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 - 2016, 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 #include "acpi.h" 117 #include "accommon.h" 118 #include "acnamesp.h" 119 120 121 #define _COMPONENT ACPI_UTILITIES 122 ACPI_MODULE_NAME ("utaddress") 123 124 125 /******************************************************************************* 126 * 127 * FUNCTION: AcpiUtAddAddressRange 128 * 129 * PARAMETERS: SpaceId - Address space ID 130 * Address - OpRegion start address 131 * Length - OpRegion length 132 * RegionNode - OpRegion namespace node 133 * 134 * RETURN: Status 135 * 136 * DESCRIPTION: Add the Operation Region address range to the global list. 137 * The only supported Space IDs are Memory and I/O. Called when 138 * the OpRegion address/length operands are fully evaluated. 139 * 140 * MUTEX: Locks the namespace 141 * 142 * NOTE: Because this interface is only called when an OpRegion argument 143 * list is evaluated, there cannot be any duplicate RegionNodes. 144 * Duplicate Address/Length values are allowed, however, so that multiple 145 * address conflicts can be detected. 146 * 147 ******************************************************************************/ 148 149 ACPI_STATUS 150 AcpiUtAddAddressRange ( 151 ACPI_ADR_SPACE_TYPE SpaceId, 152 ACPI_PHYSICAL_ADDRESS Address, 153 UINT32 Length, 154 ACPI_NAMESPACE_NODE *RegionNode) 155 { 156 ACPI_ADDRESS_RANGE *RangeInfo; 157 ACPI_STATUS Status; 158 159 160 ACPI_FUNCTION_TRACE (UtAddAddressRange); 161 162 163 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && 164 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) 165 { 166 return_ACPI_STATUS (AE_OK); 167 } 168 169 /* Allocate/init a new info block, add it to the appropriate list */ 170 171 RangeInfo = ACPI_ALLOCATE (sizeof (ACPI_ADDRESS_RANGE)); 172 if (!RangeInfo) 173 { 174 return_ACPI_STATUS (AE_NO_MEMORY); 175 } 176 177 RangeInfo->StartAddress = Address; 178 RangeInfo->EndAddress = (Address + Length - 1); 179 RangeInfo->RegionNode = RegionNode; 180 181 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); 182 if (ACPI_FAILURE (Status)) 183 { 184 ACPI_FREE (RangeInfo); 185 return_ACPI_STATUS (Status); 186 } 187 188 RangeInfo->Next = AcpiGbl_AddressRangeList[SpaceId]; 189 AcpiGbl_AddressRangeList[SpaceId] = RangeInfo; 190 191 ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, 192 "\nAdded [%4.4s] address range: 0x%8.8X%8.8X-0x%8.8X%8.8X\n", 193 AcpiUtGetNodeName (RangeInfo->RegionNode), 194 ACPI_FORMAT_UINT64 (Address), 195 ACPI_FORMAT_UINT64 (RangeInfo->EndAddress))); 196 197 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); 198 return_ACPI_STATUS (AE_OK); 199 } 200 201 202 /******************************************************************************* 203 * 204 * FUNCTION: AcpiUtRemoveAddressRange 205 * 206 * PARAMETERS: SpaceId - Address space ID 207 * RegionNode - OpRegion namespace node 208 * 209 * RETURN: None 210 * 211 * DESCRIPTION: Remove the Operation Region from the global list. The only 212 * supported Space IDs are Memory and I/O. Called when an 213 * OpRegion is deleted. 214 * 215 * MUTEX: Assumes the namespace is locked 216 * 217 ******************************************************************************/ 218 219 void 220 AcpiUtRemoveAddressRange ( 221 ACPI_ADR_SPACE_TYPE SpaceId, 222 ACPI_NAMESPACE_NODE *RegionNode) 223 { 224 ACPI_ADDRESS_RANGE *RangeInfo; 225 ACPI_ADDRESS_RANGE *Prev; 226 227 228 ACPI_FUNCTION_TRACE (UtRemoveAddressRange); 229 230 231 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && 232 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) 233 { 234 return_VOID; 235 } 236 237 /* Get the appropriate list head and check the list */ 238 239 RangeInfo = Prev = AcpiGbl_AddressRangeList[SpaceId]; 240 while (RangeInfo) 241 { 242 if (RangeInfo->RegionNode == RegionNode) 243 { 244 if (RangeInfo == Prev) /* Found at list head */ 245 { 246 AcpiGbl_AddressRangeList[SpaceId] = RangeInfo->Next; 