1
2/******************************************************************************
3 *
4 * Module Name: exregion - ACPI default OpRegion (address space) handlers
5 * $Revision: 87 $
6 *
7 *****************************************************************************/
8
9/******************************************************************************
10 *
11 * 1. Copyright Notice
12 *
13 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
14 * All rights reserved.
15 *
16 * 2. License
17 *
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
21 * property rights.
22 *
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
29 *
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;
38 *
39 * The above copyright and patent license is granted only if the following
40 * conditions are met:
41 *
42 * 3. Conditions
43 *
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.
55 *
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
66 * make.
67 *
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
72 * distribution.
73 *
74 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * Intel Code.
76 *
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.
81 *
82 * 4. Disclaimer and Export Compliance
83 *
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
90 * PARTICULAR PURPOSE.
91 *
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
99 * LIMITED REMEDY.
100 *
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.
115 *
116 *****************************************************************************/
117
118
119#define __EXREGION_C__
120
121#include <contrib/dev/acpica/acpi.h>
122#include <contrib/dev/acpica/acinterp.h>
123
124
125#define _COMPONENT ACPI_EXECUTER
126 ACPI_MODULE_NAME ("exregion")
127
128
129/*******************************************************************************
130 *
131 * FUNCTION: AcpiExSystemMemorySpaceHandler
132 *
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
139 * accessed region
140 *
141 * RETURN: Status
142 *
143 * DESCRIPTION: Handler for the System Memory address space (Op Region)
144 *
145 ******************************************************************************/
146
147ACPI_STATUS
148AcpiExSystemMemorySpaceHandler (
149 UINT32 Function,
150 ACPI_PHYSICAL_ADDRESS Address,
151 UINT32 BitWidth,
152 ACPI_INTEGER *Value,
153 void *HandlerContext,
154 void *RegionContext)
155{
156 ACPI_STATUS Status = AE_OK;
157 void *LogicalAddrPtr = NULL;
158 ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext;
159 UINT32 Length;
160 ACPI_SIZE WindowSize;
161#ifndef ACPI_MISALIGNED_TRANSFERS
162 UINT32 Remainder;
163#endif
164
165 ACPI_FUNCTION_TRACE ("ExSystemMemorySpaceHandler");
166
167
168 /* Validate and translate the bit width */
169
170 switch (BitWidth)
171 {
172 case 8:
173 Length = 1;
174 break;
175
176 case 16:
177 Length = 2;
178 break;
179
180 case 32:
181 Length = 4;
182 break;
183
184 case 64:
185 Length = 8;
186 break;
187
188 default:
189 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid SystemMemory width %d\n",
190 BitWidth));
191 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
192 }
193
194
195#ifndef ACPI_MISALIGNED_TRANSFERS
196 /*
197 * Hardware does not support non-aligned data transfers, we must verify
198 * the request.
199 */
200 (void) AcpiUtShortDivide ((ACPI_INTEGER) Address, Length, NULL, &Remainder);
201 if (Remainder != 0)
202 {
203 return_ACPI_STATUS (AE_AML_ALIGNMENT);
204 }
205#endif
206
207 /*
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?
211 */
212 if ((Address < MemInfo->MappedPhysicalAddress) ||
213 (((ACPI_INTEGER) Address + Length) >
214 ((ACPI_INTEGER) MemInfo->MappedPhysicalAddress + MemInfo->MappedLength)))
215 {
216 /*
217 * The request cannot be resolved by the current memory mapping;
218 * Delete the existing mapping and create a new one.
219 */
220 if (MemInfo->MappedLength)
221 {
222 /* Valid mapping, delete it */
223
224 AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress,
225 MemInfo->MappedLength);
226 }
227
228 /*
229 * Don't attempt to map memory beyond the end of the region, and
230 * constrain the maximum mapping size to something reasonable.
