1#ifndef QEMU_HW_XEN_BACKEND_H
2#define QEMU_HW_XEN_BACKEND_H 1
3
4#include "hw/xen/xen_common.h"
5#include "sysemu/sysemu.h"
6#include "net/net.h"
7
8
9
10#define XEN_BUFSIZE 1024
11
12struct XenDevice;
13
14
15#define DEVOPS_FLAG_NEED_GNTDEV 1
16
17#define DEVOPS_FLAG_IGNORE_STATE 2
18
19struct XenDevOps {
20 size_t size;
21 uint32_t flags;
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);
31};
32
33struct XenDevice {
34 const char *type;
35 int dom;
36 int dev;
37 char name[64];
38 int debug;
39
40 enum xenbus_state be_state;
41 enum xenbus_state fe_state;
42 int online;
43 char be[XEN_BUFSIZE];
44 char *fe;
45 char *protocol;
46 int remote_port;
47 int local_port;
48
49 xenevtchn_handle *evtchndev;
50 xengnttab_handle *gnttabdev;
51
52 struct XenDevOps *ops;
53 QTAILQ_ENTRY(XenDevice) next;
54};
55
56
57
58
59extern xc_interface *xen_xc;
60extern xenforeignmemory_handle *xen_fmem;
61extern struct xs_handle *xenstore;
62extern const char *xen_protocol;
63
64
65int xenstore_write_str(const char *base, const char *node, const char *val);
66int xenstore_write_int(const char *base, const char *node, int ival);
67int xenstore_write_int64(const char *base, const char *node, int64_t ival);
68char *xenstore_read_str(const char *base, const char *node);
69int xenstore_read_int(const char *base, const char *node, int *ival);
70
71int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val);
72int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival);
73int xenstore_write_be_int64(struct XenDevice *xendev, const char *node, int64_t ival);
74char *xenstore_read_be_str(struct XenDevice *xendev, const char *node);
75int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival);
76char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node);
77int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival);
78int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
79int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node, uint64_t *uval);
80
81const char *xenbus_strstate(enum xenbus_state state);
82struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev);
83void xen_be_check_state(struct XenDevice *xendev);
84
85
86int xen_be_init(void);
87int xen_be_register(const char *type, struct XenDevOps *ops);
88int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
89int xen_be_bind_evtchn(struct XenDevice *xendev);
90void xen_be_unbind_evtchn(struct XenDevice *xendev);
91int xen_be_send_notify(struct XenDevice *xendev);
92void xen_be_printf(struct XenDevice *xendev, int msg_level, const char *fmt, ...)
93 GCC_FMT_ATTR(3, 4);
94
95
96extern struct XenDevOps xen_console_ops;
97extern struct XenDevOps xen_kbdmouse_ops;
98extern struct XenDevOps xen_framebuffer_ops;
99extern struct XenDevOps xen_blkdev_ops;
100extern struct XenDevOps xen_netdev_ops;
101
102void xen_init_display(int domid);
103
104
105void xen_config_cleanup(void);
106int xen_config_dev_blk(DriveInfo *disk);
107int xen_config_dev_nic(NICInfo *nic);
108int xen_config_dev_vfb(int vdev, const char *type);
109int xen_config_dev_vkbd(int vdev);
110int xen_config_dev_console(int vdev);
111
112#endif
113