0,0 → 1,579 |
/****************************************************************************** |
* |
* Module Name: dswload - Dispatcher first pass namespace load callbacks |
* |
*****************************************************************************/ |
|
/* |
* Copyright (C) 2000 - 2015, 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" |
|
#ifdef ACPI_ASL_COMPILER |
#include "acdisasm.h" |
#endif |
|
#define _COMPONENT ACPI_DISPATCHER |
ACPI_MODULE_NAME("dswload") |
|
/******************************************************************************* |
* |
* FUNCTION: acpi_ds_init_callbacks |
* |
* PARAMETERS: walk_state - Current state of the parse tree walk |
* pass_number - 1, 2, or 3 |
* |
* RETURN: Status |
* |
* DESCRIPTION: Init walk state callbacks |
* |
******************************************************************************/ |
acpi_status |
acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number) |
{ |
|
switch (pass_number) { |
case 0: |
|
/* Parse only - caller will setup callbacks */ |
|
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
ACPI_PARSE_DELETE_TREE | ACPI_PARSE_DISASSEMBLE; |
walk_state->descending_callback = NULL; |
walk_state->ascending_callback = NULL; |
break; |
|
case 1: |
|
/* Load pass 1 */ |
|
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
ACPI_PARSE_DELETE_TREE; |
walk_state->descending_callback = acpi_ds_load1_begin_op; |
walk_state->ascending_callback = acpi_ds_load1_end_op; |
break; |
|
case 2: |
|
/* Load pass 2 */ |
|
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
ACPI_PARSE_DELETE_TREE; |
walk_state->descending_callback = acpi_ds_load2_begin_op; |
walk_state->ascending_callback = acpi_ds_load2_end_op; |
break; |
|
case 3: |
|
/* Execution pass */ |
|
#ifndef ACPI_NO_METHOD_EXECUTION |
walk_state->parse_flags |= ACPI_PARSE_EXECUTE | |
ACPI_PARSE_DELETE_TREE; |
walk_state->descending_callback = acpi_ds_exec_begin_op; |
walk_state->ascending_callback = acpi_ds_exec_end_op; |
#endif |
break; |
|
default: |
|
return (AE_BAD_PARAMETER); |
} |
|
return (AE_OK); |
} |
|
/******************************************************************************* |
* |
* FUNCTION: acpi_ds_load1_begin_op |
* |
* PARAMETERS: walk_state - Current state of the parse tree walk |
* out_op - Where 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_load1_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 *path; |
u32 flags; |
|
ACPI_FUNCTION_TRACE(ds_load1_begin_op); |
|
op = walk_state->op; |
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
walk_state)); |
|
/* We are only interested in opcodes that have an associated name */ |
|
if (op) { |
if (!(walk_state->op_info->flags & AML_NAMED)) { |
*out_op = op; |
return_ACPI_STATUS(AE_OK); |
} |
|
/* Check if this object has already been installed in the namespace */ |
|
if (op->common.node) { |
*out_op = op; |
return_ACPI_STATUS(AE_OK); |
} |
} |
|
path = acpi_ps_get_next_namestring(&walk_state->parser_state); |
|
/* Map the raw opcode into an internal object type */ |
|
object_type = walk_state->op_info->object_type; |
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
"State=%p Op=%p [%s]\n", walk_state, op, |
acpi_ut_get_type_name(object_type))); |
|
switch (walk_state->opcode) { |
case AML_SCOPE_OP: |
/* |
* The target name of the Scope() operator must exist at this point so |
* that we can actually open the scope to enter new names underneath it. |
* Allow search-to-root for single namesegs. |
*/ |
status = |
acpi_ns_lookup(walk_state->scope_info, path, object_type, |
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
walk_state, &(node)); |
#ifdef ACPI_ASL_COMPILER |
if (status == AE_NOT_FOUND) { |
/* |
* Table disassembly: |
* Target of Scope() not found. Generate an External for it, and |
* insert the name into the namespace. |
*/ |
acpi_dm_add_op_to_external_list(op, path, |
ACPI_TYPE_DEVICE, 0, 0); |
status = |
acpi_ns_lookup(walk_state->scope_info, path, |
object_type, ACPI_IMODE_LOAD_PASS1, |
ACPI_NS_SEARCH_PARENT, walk_state, |
&node); |
} |
#endif |
if (ACPI_FAILURE(status)) { |
ACPI_ERROR_NAMESPACE(path, status); |
return_ACPI_STATUS(status); |
} |
|
/* |
* 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) { ... } |
* |
* Note: silently change the type here. On the second pass, |
* we will report a warning |
*/ |
ACPI_DEBUG_PRINT((ACPI_DB_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; |
|
case ACPI_TYPE_METHOD: |
/* |
* Allow scope change to root during execution of module-level |
* code. Root is typed METHOD during this time. |
*/ |
if ((node == acpi_gbl_root_node) && |
(walk_state-> |
parse_flags & ACPI_PARSE_MODULE_LEVEL)) { |
break; |
} |
|
/*lint -fallthrough */ |
|
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_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
} |
break; |
|
default: |
/* |
* For all other named opcodes, we will enter the name into |
* the namespace. |
* |
* Setup the search flags. |
* Since we are entering a name into the namespace, we do not want to |
* enable the search-to-root upsearch. |
* |
* There are only two conditions where it is acceptable that the name |
* already exists: |
* 1) the Scope() operator can reopen a scoping object that was |
* previously defined (Scope, Method, Device, etc.) |
* 2) Whenever we are parsing a deferred opcode (op_region, Buffer, |
