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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: dswscope - Scope stack manipulation * * Copyright (C) 2000 - 2022, Intel Corp. * *****************************************************************************/ #include <acpi/acpi.h> #include "accommon.h" #include "acdispat.h" #define _COMPONENT ACPI_DISPATCHER ACPI_MODULE_NAME("dswscope") /**************************************************************************** * * FUNCTION: acpi_ds_scope_stack_clear * * PARAMETERS: walk_state - Current state * * RETURN: None * * DESCRIPTION: Pop (and free) everything on the scope stack except the * root scope object (which remains at the stack top.) * ***************************************************************************/ void acpi_ds_scope_stack_clear(struct acpi_walk_state *walk_state) { union acpi_generic_state *scope_info; ACPI_FUNCTION_NAME(ds_scope_stack_clear); while (walk_state->scope_info) { /* Pop a scope off the stack */ scope_info = walk_state->scope_info; walk_state->scope_info = scope_info->scope.next; ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Popped object type (%s)\n", acpi_ut_get_type_name(scope_info->common. value))); acpi_ut_delete_generic_state(scope_info); } } /**************************************************************************** * * FUNCTION: acpi_ds_scope_stack_push * * PARAMETERS: node - Name to be made current * type - Type of frame being pushed * walk_state - Current state * * RETURN: Status * * DESCRIPTION: Push the current scope on the scope stack, and make the * passed Node current. * ***************************************************************************/ acpi_status acpi_ds_scope_stack_push(struct acpi_namespace_node *node, acpi_object_type type, struct acpi_walk_state *walk_state) { union acpi_generic_state *scope_info; union acpi_generic_state *old_scope_info; ACPI_FUNCTION_TRACE(ds_scope_stack_push); if (!node) { /* Invalid scope */ ACPI_ERROR((AE_INFO, "Null scope parameter")); return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Make sure object type is valid */ if (!acpi_ut_valid_object_type(type)) { ACPI_WARNING((AE_INFO, "Invalid object type: 0x%X", type)); } /* Allocate a new scope object */ scope_info = acpi_ut_create_generic_state(); if (!scope_info) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Init new scope object */ scope_info->common.descriptor_type = ACPI_DESC_TYPE_STATE_WSCOPE; scope_info->scope.node = node; scope_info->common.value = (u16) type; walk_state->scope_depth++; ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%.2d] Pushed scope ", (u32) walk_state->scope_depth)); old_scope_info = walk_state->scope_info; if (old_scope_info) { ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[%4.4s] (%s)", acpi_ut_get_node_name(old_scope_info-> scope.node), acpi_ut_get_type_name(old_scope_info-> common.value))); } else { ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, ACPI_NAMESPACE_ROOT)); } ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, ", New scope -> [%4.4s] (%s)\n", acpi_ut_get_node_name(scope_info->scope.node), acpi_ut_get_type_name(scope_info->common.value))); /* Push new scope object onto stack */ acpi_ut_push_generic_state(&walk_state->scope_info, scope_info); return_ACPI_STATUS(AE_OK); } /**************************************************************************** * * FUNCTION: acpi_ds_scope_stack_pop * * PARAMETERS: walk_state - Current state * * RETURN: Status * * DESCRIPTION: Pop the scope stack once. * ***************************************************************************/ acpi_status acpi_ds_scope_stack_pop(struct acpi_walk_state *walk_state) { union acpi_generic_state *scope_info; union acpi_generic_state *new_scope_info; ACPI_FUNCTION_TRACE(ds_scope_stack_pop); /* * Pop scope info object off the stack. */ scope_info = acpi_ut_pop_generic_state(&walk_state->scope_info); if (!scope_info) { return_ACPI_STATUS(AE_STACK_UNDERFLOW); } walk_state->scope_depth--; ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%.2d] Popped scope [%4.4s] (%s), New scope -> ", (u32) walk_state->scope_depth, acpi_ut_get_node_name(scope_info->scope.node), acpi_ut_get_type_name(scope_info->common.value))); new_scope_info = walk_state->scope_info; if (new_scope_info) { ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[%4.4s] (%s)\n", acpi_ut_get_node_name(new_scope_info-> scope.node), acpi_ut_get_type_name(new_scope_info-> common.value))); } else { ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "%s\n", ACPI_NAMESPACE_ROOT)); } acpi_ut_delete_generic_state(scope_info); return_ACPI_STATUS(AE_OK); } |