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
  33 typedef struct XenBlockProperties {
  34     XenBlockVdev vdev;
  35     BlockConf conf;
  36     unsigned int max_ring_page_order;
  37     IOThread *iothread;
  38 } XenBlockProperties;
  39
  40 typedef struct XenBlockDrive {
  41     char *id;
  42     char *node_name;
  43 } XenBlockDrive;
  44
  45 typedef struct XenBlockIOThread {
  46     char *id;
  47 } XenBlockIOThread;
  48
  49 typedef struct XenBlockDevice {
  50     XenDevice xendev;
  51     XenBlockProperties props;
  52     const char *device_type;
  53     unsigned int info;
  54     XenBlockDataPlane *dataplane;
  55     XenBlockDrive *drive;
  56     XenBlockIOThread *iothread;
  57 } XenBlockDevice;
  58
  59 typedef void (*XenBlockDeviceRealize)(XenBlockDevice *blockdev, Error **errp);
  60 typedef void (*XenBlockDeviceUnrealize)(XenBlockDevice *blockdev, Error **errp);
  61
  62 typedef struct XenBlockDeviceClass {
  63     /*< private >*/
  64     XenDeviceClass parent_class;
  65     /*< public >*/
  66     XenBlockDeviceRealize realize;
  67     XenBlockDeviceUnrealize unrealize;
  68 } XenBlockDeviceClass;
  69
  70 #define TYPE_XEN_BLOCK_DEVICE  "xen-block"
  71 #define XEN_BLOCK_DEVICE(obj) \
  72      OBJECT_CHECK(XenBlockDevice, (obj), TYPE_XEN_BLOCK_DEVICE)
  73 #define XEN_BLOCK_DEVICE_CLASS(class) \
  74      OBJECT_CLASS_CHECK(XenBlockDeviceClass, (class), TYPE_XEN_BLOCK_DEVICE)
  75 #define XEN_BLOCK_DEVICE_GET_CLASS(obj) \
  76      OBJECT_GET_CLASS(XenBlockDeviceClass, (obj), TYPE_XEN_BLOCK_DEVICE)
  77
  78 typedef struct XenDiskDevice {
  79     XenBlockDevice blockdev;
  80 } XenDiskDevice;
  81
  82 #define TYPE_XEN_DISK_DEVICE  "xen-disk"
  83 #define XEN_DISK_DEVICE(obj) \
  84      OBJECT_CHECK(XenDiskDevice, (obj), TYPE_XEN_DISK_DEVICE)
  85
  86 typedef struct XenCDRomDevice {
  87     XenBlockDevice blockdev;
  88 } XenCDRomDevice;
  89
  90 #define TYPE_XEN_CDROM_DEVICE  "xen-cdrom"
  91 #define XEN_CDROM_DEVICE(obj) \
  92      OBJECT_CHECK(XenCDRomDevice, (obj), TYPE_XEN_CDROM_DEVICE)
  93
  94 #endif /* HW_XEN_BLOCK_H */