1 files changed, 720 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c
new file mode 100644
index 00000000000..4be4e921dfe
--- /dev/null
+++ b/drivers/acpi/acpica/dswload2.c
@@ -0,0 +1,720 @@
+/******************************************************************************
+ *
+ * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2011, 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 "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acevents.h"
+
+#define _COMPONENT          ACPI_DISPATCHER
+ACPI_MODULE_NAME("dswload2")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_load2_begin_op
+ *
+ * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *              out_op          - Wher to return op if a new one is created
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Descending callback used during the loading of ACPI tables.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
+                       union acpi_parse_object **out_op)
+{
+        union acpi_parse_object *op;
+        struct acpi_namespace_node *node;
+        acpi_status status;
+        acpi_object_type object_type;
+        char *buffer_ptr;
+        u32 flags;
+
+        ACPI_FUNCTION_TRACE(ds_load2_begin_op);
+
+        op = walk_state->op;
+        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
+                          walk_state));
+
+        if (op) {
+                if ((walk_state->control_state) &&
+                    (walk_state->control_state->common.state ==
+                     ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
+
+                        /* We are executing a while loop outside of a method */
+
+                        status = acpi_ds_exec_begin_op(walk_state, out_op);
+                        return_ACPI_STATUS(status);
+                }
+
+                /* We only care about Namespace opcodes here */
+
+                if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
+                     (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
+                    (!(walk_state->op_info->flags & AML_NAMED))) {
+                        return_ACPI_STATUS(AE_OK);
+                }
+
+                /* Get the name we are going to enter or lookup in the namespace */
+
+                if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
+
+                        /* For Namepath op, get the path string */
+
+                        buffer_ptr = op->common.value.string;
+                        if (!buffer_ptr) {
+
+                                /* No name, just exit */
+
+                                return_ACPI_STATUS(AE_OK);
+                        }
+                } else {
+                        /* Get name from the op */
+
+                        buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
+                }
+        } else {
+                /* Get the namestring from the raw AML */
+
+                buffer_ptr =
+                    acpi_ps_get_next_namestring(&walk_state->parser_state);
+        }
+
+        /* Map the opcode into an internal object type */
+
+        object_type = walk_state->op_info->object_type;
+
+        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+                          "State=%p Op=%p Type=%X\n", walk_state, op,
+                          object_type));
+
+        switch (walk_state->opcode) {
+        case AML_FIELD_OP:
+        case AML_BANK_FIELD_OP:
+        case AML_INDEX_FIELD_OP:
+
+                node = NULL;
+                status = AE_OK;
+                break;
+
+        case AML_INT_NAMEPATH_OP:
+                /*
+                 * The name_path is an object reference to an existing object.
+                 * Don't enter the name into the namespace, but look it up
+                 * for use later.
+                 */
+                status =
+                    acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
+                                   object_type, ACPI_IMODE_EXECUTE,
+                                   ACPI_NS_SEARCH_PARENT, walk_state, &(node));
+                break;
+
+        case AML_SCOPE_OP:
+
+                /* Special case for Scope(\) -> refers to the Root node */
+
+                if (op && (op->named.node == acpi_gbl_root_node)) {
+                        node = op->named.node;
+
+                        status =
+                            acpi_ds_scope_stack_push(node, object_type,
+                                                     walk_state);
+                        if (ACPI_FAILURE(status)) {
+                                return_ACPI_STATUS(status);
+                        }
+                } else {
+                        /*
+                         * The Path is an object reference to an existing object.
+                         * Don't enter the name into the namespace, but look it up
+                         * for use later.
