patch-2.4.6 linux/drivers/acpi/utilities/uteval.c
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- Lines: 309
- Date:
Wed Jun 20 17:47:40 2001
- Orig file:
v2.4.5/linux/drivers/acpi/utilities/uteval.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/utilities/uteval.c linux/drivers/acpi/utilities/uteval.c
@@ -0,0 +1,308 @@
+/******************************************************************************
+ *
+ * Module Name: uteval - Object evaluation
+ * $Revision: 27 $
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000, 2001 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 "acnamesp.h"
+#include "acinterp.h"
+
+
+#define _COMPONENT ACPI_UTILITIES
+ MODULE_NAME ("uteval")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: Acpi_ut_evaluate_numeric_object
+ *
+ * PARAMETERS: *Object_name - Object name to be evaluated
+ * Device_node - Node for the device
+ * *Address - Where the value is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: evaluates a numeric namespace object for a selected device
+ * and stores results in *Address.
+ *
+ * NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ut_evaluate_numeric_object (
+ NATIVE_CHAR *object_name,
+ ACPI_NAMESPACE_NODE *device_node,
+ ACPI_INTEGER *address)
+{
+ ACPI_OPERAND_OBJECT *obj_desc;
+ ACPI_STATUS status;
+
+
+ /* Execute the method */
+
+ status = acpi_ns_evaluate_relative (device_node, object_name, NULL, &obj_desc);
+ if (ACPI_FAILURE (status)) {
+
+ return (status);
+ }
+
+
+ /* Did we get a return object? */
+
+ if (!obj_desc) {
+ return (AE_TYPE);
+ }
+
+ /* Is the return object of the correct type? */
+
+ if (obj_desc->common.type != ACPI_TYPE_INTEGER) {
+ status = AE_TYPE;
+ }
+ else {
+ /*
+ * Since the structure is a union, setting any field will set all
+ * of the variables in the union
+ */
+ *address = obj_desc->integer.value;
+ }
+
+ /* On exit, we must delete the return object */
+
+ acpi_ut_remove_reference (obj_desc);
+
+ return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: Acpi_ut_execute_HID
+ *
+ * PARAMETERS: Device_node - Node for the device
+ * *Hid - Where the HID is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Executes the _HID control method that returns the hardware
+ * ID of the device.
+ *
+ * NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ut_execute_HID (
+ ACPI_NAMESPACE_NODE *device_node,
+ ACPI_DEVICE_ID *hid)
+{
+ ACPI_OPERAND_OBJECT *obj_desc;
+ ACPI_STATUS status;
+
+
+ /* Execute the method */
+
+ status = acpi_ns_evaluate_relative (device_node,
+ METHOD_NAME__HID, NULL, &obj_desc);
+ if (ACPI_FAILURE (status)) {
+
+
+ return (status);
+ }
+
+ /* Did we get a return object? */
+
+ if (!obj_desc) {
+ return (AE_TYPE);
+ }
+
+ /*
+ * A _HID can return either a Number (32 bit compressed EISA ID) or
+ * a string
+ */
+ if ((obj_desc->common.type != ACPI_TYPE_INTEGER) &&
+ (obj_desc->common.type != ACPI_TYPE_STRING)) {
+ status = AE_TYPE;
+ }
+
+ else {
+ if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
+ /* Convert the Numeric HID to string */
+
+ acpi_ex_eisa_id_to_string ((u32) obj_desc->integer.value, hid->buffer);
+ }
+
+ else {
+ /* Copy the String HID from the returned object */
+
+ STRNCPY(hid->buffer, obj_desc->string.pointer, sizeof(hid->buffer));
+ }
+ }
+
+
+ /* On exit, we must delete the return object */
+
+ acpi_ut_remove_reference (obj_desc);
+
+ return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: Acpi_ut_execute_UID
+ *
+ * PARAMETERS: Device_node - Node for the device
+ * *Uid - Where the UID is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Executes the _UID control method that returns the hardware
+ * ID of the device.
+ *
+ * NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ut_execute_UID (
+ ACPI_NAMESPACE_NODE *device_node,
+ ACPI_DEVICE_ID *uid)
+{
+ ACPI_OPERAND_OBJECT *obj_desc;
+ ACPI_STATUS status;
+
+
+ PROC_NAME ("Ut_execute_UID");
+
+
+ /* Execute the method */
+
+ status = acpi_ns_evaluate_relative (device_node,
+ METHOD_NAME__UID, NULL, &obj_desc);
+ if (ACPI_FAILURE (status)) {
+
+
+ return (status);
+ }
+
+ /* Did we get a return object? */
+
+ if (!obj_desc) {
+ return (AE_TYPE);
+ }
+
+ /*
+ * A _UID can return either a Number (32 bit compressed EISA ID) or
+ * a string
+ */
+ if ((obj_desc->common.type != ACPI_TYPE_INTEGER) &&
+ (obj_desc->common.type != ACPI_TYPE_STRING)) {
+ status = AE_TYPE;
+ }
+
+ else {
+ if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
+ /* Convert the Numeric UID to string */
+
+ acpi_ex_unsigned_integer_to_string (obj_desc->integer.value, uid->buffer);
+ }
+
+ else {
+ /* Copy the String UID from the returned object */
+
+ STRNCPY(uid->buffer, obj_desc->string.pointer, sizeof(uid->buffer));
+ }
+ }
+
+
+ /* On exit, we must delete the return object */
+
+ acpi_ut_remove_reference (obj_desc);
+
+ return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: Acpi_ut_execute_STA
+ *
+ * PARAMETERS: Device_node - Node for the device
+ * *Flags - Where the status flags are returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Executes _STA for selected device and stores results in
+ * *Flags.
+ *
+ * NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ut_execute_STA (
+ ACPI_NAMESPACE_NODE *device_node,
+ u32 *flags)
+{
+ ACPI_OPERAND_OBJECT *obj_desc;
+ ACPI_STATUS status;
+
+
+ /* Execute the method */
+
+ status = acpi_ns_evaluate_relative (device_node,
+ METHOD_NAME__STA, NULL, &obj_desc);
+ if (AE_NOT_FOUND == status) {
+ *flags = 0x0F;
+ status = AE_OK;
+ }
+
+
+ else /* success */ {
+ /* Did we get a return object? */
+
+ if (!obj_desc) {
+ return (AE_TYPE);
+ }
+
+ /* Is the return object of the correct type? */
+
+ if (obj_desc->common.type != ACPI_TYPE_INTEGER) {
+ status = AE_TYPE;
+ }
+
+ else {
+ /* Extract the status flags */
+
+ *flags = (u32) obj_desc->integer.value;
+ }
+
+ /* On exit, we must delete the return object */
+
+ acpi_ut_remove_reference (obj_desc);
+ }
+
+ return (status);
+}
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