LXR qemu/include/sysemu/blockdev.h

   1/*
   2 * QEMU host block devices
   3 *
   4 * Copyright (c) 2003-2008 Fabrice Bellard
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or
   7 * later.  See the COPYING file in the top-level directory.
   8 */
   9
  10#ifndef BLOCKDEV_H
  11#define BLOCKDEV_H
  12
  13#include "block/block.h"
  14#include "qemu/queue.h"
  15
  16typedef enum {
  17    IF_DEFAULT = -1,            /* for use with drive_add() only */
  18    /*
  19     * IF_NONE must be zero, because we want MachineClass member
  20     * block_default_type to default-initialize to IF_NONE
  21     */
  22    IF_NONE = 0,
  23    IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
  24    IF_COUNT
  25} BlockInterfaceType;
  26
  27struct DriveInfo {
  28    BlockInterfaceType type;
  29    int bus;
  30    int unit;
  31    int auto_del;               /* see blockdev_mark_auto_del() */
  32    bool is_default;            /* Added by default_drive() ?  */
  33    int media_cd;
  34    QemuOpts *opts;
  35    QTAILQ_ENTRY(DriveInfo) next;
  36};
  37
  38/*
  39 * Global state (GS) API. These functions run under the BQL.
  40 *
  41 * See include/block/block-global-state.h for more information about
  42 * the GS API.
  43 */
  44
  45void blockdev_mark_auto_del(BlockBackend *blk);
  46void blockdev_auto_del(BlockBackend *blk);
  47
  48DriveInfo *blk_legacy_dinfo(BlockBackend *blk);
  49DriveInfo *blk_set_legacy_dinfo(BlockBackend *blk, DriveInfo *dinfo);
  50BlockBackend *blk_by_legacy_dinfo(DriveInfo *dinfo);
  51
  52void override_max_devs(BlockInterfaceType type, int max_devs);
  53
  54DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
  55void drive_check_orphaned(void);
  56DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
  57int drive_get_max_bus(BlockInterfaceType type);
  58
  59QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
  60                    const char *optstr);
  61DriveInfo *drive_new(QemuOpts *arg, BlockInterfaceType block_default_type,
  62                     Error **errp);
  63
  64#endif
  65