* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/acinterp.h>
#include <acpi/amlcode.h>
#include <acpi/acnamesp.h>
-
#define _COMPONENT ACPI_EXECUTER
- ACPI_MODULE_NAME ("exprep")
+ACPI_MODULE_NAME("exprep")
/* Local prototypes */
-
static u32
-acpi_ex_decode_field_access (
- union acpi_operand_object *obj_desc,
- u8 field_flags,
- u32 *return_byte_alignment);
-
+acpi_ex_decode_field_access(union acpi_operand_object *obj_desc,
+ u8 field_flags, u32 * return_byte_alignment);
#ifdef ACPI_UNDER_DEVELOPMENT
static u32
-acpi_ex_generate_access (
- u32 field_bit_offset,
- u32 field_bit_length,
- u32 region_length);
+acpi_ex_generate_access(u32 field_bit_offset,
+ u32 field_bit_length, u32 region_length);
/*******************************************************************************
*
******************************************************************************/
static u32
-acpi_ex_generate_access (
- u32 field_bit_offset,
- u32 field_bit_length,
- u32 region_length)
+acpi_ex_generate_access(u32 field_bit_offset,
+ u32 field_bit_length, u32 region_length)
{
- u32 field_byte_length;
- u32 field_byte_offset;
- u32 field_byte_end_offset;
- u32 access_byte_width;
- u32 field_start_offset;
- u32 field_end_offset;
- u32 minimum_access_width = 0xFFFFFFFF;
- u32 minimum_accesses = 0xFFFFFFFF;
- u32 accesses;
-
-
- ACPI_FUNCTION_TRACE ("ex_generate_access");
-
+ u32 field_byte_length;
+ u32 field_byte_offset;
+ u32 field_byte_end_offset;
+ u32 access_byte_width;
+ u32 field_start_offset;
+ u32 field_end_offset;
+ u32 minimum_access_width = 0xFFFFFFFF;
+ u32 minimum_accesses = 0xFFFFFFFF;
+ u32 accesses;
+
+ ACPI_FUNCTION_TRACE("ex_generate_access");
/* Round Field start offset and length to "minimal" byte boundaries */
- field_byte_offset = ACPI_DIV_8 (ACPI_ROUND_DOWN (field_bit_offset, 8));
- field_byte_end_offset = ACPI_DIV_8 (ACPI_ROUND_UP (field_bit_length +
- field_bit_offset, 8));
- field_byte_length = field_byte_end_offset - field_byte_offset;
+ field_byte_offset = ACPI_DIV_8(ACPI_ROUND_DOWN(field_bit_offset, 8));
+ field_byte_end_offset = ACPI_DIV_8(ACPI_ROUND_UP(field_bit_length +
+ field_bit_offset, 8));
+ field_byte_length = field_byte_end_offset - field_byte_offset;
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "Bit length %d, Bit offset %d\n",
- field_bit_length, field_bit_offset));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Bit length %d, Bit offset %d\n",
+ field_bit_length, field_bit_offset));
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "Byte Length %d, Byte Offset %d, End Offset %d\n",
- field_byte_length, field_byte_offset, field_byte_end_offset));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Byte Length %d, Byte Offset %d, End Offset %d\n",
+ field_byte_length, field_byte_offset,
+ field_byte_end_offset));
/*
* Iterative search for the maximum access width that is both aligned
*
* Start at byte_acc and work upwards to qword_acc max. (1,2,4,8 bytes)
*/
- for (access_byte_width = 1; access_byte_width <= 8; access_byte_width <<= 1) {
+ for (access_byte_width = 1; access_byte_width <= 8;
+ access_byte_width <<= 1) {
/*
* 1) Round end offset up to next access boundary and make sure that
* this does not go beyond the end of the parent region.
* are done. (This does not optimize for the perfectly aligned
* case yet).
