^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: nsaccess - Top-level functions for accessing ACPI namespace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <acpi/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "accommon.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "amlcode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "acnamesp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "acdispat.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #ifdef ACPI_ASL_COMPILER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "acdisasm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #endif
^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("nsaccess")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * FUNCTION: acpi_ns_root_initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * PARAMETERS: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * DESCRIPTION: Allocate and initialize the default root named objects
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * MUTEX: Locks namespace for entire execution
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) acpi_status acpi_ns_root_initialize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) const struct acpi_predefined_names *init_val = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct acpi_namespace_node *new_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct acpi_namespace_node *prev_node = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) union acpi_operand_object *obj_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) acpi_string val = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) ACPI_FUNCTION_TRACE(ns_root_initialize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * The global root ptr is initially NULL, so a non-NULL value indicates
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * that acpi_ns_root_initialize() has already been called; just return.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (acpi_gbl_root_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) goto unlock_and_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * Tell the rest of the subsystem that the root is initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * (This is OK because the namespace is locked)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) acpi_gbl_root_node = &acpi_gbl_root_node_struct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* Enter the predefined names in the name table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ACPI_DEBUG_PRINT((ACPI_DB_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) "Entering predefined entries into namespace\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * Create the initial (default) namespace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * This namespace looks like something similar to this:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * ACPI Namespace (from Namespace Root):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * 0 _GPE Scope 00203160 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * 0 _PR_ Scope 002031D0 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * 0 _SB_ Device 00203240 00 Notify Object: 0020ADD8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * 0 _SI_ Scope 002032B0 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * 0 _TZ_ Device 00203320 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * 0 _REV Integer 00203390 00 = 0000000000000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * 0 _OS_ String 00203488 00 Len 14 "Microsoft Windows NT"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * 0 _GL_ Mutex 00203580 00 Object 002035F0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * 0 _OSI Method 00203678 00 Args 1 Len 0000 Aml 00000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) for (init_val = acpi_gbl_pre_defined_names; init_val->name; init_val++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /* _OSI is optional for now, will be permanent later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (!strcmp(init_val->name, "_OSI")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) && !acpi_gbl_create_osi_method) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * Create, init, and link the new predefined name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * Note: No need to use acpi_ns_lookup here because all the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * predefined names are at the root level. It is much easier to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * just create and link the new node(s) here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) new_node =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) acpi_ns_create_node(*ACPI_CAST_PTR(u32, init_val->name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (!new_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) status = AE_NO_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) goto unlock_and_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) new_node->descriptor_type = ACPI_DESC_TYPE_NAMED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) new_node->type = init_val->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (!prev_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) acpi_gbl_root_node_struct.child = new_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) prev_node->peer = new_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) new_node->parent = &acpi_gbl_root_node_struct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) prev_node = new_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * Name entered successfully. If entry in pre_defined_names[] specifies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * an initial value, create the initial value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (init_val->val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) status = acpi_os_predefined_override(init_val, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) ACPI_ERROR((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) "Could not override predefined %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) init_val->name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (!val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) val = init_val->val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * Entry requests an initial value, allocate a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * descriptor for it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) obj_desc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) acpi_ut_create_internal_object(init_val->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!obj_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) status = AE_NO_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) goto unlock_and_exit;
^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) * Convert value string from table entry to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * internal representation. Only types actually
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * used for initial values are implemented here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) switch (init_val->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) case ACPI_TYPE_METHOD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) obj_desc->method.param_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) (u8) ACPI_TO_INTEGER(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) obj_desc->common.flags |= AOPOBJ_DATA_VALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #if defined (ACPI_ASL_COMPILER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /* Save the parameter count for the iASL compiler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) new_node->value = obj_desc->method.param_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /* Mark this as a very SPECIAL method (_OSI) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) obj_desc->method.info_flags =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) ACPI_METHOD_INTERNAL_ONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) obj_desc->method.dispatch.implementation =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) acpi_ut_osi_implementation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) case ACPI_TYPE_INTEGER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) obj_desc->integer.value = ACPI_TO_INTEGER(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) case ACPI_TYPE_STRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* Build an object around the static string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) obj_desc->string.length = (u32)strlen(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) obj_desc->string.pointer = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) case ACPI_TYPE_MUTEX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) obj_desc->mutex.node = new_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) obj_desc->mutex.sync_level =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) (u8) (ACPI_TO_INTEGER(val) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /* Create a mutex */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) acpi_os_create_mutex(&obj_desc->mutex.