rslist.c revision 193341
1/******************************************************************************* 2 * 3 * Module Name: rslist - Linked list utilities 4 * 5 ******************************************************************************/ 6 7/****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2009, 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 __RSLIST_C__ 117 118#include <contrib/dev/acpica/include/acpi.h> 119#include <contrib/dev/acpica/include/accommon.h> 120#include <contrib/dev/acpica/include/acresrc.h> 121 122#define _COMPONENT ACPI_RESOURCES 123 ACPI_MODULE_NAME ("rslist") 124 125 126/******************************************************************************* 127 * 128 * FUNCTION: AcpiRsConvertAmlToResources 129 * 130 * PARAMETERS: ACPI_WALK_AML_CALLBACK 131 * ResourcePtr - Pointer to the buffer that will 132 * contain the output structures 133 * 134 * RETURN: Status 135 * 136 * DESCRIPTION: Convert an AML resource to an internal representation of the 137 * resource that is aligned and easier to access. 138 * 139 ******************************************************************************/ 140 141ACPI_STATUS 142AcpiRsConvertAmlToResources ( 143 UINT8 *Aml, 144 UINT32 Length, 145 UINT32 Offset, 146 UINT8 ResourceIndex, 147 void *Context) 148{ 149 ACPI_RESOURCE **ResourcePtr = ACPI_CAST_INDIRECT_PTR ( 150 ACPI_RESOURCE, Context); 151 ACPI_RESOURCE *Resource; 152 ACPI_STATUS Status; 153 154 155 ACPI_FUNCTION_TRACE (RsConvertAmlToResources); 156 157 158 /* 159 * Check that the input buffer and all subsequent pointers into it 160 * are aligned on a native word boundary. Most important on IA64 161 */ 162 Resource = *ResourcePtr; 163 if (ACPI_IS_MISALIGNED (Resource)) 164 { 165 ACPI_WARNING ((AE_INFO, 166 "Misaligned resource pointer %p", Resource)); 167 } 168 169 /* Convert the AML byte stream resource to a local resource struct */ 170 171 Status = AcpiRsConvertAmlToResource ( 172 Resource, ACPI_CAST_PTR (AML_RESOURCE, Aml), 173 AcpiGbl_GetResourceDispatch[ResourceIndex]); 174 if (ACPI_FAILURE (Status)) 175 { 176 ACPI_EXCEPTION ((AE_INFO, Status, 177 "Could not convert AML resource (Type %X)", *Aml)); 178 return_ACPI_STATUS (Status); 179 } 180 181 ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES, 182 "Type %.2X, AmlLength %.2X InternalLength %.2X\n", 183 AcpiUtGetResourceType (Aml), Length, 184 Resource->Length)); 185 186 /* Point to the next structure in the output buffer */ 187 188 *ResourcePtr = ACPI_ADD_PTR (void, Resource, Resource->Length); 189 return_ACPI_STATUS (AE_OK); 190} 191 192 193/******************************************************************************* 194 * 195 * FUNCTION: AcpiRsConvertResourcesToAml 196 * 197 * PARAMETERS: Resource - Pointer to the resource linked list 198 * AmlSizeNeeded - Calculated size of the byte stream 199 * needed from calling AcpiRsGetAmlLength() 200 * The size of the OutputBuffer is 201 * guaranteed to be >= AmlSizeNeeded 202 * OutputBuffer - Pointer to the buffer that will 203 * contain the byte stream 204 * 205 * RETURN: Status 206 * 207 * DESCRIPTION: Takes the resource linked list and parses it, creating a 208 * byte stream of resources in the caller's output buffer 209 * 210 ******************************************************************************/ 211 212ACPI_STATUS 213AcpiRsConvertResourcesToAml ( 214 ACPI_RESOURCE *Resource, 215 ACPI_SIZE AmlSizeNeeded, 216 UINT8 *OutputBuffer) 217{ 218 UINT8 *Aml = OutputBuffer; 219 UINT8 *EndAml = OutputBuffer + AmlSizeNeeded; 220 ACPI_STATUS Status; 221 222 223 ACPI_FUNCTION_TRACE (RsConvertResourcesToAml); 224 225 226 /* Walk the resource descriptor list, convert each descriptor */ 227 228 while (Aml < EndAml) 229 { 230 /* Validate the (internal) Resource Type */ 231 232 if (Resource->Type > ACPI_RESOURCE_TYPE_MAX) 233 { 234 ACPI_ERROR ((AE_INFO, 235 "Invalid descriptor type (%X) in resource list", 236 Resource->Type)); 237 return_ACPI_STATUS (AE_BAD_DATA); 238 } 239 240 /* Perform the conversion */ 241 242 Status = AcpiRsConvertResourceToAml (Resource, 243 ACPI_CAST_PTR (AML_RESOURCE, Aml), 244 AcpiGbl_SetResourceDispatch[Resource->Type]); 245 if (ACPI_FAILURE (Status)) 246 { 247 ACPI_EXCEPTION ((AE_INFO, Status, 248 "Could not convert resource (type %X) to AML", 249 Resource->Type)); 250 return_ACPI_STATUS (Status); 251 } 252 253 /* Perform final sanity check on the new AML resource descriptor */ 254 255 Status = AcpiUtValidateResource ( 256 ACPI_CAST_PTR (AML_RESOURCE, Aml), NULL); 257 if (ACPI_FAILURE (Status)) 258 { 259 return_ACPI_STATUS (Status); 260 } 261 262 /* Check for end-of-list, normal exit */ 263 264 if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG) 265 { 266 /* An End Tag indicates the end of the input Resource Template */ 267 268 return_ACPI_STATUS (AE_OK); 269 } 270 271 /* 272 * Extract the total length of the new descriptor and set the 273 * Aml to point to the next (output) resource descriptor 274 */ 275 Aml += AcpiUtGetDescriptorLength (Aml); 276 277 /* Point to the next input resource descriptor */ 278 279 Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length); 280 } 281 282 /* Completed buffer, but did not find an EndTag resource descriptor */ 283 284 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG); 285} 286 287