dsmthdat.o \
dsobject.o \
dsopcode.o \
+ dspkginit.o \
dsutils.o \
dswexec.o \
dswload.o \
* dsobject - Parser/Interpreter interface - object initialization and conversion
*/
acpi_status
+acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op,
+ union acpi_operand_object **obj_desc_ptr);
+
+acpi_status
acpi_ds_build_internal_buffer_obj(struct acpi_walk_state *walk_state,
union acpi_parse_object *op,
u32 buffer_length,
struct acpi_namespace_node *node,
union acpi_parse_object *op);
+/*
+ * dspkginit - Package object initialization
+ */
+acpi_status
+acpi_ds_init_package_element(u8 object_type,
+ union acpi_operand_object *source_object,
+ union acpi_generic_state *state, void *context);
+
/*
* dsutils - Parser/Interpreter interface utility routines
*/
* Pkg state - used to traverse nested package structures
*/
struct acpi_pkg_state {
- ACPI_STATE_COMMON u16 index;
+ ACPI_STATE_COMMON u32 index;
union acpi_operand_object *source_object;
union acpi_operand_object *dest_object;
struct acpi_walk_state *walk_state;
struct acpi_object_reference {
ACPI_OBJECT_COMMON_HEADER u8 class; /* Reference Class */
u8 target_type; /* Used for Index Op */
- u8 reserved;
+ u8 resolved; /* Reference has been resolved to a value */
void *object; /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */
struct acpi_namespace_node *node; /* ref_of or Namepath */
union acpi_operand_object **where; /* Target of Index */
u8 *index_pointer; /* Used for Buffers and Strings */
+ u8 *aml; /* Used for deferred resolution of the ref */
u32 value; /* Used for Local/Arg/Index/ddb_handle */
};
union acpi_generic_state *acpi_ut_create_pkg_state(void *internal_object,
void *external_object,
- u16 index);
+ u32 index);
acpi_status
acpi_ut_create_update_state_and_push(union acpi_operand_object *object,
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsobject")
-/* Local prototypes */
-static acpi_status
-acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
- union acpi_parse_object *op,
- union acpi_operand_object **obj_desc_ptr);
-
#ifndef ACPI_NO_METHOD_EXECUTION
/*******************************************************************************
*
* Simple objects are any objects other than a package object!
*
******************************************************************************/
-
-static acpi_status
+acpi_status
acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
union acpi_parse_object *op,
union acpi_operand_object **obj_desc_ptr)
{
union acpi_operand_object *obj_desc;
acpi_status status;
- acpi_object_type type;
ACPI_FUNCTION_TRACE(ds_build_internal_object);
if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
/*
* This is a named object reference. If this name was
- * previously looked up in the namespace, it was stored in this op.
- * Otherwise, go ahead and look it up now
+ * previously looked up in the namespace, it was stored in
+ * this op. Otherwise, go ahead and look it up now
*/
if (!op->common.node) {
- status = acpi_ns_lookup(walk_state->scope_info,
- op->common.value.string,
- ACPI_TYPE_ANY,
- ACPI_IMODE_EXECUTE,
- ACPI_NS_SEARCH_PARENT |
- ACPI_NS_DONT_OPEN_SCOPE, NULL,
- ACPI_CAST_INDIRECT_PTR(struct
- acpi_namespace_node,
- &(op->
- common.
- node)));
- if (ACPI_FAILURE(status)) {
-
- /* Check if we are resolving a named reference within a package */
-
- if ((status == AE_NOT_FOUND)
- && (acpi_gbl_enable_interpreter_slack)
- &&
- ((op->common.parent->common.aml_opcode ==
- AML_PACKAGE_OP)
- || (op->common.parent->common.aml_opcode ==
- AML_VARIABLE_PACKAGE_OP))) {
- /*
- * We didn't find the target and we are populating elements
- * of a package - ignore if slack enabled. Some ASL code
- * contains dangling invalid references in packages and
- * expects that no exception will be issued. Leave the
- * element as a null element. It cannot be used, but it
- * can be overwritten by subsequent ASL code - this is
- * typically the case.
- */
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Ignoring unresolved reference in package [%4.4s]\n",
- walk_state->
- scope_info->scope.
- node->name.ascii));
-
- return_ACPI_STATUS(AE_OK);
- } else {
- ACPI_ERROR_NAMESPACE(op->common.value.