231 */
232 WindowSize = (ACPI_SIZE) ((MemInfo->Address + MemInfo->Length) - Address);
233 if (WindowSize > ACPI_SYSMEM_REGION_WINDOW_SIZE)
234 {
235 WindowSize = ACPI_SYSMEM_REGION_WINDOW_SIZE;
236 }
237
238 /* Create a new mapping starting at the address given */
239
240 Status = AcpiOsMapMemory (Address, WindowSize,
241 (void **) &MemInfo->MappedLogicalAddress);
242 if (ACPI_FAILURE (Status))
243 {
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);
248 }
249
250 /* Save the physical address and mapping size */
251
252 MemInfo->MappedPhysicalAddress = Address;
253 MemInfo->MappedLength = WindowSize;
254 }
255
256 /*
257 * Generate a logical pointer corresponding to the address we want to
258 * access
259 */
260 LogicalAddrPtr = MemInfo->MappedLogicalAddress +
261 ((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress);
262
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)));
266
267 /*
268 * Perform the memory read or write
269 *
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.
274 */
275 switch (Function)
276 {
277 case ACPI_READ:
278
279 *Value = 0;
280 switch (BitWidth)
281 {
282 case 8:
283 *Value = (ACPI_INTEGER) *((UINT8 *) LogicalAddrPtr);
284 break;
285
286 case 16:
287 *Value = (ACPI_INTEGER) *((UINT16 *) LogicalAddrPtr);
288 break;
289
290 case 32:
291 *Value = (ACPI_INTEGER) *((UINT32 *) LogicalAddrPtr);
292 break;
293
294#if ACPI_MACHINE_WIDTH != 16
295 case 64:
296 *Value = (ACPI_INTEGER) *((UINT64 *) LogicalAddrPtr);
297 break;
298#endif
299 default:
300 /* BitWidth was already validated */
301 break;
302 }
303 break;
304
305 case ACPI_WRITE:
306
307 switch (BitWidth)
308 {
309 case 8:
310 *(UINT8 *) LogicalAddrPtr = (UINT8) *Value;
311 break;
312
313 case 16:
314 *(UINT16 *) LogicalAddrPtr = (UINT16) *Value;
315 break;
316
317 case 32:
318 *(UINT32 *) LogicalAddrPtr = (UINT32) *Value;
319 break;
320
321#if ACPI_MACHINE_WIDTH != 16
322 case 64:
323 *(UINT64 *) LogicalAddrPtr = (UINT64) *Value;
324 break;
325#endif
326
327 default:
328 /* BitWidth was already validated */
329 break;
330 }
331 break;
332
333 default:
334 Status = AE_BAD_PARAMETER;
335 break;
336 }
337
338 return_ACPI_STATUS (Status);
339}
340
341
342/*******************************************************************************
343 *
344 * FUNCTION: AcpiExSystemIoSpaceHandler
345 *
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
352 * accessed region
353 *
354 * RETURN: Status
355 *
356 * DESCRIPTION: Handler for the System IO address space (Op Region)
357 *
358 ******************************************************************************/
359
360ACPI_STATUS
361AcpiExSystemIoSpaceHandler (
362 UINT32 Function,
363 ACPI_PHYSICAL_ADDRESS Address,
364 UINT32 BitWidth,
365 ACPI_INTEGER *Value,
366 void *HandlerContext,
367 void *RegionContext)
368{
369 ACPI_STATUS Status = AE_OK;
370 UINT32 Value32;
371
372
373 ACPI_FUNCTION_TRACE ("ExSystemIoSpaceHandler");
374
375
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)));
379
380 /* Decode the function parameter */
381
382 switch (Function)
383 {
384 case ACPI_READ:
385
386 Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address, &Value32, BitWidth);
387 *Value = Value32;
388 break;
389
390 case ACPI_WRITE:
391
392 Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) Address, (UINT32) *Value, BitWidth);
393 break;
394
395 default:
396 Status = AE_BAD_PARAMETER;
397 break;
398 }
399
400 return_ACPI_STATUS (Status);
401}
402
403
404/*******************************************************************************
405 *
406 * FUNCTION: AcpiExPciConfigSpaceHandler
407 *
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
414 * accessed region
415 *
416 * RETURN: Status
417 *
418 * DESCRIPTION: Handler for the PCI Config address space (Op Region)
419 *
420 ******************************************************************************/
421
422ACPI_STATUS
423AcpiExPciConfigSpaceHandler (
424 UINT32 Function,
425 ACPI_PHYSICAL_ADDRESS Address,
426 UINT32 BitWidth,
427 ACPI_INTEGER *Value,
428 void *HandlerContext,
429 void *RegionContext)
430{