*/
- if (ACPI_ROUND_UP (field_byte_end_offset, access_byte_width) <= region_length) {
+ if (ACPI_ROUND_UP(field_byte_end_offset, access_byte_width) <=
+ region_length) {
field_start_offset =
- ACPI_ROUND_DOWN (field_byte_offset, access_byte_width) /
- access_byte_width;
+ ACPI_ROUND_DOWN(field_byte_offset,
+ access_byte_width) /
+ access_byte_width;
field_end_offset =
- ACPI_ROUND_UP ((field_byte_length + field_byte_offset),
- access_byte_width) / access_byte_width;
+ ACPI_ROUND_UP((field_byte_length +
+ field_byte_offset),
+ access_byte_width) /
+ access_byte_width;
accesses = field_end_offset - field_start_offset;
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "access_width %d end is within region\n", access_byte_width));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "access_width %d end is within region\n",
+ access_byte_width));
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "Field Start %d, Field End %d -- requires %d accesses\n",
- field_start_offset, field_end_offset, accesses));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Field Start %d, Field End %d -- requires %d accesses\n",
+ field_start_offset, field_end_offset,
+ accesses));
/* Single access is optimal */
if (accesses <= 1) {
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "Entire field can be accessed with one operation of size %d\n",
- access_byte_width));
- return_VALUE (access_byte_width);
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Entire field can be accessed with one operation of size %d\n",
+ access_byte_width));
+ return_VALUE(access_byte_width);
}
/*
* try the next wider access on next iteration
*/
if (accesses < minimum_accesses) {
- minimum_accesses = accesses;
+ minimum_accesses = accesses;
minimum_access_width = access_byte_width;
}
- }
- else {
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "access_width %d end is NOT within region\n", access_byte_width));
+ } else {
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "access_width %d end is NOT within region\n",
+ access_byte_width));
if (access_byte_width == 1) {
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "Field goes beyond end-of-region!\n"));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Field goes beyond end-of-region!\n"));
/* Field does not fit in the region at all */
- return_VALUE (0);
+ return_VALUE(0);
}
/*
* This width goes beyond the end-of-region, back off to
* previous access
*/
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "Backing off to previous optimal access width of %d\n",
- minimum_access_width));
- return_VALUE (minimum_access_width);
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Backing off to previous optimal access width of %d\n",
+ minimum_access_width));
+ return_VALUE(minimum_access_width);
}
}
* Could not read/write field with one operation,
* just use max access width
*/
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "Cannot access field in one operation, using width 8\n"));
- return_VALUE (8);
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Cannot access field in one operation, using width 8\n"));
+ return_VALUE(8);
}
-#endif /* ACPI_UNDER_DEVELOPMENT */
-
+#endif /* ACPI_UNDER_DEVELOPMENT */
/*******************************************************************************
*
******************************************************************************/
static u32
-acpi_ex_decode_field_access (
- union acpi_operand_object *obj_desc,
- u8 field_flags,
- u32 *return_byte_alignment)
+acpi_ex_decode_field_access(union acpi_operand_object *obj_desc,
+ u8 field_flags, u32 * return_byte_alignment)
{
- u32 access;
- u32 byte_alignment;
- u32 bit_length;
-
-
- ACPI_FUNCTION_TRACE ("ex_decode_field_access");
+ u32 access;
+ u32 byte_alignment;
+ u32 bit_length;
+ ACPI_FUNCTION_TRACE("ex_decode_field_access");
access = (field_flags & AML_FIELD_ACCESS_TYPE_MASK);
#ifdef ACPI_UNDER_DEVELOPMENT
byte_alignment =
- acpi_ex_generate_access (obj_desc->common_field.start_field_bit_offset,
- obj_desc->common_field.bit_length,
- 0xFFFFFFFF /* Temp until we pass region_length as parameter */);
+ acpi_ex_generate_access(obj_desc->common_field.
