*****************************************************************************/
/*
- * Copyright (C) 2000 - 2005, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/acdispat.h>
#include <acpi/acinterp.h>
-
#define _COMPONENT ACPI_EXECUTER
- ACPI_MODULE_NAME ("exfield")
-
+ACPI_MODULE_NAME("exfield")
/*******************************************************************************
*
* Buffer, depending on the size of the field.
*
******************************************************************************/
-
acpi_status
-acpi_ex_read_data_from_field (
- struct acpi_walk_state *walk_state,
- union acpi_operand_object *obj_desc,
- union acpi_operand_object **ret_buffer_desc)
+acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state,
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object **ret_buffer_desc)
{
- acpi_status status;
- union acpi_operand_object *buffer_desc;
- acpi_size length;
- void *buffer;
- u8 locked;
-
-
- ACPI_FUNCTION_TRACE_PTR ("ex_read_data_from_field", obj_desc);
+ acpi_status status;
+ union acpi_operand_object *buffer_desc;
+ acpi_size length;
+ void *buffer;
+ u8 locked;
+ ACPI_FUNCTION_TRACE_PTR(ex_read_data_from_field, obj_desc);
/* Parameter validation */
if (!obj_desc) {
- return_ACPI_STATUS (AE_AML_NO_OPERAND);
+ return_ACPI_STATUS(AE_AML_NO_OPERAND);
+ }
+ if (!ret_buffer_desc) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_BUFFER_FIELD) {
+ if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_BUFFER_FIELD) {
/*
* If the buffer_field arguments have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
- status = acpi_ds_get_buffer_field_arguments (obj_desc);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_ds_get_buffer_field_arguments(obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
}
- }
- else if ((ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_LOCAL_REGION_FIELD) &&
- (obj_desc->field.region_obj->region.space_id == ACPI_ADR_SPACE_SMBUS)) {
+ } else
+ if ((ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_REGION_FIELD)
+ && (obj_desc->field.region_obj->region.space_id ==
+ ACPI_ADR_SPACE_SMBUS)) {
/*
* This is an SMBus read. We must create a buffer to hold the data
* and directly access the region handler.
*/
- buffer_desc = acpi_ut_create_buffer_object (ACPI_SMBUS_BUFFER_SIZE);
+ buffer_desc =
+ acpi_ut_create_buffer_object(ACPI_SMBUS_BUFFER_SIZE);
if (!buffer_desc) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Lock entire transaction if requested */
- locked = acpi_ex_acquire_global_lock (obj_desc->common_field.field_flags);
+ locked =
+ acpi_ex_acquire_global_lock(obj_desc->common_field.
+ field_flags);
/*
* Perform the read.
* Note: Smbus protocol value is passed in upper 16-bits of Function
*/
- status = acpi_ex_access_region (obj_desc, 0,
- ACPI_CAST_PTR (acpi_integer, buffer_desc->buffer.pointer),
- ACPI_READ | (obj_desc->field.attribute << 16));
- acpi_ex_release_global_lock (locked);
+ status = acpi_ex_access_region(obj_desc, 0,
+ ACPI_CAST_PTR(acpi_integer,
+ buffer_desc->
+ buffer.pointer),
+ ACPI_READ | (obj_desc->field.
+ attribute << 16));
+ acpi_ex_release_global_lock(locked);
goto exit;
}
*
* Note: Field.length is in bits.