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) os_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) acpi_ut_remove_reference(obj_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) goto unlock_and_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /* Special case for ACPI Global Lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (strcmp(init_val->name, "_GL_") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) acpi_gbl_global_lock_mutex = obj_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /* Create additional counting semaphore for global lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) acpi_os_create_semaphore(1, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) &acpi_gbl_global_lock_semaphore);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) acpi_ut_remove_reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) (obj_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) goto unlock_and_exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ACPI_ERROR((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) "Unsupported initial type value 0x%X",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) init_val->type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) acpi_ut_remove_reference(obj_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) obj_desc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /* Store pointer to value descriptor in the Node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) status = acpi_ns_attach_object(new_node, obj_desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) obj_desc->common.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) /* Remove local reference to the object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) acpi_ut_remove_reference(obj_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) unlock_and_exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /* Save a handle to "_GPE", it is always present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (ACPI_SUCCESS(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) status = acpi_ns_get_node(NULL, "\\_GPE", ACPI_NS_NO_UPSEARCH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) &acpi_gbl_fadt_gpe_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * FUNCTION: acpi_ns_lookup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * PARAMETERS: scope_info - Current scope info block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * pathname - Search pathname, in internal format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * (as represented in the AML stream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * type - Type associated with name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * interpreter_mode - IMODE_LOAD_PASS2 => add name if not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * flags - Flags describing the search restrictions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * walk_state - Current state of the walk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * return_node - Where the Node is placed (if found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * or created successfully)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * DESCRIPTION: Find or enter the passed name in the name space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * Log an error if name not found in Exec mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * MUTEX: Assumes namespace is locked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) acpi_ns_lookup(union acpi_generic_state *scope_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) char *pathname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) acpi_object_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) acpi_interpreter_mode interpreter_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) u32 flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct acpi_walk_state *walk_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) struct acpi_namespace_node **return_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) char *path = pathname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) char *external_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct acpi_namespace_node *prefix_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct acpi_namespace_node *current_node = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct acpi_namespace_node *this_node = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) u32 num_segments;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) u32 num_carats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) acpi_name simple_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) acpi_object_type type_to_check_for;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) acpi_object_type this_search_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) u32 search_parent_flag = ACPI_NS_SEARCH_PARENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) u32 local_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) acpi_interpreter_mode local_interpreter_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) ACPI_FUNCTION_TRACE(ns_lookup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (!return_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return_ACPI_STATUS(AE_BAD_PARAMETER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) local_flags = flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) ~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_OVERRIDE_IF_FOUND |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ACPI_NS_SEARCH_PARENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) *return_node = ACPI_ENTRY_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) acpi_gbl_ns_lookup_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (!acpi_gbl_root_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return_ACPI_STATUS(AE_NO_NAMESPACE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* Get the prefix scope. A null scope means use the root scope */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if ((!scope_info) || (!scope_info->scope.node)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) "Null scope prefix, using root node (%p)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) acpi_gbl_root_node));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) prefix_node = acpi_gbl_root_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) prefix_node = scope_info->scope.node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (ACPI_GET_DESCRIPTOR_TYPE(prefix_node) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) ACPI_DESC_TYPE_NAMED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) ACPI_ERROR((AE_INFO, "%p is not a namespace node [%s]",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) prefix_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) acpi_ut_get_descriptor_name(prefix_node)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) return_ACPI_STATUS(AE_AML_INTERNAL);
^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) if (!(flags & ACPI_NS_PREFIX_IS_SCOPE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * This node might not be a actual "scope" node (such as a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) * Device/Method, etc.) It could be a Package or other object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * node. Backup up the tree to find the containing scope node.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) while (!acpi_ns_opens_scope(prefix_node->type) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) prefix_node->type != ACPI_TYPE_ANY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) prefix_node = prefix_node->parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) /* Save type. TBD: may be no longer necessary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) type_to_check_for = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * Begin examination of the actual pathname
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (!pathname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) /* A Null name_path is allowed and refers to the root */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) num_segments = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) this_node = acpi_gbl_root_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) path = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) "Null Pathname (Zero segments), Flags=%X\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) * Name pointer is valid (and must be in internal name format)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) * Check for scope prefixes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * As represented in the AML stream, a namepath consists of an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) * optional scope prefix followed by a name segment part.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) * If present, the scope prefix is either a Root Prefix (in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * which case the name is fully qualified), or one or more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * Parent Prefixes (in which case the name's scope is relative
