739 lines
19 KiB
C
739 lines
19 KiB
C
|
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
|
||
|
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* Module Name: nsprepkg - Validation of package objects for predefined names
|
||
|
|
*
|
||
|
|
* Copyright (C) 2000 - 2019, Intel Corp.
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
#include <acpi/acpi.h>
|
||
|
|
#include "accommon.h"
|
||
|
|
#include "acnamesp.h"
|
||
|
|
#include "acpredef.h"
|
||
|
|
|
||
|
|
#define _COMPONENT ACPI_NAMESPACE
|
||
|
|
ACPI_MODULE_NAME("nsprepkg")
|
||
|
|
|
||
|
|
/* Local prototypes */
|
||
|
|
static acpi_status
|
||
|
|
acpi_ns_check_package_list(struct acpi_evaluate_info *info,
|
||
|
|
const union acpi_predefined_info *package,
|
||
|
|
union acpi_operand_object **elements, u32 count);
|
||
|
|
|
||
|
|
static acpi_status
|
||
|
|
acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
|
||
|
|
union acpi_operand_object **elements,
|
||
|
|
u8 type1,
|
||
|
|
u32 count1,
|
||
|
|
u8 type2, u32 count2, u32 start_index);
|
||
|
|
|
||
|
|
static acpi_status
|
||
|
|
acpi_ns_custom_package(struct acpi_evaluate_info *info,
|
||
|
|
union acpi_operand_object **elements, u32 count);
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ns_check_package
|
||
|
|
*
|
||
|
|
* PARAMETERS: info - Method execution information block
|
||
|
|
* return_object_ptr - Pointer to the object returned from the
|
||
|
|
* evaluation of a method or object
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Check a returned package object for the correct count and
|
||
|
|
* correct type of all sub-objects.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_ns_check_package(struct acpi_evaluate_info *info,
|
||
|
|
union acpi_operand_object **return_object_ptr)
|
||
|
|
{
|
||
|
|
union acpi_operand_object *return_object = *return_object_ptr;
|
||
|
|
const union acpi_predefined_info *package;
|
||
|
|
union acpi_operand_object **elements;
|
||
|
|
acpi_status status = AE_OK;
|
||
|
|
u32 expected_count;
|
||
|
|
u32 count;
|
||
|
|
u32 i;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_NAME(ns_check_package);
|
||
|
|
|
||
|
|
/* The package info for this name is in the next table entry */
|
||
|
|
|
||
|
|
package = info->predefined + 1;
|
||
|
|
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
|
||
|
|
"%s Validating return Package of Type %X, Count %X\n",
|
||
|
|
info->full_pathname, package->ret_info.type,
|
||
|
|
return_object->package.count));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* For variable-length Packages, we can safely remove all embedded
|
||
|
|
* and trailing NULL package elements
|
||
|
|
*/
|
||
|
|
acpi_ns_remove_null_elements(info, package->ret_info.type,
|
||
|
|
return_object);
|
||
|
|
|
||
|
|
/* Extract package count and elements array */
|
||
|
|
|
||
|
|
elements = return_object->package.elements;
|
||
|
|
count = return_object->package.count;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Most packages must have at least one element. The only exception
|
||
|
|
* is the variable-length package (ACPI_PTYPE1_VAR).
|
||
|
|
*/
|
||
|
|
if (!count) {
|
||
|
|
if (package->ret_info.type == ACPI_PTYPE1_VAR) {
|
||
|
|
return (AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
|
||
|
|
info->node_flags,
|
||
|
|
"Return Package has no elements (empty)"));
|
||
|
|
|
||
|
|
return (AE_AML_OPERAND_VALUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Decode the type of the expected package contents
|
||
|
|
*
|
||
|
|
* PTYPE1 packages contain no subpackages
|
||
|
|
* PTYPE2 packages contain subpackages
|
||
|
|
*/
|
||
|
|
switch (package->ret_info.type) {
|
||
|
|
case ACPI_PTYPE_CUSTOM:
|
||
|
|
|
||
|
|
status = acpi_ns_custom_package(info, elements, count);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE1_FIXED:
|
||
|
|
/*
|
||
|
|
* The package count is fixed and there are no subpackages
|
||
|
|
*
|
||
|
|
* If package is too small, exit.
