summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/dispatcher/dswload.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/dispatcher/dswload.c')
-rw-r--r--drivers/acpi/dispatcher/dswload.c600
1 files changed, 600 insertions, 0 deletions
diff --git a/drivers/acpi/dispatcher/dswload.c b/drivers/acpi/dispatcher/dswload.c
new file mode 100644
index 000000000..bfb54593f
--- /dev/null
+++ b/drivers/acpi/dispatcher/dswload.c
@@ -0,0 +1,600 @@
+
+/******************************************************************************
+ *
+ * Module Name: dswload - Dispatcher namespace load callbacks
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 R. Byron Moore
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+#include "acpi.h"
+#include "parser.h"
+#include "amlcode.h"
+#include "dispatch.h"
+#include "interp.h"
+#include "namesp.h"
+#include "events.h"
+
+
+#define _COMPONENT DISPATCHER
+ MODULE_NAME ("dswload");
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: Acpi_ds_load1_begin_op
+ *
+ * PARAMETERS: Walk_state - Current state of the parse tree walk
+ * Op - Op that has been just been reached in the
+ * walk; Arguments have not been evaluated yet.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Descending callback used during the loading of ACPI tables.
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+acpi_ds_load1_begin_op (
+ ACPI_WALK_STATE *walk_state,
+ ACPI_GENERIC_OP *op)
+{
+ ACPI_NAMED_OBJECT *new_entry;
+ ACPI_STATUS status;
+ OBJECT_TYPE_INTERNAL data_type;
+
+
+ /* We are only interested in opcodes that have an associated name */
+
+ if (!acpi_ps_is_named_op (op->opcode)) {
+ return AE_OK;
+ }
+
+
+ /* Check if this object has already been installed in the namespace */
+
+ if (op->acpi_named_object) {
+ return AE_OK;
+ }
+
+ /* Map the raw opcode into an internal object type */
+
+ data_type = acpi_ds_map_named_opcode_to_data_type (op->opcode);
+
+ /* Attempt to type a NAME opcode by examining the argument */
+
+ /* TBD: [Investigate] is this the right place to do this? */
+
+ if (op->opcode == AML_NAME_OP) {
+ if (op->value.arg) {
+
+ data_type = acpi_ds_map_opcode_to_data_type ((op->value.arg)->opcode,
+ NULL);
+ }
+ }
+
+
+ /*
+ * Enter the named type into the internal namespace. We enter the name
+ * as we go downward in the parse tree. Any necessary subobjects that involve
+ * arguments to the opcode must be created as we go back up the parse tree later.
+ */
+ status = acpi_ns_lookup (walk_state->scope_info,
+ (char *) &((ACPI_NAMED_OP *)op)->name,
+ data_type, IMODE_LOAD_PASS1,
+ NS_NO_UPSEARCH, walk_state, &(new_entry));
+
+ if (ACPI_SUCCESS (status)) {
+ /*
+ * Put the NTE in the "op" object that the parser uses, so we
+ * can get it again quickly when this scope is closed
+ */
+ op->acpi_named_object = new_entry;
+ }
+
+ return (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: Acpi_ds_load1_end_op
+ *
+ * PARAMETERS: Walk_state - Current state of the parse tree walk
+ * Op - Op that has been just been completed in the
+ * walk; Arguments have now been evaluated.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Ascending callback used during the loading of the namespace,
+ * both control methods and everything else.