- string, status);
- }
-
- return_ACPI_STATUS(status);
- }
- }
-
- /* Special object resolution for elements of a package */
-
- if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) ||
- (op->common.parent->common.aml_opcode ==
- AML_VARIABLE_PACKAGE_OP)) {
- /*
- * Attempt to resolve the node to a value before we insert it into
- * the package. If this is a reference to a common data type,
- * resolve it immediately. According to the ACPI spec, package
- * elements can only be "data objects" or method references.
- * Attempt to resolve to an Integer, Buffer, String or Package.
- * If cannot, return the named reference (for things like Devices,
- * Methods, etc.) Buffer Fields and Fields will resolve to simple
- * objects (int/buf/str/pkg).
- *
- * NOTE: References to things like Devices, Methods, Mutexes, etc.
- * will remain as named references. This behavior is not described
- * in the ACPI spec, but it appears to be an oversight.
- */
- obj_desc =
- ACPI_CAST_PTR(union acpi_operand_object,
- op->common.node);
-
- status =
- acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
- (struct
- acpi_namespace_node,
- &obj_desc),
- walk_state);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /*
- * Special handling for Alias objects. We need to setup the type
- * and the Op->Common.Node to point to the Alias target. Note,
- * Alias has at most one level of indirection internally.
- */
- type = op->common.node->type;
- if (type == ACPI_TYPE_LOCAL_ALIAS) {
- type = obj_desc->common.type;
- op->common.node =
- ACPI_CAST_PTR(struct acpi_namespace_node,
- op->common.node->object);
- }
-
- switch (type) {
- /*
- * For these types, we need the actual node, not the subobject.
- * However, the subobject did not get an extra reference count above.
- *
- * TBD: should ex_resolve_node_to_value be changed to fix this?
- */
- case ACPI_TYPE_DEVICE:
- case ACPI_TYPE_THERMAL:
-
- acpi_ut_add_reference(op->common.node->object);
- /*lint -fallthrough */
- /*
- * For these types, we need the actual node, not the subobject.
- * The subobject got an extra reference count in ex_resolve_node_to_value.
- */
- case ACPI_TYPE_MUTEX:
- case ACPI_TYPE_METHOD:
- case ACPI_TYPE_POWER:
- case ACPI_TYPE_PROCESSOR:
- case ACPI_TYPE_EVENT:
- case ACPI_TYPE_REGION:
-
- /* We will create a reference object for these types below */
- break;
+ /* Check if we are resolving a named reference within a package */
- default:
+ if ((op->common.parent->common.aml_opcode ==
+ AML_PACKAGE_OP)
+ || (op->common.parent->common.aml_opcode ==
+ AML_VARIABLE_PACKAGE_OP)) {
/*
- * All other types - the node was resolved to an actual
- * object, we are done.
+ * We won't resolve package elements here, we will do this
+ * after all ACPI tables are loaded into the namespace. This
+ * behavior supports both forward references to named objects
+ * and external references to objects in other tables.
*/
- goto exit;
+ goto create_new_object;
+ } else {
+ status = acpi_ns_lookup(walk_state->scope_info,
+ op->common.value.string,
+ ACPI_TYPE_ANY,
+ ACPI_IMODE_EXECUTE,
+ ACPI_NS_SEARCH_PARENT |
+ ACPI_NS_DONT_OPEN_SCOPE,
+ NULL,
+ ACPI_CAST_INDIRECT_PTR
+ (struct
+ acpi_namespace_node,
+ &(op->common.node)));
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR_NAMESPACE(op->common.value.
+ string, status);
+ return_ACPI_STATUS(status);
+ }
}
}
}
+create_new_object:
+
/* Create and init a new internal ACPI object */
obj_desc = acpi_ut_create_internal_object((acpi_ps_get_opcode_info
return_ACPI_STATUS(status);
}
-exit:
+ /*
+ * Handling for unresolved package reference elements.
+ * These are elements that are namepaths.
+ */
+ if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) ||
+ (op->common.parent->common.aml_opcode == AML_VARIABLE_PACKAGE_OP)) {
+ obj_desc->reference.resolved = TRUE;
+
+ if ((op->common.aml_opcode == AML_INT_NAMEPATH_OP) &&
+ !obj_desc->reference.node) {
+ /*
+ * Name was unresolved above.
