1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
#ifndef QEMU_HW_XEN_PVDEV_H
#define QEMU_HW_XEN_PVDEV_H
#include "hw/xen/xen_backend_ops.h"
#include "hw/xen/xen_common.h"
/* ------------------------------------------------------------- */
#define XEN_BUFSIZE 1024
struct XenLegacyDevice;
/* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */
#define DEVOPS_FLAG_NEED_GNTDEV 1
/* don't expect frontend doing correct state transitions (aka console quirk) */
#define DEVOPS_FLAG_IGNORE_STATE 2
struct XenDevOps {
size_t size;
uint32_t flags;
void (*alloc)(struct XenLegacyDevice *xendev);
int (*init)(struct XenLegacyDevice *xendev);
int (*initialise)(struct XenLegacyDevice *xendev);
void (*connected)(struct XenLegacyDevice *xendev);
void (*event)(struct XenLegacyDevice *xendev);
void (*disconnect)(struct XenLegacyDevice *xendev);
int (*free)(struct XenLegacyDevice *xendev);
void (*backend_changed)(struct XenLegacyDevice *xendev,
const char *node);
void (*frontend_changed)(struct XenLegacyDevice *xendev,
const char *node);
int (*backend_register)(void);
};
struct XenLegacyDevice {
DeviceState qdev;
const char *type;
int dom;
int dev;
char name[64];
int debug;
enum xenbus_state be_state;
enum xenbus_state fe_state;
int online;
char be[XEN_BUFSIZE];
char *fe;
char *protocol;
int remote_port;
int local_port;
xenevtchn_handle *evtchndev;
xengnttab_handle *gnttabdev;
struct XenDevOps *ops;
QTAILQ_ENTRY(XenLegacyDevice) next;
};
/* ------------------------------------------------------------- */
/* xenstore helper functions */
int xenstore_write_str(const char *base, const char *node, const char *val);
int xenstore_write_int(const char *base, const char *node, int ival);
int xenstore_write_int64(const char *base, const char *node, int64_t ival);
char *xenstore_read_str(const char *base, const char *node);
int xenstore_read_int(const char *base, const char *node, int *ival);
int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
void xenstore_update(void *unused);
const char *xenbus_strstate(enum xenbus_state state);
void xen_pv_evtchn_event(void *opaque);
void xen_pv_insert_xendev(struct XenLegacyDevice *xendev);
void xen_pv_del_xendev(struct XenLegacyDevice *xendev);
struct XenLegacyDevice *xen_pv_find_xendev(const char *type, int dom, int dev);
void xen_pv_unbind_evtchn(struct XenLegacyDevice *xendev);
int xen_pv_send_notify(struct XenLegacyDevice *xendev);
void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level,
const char *fmt, ...) G_GNUC_PRINTF(3, 4);
#endif /* QEMU_HW_XEN_PVDEV_H */
|