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * to the current scope).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (*path == (u8) AML_ROOT_PREFIX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) /* Pathname is fully qualified, start from the root */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) this_node = acpi_gbl_root_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) search_parent_flag = ACPI_NS_NO_UPSEARCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) /* Point to name segment part */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) path++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) "Path is absolute from root [%p]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) this_node));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) /* Pathname is relative to current scope, start there */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) "Searching relative to prefix scope [%4.4s] (%p)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) acpi_ut_get_node_name(prefix_node),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) prefix_node));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * Handle multiple Parent Prefixes (carat) by just getting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) * the parent node for each prefix instance.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) this_node = prefix_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) num_carats = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) while (*path == (u8) AML_PARENT_PREFIX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) /* Name is fully qualified, no search rules apply */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) search_parent_flag = ACPI_NS_NO_UPSEARCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * Point past this prefix to the name segment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * part or the next Parent Prefix
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) path++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) /* Backup to the parent node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) num_carats++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) this_node = this_node->parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) if (!this_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) * Current scope has no parent scope. Externalize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) * the internal path for error message.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) acpi_ns_externalize_name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) (ACPI_UINT32_MAX, pathname, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) &external_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (ACPI_SUCCESS(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) ACPI_ERROR((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) "%s: Path has too many parent prefixes (^)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) external_path));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) ACPI_FREE(external_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) return_ACPI_STATUS(AE_NOT_FOUND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (search_parent_flag == ACPI_NS_NO_UPSEARCH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) "Search scope is [%4.4s], path has %u carat(s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) acpi_ut_get_node_name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) (this_node), num_carats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * Determine the number of ACPI name segments in this pathname.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * The segment part consists of either:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * - A Null name segment (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) * - A dual_name_prefix followed by two 4-byte name segments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) * - A multi_name_prefix followed by a byte indicating the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) * number of segments and the segments themselves.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) * - A single 4-byte name segment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) * Examine the name prefix opcode, if any, to determine the number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * segments.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) switch (*path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * Null name after a root or parent prefixes. We already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * have the correct target node and there are no name segments.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) num_segments = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) type = this_node->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) "Prefix-only Pathname (Zero name segments), Flags=%X\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) case AML_DUAL_NAME_PREFIX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /* More than one name_seg, search rules do not apply */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) search_parent_flag = ACPI_NS_NO_UPSEARCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) /* Two segments, point to first name segment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) num_segments = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) path++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) "Dual Pathname (2 segments, Flags=%X)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) case AML_MULTI_NAME_PREFIX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) /* More than one name_seg, search rules do not apply */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) search_parent_flag = ACPI_NS_NO_UPSEARCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) /* Extract segment count, point to first name segment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) path++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) num_segments = (u32) (u8) * path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) path++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) "Multi Pathname (%u Segments, Flags=%X)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) num_segments, flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * Not a Null name, no Dual or Multi prefix, hence there is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * only one name segment and Pathname is already pointing to it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) num_segments = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) "Simple Pathname (1 segment, Flags=%X)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ACPI_DEBUG_EXEC(acpi_ns_print_pathname(num_segments, path));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) * Search namespace for each segment of the name. Loop through and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * verify (or add to the namespace) each name segment.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * The object type is significant only at the last name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * segment. (We don't care about the types along the path, only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * the type of the final target object.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) this_search_type = ACPI_TYPE_ANY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) current_node = this_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) while (num_segments && current_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) num_segments--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (!num_segments) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) /* This is the last segment, enable typechecking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) this_search_type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) * Only allow automatic parent search (search rules) if the caller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) * requested it AND we have a single, non-fully-qualified name_seg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if ((search_parent_flag != ACPI_NS_NO_UPSEARCH) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) (flags & ACPI_NS_SEARCH_PARENT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) local_flags |= ACPI_NS_SEARCH_PARENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) /* Set error flag according to caller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) if (flags & ACPI_NS_ERROR_IF_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) local_flags |= ACPI_NS_ERROR_IF_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) /* Set override flag according to caller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (flags & ACPI_NS_OVERRIDE_IF_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) local_flags |= ACPI_NS_OVERRIDE_IF_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) /* Handle opcodes that create a new name_seg via a full name_path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) local_interpreter_mode = interpreter_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if ((flags & ACPI_NS_PREFIX_MUST_EXIST) && (num_segments > 