b6af8926fb
...and wire in the dataplane. This patch adds the remaining code to make the xen-block XenDevice functional. The parameters that a block frontend expects to find are populated in the backend xenstore area, and the 'ring-ref' and 'event-channel' values specified in the frontend xenstore area are mapped/bound and used to set up the dataplane. 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>
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
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* Copyright (c) 2018 Citrix Systems Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef HW_XEN_BLOCK_H
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#define HW_XEN_BLOCK_H
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#include "hw/xen/xen-bus.h"
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#include "hw/block/block.h"
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#include "hw/block/dataplane/xen-block.h"
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#include "sysemu/iothread.h"
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typedef enum XenBlockVdevType {
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XEN_BLOCK_VDEV_TYPE_INVALID,
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XEN_BLOCK_VDEV_TYPE_DP,
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XEN_BLOCK_VDEV_TYPE_XVD,
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XEN_BLOCK_VDEV_TYPE_HD,
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XEN_BLOCK_VDEV_TYPE_SD,
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XEN_BLOCK_VDEV_TYPE__MAX
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} XenBlockVdevType;
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typedef struct XenBlockVdev {
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XenBlockVdevType type;
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unsigned long disk;
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unsigned long partition;
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unsigned long number;
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} XenBlockVdev;
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typedef struct XenBlockProperties {
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XenBlockVdev vdev;
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BlockConf conf;
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unsigned int max_ring_page_order;
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IOThread *iothread;
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} XenBlockProperties;
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typedef struct XenBlockDevice {
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XenDevice xendev;
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XenBlockProperties props;
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const char *device_type;
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unsigned int info;
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XenBlockDataPlane *dataplane;
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} XenBlockDevice;
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typedef void (*XenBlockDeviceRealize)(XenBlockDevice *blockdev, Error **errp);
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typedef void (*XenBlockDeviceUnrealize)(XenBlockDevice *blockdev, Error **errp);
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typedef struct XenBlockDeviceClass {
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/*< private >*/
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XenDeviceClass parent_class;
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/*< public >*/
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XenBlockDeviceRealize realize;
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XenBlockDeviceUnrealize unrealize;
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} XenBlockDeviceClass;
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#define TYPE_XEN_BLOCK_DEVICE "xen-block"
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#define XEN_BLOCK_DEVICE(obj) \
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OBJECT_CHECK(XenBlockDevice, (obj), TYPE_XEN_BLOCK_DEVICE)
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#define XEN_BLOCK_DEVICE_CLASS(class) \
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OBJECT_CLASS_CHECK(XenBlockDeviceClass, (class), TYPE_XEN_BLOCK_DEVICE)
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#define XEN_BLOCK_DEVICE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(XenBlockDeviceClass, (obj), TYPE_XEN_BLOCK_DEVICE)
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typedef struct XenDiskDevice {
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XenBlockDevice blockdev;
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} XenDiskDevice;
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#define TYPE_XEN_DISK_DEVICE "xen-disk"
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#define XEN_DISK_DEVICE(obj) \
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OBJECT_CHECK(XenDiskDevice, (obj), TYPE_XEN_DISK_DEVICE)
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typedef struct XenCDRomDevice {
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XenBlockDevice blockdev;
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} XenCDRomDevice;
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#define TYPE_XEN_CDROM_DEVICE "xen-cdrom"
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#define XEN_CDROM_DEVICE(obj) \
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OBJECT_CHECK(XenCDRomDevice, (obj), TYPE_XEN_CDROM_DEVICE)
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#endif /* HW_XEN_BLOCK_H */
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