+ start_field_bit_offset,
+ obj_desc->common_field.bit_length,
+ 0xFFFFFFFF
+ /* Temp until we pass region_length as parameter */
+ );
bit_length = byte_alignment * 8;
#endif
break;
case AML_FIELD_ACCESS_BYTE:
- case AML_FIELD_ACCESS_BUFFER: /* ACPI 2.0 (SMBus Buffer) */
+ case AML_FIELD_ACCESS_BUFFER: /* ACPI 2.0 (SMBus Buffer) */
byte_alignment = 1;
- bit_length = 8;
+ bit_length = 8;
break;
case AML_FIELD_ACCESS_WORD:
byte_alignment = 2;
- bit_length = 16;
+ bit_length = 16;
break;
case AML_FIELD_ACCESS_DWORD:
byte_alignment = 4;
- bit_length = 32;
+ bit_length = 32;
break;
- case AML_FIELD_ACCESS_QWORD: /* ACPI 2.0 */
+ case AML_FIELD_ACCESS_QWORD: /* ACPI 2.0 */
byte_alignment = 8;
- bit_length = 64;
+ bit_length = 64;
break;
default:
/* Invalid field access type */
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Unknown field access type %X\n",
- access));
- return_VALUE (0);
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Unknown field access type %X\n", access));
+ return_VALUE(0);
}
- if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_BUFFER_FIELD) {
+ if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_BUFFER_FIELD) {
/*
* buffer_field access can be on any byte boundary, so the
* byte_alignment is always 1 byte -- regardless of any byte_alignment
}
*return_byte_alignment = byte_alignment;
- return_VALUE (bit_length);
+ return_VALUE(bit_length);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_prep_common_field_object
******************************************************************************/
acpi_status
-acpi_ex_prep_common_field_object (
- union acpi_operand_object *obj_desc,
- u8 field_flags,
- u8 field_attribute,
- u32 field_bit_position,
- u32 field_bit_length)
+acpi_ex_prep_common_field_object(union acpi_operand_object *obj_desc,
+ u8 field_flags,
+ u8 field_attribute,
+ u32 field_bit_position, u32 field_bit_length)
{
- u32 access_bit_width;
- u32 byte_alignment;
- u32 nearest_byte_address;
-
-
- ACPI_FUNCTION_TRACE ("ex_prep_common_field_object");
+ u32 access_bit_width;
+ u32 byte_alignment;
+ u32 nearest_byte_address;
+ ACPI_FUNCTION_TRACE("ex_prep_common_field_object");
/*
* Note: the structure being initialized is the
* For all other access types (Byte, Word, Dword, Qword), the Bitwidth is
* the same (equivalent) as the byte_alignment.
*/
- access_bit_width = acpi_ex_decode_field_access (obj_desc, field_flags,
- &byte_alignment);
+ access_bit_width = acpi_ex_decode_field_access(obj_desc, field_flags,
+ &byte_alignment);
if (!access_bit_width) {
- return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
+ return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
}
/* Setup width (access granularity) fields */
obj_desc->common_field.access_byte_width = (u8)
- ACPI_DIV_8 (access_bit_width); /* 1, 2, 4, 8 */
+ ACPI_DIV_8(access_bit_width); /* 1, 2, 4, 8 */
obj_desc->common_field.access_bit_width = (u8) access_bit_width;
* region or buffer.
*/
nearest_byte_address =
- ACPI_ROUND_BITS_DOWN_TO_BYTES (field_bit_position);
+ ACPI_ROUND_BITS_DOWN_TO_BYTES(field_bit_position);
obj_desc->common_field.base_byte_offset = (u32)
- ACPI_ROUND_DOWN (nearest_byte_address, byte_alignment);
+ ACPI_ROUND_DOWN(nearest_byte_address, byte_alignment);
/*
* start_field_bit_offset is the offset of the first bit of the field within
* a field datum.
