Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/dispatcher/dsopcode.c b/drivers/acpi/dispatcher/dsopcode.c
new file mode 100644
index 0000000..5c987a0
--- /dev/null
+++ b/drivers/acpi/dispatcher/dsopcode.c
@@ -0,0 +1,1151 @@
+/******************************************************************************
+ *
+ * Module Name: dsopcode - Dispatcher Op Region support and handling of
+ * "control" opcodes
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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/acparser.h>
+#include <acpi/amlcode.h>
+#include <acpi/acdispat.h>
+#include <acpi/acinterp.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acevents.h>
+
+#define _COMPONENT ACPI_DISPATCHER
+ ACPI_MODULE_NAME ("dsopcode")
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_execute_arguments
+ *
+ * PARAMETERS: Node - Parent NS node
+ * aml_length - Length of executable AML
+ * aml_start - Pointer to the AML
+ *
+ * RETURN: Status.
+ *
+ * DESCRIPTION: Late (deferred) execution of region or field arguments
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_execute_arguments (
+ struct acpi_namespace_node *node,
+ struct acpi_namespace_node *scope_node,
+ u32 aml_length,
+ u8 *aml_start)
+{
+ acpi_status status;
+ union acpi_parse_object *op;
+ struct acpi_walk_state *walk_state;
+
+
+ ACPI_FUNCTION_TRACE ("ds_execute_arguments");
+
+
+ /*
+ * Allocate a new parser op to be the root of the parsed tree
+ */
+ op = acpi_ps_alloc_op (AML_INT_EVAL_SUBTREE_OP);
+ if (!op) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Save the Node for use in acpi_ps_parse_aml */
+
+ op->common.node = scope_node;
+
+ /* Create and initialize a new parser state */
+
+ walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL);
+ if (!walk_state) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ status = acpi_ds_init_aml_walk (walk_state, op, NULL, aml_start,
+ aml_length, NULL, 1);
+ if (ACPI_FAILURE (status)) {
+ acpi_ds_delete_walk_state (walk_state);
+ return_ACPI_STATUS (status);
+ }
+
+ /* Mark this parse as a deferred opcode */
+
+ walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP;
+ walk_state->deferred_node = node;
+
+ /* Pass1: Parse the entire declaration */
+
+ status = acpi_ps_parse_aml (walk_state);
+ if (ACPI_FAILURE (status)) {
+ acpi_ps_delete_parse_tree (op);
+ return_ACPI_STATUS (status);
+ }
+
+ /* Get and init the Op created above */
+
+ op->common.node = node;
+ acpi_ps_delete_parse_tree (op);
+
+ /* Evaluate the deferred arguments */
+
+ op = acpi_ps_alloc_op (AML_INT_EVAL_SUBTREE_OP);
+ if (!op) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ op->common.node = scope_node;
+
+ /* Create and initialize a new parser state */
+
+ walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL);
+ if (!walk_state) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Execute the opcode and arguments */
+
+ status = acpi_ds_init_aml_walk (walk_state, op, NULL, aml_start,
+ aml_length, NULL, 3);
+ if (ACPI_FAILURE (status)) {
+ acpi_ds_delete_walk_state (walk_state);
+ return_ACPI_STATUS (status);
+ }
+
+ /* Mark this execution as a deferred opcode */
+
+ walk_state->deferred_node = node;
+ status = acpi_ps_parse_aml (walk_state);
+ acpi_ps_delete_parse_tree (op);
+ return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_get_buffer_field_arguments
+ *
+ * PARAMETERS: obj_desc - A valid buffer_field object
+ *
+ * RETURN: Status.