+ * Get the prefix node for later lookup
+ */
+ obj_desc->reference.node =
+ walk_state->scope_info->scope.node;
+ obj_desc->reference.aml = op->common.aml;
+ obj_desc->reference.resolved = FALSE;
+ }
+ }
+
*obj_desc_ptr = obj_desc;
return_ACPI_STATUS(status);
}
return_ACPI_STATUS(AE_OK);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_ds_build_internal_package_obj
- *
- * PARAMETERS: walk_state - Current walk state
- * op - Parser object to be translated
- * element_count - Number of elements in the package - this is
- * the num_elements argument to Package()
- * obj_desc_ptr - Where the ACPI internal object is returned
- *
- * RETURN: Status
- *
- * DESCRIPTION: Translate a parser Op package object to the equivalent
- * namespace object
- *
- * NOTE: The number of elements in the package will be always be the num_elements
- * count, regardless of the number of elements in the package list. If
- * num_elements is smaller, only that many package list elements are used.
- * if num_elements is larger, the Package object is padded out with
- * objects of type Uninitialized (as per ACPI spec.)
- *
- * Even though the ASL compilers do not allow num_elements to be smaller
- * than the Package list length (for the fixed length package opcode), some
- * BIOS code modifies the AML on the fly to adjust the num_elements, and
- * this code compensates for that. This also provides compatibility with
- * other AML interpreters.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
- union acpi_parse_object *op,
- u32 element_count,
- union acpi_operand_object **obj_desc_ptr)
-{
- union acpi_parse_object *arg;
- union acpi_parse_object *parent;
- union acpi_operand_object *obj_desc = NULL;
- acpi_status status = AE_OK;
- u32 i;
- u16 index;
- u16 reference_count;
-
- ACPI_FUNCTION_TRACE(ds_build_internal_package_obj);
-
- /* Find the parent of a possibly nested package */
-
- parent = op->common.parent;
- while ((parent->common.aml_opcode == AML_PACKAGE_OP) ||
- (parent->common.aml_opcode == AML_VARIABLE_PACKAGE_OP)) {
- parent = parent->common.parent;
- }
-
- /*
- * If we are evaluating a Named package object "Name (xxxx, Package)",
- * the package object already exists, otherwise it must be created.
- */
- obj_desc = *obj_desc_ptr;
- if (!obj_desc) {
- obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE);
- *obj_desc_ptr = obj_desc;
- if (!obj_desc) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- obj_desc->package.node = parent->common.node;
- }
-
- /*
- * Allocate the element array (array of pointers to the individual
- * objects) based on the num_elements parameter. Add an extra pointer slot
- * so that the list is always null terminated.
- */
- obj_desc->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size)
- element_count +
- 1) * sizeof(void *));
-
- if (!obj_desc->package.elements) {
- acpi_ut_delete_object_desc(obj_desc);
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- obj_desc->package.count = element_count;
-
- /*
- * Initialize the elements of the package, up to the num_elements count.
- * Package is automatically padded with uninitialized (NULL) elements
- * if num_elements is greater than the package list length. Likewise,
- * Package is truncated if num_elements is less than the list length.
- */
- arg = op->common.value.arg;
- arg = arg->common.next;
- for (i = 0; arg && (i < element_count); i++) {
- if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
- if (arg->common.node->type == ACPI_TYPE_METHOD) {
- /*
- * A method reference "looks" to the parser to be a method
- * invocation, so we special case it here
- */
- arg->common.aml_opcode = AML_INT_NAMEPATH_OP;
- status =
- acpi_ds_build_internal_object(walk_state,
- arg,
- &obj_desc->
- package.
- elements[i]);
- } else {
- /* This package element is already built, just get it */
-
- obj_desc->package.elements[i] =
- ACPI_CAST_PTR(union acpi_operand_object,
- arg->common.node);
- }
- } else {
- status =
- acpi_ds_build_internal_object(walk_state, arg,
- &obj_desc->package.
- elements[i]);
- }
-
- if (*obj_desc_ptr) {
-
- /* Existing package, get existing reference count */
-
- reference_count =
- (*obj_desc_ptr)->common.reference_count;
- if (reference_count > 1) {
-
- /* Make new element ref count match original ref count */
-
- for (index = 0; index < (reference_count - 1);
- index++) {
- acpi_ut_add_reference((obj_desc->
- package.