|
||
|
|
* If package is larger than expected, issue warning but continue
|
||
|
|
*/
|
||
|
|
expected_count =
|
||
|
|
package->ret_info.count1 + package->ret_info.count2;
|
||
|
|
if (count < expected_count) {
|
||
|
|
goto package_too_small;
|
||
|
|
} else if (count > expected_count) {
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
|
||
|
|
"%s: Return Package is larger than needed - "
|
||
|
|
"found %u, expected %u\n",
|
||
|
|
info->full_pathname, count,
|
||
|
|
expected_count));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Validate all elements of the returned package */
|
||
|
|
|
||
|
|
status = acpi_ns_check_package_elements(info, elements,
|
||
|
|
package->ret_info.
|
||
|
|
object_type1,
|
||
|
|
package->ret_info.
|
||
|
|
count1,
|
||
|
|
package->ret_info.
|
||
|
|
object_type2,
|
||
|
|
package->ret_info.
|
||
|
|
count2, 0);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE1_VAR:
|
||
|
|
/*
|
||
|
|
* The package count is variable, there are no subpackages, and all
|
||
|
|
* elements must be of the same type
|
||
|
|
*/
|
||
|
|
for (i = 0; i < count; i++) {
|
||
|
|
status = acpi_ns_check_object_type(info, elements,
|
||
|
|
package->ret_info.
|
||
|
|
object_type1, i);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
elements++;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE1_OPTION:
|
||
|
|
/*
|
||
|
|
* The package count is variable, there are no subpackages. There are
|
||
|
|
* a fixed number of required elements, and a variable number of
|
||
|
|
* optional elements.
|
||
|
|
*
|
||
|
|
* Check if package is at least as large as the minimum required
|
||
|
|
*/
|
||
|
|
expected_count = package->ret_info3.count;
|
||
|
|
if (count < expected_count) {
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Variable number of sub-objects */
|
||
|
|
|
||
|
|
for (i = 0; i < count; i++) {
|
||
|
|
if (i < package->ret_info3.count) {
|
||
|
|
|
||
|
|
/* These are the required package elements (0, 1, or 2) */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_object_type(info, elements,
|
||
|
|
package->
|
||
|
|
ret_info3.
|
||
|
|
object_type[i],
|
||
|
|
i);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
/* These are the optional package elements */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_object_type(info, elements,
|
||
|
|
package->
|
||
|
|
ret_info3.
|
||
|
|
tail_object_type,
|
||
|
|
i);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
elements++;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_REV_FIXED:
|
||
|
|
|
||
|
|
/* First element is the (Integer) revision */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_object_type(info, elements,
|
||
|
|
ACPI_RTYPE_INTEGER, 0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
elements++;
|
||
|
|
count--;
|
||
|
|
|
||
|
|
/* Examine the subpackages */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_package_list(info, package, elements, count);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_PKG_COUNT:
|
||
|
|
|
||
|
|
/* First element is the (Integer) count of subpackages to follow */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_object_type(info, elements,
|
||
|
|
ACPI_RTYPE_INTEGER, 0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Count cannot be larger than the parent package length, but allow it
|
||
|
|
* to be smaller. The >= accounts for the Integer above.
|
||
|
|
*/
|
||
|
|
expected_count = (u32)(*elements)->integer.value;
|
||
|
|
if (expected_count >= count) {
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
count = expected_count;
|
||
|
|
elements++;
|
||
|
|
|
||
|
|
/* Examine the subpackages */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_package_list(info, package, elements, count);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2:
|
||
|
|
case ACPI_PTYPE2_FIXED:
|
||
|
|
case ACPI_PTYPE2_MIN:
|
||
|
|
case ACPI_PTYPE2_COUNT:
|
||
|
|
case ACPI_PTYPE2_FIX_VAR:
|
||
|
|
/*
|
||
|
|
* These types all return a single Package that consists of a
|
||
|
|
* variable number of subpackages.
|
||
|
|
*
|
||
|
|
* First, ensure that the first element is a subpackage. If not,
|
||
|
|
* the BIOS may have incorrectly returned the object as a single
|
||
|
|
* package instead of a Package of Packages (a common error if
|
||
|
|
* there is only one entry). We may be able to repair this by
|
||
|
|
* wrapping the returned Package with a new outer Package.
|
||
|
|
*/
|
||
|
|
if (*elements
|
||
|
|
&& ((*elements)->common.type != ACPI_TYPE_PACKAGE)) {
|
||
|
|
|
||
|
|
/* Create the new outer package and populate it */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_wrap_with_package(info, return_object,
|
||
|
|
return_object_ptr);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Update locals to point to the new package (of 1 element) */
|
||
|
|
|
||
|
|
return_object = *return_object_ptr;
|
||
|
|
elements = return_object->package.elements;
|
||
|
|
count = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Examine the subpackages */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_package_list(info, package, elements, count);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_VAR_VAR:
|
||
|
|
/*
|
||
|
|
* Returns a variable list of packages, each with a variable list
|
||
|
|
* of objects.
