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authorLen Brown <len.brown@intel.com>2009-01-09 08:13:17 +0300
committerLen Brown <len.brown@intel.com>2009-01-09 11:30:47 +0300
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/executer/exoparg1.c
parent6620e0c49f577454b772fb381543d60ae53eb885 (diff)
downloadlinux-95b482a8d31116f3f5c2a5089569393234d06385.tar.xz
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/executer/exoparg1.c')
-rw-r--r--drivers/acpi/executer/exoparg1.c1050
1 files changed, 0 insertions, 1050 deletions
diff --git a/drivers/acpi/executer/exoparg1.c b/drivers/acpi/executer/exoparg1.c
deleted file mode 100644
index 52d78b8622be..000000000000
--- a/drivers/acpi/executer/exoparg1.c
+++ /dev/null
@@ -1,1050 +0,0 @@
-
-/******************************************************************************
- *
- * Module Name: exoparg1 - AML execution - opcodes with 1 argument
- *
- *****************************************************************************/
-
-/*
- * 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/accommon.h>
-#include <acpi/acparser.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
-
-#define _COMPONENT ACPI_EXECUTER
-ACPI_MODULE_NAME("exoparg1")
-
-/*!
- * Naming convention for AML interpreter execution routines.
- *
- * The routines that begin execution of AML opcodes are named with a common
- * convention based upon the number of arguments, the number of target operands,
- * and whether or not a value is returned:
- *
- * AcpiExOpcode_xA_yT_zR
- *
- * Where:
- *
- * xA - ARGUMENTS: The number of arguments (input operands) that are
- * required for this opcode type (0 through 6 args).
- * yT - TARGETS: The number of targets (output operands) that are required
- * for this opcode type (0, 1, or 2 targets).
- * zR - RETURN VALUE: Indicates whether this opcode type returns a value
- * as the function return (0 or 1).
- *
- * The AcpiExOpcode* functions are called via the Dispatcher component with
- * fully resolved operands.
-!*/
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_opcode_0A_0T_1R
- *
- * PARAMETERS: walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute operator with no operands, one return value
- *
- ******************************************************************************/
-acpi_status acpi_ex_opcode_0A_0T_1R(struct acpi_walk_state *walk_state)
-{
- acpi_status status = AE_OK;
- union acpi_operand_object *return_desc = NULL;
-
- ACPI_FUNCTION_TRACE_STR(ex_opcode_0A_0T_1R,
- acpi_ps_get_opcode_name(walk_state->opcode));
-
- /* Examine the AML opcode */
-
- switch (walk_state->opcode) {
- case AML_TIMER_OP: /* Timer () */
-
- /* Create a return object of type Integer */
-
- return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
- return_desc->integer.value = acpi_os_get_timer();
- break;
-
- default: /* Unknown opcode */
-
- ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- break;
- }
-
- cleanup:
-
- /* Delete return object on error */
-
- if ((ACPI_FAILURE(status)) || walk_state->result_obj) {
- acpi_ut_remove_reference(return_desc);
- walk_state->result_obj = NULL;
- } else {
- /* Save the return value */
-
- walk_state->result_obj = return_desc;
- }
-
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_opcode_1A_0T_0R
- *
- * PARAMETERS: walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on
- * object stack
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_opcode_1A_0T_0R(struct acpi_walk_state *walk_state)
-{
- union acpi_operand_object **operand = &walk_state->operands[0];
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_0T_0R,
- acpi_ps_get_opcode_name(walk_state->opcode));
-
- /* Examine the AML opcode */
-
- switch (walk_state->opcode) {
- case AML_RELEASE_OP: /* Release (mutex_object) */
-
- status = acpi_ex_release_mutex(operand[0], walk_state);
- break;
-
- case AML_RESET_OP: /* Reset (event_object) */
-
- status = acpi_ex_system_reset_event(operand[0]);
- break;
-
- case AML_SIGNAL_OP: /* Signal (event_object) */
-
- status = acpi_ex_system_signal_event(operand[0]);
- break;
-
- case AML_SLEEP_OP: /* Sleep (msec_time) */
-
- status = acpi_ex_system_do_suspend(operand[0]->integer.value);
- break;
-
- case AML_STALL_OP: /* Stall (usec_time) */
-
- status =
- acpi_ex_system_do_stall((u32) operand[0]->integer.value);
- break;
-
- case AML_UNLOAD_OP: /* Unload (Handle) */
-
- status = acpi_ex_unload_table(operand[0]);
- break;
-
- default: /* Unknown opcode */
-
- ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- break;
- }
-
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_opcode_1A_1T_0R
- *
- * PARAMETERS: walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute opcode with one argument, one target, and no
- * return value.