+ *
+ * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late
+ * evaluation of these field attributes.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_get_buffer_field_arguments (
+ union acpi_operand_object *obj_desc)
+{
+ union acpi_operand_object *extra_desc;
+ struct acpi_namespace_node *node;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ds_get_buffer_field_arguments", obj_desc);
+
+
+ if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* Get the AML pointer (method object) and buffer_field node */
+
+ extra_desc = acpi_ns_get_secondary_object (obj_desc);
+ node = obj_desc->buffer_field.node;
+
+ ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname (ACPI_TYPE_BUFFER_FIELD, node, NULL));
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] buffer_field Arg Init\n",
+ acpi_ut_get_node_name (node)));
+
+ /* Execute the AML code for the term_arg arguments */
+
+ status = acpi_ds_execute_arguments (node, acpi_ns_get_parent_node (node),
+ extra_desc->extra.aml_length, extra_desc->extra.aml_start);
+ return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_get_buffer_arguments
+ *
+ * PARAMETERS: obj_desc - A valid Buffer object
+ *
+ * RETURN: Status.
+ *
+ * DESCRIPTION: Get Buffer length and initializer byte list. This implements
+ * the late evaluation of these attributes.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_get_buffer_arguments (
+ union acpi_operand_object *obj_desc)
+{
+ struct acpi_namespace_node *node;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ds_get_buffer_arguments", obj_desc);
+
+
+ if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* Get the Buffer node */
+
+ node = obj_desc->buffer.node;
+ if (!node) {
+ ACPI_REPORT_ERROR ((
+ "No pointer back to NS node in buffer obj %p\n", obj_desc));
+ return_ACPI_STATUS (AE_AML_INTERNAL);
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n"));
+
+ /* Execute the AML code for the term_arg arguments */
+
+ status = acpi_ds_execute_arguments (node, node,
+ obj_desc->buffer.aml_length, obj_desc->buffer.aml_start);
+ return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_get_package_arguments
+ *
+ * PARAMETERS: obj_desc - A valid Package object
+ *
+ * RETURN: Status.
+ *
+ * DESCRIPTION: Get Package length and initializer byte list. This implements
+ * the late evaluation of these attributes.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_get_package_arguments (
+ union acpi_operand_object *obj_desc)
+{
+ struct acpi_namespace_node *node;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ds_get_package_arguments", obj_desc);
+
+
+ if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* Get the Package node */
+
+ node = obj_desc->package.node;
+ if (!node) {
+ ACPI_REPORT_ERROR ((
+ "No pointer back to NS node in package %p\n", obj_desc));
+ return_ACPI_STATUS (AE_AML_INTERNAL);
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n"));
+
+ /* Execute the AML code for the term_arg arguments */
+
+ status = acpi_ds_execute_arguments (node, node,
+ obj_desc->package.aml_length, obj_desc->package.aml_start);
+ return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_get_region_arguments
+ *
+ * PARAMETERS: obj_desc - A valid region object
+ *
+ * RETURN: Status.
+ *
+ * DESCRIPTION: Get region address and length. This implements the late
+ * evaluation of these region attributes.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_get_region_arguments (
+ union acpi_operand_object *obj_desc)
+{
+ struct acpi_namespace_node *node;
+ acpi_status status;
+ union acpi_operand_object *extra_desc;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ds_get_region_arguments", obj_desc);
+
+
+ if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ extra_desc = acpi_ns_get_secondary_object (obj_desc);
+ if (!extra_desc) {
+ return_ACPI_STATUS (AE_NOT_EXIST);
+ }
+
+ /* Get the Region node */
+
+ node = obj_desc->region.node;
+
+ ACPI_DEBUG_EXEC (acpi_ut_display_init_pathname (ACPI_TYPE_REGION, node, NULL));