- elements[i]));
- }
- }
- }
-
- arg = arg->common.next;
- }
-
- /* Check for match between num_elements and actual length of package_list */
-
- if (arg) {
- /*
- * num_elements was exhausted, but there are remaining elements in the
- * package_list. Truncate the package to num_elements.
- *
- * Note: technically, this is an error, from ACPI spec: "It is an error
- * for NumElements to be less than the number of elements in the
- * PackageList". However, we just print a message and
- * no exception is returned. This provides Windows compatibility. Some
- * BIOSs will alter the num_elements on the fly, creating this type
- * of ill-formed package object.
- */
- while (arg) {
- /*
- * We must delete any package elements that were created earlier
- * and are not going to be used because of the package truncation.
- */
- if (arg->common.node) {
- acpi_ut_remove_reference(ACPI_CAST_PTR
- (union
- acpi_operand_object,
- arg->common.node));
- arg->common.node = NULL;
- }
-
- /* Find out how many elements there really are */
-
- i++;
- arg = arg->common.next;
- }
-
- ACPI_INFO(("Actual Package length (%u) is larger than "
- "NumElements field (%u), truncated",
- i, element_count));
- } else if (i < element_count) {
- /*
- * Arg list (elements) was exhausted, but we did not reach num_elements count.
- * Note: this is not an error, the package is padded out with NULLs.
- */
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Package List length (%u) smaller than NumElements "
- "count (%u), padded with null elements\n",
- i, element_count));
- }
-
- obj_desc->package.flags |= AOPOBJ_DATA_VALID;
- op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
- return_ACPI_STATUS(status);
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_node
case ACPI_TYPE_PACKAGE:
/*
- * Defer evaluation of Package term_arg operand
+ * Defer evaluation of Package term_arg operand and all
+ * package elements. (01/2017): We defer the element
+ * resolution to allow forward references from the package
+ * in order to provide compatibility with other ACPI
+ * implementations.
*/
obj_desc->package.node =
ACPI_CAST_PTR(struct acpi_namespace_node,
walk_state->operands[0]);
+
+ if (!op->named.data) {
+ return_ACPI_STATUS(AE_OK);
+ }
+
obj_desc->package.aml_start = op->named.data;
obj_desc->package.aml_length = op->named.length;
break;
/* Node was saved in Op */
obj_desc->reference.node = op->common.node;
- obj_desc->reference.object =
- op->common.node->object;
obj_desc->reference.class = ACPI_REFCLASS_NAME;
+ if (op->common.node) {
+ obj_desc->reference.object =
+ op->common.node->object;
+ }
break;
case AML_DEBUG_OP:
*/
walk_state->operand_index = walk_state->num_operands;
+ /* Ignore if child is not valid */
+
+ if (!op->common.value.arg) {
+ ACPI_ERROR((AE_INFO,
+ "Dispatch: Missing child while executing TermArg for %X",
+ op->common.aml_opcode));
+ return_ACPI_STATUS(AE_OK);
+ }
+
status = acpi_ds_create_operand(walk_state, op->common.value.arg, 1);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: dspkginit - Completion of deferred package initialization
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2017, 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 "acnamesp.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+
+#define _COMPONENT ACPI_NAMESPACE
+ACPI_MODULE_NAME("dspkginit")
+
+/* Local prototypes */
+static void
+acpi_ds_resolve_package_element(union acpi_operand_object **element);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_build_internal_package_obj
+ *
+ * PARAMETERS: walk_state - Current walk state
+ * op - Parser object to be translated
+ * element_count - Number of elements in the package - this is
+ * the num_elements argument to Package()
+ * obj_desc_ptr - Where the ACPI internal object is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Translate a parser Op package object to the equivalent
+ * namespace object
+ *
+ * NOTE: The number of elements in the package will be always be the num_elements
+ * count, regardless of the number of elements in the package list. If
+ * num_elements is smaller, only that many package list elements are used.
+ * if num_elements is larger, the Package object is padded out with
+ * objects of type Uninitialized (as per ACPI spec.)