*/
obj_desc->common_field.start_field_bit_offset = (u8)
- (field_bit_position - ACPI_MUL_8 (obj_desc->common_field.base_byte_offset));
+ (field_bit_position -
+ ACPI_MUL_8(obj_desc->common_field.base_byte_offset));
/*
* Does the entire field fit within a single field access element? (datum)
* (i.e., without crossing a datum boundary)
*/
- if ((obj_desc->common_field.start_field_bit_offset + field_bit_length) <=
- (u16) access_bit_width) {
+ if ((obj_desc->common_field.start_field_bit_offset +
+ field_bit_length) <= (u16) access_bit_width) {
obj_desc->common.flags |= AOPOBJ_SINGLE_DATUM;
}
- return_ACPI_STATUS (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_prep_field_value
*
******************************************************************************/
-acpi_status
-acpi_ex_prep_field_value (
- struct acpi_create_field_info *info)
+acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info)
{
- union acpi_operand_object *obj_desc;
- u32 type;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("ex_prep_field_value");
+ union acpi_operand_object *obj_desc;
+ u32 type;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE("ex_prep_field_value");
/* Parameter validation */
if (info->field_type != ACPI_TYPE_LOCAL_INDEX_FIELD) {
if (!info->region_node) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null region_node\n"));
- return_ACPI_STATUS (AE_AML_NO_OPERAND);
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Null region_node\n"));
+ return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
- type = acpi_ns_get_type (info->region_node);
+ type = acpi_ns_get_type(info->region_node);
if (type != ACPI_TYPE_REGION) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Needed Region, found type %X (%s)\n",
- type, acpi_ut_get_type_name (type)));
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Needed Region, found type %X (%s)\n",
+ type, acpi_ut_get_type_name(type)));
- return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+ return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
}
/* Allocate a new field object */
- obj_desc = acpi_ut_create_internal_object (info->field_type);
+ obj_desc = acpi_ut_create_internal_object(info->field_type);
if (!obj_desc) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Initialize areas of the object that are common to all fields */
obj_desc->common_field.node = info->field_node;
- status = acpi_ex_prep_common_field_object (obj_desc, info->field_flags,
- info->attribute, info->field_bit_position, info->field_bit_length);
- if (ACPI_FAILURE (status)) {
- acpi_ut_delete_object_desc (obj_desc);
- return_ACPI_STATUS (status);
+ status = acpi_ex_prep_common_field_object(obj_desc, info->field_flags,
+ info->attribute,
+ info->field_bit_position,
+ info->field_bit_length);
+ if (ACPI_FAILURE(status)) {
+ acpi_ut_delete_object_desc(obj_desc);
+ return_ACPI_STATUS(status);
}
/* Initialize areas of the object that are specific to the field type */
switch (info->field_type) {
case ACPI_TYPE_LOCAL_REGION_FIELD:
- obj_desc->field.region_obj = acpi_ns_get_attached_object (info->region_node);
+ obj_desc->field.region_obj =
+ acpi_ns_get_attached_object(info->region_node);
/* An additional reference for the container */
- acpi_ut_add_reference (obj_desc->field.region_obj);
+ acpi_ut_add_reference(obj_desc->field.region_obj);
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "region_field: bit_off %X, Off %X, Gran %X, Region %p\n",
- obj_desc->field.start_field_bit_offset, obj_desc->field.base_byte_offset,
- obj_desc->field.access_byte_width, obj_desc->field.region_obj));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "region_field: bit_off %X, Off %X, Gran %X, Region %p\n",
+ obj_desc->field.start_field_bit_offset,
+ obj_desc->field.base_byte_offset,
+ obj_desc->field.access_byte_width,
+ obj_desc->field.region_obj));
break;
-
case ACPI_TYPE_LOCAL_BANK_FIELD:
- obj_desc->bank_field.value = info->bank_value;
- obj_desc->bank_field.region_obj = acpi_ns_get_attached_object (
- info->region_node);
- obj_desc->bank_field.bank_obj = acpi_ns_get_attached_object (
- info->register_node);