*/
- length = (acpi_size) ACPI_ROUND_BITS_UP_TO_BYTES (obj_desc->field.bit_length);
+ length =
+ (acpi_size) ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->field.bit_length);
if (length > acpi_gbl_integer_byte_width) {
+
/* Field is too large for an Integer, create a Buffer instead */
- buffer_desc = acpi_ut_create_buffer_object (length);
+ buffer_desc = acpi_ut_create_buffer_object(length);
if (!buffer_desc) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
buffer = buffer_desc->buffer.pointer;
- }
- else {
+ } else {
/* Field will fit within an Integer (normal case) */
- buffer_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+ buffer_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!buffer_desc) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
length = acpi_gbl_integer_byte_width;
buffer = &buffer_desc->integer.value;
}
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "field_read [TO]: Obj %p, Type %X, Buf %p, byte_len %X\n",
- obj_desc, ACPI_GET_OBJECT_TYPE (obj_desc), buffer, (u32) length));
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "field_read [FROM]: bit_len %X, bit_off %X, byte_off %X\n",
- obj_desc->common_field.bit_length,
- obj_desc->common_field.start_field_bit_offset,
- obj_desc->common_field.base_byte_offset));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "FieldRead [TO]: Obj %p, Type %X, Buf %p, ByteLen %X\n",
+ obj_desc, ACPI_GET_OBJECT_TYPE(obj_desc), buffer,
+ (u32) length));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "FieldRead [FROM]: BitLen %X, BitOff %X, ByteOff %X\n",
+ obj_desc->common_field.bit_length,
+ obj_desc->common_field.start_field_bit_offset,
+ obj_desc->common_field.base_byte_offset));
/* Lock entire transaction if requested */
- locked = acpi_ex_acquire_global_lock (obj_desc->common_field.field_flags);
+ locked =
+ acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/* Read from the field */
- status = acpi_ex_extract_from_field (obj_desc, buffer, (u32) length);
- acpi_ex_release_global_lock (locked);
+ status = acpi_ex_extract_from_field(obj_desc, buffer, (u32) length);
+ acpi_ex_release_global_lock(locked);
-
-exit:
- if (ACPI_FAILURE (status)) {
- acpi_ut_remove_reference (buffer_desc);
- }
- else if (ret_buffer_desc) {
+ exit:
+ if (ACPI_FAILURE(status)) {
+ acpi_ut_remove_reference(buffer_desc);
+ } else {
*ret_buffer_desc = buffer_desc;
}
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_write_data_to_field
******************************************************************************/
acpi_status
-acpi_ex_write_data_to_field (
- union acpi_operand_object *source_desc,
- union acpi_operand_object *obj_desc,
- union acpi_operand_object **result_desc)
+acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object **result_desc)
{
- acpi_status status;
- u32 length;
- u32 required_length;
- void *buffer;
- void *new_buffer;
- u8 locked;
- union acpi_operand_object *buffer_desc;
-
-
- ACPI_FUNCTION_TRACE_PTR ("ex_write_data_to_field", obj_desc);
+ acpi_status status;
+ u32 length;
+ u32 required_length;
+ void *buffer;
+ void *new_buffer;
+ u8 locked;
+ union acpi_operand_object *buffer_desc;
+ ACPI_FUNCTION_TRACE_PTR(ex_write_data_to_field, obj_desc);
/* Parameter validation */
if (!source_desc || !obj_desc) {
- return_ACPI_STATUS (AE_AML_NO_OPERAND);
+ return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
- if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_BUFFER_FIELD) {
+ if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_BUFFER_FIELD) {
/*
* If the buffer_field arguments have not been previously evaluated,
* evaluate them now and save the results.
*/
if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
- status = acpi_ds_get_buffer_field_arguments (obj_desc);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_ds_get_buffer_field_arguments(obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
}
- }
- else if ((ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_LOCAL_REGION_FIELD) &&
- (obj_desc->field.region_obj->region.space_id == ACPI_ADR_SPACE_SMBUS)) {
+ } else
+ if ((ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_REGION_FIELD)
+ && (obj_desc->field.region_obj->region.space_id ==
+ ACPI_ADR_SPACE_SMBUS)) {
/*
* This is an SMBus write. We will bypass the entire field mechanism
* and handoff the buffer directly to the handler.
*
* Source must be a buffer of sufficient size (ACPI_SMBUS_BUFFER_SIZE).
*/
- if (ACPI_GET_OBJECT_TYPE (source_desc) != ACPI_TYPE_BUFFER) {
- ACPI_REPORT_ERROR (("SMBus write requires Buffer, found type %s\n",
- acpi_ut_get_object_type_name (source_desc)));
+ if (ACPI_GET_OBJECT_TYPE(source_desc) != ACPI_TYPE_BUFFER) {
+ ACPI_ERROR((AE_INFO,
+ "SMBus write requires Buffer, found type %s",
+ acpi_ut_get_object_type_name(source_desc)));
- return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+ return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
if (source_desc->buffer.length < ACPI_SMBUS_BUFFER_SIZE) {
- ACPI_REPORT_ERROR ((
- "SMBus write requires Buffer of length %X, found length %X\n",
- ACPI_SMBUS_BUFFER_SIZE, source_desc->buffer.length));
+ ACPI_ERROR((AE_INFO,
+ "SMBus write requires Buffer of length %X, found length %X",
+ ACPI_SMBUS_BUFFER_SIZE,
+ source_desc->buffer.length));
- return_ACPI_STATUS (AE_AML_BUFFER_LIMIT);
+ return_ACPI_STATUS(AE_AML_BUFFER_LIMIT);
}
- buffer_desc = acpi_ut_create_buffer_object (ACPI_SMBUS_BUFFER_SIZE);
+ buffer_desc =
+ acpi_ut_create_buffer_object(ACPI_SMBUS_BUFFER_SIZE);
if (!buffer_desc) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
buffer = buffer_desc->buffer.pointer;
- ACPI_MEMCPY (buffer, source_desc->buffer.pointer,
- ACPI_SMBUS_BUFFER_SIZE);
+ ACPI_MEMCPY(buffer, source_desc->buffer.pointer,
+ ACPI_SMBUS_BUFFER_SIZE);
/* Lock entire transaction if requested */
- locked = acpi_ex_acquire_global_lock (obj_desc->common_field.field_flags);
+ locked =
+ acpi_ex_acquire_global_lock(obj_desc->common_field.
