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 #include "qom/object.h"
  16
  17 typedef enum XenBlockVdevType {
  18     XEN_BLOCK_VDEV_TYPE_INVALID,
  19     XEN_BLOCK_VDEV_TYPE_DP,
  20     XEN_BLOCK_VDEV_TYPE_XVD,
  21     XEN_BLOCK_VDEV_TYPE_HD,
  22     XEN_BLOCK_VDEV_TYPE_SD,
  23     XEN_BLOCK_VDEV_TYPE__MAX
  24 } XenBlockVdevType;
  25
  26 typedef struct XenBlockVdev {
  27     XenBlockVdevType type;
  28     unsigned long disk;
  29     unsigned long partition;
  30     unsigned long number;
  31 } XenBlockVdev;
  32
  33
  34 typedef struct XenBlockProperties {
  35     XenBlockVdev vdev;
  36     BlockConf conf;
  37     unsigned int max_ring_page_order;
  38     IOThread *iothread;
  39 } XenBlockProperties;
  40
  41 typedef struct XenBlockDrive {
  42     char *id;
  43     char *node_name;
  44 } XenBlockDrive;
  45
  46 typedef struct XenBlockIOThread {
  47     char *id;
  48 } XenBlockIOThread;
  49
  50 struct XenBlockDevice {
  51     XenDevice xendev;
  52     XenBlockProperties props;
  53     const char *device_type;
  54     unsigned int info;
  55     XenBlockDataPlane *dataplane;
  56     XenBlockDrive *drive;
  57     XenBlockIOThread *iothread;
  58 };
  59 typedef struct XenBlockDevice XenBlockDevice;
  60
  61 typedef void (*XenBlockDeviceRealize)(XenBlockDevice *blockdev, Error **errp);
  62 typedef void (*XenBlockDeviceUnrealize)(XenBlockDevice *blockdev);
  63
  64 struct XenBlockDeviceClass {
  65     /*< private >*/
  66     XenDeviceClass parent_class;
  67     /*< public >*/
  68     XenBlockDeviceRealize realize;
  69     XenBlockDeviceUnrealize unrealize;
  70 };
  71
  72 #define TYPE_XEN_BLOCK_DEVICE  "xen-block"
  73 OBJECT_DECLARE_TYPE(XenBlockDevice, XenBlockDeviceClass, XEN_BLOCK_DEVICE)
  74
  75 struct XenDiskDevice {
  76     XenBlockDevice blockdev;
  77 };
  78
  79 #define TYPE_XEN_DISK_DEVICE  "xen-disk"
  80 OBJECT_DECLARE_SIMPLE_TYPE(XenDiskDevice, XEN_DISK_DEVICE)
  81
  82 struct XenCDRomDevice {
  83     XenBlockDevice blockdev;
  84 };
  85
  86 #define TYPE_XEN_CDROM_DEVICE  "xen-cdrom"
  87 OBJECT_DECLARE_SIMPLE_TYPE(XenCDRomDevice, XEN_CDROM_DEVICE)
  88
  89 #endif /* HW_XEN_BLOCK_H */