1
#ifndef QEMU_HW_XEN_BACKEND_H
2
#define QEMU_HW_XEN_BACKEND_H 1
4
#include "xen_common.h"
8
/* ------------------------------------------------------------- */
10
#define XEN_BUFSIZE 1024
14
/* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */
15
#define DEVOPS_FLAG_NEED_GNTDEV 1
16
/* don't expect frontend doing correct state transitions (aka console quirk) */
17
#define DEVOPS_FLAG_IGNORE_STATE 2
22
void (*alloc)(struct XenDevice *xendev);
23
int (*init)(struct XenDevice *xendev);
24
int (*initialise)(struct XenDevice *xendev);
25
void (*connected)(struct XenDevice *xendev);
26
void (*event)(struct XenDevice *xendev);
27
void (*disconnect)(struct XenDevice *xendev);
28
int (*free)(struct XenDevice *xendev);
29
void (*backend_changed)(struct XenDevice *xendev, const char *node);
30
void (*frontend_changed)(struct XenDevice *xendev, const char *node);
40
enum xenbus_state be_state;
41
enum xenbus_state fe_state;
52
struct XenDevOps *ops;
53
QTAILQ_ENTRY(XenDevice) next;
56
/* ------------------------------------------------------------- */
60
extern struct xs_handle *xenstore;
61
extern const char *xen_protocol;
63
/* xenstore helper functions */
64
int xenstore_write_str(const char *base, const char *node, const char *val);
65
int xenstore_write_int(const char *base, const char *node, int ival);
66
char *xenstore_read_str(const char *base, const char *node);
67
int xenstore_read_int(const char *base, const char *node, int *ival);
69
int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val);
70
int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival);
71
char *xenstore_read_be_str(struct XenDevice *xendev, const char *node);
72
int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival);
73
char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node);
74
int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival);
76
const char *xenbus_strstate(enum xenbus_state state);
77
struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev);
78
void xen_be_check_state(struct XenDevice *xendev);
80
/* xen backend driver bits */
81
int xen_be_init(void);
82
int xen_be_register(const char *type, struct XenDevOps *ops);
83
int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
84
int xen_be_bind_evtchn(struct XenDevice *xendev);
85
void xen_be_unbind_evtchn(struct XenDevice *xendev);
86
int xen_be_send_notify(struct XenDevice *xendev);
87
void xen_be_printf(struct XenDevice *xendev, int msg_level, const char *fmt, ...)
90
/* actual backend drivers */
91
extern struct XenDevOps xen_console_ops; /* xen_console.c */
92
extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */
93
extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */
94
extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */
95
extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
97
void xen_init_display(int domid);
99
/* configuration (aka xenbus setup) */
100
void xen_config_cleanup(void);
101
int xen_config_dev_blk(DriveInfo *disk);
102
int xen_config_dev_nic(NICInfo *nic);
103
int xen_config_dev_vfb(int vdev, const char *type);
104
int xen_config_dev_vkbd(int vdev);
105
int xen_config_dev_console(int vdev);
107
#endif /* QEMU_HW_XEN_BACKEND_H */