| exprep.c (77424) | exprep.c (78986) |
|---|---|
| 1 2/****************************************************************************** 3 * 4 * Module Name: exprep - ACPI AML (p-code) execution - field prep utilities | 1 2/****************************************************************************** 3 * 4 * Module Name: exprep - ACPI AML (p-code) execution - field prep utilities |
| 5 * $Revision: 89 $ | 5 * $Revision: 90 $ |
| 6 * 7 *****************************************************************************/ 8 9/****************************************************************************** 10 * 11 * 1. Copyright Notice 12 * 13 * Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp. --- 241 unchanged lines hidden (view full) --- 255 AccessBitWidth = AcpiExDecodeFieldAccessType ( 256 ((FieldFlags & ACCESS_TYPE_MASK) >> ACCESS_TYPE_SHIFT), 257 ObjDesc->Field.BitLength); 258 if (!AccessBitWidth) 259 { 260 return_ACPI_STATUS (AE_AML_OPERAND_VALUE); 261 } 262 | 6 * 7 *****************************************************************************/ 8 9/****************************************************************************** 10 * 11 * 1. Copyright Notice 12 * 13 * Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp. --- 241 unchanged lines hidden (view full) --- 255 AccessBitWidth = AcpiExDecodeFieldAccessType ( 256 ((FieldFlags & ACCESS_TYPE_MASK) >> ACCESS_TYPE_SHIFT), 257 ObjDesc->Field.BitLength); 258 if (!AccessBitWidth) 259 { 260 return_ACPI_STATUS (AE_AML_OPERAND_VALUE); 261 } 262 |
| 263 /* Setup granularity-based fields */ | 263 /* Setup width (access granularity) fields */ |
| 264 265 ObjDesc->CommonField.AccessBitWidth = (UINT8) AccessBitWidth; /* 8, 16, 32, 64 */ 266 ObjDesc->CommonField.AccessByteWidth = (UINT8) DIV_8 (AccessBitWidth); /* 1, 2, 4, 8 */ 267 268 if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD) 269 { 270 /* 271 * BufferField access can be on any byte boundary, so the 272 * granularity is always 8 273 */ 274 AccessBitWidth = 8; 275 } 276 | 264 265 ObjDesc->CommonField.AccessBitWidth = (UINT8) AccessBitWidth; /* 8, 16, 32, 64 */ 266 ObjDesc->CommonField.AccessByteWidth = (UINT8) DIV_8 (AccessBitWidth); /* 1, 2, 4, 8 */ 267 268 if (ObjDesc->Common.Type == ACPI_TYPE_BUFFER_FIELD) 269 { 270 /* 271 * BufferField access can be on any byte boundary, so the 272 * granularity is always 8 273 */ 274 AccessBitWidth = 8; 275 } 276 |
| 277 |
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| 277 /* 278 * BaseByteOffset is the address of the start of the field within the region. It is 279 * the byte address of the first *datum* (field-width data unit) of the field. 280 * (i.e., the first datum that contains at least the first *bit* of the field.) 281 */ 282 NearestByteAddress = ROUND_BITS_DOWN_TO_BYTES (FieldBitPosition); 283 ObjDesc->CommonField.BaseByteOffset = ROUND_DOWN (NearestByteAddress, | 278 /* 279 * BaseByteOffset is the address of the start of the field within the region. It is 280 * the byte address of the first *datum* (field-width data unit) of the field. 281 * (i.e., the first datum that contains at least the first *bit* of the field.) 282 */ 283 NearestByteAddress = ROUND_BITS_DOWN_TO_BYTES (FieldBitPosition); 284 ObjDesc->CommonField.BaseByteOffset = ROUND_DOWN (NearestByteAddress, |
| 284 ObjDesc->CommonField.AccessByteWidth); | 285 DIV_8 (AccessBitWidth)); |
| 285 286 /* 287 * StartFieldBitOffset is the offset of the first bit of the field within a field datum. 288 * This is calculated as the number of bits from the BaseByteOffset. In other words, 289 * the start of the field is relative to a byte address, regardless of the access type 290 * of the field. 291 */ 292 ObjDesc->CommonField.StartFieldBitOffset = (UINT8) (MOD_8 (FieldBitPosition)); --- 332 unchanged lines hidden --- | 286 287 /* 288 * StartFieldBitOffset is the offset of the first bit of the field within a field datum. 289 * This is calculated as the number of bits from the BaseByteOffset. In other words, 290 * the start of the field is relative to a byte address, regardless of the access type 291 * of the field. 292 */ 293 ObjDesc->CommonField.StartFieldBitOffset = (UINT8) (MOD_8 (FieldBitPosition)); --- 332 unchanged lines hidden --- |