2 /******************************************************************************
4 * Module Name: exregion - ACPI default OpRegion (address space) handlers
7 *****************************************************************************/
9 /******************************************************************************
13 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
14 * All rights reserved.
18 * 2.1. This is your license from Intel Corp. under its intellectual property
19 * rights. You may have additional license terms from the party that provided
20 * you this software, covering your right to use that party's intellectual
23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
24 * copy of the source code appearing in this file ("Covered Code") an
25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
26 * base code distributed originally by Intel ("Original Intel Code") to copy,
27 * make derivatives, distribute, use and display any portion of the Covered
28 * Code in any form, with the right to sublicense such rights; and
30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
31 * license (with the right to sublicense), under only those claims of Intel
32 * patents that are infringed by the Original Intel Code, to make, use, sell,
33 * offer to sell, and import the Covered Code and derivative works thereof
34 * solely to the minimum extent necessary to exercise the above copyright
35 * license, and in no event shall the patent license extend to any additions
36 * to or modifications of the Original Intel Code. No other license or right
37 * is granted directly or by implication, estoppel or otherwise;
39 * The above copyright and patent license is granted only if the following
44 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
45 * Redistribution of source code of any substantial portion of the Covered
46 * Code or modification with rights to further distribute source must include
47 * the above Copyright Notice, the above License, this list of Conditions,
48 * and the following Disclaimer and Export Compliance provision. In addition,
49 * Licensee must cause all Covered Code to which Licensee contributes to
50 * contain a file documenting the changes Licensee made to create that Covered
51 * Code and the date of any change. Licensee must include in that file the
52 * documentation of any changes made by any predecessor Licensee. Licensee
53 * must include a prominent statement that the modification is derived,
54 * directly or indirectly, from Original Intel Code.
56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
57 * Redistribution of source code of any substantial portion of the Covered
58 * Code or modification without rights to further distribute source must
59 * include the following Disclaimer and Export Compliance provision in the
60 * documentation and/or other materials provided with distribution. In
61 * addition, Licensee may not authorize further sublicense of source of any
62 * portion of the Covered Code, and must include terms to the effect that the
63 * license from Licensee to its licensee is limited to the intellectual
64 * property embodied in the software Licensee provides to its licensee, and
65 * not to intellectual property embodied in modifications its licensee may
68 * 3.3. Redistribution of Executable. Redistribution in executable form of any
69 * substantial portion of the Covered Code or modification must reproduce the
70 * above Copyright Notice, and the following Disclaimer and Export Compliance
71 * provision in the documentation and/or other materials provided with the
74 * 3.4. Intel retains all right, title, and interest in and to the Original
77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
78 * Intel shall be used in advertising or otherwise to promote the sale, use or
79 * other dealings in products derived from or relating to the Covered Code
80 * without prior written authorization from Intel.
82 * 4. Disclaimer and Export Compliance
84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
116 *****************************************************************************/
119 #define __EXREGION_C__
122 #include "acinterp.h"
125 #define _COMPONENT ACPI_EXECUTER
126 ACPI_MODULE_NAME ("exregion")
129 /*******************************************************************************
131 * FUNCTION: AcpiExSystemMemorySpaceHandler
133 * PARAMETERS: Function - Read or Write operation
134 * Address - Where in the space to read or write
135 * BitWidth - Field width in bits (8, 16, or 32)
136 * Value - Pointer to in or out value
137 * HandlerContext - Pointer to Handler's context
138 * RegionContext - Pointer to context specific to the
143 * DESCRIPTION: Handler for the System Memory address space (Op Region)
145 ******************************************************************************/
148 AcpiExSystemMemorySpaceHandler (
150 ACPI_PHYSICAL_ADDRESS Address,
153 void *HandlerContext,
156 ACPI_STATUS Status = AE_OK;
157 void *LogicalAddrPtr = NULL;
158 ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext;
160 ACPI_SIZE WindowSize;
161 #ifndef ACPI_MISALIGNED_TRANSFERS
165 ACPI_FUNCTION_TRACE ("ExSystemMemorySpaceHandler");
168 /* Validate and translate the bit width */
189 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid SystemMemory width %d\n",
191 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
195 #ifndef ACPI_MISALIGNED_TRANSFERS
197 * Hardware does not support non-aligned data transfers, we must verify
200 (void) AcpiUtShortDivide ((ACPI_INTEGER *) &Address, Length, NULL, &Remainder);
203 return_ACPI_STATUS (AE_AML_ALIGNMENT);
208 * Does the request fit into the cached memory mapping?