* buffer_field, or Package), the name of the object is already |
* in the namespace. |
*/ |
if (walk_state->deferred_node) { |
|
/* This name is already in the namespace, get the node */ |
|
node = walk_state->deferred_node; |
status = AE_OK; |
break; |
} |
|
/* |
* If we are executing a method, do not create any namespace objects |
* during the load phase, only during execution. |
*/ |
if (walk_state->method_node) { |
node = NULL; |
status = AE_OK; |
break; |
} |
|
flags = ACPI_NS_NO_UPSEARCH; |
if ((walk_state->opcode != AML_SCOPE_OP) && |
(!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { |
if (walk_state->namespace_override) { |
flags |= ACPI_NS_OVERRIDE_IF_FOUND; |
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
"[%s] Override allowed\n", |
acpi_ut_get_type_name |
(object_type))); |
} else { |
flags |= ACPI_NS_ERROR_IF_FOUND; |
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
"[%s] Cannot already exist\n", |
acpi_ut_get_type_name |
(object_type))); |
} |
} else { |
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
"[%s] Both Find or Create allowed\n", |
acpi_ut_get_type_name(object_type))); |
} |
|
/* |
* 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. |
*/ |
status = |
acpi_ns_lookup(walk_state->scope_info, path, object_type, |
ACPI_IMODE_LOAD_PASS1, flags, walk_state, |
&node); |
if (ACPI_FAILURE(status)) { |
if (status == AE_ALREADY_EXISTS) { |
|
/* The name already exists in this scope */ |
|
if (node->flags & ANOBJ_IS_EXTERNAL) { |
/* |
* Allow one create on an object or segment that was |
* previously declared External |
*/ |
node->flags &= ~ANOBJ_IS_EXTERNAL; |
node->type = (u8) object_type; |
|
/* Just retyped a node, probably will need to open a scope */ |
|
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); |
} |
} |
|
status = AE_OK; |
} |
} |
|
if (ACPI_FAILURE(status)) { |
ACPI_ERROR_NAMESPACE(path, status); |
return_ACPI_STATUS(status); |
} |
} |
break; |
} |
|
/* Common exit */ |
|
if (!op) { |
|
/* Create a new op */ |
|
op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml); |
if (!op) { |
return_ACPI_STATUS(AE_NO_MEMORY); |
} |
} |
|
/* Initialize the op */ |
|
#if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) |
op->named.path = ACPI_CAST_PTR(u8, path); |
#endif |
|
if (node) { |
/* |
* 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; |
op->named.name = node->name.integer; |
} |
|
acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
op); |
*out_op = op; |
return_ACPI_STATUS(status); |
} |
|
/******************************************************************************* |
* |
* FUNCTION: acpi_ds_load1_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_load1_end_op(struct acpi_walk_state *walk_state) |
{ |
union acpi_parse_object *op; |
acpi_object_type object_type; |
acpi_status status = AE_OK; |
|
ACPI_FUNCTION_TRACE(ds_load1_end_op); |
|
op = walk_state->op; |
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
walk_state)); |
|
/* We are only interested in opcodes that have an associated name */ |
|
if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { |
return_ACPI_STATUS(AE_OK); |
} |
|
/* Get the object type to determine if we should pop the scope */ |
|
object_type = walk_state->op_info->object_type; |
|
#ifndef ACPI_NO_METHOD_EXECUTION |
if (walk_state->op_info->flags & AML_FIELD) { |
/* |
* If we are executing a method, do not create any namespace objects |
* during the load phase, only during execution. |
*/ |
if (!walk_state->method_node) { |
if (walk_state->opcode == AML_FIELD_OP || |
walk_state->opcode == AML_BANK_FIELD_OP || |
walk_state->opcode == AML_INDEX_FIELD_OP) { |
status = |
acpi_ds_init_field_objects(op, walk_state); |
} |
} |
return_ACPI_STATUS(status); |
} |
|
/* |
* If we are executing a method, do not create any namespace objects |
* during the load phase, only during execution. |
*/ |
if (!walk_state->method_node) { |
if (op->common.aml_opcode == AML_REGION_OP) { |
status = |
acpi_ex_create_region(op->named.data, |
op->named.length, |
(acpi_adr_space_type) ((op-> |
common. |
value. |
arg)-> |
common. |
value. |
integer), |
walk_state); |
if (ACPI_FAILURE(status)) { |
return_ACPI_STATUS(status); |
} |
} else if (op->common.aml_opcode == AML_DATA_REGION_OP) { |
status = |
acpi_ex_create_region(op->named.data, |
op->named.length, |
ACPI_ADR_SPACE_DATA_TABLE, |
walk_state); |
if (ACPI_FAILURE(status)) { |
return_ACPI_STATUS(status); |
} |
} |
} |
#endif |
|
if (op->common.aml_opcode == AML_NAME_OP) { |
|
/* For Name opcode, get the object type from the argument */ |
|
if (op->common.value.arg) { |
object_type = (acpi_ps_get_opcode_info((op->common. |
value.arg)-> |
common. |
aml_opcode))-> |
object_type; |
|
/* Set node type if we have a namespace node */ |
|
if (op->common.node) { |
op->common.node->type = (u8) object_type; |
} |
} |
} |
|
/* |
* If we are executing a method, do not create any namespace objects |
* during the load phase, only during execution. |
*/ |
if (!walk_state->method_node) { |
if (op->common.aml_opcode == 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); |
} |
} |
} |
} |
|
/* Pop the scope stack (only if loading a table) */ |
|
if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { |
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); |
} |
|
return_ACPI_STATUS(status); |
} |