|
||
|
|
*/
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_UUID_PAIR:
|
||
|
|
|
||
|
|
/* The package must contain pairs of (UUID + type) */
|
||
|
|
|
||
|
|
if (count & 1) {
|
||
|
|
expected_count = count + 1;
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
while (count > 0) {
|
||
|
|
status = acpi_ns_check_object_type(info, elements,
|
||
|
|
package->ret_info.
|
||
|
|
object_type1, 0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Validate length of the UUID buffer */
|
||
|
|
|
||
|
|
if ((*elements)->buffer.length != 16) {
|
||
|
|
ACPI_WARN_PREDEFINED((AE_INFO,
|
||
|
|
info->full_pathname,
|
||
|
|
info->node_flags,
|
||
|
|
"Invalid length for UUID Buffer"));
|
||
|
|
return (AE_AML_OPERAND_VALUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
status = acpi_ns_check_object_type(info, elements + 1,
|
||
|
|
package->ret_info.
|
||
|
|
object_type2, 0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
elements += 2;
|
||
|
|
count -= 2;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
|
||
|
|
/* Should not get here if predefined info table is correct */
|
||
|
|
|
||
|
|
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
|
||
|
|
info->node_flags,
|
||
|
|
"Invalid internal return type in table entry: %X",
|
||
|
|
package->ret_info.type));
|
||
|
|
|
||
|
|
return (AE_AML_INTERNAL);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (status);
|
||
|
|
|
||
|
|
package_too_small:
|
||
|
|
|
||
|
|
/* Error exit for the case with an incorrect package count */
|
||
|
|
|
||
|
|
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
|
||
|
|
"Return Package is too small - found %u elements, expected %u",
|
||
|
|
count, expected_count));
|
||
|
|
|
||
|
|
return (AE_AML_OPERAND_VALUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ns_check_package_list
|
||
|
|
*
|
||
|
|
* PARAMETERS: info - Method execution information block
|
||
|
|
* package - Pointer to package-specific info for method
|
||
|
|
* elements - Element list of parent package. All elements
|
||
|
|
* of this list should be of type Package.
|
||
|
|
* count - Count of subpackages
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Examine a list of subpackages
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
static acpi_status
|
||
|
|
acpi_ns_check_package_list(struct acpi_evaluate_info *info,
|
||
|
|
const union acpi_predefined_info *package,
|
||
|
|
union acpi_operand_object **elements, u32 count)
|
||
|
|
{
|
||
|
|
union acpi_operand_object *sub_package;
|
||
|
|
union acpi_operand_object **sub_elements;
|
||
|
|
acpi_status status;
|
||
|
|
u32 expected_count;
|
||
|
|
u32 i;
|
||
|
|
u32 j;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Validate each subpackage in the parent Package
|
||
|
|
*
|
||
|
|
* NOTE: assumes list of subpackages contains no NULL elements.
|
||
|
|
* Any NULL elements should have been removed by earlier call
|
||
|
|
* to acpi_ns_remove_null_elements.
|
||
|
|
*/
|
||
|
|
for (i = 0; i < count; i++) {
|
||
|
|
sub_package = *elements;
|
||
|
|
sub_elements = sub_package->package.elements;
|
||
|
|
info->parent_package = sub_package;
|
||
|
|
|
||
|
|
/* Each sub-object must be of type Package */
|
||
|
|
|
||
|
|
status = acpi_ns_check_object_type(info, &sub_package,
|
||
|
|
ACPI_RTYPE_PACKAGE, i);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Examine the different types of expected subpackages */
|
||
|
|
|
||
|
|
info->parent_package = sub_package;
|
||
|
|
switch (package->ret_info.type) {
|
||
|
|
case ACPI_PTYPE2:
|
||
|
|
case ACPI_PTYPE2_PKG_COUNT:
|
||
|
|
case ACPI_PTYPE2_REV_FIXED:
|
||
|
|
|
||
|
|
/* Each subpackage has a fixed number of elements */
|
||
|
|
|
||
|
|
expected_count =
|
||
|
|
package->ret_info.count1 + package->ret_info.count2;
|
||
|
|
if (sub_package->package.count < expected_count) {
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_package_elements(info, sub_elements,
|
||
|
|
package->ret_info.
