diff options
Diffstat (limited to 'drivers/acpi/executer/exfield.c')
| -rw-r--r-- | drivers/acpi/executer/exfield.c | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/drivers/acpi/executer/exfield.c b/drivers/acpi/executer/exfield.c deleted file mode 100644 index 3e440d84226a..000000000000 --- a/drivers/acpi/executer/exfield.c +++ /dev/null @@ -1,339 +0,0 @@ -/****************************************************************************** - * - * Module Name: exfield - ACPI AML (p-code) execution - field manipulation - * - *****************************************************************************/ - -/* - * Copyright (C) 2000 - 2008, Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - */ - -#include <acpi/acpi.h> -#include <acpi/acdispat.h> -#include <acpi/acinterp.h> - -#define _COMPONENT ACPI_EXECUTER -ACPI_MODULE_NAME("exfield") - -/******************************************************************************* - * - * FUNCTION: acpi_ex_read_data_from_field - * - * PARAMETERS: walk_state - Current execution state - * obj_desc - The named field - * ret_buffer_desc - Where the return data object is stored - * - * RETURN: Status - * - * DESCRIPTION: Read from a named field. Returns either an Integer or a - * 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_status status; - union acpi_operand_object *buffer_desc; - acpi_size length; - void *buffer; - - ACPI_FUNCTION_TRACE_PTR(ex_read_data_from_field, obj_desc); - - /* Parameter validation */ - - if (!obj_desc) { - 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 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); - } - } - } 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); - if (!buffer_desc) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* Lock entire transaction if requested */ - - 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(obj_desc->common_field.field_flags); - goto exit; - } - - /* - * Allocate a buffer for the contents of the field. - * - * If the field is larger than the size of an acpi_integer, create - * a BUFFER to hold it. Otherwise, use an INTEGER. This allows - * the use of arithmetic operators on the returned value if the - * field size is equal or smaller than an Integer. - * - * Note: Field.length is in bits. - */ - 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); - if (!buffer_desc) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - buffer = buffer_desc->buffer.pointer; - } else { - /* Field will fit within an Integer (normal case) */ - - buffer_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); - if (!buffer_desc) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - length = acpi_gbl_integer_byte_width; - buffer_desc->integer.value = 0; - buffer = &buffer_desc->integer.value; - } - - 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 */ - - 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(obj_desc->common_field.field_flags); - - exit: - if (ACPI_FAILURE(status)) { - acpi_ut_remove_reference(buffer_desc); - } else { - *ret_buffer_desc = buffer_desc; - } - - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_write_data_to_field - * - * PARAMETERS: source_desc - Contains data to write - * obj_desc - The named field - * result_desc - Where the return value is returned, if any - * - * RETURN: Status - * - * DESCRIPTION: Write to a named 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_status status; - u32 length; - void *buffer; - 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); - } - - 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); - } - } - } 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_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); - } - - if (source_desc->buffer.length < ACPI_SMBUS_BUFFER_SIZE) { - 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); - } - - buffer_desc = - acpi_ut_create_buffer_object(ACPI_SMBUS_BUFFER_SIZE); - if (!buffer_desc) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - buffer = buffer_desc->buffer.pointer; - ACPI_MEMCPY(buffer, source_desc->buffer.pointer, - ACPI_SMBUS_BUFFER_SIZE); - - /* Lock entire transaction if requested */ - - 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(obj_desc->common_field.field_flags); - - *result_desc = buffer_desc; - return_ACPI_STATUS(status); - } - - /* Get a pointer to the data to be written */ - - switch (ACPI_GET_OBJECT_TYPE(source_desc)) { - case ACPI_TYPE_INTEGER: - buffer = &source_desc->integer.value; - length = sizeof(source_desc->integer.value); - break; - - case ACPI_TYPE_BUFFER: - buffer = source_desc->buffer.pointer; - length = source_desc->buffer.length; - break; - - case ACPI_TYPE_STRING: - buffer = source_desc->string.pointer; - length = source_desc->string.length; - break; - - default: - return_ACPI_STATUS(AE_AML_OPERAND_TYPE); - } - - 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 */ - - 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(obj_desc->common_field.field_flags); - - return_ACPI_STATUS(status); -} |