209 * Is 1) Address below the current mapping? OR
210 * 2) Address beyond the current mapping?
212 if ((Address < MemInfo->MappedPhysicalAddress) ||
213 (((ACPI_INTEGER) Address + Length) >
214 ((ACPI_INTEGER) MemInfo->MappedPhysicalAddress + MemInfo->MappedLength)))
217 * The request cannot be resolved by the current memory mapping;
218 * Delete the existing mapping and create a new one.
220 if (MemInfo->MappedLength)
222 /* Valid mapping, delete it */
224 AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress,
225 MemInfo->MappedLength);
229 * Don't attempt to map memory beyond the end of the region, and
230 * constrain the maximum mapping size to something reasonable.
232 WindowSize = (ACPI_SIZE) ((MemInfo->Address + MemInfo->Length) - Address);
233 if (WindowSize > ACPI_SYSMEM_REGION_WINDOW_SIZE)
235 WindowSize = ACPI_SYSMEM_REGION_WINDOW_SIZE;
238 /* Create a new mapping starting at the address given */
240 Status = AcpiOsMapMemory (Address, WindowSize,
241 (void **) &MemInfo->MappedLogicalAddress);
242 if (ACPI_FAILURE (Status))
244 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not map memory at %8.8X%8.8X, size %X\n",
245 ACPI_FORMAT_UINT64 (Address), (UINT32) WindowSize));
246 MemInfo->MappedLength = 0;
247 return_ACPI_STATUS (Status);
250 /* Save the physical address and mapping size */
252 MemInfo->MappedPhysicalAddress = Address;
253 MemInfo->MappedLength = WindowSize;
257 * Generate a logical pointer corresponding to the address we want to
260 LogicalAddrPtr = MemInfo->MappedLogicalAddress +
261 ((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress);
263 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
264 "SystemMemory %d (%d width) Address=%8.8X%8.8X\n", Function, BitWidth,
265 ACPI_FORMAT_UINT64 (Address)));
268 * Perform the memory read or write
270 * Note: For machines that do not support non-aligned transfers, the target
271 * address was checked for alignment above. We do not attempt to break the
272 * transfer up into smaller (byte-size) chunks because the AML specifically
273 * asked for a transfer width that the hardware may require.
283 *Value = (ACPI_INTEGER) *((UINT8 *) LogicalAddrPtr);
287 *Value = (ACPI_INTEGER) *((UINT16 *) LogicalAddrPtr);
291 *Value = (ACPI_INTEGER) *((UINT32 *) LogicalAddrPtr);
294 #if ACPI_MACHINE_WIDTH != 16
296 *Value = (ACPI_INTEGER) *((UINT64 *) LogicalAddrPtr);
300 /* BitWidth was already validated */
310 *(UINT8 *) LogicalAddrPtr = (UINT8) *Value;
314 *(UINT16 *) LogicalAddrPtr = (UINT16) *Value;
318 *(UINT32 *) LogicalAddrPtr = (UINT32) *Value;
321 #if ACPI_MACHINE_WIDTH != 16
323 *(UINT64 *) LogicalAddrPtr = (UINT64) *Value;
328 /* BitWidth was already validated */
334 Status = AE_BAD_PARAMETER;
338 return_ACPI_STATUS (Status);
342 /*******************************************************************************
344 * FUNCTION: AcpiExSystemIoSpaceHandler
346 * PARAMETERS: Function - Read or Write operation
347 * Address - Where in the space to read or write
348 * BitWidth - Field width in bits (8, 16, or 32)
349 * Value - Pointer to in or out value
350 * HandlerContext - Pointer to Handler's context
351 * RegionContext - Pointer to context specific to the
356 * DESCRIPTION: Handler for the System IO address space (Op Region)
358 ******************************************************************************/
361 AcpiExSystemIoSpaceHandler (
363 ACPI_PHYSICAL_ADDRESS Address,
366 void *HandlerContext,
369 ACPI_STATUS Status = AE_OK;
373 ACPI_FUNCTION_TRACE ("ExSystemIoSpaceHandler");
376 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
377 "SystemIO %d (%d width) Address=%8.8X%8.8X\n", Function, BitWidth,
378 ACPI_FORMAT_UINT64 (Address)));
380 /* Decode the function parameter */
386 Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address, &Value32, BitWidth);
392 Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) Address, (UINT32) *Value, BitWidth);
396 Status = AE_BAD_PARAMETER;
400 return_ACPI_STATUS (Status);
404 /*******************************************************************************
406 * FUNCTION: AcpiExPciConfigSpaceHandler
408 * PARAMETERS: Function - Read or Write operation
