patch-2.4.6 linux/drivers/acpi/utilities/uteval.c

• 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);
+}