+ *
+ * Even though the ASL compilers do not allow num_elements to be smaller
+ * than the Package list length (for the fixed length package opcode), some
+ * BIOS code modifies the AML on the fly to adjust the num_elements, and
+ * this code compensates for that. This also provides compatibility with
+ * other AML interpreters.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op,
+ u32 element_count,
+ union acpi_operand_object **obj_desc_ptr)
+{
+ union acpi_parse_object *arg;
+ union acpi_parse_object *parent;
+ union acpi_operand_object *obj_desc = NULL;
+ acpi_status status = AE_OK;
+ u16 reference_count;
+ u32 index;
+ u32 i;
+
+ ACPI_FUNCTION_TRACE(ds_build_internal_package_obj);
+
+ /* Find the parent of a possibly nested package */
+
+ parent = op->common.parent;
+ while ((parent->common.aml_opcode == AML_PACKAGE_OP) ||
+ (parent->common.aml_opcode == AML_VARIABLE_PACKAGE_OP)) {
+ parent = parent->common.parent;
+ }
+
+ /*
+ * If we are evaluating a Named package object of the form:
+ * Name (xxxx, Package)
+ * the package object already exists, otherwise it must be created.
+ */
+ obj_desc = *obj_desc_ptr;
+ if (!obj_desc) {
+ obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE);
+ *obj_desc_ptr = obj_desc;
+ if (!obj_desc) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+
+ obj_desc->package.node = parent->common.node;
+ }
+
+ if (obj_desc->package.flags & AOPOBJ_DATA_VALID) { /* Just in case */
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /*
+ * Allocate the element array (array of pointers to the individual
+ * objects) based on the num_elements parameter. Add an extra pointer slot
+ * so that the list is always null terminated.
+ */
+ obj_desc->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size)
+ element_count +
+ 1) * sizeof(void *));
+
+ if (!obj_desc->package.elements) {
+ acpi_ut_delete_object_desc(obj_desc);
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+
+ obj_desc->package.count = element_count;
+ arg = op->common.value.arg;
+ arg = arg->common.next;
+
+ if (arg) {
+ obj_desc->package.flags |= AOPOBJ_DATA_VALID;
+ }
+
+ /*
+ * Initialize the elements of the package, up to the num_elements count.
+ * Package is automatically padded with uninitialized (NULL) elements
+ * if num_elements is greater than the package list length. Likewise,
+ * Package is truncated if num_elements is less than the list length.
+ */
+ for (i = 0; arg && (i < element_count); i++) {
+ if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
+ if (arg->common.node->type == ACPI_TYPE_METHOD) {
+ /*
+ * A method reference "looks" to the parser to be a method
+ * invocation, so we special case it here
+ */
+ arg->common.aml_opcode = AML_INT_NAMEPATH_OP;
+ status =
+ acpi_ds_build_internal_object(walk_state,
+ arg,
+ &obj_desc->
+ package.
+ elements[i]);
+ } else {
+ /* This package element is already built, just get it */
+
+ obj_desc->package.elements[i] =
+ ACPI_CAST_PTR(union acpi_operand_object,
+ arg->common.node);
+ }
+ } else {
+ status =
+ acpi_ds_build_internal_object(walk_state, arg,
+ &obj_desc->package.
+ elements[i]);
+ if (status == AE_NOT_FOUND) {
+ ACPI_ERROR((AE_INFO, "%-48s",
+ "****DS namepath not found"));
+ }
+
+ /*
+ * Initialize this package element. This function handles the
+ * resolution of named references within the package.
+ */
+ acpi_ds_init_package_element(0,
+ obj_desc->package.
+ elements[i], NULL,
+ &obj_desc->package.
+ elements[i]);
+ }
+
+ if (*obj_desc_ptr) {
+
+ /* Existing package, get existing reference count */
+
+ reference_count =
+ (*obj_desc_ptr)->common.reference_count;
+ if (reference_count > 1) {
+
+ /* Make new element ref count match original ref count */
+ /* TBD: Probably need an acpi_ut_add_references function */
+
+ for (index = 0;
+ index < ((u32)reference_count - 1);
+ index++) {
+ acpi_ut_add_reference((obj_desc->
+ package.
+ elements[i]));
+ }
+ }
+ }
+
+ arg = arg->common.next;
+ }
+
+ /* Check for match between num_elements and actual length of package_list */
+
+ if (arg) {
+ /*
+ * num_elements was exhausted, but there are remaining elements in
+ * the package_list. Truncate the package to num_elements.
+ *
+ * Note: technically, this is an error, from ACPI spec: "It is an
+ * error for NumElements to be less than the number of elements in
+ * the PackageList". However, we just print a message and no
+ * exception is returned. This provides compatibility with other
+ * ACPI implementations. Some firmware implementations will alter
+ * the num_elements on the fly, possibly creating this type of
+ * ill-formed package object.
