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1 /*
2  * Virtio SCSI HBA
3  *
4  * Copyright IBM, Corp. 2010
5  *
6  * Authors:
7  *  Stefan Hajnoczi    <[email protected]>
8  *
9  * This work is licensed under the terms of the GNU GPL, version 2.  See
10  * the COPYING file in the top-level directory.
11  *
12  */
13
14 #ifndef _QEMU_VIRTIO_SCSI_H
15 #define _QEMU_VIRTIO_SCSI_H
16
17 #include "hw/virtio.h"
18 #include "hw/pci/pci.h"
19 #include "hw/scsi.h"
20
21 /* The ID for virtio_scsi */
22 #define VIRTIO_ID_SCSI  8
23
24 /* Feature Bits */
25 #define VIRTIO_SCSI_F_INOUT                    0
26 #define VIRTIO_SCSI_F_HOTPLUG                  1
27 #define VIRTIO_SCSI_F_CHANGE                   2
28
29 struct VirtIOSCSIConf {
30     uint32_t num_queues;
31     uint32_t max_sectors;
32     uint32_t cmd_per_lun;
33 };
34
35 typedef struct VirtIOSCSI {
36     VirtIODevice vdev;
37     DeviceState *qdev;
38     VirtIOSCSIConf conf;
39
40     SCSIBus bus;
41     uint32_t sense_size;
42     uint32_t cdb_size;
43     int resetting;
44     bool events_dropped;
45     VirtQueue *ctrl_vq;
46     VirtQueue *event_vq;
47     VirtQueue **cmd_vqs;
48 } VirtIOSCSI;
49
50 #define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _features_field, _conf_field) \
51     DEFINE_VIRTIO_COMMON_FEATURES(_state, _features_field), \
52     DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \
53     DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF), \
54     DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128), \
55     DEFINE_PROP_BIT("hotplug", _state, _features_field, VIRTIO_SCSI_F_HOTPLUG, true), \
56     DEFINE_PROP_BIT("param_change", _state, _features_field, VIRTIO_SCSI_F_CHANGE, true)
57
58 #endif /* _QEMU_VIRTIO_SCSI_H */
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