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/*

 * Virtio SCSI HBA

 *

 * Copyright IBM, Corp. 2010

 *

 * Authors:

 *  Stefan Hajnoczi    <stefanha@linux.vnet.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_SCSI_H

#define _QEMU_VIRTIO_SCSI_H

#include "hw/virtio/virtio.h"

#include "hw/pci/pci.h"

#include "hw/scsi/scsi.h"

#define TYPE_VIRTIO_SCSI "virtio-scsi"

#define VIRTIO_SCSI(obj) \

        OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI)

/* The ID for virtio_scsi */

#define VIRTIO_ID_SCSI  8

/* Feature Bits */

#define VIRTIO_SCSI_F_INOUT                    0

#define VIRTIO_SCSI_F_HOTPLUG                  1

#define VIRTIO_SCSI_F_CHANGE                   2

struct VirtIOSCSIConf {

    uint32_t num_queues;

    uint32_t max_sectors;

    uint32_t cmd_per_lun;

};

typedef struct VirtIOSCSI {

    VirtIODevice parent_obj;

    VirtIOSCSIConf conf;

    SCSIBus bus;

    uint32_t sense_size;

    uint32_t cdb_size;

    int resetting;

    bool events_dropped;

    VirtQueue *ctrl_vq;

    VirtQueue *event_vq;

    VirtQueue **cmd_vqs;

} VirtIOSCSI;

#define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _conf_field)                     \

    DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1),       \

    DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF),\

    DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128)

#define DEFINE_VIRTIO_SCSI_FEATURES(_state, _feature_field)                    \

    DEFINE_VIRTIO_COMMON_FEATURES(_state, _feature_field),                     \

    DEFINE_PROP_BIT("hotplug", _state, _feature_field, VIRTIO_SCSI_F_HOTPLUG,  \

                                                       true),                  \

    DEFINE_PROP_BIT("param_change", _state, _feature_field,                    \

                                            VIRTIO_SCSI_F_CHANGE, true)

#endif /* _QEMU_VIRTIO_SCSI_H */