diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 4d15b49..185ab1d 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -363,6 +363,21 @@ config ACPI_HOTPLUG_SLOT_FAKE
 
 	  Pass parameter "fake_slot=0xf" to enable this function.
 
+config ACPI_HOTPLUG_DRIVER
+	tristate "System Device Hotplug Manager"
+	depends on ACPI_HOTPLUG
+	default m
+	help
+	  This driver implements a framework to manage system device hotplug
+	  slots, which could be used to support hotplug of processor, memory,
+	  PCI host bridge and computner node etc.
+
+	  It depends on ACPI container, processor, memory and PCI host bridge
+	  drivers to configure/unconfigure individual ACPI devices.
+
+	  To compile this driver as a module, choose M here:
+	  the module will be called acpihp_drv.
+
 config ACPI_CONTAINER
 	tristate "Container and Module Devices (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
diff --git a/drivers/acpi/hotplug/Makefile b/drivers/acpi/hotplug/Makefile
index 6e5daf6..6257047 100644
--- a/drivers/acpi/hotplug/Makefile
+++ b/drivers/acpi/hotplug/Makefile
@@ -9,3 +9,6 @@ obj-$(CONFIG_ACPI_HOTPLUG_SLOT)			+= acpihp_slot.o
 acpihp_slot-y					= slot.o
 acpihp_slot-y					+= slot_ej0.o
 acpihp_slot-$(CONFIG_ACPI_HOTPLUG_SLOT_FAKE)	+= slot_fake.o
+
+obj-$(CONFIG_ACPI_HOTPLUG_DRIVER)		+= acpihp_drv.o
+acpihp_drv-y					= drv_main.o
diff --git a/drivers/acpi/hotplug/acpihp_drv.h b/drivers/acpi/hotplug/acpihp_drv.h
new file mode 100644
index 0000000..769ee74
--- /dev/null
+++ b/drivers/acpi/hotplug/acpihp_drv.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2012 Huawei Tech. Co., Ltd.
+ * Copyright (C) 2012 Jiang Liu <jiang.liu@huawei.com>
+ * Copyright (C) 2012 Hanjun Guo <guohanjun@huawei.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * 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
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#ifndef	__ACPIHP_DRV_H__
+#define	__ACPIHP_DRV_H__
+
+struct acpihp_slot_drv {
+	struct mutex		op_mutex;
+};
+
+void acpihp_drv_get_data(struct acpihp_slot *slot,
+			 struct acpihp_slot_drv **data);
+int acpihp_drv_enumerate_devices(struct acpihp_slot *slot);
+void acpihp_drv_update_slot_state(struct acpihp_slot *slot);
+int acpihp_drv_update_slot_status(struct acpihp_slot *slot);
+
+#endif	/* __ACPIHP_DRV_H__ */
diff --git a/drivers/acpi/hotplug/drv_main.c b/drivers/acpi/hotplug/drv_main.c
new file mode 100644
index 0000000..8ab298a
--- /dev/null
+++ b/drivers/acpi/hotplug/drv_main.c
@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2012 Huawei Tech. Co., Ltd.
+ * Copyright (C) 2012 Jiang Liu <jiang.liu@huawei.com>
+ * Copyright (C) 2012 Hanjun Guo <guohanjun@huawei.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * 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 <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/kthread.h>
+#include <linux/delay.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_hotplug.h>
+#include "acpihp_drv.h"
+
+static struct class_interface acpihp_drv_interface;
+
+void acpihp_drv_get_data(struct acpihp_slot *slot,
+			 struct acpihp_slot_drv **data)
+{
+	*data = NULL;
+	acpihp_slot_get_drv_data(slot, &acpihp_drv_interface, (void **)data);
+}
+
+/* Update slot state according to state of devices connecting to it. */
+void acpihp_drv_update_slot_state(struct acpihp_slot *slot)
+{
+	enum acpihp_dev_type type;
+	enum acpihp_slot_state state;
+	struct klist_iter iter;
+	struct klist_node *ip;
+	struct acpihp_dev_node *dp;
+	bool connected = false;
+	bool configured = false;
+
+	if (!acpihp_slot_present(slot)) {
+		state = ACPIHP_SLOT_STATE_ABSENT;
+		goto out;
+	} else if (!acpihp_slot_powered(slot)) {