409 * Address - Where in the space to read or write
410 * BitWidth - Field width in bits (8, 16, or 32)
411 * Value - Pointer to in or out value
412 * HandlerContext - Pointer to Handler's context
413 * RegionContext - Pointer to context specific to the
418 * DESCRIPTION: Handler for the PCI Config address space (Op Region)
420 ******************************************************************************/
423 AcpiExPciConfigSpaceHandler (
425 ACPI_PHYSICAL_ADDRESS Address,
428 void *HandlerContext,
431 ACPI_STATUS Status = AE_OK;
436 ACPI_FUNCTION_TRACE ("ExPciConfigSpaceHandler");
440 * The arguments to AcpiOs(Read|Write)PciConfiguration are:
442 * PciSegment is the PCI bus segment range 0-31
443 * PciBus is the PCI bus number range 0-255
444 * PciDevice is the PCI device number range 0-31
445 * PciFunction is the PCI device function number
446 * PciRegister is the Config space register range 0-255 bytes
448 * Value - input value for write, output address for read
451 PciId = (ACPI_PCI_ID *) RegionContext;
452 PciRegister = (UINT16) (UINT32) Address;
454 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
455 "PciConfig %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
456 Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device,
457 PciId->Function, PciRegister));
464 Status = AcpiOsReadPciConfiguration (PciId, PciRegister, Value, BitWidth);
469 Status = AcpiOsWritePciConfiguration (PciId, PciRegister, *Value, BitWidth);
474 Status = AE_BAD_PARAMETER;
478 return_ACPI_STATUS (Status);
482 /*******************************************************************************
484 * FUNCTION: AcpiExCmosSpaceHandler
486 * PARAMETERS: Function - Read or Write operation
487 * Address - Where in the space to read or write
488 * BitWidth - Field width in bits (8, 16, or 32)
489 * Value - Pointer to in or out value
490 * HandlerContext - Pointer to Handler's context
491 * RegionContext - Pointer to context specific to the
496 * DESCRIPTION: Handler for the CMOS address space (Op Region)
498 ******************************************************************************/
501 AcpiExCmosSpaceHandler (
503 ACPI_PHYSICAL_ADDRESS Address,
506 void *HandlerContext,
509 ACPI_STATUS Status = AE_OK;
512 ACPI_FUNCTION_TRACE ("ExCmosSpaceHandler");
515 return_ACPI_STATUS (Status);
519 /*******************************************************************************
521 * FUNCTION: AcpiExPciBarSpaceHandler
523 * PARAMETERS: Function - Read or Write operation
524 * Address - Where in the space to read or write
525 * BitWidth - Field width in bits (8, 16, or 32)
526 * Value - Pointer to in or out value
527 * HandlerContext - Pointer to Handler's context
528 * RegionContext - Pointer to context specific to the
533 * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region)
535 ******************************************************************************/
538 AcpiExPciBarSpaceHandler (
540 ACPI_PHYSICAL_ADDRESS Address,
543 void *HandlerContext,
546 ACPI_STATUS Status = AE_OK;
549 ACPI_FUNCTION_TRACE ("ExPciBarSpaceHandler");
552 return_ACPI_STATUS (Status);
556 /*******************************************************************************
558 * FUNCTION: AcpiExDataTableSpaceHandler
560 * PARAMETERS: Function - Read or Write operation
561 * Address - Where in the space to read or write
562 * BitWidth - Field width in bits (8, 16, or 32)
563 * Value - Pointer to in or out value
564 * HandlerContext - Pointer to Handler's context
565 * RegionContext - Pointer to context specific to the
570 * DESCRIPTION: Handler for the Data Table address space (Op Region)
572 ******************************************************************************/
575 AcpiExDataTableSpaceHandler (
577 ACPI_PHYSICAL_ADDRESS Address,
580 void *HandlerContext,
583 ACPI_STATUS Status = AE_OK;
584 UINT32 ByteWidth = ACPI_DIV_8 (BitWidth);
586 char *LogicalAddrPtr;
589 ACPI_FUNCTION_TRACE ("ExDataTableSpaceHandler");
592 LogicalAddrPtr = ACPI_PHYSADDR_TO_PTR (Address);
595 /* Perform the memory read or write */
601 for (i = 0; i < ByteWidth; i++)
603 ((char *) Value) [i] = LogicalAddrPtr[i];
610 return_ACPI_STATUS (AE_SUPPORT);
613 return_ACPI_STATUS (Status);