patch-2.4.0-test3 linux/drivers/acpi/dispatcher/dswload.c

• Lines: 601
• Date: Wed Jul 5 11:23:12 2000
• Orig file: v2.4.0-test2/linux/drivers/acpi/dispatcher/dswload.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test2/linux/drivers/acpi/dispatcher/dswload.c linux/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);
+}
+