+ */
+ while (arg) {
+ /*
+ * We must delete any package elements that were created earlier
+ * and are not going to be used because of the package truncation.
+ */
+ if (arg->common.node) {
+ acpi_ut_remove_reference(ACPI_CAST_PTR
+ (union
+ acpi_operand_object,
+ arg->common.node));
+ arg->common.node = NULL;
+ }
+
+ /* Find out how many elements there really are */
+
+ i++;
+ arg = arg->common.next;
+ }
+
+ ACPI_INFO(("Actual Package length (%u) is larger than "
+ "NumElements field (%u), truncated",
+ i, element_count));
+ } else if (i < element_count) {
+ /*
+ * Arg list (elements) was exhausted, but we did not reach
+ * num_elements count.
+ *
+ * Note: this is not an error, the package is padded out
+ * with NULLs.
+ */
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Package List length (%u) smaller than NumElements "
+ "count (%u), padded with null elements\n",
+ i, element_count));
+ }
+
+ obj_desc->package.flags |= AOPOBJ_DATA_VALID;
+ op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_init_package_element
+ *
+ * PARAMETERS: acpi_pkg_callback
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Resolve a named reference element within a package object
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_init_package_element(u8 object_type,
+ union acpi_operand_object *source_object,
+ union acpi_generic_state *state, void *context)
+{
+ union acpi_operand_object **element_ptr;
+
+ if (!source_object) {
+ return (AE_OK);
+ }
+
+ /*
+ * The following code is a bit of a hack to workaround a (current)
+ * limitation of the acpi_pkg_callback interface. We need a pointer
+ * to the location within the element array because a new object
+ * may be created and stored there.
+ */
+ if (context) {
+
+ /* A direct call was made to this function */
+
+ element_ptr = (union acpi_operand_object **)context;
+ } else {
+ /* Call came from acpi_ut_walk_package_tree */
+
+ element_ptr = state->pkg.this_target_obj;
+ }
+
+ /* We are only interested in reference objects/elements */
+
+ if (source_object->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
+
+ /* Attempt to resolve the (named) reference to a namespace node */
+
+ acpi_ds_resolve_package_element(element_ptr);
+ } else if (source_object->common.type == ACPI_TYPE_PACKAGE) {
+ source_object->package.flags |= AOPOBJ_DATA_VALID;
+ }
+
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_resolve_package_element
+ *
+ * PARAMETERS: element_ptr - Pointer to a reference object
+ *
+ * RETURN: Possible new element is stored to the indirect element_ptr
+ *
+ * DESCRIPTION: Resolve a package element that is a reference to a named
+ * object.
+ *
+ ******************************************************************************/
+
+static void
+acpi_ds_resolve_package_element(union acpi_operand_object **element_ptr)
+{
+ acpi_status status;
+ union acpi_generic_state scope_info;
+ union acpi_operand_object *element = *element_ptr;
+ struct acpi_namespace_node *resolved_node;
+ char *external_path = NULL;
+ acpi_object_type type;
+
+ ACPI_FUNCTION_TRACE(ds_resolve_package_element);
+
+ /* Check if reference element is already resolved */
+
+ if (element->reference.resolved) {
+ return_VOID;
+ }
+
+ /* Element must be a reference object of correct type */
+
+ scope_info.scope.node = element->reference.node; /* Prefix node */
+
+ status = acpi_ns_lookup(&scope_info, (char *)element->reference.aml, /* Pointer to AML path */
+ ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
+ ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
+ NULL, &resolved_node);
+ if (ACPI_FAILURE(status)) {
+ status = acpi_ns_externalize_name(ACPI_UINT32_MAX,
+ (char *)element->reference.
+ aml, NULL, &external_path);
+
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Could not find/resolve named package element: %s",
+ external_path));
+
+ ACPI_FREE(external_path);
+ *element_ptr = NULL;
+ return_VOID;
+ } else if (resolved_node->type == ACPI_TYPE_ANY) {
+
+ /* Named reference not resolved, return a NULL package element */
+
+ ACPI_ERROR((AE_INFO,
+ "Could not resolve named package element [%4.4s] in [%4.4s]",
+ resolved_node->name.ascii,
+ scope_info.scope.node->name.ascii));
+ *element_ptr = NULL;
+ return_VOID;
+ }
+#if 0
+ else if (resolved_node->flags & ANOBJ_TEMPORARY) {
+ /*
+ * A temporary node found here indicates that the reference is
+ * to a node that was created within this method. We are not
+ * going to allow it (especially if the package is returned
+ * from the method) -- the temporary node will be deleted out
+ * from under the method. (05/2017).
