^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Module Name: dspkginit - Completion of deferred package initialization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2000 - 2020, Intel Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <acpi/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "accommon.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "acnamesp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "amlcode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "acdispat.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "acinterp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "acparser.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define _COMPONENT ACPI_NAMESPACE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) ACPI_MODULE_NAME("dspkginit")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* Local prototypes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) acpi_ds_resolve_package_element(union acpi_operand_object **element);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * FUNCTION: acpi_ds_build_internal_package_obj
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * PARAMETERS: walk_state - Current walk state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * op - Parser object to be translated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * element_count - Number of elements in the package - this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * the num_elements argument to Package()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * obj_desc_ptr - Where the ACPI internal object is returned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * DESCRIPTION: Translate a parser Op package object to the equivalent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * namespace object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * NOTE: The number of elements in the package will be always be the num_elements
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * count, regardless of the number of elements in the package list. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * num_elements is smaller, only that many package list elements are used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * if num_elements is larger, the Package object is padded out with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * objects of type Uninitialized (as per ACPI spec.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * Even though the ASL compilers do not allow num_elements to be smaller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * than the Package list length (for the fixed length package opcode), some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * BIOS code modifies the AML on the fly to adjust the num_elements, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * this code compensates for that. This also provides compatibility with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * other AML interpreters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) union acpi_parse_object *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u32 element_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) union acpi_operand_object **obj_desc_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) union acpi_parse_object *arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) union acpi_parse_object *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) union acpi_operand_object *obj_desc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) acpi_status status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u8 module_level_code = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u16 reference_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u32 index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u32 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) ACPI_FUNCTION_TRACE(ds_build_internal_package_obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* Check if we are executing module level code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (walk_state->parse_flags & ACPI_PARSE_MODULE_LEVEL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) module_level_code = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /* Find the parent of a possibly nested package */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) parent = op->common.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) while ((parent->common.aml_opcode == AML_PACKAGE_OP) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) (parent->common.aml_opcode == AML_VARIABLE_PACKAGE_OP)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) parent = parent->common.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * If we are evaluating a Named package object of the form:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * Name (xxxx, Package)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * the package object already exists, otherwise it must be created.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) obj_desc = *obj_desc_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (!obj_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) *obj_desc_ptr = obj_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (!obj_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return_ACPI_STATUS(AE_NO_MEMORY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) obj_desc->package.node = parent->common.node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (obj_desc->package.flags & AOPOBJ_DATA_VALID) { /* Just in case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * Allocate the element array (array of pointers to the individual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * objects) if necessary. the count is based on the num_elements
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * parameter. Add an extra pointer slot so that the list is always
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * null terminated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (!obj_desc->package.elements) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) obj_desc->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) element_count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 1) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) sizeof(void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (!obj_desc->package.elements) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) acpi_ut_delete_object_desc(obj_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return_ACPI_STATUS(AE_NO_MEMORY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) obj_desc->package.count = element_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /* First arg is element count. Second arg begins the initializer list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) arg = op->common.value.arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) arg = arg->common.next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * If we are executing module-level code, we will defer the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * full resolution of the package elements in order to support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * forward references from the elements. This provides
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * compatibility with other ACPI implementations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (module_level_code) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) obj_desc->package.aml_start = walk_state->aml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) obj_desc->package.aml_length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) "%s: Deferring resolution of Package elements\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ACPI_GET_FUNCTION_NAME));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * Initialize the elements of the package, up to the num_elements count.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * Package is automatically padded with uninitialized (NULL) elements
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * if num_elements is greater than the package list length. Likewise,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * Package is truncated if num_elements is less than the list length.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) for (i = 0; arg && (i < element_count); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (!arg->common.node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * This is the case where an expression has returned a value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * The use of expressions (term_args) within individual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * package elements is not supported by the AML interpreter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * even though the ASL grammar supports it. Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * Name (INT1, 0x1234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * Name (PKG3, Package () {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * Add (INT1, 0xAAAA0000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * 1) No known AML interpreter supports this type of construct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * 2) This fixes a fault if the construct is encountered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ACPI_EXCEPTION((AE_INFO, AE_SUPPORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) "Expressions within package elements are not supported"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) /* Cleanup the return object, it is not needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) acpi_ut_remove_reference(walk_state->results->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) results.obj_desc[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return_ACPI_STATUS(AE_SUPPORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (arg->common.node->type == ACPI_TYPE_METHOD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * A method reference "looks" to the parser to be a method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * invocation, so we special case it here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) arg->common.aml_opcode = AML_INT_NAMEPATH_OP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) acpi_ds_build_internal_object(walk_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) arg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) &obj_desc->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) package.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) elements[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /* This package element is already built, just get it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) obj_desc->package.elements[i] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) ACPI_CAST_PTR(union acpi_operand_object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) arg->common.node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) acpi_ds_build_internal_object(walk_state, arg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) &obj_desc->package.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) elements[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (status == AE_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) ACPI_ERROR((AE_INFO, "%-48s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) "****DS namepath not found"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (!module_level_code) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * Initialize this package element. This function handles the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * resolution of named references within the package.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * Forward references from module-level code are deferred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * until all ACPI tables are loaded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) acpi_ds_init_package_element(0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) obj_desc->package.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) elements[i], NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) &obj_desc->package.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) elements[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (*obj_desc_ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /* Existing package, get existing reference count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) reference_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) (*obj_desc_ptr)->common.reference_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (reference_count > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /* Make new element ref count match original ref count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* TBD: Probably need an acpi_ut_add_references function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) for (index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) index < ((u32)reference_count - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) index++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) acpi_ut_add_reference((obj_desc->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) package.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) elements[i]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) arg = arg->common.next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) /* Check for match between num_elements and actual length of package_list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (arg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * num_elements was exhausted, but there are remaining elements in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * the package_list. Truncate the package to num_elements.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * Note: technically, this is an error, from ACPI spec: "It is an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * error for NumElements to be less than the number of elements in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * the PackageList". However, we just print a message and no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * exception is returned. This provides compatibility with other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * ACPI implementations. Some firmware implementations will alter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * the num_elements on the fly, possibly creating this type of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * ill-formed package object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) while (arg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * We must delete any package elements that were created earlier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * and are not going to be used because of the package truncation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (arg->common.node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) acpi_ut_remove_reference(ACPI_CAST_PTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) (union
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) acpi_operand_object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) arg->common.node));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) arg->common.node = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) /* Find out how many elements there really are */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) arg = arg->common.next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) ACPI_INFO(("Actual Package length (%u) is larger than "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) "NumElements field (%u), truncated",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) i, element_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) } else if (i < element_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * Arg list (elements) was exhausted, but we did not reach
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * num_elements count.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * Note: this is not an error, the package is padded out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * with NULLs as per the ACPI specification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) "%s: Package List length (%u) smaller than NumElements "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) "count (%u), padded with null elements\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) ACPI_GET_FUNCTION_NAME, i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) element_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /* Module-level packages will be resolved later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (!module_level_code) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) obj_desc->package.flags |= AOPOBJ_DATA_VALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * FUNCTION: acpi_ds_init_package_element
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * PARAMETERS: acpi_pkg_callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * DESCRIPTION: Resolve a named reference element within a package object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) acpi_ds_init_package_element(u8 object_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) union acpi_operand_object *source_object,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) union acpi_generic_state *state, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) union acpi_operand_object **element_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) ACPI_FUNCTION_TRACE(ds_init_package_element);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (!source_object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) * The following code is a bit of a hack to workaround a (current)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) * limitation of the acpi_pkg_callback interface. We need a pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * to the location within the element array because a new object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) * may be created and stored there.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if (context) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /* A direct call was made to this function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) element_ptr = (union acpi_operand_object **)context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /* Call came from acpi_ut_walk_package_tree */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) element_ptr = state->pkg.this_target_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /* We are only interested in reference objects/elements */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (source_object->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /* Attempt to resolve the (named) reference to a namespace node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) acpi_ds_resolve_package_element(element_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) } else if (source_object->common.type == ACPI_TYPE_PACKAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) source_object->package.flags |= AOPOBJ_DATA_VALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) * FUNCTION: acpi_ds_resolve_package_element