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_opcode_1A_1T_0R(struct acpi_walk_state *walk_state)
-{
- acpi_status status = AE_OK;
- union acpi_operand_object **operand = &walk_state->operands[0];
-
- ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_1T_0R,
- acpi_ps_get_opcode_name(walk_state->opcode));
-
- /* Examine the AML opcode */
-
- switch (walk_state->opcode) {
- case AML_LOAD_OP:
-
- status = acpi_ex_load_op(operand[0], operand[1], walk_state);
- break;
-
- default: /* Unknown opcode */
-
- ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- goto cleanup;
- }
-
- cleanup:
-
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_opcode_1A_1T_1R
- *
- * PARAMETERS: walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute opcode with one argument, one target, and a
- * return value.
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state)
-{
- acpi_status status = AE_OK;
- union acpi_operand_object **operand = &walk_state->operands[0];
- union acpi_operand_object *return_desc = NULL;
- union acpi_operand_object *return_desc2 = NULL;
- u32 temp32;
- u32 i;
- acpi_integer power_of_ten;
- acpi_integer digit;
-
- ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_1T_1R,
- acpi_ps_get_opcode_name(walk_state->opcode));
-
- /* Examine the AML opcode */
-
- switch (walk_state->opcode) {
- case AML_BIT_NOT_OP:
- case AML_FIND_SET_LEFT_BIT_OP:
- case AML_FIND_SET_RIGHT_BIT_OP:
- case AML_FROM_BCD_OP:
- case AML_TO_BCD_OP:
- case AML_COND_REF_OF_OP:
-
- /* Create a return object of type Integer for these opcodes */
-
- return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
-
- switch (walk_state->opcode) {
- case AML_BIT_NOT_OP: /* Not (Operand, Result) */
-
- return_desc->integer.value = ~operand[0]->integer.value;
- break;
-
- case AML_FIND_SET_LEFT_BIT_OP: /* find_set_left_bit (Operand, Result) */
-
- return_desc->integer.value = operand[0]->integer.value;
-
- /*
- * Acpi specification describes Integer type as a little
- * endian unsigned value, so this boundary condition is valid.
- */
- for (temp32 = 0; return_desc->integer.value &&
- temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) {
- return_desc->integer.value >>= 1;
- }
-
- return_desc->integer.value = temp32;
- break;
-
- case AML_FIND_SET_RIGHT_BIT_OP: /* find_set_right_bit (Operand, Result) */
-
- return_desc->integer.value = operand[0]->integer.value;
-
- /*
- * The Acpi specification describes Integer type as a little
- * endian unsigned value, so this boundary condition is valid.
- */
- for (temp32 = 0; return_desc->integer.value &&
- temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) {
- return_desc->integer.value <<= 1;
- }
-
- /* Since the bit position is one-based, subtract from 33 (65) */
-
- return_desc->integer.value =
- temp32 ==
- 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - temp32;
- break;
-
- case AML_FROM_BCD_OP: /* from_bcd (BCDValue, Result) */
-
- /*
- * The 64-bit ACPI integer can hold 16 4-bit BCD characters
- * (if table is 32-bit, integer can hold 8 BCD characters)
- * Convert each 4-bit BCD value
- */
- power_of_ten = 1;
- return_desc->integer.value = 0;
- digit = operand[0]->integer.value;
-
- /* Convert each BCD digit (each is one nybble wide) */
-
- for (i = 0;
- (i < acpi_gbl_integer_nybble_width) && (digit > 0);
- i++) {
-
- /* Get the least significant 4-bit BCD digit */
-
- temp32 = ((u32) digit) & 0xF;
-
- /* Check the range of the digit */
-
- if (temp32 > 9) {
- ACPI_ERROR((AE_INFO,
- "BCD digit too large (not decimal): 0x%X",
- temp32));
-
- status = AE_AML_NUMERIC_OVERFLOW;
- goto cleanup;
- }
-
- /* Sum the digit into the result with the current power of 10 */
-
- return_desc->integer.value +=
- (((acpi_integer) temp32) * power_of_ten);
-
- /* Shift to next BCD digit */
-
- digit >>= 4;
-
- /* Next power of 10 */
-
- power_of_ten *= 10;
- }
- break;
-
