1 /*******************************************************************************
3 * Module Name: rslist - Linked list utilities
5 ******************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2015, Intel Corp.
12 * All rights reserved.
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
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
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;
37 * The above copyright and patent license is granted only if the following
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.
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
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
72 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
80 * 4. Disclaimer and Export Compliance
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
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
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.
114 *****************************************************************************/
117 #include "accommon.h"
120 #define _COMPONENT ACPI_RESOURCES
121 ACPI_MODULE_NAME ("rslist")
124 /*******************************************************************************
126 * FUNCTION: AcpiRsConvertAmlToResources
128 * PARAMETERS: ACPI_WALK_AML_CALLBACK
129 * ResourcePtr - Pointer to the buffer that will
130 * contain the output structures
134 * DESCRIPTION: Convert an AML resource to an internal representation of the
135 * resource that is aligned and easier to access.
137 ******************************************************************************/
140 AcpiRsConvertAmlToResources (
147 ACPI_RESOURCE
**ResourcePtr
= ACPI_CAST_INDIRECT_PTR (
148 ACPI_RESOURCE
, Context
);
149 ACPI_RESOURCE
*Resource
;
150 AML_RESOURCE
*AmlResource
;
151 ACPI_RSCONVERT_INFO
*ConversionTable
;
155 ACPI_FUNCTION_TRACE (RsConvertAmlToResources
);
159 * Check that the input buffer and all subsequent pointers into it
160 * are aligned on a native word boundary. Most important on IA64
162 Resource
= *ResourcePtr
;
163 if (ACPI_IS_MISALIGNED (Resource
))
165 ACPI_WARNING ((AE_INFO
,
166 "Misaligned resource pointer %p", Resource
));
169 /* Get the appropriate conversion info table */
171 AmlResource
= ACPI_CAST_PTR (AML_RESOURCE
, Aml
);
173 if (AcpiUtGetResourceType (Aml
) ==
174 ACPI_RESOURCE_NAME_SERIAL_BUS
)
176 if (AmlResource
->CommonSerialBus
.Type
>
177 AML_RESOURCE_MAX_SERIALBUSTYPE
)
179 ConversionTable
= NULL
;
183 /* This is an I2C, SPI, or UART SerialBus descriptor */
185 ConversionTable
= AcpiGbl_ConvertResourceSerialBusDispatch
[
186 AmlResource
->CommonSerialBus
.Type
];
191 ConversionTable
= AcpiGbl_GetResourceDispatch
[ResourceIndex
];
194 if (!ConversionTable
)
196 ACPI_ERROR ((AE_INFO
,
197 "Invalid/unsupported resource descriptor: Type 0x%2.2X",
199 return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE
);
202 /* Convert the AML byte stream resource to a local resource struct */
204 Status
= AcpiRsConvertAmlToResource (
205 Resource
, AmlResource
, ConversionTable
);
206 if (ACPI_FAILURE (Status
))
208 ACPI_EXCEPTION ((AE_INFO
, Status
,
209 "Could not convert AML resource (Type 0x%X)", *Aml
));
210 return_ACPI_STATUS (Status
);
213 ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES
,
214 "Type %.2X, AmlLength %.2X InternalLength %.2X\n",
215 AcpiUtGetResourceType (Aml
), Length
,
218 /* Point to the next structure in the output buffer */
220 *ResourcePtr
= ACPI_NEXT_RESOURCE (Resource
);
221 return_ACPI_STATUS (AE_OK
);
225 /*******************************************************************************
227 * FUNCTION: AcpiRsConvertResourcesToAml
229 * PARAMETERS: Resource - Pointer to the resource linked list
230 * AmlSizeNeeded - Calculated size of the byte stream
231 * needed from calling AcpiRsGetAmlLength()
232 * The size of the OutputBuffer is
233 * guaranteed to be >= AmlSizeNeeded
234 * OutputBuffer - Pointer to the buffer that will
235 * contain the byte stream
239 * DESCRIPTION: Takes the resource linked list and parses it, creating a
240 * byte stream of resources in the caller's output buffer
242 ******************************************************************************/
245 AcpiRsConvertResourcesToAml (
246 ACPI_RESOURCE
*Resource
,
247 ACPI_SIZE AmlSizeNeeded
,
250 UINT8
*Aml
= OutputBuffer
;
251 UINT8
*EndAml
= OutputBuffer
+ AmlSizeNeeded
;
252 ACPI_RSCONVERT_INFO
*ConversionTable
;
256 ACPI_FUNCTION_TRACE (RsConvertResourcesToAml
);
259 /* Walk the resource descriptor list, convert each descriptor */
263 /* Validate the (internal) Resource Type */
265 if (Resource
->Type
> ACPI_RESOURCE_TYPE_MAX
)
267 ACPI_ERROR ((AE_INFO
,
268 "Invalid descriptor type (0x%X) in resource list",
270 return_ACPI_STATUS (AE_BAD_DATA
);
273 /* Sanity check the length. It must not be zero, or we loop forever */
275 if (!Resource
->Length
)
277 ACPI_ERROR ((AE_INFO
,
278 "Invalid zero length descriptor in resource list\n"));
279 return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH
);
282 /* Perform the conversion */
284 if (Resource
->Type
== ACPI_RESOURCE_TYPE_SERIAL_BUS
)
286 if (Resource
->Data
.CommonSerialBus
.Type
>
287 AML_RESOURCE_MAX_SERIALBUSTYPE
)
289 ConversionTable
= NULL
;
293 /* This is an I2C, SPI, or UART SerialBus descriptor */
295 ConversionTable
= AcpiGbl_ConvertResourceSerialBusDispatch
[
296 Resource
->Data
.CommonSerialBus
.Type
];
301 ConversionTable
= AcpiGbl_SetResourceDispatch
[Resource
->Type
];
304 if (!ConversionTable
)
306 ACPI_ERROR ((AE_INFO
,
307 "Invalid/unsupported resource descriptor: Type 0x%2.2X",
309 return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE
);
312 Status
= AcpiRsConvertResourceToAml (Resource
,
313 ACPI_CAST_PTR (AML_RESOURCE
, Aml
), ConversionTable
);
314 if (ACPI_FAILURE (Status
))
316 ACPI_EXCEPTION ((AE_INFO
, Status
,
317 "Could not convert resource (type 0x%X) to AML",
319 return_ACPI_STATUS (Status
);
322 /* Perform final sanity check on the new AML resource descriptor */
324 Status
= AcpiUtValidateResource (
325 NULL
, ACPI_CAST_PTR (AML_RESOURCE
, Aml
), NULL
);
326 if (ACPI_FAILURE (Status
))
328 return_ACPI_STATUS (Status
);
331 /* Check for end-of-list, normal exit */
333 if (Resource
->Type
== ACPI_RESOURCE_TYPE_END_TAG
)
335 /* An End Tag indicates the end of the input Resource Template */
337 return_ACPI_STATUS (AE_OK
);
341 * Extract the total length of the new descriptor and set the
342 * Aml to point to the next (output) resource descriptor
344 Aml
+= AcpiUtGetDescriptorLength (Aml
);
346 /* Point to the next input resource descriptor */
348 Resource
= ACPI_NEXT_RESOURCE (Resource
);
351 /* Completed buffer, but did not find an EndTag resource descriptor */
353 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG
);