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] op_region Arg Init at AML %p\n",
+ acpi_ut_get_node_name (node), extra_desc->extra.aml_start));
+
+ /* Execute the argument AML */
+
+ status = acpi_ds_execute_arguments (node, acpi_ns_get_parent_node (node),
+ extra_desc->extra.aml_length, extra_desc->extra.aml_start);
+ return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_initialize_region
+ *
+ * PARAMETERS: Op - A valid region Op object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Front end to ev_initialize_region
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_initialize_region (
+ acpi_handle obj_handle)
+{
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+
+
+ obj_desc = acpi_ns_get_attached_object (obj_handle);
+
+ /* Namespace is NOT locked */
+
+ status = acpi_ev_initialize_region (obj_desc, FALSE);
+ return (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_init_buffer_field
+ *
+ * PARAMETERS: aml_opcode - create_xxx_field
+ * obj_desc - buffer_field object
+ * buffer_desc - Host Buffer
+ * offset_desc - Offset into buffer
+ * Length - Length of field (CREATE_FIELD_OP only)
+ * Result - Where to store the result
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Perform actual initialization of a buffer field
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_init_buffer_field (
+ u16 aml_opcode,
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object *buffer_desc,
+ union acpi_operand_object *offset_desc,
+ union acpi_operand_object *length_desc,
+ union acpi_operand_object *result_desc)
+{
+ u32 offset;
+ u32 bit_offset;
+ u32 bit_count;
+ u8 field_flags;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ds_init_buffer_field", obj_desc);
+
+
+ /* Host object must be a Buffer */
+
+ if (ACPI_GET_OBJECT_TYPE (buffer_desc) != ACPI_TYPE_BUFFER) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Target of Create Field is not a Buffer object - %s\n",
+ acpi_ut_get_object_type_name (buffer_desc)));
+
+ status = AE_AML_OPERAND_TYPE;
+ goto cleanup;
+ }
+
+ /*
+ * The last parameter to all of these opcodes (result_desc) started
+ * out as a name_string, and should therefore now be a NS node
+ * after resolution in acpi_ex_resolve_operands().
+ */
+ if (ACPI_GET_DESCRIPTOR_TYPE (result_desc) != ACPI_DESC_TYPE_NAMED) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(%s) destination not a NS Node [%s]\n",
+ acpi_ps_get_opcode_name (aml_opcode), acpi_ut_get_descriptor_name (result_desc)));
+
+ status = AE_AML_OPERAND_TYPE;
+ goto cleanup;
+ }
+
+ offset = (u32) offset_desc->integer.value;
+
+ /*
+ * Setup the Bit offsets and counts, according to the opcode
+ */
+ switch (aml_opcode) {
+ case AML_CREATE_FIELD_OP:
+
+ /* Offset is in bits, count is in bits */
+
+ bit_offset = offset;
+ bit_count = (u32) length_desc->integer.value;
+ field_flags = AML_FIELD_ACCESS_BYTE;
+ break;
+
+ case AML_CREATE_BIT_FIELD_OP:
+
+ /* Offset is in bits, Field is one bit */
+
+ bit_offset = offset;
+ bit_count = 1;
+ field_flags = AML_FIELD_ACCESS_BYTE;
+ break;
+
+ case AML_CREATE_BYTE_FIELD_OP:
+
+ /* Offset is in bytes, field is one byte */
+
+ bit_offset = 8 * offset;
+ bit_count = 8;
+ field_flags = AML_FIELD_ACCESS_BYTE;
+ break;
+
+ case AML_CREATE_WORD_FIELD_OP:
+
+ /* Offset is in bytes, field is one word */
+
+ bit_offset = 8 * offset;
+ bit_count = 16;
+ field_flags = AML_FIELD_ACCESS_WORD;
+ break;
+
+ case AML_CREATE_DWORD_FIELD_OP:
+
+ /* Offset is in bytes, field is one dword */
+
+ bit_offset = 8 * offset;
+ bit_count = 32;
+ field_flags = AML_FIELD_ACCESS_DWORD;
+ break;
+
+ case AML_CREATE_QWORD_FIELD_OP:
+
+ /* Offset is in bytes, field is one qword */
+
+ bit_offset = 8 * offset;
+ bit_count = 64;
+ field_flags = AML_FIELD_ACCESS_QWORD;
+ break;
+
+ default:
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Unknown field creation opcode %02x\n",
+ aml_opcode));
+ status = AE_AML_BAD_OPCODE;
+ goto cleanup;
+ }
+