+ */
+ ACPI_ERROR((AE_INFO,
+ "Package element refers to a temporary name [%4.4s], "
+ "inserting a NULL element",
+ resolved_node->name.ascii));
+ *element_ptr = NULL;
+ return_VOID;
+ }
+#endif
+
+ /*
+ * Special handling for Alias objects. We need resolved_node to point
+ * to the Alias target. This effectively "resolves" the alias.
+ */
+ if (resolved_node->type == ACPI_TYPE_LOCAL_ALIAS) {
+ resolved_node = ACPI_CAST_PTR(struct acpi_namespace_node,
+ resolved_node->object);
+ }
+
+ /* Update the reference object */
+
+ element->reference.resolved = TRUE;
+ element->reference.node = resolved_node;
+ type = element->reference.node->type;
+
+ /*
+ * Attempt to resolve the node to a value before we insert it into
+ * the package. If this is a reference to a common data type,
+ * resolve it immediately. According to the ACPI spec, package
+ * elements can only be "data objects" or method references.
+ * Attempt to resolve to an Integer, Buffer, String or Package.
+ * If cannot, return the named reference (for things like Devices,
+ * Methods, etc.) Buffer Fields and Fields will resolve to simple
+ * objects (int/buf/str/pkg).
+ *
+ * NOTE: References to things like Devices, Methods, Mutexes, etc.
+ * will remain as named references. This behavior is not described
+ * in the ACPI spec, but it appears to be an oversight.
+ */
+ status = acpi_ex_resolve_node_to_value(&resolved_node, NULL);
+ if (ACPI_FAILURE(status)) {
+ return_VOID;
+ }
+#if 0
+/* TBD - alias support */
+ /*
+ * Special handling for Alias objects. We need to setup the type
+ * and the Op->Common.Node to point to the Alias target. Note,
+ * Alias has at most one level of indirection internally.
+ */
+ type = op->common.node->type;
+ if (type == ACPI_TYPE_LOCAL_ALIAS) {
+ type = obj_desc->common.type;
+ op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node,
+ op->common.node->object);
+ }
+#endif
+
+ switch (type) {
+ /*
+ * These object types are a result of named references, so we will
+ * leave them as reference objects. In other words, these types
+ * have no intrinsic "value".
+ */
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_THERMAL:
+
+ /* TBD: This may not be necesssary */
+
+ acpi_ut_add_reference(resolved_node->object);
+ break;
+
+ case ACPI_TYPE_MUTEX:
+ case ACPI_TYPE_METHOD:
+ case ACPI_TYPE_POWER:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_EVENT:
+ case ACPI_TYPE_REGION:
+
+ break;
+
+ default:
+ /*
+ * For all other types - the node was resolved to an actual
+ * operand object with a value, return the object
+ */
+ *element_ptr = (union acpi_operand_object *)resolved_node;
+ break;
+ }
+
+ return_VOID;
+}
u8 user_arg_type;
u32 i;
- /* If not a predefined name, cannot typecheck args */
-
- if (!info->predefined) {
+ /*
+ * If not a predefined name, cannot typecheck args, because
+ * we have no idea what argument types are expected.
+ * Also, ignore typecheck if warnings/errors if this method
+ * has already been evaluated at least once -- in order
+ * to suppress repetitive messages.
+ */
+ if (!info->predefined || (info->node->flags & ANOBJ_EVALUATED)) {
return;
}
acpi_ut_get_type_name
(user_arg_type),
acpi_ut_get_type_name(arg_type)));
+
+ /* Prevent any additional typechecking for this method */
+
+ info->node->flags |= ANOBJ_EVALUATED;
}
}
}
u32 aml_param_count;
u32 required_param_count;
- if (!predefined) {
+ if (!predefined || (node->flags & ANOBJ_EVALUATED)) {
return;
}
u32 aml_param_count;
u32 required_param_count;
+ if (node->flags & ANOBJ_EVALUATED) {
+ return;
+ }
+
if (!predefined) {
/*
* Not a predefined name. Check the incoming user argument count
info->package_init++;
status = acpi_ds_get_package_arguments(obj_desc);
+ if (ACPI_FAILURE(status)) {
+ break;
+ }
+
+ /*
+ * Resolve all named references in package objects (and all
+ * sub-packages). This action has been deferred until the entire
+ * namespace has been loaded, in order to support external and
+ * forward references from individual package elements (05/2017).