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+acpi_ds_load1_end_op (
+ ACPI_WALK_STATE *walk_state,
+ ACPI_GENERIC_OP *op)
+{
+ OBJECT_TYPE_INTERNAL data_type;
+
+
+ /* We are only interested in opcodes that have an associated name */
+
+ if (!acpi_ps_is_named_op (op->opcode)) {
+ return AE_OK;
+ }
+
+ /* TBD: [Investigate] can this be removed? */
+
+ if (op->opcode == AML_SCOPE_OP) {
+ if (((ACPI_NAMED_OP *)op)->name == -1) {
+ return AE_OK;
+ }
+ }
+
+
+ data_type = acpi_ds_map_named_opcode_to_data_type (op->opcode);
+
+ /* Pop the scope stack */
+
+ if (acpi_ns_opens_scope (data_type)) {
+
+ acpi_ds_scope_stack_pop (walk_state);
+ }
+
+ return AE_OK;
+
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: Acpi_ds_load2_begin_op
+ *
+ * PARAMETERS: Walk_state - Current state of the parse tree walk
+ * Op - Op that has been just been reached in the
+ * walk; Arguments have not been evaluated yet.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Descending callback used during the loading of ACPI tables.
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+acpi_ds_load2_begin_op (
+ ACPI_WALK_STATE *walk_state,
+ ACPI_GENERIC_OP *op)
+{
+ ACPI_NAMED_OBJECT *new_entry;
+ ACPI_STATUS status;
+ OBJECT_TYPE_INTERNAL data_type;
+ char *buffer_ptr;
+ void *original = NULL;
+
+
+ /* We only care about Namespace opcodes here */
+
+ if (!acpi_ps_is_namespace_op (op->opcode) &&
+ op->opcode != AML_NAMEPATH_OP)
+ {
+ return AE_OK;
+ }
+
+
+ /*
+ * Get the name we are going to enter or lookup in the namespace
+ */
+ if (op->opcode == AML_NAMEPATH_OP) {
+ /* For Namepath op , get the path string */
+
+ buffer_ptr = op->value.string;
+ if (!buffer_ptr) {
+ /* No name, just exit */
+
+ return AE_OK;
+ }
+ }
+
+ else {
+ /* Get name from the op */
+
+ buffer_ptr = (char *) &((ACPI_NAMED_OP *)op)->name;
+ }
+
+
+ /* Map the raw opcode into an internal object type */
+
+ data_type = acpi_ds_map_named_opcode_to_data_type (op->opcode);
+
+
+ if (op->opcode == AML_DEF_FIELD_OP ||
+ op->opcode == AML_BANK_FIELD_OP ||
+ op->opcode == AML_INDEX_FIELD_OP)
+ {
+ new_entry = NULL;
+ status = AE_OK;
+ }
+
+ else if (op->opcode == AML_NAMEPATH_OP) {
+ /*
+ * The Name_path is an object reference to an existing object. Don't enter the
+ * name into the namespace, but look it up for use later
+ */
+ status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr,
+ data_type, IMODE_EXECUTE,
+ NS_SEARCH_PARENT, walk_state,
+ &(new_entry));
+ }
+
+ else {
+ if (op->acpi_named_object) {
+ original = op->acpi_named_object;
+ new_entry = op->acpi_named_object;
+
+ if (acpi_ns_opens_scope (data_type)) {
+ status = acpi_ds_scope_stack_push (new_entry->child_table,
+ data_type,
+ walk_state);
+ if (ACPI_FAILURE (status)) {
+ return (status);
+ }
+
+ }
+ return AE_OK;
+ }
+
+ /*
+ * Enter the named type into the internal namespace. We enter the name
+ * as we go downward in the parse tree. Any necessary subobjects that involve
+ * arguments to the opcode must be created as we go back up the parse tree later.
+ */
+ status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr,
+ data_type, IMODE_EXECUTE,
+ NS_NO_UPSEARCH, walk_state,
+ &(new_entry));
+ }
+
+ if (ACPI_SUCCESS (status)) {
+ /*
+ * Put the NTE in the "op" object that the parser uses, so we
+ * can get it again quickly when this scope is closed
+ */
+ op->acpi_named_object = new_entry;
+
+ }
+
+
+ return (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION: Acpi_ds_load2_end_op
+ *
+ * PARAMETERS: Walk_state - Current state of the parse tree walk
+ * Op - Op that has been just been completed in the
+ * walk; Arguments have now been evaluated.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Ascending callback used during the loading of the namespace,
+ * both control methods and everything else.