+ field_flags);
/*
* Perform the write (returns status and perhaps data in the
* same buffer)
* Note: SMBus protocol type is passed in upper 16-bits of Function.
*/
- status = acpi_ex_access_region (obj_desc, 0,
- (acpi_integer *) buffer,
- ACPI_WRITE | (obj_desc->field.attribute << 16));
- acpi_ex_release_global_lock (locked);
+ status = acpi_ex_access_region(obj_desc, 0,
+ (acpi_integer *) buffer,
+ ACPI_WRITE | (obj_desc->field.
+ attribute << 16));
+ acpi_ex_release_global_lock(locked);
*result_desc = buffer_desc;
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
/* Get a pointer to the data to be written */
- switch (ACPI_GET_OBJECT_TYPE (source_desc)) {
+ switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
case ACPI_TYPE_INTEGER:
buffer = &source_desc->integer.value;
- length = sizeof (source_desc->integer.value);
+ length = sizeof(source_desc->integer.value);
break;
case ACPI_TYPE_BUFFER:
break;
default:
- return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+ return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/*
* the ACPI specification.
*/
new_buffer = NULL;
- required_length = ACPI_ROUND_BITS_UP_TO_BYTES (
- obj_desc->common_field.bit_length);
+ required_length =
+ ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->common_field.bit_length);
if (length < required_length) {
+
/* We need to create a new buffer */
- new_buffer = ACPI_MEM_CALLOCATE (required_length);
+ new_buffer = ACPI_ALLOCATE_ZEROED(required_length);
if (!new_buffer) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
/*
* at Byte zero. All unused (upper) bytes of the
* buffer will be 0.
*/
- ACPI_MEMCPY ((char *) new_buffer, (char *) buffer, length);
+ ACPI_MEMCPY((char *)new_buffer, (char *)buffer, length);
buffer = new_buffer;
length = required_length;
}
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "field_write [FROM]: Obj %p (%s:%X), Buf %p, byte_len %X\n",
- source_desc, acpi_ut_get_type_name (ACPI_GET_OBJECT_TYPE (source_desc)),
- ACPI_GET_OBJECT_TYPE (source_desc), buffer, length));
-
- ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD,
- "field_write [TO]: Obj %p (%s:%X), bit_len %X, bit_off %X, byte_off %X\n",
- obj_desc, acpi_ut_get_type_name (ACPI_GET_OBJECT_TYPE (obj_desc)),
- ACPI_GET_OBJECT_TYPE (obj_desc),
- obj_desc->common_field.bit_length,
- obj_desc->common_field.start_field_bit_offset,
- obj_desc->common_field.base_byte_offset));
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n",
+ source_desc,
+ acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE
+ (source_desc)),
+ ACPI_GET_OBJECT_TYPE(source_desc), buffer, length));
+
+ ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+ "FieldWrite [TO]: Obj %p (%s:%X), BitLen %X, BitOff %X, ByteOff %X\n",
+ obj_desc,
+ acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE(obj_desc)),
+ ACPI_GET_OBJECT_TYPE(obj_desc),
+ obj_desc->common_field.bit_length,
+ obj_desc->common_field.start_field_bit_offset,
+ obj_desc->common_field.base_byte_offset));
/* Lock entire transaction if requested */
- locked = acpi_ex_acquire_global_lock (obj_desc->common_field.field_flags);
+ locked =
+ acpi_ex_acquire_global_lock(obj_desc->common_field.field_flags);
/* Write to the field */
- status = acpi_ex_insert_into_field (obj_desc, buffer, length);
- acpi_ex_release_global_lock (locked);
+ status = acpi_ex_insert_into_field(obj_desc, buffer, length);
+ acpi_ex_release_global_lock(locked);
/* Free temporary buffer if we used one */
if (new_buffer) {
- ACPI_MEM_FREE (new_buffer);
+ ACPI_FREE(new_buffer);
}
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
-
-
git.openpandora.org / pandora-kernel.git / blobdiff