mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 20:19:44 +00:00
b804e8a62a
The previous patch moved virtual css bridge and bus out from virtio-ccw, but kept the direct reference of virtio-ccw specific unplug function inside css-bridge.c. To make the virtual css bus and bridge useful for non-virtio devices, this introduces a common unplug function pointer "unplug" to call specific virtio-ccw unplug parts. Thus, the tight coupling to virtio-ccw can be removed. This unplug pointer is a member of CCWDeviceClass, which is introduced as an abstract device layer called "ccw-device". This layer is between DeviceState and specific devices which are plugged in virtual css bus, like virtio-ccw device. The specific unplug handlers should be assigned to "unplug" during initialization. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Reviewed-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
|
|
* Common device infrastructure for devices in the virtual css
|
|
*
|
|
* Copyright 2016 IBM Corp.
|
|
* Author(s): Jing Liu <liujbjl@linux.vnet.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or (at
|
|
* your option) any later version. See the COPYING file in the top-level
|
|
* directory.
|
|
*/
|
|
|
|
#ifndef HW_S390X_CCW_DEVICE_H
|
|
#define HW_S390X_CCW_DEVICE_H
|
|
#include "qom/object.h"
|
|
#include "hw/qdev-core.h"
|
|
#include "hw/s390x/css.h"
|
|
|
|
typedef struct CcwDevice {
|
|
DeviceState parent_obj;
|
|
SubchDev *sch;
|
|
/* <cssid>.<ssid>.<device number> */
|
|
CssDevId bus_id;
|
|
} CcwDevice;
|
|
|
|
typedef struct CCWDeviceClass {
|
|
DeviceClass parent_class;
|
|
void (*unplug)(HotplugHandler *, DeviceState *, Error **);
|
|
} CCWDeviceClass;
|
|
|
|
static inline CcwDevice *to_ccw_dev_fast(DeviceState *d)
|
|
{
|
|
return container_of(d, CcwDevice, parent_obj);
|
|
}
|
|
|
|
#define TYPE_CCW_DEVICE "ccw-device"
|
|
|
|
#define CCW_DEVICE(obj) OBJECT_CHECK(CcwDevice, (obj), TYPE_CCW_DEVICE)
|
|
#define CCW_DEVICE_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(CCWDeviceClass, (obj), TYPE_CCW_DEVICE)
|
|
#define CCW_DEVICE_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(CCWDeviceClass, (klass), TYPE_CCW_DEVICE)
|
|
|
|
#endif
|