f574fa8b07
This fix the broken aliases, by renaming the devices.
So: * virtio-blk => virtio-blk-device.
* virtio-balloon => virtio-balloon-device.
* virtio-scsi => virtio-scsi-device.
All virtio-*-pci, virtio-*-s390, virtio-*-ccw didn't change.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-id: 1365501888-14602-1-git-send-email-fred.konrad@greensocs.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
/*
|
|
* Virtio Block Device
|
|
*
|
|
* Copyright IBM, Corp. 2007
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef _QEMU_VIRTIO_BLK_H
|
|
#define _QEMU_VIRTIO_BLK_H
|
|
|
|
#include "hw/virtio/virtio.h"
|
|
#include "hw/block/block.h"
|
|
|
|
#define TYPE_VIRTIO_BLK "virtio-blk-device"
|
|
#define VIRTIO_BLK(obj) \
|
|
OBJECT_CHECK(VirtIOBlock, (obj), TYPE_VIRTIO_BLK)
|
|
|
|
/* from Linux's linux/virtio_blk.h */
|
|
|
|
/* The ID for virtio_block */
|
|
#define VIRTIO_ID_BLOCK 2
|
|
|
|
/* Feature bits */
|
|
#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
|
|
#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */
|
|
#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */
|
|
#define VIRTIO_BLK_F_GEOMETRY 4 /* Indicates support of legacy geometry */
|
|
#define VIRTIO_BLK_F_RO 5 /* Disk is read-only */
|
|
#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/
|
|
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
|
|
/* #define VIRTIO_BLK_F_IDENTIFY 8 ATA IDENTIFY supported, DEPRECATED */
|
|
#define VIRTIO_BLK_F_WCE 9 /* write cache enabled */
|
|
#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
|
|
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* write cache configurable */
|
|
|
|
#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
|
|
|
|
struct virtio_blk_config
|
|
{
|
|
uint64_t capacity;
|
|
uint32_t size_max;
|
|
uint32_t seg_max;
|
|
uint16_t cylinders;
|
|
uint8_t heads;
|
|
uint8_t sectors;
|
|
uint32_t blk_size;
|
|
uint8_t physical_block_exp;
|
|
uint8_t alignment_offset;
|
|
uint16_t min_io_size;
|
|
uint32_t opt_io_size;
|
|
uint8_t wce;
|
|
} QEMU_PACKED;
|
|
|
|
/* These two define direction. */
|
|
#define VIRTIO_BLK_T_IN 0
|
|
#define VIRTIO_BLK_T_OUT 1
|
|
|
|
/* This bit says it's a scsi command, not an actual read or write. */
|
|
#define VIRTIO_BLK_T_SCSI_CMD 2
|
|
|
|
/* Flush the volatile write cache */
|
|
#define VIRTIO_BLK_T_FLUSH 4
|
|
|
|
/* return the device ID string */
|
|
#define VIRTIO_BLK_T_GET_ID 8
|
|
|
|
/* Barrier before this op. */
|
|
#define VIRTIO_BLK_T_BARRIER 0x80000000
|
|
|
|
/* This is the first element of the read scatter-gather list. */
|
|
struct virtio_blk_outhdr
|
|
{
|
|
/* VIRTIO_BLK_T* */
|
|
uint32_t type;
|
|
/* io priority. */
|
|
uint32_t ioprio;
|
|
/* Sector (ie. 512 byte offset) */
|
|
uint64_t sector;
|
|
};
|
|
|
|
#define VIRTIO_BLK_S_OK 0
|
|
#define VIRTIO_BLK_S_IOERR 1
|
|
#define VIRTIO_BLK_S_UNSUPP 2
|
|
|
|
/* This is the last element of the write scatter-gather list */
|
|
struct virtio_blk_inhdr
|
|
{
|
|
unsigned char status;
|
|
};
|
|
|
|
/* SCSI pass-through header */
|
|
struct virtio_scsi_inhdr
|
|
{
|
|
uint32_t errors;
|
|
uint32_t data_len;
|
|
uint32_t sense_len;
|
|
uint32_t residual;
|
|
};
|
|
|
|
struct VirtIOBlkConf
|
|
{
|
|
BlockConf conf;
|
|
char *serial;
|
|
uint32_t scsi;
|
|
uint32_t config_wce;
|
|
uint32_t data_plane;
|
|
};
|
|
|
|
struct VirtIOBlockDataPlane;
|
|
|
|
typedef struct VirtIOBlock {
|
|
VirtIODevice parent_obj;
|
|
BlockDriverState *bs;
|
|
VirtQueue *vq;
|
|
void *rq;
|
|
QEMUBH *bh;
|
|
BlockConf *conf;
|
|
VirtIOBlkConf blk;
|
|
unsigned short sector_mask;
|
|
VMChangeStateEntry *change;
|
|
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
|
|
struct VirtIOBlockDataPlane *dataplane;
|
|
#endif
|
|
} VirtIOBlock;
|
|
|
|
#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
|
|
DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
|
|
|
|
#ifdef __linux__
|
|
#define DEFINE_VIRTIO_BLK_PROPERTIES(_state, _field) \
|
|
DEFINE_BLOCK_PROPERTIES(_state, _field.conf), \
|
|
DEFINE_BLOCK_CHS_PROPERTIES(_state, _field.conf), \
|
|
DEFINE_PROP_STRING("serial", _state, _field.serial), \
|
|
DEFINE_PROP_BIT("config-wce", _state, _field.config_wce, 0, true), \
|
|
DEFINE_PROP_BIT("scsi", _state, _field.scsi, 0, true)
|
|
#else
|
|
#define DEFINE_VIRTIO_BLK_PROPERTIES(_state, _field) \
|
|
DEFINE_BLOCK_PROPERTIES(_state, _field.conf), \
|
|
DEFINE_BLOCK_CHS_PROPERTIES(_state, _field.conf), \
|
|
DEFINE_PROP_STRING("serial", _state, _field.serial), \
|
|
DEFINE_PROP_BIT("config-wce", _state, _field.config_wce, 0, true)
|
|
#endif /* __linux__ */
|
|
|
|
void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk);
|
|
|
|
#endif
|