include/hw/xen/xen-block.h

   1 /*
   2  * Copyright (c) 2018  Citrix Systems Inc.
   3  *
   4  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #ifndef HW_XEN_BLOCK_H
   9 #define HW_XEN_BLOCK_H
  10
  11 #include "hw/xen/xen-bus.h"
  12 #include "hw/block/block.h"
  13 #include "hw/block/dataplane/xen-block.h"
  14 #include "sysemu/iothread.h"
  15
  16 typedef enum XenBlockVdevType {
  17     XEN_BLOCK_VDEV_TYPE_INVALID,
  18     XEN_BLOCK_VDEV_TYPE_DP,
  19     XEN_BLOCK_VDEV_TYPE_XVD,
  20     XEN_BLOCK_VDEV_TYPE_HD,
  21     XEN_BLOCK_VDEV_TYPE_SD,
  22     XEN_BLOCK_VDEV_TYPE__MAX
  23 } XenBlockVdevType;
  24
  25 typedef struct XenBlockVdev {
  26     XenBlockVdevType type;
  27     unsigned long disk;
  28     unsigned long partition;
  29     unsigned long number;
  30 } XenBlockVdev;
  31
  32 typedef struct XenBlockProperties {
  33     XenBlockVdev vdev;
  34     BlockConf conf;
  35     unsigned int max_ring_page_order;
  36     IOThread *iothread;
  37 } XenBlockProperties;
  38
  39 typedef struct XenBlockDevice {
  40     XenDevice xendev;
  41     XenBlockProperties props;
  42     const char *device_type;
  43     unsigned int info;
  44     XenBlockDataPlane *dataplane;
  45 } XenBlockDevice;
  46
  47 typedef void (*XenBlockDeviceRealize)(XenBlockDevice *blockdev, Error **errp);
  48 typedef void (*XenBlockDeviceUnrealize)(XenBlockDevice *blockdev, Error **errp);
  49
  50 typedef struct XenBlockDeviceClass {
  51     /*< private >*/
  52     XenDeviceClass parent_class;
  53     /*< public >*/
  54     XenBlockDeviceRealize realize;
  55     XenBlockDeviceUnrealize unrealize;
  56 } XenBlockDeviceClass;
  57
  58 #define TYPE_XEN_BLOCK_DEVICE  "xen-block"
  59 #define XEN_BLOCK_DEVICE(obj) \
  60      OBJECT_CHECK(XenBlockDevice, (obj), TYPE_XEN_BLOCK_DEVICE)
  61 #define XEN_BLOCK_DEVICE_CLASS(class) \
  62      OBJECT_CLASS_CHECK(XenBlockDeviceClass, (class), TYPE_XEN_BLOCK_DEVICE)
  63 #define XEN_BLOCK_DEVICE_GET_CLASS(obj) \
  64      OBJECT_GET_CLASS(XenBlockDeviceClass, (obj), TYPE_XEN_BLOCK_DEVICE)
  65
  66 typedef struct XenDiskDevice {
  67     XenBlockDevice blockdev;
  68 } XenDiskDevice;
  69
  70 #define TYPE_XEN_DISK_DEVICE  "xen-disk"
  71 #define XEN_DISK_DEVICE(obj) \
  72      OBJECT_CHECK(XenDiskDevice, (obj), TYPE_XEN_DISK_DEVICE)
  73
  74 typedef struct XenCDRomDevice {
  75     XenBlockDevice blockdev;
  76 } XenCDRomDevice;
  77
  78 #define TYPE_XEN_CDROM_DEVICE  "xen-cdrom"
  79 #define XEN_CDROM_DEVICE(obj) \
  80      OBJECT_CHECK(XenCDRomDevice, (obj), TYPE_XEN_CDROM_DEVICE)
  81
  82 #endif /* HW_XEN_BLOCK_H */