- case AML_TO_BCD_OP: /* to_bcd (Operand, Result) */
-
- return_desc->integer.value = 0;
- digit = operand[0]->integer.value;
-
- /* Each BCD digit is one nybble wide */
-
- for (i = 0;
- (i < acpi_gbl_integer_nybble_width) && (digit > 0);
- i++) {
- (void)acpi_ut_short_divide(digit, 10, &digit,
- &temp32);
-
- /*
- * Insert the BCD digit that resides in the
- * remainder from above
- */
- return_desc->integer.value |=
- (((acpi_integer) temp32) << ACPI_MUL_4(i));
- }
-
- /* Overflow if there is any data left in Digit */
-
- if (digit > 0) {
- ACPI_ERROR((AE_INFO,
- "Integer too large to convert to BCD: %8.8X%8.8X",
- ACPI_FORMAT_UINT64(operand[0]->
- integer.value)));
- status = AE_AML_NUMERIC_OVERFLOW;
- goto cleanup;
- }
- break;
-
- case AML_COND_REF_OF_OP: /* cond_ref_of (source_object, Result) */
-
- /*
- * This op is a little strange because the internal return value is
- * different than the return value stored in the result descriptor
- * (There are really two return values)
- */
- if ((struct acpi_namespace_node *)operand[0] ==
- acpi_gbl_root_node) {
- /*
- * This means that the object does not exist in the namespace,
- * return FALSE
- */
- return_desc->integer.value = 0;
- goto cleanup;
- }
-
- /* Get the object reference, store it, and remove our reference */
-
- status = acpi_ex_get_object_reference(operand[0],
- &return_desc2,
- walk_state);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- status =
- acpi_ex_store(return_desc2, operand[1], walk_state);
- acpi_ut_remove_reference(return_desc2);
-
- /* The object exists in the namespace, return TRUE */
-
- return_desc->integer.value = ACPI_INTEGER_MAX;
- goto cleanup;
-
- default:
- /* No other opcodes get here */
- break;
- }
- break;
-
- case AML_STORE_OP: /* Store (Source, Target) */
-
- /*
- * A store operand is typically a number, string, buffer or lvalue
- * Be careful about deleting the source object,
- * since the object itself may have been stored.
- */
- status = acpi_ex_store(operand[0], operand[1], walk_state);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* It is possible that the Store already produced a return object */
-
- if (!walk_state->result_obj) {
- /*
- * Normally, we would remove a reference on the Operand[0]
- * parameter; But since it is being used as the internal return
- * object (meaning we would normally increment it), the two
- * cancel out, and we simply don't do anything.
- */
- walk_state->result_obj = operand[0];
- walk_state->operands[0] = NULL; /* Prevent deletion */
- }
- return_ACPI_STATUS(status);
-
- /*
- * ACPI 2.0 Opcodes
- */
- case AML_COPY_OP: /* Copy (Source, Target) */
-
- status =
- acpi_ut_copy_iobject_to_iobject(operand[0], &return_desc,
- walk_state);
- break;
-
- case AML_TO_DECSTRING_OP: /* to_decimal_string (Data, Result) */
-
- status = acpi_ex_convert_to_string(operand[0], &return_desc,
- ACPI_EXPLICIT_CONVERT_DECIMAL);
- if (return_desc == operand[0]) {
-
- /* No conversion performed, add ref to handle return value */
- acpi_ut_add_reference(return_desc);
- }
- break;
-
- case AML_TO_HEXSTRING_OP: /* to_hex_string (Data, Result) */
-
- status = acpi_ex_convert_to_string(operand[0], &return_desc,
- ACPI_EXPLICIT_CONVERT_HEX);
- if (return_desc == operand[0]) {
-
- /* No conversion performed, add ref to handle return value */
- acpi_ut_add_reference(return_desc);
- }
- break;
-
- case AML_TO_BUFFER_OP: /* to_buffer (Data, Result) */
-
- status = acpi_ex_convert_to_buffer(operand[0], &return_desc);
- if (return_desc == operand[0]) {
-
- /* No conversion performed, add ref to handle return value */
- acpi_ut_add_reference(return_desc);
- }
- break;
-
- case AML_TO_INTEGER_OP: /* to_integer (Data, Result) */
-
- status = acpi_ex_convert_to_integer(operand[0], &return_desc,
- ACPI_ANY_BASE);
- if (return_desc == operand[0]) {
-
- /* No conversion performed, add ref to handle return value */
