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 - 2013, 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 #define __UTADDRESS_C__ 117 118 #include "acpi.h" 119 #include "accommon.h" 120 #include "acnamesp.h" 121 122 123 #define _COMPONENT ACPI_UTILITIES 124 ACPI_MODULE_NAME ("utaddress") 125 126 127 /******************************************************************************* 128 * 129 * FUNCTION: AcpiUtAddAddressRange 130 * 131 * PARAMETERS: SpaceId - Address space ID 132 * Address - OpRegion start address 133 * Length - OpRegion length 134 * RegionNode - OpRegion namespace node 135 * 136 * RETURN: Status 137 * 138 * DESCRIPTION: Add the Operation Region address range to the global list. 139 * The only supported Space IDs are Memory and I/O. Called when 140 * the OpRegion address/length operands are fully evaluated. 141 * 142 * MUTEX: Locks the namespace 143 * 144 * NOTE: Because this interface is only called when an OpRegion argument 145 * list is evaluated, there cannot be any duplicate RegionNodes. 146 * Duplicate Address/Length values are allowed, however, so that multiple 147 * address conflicts can be detected. 148 * 149 ******************************************************************************/ 150 151 ACPI_STATUS 152 AcpiUtAddAddressRange ( 153 ACPI_ADR_SPACE_TYPE SpaceId, 154 ACPI_PHYSICAL_ADDRESS Address, 155 UINT32 Length, 156 ACPI_NAMESPACE_NODE *RegionNode) 157 { 158 ACPI_ADDRESS_RANGE *RangeInfo; 159 ACPI_STATUS Status; 160 161 162 ACPI_FUNCTION_TRACE (UtAddAddressRange); 163 164 165 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && 166 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) 167 { 168 return_ACPI_STATUS (AE_OK); 169 } 170 171 /* Allocate/init a new info block, add it to the appropriate list */ 172 173 RangeInfo = ACPI_ALLOCATE (sizeof (ACPI_ADDRESS_RANGE)); 174 if (!RangeInfo) 175 { 176 return_ACPI_STATUS (AE_NO_MEMORY); 177 } 178 179 RangeInfo->StartAddress = Address; 180 RangeInfo->EndAddress = (Address + Length - 1); 181 RangeInfo->RegionNode = RegionNode; 182 183 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 184 if (ACPI_FAILURE (Status)) 185 { 186 ACPI_FREE (RangeInfo); 187 return_ACPI_STATUS (Status); 188 } 189 190 RangeInfo->Next = AcpiGbl_AddressRangeList[SpaceId]; 191 AcpiGbl_AddressRangeList[SpaceId] = RangeInfo; 192 193 ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, 194 "\nAdded [%4.4s] address range: 0x%p-0x%p\n", 195 AcpiUtGetNodeName (RangeInfo->RegionNode), 196 ACPI_CAST_PTR (void, Address), 197 ACPI_CAST_PTR (void, RangeInfo->EndAddress))); 198 199 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 200 return_ACPI_STATUS (AE_OK); 201 } 202 203 204 /******************************************************************************* 205 * 206 * FUNCTION: AcpiUtRemoveAddressRange 207 * 208 * PARAMETERS: SpaceId - Address space ID 209 * RegionNode - OpRegion namespace node 210 * 211 * RETURN: None 212 * 213 * DESCRIPTION: Remove the Operation Region from the global list. The only 214 * supported Space IDs are Memory and I/O. Called when an 215 * OpRegion is deleted. 216 * 217 * MUTEX: Assumes the namespace is locked 218 * 219 ******************************************************************************/ 220 221 void 222 AcpiUtRemoveAddressRange ( 223 ACPI_ADR_SPACE_TYPE SpaceId, 224 ACPI_NAMESPACE_NODE *RegionNode) 225 { 226 ACPI_ADDRESS_RANGE *RangeInfo; 227 ACPI_ADDRESS_RANGE *Prev; 228 229 230 ACPI_FUNCTION_TRACE (UtRemoveAddressRange); 231 232 233 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && 234 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) 235 { 236 return_VOID; 237 } 238 239 /* Get the appropriate list head and check the list */ 240 241 RangeInfo = Prev = AcpiGbl_AddressRangeList[SpaceId]; 242 while (RangeInfo) 243 { 244 if (RangeInfo->RegionNode == RegionNode) 245 { 246 if (RangeInfo == Prev) /* Found