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.h"
  14 #include "qemu-queue.h"
  15
  16 typedef enum {
  17     IF_NONE,
  18     IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
  19     IF_COUNT
  20 } BlockInterfaceType;
  21
  22 #define BLOCK_SERIAL_STRLEN 20
  23
  24 typedef struct DriveInfo {
  25     BlockDriverState *bdrv;
  26     char *id;
  27     const char *devaddr;
  28     BlockInterfaceType type;
  29     int bus;
  30     int unit;
  31     QemuOpts *opts;
  32     char serial[BLOCK_SERIAL_STRLEN + 1];
  33     QTAILQ_ENTRY(DriveInfo) next;
  34 } DriveInfo;
  35
  36 #define MAX_IDE_DEVS    2
  37 #define MAX_SCSI_DEVS   7
  38
  39 extern DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
  40 extern DriveInfo *drive_get_by_id(const char *id);
  41 extern int drive_get_max_bus(BlockInterfaceType type);
  42 extern void drive_uninit(DriveInfo *dinfo);
  43 extern const char *drive_get_serial(BlockDriverState *bdrv);
  44
  45 extern QemuOpts *drive_add(const char *file, const char *fmt, ...);
  46 extern DriveInfo *drive_init(QemuOpts *arg, int default_to_scsi,
  47                              int *fatal_error);
  48
  49 /* device-hotplug */
  50
  51 DriveInfo *add_init_drive(const char *opts);
  52
  53 void do_commit(Monitor *mon, const QDict *qdict);
  54 int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data);
  55 int do_block_set_passwd(Monitor *mon, const QDict *qdict, QObject **ret_data);
  56 int do_change_block(Monitor *mon, const char *device,
  57                     const char *filename, const char *fmt);
  58
  59 extern DriveInfo *extboot_drive;
  60
  61 #endif