+ /* Entire field must fit within the current length of the buffer */
+
+ if ((bit_offset + bit_count) >
+ (8 * (u32) buffer_desc->buffer.length)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Field [%4.4s] size %d exceeds Buffer [%4.4s] size %d (bits)\n",
+ acpi_ut_get_node_name (result_desc),
+ bit_offset + bit_count,
+ acpi_ut_get_node_name (buffer_desc->buffer.node),
+ 8 * (u32) buffer_desc->buffer.length));
+ status = AE_AML_BUFFER_LIMIT;
+ goto cleanup;
+ }
+
+ /*
+ * Initialize areas of the field object that are common to all fields
+ * For field_flags, use LOCK_RULE = 0 (NO_LOCK), UPDATE_RULE = 0 (UPDATE_PRESERVE)
+ */
+ status = acpi_ex_prep_common_field_object (obj_desc, field_flags, 0,
+ bit_offset, bit_count);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ obj_desc->buffer_field.buffer_obj = buffer_desc;
+
+ /* Reference count for buffer_desc inherits obj_desc count */
+
+ buffer_desc->common.reference_count = (u16) (buffer_desc->common.reference_count +
+ obj_desc->common.reference_count);
+
+
+cleanup:
+
+ /* Always delete the operands */
+
+ acpi_ut_remove_reference (offset_desc);
+ acpi_ut_remove_reference (buffer_desc);
+
+ if (aml_opcode == AML_CREATE_FIELD_OP) {
+ acpi_ut_remove_reference (length_desc);
+ }
+
+ /* On failure, delete the result descriptor */
+
+ if (ACPI_FAILURE (status)) {
+ acpi_ut_remove_reference (result_desc); /* Result descriptor */
+ }
+ else {
+ /* Now the address and length are valid for this buffer_field */
+
+ obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID;
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_buffer_field_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * Op - A valid buffer_field Op object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get buffer_field Buffer and Index
+ * Called from acpi_ds_exec_end_op during buffer_field parse tree walk
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_eval_buffer_field_operands (
+ struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+ struct acpi_namespace_node *node;
+ union acpi_parse_object *next_op;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ds_eval_buffer_field_operands", op);
+
+
+ /*
+ * This is where we evaluate the address and length fields of the
+ * create_xxx_field declaration
+ */
+ node = op->common.node;
+
+ /* next_op points to the op that holds the Buffer */
+
+ next_op = op->common.value.arg;
+
+ /* Evaluate/create the address and length operands */
+
+ status = acpi_ds_create_operands (walk_state, next_op);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ obj_desc = acpi_ns_get_attached_object (node);
+ if (!obj_desc) {
+ return_ACPI_STATUS (AE_NOT_EXIST);
+ }
+
+ /* Resolve the operands */
+
+ status = acpi_ex_resolve_operands (op->common.aml_opcode,
+ ACPI_WALK_OPERANDS, walk_state);
+
+ ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
+ acpi_ps_get_opcode_name (op->common.aml_opcode),
+ walk_state->num_operands, "after acpi_ex_resolve_operands");
+
+ if (ACPI_FAILURE (status)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "(%s) bad operand(s) (%X)\n",
+ acpi_ps_get_opcode_name (op->common.aml_opcode), status));
+
+ return_ACPI_STATUS (status);
+ }
+
+ /* Initialize the Buffer Field */
+
+ if (op->common.aml_opcode == AML_CREATE_FIELD_OP) {
+ /* NOTE: Slightly different operands for this opcode */
+
+ status = acpi_ds_init_buffer_field (op->common.aml_opcode, obj_desc,
+ walk_state->operands[0], walk_state->operands[1],
+ walk_state->operands[2], walk_state->operands[3]);
+ }
+ else {
+ /* All other, create_xxx_field opcodes */
+
+ status = acpi_ds_init_buffer_field (op->common.aml_opcode, obj_desc,
+ walk_state->operands[0], walk_state->operands[1],
+ NULL, walk_state->operands[2]);
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_region_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * Op - A valid region Op object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get region address and length
+ * Called from acpi_ds_exec_end_op during op_region parse tree walk
