2 /******************************************************************************
4 * Module Name: exregion - ACPI default OpRegion (address space) handlers
7 *****************************************************************************/
9 /******************************************************************************
13 * Some or all of this work - Copyright (c) 1999 - 2007, 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__
121 #include <contrib/dev/acpica/acpi.h>
122 #include <contrib/dev/acpica/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 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
166 ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler);
169 /* Validate and translate the bit width */
190 ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %d",
192 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
195 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
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) >
215 MemInfo->MappedPhysicalAddress + MemInfo->MappedLength)))
218 * The request cannot be resolved by the current memory mapping;
219 * Delete the existing mapping and create a new one.
221 if (MemInfo->MappedLength)
223 /* Valid mapping, delete it */
225 AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress,
226 MemInfo->MappedLength);
230 * Don't attempt to map memory beyond the end of the region, and
231 * constrain the maximum mapping size to something reasonable.
233 WindowSize = (ACPI_SIZE)
234 ((MemInfo->Address + MemInfo->Length) - Address);
236 if (WindowSize > ACPI_SYSMEM_REGION_WINDOW_SIZE)
238 WindowSize = ACPI_SYSMEM_REGION_WINDOW_SIZE;
241 /* Create a new mapping starting at the address given */
243 MemInfo->MappedLogicalAddress = AcpiOsMapMemory ((ACPI_NATIVE_UINT) Address, WindowSize);
244 if (!MemInfo->MappedLogicalAddress)
246 ACPI_ERROR ((AE_INFO,
247 "Could not map memory at %8.8X%8.8X, size %X",
248 ACPI_FORMAT_UINT64 (Address), (UINT32) WindowSize));
249 MemInfo->MappedLength = 0;
250 return_ACPI_STATUS (AE_NO_MEMORY);
253 /* Save the physical address and mapping size */
255 MemInfo->MappedPhysicalAddress = Address;
256 MemInfo->MappedLength = WindowSize;
260 * Generate a logical pointer corresponding to the address we want to
263 LogicalAddrPtr = MemInfo->MappedLogicalAddress +
264 ((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress);
266 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
267 "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n",
268 BitWidth, Function, ACPI_FORMAT_UINT64 (Address)));
271 * Perform the memory read or write
273 * Note: For machines that do not support non-aligned transfers, the target
274 * address was checked for alignment above. We do not attempt to break the
275 * transfer up into smaller (byte-size) chunks because the AML specifically
276 * asked for a transfer width that the hardware may require.
286 *Value = (ACPI_INTEGER) ACPI_GET8 (LogicalAddrPtr);
290 *Value = (ACPI_INTEGER) ACPI_GET16 (LogicalAddrPtr);
294 *Value = (ACPI_INTEGER) ACPI_GET32 (LogicalAddrPtr);
298 *Value = (ACPI_INTEGER) ACPI_GET64 (LogicalAddrPtr);
302 /* BitWidth was already validated */
312 ACPI_SET8 (LogicalAddrPtr) = (UINT8) *Value;
316 ACPI_SET16 (LogicalAddrPtr) = (UINT16) *Value;
320 ACPI_SET32 ( LogicalAddrPtr) = (UINT32) *Value;
324 ACPI_SET64 (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 "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n",
378 BitWidth, Function, ACPI_FORMAT_UINT64 (Address)));
380 /* Decode the function parameter */
386 Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address,
393 Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) Address,
394 (UINT32) *Value, BitWidth);
398 Status = AE_BAD_PARAMETER;
402 return_ACPI_STATUS (Status);
406 /*******************************************************************************
408 * FUNCTION: AcpiExPciConfigSpaceHandler
410 * PARAMETERS: Function - Read or Write operation
411 * Address - Where in the space to read or write
412 * BitWidth - Field width in bits (8, 16, or 32)
413 * Value - Pointer to in or out value
414 * HandlerContext - Pointer to Handler's context
415 * RegionContext - Pointer to context specific to the
420 * DESCRIPTION: Handler for the PCI Config address space (Op Region)
422 ******************************************************************************/
425 AcpiExPciConfigSpaceHandler (
427 ACPI_PHYSICAL_ADDRESS Address,
430 void *HandlerContext,
433 ACPI_STATUS Status = AE_OK;
438 ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler);
442 * The arguments to AcpiOs(Read|Write)PciConfiguration are:
444 * PciSegment is the PCI bus segment range 0-31
445 * PciBus is the PCI bus number range 0-255
446 * PciDevice is the PCI device number range 0-31
447 * PciFunction is the PCI device function number
448 * PciRegister is the Config space register range 0-255 bytes
450 * Value - input value for write, output address for read
453 PciId = (ACPI_PCI_ID *) RegionContext;
454 PciRegister = (UINT16) (UINT32) Address;
456 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
457 "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
458 Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device,
459 PciId->Function, PciRegister));
466 Status = AcpiOsReadPciConfiguration (PciId, PciRegister,
472 Status = AcpiOsWritePciConfiguration (PciId, PciRegister,
478 Status = AE_BAD_PARAMETER;
482 return_ACPI_STATUS (Status);
486 /*******************************************************************************
488 * FUNCTION: AcpiExCmosSpaceHandler
490 * PARAMETERS: Function - Read or Write operation
491 * Address - Where in the space to read or write
492 * BitWidth - Field width in bits (8, 16, or 32)
493 * Value - Pointer to in or out value
494 * HandlerContext - Pointer to Handler's context
495 * RegionContext - Pointer to context specific to the
500 * DESCRIPTION: Handler for the CMOS address space (Op Region)
502 ******************************************************************************/
505 AcpiExCmosSpaceHandler (
507 ACPI_PHYSICAL_ADDRESS Address,
510 void *HandlerContext,
513 ACPI_STATUS Status = AE_OK;
516 ACPI_FUNCTION_TRACE (ExCmosSpaceHandler);
519 return_ACPI_STATUS (Status);
523 /*******************************************************************************
525 * FUNCTION: AcpiExPciBarSpaceHandler
527 * PARAMETERS: Function - Read or Write operation
528 * Address - Where in the space to read or write
529 * BitWidth - Field width in bits (8, 16, or 32)
530 * Value - Pointer to in or out value
531 * HandlerContext - Pointer to Handler's context
532 * RegionContext - Pointer to context specific to the
537 * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region)
539 ******************************************************************************/
542 AcpiExPciBarSpaceHandler (
544 ACPI_PHYSICAL_ADDRESS Address,
547 void *HandlerContext,
550 ACPI_STATUS Status = AE_OK;
553 ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler);
556 return_ACPI_STATUS (Status);
560 /*******************************************************************************
562 * FUNCTION: AcpiExDataTableSpaceHandler
564 * PARAMETERS: Function - Read or Write operation
565 * Address - Where in the space to read or write
566 * BitWidth - Field width in bits (8, 16, or 32)
567 * Value - Pointer to in or out value
568 * HandlerContext - Pointer to Handler's context
569 * RegionContext - Pointer to context specific to the
574 * DESCRIPTION: Handler for the Data Table address space (Op Region)
576 ******************************************************************************/
579 AcpiExDataTableSpaceHandler (
581 ACPI_PHYSICAL_ADDRESS Address,
584 void *HandlerContext,
587 ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler);
590 /* Perform the memory read or write */
596 ACPI_MEMCPY (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address),
597 ACPI_DIV_8 (BitWidth));
603 return_ACPI_STATUS (AE_SUPPORT);
606 return_ACPI_STATUS (AE_OK);