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+acpi_ds_load2_end_op (
+ ACPI_WALK_STATE *walk_state,
+ ACPI_GENERIC_OP *op)
+{
+ ACPI_STATUS status = AE_OK;
+ OBJECT_TYPE_INTERNAL data_type;
+ ACPI_NAMED_OBJECT *entry;
+ ACPI_GENERIC_OP *arg;
+ ACPI_NAMED_OBJECT *new_entry;
+
+
+ if (!acpi_ps_is_namespace_object_op (op->opcode)) {
+ return AE_OK;
+ }
+
+ if (op->opcode == AML_SCOPE_OP) {
+ if (((ACPI_NAMED_OP *)op)->name == -1) {
+ return AE_OK;
+ }
+ }
+
+
+ data_type = acpi_ds_map_named_opcode_to_data_type (op->opcode);
+
+ /*
+ * Get the NTE/name from the earlier lookup
+ * (It was saved in the *op structure)
+ */
+ entry = op->acpi_named_object;
+
+ /*
+ * Put the NTE on the object stack (Contains the ACPI Name of
+ * this object)
+ */
+
+ walk_state->operands[0] = (void *) entry;
+ walk_state->num_operands = 1;
+
+ /* Pop the scope stack */
+
+ if (acpi_ns_opens_scope (data_type)) {
+
+ acpi_ds_scope_stack_pop (walk_state);
+ }
+
+
+ /*
+ * Named operations are as follows:
+ *
+ * AML_SCOPE
+ * AML_DEVICE
+ * AML_THERMALZONE
+ * AML_METHOD
+ * AML_POWERRES
+ * AML_PROCESSOR
+ * AML_FIELD
+ * AML_INDEXFIELD
+ * AML_BANKFIELD
+ * AML_NAMEDFIELD
+ * AML_NAME
+ * AML_ALIAS
+ * AML_MUTEX
+ * AML_EVENT
+ * AML_OPREGION
+ * AML_CREATEFIELD
+ * AML_CREATEBITFIELD
+ * AML_CREATEBYTEFIELD
+ * AML_CREATEWORDFIELD
+ * AML_CREATEDWORDFIELD
+ * AML_METHODCALL
+ */
+
+
+ /* Decode the opcode */
+
+ arg = op->value.arg;
+
+ switch (op->opcode)
+ {
+
+ case AML_CREATE_FIELD_OP:
+ case AML_BIT_FIELD_OP:
+ case AML_BYTE_FIELD_OP:
+ case AML_WORD_FIELD_OP:
+ case AML_DWORD_FIELD_OP:
+
+ /* Get the Name_string argument */
+
+ if (op->opcode == AML_CREATE_FIELD_OP) {
+ arg = acpi_ps_get_arg (op, 3);
+ }
+ else {
+ /* Create Bit/Byte/Word/Dword field */
+
+ arg = acpi_ps_get_arg (op, 2);
+ }
+
+ /*
+ * Enter the Name_string into the namespace
+ */
+
+ status = acpi_ns_lookup (walk_state->scope_info,
+ arg->value.string,
+ INTERNAL_TYPE_DEF_ANY,
+ IMODE_LOAD_PASS1,
+ NS_NO_UPSEARCH | NS_DONT_OPEN_SCOPE,
+ walk_state, &(new_entry));
+
+ if (ACPI_SUCCESS (status)) {
+ /* We could put the returned object (NTE) on the object stack for later, but
+ * for now, we will put it in the "op" object that the parser uses, so we
+ * can get it again at the end of this scope
+ */
+ op->acpi_named_object = new_entry;
+ }
+
+ break;
+
+
+ case AML_METHODCALL_OP:
+
+ /*
+ * Lookup the method name and save the NTE
+ */
+
+ status = acpi_ns_lookup (walk_state->scope_info, arg->value.string,
+ ACPI_TYPE_ANY, IMODE_LOAD_PASS2,
+ NS_SEARCH_PARENT | NS_DONT_OPEN_SCOPE,
+ walk_state, &(new_entry));
+
+ if (ACPI_SUCCESS (status)) {
+
+/* has name already been resolved by here ??*/
+
+ /* TBD: [Restructure] Make sure that what we found is indeed a method! */
+ /* We didn't search for a method on purpose, to see if the name would resolve! */
+
+ /* We could put the returned object (NTE) on the object stack for later, but
