1 /******************************************************************************
2 *
3 * Module Name: utaddress - OpRegion address range check
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2016, Intel Corp.
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.h"
45 #include "accommon.h"
46 #include "acnamesp.h"
47
48
49 #define _COMPONENT ACPI_UTILITIES
50 ACPI_MODULE_NAME ("utaddress")
51
52
53 /*******************************************************************************
54 *
55 * FUNCTION: AcpiUtAddAddressRange
56 *
57 * PARAMETERS: SpaceId - Address space ID
58 * Address - OpRegion start address
59 * Length - OpRegion length
60 * RegionNode - OpRegion namespace node
61 *
62 * RETURN: Status
63 *
64 * DESCRIPTION: Add the Operation Region address range to the global list.
65 * The only supported Space IDs are Memory and I/O. Called when
66 * the OpRegion address/length operands are fully evaluated.
67 *
68 * MUTEX: Locks the namespace
69 *
70 * NOTE: Because this interface is only called when an OpRegion argument
71 * list is evaluated, there cannot be any duplicate RegionNodes.
72 * Duplicate Address/Length values are allowed, however, so that multiple
73 * address conflicts can be detected.
74 *
75 ******************************************************************************/
76
77 ACPI_STATUS
AcpiUtAddAddressRange(ACPI_ADR_SPACE_TYPE SpaceId,ACPI_PHYSICAL_ADDRESS Address,UINT32 Length,ACPI_NAMESPACE_NODE * RegionNode)78 AcpiUtAddAddressRange (
79 ACPI_ADR_SPACE_TYPE SpaceId,
80 ACPI_PHYSICAL_ADDRESS Address,
81 UINT32 Length,
82 ACPI_NAMESPACE_NODE *RegionNode)
83 {
84 ACPI_ADDRESS_RANGE *RangeInfo;
85 ACPI_STATUS Status;
86
87
88 ACPI_FUNCTION_TRACE (UtAddAddressRange);
89
90
91 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
92 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO))
93 {
94 return_ACPI_STATUS (AE_OK);
95 }
96
97 /* Allocate/init a new info block, add it to the appropriate list */
98
99 RangeInfo = ACPI_ALLOCATE (sizeof (ACPI_ADDRESS_RANGE));
100 if (!RangeInfo)
101 {
102 return_ACPI_STATUS (AE_NO_MEMORY);
103 }
104
105 RangeInfo->StartAddress = Address;
106 RangeInfo->EndAddress = (Address + Length - 1);
107 RangeInfo->RegionNode = RegionNode;
108
109 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
110 if (ACPI_FAILURE (Status))
111 {
112 ACPI_FREE (RangeInfo);
113 return_ACPI_STATUS (Status);
114 }
115
116 RangeInfo->Next = AcpiGbl_AddressRangeList[SpaceId];
117 AcpiGbl_AddressRangeList[SpaceId] = RangeInfo;
118
119 ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
120 "\nAdded [%4.4s] address range: 0x%8.8X%8.8X-0x%8.8X%8.8X\n",
121 AcpiUtGetNodeName (RangeInfo->RegionNode),
122 ACPI_FORMAT_UINT64 (Address),
123 ACPI_FORMAT_UINT64 (RangeInfo->EndAddress)));
124
125 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
126 return_ACPI_STATUS (AE_OK);
127 }
128
129
130 /*******************************************************************************
131 *
132 * FUNCTION: AcpiUtRemoveAddressRange
133 *
134 * PARAMETERS: SpaceId - Address space ID
135 * RegionNode - OpRegion namespace node
136 *
137 * RETURN: None
138 *
139 * DESCRIPTION: Remove the Operation Region from the global list. The only
140 * supported Space IDs are Memory and I/O. Called when an
141 * OpRegion is deleted.