+		state = ACPIHP_SLOT_STATE_PRESENT;
+		goto out;
+	}
+
+	for (type = ACPIHP_DEV_TYPE_UNKNOWN;
+	     type < ACPIHP_DEV_TYPE_MAX && !configured;
+	     type++) {
+		klist_iter_init(&slot->dev_lists[type], &iter);
+		while ((ip = klist_next(&iter)) != NULL) {
+			connected = true;
+			dp = container_of(ip, struct acpihp_dev_node, node);
+			if (dp->state == DEVICE_STATE_CONFIGURED) {
+				configured = true;
+				break;
+			}
+		}
+		klist_iter_exit(&iter);
+	}
+
+	if (configured)
+		state = ACPIHP_SLOT_STATE_CONFIGURED;
+	else if (connected)
+		state = ACPIHP_SLOT_STATE_CONNECTED;
+	else
+		state = ACPIHP_SLOT_STATE_POWERED;
+
+out:
+	acpihp_slot_change_state(slot, state);
+}
+
+/* Update slot status according to status of devices connecting to it. */
+int acpihp_drv_update_slot_status(struct acpihp_slot *slot)
+{
+	int ret = 0;
+	enum acpihp_dev_type type;
+	struct klist_iter iter;
+	struct klist_node *ip;
+	struct acpihp_dev_node *np;
+	struct acpi_device *dev;
+	struct acpihp_dev_info *info;
+
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	for (type = ACPIHP_DEV_TYPE_CONTAINER;
+	     type <= ACPIHP_DEV_TYPE_HOST_BRIDGE; type++) {
+		klist_iter_init(&slot->dev_lists[type], &iter);
+		while ((ip = klist_next(&iter)) != NULL) {
+			np = container_of(ip, struct acpihp_dev_node, node);
+			dev = container_of(np->dev, struct acpi_device, dev);
+			ret = acpihp_dev_get_info(dev, info);
+			if (ret) {
+				ACPIHP_SLOT_DEBUG(slot,
+					"fails to get info about %s.\n",
+					dev_name(&dev->dev));
+				klist_iter_exit(&iter);
+				goto out;
+			}
+
+			if (info->status & ACPIHP_DEV_STATUS_FAULT)
+				acpihp_slot_set_flag(slot,
+						ACPIHP_SLOT_FLAG_FAULT);
+			if (info->status & ACPIHP_DEV_STATUS_IRREMOVABLE)
+				acpihp_slot_set_flag(slot,
+						ACPIHP_SLOT_FLAG_IRREMOVABLE);
+		}
+		klist_iter_exit(&iter);
+	}
+
+out:
+	kfree(info);
+
+	return ret;
+}
+EXPORT_SYMBOL(acpihp_drv_update_slot_status);
+
+/* Add ACPI device onto hotplug slot's device list */
+static acpi_status acpihp_drv_enum_device(struct acpi_device *dev, void *argp)
+{
+	int ret = -ENOMEM;
+	acpi_status rv = AE_ERROR;
+	enum acpihp_dev_type type;
+	enum acpihp_dev_state state;
+	struct acpihp_dev_info *info;
+	struct acpihp_slot *slot = (struct acpihp_slot *)argp;
+
+	if (acpihp_dev_get_type(dev->handle, &type)) {
+		ACPIHP_SLOT_DEBUG(slot, "fails to get device type of %s.\n",
+				  dev_name(&dev->dev));
+		return AE_ERROR;
+	} else if (type == ACPIHP_DEV_TYPE_MAX) {
+		/*
+		 * Some ACPI objects for IO devices, such as PCI/IDE etc, only
+		 * implement _ADR instead of _HID/_CID, skip them.
+		 */
+		return AE_CTRL_DEPTH;
+	}
+
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	if (info)
+		ret = acpihp_dev_get_info(dev, info);
+
+	if (!ret) {
+		if (info->status & ACPIHP_DEV_STATUS_STARTED)
+			state = DEVICE_STATE_CONFIGURED;
+		else
+			state = DEVICE_STATE_CONNECTED;
+
+		if (info->status & ACPIHP_DEV_STATUS_IRREMOVABLE)
+			acpihp_slot_set_flag(slot,
+					     ACPIHP_SLOT_FLAG_IRREMOVABLE);
+		if (info->status & ACPIHP_DEV_STATUS_FAULT)
+			acpihp_slot_set_flag(slot, ACPIHP_SLOT_FLAG_FAULT);
+
+		if (acpihp_slot_add_device(slot, type, state, &dev->dev)) {
+			ACPIHP_SLOT_DEBUG(slot, "fails to add device %s.\n",
+					  dev_name(&dev->dev));
+			acpihp_slot_set_flag(slot,
+					     ACPIHP_SLOT_FLAG_IRREMOVABLE);
+		} else
+			rv = AE_OK;
+	} else {
+		ACPIHP_SLOT_DEBUG(slot, "fails to query device info of %s.\n",
+				  dev_name(&dev->dev));
+		acpihp_slot_set_flag(slot, ACPIHP_SLOT_FLAG_IRREMOVABLE);
+	}
+
+	kfree(info);
+
+	return rv;
+}
+
+/*
+ * Enumerate all ACPI devices attached to the slot and add them onto slot's
+ * device lists.