+ * for now, we will put it in the "op" object that the parser uses, so we
+ * can get it again at the end of this scope
+ */
+ op->acpi_named_object = new_entry;
+ }
+
+
+ break;
+
+
+ case AML_PROCESSOR_OP:
+
+ /* Nothing to do other than enter object into namespace */
+
+ status = acpi_aml_exec_create_processor (op, (ACPI_HANDLE) entry);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ break;
+
+
+ case AML_POWER_RES_OP:
+
+ /* Nothing to do other than enter object into namespace */
+
+ status = acpi_aml_exec_create_power_resource (op, (ACPI_HANDLE) entry);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ break;
+
+
+ case AML_THERMAL_ZONE_OP:
+
+ /* Nothing to do other than enter object into namespace */
+
+ break;
+
+
+ case AML_DEF_FIELD_OP:
+
+ arg = op->value.arg;
+
+ status = acpi_ds_create_field (op,
+ (ACPI_HANDLE) arg->acpi_named_object,
+ walk_state);
+ break;
+
+
+ case AML_INDEX_FIELD_OP:
+
+ arg = op->value.arg;
+
+ status = acpi_ds_create_index_field (op,
+ (ACPI_HANDLE) arg->acpi_named_object,
+ walk_state);
+ break;
+
+
+ case AML_BANK_FIELD_OP:
+
+ arg = op->value.arg;
+ status = acpi_ds_create_bank_field (op,
+ (ACPI_HANDLE) arg->acpi_named_object,
+ walk_state);
+ break;
+
+
+ /*
+ * Method_op Pkg_length Names_string Method_flags Term_list
+ */
+ case AML_METHOD_OP:
+
+ if (!entry->object) {
+ status = acpi_aml_exec_create_method (((ACPI_DEFERRED_OP *) op)->body,
+ ((ACPI_DEFERRED_OP *) op)->body_length,
+ arg->value.integer, (ACPI_HANDLE) entry);
+ }
+
+ break;
+
+
+ case AML_MUTEX_OP:
+
+ status = acpi_ds_create_operands (walk_state, arg);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ status = acpi_aml_exec_create_mutex (walk_state);
+ break;
+
+
+ case AML_EVENT_OP:
+
+ status = acpi_ds_create_operands (walk_state, arg);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ status = acpi_aml_exec_create_event (walk_state);
+ break;
+
+
+ case AML_REGION_OP:
+
+
+ /*
+ * The Op_region is not fully parsed at this time. Only valid argument is the Space_id.
+ * (We must save the address of the AML of the address and length operands)
+ */
+
+ status = acpi_aml_exec_create_region (((ACPI_DEFERRED_OP *) op)->body,
+ ((ACPI_DEFERRED_OP *) op)->body_length,
+ arg->value.integer, walk_state);
+
+ break;
+
+
+ /* Namespace Modifier Opcodes */
+
+ case AML_ALIAS_OP:
+
+ status = acpi_ds_create_operands (walk_state, arg);
+ if (ACPI_FAILURE (status)) {
+ goto cleanup;
+ }
+
+ status = acpi_aml_exec_create_alias (walk_state);
+ break;
+
+
+ case AML_NAME_OP:
+
+ status = acpi_ds_create_named_object (walk_state, entry, op);
+
+ break;
+
+
+ case AML_NAMEPATH_OP:
+
+ break;
+
+
+ default:
+ break;
+ }
+
+
+cleanup:
+ /* Remove the NTE pushed at the very beginning */
+ acpi_ds_obj_stack_pop (1, walk_state);
+ return (status);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 08:29:20 +0000