+ */
+ status = acpi_ut_walk_package_tree(obj_desc, NULL,
+ acpi_ds_init_package_element,
+ NULL);
+ obj_desc->package.flags |= AOPOBJ_DATA_VALID;
break;
default:
{
acpi_size size;
- ACPI_FUNCTION_ENTRY();
+ /* Validate the Node */
+
+ if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
+ ACPI_ERROR((AE_INFO,
+ "Invalid/cached reference target node: %p, descriptor type %d",
+ node, ACPI_GET_DESCRIPTOR_TYPE(node)));
+ return (0);
+ }
size = acpi_ns_build_normalized_path(node, NULL, 0, FALSE);
return (size);
INCREMENT_ARG_LIST(walk_state->arg_types);
}
+ ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
+ "Final argument count: %u pass %u\n",
+ walk_state->arg_count,
+ walk_state->pass_number));
+
/*
* Handle executable code at "module-level". This refers to
* executable opcodes that appear outside of any control method.
AML_NAME_OP)
&& (walk_state->pass_number <=
ACPI_IMODE_LOAD_PASS2)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
+ "Setup Package/Buffer: Pass %u, AML Ptr: %p\n",
+ walk_state->pass_number,
+ aml_op_start));
+
/*
* Skip parsing of Buffers and Packages because we don't have
* enough info in the first pass to parse them correctly.
/* Check for arguments that need to be processed */
+ ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
+ "Parseloop: argument count: %u\n",
+ walk_state->arg_count));
+
if (walk_state->arg_count) {
/*
* There are arguments (complex ones), push Op and
*
* RETURN: Status
*
- * DESCRIPTION: Walk through a package
+ * DESCRIPTION: Walk through a package, including subpackages
*
******************************************************************************/
acpi_status status = AE_OK;
union acpi_generic_state *state_list = NULL;
union acpi_generic_state *state;
- u32 this_index;
union acpi_operand_object *this_source_obj;
+ u32 this_index;
ACPI_FUNCTION_TRACE(ut_walk_package_tree);
/* Get one element of the package */
this_index = state->pkg.index;
- this_source_obj = (union acpi_operand_object *)
+ this_source_obj =
state->pkg.source_object->package.elements[this_index];
+ state->pkg.this_target_obj =
+ &state->pkg.source_object->package.elements[this_index];
/*
* Check for:
/* A namespace node should never get here */
+ ACPI_ERROR((AE_INFO,
+ "Received a namespace node [%4.4s] "
+ "where an operand object is required",
+ ACPI_CAST_PTR(struct acpi_namespace_node,
+ internal_object)->name.ascii));
return_ACPI_STATUS(AE_AML_INTERNAL);
}
union acpi_generic_state *acpi_ut_create_pkg_state(void *internal_object,
void *external_object,
- u16 index)
+ u32 index)
{
union acpi_generic_state *state;
return_VOID;
}
+ if (!acpi_gbl_global_list) {
+ goto exit;
+ }
+
element = acpi_gbl_global_list->list_head;
while (element) {
if ((element->component & component) &&
if (element->size <
sizeof(struct acpi_common_descriptor)) {
- acpi_os_printf("%p Length 0x%04X %9.9s-%u "
+ acpi_os_printf("%p Length 0x%04X %9.9s-%4.4u "
"[Not a Descriptor - too small]\n",
descriptor, element->size,
element->module, element->line);
if (ACPI_GET_DESCRIPTOR_TYPE(descriptor) !=
ACPI_DESC_TYPE_CACHED) {
acpi_os_printf
- ("%p Length 0x%04X %9.9s-%u [%s] ",
+ ("%p Length 0x%04X %9.9s-%4.4u [%s] ",
descriptor, element->size,
element->module, element->line,
acpi_ut_get_descriptor_name
element = element->next;
}
+exit:
(void)acpi_ut_release_mutex(ACPI_MTX_MEMORY);
/* Print summary */
projects / nvme.git / commitdiff