1 #ifndef QEMU_HW_XEN_BACKEND_H
2 #define QEMU_HW_XEN_BACKEND_H
4 #include "hw/xen/xen_common.h"
5 #include "sysemu/sysemu.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
);
31 int (*backend_register
)(void);
41 enum xenbus_state be_state
;
42 enum xenbus_state fe_state
;
50 xenevtchn_handle
*evtchndev
;
51 xengnttab_handle
*gnttabdev
;
53 struct XenDevOps
*ops
;
54 QTAILQ_ENTRY(XenDevice
) next
;
57 /* ------------------------------------------------------------- */
60 extern xc_interface
*xen_xc
;
61 extern xenforeignmemory_handle
*xen_fmem
;
62 extern struct xs_handle
*xenstore
;
63 extern const char *xen_protocol
;
64 extern DeviceState
*xen_sysdev
;
66 /* xenstore helper functions */
67 int xenstore_mkdir(char *path
, int p
);
68 int xenstore_write_str(const char *base
, const char *node
, const char *val
);
69 int xenstore_write_int(const char *base
, const char *node
, int ival
);
70 int xenstore_write_int64(const char *base
, const char *node
, int64_t ival
);
71 char *xenstore_read_str(const char *base
, const char *node
);
72 int xenstore_read_int(const char *base
, const char *node
, int *ival
);
74 int xenstore_write_be_str(struct XenDevice
*xendev
, const char *node
, const char *val
);
75 int xenstore_write_be_int(struct XenDevice
*xendev
, const char *node
, int ival
);
76 int xenstore_write_be_int64(struct XenDevice
*xendev
, const char *node
, int64_t ival
);
77 char *xenstore_read_be_str(struct XenDevice
*xendev
, const char *node
);
78 int xenstore_read_be_int(struct XenDevice
*xendev
, const char *node
, int *ival
);
79 char *xenstore_read_fe_str(struct XenDevice
*xendev
, const char *node
);
80 int xenstore_read_fe_int(struct XenDevice
*xendev
, const char *node
, int *ival
);
81 int xenstore_read_uint64(const char *base
, const char *node
, uint64_t *uval
);
82 int xenstore_read_fe_uint64(struct XenDevice
*xendev
, const char *node
, uint64_t *uval
);
84 const char *xenbus_strstate(enum xenbus_state state
);
85 struct XenDevice
*xen_be_find_xendev(const char *type
, int dom
, int dev
);
86 void xen_be_check_state(struct XenDevice
*xendev
);
88 /* xen backend driver bits */
89 int xen_be_init(void);
90 void xen_be_register_common(void);
91 int xen_be_register(const char *type
, struct XenDevOps
*ops
);
92 int xen_be_set_state(struct XenDevice
*xendev
, enum xenbus_state state
);
93 int xen_be_bind_evtchn(struct XenDevice
*xendev
);
94 void xen_be_unbind_evtchn(struct XenDevice
*xendev
);
95 int xen_be_send_notify(struct XenDevice
*xendev
);
96 void xen_be_printf(struct XenDevice
*xendev
, int msg_level
, const char *fmt
, ...)
99 /* actual backend drivers */
100 extern struct XenDevOps xen_console_ops
; /* xen_console.c */
101 extern struct XenDevOps xen_kbdmouse_ops
; /* xen_framebuffer.c */
102 extern struct XenDevOps xen_framebuffer_ops
; /* xen_framebuffer.c */
103 extern struct XenDevOps xen_blkdev_ops
; /* xen_disk.c */
104 extern struct XenDevOps xen_netdev_ops
; /* xen_nic.c */
105 #ifdef CONFIG_USB_LIBUSB
106 extern struct XenDevOps xen_usb_ops
; /* xen-usb.c */
109 void xen_init_display(int domid
);
111 /* configuration (aka xenbus setup) */
112 void xen_config_cleanup(void);
113 int xen_config_dev_blk(DriveInfo
*disk
);
114 int xen_config_dev_nic(NICInfo
*nic
);
115 int xen_config_dev_vfb(int vdev
, const char *type
);
116 int xen_config_dev_vkbd(int vdev
);
117 int xen_config_dev_console(int vdev
);
119 #endif /* QEMU_HW_XEN_BACKEND_H */