+                         */
+                        status =
+                            acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
+                                           object_type, ACPI_IMODE_EXECUTE,
+                                           ACPI_NS_SEARCH_PARENT, walk_state,
+                                           &(node));
+                        if (ACPI_FAILURE(status)) {
+#ifdef ACPI_ASL_COMPILER
+                                if (status == AE_NOT_FOUND) {
+                                        status = AE_OK;
+                                } else {
+                                        ACPI_ERROR_NAMESPACE(buffer_ptr,
+                                                             status);
+                                }
+#else
+                                ACPI_ERROR_NAMESPACE(buffer_ptr, status);
+#endif
+                                return_ACPI_STATUS(status);
+                        }
+                }
+
+                /*
+                 * We must check to make sure that the target is
+                 * one of the opcodes that actually opens a scope
+                 */
+                switch (node->type) {
+                case ACPI_TYPE_ANY:
+                case ACPI_TYPE_LOCAL_SCOPE:     /* Scope */
+                case ACPI_TYPE_DEVICE:
+                case ACPI_TYPE_POWER:
+                case ACPI_TYPE_PROCESSOR:
+                case ACPI_TYPE_THERMAL:
+
+                        /* These are acceptable types */
+                        break;
+
+                case ACPI_TYPE_INTEGER:
+                case ACPI_TYPE_STRING:
+                case ACPI_TYPE_BUFFER:
+
+                        /*
+                         * These types we will allow, but we will change the type.
+                         * This enables some existing code of the form:
+                         *
+                         *  Name (DEB, 0)
+                         *  Scope (DEB) { ... }
+                         */
+                        ACPI_WARNING((AE_INFO,
+                                      "Type override - [%4.4s] had invalid type (%s) "
+                                      "for Scope operator, changed to type ANY\n",
+                                      acpi_ut_get_node_name(node),
+                                      acpi_ut_get_type_name(node->type)));
+
+                        node->type = ACPI_TYPE_ANY;
+                        walk_state->scope_info->common.value = ACPI_TYPE_ANY;
+                        break;
+
+                default:
+
+                        /* All other types are an error */
+
+                        ACPI_ERROR((AE_INFO,
+                                    "Invalid type (%s) for target of "
+                                    "Scope operator [%4.4s] (Cannot override)",
+                                    acpi_ut_get_type_name(node->type),
+                                    acpi_ut_get_node_name(node)));
+
+                        return (AE_AML_OPERAND_TYPE);
+                }
+                break;
+
+        default:
+
+                /* All other opcodes */
+
+                if (op && op->common.node) {
+
+                        /* This op/node was previously entered into the namespace */
+
+                        node = op->common.node;
+
+                        if (acpi_ns_opens_scope(object_type)) {
+                                status =
+                                    acpi_ds_scope_stack_push(node, object_type,
+                                                             walk_state);
+                                if (ACPI_FAILURE(status)) {
+                                        return_ACPI_STATUS(status);
+                                }
+                        }
+
+                        return_ACPI_STATUS(AE_OK);
+                }
+
+                /*
+                 * Enter the named type into the internal namespace. We enter the name
+                 * as we go downward in the parse tree. Any necessary subobjects that
+                 * involve arguments to the opcode must be created as we go back up the
+                 * parse tree later.
+                 *
+                 * Note: Name may already exist if we are executing a deferred opcode.
+                 */
+                if (walk_state->deferred_node) {
+
+                        /* This name is already in the namespace, get the node */
+
+                        node = walk_state->deferred_node;
+                        status = AE_OK;
+                        break;
+                }
+
+                flags = ACPI_NS_NO_UPSEARCH;
+                if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
+
+                        /* Execution mode, node cannot already exist, node is temporary */
+
+                        flags |= ACPI_NS_ERROR_IF_FOUND;
+
+                        if (!
