patch-2.4.6 linux/drivers/acpi/ospm/busmgr/bmrequest.c

• Lines: 165
• Date: Wed Jun 20 17:47:40 2001
• Orig file: v2.4.5/linux/drivers/acpi/ospm/busmgr/bmrequest.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/ospm/busmgr/bmrequest.c linux/drivers/acpi/ospm/busmgr/bmrequest.c
@@ -0,0 +1,164 @@
+/******************************************************************************
+ *
+ * Module Name: bmrequest.c
+ *   $Revision: 12 $
+ *
+ *****************************************************************************/
+
+/*
+ *  Copyright (C) 2000, 2001 Andrew Grover
+ *
+ *  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 "bm.h"
+
+#define _COMPONENT		ACPI_BUS
+	MODULE_NAME		("bmrequest")
+
+
+/****************************************************************************
+ *                            External Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ *
+ * FUNCTION:    bm_generate_request
+ *
+ * PARAMETERS:  
+ *
+ * RETURN:      
+ *
+ * DESCRIPTION: 
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bm_generate_request (
+	BM_NODE			*node,
+	BM_REQUEST		*request)
+{
+	ACPI_STATUS		status = AE_OK;
+	BM_DEVICE		*device = NULL;
+
+	FUNCTION_TRACE("bm_generate_request");
+
+	if (!node || !request) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	device = &(node->device);
+
+	if (!BM_IS_DRIVER_CONTROL(device)) {
+		DEBUG_PRINT(ACPI_WARN, ("No driver installed for device [%02x].\n", device->handle));
+		return_ACPI_STATUS(AE_NOT_EXIST);
+	}
+
+	status = node->driver.request(request, node->driver.context);
+
+	return_ACPI_STATUS(status);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:    bm_request
+ *
+ * PARAMETERS:  
+ *
+ * RETURN:      
+ *
+ * DESCRIPTION: 
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bm_request (
+	BM_REQUEST              *request)
+{
+	ACPI_STATUS             status = AE_OK;
+	BM_NODE			*node = NULL;
+	BM_DEVICE		*device = NULL;
+
+	FUNCTION_TRACE("bm_request");
+
+	/*
+	 * Must have a valid request structure.
+	 */
+	if (!request) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	DEBUG_PRINT(ACPI_INFO, ("Received request for device [%02x] command [%02x].\n", request->handle, request->command));
+
+	/*
+	 * Resolve the node.
+	 */
+	status = bm_get_node(request->handle, 0, &node);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	device = &(node->device);
+
+	/*
+	 * Device-Specific Request?
+	 * ------------------------
+	 * If a device-specific command (>=0x80) forward this request to
+	 * the appropriate driver.
+	 */
+	if (request->command & BM_COMMAND_DEVICE_SPECIFIC) {
+		status = bm_generate_request(node, request);
+		return_ACPI_STATUS(status);
+	}
+
+	/*
+	 * Bus-Specific Requests:
+	 * ----------------------
+	 */
+	switch (request->command) {
+
+	case BM_COMMAND_GET_POWER_STATE:
+		status = bm_get_power_state(node);
+		if (ACPI_FAILURE(status)) {
+			break;
+		}
+		status = bm_copy_to_buffer(&(request->buffer), 
+			&(device->power.state), sizeof(BM_POWER_STATE));
+		break;
+
+	case BM_COMMAND_SET_POWER_STATE:
+	{
+		BM_POWER_STATE *power_state = NULL;
+
+		status = bm_cast_buffer(&(request->buffer), 
+			(void**)&power_state, sizeof(BM_POWER_STATE));
+		if (ACPI_FAILURE(status)) {
+			break;
+		}
+		status = bm_set_power_state(node, *power_state);
+	}
+		break;
+
+	default:
+		status = AE_SUPPORT;
+		request->status = AE_SUPPORT;
+		break;
+	}
+
+	return_ACPI_STATUS(status);
+}