- acpi_ut_add_reference(return_desc);
- }
- break;
-
- case AML_SHIFT_LEFT_BIT_OP: /* shift_left_bit (Source, bit_num) */
- case AML_SHIFT_RIGHT_BIT_OP: /* shift_right_bit (Source, bit_num) */
-
- /* These are two obsolete opcodes */
-
- ACPI_ERROR((AE_INFO,
- "%s is obsolete and not implemented",
- acpi_ps_get_opcode_name(walk_state->opcode)));
- status = AE_SUPPORT;
- goto cleanup;
-
- default: /* Unknown opcode */
-
- ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- goto cleanup;
- }
-
- if (ACPI_SUCCESS(status)) {
-
- /* Store the return value computed above into the target object */
-
- status = acpi_ex_store(return_desc, operand[1], walk_state);
- }
-
- cleanup:
-
- /* Delete return object on error */
-
- if (ACPI_FAILURE(status)) {
- acpi_ut_remove_reference(return_desc);
- }
-
- /* Save return object on success */
-
- else if (!walk_state->result_obj) {
- walk_state->result_obj = return_desc;
- }
-
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ex_opcode_1A_0T_1R
- *
- * PARAMETERS: walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute opcode with one argument, no target, and a return value
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
-{
- union acpi_operand_object **operand = &walk_state->operands[0];
- union acpi_operand_object *temp_desc;
- union acpi_operand_object *return_desc = NULL;
- acpi_status status = AE_OK;
- u32 type;
- acpi_integer value;
-
- ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_0T_1R,
- acpi_ps_get_opcode_name(walk_state->opcode));
-
- /* Examine the AML opcode */
-
- switch (walk_state->opcode) {
- case AML_LNOT_OP: /* LNot (Operand) */
-
- return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
-
- /*
- * Set result to ONES (TRUE) if Value == 0. Note:
- * return_desc->Integer.Value is initially == 0 (FALSE) from above.
- */
- if (!operand[0]->integer.value) {
- return_desc->integer.value = ACPI_INTEGER_MAX;
- }
- break;
-
- case AML_DECREMENT_OP: /* Decrement (Operand) */
- case AML_INCREMENT_OP: /* Increment (Operand) */
-
- /*
- * Create a new integer. Can't just get the base integer and
- * increment it because it may be an Arg or Field.
- */
- return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
-
- /*
- * Since we are expecting a Reference operand, it can be either a
- * NS Node or an internal object.
- */
- temp_desc = operand[0];
- if (ACPI_GET_DESCRIPTOR_TYPE(temp_desc) ==
- ACPI_DESC_TYPE_OPERAND) {
-
- /* Internal reference object - prevent deletion */
-
- acpi_ut_add_reference(temp_desc);
- }
-
- /*
- * Convert the Reference operand to an Integer (This removes a
- * reference on the Operand[0] object)
- *
- * NOTE: We use LNOT_OP here in order to force resolution of the
- * reference operand to an actual integer.
- */
- status =
- acpi_ex_resolve_operands(AML_LNOT_OP, &temp_desc,
- walk_state);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status,
- "While resolving operands for [%s]",
- acpi_ps_get_opcode_name(walk_state->
- opcode)));
-
- goto cleanup;
- }
-
- /*
- * temp_desc is now guaranteed to be an Integer object --
- * Perform the actual increment or decrement
- */
- if (walk_state->opcode == AML_INCREMENT_OP) {
- return_desc->integer.value =
- temp_desc->integer.value + 1;
- } else {
- return_desc->integer.value =
- temp_desc->integer.value - 1;
- }
-
- /* Finished with this Integer object */
-
- acpi_ut_remove_reference(temp_desc);
-
- /*
- * Store the result back (indirectly) through the original
- * Reference object
- */
- status = acpi_ex_store(return_desc, operand[0], walk_state);
- break;
-
- case AML_TYPE_OP: /* object_type (source_object) */
-
- /*
- * Note: The operand is not resolved at this point because we want to
- * get the associated object, not its value. For example, we don't
- * want to resolve a field_unit to its value, we want the actual
- * field_unit object.
