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14#ifndef QEMU_VIRTIO_SCSI_H
15#define QEMU_VIRTIO_SCSI_H
16
17
18#define VIRTIO_SCSI_CDB_SIZE 0
19#define VIRTIO_SCSI_SENSE_SIZE 0
20#include "standard-headers/linux/virtio_scsi.h"
21#include "hw/virtio/virtio.h"
22#include "hw/pci/pci.h"
23#include "hw/scsi/scsi.h"
24#include "sysemu/iothread.h"
25
26#define TYPE_VIRTIO_SCSI_COMMON "virtio-scsi-common"
27#define VIRTIO_SCSI_COMMON(obj) \
28 OBJECT_CHECK(VirtIOSCSICommon, (obj), TYPE_VIRTIO_SCSI_COMMON)
29
30#define TYPE_VIRTIO_SCSI "virtio-scsi-device"
31#define VIRTIO_SCSI(obj) \
32 OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI)
33
34#define VIRTIO_SCSI_VQ_SIZE 128
35#define VIRTIO_SCSI_MAX_CHANNEL 0
36#define VIRTIO_SCSI_MAX_TARGET 255
37#define VIRTIO_SCSI_MAX_LUN 16383
38
39typedef struct virtio_scsi_cmd_req VirtIOSCSICmdReq;
40typedef struct virtio_scsi_cmd_resp VirtIOSCSICmdResp;
41typedef struct virtio_scsi_ctrl_tmf_req VirtIOSCSICtrlTMFReq;
42typedef struct virtio_scsi_ctrl_tmf_resp VirtIOSCSICtrlTMFResp;
43typedef struct virtio_scsi_ctrl_an_req VirtIOSCSICtrlANReq;
44typedef struct virtio_scsi_ctrl_an_resp VirtIOSCSICtrlANResp;
45typedef struct virtio_scsi_event VirtIOSCSIEvent;
46typedef struct virtio_scsi_config VirtIOSCSIConfig;
47
48struct VirtIOSCSIConf {
49 uint32_t num_queues;
50 uint32_t max_sectors;
51 uint32_t cmd_per_lun;
52 char *vhostfd;
53 char *wwpn;
54 uint32_t boot_tpgt;
55 IOThread *iothread;
56};
57
58struct VirtIOSCSI;
59
60typedef struct VirtIOSCSICommon {
61 VirtIODevice parent_obj;
62 VirtIOSCSIConf conf;
63
64 uint32_t sense_size;
65 uint32_t cdb_size;
66 VirtQueue *ctrl_vq;
67 VirtQueue *event_vq;
68 VirtQueue **cmd_vqs;
69} VirtIOSCSICommon;
70
71typedef struct VirtIOSCSI {
72 VirtIOSCSICommon parent_obj;
73
74 SCSIBus bus;
75 int resetting;
76 bool events_dropped;
77
78
79 AioContext *ctx;
80
81 bool dataplane_started;
82 bool dataplane_starting;
83 bool dataplane_stopping;
84 bool dataplane_fenced;
85 uint32_t host_features;
86} VirtIOSCSI;
87
88typedef struct VirtIOSCSIReq {
89
90
91
92
93 VirtQueueElement elem;
94
95 VirtIOSCSI *dev;
96 VirtQueue *vq;
97 QEMUSGList qsgl;
98 QEMUIOVector resp_iov;
99
100 union {
101
102 QTAILQ_ENTRY(VirtIOSCSIReq) next;
103
104
105 int remaining;
106 };
107
108 SCSIRequest *sreq;
109 size_t resp_size;
110 enum SCSIXferMode mode;
111 union {
112 VirtIOSCSICmdResp cmd;
113 VirtIOSCSICtrlTMFResp tmf;
114 VirtIOSCSICtrlANResp an;
115 VirtIOSCSIEvent event;
116 } resp;
117 union {
118 VirtIOSCSICmdReq cmd;
119 VirtIOSCSICtrlTMFReq tmf;
120 VirtIOSCSICtrlANReq an;
121 } req;
122} VirtIOSCSIReq;
123
124void virtio_scsi_common_realize(DeviceState *dev, Error **errp,
125 VirtIOHandleOutput ctrl, VirtIOHandleOutput evt,
126 VirtIOHandleOutput cmd);
127
128void virtio_scsi_common_unrealize(DeviceState *dev, Error **errp);
129void virtio_scsi_handle_event_vq(VirtIOSCSI *s, VirtQueue *vq);
130void virtio_scsi_handle_cmd_vq(VirtIOSCSI *s, VirtQueue *vq);
131void virtio_scsi_handle_ctrl_vq(VirtIOSCSI *s, VirtQueue *vq);
132void virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq, VirtIOSCSIReq *req);
133void virtio_scsi_free_req(VirtIOSCSIReq *req);
134void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
135 uint32_t event, uint32_t reason);
136
137void virtio_scsi_dataplane_setup(VirtIOSCSI *s, Error **errp);
138int virtio_scsi_dataplane_start(VirtIODevice *s);
139void virtio_scsi_dataplane_stop(VirtIODevice *s);
140
141#endif
142