+                            (walk_state->
+                             parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
+                                flags |= ACPI_NS_TEMPORARY;
+                        }
+                }
+
+                /* Add new entry or lookup existing entry */
+
+                status =
+                    acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
+                                   object_type, ACPI_IMODE_LOAD_PASS2, flags,
+                                   walk_state, &node);
+
+                if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) {
+                        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+                                          "***New Node [%4.4s] %p is temporary\n",
+                                          acpi_ut_get_node_name(node), node));
+                }
+                break;
+        }
+
+        if (ACPI_FAILURE(status)) {
+                ACPI_ERROR_NAMESPACE(buffer_ptr, status);
+                return_ACPI_STATUS(status);
+        }
+
+        if (!op) {
+
+                /* Create a new op */
+
+                op = acpi_ps_alloc_op(walk_state->opcode);
+                if (!op) {
+                        return_ACPI_STATUS(AE_NO_MEMORY);
+                }
+
+                /* Initialize the new op */
+
+                if (node) {
+                        op->named.name = node->name.integer;
+                }
+                *out_op = op;
+        }
+
+        /*
+         * Put the Node in the "op" object that the parser uses, so we
+         * can get it again quickly when this scope is closed
+         */
+        op->common.node = node;
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_load2_end_op
+ *
+ * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Ascending callback used during the loading of the namespace,
+ *              both control methods and everything else.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
+{
+        union acpi_parse_object *op;
+        acpi_status status = AE_OK;
+        acpi_object_type object_type;
+        struct acpi_namespace_node *node;
+        union acpi_parse_object *arg;
+        struct acpi_namespace_node *new_node;
+#ifndef ACPI_NO_METHOD_EXECUTION
+        u32 i;
+        u8 region_space;
+#endif
+
+        ACPI_FUNCTION_TRACE(ds_load2_end_op);
+
+        op = walk_state->op;
+        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
+                          walk_state->op_info->name, op, walk_state));
+
+        /* Check if opcode had an associated namespace object */
+
+        if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
+                return_ACPI_STATUS(AE_OK);
+        }
+
+        if (op->common.aml_opcode == AML_SCOPE_OP) {
+                ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+                                  "Ending scope Op=%p State=%p\n", op,
+                                  walk_state));
+        }
+
+        object_type = walk_state->op_info->object_type;
+
+        /*
+         * Get the Node/name from the earlier lookup
+         * (It was saved in the *op structure)
+         */
+        node = op->common.node;
+
+        /*
+         * Put the Node on the object stack (Contains the ACPI Name of
+         * this object)
+         */
+        walk_state->operands[0] = (void *)node;
+        walk_state->num_operands = 1;
+
+        /* Pop the scope stack */
+
+        if (acpi_ns_opens_scope(object_type) &&
+            (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
+                ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+                                  "(%s) Popping scope for Op %p\n",
+                                  acpi_ut_get_type_name(object_type), op));
+
+                status = acpi_ds_scope_stack_pop(walk_state);
+                if (ACPI_FAILURE(status)) {
+                        goto cleanup;
+                }
+        }
+
+        /*
+         * Named operations are as follows:
+         *
+         * AML_ALIAS
+         * AML_BANKFIELD
+         * AML_CREATEBITFIELD
+         * AML_CREATEBYTEFIELD
+         * AML_CREATEDWORDFIELD
+         * AML_CREATEFIELD
+         * AML_CREATEQWORDFIELD
+         * AML_CREATEWORDFIELD
+         * AML_DATA_REGION
+         * AML_DEVICE
+         * AML_EVENT
+         * AML_FIELD
+         * AML_INDEXFIELD
+         * AML_METHOD
+         * AML_METHODCALL
+         * AML_MUTEX
+         * AML_NAME
+         * AML_NAMEDFIELD
+         * AML_OPREGION
+         * AML_POWERRES
+         * AML_PROCESSOR
+         * AML_SCOPE
+         * AML_THERMALZONE
+         */
+
+        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+                          "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