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) /* Every element of the path must exist (except for the final name_seg) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) local_interpreter_mode = ACPI_IMODE_EXECUTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) /* Extract one ACPI name from the front of the pathname */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) ACPI_MOVE_32_TO_32(&simple_name, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /* Try to find the single (4 character) ACPI name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) acpi_ns_search_and_enter(simple_name, walk_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) current_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) local_interpreter_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) this_search_type, local_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) &this_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (status == AE_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) #if !defined ACPI_ASL_COMPILER /* Note: iASL reports this error by itself, not needed here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (flags & ACPI_NS_PREFIX_MUST_EXIST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) acpi_os_printf(ACPI_MSG_BIOS_ERROR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) "Object does not exist: %4.4s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) (char *)&simple_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) /* Name not found in ACPI namespace */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) "Name [%4.4s] not found in scope [%4.4s] %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) (char *)&simple_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) (char *)¤t_node->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) current_node));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) #ifdef ACPI_EXEC_APP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) if ((status == AE_ALREADY_EXISTS) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) (this_node->flags & ANOBJ_NODE_EARLY_INIT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) this_node->flags &= ~ANOBJ_NODE_EARLY_INIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) #ifdef ACPI_ASL_COMPILER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) * If this ACPI name already exists within the namespace as an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * external declaration, then mark the external as a conflicting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * declaration and proceed to process the current node as if it did
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * not exist in the namespace. If this node is not processed as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * normal, then it could cause improper namespace resolution
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) * by failing to open a new scope.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if (acpi_gbl_disasm_flag &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) (status == AE_ALREADY_EXISTS) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) ((this_node->flags & ANOBJ_IS_EXTERNAL) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) (walk_state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) && walk_state->opcode == AML_EXTERNAL_OP))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) this_node->flags &= ~ANOBJ_IS_EXTERNAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) this_node->type = (u8)this_search_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) if (walk_state->opcode != AML_EXTERNAL_OP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) acpi_dm_mark_external_conflict
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) (this_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) *return_node = this_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) /* More segments to follow? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) if (num_segments > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) * If we have an alias to an object that opens a scope (such as a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) * device or processor), we need to dereference the alias here so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) * that we can access any children of the original node (via the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) * remaining segments).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) if (this_node->type == ACPI_TYPE_LOCAL_ALIAS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) if (!this_node->object) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) return_ACPI_STATUS(AE_NOT_EXIST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) if (acpi_ns_opens_scope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) (((struct acpi_namespace_node *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) this_node->object)->type)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) this_node =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) (struct acpi_namespace_node *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) this_node->object;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) /* Special handling for the last segment (num_segments == 0) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) * Sanity typecheck of the target object:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) * If 1) This is the last segment (num_segments == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) * 2) And we are looking for a specific type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * (Not checking for TYPE_ANY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) * 3) Which is not an alias
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) * 4) Which is not a local type (TYPE_SCOPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * 5) And the type of target object is known (not TYPE_ANY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * 6) And target object does not match what we are looking for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) * Then we have a type mismatch. Just warn and ignore it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) if ((type_to_check_for != ACPI_TYPE_ANY) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) (type_to_check_for != ACPI_TYPE_LOCAL_ALIAS) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) (type_to_check_for != ACPI_TYPE_LOCAL_METHOD_ALIAS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) && (type_to_check_for != ACPI_TYPE_LOCAL_SCOPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) && (this_node->type != ACPI_TYPE_ANY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) && (this_node->type != type_to_check_for)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) /* Complain about a type mismatch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) ACPI_WARNING((AE_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) "NsLookup: Type mismatch on %4.4s (%s), searching for (%s)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) ACPI_CAST_PTR(char, &simple_name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) acpi_ut_get_type_name(this_node->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) type),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) acpi_ut_get_type_name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) (type_to_check_for)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) * If this is the last name segment and we are not looking for a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) * specific type, but the type of found object is known, use that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) * type to (later) see if it opens a scope.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) if (type == ACPI_TYPE_ANY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) type = this_node->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) /* Point to next name segment and make this node current */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) path += ACPI_NAMESEG_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) current_node = this_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) /* Always check if we need to open a new scope */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) if (!(flags & ACPI_NS_DONT_OPEN_SCOPE) && (walk_state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) * If entry is a type which opens a scope, push the new scope on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) * scope stack.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) if (acpi_ns_opens_scope(type)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) acpi_ds_scope_stack_push(this_node, type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) walk_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) #ifdef ACPI_EXEC_APP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) if (flags & ACPI_NS_EARLY_INIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) this_node->flags |= ANOBJ_NODE_EARLY_INIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) *return_node = this_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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