1
2 /******************************************************************************
3 *
4 * Module Name: exregion - ACPI default OpRegion (address space) handlers
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2011, Intel Corp.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
83 {
84 ACPI_STATUS Status = AE_OK;
85 void *LogicalAddrPtr = NULL;
86 ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext;
87 UINT32 Length;
88 ACPI_SIZE MapLength;
89 ACPI_SIZE PageBoundaryMapLength;
90 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
91 UINT32 Remainder;
92 #endif
93
94
95 ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler);
96
97
98 /* Validate and translate the bit width */
99
100 switch (BitWidth)
101 {
102 case 8:
103 Length = 1;
104 break;
105
106 case 16:
107 Length = 2;
108 break;
109
110 case 32:
111 Length = 4;
112 break;
113
114 case 64:
115 Length = 8;
116 break;
117
118 default:
119 ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %u",
120 BitWidth));
121 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
122 }
123
124 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
125 /*
126 * Hardware does not support non-aligned data transfers, we must verify
127 * the request.
128 */
129 (void) AcpiUtShortDivide ((UINT64) Address, Length, NULL, &Remainder);
130 if (Remainder != 0)
131 {
132 return_ACPI_STATUS (AE_AML_ALIGNMENT);
133 }
134 #endif
135
136 /*
137 * Does the request fit into the cached memory mapping?
138 * Is 1) Address below the current mapping? OR
215 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
216 "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
217 BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));
218
219 /*
220 * Perform the memory read or write
221 *
222 * Note: For machines that do not support non-aligned transfers, the target
223 * address was checked for alignment above. We do not attempt to break the
224 * transfer up into smaller (byte-size) chunks because the AML specifically
225 * asked for a transfer width that the hardware may require.
226 */
227 switch (Function)
228 {
229 case ACPI_READ:
230
231 *Value = 0;
232 switch (BitWidth)
233 {
234 case 8:
235 *Value = (UINT64) ACPI_GET8 (LogicalAddrPtr);
236 break;
237
238 case 16:
239 *Value = (UINT64) ACPI_GET16 (LogicalAddrPtr);
240 break;
241
242 case 32:
243 *Value = (UINT64) ACPI_GET32 (LogicalAddrPtr);
244 break;
245
246 case 64:
247 *Value = (UINT64) ACPI_GET64 (LogicalAddrPtr);
248 break;
249
250 default:
251 /* BitWidth was already validated */
252 break;
253 }
254 break;
255
256 case ACPI_WRITE:
257
258 switch (BitWidth)
259 {
260 case 8:
261 ACPI_SET8 (LogicalAddrPtr) = (UINT8) *Value;
262 break;
263
264 case 16:
265 ACPI_SET16 (LogicalAddrPtr) = (UINT16) *Value;
266 break;
267
268 case 32:
269 ACPI_SET32 ( LogicalAddrPtr) = (UINT32) *Value;
270 break;
271
272 case 64:
273 ACPI_SET64 (LogicalAddrPtr) = (UINT64) *Value;
274 break;
275
276 default:
277 /* BitWidth was already validated */
278 break;
279 }
280 break;
281
282 default:
283 Status = AE_BAD_PARAMETER;
284 break;
285 }
286
287 return_ACPI_STATUS (Status);
288 }
289
290
291 /*******************************************************************************
292 *
293 * FUNCTION: AcpiExSystemIoSpaceHandler
294 *
295 * PARAMETERS: Function - Read or Write operation
296 * Address - Where in the space to read or write
297 * BitWidth - Field width in bits (8, 16, or 32)
298 * Value - Pointer to in or out value
299 * HandlerContext - Pointer to Handler's context
300 * RegionContext - Pointer to context specific to the
301 * accessed region
302 *
327 BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));
328
329 /* Decode the function parameter */
330
331 switch (Function)
332 {
333 case ACPI_READ:
334
335 Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address,
336 &Value32, BitWidth);
337 *Value = Value32;
338 break;
339
340 case ACPI_WRITE:
341
342 Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address,
343 (UINT32) *Value, BitWidth);
344 break;
345
346 default:
347 Status = AE_BAD_PARAMETER;
348 break;
349 }
350
351 return_ACPI_STATUS (Status);
352 }
353
354
355 /*******************************************************************************
356 *
357 * FUNCTION: AcpiExPciConfigSpaceHandler
358 *
359 * PARAMETERS: Function - Read or Write operation
360 * Address - Where in the space to read or write
361 * BitWidth - Field width in bits (8, 16, or 32)
362 * Value - Pointer to in or out value
363 * HandlerContext - Pointer to Handler's context
364 * RegionContext - Pointer to context specific to the
365 * accessed region
366 *
544 {
545 case ACPI_READ:
546
547 ACPI_MEMCPY (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address),
548 ACPI_DIV_8 (BitWidth));
549 break;
550
551 case ACPI_WRITE:
552
553 ACPI_MEMCPY (ACPI_PHYSADDR_TO_PTR (Address), ACPI_CAST_PTR (char, Value),
554 ACPI_DIV_8 (BitWidth));
555 break;
556
557 default:
558
559 return_ACPI_STATUS (AE_BAD_PARAMETER);
560 }
561
562 return_ACPI_STATUS (AE_OK);
563 }
564
565
|
1 /******************************************************************************
2 *
3 * Module Name: exregion - ACPI default OpRegion (address space) handlers
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2014, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
82 {
83 ACPI_STATUS Status = AE_OK;
84 void *LogicalAddrPtr = NULL;
85 ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext;
86 UINT32 Length;
87 ACPI_SIZE MapLength;
88 ACPI_SIZE PageBoundaryMapLength;
89 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
90 UINT32 Remainder;
91 #endif
92
93
94 ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler);
95
96
97 /* Validate and translate the bit width */
98
99 switch (BitWidth)
100 {
101 case 8:
102
103 Length = 1;
104 break;
105
106 case 16:
107
108 Length = 2;
109 break;
110
111 case 32:
112
113 Length = 4;
114 break;
115
116 case 64:
117
118 Length = 8;
119 break;
120
121 default:
122
123 ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %u",
124 BitWidth));
125 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
126 }
127
128 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
129 /*
130 * Hardware does not support non-aligned data transfers, we must verify
131 * the request.