+                          acpi_ps_get_opcode_name(op->common.aml_opcode),
+                          walk_state, op, node));
+
+        /* Decode the opcode */
+
+        arg = op->common.value.arg;
+
+        switch (walk_state->op_info->type) {
+#ifndef ACPI_NO_METHOD_EXECUTION
+
+        case AML_TYPE_CREATE_FIELD:
+                /*
+                 * Create the field object, but the field buffer and index must
+                 * be evaluated later during the execution phase
+                 */
+                status = acpi_ds_create_buffer_field(op, walk_state);
+                break;
+
+        case AML_TYPE_NAMED_FIELD:
+                /*
+                 * If we are executing a method, initialize the field
+                 */
+                if (walk_state->method_node) {
+                        status = acpi_ds_init_field_objects(op, walk_state);
+                }
+
+                switch (op->common.aml_opcode) {
+                case AML_INDEX_FIELD_OP:
+
+                        status =
+                            acpi_ds_create_index_field(op,
+                                                       (acpi_handle) arg->
+                                                       common.node, walk_state);
+                        break;
+
+                case AML_BANK_FIELD_OP:
+
+                        status =
+                            acpi_ds_create_bank_field(op, arg->common.node,
+                                                      walk_state);
+                        break;
+
+                case AML_FIELD_OP:
+
+                        status =
+                            acpi_ds_create_field(op, arg->common.node,
+                                                 walk_state);
+                        break;
+
+                default:
+                        /* All NAMED_FIELD opcodes must be handled above */
+                        break;
+                }
+                break;
+
+        case AML_TYPE_NAMED_SIMPLE:
+
+                status = acpi_ds_create_operands(walk_state, arg);
+                if (ACPI_FAILURE(status)) {
+                        goto cleanup;
+                }
+
+                switch (op->common.aml_opcode) {
+                case AML_PROCESSOR_OP:
+
+                        status = acpi_ex_create_processor(walk_state);
+                        break;
+
+                case AML_POWER_RES_OP:
+
+                        status = acpi_ex_create_power_resource(walk_state);
+                        break;
+
+                case AML_MUTEX_OP:
+
+                        status = acpi_ex_create_mutex(walk_state);
+                        break;
+
+                case AML_EVENT_OP:
+
+                        status = acpi_ex_create_event(walk_state);
+                        break;
+
+                case AML_ALIAS_OP:
+
+                        status = acpi_ex_create_alias(walk_state);
+                        break;
+
+                default:
+                        /* Unknown opcode */
+
+                        status = AE_OK;
+                        goto cleanup;
+                }
+
+                /* Delete operands */
+
+                for (i = 1; i < walk_state->num_operands; i++) {
+                        acpi_ut_remove_reference(walk_state->operands[i]);
+                        walk_state->operands[i] = NULL;
+                }
+
+                break;
+#endif                          /* ACPI_NO_METHOD_EXECUTION */
+
+        case AML_TYPE_NAMED_COMPLEX:
+
+                switch (op->common.aml_opcode) {
+#ifndef ACPI_NO_METHOD_EXECUTION
+                case AML_REGION_OP:
+                case AML_DATA_REGION_OP:
+
+                        if (op->common.aml_opcode == AML_REGION_OP) {
+                                region_space = (acpi_adr_space_type)
+                                    ((op->common.value.arg)->common.value.
+                                     integer);
+                        } else {
+                                region_space = REGION_DATA_TABLE;
+                        }
+
+                        /*
+                         * The op_region is not fully parsed at this time. The only valid
+                         * argument is the space_id. (We must save the address of the
+                         * AML of the address and length operands)
+                         *
+                         * If we have a valid region, initialize it. The namespace is
+                         * unlocked at this point.
+                         *
+                         * Need to unlock interpreter if it is locked (if we are running
+                         * a control method), in order to allow _REG methods to be run
+                         * during acpi_ev_initialize_region.