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_eval_region_operands (
+ struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object *operand_desc;
+ struct acpi_namespace_node *node;
+ union acpi_parse_object *next_op;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ds_eval_region_operands", op);
+
+
+ /*
+ * This is where we evaluate the address and length fields of the op_region declaration
+ */
+ node = op->common.node;
+
+ /* next_op points to the op that holds the space_iD */
+
+ next_op = op->common.value.arg;
+
+ /* next_op points to address op */
+
+ next_op = next_op->common.next;
+
+ /* Evaluate/create the address and length operands */
+
+ status = acpi_ds_create_operands (walk_state, next_op);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Resolve the length and address operands to numbers */
+
+ status = acpi_ex_resolve_operands (op->common.aml_opcode, ACPI_WALK_OPERANDS, walk_state);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
+ acpi_ps_get_opcode_name (op->common.aml_opcode),
+ 1, "after acpi_ex_resolve_operands");
+
+ obj_desc = acpi_ns_get_attached_object (node);
+ if (!obj_desc) {
+ return_ACPI_STATUS (AE_NOT_EXIST);
+ }
+
+ /*
+ * Get the length operand and save it
+ * (at Top of stack)
+ */
+ operand_desc = walk_state->operands[walk_state->num_operands - 1];
+
+ obj_desc->region.length = (u32) operand_desc->integer.value;
+ acpi_ut_remove_reference (operand_desc);
+
+ /*
+ * Get the address and save it
+ * (at top of stack - 1)
+ */
+ operand_desc = walk_state->operands[walk_state->num_operands - 2];
+
+ obj_desc->region.address = (acpi_physical_address) operand_desc->integer.value;
+ acpi_ut_remove_reference (operand_desc);
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "rgn_obj %p Addr %8.8X%8.8X Len %X\n",
+ obj_desc,
+ ACPI_FORMAT_UINT64 (obj_desc->region.address),
+ obj_desc->region.length));
+
+ /* Now the address and length are valid for this opregion */
+
+ obj_desc->region.flags |= AOPOBJ_DATA_VALID;
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_data_object_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * Op - A valid data_object Op object
+ * obj_desc - data_object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get the operands and complete the following data object types:
+ * Buffer, Package.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_eval_data_object_operands (
+ struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op,
+ union acpi_operand_object *obj_desc)
+{
+ acpi_status status;
+ union acpi_operand_object *arg_desc;
+ u32 length;
+
+
+ ACPI_FUNCTION_TRACE ("ds_eval_data_object_operands");
+
+
+ /* The first operand (for all of these data objects) is the length */
+
+ status = acpi_ds_create_operand (walk_state, op->common.value.arg, 1);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ status = acpi_ex_resolve_operands (walk_state->opcode,
+ &(walk_state->operands [walk_state->num_operands -1]),
+ walk_state);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /* Extract length operand */
+
+ arg_desc = walk_state->operands [walk_state->num_operands - 1];
+ length = (u32) arg_desc->integer.value;
+
+ /* Cleanup for length operand */
+
+ status = acpi_ds_obj_stack_pop (1, walk_state);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ acpi_ut_remove_reference (arg_desc);
+
+ /*
+ * Create the actual data object
+ */
+ switch (op->common.aml_opcode) {
+ case AML_BUFFER_OP:
+
+ status = acpi_ds_build_internal_buffer_obj (walk_state, op, length, &obj_desc);
+ break;
+
+ case AML_PACKAGE_OP:
+ case AML_VAR_PACKAGE_OP:
+
+ status = acpi_ds_build_internal_package_obj (walk_state, op, length, &obj_desc);
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_AML_BAD_OPCODE);
+ }
+
+ if (ACPI_SUCCESS (status)) {
+ /*
+ * Return the object in the walk_state, unless the parent is a package --
+ * in this case, the return object will be stored in the parse tree
+ * for the package.