|
||
|
|
object_type1,
|
||
|
|
package->ret_info.
|
||
|
|
count1,
|
||
|
|
package->ret_info.
|
||
|
|
object_type2,
|
||
|
|
package->ret_info.
|
||
|
|
count2, 0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_FIX_VAR:
|
||
|
|
/*
|
||
|
|
* Each subpackage has a fixed number of elements and an
|
||
|
|
* optional element
|
||
|
|
*/
|
||
|
|
expected_count =
|
||
|
|
package->ret_info.count1 + package->ret_info.count2;
|
||
|
|
if (sub_package->package.count < expected_count) {
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_package_elements(info, sub_elements,
|
||
|
|
package->ret_info.
|
||
|
|
object_type1,
|
||
|
|
package->ret_info.
|
||
|
|
count1,
|
||
|
|
package->ret_info.
|
||
|
|
object_type2,
|
||
|
|
sub_package->package.
|
||
|
|
count -
|
||
|
|
package->ret_info.
|
||
|
|
count1, 0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_VAR_VAR:
|
||
|
|
/*
|
||
|
|
* Each subpackage has a fixed or variable number of elements
|
||
|
|
*/
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_FIXED:
|
||
|
|
|
||
|
|
/* Each subpackage has a fixed length */
|
||
|
|
|
||
|
|
expected_count = package->ret_info2.count;
|
||
|
|
if (sub_package->package.count < expected_count) {
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check the type of each subpackage element */
|
||
|
|
|
||
|
|
for (j = 0; j < expected_count; j++) {
|
||
|
|
status =
|
||
|
|
acpi_ns_check_object_type(info,
|
||
|
|
&sub_elements[j],
|
||
|
|
package->
|
||
|
|
ret_info2.
|
||
|
|
object_type[j],
|
||
|
|
j);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_MIN:
|
||
|
|
|
||
|
|
/* Each subpackage has a variable but minimum length */
|
||
|
|
|
||
|
|
expected_count = package->ret_info.count1;
|
||
|
|
if (sub_package->package.count < expected_count) {
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check the type of each subpackage element */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_package_elements(info, sub_elements,
|
||
|
|
package->ret_info.
|
||
|
|
object_type1,
|
||
|
|
sub_package->package.
|
||
|
|
count, 0, 0, 0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_PTYPE2_COUNT:
|
||
|
|
/*
|
||
|
|
* First element is the (Integer) count of elements, including
|
||
|
|
* the count field (the ACPI name is num_elements)
|
||
|
|
*/
|
||
|
|
status = acpi_ns_check_object_type(info, sub_elements,
|
||
|
|
ACPI_RTYPE_INTEGER,
|
||
|
|
0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Make sure package is large enough for the Count and is
|
||
|
|
* is as large as the minimum size
|
||
|
|
*/
|
||
|
|
expected_count = (u32)(*sub_elements)->integer.value;
|
||
|
|
if (sub_package->package.count < expected_count) {
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sub_package->package.count <
|
||
|
|
package->ret_info.count1) {
|
||
|
|
expected_count = package->ret_info.count1;
|
||
|
|
goto package_too_small;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (expected_count == 0) {
|
||
|
|
/*
|
||
|
|
* Either the num_entries element was originally zero or it was
|
||
|
|
* a NULL element and repaired to an Integer of value zero.
|
||
|
|
* In either case, repair it by setting num_entries to be the
|
||
|
|
* actual size of the subpackage.
|
||
|
|
*/
|
||
|
|
expected_count = sub_package->package.count;
|
||
|
|
(*sub_elements)->integer.value = expected_count;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check the type of each subpackage element */
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_ns_check_package_elements(info,
|
||
|
|
(sub_elements + 1),
|
||
|
|
package->ret_info.
|
||
|
|
object_type1,
|
||
|
|
(expected_count - 1),
|
||
|
|
0, 0, 1);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default: /* Should not get here, type was validated by caller */
|
||
|
|
|
||
|
|
ACPI_ERROR((AE_INFO, "Invalid Package type: %X",
|
||
|
|
package->ret_info.type));
|
||
|
|
return (AE_AML_INTERNAL);
|
||
|
|
}
|
||
|
|
|
||
|
|
elements++;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (AE_OK);
|
||
|
|
|
||
|
|
package_too_small:
|
||
|
|
|
||
|
|
/* The subpackage count was smaller than required */
|
||
|
|
|
||
|
|
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
|
||
|
|
"Return SubPackage[%u] is too small - found %u elements, expected %u",
|
||
|
|
i, sub_package->package.count, expected_count));
|
||
|
|
|
||
|
|
return (AE_AML_OPERAND_VALUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ns_custom_package
|
||
|
|
*
|
||
|
|
* PARAMETERS: info - Method execution information block
|
||
|
|
* elements - Pointer to the package elements array
|
||
|
|
* count - Element count for the package
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Check a returned package object for the correct count and
|
||
|
|
* correct type of all sub-objects.