at list head */ 247 { 248 AcpiGbl_AddressRangeList[SpaceId] = RangeInfo->Next; 249 } 250 else 251 { 252 Prev->Next = RangeInfo->Next; 253 } 254 255 ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, 256 "\nRemoved [%4.4s] address range: 0x%p-0x%p\n", 257 AcpiUtGetNodeName (RangeInfo->RegionNode), 258 ACPI_CAST_PTR (void, RangeInfo->StartAddress), 259 ACPI_CAST_PTR (void, RangeInfo->EndAddress))); 260 261 ACPI_FREE (RangeInfo); 262 return_VOID; 263 } 264 265 Prev = RangeInfo; 266 RangeInfo = RangeInfo->Next; 267 } 268 269 return_VOID; 270 } 271 272 273 /******************************************************************************* 274 * 275 * FUNCTION: AcpiUtCheckAddressRange 276 * 277 * PARAMETERS: SpaceId - Address space ID 278 * Address - Start address 279 * Length - Length of address range 280 * Warn - TRUE if warning on overlap desired 281 * 282 * RETURN: Count of the number of conflicts detected. Zero is always 283 * returned for Space IDs other than Memory or I/O. 284 * 285 * DESCRIPTION: Check if the input address range overlaps any of the 286 * ASL operation region address ranges. The only supported 287 * Space IDs are Memory and I/O. 288 * 289 * MUTEX: Assumes the namespace is locked. 290 * 291 ******************************************************************************/ 292 293 UINT32 294 AcpiUtCheckAddressRange ( 295 ACPI_ADR_SPACE_TYPE SpaceId, 296 ACPI_PHYSICAL_ADDRESS Address, 297 UINT32 Length, 298 BOOLEAN Warn) 299 { 300 ACPI_ADDRESS_RANGE *RangeInfo; 301 ACPI_PHYSICAL_ADDRESS EndAddress; 302 char *Pathname; 303 UINT32 OverlapCount = 0; 304 305 306 ACPI_FUNCTION_TRACE (UtCheckAddressRange); 307 308 309 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && 310 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) 311 { 312 return_UINT32 (0); 313 } 314 315 RangeInfo = AcpiGbl_AddressRangeList[SpaceId]; 316 EndAddress = Address + Length - 1; 317 318 /* Check entire list for all possible conflicts */ 319 320 while (RangeInfo) 321 { 322 /* 323 * Check if the requested Address/Length overlaps this AddressRange. 324 * Four cases to consider: 325 * 326 * 1) Input address/length is contained completely in the address range 327 * 2) Input address/length overlaps range at the range start 328 * 3) Input address/length overlaps range at the range end 329 * 4) Input address/length completely encompasses the range 330 */ 331 if ((Address <= RangeInfo->EndAddress) && 332 (EndAddress >= RangeInfo->StartAddress)) 333 { 334 /* Found an address range overlap */ 335 336 OverlapCount++; 337 if (Warn) /* Optional warning message */ 338 { 339 Pathname = AcpiNsGetExternalPathname (RangeInfo->RegionNode); 340 341 ACPI_WARNING ((AE_INFO, 342 "0x%p-0x%p %s conflicts with Region %s %d", 343 ACPI_CAST_PTR (void, Address), 344 ACPI_CAST_PTR (void, EndAddress), 345 AcpiUtGetRegionName (SpaceId), Pathname, OverlapCount)); 346 ACPI_FREE (Pathname); 347 } 348 } 349 350 RangeInfo = RangeInfo->Next; 351 } 352 353 return_UINT32 (OverlapCount); 354 } 355 356 357 /******************************************************************************* 358 * 359 * FUNCTION: AcpiUtDeleteAddressLists 360 * 361 * PARAMETERS: None 362 * 363 * RETURN: None 364 * 365 * DESCRIPTION: Delete all global address range lists (called during 366 * subsystem shutdown). 367 * 368 ******************************************************************************/ 369 370 void 371 AcpiUtDeleteAddressLists ( 372 void) 373 { 374 ACPI_ADDRESS_RANGE *Next; 375 ACPI_ADDRESS_RANGE *RangeInfo; 376 int i; 377 378 379 /* Delete all elements in all address range lists */ 380 381 for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) 382 { 383 Next = AcpiGbl_AddressRangeList[i]; 384 385 while (Next) 386 { 387 RangeInfo = Next; 388 Next = RangeInfo->Next; 389 ACPI_FREE (RangeInfo); 390 } 391 392 AcpiGbl_AddressRangeList[i] = NULL; 393 } 394 } 395