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) * PARAMETERS: element_ptr - Pointer to a reference object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) * RETURN: Possible new element is stored to the indirect element_ptr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) * DESCRIPTION: Resolve a package element that is a reference to a named
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) * object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) acpi_ds_resolve_package_element(union acpi_operand_object **element_ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) acpi_status status2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) union acpi_generic_state scope_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) union acpi_operand_object *element = *element_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) struct acpi_namespace_node *resolved_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) struct acpi_namespace_node *original_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) char *external_path = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) acpi_object_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) ACPI_FUNCTION_TRACE(ds_resolve_package_element);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /* Check if reference element is already resolved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (element->reference.resolved) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) "%s: Package element is already resolved\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) ACPI_GET_FUNCTION_NAME));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) /* Element must be a reference object of correct type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) scope_info.scope.node = element->reference.node; /* Prefix node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) status = acpi_ns_lookup(&scope_info, (char *)element->reference.aml,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) NULL, &resolved_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if ((status == AE_NOT_FOUND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) && acpi_gbl_ignore_package_resolution_errors) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * Optionally be silent about the NOT_FOUND case for the referenced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * name. Although this is potentially a serious problem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * it can generate a lot of noise/errors on platforms whose
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * firmware carries around a bunch of unused Package objects.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) * To disable these errors, set this global to TRUE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * acpi_gbl_ignore_package_resolution_errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * If the AML actually tries to use such a package, the unresolved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) * element(s) will be replaced with NULL elements.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) /* Referenced name not found, set the element to NULL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) acpi_ut_remove_reference(*element_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) *element_ptr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) status2 = acpi_ns_externalize_name(ACPI_UINT32_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) (char *)element->reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) aml, NULL, &external_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) ACPI_EXCEPTION((AE_INFO, status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) "While resolving a named reference package element - %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) external_path));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (ACPI_SUCCESS(status2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) ACPI_FREE(external_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /* Could not resolve name, set the element to NULL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) acpi_ut_remove_reference(*element_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) *element_ptr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) } else if (resolved_node->type == ACPI_TYPE_ANY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) /* Named reference not resolved, return a NULL package element */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) ACPI_ERROR((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) "Could not resolve named package element [%4.4s] in [%4.4s]",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) resolved_node->name.ascii,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) scope_info.scope.node->name.ascii));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) *element_ptr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) * Special handling for Alias objects. We need resolved_node to point
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * to the Alias target. This effectively "resolves" the alias.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if (resolved_node->type == ACPI_TYPE_LOCAL_ALIAS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) resolved_node = ACPI_CAST_PTR(struct acpi_namespace_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) resolved_node->object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) /* Update the reference object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) element->reference.resolved = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) element->reference.node = resolved_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) type = element->reference.node->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * Attempt to resolve the node to a value before we insert it into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * the package. If this is a reference to a common data type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * resolve it immediately. According to the ACPI spec, package
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) * elements can only be "data objects" or method references.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * Attempt to resolve to an Integer, Buffer, String or Package.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * If cannot, return the named reference (for things like Devices,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) * Methods, etc.) Buffer Fields and Fields will resolve to simple
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * objects (int/buf/str/pkg).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) * NOTE: References to things like Devices, Methods, Mutexes, etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * will remain as named references. This behavior is not described
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) * in the ACPI spec, but it appears to be an oversight.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) original_node = resolved_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) status = acpi_ex_resolve_node_to_value(&resolved_node, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) * These object types are a result of named references, so we will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * leave them as reference objects. In other words, these types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) * have no intrinsic "value".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) case ACPI_TYPE_DEVICE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) case ACPI_TYPE_THERMAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) case ACPI_TYPE_METHOD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) case ACPI_TYPE_MUTEX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) case ACPI_TYPE_POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) case ACPI_TYPE_PROCESSOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) case ACPI_TYPE_EVENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) case ACPI_TYPE_REGION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) /* acpi_ex_resolve_node_to_value gave these an extra reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) acpi_ut_remove_reference(original_node->object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) * For all other types - the node was resolved to an actual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * operand object with a value, return the object. Remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * a reference on the existing object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) acpi_ut_remove_reference(element);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) *element_ptr = (union acpi_operand_object *)resolved_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) return_VOID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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