+ obj_desc->bank_field.value = info->bank_value;
+ obj_desc->bank_field.region_obj =
+ acpi_ns_get_attached_object(info->region_node);
+ obj_desc->bank_field.bank_obj =
+ acpi_ns_get_attached_object(info->register_node);
/* An additional reference for the attached objects */
- acpi_ut_add_reference (obj_desc->bank_field.region_obj);
- acpi_ut_add_reference (obj_desc->bank_field.bank_obj);
+ acpi_ut_add_reference(obj_desc->bank_field.region_obj);
+ acpi_ut_add_reference(obj_desc->bank_field.bank_obj);
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "Bank Field: bit_off %X, Off %X, Gran %X, Region %p, bank_reg %p\n",
- obj_desc->bank_field.start_field_bit_offset,
- obj_desc->bank_field.base_byte_offset,
- obj_desc->field.access_byte_width,
- obj_desc->bank_field.region_obj,
- obj_desc->bank_field.bank_obj));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Bank Field: bit_off %X, Off %X, Gran %X, Region %p, bank_reg %p\n",
+ obj_desc->bank_field.start_field_bit_offset,
+ obj_desc->bank_field.base_byte_offset,
+ obj_desc->field.access_byte_width,
+ obj_desc->bank_field.region_obj,
+ obj_desc->bank_field.bank_obj));
break;
-
case ACPI_TYPE_LOCAL_INDEX_FIELD:
- obj_desc->index_field.index_obj = acpi_ns_get_attached_object (
- info->register_node);
- obj_desc->index_field.data_obj = acpi_ns_get_attached_object (
- info->data_register_node);
- obj_desc->index_field.value = (u32)
- (info->field_bit_position / ACPI_MUL_8 (
- obj_desc->field.access_byte_width));
-
- if (!obj_desc->index_field.data_obj || !obj_desc->index_field.index_obj) {
- ACPI_REPORT_ERROR (("Null Index Object during field prep\n"));
- acpi_ut_delete_object_desc (obj_desc);
- return_ACPI_STATUS (AE_AML_INTERNAL);
+ obj_desc->index_field.index_obj =
+ acpi_ns_get_attached_object(info->register_node);
+ obj_desc->index_field.data_obj =
+ acpi_ns_get_attached_object(info->data_register_node);
+ obj_desc->index_field.value = (u32)
+ (info->field_bit_position /
+ ACPI_MUL_8(obj_desc->field.access_byte_width));
+
+ if (!obj_desc->index_field.data_obj
+ || !obj_desc->index_field.index_obj) {
+ ACPI_REPORT_ERROR(("Null Index Object during field prep\n"));
+ acpi_ut_delete_object_desc(obj_desc);
+ return_ACPI_STATUS(AE_AML_INTERNAL);
}
/* An additional reference for the attached objects */
- acpi_ut_add_reference (obj_desc->index_field.data_obj);
- acpi_ut_add_reference (obj_desc->index_field.index_obj);
-
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "index_field: bit_off %X, Off %X, Value %X, Gran %X, Index %p, Data %p\n",
- obj_desc->index_field.start_field_bit_offset,
- obj_desc->index_field.base_byte_offset,
- obj_desc->index_field.value,
- obj_desc->field.access_byte_width,
- obj_desc->index_field.index_obj,
- obj_desc->index_field.data_obj));
+ acpi_ut_add_reference(obj_desc->index_field.data_obj);
+ acpi_ut_add_reference(obj_desc->index_field.index_obj);
+
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "index_field: bit_off %X, Off %X, Value %X, Gran %X, Index %p, Data %p\n",
+ obj_desc->index_field.start_field_bit_offset,
+ obj_desc->index_field.base_byte_offset,
+ obj_desc->index_field.value,
+ obj_desc->field.access_byte_width,
+ obj_desc->index_field.index_obj,
+ obj_desc->index_field.data_obj));
break;
default:
* Store the constructed descriptor (obj_desc) into the parent Node,
* preserving the current type of that named_obj.
*/
- status = acpi_ns_attach_object (info->field_node, obj_desc,
- acpi_ns_get_type (info->field_node));
+ status = acpi_ns_attach_object(info->field_node, obj_desc,
+ acpi_ns_get_type(info->field_node));
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "Set named_obj %p [%4.4s], obj_desc %p\n",
- info->field_node, acpi_ut_get_node_name (info->field_node), obj_desc));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "Set named_obj %p [%4.4s], obj_desc %p\n",
+ info->field_node,
+ acpi_ut_get_node_name(info->field_node), obj_desc));
/* Remove local reference to the object */
- acpi_ut_remove_reference (obj_desc);
- return_ACPI_STATUS (status);
+ acpi_ut_remove_reference(obj_desc);
+ return_ACPI_STATUS(status);
}
-
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