+                         */
+                        if (walk_state->method_node) {
+                                /*
+                                 * Executing a method: initialize the region and unlock
+                                 * the interpreter
+                                 */
+                                status =
+                                    acpi_ex_create_region(op->named.data,
+                                                          op->named.length,
+                                                          region_space,
+                                                          walk_state);
+                                if (ACPI_FAILURE(status)) {
+                                        return (status);
+                                }
+
+                                acpi_ex_exit_interpreter();
+                        }
+
+                        status =
+                            acpi_ev_initialize_region
+                            (acpi_ns_get_attached_object(node), FALSE);
+                        if (walk_state->method_node) {
+                                acpi_ex_enter_interpreter();
+                        }
+
+                        if (ACPI_FAILURE(status)) {
+                                /*
+                                 *  If AE_NOT_EXIST is returned, it is not fatal
+                                 *  because many regions get created before a handler
+                                 *  is installed for said region.
+                                 */
+                                if (AE_NOT_EXIST == status) {
+                                        status = AE_OK;
+                                }
+                        }
+                        break;
+
+                case AML_NAME_OP:
+
+                        status = acpi_ds_create_node(walk_state, node, op);
+                        break;
+
+                case AML_METHOD_OP:
+                        /*
+                         * method_op pkg_length name_string method_flags term_list
+                         *
+                         * Note: We must create the method node/object pair as soon as we
+                         * see the method declaration. This allows later pass1 parsing
+                         * of invocations of the method (need to know the number of
+                         * arguments.)
+                         */
+                        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+                                          "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
+                                          walk_state, op, op->named.node));
+
+                        if (!acpi_ns_get_attached_object(op->named.node)) {
+                                walk_state->operands[0] =
+                                    ACPI_CAST_PTR(void, op->named.node);
+                                walk_state->num_operands = 1;
+
+                                status =
+                                    acpi_ds_create_operands(walk_state,
+                                                            op->common.value.
+                                                            arg);
+                                if (ACPI_SUCCESS(status)) {
+                                        status =
+                                            acpi_ex_create_method(op->named.
+                                                                  data,
+                                                                  op->named.
+                                                                  length,
+                                                                  walk_state);
+                                }
+                                walk_state->operands[0] = NULL;
+                                walk_state->num_operands = 0;
+
+                                if (ACPI_FAILURE(status)) {
+                                        return_ACPI_STATUS(status);
+                                }
+                        }
+                        break;
+
+#endif                          /* ACPI_NO_METHOD_EXECUTION */
+
+                default:
+                        /* All NAMED_COMPLEX opcodes must be handled above */
+                        break;
+                }
+                break;
+
+        case AML_CLASS_INTERNAL:
+
+                /* case AML_INT_NAMEPATH_OP: */
+                break;
+
+        case AML_CLASS_METHOD_CALL:
+
+                ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+                                  "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
+                                  walk_state, op, node));
+
+                /*
+                 * Lookup the method name and save the Node
+                 */
+                status =
+                    acpi_ns_lookup(walk_state->scope_info,
+                                   arg->common.value.string, ACPI_TYPE_ANY,
+                                   ACPI_IMODE_LOAD_PASS2,
+                                   ACPI_NS_SEARCH_PARENT |
+                                   ACPI_NS_DONT_OPEN_SCOPE, walk_state,
+                                   &(new_node));
+                if (ACPI_SUCCESS(status)) {
+                        /*
+                         * Make sure that what we found is indeed a method
+                         * We didn't search for a method on purpose, to see if the name
+                         * would resolve
+                         */
+                        if (new_node->type != ACPI_TYPE_METHOD) {
+                                status = AE_AML_OPERAND_TYPE;
+                        }
+
+                        /* We could put the returned object (Node) on the object stack for
+                         * later, but for now, we will put it in the "op" object that the
+                         * parser uses, so we can get it again at the end of this scope
+                         */
+                        op->common.node = new_node;
+                } else {
+                        ACPI_ERROR_NAMESPACE(arg->common.value.string, status);
+                }
+                break;
+
+        default:
+                break;
+        }
+
+      cleanup:
+
+        /* Remove the Node pushed at the very beginning */
+
+        walk_state->operands[0] = NULL;
+        walk_state->num_operands = 0;
+        return_ACPI_STATUS(status);
+}