431 ACPI_STATUS Status = AE_OK;
432 ACPI_PCI_ID *PciId;
433 UINT16 PciRegister;
434
435
436 ACPI_FUNCTION_TRACE ("ExPciConfigSpaceHandler");
437
438
439 /*
440 * The arguments to AcpiOs(Read|Write)PciConfiguration are:
441 *
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
447 *
448 * Value - input value for write, output address for read
449 *
450 */
451 PciId = (ACPI_PCI_ID *) RegionContext;
452 PciRegister = (UINT16) (UINT32) Address;
453
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));
458
459 switch (Function)
460 {
461 case ACPI_READ:
462
463 *Value = 0;
464 Status = AcpiOsReadPciConfiguration (PciId, PciRegister, Value, BitWidth);
465 break;
466
467 case ACPI_WRITE:
468
469 Status = AcpiOsWritePciConfiguration (PciId, PciRegister, *Value, BitWidth);
470 break;
471
472 default:
473
474 Status = AE_BAD_PARAMETER;
475 break;
476 }
477
478 return_ACPI_STATUS (Status);
479}
480
481
482/*******************************************************************************
483 *
484 * FUNCTION: AcpiExCmosSpaceHandler
485 *
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
492 * accessed region
493 *
494 * RETURN: Status
495 *
496 * DESCRIPTION: Handler for the CMOS address space (Op Region)
497 *
498 ******************************************************************************/
499
500ACPI_STATUS
501AcpiExCmosSpaceHandler (
502 UINT32 Function,
503 ACPI_PHYSICAL_ADDRESS Address,
504 UINT32 BitWidth,
505 ACPI_INTEGER *Value,
506 void *HandlerContext,
507 void *RegionContext)
508{
509 ACPI_STATUS Status = AE_OK;
510
511
512 ACPI_FUNCTION_TRACE ("ExCmosSpaceHandler");
513
514
515 return_ACPI_STATUS (Status);
516}
517
518
519/*******************************************************************************
520 *
521 * FUNCTION: AcpiExPciBarSpaceHandler
522 *
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
529 * accessed region
530 *
531 * RETURN: Status
532 *
533 * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region)
534 *
535 ******************************************************************************/
536
537ACPI_STATUS
538AcpiExPciBarSpaceHandler (
539 UINT32 Function,
540 ACPI_PHYSICAL_ADDRESS Address,
541 UINT32 BitWidth,
542 ACPI_INTEGER *Value,
543 void *HandlerContext,
544 void *RegionContext)
545{
546 ACPI_STATUS Status = AE_OK;
547
548
549 ACPI_FUNCTION_TRACE ("ExPciBarSpaceHandler");
550
551
552 return_ACPI_STATUS (Status);
553}
554
555
556/*******************************************************************************
557 *
558 * FUNCTION: AcpiExDataTableSpaceHandler
559 *
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
566 * accessed region
567 *
568 * RETURN: Status
569 *
570 * DESCRIPTION: Handler for the Data Table address space (Op Region)
571 *
572 ******************************************************************************/
573
574ACPI_STATUS
575AcpiExDataTableSpaceHandler (
576 UINT32 Function,
577 ACPI_PHYSICAL_ADDRESS Address,
578 UINT32 BitWidth,
579 ACPI_INTEGER *Value,
580 void *HandlerContext,
581 void *RegionContext)
582{
583 ACPI_STATUS Status = AE_OK;
584 UINT32 ByteWidth = ACPI_DIV_8 (BitWidth);
585 UINT32 i;
586 char *LogicalAddrPtr;
587
588
589 ACPI_FUNCTION_TRACE ("ExDataTableSpaceHandler");
590
591
592 LogicalAddrPtr = ACPI_PHYSADDR_TO_PTR (Address);
593
594
595 /* Perform the memory read or write */
596
597 switch (Function)
598 {
599 case ACPI_READ:
600
601 for (i = 0; i < ByteWidth; i++)
602 {
603 ((char *) Value) [i] = LogicalAddrPtr[i];
604 }
605 break;
606
607 case ACPI_WRITE:
608 default:
609
610 return_ACPI_STATUS (AE_SUPPORT);
611 }
612
613 return_ACPI_STATUS (Status);
614}
615
616
2/******************************************************************************
3 *
4 * Module Name: exregion - ACPI default OpRegion (address space) handlers
5 * $Revision: 87 $
6 *
7 *****************************************************************************/
8
9/******************************************************************************
10 *
11 * 1. Copyright Notice
12 *
13 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
14 * All rights reserved.