- */
-
- /* Get the type of the base object */
-
- status =
- acpi_ex_resolve_multiple(walk_state, operand[0], &type,
- NULL);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- /* Allocate a descriptor to hold the type. */
-
- return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
-
- return_desc->integer.value = type;
- break;
-
- case AML_SIZE_OF_OP: /* size_of (source_object) */
-
- /*
- * Note: The operand is not resolved at this point because we want to
- * get the associated object, not its value.
- */
-
- /* Get the base object */
-
- status = acpi_ex_resolve_multiple(walk_state,
- operand[0], &type,
- &temp_desc);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- /*
- * The type of the base object must be integer, buffer, string, or
- * package. All others are not supported.
- *
- * NOTE: Integer is not specifically supported by the ACPI spec,
- * but is supported implicitly via implicit operand conversion.
- * rather than bother with conversion, we just use the byte width
- * global (4 or 8 bytes).
- */
- switch (type) {
- case ACPI_TYPE_INTEGER:
- value = acpi_gbl_integer_byte_width;
- break;
-
- case ACPI_TYPE_STRING:
- value = temp_desc->string.length;
- break;
-
- case ACPI_TYPE_BUFFER:
-
- /* Buffer arguments may not be evaluated at this point */
-
- status = acpi_ds_get_buffer_arguments(temp_desc);
- value = temp_desc->buffer.length;
- break;
-
- case ACPI_TYPE_PACKAGE:
-
- /* Package arguments may not be evaluated at this point */
-
- status = acpi_ds_get_package_arguments(temp_desc);
- value = temp_desc->package.count;
- break;
-
- default:
- ACPI_ERROR((AE_INFO,
- "Operand must be Buffer/Integer/String/Package - found type %s",
- acpi_ut_get_type_name(type)));
- status = AE_AML_OPERAND_TYPE;
- goto cleanup;
- }
-
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- /*
- * Now that we have the size of the object, create a result
- * object to hold the value
- */
- return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
-
- return_desc->integer.value = value;
- break;
-
- case AML_REF_OF_OP: /* ref_of (source_object) */
-
- status =
- acpi_ex_get_object_reference(operand[0], &return_desc,
- walk_state);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
- break;
-
- case AML_DEREF_OF_OP: /* deref_of (obj_reference | String) */
-
- /* Check for a method local or argument, or standalone String */
-
- if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) ==
- ACPI_DESC_TYPE_NAMED) {
- temp_desc =
- acpi_ns_get_attached_object((struct
- acpi_namespace_node *)
- operand[0]);
- if (temp_desc
- &&
- ((ACPI_GET_OBJECT_TYPE(temp_desc) ==
- ACPI_TYPE_STRING)
- || (ACPI_GET_OBJECT_TYPE(temp_desc) ==
- ACPI_TYPE_LOCAL_REFERENCE))) {
- operand[0] = temp_desc;
- acpi_ut_add_reference(temp_desc);
- } else {
- status = AE_AML_OPERAND_TYPE;
- goto cleanup;
- }
- } else {
- switch (ACPI_GET_OBJECT_TYPE(operand[0])) {
- case ACPI_TYPE_LOCAL_REFERENCE:
- /*
- * This is a deref_of (local_x | arg_x)
- *
- * Must resolve/dereference the local/arg reference first
- */
- switch (operand[0]->reference.class) {
- case ACPI_REFCLASS_LOCAL:
- case ACPI_REFCLASS_ARG:
-
- /* Set Operand[0] to the value of the local/arg */
-
- status =
- acpi_ds_method_data_get_value
- (operand[0]->reference.class,
- operand[0]->reference.value,
- walk_state, &temp_desc);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- /*
- * Delete our reference to the input object and
- * point to the object just retrieved
- */
- acpi_ut_remove_reference(operand[0]);
- operand[0] = temp_desc;
- break;
-
- case ACPI_REFCLASS_REFOF:
-
- /* Get the object to which the reference refers */
-
- temp_desc =
- operand[0]->reference.object;
- acpi_ut_remove_reference(operand[0]);
- operand[0] = temp_desc;
- break;
-
- default:
-
- /* Must be an Index op - handled below */
- break;
- }
- break;
-
- case ACPI_TYPE_STRING:
- break;
-
- default:
- status = AE_AML_OPERAND_TYPE;
- goto cleanup;
- }
- }
-
- if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) !=
- ACPI_DESC_TYPE_NAMED) {
- if (ACPI_GET_OBJECT_TYPE(operand[0]) ==
- ACPI_TYPE_STRING) {
- /*
- * This is a deref_of (String). The string is a reference
- * to a named ACPI object.