+ */
+ if ((!op->common.parent) ||
+ ((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) &&
+ (op->common.parent->common.aml_opcode != AML_VAR_PACKAGE_OP) &&
+ (op->common.parent->common.aml_opcode != AML_NAME_OP))) {
+ walk_state->result_obj = obj_desc;
+ }
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_exec_begin_control_op
+ *
+ * PARAMETERS: walk_list - The list that owns the walk stack
+ * Op - The control Op
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Handles all control ops encountered during control method
+ * execution.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_exec_begin_control_op (
+ struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status = AE_OK;
+ union acpi_generic_state *control_state;
+
+
+ ACPI_FUNCTION_NAME ("ds_exec_begin_control_op");
+
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", op,
+ op->common.aml_opcode, walk_state));
+
+ switch (op->common.aml_opcode) {
+ case AML_IF_OP:
+ case AML_WHILE_OP:
+
+ /*
+ * IF/WHILE: Create a new control state to manage these
+ * constructs. We need to manage these as a stack, in order
+ * to handle nesting.
+ */
+ control_state = acpi_ut_create_control_state ();
+ if (!control_state) {
+ status = AE_NO_MEMORY;
+ break;
+ }
+ /*
+ * Save a pointer to the predicate for multiple executions
+ * of a loop
+ */
+ control_state->control.aml_predicate_start = walk_state->parser_state.aml - 1;
+ control_state->control.package_end = walk_state->parser_state.pkg_end;
+ control_state->control.opcode = op->common.aml_opcode;
+
+
+ /* Push the control state on this walk's control stack */
+
+ acpi_ut_push_generic_state (&walk_state->control_state, control_state);
+ break;
+
+ case AML_ELSE_OP:
+
+ /* Predicate is in the state object */
+ /* If predicate is true, the IF was executed, ignore ELSE part */
+
+ if (walk_state->last_predicate) {
+ status = AE_CTRL_TRUE;
+ }
+
+ break;
+
+ case AML_RETURN_OP:
+
+ break;
+
+ default:
+ break;
+ }
+
+ return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_exec_end_control_op
+ *
+ * PARAMETERS: walk_list - The list that owns the walk stack
+ * Op - The control Op
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Handles all control ops encountered during control method
+ * execution.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_exec_end_control_op (
+ struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status = AE_OK;
+ union acpi_generic_state *control_state;
+
+
+ ACPI_FUNCTION_NAME ("ds_exec_end_control_op");
+
+
+ switch (op->common.aml_opcode) {
+ case AML_IF_OP:
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", op));
+
+ /*
+ * Save the result of the predicate in case there is an
+ * ELSE to come
+ */
+ walk_state->last_predicate =
+ (u8) walk_state->control_state->common.value;
+
+ /*
+ * Pop the control state that was created at the start
+ * of the IF and free it
+ */
+ control_state = acpi_ut_pop_generic_state (&walk_state->control_state);
+ acpi_ut_delete_generic_state (control_state);
+ break;
+
+
+ case AML_ELSE_OP:
+
+ break;
+
+
+ case AML_WHILE_OP:
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op));
+
+ if (walk_state->control_state->common.value) {
+ /* Predicate was true, go back and evaluate it again! */
+
+ status = AE_CTRL_PENDING;
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] termination! Op=%p\n", op));
+
+ /* Pop this control state and free it */
+
+ control_state = acpi_ut_pop_generic_state (&walk_state->control_state);
+
+ walk_state->aml_last_while = control_state->control.aml_predicate_start;
+ acpi_ut_delete_generic_state (control_state);
+ break;
+
+
+ case AML_RETURN_OP:
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+ "[RETURN_OP] Op=%p Arg=%p\n",op, op->common.value.arg));
+
+ /*
+ * One optional operand -- the return value
+ * It can be either an immediate operand or a result that
+ * has been bubbled up the tree
+ */
+ if (op->common.value.arg) {
+ /* Since we have a real Return(), delete any implicit return */
+
+ acpi_ds_clear_implicit_return (walk_state);
+
+ /* Return statement has an immediate operand */
+
+ status = acpi_ds_create_operands (walk_state, op->common.value.arg);
+ if (ACPI_FAILURE (status)) {
+ return (status);
+ }
+
+ /*
+ * If value being returned is a Reference (such as
+ * an arg or local), resolve it now because it may
+ * cease to exist at the end of the method.