15 *
16 * 2. License
17 *
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
21 * property rights.
22 *
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
29 *
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;
38 *
39 * The above copyright and patent license is granted only if the following
40 * conditions are met:
41 *
42 * 3. Conditions
43 *
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.
55 *
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
66 * make.
67 *
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
72 * distribution.
73 *
74 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * Intel Code.
76 *
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.
81 *
82 * 4. Disclaimer and Export Compliance
83 *
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
90 * PARTICULAR PURPOSE.
91 *
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
99 * LIMITED REMEDY.
100 *
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.
115 *
116 *****************************************************************************/
117
118
119#define __EXREGION_C__
120
121#include <contrib/dev/acpica/acpi.h>
122#include <contrib/dev/acpica/acinterp.h>
123
124
125#define _COMPONENT ACPI_EXECUTER
126 ACPI_MODULE_NAME ("exregion")
127
128
129/*******************************************************************************
130 *
131 * FUNCTION: AcpiExSystemMemorySpaceHandler
132 *
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
139 * accessed region
140 *
141 * RETURN: Status
142 *
143 * DESCRIPTION: Handler for the System Memory address space (Op Region)
144 *
145 ******************************************************************************/
146
147ACPI_STATUS
148AcpiExSystemMemorySpaceHandler (
149 UINT32 Function,
150 ACPI_PHYSICAL_ADDRESS Address,
151 UINT32 BitWidth,
152 ACPI_INTEGER *Value,
153 void *HandlerContext,
154 void *RegionContext)
155{
156 ACPI_STATUS Status = AE_OK;
157 void *LogicalAddrPtr = NULL;
158 ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext;
159 UINT32 Length;
160 ACPI_SIZE WindowSize;
161#ifndef ACPI_MISALIGNED_TRANSFERS
162 UINT32 Remainder;
163#endif
164
165 ACPI_FUNCTION_TRACE ("ExSystemMemorySpaceHandler");
166
167
168 /* Validate and translate the bit width */
169
170 switch (BitWidth)
171 {
172 case 8:
173 Length = 1;
174 break;
175
176 case 16:
177 Length = 2;
178 break;
179
180 case 32:
181 Length = 4;
182 break;
183
184 case 64:
185 Length = 8;
186 break;
187
188 default:
189 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid SystemMemory width %d\n",
190 BitWidth));
191 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
192 }
193
194
195#ifndef ACPI_MISALIGNED_TRANSFERS
196 /*
197 * Hardware does not support non-aligned data transfers, we must verify
198 * the request.
199 */
200 (void) AcpiUtShortDivide ((ACPI_INTEGER) Address, Length, NULL, &Remainder);
201 if (Remainder != 0)
202 {
203 return_ACPI_STATUS (AE_AML_ALIGNMENT);
204 }
205#endif
206
207 /*
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?
211 */
212 if ((Address < MemInfo->MappedPhysicalAddress) ||
213 (((ACPI_INTEGER) Address + Length) >
214 ((ACPI_INTEGER) MemInfo->MappedPhysicalAddress + MemInfo->MappedLength)))
215 {
216 /*
217 * The request cannot be resolved by the current memory mapping;
218 * Delete the existing mapping and create a new one.
219 */
220 if (MemInfo->MappedLength)
221 {
222 /* Valid mapping, delete it */
223
224 AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress,
225 MemInfo->MappedLength);
226 }
227
228 /*
229 * Don't attempt to map memory beyond the end of the region, and
230 * constrain the maximum mapping size to something reasonable.