142 *
143 * MUTEX: Assumes the namespace is locked
144 *
145 ******************************************************************************/
146
147 void
AcpiUtRemoveAddressRange(ACPI_ADR_SPACE_TYPE SpaceId,ACPI_NAMESPACE_NODE * RegionNode)148 AcpiUtRemoveAddressRange (
149 ACPI_ADR_SPACE_TYPE SpaceId,
150 ACPI_NAMESPACE_NODE *RegionNode)
151 {
152 ACPI_ADDRESS_RANGE *RangeInfo;
153 ACPI_ADDRESS_RANGE *Prev;
154
155
156 ACPI_FUNCTION_TRACE (UtRemoveAddressRange);
157
158
159 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
160 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO))
161 {
162 return_VOID;
163 }
164
165 /* Get the appropriate list head and check the list */
166
167 RangeInfo = Prev = AcpiGbl_AddressRangeList[SpaceId];
168 while (RangeInfo)
169 {
170 if (RangeInfo->RegionNode == RegionNode)
171 {
172 if (RangeInfo == Prev) /* Found at list head */
173 {
174 AcpiGbl_AddressRangeList[SpaceId] = RangeInfo->Next;
175 }
176 else
177 {
178 Prev->Next = RangeInfo->Next;
179 }
180
181 ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
182 "\nRemoved [%4.4s] address range: 0x%8.8X%8.8X-0x%8.8X%8.8X\n",
183 AcpiUtGetNodeName (RangeInfo->RegionNode),
184 ACPI_FORMAT_UINT64 (RangeInfo->StartAddress),
185 ACPI_FORMAT_UINT64 (RangeInfo->EndAddress)));
186
187 ACPI_FREE (RangeInfo);
188 return_VOID;
189 }
190
191 Prev = RangeInfo;
192 RangeInfo = RangeInfo->Next;
193 }
194
195 return_VOID;
196 }
197
198
199 /*******************************************************************************
200 *
201 * FUNCTION: AcpiUtCheckAddressRange
202 *
203 * PARAMETERS: SpaceId - Address space ID
204 * Address - Start address
205 * Length - Length of address range
206 * Warn - TRUE if warning on overlap desired
207 *
208 * RETURN: Count of the number of conflicts detected. Zero is always
209 * returned for Space IDs other than Memory or I/O.
210 *
211 * DESCRIPTION: Check if the input address range overlaps any of the
212 * ASL operation region address ranges. The only supported
213 * Space IDs are Memory and I/O.
214 *
215 * MUTEX: Assumes the namespace is locked.
216 *
217 ******************************************************************************/
218
219 UINT32
AcpiUtCheckAddressRange(ACPI_ADR_SPACE_TYPE SpaceId,ACPI_PHYSICAL_ADDRESS Address,UINT32 Length,BOOLEAN Warn)220 AcpiUtCheckAddressRange (
221 ACPI_ADR_SPACE_TYPE SpaceId,
222 ACPI_PHYSICAL_ADDRESS Address,
223 UINT32 Length,
224 BOOLEAN Warn)
225 {
226 ACPI_ADDRESS_RANGE *RangeInfo;
227 ACPI_PHYSICAL_ADDRESS EndAddress;
228 char *Pathname;
229 UINT32 OverlapCount = 0;
230
231
232 ACPI_FUNCTION_TRACE (UtCheckAddressRange);
233
234
235 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
236 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO))
237 {
238 return_UINT32 (0);
239 }
240
241 RangeInfo = AcpiGbl_AddressRangeList[SpaceId];
242 EndAddress = Address + Length - 1;
243
244 /* Check entire list for all possible conflicts */
245
246 while (RangeInfo)
247 {
248 /*
249 * Check if the requested address/length overlaps this
250 * address range. There are four cases to consider:
251 *
252 * 1) Input address/length is contained completely in the
253 * address range
254 * 2) Input address/length overlaps range at the range start
255 * 3) Input address/length overlaps range at the range end
256 * 4) Input address/length completely encompasses the range
257 */
258 if ((Address <= RangeInfo->EndAddress) &&
259 (EndAddress >= RangeInfo->StartAddress))
260 {
261 /* Found an address range overlap */
262
263 OverlapCount++;
264 if (Warn) /* Optional warning message */
265 {
266 Pathname = AcpiNsGetNormalizedPathname (RangeInfo->RegionNode, TRUE);
267
268 ACPI_WARNING ((AE_INFO,
269 "%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)",
270 AcpiUtGetRegionName (SpaceId),
271 ACPI_FORMAT_UINT64 (Address),
272 ACPI_FORMAT_UINT64 (EndAddress),
273 ACPI_FORMAT_UINT64 (RangeInfo->StartAddress),
274 ACPI_FORMAT_UINT64 (RangeInfo->EndAddress),
275 Pathname));
276 ACPI_FREE (Pathname);
277 }
278 }
279
280 RangeInfo = RangeInfo->Next;
281 }
282
283 return_UINT32 (OverlapCount);
284 }
285
286
287 /*******************************************************************************
288 *
289 * FUNCTION: AcpiUtDeleteAddressLists
290 *
291 * PARAMETERS: None
292 *
293 * RETURN: None
294 *
295 * DESCRIPTION: Delete all global address range lists (called during
296 * subsystem shutdown).
297 *
298 ******************************************************************************/
299
300 void
AcpiUtDeleteAddressLists(void)301 AcpiUtDeleteAddressLists (
302 void)
303 {
304 ACPI_ADDRESS_RANGE *Next;
305 ACPI_ADDRESS_RANGE *RangeInfo;
306 int i;
307
308
309 /* Delete all elements in all address range lists */
310
311 for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++)
312 {
313 Next = AcpiGbl_AddressRangeList[i];
314
315 while (Next)
316 {
317 RangeInfo = Next;
318 Next = RangeInfo->Next;
319 ACPI_FREE (RangeInfo);
320 }
321
322 AcpiGbl_AddressRangeList[i] = NULL;
323 }
324 }
325