- *
- * 1) Find the owning Node
- * 2) Dereference the node to an actual object. Could be a
- * Field, so we need to resolve the node to a value.
- */
- status =
- acpi_ns_get_node(walk_state->scope_info->
- scope.node,
- operand[0]->string.pointer,
- ACPI_NS_SEARCH_PARENT,
- ACPI_CAST_INDIRECT_PTR
- (struct
- acpi_namespace_node,
- &return_desc));
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- status =
- acpi_ex_resolve_node_to_value
- (ACPI_CAST_INDIRECT_PTR
- (struct acpi_namespace_node, &return_desc),
- walk_state);
- goto cleanup;
- }
- }
-
- /* Operand[0] may have changed from the code above */
-
- if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) ==
- ACPI_DESC_TYPE_NAMED) {
- /*
- * This is a deref_of (object_reference)
- * Get the actual object from the Node (This is the dereference).
- * This case may only happen when a local_x or arg_x is
- * dereferenced above.
- */
- return_desc = acpi_ns_get_attached_object((struct
- acpi_namespace_node
- *)
- operand[0]);
- acpi_ut_add_reference(return_desc);
- } else {
- /*
- * This must be a reference object produced by either the
- * Index() or ref_of() operator
- */
- switch (operand[0]->reference.class) {
- case ACPI_REFCLASS_INDEX:
-
- /*
- * The target type for the Index operator must be
- * either a Buffer or a Package
- */
- switch (operand[0]->reference.target_type) {
- case ACPI_TYPE_BUFFER_FIELD:
-
- temp_desc =
- operand[0]->reference.object;
-
- /*
- * Create a new object that contains one element of the
- * buffer -- the element pointed to by the index.
- *
- * NOTE: index into a buffer is NOT a pointer to a
- * sub-buffer of the main buffer, it is only a pointer to a
- * single element (byte) of the buffer!
- */
- return_desc =
- acpi_ut_create_internal_object
- (ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
-
- /*
- * Since we are returning the value of the buffer at the
- * indexed location, we don't need to add an additional
- * reference to the buffer itself.
- */
- return_desc->integer.value =
- temp_desc->buffer.
- pointer[operand[0]->reference.
- value];
- break;
-
- case ACPI_TYPE_PACKAGE:
-
- /*
- * Return the referenced element of the package. We must
- * add another reference to the referenced object, however.
- */
- return_desc =
- *(operand[0]->reference.where);
- if (return_desc) {
- acpi_ut_add_reference
- (return_desc);
- }
- break;
-
- default:
-
- ACPI_ERROR((AE_INFO,
- "Unknown Index TargetType %X in reference object %p",
- operand[0]->reference.
- target_type, operand[0]));
- status = AE_AML_OPERAND_TYPE;
- goto cleanup;
- }
- break;
-
- case ACPI_REFCLASS_REFOF:
-
- return_desc = operand[0]->reference.object;
-
- if (ACPI_GET_DESCRIPTOR_TYPE(return_desc) ==
- ACPI_DESC_TYPE_NAMED) {
- return_desc =
- acpi_ns_get_attached_object((struct
- acpi_namespace_node
- *)
- return_desc);
- }
-
- /* Add another reference to the object! */
-
- acpi_ut_add_reference(return_desc);
- break;
-
- default:
- ACPI_ERROR((AE_INFO,
- "Unknown class in reference(%p) - %2.2X",
- operand[0],
- operand[0]->reference.class));
-
- status = AE_TYPE;
- goto cleanup;
- }
- }
- break;
-
- default:
-
- ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- goto cleanup;
- }
-
- cleanup:
-
- /* Delete return object on error */
-
- if (ACPI_FAILURE(status)) {
- acpi_ut_remove_reference(return_desc);
- }
-
- /* Save return object on success */
-
- else {
- walk_state->result_obj = return_desc;
- }
-
- return_ACPI_STATUS(status);
-}