+ */
+ status = acpi_ex_resolve_to_value (&walk_state->operands [0], walk_state);
+ if (ACPI_FAILURE (status)) {
+ return (status);
+ }
+
+ /*
+ * Get the return value and save as the last result
+ * value. This is the only place where walk_state->return_desc
+ * is set to anything other than zero!
+ */
+ walk_state->return_desc = walk_state->operands[0];
+ }
+ else if ((walk_state->results) &&
+ (walk_state->results->results.num_results > 0)) {
+ /* Since we have a real Return(), delete any implicit return */
+
+ acpi_ds_clear_implicit_return (walk_state);
+
+ /*
+ * The return value has come from a previous calculation.
+ *
+ * If value being returned is a Reference (such as
+ * an arg or local), resolve it now because it may
+ * cease to exist at the end of the method.
+ *
+ * Allow references created by the Index operator to return unchanged.
+ */
+ if ((ACPI_GET_DESCRIPTOR_TYPE (walk_state->results->results.obj_desc[0]) == ACPI_DESC_TYPE_OPERAND) &&
+ (ACPI_GET_OBJECT_TYPE (walk_state->results->results.obj_desc [0]) == ACPI_TYPE_LOCAL_REFERENCE) &&
+ ((walk_state->results->results.obj_desc [0])->reference.opcode != AML_INDEX_OP)) {
+ status = acpi_ex_resolve_to_value (&walk_state->results->results.obj_desc [0], walk_state);
+ if (ACPI_FAILURE (status)) {
+ return (status);
+ }
+ }
+
+ walk_state->return_desc = walk_state->results->results.obj_desc [0];
+ }
+ else {
+ /* No return operand */
+
+ if (walk_state->num_operands) {
+ acpi_ut_remove_reference (walk_state->operands [0]);
+ }
+
+ walk_state->operands [0] = NULL;
+ walk_state->num_operands = 0;
+ walk_state->return_desc = NULL;
+ }
+
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+ "Completed RETURN_OP State=%p, ret_val=%p\n",
+ walk_state, walk_state->return_desc));
+
+ /* End the control method execution right now */
+
+ status = AE_CTRL_TERMINATE;
+ break;
+
+
+ case AML_NOOP_OP:
+
+ /* Just do nothing! */
+ break;
+
+
+ case AML_BREAK_POINT_OP:
+
+ /* Call up to the OS service layer to handle this */
+
+ status = acpi_os_signal (ACPI_SIGNAL_BREAKPOINT, "Executed AML Breakpoint opcode");
+
+ /* If and when it returns, all done. */
+
+ break;
+
+
+ case AML_BREAK_OP:
+ case AML_CONTINUE_OP: /* ACPI 2.0 */
+
+
+ /* Pop and delete control states until we find a while */
+
+ while (walk_state->control_state &&
+ (walk_state->control_state->control.opcode != AML_WHILE_OP)) {
+ control_state = acpi_ut_pop_generic_state (&walk_state->control_state);
+ acpi_ut_delete_generic_state (control_state);
+ }
+
+ /* No while found? */
+
+ if (!walk_state->control_state) {
+ return (AE_AML_NO_WHILE);
+ }
+
+ /* Was: walk_state->aml_last_while = walk_state->control_state->Control.aml_predicate_start; */
+
+ walk_state->aml_last_while = walk_state->control_state->control.package_end;
+
+ /* Return status depending on opcode */
+
+ if (op->common.aml_opcode == AML_BREAK_OP) {
+ status = AE_CTRL_BREAK;
+ }
+ else {
+ status = AE_CTRL_CONTINUE;
+ }
+ break;
+
+
+ default:
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown control opcode=%X Op=%p\n",
+ op->common.aml_opcode, op));
+
+ status = AE_AML_BAD_OPCODE;
+ break;
+ }
+
+ return (status);
+}
+