132 */
133 (void) AcpiUtShortDivide ((UINT64) Address, Length, NULL, &Remainder);
134 if (Remainder != 0)
135 {
136 return_ACPI_STATUS (AE_AML_ALIGNMENT);
137 }
138 #endif
139
140 /*
141 * Does the request fit into the cached memory mapping?
142 * Is 1) Address below the current mapping? OR
219 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
220 "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
221 BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));
222
223 /*
224 * Perform the memory read or write
225 *
226 * Note: For machines that do not support non-aligned transfers, the target
227 * address was checked for alignment above. We do not attempt to break the
228 * transfer up into smaller (byte-size) chunks because the AML specifically
229 * asked for a transfer width that the hardware may require.
230 */
231 switch (Function)
232 {
233 case ACPI_READ:
234
235 *Value = 0;
236 switch (BitWidth)
237 {
238 case 8:
239
240 *Value = (UINT64) ACPI_GET8 (LogicalAddrPtr);
241 break;
242
243 case 16:
244
245 *Value = (UINT64) ACPI_GET16 (LogicalAddrPtr);
246 break;
247
248 case 32:
249
250 *Value = (UINT64) ACPI_GET32 (LogicalAddrPtr);
251 break;
252
253 case 64:
254
255 *Value = (UINT64) ACPI_GET64 (LogicalAddrPtr);
256 break;
257
258 default:
259
260 /* BitWidth was already validated */
261
262 break;
263 }
264 break;
265
266 case ACPI_WRITE:
267
268 switch (BitWidth)
269 {
270 case 8:
271
272 ACPI_SET8 (LogicalAddrPtr, *Value);
273 break;
274
275 case 16:
276
277 ACPI_SET16 (LogicalAddrPtr, *Value);
278 break;
279
280 case 32:
281
282 ACPI_SET32 (LogicalAddrPtr, *Value);
283 break;
284
285 case 64:
286
287 ACPI_SET64 (LogicalAddrPtr, *Value);
288 break;
289
290 default:
291
292 /* BitWidth was already validated */
293
294 break;
295 }
296 break;
297
298 default:
299
300 Status = AE_BAD_PARAMETER;
301 break;
302 }
303
304 return_ACPI_STATUS (Status);
305 }
306
307
308 /*******************************************************************************
309 *
310 * FUNCTION: AcpiExSystemIoSpaceHandler
311 *
312 * PARAMETERS: Function - Read or Write operation
313 * Address - Where in the space to read or write
314 * BitWidth - Field width in bits (8, 16, or 32)
315 * Value - Pointer to in or out value
316 * HandlerContext - Pointer to Handler's context
317 * RegionContext - Pointer to context specific to the
318 * accessed region
319 *
344 BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));
345
346 /* Decode the function parameter */
347
348 switch (Function)
349 {
350 case ACPI_READ:
351
352 Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address,
353 &Value32, BitWidth);
354 *Value = Value32;
355 break;
356
357 case ACPI_WRITE:
358
359 Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address,
360 (UINT32) *Value, BitWidth);
361 break;
362
363 default:
364
365 Status = AE_BAD_PARAMETER;
366 break;
367 }
368
369 return_ACPI_STATUS (Status);
370 }
371
372
373 /*******************************************************************************
374 *
375 * FUNCTION: AcpiExPciConfigSpaceHandler
376 *
377 * PARAMETERS: Function - Read or Write operation
378 * Address - Where in the space to read or write
379 * BitWidth - Field width in bits (8, 16, or 32)
380 * Value - Pointer to in or out value
381 * HandlerContext - Pointer to Handler's context
382 * RegionContext - Pointer to context specific to the
383 * accessed region
384 *
562 {
563 case ACPI_READ:
564
565 ACPI_MEMCPY (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address),
566 ACPI_DIV_8 (BitWidth));
567 break;
568
569 case ACPI_WRITE:
570
571 ACPI_MEMCPY (ACPI_PHYSADDR_TO_PTR (Address), ACPI_CAST_PTR (char, Value),
572 ACPI_DIV_8 (BitWidth));
573 break;
574
575 default:
576
577 return_ACPI_STATUS (AE_BAD_PARAMETER);
578 }
579
580 return_ACPI_STATUS (AE_OK);
581 }
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