db9ff46eeb
This patch adds create and destroy function for XenBlockDevice-s so that they can be created automatically when the Xen toolstack instantiates a new PV backend via xenstore. When the XenBlockDevice is created this way it is also necessary to create a 'drive' which matches the configuration that the Xen toolstack has written into xenstore. This is done by formulating the parameters necessary for each 'blockdev' layer of the drive and then using qmp_blockdev_add() to create the layers. Also, for compatibility with the legacy 'xen_disk' implementation, an iothread is automatically created for the new XenBlockDevice. This, like the driver layers, will be destroyed after the XenBlockDevice is unrealized. The legacy backend scan for 'qdisk' is removed by this patch, which makes the 'xen_disk' code is redundant. The code will be removed by a subsequent patch. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Reviewed-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2018 Citrix Systems Inc.
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#ifndef HW_XEN_BLOCK_H
|
|
#define HW_XEN_BLOCK_H
|
|
|
|
#include "hw/xen/xen-bus.h"
|
|
#include "hw/block/block.h"
|
|
#include "hw/block/dataplane/xen-block.h"
|
|
#include "sysemu/iothread.h"
|
|
|
|
typedef enum XenBlockVdevType {
|
|
XEN_BLOCK_VDEV_TYPE_INVALID,
|
|
XEN_BLOCK_VDEV_TYPE_DP,
|
|
XEN_BLOCK_VDEV_TYPE_XVD,
|
|
XEN_BLOCK_VDEV_TYPE_HD,
|
|
XEN_BLOCK_VDEV_TYPE_SD,
|
|
XEN_BLOCK_VDEV_TYPE__MAX
|
|
} XenBlockVdevType;
|
|
|
|
typedef struct XenBlockVdev {
|
|
XenBlockVdevType type;
|
|
unsigned long disk;
|
|
unsigned long partition;
|
|
unsigned long number;
|
|
} XenBlockVdev;
|
|
|
|
|
|
typedef struct XenBlockProperties {
|
|
XenBlockVdev vdev;
|
|
BlockConf conf;
|
|
unsigned int max_ring_page_order;
|
|
IOThread *iothread;
|
|
} XenBlockProperties;
|
|
|
|
typedef struct XenBlockDrive {
|
|
char *id;
|
|
char *node_name;
|
|
} XenBlockDrive;
|
|
|
|
typedef struct XenBlockIOThread {
|
|
char *id;
|
|
} XenBlockIOThread;
|
|
|
|
typedef struct XenBlockDevice {
|
|
XenDevice xendev;
|
|
XenBlockProperties props;
|
|
const char *device_type;
|
|
unsigned int info;
|
|
XenBlockDataPlane *dataplane;
|
|
XenBlockDrive *drive;
|
|
XenBlockIOThread *iothread;
|
|
} XenBlockDevice;
|
|
|
|
typedef void (*XenBlockDeviceRealize)(XenBlockDevice *blockdev, Error **errp);
|
|
typedef void (*XenBlockDeviceUnrealize)(XenBlockDevice *blockdev, Error **errp);
|
|
|
|
typedef struct XenBlockDeviceClass {
|
|
/*< private >*/
|
|
XenDeviceClass parent_class;
|
|
/*< public >*/
|
|
XenBlockDeviceRealize realize;
|
|
XenBlockDeviceUnrealize unrealize;
|
|
} XenBlockDeviceClass;
|
|
|
|
#define TYPE_XEN_BLOCK_DEVICE "xen-block"
|
|
#define XEN_BLOCK_DEVICE(obj) \
|
|
OBJECT_CHECK(XenBlockDevice, (obj), TYPE_XEN_BLOCK_DEVICE)
|
|
#define XEN_BLOCK_DEVICE_CLASS(class) \
|
|
OBJECT_CLASS_CHECK(XenBlockDeviceClass, (class), TYPE_XEN_BLOCK_DEVICE)
|
|
#define XEN_BLOCK_DEVICE_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(XenBlockDeviceClass, (obj), TYPE_XEN_BLOCK_DEVICE)
|
|
|
|
typedef struct XenDiskDevice {
|
|
XenBlockDevice blockdev;
|
|
} XenDiskDevice;
|
|
|
|
#define TYPE_XEN_DISK_DEVICE "xen-disk"
|
|
#define XEN_DISK_DEVICE(obj) \
|
|
OBJECT_CHECK(XenDiskDevice, (obj), TYPE_XEN_DISK_DEVICE)
|
|
|
|
typedef struct XenCDRomDevice {
|
|
XenBlockDevice blockdev;
|
|
} XenCDRomDevice;
|
|
|
|
#define TYPE_XEN_CDROM_DEVICE "xen-cdrom"
|
|
#define XEN_CDROM_DEVICE(obj) \
|
|
OBJECT_CHECK(XenCDRomDevice, (obj), TYPE_XEN_CDROM_DEVICE)
|
|
|
|
#endif /* HW_XEN_BLOCK_H */
|