qcow2: Order concurrent AIO requests on the same unallocated cluster
[qemu-kvm/fedora.git] / hw / scsi-disk.h
blobf42212bc22e46c7427869008874c417b1edd0a71
1 #ifndef SCSI_DISK_H
2 #define SCSI_DISK_H
4 /* scsi-disk.c */
5 enum scsi_reason {
6 SCSI_REASON_DONE, /* Command complete. */
7 SCSI_REASON_DATA /* Transfer complete, more data required. */
8 };
10 typedef struct SCSIDeviceState SCSIDeviceState;
11 typedef struct SCSIDevice SCSIDevice;
12 typedef void (*scsi_completionfn)(void *opaque, int reason, uint32_t tag,
13 uint32_t arg);
15 struct SCSIDevice
17 SCSIDeviceState *state;
18 void (*destroy)(SCSIDevice *s);
19 int32_t (*send_command)(SCSIDevice *s, uint32_t tag, uint8_t *buf,
20 int lun);
21 void (*read_data)(SCSIDevice *s, uint32_t tag);
22 int (*write_data)(SCSIDevice *s, uint32_t tag);
23 void (*cancel_io)(SCSIDevice *s, uint32_t tag);
24 uint8_t *(*get_buf)(SCSIDevice *s, uint32_t tag);
27 SCSIDevice *scsi_disk_init(BlockDriverState *bdrv, int tcq,
28 scsi_completionfn completion, void *opaque);
29 SCSIDevice *scsi_generic_init(BlockDriverState *bdrv, int tcq,
30 scsi_completionfn completion, void *opaque);
32 /* cdrom.c */
33 int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track);
34 int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num);
36 #endif