;
417             Next = RangeInfo->Next;
418             ACPI_FREE (RangeInfo);
419         }
420 
421         AcpiGbl_AddressRangeList[i] = NULL;
422     }
423 }
424