+ */
+int acpihp_drv_enumerate_devices(struct acpihp_slot *slot)
+{
+	return acpihp_walk_devices(slot->handle, acpihp_drv_enum_device, slot);
+}
+
+static void acpihp_drv_remove_devices(struct acpihp_slot *slot)
+{
+	enum acpihp_dev_type type;
+
+	for (type = ACPIHP_DEV_TYPE_UNKNOWN; type < ACPIHP_DEV_TYPE_MAX; type++)
+		acpihp_remove_device_list(&slot->dev_lists[type]);
+}
+
+/* Handle ACPI device hotplug notifications */
+static void acpihp_drv_event_handler(acpi_handle handle, u32 event,
+				     void *context)
+{
+	/* TODO: handle ACPI hotplug events */
+}
+
+static acpi_status acpihp_drv_install_handler(struct acpihp_slot *slot)
+{
+	acpi_status status;
+
+	status = acpi_install_notify_handler(slot->handle, ACPI_SYSTEM_NOTIFY,
+					     acpihp_drv_event_handler, slot);
+	ACPIHP_SLOT_DEBUG(slot, "%s to install event handler.\n",
+			  ACPI_SUCCESS(status) ? "succeeds" : "fails");
+
+	return status;
+}
+
+static void acpihp_drv_uninstall_handler(struct acpihp_slot *slot)
+{
+	acpi_status status;
+
+	status = acpi_remove_notify_handler(slot->handle, ACPI_SYSTEM_NOTIFY,
+					    acpihp_drv_event_handler);
+	ACPIHP_SLOT_DEBUG(slot, "%s to uninstall event handler.\n",
+			  ACPI_SUCCESS(status) ? "succeeds" : "fails");
+}
+
+static int acpihp_drv_slot_add(struct device *dev, struct class_interface *intf)
+{
+	struct acpihp_slot_drv *drv_data;
+	struct acpihp_slot *slot = container_of(dev, struct acpihp_slot, dev);
+
+	/*
+	 * Try to hold a reference to the slot_ops structure to prevent
+	 * the platform specific enumerator driver from unloading.
+	 */
+	if (!slot->slot_ops || !try_module_get(slot->slot_ops->owner)) {
+		ACPIHP_SLOT_DEBUG(slot,
+				  "fails to get reference to slot_ops.\n");
+		return -EINVAL;
+	}
+
+	/* Install ACPI event notification handler */
+	if (ACPI_FAILURE(acpihp_drv_install_handler(slot))) {
+		ACPIHP_SLOT_DEBUG(slot, "fails to install event handler.\n");
+		module_put(slot->slot_ops->owner);
+		return -EBUSY;
+	}
+
+	/*
+	 * Enumerate all ACPI devices attached to the hotplug slot if
+	 * it has been already powered.
+	 */
+	if (!acpihp_slot_powered(slot))
+		ACPIHP_SLOT_DEBUG(slot, "is powered off.\n");
+	else if (acpihp_drv_enumerate_devices(slot))
+		acpihp_slot_set_flag(slot, ACPIHP_SLOT_FLAG_IRREMOVABLE);
+
+	acpihp_drv_update_slot_state(slot);
+	acpihp_drv_update_slot_status(slot);
+
+	drv_data = kzalloc(sizeof(*drv_data), GFP_KERNEL);
+	if (drv_data) {
+		mutex_init(&drv_data->op_mutex);
+	}
+	if (drv_data == NULL ||
+	    acpihp_slot_attach_drv_data(slot, intf, (void *)drv_data)) {
+		ACPIHP_SLOT_DEBUG(slot, "fails to attach driver data.\n");
+		acpihp_drv_remove_devices(slot);
+		module_put(slot->slot_ops->owner);
+		kfree(drv_data);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void acpihp_drv_intf_remove(struct device *dev,
+				  struct class_interface *intf)
+{
+	struct acpihp_slot_drv *drv_data = NULL;
+	struct acpihp_slot *slot =
+			container_of(dev, struct acpihp_slot, dev);
+
+	acpihp_drv_uninstall_handler(slot);
+	acpihp_drv_remove_devices(slot);
+	acpihp_slot_detach_drv_data(slot, intf, (void **)&drv_data);
+	if (drv_data != NULL)
+		kfree(drv_data);
+
+	module_put(slot->slot_ops->owner);
+}
+
+/*
+ * Class driver to bound to ACPI system device hotplug slot devices.
+ */
+static struct class_interface acpihp_drv_interface = {
+	.class		= &acpihp_slot_class,
+	.add_dev	= acpihp_drv_slot_add,
+	.remove_dev	= acpihp_drv_intf_remove,
+};
+
+static int __init acpihp_drv_init(void)
+{
+	int retval;
+
+	retval = acpihp_core_init();
+	if (retval) {
+		ACPIHP_DEBUG("fails to initialize ACPIHP core.\n");
+		return retval;
+	}
+
+	retval = class_interface_register(&acpihp_drv_interface);
+	if (retval) {
+		ACPIHP_DEBUG("fails to register ACPI hotplug slot driver.\n");
+		acpihp_core_fini();
+	}
+
+	return retval;
+}
+
+static void __exit acpihp_drv_exit(void)
+{
+	class_interface_unregister(&acpihp_drv_interface);
+	acpihp_core_fini();
+}
+
+module_init(acpihp_drv_init);
+module_exit(acpihp_drv_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Jiang Liu <jiang.liu@huawei.com>");
+MODULE_AUTHOR("Hanjun Guo <guohanjun@huawei.com>");