231 */
232 WindowSize = (ACPI_SIZE) ((MemInfo->Address + MemInfo->Length) - Address);
233 if (WindowSize > ACPI_SYSMEM_REGION_WINDOW_SIZE)
234 {
235 WindowSize = ACPI_SYSMEM_REGION_WINDOW_SIZE;
236 }
237
238 /* Create a new mapping starting at the address given */
239
240 Status = AcpiOsMapMemory (Address, WindowSize,
241 (void **) &MemInfo->MappedLogicalAddress);
242 if (ACPI_FAILURE (Status))
243 {
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);
248 }
249
250 /* Save the physical address and mapping size */
251
252 MemInfo->MappedPhysicalAddress = Address;
253 MemInfo->MappedLength = WindowSize;
254 }
255
256 /*
257 * Generate a logical pointer corresponding to the address we want to
258 * access
259 */
260 LogicalAddrPtr = MemInfo->MappedLogicalAddress +
261 ((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress);
262
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)));
266
267 /*
268 * Perform the memory read or write
269 *
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.
274 */
275 switch (Function)
276 {
277 case ACPI_READ:
278
279 *Value = 0;
280 switch (BitWidth)
281 {
282 case 8:
283 *Value = (ACPI_INTEGER) *((UINT8 *) LogicalAddrPtr);
284 break;
285
286 case 16:
287 *Value = (ACPI_INTEGER) *((UINT16 *) LogicalAddrPtr);
288 break;
289
290 case 32:
291 *Value = (ACPI_INTEGER) *((UINT32 *) LogicalAddrPtr);
292 break;
293
294#if ACPI_MACHINE_WIDTH != 16
295 case 64:
296 *Value = (ACPI_INTEGER) *((UINT64 *) LogicalAddrPtr);
297 break;
298#endif
299 default:
300 /* BitWidth was already validated */
301 break;
302 }
303 break;
304
305 case ACPI_WRITE:
306
307 switch (BitWidth)
308 {
309 case 8:
310 *(UINT8 *) LogicalAddrPtr = (UINT8) *Value;
311 break;
312
313 case 16:
314 *(UINT16 *) LogicalAddrPtr = (UINT16) *Value;
315 break;
316
317 case 32:
318 *(UINT32 *) LogicalAddrPtr = (UINT32) *Value;
319 break;
320
321#if ACPI_MACHINE_WIDTH != 16
322 case 64:
323 *(UINT64 *) LogicalAddrPtr = (UINT64) *Value;
324 break;
325#endif
326
327 default:
328 /* BitWidth was already validated */
329 break;
330 }
331 break;
332
333 default:
334 Status = AE_BAD_PARAMETER;
335 break;
336 }
337
338 return_ACPI_STATUS (Status);
339}
340
341
342/*******************************************************************************
343 *
344 * FUNCTION: AcpiExSystemIoSpaceHandler
345 *
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
352 * accessed region
353 *
354 * RETURN: Status
355 *
356 * DESCRIPTION: Handler for the System IO address space (Op Region)
357 *
358 ******************************************************************************/
359
360ACPI_STATUS
361AcpiExSystemIoSpaceHandler (
362 UINT32 Function,
363 ACPI_PHYSICAL_ADDRESS Address,
364 UINT32 BitWidth,
365 ACPI_INTEGER *Value,
366 void *HandlerContext,
367 void *RegionContext)
368{
369 ACPI_STATUS Status = AE_OK;
370 UINT32 Value32;
371
372
373 ACPI_FUNCTION_TRACE ("ExSystemIoSpaceHandler");
374
375
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)));
379
380 /* Decode the function parameter */
381
382 switch (Function)
383 {
384 case ACPI_READ:
385
386 Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address, &Value32, BitWidth);
387 *Value = Value32;
388 break;
389
390 case ACPI_WRITE:
391
392 Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) Address, (UINT32) *Value, BitWidth);
393 break;
394
395 default:
396 Status = AE_BAD_PARAMETER;
397 break;
398 }
399
400 return_ACPI_STATUS (Status);
401}
402
403
404/*******************************************************************************
405 *
406 * FUNCTION: AcpiExPciConfigSpaceHandler
407 *
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
414 * accessed region
415 *
416 * RETURN: Status
417 *
418 * DESCRIPTION: Handler for the PCI Config address space (Op Region)
419 *
420 ******************************************************************************/