|
||
|
|
*
|
||
|
|
* NOTE: Currently used for the _BIX method only. When needed for two or more
|
||
|
|
* methods, probably a detect/dispatch mechanism will be required.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
static acpi_status
|
||
|
|
acpi_ns_custom_package(struct acpi_evaluate_info *info,
|
||
|
|
union acpi_operand_object **elements, u32 count)
|
||
|
|
{
|
||
|
|
u32 expected_count;
|
||
|
|
u32 version;
|
||
|
|
acpi_status status = AE_OK;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_NAME(ns_custom_package);
|
||
|
|
|
||
|
|
/* Get version number, must be Integer */
|
||
|
|
|
||
|
|
if ((*elements)->common.type != ACPI_TYPE_INTEGER) {
|
||
|
|
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
|
||
|
|
info->node_flags,
|
||
|
|
"Return Package has invalid object type for version number"));
|
||
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
||
|
|
}
|
||
|
|
|
||
|
|
version = (u32)(*elements)->integer.value;
|
||
|
|
expected_count = 21; /* Version 1 */
|
||
|
|
|
||
|
|
if (version == 0) {
|
||
|
|
expected_count = 20; /* Version 0 */
|
||
|
|
}
|
||
|
|
|
||
|
|
if (count < expected_count) {
|
||
|
|
ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
|
||
|
|
info->node_flags,
|
||
|
|
"Return Package is too small - found %u elements, expected %u",
|
||
|
|
count, expected_count));
|
||
|
|
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
|
||
|
|
} else if (count > expected_count) {
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
|
||
|
|
"%s: Return Package is larger than needed - "
|
||
|
|
"found %u, expected %u\n",
|
||
|
|
info->full_pathname, count, expected_count));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Validate all elements of the returned package */
|
||
|
|
|
||
|
|
status = acpi_ns_check_package_elements(info, elements,
|
||
|
|
ACPI_RTYPE_INTEGER, 16,
|
||
|
|
ACPI_RTYPE_STRING, 4, 0);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Version 1 has a single trailing integer */
|
||
|
|
|
||
|
|
if (version > 0) {
|
||
|
|
status = acpi_ns_check_package_elements(info, elements + 20,
|
||
|
|
ACPI_RTYPE_INTEGER, 1,
|
||
|
|
0, 0, 20);
|
||
|
|
}
|
||
|
|
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ns_check_package_elements
|
||
|
|
*
|
||
|
|
* PARAMETERS: info - Method execution information block
|
||
|
|
* elements - Pointer to the package elements array
|
||
|
|
* type1 - Object type for first group
|
||
|
|
* count1 - Count for first group
|
||
|
|
* type2 - Object type for second group
|
||
|
|
* count2 - Count for second group
|
||
|
|
* start_index - Start of the first group of elements
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Check that all elements of a package are of the correct object
|
||
|
|
* type. Supports up to two groups of different object types.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
static acpi_status
|
||
|
|
acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
|
||
|
|
union acpi_operand_object **elements,
|
||
|
|
u8 type1,
|
||
|
|
u32 count1,
|
||
|
|
u8 type2, u32 count2, u32 start_index)
|
||
|
|
{
|
||
|
|
union acpi_operand_object **this_element = elements;
|
||
|
|
acpi_status status;
|
||
|
|
u32 i;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Up to two groups of package elements are supported by the data
|
||
|
|
* structure. All elements in each group must be of the same type.
|
||
|
|
* The second group can have a count of zero.
|
||
|
|
*/
|
||
|
|
for (i = 0; i < count1; i++) {
|
||
|
|
status = acpi_ns_check_object_type(info, this_element,
|
||
|
|
type1, i + start_index);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
this_element++;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < count2; i++) {
|
||
|
|
status = acpi_ns_check_object_type(info, this_element,
|
||
|
|
type2,
|
||
|
|
(i + count1 + start_index));
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return (status);
|
||
|
|
}
|
||
|
|
|
||
|
|
this_element++;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (AE_OK);
|
||
|
|
}
|