247 } 248 else 249 { 250 Prev->Next = RangeInfo->Next; 251 } 252 253 ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, 254 "\nRemoved [%4.4s] address range: 0x%8.8X%8.8X-0x%8.8X%8.8X\n", 255 AcpiUtGetNodeName (RangeInfo->RegionNode), 256 ACPI_FORMAT_UINT64 (RangeInfo->StartAddress), 257 ACPI_FORMAT_UINT64 (RangeInfo->EndAddress))); 258 259 ACPI_FREE (RangeInfo); 260 return_VOID; 261 } 262 263 Prev = RangeInfo; 264 RangeInfo = RangeInfo->Next; 265 } 266 267 return_VOID; 268 } 269 270 271 /******************************************************************************* 272 * 273 * FUNCTION: AcpiUtCheckAddressRange 274 * 275 * PARAMETERS: SpaceId - Address space ID 276 * Address - Start address 277 * Length - Length of address range 278 * Warn - TRUE if warning on overlap desired 279 * 280 * RETURN: Count of the number of conflicts detected. Zero is always 281 * returned for Space IDs other than Memory or I/O. 282 * 283 * DESCRIPTION: Check if the input address range overlaps any of the 284 * ASL operation region address ranges. The only supported 285 * Space IDs are Memory and I/O. 286 * 287 * MUTEX: Assumes the namespace is locked. 288 * 289 ******************************************************************************/ 290 291 UINT32 292 AcpiUtCheckAddressRange ( 293 ACPI_ADR_SPACE_TYPE SpaceId, 294 ACPI_PHYSICAL_ADDRESS Address, 295 UINT32 Length, 296 BOOLEAN Warn) 297 { 298 ACPI_ADDRESS_RANGE *RangeInfo; 299 ACPI_PHYSICAL_ADDRESS EndAddress; 300 char *Pathname; 301 UINT32 OverlapCount = 0; 302 303 304 ACPI_FUNCTION_TRACE (UtCheckAddressRange); 305 306 307 if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && 308 (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) 309 { 310 return_UINT32 (0); 311 } 312 313 RangeInfo = AcpiGbl_AddressRangeList[SpaceId]; 314 EndAddress = Address + Length - 1; 315 316 /* Check entire list for all possible conflicts */ 317 318 while (RangeInfo) 319 { 320 /* 321 * Check if the requested address/length overlaps this 322 * address range. There are four cases to consider: 323 * 324 * 1) Input address/length is contained completely in the 325 * address range 326 * 2) Input address/length overlaps range at the range start 327 * 3) Input address/length overlaps range at the range end 328 * 4) Input address/length completely encompasses the range 329 */ 330 if ((Address <= RangeInfo->EndAddress) && 331 (EndAddress >= RangeInfo->StartAddress)) 332 { 333 /* Found an address range overlap */ 334 335 OverlapCount++; 336 if (Warn) /* Optional warning message */ 337 { 338 Pathname = AcpiNsGetNormalizedPathname (RangeInfo->RegionNode, TRUE); 339 340 ACPI_WARNING ((AE_INFO, 341 "%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)", 342 AcpiUtGetRegionName (SpaceId), 343 ACPI_FORMAT_UINT64 (Address), 344 ACPI_FORMAT_UINT64 (EndAddress), 345 ACPI_FORMAT_UINT64 (RangeInfo->StartAddress), 346 ACPI_FORMAT_UINT64 (RangeInfo->EndAddress), 347 Pathname)); 348 ACPI_FREE (Pathname); 349 } 350 } 351 352 RangeInfo = RangeInfo->Next; 353 } 354 355 return_UINT32 (OverlapCount); 356 } 357 358 359 /******************************************************************************* 360 * 361 * FUNCTION: AcpiUtDeleteAddressLists 362 * 363 * PARAMETERS: None 364 * 365 * RETURN: None 366 * 367 * DESCRIPTION: Delete all global address range lists (called during 368 * subsystem shutdown). 369 * 370 ******************************************************************************/ 371 372 void 373 AcpiUtDeleteAddressLists ( 374 void) 375 { 376 ACPI_ADDRESS_RANGE *Next; 377 ACPI_ADDRESS_RANGE *RangeInfo; 378 int i; 379 380 381 /* Delete all elements in all address range lists */ 382 383 for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) 384 { 385 Next = AcpiGbl_AddressRangeList[i]; 386 387 while (Next) 388 { 389 RangeInfo = Next; 390 Next = RangeInfo->Next; 391 ACPI_FREE (RangeInfo); 392 } 393 394 AcpiGbl_AddressRangeList[i] = NULL; 395 } 396 } 397