421
422ACPI_STATUS
423AcpiExPciConfigSpaceHandler (
424 UINT32 Function,
425 ACPI_PHYSICAL_ADDRESS Address,
426 UINT32 BitWidth,
427 ACPI_INTEGER *Value,
428 void *HandlerContext,
429 void *RegionContext)
430{
431 ACPI_STATUS Status = AE_OK;
432 ACPI_PCI_ID *PciId;
433 UINT16 PciRegister;
434
435
436 ACPI_FUNCTION_TRACE ("ExPciConfigSpaceHandler");
437
438
439 /*
440 * The arguments to AcpiOs(Read|Write)PciConfiguration are:
441 *
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
447 *
448 * Value - input value for write, output address for read
449 *
450 */
451 PciId = (ACPI_PCI_ID *) RegionContext;
452 PciRegister = (UINT16) (UINT32) Address;
453
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));
458
459 switch (Function)
460 {
461 case ACPI_READ:
462
463 *Value = 0;
464 Status = AcpiOsReadPciConfiguration (PciId, PciRegister, Value, BitWidth);
465 break;
466
467 case ACPI_WRITE:
468
469 Status = AcpiOsWritePciConfiguration (PciId, PciRegister, *Value, BitWidth);
470 break;
471
472 default:
473
474 Status = AE_BAD_PARAMETER;
475 break;
476 }
477
478 return_ACPI_STATUS (Status);
479}
480
481
482/*******************************************************************************
483 *
484 * FUNCTION: AcpiExCmosSpaceHandler
485 *
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
492 * accessed region
493 *
494 * RETURN: Status
495 *
496 * DESCRIPTION: Handler for the CMOS address space (Op Region)
497 *
498 ******************************************************************************/
499
500ACPI_STATUS
501AcpiExCmosSpaceHandler (
502 UINT32 Function,
503 ACPI_PHYSICAL_ADDRESS Address,
504 UINT32 BitWidth,
505 ACPI_INTEGER *Value,
506 void *HandlerContext,
507 void *RegionContext)
508{
509 ACPI_STATUS Status = AE_OK;
510
511
512 ACPI_FUNCTION_TRACE ("ExCmosSpaceHandler");
513
514
515 return_ACPI_STATUS (Status);
516}
517
518
519/*******************************************************************************
520 *
521 * FUNCTION: AcpiExPciBarSpaceHandler
522 *
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
529 * accessed region
530 *
531 * RETURN: Status
532 *
533 * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region)
534 *
535 ******************************************************************************/
536
537ACPI_STATUS
538AcpiExPciBarSpaceHandler (
539 UINT32 Function,
540 ACPI_PHYSICAL_ADDRESS Address,
541 UINT32 BitWidth,
542 ACPI_INTEGER *Value,
543 void *HandlerContext,
544 void *RegionContext)
545{
546 ACPI_STATUS Status = AE_OK;
547
548
549 ACPI_FUNCTION_TRACE ("ExPciBarSpaceHandler");
550
551
552 return_ACPI_STATUS (Status);
553}
554
555
556/*******************************************************************************
557 *
558 * FUNCTION: AcpiExDataTableSpaceHandler
559 *
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
566 * accessed region
567 *
568 * RETURN: Status
569 *
570 * DESCRIPTION: Handler for the Data Table address space (Op Region)
571 *
572 ******************************************************************************/
573
574ACPI_STATUS
575AcpiExDataTableSpaceHandler (
576 UINT32 Function,
577 ACPI_PHYSICAL_ADDRESS Address,
578 UINT32 BitWidth,
579 ACPI_INTEGER *Value,
580 void *HandlerContext,
581 void *RegionContext)
582{
583 ACPI_STATUS Status = AE_OK;
584 UINT32 ByteWidth = ACPI_DIV_8 (BitWidth);
585 UINT32 i;
586 char *LogicalAddrPtr;
587
588
589 ACPI_FUNCTION_TRACE ("ExDataTableSpaceHandler");
590
591
592 LogicalAddrPtr = ACPI_PHYSADDR_TO_PTR (Address);
593
594
595 /* Perform the memory read or write */
596
597 switch (Function)
598 {
599 case ACPI_READ:
600
601 for (i = 0; i < ByteWidth; i++)
602 {
603 ((char *) Value) [i] = LogicalAddrPtr[i];
604 }
605 break;
606
607 case ACPI_WRITE:
608 default:
609
610 return_ACPI_STATUS (AE_SUPPORT);
611 }
612
613 return_ACPI_STATUS (Status);
614}
615
616